diff options
| author | Petr Hosek <phosek@chromium.org> | 2019-04-28 22:47:49 +0000 |
|---|---|---|
| committer | Petr Hosek <phosek@chromium.org> | 2019-04-28 22:47:49 +0000 |
| commit | f0745e8476f069296a7c71accedd061dce4cdf79 (patch) | |
| tree | 80b7eb5ce1c34cc11ef4cea79537a51a54ca4e45 | |
| parent | db42a0ccf35e49df3a801d4a7964fce06f587542 (diff) | |
| download | compiler-rt-f0745e8476f069296a7c71accedd061dce4cdf79.tar.gz | |
[builtins] Use single line C++/C99 comment style
Use the uniform single line C++/99 style for code comments.
This is part of the cleanup proposed in "[RFC] compiler-rt builtins
cleanup and refactoring".
Differential Revision: https://reviews.llvm.org/D60352
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@359411 91177308-0d34-0410-b5e6-96231b3b80d8
240 files changed, 3489 insertions, 3869 deletions
diff --git a/lib/builtins/absvdi2.c b/lib/builtins/absvdi2.c index f979f1408..b9566cd87 100644 --- a/lib/builtins/absvdi2.c +++ b/lib/builtins/absvdi2.c @@ -1,21 +1,20 @@ -/*===-- absvdi2.c - Implement __absvdi2 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------=== - * - * This file implements __absvdi2 for the compiler_rt library. - * - *===----------------------------------------------------------------------=== - */ +//===-- absvdi2.c - Implement __absvdi2 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __absvdi2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: absolute value */ +// Returns: absolute value -/* Effects: aborts if abs(x) < 0 */ +// Effects: aborts if abs(x) < 0 COMPILER_RT_ABI di_int __absvdi2(di_int a) { const int N = (int)(sizeof(di_int) * CHAR_BIT); diff --git a/lib/builtins/absvsi2.c b/lib/builtins/absvsi2.c index e46bd5627..44ada169e 100644 --- a/lib/builtins/absvsi2.c +++ b/lib/builtins/absvsi2.c @@ -1,21 +1,20 @@ -/* ===-- absvsi2.c - Implement __absvsi2 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __absvsi2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- absvsi2.c - Implement __absvsi2 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __absvsi2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: absolute value */ +// Returns: absolute value -/* Effects: aborts if abs(x) < 0 */ +// Effects: aborts if abs(x) < 0 COMPILER_RT_ABI si_int __absvsi2(si_int a) { const int N = (int)(sizeof(si_int) * CHAR_BIT); diff --git a/lib/builtins/absvti2.c b/lib/builtins/absvti2.c index b41a8ffac..491d99d7c 100644 --- a/lib/builtins/absvti2.c +++ b/lib/builtins/absvti2.c @@ -1,23 +1,22 @@ -/* ===-- absvti2.c - Implement __absvdi2 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __absvti2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- absvti2.c - Implement __absvdi2 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __absvti2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: absolute value */ +// Returns: absolute value -/* Effects: aborts if abs(x) < 0 */ +// Effects: aborts if abs(x) < 0 COMPILER_RT_ABI ti_int __absvti2(ti_int a) { const int N = (int)(sizeof(ti_int) * CHAR_BIT); @@ -27,4 +26,4 @@ COMPILER_RT_ABI ti_int __absvti2(ti_int a) { return (a ^ s) - s; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/addvdi3.c b/lib/builtins/addvdi3.c index bdba1f572..28661fda8 100644 --- a/lib/builtins/addvdi3.c +++ b/lib/builtins/addvdi3.c @@ -1,21 +1,20 @@ -/* ===-- addvdi3.c - Implement __addvdi3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __addvdi3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- addvdi3.c - Implement __addvdi3 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __addvdi3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a + b */ +// Returns: a + b -/* Effects: aborts if a + b overflows */ +// Effects: aborts if a + b overflows COMPILER_RT_ABI di_int __addvdi3(di_int a, di_int b) { di_int s = (du_int)a + (du_int)b; diff --git a/lib/builtins/addvsi3.c b/lib/builtins/addvsi3.c index 1a043b2ab..404002375 100644 --- a/lib/builtins/addvsi3.c +++ b/lib/builtins/addvsi3.c @@ -1,21 +1,20 @@ -/* ===-- addvsi3.c - Implement __addvsi3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __addvsi3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- addvsi3.c - Implement __addvsi3 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __addvsi3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a + b */ +// Returns: a + b -/* Effects: aborts if a + b overflows */ +// Effects: aborts if a + b overflows COMPILER_RT_ABI si_int __addvsi3(si_int a, si_int b) { si_int s = (su_int)a + (su_int)b; diff --git a/lib/builtins/addvti3.c b/lib/builtins/addvti3.c index 72697fd95..aa709875d 100644 --- a/lib/builtins/addvti3.c +++ b/lib/builtins/addvti3.c @@ -1,23 +1,22 @@ -/* ===-- addvti3.c - Implement __addvti3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __addvti3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- addvti3.c - Implement __addvti3 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __addvti3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: a + b */ +// Returns: a + b -/* Effects: aborts if a + b overflows */ +// Effects: aborts if a + b overflows COMPILER_RT_ABI ti_int __addvti3(ti_int a, ti_int b) { ti_int s = (tu_int)a + (tu_int)b; @@ -31,4 +30,4 @@ COMPILER_RT_ABI ti_int __addvti3(ti_int a, ti_int b) { return s; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/apple_versioning.c b/lib/builtins/apple_versioning.c index 9f7df6f3b..f87b42820 100644 --- a/lib/builtins/apple_versioning.c +++ b/lib/builtins/apple_versioning.c @@ -1,11 +1,10 @@ -/* ===-- apple_versioning.c - Adds versioning symbols for ld ---------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- apple_versioning.c - Adds versioning symbols for ld ---------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #if __APPLE__ #include <Availability.h> @@ -36,9 +35,8 @@ __attribute__((visibility("default"))) const char sym##_tmp6 = 0; #endif -/* Symbols in libSystem.dylib in 10.6 and later, - * but are in libgcc_s.dylib in earlier versions - */ +// Symbols in libSystem.dylib in 10.6 and later, +// but are in libgcc_s.dylib in earlier versions NOT_HERE_BEFORE_10_6(__absvdi2) NOT_HERE_BEFORE_10_6(__absvsi2) @@ -146,7 +144,7 @@ NOT_HERE_BEFORE_10_6(__gcc_qdiv) NOT_HERE_BEFORE_10_6(__gcc_qmul) NOT_HERE_BEFORE_10_6(__gcc_qsub) NOT_HERE_BEFORE_10_6(__trampoline_setup) -#endif /* __ppc__ */ +#endif // __ppc__ NOT_HERE_IN_10_8_AND_EARLIER(__atomic_compare_exchange) NOT_HERE_IN_10_8_AND_EARLIER(__atomic_compare_exchange_1) @@ -334,8 +332,8 @@ NOT_HERE_UNTIL_AFTER_4_3(__divmodsi4) NOT_HERE_UNTIL_AFTER_4_3(__udivmodsi4) #endif // __arm__ && __DYNAMIC__ -#else /* !__APPLE__ */ +#else // !__APPLE__ extern int avoid_empty_file; -#endif /* !__APPLE__*/ +#endif // !__APPLE__ diff --git a/lib/builtins/arm/adddf3vfp.S b/lib/builtins/arm/adddf3vfp.S index bddbe6f01..1a271db08 100644 --- a/lib/builtins/arm/adddf3vfp.S +++ b/lib/builtins/arm/adddf3vfp.S @@ -8,12 +8,11 @@ #include "../assembly.h" -// // double __adddf3vfp(double a, double b) { return a + b; } // // Adds two double precision floating point numbers using the Darwin // calling convention where double arguments are passsed in GPR pairs -// + .syntax unified .p2align 2 DEFINE_COMPILERRT_FUNCTION(__adddf3vfp) @@ -22,7 +21,7 @@ DEFINE_COMPILERRT_FUNCTION(__adddf3vfp) #else vmov d6, r0, r1 // move first param from r0/r1 pair into d6 vmov d7, r2, r3 // move second param from r2/r3 pair into d7 - vadd.f64 d6, d6, d7 + vadd.f64 d6, d6, d7 vmov r0, r1, d6 // move result back to r0/r1 pair #endif bx lr diff --git a/lib/builtins/arm/addsf3.S b/lib/builtins/arm/addsf3.S index 0bbc02101..aa4d40473 100644 --- a/lib/builtins/arm/addsf3.S +++ b/lib/builtins/arm/addsf3.S @@ -1,16 +1,16 @@ -/*===-- addsf3.S - Adds two single precision floating pointer numbers-----===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __addsf3 (single precision floating pointer number - * addition with the IEEE-754 default rounding (to nearest, ties to even) - * function for the ARM Thumb1 ISA. - * - *===----------------------------------------------------------------------===*/ +//===-- addsf3.S - Adds two single precision floating pointer numbers-----===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __addsf3 (single precision floating pointer number +// addition with the IEEE-754 default rounding (to nearest, ties to even) +// function for the ARM Thumb1 ISA. +// +//===----------------------------------------------------------------------===// #include "../assembly.h" #define significandBits 23 @@ -28,9 +28,9 @@ DEFINE_COMPILERRT_THUMB_FUNCTION(__addsf3) // Get the absolute value of a and b. lsls r2, r0, #1 lsls r3, r1, #1 - lsrs r2, r2, #1 /* aAbs */ + lsrs r2, r2, #1 // aAbs beq LOCAL_LABEL(a_zero_nan_inf) - lsrs r3, r3, #1 /* bAbs */ + lsrs r3, r3, #1 // bAbs beq LOCAL_LABEL(zero_nan_inf) // Detect if a or b is infinity or Nan. @@ -54,9 +54,9 @@ LOCAL_LABEL(no_swap): // Get the significands and shift them to give us round, guard and sticky. lsls r4, r0, #(typeWidth - significandBits) - lsrs r4, r4, #(typeWidth - significandBits - 3) /* aSignificand << 3 */ + lsrs r4, r4, #(typeWidth - significandBits - 3) // aSignificand << 3 lsls r5, r1, #(typeWidth - significandBits) - lsrs r5, r5, #(typeWidth - significandBits - 3) /* bSignificand << 3 */ + lsrs r5, r5, #(typeWidth - significandBits - 3) // bSignificand << 3 // Get the implicitBit. movs r6, #1 @@ -198,7 +198,7 @@ LOCAL_LABEL(do_substraction): beq 1f movs r7, #1 1: - lsrs r4, r6 /* aSignificand >> shift */ + lsrs r4, r6 // aSignificand >> shift orrs r4, r7 b LOCAL_LABEL(form_result) diff --git a/lib/builtins/arm/aeabi_div0.c b/lib/builtins/arm/aeabi_div0.c index ddd9e2498..7e8862321 100644 --- a/lib/builtins/arm/aeabi_div0.c +++ b/lib/builtins/arm/aeabi_div0.c @@ -1,33 +1,30 @@ -/* ===-- aeabi_div0.c - ARM Runtime ABI support routines for compiler-rt ---=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements the division by zero helper routines as specified by the - * Run-time ABI for the ARM Architecture. - * - * ===----------------------------------------------------------------------=== - */ +//===-- aeabi_div0.c - ARM Runtime ABI support routines for compiler-rt ---===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the division by zero helper routines as specified by the +// Run-time ABI for the ARM Architecture. +// +//===----------------------------------------------------------------------===// -/* - * RTABI 4.3.2 - Division by zero - * - * The *div0 functions: - * - Return the value passed to them as a parameter - * - Or, return a fixed value defined by the execution environment (such as 0) - * - Or, raise a signal (often SIGFPE) or throw an exception, and do not return - * - * An application may provide its own implementations of the *div0 functions to - * for a particular behaviour from the *div and *divmod functions called out of - * line. - */ +// RTABI 4.3.2 - Division by zero +// +// The *div0 functions: +// - Return the value passed to them as a parameter +// - Or, return a fixed value defined by the execution environment (such as 0) +// - Or, raise a signal (often SIGFPE) or throw an exception, and do not return +// +// An application may provide its own implementations of the *div0 functions to +// for a particular behaviour from the *div and *divmod functions called out of +// line. #include "../int_lib.h" -/* provide an unused declaration to pacify pendantic compilation */ +// provide an unused declaration to pacify pendantic compilation extern unsigned char declaration; #if defined(__ARM_EABI__) diff --git a/lib/builtins/arm/clzdi2.S b/lib/builtins/arm/clzdi2.S index f02b98b99..685668b11 100644 --- a/lib/builtins/arm/clzdi2.S +++ b/lib/builtins/arm/clzdi2.S @@ -1,15 +1,15 @@ -/* ===-- clzdi2.c - Implement __clzdi2 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements count leading zeros for 64bit arguments. - * - * ===----------------------------------------------------------------------=== - */ +//===-- clzdi2.c - Implement __clzdi2 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements count leading zeros for 64bit arguments. +// +//===----------------------------------------------------------------------===// + #include "../assembly.h" .syntax unified @@ -34,14 +34,12 @@ DEFINE_COMPILERRT_FUNCTION(__clzdi2) #endif JMP(lr) #else - /* Assumption: n != 0 */ + // Assumption: n != 0 - /* - * r0: n - * r1: upper half of n, overwritten after check - * r1: count of leading zeros in n + 1 - * r2: scratch register for shifted r0 - */ + // r0: n + // r1: upper half of n, overwritten after check + // r1: count of leading zeros in n + 1 + // r2: scratch register for shifted r0 #ifdef __ARMEB__ cmp r0, 0 moveq r0, r1 @@ -52,14 +50,12 @@ DEFINE_COMPILERRT_FUNCTION(__clzdi2) movne r1, 1 moveq r1, 33 - /* - * Basic block: - * if ((r0 >> SHIFT) == 0) - * r1 += SHIFT; - * else - * r0 >>= SHIFT; - * for descending powers of two as SHIFT. - */ + // Basic block: + // if ((r0 >> SHIFT) == 0) + // r1 += SHIFT; + // else + // r0 >>= SHIFT; + // for descending powers of two as SHIFT. #define BLOCK(shift) \ lsrs r2, r0, shift; \ movne r0, r2; \ @@ -70,18 +66,16 @@ DEFINE_COMPILERRT_FUNCTION(__clzdi2) BLOCK(4) BLOCK(2) - /* - * The basic block invariants at this point are (r0 >> 2) == 0 and - * r0 != 0. This means 1 <= r0 <= 3 and 0 <= (r0 >> 1) <= 1. - * - * r0 | (r0 >> 1) == 0 | (r0 >> 1) == 1 | -(r0 >> 1) | 1 - (r0 >> 1) - * ---+----------------+----------------+------------+-------------- - * 1 | 1 | 0 | 0 | 1 - * 2 | 0 | 1 | -1 | 0 - * 3 | 0 | 1 | -1 | 0 - * - * The r1's initial value of 1 compensates for the 1 here. - */ + // The basic block invariants at this point are (r0 >> 2) == 0 and + // r0 != 0. This means 1 <= r0 <= 3 and 0 <= (r0 >> 1) <= 1. + // + // r0 | (r0 >> 1) == 0 | (r0 >> 1) == 1 | -(r0 >> 1) | 1 - (r0 >> 1) + // ---+----------------+----------------+------------+-------------- + // 1 | 1 | 0 | 0 | 1 + // 2 | 0 | 1 | -1 | 0 + // 3 | 0 | 1 | -1 | 0 + // + // The r1's initial value of 1 compensates for the 1 here. sub r0, r1, r0, lsr #1 JMP(lr) diff --git a/lib/builtins/arm/clzsi2.S b/lib/builtins/arm/clzsi2.S index 32dd14852..5d86fe486 100644 --- a/lib/builtins/arm/clzsi2.S +++ b/lib/builtins/arm/clzsi2.S @@ -1,15 +1,15 @@ -/* ===-- clzsi2.c - Implement __clzsi2 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements count leading zeros for 32bit arguments. - * - * ===----------------------------------------------------------------------=== - */ +//===-- clzsi2.c - Implement __clzsi2 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements count leading zeros for 32bit arguments. +// +//===----------------------------------------------------------------------===// + #include "../assembly.h" .syntax unified @@ -22,23 +22,19 @@ DEFINE_COMPILERRT_FUNCTION(__clzsi2) clz r0, r0 JMP(lr) #else - /* Assumption: n != 0 */ + // Assumption: n != 0 - /* - * r0: n - * r1: count of leading zeros in n + 1 - * r2: scratch register for shifted r0 - */ + // r0: n + // r1: count of leading zeros in n + 1 + // r2: scratch register for shifted r0 mov r1, 1 - /* - * Basic block: - * if ((r0 >> SHIFT) == 0) - * r1 += SHIFT; - * else - * r0 >>= SHIFT; - * for descending powers of two as SHIFT. - */ + // Basic block: + // if ((r0 >> SHIFT) == 0) + // r1 += SHIFT; + // else + // r0 >>= SHIFT; + // for descending powers of two as SHIFT. #define BLOCK(shift) \ lsrs r2, r0, shift; \ @@ -50,18 +46,16 @@ DEFINE_COMPILERRT_FUNCTION(__clzsi2) BLOCK(4) BLOCK(2) - /* - * The basic block invariants at this point are (r0 >> 2) == 0 and - * r0 != 0. This means 1 <= r0 <= 3 and 0 <= (r0 >> 1) <= 1. - * - * r0 | (r0 >> 1) == 0 | (r0 >> 1) == 1 | -(r0 >> 1) | 1 - (r0 >> 1) - * ---+----------------+----------------+------------+-------------- - * 1 | 1 | 0 | 0 | 1 - * 2 | 0 | 1 | -1 | 0 - * 3 | 0 | 1 | -1 | 0 - * - * The r1's initial value of 1 compensates for the 1 here. - */ + // The basic block invariants at this point are (r0 >> 2) == 0 and + // r0 != 0. This means 1 <= r0 <= 3 and 0 <= (r0 >> 1) <= 1. + // + // r0 | (r0 >> 1) == 0 | (r0 >> 1) == 1 | -(r0 >> 1) | 1 - (r0 >> 1) + // ---+----------------+----------------+------------+-------------- + // 1 | 1 | 0 | 0 | 1 + // 2 | 0 | 1 | -1 | 0 + // 3 | 0 | 1 | -1 | 0 + // + // The r1's initial value of 1 compensates for the 1 here. sub r0, r1, r0, lsr #1 JMP(lr) diff --git a/lib/builtins/arm/divmodsi4.S b/lib/builtins/arm/divmodsi4.S index 47a7f25d5..f94438dfd 100644 --- a/lib/builtins/arm/divmodsi4.S +++ b/lib/builtins/arm/divmodsi4.S @@ -1,16 +1,16 @@ -/*===-- divmodsi4.S - 32-bit signed integer divide and modulus ------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __divmodsi4 (32-bit signed integer divide and - * modulus) function for the ARM architecture. A naive digit-by-digit - * computation is employed for simplicity. - * - *===----------------------------------------------------------------------===*/ +//===-- divmodsi4.S - 32-bit signed integer divide and modulus ------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __divmodsi4 (32-bit signed integer divide and +// modulus) function for the ARM architecture. A naive digit-by-digit +// computation is employed for simplicity. +// +//===----------------------------------------------------------------------===// #include "../assembly.h" diff --git a/lib/builtins/arm/divsi3.S b/lib/builtins/arm/divsi3.S index ff03811f6..761bf49d3 100644 --- a/lib/builtins/arm/divsi3.S +++ b/lib/builtins/arm/divsi3.S @@ -1,15 +1,15 @@ -/*===-- divsi3.S - 32-bit signed integer divide ---------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __divsi3 (32-bit signed integer divide) function - * for the ARM architecture as a wrapper around the unsigned routine. - * - *===----------------------------------------------------------------------===*/ +//===-- divsi3.S - 32-bit signed integer divide ---------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __divsi3 (32-bit signed integer divide) function +// for the ARM architecture as a wrapper around the unsigned routine. +// +//===----------------------------------------------------------------------===// #include "../assembly.h" diff --git a/lib/builtins/arm/eqdf2vfp.S b/lib/builtins/arm/eqdf2vfp.S index a266df8cc..2a0a64b97 100644 --- a/lib/builtins/arm/eqdf2vfp.S +++ b/lib/builtins/arm/eqdf2vfp.S @@ -8,13 +8,12 @@ #include "../assembly.h" -// // extern int __eqdf2vfp(double a, double b); // // Returns one iff a == b and neither is NaN. -// Uses Darwin calling convention where double precision arguments are passsed +// Uses Darwin calling convention where double precision arguments are passsed // like in GPR pairs. -// + .syntax unified .p2align 2 DEFINE_COMPILERRT_FUNCTION(__eqdf2vfp) @@ -23,7 +22,7 @@ DEFINE_COMPILERRT_FUNCTION(__eqdf2vfp) #else vmov d6, r0, r1 // load r0/r1 pair in double register vmov d7, r2, r3 // load r2/r3 pair in double register - vcmp.f64 d6, d7 + vcmp.f64 d6, d7 #endif vmrs apsr_nzcv, fpscr ITE(eq) diff --git a/lib/builtins/arm/eqsf2vfp.S b/lib/builtins/arm/eqsf2vfp.S index 8524251c8..5fefe7b71 100644 --- a/lib/builtins/arm/eqsf2vfp.S +++ b/lib/builtins/arm/eqsf2vfp.S @@ -12,7 +12,7 @@ // extern int __eqsf2vfp(float a, float b); // // Returns one iff a == b and neither is NaN. -// Uses Darwin calling convention where single precision arguments are passsed +// Uses Darwin calling convention where single precision arguments are passsed // like 32-bit ints // .syntax unified diff --git a/lib/builtins/arm/extendsfdf2vfp.S b/lib/builtins/arm/extendsfdf2vfp.S index 96e26af9a..37c8be8dc 100644 --- a/lib/builtins/arm/extendsfdf2vfp.S +++ b/lib/builtins/arm/extendsfdf2vfp.S @@ -12,7 +12,7 @@ // extern double __extendsfdf2vfp(float a); // // Converts single precision float to double precision result. -// Uses Darwin calling convention where a single precision parameter is +// Uses Darwin calling convention where a single precision parameter is // passed in a GPR and a double precision result is returned in R0/R1 pair. // .syntax unified diff --git a/lib/builtins/arm/fixdfsivfp.S b/lib/builtins/arm/fixdfsivfp.S index cc9e33d12..af1d4f4fa 100644 --- a/lib/builtins/arm/fixdfsivfp.S +++ b/lib/builtins/arm/fixdfsivfp.S @@ -12,7 +12,7 @@ // extern int __fixdfsivfp(double a); // // Converts double precision float to a 32-bit int rounding towards zero. -// Uses Darwin calling convention where a double precision parameter is +// Uses Darwin calling convention where a double precision parameter is // passed in GPR register pair. // .syntax unified diff --git a/lib/builtins/arm/fixsfsivfp.S b/lib/builtins/arm/fixsfsivfp.S index 8087c255d..30b2f3cf9 100644 --- a/lib/builtins/arm/fixsfsivfp.S +++ b/lib/builtins/arm/fixsfsivfp.S @@ -12,7 +12,7 @@ // extern int __fixsfsivfp(float a); // // Converts single precision float to a 32-bit int rounding towards zero. -// Uses Darwin calling convention where a single precision parameter is +// Uses Darwin calling convention where a single precision parameter is // passed in a GPR.. // .syntax unified diff --git a/lib/builtins/arm/fixunsdfsivfp.S b/lib/builtins/arm/fixunsdfsivfp.S index 3dbca8771..44e6dbd49 100644 --- a/lib/builtins/arm/fixunsdfsivfp.S +++ b/lib/builtins/arm/fixunsdfsivfp.S @@ -11,9 +11,9 @@ // // extern unsigned int __fixunsdfsivfp(double a); // -// Converts double precision float to a 32-bit unsigned int rounding towards +// Converts double precision float to a 32-bit unsigned int rounding towards // zero. All negative values become zero. -// Uses Darwin calling convention where a double precision parameter is +// Uses Darwin calling convention where a double precision parameter is // passed in GPR register pair. // .syntax unified diff --git a/lib/builtins/arm/fixunssfsivfp.S b/lib/builtins/arm/fixunssfsivfp.S index 23077d4df..5d6ee7cce 100644 --- a/lib/builtins/arm/fixunssfsivfp.S +++ b/lib/builtins/arm/fixunssfsivfp.S @@ -11,9 +11,9 @@ // // extern unsigned int __fixunssfsivfp(float a); // -// Converts single precision float to a 32-bit unsigned int rounding towards +// Converts single precision float to a 32-bit unsigned int rounding towards // zero. All negative values become zero. -// Uses Darwin calling convention where a single precision parameter is +// Uses Darwin calling convention where a single precision parameter is // passed in a GPR.. // .syntax unified diff --git a/lib/builtins/arm/floatsidfvfp.S b/lib/builtins/arm/floatsidfvfp.S index 17c4478a5..ae8d24658 100644 --- a/lib/builtins/arm/floatsidfvfp.S +++ b/lib/builtins/arm/floatsidfvfp.S @@ -12,7 +12,7 @@ // extern double __floatsidfvfp(int a); // // Converts a 32-bit int to a double precision float. -// Uses Darwin calling convention where a double precision result is +// Uses Darwin calling convention where a double precision result is // return in GPR register pair. // .syntax unified diff --git a/lib/builtins/arm/floatsisfvfp.S b/lib/builtins/arm/floatsisfvfp.S index 8e60ad047..a36bc5ee5 100644 --- a/lib/builtins/arm/floatsisfvfp.S +++ b/lib/builtins/arm/floatsisfvfp.S @@ -12,7 +12,7 @@ // extern float __floatsisfvfp(int a); // // Converts single precision float to a 32-bit int rounding towards zero. -// Uses Darwin calling convention where a single precision result is +// Uses Darwin calling convention where a single precision result is // return in a GPR.. // .syntax unified diff --git a/lib/builtins/arm/floatunssidfvfp.S b/lib/builtins/arm/floatunssidfvfp.S index 5ccc2750f..0932dab2b 100644 --- a/lib/builtins/arm/floatunssidfvfp.S +++ b/lib/builtins/arm/floatunssidfvfp.S @@ -12,7 +12,7 @@ // extern double __floatunssidfvfp(unsigned int a); // // Converts a 32-bit int to a double precision float. -// Uses Darwin calling convention where a double precision result is +// Uses Darwin calling convention where a double precision result is // return in GPR register pair. // .syntax unified diff --git a/lib/builtins/arm/floatunssisfvfp.S b/lib/builtins/arm/floatunssisfvfp.S index 6b77dac6f..9578546f4 100644 --- a/lib/builtins/arm/floatunssisfvfp.S +++ b/lib/builtins/arm/floatunssisfvfp.S @@ -12,7 +12,7 @@ // extern float __floatunssisfvfp(unsigned int a); // // Converts single precision float to a 32-bit int rounding towards zero. -// Uses Darwin calling convention where a single precision result is +// Uses Darwin calling convention where a single precision result is // return in a GPR.. // .syntax unified diff --git a/lib/builtins/arm/gedf2vfp.S b/lib/builtins/arm/gedf2vfp.S index 11e25f856..2af9d9099 100644 --- a/lib/builtins/arm/gedf2vfp.S +++ b/lib/builtins/arm/gedf2vfp.S @@ -12,7 +12,7 @@ // extern int __gedf2vfp(double a, double b); // // Returns one iff a >= b and neither is NaN. -// Uses Darwin calling convention where double precision arguments are passsed +// Uses Darwin calling convention where double precision arguments are passsed // like in GPR pairs. // .syntax unified diff --git a/lib/builtins/arm/gesf2vfp.S b/lib/builtins/arm/gesf2vfp.S index 54787e86b..cedd1e13e 100644 --- a/lib/builtins/arm/gesf2vfp.S +++ b/lib/builtins/arm/gesf2vfp.S @@ -12,7 +12,7 @@ // extern int __gesf2vfp(float a, float b); // // Returns one iff a >= b and neither is NaN. -// Uses Darwin calling convention where single precision arguments are passsed +// Uses Darwin calling convention where single precision arguments are passsed // like 32-bit ints // .syntax unified diff --git a/lib/builtins/arm/gtdf2vfp.S b/lib/builtins/arm/gtdf2vfp.S index 10cd0cbc6..782ad8cac 100644 --- a/lib/builtins/arm/gtdf2vfp.S +++ b/lib/builtins/arm/gtdf2vfp.S @@ -12,7 +12,7 @@ // extern double __gtdf2vfp(double a, double b); // // Returns one iff a > b and neither is NaN. -// Uses Darwin calling convention where double precision arguments are passsed +// Uses Darwin calling convention where double precision arguments are passsed // like in GPR pairs. // .syntax unified diff --git a/lib/builtins/arm/gtsf2vfp.S b/lib/builtins/arm/gtsf2vfp.S index 54b50bb39..1cc2bd14f 100644 --- a/lib/builtins/arm/gtsf2vfp.S +++ b/lib/builtins/arm/gtsf2vfp.S @@ -12,7 +12,7 @@ // extern int __gtsf2vfp(float a, float b); // // Returns one iff a > b and neither is NaN. -// Uses Darwin calling convention where single precision arguments are passsed +// Uses Darwin calling convention where single precision arguments are passsed // like 32-bit ints // .syntax unified diff --git a/lib/builtins/arm/ledf2vfp.S b/lib/builtins/arm/ledf2vfp.S index d33ed1b21..0097e4b6c 100644 --- a/lib/builtins/arm/ledf2vfp.S +++ b/lib/builtins/arm/ledf2vfp.S @@ -12,7 +12,7 @@ // extern double __ledf2vfp(double a, double b); // // Returns one iff a <= b and neither is NaN. -// Uses Darwin calling convention where double precision arguments are passsed +// Uses Darwin calling convention where double precision arguments are passsed // like in GPR pairs. // .syntax unified diff --git a/lib/builtins/arm/lesf2vfp.S b/lib/builtins/arm/lesf2vfp.S index 7ef79e876..2052d3869 100644 --- a/lib/builtins/arm/lesf2vfp.S +++ b/lib/builtins/arm/lesf2vfp.S @@ -12,7 +12,7 @@ // extern int __lesf2vfp(float a, float b); // // Returns one iff a <= b and neither is NaN. -// Uses Darwin calling convention where single precision arguments are passsed +// Uses Darwin calling convention where single precision arguments are passsed // like 32-bit ints // .syntax unified diff --git a/lib/builtins/arm/ltdf2vfp.S b/lib/builtins/arm/ltdf2vfp.S index 29956d300..a126aa9e0 100644 --- a/lib/builtins/arm/ltdf2vfp.S +++ b/lib/builtins/arm/ltdf2vfp.S @@ -12,7 +12,7 @@ // extern double __ltdf2vfp(double a, double b); // // Returns one iff a < b and neither is NaN. -// Uses Darwin calling convention where double precision arguments are passsed +// Uses Darwin calling convention where double precision arguments are passsed // like in GPR pairs. // .syntax unified diff --git a/lib/builtins/arm/ltsf2vfp.S b/lib/builtins/arm/ltsf2vfp.S index 7b1e46815..ba10d71d2 100644 --- a/lib/builtins/arm/ltsf2vfp.S +++ b/lib/builtins/arm/ltsf2vfp.S @@ -12,7 +12,7 @@ // extern int __ltsf2vfp(float a, float b); // // Returns one iff a < b and neither is NaN. -// Uses Darwin calling convention where single precision arguments are passsed +// Uses Darwin calling convention where single precision arguments are passsed // like 32-bit ints // .syntax unified diff --git a/lib/builtins/arm/modsi3.S b/lib/builtins/arm/modsi3.S index ae90fd887..5312f5b41 100644 --- a/lib/builtins/arm/modsi3.S +++ b/lib/builtins/arm/modsi3.S @@ -1,15 +1,15 @@ -/*===-- modsi3.S - 32-bit signed integer modulus --------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __modsi3 (32-bit signed integer modulus) function - * for the ARM architecture as a wrapper around the unsigned routine. - * - *===----------------------------------------------------------------------===*/ +//===-- modsi3.S - 32-bit signed integer modulus --------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __modsi3 (32-bit signed integer modulus) function +// for the ARM architecture as a wrapper around the unsigned routine. +// +//===----------------------------------------------------------------------===// #include "../assembly.h" diff --git a/lib/builtins/arm/nedf2vfp.S b/lib/builtins/arm/nedf2vfp.S index eb0eb9740..32d35c41d 100644 --- a/lib/builtins/arm/nedf2vfp.S +++ b/lib/builtins/arm/nedf2vfp.S @@ -8,13 +8,12 @@ #include "../assembly.h" -// // extern double __nedf2vfp(double a, double b); // // Returns zero if a and b are unequal and neither is NaN. -// Uses Darwin calling convention where double precision arguments are passsed +// Uses Darwin calling convention where double precision arguments are passsed // like in GPR pairs. -// + .syntax unified .p2align 2 DEFINE_COMPILERRT_FUNCTION(__nedf2vfp) @@ -23,7 +22,7 @@ DEFINE_COMPILERRT_FUNCTION(__nedf2vfp) #else vmov d6, r0, r1 // load r0/r1 pair in double register vmov d7, r2, r3 // load r2/r3 pair in double register - vcmp.f64 d6, d7 + vcmp.f64 d6, d7 #endif vmrs apsr_nzcv, fpscr ITE(ne) diff --git a/lib/builtins/arm/negdf2vfp.S b/lib/builtins/arm/negdf2vfp.S index 158ea6f1c..b7cf91877 100644 --- a/lib/builtins/arm/negdf2vfp.S +++ b/lib/builtins/arm/negdf2vfp.S @@ -11,7 +11,7 @@ // // extern double __negdf2vfp(double a, double b); // -// Returns the negation a double precision floating point numbers using the +// Returns the negation a double precision floating point numbers using the // Darwin calling convention where double arguments are passsed in GPR pairs. // .syntax unified diff --git a/lib/builtins/arm/negsf2vfp.S b/lib/builtins/arm/negsf2vfp.S index 2b2883d2a..b6d3c6189 100644 --- a/lib/builtins/arm/negsf2vfp.S +++ b/lib/builtins/arm/negsf2vfp.S @@ -11,7 +11,7 @@ // // extern float __negsf2vfp(float a); // -// Returns the negation of a single precision floating point numbers using the +// Returns the negation of a single precision floating point numbers using the // Darwin calling convention where single arguments are passsed like 32-bit ints // .syntax unified diff --git a/lib/builtins/arm/nesf2vfp.S b/lib/builtins/arm/nesf2vfp.S index c97507e5b..34c8bb489 100644 --- a/lib/builtins/arm/nesf2vfp.S +++ b/lib/builtins/arm/nesf2vfp.S @@ -12,7 +12,7 @@ // extern int __nesf2vfp(float a, float b); // // Returns one iff a != b and neither is NaN. -// Uses Darwin calling convention where single precision arguments are passsed +// Uses Darwin calling convention where single precision arguments are passsed // like 32-bit ints // .syntax unified diff --git a/lib/builtins/arm/softfloat-alias.list b/lib/builtins/arm/softfloat-alias.list index cc6a4b3cd..ab6ed21e5 100644 --- a/lib/builtins/arm/softfloat-alias.list +++ b/lib/builtins/arm/softfloat-alias.list @@ -1,5 +1,5 @@ # -# These are soft float functions which can be +# These are soft float functions which can be # aliased to the *vfp functions on arm processors # that support floating point instructions. # diff --git a/lib/builtins/arm/subdf3vfp.S b/lib/builtins/arm/subdf3vfp.S index bbd41aea9..f4eaf9af1 100644 --- a/lib/builtins/arm/subdf3vfp.S +++ b/lib/builtins/arm/subdf3vfp.S @@ -11,7 +11,7 @@ // // extern double __subdf3vfp(double a, double b); // -// Returns difference between two double precision floating point numbers using +// Returns difference between two double precision floating point numbers using // the Darwin calling convention where double arguments are passsed in GPR pairs // .syntax unified @@ -22,7 +22,7 @@ DEFINE_COMPILERRT_FUNCTION(__subdf3vfp) #else vmov d6, r0, r1 // move first param from r0/r1 pair into d6 vmov d7, r2, r3 // move second param from r2/r3 pair into d7 - vsub.f64 d6, d6, d7 + vsub.f64 d6, d6, d7 vmov r0, r1, d6 // move result back to r0/r1 pair #endif bx lr diff --git a/lib/builtins/arm/sync-ops.h b/lib/builtins/arm/sync-ops.h index d86f25a31..5bb863d8c 100644 --- a/lib/builtins/arm/sync-ops.h +++ b/lib/builtins/arm/sync-ops.h @@ -1,16 +1,16 @@ -/*===-- sync-ops.h - --===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements outline macros for the __sync_fetch_and_* - * operations. Different instantiations will generate appropriate assembly for - * ARM and Thumb-2 versions of the functions. - * - *===----------------------------------------------------------------------===*/ +//===-- sync-ops.h - --===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements outline macros for the __sync_fetch_and_* +// operations. Different instantiations will generate appropriate assembly for +// ARM and Thumb-2 versions of the functions. +// +//===----------------------------------------------------------------------===// #include "../assembly.h" diff --git a/lib/builtins/arm/sync_fetch_and_add_4.S b/lib/builtins/arm/sync_fetch_and_add_4.S index fe6dc1380..0d55975b7 100644 --- a/lib/builtins/arm/sync_fetch_and_add_4.S +++ b/lib/builtins/arm/sync_fetch_and_add_4.S @@ -1,19 +1,19 @@ -/*===-- sync_fetch_and_add_4.S - ------------------------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __sync_fetch_and_add_4 function for the ARM - * architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- sync_fetch_and_add_4.S - ------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __sync_fetch_and_add_4 function for the ARM +// architecture. +// +//===----------------------------------------------------------------------===// #include "sync-ops.h" -/* "adds" is 2 bytes shorter than "add". */ +// "adds" is 2 bytes shorter than "add". #define add_4(rD, rN, rM) add rD, rN, rM SYNC_OP_4(add_4) diff --git a/lib/builtins/arm/sync_fetch_and_add_8.S b/lib/builtins/arm/sync_fetch_and_add_8.S index 2f13bab96..18bdd875b 100644 --- a/lib/builtins/arm/sync_fetch_and_add_8.S +++ b/lib/builtins/arm/sync_fetch_and_add_8.S @@ -1,15 +1,15 @@ -/*===-- sync_fetch_and_add_8.S - ------------------------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __sync_fetch_and_add_8 function for the ARM - * architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- sync_fetch_and_add_8.S - ------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __sync_fetch_and_add_8 function for the ARM +// architecture. +// +//===----------------------------------------------------------------------===// #include "sync-ops.h" diff --git a/lib/builtins/arm/sync_fetch_and_and_4.S b/lib/builtins/arm/sync_fetch_and_and_4.S index d6bbe2f91..3a76acca6 100644 --- a/lib/builtins/arm/sync_fetch_and_and_4.S +++ b/lib/builtins/arm/sync_fetch_and_and_4.S @@ -1,15 +1,15 @@ -/*===-- sync_fetch_and_and_4.S - ------------------------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __sync_fetch_and_and_4 function for the ARM - * architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- sync_fetch_and_and_4.S - ------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __sync_fetch_and_and_4 function for the ARM +// architecture. +// +//===----------------------------------------------------------------------===// #include "sync-ops.h" diff --git a/lib/builtins/arm/sync_fetch_and_and_8.S b/lib/builtins/arm/sync_fetch_and_and_8.S index 8c7be4dbe..3716eff80 100644 --- a/lib/builtins/arm/sync_fetch_and_and_8.S +++ b/lib/builtins/arm/sync_fetch_and_and_8.S @@ -1,15 +1,15 @@ -/*===-- sync_fetch_and_and_8.S - ------------------------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __sync_fetch_and_and_8 function for the ARM - * architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- sync_fetch_and_and_8.S - ------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __sync_fetch_and_and_8 function for the ARM +// architecture. +// +//===----------------------------------------------------------------------===// #include "sync-ops.h" diff --git a/lib/builtins/arm/sync_fetch_and_max_4.S b/lib/builtins/arm/sync_fetch_and_max_4.S index 9fe814fa7..b9cee4521 100644 --- a/lib/builtins/arm/sync_fetch_and_max_4.S +++ b/lib/builtins/arm/sync_fetch_and_max_4.S @@ -1,15 +1,15 @@ -/*===-- sync_fetch_and_max_4.S - ------------------------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __sync_fetch_and_max_4 function for the ARM - * architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- sync_fetch_and_max_4.S - ------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __sync_fetch_and_max_4 function for the ARM +// architecture. +// +//===----------------------------------------------------------------------===// #include "sync-ops.h" diff --git a/lib/builtins/arm/sync_fetch_and_max_8.S b/lib/builtins/arm/sync_fetch_and_max_8.S index a15f7e0cc..06115ab55 100644 --- a/lib/builtins/arm/sync_fetch_and_max_8.S +++ b/lib/builtins/arm/sync_fetch_and_max_8.S @@ -1,15 +1,15 @@ -/*===-- sync_fetch_and_max_8.S - ------------------------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __sync_fetch_and_max_8 function for the ARM - * architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- sync_fetch_and_max_8.S - ------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __sync_fetch_and_max_8 function for the ARM +// architecture. +// +//===----------------------------------------------------------------------===// #include "sync-ops.h" diff --git a/lib/builtins/arm/sync_fetch_and_min_4.S b/lib/builtins/arm/sync_fetch_and_min_4.S index 2895fb9fb..60d435a0b 100644 --- a/lib/builtins/arm/sync_fetch_and_min_4.S +++ b/lib/builtins/arm/sync_fetch_and_min_4.S @@ -1,15 +1,15 @@ -/*===-- sync_fetch_and_min_4.S - ------------------------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __sync_fetch_and_min_4 function for the ARM - * architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- sync_fetch_and_min_4.S - ------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __sync_fetch_and_min_4 function for the ARM +// architecture. +// +//===----------------------------------------------------------------------===// #include "sync-ops.h" diff --git a/lib/builtins/arm/sync_fetch_and_min_8.S b/lib/builtins/arm/sync_fetch_and_min_8.S index f16e2ade1..4f3e299d9 100644 --- a/lib/builtins/arm/sync_fetch_and_min_8.S +++ b/lib/builtins/arm/sync_fetch_and_min_8.S @@ -1,15 +1,15 @@ -/*===-- sync_fetch_and_min_8.S - ------------------------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __sync_fetch_and_min_8 function for the ARM - * architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- sync_fetch_and_min_8.S - ------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __sync_fetch_and_min_8 function for the ARM +// architecture. +// +//===----------------------------------------------------------------------===// #include "sync-ops.h" diff --git a/lib/builtins/arm/sync_fetch_and_nand_4.S b/lib/builtins/arm/sync_fetch_and_nand_4.S index 336e22ae3..5a04be0f6 100644 --- a/lib/builtins/arm/sync_fetch_and_nand_4.S +++ b/lib/builtins/arm/sync_fetch_and_nand_4.S @@ -1,15 +1,15 @@ -/*===-- sync_fetch_and_nand_4.S - -----------------------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __sync_fetch_and_nand_4 function for the ARM - * architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- sync_fetch_and_nand_4.S - -----------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __sync_fetch_and_nand_4 function for the ARM +// architecture. +// +//===----------------------------------------------------------------------===// #include "sync-ops.h" diff --git a/lib/builtins/arm/sync_fetch_and_nand_8.S b/lib/builtins/arm/sync_fetch_and_nand_8.S index 855b3f94e..425c94474 100644 --- a/lib/builtins/arm/sync_fetch_and_nand_8.S +++ b/lib/builtins/arm/sync_fetch_and_nand_8.S @@ -1,15 +1,15 @@ -/*===-- sync_fetch_and_nand_8.S - ------------------------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __sync_fetch_and_nand_8 function for the ARM - * architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- sync_fetch_and_nand_8.S - ------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __sync_fetch_and_nand_8 function for the ARM +// architecture. +// +//===----------------------------------------------------------------------===// #include "sync-ops.h" diff --git a/lib/builtins/arm/sync_fetch_and_or_4.S b/lib/builtins/arm/sync_fetch_and_or_4.S index 34de77b33..f44751b9a 100644 --- a/lib/builtins/arm/sync_fetch_and_or_4.S +++ b/lib/builtins/arm/sync_fetch_and_or_4.S @@ -1,15 +1,15 @@ -/*===-- sync_fetch_and_or_4.S - -------------------------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __sync_fetch_and_or_4 function for the ARM - * architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- sync_fetch_and_or_4.S - -------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __sync_fetch_and_or_4 function for the ARM +// architecture. +// +//===----------------------------------------------------------------------===// #include "sync-ops.h" diff --git a/lib/builtins/arm/sync_fetch_and_or_8.S b/lib/builtins/arm/sync_fetch_and_or_8.S index 456cd7cb6..4f18dcf84 100644 --- a/lib/builtins/arm/sync_fetch_and_or_8.S +++ b/lib/builtins/arm/sync_fetch_and_or_8.S @@ -1,15 +1,15 @@ -/*===-- sync_fetch_and_or_8.S - -------------------------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __sync_fetch_and_or_8 function for the ARM - * architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- sync_fetch_and_or_8.S - -------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __sync_fetch_and_or_8 function for the ARM +// architecture. +// +//===----------------------------------------------------------------------===// #include "sync-ops.h" diff --git a/lib/builtins/arm/sync_fetch_and_sub_4.S b/lib/builtins/arm/sync_fetch_and_sub_4.S index e2b12347c..999d48c28 100644 --- a/lib/builtins/arm/sync_fetch_and_sub_4.S +++ b/lib/builtins/arm/sync_fetch_and_sub_4.S @@ -1,19 +1,19 @@ -/*===-- sync_fetch_and_sub_4.S - ------------------------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __sync_fetch_and_sub_4 function for the ARM - * architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- sync_fetch_and_sub_4.S - ------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __sync_fetch_and_sub_4 function for the ARM +// architecture. +// +//===----------------------------------------------------------------------===// #include "sync-ops.h" -/* "subs" is 2 bytes shorter than "sub". */ +// "subs" is 2 bytes shorter than "sub". #define sub_4(rD, rN, rM) sub rD, rN, rM SYNC_OP_4(sub_4) diff --git a/lib/builtins/arm/sync_fetch_and_sub_8.S b/lib/builtins/arm/sync_fetch_and_sub_8.S index 123aec1d0..25a4a1076 100644 --- a/lib/builtins/arm/sync_fetch_and_sub_8.S +++ b/lib/builtins/arm/sync_fetch_and_sub_8.S @@ -1,15 +1,15 @@ -/*===-- sync_fetch_and_sub_8.S - ------------------------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __sync_fetch_and_sub_8 function for the ARM - * architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- sync_fetch_and_sub_8.S - ------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __sync_fetch_and_sub_8 function for the ARM +// architecture. +// +//===----------------------------------------------------------------------===// #include "sync-ops.h" diff --git a/lib/builtins/arm/sync_fetch_and_umax_4.S b/lib/builtins/arm/sync_fetch_and_umax_4.S index 12ef3b60f..a7b233b15 100644 --- a/lib/builtins/arm/sync_fetch_and_umax_4.S +++ b/lib/builtins/arm/sync_fetch_and_umax_4.S @@ -1,15 +1,15 @@ -/*===-- sync_fetch_and_umax_4.S - ------------------------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __sync_fetch_and_umax_4 function for the ARM - * architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- sync_fetch_and_umax_4.S - ------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __sync_fetch_and_umax_4 function for the ARM +// architecture. +// +//===----------------------------------------------------------------------===// #include "sync-ops.h" diff --git a/lib/builtins/arm/sync_fetch_and_umax_8.S b/lib/builtins/arm/sync_fetch_and_umax_8.S index 4319b49b0..aa5213ff1 100644 --- a/lib/builtins/arm/sync_fetch_and_umax_8.S +++ b/lib/builtins/arm/sync_fetch_and_umax_8.S @@ -1,15 +1,15 @@ -/*===-- sync_fetch_and_umax_8.S - ------------------------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __sync_fetch_and_umax_8 function for the ARM - * architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- sync_fetch_and_umax_8.S - ------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __sync_fetch_and_umax_8 function for the ARM +// architecture. +// +//===----------------------------------------------------------------------===// #include "sync-ops.h" diff --git a/lib/builtins/arm/sync_fetch_and_umin_4.S b/lib/builtins/arm/sync_fetch_and_umin_4.S index f384db6d3..c7a9c89df 100644 --- a/lib/builtins/arm/sync_fetch_and_umin_4.S +++ b/lib/builtins/arm/sync_fetch_and_umin_4.S @@ -1,15 +1,15 @@ -/*===-- sync_fetch_and_umin_4.S - ------------------------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __sync_fetch_and_umin_4 function for the ARM - * architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- sync_fetch_and_umin_4.S - ------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __sync_fetch_and_umin_4 function for the ARM +// architecture. +// +//===----------------------------------------------------------------------===// #include "sync-ops.h" diff --git a/lib/builtins/arm/sync_fetch_and_umin_8.S b/lib/builtins/arm/sync_fetch_and_umin_8.S index a47142fa0..8b40541ab 100644 --- a/lib/builtins/arm/sync_fetch_and_umin_8.S +++ b/lib/builtins/arm/sync_fetch_and_umin_8.S @@ -1,15 +1,15 @@ -/*===-- sync_fetch_and_umin_8.S - ------------------------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __sync_fetch_and_umin_8 function for the ARM - * architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- sync_fetch_and_umin_8.S - ------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __sync_fetch_and_umin_8 function for the ARM +// architecture. +// +//===----------------------------------------------------------------------===// #include "sync-ops.h" diff --git a/lib/builtins/arm/sync_fetch_and_xor_4.S b/lib/builtins/arm/sync_fetch_and_xor_4.S index 8143973cb..f509191d0 100644 --- a/lib/builtins/arm/sync_fetch_and_xor_4.S +++ b/lib/builtins/arm/sync_fetch_and_xor_4.S @@ -1,15 +1,15 @@ -/*===-- sync_fetch_and_xor_4.S - ------------------------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __sync_fetch_and_xor_4 function for the ARM - * architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- sync_fetch_and_xor_4.S - ------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __sync_fetch_and_xor_4 function for the ARM +// architecture. +// +//===----------------------------------------------------------------------===// #include "sync-ops.h" diff --git a/lib/builtins/arm/sync_fetch_and_xor_8.S b/lib/builtins/arm/sync_fetch_and_xor_8.S index ce861d4c7..7436eb1d4 100644 --- a/lib/builtins/arm/sync_fetch_and_xor_8.S +++ b/lib/builtins/arm/sync_fetch_and_xor_8.S @@ -1,15 +1,15 @@ -/*===-- sync_fetch_and_xor_8.S - ------------------------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __sync_fetch_and_xor_8 function for the ARM - * architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- sync_fetch_and_xor_8.S - ------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __sync_fetch_and_xor_8 function for the ARM +// architecture. +// +//===----------------------------------------------------------------------===// #include "sync-ops.h" diff --git a/lib/builtins/arm/sync_synchronize.S b/lib/builtins/arm/sync_synchronize.S index 064e4f93e..dd06e7191 100644 --- a/lib/builtins/arm/sync_synchronize.S +++ b/lib/builtins/arm/sync_synchronize.S @@ -8,12 +8,10 @@ #include "../assembly.h" -// // When compiling a use of the gcc built-in __sync_synchronize() in thumb1 mode -// the compiler may emit a call to __sync_synchronize. -// On Darwin the implementation jumps to an OS supplied function named +// the compiler may emit a call to __sync_synchronize. +// On Darwin the implementation jumps to an OS supplied function named // OSMemoryBarrier -// .text .syntax unified @@ -30,7 +28,7 @@ END_COMPILERRT_FUNCTION(__sync_synchronize) // tell linker it can break up file at label boundaries .subsections_via_symbols - + #endif NO_EXEC_STACK_DIRECTIVE diff --git a/lib/builtins/arm/truncdfsf2vfp.S b/lib/builtins/arm/truncdfsf2vfp.S index 06f3f21cd..a3c0a7346 100644 --- a/lib/builtins/arm/truncdfsf2vfp.S +++ b/lib/builtins/arm/truncdfsf2vfp.S @@ -12,7 +12,7 @@ // extern float __truncdfsf2vfp(double a); // // Converts double precision float to signle precision result. -// Uses Darwin calling convention where a double precision parameter is +// Uses Darwin calling convention where a double precision parameter is // passed in a R0/R1 pair and a signle precision result is returned in R0. // .syntax unified diff --git a/lib/builtins/arm/udivmodsi4.S b/lib/builtins/arm/udivmodsi4.S index 17a258000..0f40575fe 100644 --- a/lib/builtins/arm/udivmodsi4.S +++ b/lib/builtins/arm/udivmodsi4.S @@ -1,15 +1,15 @@ -/*===-- udivmodsi4.S - 32-bit unsigned integer divide and modulus ---------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __udivmodsi4 (32-bit unsigned integer divide and - * modulus) function for the ARM 32-bit architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- udivmodsi4.S - 32-bit unsigned integer divide and modulus ---------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __udivmodsi4 (32-bit unsigned integer divide and +// modulus) function for the ARM 32-bit architecture. +// +//===----------------------------------------------------------------------===// #include "../assembly.h" @@ -38,26 +38,25 @@ DEFINE_COMPILERRT_FUNCTION(__udivmodsi4) beq LOCAL_LABEL(divby1) cmp r0, r1 bcc LOCAL_LABEL(quotient0) - /* - * Implement division using binary long division algorithm. - * - * r0 is the numerator, r1 the denominator. - * - * The code before JMP computes the correct shift I, so that - * r0 and (r1 << I) have the highest bit set in the same position. - * At the time of JMP, ip := .Ldiv0block - 12 * I. - * This depends on the fixed instruction size of block. - * For ARM mode, this is 12 Bytes, for THUMB mode 14 Bytes. - * - * block(shift) implements the test-and-update-quotient core. - * It assumes (r0 << shift) can be computed without overflow and - * that (r0 << shift) < 2 * r1. The quotient is stored in r3. - */ + + // Implement division using binary long division algorithm. + // + // r0 is the numerator, r1 the denominator. + // + // The code before JMP computes the correct shift I, so that + // r0 and (r1 << I) have the highest bit set in the same position. + // At the time of JMP, ip := .Ldiv0block - 12 * I. + // This depends on the fixed instruction size of block. + // For ARM mode, this is 12 Bytes, for THUMB mode 14 Bytes. + // + // block(shift) implements the test-and-update-quotient core. + // It assumes (r0 << shift) can be computed without overflow and + // that (r0 << shift) < 2 * r1. The quotient is stored in r3. # ifdef __ARM_FEATURE_CLZ clz ip, r0 clz r3, r1 - /* r0 >= r1 implies clz(r0) <= clz(r1), so ip <= r3. */ + // r0 >= r1 implies clz(r0) <= clz(r1), so ip <= r3. sub r3, r3, ip # if defined(USE_THUMB_2) adr ip, LOCAL_LABEL(div0block) + 1 @@ -98,11 +97,11 @@ DEFINE_COMPILERRT_FUNCTION(__udivmodsi4) movhs r4, r3 subhs ip, ip, #(2 * 12) - /* Last block, no need to update r3 or r4. */ + // Last block, no need to update r3 or r4. cmp r1, r4, lsr #1 subls ip, ip, #(1 * 12) - ldr r4, [sp], #8 /* restore r4, we are done with it. */ + ldr r4, [sp], #8 // restore r4, we are done with it. mov r3, #0 JMP(ip) @@ -163,7 +162,7 @@ LOCAL_LABEL(divby1): mov r3, #0 str r3, [r2] JMP(lr) -#endif /* __ARM_ARCH_EXT_IDIV__ */ +#endif // __ARM_ARCH_EXT_IDIV__ LOCAL_LABEL(divby0): mov r0, #0 diff --git a/lib/builtins/arm/udivsi3.S b/lib/builtins/arm/udivsi3.S index d310d8129..9b1b035b3 100644 --- a/lib/builtins/arm/udivsi3.S +++ b/lib/builtins/arm/udivsi3.S @@ -1,15 +1,15 @@ -/*===-- udivsi3.S - 32-bit unsigned integer divide ------------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __udivsi3 (32-bit unsigned integer divide) - * function for the ARM 32-bit architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- udivsi3.S - 32-bit unsigned integer divide ------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __udivsi3 (32-bit unsigned integer divide) +// function for the ARM 32-bit architecture. +// +//===----------------------------------------------------------------------===// #include "../assembly.h" @@ -39,7 +39,7 @@ LOCAL_LABEL(divby0): JMP(lr) # endif -#else /* ! __ARM_ARCH_EXT_IDIV__ */ +#else // ! __ARM_ARCH_EXT_IDIV__ cmp r1, #1 bcc LOCAL_LABEL(divby0) #if defined(USE_THUMB_1) @@ -62,26 +62,24 @@ LOCAL_LABEL(num_ge_denom): JMPc(lr, cc) #endif - /* - * Implement division using binary long division algorithm. - * - * r0 is the numerator, r1 the denominator. - * - * The code before JMP computes the correct shift I, so that - * r0 and (r1 << I) have the highest bit set in the same position. - * At the time of JMP, ip := .Ldiv0block - 12 * I. - * This depends on the fixed instruction size of block. - * For ARM mode, this is 12 Bytes, for THUMB mode 14 Bytes. - * - * block(shift) implements the test-and-update-quotient core. - * It assumes (r0 << shift) can be computed without overflow and - * that (r0 << shift) < 2 * r1. The quotient is stored in r3. - */ + // Implement division using binary long division algorithm. + // + // r0 is the numerator, r1 the denominator. + // + // The code before JMP computes the correct shift I, so that + // r0 and (r1 << I) have the highest bit set in the same position. + // At the time of JMP, ip := .Ldiv0block - 12 * I. + // This depends on the fixed instruction size of block. + // For ARM mode, this is 12 Bytes, for THUMB mode 14 Bytes. + // + // block(shift) implements the test-and-update-quotient core. + // It assumes (r0 << shift) can be computed without overflow and + // that (r0 << shift) < 2 * r1. The quotient is stored in r3. # if defined(__ARM_FEATURE_CLZ) clz ip, r0 clz r3, r1 - /* r0 >= r1 implies clz(r0) <= clz(r1), so ip <= r3. */ + // r0 >= r1 implies clz(r0) <= clz(r1), so ip <= r3. sub r3, r3, ip # if defined(USE_THUMB_2) adr ip, LOCAL_LABEL(div0block) + 1 @@ -93,7 +91,7 @@ LOCAL_LABEL(num_ge_denom): sub ip, ip, r3, lsl #3 mov r3, #0 bx ip -# else /* No CLZ Feature */ +# else // No CLZ Feature # if defined(USE_THUMB_2) # error THUMB mode requires CLZ or UDIV # endif @@ -159,7 +157,7 @@ LOCAL_LABEL(skip_2): subhs ip, ip, #(2 * BLOCK_SIZE) # endif - /* Last block, no need to update r2 or r3. */ + // Last block, no need to update r2 or r3. # if defined(USE_THUMB_1) lsrs r3, r2, #1 cmp r3, r1 @@ -179,12 +177,12 @@ LOCAL_LABEL(skip_1): JMP(ip) # endif -# endif /* __ARM_FEATURE_CLZ */ +# endif // __ARM_FEATURE_CLZ #define IMM # - /* due to the range limit of branch in Thumb1, we have to place the - block closer */ + // due to the range limit of branch in Thumb1, we have to place the + // block closer LOCAL_LABEL(divby0): movs r0, #0 # if defined(__ARM_EABI__) @@ -203,13 +201,13 @@ LOCAL_LABEL(divby0): blo LOCAL_LABEL(block_skip_##shift); \ subs r0, r0, r2; \ LOCAL_LABEL(block_skip_##shift) :; \ - adcs r3, r3 /* same as ((r3 << 1) | Carry). Carry is set if r0 >= r2. */ + adcs r3, r3 // same as ((r3 << 1) | Carry). Carry is set if r0 >= r2. - /* TODO: if current location counter is not not word aligned, we don't - need the .p2align and nop */ - /* Label div0block must be word-aligned. First align block 31 */ + // TODO: if current location counter is not not word aligned, we don't + // need the .p2align and nop + // Label div0block must be word-aligned. First align block 31 .p2align 2 - nop /* Padding to align div0block as 31 blocks = 310 bytes */ + nop // Padding to align div0block as 31 blocks = 310 bytes #else #define block(shift) \ @@ -255,7 +253,7 @@ LOCAL_LABEL(div0block): mov r0, r3 JMP(lr) -#endif /* __ARM_ARCH_EXT_IDIV__ */ +#endif // __ARM_ARCH_EXT_IDIV__ END_COMPILERRT_FUNCTION(__udivsi3) diff --git a/lib/builtins/arm/umodsi3.S b/lib/builtins/arm/umodsi3.S index 261a5c74c..5ab78de17 100644 --- a/lib/builtins/arm/umodsi3.S +++ b/lib/builtins/arm/umodsi3.S @@ -1,15 +1,15 @@ -/*===-- umodsi3.S - 32-bit unsigned integer modulus -----------------------===// - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------===// - * - * This file implements the __umodsi3 (32-bit unsigned integer modulus) - * function for the ARM 32-bit architecture. - * - *===----------------------------------------------------------------------===*/ +//===-- umodsi3.S - 32-bit unsigned integer modulus -----------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the __umodsi3 (32-bit unsigned integer modulus) +// function for the ARM 32-bit architecture. +// +//===----------------------------------------------------------------------===// #include "../assembly.h" @@ -37,26 +37,25 @@ DEFINE_COMPILERRT_FUNCTION(__umodsi3) cmp r0, r1 IT(cc) JMPc(lr, cc) - /* - * Implement division using binary long division algorithm. - * - * r0 is the numerator, r1 the denominator. - * - * The code before JMP computes the correct shift I, so that - * r0 and (r1 << I) have the highest bit set in the same position. - * At the time of JMP, ip := .Ldiv0block - 8 * I. - * This depends on the fixed instruction size of block. - * For ARM mode, this is 8 Bytes, for THUMB mode 10 Bytes. - * - * block(shift) implements the test-and-update-quotient core. - * It assumes (r0 << shift) can be computed without overflow and - * that (r0 << shift) < 2 * r1. The quotient is stored in r3. - */ + + // Implement division using binary long division algorithm. + // + // r0 is the numerator, r1 the denominator. + // + // The code before JMP computes the correct shift I, so that + // r0 and (r1 << I) have the highest bit set in the same position. + // At the time of JMP, ip := .Ldiv0block - 8 * I. + // This depends on the fixed instruction size of block. + // For ARM mode, this is 8 Bytes, for THUMB mode 10 Bytes. + // + // block(shift) implements the test-and-update-quotient core. + // It assumes (r0 << shift) can be computed without overflow and + // that (r0 << shift) < 2 * r1. The quotient is stored in r3. # ifdef __ARM_FEATURE_CLZ clz ip, r0 clz r3, r1 - /* r0 >= r1 implies clz(r0) <= clz(r1), so ip <= r3. */ + // r0 >= r1 implies clz(r0) <= clz(r1), so ip <= r3. sub r3, r3, ip # if defined(USE_THUMB_2) adr ip, LOCAL_LABEL(div0block) + 1 @@ -93,7 +92,7 @@ DEFINE_COMPILERRT_FUNCTION(__umodsi3) movhs r2, r3 subhs ip, ip, #(2 * 8) - /* Last block, no need to update r2 or r3. */ + // Last block, no need to update r2 or r3. cmp r1, r2, lsr #1 subls ip, ip, #(1 * 8) @@ -141,7 +140,7 @@ DEFINE_COMPILERRT_FUNCTION(__umodsi3) LOCAL_LABEL(div0block): block(0) JMP(lr) -#endif /* __ARM_ARCH_EXT_IDIV__ */ +#endif // __ARM_ARCH_EXT_IDIV__ LOCAL_LABEL(divby0): mov r0, #0 diff --git a/lib/builtins/arm/unorddf2vfp.S b/lib/builtins/arm/unorddf2vfp.S index d5f51d4a3..ea36a1cb5 100644 --- a/lib/builtins/arm/unorddf2vfp.S +++ b/lib/builtins/arm/unorddf2vfp.S @@ -12,7 +12,7 @@ // extern int __unorddf2vfp(double a, double b); // // Returns one iff a or b is NaN -// Uses Darwin calling convention where double precision arguments are passsed +// Uses Darwin calling convention where double precision arguments are passsed // like in GPR pairs. // .syntax unified diff --git a/lib/builtins/arm/unordsf2vfp.S b/lib/builtins/arm/unordsf2vfp.S index 05ac67af1..731129732 100644 --- a/lib/builtins/arm/unordsf2vfp.S +++ b/lib/builtins/arm/unordsf2vfp.S @@ -12,7 +12,7 @@ // extern int __unordsf2vfp(float a, float b); // // Returns one iff a or b is NaN -// Uses Darwin calling convention where single precision arguments are passsed +// Uses Darwin calling convention where single precision arguments are passsed // like 32-bit ints // .syntax unified diff --git a/lib/builtins/ashldi3.c b/lib/builtins/ashldi3.c index 8fd06740d..66748c600 100644 --- a/lib/builtins/ashldi3.c +++ b/lib/builtins/ashldi3.c @@ -1,33 +1,30 @@ -/* ====-- ashldi3.c - Implement __ashldi3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __ashldi3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +// ====-- ashldi3.c - Implement __ashldi3 ---------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __ashldi3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a << b */ +// Returns: a << b -/* Precondition: 0 <= b < bits_in_dword */ +// Precondition: 0 <= b < bits_in_dword COMPILER_RT_ABI di_int __ashldi3(di_int a, si_int b) { const int bits_in_word = (int)(sizeof(si_int) * CHAR_BIT); dwords input; dwords result; input.all = a; - if (b & bits_in_word) /* bits_in_word <= b < bits_in_dword */ - { + if (b & bits_in_word) /* bits_in_word <= b < bits_in_dword */ { result.s.low = 0; result.s.high = input.s.low << (b - bits_in_word); - } else /* 0 <= b < bits_in_word */ - { + } else /* 0 <= b < bits_in_word */ { if (b == 0) return a; result.s.low = input.s.low << b; diff --git a/lib/builtins/ashlti3.c b/lib/builtins/ashlti3.c index fd63785c5..2d7bd4a89 100644 --- a/lib/builtins/ashlti3.c +++ b/lib/builtins/ashlti3.c @@ -1,35 +1,32 @@ -/* ===-- ashlti3.c - Implement __ashlti3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __ashlti3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- ashlti3.c - Implement __ashlti3 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __ashlti3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: a << b */ +// Returns: a << b -/* Precondition: 0 <= b < bits_in_tword */ +// Precondition: 0 <= b < bits_in_tword COMPILER_RT_ABI ti_int __ashlti3(ti_int a, si_int b) { const int bits_in_dword = (int)(sizeof(di_int) * CHAR_BIT); twords input; twords result; input.all = a; - if (b & bits_in_dword) /* bits_in_dword <= b < bits_in_tword */ - { + if (b & bits_in_dword) /* bits_in_dword <= b < bits_in_tword */ { result.s.low = 0; result.s.high = input.s.low << (b - bits_in_dword); - } else /* 0 <= b < bits_in_dword */ - { + } else /* 0 <= b < bits_in_dword */ { if (b == 0) return a; result.s.low = input.s.low << b; @@ -38,4 +35,4 @@ COMPILER_RT_ABI ti_int __ashlti3(ti_int a, si_int b) { return result.all; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/ashrdi3.c b/lib/builtins/ashrdi3.c index 3f2c2ff86..600948488 100644 --- a/lib/builtins/ashrdi3.c +++ b/lib/builtins/ashrdi3.c @@ -1,34 +1,31 @@ -/*===-- ashrdi3.c - Implement __ashrdi3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __ashrdi3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- ashrdi3.c - Implement __ashrdi3 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __ashrdi3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: arithmetic a >> b */ +// Returns: arithmetic a >> b -/* Precondition: 0 <= b < bits_in_dword */ +// Precondition: 0 <= b < bits_in_dword COMPILER_RT_ABI di_int __ashrdi3(di_int a, si_int b) { const int bits_in_word = (int)(sizeof(si_int) * CHAR_BIT); dwords input; dwords result; input.all = a; - if (b & bits_in_word) /* bits_in_word <= b < bits_in_dword */ - { - /* result.s.high = input.s.high < 0 ? -1 : 0 */ + if (b & bits_in_word) /* bits_in_word <= b < bits_in_dword */ { + // result.s.high = input.s.high < 0 ? -1 : 0 result.s.high = input.s.high >> (bits_in_word - 1); result.s.low = input.s.high >> (b - bits_in_word); - } else /* 0 <= b < bits_in_word */ - { + } else /* 0 <= b < bits_in_word */ { if (b == 0) return a; result.s.high = input.s.high >> b; diff --git a/lib/builtins/ashrti3.c b/lib/builtins/ashrti3.c index 98ffefb01..f573b6d6c 100644 --- a/lib/builtins/ashrti3.c +++ b/lib/builtins/ashrti3.c @@ -1,36 +1,33 @@ -/* ===-- ashrti3.c - Implement __ashrti3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __ashrti3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- ashrti3.c - Implement __ashrti3 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __ashrti3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: arithmetic a >> b */ +// Returns: arithmetic a >> b -/* Precondition: 0 <= b < bits_in_tword */ +// Precondition: 0 <= b < bits_in_tword COMPILER_RT_ABI ti_int __ashrti3(ti_int a, si_int b) { const int bits_in_dword = (int)(sizeof(di_int) * CHAR_BIT); twords input; twords result; input.all = a; - if (b & bits_in_dword) /* bits_in_dword <= b < bits_in_tword */ - { - /* result.s.high = input.s.high < 0 ? -1 : 0 */ + if (b & bits_in_dword) /* bits_in_dword <= b < bits_in_tword */ { + // result.s.high = input.s.high < 0 ? -1 : 0 result.s.high = input.s.high >> (bits_in_dword - 1); result.s.low = input.s.high >> (b - bits_in_dword); - } else /* 0 <= b < bits_in_dword */ - { + } else /* 0 <= b < bits_in_dword */ { if (b == 0) return a; result.s.high = input.s.high >> b; @@ -39,4 +36,4 @@ COMPILER_RT_ABI ti_int __ashrti3(ti_int a, si_int b) { return result.all; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/assembly.h b/lib/builtins/assembly.h index ff49fd422..f437cb87f 100644 --- a/lib/builtins/assembly.h +++ b/lib/builtins/assembly.h @@ -1,16 +1,15 @@ -/* ===-- assembly.h - compiler-rt assembler support macros -----------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file defines macros for use in compiler-rt assembler source. - * This file is not part of the interface of this library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- assembly.h - compiler-rt assembler support macros -----------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file defines macros for use in compiler-rt assembler source. +// This file is not part of the interface of this library. +// +//===----------------------------------------------------------------------===// #ifndef COMPILERRT_ASSEMBLY_H #define COMPILERRT_ASSEMBLY_H @@ -68,11 +67,9 @@ #if defined(__arm__) -/* - * Determine actual [ARM][THUMB[1][2]] ISA using compiler predefined macros: - * - for '-mthumb -march=armv6' compiler defines '__thumb__' - * - for '-mthumb -march=armv7' compiler defines '__thumb__' and '__thumb2__' - */ +// Determine actual [ARM][THUMB[1][2]] ISA using compiler predefined macros: +// - for '-mthumb -march=armv6' compiler defines '__thumb__' +// - for '-mthumb -march=armv7' compiler defines '__thumb__' and '__thumb2__' #if defined(__thumb2__) || defined(__thumb__) #define DEFINE_CODE_STATE .thumb SEPARATOR #define DECLARE_FUNC_ENCODING .thumb_func SEPARATOR @@ -200,4 +197,4 @@ #define END_COMPILERRT_FUNCTION(name) #endif -#endif /* COMPILERRT_ASSEMBLY_H */ +#endif // COMPILERRT_ASSEMBLY_H diff --git a/lib/builtins/atomic.c b/lib/builtins/atomic.c index b273f0c4c..0f82803a6 100644 --- a/lib/builtins/atomic.c +++ b/lib/builtins/atomic.c @@ -1,28 +1,27 @@ -/*===-- atomic.c - Implement support functions for atomic operations.------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------=== - * - * atomic.c defines a set of functions for performing atomic accesses on - * arbitrary-sized memory locations. This design uses locks that should - * be fast in the uncontended case, for two reasons: - * - * 1) This code must work with C programs that do not link to anything - * (including pthreads) and so it should not depend on any pthread - * functions. - * 2) Atomic operations, rather than explicit mutexes, are most commonly used - * on code where contended operations are rate. - * - * To avoid needing a per-object lock, this code allocates an array of - * locks and hashes the object pointers to find the one that it should use. - * For operations that must be atomic on two locations, the lower lock is - * always acquired first, to avoid deadlock. - * - *===----------------------------------------------------------------------=== - */ +//===-- atomic.c - Implement support functions for atomic operations.------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// atomic.c defines a set of functions for performing atomic accesses on +// arbitrary-sized memory locations. This design uses locks that should +// be fast in the uncontended case, for two reasons: +// +// 1) This code must work with C programs that do not link to anything +// (including pthreads) and so it should not depend on any pthread +// functions. +// 2) Atomic operations, rather than explicit mutexes, are most commonly used +// on code where contended operations are rate. +// +// To avoid needing a per-object lock, this code allocates an array of +// locks and hashes the object pointers to find the one that it should use. +// For operations that must be atomic on two locations, the lower lock is +// always acquired first, to avoid deadlock. +// +//===----------------------------------------------------------------------===// #include <stdint.h> #include <string.h> diff --git a/lib/builtins/atomic_flag_clear.c b/lib/builtins/atomic_flag_clear.c index dd3aa5706..983e5d7f0 100644 --- a/lib/builtins/atomic_flag_clear.c +++ b/lib/builtins/atomic_flag_clear.c @@ -1,15 +1,14 @@ -/*===-- atomic_flag_clear.c -------------------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===------------------------------------------------------------------------=== - * - * This file implements atomic_flag_clear from C11's stdatomic.h. - * - *===------------------------------------------------------------------------=== - */ +//===-- atomic_flag_clear.c -----------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements atomic_flag_clear from C11's stdatomic.h. +// +//===----------------------------------------------------------------------===// #ifndef __has_include #define __has_include(inc) 0 diff --git a/lib/builtins/atomic_flag_clear_explicit.c b/lib/builtins/atomic_flag_clear_explicit.c index dbcecba6c..e61c06476 100644 --- a/lib/builtins/atomic_flag_clear_explicit.c +++ b/lib/builtins/atomic_flag_clear_explicit.c @@ -1,15 +1,14 @@ -/*===-- atomic_flag_clear_explicit.c ----------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===------------------------------------------------------------------------=== - * - * This file implements atomic_flag_clear_explicit from C11's stdatomic.h. - * - *===------------------------------------------------------------------------=== - */ +//===-- atomic_flag_clear_explicit.c --------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements atomic_flag_clear_explicit from C11's stdatomic.h. +// +//===----------------------------------------------------------------------===// #ifndef __has_include #define __has_include(inc) 0 diff --git a/lib/builtins/atomic_flag_test_and_set.c b/lib/builtins/atomic_flag_test_and_set.c index bfec77d64..ee22b08b5 100644 --- a/lib/builtins/atomic_flag_test_and_set.c +++ b/lib/builtins/atomic_flag_test_and_set.c @@ -1,15 +1,14 @@ -/*===-- atomic_flag_test_and_set.c ------------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===------------------------------------------------------------------------=== - * - * This file implements atomic_flag_test_and_set from C11's stdatomic.h. - * - *===------------------------------------------------------------------------=== - */ +//===-- atomic_flag_test_and_set.c ----------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements atomic_flag_test_and_set from C11's stdatomic.h. +// +//===----------------------------------------------------------------------===// #ifndef __has_include #define __has_include(inc) 0 diff --git a/lib/builtins/atomic_flag_test_and_set_explicit.c b/lib/builtins/atomic_flag_test_and_set_explicit.c index 7223a66dd..8c9d03994 100644 --- a/lib/builtins/atomic_flag_test_and_set_explicit.c +++ b/lib/builtins/atomic_flag_test_and_set_explicit.c @@ -1,15 +1,14 @@ -/*===-- atomic_flag_test_and_set_explicit.c ---------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===------------------------------------------------------------------------=== - * - * This file implements atomic_flag_test_and_set_explicit from C11's stdatomic.h - * - *===------------------------------------------------------------------------=== - */ +//===-- atomic_flag_test_and_set_explicit.c -------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements atomic_flag_test_and_set_explicit from C11's stdatomic.h +// +//===----------------------------------------------------------------------===// #ifndef __has_include #define __has_include(inc) 0 diff --git a/lib/builtins/atomic_signal_fence.c b/lib/builtins/atomic_signal_fence.c index db9deb82d..f4f5169d3 100644 --- a/lib/builtins/atomic_signal_fence.c +++ b/lib/builtins/atomic_signal_fence.c @@ -1,15 +1,14 @@ -/*===-- atomic_signal_fence.c -----------------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===------------------------------------------------------------------------=== - * - * This file implements atomic_signal_fence from C11's stdatomic.h. - * - *===------------------------------------------------------------------------=== - */ +//===-- atomic_signal_fence.c ---------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements atomic_signal_fence from C11's stdatomic.h. +// +//===----------------------------------------------------------------------===// #ifndef __has_include #define __has_include(inc) 0 diff --git a/lib/builtins/atomic_thread_fence.c b/lib/builtins/atomic_thread_fence.c index 022112147..5659ecb0b 100644 --- a/lib/builtins/atomic_thread_fence.c +++ b/lib/builtins/atomic_thread_fence.c @@ -1,15 +1,14 @@ -/*===-- atomic_thread_fence.c -----------------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===------------------------------------------------------------------------=== - * - * This file implements atomic_thread_fence from C11's stdatomic.h. - * - *===------------------------------------------------------------------------=== - */ +//===-- atomic_thread_fence.c ---------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements atomic_thread_fence from C11's stdatomic.h. +// +//===----------------------------------------------------------------------===// #ifndef __has_include #define __has_include(inc) 0 diff --git a/lib/builtins/bswapdi2.c b/lib/builtins/bswapdi2.c index eb0ad919e..cd049f58e 100644 --- a/lib/builtins/bswapdi2.c +++ b/lib/builtins/bswapdi2.c @@ -1,15 +1,14 @@ -/* ===-- bswapdi2.c - Implement __bswapdi2 ---------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __bswapdi2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- bswapdi2.c - Implement __bswapdi2 ---------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __bswapdi2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" diff --git a/lib/builtins/bswapsi2.c b/lib/builtins/bswapsi2.c index 78edf5f52..ec566d61a 100644 --- a/lib/builtins/bswapsi2.c +++ b/lib/builtins/bswapsi2.c @@ -1,15 +1,14 @@ -/* ===-- bswapsi2.c - Implement __bswapsi2 ---------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __bswapsi2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- bswapsi2.c - Implement __bswapsi2 ---------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __bswapsi2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" diff --git a/lib/builtins/clear_cache.c b/lib/builtins/clear_cache.c index 8e4f35ea9..76dc1968c 100644 --- a/lib/builtins/clear_cache.c +++ b/lib/builtins/clear_cache.c @@ -1,11 +1,10 @@ -/* ===-- clear_cache.c - Implement __clear_cache ---------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- clear_cache.c - Implement __clear_cache ---------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #include <assert.h> @@ -16,8 +15,8 @@ #endif #if defined(_WIN32) -/* Forward declare Win32 APIs since the GCC mode driver does not handle the - newer SDKs as well as needed. */ +// Forward declare Win32 APIs since the GCC mode driver does not handle the +// newer SDKs as well as needed. uint32_t FlushInstructionCache(uintptr_t hProcess, void *lpBaseAddress, uintptr_t dwSize); uintptr_t GetCurrentProcess(void); @@ -42,42 +41,40 @@ uintptr_t GetCurrentProcess(void); #include <sys/syscall.h> #include <unistd.h> #if defined(__ANDROID__) && defined(__LP64__) -/* - * clear_mips_cache - Invalidates instruction cache for Mips. - */ +// clear_mips_cache - Invalidates instruction cache for Mips. static void clear_mips_cache(const void *Addr, size_t Size) { __asm__ volatile( ".set push\n" ".set noreorder\n" ".set noat\n" - "beq %[Size], $zero, 20f\n" /* If size == 0, branch around. */ + "beq %[Size], $zero, 20f\n" // If size == 0, branch around. "nop\n" - "daddu %[Size], %[Addr], %[Size]\n" /* Calculate end address + 1 */ - "rdhwr $v0, $1\n" /* Get step size for SYNCI. - $1 is $HW_SYNCI_Step */ - "beq $v0, $zero, 20f\n" /* If no caches require - synchronization, branch - around. */ + "daddu %[Size], %[Addr], %[Size]\n" // Calculate end address + 1 + "rdhwr $v0, $1\n" // Get step size for SYNCI. + // $1 is $HW_SYNCI_Step + "beq $v0, $zero, 20f\n" // If no caches require + // synchronization, branch + // around. "nop\n" "10:\n" - "synci 0(%[Addr])\n" /* Synchronize all caches around - address. */ - "daddu %[Addr], %[Addr], $v0\n" /* Add step size. */ - "sltu $at, %[Addr], %[Size]\n" /* Compare current with end - address. */ - "bne $at, $zero, 10b\n" /* Branch if more to do. */ + "synci 0(%[Addr])\n" // Synchronize all caches around + // address. + "daddu %[Addr], %[Addr], $v0\n" // Add step size. + "sltu $at, %[Addr], %[Size]\n" // Compare current with end + // address. + "bne $at, $zero, 10b\n" // Branch if more to do. "nop\n" - "sync\n" /* Clear memory hazards. */ + "sync\n" // Clear memory hazards. "20:\n" "bal 30f\n" "nop\n" "30:\n" - "daddiu $ra, $ra, 12\n" /* $ra has a value of $pc here. - Add offset of 12 to point to the - instruction after the last nop. - */ - "jr.hb $ra\n" /* Return, clearing instruction - hazards. */ + "daddiu $ra, $ra, 12\n" // $ra has a value of $pc here. + // Add offset of 12 to point to the + // instruction after the last nop. + // + "jr.hb $ra\n" // Return, clearing instruction + // hazards. "nop\n" ".set pop\n" : [ Addr ] "+r"(Addr), [ Size ] "+r"(Size)::"at", "ra", "v0", "memory"); @@ -85,19 +82,15 @@ static void clear_mips_cache(const void *Addr, size_t Size) { #endif #endif -/* - * The compiler generates calls to __clear_cache() when creating - * trampoline functions on the stack for use with nested functions. - * It is expected to invalidate the instruction cache for the - * specified range. - */ +// The compiler generates calls to __clear_cache() when creating +// trampoline functions on the stack for use with nested functions. +// It is expected to invalidate the instruction cache for the +// specified range. void __clear_cache(void *start, void *end) { #if __i386__ || __x86_64__ || defined(_M_IX86) || defined(_M_X64) -/* - * Intel processors have a unified instruction and data cache - * so there is nothing to do - */ +// Intel processors have a unified instruction and data cache +// so there is nothing to do #elif defined(_WIN32) && (defined(__arm__) || defined(__aarch64__)) FlushInstructionCache(GetCurrentProcess(), start, end - start); #elif defined(__arm__) && !defined(__APPLE__) @@ -109,14 +102,12 @@ void __clear_cache(void *start, void *end) { sysarch(ARM_SYNC_ICACHE, &arg); #elif defined(__linux__) -/* - * We used to include asm/unistd.h for the __ARM_NR_cacheflush define, but - * it also brought many other unused defines, as well as a dependency on - * kernel headers to be installed. - * - * This value is stable at least since Linux 3.13 and should remain so for - * compatibility reasons, warranting it's re-definition here. - */ +// We used to include asm/unistd.h for the __ARM_NR_cacheflush define, but +// it also brought many other unused defines, as well as a dependency on +// kernel headers to be installed. +// +// This value is stable at least since Linux 3.13 and should remain so for +// compatibility reasons, warranting it's re-definition here. #define __ARM_NR_cacheflush 0x0f0002 register int start_reg __asm("r0") = (int)(intptr_t)start; const register int end_reg __asm("r1") = (int)(intptr_t)end; @@ -154,10 +145,8 @@ void __clear_cache(void *start, void *end) { uint64_t ctr_el0; __asm __volatile("mrs %0, ctr_el0" : "=r"(ctr_el0)); - /* - * dc & ic instructions must use 64bit registers so we don't use - * uintptr_t in case this runs in an IPL32 environment. - */ + // dc & ic instructions must use 64bit registers so we don't use + // uintptr_t in case this runs in an IPL32 environment. const size_t dcache_line_size = 4 << ((ctr_el0 >> 16) & 15); for (addr = xstart & ~(dcache_line_size - 1); addr < xend; addr += dcache_line_size) @@ -186,7 +175,7 @@ void __clear_cache(void *start, void *end) { __asm__ volatile("isync"); #else #if __APPLE__ - /* On Darwin, sys_icache_invalidate() provides this functionality */ + // On Darwin, sys_icache_invalidate() provides this functionality sys_icache_invalidate(start, end - start); #else compilerrt_abort(); diff --git a/lib/builtins/clzdi2.c b/lib/builtins/clzdi2.c index 0ad2abc09..a0bacb2ae 100644 --- a/lib/builtins/clzdi2.c +++ b/lib/builtins/clzdi2.c @@ -1,31 +1,30 @@ -/* ===-- clzdi2.c - Implement __clzdi2 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __clzdi2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- clzdi2.c - Implement __clzdi2 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __clzdi2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: the number of leading 0-bits */ +// Returns: the number of leading 0-bits #if !defined(__clang__) && \ ((defined(__sparc__) && defined(__arch64__)) || defined(__mips64) || \ (defined(__riscv) && __SIZEOF_POINTER__ >= 8)) -/* On 64-bit architectures with neither a native clz instruction nor a native - * ctz instruction, gcc resolves __builtin_clz to __clzdi2 rather than - * __clzsi2, leading to infinite recursion. */ +// On 64-bit architectures with neither a native clz instruction nor a native +// ctz instruction, gcc resolves __builtin_clz to __clzdi2 rather than +// __clzsi2, leading to infinite recursion. #define __builtin_clz(a) __clzsi2(a) extern si_int __clzsi2(si_int); #endif -/* Precondition: a != 0 */ +// Precondition: a != 0 COMPILER_RT_ABI si_int __clzdi2(di_int a) { dwords x; diff --git a/lib/builtins/clzsi2.c b/lib/builtins/clzsi2.c index 90dc82d08..3f9f27f41 100644 --- a/lib/builtins/clzsi2.c +++ b/lib/builtins/clzsi2.c @@ -1,50 +1,48 @@ -/* ===-- clzsi2.c - Implement __clzsi2 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __clzsi2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- clzsi2.c - Implement __clzsi2 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __clzsi2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: the number of leading 0-bits */ +// Returns: the number of leading 0-bits -/* Precondition: a != 0 */ +// Precondition: a != 0 COMPILER_RT_ABI si_int __clzsi2(si_int a) { su_int x = (su_int)a; - si_int t = ((x & 0xFFFF0000) == 0) << 4; /* if (x is small) t = 16 else 0 */ - x >>= 16 - t; /* x = [0 - 0xFFFF] */ - su_int r = t; /* r = [0, 16] */ - /* return r + clz(x) */ + si_int t = ((x & 0xFFFF0000) == 0) << 4; // if (x is small) t = 16 else 0 + x >>= 16 - t; // x = [0 - 0xFFFF] + su_int r = t; // r = [0, 16] + // return r + clz(x) t = ((x & 0xFF00) == 0) << 3; - x >>= 8 - t; /* x = [0 - 0xFF] */ - r += t; /* r = [0, 8, 16, 24] */ - /* return r + clz(x) */ + x >>= 8 - t; // x = [0 - 0xFF] + r += t; // r = [0, 8, 16, 24] + // return r + clz(x) t = ((x & 0xF0) == 0) << 2; - x >>= 4 - t; /* x = [0 - 0xF] */ - r += t; /* r = [0, 4, 8, 12, 16, 20, 24, 28] */ - /* return r + clz(x) */ + x >>= 4 - t; // x = [0 - 0xF] + r += t; // r = [0, 4, 8, 12, 16, 20, 24, 28] + // return r + clz(x) t = ((x & 0xC) == 0) << 1; - x >>= 2 - t; /* x = [0 - 3] */ - r += t; /* r = [0 - 30] and is even */ - /* return r + clz(x) */ - /* switch (x) - * { - * case 0: - * return r + 2; - * case 1: - * return r + 1; - * case 2: - * case 3: - * return r; - * } - */ + x >>= 2 - t; // x = [0 - 3] + r += t; // r = [0 - 30] and is even + // return r + clz(x) + // switch (x) + // { + // case 0: + // return r + 2; + // case 1: + // return r + 1; + // case 2: + // case 3: + // return r; + // } return r + ((2 - x) & -((x & 2) == 0)); } diff --git a/lib/builtins/clzti2.c b/lib/builtins/clzti2.c index 7db2566d8..0c787104c 100644 --- a/lib/builtins/clzti2.c +++ b/lib/builtins/clzti2.c @@ -1,23 +1,22 @@ -/* ===-- clzti2.c - Implement __clzti2 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __clzti2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- clzti2.c - Implement __clzti2 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __clzti2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: the number of leading 0-bits */ +// Returns: the number of leading 0-bits -/* Precondition: a != 0 */ +// Precondition: a != 0 COMPILER_RT_ABI si_int __clzti2(ti_int a) { twords x; @@ -27,4 +26,4 @@ COMPILER_RT_ABI si_int __clzti2(ti_int a) { ((si_int)f & ((si_int)(sizeof(di_int) * CHAR_BIT))); } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/cmpdi2.c b/lib/builtins/cmpdi2.c index 67c611195..951db85b5 100644 --- a/lib/builtins/cmpdi2.c +++ b/lib/builtins/cmpdi2.c @@ -1,22 +1,20 @@ -/* ===-- cmpdi2.c - Implement __cmpdi2 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __cmpdi2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- cmpdi2.c - Implement __cmpdi2 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __cmpdi2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: if (a < b) returns 0 - * if (a == b) returns 1 - * if (a > b) returns 2 - */ +// Returns: if (a < b) returns 0 +// if (a == b) returns 1 +// if (a > b) returns 2 COMPILER_RT_ABI si_int __cmpdi2(di_int a, di_int b) { dwords x; @@ -35,10 +33,9 @@ COMPILER_RT_ABI si_int __cmpdi2(di_int a, di_int b) { } #ifdef __ARM_EABI__ -/* Returns: if (a < b) returns -1 - * if (a == b) returns 0 - * if (a > b) returns 1 - */ +// Returns: if (a < b) returns -1 +// if (a == b) returns 0 +// if (a > b) returns 1 COMPILER_RT_ABI si_int __aeabi_lcmp(di_int a, di_int b) { return __cmpdi2(a, b) - 1; } diff --git a/lib/builtins/cmpti2.c b/lib/builtins/cmpti2.c index 14a5b391f..7f0ee1b51 100644 --- a/lib/builtins/cmpti2.c +++ b/lib/builtins/cmpti2.c @@ -1,24 +1,22 @@ -/* ===-- cmpti2.c - Implement __cmpti2 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __cmpti2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- cmpti2.c - Implement __cmpti2 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __cmpti2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: if (a < b) returns 0 - * if (a == b) returns 1 - * if (a > b) returns 2 - */ +// Returns: if (a < b) returns 0 +// if (a == b) returns 1 +// if (a > b) returns 2 COMPILER_RT_ABI si_int __cmpti2(ti_int a, ti_int b) { twords x; @@ -36,4 +34,4 @@ COMPILER_RT_ABI si_int __cmpti2(ti_int a, ti_int b) { return 1; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/cpu_model.c b/lib/builtins/cpu_model.c index dcaf91429..fcc80b562 100644 --- a/lib/builtins/cpu_model.c +++ b/lib/builtins/cpu_model.c @@ -31,8 +31,8 @@ #endif enum VendorSignatures { - SIG_INTEL = 0x756e6547 /* Genu */, - SIG_AMD = 0x68747541 /* Auth */ + SIG_INTEL = 0x756e6547, // Genu + SIG_AMD = 0x68747541, // Auth }; enum ProcessorVendors { @@ -612,11 +612,11 @@ __attribute__((visibility("hidden"))) #endif unsigned int __cpu_features2; -/* A constructor function that is sets __cpu_model and __cpu_features2 with - the right values. This needs to run only once. This constructor is - given the highest priority and it should run before constructors without - the priority set. However, it still runs after ifunc initializers and - needs to be called explicitly there. */ +// A constructor function that is sets __cpu_model and __cpu_features2 with +// the right values. This needs to run only once. This constructor is +// given the highest priority and it should run before constructors without +// the priority set. However, it still runs after ifunc initializers and +// needs to be called explicitly there. int CONSTRUCTOR_ATTRIBUTE __cpu_indicator_init(void) { unsigned EAX, EBX, ECX, EDX; @@ -626,14 +626,14 @@ int CONSTRUCTOR_ATTRIBUTE __cpu_indicator_init(void) { unsigned Features = 0; unsigned Features2 = 0; - /* This function needs to run just once. */ + // This function needs to run just once. if (__cpu_model.__cpu_vendor) return 0; if (!isCpuIdSupported()) return -1; - /* Assume cpuid insn present. Run in level 0 to get vendor id. */ + // Assume cpuid insn present. Run in level 0 to get vendor id. if (getX86CpuIDAndInfo(0, &MaxLeaf, &Vendor, &ECX, &EDX) || MaxLeaf < 1) { __cpu_model.__cpu_vendor = VENDOR_OTHER; return -1; @@ -642,19 +642,19 @@ int CONSTRUCTOR_ATTRIBUTE __cpu_indicator_init(void) { detectX86FamilyModel(EAX, &Family, &Model); Brand_id = EBX & 0xff; - /* Find available features. */ + // Find available features. getAvailableFeatures(ECX, EDX, MaxLeaf, &Features, &Features2); __cpu_model.__cpu_features[0] = Features; __cpu_features2 = Features2; if (Vendor == SIG_INTEL) { - /* Get CPU type. */ + // Get CPU type. getIntelProcessorTypeAndSubtype(Family, Model, Brand_id, Features, Features2, &(__cpu_model.__cpu_type), &(__cpu_model.__cpu_subtype)); __cpu_model.__cpu_vendor = VENDOR_INTEL; } else if (Vendor == SIG_AMD) { - /* Get CPU type. */ + // Get CPU type. getAMDProcessorTypeAndSubtype(Family, Model, Features, Features2, &(__cpu_model.__cpu_type), &(__cpu_model.__cpu_subtype)); diff --git a/lib/builtins/ctzdi2.c b/lib/builtins/ctzdi2.c index 3df3e2cf7..9384aa605 100644 --- a/lib/builtins/ctzdi2.c +++ b/lib/builtins/ctzdi2.c @@ -1,31 +1,30 @@ -/* ===-- ctzdi2.c - Implement __ctzdi2 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __ctzdi2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- ctzdi2.c - Implement __ctzdi2 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __ctzdi2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: the number of trailing 0-bits */ +// Returns: the number of trailing 0-bits #if !defined(__clang__) && \ ((defined(__sparc__) && defined(__arch64__)) || defined(__mips64) || \ (defined(__riscv) && __SIZEOF_POINTER__ >= 8)) -/* On 64-bit architectures with neither a native clz instruction nor a native - * ctz instruction, gcc resolves __builtin_ctz to __ctzdi2 rather than - * __ctzsi2, leading to infinite recursion. */ +// On 64-bit architectures with neither a native clz instruction nor a native +// ctz instruction, gcc resolves __builtin_ctz to __ctzdi2 rather than +// __ctzsi2, leading to infinite recursion. #define __builtin_ctz(a) __ctzsi2(a) extern si_int __ctzsi2(si_int); #endif -/* Precondition: a != 0 */ +// Precondition: a != 0 COMPILER_RT_ABI si_int __ctzdi2(di_int a) { dwords x; diff --git a/lib/builtins/ctzsi2.c b/lib/builtins/ctzsi2.c index 405b2f771..09c6863b7 100644 --- a/lib/builtins/ctzsi2.c +++ b/lib/builtins/ctzsi2.c @@ -1,55 +1,53 @@ -/* ===-- ctzsi2.c - Implement __ctzsi2 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __ctzsi2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- ctzsi2.c - Implement __ctzsi2 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __ctzsi2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: the number of trailing 0-bits */ +// Returns: the number of trailing 0-bits -/* Precondition: a != 0 */ +// Precondition: a != 0 COMPILER_RT_ABI si_int __ctzsi2(si_int a) { su_int x = (su_int)a; si_int t = ((x & 0x0000FFFF) == 0) - << 4; /* if (x has no small bits) t = 16 else 0 */ - x >>= t; /* x = [0 - 0xFFFF] + higher garbage bits */ - su_int r = t; /* r = [0, 16] */ - /* return r + ctz(x) */ + << 4; // if (x has no small bits) t = 16 else 0 + x >>= t; // x = [0 - 0xFFFF] + higher garbage bits + su_int r = t; // r = [0, 16] + // return r + ctz(x) t = ((x & 0x00FF) == 0) << 3; - x >>= t; /* x = [0 - 0xFF] + higher garbage bits */ - r += t; /* r = [0, 8, 16, 24] */ - /* return r + ctz(x) */ + x >>= t; // x = [0 - 0xFF] + higher garbage bits + r += t; // r = [0, 8, 16, 24] + // return r + ctz(x) t = ((x & 0x0F) == 0) << 2; - x >>= t; /* x = [0 - 0xF] + higher garbage bits */ - r += t; /* r = [0, 4, 8, 12, 16, 20, 24, 28] */ - /* return r + ctz(x) */ + x >>= t; // x = [0 - 0xF] + higher garbage bits + r += t; // r = [0, 4, 8, 12, 16, 20, 24, 28] + // return r + ctz(x) t = ((x & 0x3) == 0) << 1; x >>= t; - x &= 3; /* x = [0 - 3] */ - r += t; /* r = [0 - 30] and is even */ - /* return r + ctz(x) */ + x &= 3; // x = [0 - 3] + r += t; // r = [0 - 30] and is even + // return r + ctz(x) - /* The branch-less return statement below is equivalent - * to the following switch statement: - * switch (x) - * { - * case 0: - * return r + 2; - * case 2: - * return r + 1; - * case 1: - * case 3: - * return r; - * } - */ + // The branch-less return statement below is equivalent + // to the following switch statement: + // switch (x) + // { + // case 0: + // return r + 2; + // case 2: + // return r + 1; + // case 1: + // case 3: + // return r; + // } return r + ((2 - (x >> 1)) & -((x & 1) == 0)); } diff --git a/lib/builtins/ctzti2.c b/lib/builtins/ctzti2.c index d65035b38..2a1312c84 100644 --- a/lib/builtins/ctzti2.c +++ b/lib/builtins/ctzti2.c @@ -1,23 +1,22 @@ -/* ===-- ctzti2.c - Implement __ctzti2 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __ctzti2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- ctzti2.c - Implement __ctzti2 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __ctzti2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: the number of trailing 0-bits */ +// Returns: the number of trailing 0-bits -/* Precondition: a != 0 */ +// Precondition: a != 0 COMPILER_RT_ABI si_int __ctzti2(ti_int a) { twords x; @@ -27,4 +26,4 @@ COMPILER_RT_ABI si_int __ctzti2(ti_int a) { ((si_int)f & ((si_int)(sizeof(di_int) * CHAR_BIT))); } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/divdc3.c b/lib/builtins/divdc3.c index d12ad837b..c2cf62874 100644 --- a/lib/builtins/divdc3.c +++ b/lib/builtins/divdc3.c @@ -1,22 +1,21 @@ -/* ===-- divdc3.c - Implement __divdc3 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __divdc3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- divdc3.c - Implement __divdc3 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __divdc3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #define DOUBLE_PRECISION #include "fp_lib.h" #include "int_lib.h" #include "int_math.h" -/* Returns: the quotient of (a + ib) / (c + id) */ +// Returns: the quotient of (a + ib) / (c + id) COMPILER_RT_ABI Dcomplex __divdc3(double __a, double __b, double __c, double __d) { diff --git a/lib/builtins/divdi3.c b/lib/builtins/divdi3.c index 0639c3840..ee08d6557 100644 --- a/lib/builtins/divdi3.c +++ b/lib/builtins/divdi3.c @@ -1,27 +1,25 @@ -/* ===-- divdi3.c - Implement __divdi3 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __divdi3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- divdi3.c - Implement __divdi3 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __divdi3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a / b */ +// Returns: a / b COMPILER_RT_ABI di_int __divdi3(di_int a, di_int b) { const int bits_in_dword_m1 = (int)(sizeof(di_int) * CHAR_BIT) - 1; - di_int s_a = a >> bits_in_dword_m1; /* s_a = a < 0 ? -1 : 0 */ - di_int s_b = b >> bits_in_dword_m1; /* s_b = b < 0 ? -1 : 0 */ - a = (a ^ s_a) - s_a; /* negate if s_a == -1 */ - b = (b ^ s_b) - s_b; /* negate if s_b == -1 */ - s_a ^= s_b; /*sign of quotient */ - return (__udivmoddi4(a, b, (du_int *)0) ^ s_a) - - s_a; /* negate if s_a == -1 */ + di_int s_a = a >> bits_in_dword_m1; // s_a = a < 0 ? -1 : 0 + di_int s_b = b >> bits_in_dword_m1; // s_b = b < 0 ? -1 : 0 + a = (a ^ s_a) - s_a; // negate if s_a == -1 + b = (b ^ s_b) - s_b; // negate if s_b == -1 + s_a ^= s_b; // sign of quotient + return (__udivmoddi4(a, b, (du_int *)0) ^ s_a) - s_a; // negate if s_a == -1 } diff --git a/lib/builtins/divmoddi4.c b/lib/builtins/divmoddi4.c index a7139e38e..7f333510c 100644 --- a/lib/builtins/divmoddi4.c +++ b/lib/builtins/divmoddi4.c @@ -1,19 +1,18 @@ -/*===-- divmoddi4.c - Implement __divmoddi4 --------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __divmoddi4 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- divmoddi4.c - Implement __divmoddi4 -------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __divmoddi4 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a / b, *rem = a % b */ +// Returns: a / b, *rem = a % b COMPILER_RT_ABI di_int __divmoddi4(di_int a, di_int b, di_int *rem) { di_int d = __divdi3(a, b); diff --git a/lib/builtins/divmodsi4.c b/lib/builtins/divmodsi4.c index 4c1d456c9..402eed22f 100644 --- a/lib/builtins/divmodsi4.c +++ b/lib/builtins/divmodsi4.c @@ -1,19 +1,19 @@ -/*===-- divmodsi4.c - Implement __divmodsi4 --------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __divmodsi4 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- divmodsi4.c - Implement __divmodsi4 +//--------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __divmodsi4 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a / b, *rem = a % b */ +// Returns: a / b, *rem = a % b COMPILER_RT_ABI si_int __divmodsi4(si_int a, si_int b, si_int *rem) { si_int d = __divsi3(a, b); diff --git a/lib/builtins/divsc3.c b/lib/builtins/divsc3.c index b4b57eaa3..1a63634dd 100644 --- a/lib/builtins/divsc3.c +++ b/lib/builtins/divsc3.c @@ -1,22 +1,21 @@ -/*===-- divsc3.c - Implement __divsc3 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __divsc3 for the compiler_rt library. - * - *===----------------------------------------------------------------------=== - */ +//===-- divsc3.c - Implement __divsc3 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __divsc3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #define SINGLE_PRECISION #include "fp_lib.h" #include "int_lib.h" #include "int_math.h" -/* Returns: the quotient of (a + ib) / (c + id) */ +// Returns: the quotient of (a + ib) / (c + id) COMPILER_RT_ABI Fcomplex __divsc3(float __a, float __b, float __c, float __d) { int __ilogbw = 0; diff --git a/lib/builtins/divsi3.c b/lib/builtins/divsi3.c index 775cdccf9..754d10362 100644 --- a/lib/builtins/divsi3.c +++ b/lib/builtins/divsi3.c @@ -1,34 +1,33 @@ -/* ===-- divsi3.c - Implement __divsi3 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __divsi3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- divsi3.c - Implement __divsi3 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __divsi3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a / b */ +// Returns: a / b COMPILER_RT_ABI si_int __divsi3(si_int a, si_int b) { const int bits_in_word_m1 = (int)(sizeof(si_int) * CHAR_BIT) - 1; - si_int s_a = a >> bits_in_word_m1; /* s_a = a < 0 ? -1 : 0 */ - si_int s_b = b >> bits_in_word_m1; /* s_b = b < 0 ? -1 : 0 */ - a = (a ^ s_a) - s_a; /* negate if s_a == -1 */ - b = (b ^ s_b) - s_b; /* negate if s_b == -1 */ - s_a ^= s_b; /* sign of quotient */ - /* - * On CPUs without unsigned hardware division support, - * this calls __udivsi3 (notice the cast to su_int). - * On CPUs with unsigned hardware division support, - * this uses the unsigned division instruction. - */ - return ((su_int)a / (su_int)b ^ s_a) - s_a; /* negate if s_a == -1 */ + si_int s_a = a >> bits_in_word_m1; // s_a = a < 0 ? -1 : 0 + si_int s_b = b >> bits_in_word_m1; // s_b = b < 0 ? -1 : 0 + a = (a ^ s_a) - s_a; // negate if s_a == -1 + b = (b ^ s_b) - s_b; // negate if s_b == -1 + s_a ^= s_b; // sign of quotient + // + // On CPUs without unsigned hardware division support, + // this calls __udivsi3 (notice the cast to su_int). + // On CPUs with unsigned hardware division support, + // this uses the unsigned division instruction. + // + return ((su_int)a / (su_int)b ^ s_a) - s_a; // negate if s_a == -1 } #if defined(__ARM_EABI__) diff --git a/lib/builtins/divtc3.c b/lib/builtins/divtc3.c index 9aa7a84ab..37c71400e 100644 --- a/lib/builtins/divtc3.c +++ b/lib/builtins/divtc3.c @@ -1,22 +1,21 @@ -/*===-- divtc3.c - Implement __divtc3 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __divtc3 for the compiler_rt library. - * - *===----------------------------------------------------------------------=== - */ +//===-- divtc3.c - Implement __divtc3 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __divtc3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #define QUAD_PRECISION #include "fp_lib.h" #include "int_lib.h" #include "int_math.h" -/* Returns: the quotient of (a + ib) / (c + id) */ +// Returns: the quotient of (a + ib) / (c + id) COMPILER_RT_ABI Lcomplex __divtc3(long double __a, long double __b, long double __c, long double __d) { diff --git a/lib/builtins/divti3.c b/lib/builtins/divti3.c index 59786fa6e..6d007fe34 100644 --- a/lib/builtins/divti3.c +++ b/lib/builtins/divti3.c @@ -1,31 +1,29 @@ -/* ===-- divti3.c - Implement __divti3 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __divti3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- divti3.c - Implement __divti3 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __divti3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: a / b */ +// Returns: a / b COMPILER_RT_ABI ti_int __divti3(ti_int a, ti_int b) { const int bits_in_tword_m1 = (int)(sizeof(ti_int) * CHAR_BIT) - 1; - ti_int s_a = a >> bits_in_tword_m1; /* s_a = a < 0 ? -1 : 0 */ - ti_int s_b = b >> bits_in_tword_m1; /* s_b = b < 0 ? -1 : 0 */ - a = (a ^ s_a) - s_a; /* negate if s_a == -1 */ - b = (b ^ s_b) - s_b; /* negate if s_b == -1 */ - s_a ^= s_b; /* sign of quotient */ - return (__udivmodti4(a, b, (tu_int *)0) ^ s_a) - - s_a; /* negate if s_a == -1 */ + ti_int s_a = a >> bits_in_tword_m1; // s_a = a < 0 ? -1 : 0 + ti_int s_b = b >> bits_in_tword_m1; // s_b = b < 0 ? -1 : 0 + a = (a ^ s_a) - s_a; // negate if s_a == -1 + b = (b ^ s_b) - s_b; // negate if s_b == -1 + s_a ^= s_b; // sign of quotient + return (__udivmodti4(a, b, (tu_int *)0) ^ s_a) - s_a; // negate if s_a == -1 } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/divxc3.c b/lib/builtins/divxc3.c index 522f817a0..97ffd2eac 100644 --- a/lib/builtins/divxc3.c +++ b/lib/builtins/divxc3.c @@ -1,21 +1,21 @@ -/* ===-- divxc3.c - Implement __divxc3 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __divxc3 for the compiler_rt library. - * - */ +//===-- divxc3.c - Implement __divxc3 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __divxc3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #if !_ARCH_PPC #include "int_lib.h" #include "int_math.h" -/* Returns: the quotient of (a + ib) / (c + id) */ +// Returns: the quotient of (a + ib) / (c + id) COMPILER_RT_ABI Lcomplex __divxc3(long double __a, long double __b, long double __c, long double __d) { diff --git a/lib/builtins/emutls.c b/lib/builtins/emutls.c index 3cee97f2c..da58feb7b 100644 --- a/lib/builtins/emutls.c +++ b/lib/builtins/emutls.c @@ -1,11 +1,11 @@ -/* ===---------- emutls.c - Implements __emutls_get_address ---------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===---------- emutls.c - Implements __emutls_get_address ---------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + #include <stdint.h> #include <stdlib.h> #include <string.h> @@ -13,14 +13,14 @@ #include "int_lib.h" #ifdef __BIONIC__ -/* There are 4 pthread key cleanup rounds on Bionic. Delay emutls deallocation - to round 2. We need to delay deallocation because: - - Android versions older than M lack __cxa_thread_atexit_impl, so apps - use a pthread key destructor to call C++ destructors. - - Apps might use __thread/thread_local variables in pthread destructors. - We can't wait until the final two rounds, because jemalloc needs two rounds - after the final malloc/free call to free its thread-specific data (see - https://reviews.llvm.org/D46978#1107507). */ +// There are 4 pthread key cleanup rounds on Bionic. Delay emutls deallocation +// to round 2. We need to delay deallocation because: +// - Android versions older than M lack __cxa_thread_atexit_impl, so apps +// use a pthread key destructor to call C++ destructors. +// - Apps might use __thread/thread_local variables in pthread destructors. +// We can't wait until the final two rounds, because jemalloc needs two rounds +// after the final malloc/free call to free its thread-specific data (see +// https://reviews.llvm.org/D46978#1107507). #define EMUTLS_SKIP_DESTRUCTOR_ROUNDS 1 #else #define EMUTLS_SKIP_DESTRUCTOR_ROUNDS 0 @@ -28,7 +28,7 @@ typedef struct emutls_address_array { uintptr_t skip_destructor_rounds; - uintptr_t size; /* number of elements in the 'data' array */ + uintptr_t size; // number of elements in the 'data' array void *data[]; } emutls_address_array; @@ -45,9 +45,8 @@ static bool emutls_key_created = false; typedef unsigned int gcc_word __attribute__((mode(word))); typedef unsigned int gcc_pointer __attribute__((mode(pointer))); -/* Default is not to use posix_memalign, so systems like Android - * can use thread local data without heavier POSIX memory allocators. - */ +// Default is not to use posix_memalign, so systems like Android +// can use thread local data without heavier POSIX memory allocators. #ifndef EMUTLS_USE_POSIX_MEMALIGN #define EMUTLS_USE_POSIX_MEMALIGN 0 #endif @@ -74,7 +73,7 @@ static __inline void emutls_memalign_free(void *base) { #if EMUTLS_USE_POSIX_MEMALIGN free(base); #else - /* The mallocated address is in ((void**)base)[-1] */ + // The mallocated address is in ((void**)base)[-1] free(((void **)base)[-1]); #endif } @@ -90,13 +89,12 @@ static __inline emutls_address_array *emutls_getspecific() { static void emutls_key_destructor(void *ptr) { emutls_address_array *array = (emutls_address_array *)ptr; if (array->skip_destructor_rounds > 0) { - /* emutls is deallocated using a pthread key destructor. These - * destructors are called in several rounds to accommodate destructor - * functions that (re)initialize key values with pthread_setspecific. - * Delay the emutls deallocation to accommodate other end-of-thread - * cleanup tasks like calling thread_local destructors (e.g. the - * __cxa_thread_atexit fallback in libc++abi). - */ + // emutls is deallocated using a pthread key destructor. These + // destructors are called in several rounds to accommodate destructor + // functions that (re)initialize key values with pthread_setspecific. + // Delay the emutls deallocation to accommodate other end-of-thread + // cleanup tasks like calling thread_local destructors (e.g. the + // __cxa_thread_atexit fallback in libc++abi). array->skip_destructor_rounds--; emutls_setspecific(array); } else { @@ -120,7 +118,7 @@ static __inline void emutls_lock() { pthread_mutex_lock(&emutls_mutex); } static __inline void emutls_unlock() { pthread_mutex_unlock(&emutls_mutex); } -#else /* _WIN32 */ +#else // _WIN32 #include <assert.h> #include <malloc.h> @@ -218,8 +216,7 @@ static __inline emutls_address_array *emutls_getspecific() { return (emutls_address_array *)value; } -/* Provide atomic load/store functions for emutls_get_index if built with MSVC. - */ +// Provide atomic load/store functions for emutls_get_index if built with MSVC. #if !defined(__ATOMIC_RELEASE) #include <intrin.h> @@ -241,16 +238,15 @@ static __inline void __atomic_store_n(void *ptr, uintptr_t val, unsigned type) { InterlockedExchangePointer((void *volatile *)ptr, (void *)val); } -#endif /* __ATOMIC_RELEASE */ +#endif // __ATOMIC_RELEASE #pragma warning(pop) -#endif /* _WIN32 */ +#endif // _WIN32 -static size_t emutls_num_object = 0; /* number of allocated TLS objects */ +static size_t emutls_num_object = 0; // number of allocated TLS objects -/* Free the allocated TLS data - */ +// Free the allocated TLS data static void emutls_shutdown(emutls_address_array *array) { if (array) { uintptr_t i; @@ -261,28 +257,27 @@ static void emutls_shutdown(emutls_address_array *array) { } } -/* For every TLS variable xyz, - * there is one __emutls_control variable named __emutls_v.xyz. - * If xyz has non-zero initial value, __emutls_v.xyz's "value" - * will point to __emutls_t.xyz, which has the initial value. - */ +// For every TLS variable xyz, +// there is one __emutls_control variable named __emutls_v.xyz. +// If xyz has non-zero initial value, __emutls_v.xyz's "value" +// will point to __emutls_t.xyz, which has the initial value. typedef struct __emutls_control { - /* Must use gcc_word here, instead of size_t, to match GCC. When - gcc_word is larger than size_t, the upper extra bits are all - zeros. We can use variables of size_t to operate on size and - align. */ - gcc_word size; /* size of the object in bytes */ - gcc_word align; /* alignment of the object in bytes */ + // Must use gcc_word here, instead of size_t, to match GCC. When + // gcc_word is larger than size_t, the upper extra bits are all + // zeros. We can use variables of size_t to operate on size and + // align. + gcc_word size; // size of the object in bytes + gcc_word align; // alignment of the object in bytes union { - uintptr_t index; /* data[index-1] is the object address */ - void *address; /* object address, when in single thread env */ + uintptr_t index; // data[index-1] is the object address + void *address; // object address, when in single thread env } object; - void *value; /* null or non-zero initial value for the object */ + void *value; // null or non-zero initial value for the object } __emutls_control; -/* Emulated TLS objects are always allocated at run-time. */ +// Emulated TLS objects are always allocated at run-time. static __inline void *emutls_allocate_object(__emutls_control *control) { - /* Use standard C types, check with gcc's emutls.o. */ + // Use standard C types, check with gcc's emutls.o. COMPILE_TIME_ASSERT(sizeof(uintptr_t) == sizeof(gcc_pointer)); COMPILE_TIME_ASSERT(sizeof(uintptr_t) == sizeof(void *)); @@ -291,7 +286,7 @@ static __inline void *emutls_allocate_object(__emutls_control *control) { void *base; if (align < sizeof(void *)) align = sizeof(void *); - /* Make sure that align is power of 2. */ + // Make sure that align is power of 2. if ((align & (align - 1)) != 0) abort(); @@ -303,7 +298,7 @@ static __inline void *emutls_allocate_object(__emutls_control *control) { return base; } -/* Returns control->object.index; set index if not allocated yet. */ +// Returns control->object.index; set index if not allocated yet. static __inline uintptr_t emutls_get_index(__emutls_control *control) { uintptr_t index = __atomic_load_n(&control->object.index, __ATOMIC_ACQUIRE); if (!index) { @@ -319,7 +314,7 @@ static __inline uintptr_t emutls_get_index(__emutls_control *control) { return index; } -/* Updates newly allocated thread local emutls_address_array. */ +// Updates newly allocated thread local emutls_address_array. static __inline void emutls_check_array_set_size(emutls_address_array *array, uintptr_t size) { if (array == NULL) @@ -328,28 +323,24 @@ static __inline void emutls_check_array_set_size(emutls_address_array *array, emutls_setspecific(array); } -/* Returns the new 'data' array size, number of elements, - * which must be no smaller than the given index. - */ +// Returns the new 'data' array size, number of elements, +// which must be no smaller than the given index. static __inline uintptr_t emutls_new_data_array_size(uintptr_t index) { - /* Need to allocate emutls_address_array with extra slots - * to store the header. - * Round up the emutls_address_array size to multiple of 16. - */ + // Need to allocate emutls_address_array with extra slots + // to store the header. + // Round up the emutls_address_array size to multiple of 16. uintptr_t header_words = sizeof(emutls_address_array) / sizeof(void *); return ((index + header_words + 15) & ~((uintptr_t)15)) - header_words; } -/* Returns the size in bytes required for an emutls_address_array with - * N number of elements for data field. - */ +// Returns the size in bytes required for an emutls_address_array with +// N number of elements for data field. static __inline uintptr_t emutls_asize(uintptr_t N) { return N * sizeof(void *) + sizeof(emutls_address_array); } -/* Returns the thread local emutls_address_array. - * Extends its size if necessary to hold address at index. - */ +// Returns the thread local emutls_address_array. +// Extends its size if necessary to hold address at index. static __inline emutls_address_array * emutls_get_address_array(uintptr_t index) { emutls_address_array *array = emutls_getspecific(); @@ -382,7 +373,7 @@ void *__emutls_get_address(__emutls_control *control) { } #ifdef __BIONIC__ -/* Called by Bionic on dlclose to delete the emutls pthread key. */ +// Called by Bionic on dlclose to delete the emutls pthread key. __attribute__((visibility("hidden"))) void __emutls_unregister_key(void) { if (emutls_key_created) { pthread_key_delete(emutls_pthread_key); diff --git a/lib/builtins/enable_execute_stack.c b/lib/builtins/enable_execute_stack.c index d1ad90bf9..e18de4eae 100644 --- a/lib/builtins/enable_execute_stack.c +++ b/lib/builtins/enable_execute_stack.c @@ -1,11 +1,10 @@ -/* ===-- enable_execute_stack.c - Implement __enable_execute_stack ---------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- enable_execute_stack.c - Implement __enable_execute_stack ---------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #include "int_lib.h" @@ -13,10 +12,9 @@ #include <sys/mman.h> #endif -/* #include "config.h" - * FIXME: CMake - include when cmake system is ready. - * Remove #define HAVE_SYSCONF 1 line. - */ +// #include "config.h" +// FIXME: CMake - include when cmake system is ready. +// Remove #define HAVE_SYSCONF 1 line. #define HAVE_SYSCONF 1 #ifdef _WIN32 @@ -25,8 +23,8 @@ #else #ifndef __APPLE__ #include <unistd.h> -#endif /* __APPLE__ */ -#endif /* _WIN32 */ +#endif // __APPLE__ +#endif // _WIN32 #if __LP64__ #define TRAMPOLINE_SIZE 48 @@ -34,32 +32,29 @@ #define TRAMPOLINE_SIZE 40 #endif -/* - * The compiler generates calls to __enable_execute_stack() when creating - * trampoline functions on the stack for use with nested functions. - * It is expected to mark the page(s) containing the address - * and the next 48 bytes as executable. Since the stack is normally rw- - * that means changing the protection on those page(s) to rwx. - */ +// The compiler generates calls to __enable_execute_stack() when creating +// trampoline functions on the stack for use with nested functions. +// It is expected to mark the page(s) containing the address +// and the next 48 bytes as executable. Since the stack is normally rw- +// that means changing the protection on those page(s) to rwx. COMPILER_RT_ABI void __enable_execute_stack(void *addr) { #if _WIN32 MEMORY_BASIC_INFORMATION mbi; if (!VirtualQuery(addr, &mbi, sizeof(mbi))) - return; /* We should probably assert here because there is no return value - */ + return; // We should probably assert here because there is no return value VirtualProtect(mbi.BaseAddress, mbi.RegionSize, PAGE_EXECUTE_READWRITE, &mbi.Protect); #else #if __APPLE__ - /* On Darwin, pagesize is always 4096 bytes */ + // On Darwin, pagesize is always 4096 bytes const uintptr_t pageSize = 4096; #elif !defined(HAVE_SYSCONF) #error "HAVE_SYSCONF not defined! See enable_execute_stack.c" #else const uintptr_t pageSize = sysconf(_SC_PAGESIZE); -#endif /* __APPLE__ */ +#endif // __APPLE__ const uintptr_t pageAlignMask = ~(pageSize - 1); uintptr_t p = (uintptr_t)addr; diff --git a/lib/builtins/eprintf.c b/lib/builtins/eprintf.c index 50cbd6520..89fb0e315 100644 --- a/lib/builtins/eprintf.c +++ b/lib/builtins/eprintf.c @@ -1,23 +1,20 @@ -/* ===---------- eprintf.c - Implements __eprintf --------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===---------- eprintf.c - Implements __eprintf --------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #include <stdio.h> -/* - * __eprintf() was used in an old version of <assert.h>. - * It can eventually go away, but it is needed when linking - * .o files built with the old <assert.h>. - * - * It should never be exported from a dylib, so it is marked - * visibility hidden. - */ +// __eprintf() was used in an old version of <assert.h>. +// It can eventually go away, but it is needed when linking +// .o files built with the old <assert.h>. +// +// It should never be exported from a dylib, so it is marked +// visibility hidden. #ifndef _WIN32 __attribute__((visibility("hidden"))) #endif diff --git a/lib/builtins/extenddftf2.c b/lib/builtins/extenddftf2.c index ff9bb08d8..849a39da1 100644 --- a/lib/builtins/extenddftf2.c +++ b/lib/builtins/extenddftf2.c @@ -5,7 +5,6 @@ // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// -// #define QUAD_PRECISION #include "fp_lib.h" diff --git a/lib/builtins/extendhfsf2.c b/lib/builtins/extendhfsf2.c index d2892cf3f..6d1630e90 100644 --- a/lib/builtins/extendhfsf2.c +++ b/lib/builtins/extendhfsf2.c @@ -5,7 +5,6 @@ // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// -// #define SRC_HALF #define DST_SINGLE diff --git a/lib/builtins/extendsfdf2.c b/lib/builtins/extendsfdf2.c index a6a957d2f..54843d181 100644 --- a/lib/builtins/extendsfdf2.c +++ b/lib/builtins/extendsfdf2.c @@ -5,7 +5,6 @@ // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// -// #define SRC_SINGLE #define DST_DOUBLE diff --git a/lib/builtins/extendsftf2.c b/lib/builtins/extendsftf2.c index 4082e9ecc..c6368406d 100644 --- a/lib/builtins/extendsftf2.c +++ b/lib/builtins/extendsftf2.c @@ -5,7 +5,6 @@ // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// -// #define QUAD_PRECISION #include "fp_lib.h" diff --git a/lib/builtins/ffsdi2.c b/lib/builtins/ffsdi2.c index 320703a27..9c1a24260 100644 --- a/lib/builtins/ffsdi2.c +++ b/lib/builtins/ffsdi2.c @@ -1,21 +1,19 @@ -/* ===-- ffsdi2.c - Implement __ffsdi2 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __ffsdi2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- ffsdi2.c - Implement __ffsdi2 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __ffsdi2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: the index of the least significant 1-bit in a, or - * the value zero if a is zero. The least significant bit is index one. - */ +// Returns: the index of the least significant 1-bit in a, or +// the value zero if a is zero. The least significant bit is index one. COMPILER_RT_ABI si_int __ffsdi2(di_int a) { dwords x; diff --git a/lib/builtins/ffssi2.c b/lib/builtins/ffssi2.c index 0b3449abc..cba1f72fd 100644 --- a/lib/builtins/ffssi2.c +++ b/lib/builtins/ffssi2.c @@ -1,21 +1,19 @@ -/* ===-- ffssi2.c - Implement __ffssi2 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __ffssi2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- ffssi2.c - Implement __ffssi2 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __ffssi2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: the index of the least significant 1-bit in a, or - * the value zero if a is zero. The least significant bit is index one. - */ +// Returns: the index of the least significant 1-bit in a, or +// the value zero if a is zero. The least significant bit is index one. COMPILER_RT_ABI si_int __ffssi2(si_int a) { if (a == 0) { diff --git a/lib/builtins/ffsti2.c b/lib/builtins/ffsti2.c index 41e668016..a2d7ce08a 100644 --- a/lib/builtins/ffsti2.c +++ b/lib/builtins/ffsti2.c @@ -1,23 +1,21 @@ -/* ===-- ffsti2.c - Implement __ffsti2 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __ffsti2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- ffsti2.c - Implement __ffsti2 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __ffsti2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: the index of the least significant 1-bit in a, or - * the value zero if a is zero. The least significant bit is index one. - */ +// Returns: the index of the least significant 1-bit in a, or +// the value zero if a is zero. The least significant bit is index one. COMPILER_RT_ABI si_int __ffsti2(ti_int a) { twords x; @@ -30,4 +28,4 @@ COMPILER_RT_ABI si_int __ffsti2(ti_int a) { return __builtin_ctzll(x.s.low) + 1; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/fixdfdi.c b/lib/builtins/fixdfdi.c index 75ae88a1a..59c5abb61 100644 --- a/lib/builtins/fixdfdi.c +++ b/lib/builtins/fixdfdi.c @@ -1,19 +1,17 @@ -/* ===-- fixdfdi.c - Implement __fixdfdi -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixdfdi.c - Implement __fixdfdi -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #define DOUBLE_PRECISION #include "fp_lib.h" #ifndef __SOFT_FP__ -/* Support for systems that have hardware floating-point; can set the invalid - * flag as a side-effect of computation. - */ +// Support for systems that have hardware floating-point; can set the invalid +// flag as a side-effect of computation. COMPILER_RT_ABI du_int __fixunsdfdi(double a); @@ -25,10 +23,9 @@ COMPILER_RT_ABI di_int __fixdfdi(double a) { } #else -/* Support for systems that don't have hardware floating-point; there are no - * flags to set, and we don't want to code-gen to an unknown soft-float - * implementation. - */ +// Support for systems that don't have hardware floating-point; there are no +// flags to set, and we don't want to code-gen to an unknown soft-float +// implementation. typedef di_int fixint_t; typedef du_int fixuint_t; diff --git a/lib/builtins/fixdfsi.c b/lib/builtins/fixdfsi.c index c2acf79c5..836e796e5 100644 --- a/lib/builtins/fixdfsi.c +++ b/lib/builtins/fixdfsi.c @@ -1,11 +1,10 @@ -/* ===-- fixdfsi.c - Implement __fixdfsi -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixdfsi.c - Implement __fixdfsi -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #define DOUBLE_PRECISION #include "fp_lib.h" diff --git a/lib/builtins/fixdfti.c b/lib/builtins/fixdfti.c index fa4cf3519..90ca8959d 100644 --- a/lib/builtins/fixdfti.c +++ b/lib/builtins/fixdfti.c @@ -1,11 +1,10 @@ -/* ===-- fixdfti.c - Implement __fixdfti -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixdfti.c - Implement __fixdfti -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #include "int_lib.h" @@ -19,4 +18,4 @@ typedef tu_int fixuint_t; COMPILER_RT_ABI ti_int __fixdfti(fp_t a) { return __fixint(a); } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/fixsfdi.c b/lib/builtins/fixsfdi.c index 0b6cc19b7..99f99de99 100644 --- a/lib/builtins/fixsfdi.c +++ b/lib/builtins/fixsfdi.c @@ -1,19 +1,17 @@ -/* ===-- fixsfdi.c - Implement __fixsfdi -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixsfdi.c - Implement __fixsfdi -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #define SINGLE_PRECISION #include "fp_lib.h" #ifndef __SOFT_FP__ -/* Support for systems that have hardware floating-point; can set the invalid - * flag as a side-effect of computation. - */ +// Support for systems that have hardware floating-point; can set the invalid +// flag as a side-effect of computation. COMPILER_RT_ABI du_int __fixunssfdi(float a); @@ -25,10 +23,9 @@ COMPILER_RT_ABI di_int __fixsfdi(float a) { } #else -/* Support for systems that don't have hardware floating-point; there are no - * flags to set, and we don't want to code-gen to an unknown soft-float - * implementation. - */ +// Support for systems that don't have hardware floating-point; there are no +// flags to set, and we don't want to code-gen to an unknown soft-float +// implementation. typedef di_int fixint_t; typedef du_int fixuint_t; diff --git a/lib/builtins/fixsfsi.c b/lib/builtins/fixsfsi.c index 6d36d9699..8b0d54f6d 100644 --- a/lib/builtins/fixsfsi.c +++ b/lib/builtins/fixsfsi.c @@ -1,11 +1,10 @@ -/* ===-- fixsfsi.c - Implement __fixsfsi -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixsfsi.c - Implement __fixsfsi -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #define SINGLE_PRECISION #include "fp_lib.h" diff --git a/lib/builtins/fixsfti.c b/lib/builtins/fixsfti.c index 4c7ddffef..3c01b75e2 100644 --- a/lib/builtins/fixsfti.c +++ b/lib/builtins/fixsfti.c @@ -1,11 +1,10 @@ -/* ===-- fixsfti.c - Implement __fixsfti -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixsfti.c - Implement __fixsfti -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #include "int_lib.h" @@ -19,4 +18,4 @@ typedef tu_int fixuint_t; COMPILER_RT_ABI ti_int __fixsfti(fp_t a) { return __fixint(a); } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/fixtfdi.c b/lib/builtins/fixtfdi.c index 50e4bbf66..fe570e6b3 100644 --- a/lib/builtins/fixtfdi.c +++ b/lib/builtins/fixtfdi.c @@ -1,11 +1,10 @@ -/* ===-- fixtfdi.c - Implement __fixtfdi -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixtfdi.c - Implement __fixtfdi -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #define QUAD_PRECISION #include "fp_lib.h" diff --git a/lib/builtins/fixtfsi.c b/lib/builtins/fixtfsi.c index 0dadf1b38..a32bd964c 100644 --- a/lib/builtins/fixtfsi.c +++ b/lib/builtins/fixtfsi.c @@ -1,11 +1,10 @@ -/* ===-- fixtfsi.c - Implement __fixtfsi -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixtfsi.c - Implement __fixtfsi -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #define QUAD_PRECISION #include "fp_lib.h" diff --git a/lib/builtins/fixtfti.c b/lib/builtins/fixtfti.c index 3102f1290..19f84ce38 100644 --- a/lib/builtins/fixtfti.c +++ b/lib/builtins/fixtfti.c @@ -1,11 +1,10 @@ -/* ===-- fixtfti.c - Implement __fixtfti -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixtfti.c - Implement __fixtfti -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #define QUAD_PRECISION #include "fp_lib.h" diff --git a/lib/builtins/fixunsdfdi.c b/lib/builtins/fixunsdfdi.c index 6d4bc1f74..debcd6ef4 100644 --- a/lib/builtins/fixunsdfdi.c +++ b/lib/builtins/fixunsdfdi.c @@ -1,33 +1,30 @@ -/* ===-- fixunsdfdi.c - Implement __fixunsdfdi -----------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixunsdfdi.c - Implement __fixunsdfdi -----------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #define DOUBLE_PRECISION #include "fp_lib.h" #ifndef __SOFT_FP__ -/* Support for systems that have hardware floating-point; can set the invalid - * flag as a side-effect of computation. - */ +// Support for systems that have hardware floating-point; can set the invalid +// flag as a side-effect of computation. COMPILER_RT_ABI du_int __fixunsdfdi(double a) { if (a <= 0.0) return 0; - su_int high = a / 4294967296.f; /* a / 0x1p32f; */ - su_int low = a - (double)high * 4294967296.f; /* high * 0x1p32f; */ + su_int high = a / 4294967296.f; // a / 0x1p32f; + su_int low = a - (double)high * 4294967296.f; // high * 0x1p32f; return ((du_int)high << 32) | low; } #else -/* Support for systems that don't have hardware floating-point; there are no - * flags to set, and we don't want to code-gen to an unknown soft-float - * implementation. - */ +// Support for systems that don't have hardware floating-point; there are no +// flags to set, and we don't want to code-gen to an unknown soft-float +// implementation. typedef du_int fixuint_t; #include "fp_fixuint_impl.inc" diff --git a/lib/builtins/fixunsdfsi.c b/lib/builtins/fixunsdfsi.c index 5c18a707f..a9430d8e2 100644 --- a/lib/builtins/fixunsdfsi.c +++ b/lib/builtins/fixunsdfsi.c @@ -1,11 +1,10 @@ -/* ===-- fixunsdfsi.c - Implement __fixunsdfsi -----------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixunsdfsi.c - Implement __fixunsdfsi -----------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #define DOUBLE_PRECISION #include "fp_lib.h" diff --git a/lib/builtins/fixunsdfti.c b/lib/builtins/fixunsdfti.c index 8521617f4..be497d0e1 100644 --- a/lib/builtins/fixunsdfti.c +++ b/lib/builtins/fixunsdfti.c @@ -1,11 +1,10 @@ -/* ===-- fixunsdfti.c - Implement __fixunsdfti -----------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixunsdfti.c - Implement __fixunsdfti -----------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #include "int_lib.h" @@ -16,4 +15,4 @@ typedef tu_int fixuint_t; #include "fp_fixuint_impl.inc" COMPILER_RT_ABI tu_int __fixunsdfti(fp_t a) { return __fixuint(a); } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/fixunssfdi.c b/lib/builtins/fixunssfdi.c index 7661a9bd5..589c40769 100644 --- a/lib/builtins/fixunssfdi.c +++ b/lib/builtins/fixunssfdi.c @@ -1,34 +1,31 @@ -/* ===-- fixunssfdi.c - Implement __fixunssfdi -----------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixunssfdi.c - Implement __fixunssfdi -----------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #define SINGLE_PRECISION #include "fp_lib.h" #ifndef __SOFT_FP__ -/* Support for systems that have hardware floating-point; can set the invalid - * flag as a side-effect of computation. - */ +// Support for systems that have hardware floating-point; can set the invalid +// flag as a side-effect of computation. COMPILER_RT_ABI du_int __fixunssfdi(float a) { if (a <= 0.0f) return 0; double da = a; - su_int high = da / 4294967296.f; /* da / 0x1p32f; */ - su_int low = da - (double)high * 4294967296.f; /* high * 0x1p32f; */ + su_int high = da / 4294967296.f; // da / 0x1p32f; + su_int low = da - (double)high * 4294967296.f; // high * 0x1p32f; return ((du_int)high << 32) | low; } #else -/* Support for systems that don't have hardware floating-point; there are no - * flags to set, and we don't want to code-gen to an unknown soft-float - * implementation. - */ +// Support for systems that don't have hardware floating-point; there are no +// flags to set, and we don't want to code-gen to an unknown soft-float +// implementation. typedef du_int fixuint_t; #include "fp_fixuint_impl.inc" diff --git a/lib/builtins/fixunssfsi.c b/lib/builtins/fixunssfsi.c index cca6573e2..2ce7d40ed 100644 --- a/lib/builtins/fixunssfsi.c +++ b/lib/builtins/fixunssfsi.c @@ -1,15 +1,14 @@ -/* ===-- fixunssfsi.c - Implement __fixunssfsi -----------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __fixunssfsi for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixunssfsi.c - Implement __fixunssfsi -----------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __fixunssfsi for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #define SINGLE_PRECISION #include "fp_lib.h" diff --git a/lib/builtins/fixunssfti.c b/lib/builtins/fixunssfti.c index 58f5919fe..5525d77f2 100644 --- a/lib/builtins/fixunssfti.c +++ b/lib/builtins/fixunssfti.c @@ -1,15 +1,14 @@ -/* ===-- fixunssfti.c - Implement __fixunssfti -----------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __fixunssfti for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixunssfti.c - Implement __fixunssfti -----------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __fixunssfti for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #define SINGLE_PRECISION #include "fp_lib.h" diff --git a/lib/builtins/fixunstfdi.c b/lib/builtins/fixunstfdi.c index 25e1f3873..a0805e63d 100644 --- a/lib/builtins/fixunstfdi.c +++ b/lib/builtins/fixunstfdi.c @@ -1,11 +1,10 @@ -/* ===-- fixunstfdi.c - Implement __fixunstfdi -----------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixunstfdi.c - Implement __fixunstfdi -----------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #define QUAD_PRECISION #include "fp_lib.h" diff --git a/lib/builtins/fixunstfsi.c b/lib/builtins/fixunstfsi.c index 522ccbc6f..3a1320ed3 100644 --- a/lib/builtins/fixunstfsi.c +++ b/lib/builtins/fixunstfsi.c @@ -1,11 +1,10 @@ -/* ===-- fixunstfsi.c - Implement __fixunstfsi -----------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixunstfsi.c - Implement __fixunstfsi -----------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #define QUAD_PRECISION #include "fp_lib.h" diff --git a/lib/builtins/fixunstfti.c b/lib/builtins/fixunstfti.c index 4292c4c57..23cd1ab61 100644 --- a/lib/builtins/fixunstfti.c +++ b/lib/builtins/fixunstfti.c @@ -1,11 +1,10 @@ -/* ===-- fixunstfsi.c - Implement __fixunstfsi -----------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixunstfsi.c - Implement __fixunstfsi -----------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #define QUAD_PRECISION #include "fp_lib.h" diff --git a/lib/builtins/fixunsxfdi.c b/lib/builtins/fixunsxfdi.c index cb735780b..75c4f0937 100644 --- a/lib/builtins/fixunsxfdi.c +++ b/lib/builtins/fixunsxfdi.c @@ -1,33 +1,29 @@ -/* ===-- fixunsxfdi.c - Implement __fixunsxfdi -----------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __fixunsxfdi for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixunsxfdi.c - Implement __fixunsxfdi -----------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __fixunsxfdi for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #if !_ARCH_PPC #include "int_lib.h" -/* Returns: convert a to a unsigned long long, rounding toward zero. - * Negative values all become zero. - */ +// Returns: convert a to a unsigned long long, rounding toward zero. +// Negative values all become zero. -/* Assumption: long double is an intel 80 bit floating point type padded with 6 - * bytes du_int is a 64 bit integral type value in long double is representable - * in du_int or is negative (no range checking performed) - */ +// Assumption: long double is an intel 80 bit floating point type padded with 6 +// bytes du_int is a 64 bit integral type value in long double is representable +// in du_int or is negative (no range checking performed) -/* gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee - * eeee | 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm - * mmmm mmmm mmmm - */ +// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee +// eeee | 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm +// mmmm mmmm mmmm COMPILER_RT_ABI du_int __fixunsxfdi(long double a) { long_double_bits fb; diff --git a/lib/builtins/fixunsxfsi.c b/lib/builtins/fixunsxfsi.c index 50632639c..1432d8ba9 100644 --- a/lib/builtins/fixunsxfsi.c +++ b/lib/builtins/fixunsxfsi.c @@ -1,33 +1,29 @@ -/* ===-- fixunsxfsi.c - Implement __fixunsxfsi -----------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __fixunsxfsi for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixunsxfsi.c - Implement __fixunsxfsi -----------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __fixunsxfsi for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #if !_ARCH_PPC #include "int_lib.h" -/* Returns: convert a to a unsigned int, rounding toward zero. - * Negative values all become zero. - */ +// Returns: convert a to a unsigned int, rounding toward zero. +// Negative values all become zero. -/* Assumption: long double is an intel 80 bit floating point type padded with 6 - * bytes su_int is a 32 bit integral type value in long double is representable - * in su_int or is negative - */ +// Assumption: long double is an intel 80 bit floating point type padded with 6 +// bytes su_int is a 32 bit integral type value in long double is representable +// in su_int or is negative -/* gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee - * eeee | 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm - * mmmm mmmm mmmm - */ +// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee +// eeee | 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm +// mmmm mmmm mmmm COMPILER_RT_ABI su_int __fixunsxfsi(long double a) { long_double_bits fb; @@ -40,4 +36,4 @@ COMPILER_RT_ABI su_int __fixunsxfsi(long double a) { return fb.u.low.s.high >> (31 - e); } -#endif /* !_ARCH_PPC */ +#endif // !_ARCH_PPC diff --git a/lib/builtins/fixunsxfti.c b/lib/builtins/fixunsxfti.c index 4bfdc598b..508554e4f 100644 --- a/lib/builtins/fixunsxfti.c +++ b/lib/builtins/fixunsxfti.c @@ -1,33 +1,29 @@ -/* ===-- fixunsxfti.c - Implement __fixunsxfti -----------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __fixunsxfti for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixunsxfti.c - Implement __fixunsxfti -----------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __fixunsxfti for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: convert a to a unsigned long long, rounding toward zero. - * Negative values all become zero. - */ +// Returns: convert a to a unsigned long long, rounding toward zero. +// Negative values all become zero. -/* Assumption: long double is an intel 80 bit floating point type padded with 6 - * bytes tu_int is a 128 bit integral type value in long double is representable - * in tu_int or is negative - */ +// Assumption: long double is an intel 80 bit floating point type padded with 6 +// bytes tu_int is a 128 bit integral type value in long double is representable +// in tu_int or is negative -/* gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee - * eeee | 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm - * mmmm mmmm mmmm - */ +// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee +// eeee | 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm +// mmmm mmmm mmmm COMPILER_RT_ABI tu_int __fixunsxfti(long double a) { long_double_bits fb; @@ -45,4 +41,4 @@ COMPILER_RT_ABI tu_int __fixunsxfti(long double a) { return r; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/fixxfdi.c b/lib/builtins/fixxfdi.c index c535e808b..4783c0101 100644 --- a/lib/builtins/fixxfdi.c +++ b/lib/builtins/fixxfdi.c @@ -1,31 +1,28 @@ -/* ===-- fixxfdi.c - Implement __fixxfdi -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __fixxfdi for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixxfdi.c - Implement __fixxfdi -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __fixxfdi for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #if !_ARCH_PPC #include "int_lib.h" -/* Returns: convert a to a signed long long, rounding toward zero. */ +// Returns: convert a to a signed long long, rounding toward zero. -/* Assumption: long double is an intel 80 bit floating point type padded with 6 - * bytes di_int is a 64 bit integral type value in long double is representable - * in di_int (no range checking performed) - */ +// Assumption: long double is an intel 80 bit floating point type padded with 6 +// bytes di_int is a 64 bit integral type value in long double is representable +// in di_int (no range checking performed) -/* gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee - * eeee | 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm - * mmmm mmmm mmmm - */ +// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee +// eeee | 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm +// mmmm mmmm mmmm COMPILER_RT_ABI di_int __fixxfdi(long double a) { const di_int di_max = (di_int)((~(du_int)0) / 2); @@ -43,4 +40,4 @@ COMPILER_RT_ABI di_int __fixxfdi(long double a) { return (r ^ s) - s; } -#endif /* !_ARCH_PPC */ +#endif // !_ARCH_PPC diff --git a/lib/builtins/fixxfti.c b/lib/builtins/fixxfti.c index 705f39427..90e03116e 100644 --- a/lib/builtins/fixxfti.c +++ b/lib/builtins/fixxfti.c @@ -1,31 +1,28 @@ -/* ===-- fixxfti.c - Implement __fixxfti -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __fixxfti for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- fixxfti.c - Implement __fixxfti -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __fixxfti for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: convert a to a signed long long, rounding toward zero. */ +// Returns: convert a to a signed long long, rounding toward zero. -/* Assumption: long double is an intel 80 bit floating point type padded with 6 - * bytes ti_int is a 128 bit integral type value in long double is representable - * in ti_int - */ +// Assumption: long double is an intel 80 bit floating point type padded with 6 +// bytes ti_int is a 128 bit integral type value in long double is representable +// in ti_int -/* gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee - * eeee | 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm - * mmmm mmmm mmmm - */ +// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee +// eeee | 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm +// mmmm mmmm mmmm COMPILER_RT_ABI ti_int __fixxfti(long double a) { const ti_int ti_max = (ti_int)((~(tu_int)0) / 2); @@ -46,4 +43,4 @@ COMPILER_RT_ABI ti_int __fixxfti(long double a) { return (r ^ s) - s; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/floatdidf.c b/lib/builtins/floatdidf.c index c14d52fd3..b45041316 100644 --- a/lib/builtins/floatdidf.c +++ b/lib/builtins/floatdidf.c @@ -1,31 +1,28 @@ -/*===-- floatdidf.c - Implement __floatdidf -------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------=== - * - * This file implements __floatdidf for the compiler_rt library. - * - *===----------------------------------------------------------------------=== - */ +//===-- floatdidf.c - Implement __floatdidf -------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __floatdidf for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: convert a to a double, rounding toward even. */ +// Returns: convert a to a double, rounding toward even. -/* Assumption: double is a IEEE 64 bit floating point type - * di_int is a 64 bit integral type - */ +// Assumption: double is a IEEE 64 bit floating point type +// di_int is a 64 bit integral type -/* seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm - * mmmm */ +// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm +// mmmm #ifndef __SOFT_FP__ -/* Support for systems that have hardware floating-point; we'll set the inexact - * flag as a side-effect of this computation. - */ +// Support for systems that have hardware floating-point; we'll set the inexact +// flag as a side-effect of this computation. COMPILER_RT_ABI double __floatdidf(di_int a) { static const double twop52 = 4503599627370496.0; // 0x1.0p52 @@ -44,10 +41,9 @@ COMPILER_RT_ABI double __floatdidf(di_int a) { } #else -/* Support for systems that don't have hardware floating-point; there are no - * flags to set, and we don't want to code-gen to an unknown soft-float - * implementation. - */ +// Support for systems that don't have hardware floating-point; there are no +// flags to set, and we don't want to code-gen to an unknown soft-float +// implementation. COMPILER_RT_ABI double __floatdidf(di_int a) { if (a == 0) @@ -55,17 +51,16 @@ COMPILER_RT_ABI double __floatdidf(di_int a) { const unsigned N = sizeof(di_int) * CHAR_BIT; const di_int s = a >> (N - 1); a = (a ^ s) - s; - int sd = N - __builtin_clzll(a); /* number of significant digits */ - int e = sd - 1; /* exponent */ + int sd = N - __builtin_clzll(a); // number of significant digits + int e = sd - 1; // exponent if (sd > DBL_MANT_DIG) { - /* start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx - * finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR - * 12345678901234567890123456 - * 1 = msb 1 bit - * P = bit DBL_MANT_DIG-1 bits to the right of 1 - * Q = bit DBL_MANT_DIG bits to the right of 1 - * R = "or" of all bits to the right of Q - */ + // start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx + // finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR + // 12345678901234567890123456 + // 1 = msb 1 bit + // P = bit DBL_MANT_DIG-1 bits to the right of 1 + // Q = bit DBL_MANT_DIG bits to the right of 1 + // R = "or" of all bits to the right of Q switch (sd) { case DBL_MANT_DIG + 1: a <<= 1; @@ -76,25 +71,25 @@ COMPILER_RT_ABI double __floatdidf(di_int a) { a = ((du_int)a >> (sd - (DBL_MANT_DIG + 2))) | ((a & ((du_int)(-1) >> ((N + DBL_MANT_DIG + 2) - sd))) != 0); }; - /* finish: */ - a |= (a & 4) != 0; /* Or P into R */ - ++a; /* round - this step may add a significant bit */ - a >>= 2; /* dump Q and R */ - /* a is now rounded to DBL_MANT_DIG or DBL_MANT_DIG+1 bits */ + // finish: + a |= (a & 4) != 0; // Or P into R + ++a; // round - this step may add a significant bit + a >>= 2; // dump Q and R + // a is now rounded to DBL_MANT_DIG or DBL_MANT_DIG+1 bits if (a & ((du_int)1 << DBL_MANT_DIG)) { a >>= 1; ++e; } - /* a is now rounded to DBL_MANT_DIG bits */ + // a is now rounded to DBL_MANT_DIG bits } else { a <<= (DBL_MANT_DIG - sd); - /* a is now rounded to DBL_MANT_DIG bits */ + // a is now rounded to DBL_MANT_DIG bits } double_bits fb; - fb.u.s.high = ((su_int)s & 0x80000000) | /* sign */ - ((e + 1023) << 20) | /* exponent */ - ((su_int)(a >> 32) & 0x000FFFFF); /* mantissa-high */ - fb.u.s.low = (su_int)a; /* mantissa-low */ + fb.u.s.high = ((su_int)s & 0x80000000) | // sign + ((e + 1023) << 20) | // exponent + ((su_int)(a >> 32) & 0x000FFFFF); // mantissa-high + fb.u.s.low = (su_int)a; // mantissa-low return fb.f; } #endif diff --git a/lib/builtins/floatdisf.c b/lib/builtins/floatdisf.c index fa9f29578..865e47571 100644 --- a/lib/builtins/floatdisf.c +++ b/lib/builtins/floatdisf.c @@ -1,23 +1,21 @@ -/*===-- floatdisf.c - Implement __floatdisf -------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------=== - * - * This file implements __floatdisf for the compiler_rt library. - * - *===----------------------------------------------------------------------=== - */ +//===-- floatdisf.c - Implement __floatdisf -------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __floatdisf for the compiler_rt library. +// +//===----------------------------------------------------------------------===// -/* Returns: convert a to a float, rounding toward even.*/ +// Returns: convert a to a float, rounding toward even. -/* Assumption: float is a IEEE 32 bit floating point type - * di_int is a 64 bit integral type - */ +// Assumption: float is a IEEE 32 bit floating point type +// di_int is a 64 bit integral type -/* seee eeee emmm mmmm mmmm mmmm mmmm mmmm */ +// seee eeee emmm mmmm mmmm mmmm mmmm mmmm #include "int_lib.h" @@ -27,17 +25,16 @@ COMPILER_RT_ABI float __floatdisf(di_int a) { const unsigned N = sizeof(di_int) * CHAR_BIT; const di_int s = a >> (N - 1); a = (a ^ s) - s; - int sd = N - __builtin_clzll(a); /* number of significant digits */ - int e = sd - 1; /* exponent */ + int sd = N - __builtin_clzll(a); // number of significant digits + int e = sd - 1; // exponent if (sd > FLT_MANT_DIG) { - /* start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx - * finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR - * 12345678901234567890123456 - * 1 = msb 1 bit - * P = bit FLT_MANT_DIG-1 bits to the right of 1 - * Q = bit FLT_MANT_DIG bits to the right of 1 - * R = "or" of all bits to the right of Q - */ + // start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx + // finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR + // 12345678901234567890123456 + // 1 = msb 1 bit + // P = bit FLT_MANT_DIG-1 bits to the right of 1 + // Q = bit FLT_MANT_DIG bits to the right of 1 + // R = "or" of all bits to the right of Q switch (sd) { case FLT_MANT_DIG + 1: a <<= 1; @@ -48,24 +45,24 @@ COMPILER_RT_ABI float __floatdisf(di_int a) { a = ((du_int)a >> (sd - (FLT_MANT_DIG + 2))) | ((a & ((du_int)(-1) >> ((N + FLT_MANT_DIG + 2) - sd))) != 0); }; - /* finish: */ - a |= (a & 4) != 0; /* Or P into R */ - ++a; /* round - this step may add a significant bit */ - a >>= 2; /* dump Q and R */ - /* a is now rounded to FLT_MANT_DIG or FLT_MANT_DIG+1 bits */ + // finish: + a |= (a & 4) != 0; // Or P into R + ++a; // round - this step may add a significant bit + a >>= 2; // dump Q and R + // a is now rounded to FLT_MANT_DIG or FLT_MANT_DIG+1 bits if (a & ((du_int)1 << FLT_MANT_DIG)) { a >>= 1; ++e; } - /* a is now rounded to FLT_MANT_DIG bits */ + // a is now rounded to FLT_MANT_DIG bits } else { a <<= (FLT_MANT_DIG - sd); - /* a is now rounded to FLT_MANT_DIG bits */ + // a is now rounded to FLT_MANT_DIG bits } float_bits fb; - fb.u = ((su_int)s & 0x80000000) | /* sign */ - ((e + 127) << 23) | /* exponent */ - ((su_int)a & 0x007FFFFF); /* mantissa */ + fb.u = ((su_int)s & 0x80000000) | // sign + ((e + 127) << 23) | // exponent + ((su_int)a & 0x007FFFFF); // mantissa return fb.f; } diff --git a/lib/builtins/floatdixf.c b/lib/builtins/floatdixf.c index d88a9d9d4..ad5deb2d4 100644 --- a/lib/builtins/floatdixf.c +++ b/lib/builtins/floatdixf.c @@ -1,30 +1,27 @@ -/* ===-- floatdixf.c - Implement __floatdixf -------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __floatdixf for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- floatdixf.c - Implement __floatdixf -------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __floatdixf for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #if !_ARCH_PPC #include "int_lib.h" -/* Returns: convert a to a long double, rounding toward even. */ +// Returns: convert a to a long double, rounding toward even. -/* Assumption: long double is a IEEE 80 bit floating point type padded to 128 - * bits di_int is a 64 bit integral type - */ +// Assumption: long double is a IEEE 80 bit floating point type padded to 128 +// bits di_int is a 64 bit integral type -/* gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee - * eeee | 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm - * mmmm mmmm mmmm - */ +// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee +// eeee | 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm +// mmmm mmmm mmmm COMPILER_RT_ABI long double __floatdixf(di_int a) { if (a == 0) @@ -33,12 +30,12 @@ COMPILER_RT_ABI long double __floatdixf(di_int a) { const di_int s = a >> (N - 1); a = (a ^ s) - s; int clz = __builtin_clzll(a); - int e = (N - 1) - clz; /* exponent */ + int e = (N - 1) - clz; // exponent long_double_bits fb; - fb.u.high.s.low = ((su_int)s & 0x00008000) | /* sign */ - (e + 16383); /* exponent */ - fb.u.low.all = a << clz; /* mantissa */ + fb.u.high.s.low = ((su_int)s & 0x00008000) | // sign + (e + 16383); // exponent + fb.u.low.all = a << clz; // mantissa return fb.f; } -#endif /* !_ARCH_PPC */ +#endif // !_ARCH_PPC diff --git a/lib/builtins/floattidf.c b/lib/builtins/floattidf.c index 9fc5783dc..0a1c04bec 100644 --- a/lib/builtins/floattidf.c +++ b/lib/builtins/floattidf.c @@ -1,28 +1,26 @@ -/* ===-- floattidf.c - Implement __floattidf -------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __floattidf for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- floattidf.c - Implement __floattidf -------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __floattidf for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: convert a to a double, rounding toward even.*/ +// Returns: convert a to a double, rounding toward even. -/* Assumption: double is a IEEE 64 bit floating point type - * ti_int is a 128 bit integral type - */ +// Assumption: double is a IEEE 64 bit floating point type +// ti_int is a 128 bit integral type -/* seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm - * mmmm */ +// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm +// mmmm COMPILER_RT_ABI double __floattidf(ti_int a) { if (a == 0) @@ -30,17 +28,16 @@ COMPILER_RT_ABI double __floattidf(ti_int a) { const unsigned N = sizeof(ti_int) * CHAR_BIT; const ti_int s = a >> (N - 1); a = (a ^ s) - s; - int sd = N - __clzti2(a); /* number of significant digits */ - int e = sd - 1; /* exponent */ + int sd = N - __clzti2(a); // number of significant digits + int e = sd - 1; // exponent if (sd > DBL_MANT_DIG) { - /* start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx - * finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR - * 12345678901234567890123456 - * 1 = msb 1 bit - * P = bit DBL_MANT_DIG-1 bits to the right of 1 - * Q = bit DBL_MANT_DIG bits to the right of 1 - * R = "or" of all bits to the right of Q - */ + // start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx + // finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR + // 12345678901234567890123456 + // 1 = msb 1 bit + // P = bit DBL_MANT_DIG-1 bits to the right of 1 + // Q = bit DBL_MANT_DIG bits to the right of 1 + // R = "or" of all bits to the right of Q switch (sd) { case DBL_MANT_DIG + 1: a <<= 1; @@ -51,26 +48,26 @@ COMPILER_RT_ABI double __floattidf(ti_int a) { a = ((tu_int)a >> (sd - (DBL_MANT_DIG + 2))) | ((a & ((tu_int)(-1) >> ((N + DBL_MANT_DIG + 2) - sd))) != 0); }; - /* finish: */ - a |= (a & 4) != 0; /* Or P into R */ - ++a; /* round - this step may add a significant bit */ - a >>= 2; /* dump Q and R */ - /* a is now rounded to DBL_MANT_DIG or DBL_MANT_DIG+1 bits */ + // finish: + a |= (a & 4) != 0; // Or P into R + ++a; // round - this step may add a significant bit + a >>= 2; // dump Q and R + // a is now rounded to DBL_MANT_DIG or DBL_MANT_DIG+1 bits if (a & ((tu_int)1 << DBL_MANT_DIG)) { a >>= 1; ++e; } - /* a is now rounded to DBL_MANT_DIG bits */ + // a is now rounded to DBL_MANT_DIG bits } else { a <<= (DBL_MANT_DIG - sd); - /* a is now rounded to DBL_MANT_DIG bits */ + // a is now rounded to DBL_MANT_DIG bits } double_bits fb; - fb.u.s.high = ((su_int)s & 0x80000000) | /* sign */ - ((e + 1023) << 20) | /* exponent */ - ((su_int)(a >> 32) & 0x000FFFFF); /* mantissa-high */ - fb.u.s.low = (su_int)a; /* mantissa-low */ + fb.u.s.high = ((su_int)s & 0x80000000) | // sign + ((e + 1023) << 20) | // exponent + ((su_int)(a >> 32) & 0x000FFFFF); // mantissa-high + fb.u.s.low = (su_int)a; // mantissa-low return fb.f; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/floattisf.c b/lib/builtins/floattisf.c index a419a7990..a8fcdbe14 100644 --- a/lib/builtins/floattisf.c +++ b/lib/builtins/floattisf.c @@ -1,27 +1,25 @@ -/* ===-- floattisf.c - Implement __floattisf -------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __floattisf for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- floattisf.c - Implement __floattisf -------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __floattisf for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: convert a to a float, rounding toward even. */ +// Returns: convert a to a float, rounding toward even. -/* Assumption: float is a IEEE 32 bit floating point type - * ti_int is a 128 bit integral type - */ +// Assumption: float is a IEEE 32 bit floating point type +// ti_int is a 128 bit integral type -/* seee eeee emmm mmmm mmmm mmmm mmmm mmmm */ +// seee eeee emmm mmmm mmmm mmmm mmmm mmmm COMPILER_RT_ABI float __floattisf(ti_int a) { if (a == 0) @@ -29,17 +27,16 @@ COMPILER_RT_ABI float __floattisf(ti_int a) { const unsigned N = sizeof(ti_int) * CHAR_BIT; const ti_int s = a >> (N - 1); a = (a ^ s) - s; - int sd = N - __clzti2(a); /* number of significant digits */ - int e = sd - 1; /* exponent */ + int sd = N - __clzti2(a); // number of significant digits + int e = sd - 1; // exponent if (sd > FLT_MANT_DIG) { - /* start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx - * finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR - * 12345678901234567890123456 - * 1 = msb 1 bit - * P = bit FLT_MANT_DIG-1 bits to the right of 1 - * Q = bit FLT_MANT_DIG bits to the right of 1 - * R = "or" of all bits to the right of Q - */ + // start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx + // finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR + // 12345678901234567890123456 + // 1 = msb 1 bit + // P = bit FLT_MANT_DIG-1 bits to the right of 1 + // Q = bit FLT_MANT_DIG bits to the right of 1 + // R = "or" of all bits to the right of Q switch (sd) { case FLT_MANT_DIG + 1: a <<= 1; @@ -50,25 +47,25 @@ COMPILER_RT_ABI float __floattisf(ti_int a) { a = ((tu_int)a >> (sd - (FLT_MANT_DIG + 2))) | ((a & ((tu_int)(-1) >> ((N + FLT_MANT_DIG + 2) - sd))) != 0); }; - /* finish: */ - a |= (a & 4) != 0; /* Or P into R */ - ++a; /* round - this step may add a significant bit */ - a >>= 2; /* dump Q and R */ - /* a is now rounded to FLT_MANT_DIG or FLT_MANT_DIG+1 bits */ + // finish: + a |= (a & 4) != 0; // Or P into R + ++a; // round - this step may add a significant bit + a >>= 2; // dump Q and R + // a is now rounded to FLT_MANT_DIG or FLT_MANT_DIG+1 bits if (a & ((tu_int)1 << FLT_MANT_DIG)) { a >>= 1; ++e; } - /* a is now rounded to FLT_MANT_DIG bits */ + // a is now rounded to FLT_MANT_DIG bits } else { a <<= (FLT_MANT_DIG - sd); - /* a is now rounded to FLT_MANT_DIG bits */ + // a is now rounded to FLT_MANT_DIG bits } float_bits fb; - fb.u = ((su_int)s & 0x80000000) | /* sign */ - ((e + 127) << 23) | /* exponent */ - ((su_int)a & 0x007FFFFF); /* mantissa */ + fb.u = ((su_int)s & 0x80000000) | // sign + ((e + 127) << 23) | // exponent + ((su_int)a & 0x007FFFFF); // mantissa return fb.f; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/floattitf.c b/lib/builtins/floattitf.c index e9047472e..196cbdae1 100644 --- a/lib/builtins/floattitf.c +++ b/lib/builtins/floattitf.c @@ -16,16 +16,14 @@ #include "fp_lib.h" #include "int_lib.h" -/* Returns: convert a ti_int to a fp_t, rounding toward even. */ +// Returns: convert a ti_int to a fp_t, rounding toward even. -/* Assumption: fp_t is a IEEE 128 bit floating point type - * ti_int is a 128 bit integral type - */ +// Assumption: fp_t is a IEEE 128 bit floating point type +// ti_int is a 128 bit integral type -/* seee eeee eeee eeee mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm - * mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm - * mmmm mmmm mmmm - */ +// seee eeee eeee eeee mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm +// mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm +// mmmm mmmm mmmm #if defined(CRT_HAS_128BIT) && defined(CRT_LDBL_128BIT) COMPILER_RT_ABI fp_t __floattitf(ti_int a) { @@ -34,17 +32,16 @@ COMPILER_RT_ABI fp_t __floattitf(ti_int a) { const unsigned N = sizeof(ti_int) * CHAR_BIT; const ti_int s = a >> (N - 1); a = (a ^ s) - s; - int sd = N - __clzti2(a); /* number of significant digits */ - int e = sd - 1; /* exponent */ + int sd = N - __clzti2(a); // number of significant digits + int e = sd - 1; // exponent if (sd > LDBL_MANT_DIG) { - /* start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx - * finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR - * 12345678901234567890123456 - * 1 = msb 1 bit - * P = bit LDBL_MANT_DIG-1 bits to the right of 1 - * Q = bit LDBL_MANT_DIG bits to the right of 1 - * R = "or" of all bits to the right of Q - */ + // start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx + // finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR + // 12345678901234567890123456 + // 1 = msb 1 bit + // P = bit LDBL_MANT_DIG-1 bits to the right of 1 + // Q = bit LDBL_MANT_DIG bits to the right of 1 + // R = "or" of all bits to the right of Q switch (sd) { case LDBL_MANT_DIG + 1: a <<= 1; @@ -55,25 +52,25 @@ COMPILER_RT_ABI fp_t __floattitf(ti_int a) { a = ((tu_int)a >> (sd - (LDBL_MANT_DIG + 2))) | ((a & ((tu_int)(-1) >> ((N + LDBL_MANT_DIG + 2) - sd))) != 0); }; - /* finish: */ - a |= (a & 4) != 0; /* Or P into R */ - ++a; /* round - this step may add a significant bit */ - a >>= 2; /* dump Q and R */ - /* a is now rounded to LDBL_MANT_DIG or LDBL_MANT_DIG+1 bits */ + // finish: + a |= (a & 4) != 0; // Or P into R + ++a; // round - this step may add a significant bit + a >>= 2; // dump Q and R + // a is now rounded to LDBL_MANT_DIG or LDBL_MANT_DIG+1 bits if (a & ((tu_int)1 << LDBL_MANT_DIG)) { a >>= 1; ++e; } - /* a is now rounded to LDBL_MANT_DIG bits */ + // a is now rounded to LDBL_MANT_DIG bits } else { a <<= (LDBL_MANT_DIG - sd); - /* a is now rounded to LDBL_MANT_DIG bits */ + // a is now rounded to LDBL_MANT_DIG bits } long_double_bits fb; - fb.u.high.all = (s & 0x8000000000000000LL) /* sign */ - | (du_int)(e + 16383) << 48 /* exponent */ - | ((a >> 64) & 0x0000ffffffffffffLL); /* significand */ + fb.u.high.all = (s & 0x8000000000000000LL) // sign + | (du_int)(e + 16383) << 48 // exponent + | ((a >> 64) & 0x0000ffffffffffffLL); // significand fb.u.low.all = (du_int)(a); return fb.f; } diff --git a/lib/builtins/floattixf.c b/lib/builtins/floattixf.c index fe145cbc4..23796f1bb 100644 --- a/lib/builtins/floattixf.c +++ b/lib/builtins/floattixf.c @@ -1,30 +1,27 @@ -/* ===-- floattixf.c - Implement __floattixf -------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __floattixf for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- floattixf.c - Implement __floattixf -------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __floattixf for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: convert a to a long double, rounding toward even. */ +// Returns: convert a to a long double, rounding toward even. -/* Assumption: long double is a IEEE 80 bit floating point type padded to 128 - * bits ti_int is a 128 bit integral type - */ +// Assumption: long double is a IEEE 80 bit floating point type padded to 128 +// bits ti_int is a 128 bit integral type -/* gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee - * eeee | 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm - * mmmm mmmm mmmm - */ +// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee +// eeee | 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm +// mmmm mmmm mmmm COMPILER_RT_ABI long double __floattixf(ti_int a) { if (a == 0) @@ -32,17 +29,16 @@ COMPILER_RT_ABI long double __floattixf(ti_int a) { const unsigned N = sizeof(ti_int) * CHAR_BIT; const ti_int s = a >> (N - 1); a = (a ^ s) - s; - int sd = N - __clzti2(a); /* number of significant digits */ - int e = sd - 1; /* exponent */ + int sd = N - __clzti2(a); // number of significant digits + int e = sd - 1; // exponent if (sd > LDBL_MANT_DIG) { - /* start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx - * finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR - * 12345678901234567890123456 - * 1 = msb 1 bit - * P = bit LDBL_MANT_DIG-1 bits to the right of 1 - * Q = bit LDBL_MANT_DIG bits to the right of 1 - * R = "or" of all bits to the right of Q - */ + // start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx + // finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR + // 12345678901234567890123456 + // 1 = msb 1 bit + // P = bit LDBL_MANT_DIG-1 bits to the right of 1 + // Q = bit LDBL_MANT_DIG bits to the right of 1 + // R = "or" of all bits to the right of Q switch (sd) { case LDBL_MANT_DIG + 1: a <<= 1; @@ -53,25 +49,25 @@ COMPILER_RT_ABI long double __floattixf(ti_int a) { a = ((tu_int)a >> (sd - (LDBL_MANT_DIG + 2))) | ((a & ((tu_int)(-1) >> ((N + LDBL_MANT_DIG + 2) - sd))) != 0); }; - /* finish: */ - a |= (a & 4) != 0; /* Or P into R */ - ++a; /* round - this step may add a significant bit */ - a >>= 2; /* dump Q and R */ - /* a is now rounded to LDBL_MANT_DIG or LDBL_MANT_DIG+1 bits */ + // finish: + a |= (a & 4) != 0; // Or P into R + ++a; // round - this step may add a significant bit + a >>= 2; // dump Q and R + // a is now rounded to LDBL_MANT_DIG or LDBL_MANT_DIG+1 bits if (a & ((tu_int)1 << LDBL_MANT_DIG)) { a >>= 1; ++e; } - /* a is now rounded to LDBL_MANT_DIG bits */ + // a is now rounded to LDBL_MANT_DIG bits } else { a <<= (LDBL_MANT_DIG - sd); - /* a is now rounded to LDBL_MANT_DIG bits */ + // a is now rounded to LDBL_MANT_DIG bits } long_double_bits fb; - fb.u.high.s.low = ((su_int)s & 0x8000) | /* sign */ - (e + 16383); /* exponent */ - fb.u.low.all = (du_int)a; /* mantissa */ + fb.u.high.s.low = ((su_int)s & 0x8000) | // sign + (e + 16383); // exponent + fb.u.low.all = (du_int)a; // mantissa return fb.f; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/floatundidf.c b/lib/builtins/floatundidf.c index 6478caef0..e576868bf 100644 --- a/lib/builtins/floatundidf.c +++ b/lib/builtins/floatundidf.c @@ -1,31 +1,28 @@ -/* ===-- floatundidf.c - Implement __floatundidf ---------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __floatundidf for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- floatundidf.c - Implement __floatundidf ---------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __floatundidf for the compiler_rt library. +// +//===----------------------------------------------------------------------===// -/* Returns: convert a to a double, rounding toward even. */ +// Returns: convert a to a double, rounding toward even. -/* Assumption: double is a IEEE 64 bit floating point type - * du_int is a 64 bit integral type - */ +// Assumption: double is a IEEE 64 bit floating point type +// du_int is a 64 bit integral type -/* seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm - * mmmm */ +// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm +// mmmm #include "int_lib.h" #ifndef __SOFT_FP__ -/* Support for systems that have hardware floating-point; we'll set the inexact - * flag as a side-effect of this computation. - */ +// Support for systems that have hardware floating-point; we'll set the inexact +// flag as a side-effect of this computation. COMPILER_RT_ABI double __floatundidf(du_int a) { static const double twop52 = 4503599627370496.0; // 0x1.0p52 @@ -50,26 +47,24 @@ COMPILER_RT_ABI double __floatundidf(du_int a) { } #else -/* Support for systems that don't have hardware floating-point; there are no - * flags to set, and we don't want to code-gen to an unknown soft-float - * implementation. - */ +// Support for systems that don't have hardware floating-point; there are no +// flags to set, and we don't want to code-gen to an unknown soft-float +// implementation. COMPILER_RT_ABI double __floatundidf(du_int a) { if (a == 0) return 0.0; const unsigned N = sizeof(du_int) * CHAR_BIT; - int sd = N - __builtin_clzll(a); /* number of significant digits */ - int e = sd - 1; /* exponent */ + int sd = N - __builtin_clzll(a); // number of significant digits + int e = sd - 1; // exponent if (sd > DBL_MANT_DIG) { - /* start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx - * finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR - * 12345678901234567890123456 - * 1 = msb 1 bit - * P = bit DBL_MANT_DIG-1 bits to the right of 1 - * Q = bit DBL_MANT_DIG bits to the right of 1 - * R = "or" of all bits to the right of Q - */ + // start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx + // finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR + // 12345678901234567890123456 + // 1 = msb 1 bit + // P = bit DBL_MANT_DIG-1 bits to the right of 1 + // Q = bit DBL_MANT_DIG bits to the right of 1 + // R = "or" of all bits to the right of Q switch (sd) { case DBL_MANT_DIG + 1: a <<= 1; @@ -80,24 +75,24 @@ COMPILER_RT_ABI double __floatundidf(du_int a) { a = (a >> (sd - (DBL_MANT_DIG + 2))) | ((a & ((du_int)(-1) >> ((N + DBL_MANT_DIG + 2) - sd))) != 0); }; - /* finish: */ - a |= (a & 4) != 0; /* Or P into R */ - ++a; /* round - this step may add a significant bit */ - a >>= 2; /* dump Q and R */ - /* a is now rounded to DBL_MANT_DIG or DBL_MANT_DIG+1 bits */ + // finish: + a |= (a & 4) != 0; // Or P into R + ++a; // round - this step may add a significant bit + a >>= 2; // dump Q and R + // a is now rounded to DBL_MANT_DIG or DBL_MANT_DIG+1 bits if (a & ((du_int)1 << DBL_MANT_DIG)) { a >>= 1; ++e; } - /* a is now rounded to DBL_MANT_DIG bits */ + // a is now rounded to DBL_MANT_DIG bits } else { a <<= (DBL_MANT_DIG - sd); - /* a is now rounded to DBL_MANT_DIG bits */ + // a is now rounded to DBL_MANT_DIG bits } double_bits fb; - fb.u.s.high = ((e + 1023) << 20) | /* exponent */ - ((su_int)(a >> 32) & 0x000FFFFF); /* mantissa-high */ - fb.u.s.low = (su_int)a; /* mantissa-low */ + fb.u.s.high = ((e + 1023) << 20) | // exponent + ((su_int)(a >> 32) & 0x000FFFFF); // mantissa-high + fb.u.s.low = (su_int)a; // mantissa-low return fb.f; } #endif diff --git a/lib/builtins/floatundisf.c b/lib/builtins/floatundisf.c index a57dc47dd..03b1483a3 100644 --- a/lib/builtins/floatundisf.c +++ b/lib/builtins/floatundisf.c @@ -1,23 +1,21 @@ -/*===-- floatundisf.c - Implement __floatundisf ---------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __floatundisf for the compiler_rt library. - * - *===----------------------------------------------------------------------=== - */ +//===-- floatundisf.c - Implement __floatundisf ---------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __floatundisf for the compiler_rt library. +// +//===----------------------------------------------------------------------===// -/* Returns: convert a to a float, rounding toward even. */ +// Returns: convert a to a float, rounding toward even. -/* Assumption: float is a IEEE 32 bit floating point type - * du_int is a 64 bit integral type - */ +// Assumption: float is a IEEE 32 bit floating point type +// du_int is a 64 bit integral type -/* seee eeee emmm mmmm mmmm mmmm mmmm mmmm */ +// seee eeee emmm mmmm mmmm mmmm mmmm mmmm #include "int_lib.h" @@ -25,17 +23,16 @@ COMPILER_RT_ABI float __floatundisf(du_int a) { if (a == 0) return 0.0F; const unsigned N = sizeof(du_int) * CHAR_BIT; - int sd = N - __builtin_clzll(a); /* number of significant digits */ - int e = sd - 1; /* 8 exponent */ + int sd = N - __builtin_clzll(a); // number of significant digits + int e = sd - 1; // 8 exponent if (sd > FLT_MANT_DIG) { - /* start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx - * finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR - * 12345678901234567890123456 - * 1 = msb 1 bit - * P = bit FLT_MANT_DIG-1 bits to the right of 1 - * Q = bit FLT_MANT_DIG bits to the right of 1 - * R = "or" of all bits to the right of Q - */ + // start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx + // finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR + // 12345678901234567890123456 + // 1 = msb 1 bit + // P = bit FLT_MANT_DIG-1 bits to the right of 1 + // Q = bit FLT_MANT_DIG bits to the right of 1 + // R = "or" of all bits to the right of Q switch (sd) { case FLT_MANT_DIG + 1: a <<= 1; @@ -46,23 +43,23 @@ COMPILER_RT_ABI float __floatundisf(du_int a) { a = (a >> (sd - (FLT_MANT_DIG + 2))) | ((a & ((du_int)(-1) >> ((N + FLT_MANT_DIG + 2) - sd))) != 0); }; - /* finish: */ - a |= (a & 4) != 0; /* Or P into R */ - ++a; /* round - this step may add a significant bit */ - a >>= 2; /* dump Q and R */ - /* a is now rounded to FLT_MANT_DIG or FLT_MANT_DIG+1 bits */ + // finish: + a |= (a & 4) != 0; // Or P into R + ++a; // round - this step may add a significant bit + a >>= 2; // dump Q and R + // a is now rounded to FLT_MANT_DIG or FLT_MANT_DIG+1 bits if (a & ((du_int)1 << FLT_MANT_DIG)) { a >>= 1; ++e; } - /* a is now rounded to FLT_MANT_DIG bits */ + // a is now rounded to FLT_MANT_DIG bits } else { a <<= (FLT_MANT_DIG - sd); - /* a is now rounded to FLT_MANT_DIG bits */ + // a is now rounded to FLT_MANT_DIG bits } float_bits fb; - fb.u = ((e + 127) << 23) | /* exponent */ - ((su_int)a & 0x007FFFFF); /* mantissa */ + fb.u = ((e + 127) << 23) | // exponent + ((su_int)a & 0x007FFFFF); // mantissa return fb.f; } diff --git a/lib/builtins/floatundixf.c b/lib/builtins/floatundixf.c index 7c899385e..85264adac 100644 --- a/lib/builtins/floatundixf.c +++ b/lib/builtins/floatundixf.c @@ -1,40 +1,37 @@ -/* ===-- floatundixf.c - Implement __floatundixf ---------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __floatundixf for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- floatundixf.c - Implement __floatundixf ---------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __floatundixf for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #if !_ARCH_PPC #include "int_lib.h" -/* Returns: convert a to a long double, rounding toward even. */ +// Returns: convert a to a long double, rounding toward even. -/* Assumption: long double is a IEEE 80 bit floating point type padded to 128 - * bits du_int is a 64 bit integral type - */ +// Assumption: long double is a IEEE 80 bit floating point type padded to 128 +// bits du_int is a 64 bit integral type -/* gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee - * eeee | 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm - * mmmm mmmm mmmm - */ +// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee +// eeee | 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm +// mmmm mmmm mmmm COMPILER_RT_ABI long double __floatundixf(du_int a) { if (a == 0) return 0.0; const unsigned N = sizeof(du_int) * CHAR_BIT; int clz = __builtin_clzll(a); - int e = (N - 1) - clz; /* exponent */ + int e = (N - 1) - clz; // exponent long_double_bits fb; - fb.u.high.s.low = (e + 16383); /* exponent */ - fb.u.low.all = a << clz; /* mantissa */ + fb.u.high.s.low = (e + 16383); // exponent + fb.u.low.all = a << clz; // mantissa return fb.f; } -#endif /* _ARCH_PPC */ +#endif // _ARCH_PPC diff --git a/lib/builtins/floatuntidf.c b/lib/builtins/floatuntidf.c index 0f2f6f279..e69e65c1a 100644 --- a/lib/builtins/floatuntidf.c +++ b/lib/builtins/floatuntidf.c @@ -1,44 +1,41 @@ -/* ===-- floatuntidf.c - Implement __floatuntidf ---------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __floatuntidf for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- floatuntidf.c - Implement __floatuntidf ---------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __floatuntidf for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: convert a to a double, rounding toward even. */ +// Returns: convert a to a double, rounding toward even. -/* Assumption: double is a IEEE 64 bit floating point type - * tu_int is a 128 bit integral type - */ +// Assumption: double is a IEEE 64 bit floating point type +// tu_int is a 128 bit integral type -/* seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm - * mmmm */ +// seee eeee eeee mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm +// mmmm COMPILER_RT_ABI double __floatuntidf(tu_int a) { if (a == 0) return 0.0; const unsigned N = sizeof(tu_int) * CHAR_BIT; - int sd = N - __clzti2(a); /* number of significant digits */ - int e = sd - 1; /* exponent */ + int sd = N - __clzti2(a); // number of significant digits + int e = sd - 1; // exponent if (sd > DBL_MANT_DIG) { - /* start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx - * finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR - * 12345678901234567890123456 - * 1 = msb 1 bit - * P = bit DBL_MANT_DIG-1 bits to the right of 1 - * Q = bit DBL_MANT_DIG bits to the right of 1 - * R = "or" of all bits to the right of Q - */ + // start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx + // finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR + // 12345678901234567890123456 + // 1 = msb 1 bit + // P = bit DBL_MANT_DIG-1 bits to the right of 1 + // Q = bit DBL_MANT_DIG bits to the right of 1 + // R = "or" of all bits to the right of Q switch (sd) { case DBL_MANT_DIG + 1: a <<= 1; @@ -49,25 +46,25 @@ COMPILER_RT_ABI double __floatuntidf(tu_int a) { a = (a >> (sd - (DBL_MANT_DIG + 2))) | ((a & ((tu_int)(-1) >> ((N + DBL_MANT_DIG + 2) - sd))) != 0); }; - /* finish: */ - a |= (a & 4) != 0; /* Or P into R */ - ++a; /* round - this step may add a significant bit */ - a >>= 2; /* dump Q and R */ - /* a is now rounded to DBL_MANT_DIG or DBL_MANT_DIG+1 bits */ + // finish: + a |= (a & 4) != 0; // Or P into R + ++a; // round - this step may add a significant bit + a >>= 2; // dump Q and R + // a is now rounded to DBL_MANT_DIG or DBL_MANT_DIG+1 bits if (a & ((tu_int)1 << DBL_MANT_DIG)) { a >>= 1; ++e; } - /* a is now rounded to DBL_MANT_DIG bits */ + // a is now rounded to DBL_MANT_DIG bits } else { a <<= (DBL_MANT_DIG - sd); - /* a is now rounded to DBL_MANT_DIG bits */ + // a is now rounded to DBL_MANT_DIG bits } double_bits fb; - fb.u.s.high = ((e + 1023) << 20) | /* exponent */ - ((su_int)(a >> 32) & 0x000FFFFF); /* mantissa-high */ - fb.u.s.low = (su_int)a; /* mantissa-low */ + fb.u.s.high = ((e + 1023) << 20) | // exponent + ((su_int)(a >> 32) & 0x000FFFFF); // mantissa-high + fb.u.s.low = (su_int)a; // mantissa-low return fb.f; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/floatuntisf.c b/lib/builtins/floatuntisf.c index bf1501daa..9dec0ab5c 100644 --- a/lib/builtins/floatuntisf.c +++ b/lib/builtins/floatuntisf.c @@ -1,43 +1,40 @@ -/* ===-- floatuntisf.c - Implement __floatuntisf ---------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __floatuntisf for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- floatuntisf.c - Implement __floatuntisf ---------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __floatuntisf for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: convert a to a float, rounding toward even. */ +// Returns: convert a to a float, rounding toward even. -/* Assumption: float is a IEEE 32 bit floating point type - * tu_int is a 128 bit integral type - */ +// Assumption: float is a IEEE 32 bit floating point type +// tu_int is a 128 bit integral type -/* seee eeee emmm mmmm mmmm mmmm mmmm mmmm */ +// seee eeee emmm mmmm mmmm mmmm mmmm mmmm COMPILER_RT_ABI float __floatuntisf(tu_int a) { if (a == 0) return 0.0F; const unsigned N = sizeof(tu_int) * CHAR_BIT; - int sd = N - __clzti2(a); /* number of significant digits */ - int e = sd - 1; /* exponent */ + int sd = N - __clzti2(a); // number of significant digits + int e = sd - 1; // exponent if (sd > FLT_MANT_DIG) { - /* start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx - * finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR - * 12345678901234567890123456 - * 1 = msb 1 bit - * P = bit FLT_MANT_DIG-1 bits to the right of 1 - * Q = bit FLT_MANT_DIG bits to the right of 1 - * R = "or" of all bits to the right of Q - */ + // start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx + // finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR + // 12345678901234567890123456 + // 1 = msb 1 bit + // P = bit FLT_MANT_DIG-1 bits to the right of 1 + // Q = bit FLT_MANT_DIG bits to the right of 1 + // R = "or" of all bits to the right of Q switch (sd) { case FLT_MANT_DIG + 1: a <<= 1; @@ -48,24 +45,24 @@ COMPILER_RT_ABI float __floatuntisf(tu_int a) { a = (a >> (sd - (FLT_MANT_DIG + 2))) | ((a & ((tu_int)(-1) >> ((N + FLT_MANT_DIG + 2) - sd))) != 0); }; - /* finish: */ - a |= (a & 4) != 0; /* Or P into R */ - ++a; /* round - this step may add a significant bit */ - a >>= 2; /* dump Q and R */ - /* a is now rounded to FLT_MANT_DIG or FLT_MANT_DIG+1 bits */ + // finish: + a |= (a & 4) != 0; // Or P into R + ++a; // round - this step may add a significant bit + a >>= 2; // dump Q and R + // a is now rounded to FLT_MANT_DIG or FLT_MANT_DIG+1 bits if (a & ((tu_int)1 << FLT_MANT_DIG)) { a >>= 1; ++e; } - /* a is now rounded to FLT_MANT_DIG bits */ + // a is now rounded to FLT_MANT_DIG bits } else { a <<= (FLT_MANT_DIG - sd); - /* a is now rounded to FLT_MANT_DIG bits */ + // a is now rounded to FLT_MANT_DIG bits } float_bits fb; - fb.u = ((e + 127) << 23) | /* exponent */ - ((su_int)a & 0x007FFFFF); /* mantissa */ + fb.u = ((e + 127) << 23) | // exponent + ((su_int)a & 0x007FFFFF); // mantissa return fb.f; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/floatuntitf.c b/lib/builtins/floatuntitf.c index 6528f4379..d308d3118 100644 --- a/lib/builtins/floatuntitf.c +++ b/lib/builtins/floatuntitf.c @@ -16,33 +16,30 @@ #include "fp_lib.h" #include "int_lib.h" -/* Returns: convert a tu_int to a fp_t, rounding toward even. */ +// Returns: convert a tu_int to a fp_t, rounding toward even. -/* Assumption: fp_t is a IEEE 128 bit floating point type - * tu_int is a 128 bit integral type - */ +// Assumption: fp_t is a IEEE 128 bit floating point type +// tu_int is a 128 bit integral type -/* seee eeee eeee eeee mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm - * mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm - * mmmm mmmm mmmm - */ +// seee eeee eeee eeee mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm +// mmmm | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm +// mmmm mmmm mmmm #if defined(CRT_HAS_128BIT) && defined(CRT_LDBL_128BIT) COMPILER_RT_ABI fp_t __floatuntitf(tu_int a) { if (a == 0) return 0.0; const unsigned N = sizeof(tu_int) * CHAR_BIT; - int sd = N - __clzti2(a); /* number of significant digits */ - int e = sd - 1; /* exponent */ + int sd = N - __clzti2(a); // number of significant digits + int e = sd - 1; // exponent if (sd > LDBL_MANT_DIG) { - /* start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx - * finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR - * 12345678901234567890123456 - * 1 = msb 1 bit - * P = bit LDBL_MANT_DIG-1 bits to the right of 1 - * Q = bit LDBL_MANT_DIG bits to the right of 1 - * R = "or" of all bits to the right of Q - */ + // start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx + // finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR + // 12345678901234567890123456 + // 1 = msb 1 bit + // P = bit LDBL_MANT_DIG-1 bits to the right of 1 + // Q = bit LDBL_MANT_DIG bits to the right of 1 + // R = "or" of all bits to the right of Q switch (sd) { case LDBL_MANT_DIG + 1: a <<= 1; @@ -53,24 +50,24 @@ COMPILER_RT_ABI fp_t __floatuntitf(tu_int a) { a = (a >> (sd - (LDBL_MANT_DIG + 2))) | ((a & ((tu_int)(-1) >> ((N + LDBL_MANT_DIG + 2) - sd))) != 0); }; - /* finish: */ - a |= (a & 4) != 0; /* Or P into R */ - ++a; /* round - this step may add a significant bit */ - a >>= 2; /* dump Q and R */ - /* a is now rounded to LDBL_MANT_DIG or LDBL_MANT_DIG+1 bits */ + // finish: + a |= (a & 4) != 0; // Or P into R + ++a; // round - this step may add a significant bit + a >>= 2; // dump Q and R + // a is now rounded to LDBL_MANT_DIG or LDBL_MANT_DIG+1 bits if (a & ((tu_int)1 << LDBL_MANT_DIG)) { a >>= 1; ++e; } - /* a is now rounded to LDBL_MANT_DIG bits */ + // a is now rounded to LDBL_MANT_DIG bits } else { a <<= (LDBL_MANT_DIG - sd); - /* a is now rounded to LDBL_MANT_DIG bits */ + // a is now rounded to LDBL_MANT_DIG bits } long_double_bits fb; - fb.u.high.all = (du_int)(e + 16383) << 48 /* exponent */ - | ((a >> 64) & 0x0000ffffffffffffLL); /* significand */ + fb.u.high.all = (du_int)(e + 16383) << 48 // exponent + | ((a >> 64) & 0x0000ffffffffffffLL); // significand fb.u.low.all = (du_int)(a); return fb.f; } diff --git a/lib/builtins/floatuntixf.c b/lib/builtins/floatuntixf.c index 675c3ef41..efd8a27a0 100644 --- a/lib/builtins/floatuntixf.c +++ b/lib/builtins/floatuntixf.c @@ -1,46 +1,42 @@ -/* ===-- floatuntixf.c - Implement __floatuntixf ---------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __floatuntixf for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- floatuntixf.c - Implement __floatuntixf ---------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __floatuntixf for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: convert a to a long double, rounding toward even. */ +// Returns: convert a to a long double, rounding toward even. -/* Assumption: long double is a IEEE 80 bit floating point type padded to 128 - * bits tu_int is a 128 bit integral type - */ +// Assumption: long double is a IEEE 80 bit floating point type padded to 128 +// bits tu_int is a 128 bit integral type -/* gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee - * eeee | 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm - * mmmm mmmm mmmm - */ +// gggg gggg gggg gggg gggg gggg gggg gggg | gggg gggg gggg gggg seee eeee eeee +// eeee | 1mmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | mmmm mmmm mmmm mmmm mmmm +// mmmm mmmm mmmm COMPILER_RT_ABI long double __floatuntixf(tu_int a) { if (a == 0) return 0.0; const unsigned N = sizeof(tu_int) * CHAR_BIT; - int sd = N - __clzti2(a); /* number of significant digits */ - int e = sd - 1; /* exponent */ + int sd = N - __clzti2(a); // number of significant digits + int e = sd - 1; // exponent if (sd > LDBL_MANT_DIG) { - /* start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx - * finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR - * 12345678901234567890123456 - * 1 = msb 1 bit - * P = bit LDBL_MANT_DIG-1 bits to the right of 1 - * Q = bit LDBL_MANT_DIG bits to the right of 1 - * R = "or" of all bits to the right of Q - */ + // start: 0000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQxxxxxxxxxxxxxxxxxx + // finish: 000000000000000000000000000000000000001xxxxxxxxxxxxxxxxxxxxxxPQR + // 12345678901234567890123456 + // 1 = msb 1 bit + // P = bit LDBL_MANT_DIG-1 bits to the right of 1 + // Q = bit LDBL_MANT_DIG bits to the right of 1 + // R = "or" of all bits to the right of Q switch (sd) { case LDBL_MANT_DIG + 1: a <<= 1; @@ -51,23 +47,23 @@ COMPILER_RT_ABI long double __floatuntixf(tu_int a) { a = (a >> (sd - (LDBL_MANT_DIG + 2))) | ((a & ((tu_int)(-1) >> ((N + LDBL_MANT_DIG + 2) - sd))) != 0); }; - /* finish: */ - a |= (a & 4) != 0; /* Or P into R */ - ++a; /* round - this step may add a significant bit */ - a >>= 2; /* dump Q and R */ - /* a is now rounded to LDBL_MANT_DIG or LDBL_MANT_DIG+1 bits */ + // finish: + a |= (a & 4) != 0; // Or P into R + ++a; // round - this step may add a significant bit + a >>= 2; // dump Q and R + // a is now rounded to LDBL_MANT_DIG or LDBL_MANT_DIG+1 bits if (a & ((tu_int)1 << LDBL_MANT_DIG)) { a >>= 1; ++e; } - /* a is now rounded to LDBL_MANT_DIG bits */ + // a is now rounded to LDBL_MANT_DIG bits } else { a <<= (LDBL_MANT_DIG - sd); - /* a is now rounded to LDBL_MANT_DIG bits */ + // a is now rounded to LDBL_MANT_DIG bits } long_double_bits fb; - fb.u.high.s.low = (e + 16383); /* exponent */ - fb.u.low.all = (du_int)a; /* mantissa */ + fb.u.high.s.low = (e + 16383); // exponent + fb.u.low.all = (du_int)a; // mantissa return fb.f; } diff --git a/lib/builtins/gcc_personality_v0.c b/lib/builtins/gcc_personality_v0.c index d50cc369c..d12ee03c4 100644 --- a/lib/builtins/gcc_personality_v0.c +++ b/lib/builtins/gcc_personality_v0.c @@ -1,35 +1,29 @@ -/* ===-- gcc_personality_v0.c - Implement __gcc_personality_v0 -------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - */ +//===-- gcc_personality_v0.c - Implement __gcc_personality_v0 -------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #include <unwind.h> #if defined(__arm__) && !defined(__ARM_DWARF_EH__) && \ !defined(__USING_SJLJ_EXCEPTIONS__) -/* - * When building with older compilers (e.g. clang <3.9), it is possible that we - * have a version of unwind.h which does not provide the EHABI declarations - * which are quired for the C personality to conform to the specification. In - * order to provide forward compatibility for such compilers, we re-declare the - * necessary interfaces in the helper to permit a standalone compilation of the - * builtins (which contains the C unwinding personality for historical reasons). - */ +// When building with older compilers (e.g. clang <3.9), it is possible that we +// have a version of unwind.h which does not provide the EHABI declarations +// which are quired for the C personality to conform to the specification. In +// order to provide forward compatibility for such compilers, we re-declare the +// necessary interfaces in the helper to permit a standalone compilation of the +// builtins (which contains the C unwinding personality for historical reasons). #include "unwind-ehabi-helpers.h" #endif -/* - * Pointer encodings documented at: - * http://refspecs.freestandards.org/LSB_1.3.0/gLSB/gLSB/ehframehdr.html - */ +// Pointer encodings documented at: +// http://refspecs.freestandards.org/LSB_1.3.0/gLSB/gLSB/ehframehdr.html -#define DW_EH_PE_omit 0xff /* no data follows */ +#define DW_EH_PE_omit 0xff // no data follows #define DW_EH_PE_absptr 0x00 #define DW_EH_PE_uleb128 0x01 @@ -46,9 +40,9 @@ #define DW_EH_PE_datarel 0x30 #define DW_EH_PE_funcrel 0x40 #define DW_EH_PE_aligned 0x50 -#define DW_EH_PE_indirect 0x80 /* gcc extension */ +#define DW_EH_PE_indirect 0x80 // gcc extension -/* read a uleb128 encoded value and advance pointer */ +// read a uleb128 encoded value and advance pointer static uintptr_t readULEB128(const uint8_t **data) { uintptr_t result = 0; uintptr_t shift = 0; @@ -63,7 +57,7 @@ static uintptr_t readULEB128(const uint8_t **data) { return result; } -/* read a pointer encoded value and advance pointer */ +// read a pointer encoded value and advance pointer static uintptr_t readEncodedPointer(const uint8_t **data, uint8_t encoding) { const uint8_t *p = *data; uintptr_t result = 0; @@ -71,7 +65,7 @@ static uintptr_t readEncodedPointer(const uint8_t **data, uint8_t encoding) { if (encoding == DW_EH_PE_omit) return 0; - /* first get value */ + // first get value switch (encoding & 0x0F) { case DW_EH_PE_absptr: result = *((const uintptr_t *)p); @@ -106,15 +100,15 @@ static uintptr_t readEncodedPointer(const uint8_t **data, uint8_t encoding) { break; case DW_EH_PE_sleb128: default: - /* not supported */ + // not supported compilerrt_abort(); break; } - /* then add relative offset */ + // then add relative offset switch (encoding & 0x70) { case DW_EH_PE_absptr: - /* do nothing */ + // do nothing break; case DW_EH_PE_pcrel: result += (uintptr_t)(*data); @@ -124,12 +118,12 @@ static uintptr_t readEncodedPointer(const uint8_t **data, uint8_t encoding) { case DW_EH_PE_funcrel: case DW_EH_PE_aligned: default: - /* not supported */ + // not supported compilerrt_abort(); break; } - /* then apply indirection */ + // then apply indirection if (encoding & DW_EH_PE_indirect) { result = *((const uintptr_t *)result); } @@ -149,32 +143,28 @@ static inline _Unwind_Reason_Code continueUnwind(struct _Unwind_Exception *exceptionObject, struct _Unwind_Context *context) { #if USING_ARM_EHABI - /* - * On ARM EHABI the personality routine is responsible for actually - * unwinding a single stack frame before returning (ARM EHABI Sec. 6.1). - */ + // On ARM EHABI the personality routine is responsible for actually + // unwinding a single stack frame before returning (ARM EHABI Sec. 6.1). if (__gnu_unwind_frame(exceptionObject, context) != _URC_OK) return _URC_FAILURE; #endif return _URC_CONTINUE_UNWIND; } -/* - * The C compiler makes references to __gcc_personality_v0 in - * the dwarf unwind information for translation units that use - * __attribute__((cleanup(xx))) on local variables. - * This personality routine is called by the system unwinder - * on each frame as the stack is unwound during a C++ exception - * throw through a C function compiled with -fexceptions. - */ +// The C compiler makes references to __gcc_personality_v0 in +// the dwarf unwind information for translation units that use +// __attribute__((cleanup(xx))) on local variables. +// This personality routine is called by the system unwinder +// on each frame as the stack is unwound during a C++ exception +// throw through a C function compiled with -fexceptions. #if __USING_SJLJ_EXCEPTIONS__ -/* the setjump-longjump based exceptions personality routine has a - * different name */ +// the setjump-longjump based exceptions personality routine has a +// different name COMPILER_RT_ABI _Unwind_Reason_Code __gcc_personality_sj0( int version, _Unwind_Action actions, uint64_t exceptionClass, struct _Unwind_Exception *exceptionObject, struct _Unwind_Context *context) #elif USING_ARM_EHABI -/* The ARM EHABI personality routine has a different signature. */ +// The ARM EHABI personality routine has a different signature. COMPILER_RT_ABI _Unwind_Reason_Code __gcc_personality_v0( _Unwind_State state, struct _Unwind_Exception *exceptionObject, struct _Unwind_Context *context) @@ -184,18 +174,18 @@ COMPILER_RT_ABI _Unwind_Reason_Code __gcc_personality_v0( struct _Unwind_Exception *exceptionObject, struct _Unwind_Context *context) #endif { - /* Since C does not have catch clauses, there is nothing to do during */ - /* phase 1 (the search phase). */ + // Since C does not have catch clauses, there is nothing to do during + // phase 1 (the search phase). #if USING_ARM_EHABI - /* After resuming from a cleanup we should also continue on to the next - * frame straight away. */ + // After resuming from a cleanup we should also continue on to the next + // frame straight away. if ((state & _US_ACTION_MASK) != _US_UNWIND_FRAME_STARTING) #else if (actions & _UA_SEARCH_PHASE) #endif return continueUnwind(exceptionObject, context); - /* There is nothing to do if there is no LSDA for this frame. */ + // There is nothing to do if there is no LSDA for this frame. const uint8_t *lsda = (uint8_t *)_Unwind_GetLanguageSpecificData(context); if (lsda == (uint8_t *)0) return continueUnwind(exceptionObject, context); @@ -204,7 +194,7 @@ COMPILER_RT_ABI _Unwind_Reason_Code __gcc_personality_v0( uintptr_t funcStart = (uintptr_t)_Unwind_GetRegionStart(context); uintptr_t pcOffset = pc - funcStart; - /* Parse LSDA header. */ + // Parse LSDA header. uint8_t lpStartEncoding = *lsda++; if (lpStartEncoding != DW_EH_PE_omit) { readEncodedPointer(&lsda, lpStartEncoding); @@ -213,7 +203,7 @@ COMPILER_RT_ABI _Unwind_Reason_Code __gcc_personality_v0( if (ttypeEncoding != DW_EH_PE_omit) { readULEB128(&lsda); } - /* Walk call-site table looking for range that includes current PC. */ + // Walk call-site table looking for range that includes current PC. uint8_t callSiteEncoding = *lsda++; uint32_t callSiteTableLength = readULEB128(&lsda); const uint8_t *callSiteTableStart = lsda; @@ -223,15 +213,14 @@ COMPILER_RT_ABI _Unwind_Reason_Code __gcc_personality_v0( uintptr_t start = readEncodedPointer(&p, callSiteEncoding); uintptr_t length = readEncodedPointer(&p, callSiteEncoding); uintptr_t landingPad = readEncodedPointer(&p, callSiteEncoding); - readULEB128(&p); /* action value not used for C code */ + readULEB128(&p); // action value not used for C code if (landingPad == 0) - continue; /* no landing pad for this entry */ + continue; // no landing pad for this entry if ((start <= pcOffset) && (pcOffset < (start + length))) { - /* Found landing pad for the PC. - * Set Instruction Pointer to so we re-enter function - * at landing pad. The landing pad is created by the compiler - * to take two parameters in registers. - */ + // Found landing pad for the PC. + // Set Instruction Pointer to so we re-enter function + // at landing pad. The landing pad is created by the compiler + // to take two parameters in registers. _Unwind_SetGR(context, __builtin_eh_return_data_regno(0), (uintptr_t)exceptionObject); _Unwind_SetGR(context, __builtin_eh_return_data_regno(1), 0); @@ -240,6 +229,6 @@ COMPILER_RT_ABI _Unwind_Reason_Code __gcc_personality_v0( } } - /* No landing pad found, continue unwinding. */ + // No landing pad found, continue unwinding. return continueUnwind(exceptionObject, context); } diff --git a/lib/builtins/hexagon/common_entry_exit_abi1.S b/lib/builtins/hexagon/common_entry_exit_abi1.S index 1e8d9a12f..23fed01c6 100644 --- a/lib/builtins/hexagon/common_entry_exit_abi1.S +++ b/lib/builtins/hexagon/common_entry_exit_abi1.S @@ -6,8 +6,8 @@ // //===----------------------------------------------------------------------===// -/* Functions that implement common sequences in function prologues and epilogues - used to save code size */ +// Functions that implement common sequences in function prologues and epilogues +// used to save code size .macro FUNCTION_BEGIN name .text @@ -32,16 +32,16 @@ -/* Save r25:24 at fp+#-8 and r27:26 at fp+#-16. */ +// Save r25:24 at fp+#-8 and r27:26 at fp+#-16. -/* The compiler knows that the __save_* functions clobber LR. No other - registers should be used without informing the compiler. */ +// The compiler knows that the __save_* functions clobber LR. No other +// registers should be used without informing the compiler. -/* Since we can only issue one store per packet, we don't hurt performance by - simply jumping to the right point in this sequence of stores. */ +// Since we can only issue one store per packet, we don't hurt performance by +// simply jumping to the right point in this sequence of stores. FUNCTION_BEGIN __save_r24_through_r27 memd(fp+#-16) = r27:26 @@ -55,10 +55,10 @@ FUNCTION_END __save_r24_through_r25 -/* For each of the *_before_tailcall functions, jumpr lr is executed in parallel - with deallocframe. That way, the return gets the old value of lr, which is - where these functions need to return, and at the same time, lr gets the value - it needs going into the tail call. */ +// For each of the *_before_tailcall functions, jumpr lr is executed in parallel +// with deallocframe. That way, the return gets the old value of lr, which is +// where these functions need to return, and at the same time, lr gets the value +// it needs going into the tail call. FUNCTION_BEGIN __restore_r24_through_r27_and_deallocframe_before_tailcall r27:26 = memd(fp+#-16) @@ -73,8 +73,8 @@ FUNCTION_END __restore_r24_through_r25_and_deallocframe_before_tailcall -/* Here we use the extra load bandwidth to restore LR early, allowing the return - to occur in parallel with the deallocframe. */ +// Here we use the extra load bandwidth to restore LR early, allowing the return +// to occur in parallel with the deallocframe. FUNCTION_BEGIN __restore_r24_through_r27_and_deallocframe { @@ -91,7 +91,7 @@ FUNCTION_END __restore_r24_through_r27_and_deallocframe -/* Here the load bandwidth is maximized. */ +// Here the load bandwidth is maximized. FUNCTION_BEGIN __restore_r24_through_r25_and_deallocframe { diff --git a/lib/builtins/hexagon/common_entry_exit_abi2.S b/lib/builtins/hexagon/common_entry_exit_abi2.S index 323f89989..3b85aea2f 100644 --- a/lib/builtins/hexagon/common_entry_exit_abi2.S +++ b/lib/builtins/hexagon/common_entry_exit_abi2.S @@ -6,8 +6,8 @@ // //===----------------------------------------------------------------------===// -/* Functions that implement common sequences in function prologues and epilogues - used to save code size */ +// Functions that implement common sequences in function prologues and epilogues +// used to save code size .macro FUNCTION_BEGIN name .p2align 2 @@ -32,10 +32,10 @@ -/* Save r17:16 at fp+#-8, r19:18 at fp+#-16, r21:20 at fp+#-24, r23:22 at - fp+#-32, r25:24 at fp+#-40, and r27:26 at fp+#-48. - The compiler knows that the __save_* functions clobber LR. No other - registers should be used without informing the compiler. */ +// Save r17:16 at fp+#-8, r19:18 at fp+#-16, r21:20 at fp+#-24, r23:22 at +// fp+#-32, r25:24 at fp+#-40, and r27:26 at fp+#-48. +// The compiler knows that the __save_* functions clobber LR. No other +// registers should be used without informing the compiler. FUNCTION_BEGIN __save_r16_through_r27 { @@ -106,10 +106,10 @@ FUNCTION_BEGIN __save_r16_through_r17 } FUNCTION_END __save_r16_through_r17 -/* For each of the *_before_tailcall functions, jumpr lr is executed in parallel - with deallocframe. That way, the return gets the old value of lr, which is - where these functions need to return, and at the same time, lr gets the value - it needs going into the tail call. */ +// For each of the *_before_tailcall functions, jumpr lr is executed in parallel +// with deallocframe. That way, the return gets the old value of lr, which is +// where these functions need to return, and at the same time, lr gets the value +// it needs going into the tail call. FUNCTION_BEGIN __restore_r16_through_r27_and_deallocframe_before_tailcall diff --git a/lib/builtins/hexagon/common_entry_exit_legacy.S b/lib/builtins/hexagon/common_entry_exit_legacy.S index 8ee27514e..8a6044573 100644 --- a/lib/builtins/hexagon/common_entry_exit_legacy.S +++ b/lib/builtins/hexagon/common_entry_exit_legacy.S @@ -7,8 +7,8 @@ //===----------------------------------------------------------------------===// -/* Functions that implement common sequences in function prologues and epilogues - used to save code size */ +// Functions that implement common sequences in function prologues and epilogues +// used to save code size .macro FUNCTION_BEGIN name .text @@ -33,17 +33,17 @@ -/* Save r27:26 at fp+#-8, r25:24 at fp+#-16, r23:22 at fp+#-24, r21:20 at - fp+#-32, r19:18 at fp+#-40, and r17:16 at fp+#-48. */ +// Save r27:26 at fp+#-8, r25:24 at fp+#-16, r23:22 at fp+#-24, r21:20 at +// fp+#-32, r19:18 at fp+#-40, and r17:16 at fp+#-48. -/* The compiler knows that the __save_* functions clobber LR. No other - registers should be used without informing the compiler. */ +// The compiler knows that the __save_* functions clobber LR. No other +// registers should be used without informing the compiler. -/* Since we can only issue one store per packet, we don't hurt performance by - simply jumping to the right point in this sequence of stores. */ +// Since we can only issue one store per packet, we don't hurt performance by +// simply jumping to the right point in this sequence of stores. FUNCTION_BEGIN __save_r27_through_r16 memd(fp+#-48) = r17:16 @@ -64,10 +64,10 @@ FUNCTION_END __save_r27_through_r24 -/* For each of the *_before_sibcall functions, jumpr lr is executed in parallel - with deallocframe. That way, the return gets the old value of lr, which is - where these functions need to return, and at the same time, lr gets the value - it needs going into the sibcall. */ +// For each of the *_before_sibcall functions, jumpr lr is executed in parallel +// with deallocframe. That way, the return gets the old value of lr, which is +// where these functions need to return, and at the same time, lr gets the value +// it needs going into the sibcall. FUNCTION_BEGIN __restore_r27_through_r20_and_deallocframe_before_sibcall { @@ -107,8 +107,8 @@ FUNCTION_END __restore_r27_through_r26_and_deallocframe_before_sibcall -/* Here we use the extra load bandwidth to restore LR early, allowing the return - to occur in parallel with the deallocframe. */ +// Here we use the extra load bandwidth to restore LR early, allowing the return +// to occur in parallel with the deallocframe. FUNCTION_BEGIN __restore_r27_through_r16_and_deallocframe { @@ -135,7 +135,7 @@ FUNCTION_END __restore_r27_through_r24_and_deallocframe -/* Here the load bandwidth is maximized for all three functions. */ +// Here the load bandwidth is maximized for all three functions. FUNCTION_BEGIN __restore_r27_through_r18_and_deallocframe { diff --git a/lib/builtins/hexagon/dfaddsub.S b/lib/builtins/hexagon/dfaddsub.S index b02f0d63c..1b0d34550 100644 --- a/lib/builtins/hexagon/dfaddsub.S +++ b/lib/builtins/hexagon/dfaddsub.S @@ -6,7 +6,7 @@ // //===----------------------------------------------------------------------===// -/* Double Precision Multiply */ +// Double Precision Multiply #define A r1:0 #define AH r1 @@ -178,18 +178,17 @@ __hexagon_subdf3: .Ladd_ovf_unf: // Overflow or Denormal is possible // Good news: Underflow flag is not possible! - /* - * ATMP has 2's complement value - * - * EXPA has A's exponent, EXPB has EXPA-BIAS-60 - * - * Convert, extract exponent, add adjustment. - * If > 2046, overflow - * If <= 0, denormal - * - * Note that we've not done our zero check yet, so do that too - * - */ + + // ATMP has 2's complement value + // + // EXPA has A's exponent, EXPB has EXPA-BIAS-60 + // + // Convert, extract exponent, add adjustment. + // If > 2046, overflow + // If <= 0, denormal + // + // Note that we've not done our zero check yet, so do that too + { A = convert_d2df(ATMP) p0 = cmp.eq(ATMPH,#0) diff --git a/lib/builtins/hexagon/dfdiv.S b/lib/builtins/hexagon/dfdiv.S index 080651250..202965ec4 100644 --- a/lib/builtins/hexagon/dfdiv.S +++ b/lib/builtins/hexagon/dfdiv.S @@ -6,7 +6,7 @@ // //===----------------------------------------------------------------------===// -/* Double Precision Divide */ +// Double Precision Divide #define A r1:0 #define AH r1 @@ -236,10 +236,10 @@ __hexagon_divdf3: P_TMP = cmp.gt(EXPA,#0) if (P_TMP.new) jump:nt .Lpossible_unf // round up to normal possible... } - /* Underflow */ - /* We know what the infinite range exponent should be (EXPA) */ - /* Q is 2's complement, PROD is abs(Q) */ - /* Normalize Q, shift right, add a high bit, convert, change exponent */ + // Underflow + // We know what the infinite range exponent should be (EXPA) + // Q is 2's complement, PROD is abs(Q) + // Normalize Q, shift right, add a high bit, convert, change exponent #define FUDGE1 7 // how much to shift right #define FUDGE2 4 // how many guard/round to keep at lsbs @@ -286,8 +286,8 @@ __hexagon_divdf3: .Lpossible_unf: - /* If upper parts of Q were all F's, but abs(A) == 0x00100000_00000000, we rounded up to min_normal */ - /* The answer is correct, but we need to raise Underflow */ + // If upper parts of Q were all F's, but abs(A) == 0x00100000_00000000, we rounded up to min_normal + // The answer is correct, but we need to raise Underflow { B = extractu(A,#63,#0) TMPPAIR = combine(##0x00100000,#0) // min normal @@ -320,9 +320,9 @@ __hexagon_divdf3: } .Ldiv_ovf: - /* - * Raise Overflow, and choose the correct overflow value (saturated normal or infinity) - */ + + // Raise Overflow, and choose the correct overflow value (saturated normal or infinity) + { TMP = USR B = combine(##0x7fefffff,#-1) @@ -388,8 +388,8 @@ __hexagon_divdf3: if (!P_ZERO) jump .Ldiv_zero_result if (!P_INF) jump .Ldiv_inf_result } - /* Now we've narrowed it down to (de)normal / (de)normal */ - /* Set up A/EXPA B/EXPB and go back */ + // Now we've narrowed it down to (de)normal / (de)normal + // Set up A/EXPA B/EXPB and go back #undef P_ZERO #undef P_INF #define P_TMP2 p1 diff --git a/lib/builtins/hexagon/dffma.S b/lib/builtins/hexagon/dffma.S index 35256c693..c201d3d8b 100644 --- a/lib/builtins/hexagon/dffma.S +++ b/lib/builtins/hexagon/dffma.S @@ -9,7 +9,7 @@ #define Q6_ALIAS(TAG) .global __qdsp_##TAG ; .set __qdsp_##TAG, __hexagon_##TAG #define END(TAG) .size TAG,.-TAG -/* Double Precision Multiply */ +// Double Precision Multiply #define A r1:0 @@ -75,33 +75,29 @@ #define SR_ROUND_OFF 22 #endif - /* - * First, classify for normal values, and abort if abnormal - * - * Next, unpack mantissa into 0x1000_0000_0000_0000 + mant<<8 - * - * Since we know that the 2 MSBs of the H registers is zero, we should never carry - * the partial products that involve the H registers - * - * Try to buy X slots, at the expense of latency if needed - * - * We will have PP_HH with the upper bits of the product, PP_LL with the lower - * PP_HH can have a maximum of 0x03FF_FFFF_FFFF_FFFF or thereabouts - * PP_HH can have a minimum of 0x0100_0000_0000_0000 - * - * 0x0100_0000_0000_0000 has EXP of EXPA+EXPB-BIAS - * - * We need to align CTMP. - * If CTMP >> PP, convert PP to 64 bit with sticky, align CTMP, and follow normal add - * If CTMP << PP align CTMP and add 128 bits. Then compute sticky - * If CTMP ~= PP, align CTMP and add 128 bits. May have massive cancellation. - * - * Convert partial product and CTMP to 2's complement prior to addition - * - * After we add, we need to normalize into upper 64 bits, then compute sticky. - * - * - */ + // First, classify for normal values, and abort if abnormal + // + // Next, unpack mantissa into 0x1000_0000_0000_0000 + mant<<8 + // + // Since we know that the 2 MSBs of the H registers is zero, we should never carry + // the partial products that involve the H registers + // + // Try to buy X slots, at the expense of latency if needed + // + // We will have PP_HH with the upper bits of the product, PP_LL with the lower + // PP_HH can have a maximum of 0x03FF_FFFF_FFFF_FFFF or thereabouts + // PP_HH can have a minimum of 0x0100_0000_0000_0000 + // + // 0x0100_0000_0000_0000 has EXP of EXPA+EXPB-BIAS + // + // We need to align CTMP. + // If CTMP >> PP, convert PP to 64 bit with sticky, align CTMP, and follow normal add + // If CTMP << PP align CTMP and add 128 bits. Then compute sticky + // If CTMP ~= PP, align CTMP and add 128 bits. May have massive cancellation. + // + // Convert partial product and CTMP to 2's complement prior to addition + // + // After we add, we need to normalize into upper 64 bits, then compute sticky. .text .global __hexagon_fmadf4 @@ -181,14 +177,12 @@ fma: #define EXPCA r19:18 EXPC = extractu(CH,#EXPBITS,#HI_MANTBITS) } - /* PP_HH:PP_LL now has product */ - /* CTMP is negated */ - /* EXPA,B,C are extracted */ - /* - * We need to negate PP - * Since we will be adding with carry later, if we need to negate, - * just invert all bits now, which we can do conditionally and in parallel - */ + // PP_HH:PP_LL now has product + // CTMP is negated + // EXPA,B,C are extracted + // We need to negate PP + // Since we will be adding with carry later, if we need to negate, + // just invert all bits now, which we can do conditionally and in parallel #define PP_HH_TMP r15:14 #define PP_LL_TMP r7:6 { @@ -273,18 +267,16 @@ fma: PP_HH = add(CTMP,PP_HH,P_CARRY):carry TMP = #62 } - /* - * PP_HH:PP_LL now holds the sum - * We may need to normalize left, up to ??? bits. - * - * I think that if we have massive cancellation, the range we normalize by - * is still limited - */ + // PP_HH:PP_LL now holds the sum + // We may need to normalize left, up to ??? bits. + // + // I think that if we have massive cancellation, the range we normalize by + // is still limited { LEFTSHIFT = add(clb(PP_HH),#-2) if (!cmp.eq(LEFTSHIFT.new,TMP)) jump:t 1f // all sign bits? } - /* We had all sign bits, shift left by 62. */ + // We had all sign bits, shift left by 62. { CTMP = extractu(PP_LL,#62,#2) PP_LL = asl(PP_LL,#62) @@ -329,7 +321,7 @@ fma: if (!P_TMP) dealloc_return // not zero, return } .Ladd_yields_zero: - /* We had full cancellation. Return +/- zero (-0 when round-down) */ + // We had full cancellation. Return +/- zero (-0 when round-down) { TMP = USR A = #0 @@ -407,9 +399,9 @@ fma: EXPA = sub(#1+5,TMP) // Amount to right shift to denormalize p3 = cmp.gt(CTMPH,#-1) } - /* Underflow */ - /* We know that the infinte range exponent should be EXPA */ - /* CTMP is 2's complement, ATMP is abs(CTMP) */ + // Underflow + // We know that the infinte range exponent should be EXPA + // CTMP is 2's complement, ATMP is abs(CTMP) { EXPA = add(EXPA,EXPB) // how much to shift back right ATMP = asl(ATMP,EXPB) // shift left @@ -592,7 +584,7 @@ fma: p1 = dfclass(C,#0x08) if (p1.new) jump:nt .Lfma_inf_plus_inf } - /* A*B is +/- inf, C is finite. Return A */ + // A*B is +/- inf, C is finite. Return A { jumpr r31 } @@ -648,7 +640,7 @@ fma: if (!p0) A = C // If C is not zero, return C if (!p0) jumpr r31 } - /* B has correctly signed zero, C is also zero */ + // B has correctly signed zero, C is also zero .Lzero_plus_zero: { p0 = cmp.eq(B,C) // yes, scalar equals. +0++0 or -0+-0 @@ -673,8 +665,8 @@ fma: #define CTMP r11:10 .falign .Lfma_abnormal_c: - /* We know that AB is normal * normal */ - /* C is not normal: zero, subnormal, inf, or NaN. */ + // We know that AB is normal * normal + // C is not normal: zero, subnormal, inf, or NaN. { p0 = dfclass(C,#0x10) // is C NaN? if (p0.new) jump:nt .Lnan diff --git a/lib/builtins/hexagon/dfminmax.S b/lib/builtins/hexagon/dfminmax.S index 7b5c38085..44f031ba1 100644 --- a/lib/builtins/hexagon/dfminmax.S +++ b/lib/builtins/hexagon/dfminmax.S @@ -14,17 +14,14 @@ #define Q6_ALIAS(TAG) .global __qdsp_##TAG ; .set __qdsp_##TAG, __hexagon_##TAG #define END(TAG) .size TAG,.-TAG -/* - * Min and Max return A if B is NaN, or B if A is NaN - * Otherwise, they return the smaller or bigger value - * - * If values are equal, we want to favor -0.0 for min and +0.0 for max. - */ +// Min and Max return A if B is NaN, or B if A is NaN +// Otherwise, they return the smaller or bigger value +// +// If values are equal, we want to favor -0.0 for min and +0.0 for max. + +// Compares always return false for NaN +// if (isnan(A)) A = B; if (A > B) A = B will only trigger at most one of those options. -/* - * Compares always return false for NaN - * if (isnan(A)) A = B; if (A > B) A = B will only trigger at most one of those options. - */ .text .global __hexagon_mindf3 .global __hexagon_maxdf3 @@ -50,7 +47,7 @@ fmin: p2 = dfcmp.eq(A,B) // if A == B if (!p2.new) jumpr:t r31 } - /* A == B, return A|B to select -0.0 over 0.0 */ + // A == B, return A|B to select -0.0 over 0.0 { A = or(ATMP,B) jumpr r31 @@ -70,7 +67,7 @@ fmax: p2 = dfcmp.eq(A,B) if (!p2.new) jumpr:t r31 } - /* A == B, return A&B to select 0.0 over -0.0 */ + // A == B, return A&B to select 0.0 over -0.0 { A = and(ATMP,B) jumpr r31 diff --git a/lib/builtins/hexagon/dfmul.S b/lib/builtins/hexagon/dfmul.S index 3a33fc30a..e6f62c351 100644 --- a/lib/builtins/hexagon/dfmul.S +++ b/lib/builtins/hexagon/dfmul.S @@ -6,7 +6,7 @@ // //===----------------------------------------------------------------------===// -/* Double Precision Multiply */ +// Double Precision Multiply #define A r1:0 #define AH r1 #define AL r0 @@ -46,8 +46,8 @@ #define BIAS 1024 #define MANTISSA_TO_INT_BIAS 52 -/* Some constant to adjust normalization amount in error code */ -/* Amount to right shift the partial product to get to a denorm */ +// Some constant to adjust normalization amount in error code +// Amount to right shift the partial product to get to a denorm #define FUDGE 5 #define Q6_ALIAS(TAG) .global __qdsp_##TAG ; .set __qdsp_##TAG, __hexagon_##TAG @@ -79,10 +79,10 @@ __hexagon_muldf3: PP_ODD = mpyu(BTMPL,ATMPH) BTMP = insert(ONE,#2,#62) } - /* since we know that the MSB of the H registers is zero, we should never carry */ - /* H <= 2^31-1. L <= 2^32-1. Therefore, HL <= 2^63-2^32-2^31+1 */ - /* Adding 2 HLs, we get 2^64-3*2^32+2 maximum. */ - /* Therefore, we can add 3 2^32-1 values safely without carry. We only need one. */ + // since we know that the MSB of the H registers is zero, we should never carry + // H <= 2^31-1. L <= 2^32-1. Therefore, HL <= 2^63-2^32-2^31+1 + // Adding 2 HLs, we get 2^64-3*2^32+2 maximum. + // Therefore, we can add 3 2^32-1 values safely without carry. We only need one. { PP_LL = mpyu(ATMPL,BTMPL) PP_ODD += mpyu(ATMPL,BTMPH) @@ -98,10 +98,10 @@ __hexagon_muldf3: p1 = cmp.eq(PP_LL_L,#0) // 64 lsb's 0? p1 = cmp.eq(PP_ODD_L,#0) // 64 lsb's 0? } - /* - * PP_HH can have a maximum of 0x3FFF_FFFF_FFFF_FFFF or thereabouts - * PP_HH can have a minimum of 0x1000_0000_0000_0000 or so - */ + + // PP_HH can have a maximum of 0x3FFF_FFFF_FFFF_FFFF or thereabouts + // PP_HH can have a minimum of 0x1000_0000_0000_0000 or so + #undef PP_ODD #undef PP_ODD_H #undef PP_ODD_L @@ -136,15 +136,15 @@ __hexagon_muldf3: .falign .Lpossible_unf: - /* We end up with a positive exponent */ - /* But we may have rounded up to an exponent of 1. */ - /* If the exponent is 1, if we rounded up to it - * we need to also raise underflow - * Fortunately, this is pretty easy to detect, we must have +/- 0x0010_0000_0000_0000 - * And the PP should also have more than one bit set - */ - /* Note: ATMP should have abs(PP_HH) */ - /* Note: BTMPL should have 0x7FEFFFFF */ + // We end up with a positive exponent + // But we may have rounded up to an exponent of 1. + // If the exponent is 1, if we rounded up to it + // we need to also raise underflow + // Fortunately, this is pretty easy to detect, we must have +/- 0x0010_0000_0000_0000 + // And the PP should also have more than one bit set + // + // Note: ATMP should have abs(PP_HH) + // Note: BTMPL should have 0x7FEFFFFF { p0 = cmp.eq(AL,#0) p0 = bitsclr(AH,BTMPL) @@ -193,29 +193,25 @@ __hexagon_muldf3: BTMPH = sub(EXP0,BTMPH) TMP = #63 // max amount to shift } - /* Underflow */ - /* - * PP_HH has the partial product with sticky LSB. - * PP_HH can have a maximum of 0x3FFF_FFFF_FFFF_FFFF or thereabouts - * PP_HH can have a minimum of 0x1000_0000_0000_0000 or so - * The exponent of PP_HH is in EXP1, which is non-positive (0 or negative) - * That's the exponent that happens after the normalization - * - * EXP0 has the exponent that, when added to the normalized value, is out of range. - * - * Strategy: - * - * * Shift down bits, with sticky bit, such that the bits are aligned according - * to the LZ count and appropriate exponent, but not all the way to mantissa - * field, keep around the last few bits. - * * Put a 1 near the MSB - * * Check the LSBs for inexact; if inexact also set underflow - * * Convert [u]d2df -- will correctly round according to rounding mode - * * Replace exponent field with zero - * - * - */ - + // Underflow + // + // PP_HH has the partial product with sticky LSB. + // PP_HH can have a maximum of 0x3FFF_FFFF_FFFF_FFFF or thereabouts + // PP_HH can have a minimum of 0x1000_0000_0000_0000 or so + // The exponent of PP_HH is in EXP1, which is non-positive (0 or negative) + // That's the exponent that happens after the normalization + // + // EXP0 has the exponent that, when added to the normalized value, is out of range. + // + // Strategy: + // + // * Shift down bits, with sticky bit, such that the bits are aligned according + // to the LZ count and appropriate exponent, but not all the way to mantissa + // field, keep around the last few bits. + // * Put a 1 near the MSB + // * Check the LSBs for inexact; if inexact also set underflow + // * Convert [u]d2df -- will correctly round according to rounding mode + // * Replace exponent field with zero { BTMPL = #0 // offset for extract diff --git a/lib/builtins/hexagon/dfsqrt.S b/lib/builtins/hexagon/dfsqrt.S index 6d90e8fa8..f1435e868 100644 --- a/lib/builtins/hexagon/dfsqrt.S +++ b/lib/builtins/hexagon/dfsqrt.S @@ -6,7 +6,7 @@ // //===----------------------------------------------------------------------===// -/* Double Precision square root */ +// Double Precision square root #define EXP r28 @@ -168,9 +168,9 @@ __hexagon_sqrt: #define P_CARRY1 p2 #define P_CARRY2 p3 - /* Iteration 0 */ - /* Maybe we can save a cycle by starting with ERROR=asl(fracrad), then as we multiply */ - /* We can shift and subtract instead of shift and add? */ + // Iteration 0 + // Maybe we can save a cycle by starting with ERROR=asl(fracrad), then as we multiply + // We can shift and subtract instead of shift and add? { ERROR = asl(FRACRAD,#15) PROD = mpyu(ROOTHI,ROOTHI) @@ -193,7 +193,7 @@ __hexagon_sqrt: SHIFTAMT = add(SHIFTAMT,#16) ERROR = asl(FRACRAD,#31) // for next iter } - /* Iteration 1 */ + // Iteration 1 { PROD = mpyu(ROOTHI,ROOTHI) ERROR -= mpyu(ROOTHI,ROOTLO) // amount is 31, no shift needed @@ -213,7 +213,7 @@ __hexagon_sqrt: SHIFTAMT = add(SHIFTAMT,#16) ERROR = asl(FRACRAD,#47) // for next iter } - /* Iteration 2 */ + // Iteration 2 { PROD = mpyu(ROOTHI,ROOTHI) } @@ -244,7 +244,7 @@ __hexagon_sqrt: #undef RECIPEST #undef SHIFTAMT #define TWOROOT_LO r9:8 - /* Adjust Root */ + // Adjust Root { HL = mpyu(ROOTHI,ROOTLO) LL = mpyu(ROOTLO,ROOTLO) diff --git a/lib/builtins/i386/ashrdi3.S b/lib/builtins/i386/ashrdi3.S index 3c4a4239a..3cca4782a 100644 --- a/lib/builtins/i386/ashrdi3.S +++ b/lib/builtins/i386/ashrdi3.S @@ -23,10 +23,10 @@ DEFINE_COMPILERRT_FUNCTION(__ashrdi3) #endif psrlq %xmm2, %xmm0 // unsigned shift input by count - + testl %eax, %eax // check the sign-bit of the input jns 1f // early out for positive inputs - + // If the input is negative, we need to construct the shifted sign bit // to or into the result, as xmm does not have a signed right shift. pcmpeqb %xmm1, %xmm1 // -1ULL @@ -36,7 +36,7 @@ DEFINE_COMPILERRT_FUNCTION(__ashrdi3) psubq %xmm1, %xmm2 // 64 - count psllq %xmm2, %xmm1 // -1 << (64 - count) = leading sign bits por %xmm1, %xmm0 - + // Move the result back to the general purpose registers and return 1: movd %xmm0, %eax psrlq $32, %xmm0 @@ -52,14 +52,14 @@ DEFINE_COMPILERRT_FUNCTION(__ashrdi3) movl 12(%esp), %ecx // Load count movl 8(%esp), %edx // Load high movl 4(%esp), %eax // Load low - + testl $0x20, %ecx // If count >= 32 jnz 1f // goto 1 shrdl %cl, %edx, %eax // right shift low by count sarl %cl, %edx // right shift high by count ret - + 1: movl %edx, %eax // Move high to low sarl $31, %edx // clear high sarl %cl, %eax // shift low by count - 32 diff --git a/lib/builtins/i386/divdi3.S b/lib/builtins/i386/divdi3.S index 126b95c02..09e1e42eb 100644 --- a/lib/builtins/i386/divdi3.S +++ b/lib/builtins/i386/divdi3.S @@ -23,9 +23,9 @@ .balign 4 DEFINE_COMPILERRT_FUNCTION(__divdi3) -/* This is currently implemented by wrapping the unsigned divide up in an absolute - value, then restoring the correct sign at the end of the computation. This could - certainly be improved upon. */ +// This is currently implemented by wrapping the unsigned divide up in an absolute +// value, then restoring the correct sign at the end of the computation. This could +// certainly be improved upon. pushl %esi movl 20(%esp), %edx // high word of b @@ -39,7 +39,7 @@ DEFINE_COMPILERRT_FUNCTION(__divdi3) movl %edx, 20(%esp) movl %eax, 16(%esp) // store abs(b) back to stack movl %ecx, %esi // set aside sign of b - + movl 12(%esp), %edx // high word of b movl 8(%esp), %eax // low word of b movl %edx, %ecx @@ -56,11 +56,11 @@ DEFINE_COMPILERRT_FUNCTION(__divdi3) movl 24(%esp), %ebx // Find the index i of the leading bit in b. bsrl %ebx, %ecx // If the high word of b is zero, jump to jz 9f // the code to handle that special case [9]. - - /* High word of b is known to be non-zero on this branch */ - + + // High word of b is known to be non-zero on this branch + movl 20(%esp), %eax // Construct bhi, containing bits [1+i:32+i] of b - + shrl %cl, %eax // Practically, this means that bhi is given by: shrl %eax // notl %ecx // bhi = (high word of b) << (31 - i) | @@ -69,10 +69,10 @@ DEFINE_COMPILERRT_FUNCTION(__divdi3) movl 16(%esp), %edx // Load the high and low words of a, and jump movl 12(%esp), %eax // to [1] if the high word is larger than bhi cmpl %ebx, %edx // to avoid overflowing the upcoming divide. - jae 1f - - /* High word of a is greater than or equal to (b >> (1 + i)) on this branch */ - + jae 1f + + // High word of a is greater than or equal to (b >> (1 + i)) on this branch + divl %ebx // eax <-- qs, edx <-- r such that ahi:alo = bs*qs + r pushl %edi @@ -91,7 +91,7 @@ DEFINE_COMPILERRT_FUNCTION(__divdi3) sbbl $0, %edi // decrement q if remainder is negative xorl %edx, %edx movl %edi, %eax - + addl %esi, %eax // Restore correct sign to result adcl %esi, %edx xorl %esi, %eax @@ -102,8 +102,8 @@ DEFINE_COMPILERRT_FUNCTION(__divdi3) retl // Return -1: /* High word of a is greater than or equal to (b >> (1 + i)) on this branch */ - +1: // High word of a is greater than or equal to (b >> (1 + i)) on this branch + subl %ebx, %edx // subtract bhi from ahi so that divide will not divl %ebx // overflow, and find q and r such that // @@ -129,7 +129,7 @@ DEFINE_COMPILERRT_FUNCTION(__divdi3) sbbl $0, %edi // decrement q if remainder is negative xorl %edx, %edx movl %edi, %eax - + addl %esi, %eax // Restore correct sign to result adcl %esi, %edx xorl %esi, %eax @@ -139,8 +139,8 @@ DEFINE_COMPILERRT_FUNCTION(__divdi3) popl %esi retl // Return - -9: /* High word of b is zero on this branch */ + +9: // High word of b is zero on this branch movl 16(%esp), %eax // Find qhi and rhi such that movl 20(%esp), %ecx // @@ -150,7 +150,7 @@ DEFINE_COMPILERRT_FUNCTION(__divdi3) movl 12(%esp), %eax // Find qlo such that divl %ecx // movl %ebx, %edx // rhi:alo = qlo*b + rlo with 0 ≤ rlo < b - + addl %esi, %eax // Restore correct sign to result adcl %esi, %edx xorl %esi, %eax diff --git a/lib/builtins/i386/floatundisf.S b/lib/builtins/i386/floatundisf.S index b9ad5fa8f..44301719e 100644 --- a/lib/builtins/i386/floatundisf.S +++ b/lib/builtins/i386/floatundisf.S @@ -49,7 +49,7 @@ END_COMPILERRT_FUNCTION(__floatundisf) */ -/* branch-free, x87-free implementation - faster at the expense of code size */ +// branch-free, x87-free implementation - faster at the expense of code size #ifdef __i386__ @@ -79,7 +79,7 @@ DEFINE_COMPILERRT_FUNCTION(__floatundisf) movd 8(%esp), %xmm1 movd 4(%esp), %xmm0 punpckldq %xmm1, %xmm0 - + calll 0f 0: popl %ecx shrl %eax // high 31 bits of input as sint32 diff --git a/lib/builtins/i386/lshrdi3.S b/lib/builtins/i386/lshrdi3.S index 6041854c2..896633e85 100644 --- a/lib/builtins/i386/lshrdi3.S +++ b/lib/builtins/i386/lshrdi3.S @@ -42,14 +42,14 @@ DEFINE_COMPILERRT_FUNCTION(__lshrdi3) movl 12(%esp), %ecx // Load count movl 8(%esp), %edx // Load high movl 4(%esp), %eax // Load low - + testl $0x20, %ecx // If count >= 32 jnz 1f // goto 1 shrdl %cl, %edx, %eax // right shift low by count shrl %cl, %edx // right shift high by count ret - + 1: movl %edx, %eax // Move high to low xorl %edx, %edx // clear high shrl %cl, %eax // shift low by count - 32 diff --git a/lib/builtins/i386/moddi3.S b/lib/builtins/i386/moddi3.S index dd10b2b01..4580f20ea 100644 --- a/lib/builtins/i386/moddi3.S +++ b/lib/builtins/i386/moddi3.S @@ -24,8 +24,8 @@ .balign 4 DEFINE_COMPILERRT_FUNCTION(__moddi3) -/* This is currently implemented by wrapping the unsigned modulus up in an absolute - value. This could certainly be improved upon. */ +// This is currently implemented by wrapping the unsigned modulus up in an absolute +// value. This could certainly be improved upon. pushl %esi movl 20(%esp), %edx // high word of b @@ -38,7 +38,7 @@ DEFINE_COMPILERRT_FUNCTION(__moddi3) sbbl %ecx, %edx // EDX:EAX = abs(b) movl %edx, 20(%esp) movl %eax, 16(%esp) // store abs(b) back to stack - + movl 12(%esp), %edx // high word of b movl 8(%esp), %eax // low word of b movl %edx, %ecx @@ -55,11 +55,11 @@ DEFINE_COMPILERRT_FUNCTION(__moddi3) movl 24(%esp), %ebx // Find the index i of the leading bit in b. bsrl %ebx, %ecx // If the high word of b is zero, jump to jz 9f // the code to handle that special case [9]. - - /* High word of b is known to be non-zero on this branch */ - + + // High word of b is known to be non-zero on this branch + movl 20(%esp), %eax // Construct bhi, containing bits [1+i:32+i] of b - + shrl %cl, %eax // Practically, this means that bhi is given by: shrl %eax // notl %ecx // bhi = (high word of b) << (31 - i) | @@ -68,10 +68,10 @@ DEFINE_COMPILERRT_FUNCTION(__moddi3) movl 16(%esp), %edx // Load the high and low words of a, and jump movl 12(%esp), %eax // to [2] if the high word is larger than bhi cmpl %ebx, %edx // to avoid overflowing the upcoming divide. - jae 2f - - /* High word of a is greater than or equal to (b >> (1 + i)) on this branch */ - + jae 2f + + // High word of a is greater than or equal to (b >> (1 + i)) on this branch + divl %ebx // eax <-- qs, edx <-- r such that ahi:alo = bs*qs + r pushl %edi @@ -87,13 +87,13 @@ DEFINE_COMPILERRT_FUNCTION(__moddi3) movl 28(%esp), %eax imull %edi, %eax // q*bhi subl %eax, %ecx // ECX:EBX = a - q*b - + jnc 1f // if positive, this is the result. addl 24(%esp), %ebx // otherwise adcl 28(%esp), %ecx // ECX:EBX = a - (q-1)*b = result 1: movl %ebx, %eax movl %ecx, %edx - + addl %esi, %eax // Restore correct sign to result adcl %esi, %edx xorl %esi, %eax @@ -103,8 +103,8 @@ DEFINE_COMPILERRT_FUNCTION(__moddi3) popl %esi retl // Return -2: /* High word of a is greater than or equal to (b >> (1 + i)) on this branch */ - +2: // High word of a is greater than or equal to (b >> (1 + i)) on this branch + subl %ebx, %edx // subtract bhi from ahi so that divide will not divl %ebx // overflow, and find q and r such that // @@ -133,7 +133,7 @@ DEFINE_COMPILERRT_FUNCTION(__moddi3) adcl 28(%esp), %ecx // ECX:EBX = a - (q-1)*b = result 3: movl %ebx, %eax movl %ecx, %edx - + addl %esi, %eax // Restore correct sign to result adcl %esi, %edx xorl %esi, %eax @@ -142,8 +142,8 @@ DEFINE_COMPILERRT_FUNCTION(__moddi3) popl %ebx popl %esi retl // Return - -9: /* High word of b is zero on this branch */ + +9: // High word of b is zero on this branch movl 16(%esp), %eax // Find qhi and rhi such that movl 20(%esp), %ecx // diff --git a/lib/builtins/i386/muldi3.S b/lib/builtins/i386/muldi3.S index b8b5ade89..a898e2414 100644 --- a/lib/builtins/i386/muldi3.S +++ b/lib/builtins/i386/muldi3.S @@ -15,15 +15,15 @@ DEFINE_COMPILERRT_FUNCTION(__muldi3) movl 16(%esp), %eax // b.lo movl 12(%esp), %ecx // a.hi imull %eax, %ecx // b.lo * a.hi - + movl 8(%esp), %edx // a.lo movl 20(%esp), %ebx // b.hi imull %edx, %ebx // a.lo * b.hi - + mull %edx // EDX:EAX = a.lo * b.lo addl %ecx, %ebx // EBX = (a.lo*b.hi + a.hi*b.lo) addl %ebx, %edx - + popl %ebx retl END_COMPILERRT_FUNCTION(__muldi3) diff --git a/lib/builtins/i386/udivdi3.S b/lib/builtins/i386/udivdi3.S index 37841bf12..ca390245e 100644 --- a/lib/builtins/i386/udivdi3.S +++ b/lib/builtins/i386/udivdi3.S @@ -27,11 +27,11 @@ DEFINE_COMPILERRT_FUNCTION(__udivdi3) movl 20(%esp), %ebx // Find the index i of the leading bit in b. bsrl %ebx, %ecx // If the high word of b is zero, jump to jz 9f // the code to handle that special case [9]. - - /* High word of b is known to be non-zero on this branch */ - + + // High word of b is known to be non-zero on this branch + movl 16(%esp), %eax // Construct bhi, containing bits [1+i:32+i] of b - + shrl %cl, %eax // Practically, this means that bhi is given by: shrl %eax // notl %ecx // bhi = (high word of b) << (31 - i) | @@ -40,10 +40,10 @@ DEFINE_COMPILERRT_FUNCTION(__udivdi3) movl 12(%esp), %edx // Load the high and low words of a, and jump movl 8(%esp), %eax // to [1] if the high word is larger than bhi cmpl %ebx, %edx // to avoid overflowing the upcoming divide. - jae 1f - - /* High word of a is greater than or equal to (b >> (1 + i)) on this branch */ - + jae 1f + + // High word of a is greater than or equal to (b >> (1 + i)) on this branch + divl %ebx // eax <-- qs, edx <-- r such that ahi:alo = bs*qs + r pushl %edi @@ -67,8 +67,8 @@ DEFINE_COMPILERRT_FUNCTION(__udivdi3) retl -1: /* High word of a is greater than or equal to (b >> (1 + i)) on this branch */ - +1: // High word of a is greater than or equal to (b >> (1 + i)) on this branch + subl %ebx, %edx // subtract bhi from ahi so that divide will not divl %ebx // overflow, and find q and r such that // @@ -98,8 +98,8 @@ DEFINE_COMPILERRT_FUNCTION(__udivdi3) popl %ebx retl - -9: /* High word of b is zero on this branch */ + +9: // High word of b is zero on this branch movl 12(%esp), %eax // Find qhi and rhi such that movl 16(%esp), %ecx // diff --git a/lib/builtins/i386/umoddi3.S b/lib/builtins/i386/umoddi3.S index 0842d14e9..2717e7e5d 100644 --- a/lib/builtins/i386/umoddi3.S +++ b/lib/builtins/i386/umoddi3.S @@ -28,11 +28,11 @@ DEFINE_COMPILERRT_FUNCTION(__umoddi3) movl 20(%esp), %ebx // Find the index i of the leading bit in b. bsrl %ebx, %ecx // If the high word of b is zero, jump to jz 9f // the code to handle that special case [9]. - - /* High word of b is known to be non-zero on this branch */ - + + // High word of b is known to be non-zero on this branch + movl 16(%esp), %eax // Construct bhi, containing bits [1+i:32+i] of b - + shrl %cl, %eax // Practically, this means that bhi is given by: shrl %eax // notl %ecx // bhi = (high word of b) << (31 - i) | @@ -41,10 +41,10 @@ DEFINE_COMPILERRT_FUNCTION(__umoddi3) movl 12(%esp), %edx // Load the high and low words of a, and jump movl 8(%esp), %eax // to [2] if the high word is larger than bhi cmpl %ebx, %edx // to avoid overflowing the upcoming divide. - jae 2f - - /* High word of a is greater than or equal to (b >> (1 + i)) on this branch */ - + jae 2f + + // High word of a is greater than or equal to (b >> (1 + i)) on this branch + divl %ebx // eax <-- qs, edx <-- r such that ahi:alo = bs*qs + r pushl %edi @@ -60,20 +60,20 @@ DEFINE_COMPILERRT_FUNCTION(__umoddi3) movl 24(%esp), %eax imull %edi, %eax // q*bhi subl %eax, %ecx // ECX:EBX = a - q*b - + jnc 1f // if positive, this is the result. addl 20(%esp), %ebx // otherwise adcl 24(%esp), %ecx // ECX:EBX = a - (q-1)*b = result 1: movl %ebx, %eax movl %ecx, %edx - + popl %edi popl %ebx retl -2: /* High word of a is greater than or equal to (b >> (1 + i)) on this branch */ - +2: // High word of a is greater than or equal to (b >> (1 + i)) on this branch + subl %ebx, %edx // subtract bhi from ahi so that divide will not divl %ebx // overflow, and find q and r such that // @@ -102,14 +102,14 @@ DEFINE_COMPILERRT_FUNCTION(__umoddi3) adcl 24(%esp), %ecx // ECX:EBX = a - (q-1)*b = result 3: movl %ebx, %eax movl %ecx, %edx - + popl %edi popl %ebx retl - -9: /* High word of b is zero on this branch */ + +9: // High word of b is zero on this branch movl 12(%esp), %eax // Find qhi and rhi such that movl 16(%esp), %ecx // @@ -121,7 +121,7 @@ DEFINE_COMPILERRT_FUNCTION(__umoddi3) movl %edx, %eax // rhi:alo = qlo*b + rlo with 0 ≤ rlo < b popl %ebx // xorl %edx, %edx // and return 0:rlo - retl // + retl // END_COMPILERRT_FUNCTION(__umoddi3) #endif // __i386__ diff --git a/lib/builtins/int_endianness.h b/lib/builtins/int_endianness.h index eca5549b5..def046c34 100644 --- a/lib/builtins/int_endianness.h +++ b/lib/builtins/int_endianness.h @@ -1,16 +1,15 @@ -/* ===-- int_endianness.h - configuration header for compiler-rt ------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file is a configuration header for compiler-rt. - * This file is not part of the interface of this library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- int_endianness.h - configuration header for compiler-rt -----------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file is a configuration header for compiler-rt. +// This file is not part of the interface of this library. +// +//===----------------------------------------------------------------------===// #ifndef INT_ENDIANNESS_H #define INT_ENDIANNESS_H @@ -18,16 +17,16 @@ #if defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && \ defined(__ORDER_LITTLE_ENDIAN__) -/* Clang and GCC provide built-in endianness definitions. */ +// Clang and GCC provide built-in endianness definitions. #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ #define _YUGA_LITTLE_ENDIAN 0 #define _YUGA_BIG_ENDIAN 1 #elif __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ #define _YUGA_LITTLE_ENDIAN 1 #define _YUGA_BIG_ENDIAN 0 -#endif /* __BYTE_ORDER__ */ +#endif // __BYTE_ORDER__ -#else /* Compilers other than Clang or GCC. */ +#else // Compilers other than Clang or GCC. #if defined(__SVR4) && defined(__sun) #include <sys/byteorder.h> @@ -38,13 +37,13 @@ #elif defined(_LITTLE_ENDIAN) #define _YUGA_LITTLE_ENDIAN 1 #define _YUGA_BIG_ENDIAN 0 -#else /* !_LITTLE_ENDIAN */ +#else // !_LITTLE_ENDIAN #error "unknown endianness" -#endif /* !_LITTLE_ENDIAN */ +#endif // !_LITTLE_ENDIAN -#endif /* Solaris and AuroraUX. */ +#endif // Solaris and AuroraUX. -/* .. */ +// .. #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__) || \ defined(__minix) @@ -56,9 +55,9 @@ #elif _BYTE_ORDER == _LITTLE_ENDIAN #define _YUGA_LITTLE_ENDIAN 1 #define _YUGA_BIG_ENDIAN 0 -#endif /* _BYTE_ORDER */ +#endif // _BYTE_ORDER -#endif /* *BSD */ +#endif // *BSD #if defined(__OpenBSD__) #include <machine/endian.h> @@ -69,14 +68,14 @@ #elif _BYTE_ORDER == _LITTLE_ENDIAN #define _YUGA_LITTLE_ENDIAN 1 #define _YUGA_BIG_ENDIAN 0 -#endif /* _BYTE_ORDER */ +#endif // _BYTE_ORDER -#endif /* OpenBSD */ +#endif // OpenBSD -/* .. */ +// .. -/* Mac OSX has __BIG_ENDIAN__ or __LITTLE_ENDIAN__ automatically set by the - * compiler (at least with GCC) */ +// Mac OSX has __BIG_ENDIAN__ or __LITTLE_ENDIAN__ automatically set by the +// compiler (at least with GCC) #if defined(__APPLE__) || defined(__ellcc__) #ifdef __BIG_ENDIAN__ @@ -84,32 +83,32 @@ #define _YUGA_LITTLE_ENDIAN 0 #define _YUGA_BIG_ENDIAN 1 #endif -#endif /* __BIG_ENDIAN__ */ +#endif // __BIG_ENDIAN__ #ifdef __LITTLE_ENDIAN__ #if __LITTLE_ENDIAN__ #define _YUGA_LITTLE_ENDIAN 1 #define _YUGA_BIG_ENDIAN 0 #endif -#endif /* __LITTLE_ENDIAN__ */ +#endif // __LITTLE_ENDIAN__ -#endif /* Mac OSX */ +#endif // Mac OSX -/* .. */ +// .. #if defined(_WIN32) #define _YUGA_LITTLE_ENDIAN 1 #define _YUGA_BIG_ENDIAN 0 -#endif /* Windows */ +#endif // Windows -#endif /* Clang or GCC. */ +#endif // Clang or GCC. -/* . */ +// . #if !defined(_YUGA_LITTLE_ENDIAN) || !defined(_YUGA_BIG_ENDIAN) #error Unable to determine endian -#endif /* Check we found an endianness correctly. */ +#endif // Check we found an endianness correctly. -#endif /* INT_ENDIANNESS_H */ +#endif // INT_ENDIANNESS_H diff --git a/lib/builtins/int_lib.h b/lib/builtins/int_lib.h index 4ea689df1..15d825588 100644 --- a/lib/builtins/int_lib.h +++ b/lib/builtins/int_lib.h @@ -1,23 +1,22 @@ -/* ===-- int_lib.h - configuration header for compiler-rt -----------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file is a configuration header for compiler-rt. - * This file is not part of the interface of this library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- int_lib.h - configuration header for compiler-rt -----------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file is a configuration header for compiler-rt. +// This file is not part of the interface of this library. +// +//===----------------------------------------------------------------------===// #ifndef INT_LIB_H #define INT_LIB_H -/* Assumption: Signed integral is 2's complement. */ -/* Assumption: Right shift of signed negative is arithmetic shift. */ -/* Assumption: Endianness is little or big (not mixed). */ +// Assumption: Signed integral is 2's complement. +// Assumption: Right shift of signed negative is arithmetic shift. +// Assumption: Endianness is little or big (not mixed). #if defined(__ELF__) #define FNALIAS(alias_name, original_name) \ @@ -30,7 +29,7 @@ _Pragma("GCC error(\"alias unsupported on this file format\")") #endif -/* ABI macro definitions */ +// ABI macro definitions #if __ARM_EABI__ #ifdef COMPILER_RT_ARMHF_TARGET @@ -57,25 +56,25 @@ #endif #if defined(__NetBSD__) && (defined(_KERNEL) || defined(_STANDALONE)) -/* - * Kernel and boot environment can't use normal headers, - * so use the equivalent system headers. - */ +// +// Kernel and boot environment can't use normal headers, +// so use the equivalent system headers. +// #include <machine/limits.h> #include <sys/stdint.h> #include <sys/types.h> #else -/* Include the standard compiler builtin headers we use functionality from. */ +// Include the standard compiler builtin headers we use functionality from. #include <float.h> #include <limits.h> #include <stdbool.h> #include <stdint.h> #endif -/* Include the commonly used internal type definitions. */ +// Include the commonly used internal type definitions. #include "int_types.h" -/* Include internal utility function declarations. */ +// Include internal utility function declarations. #include "int_util.h" COMPILER_RT_ABI si_int __paritysi2(si_int a); @@ -92,7 +91,7 @@ COMPILER_RT_ABI si_int __clzti2(ti_int a); COMPILER_RT_ABI tu_int __udivmodti4(tu_int a, tu_int b, tu_int *rem); #endif -/* Definitions for builtins unavailable on MSVC */ +// Definitions for builtins unavailable on MSVC #if defined(_MSC_VER) && !defined(__clang__) #include <intrin.h> @@ -130,6 +129,6 @@ uint32_t __inline __builtin_clzll(uint64_t value) { #endif #define __builtin_clzl __builtin_clzll -#endif /* defined(_MSC_VER) && !defined(__clang__) */ +#endif // defined(_MSC_VER) && !defined(__clang__) -#endif /* INT_LIB_H */ +#endif // INT_LIB_H diff --git a/lib/builtins/int_math.h b/lib/builtins/int_math.h index 7193a5d65..58d8990f3 100644 --- a/lib/builtins/int_math.h +++ b/lib/builtins/int_math.h @@ -1,21 +1,20 @@ -/* ===-- int_math.h - internal math inlines ---------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===-----------------------------------------------------------------------=== - * - * This file is not part of the interface of this library. - * - * This file defines substitutes for the libm functions used in some of the - * compiler-rt implementations, defined in such a way that there is not a direct - * dependency on libm or math.h. Instead, we use the compiler builtin versions - * where available. This reduces our dependencies on the system SDK by foisting - * the responsibility onto the compiler. - * - * ===-----------------------------------------------------------------------=== - */ +//===-- int_math.h - internal math inlines --------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file is not part of the interface of this library. +// +// This file defines substitutes for the libm functions used in some of the +// compiler-rt implementations, defined in such a way that there is not a direct +// dependency on libm or math.h. Instead, we use the compiler builtin versions +// where available. This reduces our dependencies on the system SDK by foisting +// the responsibility onto the compiler. +// +//===----------------------------------------------------------------------===// #ifndef INT_MATH_H #define INT_MATH_H @@ -40,10 +39,9 @@ #define crt_isinf(x) !_finite((x)) #define crt_isnan(x) _isnan((x)) #else -/* Define crt_isfinite in terms of the builtin if available, otherwise provide - * an alternate version in terms of our other functions. This supports some - * versions of GCC which didn't have __builtin_isfinite. - */ +// Define crt_isfinite in terms of the builtin if available, otherwise provide +// an alternate version in terms of our other functions. This supports some +// versions of GCC which didn't have __builtin_isfinite. #if __has_builtin(__builtin_isfinite) #define crt_isfinite(x) __builtin_isfinite((x)) #elif defined(__GNUC__) @@ -54,10 +52,10 @@ })) #else #error "Do not know how to check for infinity" -#endif /* __has_builtin(__builtin_isfinite) */ +#endif // __has_builtin(__builtin_isfinite) #define crt_isinf(x) __builtin_isinf((x)) #define crt_isnan(x) __builtin_isnan((x)) -#endif /* _MSC_VER */ +#endif // _MSC_VER #if defined(_MSC_VER) && !defined(__clang__) #define crt_copysign(x, y) copysign((x), (y)) @@ -105,4 +103,4 @@ #define crt_scalbnl(x, y) __builtin_scalbnl((x), (y)) #endif -#endif /* INT_MATH_H */ +#endif // INT_MATH_H diff --git a/lib/builtins/int_types.h b/lib/builtins/int_types.h index 4db6dfce6..f89220d54 100644 --- a/lib/builtins/int_types.h +++ b/lib/builtins/int_types.h @@ -1,25 +1,24 @@ -/* ===-- int_lib.h - configuration header for compiler-rt -----------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file is not part of the interface of this library. - * - * This file defines various standard types, most importantly a number of unions - * used to access parts of larger types. - * - * ===----------------------------------------------------------------------=== - */ +//===-- int_lib.h - configuration header for compiler-rt -----------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file is not part of the interface of this library. +// +// This file defines various standard types, most importantly a number of unions +// used to access parts of larger types. +// +//===----------------------------------------------------------------------===// #ifndef INT_TYPES_H #define INT_TYPES_H #include "int_endianness.h" -/* si_int is defined in Linux sysroot's asm-generic/siginfo.h */ +// si_int is defined in Linux sysroot's asm-generic/siginfo.h #ifdef si_int #undef si_int #endif @@ -38,7 +37,7 @@ typedef union { #else si_int high; su_int low; -#endif /* _YUGA_LITTLE_ENDIAN */ +#endif // _YUGA_LITTLE_ENDIAN } s; } dwords; @@ -51,7 +50,7 @@ typedef union { #else su_int high; su_int low; -#endif /* _YUGA_LITTLE_ENDIAN */ +#endif // _YUGA_LITTLE_ENDIAN } s; } udwords; @@ -60,10 +59,9 @@ typedef union { #define CRT_HAS_128BIT #endif -/* MSVC doesn't have a working 128bit integer type. Users should really compile - * compiler-rt with clang, but if they happen to be doing a standalone build for - * asan or something else, disable the 128 bit parts so things sort of work. - */ +// MSVC doesn't have a working 128bit integer type. Users should really compile +// compiler-rt with clang, but if they happen to be doing a standalone build for +// asan or something else, disable the 128 bit parts so things sort of work. #if defined(_MSC_VER) && !defined(__clang__) #undef CRT_HAS_128BIT #endif @@ -81,7 +79,7 @@ typedef union { #else di_int high; du_int low; -#endif /* _YUGA_LITTLE_ENDIAN */ +#endif // _YUGA_LITTLE_ENDIAN } s; } twords; @@ -94,7 +92,7 @@ typedef union { #else du_int high; du_int low; -#endif /* _YUGA_LITTLE_ENDIAN */ +#endif // _YUGA_LITTLE_ENDIAN } s; } utwords; @@ -112,7 +110,7 @@ static __inline tu_int make_tu(du_int h, du_int l) { return r.all; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT typedef union { su_int u; @@ -131,14 +129,13 @@ typedef struct { #else udwords high; udwords low; -#endif /* _YUGA_LITTLE_ENDIAN */ +#endif // _YUGA_LITTLE_ENDIAN } uqwords; -/* Check if the target supports 80 bit extended precision long doubles. - * Notably, on x86 Windows, MSVC only provides a 64-bit long double, but GCC - * still makes it 80 bits. Clang will match whatever compiler it is trying to - * be compatible with. - */ +// Check if the target supports 80 bit extended precision long doubles. +// Notably, on x86 Windows, MSVC only provides a 64-bit long double, but GCC +// still makes it 80 bits. Clang will match whatever compiler it is trying to +// be compatible with. #if ((defined(__i386__) || defined(__x86_64__)) && !defined(_MSC_VER)) || \ defined(__m68k__) || defined(__ia64__) #define HAS_80_BIT_LONG_DOUBLE 1 @@ -174,4 +171,4 @@ typedef struct { #define COMPLEX_REAL(x) (x).real #define COMPLEX_IMAGINARY(x) (x).imaginary #endif -#endif /* INT_TYPES_H */ +#endif // INT_TYPES_H diff --git a/lib/builtins/int_util.c b/lib/builtins/int_util.c index 48216c49c..226a6e934 100644 --- a/lib/builtins/int_util.c +++ b/lib/builtins/int_util.c @@ -1,23 +1,21 @@ -/* ===-- int_util.c - Implement internal utilities --------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- int_util.c - Implement internal utilities -------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* NOTE: The definitions in this file are declared weak because we clients to be - * able to arbitrarily package individual functions into separate .a files. If - * we did not declare these weak, some link situations might end up seeing - * duplicate strong definitions of the same symbol. - * - * We can't use this solution for kernel use (which may not support weak), but - * currently expect that when built for kernel use all the functionality is - * packaged into a single library. - */ +// NOTE: The definitions in this file are declared weak because we clients to be +// able to arbitrarily package individual functions into separate .a files. If +// we did not declare these weak, some link situations might end up seeing +// duplicate strong definitions of the same symbol. +// +// We can't use this solution for kernel use (which may not support weak), but +// currently expect that when built for kernel use all the functionality is +// packaged into a single library. #ifdef KERNEL_USE @@ -31,7 +29,7 @@ void __compilerrt_abort_impl(const char *file, int line, const char *function) { #elif __APPLE__ -/* from libSystem.dylib */ +// from libSystem.dylib NORETURN extern void __assert_rtn(const char *func, const char *file, int line, const char *message); @@ -55,7 +53,7 @@ void __compilerrt_abort_impl(const char *file, int line, const char *function) { #else -/* Get the system definition of abort() */ +// Get the system definition of abort() #include <stdlib.h> #ifndef _WIN32 diff --git a/lib/builtins/int_util.h b/lib/builtins/int_util.h index 846393081..5fbdfb57c 100644 --- a/lib/builtins/int_util.h +++ b/lib/builtins/int_util.h @@ -1,24 +1,23 @@ -/* ===-- int_util.h - internal utility functions ----------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===-----------------------------------------------------------------------=== - * - * This file is not part of the interface of this library. - * - * This file defines non-inline utilities which are available for use in the - * library. The function definitions themselves are all contained in int_util.c - * which will always be compiled into any compiler-rt library. - * - * ===-----------------------------------------------------------------------=== - */ +//===-- int_util.h - internal utility functions ---------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file is not part of the interface of this library. +// +// This file defines non-inline utilities which are available for use in the +// library. The function definitions themselves are all contained in int_util.c +// which will always be compiled into any compiler-rt library. +// +//===----------------------------------------------------------------------===// #ifndef INT_UTIL_H #define INT_UTIL_H -/** \brief Trigger a program abort (or panic for kernel code). */ +/// \brief Trigger a program abort (or panic for kernel code). #define compilerrt_abort() __compilerrt_abort_impl(__FILE__, __LINE__, __func__) NORETURN void __compilerrt_abort_impl(const char *file, int line, @@ -29,4 +28,4 @@ NORETURN void __compilerrt_abort_impl(const char *file, int line, #define COMPILE_TIME_ASSERT2(expr, cnt) \ typedef char ct_assert_##cnt[(expr) ? 1 : -1] UNUSED -#endif /* INT_UTIL_H */ +#endif // INT_UTIL_H diff --git a/lib/builtins/lshrdi3.c b/lib/builtins/lshrdi3.c index 3d5c5b360..8df458cb9 100644 --- a/lib/builtins/lshrdi3.c +++ b/lib/builtins/lshrdi3.c @@ -1,33 +1,30 @@ -/* ===-- lshrdi3.c - Implement __lshrdi3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __lshrdi3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- lshrdi3.c - Implement __lshrdi3 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __lshrdi3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: logical a >> b */ +// Returns: logical a >> b -/* Precondition: 0 <= b < bits_in_dword */ +// Precondition: 0 <= b < bits_in_dword COMPILER_RT_ABI di_int __lshrdi3(di_int a, si_int b) { const int bits_in_word = (int)(sizeof(si_int) * CHAR_BIT); udwords input; udwords result; input.all = a; - if (b & bits_in_word) /* bits_in_word <= b < bits_in_dword */ - { + if (b & bits_in_word) /* bits_in_word <= b < bits_in_dword */ { result.s.high = 0; result.s.low = input.s.high >> (b - bits_in_word); - } else /* 0 <= b < bits_in_word */ - { + } else /* 0 <= b < bits_in_word */ { if (b == 0) return a; result.s.high = input.s.high >> b; diff --git a/lib/builtins/lshrti3.c b/lib/builtins/lshrti3.c index b06c786f2..d00a22095 100644 --- a/lib/builtins/lshrti3.c +++ b/lib/builtins/lshrti3.c @@ -1,35 +1,32 @@ -/* ===-- lshrti3.c - Implement __lshrti3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __lshrti3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- lshrti3.c - Implement __lshrti3 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __lshrti3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: logical a >> b */ +// Returns: logical a >> b -/* Precondition: 0 <= b < bits_in_tword */ +// Precondition: 0 <= b < bits_in_tword COMPILER_RT_ABI ti_int __lshrti3(ti_int a, si_int b) { const int bits_in_dword = (int)(sizeof(di_int) * CHAR_BIT); utwords input; utwords result; input.all = a; - if (b & bits_in_dword) /* bits_in_dword <= b < bits_in_tword */ - { + if (b & bits_in_dword) /* bits_in_dword <= b < bits_in_tword */ { result.s.high = 0; result.s.low = input.s.high >> (b - bits_in_dword); - } else /* 0 <= b < bits_in_dword */ - { + } else /* 0 <= b < bits_in_dword */ { if (b == 0) return a; result.s.high = input.s.high >> b; @@ -38,4 +35,4 @@ COMPILER_RT_ABI ti_int __lshrti3(ti_int a, si_int b) { return result.all; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/mingw_fixfloat.c b/lib/builtins/mingw_fixfloat.c index f2c918755..945be9d43 100644 --- a/lib/builtins/mingw_fixfloat.c +++ b/lib/builtins/mingw_fixfloat.c @@ -1,11 +1,10 @@ -/* ===-- mingw_fixfloat.c - Wrap int/float conversions for arm/windows -----=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===-- mingw_fixfloat.c - Wrap int/float conversions for arm/windows -----===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #include "int_lib.h" diff --git a/lib/builtins/moddi3.c b/lib/builtins/moddi3.c index a2e7e72bd..92b099607 100644 --- a/lib/builtins/moddi3.c +++ b/lib/builtins/moddi3.c @@ -1,27 +1,26 @@ -/*===-- moddi3.c - Implement __moddi3 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __moddi3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- moddi3.c - Implement __moddi3 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __moddi3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a % b */ +// Returns: a % b COMPILER_RT_ABI di_int __moddi3(di_int a, di_int b) { const int bits_in_dword_m1 = (int)(sizeof(di_int) * CHAR_BIT) - 1; - di_int s = b >> bits_in_dword_m1; /* s = b < 0 ? -1 : 0 */ - b = (b ^ s) - s; /* negate if s == -1 */ - s = a >> bits_in_dword_m1; /* s = a < 0 ? -1 : 0 */ - a = (a ^ s) - s; /* negate if s == -1 */ + di_int s = b >> bits_in_dword_m1; // s = b < 0 ? -1 : 0 + b = (b ^ s) - s; // negate if s == -1 + s = a >> bits_in_dword_m1; // s = a < 0 ? -1 : 0 + a = (a ^ s) - s; // negate if s == -1 du_int r; __udivmoddi4(a, b, &r); - return ((di_int)r ^ s) - s; /* negate if s == -1 */ + return ((di_int)r ^ s) - s; // negate if s == -1 } diff --git a/lib/builtins/modsi3.c b/lib/builtins/modsi3.c index ed7cac5cf..e443b8a59 100644 --- a/lib/builtins/modsi3.c +++ b/lib/builtins/modsi3.c @@ -1,19 +1,18 @@ -/* ===-- modsi3.c - Implement __modsi3 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __modsi3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- modsi3.c - Implement __modsi3 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __modsi3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a % b */ +// Returns: a % b COMPILER_RT_ABI si_int __modsi3(si_int a, si_int b) { return a - __divsi3(a, b) * b; diff --git a/lib/builtins/modti3.c b/lib/builtins/modti3.c index 02bd62a80..d11fe220b 100644 --- a/lib/builtins/modti3.c +++ b/lib/builtins/modti3.c @@ -1,31 +1,30 @@ -/* ===-- modti3.c - Implement __modti3 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __modti3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- modti3.c - Implement __modti3 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __modti3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/*Returns: a % b */ +// Returns: a % b COMPILER_RT_ABI ti_int __modti3(ti_int a, ti_int b) { const int bits_in_tword_m1 = (int)(sizeof(ti_int) * CHAR_BIT) - 1; - ti_int s = b >> bits_in_tword_m1; /* s = b < 0 ? -1 : 0 */ - b = (b ^ s) - s; /* negate if s == -1 */ - s = a >> bits_in_tword_m1; /* s = a < 0 ? -1 : 0 */ - a = (a ^ s) - s; /* negate if s == -1 */ + ti_int s = b >> bits_in_tword_m1; // s = b < 0 ? -1 : 0 + b = (b ^ s) - s; // negate if s == -1 + s = a >> bits_in_tword_m1; // s = a < 0 ? -1 : 0 + a = (a ^ s) - s; // negate if s == -1 tu_int r; __udivmodti4(a, b, &r); - return ((ti_int)r ^ s) - s; /* negate if s == -1 */ + return ((ti_int)r ^ s) - s; // negate if s == -1 } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/muldc3.c b/lib/builtins/muldc3.c index ad3ef6320..0ea7041c3 100644 --- a/lib/builtins/muldc3.c +++ b/lib/builtins/muldc3.c @@ -1,20 +1,19 @@ -/* ===-- muldc3.c - Implement __muldc3 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __muldc3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- muldc3.c - Implement __muldc3 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __muldc3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #include "int_math.h" -/* Returns: the product of a + ib and c + id */ +// Returns: the product of a + ib and c + id COMPILER_RT_ABI Dcomplex __muldc3(double __a, double __b, double __c, double __d) { diff --git a/lib/builtins/muldi3.c b/lib/builtins/muldi3.c index dd7c905d4..6737164ca 100644 --- a/lib/builtins/muldi3.c +++ b/lib/builtins/muldi3.c @@ -1,19 +1,18 @@ -/* ===-- muldi3.c - Implement __muldi3 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __muldi3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- muldi3.c - Implement __muldi3 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __muldi3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a * b */ +// Returns: a * b static di_int __muldsi3(su_int a, su_int b) { dwords r; @@ -34,7 +33,7 @@ static di_int __muldsi3(su_int a, su_int b) { return r.all; } -/* Returns: a * b */ +// Returns: a * b COMPILER_RT_ABI di_int __muldi3(di_int a, di_int b) { dwords x; diff --git a/lib/builtins/mulodi4.c b/lib/builtins/mulodi4.c index 5fefe52ca..23f5571ac 100644 --- a/lib/builtins/mulodi4.c +++ b/lib/builtins/mulodi4.c @@ -1,21 +1,20 @@ -/*===-- mulodi4.c - Implement __mulodi4 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __mulodi4 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- mulodi4.c - Implement __mulodi4 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __mulodi4 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a * b */ +// Returns: a * b -/* Effects: sets *overflow to 1 if a * b overflows */ +// Effects: sets *overflow to 1 if a * b overflows COMPILER_RT_ABI di_int __mulodi4(di_int a, di_int b, int *overflow) { const int N = (int)(sizeof(di_int) * CHAR_BIT); diff --git a/lib/builtins/mulosi4.c b/lib/builtins/mulosi4.c index 7db178ac0..fea431129 100644 --- a/lib/builtins/mulosi4.c +++ b/lib/builtins/mulosi4.c @@ -1,21 +1,20 @@ -/*===-- mulosi4.c - Implement __mulosi4 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __mulosi4 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- mulosi4.c - Implement __mulosi4 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __mulosi4 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a * b */ +// Returns: a * b -/* Effects: sets *overflow to 1 if a * b overflows */ +// Effects: sets *overflow to 1 if a * b overflows COMPILER_RT_ABI si_int __mulosi4(si_int a, si_int b, int *overflow) { const int N = (int)(sizeof(si_int) * CHAR_BIT); diff --git a/lib/builtins/muloti4.c b/lib/builtins/muloti4.c index 7dc62b22b..9bdd5b649 100644 --- a/lib/builtins/muloti4.c +++ b/lib/builtins/muloti4.c @@ -1,23 +1,22 @@ -/*===-- muloti4.c - Implement __muloti4 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __muloti4 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- muloti4.c - Implement __muloti4 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __muloti4 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: a * b */ +// Returns: a * b -/* Effects: sets *overflow to 1 if a * b overflows */ +// Effects: sets *overflow to 1 if a * b overflows COMPILER_RT_ABI ti_int __muloti4(ti_int a, ti_int b, int *overflow) { const int N = (int)(sizeof(ti_int) * CHAR_BIT); @@ -51,4 +50,4 @@ COMPILER_RT_ABI ti_int __muloti4(ti_int a, ti_int b, int *overflow) { return result; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/mulsc3.c b/lib/builtins/mulsc3.c index 7f08e815c..60653174e 100644 --- a/lib/builtins/mulsc3.c +++ b/lib/builtins/mulsc3.c @@ -1,20 +1,19 @@ -/* ===-- mulsc3.c - Implement __mulsc3 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __mulsc3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- mulsc3.c - Implement __mulsc3 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __mulsc3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #include "int_math.h" -/* Returns: the product of a + ib and c + id */ +// Returns: the product of a + ib and c + id COMPILER_RT_ABI Fcomplex __mulsc3(float __a, float __b, float __c, float __d) { float __ac = __a * __c; diff --git a/lib/builtins/multc3.c b/lib/builtins/multc3.c index 140eef4d2..bb7f6aabf 100644 --- a/lib/builtins/multc3.c +++ b/lib/builtins/multc3.c @@ -1,20 +1,19 @@ -/* ===-- multc3.c - Implement __multc3 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __multc3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- multc3.c - Implement __multc3 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __multc3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #include "int_math.h" -/* Returns: the product of a + ib and c + id */ +// Returns: the product of a + ib and c + id COMPILER_RT_ABI long double _Complex __multc3(long double a, long double b, long double c, long double d) { diff --git a/lib/builtins/multi3.c b/lib/builtins/multi3.c index e214b231e..d9d8b59cd 100644 --- a/lib/builtins/multi3.c +++ b/lib/builtins/multi3.c @@ -1,21 +1,20 @@ -/* ===-- multi3.c - Implement __multi3 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - - * This file implements __multi3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- multi3.c - Implement __multi3 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __multi3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: a * b */ +// Returns: a * b static ti_int __mulddi3(du_int a, du_int b) { twords r; @@ -36,7 +35,7 @@ static ti_int __mulddi3(du_int a, du_int b) { return r.all; } -/* Returns: a * b */ +// Returns: a * b COMPILER_RT_ABI ti_int __multi3(ti_int a, ti_int b) { twords x; @@ -49,4 +48,4 @@ COMPILER_RT_ABI ti_int __multi3(ti_int a, ti_int b) { return r.all; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/mulvdi3.c b/lib/builtins/mulvdi3.c index 1ceed68a1..cecc97ccf 100644 --- a/lib/builtins/mulvdi3.c +++ b/lib/builtins/mulvdi3.c @@ -1,21 +1,20 @@ -/*===-- mulvdi3.c - Implement __mulvdi3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __mulvdi3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- mulvdi3.c - Implement __mulvdi3 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __mulvdi3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a * b */ +// Returns: a * b -/* Effects: aborts if a * b overflows */ +// Effects: aborts if a * b overflows COMPILER_RT_ABI di_int __mulvdi3(di_int a, di_int b) { const int N = (int)(sizeof(di_int) * CHAR_BIT); diff --git a/lib/builtins/mulvsi3.c b/lib/builtins/mulvsi3.c index e974613e4..0d6b18ad0 100644 --- a/lib/builtins/mulvsi3.c +++ b/lib/builtins/mulvsi3.c @@ -1,21 +1,20 @@ -/* ===-- mulvsi3.c - Implement __mulvsi3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __mulvsi3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- mulvsi3.c - Implement __mulvsi3 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __mulvsi3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a * b */ +// Returns: a * b -/* Effects: aborts if a * b overflows */ +// Effects: aborts if a * b overflows COMPILER_RT_ABI si_int __mulvsi3(si_int a, si_int b) { const int N = (int)(sizeof(si_int) * CHAR_BIT); diff --git a/lib/builtins/mulvti3.c b/lib/builtins/mulvti3.c index b8033d5d3..03963a0ca 100644 --- a/lib/builtins/mulvti3.c +++ b/lib/builtins/mulvti3.c @@ -1,23 +1,22 @@ -/* ===-- mulvti3.c - Implement __mulvti3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __mulvti3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- mulvti3.c - Implement __mulvti3 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __mulvti3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: a * b */ +// Returns: a * b -/* Effects: aborts if a * b overflows */ +// Effects: aborts if a * b overflows COMPILER_RT_ABI ti_int __mulvti3(ti_int a, ti_int b) { const int N = (int)(sizeof(ti_int) * CHAR_BIT); @@ -49,4 +48,4 @@ COMPILER_RT_ABI ti_int __mulvti3(ti_int a, ti_int b) { return a * b; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/mulxc3.c b/lib/builtins/mulxc3.c index d9b561066..2f7f14c28 100644 --- a/lib/builtins/mulxc3.c +++ b/lib/builtins/mulxc3.c @@ -1,22 +1,21 @@ -/* ===-- mulxc3.c - Implement __mulxc3 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __mulxc3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- mulxc3.c - Implement __mulxc3 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __mulxc3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #if !_ARCH_PPC #include "int_lib.h" #include "int_math.h" -/* Returns: the product of a + ib and c + id */ +// Returns: the product of a + ib and c + id COMPILER_RT_ABI Lcomplex __mulxc3(long double __a, long double __b, long double __c, long double __d) { diff --git a/lib/builtins/negdi2.c b/lib/builtins/negdi2.c index f6bc3ee56..5a525d4b0 100644 --- a/lib/builtins/negdi2.c +++ b/lib/builtins/negdi2.c @@ -1,23 +1,21 @@ -/* ===-- negdi2.c - Implement __negdi2 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __negdi2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- negdi2.c - Implement __negdi2 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __negdi2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: -a */ +// Returns: -a COMPILER_RT_ABI di_int __negdi2(di_int a) { - /* Note: this routine is here for API compatibility; any sane compiler - * should expand it inline. - */ + // Note: this routine is here for API compatibility; any sane compiler + // should expand it inline. return -a; } diff --git a/lib/builtins/negti2.c b/lib/builtins/negti2.c index 789699a10..d52ba4e13 100644 --- a/lib/builtins/negti2.c +++ b/lib/builtins/negti2.c @@ -1,27 +1,25 @@ -/* ===-- negti2.c - Implement __negti2 -------------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __negti2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- negti2.c - Implement __negti2 -------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __negti2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: -a */ +// Returns: -a COMPILER_RT_ABI ti_int __negti2(ti_int a) { - /* Note: this routine is here for API compatibility; any sane compiler - * should expand it inline. - */ + // Note: this routine is here for API compatibility; any sane compiler + // should expand it inline. return -a; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/negvdi2.c b/lib/builtins/negvdi2.c index 6c4edb954..5c52b3ec2 100644 --- a/lib/builtins/negvdi2.c +++ b/lib/builtins/negvdi2.c @@ -1,21 +1,20 @@ -/* ===-- negvdi2.c - Implement __negvdi2 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __negvdi2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- negvdi2.c - Implement __negvdi2 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __negvdi2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: -a */ +// Returns: -a -/* Effects: aborts if -a overflows */ +// Effects: aborts if -a overflows COMPILER_RT_ABI di_int __negvdi2(di_int a) { const di_int MIN = (di_int)1 << ((int)(sizeof(di_int) * CHAR_BIT) - 1); diff --git a/lib/builtins/negvsi2.c b/lib/builtins/negvsi2.c index e6afda205..cccdee6dc 100644 --- a/lib/builtins/negvsi2.c +++ b/lib/builtins/negvsi2.c @@ -1,21 +1,20 @@ -/* ===-- negvsi2.c - Implement __negvsi2 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __negvsi2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- negvsi2.c - Implement __negvsi2 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __negvsi2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: -a */ +// Returns: -a -/* Effects: aborts if -a overflows */ +// Effects: aborts if -a overflows COMPILER_RT_ABI si_int __negvsi2(si_int a) { const si_int MIN = (si_int)1 << ((int)(sizeof(si_int) * CHAR_BIT) - 1); diff --git a/lib/builtins/negvti2.c b/lib/builtins/negvti2.c index 5ce91b3e1..8f92e1046 100644 --- a/lib/builtins/negvti2.c +++ b/lib/builtins/negvti2.c @@ -1,23 +1,22 @@ -/*===-- negvti2.c - Implement __negvti2 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - *===----------------------------------------------------------------------=== - * - *This file implements __negvti2 for the compiler_rt library. - * - *===----------------------------------------------------------------------=== - */ +//===-- negvti2.c - Implement __negvti2 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __negvti2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: -a */ +// Returns: -a -/* Effects: aborts if -a overflows */ +// Effects: aborts if -a overflows COMPILER_RT_ABI ti_int __negvti2(ti_int a) { const ti_int MIN = (ti_int)1 << ((int)(sizeof(ti_int) * CHAR_BIT) - 1); @@ -26,4 +25,4 @@ COMPILER_RT_ABI ti_int __negvti2(ti_int a) { return -a; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/os_version_check.c b/lib/builtins/os_version_check.c index d99396a2b..3794b9794 100644 --- a/lib/builtins/os_version_check.c +++ b/lib/builtins/os_version_check.c @@ -1,16 +1,15 @@ -/* ===-- os_version_check.c - OS version checking -------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements the function __isOSVersionAtLeast, used by - * Objective-C's @available - * - * ===----------------------------------------------------------------------=== - */ +//===-- os_version_check.c - OS version checking -------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements the function __isOSVersionAtLeast, used by +// Objective-C's @available +// +//===----------------------------------------------------------------------===// #ifdef __APPLE__ @@ -22,12 +21,12 @@ #include <stdlib.h> #include <string.h> -/* These three variables hold the host's OS version. */ +// These three variables hold the host's OS version. static int32_t GlobalMajor, GlobalMinor, GlobalSubminor; static dispatch_once_t DispatchOnceCounter; -/* We can't include <CoreFoundation/CoreFoundation.h> directly from here, so - * just forward declare everything that we need from it. */ +// We can't include <CoreFoundation/CoreFoundation.h> directly from here, so +// just forward declare everything that we need from it. typedef const void *CFDataRef, *CFAllocatorRef, *CFPropertyListRef, *CFStringRef, *CFDictionaryRef, *CFTypeRef, *CFErrorRef; @@ -47,9 +46,9 @@ typedef _Bool Boolean; typedef CFIndex CFPropertyListFormat; typedef uint32_t CFStringEncoding; -/* kCFStringEncodingASCII analog. */ +// kCFStringEncodingASCII analog. #define CF_STRING_ENCODING_ASCII 0x0600 -/* kCFStringEncodingUTF8 analog. */ +// kCFStringEncodingUTF8 analog. #define CF_STRING_ENCODING_UTF8 0x08000100 #define CF_PROPERTY_LIST_IMMUTABLE 0 @@ -73,10 +72,10 @@ typedef Boolean (*CFStringGetCStringFuncTy)(CFStringRef, char *, CFIndex, CFStringEncoding); typedef void (*CFReleaseFuncTy)(CFTypeRef); -/* Find and parse the SystemVersion.plist file. */ +// Find and parse the SystemVersion.plist file. static void parseSystemVersionPList(void *Unused) { (void)Unused; - /* Load CoreFoundation dynamically */ + // Load CoreFoundation dynamically const void *NullAllocator = dlsym(RTLD_DEFAULT, "kCFAllocatorNull"); if (!NullAllocator) return; @@ -89,16 +88,16 @@ static void parseSystemVersionPList(void *Unused) { CFPropertyListCreateWithDataFuncTy CFPropertyListCreateWithDataFunc = (CFPropertyListCreateWithDataFuncTy)dlsym(RTLD_DEFAULT, "CFPropertyListCreateWithData"); -/* CFPropertyListCreateWithData was introduced only in macOS 10.6+, so it - * will be NULL on earlier OS versions. */ +// CFPropertyListCreateWithData was introduced only in macOS 10.6+, so it +// will be NULL on earlier OS versions. #pragma clang diagnostic push #pragma clang diagnostic ignored "-Wdeprecated-declarations" CFPropertyListCreateFromXMLDataFuncTy CFPropertyListCreateFromXMLDataFunc = (CFPropertyListCreateFromXMLDataFuncTy)dlsym( RTLD_DEFAULT, "CFPropertyListCreateFromXMLData"); #pragma clang diagnostic pop - /* CFPropertyListCreateFromXMLDataFunc is deprecated in macOS 10.10, so it - * might be NULL in future OS versions. */ + // CFPropertyListCreateFromXMLDataFunc is deprecated in macOS 10.10, so it + // might be NULL in future OS versions. if (!CFPropertyListCreateWithDataFunc && !CFPropertyListCreateFromXMLDataFunc) return; CFStringCreateWithCStringNoCopyFuncTy CFStringCreateWithCStringNoCopyFunc = @@ -142,7 +141,7 @@ static void parseSystemVersionPList(void *Unused) { if (!PropertyList) return; - /* Dynamically allocated stuff. */ + // Dynamically allocated stuff. CFDictionaryRef PListRef = NULL; CFDataRef FileContentsRef = NULL; UInt8 *PListBuf = NULL; @@ -161,8 +160,8 @@ static void parseSystemVersionPList(void *Unused) { if (NumRead != (size_t)PListFileSize) goto Fail; - /* Get the file buffer into CF's format. We pass in a null allocator here * - * because we free PListBuf ourselves */ + // Get the file buffer into CF's format. We pass in a null allocator here * + // because we free PListBuf ourselves FileContentsRef = (*CFDataCreateWithBytesNoCopyFunc)( NULL, PListBuf, (CFIndex)NumRead, AllocatorNull); if (!FileContentsRef) @@ -203,7 +202,7 @@ Fail: } int32_t __isOSVersionAtLeast(int32_t Major, int32_t Minor, int32_t Subminor) { - /* Populate the global version variables, if they haven't already. */ + // Populate the global version variables, if they haven't already. dispatch_once_f(&DispatchOnceCounter, NULL, parseSystemVersionPList); if (Major < GlobalMajor) @@ -219,7 +218,7 @@ int32_t __isOSVersionAtLeast(int32_t Major, int32_t Minor, int32_t Subminor) { #else -/* Silence an empty translation unit warning. */ +// Silence an empty translation unit warning. typedef int unused; #endif diff --git a/lib/builtins/paritydi2.c b/lib/builtins/paritydi2.c index 27b762db1..dd9d45e63 100644 --- a/lib/builtins/paritydi2.c +++ b/lib/builtins/paritydi2.c @@ -1,19 +1,18 @@ -/* ===-- paritydi2.c - Implement __paritydi2 -------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __paritydi2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- paritydi2.c - Implement __paritydi2 -------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __paritydi2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: 1 if number of bits is odd else returns 0 */ +// Returns: 1 if number of bits is odd else returns 0 COMPILER_RT_ABI si_int __paritydi2(di_int a) { dwords x; diff --git a/lib/builtins/paritysi2.c b/lib/builtins/paritysi2.c index d7a4f5246..3efa961f2 100644 --- a/lib/builtins/paritysi2.c +++ b/lib/builtins/paritysi2.c @@ -1,19 +1,18 @@ -/* ===-- paritysi2.c - Implement __paritysi2 -------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __paritysi2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- paritysi2.c - Implement __paritysi2 -------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __paritysi2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: 1 if number of bits is odd else returns 0 */ +// Returns: 1 if number of bits is odd else returns 0 COMPILER_RT_ABI si_int __paritysi2(si_int a) { su_int x = (su_int)a; diff --git a/lib/builtins/parityti2.c b/lib/builtins/parityti2.c index 1eec2b7c2..f3942ba83 100644 --- a/lib/builtins/parityti2.c +++ b/lib/builtins/parityti2.c @@ -1,21 +1,20 @@ -/* ===-- parityti2.c - Implement __parityti2 -------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __parityti2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- parityti2.c - Implement __parityti2 -------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __parityti2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: 1 if number of bits is odd else returns 0 */ +// Returns: 1 if number of bits is odd else returns 0 COMPILER_RT_ABI si_int __parityti2(ti_int a) { twords x; @@ -23,4 +22,4 @@ COMPILER_RT_ABI si_int __parityti2(ti_int a) { return __paritydi2(x.s.high ^ x.s.low); } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/popcountdi2.c b/lib/builtins/popcountdi2.c index 90c9fe714..9bbc39c66 100644 --- a/lib/builtins/popcountdi2.c +++ b/lib/builtins/popcountdi2.c @@ -1,35 +1,32 @@ -/* ===-- popcountdi2.c - Implement __popcountdi2 ----------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __popcountdi2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- popcountdi2.c - Implement __popcountdi2 ---------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __popcountdi2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: count of 1 bits */ +// Returns: count of 1 bits COMPILER_RT_ABI si_int __popcountdi2(di_int a) { du_int x2 = (du_int)a; x2 = x2 - ((x2 >> 1) & 0x5555555555555555uLL); - /* Every 2 bits holds the sum of every pair of bits (32) */ + // Every 2 bits holds the sum of every pair of bits (32) x2 = ((x2 >> 2) & 0x3333333333333333uLL) + (x2 & 0x3333333333333333uLL); - /* Every 4 bits holds the sum of every 4-set of bits (3 significant bits) (16) - */ + // Every 4 bits holds the sum of every 4-set of bits (3 significant bits) (16) x2 = (x2 + (x2 >> 4)) & 0x0F0F0F0F0F0F0F0FuLL; - /* Every 8 bits holds the sum of every 8-set of bits (4 significant bits) (8) - */ + // Every 8 bits holds the sum of every 8-set of bits (4 significant bits) (8) su_int x = (su_int)(x2 + (x2 >> 32)); - /* The lower 32 bits hold four 16 bit sums (5 significant bits). */ - /* Upper 32 bits are garbage */ + // The lower 32 bits hold four 16 bit sums (5 significant bits). + // Upper 32 bits are garbage x = x + (x >> 16); - /* The lower 16 bits hold two 32 bit sums (6 significant bits). */ - /* Upper 16 bits are garbage */ - return (x + (x >> 8)) & 0x0000007F; /* (7 significant bits) */ + // The lower 16 bits hold two 32 bit sums (6 significant bits). + // Upper 16 bits are garbage + return (x + (x >> 8)) & 0x0000007F; // (7 significant bits) } diff --git a/lib/builtins/popcountsi2.c b/lib/builtins/popcountsi2.c index 77c1a3145..75e592a77 100644 --- a/lib/builtins/popcountsi2.c +++ b/lib/builtins/popcountsi2.c @@ -1,30 +1,29 @@ -/* ===-- popcountsi2.c - Implement __popcountsi2 ---------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __popcountsi2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- popcountsi2.c - Implement __popcountsi2 ---------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __popcountsi2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: count of 1 bits */ +// Returns: count of 1 bits COMPILER_RT_ABI si_int __popcountsi2(si_int a) { su_int x = (su_int)a; x = x - ((x >> 1) & 0x55555555); - /* Every 2 bits holds the sum of every pair of bits */ + // Every 2 bits holds the sum of every pair of bits x = ((x >> 2) & 0x33333333) + (x & 0x33333333); - /* Every 4 bits holds the sum of every 4-set of bits (3 significant bits) */ + // Every 4 bits holds the sum of every 4-set of bits (3 significant bits) x = (x + (x >> 4)) & 0x0F0F0F0F; - /* Every 8 bits holds the sum of every 8-set of bits (4 significant bits) */ + // Every 8 bits holds the sum of every 8-set of bits (4 significant bits) x = (x + (x >> 16)); - /* The lower 16 bits hold two 8 bit sums (5 significant bits).*/ - /* Upper 16 bits are garbage */ - return (x + (x >> 8)) & 0x0000003F; /* (6 significant bits) */ + // The lower 16 bits hold two 8 bit sums (5 significant bits). + // Upper 16 bits are garbage + return (x + (x >> 8)) & 0x0000003F; // (6 significant bits) } diff --git a/lib/builtins/popcountti2.c b/lib/builtins/popcountti2.c index 087e3807e..853fd7223 100644 --- a/lib/builtins/popcountti2.c +++ b/lib/builtins/popcountti2.c @@ -1,47 +1,43 @@ -/* ===-- popcountti2.c - Implement __popcountti2 ----------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __popcountti2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- popcountti2.c - Implement __popcountti2 +//----------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __popcountti2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: count of 1 bits */ +// Returns: count of 1 bits COMPILER_RT_ABI si_int __popcountti2(ti_int a) { tu_int x3 = (tu_int)a; x3 = x3 - ((x3 >> 1) & (((tu_int)0x5555555555555555uLL << 64) | 0x5555555555555555uLL)); - /* Every 2 bits holds the sum of every pair of bits (64) */ + // Every 2 bits holds the sum of every pair of bits (64) x3 = ((x3 >> 2) & (((tu_int)0x3333333333333333uLL << 64) | 0x3333333333333333uLL)) + (x3 & (((tu_int)0x3333333333333333uLL << 64) | 0x3333333333333333uLL)); - /* Every 4 bits holds the sum of every 4-set of bits (3 significant bits) (32) - */ + // Every 4 bits holds the sum of every 4-set of bits (3 significant bits) (32) x3 = (x3 + (x3 >> 4)) & (((tu_int)0x0F0F0F0F0F0F0F0FuLL << 64) | 0x0F0F0F0F0F0F0F0FuLL); - /* Every 8 bits holds the sum of every 8-set of bits (4 significant bits) (16) - */ + // Every 8 bits holds the sum of every 8-set of bits (4 significant bits) (16) du_int x2 = (du_int)(x3 + (x3 >> 64)); - /* Every 8 bits holds the sum of every 8-set of bits (5 significant bits) (8) - */ + // Every 8 bits holds the sum of every 8-set of bits (5 significant bits) (8) su_int x = (su_int)(x2 + (x2 >> 32)); - /* Every 8 bits holds the sum of every 8-set of bits (6 significant bits) (4) - */ + // Every 8 bits holds the sum of every 8-set of bits (6 significant bits) (4) x = x + (x >> 16); - /* Every 8 bits holds the sum of every 8-set of bits (7 significant bits) (2) - */ - /* Upper 16 bits are garbage */ - return (x + (x >> 8)) & 0xFF; /* (8 significant bits) */ + // Every 8 bits holds the sum of every 8-set of bits (7 significant bits) (2) + // + // Upper 16 bits are garbage + return (x + (x >> 8)) & 0xFF; // (8 significant bits) } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/powidf2.c b/lib/builtins/powidf2.c index 7de4cece4..969758848 100644 --- a/lib/builtins/powidf2.c +++ b/lib/builtins/powidf2.c @@ -1,19 +1,18 @@ -/* ===-- powidf2.cpp - Implement __powidf2 ---------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __powidf2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- powidf2.cpp - Implement __powidf2 ---------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __powidf2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a ^ b */ +// Returns: a ^ b COMPILER_RT_ABI double __powidf2(double a, si_int b) { const int recip = b < 0; diff --git a/lib/builtins/powisf2.c b/lib/builtins/powisf2.c index 78592b04b..469402348 100644 --- a/lib/builtins/powisf2.c +++ b/lib/builtins/powisf2.c @@ -1,19 +1,18 @@ -/*===-- powisf2.cpp - Implement __powisf2 ---------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __powisf2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- powisf2.cpp - Implement __powisf2 ---------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __powisf2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a ^ b */ +// Returns: a ^ b COMPILER_RT_ABI float __powisf2(float a, si_int b) { const int recip = b < 0; diff --git a/lib/builtins/powitf2.c b/lib/builtins/powitf2.c index 98364242f..fcbdb4c2e 100644 --- a/lib/builtins/powitf2.c +++ b/lib/builtins/powitf2.c @@ -1,21 +1,20 @@ -/* ===-- powitf2.cpp - Implement __powitf2 ---------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __powitf2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- powitf2.cpp - Implement __powitf2 ---------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __powitf2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #if _ARCH_PPC -/* Returns: a ^ b */ +// Returns: a ^ b COMPILER_RT_ABI long double __powitf2(long double a, si_int b) { const int recip = b < 0; diff --git a/lib/builtins/powixf2.c b/lib/builtins/powixf2.c index f5cbbccfe..b7b52095a 100644 --- a/lib/builtins/powixf2.c +++ b/lib/builtins/powixf2.c @@ -1,21 +1,20 @@ -/* ===-- powixf2.cpp - Implement __powixf2 ---------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __powixf2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- powixf2.cpp - Implement __powixf2 ---------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __powixf2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #if !_ARCH_PPC #include "int_lib.h" -/* Returns: a ^ b */ +// Returns: a ^ b COMPILER_RT_ABI long double __powixf2(long double a, si_int b) { const int recip = b < 0; diff --git a/lib/builtins/ppc/DD.h b/lib/builtins/ppc/DD.h index 542f7e781..8f31a962f 100644 --- a/lib/builtins/ppc/DD.h +++ b/lib/builtins/ppc/DD.h @@ -42,4 +42,4 @@ long double __gcc_qsub(long double, long double); long double __gcc_qmul(long double, long double); long double __gcc_qdiv(long double, long double); -#endif /* COMPILERRT_DD_HEADER */ +#endif // COMPILERRT_DD_HEADER diff --git a/lib/builtins/ppc/divtc3.c b/lib/builtins/ppc/divtc3.c index bce54e187..afaccf5a8 100644 --- a/lib/builtins/ppc/divtc3.c +++ b/lib/builtins/ppc/divtc3.c @@ -1,7 +1,6 @@ -/* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - */ +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception #include "../int_math.h" #include "DD.h" @@ -13,7 +12,7 @@ #if !defined(CRT_INFINITY) && defined(HUGE_VAL) #define CRT_INFINITY HUGE_VAL -#endif /* CRT_INFINITY */ +#endif // CRT_INFINITY #define makeFinite(x) \ { \ diff --git a/lib/builtins/ppc/fixtfdi.c b/lib/builtins/ppc/fixtfdi.c index d33194a68..a97aaf095 100644 --- a/lib/builtins/ppc/fixtfdi.c +++ b/lib/builtins/ppc/fixtfdi.c @@ -1,11 +1,9 @@ -/* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - */ +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -/* int64_t __fixunstfdi(long double x); - * This file implements the PowerPC 128-bit double-double -> int64_t conversion - */ +// int64_t __fixunstfdi(long double x); +// This file implements the PowerPC 128-bit double-double -> int64_t conversion #include "../int_math.h" #include "DD.h" @@ -18,37 +16,35 @@ uint64_t __fixtfdi(long double input) { (uint32_t)(hibits.x >> 32) & UINT32_C(0x7fffffff); const uint32_t absHighWordMinusOne = absHighWord - UINT32_C(0x3ff00000); - /* If (1.0 - tiny) <= input < 0x1.0p63: */ + // If (1.0 - tiny) <= input < 0x1.0p63: if (UINT32_C(0x03f00000) > absHighWordMinusOne) { - /* Do an unsigned conversion of the absolute value, then restore the sign. - */ + // Do an unsigned conversion of the absolute value, then restore the sign. const int unbiasedHeadExponent = absHighWordMinusOne >> 20; - int64_t result = hibits.x & INT64_C(0x000fffffffffffff); /* mantissa(hi) */ - result |= INT64_C(0x0010000000000000); /* matissa(hi) with implicit bit */ - result <<= 10; /* mantissa(hi) with one zero preceding bit. */ + int64_t result = hibits.x & INT64_C(0x000fffffffffffff); // mantissa(hi) + result |= INT64_C(0x0010000000000000); // matissa(hi) with implicit bit + result <<= 10; // mantissa(hi) with one zero preceding bit. const int64_t hiNegationMask = ((int64_t)(hibits.x)) >> 63; - /* If the tail is non-zero, we need to patch in the tail bits. */ + // If the tail is non-zero, we need to patch in the tail bits. if (0.0 != x.s.lo) { const doublebits lobits = {.d = x.s.lo}; int64_t tailMantissa = lobits.x & INT64_C(0x000fffffffffffff); tailMantissa |= INT64_C(0x0010000000000000); - /* At this point we have the mantissa of |tail| */ - /* We need to negate it if head and tail have different signs. */ + // At this point we have the mantissa of |tail| + // We need to negate it if head and tail have different signs. const int64_t loNegationMask = ((int64_t)(lobits.x)) >> 63; const int64_t negationMask = loNegationMask ^ hiNegationMask; tailMantissa = (tailMantissa ^ negationMask) - negationMask; - /* Now we have the mantissa of tail as a signed 2s-complement integer */ + // Now we have the mantissa of tail as a signed 2s-complement integer const int biasedTailExponent = (int)(lobits.x >> 52) & 0x7ff; - /* Shift the tail mantissa into the right position, accounting for the - * bias of 10 that we shifted the head mantissa by. - */ + // Shift the tail mantissa into the right position, accounting for the + // bias of 10 that we shifted the head mantissa by. tailMantissa >>= (unbiasedHeadExponent - (biasedTailExponent - (1023 - 10))); @@ -57,36 +53,34 @@ uint64_t __fixtfdi(long double input) { result >>= (62 - unbiasedHeadExponent); - /* Restore the sign of the result and return */ + // Restore the sign of the result and return result = (result ^ hiNegationMask) - hiNegationMask; return result; } - /* Edge cases handled here: */ + // Edge cases handled here: - /* |x| < 1, result is zero. */ + // |x| < 1, result is zero. if (1.0 > crt_fabs(x.s.hi)) return INT64_C(0); - /* x very close to INT64_MIN, care must be taken to see which side we are on. - */ + // x very close to INT64_MIN, care must be taken to see which side we are on. if (x.s.hi == -0x1.0p63) { int64_t result = INT64_MIN; if (0.0 < x.s.lo) { - /* If the tail is positive, the correct result is something other than - * INT64_MIN. we'll need to figure out what it is. - */ + // If the tail is positive, the correct result is something other than + // INT64_MIN. we'll need to figure out what it is. const doublebits lobits = {.d = x.s.lo}; int64_t tailMantissa = lobits.x & INT64_C(0x000fffffffffffff); tailMantissa |= INT64_C(0x0010000000000000); - /* Now we negate the tailMantissa */ + // Now we negate the tailMantissa tailMantissa = (tailMantissa ^ INT64_C(-1)) + INT64_C(1); - /* And shift it by the appropriate amount */ + // And shift it by the appropriate amount const int biasedTailExponent = (int)(lobits.x >> 52) & 0x7ff; tailMantissa >>= 1075 - biasedTailExponent; @@ -96,7 +90,7 @@ uint64_t __fixtfdi(long double input) { return result; } - /* Signed overflows, infinities, and NaNs */ + // Signed overflows, infinities, and NaNs if (x.s.hi > 0.0) return INT64_MAX; else diff --git a/lib/builtins/ppc/fixunstfdi.c b/lib/builtins/ppc/fixunstfdi.c index 11b977662..8d53f3725 100644 --- a/lib/builtins/ppc/fixunstfdi.c +++ b/lib/builtins/ppc/fixunstfdi.c @@ -1,11 +1,9 @@ -/* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - */ +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -/* uint64_t __fixunstfdi(long double x); */ -/* This file implements the PowerPC 128-bit double-double -> uint64_t conversion - */ +// uint64_t __fixunstfdi(long double x); +// This file implements the PowerPC 128-bit double-double -> uint64_t conversion #include "DD.h" @@ -16,33 +14,31 @@ uint64_t __fixunstfdi(long double input) { const uint32_t highWordMinusOne = (uint32_t)(hibits.x >> 32) - UINT32_C(0x3ff00000); - /* If (1.0 - tiny) <= input < 0x1.0p64: */ + // If (1.0 - tiny) <= input < 0x1.0p64: if (UINT32_C(0x04000000) > highWordMinusOne) { const int unbiasedHeadExponent = highWordMinusOne >> 20; - uint64_t result = - hibits.x & UINT64_C(0x000fffffffffffff); /* mantissa(hi) */ - result |= UINT64_C(0x0010000000000000); /* matissa(hi) with implicit bit */ - result <<= 11; /* mantissa(hi) left aligned in the int64 field. */ + uint64_t result = hibits.x & UINT64_C(0x000fffffffffffff); // mantissa(hi) + result |= UINT64_C(0x0010000000000000); // matissa(hi) with implicit bit + result <<= 11; // mantissa(hi) left aligned in the int64 field. - /* If the tail is non-zero, we need to patch in the tail bits. */ + // If the tail is non-zero, we need to patch in the tail bits. if (0.0 != x.s.lo) { const doublebits lobits = {.d = x.s.lo}; int64_t tailMantissa = lobits.x & INT64_C(0x000fffffffffffff); tailMantissa |= INT64_C(0x0010000000000000); - /* At this point we have the mantissa of |tail| */ + // At this point we have the mantissa of |tail| const int64_t negationMask = ((int64_t)(lobits.x)) >> 63; tailMantissa = (tailMantissa ^ negationMask) - negationMask; - /* Now we have the mantissa of tail as a signed 2s-complement integer */ + // Now we have the mantissa of tail as a signed 2s-complement integer const int biasedTailExponent = (int)(lobits.x >> 52) & 0x7ff; - /* Shift the tail mantissa into the right position, accounting for the - * bias of 11 that we shifted the head mantissa by. - */ + // Shift the tail mantissa into the right position, accounting for the + // bias of 11 that we shifted the head mantissa by. tailMantissa >>= (unbiasedHeadExponent - (biasedTailExponent - (1023 - 11))); @@ -53,7 +49,7 @@ uint64_t __fixunstfdi(long double input) { return result; } - /* Edge cases are handled here, with saturation. */ + // Edge cases are handled here, with saturation. if (1.0 > x.s.hi) return UINT64_C(0); else diff --git a/lib/builtins/ppc/fixunstfti.c b/lib/builtins/ppc/fixunstfti.c index a61992327..1d19e01e3 100644 --- a/lib/builtins/ppc/fixunstfti.c +++ b/lib/builtins/ppc/fixunstfti.c @@ -14,10 +14,10 @@ #include "../int_math.h" #define BIAS 1023 -/* Convert long double into an unsigned 128-bit integer. */ +// Convert long double into an unsigned 128-bit integer. __uint128_t __fixunstfti(long double input) { - /* If we are trying to convert a NaN, return the NaN bit pattern. */ + // If we are trying to convert a NaN, return the NaN bit pattern. if (crt_isnan(input)) { return ((__uint128_t)0x7FF8000000000000ll) << 64 | (__uint128_t)0x0000000000000000ll; @@ -25,59 +25,59 @@ __uint128_t __fixunstfti(long double input) { __uint128_t result, hiResult, loResult; int hiExponent, loExponent, shift; - /* The long double representation, with the high and low portions of - * the long double, and the corresponding bit patterns of each double. */ + // The long double representation, with the high and low portions of + // the long double, and the corresponding bit patterns of each double. union { long double ld; - double d[2]; /* [0] is the high double, [1] is the low double. */ - unsigned long long ull[2]; /* High and low doubles as 64-bit integers. */ + double d[2]; // [0] is the high double, [1] is the low double. + unsigned long long ull[2]; // High and low doubles as 64-bit integers. } ldUnion; - /* If the long double is less than 1.0 or negative, - * return 0.0. */ + // If the long double is less than 1.0 or negative, + // return 0.0. if (input < 1.0) return 0.0; - /* Retrieve the 64-bit patterns of high and low doubles. - * Compute the unbiased exponent of both high and low doubles by - * removing the signs, isolating the exponent, and subtracting - * the bias from it. */ + // Retrieve the 64-bit patterns of high and low doubles. + // Compute the unbiased exponent of both high and low doubles by + // removing the signs, isolating the exponent, and subtracting + // the bias from it. ldUnion.ld = input; hiExponent = ((ldUnion.ull[0] & 0x7FFFFFFFFFFFFFFFll) >> 52) - BIAS; loExponent = ((ldUnion.ull[1] & 0x7FFFFFFFFFFFFFFFll) >> 52) - BIAS; - /* Convert each double into int64; they will be added to the int128 result. - * CASE 1: High or low double fits in int64 - * - Convert the each double normally into int64. - * - * CASE 2: High or low double does not fit in int64 - * - Scale the double to fit within a 64-bit integer - * - Calculate the shift (amount to scale the double by in the int128) - * - Clear all the bits of the exponent (with 0x800FFFFFFFFFFFFF) - * - Add BIAS+53 (0x4350000000000000) to exponent to correct the value - * - Scale (move) the double to the correct place in the int128 - * (Move it by 2^53 places) - * - * Note: If the high double is assumed to be positive, an unsigned conversion - * from long double to 64-bit integer is needed. The low double can be either - * positive or negative, so a signed conversion is needed to retain the result - * of the low double and to ensure it does not simply get converted to 0. */ + // Convert each double into int64; they will be added to the int128 result. + // CASE 1: High or low double fits in int64 + // - Convert the each double normally into int64. + // + // CASE 2: High or low double does not fit in int64 + // - Scale the double to fit within a 64-bit integer + // - Calculate the shift (amount to scale the double by in the int128) + // - Clear all the bits of the exponent (with 0x800FFFFFFFFFFFFF) + // - Add BIAS+53 (0x4350000000000000) to exponent to correct the value + // - Scale (move) the double to the correct place in the int128 + // (Move it by 2^53 places) + // + // Note: If the high double is assumed to be positive, an unsigned conversion + // from long double to 64-bit integer is needed. The low double can be either + // positive or negative, so a signed conversion is needed to retain the result + // of the low double and to ensure it does not simply get converted to 0. - /* CASE 1 - High double fits in int64. */ + // CASE 1 - High double fits in int64. if (hiExponent < 63) { hiResult = (unsigned long long)ldUnion.d[0]; } else if (hiExponent < 128) { - /* CASE 2 - High double does not fit in int64, scale and convert it. */ + // CASE 2 - High double does not fit in int64, scale and convert it. shift = hiExponent - 54; ldUnion.ull[0] &= 0x800FFFFFFFFFFFFFll; ldUnion.ull[0] |= 0x4350000000000000ll; hiResult = (unsigned long long)ldUnion.d[0]; hiResult <<= shift; } else { - /* Detect cases for overflow. When the exponent of the high - * double is greater than 128 bits and when the long double - * input is positive, return the max 128-bit integer. - * For negative inputs with exponents > 128, return 1, like gcc. */ + // Detect cases for overflow. When the exponent of the high + // double is greater than 128 bits and when the long double + // input is positive, return the max 128-bit integer. + // For negative inputs with exponents > 128, return 1, like gcc. if (ldUnion.d[0] > 0) { return ((__uint128_t)0xFFFFFFFFFFFFFFFFll) << 64 | (__uint128_t)0xFFFFFFFFFFFFFFFFll; @@ -87,11 +87,11 @@ __uint128_t __fixunstfti(long double input) { } } - /* CASE 1 - Low double fits in int64. */ + // CASE 1 - Low double fits in int64. if (loExponent < 63) { loResult = (long long)ldUnion.d[1]; } else { - /* CASE 2 - Low double does not fit in int64, scale and convert it. */ + // CASE 2 - Low double does not fit in int64, scale and convert it. shift = loExponent - 54; ldUnion.ull[1] &= 0x800FFFFFFFFFFFFFll; ldUnion.ull[1] |= 0x4350000000000000ll; @@ -99,7 +99,7 @@ __uint128_t __fixunstfti(long double input) { loResult <<= shift; } - /* Add the high and low doublewords together to form a 128 bit integer. */ + // Add the high and low doublewords together to form a 128 bit integer. result = loResult + hiResult; return result; } diff --git a/lib/builtins/ppc/floatditf.c b/lib/builtins/ppc/floatditf.c index a5a4df4e0..4c365418f 100644 --- a/lib/builtins/ppc/floatditf.c +++ b/lib/builtins/ppc/floatditf.c @@ -1,10 +1,9 @@ -/* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - */ +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -/* long double __floatditf(long long x); */ -/* This file implements the PowerPC long long -> long double conversion */ +// long double __floatditf(long long x); +// This file implements the PowerPC long long -> long double conversion #include "DD.h" @@ -14,18 +13,16 @@ long double __floatditf(int64_t a) { static const double twop52 = 0x1.0p52; doublebits low = {.d = twop52}; - low.x |= a & UINT64_C(0x00000000ffffffff); /* 0x1.0p52 + low 32 bits of a. */ + low.x |= a & UINT64_C(0x00000000ffffffff); // 0x1.0p52 + low 32 bits of a. const double high_addend = (double)((int32_t)(a >> 32)) * twop32 - twop52; - /* At this point, we have two double precision numbers - * high_addend and low.d, and we wish to return their sum - * as a canonicalized long double: - */ + // At this point, we have two double precision numbers + // high_addend and low.d, and we wish to return their sum + // as a canonicalized long double: - /* This implementation sets the inexact flag spuriously. - * This could be avoided, but at some substantial cost. - */ + // This implementation sets the inexact flag spuriously. + // This could be avoided, but at some substantial cost. DD result; diff --git a/lib/builtins/ppc/floattitf.c b/lib/builtins/ppc/floattitf.c index b722ac978..6deac6498 100644 --- a/lib/builtins/ppc/floattitf.c +++ b/lib/builtins/ppc/floattitf.c @@ -13,35 +13,34 @@ #include <stdint.h> -/* Conversions from signed and unsigned 64-bit int to long double. */ +// Conversions from signed and unsigned 64-bit int to long double. long double __floatditf(int64_t); long double __floatunditf(uint64_t); -/* Convert a signed 128-bit integer to long double. - * This uses the following property: Let hi and lo be 64-bits each, - * and let signed_val_k() and unsigned_val_k() be the value of the - * argument interpreted as a signed or unsigned k-bit integer. Then, - * - * signed_val_128(hi,lo) = signed_val_64(hi) * 2^64 + unsigned_val_64(lo) - * = (long double)hi * 2^64 + (long double)lo, - * - * where (long double)hi and (long double)lo are signed and - * unsigned 64-bit integer to long double conversions, respectively. - */ +// Convert a signed 128-bit integer to long double. +// This uses the following property: Let hi and lo be 64-bits each, +// and let signed_val_k() and unsigned_val_k() be the value of the +// argument interpreted as a signed or unsigned k-bit integer. Then, +// +// signed_val_128(hi,lo) = signed_val_64(hi) * 2^64 + unsigned_val_64(lo) +// = (long double)hi * 2^64 + (long double)lo, +// +// where (long double)hi and (long double)lo are signed and +// unsigned 64-bit integer to long double conversions, respectively. long double __floattitf(__int128_t arg) { - /* Split the int128 argument into 64-bit high and low int64 parts. */ + // Split the int128 argument into 64-bit high and low int64 parts. int64_t ArgHiPart = (int64_t)(arg >> 64); uint64_t ArgLoPart = (uint64_t)arg; - /* Convert each 64-bit part into long double. The high part - * must be a signed conversion and the low part an unsigned conversion - * to ensure the correct result. */ + // Convert each 64-bit part into long double. The high part + // must be a signed conversion and the low part an unsigned conversion + // to ensure the correct result. long double ConvertedHiPart = __floatditf(ArgHiPart); long double ConvertedLoPart = __floatunditf(ArgLoPart); - /* The low bit of ArgHiPart corresponds to the 2^64 bit in arg. - * Multiply the high part by 2^64 to undo the right shift by 64-bits - * done in the splitting. Then, add to the low part to obtain the - * final result. */ + // The low bit of ArgHiPart corresponds to the 2^64 bit in arg. + // Multiply the high part by 2^64 to undo the right shift by 64-bits + // done in the splitting. Then, add to the low part to obtain the + // final result. return ((ConvertedHiPart * 0x1.0p64) + ConvertedLoPart); } diff --git a/lib/builtins/ppc/floatunditf.c b/lib/builtins/ppc/floatunditf.c index d2d01d29d..fb4cd3f91 100644 --- a/lib/builtins/ppc/floatunditf.c +++ b/lib/builtins/ppc/floatunditf.c @@ -1,17 +1,15 @@ -/* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - */ +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -/* long double __floatunditf(unsigned long long x); */ -/* This file implements the PowerPC unsigned long long -> long double conversion - */ +// long double __floatunditf(unsigned long long x); +// This file implements the PowerPC unsigned long long -> long double conversion #include "DD.h" long double __floatunditf(uint64_t a) { - /* Begins with an exact copy of the code from __floatundidf */ + // Begins with an exact copy of the code from __floatundidf static const double twop52 = 0x1.0p52; static const double twop84 = 0x1.0p84; @@ -20,18 +18,17 @@ long double __floatunditf(uint64_t a) { doublebits high = {.d = twop84}; doublebits low = {.d = twop52}; - high.x |= a >> 32; /* 0x1.0p84 + high 32 bits of a */ - low.x |= a & UINT64_C(0x00000000ffffffff); /* 0x1.0p52 + low 32 bits of a */ + high.x |= a >> 32; // 0x1.0p84 + high 32 bits of a + low.x |= a & UINT64_C(0x00000000ffffffff); // 0x1.0p52 + low 32 bits of a const double high_addend = high.d - twop84_plus_twop52; - /* At this point, we have two double precision numbers - * high_addend and low.d, and we wish to return their sum - * as a canonicalized long double: - */ + // At this point, we have two double precision numbers + // high_addend and low.d, and we wish to return their sum + // as a canonicalized long double: - /* This implementation sets the inexact flag spuriously. */ - /* This could be avoided, but at some substantial cost. */ + // This implementation sets the inexact flag spuriously. + // This could be avoided, but at some substantial cost. DD result; diff --git a/lib/builtins/ppc/gcc_qadd.c b/lib/builtins/ppc/gcc_qadd.c index e56962e4e..6e1e63cb5 100644 --- a/lib/builtins/ppc/gcc_qadd.c +++ b/lib/builtins/ppc/gcc_qadd.c @@ -1,12 +1,10 @@ -/* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - */ +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -/* long double __gcc_qadd(long double x, long double y); - * This file implements the PowerPC 128-bit double-double add operation. - * This implementation is shamelessly cribbed from Apple's DDRT, circa 1993(!) - */ +// long double __gcc_qadd(long double x, long double y); +// This file implements the PowerPC 128-bit double-double add operation. +// This implementation is shamelessly cribbed from Apple's DDRT, circa 1993(!) #include "DD.h" @@ -17,14 +15,14 @@ long double __gcc_qadd(long double x, long double y) { register double A = dst.s.hi, a = dst.s.lo, B = src.s.hi, b = src.s.lo; - /* If both operands are zero: */ + // If both operands are zero: if ((A == 0.0) && (B == 0.0)) { dst.s.hi = A + B; dst.s.lo = 0.0; return dst.ld; } - /* If either operand is NaN or infinity: */ + // If either operand is NaN or infinity: const doublebits abits = {.d = A}; const doublebits bbits = {.d = B}; if ((((uint32_t)(abits.x >> 32) & infinityHi) == infinityHi) || @@ -34,9 +32,9 @@ long double __gcc_qadd(long double x, long double y) { return dst.ld; } - /* If the computation overflows: */ - /* This may be playing things a little bit fast and loose, but it will do for - * a start. */ + // If the computation overflows: + // This may be playing things a little bit fast and loose, but it will do for + // a start. const double testForOverflow = A + (B + (a + b)); const doublebits testbits = {.d = testForOverflow}; if (((uint32_t)(testbits.x >> 32) & infinityHi) == infinityHi) { diff --git a/lib/builtins/ppc/gcc_qdiv.c b/lib/builtins/ppc/gcc_qdiv.c index bbb536833..35a3cbc3d 100644 --- a/lib/builtins/ppc/gcc_qdiv.c +++ b/lib/builtins/ppc/gcc_qdiv.c @@ -1,12 +1,10 @@ -/* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - */ +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -/* long double __gcc_qdiv(long double x, long double y); - * This file implements the PowerPC 128-bit double-double division operation. - * This implementation is shamelessly cribbed from Apple's DDRT, circa 1993(!) - */ +// long double __gcc_qdiv(long double x, long double y); +// This file implements the PowerPC 128-bit double-double division operation. +// This implementation is shamelessly cribbed from Apple's DDRT, circa 1993(!) #include "DD.h" @@ -21,7 +19,7 @@ long double __gcc_qdiv(long double a, long double b) { q = x / y; - /* Detect special cases */ + // Detect special cases if (q == 0.0) { dst.s.hi = q; dst.s.lo = 0.0; diff --git a/lib/builtins/ppc/gcc_qmul.c b/lib/builtins/ppc/gcc_qmul.c index efd12d847..75f519aad 100644 --- a/lib/builtins/ppc/gcc_qmul.c +++ b/lib/builtins/ppc/gcc_qmul.c @@ -1,12 +1,10 @@ -/* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - */ +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -/* long double __gcc_qmul(long double x, long double y); - * This file implements the PowerPC 128-bit double-double multiply operation. - * This implementation is shamelessly cribbed from Apple's DDRT, circa 1993(!) - */ +// long double __gcc_qmul(long double x, long double y); +// This file implements the PowerPC 128-bit double-double multiply operation. +// This implementation is shamelessly cribbed from Apple's DDRT, circa 1993(!) #include "DD.h" @@ -21,7 +19,7 @@ long double __gcc_qmul(long double x, long double y) { ab = A * B; - /* Detect special cases */ + // Detect special cases if (ab == 0.0) { dst.s.hi = ab; dst.s.lo = 0.0; @@ -35,7 +33,7 @@ long double __gcc_qmul(long double x, long double y) { return dst.ld; } - /* Generic cases handled here. */ + // Generic cases handled here. aHi = high26bits(A); bHi = high26bits(B); aLo = A - aHi; diff --git a/lib/builtins/ppc/gcc_qsub.c b/lib/builtins/ppc/gcc_qsub.c index 98d20747b..ac08120be 100644 --- a/lib/builtins/ppc/gcc_qsub.c +++ b/lib/builtins/ppc/gcc_qsub.c @@ -1,12 +1,10 @@ -/* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - */ +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -/* long double __gcc_qsub(long double x, long double y); - * This file implements the PowerPC 128-bit double-double add operation. - * This implementation is shamelessly cribbed from Apple's DDRT, circa 1993(!) - */ +// long double __gcc_qsub(long double x, long double y); +// This file implements the PowerPC 128-bit double-double add operation. +// This implementation is shamelessly cribbed from Apple's DDRT, circa 1993(!) #include "DD.h" @@ -17,14 +15,14 @@ long double __gcc_qsub(long double x, long double y) { register double A = dst.s.hi, a = dst.s.lo, B = -src.s.hi, b = -src.s.lo; - /* If both operands are zero: */ + // If both operands are zero: if ((A == 0.0) && (B == 0.0)) { dst.s.hi = A + B; dst.s.lo = 0.0; return dst.ld; } - /* If either operand is NaN or infinity: */ + // If either operand is NaN or infinity: const doublebits abits = {.d = A}; const doublebits bbits = {.d = B}; if ((((uint32_t)(abits.x >> 32) & infinityHi) == infinityHi) || @@ -34,9 +32,9 @@ long double __gcc_qsub(long double x, long double y) { return dst.ld; } - /* If the computation overflows: */ - /* This may be playing things a little bit fast and loose, but it will do for - * a start. */ + // If the computation overflows: + // This may be playing things a little bit fast and loose, but it will do for + // a start. const double testForOverflow = A + (B + (a + b)); const doublebits testbits = {.d = testForOverflow}; if (((uint32_t)(testbits.x >> 32) & infinityHi) == infinityHi) { diff --git a/lib/builtins/ppc/multc3.c b/lib/builtins/ppc/multc3.c index 40b0d60e6..f1fd6816d 100644 --- a/lib/builtins/ppc/multc3.c +++ b/lib/builtins/ppc/multc3.c @@ -1,7 +1,6 @@ -/* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - */ +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception #include "../int_math.h" #include "DD.h" diff --git a/lib/builtins/subvdi3.c b/lib/builtins/subvdi3.c index 2387619de..d7d78f1bb 100644 --- a/lib/builtins/subvdi3.c +++ b/lib/builtins/subvdi3.c @@ -1,21 +1,20 @@ -/* ===-- subvdi3.c - Implement __subvdi3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __subvdi3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- subvdi3.c - Implement __subvdi3 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __subvdi3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a - b */ +// Returns: a - b -/* Effects: aborts if a - b overflows */ +// Effects: aborts if a - b overflows COMPILER_RT_ABI di_int __subvdi3(di_int a, di_int b) { di_int s = (du_int)a - (du_int)b; diff --git a/lib/builtins/subvsi3.c b/lib/builtins/subvsi3.c index c0c304d08..c3cb6e8a2 100644 --- a/lib/builtins/subvsi3.c +++ b/lib/builtins/subvsi3.c @@ -1,21 +1,20 @@ -/* ===-- subvsi3.c - Implement __subvsi3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __subvsi3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- subvsi3.c - Implement __subvsi3 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __subvsi3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a - b */ +// Returns: a - b -/* Effects: aborts if a - b overflows */ +// Effects: aborts if a - b overflows COMPILER_RT_ABI si_int __subvsi3(si_int a, si_int b) { si_int s = (su_int)a - (su_int)b; diff --git a/lib/builtins/subvti3.c b/lib/builtins/subvti3.c index 9d554c1db..91ac18834 100644 --- a/lib/builtins/subvti3.c +++ b/lib/builtins/subvti3.c @@ -1,23 +1,22 @@ -/* ===-- subvti3.c - Implement __subvti3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __subvti3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- subvti3.c - Implement __subvti3 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __subvti3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: a - b */ +// Returns: a - b -/* Effects: aborts if a - b overflows */ +// Effects: aborts if a - b overflows COMPILER_RT_ABI ti_int __subvti3(ti_int a, ti_int b) { ti_int s = (tu_int)a - (tu_int)b; @@ -31,4 +30,4 @@ COMPILER_RT_ABI ti_int __subvti3(ti_int a, ti_int b) { return s; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/trampoline_setup.c b/lib/builtins/trampoline_setup.c index c287325fc..a62431723 100644 --- a/lib/builtins/trampoline_setup.c +++ b/lib/builtins/trampoline_setup.c @@ -1,46 +1,43 @@ -/* ===----- trampoline_setup.c - Implement __trampoline_setup -------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - */ +//===----- trampoline_setup.c - Implement __trampoline_setup -------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// #include "int_lib.h" extern void __clear_cache(void *start, void *end); -/* - * The ppc compiler generates calls to __trampoline_setup() when creating - * trampoline functions on the stack for use with nested functions. - * This function creates a custom 40-byte trampoline function on the stack - * which loads r11 with a pointer to the outer function's locals - * and then jumps to the target nested function. - */ +// The ppc compiler generates calls to __trampoline_setup() when creating +// trampoline functions on the stack for use with nested functions. +// This function creates a custom 40-byte trampoline function on the stack +// which loads r11 with a pointer to the outer function's locals +// and then jumps to the target nested function. #if __ppc__ && !defined(__powerpc64__) COMPILER_RT_ABI void __trampoline_setup(uint32_t *trampOnStack, int trampSizeAllocated, const void *realFunc, void *localsPtr) { - /* should never happen, but if compiler did not allocate */ - /* enough space on stack for the trampoline, abort */ + // should never happen, but if compiler did not allocate + // enough space on stack for the trampoline, abort if (trampSizeAllocated < 40) compilerrt_abort(); - /* create trampoline */ - trampOnStack[0] = 0x7c0802a6; /* mflr r0 */ - trampOnStack[1] = 0x4800000d; /* bl Lbase */ + // create trampoline + trampOnStack[0] = 0x7c0802a6; // mflr r0 + trampOnStack[1] = 0x4800000d; // bl Lbase trampOnStack[2] = (uint32_t)realFunc; trampOnStack[3] = (uint32_t)localsPtr; - trampOnStack[4] = 0x7d6802a6; /* Lbase: mflr r11 */ - trampOnStack[5] = 0x818b0000; /* lwz r12,0(r11) */ - trampOnStack[6] = 0x7c0803a6; /* mtlr r0 */ - trampOnStack[7] = 0x7d8903a6; /* mtctr r12 */ - trampOnStack[8] = 0x816b0004; /* lwz r11,4(r11) */ - trampOnStack[9] = 0x4e800420; /* bctr */ + trampOnStack[4] = 0x7d6802a6; // Lbase: mflr r11 + trampOnStack[5] = 0x818b0000; // lwz r12,0(r11) + trampOnStack[6] = 0x7c0803a6; // mtlr r0 + trampOnStack[7] = 0x7d8903a6; // mtctr r12 + trampOnStack[8] = 0x816b0004; // lwz r11,4(r11) + trampOnStack[9] = 0x4e800420; // bctr - /* clear instruction cache */ + // clear instruction cache __clear_cache(trampOnStack, &trampOnStack[10]); } -#endif /* __ppc__ && !defined(__powerpc64__) */ +#endif // __ppc__ && !defined(__powerpc64__) diff --git a/lib/builtins/ucmpdi2.c b/lib/builtins/ucmpdi2.c index b31e23a29..0f2edde83 100644 --- a/lib/builtins/ucmpdi2.c +++ b/lib/builtins/ucmpdi2.c @@ -1,22 +1,20 @@ -/* ===-- ucmpdi2.c - Implement __ucmpdi2 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __ucmpdi2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- ucmpdi2.c - Implement __ucmpdi2 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __ucmpdi2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: if (a < b) returns 0 - * if (a == b) returns 1 - * if (a > b) returns 2 - */ +// Returns: if (a < b) returns 0 +// if (a == b) returns 1 +// if (a > b) returns 2 COMPILER_RT_ABI si_int __ucmpdi2(du_int a, du_int b) { udwords x; @@ -35,10 +33,9 @@ COMPILER_RT_ABI si_int __ucmpdi2(du_int a, du_int b) { } #ifdef __ARM_EABI__ -/* Returns: if (a < b) returns -1 - * if (a == b) returns 0 - * if (a > b) returns 1 - */ +// Returns: if (a < b) returns -1 +// if (a == b) returns 0 +// if (a > b) returns 1 COMPILER_RT_ABI si_int __aeabi_ulcmp(di_int a, di_int b) { return __ucmpdi2(a, b) - 1; } diff --git a/lib/builtins/ucmpti2.c b/lib/builtins/ucmpti2.c index 104099e92..4eb6655b0 100644 --- a/lib/builtins/ucmpti2.c +++ b/lib/builtins/ucmpti2.c @@ -1,24 +1,22 @@ -/* ===-- ucmpti2.c - Implement __ucmpti2 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __ucmpti2 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- ucmpti2.c - Implement __ucmpti2 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __ucmpti2 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: if (a < b) returns 0 - * if (a == b) returns 1 - * if (a > b) returns 2 - */ +// Returns: if (a < b) returns 0 +// if (a == b) returns 1 +// if (a > b) returns 2 COMPILER_RT_ABI si_int __ucmpti2(tu_int a, tu_int b) { utwords x; @@ -36,4 +34,4 @@ COMPILER_RT_ABI si_int __ucmpti2(tu_int a, tu_int b) { return 1; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/udivdi3.c b/lib/builtins/udivdi3.c index 5b20c5f0a..a23139ec9 100644 --- a/lib/builtins/udivdi3.c +++ b/lib/builtins/udivdi3.c @@ -1,19 +1,18 @@ -/* ===-- udivdi3.c - Implement __udivdi3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __udivdi3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- udivdi3.c - Implement __udivdi3 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __udivdi3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a / b */ +// Returns: a / b COMPILER_RT_ABI du_int __udivdi3(du_int a, du_int b) { return __udivmoddi4(a, b, 0); diff --git a/lib/builtins/udivmoddi4.c b/lib/builtins/udivmoddi4.c index 65f7cde22..2914cc0fb 100644 --- a/lib/builtins/udivmoddi4.c +++ b/lib/builtins/udivmoddi4.c @@ -1,23 +1,21 @@ -/* ===-- udivmoddi4.c - Implement __udivmoddi4 -----------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __udivmoddi4 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- udivmoddi4.c - Implement __udivmoddi4 -----------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __udivmoddi4 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Effects: if rem != 0, *rem = a % b - * Returns: a / b - */ +// Effects: if rem != 0, *rem = a % b +// Returns: a / b -/* Translated from Figure 3-40 of The PowerPC Compiler Writer's Guide */ +// Translated from Figure 3-40 of The PowerPC Compiler Writer's Guide COMPILER_RT_ABI du_int __udivmoddi4(du_int a, du_int b, du_int *rem) { const unsigned n_uword_bits = sizeof(su_int) * CHAR_BIT; @@ -29,42 +27,38 @@ COMPILER_RT_ABI du_int __udivmoddi4(du_int a, du_int b, du_int *rem) { udwords q; udwords r; unsigned sr; - /* special cases, X is unknown, K != 0 */ + // special cases, X is unknown, K != 0 if (n.s.high == 0) { if (d.s.high == 0) { - /* 0 X - * --- - * 0 X - */ + // 0 X + // --- + // 0 X if (rem) *rem = n.s.low % d.s.low; return n.s.low / d.s.low; } - /* 0 X - * --- - * K X - */ + // 0 X + // --- + // K X if (rem) *rem = n.s.low; return 0; } - /* n.s.high != 0 */ + // n.s.high != 0 if (d.s.low == 0) { if (d.s.high == 0) { - /* K X - * --- - * 0 0 - */ + // K X + // --- + // 0 0 if (rem) *rem = n.s.high % d.s.low; return n.s.high / d.s.low; } - /* d.s.high != 0 */ + // d.s.high != 0 if (n.s.low == 0) { - /* K 0 - * --- - * K 0 - */ + // K 0 + // --- + // K 0 if (rem) { r.s.high = n.s.high % d.s.high; r.s.low = 0; @@ -72,12 +66,10 @@ COMPILER_RT_ABI du_int __udivmoddi4(du_int a, du_int b, du_int *rem) { } return n.s.high / d.s.high; } - /* K K - * --- - * K 0 - */ - if ((d.s.high & (d.s.high - 1)) == 0) /* if d is a power of 2 */ - { + // K K + // --- + // K 0 + if ((d.s.high & (d.s.high - 1)) == 0) /* if d is a power of 2 */ { if (rem) { r.s.low = n.s.low; r.s.high = n.s.high & (d.s.high - 1); @@ -85,34 +77,30 @@ COMPILER_RT_ABI du_int __udivmoddi4(du_int a, du_int b, du_int *rem) { } return n.s.high >> __builtin_ctz(d.s.high); } - /* K K - * --- - * K 0 - */ + // K K + // --- + // K 0 sr = __builtin_clz(d.s.high) - __builtin_clz(n.s.high); - /* 0 <= sr <= n_uword_bits - 2 or sr large */ + // 0 <= sr <= n_uword_bits - 2 or sr large if (sr > n_uword_bits - 2) { if (rem) *rem = n.all; return 0; } ++sr; - /* 1 <= sr <= n_uword_bits - 1 */ - /* q.all = n.all << (n_udword_bits - sr); */ + // 1 <= sr <= n_uword_bits - 1 + // q.all = n.all << (n_udword_bits - sr); q.s.low = 0; q.s.high = n.s.low << (n_uword_bits - sr); - /* r.all = n.all >> sr; */ + // r.all = n.all >> sr; r.s.high = n.s.high >> sr; r.s.low = (n.s.high << (n_uword_bits - sr)) | (n.s.low >> sr); - } else /* d.s.low != 0 */ - { + } else /* d.s.low != 0 */ { if (d.s.high == 0) { - /* K X - * --- - * 0 K - */ - if ((d.s.low & (d.s.low - 1)) == 0) /* if d is a power of 2 */ - { + // K X + // --- + // 0 K + if ((d.s.low & (d.s.low - 1)) == 0) /* if d is a power of 2 */ { if (rem) *rem = n.s.low & (d.s.low - 1); if (d.s.low == 1) @@ -122,28 +110,24 @@ COMPILER_RT_ABI du_int __udivmoddi4(du_int a, du_int b, du_int *rem) { q.s.low = (n.s.high << (n_uword_bits - sr)) | (n.s.low >> sr); return q.all; } - /* K X - * --- - * 0 K - */ + // K X + // --- + // 0 K sr = 1 + n_uword_bits + __builtin_clz(d.s.low) - __builtin_clz(n.s.high); - /* 2 <= sr <= n_udword_bits - 1 - * q.all = n.all << (n_udword_bits - sr); - * r.all = n.all >> sr; - */ + // 2 <= sr <= n_udword_bits - 1 + // q.all = n.all << (n_udword_bits - sr); + // r.all = n.all >> sr; if (sr == n_uword_bits) { q.s.low = 0; q.s.high = n.s.low; r.s.high = 0; r.s.low = n.s.high; - } else if (sr < n_uword_bits) // 2 <= sr <= n_uword_bits - 1 - { + } else if (sr < n_uword_bits) /* 2 <= sr <= n_uword_bits - 1 */ { q.s.low = 0; q.s.high = n.s.low << (n_uword_bits - sr); r.s.high = n.s.high >> sr; r.s.low = (n.s.high << (n_uword_bits - sr)) | (n.s.low >> sr); - } else // n_uword_bits + 1 <= sr <= n_udword_bits - 1 - { + } else /* n_uword_bits + 1 <= sr <= n_udword_bits - 1 */ { q.s.low = n.s.low << (n_udword_bits - sr); q.s.high = (n.s.high << (n_udword_bits - sr)) | (n.s.low >> (sr - n_uword_bits)); @@ -151,20 +135,19 @@ COMPILER_RT_ABI du_int __udivmoddi4(du_int a, du_int b, du_int *rem) { r.s.low = n.s.high >> (sr - n_uword_bits); } } else { - /* K X - * --- - * K K - */ + // K X + // --- + // K K sr = __builtin_clz(d.s.high) - __builtin_clz(n.s.high); - /* 0 <= sr <= n_uword_bits - 1 or sr large */ + // 0 <= sr <= n_uword_bits - 1 or sr large if (sr > n_uword_bits - 1) { if (rem) *rem = n.all; return 0; } ++sr; - /* 1 <= sr <= n_uword_bits */ - /* q.all = n.all << (n_udword_bits - sr); */ + // 1 <= sr <= n_uword_bits + // q.all = n.all << (n_udword_bits - sr); q.s.low = 0; if (sr == n_uword_bits) { q.s.high = n.s.low; @@ -177,26 +160,24 @@ COMPILER_RT_ABI du_int __udivmoddi4(du_int a, du_int b, du_int *rem) { } } } - /* Not a special case - * q and r are initialized with: - * q.all = n.all << (n_udword_bits - sr); - * r.all = n.all >> sr; - * 1 <= sr <= n_udword_bits - 1 - */ + // Not a special case + // q and r are initialized with: + // q.all = n.all << (n_udword_bits - sr); + // r.all = n.all >> sr; + // 1 <= sr <= n_udword_bits - 1 su_int carry = 0; for (; sr > 0; --sr) { - /* r:q = ((r:q) << 1) | carry */ + // r:q = ((r:q) << 1) | carry r.s.high = (r.s.high << 1) | (r.s.low >> (n_uword_bits - 1)); r.s.low = (r.s.low << 1) | (q.s.high >> (n_uword_bits - 1)); q.s.high = (q.s.high << 1) | (q.s.low >> (n_uword_bits - 1)); q.s.low = (q.s.low << 1) | carry; - /* carry = 0; - * if (r.all >= d.all) - * { - * r.all -= d.all; - * carry = 1; - * } - */ + // carry = 0; + // if (r.all >= d.all) + // { + // r.all -= d.all; + // carry = 1; + // } const di_int s = (di_int)(d.all - r.all - 1) >> (n_udword_bits - 1); carry = s & 1; r.all -= d.all & s; diff --git a/lib/builtins/udivmodsi4.c b/lib/builtins/udivmodsi4.c index 5fed67911..753ad6dd9 100644 --- a/lib/builtins/udivmodsi4.c +++ b/lib/builtins/udivmodsi4.c @@ -1,19 +1,18 @@ -/*===-- udivmodsi4.c - Implement __udivmodsi4 ------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __udivmodsi4 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- udivmodsi4.c - Implement __udivmodsi4 -----------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __udivmodsi4 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a / b, *rem = a % b */ +// Returns: a / b, *rem = a % b COMPILER_RT_ABI su_int __udivmodsi4(su_int a, su_int b, su_int *rem) { si_int d = __udivsi3(a, b); diff --git a/lib/builtins/udivmodti4.c b/lib/builtins/udivmodti4.c index 4aec819ab..dd14a8b57 100644 --- a/lib/builtins/udivmodti4.c +++ b/lib/builtins/udivmodti4.c @@ -1,25 +1,23 @@ -/* ===-- udivmodti4.c - Implement __udivmodti4 -----------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __udivmodti4 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- udivmodti4.c - Implement __udivmodti4 -----------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __udivmodti4 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Effects: if rem != 0, *rem = a % b - * Returns: a / b - */ +// Effects: if rem != 0, *rem = a % b +// Returns: a / b -/* Translated from Figure 3-40 of The PowerPC Compiler Writer's Guide */ +// Translated from Figure 3-40 of The PowerPC Compiler Writer's Guide COMPILER_RT_ABI tu_int __udivmodti4(tu_int a, tu_int b, tu_int *rem) { const unsigned n_udword_bits = sizeof(du_int) * CHAR_BIT; @@ -31,42 +29,38 @@ COMPILER_RT_ABI tu_int __udivmodti4(tu_int a, tu_int b, tu_int *rem) { utwords q; utwords r; unsigned sr; - /* special cases, X is unknown, K != 0 */ + // special cases, X is unknown, K != 0 if (n.s.high == 0) { if (d.s.high == 0) { - /* 0 X - * --- - * 0 X - */ + // 0 X + // --- + // 0 X if (rem) *rem = n.s.low % d.s.low; return n.s.low / d.s.low; } - /* 0 X - * --- - * K X - */ + // 0 X + // --- + // K X if (rem) *rem = n.s.low; return 0; } - /* n.s.high != 0 */ + // n.s.high != 0 if (d.s.low == 0) { if (d.s.high == 0) { - /* K X - * --- - * 0 0 - */ + // K X + // --- + // 0 0 if (rem) *rem = n.s.high % d.s.low; return n.s.high / d.s.low; } - /* d.s.high != 0 */ + // d.s.high != 0 if (n.s.low == 0) { - /* K 0 - * --- - * K 0 - */ + // K 0 + // --- + // K 0 if (rem) { r.s.high = n.s.high % d.s.high; r.s.low = 0; @@ -74,12 +68,10 @@ COMPILER_RT_ABI tu_int __udivmodti4(tu_int a, tu_int b, tu_int *rem) { } return n.s.high / d.s.high; } - /* K K - * --- - * K 0 - */ - if ((d.s.high & (d.s.high - 1)) == 0) /* if d is a power of 2 */ - { + // K K + // --- + // K 0 + if ((d.s.high & (d.s.high - 1)) == 0) /* if d is a power of 2 */ { if (rem) { r.s.low = n.s.low; r.s.high = n.s.high & (d.s.high - 1); @@ -87,34 +79,30 @@ COMPILER_RT_ABI tu_int __udivmodti4(tu_int a, tu_int b, tu_int *rem) { } return n.s.high >> __builtin_ctzll(d.s.high); } - /* K K - * --- - * K 0 - */ + // K K + // --- + // K 0 sr = __builtin_clzll(d.s.high) - __builtin_clzll(n.s.high); - /* 0 <= sr <= n_udword_bits - 2 or sr large */ + // 0 <= sr <= n_udword_bits - 2 or sr large if (sr > n_udword_bits - 2) { if (rem) *rem = n.all; return 0; } ++sr; - /* 1 <= sr <= n_udword_bits - 1 */ - /* q.all = n.all << (n_utword_bits - sr); */ + // 1 <= sr <= n_udword_bits - 1 + // q.all = n.all << (n_utword_bits - sr); q.s.low = 0; q.s.high = n.s.low << (n_udword_bits - sr); - /* r.all = n.all >> sr; */ + // r.all = n.all >> sr; r.s.high = n.s.high >> sr; r.s.low = (n.s.high << (n_udword_bits - sr)) | (n.s.low >> sr); - } else /* d.s.low != 0 */ - { + } else /* d.s.low != 0 */ { if (d.s.high == 0) { - /* K X - * --- - * 0 K - */ - if ((d.s.low & (d.s.low - 1)) == 0) /* if d is a power of 2 */ - { + // K X + // --- + // 0 K + if ((d.s.low & (d.s.low - 1)) == 0) /* if d is a power of 2 */ { if (rem) *rem = n.s.low & (d.s.low - 1); if (d.s.low == 1) @@ -124,29 +112,25 @@ COMPILER_RT_ABI tu_int __udivmodti4(tu_int a, tu_int b, tu_int *rem) { q.s.low = (n.s.high << (n_udword_bits - sr)) | (n.s.low >> sr); return q.all; } - /* K X - * --- - * 0 K - */ + // K X + // --- + // 0 K sr = 1 + n_udword_bits + __builtin_clzll(d.s.low) - __builtin_clzll(n.s.high); - /* 2 <= sr <= n_utword_bits - 1 - * q.all = n.all << (n_utword_bits - sr); - * r.all = n.all >> sr; - */ + // 2 <= sr <= n_utword_bits - 1 + // q.all = n.all << (n_utword_bits - sr); + // r.all = n.all >> sr; if (sr == n_udword_bits) { q.s.low = 0; q.s.high = n.s.low; r.s.high = 0; r.s.low = n.s.high; - } else if (sr < n_udword_bits) // 2 <= sr <= n_udword_bits - 1 - { + } else if (sr < n_udword_bits) /* 2 <= sr <= n_udword_bits - 1 */ { q.s.low = 0; q.s.high = n.s.low << (n_udword_bits - sr); r.s.high = n.s.high >> sr; r.s.low = (n.s.high << (n_udword_bits - sr)) | (n.s.low >> sr); - } else // n_udword_bits + 1 <= sr <= n_utword_bits - 1 - { + } else /* n_udword_bits + 1 <= sr <= n_utword_bits - 1 */ { q.s.low = n.s.low << (n_utword_bits - sr); q.s.high = (n.s.high << (n_utword_bits - sr)) | (n.s.low >> (sr - n_udword_bits)); @@ -154,22 +138,20 @@ COMPILER_RT_ABI tu_int __udivmodti4(tu_int a, tu_int b, tu_int *rem) { r.s.low = n.s.high >> (sr - n_udword_bits); } } else { - /* K X - * --- - * K K - */ + // K X + // --- + // K K sr = __builtin_clzll(d.s.high) - __builtin_clzll(n.s.high); - /*0 <= sr <= n_udword_bits - 1 or sr large */ + // 0 <= sr <= n_udword_bits - 1 or sr large if (sr > n_udword_bits - 1) { if (rem) *rem = n.all; return 0; } ++sr; - /* 1 <= sr <= n_udword_bits - * q.all = n.all << (n_utword_bits - sr); - * r.all = n.all >> sr; - */ + // 1 <= sr <= n_udword_bits + // q.all = n.all << (n_utword_bits - sr); + // r.all = n.all >> sr; q.s.low = 0; if (sr == n_udword_bits) { q.s.high = n.s.low; @@ -182,26 +164,24 @@ COMPILER_RT_ABI tu_int __udivmodti4(tu_int a, tu_int b, tu_int *rem) { } } } - /* Not a special case - * q and r are initialized with: - * q.all = n.all << (n_utword_bits - sr); - * r.all = n.all >> sr; - * 1 <= sr <= n_utword_bits - 1 - */ + // Not a special case + // q and r are initialized with: + // q.all = n.all << (n_utword_bits - sr); + // r.all = n.all >> sr; + // 1 <= sr <= n_utword_bits - 1 su_int carry = 0; for (; sr > 0; --sr) { - /* r:q = ((r:q) << 1) | carry */ + // r:q = ((r:q) << 1) | carry r.s.high = (r.s.high << 1) | (r.s.low >> (n_udword_bits - 1)); r.s.low = (r.s.low << 1) | (q.s.high >> (n_udword_bits - 1)); q.s.high = (q.s.high << 1) | (q.s.low >> (n_udword_bits - 1)); q.s.low = (q.s.low << 1) | carry; - /* carry = 0; - * if (r.all >= d.all) - * { - * r.all -= d.all; - * carry = 1; - * } - */ + // carry = 0; + // if (r.all >= d.all) + // { + // r.all -= d.all; + // carry = 1; + // } const ti_int s = (ti_int)(d.all - r.all - 1) >> (n_utword_bits - 1); carry = s & 1; r.all -= d.all & s; @@ -212,4 +192,4 @@ COMPILER_RT_ABI tu_int __udivmodti4(tu_int a, tu_int b, tu_int *rem) { return q.all; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/udivsi3.c b/lib/builtins/udivsi3.c index 28fec70b6..b5f326ad7 100644 --- a/lib/builtins/udivsi3.c +++ b/lib/builtins/udivsi3.c @@ -1,56 +1,54 @@ -/* ===-- udivsi3.c - Implement __udivsi3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __udivsi3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- udivsi3.c - Implement __udivsi3 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __udivsi3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a / b */ +// Returns: a / b -/* Translated from Figure 3-40 of The PowerPC Compiler Writer's Guide */ +// Translated from Figure 3-40 of The PowerPC Compiler Writer's Guide -/* This function should not call __divsi3! */ +// This function should not call __divsi3! COMPILER_RT_ABI su_int __udivsi3(su_int n, su_int d) { const unsigned n_uword_bits = sizeof(su_int) * CHAR_BIT; su_int q; su_int r; unsigned sr; - /* special cases */ + // special cases if (d == 0) - return 0; /* ?! */ + return 0; // ?! if (n == 0) return 0; sr = __builtin_clz(d) - __builtin_clz(n); - /* 0 <= sr <= n_uword_bits - 1 or sr large */ - if (sr > n_uword_bits - 1) /* d > r */ + // 0 <= sr <= n_uword_bits - 1 or sr large + if (sr > n_uword_bits - 1) // d > r return 0; - if (sr == n_uword_bits - 1) /* d == 1 */ + if (sr == n_uword_bits - 1) // d == 1 return n; ++sr; - /* 1 <= sr <= n_uword_bits - 1 */ - /* Not a special case */ + // 1 <= sr <= n_uword_bits - 1 + // Not a special case q = n << (n_uword_bits - sr); r = n >> sr; su_int carry = 0; for (; sr > 0; --sr) { - /* r:q = ((r:q) << 1) | carry */ + // r:q = ((r:q) << 1) | carry r = (r << 1) | (q >> (n_uword_bits - 1)); q = (q << 1) | carry; - /* carry = 0; - * if (r.all >= d.all) - * { - * r.all -= d.all; - * carry = 1; - * } - */ + // carry = 0; + // if (r.all >= d.all) + // { + // r.all -= d.all; + // carry = 1; + // } const si_int s = (si_int)(d - r - 1) >> (n_uword_bits - 1); carry = s & 1; r -= d & s; diff --git a/lib/builtins/udivti3.c b/lib/builtins/udivti3.c index 482303ec9..4c82040b8 100644 --- a/lib/builtins/udivti3.c +++ b/lib/builtins/udivti3.c @@ -1,24 +1,23 @@ -/* ===-- udivti3.c - Implement __udivti3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __udivti3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- udivti3.c - Implement __udivti3 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __udivti3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: a / b */ +// Returns: a / b COMPILER_RT_ABI tu_int __udivti3(tu_int a, tu_int b) { return __udivmodti4(a, b, 0); } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/umoddi3.c b/lib/builtins/umoddi3.c index 31c21585f..965cf8fc0 100644 --- a/lib/builtins/umoddi3.c +++ b/lib/builtins/umoddi3.c @@ -1,19 +1,18 @@ -/* ===-- umoddi3.c - Implement __umoddi3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __umoddi3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- umoddi3.c - Implement __umoddi3 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __umoddi3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a % b */ +// Returns: a % b COMPILER_RT_ABI du_int __umoddi3(du_int a, du_int b) { du_int r; diff --git a/lib/builtins/umodsi3.c b/lib/builtins/umodsi3.c index bd95539be..ce9abcd94 100644 --- a/lib/builtins/umodsi3.c +++ b/lib/builtins/umodsi3.c @@ -1,19 +1,18 @@ -/* ===-- umodsi3.c - Implement __umodsi3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __umodsi3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- umodsi3.c - Implement __umodsi3 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __umodsi3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" -/* Returns: a % b */ +// Returns: a % b COMPILER_RT_ABI su_int __umodsi3(su_int a, su_int b) { return a - __udivsi3(a, b) * b; diff --git a/lib/builtins/umodti3.c b/lib/builtins/umodti3.c index 42616c5d7..8cc5cb6b8 100644 --- a/lib/builtins/umodti3.c +++ b/lib/builtins/umodti3.c @@ -1,21 +1,20 @@ -/* ===-- umodti3.c - Implement __umodti3 -----------------------------------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===----------------------------------------------------------------------=== - * - * This file implements __umodti3 for the compiler_rt library. - * - * ===----------------------------------------------------------------------=== - */ +//===-- umodti3.c - Implement __umodti3 -----------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// This file implements __umodti3 for the compiler_rt library. +// +//===----------------------------------------------------------------------===// #include "int_lib.h" #ifdef CRT_HAS_128BIT -/* Returns: a % b */ +// Returns: a % b COMPILER_RT_ABI tu_int __umodti3(tu_int a, tu_int b) { tu_int r; @@ -23,4 +22,4 @@ COMPILER_RT_ABI tu_int __umodti3(tu_int a, tu_int b) { return r; } -#endif /* CRT_HAS_128BIT */ +#endif // CRT_HAS_128BIT diff --git a/lib/builtins/unwind-ehabi-helpers.h b/lib/builtins/unwind-ehabi-helpers.h index 33d1f8abd..1b48cdb75 100644 --- a/lib/builtins/unwind-ehabi-helpers.h +++ b/lib/builtins/unwind-ehabi-helpers.h @@ -1,39 +1,37 @@ -/* ===-- arm-ehabi-helpers.h - Supplementary ARM EHABI declarations --------=== - * - * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - * - * ===--------------------------------------------------------------------=== */ +//===-- arm-ehabi-helpers.h - Supplementary ARM EHABI declarations --------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===--------------------------------------------------------------------===// #ifndef UNWIND_EHABI_HELPERS_H #define UNWIND_EHABI_HELPERS_H #include <stdint.h> -/* NOTE: see reasoning for this inclusion below */ +// NOTE: see reasoning for this inclusion below #include <unwind.h> #if !defined(__ARM_EABI_UNWINDER__) -/* - * NOTE: _URC_OK, _URC_FAILURE must be present as preprocessor tokens. This - * allows for a substitution of a constant which can be cast into the - * appropriate enumerated type. This header is expected to always be included - * AFTER unwind.h (which is why it is forcefully included above). This ensures - * that we do not overwrite the token for the enumeration. Subsequent uses of - * the token would be clean to rewrite with constant values. - * - * The typedef redeclaration should be safe. Due to the protection granted to - * us by the `__ARM_EABI_UNWINDER__` above, we are guaranteed that we are in a - * header not vended by gcc. The HP unwinder (being an itanium unwinder) does - * not support EHABI, and the GNU unwinder, derived from the HP unwinder, also - * does not support EHABI as of the introduction of this header. As such, we - * are fairly certain that we are in the LLVM case. Here, _Unwind_State is a - * typedef, and so we can get away with a redeclaration. - * - * Guarded redefinitions of the needed unwind state prevent the redefinition of - * those states. - */ +// NOTE: _URC_OK, _URC_FAILURE must be present as preprocessor tokens. This +// allows for a substitution of a constant which can be cast into the +// appropriate enumerated type. This header is expected to always be included +// AFTER unwind.h (which is why it is forcefully included above). This ensures +// that we do not overwrite the token for the enumeration. Subsequent uses of +// the token would be clean to rewrite with constant values. +// +// The typedef redeclaration should be safe. Due to the protection granted to +// us by the `__ARM_EABI_UNWINDER__` above, we are guaranteed that we are in a +// header not vended by gcc. The HP unwinder (being an itanium unwinder) does +// not support EHABI, and the GNU unwinder, derived from the HP unwinder, also +// does not support EHABI as of the introduction of this header. As such, we +// are fairly certain that we are in the LLVM case. Here, _Unwind_State is a +// typedef, and so we can get away with a redeclaration. +// +// Guarded redefinitions of the needed unwind state prevent the redefinition of +// those states. #define _URC_OK 0 #define _URC_FAILURE 9 diff --git a/lib/builtins/x86_64/floatdidf.c b/lib/builtins/x86_64/floatdidf.c index 36d7e04cb..f83f53a38 100644 --- a/lib/builtins/x86_64/floatdidf.c +++ b/lib/builtins/x86_64/floatdidf.c @@ -1,9 +1,8 @@ -/* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - */ +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -/* double __floatdidf(di_int a); */ +// double __floatdidf(di_int a); #if defined(__x86_64__) || defined(_M_X64) @@ -11,4 +10,4 @@ double __floatdidf(int64_t a) { return (double)a; } -#endif /* __x86_64__ */ +#endif // __x86_64__ diff --git a/lib/builtins/x86_64/floatdisf.c b/lib/builtins/x86_64/floatdisf.c index a557848d8..06c118cfa 100644 --- a/lib/builtins/x86_64/floatdisf.c +++ b/lib/builtins/x86_64/floatdisf.c @@ -1,7 +1,6 @@ -/* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - */ +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception #if defined(__x86_64__) || defined(_M_X64) @@ -9,4 +8,4 @@ float __floatdisf(int64_t a) { return (float)a; } -#endif /* __x86_64__ */ +#endif // __x86_64__ diff --git a/lib/builtins/x86_64/floatdixf.c b/lib/builtins/x86_64/floatdixf.c index 97cc9a0a4..cf8450ce6 100644 --- a/lib/builtins/x86_64/floatdixf.c +++ b/lib/builtins/x86_64/floatdixf.c @@ -1,9 +1,8 @@ -/* Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. - * See https://llvm.org/LICENSE.txt for license information. - * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception - */ +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -/* long double __floatdixf(di_int a); */ +// long double __floatdixf(di_int a); #ifdef __x86_64__ @@ -11,4 +10,4 @@ long double __floatdixf(int64_t a) { return (long double)a; } -#endif /* __i386__ */ +#endif // __i386__ diff --git a/lib/builtins/x86_64/floatundisf.S b/lib/builtins/x86_64/floatundisf.S index 252e30fa9..246bdff5a 100644 --- a/lib/builtins/x86_64/floatundisf.S +++ b/lib/builtins/x86_64/floatundisf.S @@ -24,7 +24,7 @@ DEFINE_COMPILERRT_FUNCTION(__floatundisf) js 1f cvtsi2ssq %rdi, %xmm0 ret - + 1: andq %rdi, %rsi shrq %rdi orq %rsi, %rdi diff --git a/lib/builtins/x86_64/floatundixf.S b/lib/builtins/x86_64/floatundixf.S index a0f0404be..9e3bcedcb 100644 --- a/lib/builtins/x86_64/floatundixf.S +++ b/lib/builtins/x86_64/floatundixf.S @@ -58,7 +58,7 @@ DEFINE_COMPILERRT_FUNCTION(__floatundixf) orq REL_ADDR(twop52), %rsi // 2^52 + lo (as a double) movq %rdi, -8(%rsp) movq %rsi, -16(%rsp) - fldl REL_ADDR(twop84_plus_twop52_neg) + fldl REL_ADDR(twop84_plus_twop52_neg) faddl -8(%rsp) // hi - 2^52 (as double extended, no rounding occurs) faddl -16(%rsp) // hi + lo (as double extended) ret |