[ARM] Implement support for ACLE Coprocessor MCRR and MRRC intrinsics

gcc/ChangeLog:
2017-01-06  Andre Vieira  <andre.simoesdiasvieira@arm.com>

	* config/arm/arm.md (<mcrr>): New.
	(<mrrc>): New.
	* config/arm/arm.c (arm_arch5te): New.
	(arm_option_override): Set arm_arch5te.
	(arm_coproc_builtin_available): Add support for mcrr, mcrr2, mrrc
	and mrrc2.
	* config/arm/arm-builtins.c (MCRR_QUALIFIERS): Define to...
	(arm_mcrr_qualifiers): ... this. New.
	(MRRC_QUALIFIERS): Define to...
	(arm_mrrc_qualifiers): ... this. New.
	* config/arm/arm_acle.h (__arm_mcrr, __arm_mcrr2, __arm_mrrc,
	__arm_mrrc2): New.
	* config/arm/arm_acle_builtins.def (mcrr, mcrr2, mrrc, mrrc2): New.
	* config/arm/iterators.md (MCRRI, mcrr, MCRR): New.
	(MRRCI, mrrc, MRRC): New.
	* config/arm/unspecs.md (VUNSPEC_MCRR, VUNSPEC_MCRR2, VUNSPEC_MRRC,
	VUNSPEC_MRRC2): New.

gcc/testsuite/ChangeLog:
2017-01-06  Andre Vieira  <andre.simoesdiasvieira@arm.com>

	* gcc.target/arm/acle/mcrr: New.
	* gcc.target/arm/acle/mcrr2: New.
	* gcc.target/arm/acle/mrrc: New.
	* gcc.target/arm/acle/mrrc2: New.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@244175 138bc75d-0d04-0410-961f-82ee72b054a4

7 files changed, 120 insertions, 0 deletions

diff --git a/gcc/config/arm/arm-builtins.c b/gcc/config/arm/arm-builtins.c
index 1a983b27961..689219c1923 100644
--- a/gcc/config/arm/arm-builtins.c
+++ b/gcc/config/arm/arm-builtins.c
@@ -217,6 +217,24 @@ arm_mrc_qualifiers[SIMD_MAX_BUILTIN_ARGS]
       qualifier_unsigned_immediate, qualifier_unsigned_immediate };
 #define MRC_QUALIFIERS \
   (arm_mrc_qualifiers)
+
+/* void (unsigned immediate, unsigned immediate,  T, unsigned immediate).  */
+static enum arm_type_qualifiers
+arm_mcrr_qualifiers[SIMD_MAX_BUILTIN_ARGS]
+  = { qualifier_void, qualifier_unsigned_immediate,
+      qualifier_unsigned_immediate, qualifier_none,
+      qualifier_unsigned_immediate };
+#define MCRR_QUALIFIERS \
+  (arm_mcrr_qualifiers)
+
+/* T (unsigned immediate, unsigned immediate, unsigned immediate).  */
+static enum arm_type_qualifiers
+arm_mrrc_qualifiers[SIMD_MAX_BUILTIN_ARGS]
+  = { qualifier_none, qualifier_unsigned_immediate,
+      qualifier_unsigned_immediate, qualifier_unsigned_immediate };
+#define MRRC_QUALIFIERS \
+  (arm_mrrc_qualifiers)
+
 /* The first argument (return type) of a store should be void type,
    which we represent with qualifier_void.  Their first operand will be
    a DImode pointer to the location to store to, so we must use
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index e376ab3f4bf..ccdf1ab8024 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -814,6 +814,9 @@ int arm_arch5 = 0;
 /* Nonzero if this chip supports the ARM Architecture 5E extensions.  */
 int arm_arch5e = 0;
 
+/* Nonzero if this chip supports the ARM Architecture 5TE extensions.  */
+int arm_arch5te = 0;
+
 /* Nonzero if this chip supports the ARM Architecture 6 extensions.  */
 int arm_arch6 = 0;
 
@@ -3372,6 +3375,8 @@ arm_option_override (void)
   arm_arch4t = arm_arch4 && bitmap_bit_p (arm_active_target.isa, isa_bit_thumb);
   arm_arch5 = bitmap_bit_p (arm_active_target.isa, isa_bit_ARMv5);
   arm_arch5e = bitmap_bit_p (arm_active_target.isa, isa_bit_ARMv5e);
+  arm_arch5te = arm_arch5e
+    && bitmap_bit_p (arm_active_target.isa, isa_bit_thumb);
   arm_arch6 = bitmap_bit_p (arm_active_target.isa, isa_bit_ARMv6);
   arm_arch6k = bitmap_bit_p (arm_active_target.isa, isa_bit_ARMv6k);
   arm_arch_notm = bitmap_bit_p (arm_active_target.isa, isa_bit_notm);
@@ -30925,6 +30930,18 @@ arm_coproc_builtin_available (enum unspecv builtin)
 	if (arm_arch5)
 	  return true;
 	break;
+      case VUNSPEC_MCRR:
+      case VUNSPEC_MRRC:
+	/* Only present in ARMv5TE, ARMv6 (but not ARMv6-M), ARMv7* and
+	   ARMv8-{A,M}.  */
+	if (arm_arch6 || arm_arch5te)
+	  return true;
+	break;
+      case VUNSPEC_MCRR2:
+      case VUNSPEC_MRRC2:
+	if (arm_arch6)
+	  return true;
+	break;
       default:
 	gcc_unreachable ();
     }
diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
index 15926f13bac..446fb226f6a 100644
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -12016,6 +12016,37 @@
   [(set_attr "length" "4")
    (set_attr "type" "coproc")])
 
+(define_insn "<mcrr>"
+  [(unspec_volatile [(match_operand:SI 0 "immediate_operand" "n")
+		     (match_operand:SI 1 "immediate_operand" "n")
+		     (match_operand:DI 2 "s_register_operand" "r")
+		     (match_operand:SI 3 "immediate_operand" "n")] MCRRI)
+   (use (match_dup 2))]
+  "arm_coproc_builtin_available (VUNSPEC_<MCRR>)"
+{
+  arm_const_bounds (operands[0], 0, 16);
+  arm_const_bounds (operands[1], 0, 8);
+  arm_const_bounds (operands[3], 0, (1 << 5));
+  return "<mcrr>\\tp%c0, %1, %Q2, %R2, CR%c3";
+}
+  [(set_attr "length" "4")
+   (set_attr "type" "coproc")])
+
+(define_insn "<mrrc>"
+  [(set (match_operand:DI 0 "s_register_operand" "=r")
+	(unspec_volatile [(match_operand:SI 1 "immediate_operand" "n")
+			  (match_operand:SI 2 "immediate_operand" "n")
+			  (match_operand:SI 3 "immediate_operand" "n")] MRRCI))]
+  "arm_coproc_builtin_available (VUNSPEC_<MRRC>)"
+{
+  arm_const_bounds (operands[1], 0, 16);
+  arm_const_bounds (operands[2], 0, 8);
+  arm_const_bounds (operands[3], 0, (1 << 5));
+  return "<mrrc>\\tp%c1, %2, %Q0, %R0, CR%c3";
+}
+  [(set_attr "length" "4")
+   (set_attr "type" "coproc")])
+
 ;; Vector bits common to IWMMXT and Neon
 (include "vec-common.md")
 ;; Load the Intel Wireless Multimedia Extension patterns
diff --git a/gcc/config/arm/arm_acle.h b/gcc/config/arm/arm_acle.h
index a218547bac9..972e28edb86 100644
--- a/gcc/config/arm/arm_acle.h
+++ b/gcc/config/arm/arm_acle.h
@@ -136,6 +136,40 @@ __arm_mrc2 (const unsigned int __coproc, const unsigned int __opc1,
 {
   return __builtin_arm_mrc2 (__coproc, __opc1, __CRn, __CRm, __opc2);
 }
+
+#if __ARM_ARCH >= 6 ||  defined (__ARM_ARCH_5TE__)
+
+__extension__ static __inline void __attribute__ ((__always_inline__))
+__arm_mcrr (const unsigned int __coproc, const unsigned int __opc1,
+	    uint64_t __value, const unsigned int __CRm)
+{
+  return __builtin_arm_mcrr (__coproc, __opc1, __value, __CRm);
+}
+
+__extension__ static __inline uint64_t __attribute__ ((__always_inline__))
+__arm_mrrc (const unsigned int __coproc, const unsigned int __opc1,
+	    const unsigned int __CRm)
+{
+  return __builtin_arm_mrrc (__coproc, __opc1, __CRm);
+}
+
+#if __ARM_ARCH >= 6
+
+__extension__ static __inline void __attribute__ ((__always_inline__))
+__arm_mcrr2 (const unsigned int __coproc, const unsigned int __opc1,
+	    uint64_t __value, const unsigned int __CRm)
+{
+  return __builtin_arm_mcrr2 (__coproc, __opc1, __value, __CRm);
+}
+
+__extension__ static __inline uint64_t __attribute__ ((__always_inline__))
+__arm_mrrc2 (const unsigned int __coproc, const unsigned int __opc1,
+	     const unsigned int __CRm)
+{
+  return __builtin_arm_mrrc2 (__coproc, __opc1,  __CRm);
+}
+#endif /* __ARM_ARCH >= 6.  */
+#endif /* __ARM_ARCH >= 6 ||  defined (__ARM_ARCH_5TE__).  */
 #endif /*  __ARM_ARCH >= 5.  */
 #endif /* (!__thumb__ || __thumb2__) &&  __ARM_ARCH >= 4.  */
 
diff --git a/gcc/config/arm/arm_acle_builtins.def b/gcc/config/arm/arm_acle_builtins.def
index d258f8a3748..bd1f66272c9 100644
--- a/gcc/config/arm/arm_acle_builtins.def
+++ b/gcc/config/arm/arm_acle_builtins.def
@@ -38,3 +38,7 @@ VAR1 (MCR, mcr, void)
 VAR1 (MCR, mcr2, void)
 VAR1 (MRC, mrc, si)
 VAR1 (MRC, mrc2, si)
+VAR1 (MCRR, mcrr, void)
+VAR1 (MCRR, mcrr2, void)
+VAR1 (MRRC, mrrc, di)
+VAR1 (MRRC, mrrc2, di)
diff --git a/gcc/config/arm/iterators.md b/gcc/config/arm/iterators.md
index d34a705cd42..e2e588688eb 100644
--- a/gcc/config/arm/iterators.md
+++ b/gcc/config/arm/iterators.md
@@ -976,3 +976,15 @@
 
 (define_int_attr mrc [(VUNSPEC_MRC "mrc") (VUNSPEC_MRC2 "mrc2")])
 (define_int_attr MRC [(VUNSPEC_MRC "MRC") (VUNSPEC_MRC2 "MRC2")])
+
+;; An iterator for the MCRR coprocessor instructions
+(define_int_iterator MCRRI [VUNSPEC_MCRR VUNSPEC_MCRR2])
+
+(define_int_attr mcrr [(VUNSPEC_MCRR "mcrr") (VUNSPEC_MCRR2 "mcrr2")])
+(define_int_attr MCRR [(VUNSPEC_MCRR "MCRR") (VUNSPEC_MCRR2 "MCRR2")])
+
+;; An iterator for the MRRC coprocessor instructions
+(define_int_iterator MRRCI [VUNSPEC_MRRC VUNSPEC_MRRC2])
+
+(define_int_attr mrrc [(VUNSPEC_MRRC "mrrc") (VUNSPEC_MRRC2 "mrrc2")])
+(define_int_attr MRRC [(VUNSPEC_MRRC "MRRC") (VUNSPEC_MRRC2 "MRRC2")])
diff --git a/gcc/config/arm/unspecs.md b/gcc/config/arm/unspecs.md
index 6bde96e3579..99cfa41b08d 100644
--- a/gcc/config/arm/unspecs.md
+++ b/gcc/config/arm/unspecs.md
@@ -164,6 +164,10 @@
   VUNSPEC_MCR2		; Represent the coprocessor mcr2 instruction.
   VUNSPEC_MRC		; Represent the coprocessor mrc instruction.
   VUNSPEC_MRC2		; Represent the coprocessor mrc2 instruction.
+  VUNSPEC_MCRR		; Represent the coprocessor mcrr instruction.
+  VUNSPEC_MCRR2		; Represent the coprocessor mcrr2 instruction.
+  VUNSPEC_MRRC		; Represent the coprocessor mrrc instruction.
+  VUNSPEC_MRRC2		; Represent the coprocessor mrrc2 instruction.
 ])
 
 ;; Enumerators for NEON unspecs.