nuudlman/llvm: llvm/test/CodeGen/X86/stack-folding-adx.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -o - -mtriple=x86_64-- -run-pass=greedy %s | FileCheck %s
# Tests for stack folding ADCX and ADOX. The ADOX tests were manually constructed by modifying ADCX tests to use OF instead of CF.
--- |
  ; Function Attrs: nounwind
  define i8 @stack_fold_adcx32(i8 %a0, i32 %a1, i32 %a2, i8* %a3) #0 {
    tail call void asm sideeffect "nop", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
    %1 = call { i8, i32 } @llvm.x86.addcarry.32(i8 %a0, i32 %a1, i32 %a2)
    %2 = extractvalue { i8, i32 } %1, 1
    %3 = bitcast i8* %a3 to i32*
    store i32 %2, i32* %3, align 1
    %4 = extractvalue { i8, i32 } %1, 0
    ret i8 %4
  }

  ; Function Attrs: nounwind
  define i8 @stack_fold_adcx64(i8 %a0, i64 %a1, i64 %a2, i8* %a3) #0 {
    tail call void asm sideeffect "nop", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
    %1 = call { i8, i64 } @llvm.x86.addcarry.64(i8 %a0, i64 %a1, i64 %a2)
    %2 = extractvalue { i8, i64 } %1, 1
    %3 = bitcast i8* %a3 to i64*
    store i64 %2, i64* %3, align 1
    %4 = extractvalue { i8, i64 } %1, 0
    ret i8 %4
  }

  ; Function Attrs: nounwind
  define i8 @stack_fold_adox32(i8 %a0, i32 %a1, i32 %a2, i8* %a3) #0 {
    tail call void asm sideeffect "nop", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
    %1 = call { i8, i32 } @llvm.x86.addcarry.32(i8 %a0, i32 %a1, i32 %a2)
    %2 = extractvalue { i8, i32 } %1, 1
    %3 = bitcast i8* %a3 to i32*
    store i32 %2, i32* %3, align 1
    %4 = extractvalue { i8, i32 } %1, 0
    ret i8 %4
  }

  ; Function Attrs: nounwind
  define i8 @stack_fold_adox64(i8 %a0, i64 %a1, i64 %a2, i8* %a3) #0 {
    tail call void asm sideeffect "nop", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
    %1 = call { i8, i64 } @llvm.x86.addcarry.64(i8 %a0, i64 %a1, i64 %a2)
    %2 = extractvalue { i8, i64 } %1, 1
    %3 = bitcast i8* %a3 to i64*
    store i64 %2, i64* %3, align 1
    %4 = extractvalue { i8, i64 } %1, 0
    ret i8 %4
  }

  ; Function Attrs: nounwind readnone
  declare { i8, i32 } @llvm.x86.addcarry.32(i8, i32, i32) #1

  ; Function Attrs: nounwind readnone
  declare { i8, i64 } @llvm.x86.addcarry.64(i8, i64, i64) #1

  ; Function Attrs: nounwind
  declare void @llvm.stackprotector(i8*, i8**) #2

  attributes #0 = { nounwind "target-features"="+adx" }
  attributes #1 = { nounwind readnone "target-features"="+adx" }
  attributes #2 = { nounwind }

...
---
name:            stack_fold_adcx32
alignment:       16
tracksRegLiveness: true
registers:
  - { id: 0, class: gr32 }
  - { id: 1, class: gr32 }
  - { id: 2, class: gr32 }
  - { id: 3, class: gr64 }
  - { id: 4, class: gr8 }
  - { id: 5, class: gr8 }
  - { id: 6, class: gr32 }
  - { id: 7, class: gr8 }
liveins:
  - { reg: '$edi', virtual-reg: '%0' }
  - { reg: '$esi', virtual-reg: '%1' }
  - { reg: '$edx', virtual-reg: '%2' }
  - { reg: '$rcx', virtual-reg: '%3' }
body:             |
  bb.0 (%ir-block.0):
    liveins: $edi, $esi, $edx, $rcx

    ; CHECK-LABEL: name: stack_fold_adcx32
    ; CHECK: liveins: $edi, $esi, $edx, $rcx
    ; CHECK: MOV64mr %stack.0, 1, $noreg, 0, $noreg, $rcx :: (store (s64) into %stack.0)
    ; CHECK: MOV32mr %stack.1, 1, $noreg, 0, $noreg, $edx :: (store (s32) into %stack.1)
    ; CHECK: MOV32mr %stack.2, 1, $noreg, 0, $noreg, $esi :: (store (s32) into %stack.2)
    ; CHECK: MOV32mr %stack.3, 1, $noreg, 0, $noreg, $edi :: (store (s32) into %stack.3)
    ; 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
    ; CHECK: [[MOV32rm:%[0-9]+]]:gr32 = MOV32rm %stack.3, 1, $noreg, 0, $noreg :: (load (s32) from %stack.3)
    ; CHECK: dead [[MOV32rm]].sub_8bit:gr32 = ADD8ri [[MOV32rm]].sub_8bit, -1, implicit-def $eflags
    ; CHECK: [[MOV32rm1:%[0-9]+]]:gr32 = MOV32rm %stack.2, 1, $noreg, 0, $noreg :: (load (s32) from %stack.2)
    ; CHECK: [[ADCX32rm:%[0-9]+]]:gr32 = ADCX32rm [[ADCX32rm]], %stack.1, 1, $noreg, 0, $noreg, implicit-def $eflags, implicit killed $eflags :: (load (s32) from %stack.1)
    ; CHECK: [[SETCCr:%[0-9]+]]:gr8 = SETCCr 2, implicit killed $eflags
    ; CHECK: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm %stack.0, 1, $noreg, 0, $noreg :: (load (s64) from %stack.0)
    ; CHECK: MOV32mr [[MOV64rm]], 1, $noreg, 0, $noreg, [[ADCX32rm]] :: (store (s32) into %ir.3, align 1)
    ; CHECK: $al = COPY [[SETCCr]]
    ; CHECK: RET 0, $al
    %3:gr64 = COPY $rcx
    %2:gr32 = COPY $edx
    %6:gr32 = COPY $esi
    %0:gr32 = COPY $edi
    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
    dead %0.sub_8bit:gr32 = ADD8ri %0.sub_8bit, -1, implicit-def $eflags
    %6:gr32 = ADCX32rr %6, %2, implicit-def $eflags, implicit killed $eflags
    %7:gr8 = SETCCr 2, implicit killed $eflags
    MOV32mr %3, 1, $noreg, 0, $noreg, %6 :: (store (s32) into %ir.3, align 1)
    $al = COPY %7
    RET 0, killed $al

...
---
name:            stack_fold_adcx64
alignment:       16
tracksRegLiveness: true
registers:
  - { id: 0, class: gr32 }
  - { id: 1, class: gr64 }
  - { id: 2, class: gr64 }
  - { id: 3, class: gr64 }
  - { id: 4, class: gr8 }
  - { id: 5, class: gr8 }
  - { id: 6, class: gr64 }
  - { id: 7, class: gr8 }
liveins:
  - { reg: '$edi', virtual-reg: '%0' }
  - { reg: '$rsi', virtual-reg: '%1' }
  - { reg: '$rdx', virtual-reg: '%2' }
  - { reg: '$rcx', virtual-reg: '%3' }
body:             |
  bb.0 (%ir-block.0):
    liveins: $edi, $rsi, $rdx, $rcx

    ; CHECK-LABEL: name: stack_fold_adcx64
    ; CHECK: liveins: $edi, $rsi, $rdx, $rcx
    ; CHECK: MOV64mr %stack.0, 1, $noreg, 0, $noreg, $rcx :: (store (s64) into %stack.0)
    ; CHECK: MOV64mr %stack.1, 1, $noreg, 0, $noreg, $rdx :: (store (s64) into %stack.1)
    ; CHECK: MOV64mr %stack.2, 1, $noreg, 0, $noreg, $rsi :: (store (s64) into %stack.2)
    ; CHECK: MOV32mr %stack.3, 1, $noreg, 0, $noreg, $edi :: (store (s32) into %stack.3)
    ; 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
    ; CHECK: [[MOV32rm:%[0-9]+]]:gr32 = MOV32rm %stack.3, 1, $noreg, 0, $noreg :: (load (s32) from %stack.3)
    ; CHECK: dead [[MOV32rm]].sub_8bit:gr32 = ADD8ri [[MOV32rm]].sub_8bit, -1, implicit-def $eflags
    ; CHECK: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm %stack.2, 1, $noreg, 0, $noreg :: (load (s64) from %stack.2)
    ; CHECK: [[ADCX64rm:%[0-9]+]]:gr64 = ADCX64rm [[ADCX64rm]], %stack.1, 1, $noreg, 0, $noreg, implicit-def $eflags, implicit killed $eflags :: (load (s64) from %stack.1)
    ; CHECK: [[SETCCr:%[0-9]+]]:gr8 = SETCCr 2, implicit killed $eflags
    ; CHECK: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm %stack.0, 1, $noreg, 0, $noreg :: (load (s64) from %stack.0)
    ; CHECK: MOV64mr [[MOV64rm]], 1, $noreg, 0, $noreg, [[ADCX64rm]] :: (store (s64) into %ir.3, align 1)
    ; CHECK: $al = COPY [[SETCCr]]
    ; CHECK: RET 0, $al
    %3:gr64 = COPY $rcx
    %2:gr64 = COPY $rdx
    %6:gr64 = COPY $rsi
    %0:gr32 = COPY $edi
    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
    dead %0.sub_8bit:gr32 = ADD8ri %0.sub_8bit, -1, implicit-def $eflags
    %6:gr64 = ADCX64rr %6, %2, implicit-def $eflags, implicit killed $eflags
    %7:gr8 = SETCCr 2, implicit killed $eflags
    MOV64mr %3, 1, $noreg, 0, $noreg, %6 :: (store (s64) into %ir.3, align 1)
    $al = COPY %7
    RET 0, killed $al

...
---
name:            stack_fold_adox32
alignment:       16
tracksRegLiveness: true
registers:
  - { id: 0, class: gr32 }
  - { id: 1, class: gr32 }
  - { id: 2, class: gr32 }
  - { id: 3, class: gr64 }
  - { id: 4, class: gr8 }
  - { id: 5, class: gr8 }
  - { id: 6, class: gr32 }
  - { id: 7, class: gr8 }
liveins:
  - { reg: '$edi', virtual-reg: '%0' }
  - { reg: '$esi', virtual-reg: '%1' }
  - { reg: '$edx', virtual-reg: '%2' }
  - { reg: '$rcx', virtual-reg: '%3' }
body:             |
  bb.0 (%ir-block.0):
    liveins: $edi, $esi, $edx, $rcx

    ; CHECK-LABEL: name: stack_fold_adox32
    ; CHECK: liveins: $edi, $esi, $edx, $rcx
    ; CHECK: MOV64mr %stack.0, 1, $noreg, 0, $noreg, $rcx :: (store (s64) into %stack.0)
    ; CHECK: MOV32mr %stack.1, 1, $noreg, 0, $noreg, $edx :: (store (s32) into %stack.1)
    ; CHECK: MOV32mr %stack.2, 1, $noreg, 0, $noreg, $esi :: (store (s32) into %stack.2)
    ; CHECK: MOV32mr %stack.3, 1, $noreg, 0, $noreg, $edi :: (store (s32) into %stack.3)
    ; 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
    ; CHECK: [[MOV32rm:%[0-9]+]]:gr32 = MOV32rm %stack.3, 1, $noreg, 0, $noreg :: (load (s32) from %stack.3)
    ; CHECK: dead [[MOV32rm]].sub_8bit:gr32 = ADD8ri [[MOV32rm]].sub_8bit, -1, implicit-def $eflags
    ; CHECK: [[MOV32rm1:%[0-9]+]]:gr32 = MOV32rm %stack.2, 1, $noreg, 0, $noreg :: (load (s32) from %stack.2)
    ; CHECK: [[ADOX32rm:%[0-9]+]]:gr32 = ADOX32rm [[ADOX32rm]], %stack.1, 1, $noreg, 0, $noreg, implicit-def $eflags, implicit killed $eflags :: (load (s32) from %stack.1)
    ; CHECK: [[SETCCr:%[0-9]+]]:gr8 = SETCCr 2, implicit killed $eflags
    ; CHECK: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm %stack.0, 1, $noreg, 0, $noreg :: (load (s64) from %stack.0)
    ; CHECK: MOV32mr [[MOV64rm]], 1, $noreg, 0, $noreg, [[ADOX32rm]] :: (store (s32) into %ir.3, align 1)
    ; CHECK: $al = COPY [[SETCCr]]
    ; CHECK: RET 0, $al
    %3:gr64 = COPY $rcx
    %2:gr32 = COPY $edx
    %6:gr32 = COPY $esi
    %0:gr32 = COPY $edi
    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
    dead %0.sub_8bit:gr32 = ADD8ri %0.sub_8bit, -1, implicit-def $eflags
    %6:gr32 = ADOX32rr %6, %2, implicit-def $eflags, implicit killed $eflags
    %7:gr8 = SETCCr 2, implicit killed $eflags
    MOV32mr %3, 1, $noreg, 0, $noreg, %6 :: (store (s32) into %ir.3, align 1)
    $al = COPY %7
    RET 0, killed $al

...
---
name:            stack_fold_adox64
alignment:       16
tracksRegLiveness: true
registers:
  - { id: 0, class: gr32 }
  - { id: 1, class: gr64 }
  - { id: 2, class: gr64 }
  - { id: 3, class: gr64 }
  - { id: 4, class: gr8 }
  - { id: 5, class: gr8 }
  - { id: 6, class: gr64 }
  - { id: 7, class: gr8 }
liveins:
  - { reg: '$edi', virtual-reg: '%0' }
  - { reg: '$rsi', virtual-reg: '%1' }
  - { reg: '$rdx', virtual-reg: '%2' }
  - { reg: '$rcx', virtual-reg: '%3' }
body:             |
  bb.0 (%ir-block.0):
    liveins: $edi, $rsi, $rdx, $rcx

    ; CHECK-LABEL: name: stack_fold_adox64
    ; CHECK: liveins: $edi, $rsi, $rdx, $rcx
    ; CHECK: MOV64mr %stack.0, 1, $noreg, 0, $noreg, $rcx :: (store (s64) into %stack.0)
    ; CHECK: MOV64mr %stack.1, 1, $noreg, 0, $noreg, $rdx :: (store (s64) into %stack.1)
    ; CHECK: MOV64mr %stack.2, 1, $noreg, 0, $noreg, $rsi :: (store (s64) into %stack.2)
    ; CHECK: MOV32mr %stack.3, 1, $noreg, 0, $noreg, $edi :: (store (s32) into %stack.3)
    ; 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
    ; CHECK: [[MOV32rm:%[0-9]+]]:gr32 = MOV32rm %stack.3, 1, $noreg, 0, $noreg :: (load (s32) from %stack.3)
    ; CHECK: dead [[MOV32rm]].sub_8bit:gr32 = ADD8ri [[MOV32rm]].sub_8bit, -1, implicit-def $eflags
    ; CHECK: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm %stack.2, 1, $noreg, 0, $noreg :: (load (s64) from %stack.2)
    ; CHECK: [[ADOX64rm:%[0-9]+]]:gr64 = ADOX64rm [[ADOX64rm]], %stack.1, 1, $noreg, 0, $noreg, implicit-def $eflags, implicit killed $eflags :: (load (s64) from %stack.1)
    ; CHECK: [[SETCCr:%[0-9]+]]:gr8 = SETCCr 2, implicit killed $eflags
    ; CHECK: [[MOV64rm:%[0-9]+]]:gr64 = MOV64rm %stack.0, 1, $noreg, 0, $noreg :: (load (s64) from %stack.0)
    ; CHECK: MOV64mr [[MOV64rm]], 1, $noreg, 0, $noreg, [[ADOX64rm]] :: (store (s64) into %ir.3, align 1)
    ; CHECK: $al = COPY [[SETCCr]]
    ; CHECK: RET 0, $al
    %3:gr64 = COPY $rcx
    %2:gr64 = COPY $rdx
    %6:gr64 = COPY $rsi
    %0:gr32 = COPY $edi
    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
    dead %0.sub_8bit:gr32 = ADD8ri %0.sub_8bit, -1, implicit-def $eflags
    %6:gr64 = ADOX64rr %6, %2, implicit-def $eflags, implicit killed $eflags
    %7:gr8 = SETCCr 2, implicit killed $eflags
    MOV64mr %3, 1, $noreg, 0, $noreg, %6 :: (store (s64) into %ir.3, align 1)
    $al = COPY %7
    RET 0, killed $al

...