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-rw-r--r--llvm/test/CodeGen/X86/optimize-compare.mir358
1 files changed, 358 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/optimize-compare.mir b/llvm/test/CodeGen/X86/optimize-compare.mir
index dc15cbbab8b1..042d9a5d4384 100644
--- a/llvm/test/CodeGen/X86/optimize-compare.mir
+++ b/llvm/test/CodeGen/X86/optimize-compare.mir
@@ -379,3 +379,361 @@ body: |
CMP64ri32 %0, 24, implicit-def $eflags
$cl = SETCCr 3, implicit $eflags
...
+---
+name: opt_redundant_flags_adjusted_imm_0
+body: |
+ bb.0:
+ ; CHECK-LABEL: name: opt_redundant_flags_adjusted_imm_0
+ ; CHECK: [[COPY:%[0-9]+]]:gr64 = COPY $rsi
+ ; CHECK-NEXT: CMP64ri8 [[COPY]], 1, implicit-def $eflags
+ ; CHECK-NEXT: $cl = SETCCr 4, implicit $eflags
+ ; CHECK-NEXT: $bl = SETCCr 15, implicit $eflags
+ ; CHECK-NEXT: $bl = SETCCr 7, implicit $eflags
+ ; CHECK-NEXT: $bl = SETCCr 14, implicit $eflags
+ ; CHECK-NEXT: $bl = SETCCr 6, implicit $eflags
+ %0:gr64 = COPY $rsi
+ ; CMP+SETCC %0 == 1
+ CMP64ri8 %0, 1, implicit-def $eflags
+ $cl = SETCCr 4, implicit $eflags
+ ; CMP+SETCC %0 >= 2; CMP can be removed.
+ CMP64ri8 %0, 2, implicit-def $eflags
+ ; %0 >=s 2 --> %0 >s 1
+ $bl = SETCCr 13, implicit $eflags
+ ; %0 >=u 2 --> %0 >u 1
+ $bl = SETCCr 3, implicit $eflags
+ ; %0 <s 2 --> %0 <=s 1
+ $bl = SETCCr 12, implicit $eflags
+ ; %0 <u 2 --> %0 <=u 1
+ $bl = SETCCr 2, implicit $eflags
+...
+---
+name: opt_redundant_flags_adjusted_imm_1
+body: |
+ bb.0:
+ ; CHECK-LABEL: name: opt_redundant_flags_adjusted_imm_1
+ ; CHECK: [[COPY:%[0-9]+]]:gr64 = COPY $rsi
+ ; CHECK-NEXT: CMP64ri8 [[COPY]], 42, implicit-def $eflags
+ ; CHECK-NEXT: $cl = SETCCr 5, implicit $eflags
+ ; CHECK-NEXT: $bl = SETCCr 13, implicit $eflags
+ ; CHECK-NEXT: $bl = SETCCr 3, implicit $eflags
+ ; CHECK-NEXT: $bl = SETCCr 12, implicit $eflags
+ ; CHECK-NEXT: $bl = SETCCr 2, implicit $eflags
+ %0:gr64 = COPY $rsi
+ ; CMP+SETCC %0 != 42
+ CMP64ri8 %0, 42, implicit-def $eflags
+ $cl = SETCCr 5, implicit $eflags
+ ; CMP+SETCC %0 >= 2; CMP can be removed.
+ CMP64ri8 %0, 41, implicit-def $eflags
+ ; %0 >s 41 --> %0 >=s 42
+ $bl = SETCCr 15, implicit $eflags
+ ; %0 >u 41 --> %0 >=u 42
+ $bl = SETCCr 7, implicit $eflags
+ ; %0 <=s 41 --> %0 <s 42
+ $bl = SETCCr 14, implicit $eflags
+ ; %0 <=u 41 --> %0 <u 42
+ $bl = SETCCr 6, implicit $eflags
+...
+---
+name: opt_redundant_flags_adjusted_imm_test_cmp
+body: |
+ bb.0:
+ ; CHECK-LABEL: name: opt_redundant_flags_adjusted_imm_test_cmp
+ ; CHECK: [[COPY:%[0-9]+]]:gr8 = COPY $bl
+ ; CHECK-NEXT: TEST8rr [[COPY]], [[COPY]], implicit-def $eflags
+ ; CHECK-NEXT: $cl = SETCCr 14, implicit $eflags
+ ; CHECK-NEXT: $cl = SETCCr 7, implicit $eflags
+ ; CHECK-NEXT: $cl = SETCCr 12, implicit $eflags
+ %0:gr8 = COPY $bl
+ TEST8rr %0, %0, implicit-def $eflags
+ ; SET %0 <=s 0
+ $cl = SETCCr 14, implicit $eflags
+ ; CMP should be removed (%0 >=u 1)
+ CMP8ri %0, 1, implicit-def $eflags
+ $cl = SETCCr 3, implicit $eflags
+
+ ; CMP should be removed (%0 <=s -1)
+ CMP8ri %0, -1, implicit-def $eflags
+ $cl = SETCCr 14, implicit $eflags
+...
+---
+name: opt_redundant_flags_adjusted_imm_cmp_test
+body: |
+ bb.0:
+ ; CHECK-LABEL: name: opt_redundant_flags_adjusted_imm_cmp_test
+ ; CHECK: [[COPY:%[0-9]+]]:gr64 = COPY $rsi
+ ; CHECK-NEXT: CMP64ri32 [[COPY]], 1, implicit-def $eflags
+ ; CHECK-NEXT: $cl = SETCCr 13, implicit $eflags
+ ; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr64 = COPY $edi
+ ; CHECK-NEXT: CMP64ri32 [[COPY1]], -1, implicit-def $eflags
+ ; CHECK-NEXT: $cl = SETCCr 14, implicit $eflags
+ %0:gr64 = COPY $rsi
+ CMP64ri32 %0, 1, implicit-def $eflags
+ ; TEST should be removed
+ TEST64rr %0, %0, implicit-def $eflags
+ $cl = SETCCr 15, implicit $eflags
+
+ %1:gr64 = COPY $edi
+ CMP64ri32 %1, -1, implicit-def $eflags
+ ; TEST should be removed
+ TEST64rr %1, %1, implicit-def $eflags
+ $cl = SETCCr 12, implicit $eflags
+...
+---
+name: opt_redundant_flags_adjusted_imm_noopt_0
+body: |
+ bb.0:
+ ; CHECK-LABEL: name: opt_redundant_flags_adjusted_imm_noopt_0
+ ; CHECK: [[COPY:%[0-9]+]]:gr64 = COPY $rsi
+ ; CHECK-NEXT: CMP64ri8 [[COPY]], 42, implicit-def $eflags
+ ; CHECK-NEXT: $cl = SETCCr 4, implicit $eflags
+ ; CHECK-NEXT: CMP64ri8 [[COPY]], 41, implicit-def $eflags
+ ; CHECK-NEXT: $bl = SETCCr 4, implicit $eflags
+ %0:gr64 = COPY $rsi
+ ; CMP+SETCC %0 <s 1
+ CMP64ri8 %0, 42, implicit-def $eflags
+ $cl = SETCCr 4, implicit $eflags
+ ; CMP should not be removed.
+ CMP64ri8 %0, 41, implicit-def $eflags
+ ; %0 == 41
+ $bl = SETCCr 4, implicit $eflags
+...
+---
+name: opt_redundant_flags_adjusted_imm_noopt_1
+body: |
+ bb.0:
+ ; CHECK-LABEL: name: opt_redundant_flags_adjusted_imm_noopt_1
+ ; CHECK: [[COPY:%[0-9]+]]:gr32 = COPY $esi
+ ; CHECK-NEXT: CMP32ri [[COPY]], 2147483647, implicit-def $eflags
+ ; CHECK-NEXT: CMP32ri [[COPY]], -2147483648, implicit-def $eflags
+ ; CHECK-NEXT: $bl = SETCCr 12, implicit $eflags
+ ; CHECK-NEXT: CMP32ri [[COPY]], 4294967295, implicit-def $eflags
+ ; CHECK-NEXT: CMP32ri [[COPY]], -2147483648, implicit-def $eflags
+ ; CHECK-NEXT: $bl = SETCCr 12, implicit $eflags
+ ; CHECK-NEXT: CMP32ri [[COPY]], 2147483647, implicit-def $eflags
+ ; CHECK-NEXT: CMP32ri [[COPY]], -2147483648, implicit-def $eflags
+ ; CHECK-NEXT: $bl = SETCCr 13, implicit $eflags
+ ; CHECK-NEXT: CMP32ri [[COPY]], 4294967295, implicit-def $eflags
+ ; CHECK-NEXT: CMP32ri [[COPY]], 0, implicit-def $eflags
+ ; CHECK-NEXT: $bl = SETCCr 2, implicit $eflags
+ ; CHECK-NEXT: CMP32ri [[COPY]], 4294967295, implicit-def $eflags
+ ; CHECK-NEXT: CMP32ri [[COPY]], 0, implicit-def $eflags
+ ; CHECK-NEXT: $bl = SETCCr 3, implicit $eflags
+ %0:gr32 = COPY $esi
+ ; CMP+SETCC %0 == INT32_MAX
+ CMP32ri %0, 2147483647, implicit-def $eflags
+ ; CMP should not be removed.
+ CMP32ri %0, -2147483648, implicit-def $eflags
+ ; %0 <s INT32_MIN
+ $bl = SETCCr 12, implicit $eflags
+
+ CMP32ri %0, 4294967295, implicit-def $eflags
+ ; CMP should not be removed.
+ CMP32ri %0, -2147483648, implicit-def $eflags
+ $bl = SETCCr 12, implicit $eflags
+
+ CMP32ri %0, 2147483647, implicit-def $eflags
+ ; CMP should not be removed.
+ CMP32ri %0, -2147483648, implicit-def $eflags
+ $bl = SETCCr 13, implicit $eflags
+
+ CMP32ri %0, 4294967295, implicit-def $eflags
+ ; should not be removed
+ CMP32ri %0, 0, implicit-def $eflags
+ $bl = SETCCr 2, implicit $eflags
+
+ CMP32ri %0, 4294967295, implicit-def $eflags
+ ; should not be removed
+ CMP32ri %0, 0, implicit-def $eflags
+ $bl = SETCCr 3, implicit $eflags
+...
+---
+name: opt_redundant_flags_adjusted_imm_noopt_2
+body: |
+ bb.0:
+ ; CHECK-LABEL: name: opt_redundant_flags_adjusted_imm_noopt_2
+ ; CHECK: [[COPY:%[0-9]+]]:gr16 = COPY $cx
+ ; CHECK-NEXT: CMP16ri [[COPY]], -32768, implicit-def $eflags
+ ; CHECK-NEXT: CMP16ri [[COPY]], 32767, implicit-def $eflags
+ ; CHECK-NEXT: $bl = SETCCr 15, implicit $eflags
+ ; CHECK-NEXT: CMP16ri [[COPY]], 65535, implicit-def $eflags
+ ; CHECK-NEXT: CMP16ri [[COPY]], 32767, implicit-def $eflags
+ ; CHECK-NEXT: $bl = SETCCr 15, implicit $eflags
+ ; CHECK-NEXT: CMP16ri [[COPY]], -32768, implicit-def $eflags
+ ; CHECK-NEXT: CMP16ri [[COPY]], 32767, implicit-def $eflags
+ ; CHECK-NEXT: $bl = SETCCr 14, implicit $eflags
+ ; CHECK-NEXT: CMP16ri [[COPY]], 0, implicit-def $eflags
+ ; CHECK-NEXT: CMP16ri [[COPY]], 65535, implicit-def $eflags
+ ; CHECK-NEXT: $bl = SETCCr 4, implicit $eflags
+ ; CHECK-NEXT: CMP16ri [[COPY]], 0, implicit-def $eflags
+ ; CHECK-NEXT: CMP16ri [[COPY]], 65535, implicit-def $eflags
+ ; CHECK-NEXT: $bl = SETCCr 6, implicit $eflags
+ %0:gr16 = COPY $cx
+ ; CMP+SETCC %0 == INT16_MIN
+ CMP16ri %0, -32768, implicit-def $eflags
+ ; CMP should not be removed.
+ CMP16ri %0, 32767, implicit-def $eflags
+ ; %0 >s INT16_MAX
+ $bl = SETCCr 15, implicit $eflags
+
+ CMP16ri %0, 65535, implicit-def $eflags
+ ; CMP should not be removed.
+ CMP16ri %0, 32767, implicit-def $eflags
+ $bl = SETCCr 15, implicit $eflags
+
+ CMP16ri %0, -32768, implicit-def $eflags
+ ; CMP should not be removed.
+ CMP16ri %0, 32767, implicit-def $eflags
+ $bl = SETCCr 14, implicit $eflags
+
+ CMP16ri %0, 0, implicit-def $eflags
+ ; should not be removed
+ CMP16ri %0, 65535, implicit-def $eflags
+ $bl = SETCCr 4, implicit $eflags
+
+ CMP16ri %0, 0, implicit-def $eflags
+ ; should not be removed
+ CMP16ri %0, 65535, implicit-def $eflags
+ $bl = SETCCr 6, implicit $eflags
+...
+---
+name: opt_adjusted_imm_multiple_blocks
+body: |
+ ; CHECK-LABEL: name: opt_adjusted_imm_multiple_blocks
+ ; CHECK: bb.0:
+ ; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.3(0x40000000)
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:gr32 = COPY $eax
+ ; CHECK-NEXT: CMP32ri [[COPY]], 20, implicit-def $eflags
+ ; CHECK-NEXT: JCC_1 %bb.1, 4, implicit $eflags
+ ; CHECK-NEXT: JMP_1 %bb.3
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.1:
+ ; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.3(0x40000000)
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: JCC_1 %bb.2, 15, implicit $eflags
+ ; CHECK-NEXT: JMP_1 %bb.3
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.2:
+ ; CHECK-NEXT: successors: %bb.3(0x80000000)
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: JMP_1 %bb.3
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.3:
+ ; CHECK-NEXT: RET 0
+ bb.0:
+ %0:gr32 = COPY $eax
+ CMP32ri %0, 20, implicit-def $eflags
+ JCC_1 %bb.1, 4, implicit $eflags
+ JMP_1 %bb.3
+
+ bb.1:
+ ; CMP can be removed when adjusting the JCC.
+ CMP32ri %0, 21, implicit-def $eflags
+ JCC_1 %bb.2, 13, implicit $eflags
+ JMP_1 %bb.3
+
+ bb.2:
+ JMP_1 %bb.3
+
+ bb.3:
+ RET 0
+...
+---
+name: opt_adjusted_imm_multiple_blocks_noopt
+body: |
+ ; CHECK-LABEL: name: opt_adjusted_imm_multiple_blocks_noopt
+ ; CHECK: bb.0:
+ ; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.3(0x40000000)
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:gr32 = COPY $eax
+ ; CHECK-NEXT: CMP32ri [[COPY]], 20, implicit-def $eflags
+ ; CHECK-NEXT: JCC_1 %bb.1, 4, implicit $eflags
+ ; CHECK-NEXT: JMP_1 %bb.3
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.1:
+ ; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.3(0x40000000)
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: CMP32ri [[COPY]], 21, implicit-def $eflags
+ ; CHECK-NEXT: JCC_1 %bb.2, 13, implicit $eflags
+ ; CHECK-NEXT: JMP_1 %bb.3
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.2:
+ ; CHECK-NEXT: successors: %bb.3(0x80000000)
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: $al = SETCCr 4, implicit $eflags
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.3:
+ ; CHECK-NEXT: RET 0
+ bb.0:
+ %0:gr32 = COPY $eax
+ CMP32ri %0, 20, implicit-def $eflags
+ JCC_1 %bb.1, 4, implicit $eflags
+ JMP_1 %bb.3
+
+ bb.1:
+ ; The following CMP should not be optimized because $eflags is live-out
+ CMP32ri %0, 21, implicit-def $eflags
+ JCC_1 %bb.2, 13, implicit $eflags
+ JMP_1 %bb.3
+
+ bb.2:
+ liveins: $eflags
+ $al = SETCCr 4, implicit $eflags
+
+ bb.3:
+ RET 0
+...
+---
+name: opt_shift_cmp_zero
+body: |
+ bb.0:
+ ; CHECK-LABEL: name: opt_shift_cmp_zero
+ ; CHECK: [[COPY:%[0-9]+]]:gr64 = COPY $rsi
+ ; CHECK-NEXT: [[SHL64ri:%[0-9]+]]:gr64 = SHL64ri [[COPY]], 7, implicit-def $eflags
+ ; CHECK-NEXT: $al = SETCCr 4, implicit $eflags
+ %0:gr64 = COPY $rsi
+ %1:gr64 = SHL64ri %0, 7, implicit-def dead $eflags
+ ; TEST should be removed.
+ TEST64rr %1, %1, implicit-def $eflags
+ $al = SETCCr 4, implicit $eflags
+...
+---
+name: noopt_shift_cmp_zero
+body: |
+ bb.0:
+ ; CHECK-LABEL: name: noopt_shift_cmp_zero
+ ; CHECK: [[COPY:%[0-9]+]]:gr64 = COPY $rsi
+ ; CHECK-NEXT: [[SHL64ri:%[0-9]+]]:gr64 = SHL64ri [[COPY]], 9, implicit-def dead $eflags
+ ; CHECK-NEXT: TEST64rr [[SHL64ri]], [[SHL64ri]], implicit-def $eflags
+ ; CHECK-NEXT: $al = SETCCr 14, implicit $eflags
+ %0:gr64 = COPY $rsi
+ %1:gr64 = SHL64ri %0, 9, implicit-def dead $eflags
+ ; TEST cannot be removed if a user relies on the OF flag.
+ TEST64rr %1, %1, implicit-def $eflags
+ $al = SETCCr 14, implicit $eflags
+...
+---
+name: noopt_shift_cmp_zero_multiblock
+body: |
+ ; CHECK-LABEL: name: noopt_shift_cmp_zero_multiblock
+ ; CHECK: bb.0:
+ ; CHECK-NEXT: successors: %bb.1(0x80000000)
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:gr64 = COPY $rsi
+ ; CHECK-NEXT: [[SHL64ri:%[0-9]+]]:gr64 = SHL64ri [[COPY]], 9, implicit-def dead $eflags
+ ; CHECK-NEXT: TEST64rr [[SHL64ri]], [[SHL64ri]], implicit-def $eflags
+ ; CHECK-NEXT: JMP_1 %bb.1
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: bb.1:
+ ; CHECK-NEXT: $al = SETCCr 14, implicit $eflags
+ bb.0:
+ %0:gr64 = COPY $rsi
+ %1:gr64 = SHL64ri %0, 9, implicit-def dead $eflags
+ ; TEST cannot be removed if a user relies on the OF flag.
+ TEST64rr %1, %1, implicit-def $eflags
+ JMP_1 %bb.1
+
+ bb.1:
+ liveins: $eflags
+ $al = SETCCr 14, implicit $eflags
+...
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