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llvm-project/llvm/test/CodeGen/X86/optimize-compare.mir

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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -o - %s -mtriple=x86_64-- -run-pass peephole-opt | FileCheck %s
---
name: opt_zerocmp_0
body: |
bb.0:
; CHECK-LABEL: name: opt_zerocmp_0
; CHECK: [[COPY:%[0-9]+]]:gr32 = COPY $esi
; CHECK-NEXT: [[XOR32ri:%[0-9]+]]:gr32 = XOR32ri [[COPY]], i32 1234, implicit-def $eflags
; CHECK-NEXT: $al = SETCCr 5, implicit $eflags
%0:gr32 = COPY $esi
%1:gr32 = XOR32ri %0, i32 1234, implicit-def $eflags
; TEST should be removed.
TEST32rr %1, %1, implicit-def $eflags
$al = SETCCr 5, implicit $eflags
...
---
name: opt_zerocmp_1
body: |
bb.0:
; CHECK-LABEL: name: opt_zerocmp_1
; CHECK: [[COPY:%[0-9]+]]:gr64 = COPY $rsi
; CHECK-NEXT: [[DEC64r:%[0-9]+]]:gr64 = DEC64r [[COPY]], implicit-def $eflags
; CHECK-NEXT: [[LEA64r:%[0-9]+]]:gr64 = LEA64r [[DEC64r]], 5, $noreg, 12, $noreg
; CHECK-NEXT: $al = SETCCr 4, implicit $eflags
%0:gr64 = COPY $rsi
%1:gr64 = DEC64r %0, implicit-def $eflags
; CMP should be removed.
CMP64ri8 %1, 0, implicit-def $eflags
%2:gr64 = LEA64r %1, 5, $noreg, 12, $noreg
$al = SETCCr 4, implicit $eflags
...
---
name: opt_multiple_blocks
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: opt_multiple_blocks
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr64 = COPY undef $rsi
; CHECK-NEXT: [[INC64r:%[0-9]+]]:gr64 = INC64r [[COPY]], implicit-def $eflags
; CHECK-NEXT: PUSH64r undef $rcx, implicit-def $rsp, implicit $rsp
; CHECK-NEXT: $rcx = POP64r implicit-def $rsp, implicit $rsp
; CHECK-NEXT: JMP_1 %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: liveins: $eflags
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[LEA64r:%[0-9]+]]:gr64 = LEA64r [[INC64r]], 5, $noreg, 12, $noreg
; CHECK-NEXT: $al = SETCCr 4, implicit $eflags
bb.0:
%0:gr64 = COPY undef $rsi
%1:gr64 = INC64r %0, implicit-def $eflags
PUSH64r undef $rcx, implicit-def $rsp, implicit $rsp
$rcx = POP64r implicit-def $rsp, implicit $rsp
JMP_1 %bb.1
bb.1:
; TEST should be removed.
TEST64rr %1, %1, implicit-def $eflags
%2:gr64 = LEA64r %1, 5, $noreg, 12, $noreg
$al = SETCCr 4, implicit $eflags
...
---
name: opt_multiple_blocks_noopt_0
body: |
; CHECK-LABEL: name: opt_multiple_blocks_noopt_0
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr64 = COPY undef $rsi
; CHECK-NEXT: [[INC64r:%[0-9]+]]:gr64 = INC64r [[COPY]], implicit-def $eflags
; CHECK-NEXT: JMP_1 %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.2(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: TEST64rr [[INC64r]], [[INC64r]], implicit-def $eflags
; CHECK-NEXT: [[LEA64r:%[0-9]+]]:gr64 = LEA64r [[INC64r]], 5, $noreg, 12, $noreg
; CHECK-NEXT: $al = SETCCr 4, implicit $eflags
; CHECK-NEXT: JCC_1 %bb.1, 2, implicit $eflags
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
bb.0:
%0:gr64 = COPY undef $rsi
%1:gr64 = INC64r %0, implicit-def $eflags
JMP_1 %bb.1
bb.1:
; The TEST64rr should not be removed, since there are multiple preds.
TEST64rr %1, %1, implicit-def $eflags
%2:gr64 = LEA64r %1, 5, $noreg, 12, $noreg
$al = SETCCr 4, implicit $eflags
JCC_1 %bb.1, 2, implicit $eflags
bb.2:
...
---
name: opt_multiple_blocks_noopt_1
body: |
; CHECK-LABEL: name: opt_multiple_blocks_noopt_1
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: JMP_1 %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.2(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:gr64 = COPY undef $rsi
; CHECK-NEXT: TEST64rr [[COPY]], [[COPY]], implicit-def $eflags
; CHECK-NEXT: JCC_1 %bb.1, 2, implicit $eflags
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: [[MOV32r0_:%[0-9]+]]:gr32 = MOV32r0 implicit-def $eflags
; CHECK-NEXT: TEST64rr [[COPY]], [[COPY]], implicit-def $eflags
; CHECK-NEXT: $al = SETCCr 4, implicit $eflags
bb.0:
JMP_1 %bb.1
bb.1:
%0:gr64 = COPY undef $rsi
TEST64rr %0, %0, implicit-def $eflags
JCC_1 %bb.1, 2, implicit $eflags
bb.2:
; We should not move MOV32r0 up into the loop (that would be correct but
; slow).
%1:gr32 = MOV32r0 implicit-def $eflags
; TEST should not be removed because of MOV32r0.
TEST64rr %0, %0, implicit-def $eflags
$al = SETCCr 4, implicit $eflags
...
---
name: opt_zerocmp_user_0
body: |
bb.0:
; CHECK-LABEL: name: opt_zerocmp_user_0
; CHECK: [[COPY:%[0-9]+]]:gr32 = COPY $esi
; CHECK-NEXT: [[NEG32r:%[0-9]+]]:gr32 = NEG32r [[COPY]], implicit-def $eflags
; CHECK-NEXT: $al = SETCCr 3, implicit $eflags
%0:gr32 = COPY $esi
%1:gr32 = NEG32r %0, implicit-def dead $eflags
; TEST should be removed.
TEST32rr %0, %0, implicit-def $eflags
$al = SETCCr 4, implicit $eflags
...
---
name: opt_redundant_flags_0
body: |
bb.0:
; CHECK-LABEL: name: opt_redundant_flags_0
; CHECK: [[COPY:%[0-9]+]]:gr32 = COPY $esi
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr32 = COPY $edi
; CHECK-NEXT: [[SUB32rr:%[0-9]+]]:gr32 = SUB32rr [[COPY]], [[COPY1]], implicit-def $eflags
; CHECK-NEXT: $eax = COPY [[SUB32rr]]
; CHECK-NEXT: $bl = SETCCr 2, implicit $eflags
%0:gr32 = COPY $esi
%1:gr32 = COPY $edi
%2:gr32 = SUB32rr %0, %1, implicit-def dead $eflags
$eax = COPY %2
; CMP should be removed.
CMP32rr %0, %1, implicit-def $eflags
$bl = SETCCr 2, implicit $eflags
...
---
name: opt_redundant_flags_1
body: |
bb.0:
; CHECK-LABEL: name: opt_redundant_flags_1
; CHECK: [[COPY:%[0-9]+]]:gr32 = COPY $esi
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr32 = COPY $edi
; CHECK-NEXT: [[SUB32rr:%[0-9]+]]:gr32 = SUB32rr [[COPY]], [[COPY1]], implicit-def $eflags
; CHECK-NEXT: $eax = COPY [[SUB32rr]]
; CHECK-NEXT: $bl = SETCCr 6, implicit $eflags
%0:gr32 = COPY $esi
%1:gr32 = COPY $edi
%2:gr32 = SUB32rr %0, %1, implicit-def dead $eflags
$eax = COPY %2
; CMP should be removed.
CMP32rr %1, %0, implicit-def $eflags
$bl = SETCCr 3, implicit $eflags
...
---
name: opt_redundant_flags_2
body: |
bb.0:
; CHECK-LABEL: name: opt_redundant_flags_2
; CHECK: [[COPY:%[0-9]+]]:gr32 = COPY $esi
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr32 = COPY $edi
; CHECK-NEXT: [[SUB32rr:%[0-9]+]]:gr32 = SUB32rr [[COPY]], [[COPY1]], implicit-def $eflags
; CHECK-NEXT: $cl = SETCCr 2, implicit $eflags
; CHECK-NEXT: $eax = COPY [[SUB32rr]]
; CHECK-NEXT: $bl = SETCCr 2, implicit $eflags
%0:gr32 = COPY $esi
%1:gr32 = COPY $edi
%2:gr32 = SUB32rr %0, %1, implicit-def $eflags
; an extra eflags reader shouldn't stop optimization.
$cl = SETCCr 2, implicit $eflags
$eax = COPY %2
CMP32rr %0, %1, implicit-def $eflags
$bl = SETCCr 2, implicit $eflags
...
---
name: opt_redundant_flags_cmp_cmp
body: |
bb.0:
; CHECK-LABEL: name: opt_redundant_flags_cmp_cmp
; CHECK: [[COPY:%[0-9]+]]:gr32 = COPY $esi
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr32 = COPY $edi
; CHECK-NEXT: CMP32rr [[COPY]], [[COPY1]], implicit-def $eflags
; CHECK-NEXT: $cl = SETCCr 2, implicit $eflags
; CHECK-NEXT: $bl = SETCCr 7, implicit $eflags
%0:gr32 = COPY $esi
%1:gr32 = COPY $edi
CMP32rr %0, %1, implicit-def $eflags
$cl = SETCCr 2, implicit $eflags
; 2nd CMP should be removed.
CMP32rr %1, %0, implicit-def $eflags
$bl = SETCCr 2, implicit $eflags
...
---
name: opt_redundant_flags_cmp_cmp_2
body: |
bb.0:
; CHECK-LABEL: name: opt_redundant_flags_cmp_cmp_2
; CHECK: [[COPY:%[0-9]+]]:gr64 = COPY $rsi
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr64 = COPY $rdi
; CHECK-NEXT: CMP64ri8 [[COPY]], 15, implicit-def $eflags
; CHECK-NEXT: $cl = SETCCr 2, implicit $eflags
; CHECK-NEXT: $bl = SETCCr 2, implicit $eflags
%0:gr64 = COPY $rsi
%1:gr64 = COPY $rdi
CMP64ri8 %0, 15, implicit-def $eflags
$cl = SETCCr 2, implicit $eflags
; 2nd CMP should be removed.
CMP64ri8 %0, 15, implicit-def $eflags
$bl = SETCCr 2, implicit $eflags
...
---
name: opt_redundant_flags_test_test
body: |
bb.0:
; CHECK-LABEL: name: opt_redundant_flags_test_test
; CHECK: [[COPY:%[0-9]+]]:gr16 = COPY $ax
; CHECK-NEXT: TEST16rr [[COPY]], [[COPY]], implicit-def $eflags
; CHECK-NEXT: $cl = SETCCr 2, implicit $eflags
; CHECK-NEXT: $bl = SETCCr 2, implicit $eflags
%0:gr16 = COPY $ax
TEST16rr %0, %0, implicit-def $eflags
$cl = SETCCr 2, implicit $eflags
; 2nd CMP should be removed.
TEST16rr %0, %0, implicit-def $eflags
$bl = SETCCr 2, implicit $eflags
...
---
name: opt_redundant_flags_cmp_sub
body: |
bb.0:
; CHECK-LABEL: name: opt_redundant_flags_cmp_sub
; CHECK: [[COPY:%[0-9]+]]:gr32 = COPY $esi
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr32 = COPY $edi
; CHECK-NEXT: CMP32rr [[COPY]], [[COPY1]], implicit-def $eflags
; CHECK-NEXT: $cl = SETCCr 2, implicit $eflags
; CHECK-NEXT: $bl = SETCCr 7, implicit $eflags
%0:gr32 = COPY $esi
%1:gr32 = COPY $edi
CMP32rr %0, %1, implicit-def $eflags
$cl = SETCCr 2, implicit $eflags
; SUB should be removed.
dead %2:gr32 = SUB32rr %1, %0, implicit-def $eflags
$bl = SETCCr 2, implicit $eflags
...
---
name: opt_redundant_flags_cmp_sub_2
body: |
bb.0:
; CHECK-LABEL: name: opt_redundant_flags_cmp_sub_2
; CHECK: [[COPY:%[0-9]+]]:gr32 = COPY $esi
; CHECK-NEXT: CMP32ri [[COPY]], -12345, implicit-def $eflags
; CHECK-NEXT: $cl = SETCCr 2, implicit $eflags
; CHECK-NEXT: $bl = SETCCr 2, implicit $eflags
%0:gr32 = COPY $esi
CMP32ri %0, -12345, implicit-def $eflags
$cl = SETCCr 2, implicit $eflags
; SUB should be removed
dead %2:gr32 = SUB32ri %0, -12345, implicit-def $eflags
$bl = SETCCr 2, implicit $eflags
...
---
name: opt_redundant_flags_cmp_sub_noopt
body: |
bb.0:
; CHECK-LABEL: name: opt_redundant_flags_cmp_sub_noopt
; CHECK: [[COPY:%[0-9]+]]:gr32 = COPY $esi
; CHECK-NEXT: [[COPY1:%[0-9]+]]:gr32 = COPY $edi
; CHECK-NEXT: CMP32rr [[COPY]], [[COPY1]], implicit-def $eflags
; CHECK-NEXT: $cl = SETCCr 2, implicit $eflags
; CHECK-NEXT: [[SUB32rr:%[0-9]+]]:gr32 = SUB32rr [[COPY]], [[COPY1]], implicit-def $eflags
; CHECK-NEXT: $rdx = COPY [[SUB32rr]]
; CHECK-NEXT: $bl = SETCCr 2, implicit $eflags
%0:gr32 = COPY $esi
%1:gr32 = COPY $edi
CMP32rr %0, %1, implicit-def $eflags
$cl = SETCCr 2, implicit $eflags
; cannot optimize the SUB because the result value is used.
%2:gr32 = SUB32rr %0, %1, implicit-def $eflags
$rdx = COPY %2
$bl = SETCCr 2, implicit $eflags
...
---
name: opt_redundant_flags_cmp_test
body: |
bb.0:
; CHECK-LABEL: name: opt_redundant_flags_cmp_test
; CHECK: [[COPY:%[0-9]+]]:gr32 = COPY $esi
; CHECK-NEXT: CMP32ri8 [[COPY]], 0, implicit-def $eflags
; CHECK-NEXT: $cl = SETCCr 2, implicit $eflags
; CHECK-NEXT: $bl = SETCCr 2, implicit $eflags
%0:gr32 = COPY $esi
CMP32ri8 %0, 0, implicit-def $eflags
$cl = SETCCr 2, implicit $eflags
; TEST should be removed
TEST32rr %0, %0, implicit-def $eflags
$bl = SETCCr 2, implicit $eflags
...
---
name: opt_redundant_flags_test_cmp
body: |
bb.0:
; CHECK-LABEL: name: opt_redundant_flags_test_cmp
; CHECK: [[COPY:%[0-9]+]]:gr32 = COPY $esi
; CHECK-NEXT: TEST32rr [[COPY]], [[COPY]], implicit-def $eflags
; CHECK-NEXT: $cl = SETCCr 2, implicit $eflags
; CHECK-NEXT: $bl = SETCCr 2, implicit $eflags
%0:gr32 = COPY $esi
TEST32rr %0, %0, implicit-def $eflags
$cl = SETCCr 2, implicit $eflags
; TEST should be removed
CMP32ri8 %0, 0, implicit-def $eflags
$bl = SETCCr 2, implicit $eflags
...
---
name: opt_redundant_flags_cmp_addr
stack:
- { id: 0, size: 4, alignment: 4 }
body: |
bb.0:
; CHECK-LABEL: name: opt_redundant_flags_cmp_addr
; CHECK: [[COPY:%[0-9]+]]:gr64 = COPY $rsi
; CHECK-NEXT: CMP64ri32 [[COPY]], @opt_redundant_flags_cmp_addr + 4, implicit-def $eflags
; CHECK-NEXT: $cl = SETCCr 7, implicit $eflags
; CHECK-NEXT: $cl = SETCCr 3, implicit $eflags
%0:gr64 = COPY $rsi
CMP64ri32 %0, @opt_redundant_flags_cmp_addr + 4, implicit-def $eflags
$cl = SETCCr 7, implicit $eflags
; CMP should be removed
CMP64ri32 %0, @opt_redundant_flags_cmp_addr + 4, implicit-def $eflags
$cl = SETCCr 3, implicit $eflags
...
---
name: opt_redundant_flags_cmp_addr_noopt
stack:
- { id: 0, size: 4, alignment: 4 }
body: |
bb.0:
; CHECK-LABEL: name: opt_redundant_flags_cmp_addr_noopt
; CHECK: [[COPY:%[0-9]+]]:gr64 = COPY $rsi
; CHECK-NEXT: CMP64ri32 [[COPY]], @opt_redundant_flags_cmp_addr_noopt + 24, implicit-def $eflags
; CHECK-NEXT: $cl = SETCCr 7, implicit $eflags
; CHECK-NEXT: CMP64ri32 [[COPY]], 24, implicit-def $eflags
; CHECK-NEXT: $cl = SETCCr 3, implicit $eflags
%0:gr64 = COPY $rsi
CMP64ri32 %0, @opt_redundant_flags_cmp_addr_noopt + 24, implicit-def $eflags
$cl = SETCCr 7, implicit $eflags
; CMP should not be removed
CMP64ri32 %0, 24, implicit-def $eflags
$cl = SETCCr 3, implicit $eflags
...
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