llvm/test/CodeGen/X86/x87-stack-pop.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=i686-- -run-pass x86-codegen -O2 -o - %s | FileCheck %s

---
name: func_fxam
tracksRegLiveness: true
fixedStack:
  - { id: 0, type: default, offset: 0, size: 10, alignment: 16 }
body:             |
  bb.0.entry:
    ; CHECK-LABEL: name: func_fxam
    ; CHECK: nofpexcept LD_F80m %fixed-stack.0, 1, $noreg, 0, $noreg, implicit-def dead $fpsw, implicit $fpcw, implicit-def $st0 :: (load (s80) from %fixed-stack.0, align 16)
    ; CHECK-NEXT: XAM_F implicit-def $fpsw, implicit $st0
    ; CHECK-NEXT: FNSTSW16r implicit-def $ax, implicit-def dead $fpsw, implicit $fpsw
    ; CHECK-NEXT: ST_FPrr $st0, implicit-def $fpsw, implicit $fpcw
    ; CHECK-NEXT: renamable $ax = KILL $ax, implicit-def $eax
    ; CHECK-NEXT: RET 0, $eax
    renamable $fp0 = nofpexcept LD_Fp80m %fixed-stack.0, 1, $noreg, 0, $noreg, implicit-def dead $fpsw, implicit $fpcw :: (load (s80) from %fixed-stack.0, align 16)
    XAM_Fp80 killed renamable $fp0, implicit-def $fpsw
    FNSTSW16r implicit-def $ax, implicit-def dead $fpsw, implicit $fpsw
    renamable $ax = KILL $ax, implicit-def $eax
    RET 0, $eax


...
---
name: func_ftst
tracksRegLiveness: true
fixedStack:
  - { id: 0, type: default, offset: 0, size: 10, alignment: 16 }
body:             |
  bb.0.entry:
    ; CHECK-LABEL: name: func_ftst
    ; CHECK: nofpexcept LD_F80m %fixed-stack.0, 1, $noreg, 0, $noreg, implicit-def dead $fpsw, implicit $fpcw, implicit-def $st0 :: (load (s80) from %fixed-stack.0, align 16)
    ; CHECK-NEXT: TST_F implicit-def $fpsw, implicit $fpcw, implicit $st0
    ; CHECK-NEXT: FNSTSW16r implicit-def $ax, implicit-def dead $fpsw, implicit $fpsw
    ; CHECK-NEXT: ST_FPrr $st0, implicit-def $fpsw, implicit $fpcw
    ; CHECK-NEXT: renamable $ax = KILL $ax, implicit-def $eax
    ; CHECK-NEXT: RET 0, $eax
    renamable $fp0 = nofpexcept LD_Fp80m %fixed-stack.0, 1, $noreg, 0, $noreg, implicit-def dead $fpsw, implicit $fpcw :: (load (s80) from %fixed-stack.0, align 16)
    TST_Fp80 killed renamable $fp0, implicit-def $fpsw, implicit $fpcw
    FNSTSW16r implicit-def $ax, implicit-def dead $fpsw, implicit $fpsw
    renamable $ax = KILL $ax, implicit-def $eax
    RET 0, $eax

...
---
name: func_deaddef
tracksRegLiveness: true
fixedStack:
  - { id: 0, type: default, offset: 0, size: 10, alignment: 16 }
body:             |
  bb.0.entry:
    ; CHECK-LABEL: name: func_deaddef
    ; CHECK: nofpexcept LD_F80m %fixed-stack.0, 1, $noreg, 0, $noreg, implicit-def dead $fpsw, implicit $fpcw, implicit-def $st0 :: (load (s80) from %fixed-stack.0, align 16)
    ; CHECK-NEXT: TST_F implicit-def dead $fpsw, implicit $fpcw, implicit $st0
    ; CHECK-NEXT: ST_FPrr $st0, implicit-def $fpsw, implicit $fpcw
    ; CHECK-NEXT: FNSTSW16r implicit-def $ax, implicit-def dead $fpsw, implicit $fpsw
    ; CHECK-NEXT: renamable $ax = KILL $ax, implicit-def $eax
    ; CHECK-NEXT: RET 0, $eax
    renamable $fp0 = nofpexcept LD_Fp80m %fixed-stack.0, 1, $noreg, 0, $noreg, implicit-def dead $fpsw, implicit $fpcw :: (load (s80) from %fixed-stack.0, align 16)
    TST_Fp80 killed renamable $fp0, implicit-def dead $fpsw, implicit $fpcw
    FNSTSW16r implicit-def $ax, implicit-def dead $fpsw, implicit $fpsw
    renamable $ax = KILL $ax, implicit-def $eax
    RET 0, $eax

...