267 lines
18 KiB
YAML
267 lines
18 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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# RUN: llc -o - -mtriple=x86_64-- -run-pass=greedy %s | FileCheck %s
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# Tests for stack folding ADCX and ADOX. The ADOX tests were manually constructed by modifying ADCX tests to use OF instead of CF.
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--- |
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; Function Attrs: nounwind
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define i8 @stack_fold_adcx32(i8 %a0, i32 %a1, i32 %a2, i8* %a3) #0 {
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tail call void asm sideeffect "nop", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
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%1 = call { i8, i32 } @llvm.x86.addcarry.32(i8 %a0, i32 %a1, i32 %a2)
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%2 = extractvalue { i8, i32 } %1, 1
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%3 = bitcast i8* %a3 to i32*
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store i32 %2, i32* %3, align 1
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%4 = extractvalue { i8, i32 } %1, 0
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ret i8 %4
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}
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; Function Attrs: nounwind
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define i8 @stack_fold_adcx64(i8 %a0, i64 %a1, i64 %a2, i8* %a3) #0 {
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tail call void asm sideeffect "nop", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
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%1 = call { i8, i64 } @llvm.x86.addcarry.64(i8 %a0, i64 %a1, i64 %a2)
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%2 = extractvalue { i8, i64 } %1, 1
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%3 = bitcast i8* %a3 to i64*
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store i64 %2, i64* %3, align 1
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%4 = extractvalue { i8, i64 } %1, 0
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ret i8 %4
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}
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; Function Attrs: nounwind
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define i8 @stack_fold_adox32(i8 %a0, i32 %a1, i32 %a2, i8* %a3) #0 {
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tail call void asm sideeffect "nop", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
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%1 = call { i8, i32 } @llvm.x86.addcarry.32(i8 %a0, i32 %a1, i32 %a2)
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%2 = extractvalue { i8, i32 } %1, 1
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%3 = bitcast i8* %a3 to i32*
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store i32 %2, i32* %3, align 1
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%4 = extractvalue { i8, i32 } %1, 0
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ret i8 %4
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}
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; Function Attrs: nounwind
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define i8 @stack_fold_adox64(i8 %a0, i64 %a1, i64 %a2, i8* %a3) #0 {
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tail call void asm sideeffect "nop", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
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%1 = call { i8, i64 } @llvm.x86.addcarry.64(i8 %a0, i64 %a1, i64 %a2)
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%2 = extractvalue { i8, i64 } %1, 1
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%3 = bitcast i8* %a3 to i64*
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store i64 %2, i64* %3, align 1
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%4 = extractvalue { i8, i64 } %1, 0
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ret i8 %4
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}
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; Function Attrs: nounwind readnone
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declare { i8, i32 } @llvm.x86.addcarry.32(i8, i32, i32) #1
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; Function Attrs: nounwind readnone
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declare { i8, i64 } @llvm.x86.addcarry.64(i8, i64, i64) #1
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; Function Attrs: nounwind
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declare void @llvm.stackprotector(i8*, i8**) #2
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attributes #0 = { nounwind "target-features"="+adx" }
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attributes #1 = { nounwind readnone "target-features"="+adx" }
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attributes #2 = { nounwind }
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...
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---
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name: stack_fold_adcx32
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alignment: 16
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tracksRegLiveness: true
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registers:
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- { id: 0, class: gr32 }
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- { id: 1, class: gr32 }
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- { id: 2, class: gr32 }
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- { id: 3, class: gr64 }
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- { id: 4, class: gr8 }
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- { id: 5, class: gr8 }
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- { id: 6, class: gr32 }
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- { id: 7, class: gr8 }
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liveins:
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- { reg: '$edi', virtual-reg: '%0' }
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- { reg: '$esi', virtual-reg: '%1' }
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- { reg: '$edx', virtual-reg: '%2' }
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- { reg: '$rcx', virtual-reg: '%3' }
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body: |
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bb.0 (%ir-block.0):
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liveins: $edi, $esi, $edx, $rcx
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; CHECK-LABEL: name: stack_fold_adcx32
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; CHECK: liveins: $edi, $esi, $edx, $rcx
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; CHECK: MOV64mr %stack.0, 1, $noreg, 0, $noreg, $rcx :: (store 8 into %stack.0)
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; CHECK: MOV32mr %stack.1, 1, $noreg, 0, $noreg, $edx :: (store 4 into %stack.1)
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; CHECK: MOV32mr %stack.2, 1, $noreg, 0, $noreg, $esi :: (store 4 into %stack.2)
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; CHECK: MOV32mr %stack.3, 1, $noreg, 0, $noreg, $edi :: (store 4 into %stack.3)
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; CHECK: INLINEASM &nop, 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $rax, 12 /* clobber */, implicit-def dead early-clobber $rbx, 12 /* clobber */, implicit-def dead early-clobber $rcx, 12 /* clobber */, implicit-def dead early-clobber $rdx, 12 /* clobber */, implicit-def dead early-clobber $rsi, 12 /* clobber */, implicit-def dead early-clobber $rdi, 12 /* clobber */, implicit-def dead early-clobber $rbp, 12 /* clobber */, implicit-def dead early-clobber $r8, 12 /* clobber */, implicit-def dead early-clobber $r9, 12 /* clobber */, implicit-def dead early-clobber $r10, 12 /* clobber */, implicit-def dead early-clobber $r11, 12 /* clobber */, implicit-def dead early-clobber $r12, 12 /* clobber */, implicit-def dead early-clobber $r13, 12 /* clobber */, implicit-def dead early-clobber $r14, 12 /* clobber */, implicit-def dead early-clobber $r15
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; CHECK: [[MOV32rm:%[0-9]+]]:gr32 = MOV32rm %stack.3, 1, $noreg, 0, $noreg :: (load 4 from %stack.3)
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; CHECK: dead [[MOV32rm]].sub_8bit:gr32 = ADD8ri [[MOV32rm]].sub_8bit, -1, implicit-def $eflags
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; CHECK: [[MOV32rm1:%[0-9]+]]:gr32 = MOV32rm %stack.2, 1, $noreg, 0, $noreg :: (load 4 from %stack.2)
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; CHECK: [[ADCX32rm:%[0-9]+]]:gr32 = ADCX32rm [[ADCX32rm]], %stack.1, 1, $noreg, 0, $noreg, implicit-def $eflags, implicit killed $eflags :: (load 4 from %stack.1)
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; CHECK: [[SETCCr:%[0-9]+]]:gr8 = SETCCr 2, implicit killed $eflags
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; CHECK: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm %stack.0, 1, $noreg, 0, $noreg :: (load 8 from %stack.0)
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; CHECK: MOV32mr [[MOV64rm]], 1, $noreg, 0, $noreg, [[ADCX32rm]] :: (store 4 into %ir.3, align 1)
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; CHECK: $al = COPY [[SETCCr]]
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; CHECK: RET 0, $al
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%3:gr64 = COPY $rcx
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%2:gr32 = COPY $edx
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%6:gr32 = COPY $esi
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%0:gr32 = COPY $edi
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INLINEASM &nop, 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $rax, 12 /* clobber */, implicit-def dead early-clobber $rbx, 12 /* clobber */, implicit-def dead early-clobber $rcx, 12 /* clobber */, implicit-def dead early-clobber $rdx, 12 /* clobber */, implicit-def dead early-clobber $rsi, 12 /* clobber */, implicit-def dead early-clobber $rdi, 12 /* clobber */, implicit-def dead early-clobber $rbp, 12 /* clobber */, implicit-def dead early-clobber $r8, 12 /* clobber */, implicit-def dead early-clobber $r9, 12 /* clobber */, implicit-def dead early-clobber $r10, 12 /* clobber */, implicit-def dead early-clobber $r11, 12 /* clobber */, implicit-def dead early-clobber $r12, 12 /* clobber */, implicit-def dead early-clobber $r13, 12 /* clobber */, implicit-def dead early-clobber $r14, 12 /* clobber */, implicit-def dead early-clobber $r15
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dead %0.sub_8bit:gr32 = ADD8ri %0.sub_8bit, -1, implicit-def $eflags
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%6:gr32 = ADCX32rr %6, %2, implicit-def $eflags, implicit killed $eflags
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%7:gr8 = SETCCr 2, implicit killed $eflags
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MOV32mr %3, 1, $noreg, 0, $noreg, %6 :: (store 4 into %ir.3, align 1)
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$al = COPY %7
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RET 0, killed $al
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...
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---
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name: stack_fold_adcx64
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alignment: 16
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tracksRegLiveness: true
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registers:
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- { id: 0, class: gr32 }
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- { id: 1, class: gr64 }
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- { id: 2, class: gr64 }
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- { id: 3, class: gr64 }
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- { id: 4, class: gr8 }
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- { id: 5, class: gr8 }
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- { id: 6, class: gr64 }
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- { id: 7, class: gr8 }
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liveins:
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- { reg: '$edi', virtual-reg: '%0' }
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- { reg: '$rsi', virtual-reg: '%1' }
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- { reg: '$rdx', virtual-reg: '%2' }
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- { reg: '$rcx', virtual-reg: '%3' }
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body: |
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bb.0 (%ir-block.0):
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liveins: $edi, $rsi, $rdx, $rcx
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; CHECK-LABEL: name: stack_fold_adcx64
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; CHECK: liveins: $edi, $rsi, $rdx, $rcx
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; CHECK: MOV64mr %stack.0, 1, $noreg, 0, $noreg, $rcx :: (store 8 into %stack.0)
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; CHECK: MOV64mr %stack.1, 1, $noreg, 0, $noreg, $rdx :: (store 8 into %stack.1)
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; CHECK: MOV64mr %stack.2, 1, $noreg, 0, $noreg, $rsi :: (store 8 into %stack.2)
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; CHECK: MOV32mr %stack.3, 1, $noreg, 0, $noreg, $edi :: (store 4 into %stack.3)
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; CHECK: INLINEASM &nop, 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $rax, 12 /* clobber */, implicit-def dead early-clobber $rbx, 12 /* clobber */, implicit-def dead early-clobber $rcx, 12 /* clobber */, implicit-def dead early-clobber $rdx, 12 /* clobber */, implicit-def dead early-clobber $rsi, 12 /* clobber */, implicit-def dead early-clobber $rdi, 12 /* clobber */, implicit-def dead early-clobber $rbp, 12 /* clobber */, implicit-def dead early-clobber $r8, 12 /* clobber */, implicit-def dead early-clobber $r9, 12 /* clobber */, implicit-def dead early-clobber $r10, 12 /* clobber */, implicit-def dead early-clobber $r11, 12 /* clobber */, implicit-def dead early-clobber $r12, 12 /* clobber */, implicit-def dead early-clobber $r13, 12 /* clobber */, implicit-def dead early-clobber $r14, 12 /* clobber */, implicit-def dead early-clobber $r15
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; CHECK: [[MOV32rm:%[0-9]+]]:gr32 = MOV32rm %stack.3, 1, $noreg, 0, $noreg :: (load 4 from %stack.3)
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; CHECK: dead [[MOV32rm]].sub_8bit:gr32 = ADD8ri [[MOV32rm]].sub_8bit, -1, implicit-def $eflags
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; CHECK: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm %stack.2, 1, $noreg, 0, $noreg :: (load 8 from %stack.2)
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; CHECK: [[ADCX64rm:%[0-9]+]]:gr64 = ADCX64rm [[ADCX64rm]], %stack.1, 1, $noreg, 0, $noreg, implicit-def $eflags, implicit killed $eflags :: (load 8 from %stack.1)
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; CHECK: [[SETCCr:%[0-9]+]]:gr8 = SETCCr 2, implicit killed $eflags
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; CHECK: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm %stack.0, 1, $noreg, 0, $noreg :: (load 8 from %stack.0)
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; CHECK: MOV64mr [[MOV64rm]], 1, $noreg, 0, $noreg, [[ADCX64rm]] :: (store 8 into %ir.3, align 1)
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; CHECK: $al = COPY [[SETCCr]]
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; CHECK: RET 0, $al
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%3:gr64 = COPY $rcx
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%2:gr64 = COPY $rdx
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%6:gr64 = COPY $rsi
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%0:gr32 = COPY $edi
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INLINEASM &nop, 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $rax, 12 /* clobber */, implicit-def dead early-clobber $rbx, 12 /* clobber */, implicit-def dead early-clobber $rcx, 12 /* clobber */, implicit-def dead early-clobber $rdx, 12 /* clobber */, implicit-def dead early-clobber $rsi, 12 /* clobber */, implicit-def dead early-clobber $rdi, 12 /* clobber */, implicit-def dead early-clobber $rbp, 12 /* clobber */, implicit-def dead early-clobber $r8, 12 /* clobber */, implicit-def dead early-clobber $r9, 12 /* clobber */, implicit-def dead early-clobber $r10, 12 /* clobber */, implicit-def dead early-clobber $r11, 12 /* clobber */, implicit-def dead early-clobber $r12, 12 /* clobber */, implicit-def dead early-clobber $r13, 12 /* clobber */, implicit-def dead early-clobber $r14, 12 /* clobber */, implicit-def dead early-clobber $r15
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dead %0.sub_8bit:gr32 = ADD8ri %0.sub_8bit, -1, implicit-def $eflags
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%6:gr64 = ADCX64rr %6, %2, implicit-def $eflags, implicit killed $eflags
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%7:gr8 = SETCCr 2, implicit killed $eflags
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MOV64mr %3, 1, $noreg, 0, $noreg, %6 :: (store 8 into %ir.3, align 1)
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$al = COPY %7
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RET 0, killed $al
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...
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---
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name: stack_fold_adox32
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alignment: 16
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tracksRegLiveness: true
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registers:
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- { id: 0, class: gr32 }
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- { id: 1, class: gr32 }
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- { id: 2, class: gr32 }
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- { id: 3, class: gr64 }
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- { id: 4, class: gr8 }
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- { id: 5, class: gr8 }
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- { id: 6, class: gr32 }
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- { id: 7, class: gr8 }
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liveins:
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- { reg: '$edi', virtual-reg: '%0' }
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- { reg: '$esi', virtual-reg: '%1' }
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- { reg: '$edx', virtual-reg: '%2' }
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- { reg: '$rcx', virtual-reg: '%3' }
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body: |
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bb.0 (%ir-block.0):
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liveins: $edi, $esi, $edx, $rcx
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; CHECK-LABEL: name: stack_fold_adox32
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; CHECK: liveins: $edi, $esi, $edx, $rcx
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; CHECK: MOV64mr %stack.0, 1, $noreg, 0, $noreg, $rcx :: (store 8 into %stack.0)
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; CHECK: MOV32mr %stack.1, 1, $noreg, 0, $noreg, $edx :: (store 4 into %stack.1)
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; CHECK: MOV32mr %stack.2, 1, $noreg, 0, $noreg, $esi :: (store 4 into %stack.2)
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; CHECK: MOV32mr %stack.3, 1, $noreg, 0, $noreg, $edi :: (store 4 into %stack.3)
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; CHECK: INLINEASM &nop, 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $rax, 12 /* clobber */, implicit-def dead early-clobber $rbx, 12 /* clobber */, implicit-def dead early-clobber $rcx, 12 /* clobber */, implicit-def dead early-clobber $rdx, 12 /* clobber */, implicit-def dead early-clobber $rsi, 12 /* clobber */, implicit-def dead early-clobber $rdi, 12 /* clobber */, implicit-def dead early-clobber $rbp, 12 /* clobber */, implicit-def dead early-clobber $r8, 12 /* clobber */, implicit-def dead early-clobber $r9, 12 /* clobber */, implicit-def dead early-clobber $r10, 12 /* clobber */, implicit-def dead early-clobber $r11, 12 /* clobber */, implicit-def dead early-clobber $r12, 12 /* clobber */, implicit-def dead early-clobber $r13, 12 /* clobber */, implicit-def dead early-clobber $r14, 12 /* clobber */, implicit-def dead early-clobber $r15
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; CHECK: [[MOV32rm:%[0-9]+]]:gr32 = MOV32rm %stack.3, 1, $noreg, 0, $noreg :: (load 4 from %stack.3)
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; CHECK: dead [[MOV32rm]].sub_8bit:gr32 = ADD8ri [[MOV32rm]].sub_8bit, -1, implicit-def $eflags
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; CHECK: [[MOV32rm1:%[0-9]+]]:gr32 = MOV32rm %stack.2, 1, $noreg, 0, $noreg :: (load 4 from %stack.2)
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; CHECK: [[ADOX32rm:%[0-9]+]]:gr32 = ADOX32rm [[ADOX32rm]], %stack.1, 1, $noreg, 0, $noreg, implicit-def $eflags, implicit killed $eflags :: (load 4 from %stack.1)
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; CHECK: [[SETCCr:%[0-9]+]]:gr8 = SETCCr 2, implicit killed $eflags
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; CHECK: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm %stack.0, 1, $noreg, 0, $noreg :: (load 8 from %stack.0)
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; CHECK: MOV32mr [[MOV64rm]], 1, $noreg, 0, $noreg, [[ADOX32rm]] :: (store 4 into %ir.3, align 1)
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; CHECK: $al = COPY [[SETCCr]]
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; CHECK: RET 0, $al
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%3:gr64 = COPY $rcx
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%2:gr32 = COPY $edx
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%6:gr32 = COPY $esi
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%0:gr32 = COPY $edi
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INLINEASM &nop, 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $rax, 12 /* clobber */, implicit-def dead early-clobber $rbx, 12 /* clobber */, implicit-def dead early-clobber $rcx, 12 /* clobber */, implicit-def dead early-clobber $rdx, 12 /* clobber */, implicit-def dead early-clobber $rsi, 12 /* clobber */, implicit-def dead early-clobber $rdi, 12 /* clobber */, implicit-def dead early-clobber $rbp, 12 /* clobber */, implicit-def dead early-clobber $r8, 12 /* clobber */, implicit-def dead early-clobber $r9, 12 /* clobber */, implicit-def dead early-clobber $r10, 12 /* clobber */, implicit-def dead early-clobber $r11, 12 /* clobber */, implicit-def dead early-clobber $r12, 12 /* clobber */, implicit-def dead early-clobber $r13, 12 /* clobber */, implicit-def dead early-clobber $r14, 12 /* clobber */, implicit-def dead early-clobber $r15
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dead %0.sub_8bit:gr32 = ADD8ri %0.sub_8bit, -1, implicit-def $eflags
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%6:gr32 = ADOX32rr %6, %2, implicit-def $eflags, implicit killed $eflags
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%7:gr8 = SETCCr 2, implicit killed $eflags
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MOV32mr %3, 1, $noreg, 0, $noreg, %6 :: (store 4 into %ir.3, align 1)
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$al = COPY %7
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RET 0, killed $al
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...
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---
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name: stack_fold_adox64
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alignment: 16
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tracksRegLiveness: true
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registers:
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- { id: 0, class: gr32 }
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- { id: 1, class: gr64 }
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- { id: 2, class: gr64 }
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- { id: 3, class: gr64 }
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- { id: 4, class: gr8 }
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- { id: 5, class: gr8 }
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- { id: 6, class: gr64 }
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- { id: 7, class: gr8 }
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liveins:
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- { reg: '$edi', virtual-reg: '%0' }
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- { reg: '$rsi', virtual-reg: '%1' }
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- { reg: '$rdx', virtual-reg: '%2' }
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- { reg: '$rcx', virtual-reg: '%3' }
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body: |
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bb.0 (%ir-block.0):
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liveins: $edi, $rsi, $rdx, $rcx
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; CHECK-LABEL: name: stack_fold_adox64
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; CHECK: liveins: $edi, $rsi, $rdx, $rcx
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; CHECK: MOV64mr %stack.0, 1, $noreg, 0, $noreg, $rcx :: (store 8 into %stack.0)
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; CHECK: MOV64mr %stack.1, 1, $noreg, 0, $noreg, $rdx :: (store 8 into %stack.1)
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; CHECK: MOV64mr %stack.2, 1, $noreg, 0, $noreg, $rsi :: (store 8 into %stack.2)
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; CHECK: MOV32mr %stack.3, 1, $noreg, 0, $noreg, $edi :: (store 4 into %stack.3)
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; CHECK: INLINEASM &nop, 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $rax, 12 /* clobber */, implicit-def dead early-clobber $rbx, 12 /* clobber */, implicit-def dead early-clobber $rcx, 12 /* clobber */, implicit-def dead early-clobber $rdx, 12 /* clobber */, implicit-def dead early-clobber $rsi, 12 /* clobber */, implicit-def dead early-clobber $rdi, 12 /* clobber */, implicit-def dead early-clobber $rbp, 12 /* clobber */, implicit-def dead early-clobber $r8, 12 /* clobber */, implicit-def dead early-clobber $r9, 12 /* clobber */, implicit-def dead early-clobber $r10, 12 /* clobber */, implicit-def dead early-clobber $r11, 12 /* clobber */, implicit-def dead early-clobber $r12, 12 /* clobber */, implicit-def dead early-clobber $r13, 12 /* clobber */, implicit-def dead early-clobber $r14, 12 /* clobber */, implicit-def dead early-clobber $r15
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; CHECK: [[MOV32rm:%[0-9]+]]:gr32 = MOV32rm %stack.3, 1, $noreg, 0, $noreg :: (load 4 from %stack.3)
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; CHECK: dead [[MOV32rm]].sub_8bit:gr32 = ADD8ri [[MOV32rm]].sub_8bit, -1, implicit-def $eflags
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; CHECK: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm %stack.2, 1, $noreg, 0, $noreg :: (load 8 from %stack.2)
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; CHECK: [[ADOX64rm:%[0-9]+]]:gr64 = ADOX64rm [[ADOX64rm]], %stack.1, 1, $noreg, 0, $noreg, implicit-def $eflags, implicit killed $eflags :: (load 8 from %stack.1)
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; CHECK: [[SETCCr:%[0-9]+]]:gr8 = SETCCr 2, implicit killed $eflags
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; CHECK: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm %stack.0, 1, $noreg, 0, $noreg :: (load 8 from %stack.0)
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; CHECK: MOV64mr [[MOV64rm]], 1, $noreg, 0, $noreg, [[ADOX64rm]] :: (store 8 into %ir.3, align 1)
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; CHECK: $al = COPY [[SETCCr]]
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; CHECK: RET 0, $al
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%3:gr64 = COPY $rcx
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%2:gr64 = COPY $rdx
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%6:gr64 = COPY $rsi
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%0:gr32 = COPY $edi
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INLINEASM &nop, 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $rax, 12 /* clobber */, implicit-def dead early-clobber $rbx, 12 /* clobber */, implicit-def dead early-clobber $rcx, 12 /* clobber */, implicit-def dead early-clobber $rdx, 12 /* clobber */, implicit-def dead early-clobber $rsi, 12 /* clobber */, implicit-def dead early-clobber $rdi, 12 /* clobber */, implicit-def dead early-clobber $rbp, 12 /* clobber */, implicit-def dead early-clobber $r8, 12 /* clobber */, implicit-def dead early-clobber $r9, 12 /* clobber */, implicit-def dead early-clobber $r10, 12 /* clobber */, implicit-def dead early-clobber $r11, 12 /* clobber */, implicit-def dead early-clobber $r12, 12 /* clobber */, implicit-def dead early-clobber $r13, 12 /* clobber */, implicit-def dead early-clobber $r14, 12 /* clobber */, implicit-def dead early-clobber $r15
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dead %0.sub_8bit:gr32 = ADD8ri %0.sub_8bit, -1, implicit-def $eflags
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%6:gr64 = ADOX64rr %6, %2, implicit-def $eflags, implicit killed $eflags
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%7:gr8 = SETCCr 2, implicit killed $eflags
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MOV64mr %3, 1, $noreg, 0, $noreg, %6 :: (store 8 into %ir.3, align 1)
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$al = COPY %7
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RET 0, killed $al
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...
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