test/CodeGen/X86/GlobalISel/legalize-fsub-scalar.mir

# RUN: llc -mtriple=x86_64-linux-gnu -global-isel -run-pass=legalizer %s -o - | FileCheck %s
--- |

  define float @test_fsub_float(float %arg1, float %arg2) {
    %ret = fsub float %arg1, %arg2
    ret float %ret
  }

  define double @test_fsub_double(double %arg1, double %arg2) {
    %ret = fsub double %arg1, %arg2
    ret double %ret
  }

...
---
name:            test_fsub_float
# CHECK-LABEL: name:  test_fsub_float
alignment:       4
legalized:       false
regBankSelected: false
registers:
  - { id: 0, class: _, preferred-register: '' }
  - { id: 1, class: _, preferred-register: '' }
  - { id: 2, class: _, preferred-register: '' }
liveins:
fixedStack:
stack:
constants:
# CHECK:          %0(s32) = COPY %xmm0
# CHECK-NEXT:     %1(s32) = COPY %xmm1
# CHECK-NEXT:     %2(s32) = G_FSUB %0, %1
# CHECK-NEXT:     %xmm0 = COPY %2(s32)
# CHECK-NEXT:     RET 0, implicit %xmm0
body:             |
  bb.1 (%ir-block.0):
    liveins: %xmm0, %xmm1

    %0(s32) = COPY %xmm0
    %1(s32) = COPY %xmm1
    %2(s32) = G_FSUB %0, %1
    %xmm0 = COPY %2(s32)
    RET 0, implicit %xmm0

...
---
name:            test_fsub_double
# CHECK-LABEL: name:  test_fsub_double
alignment:       4
legalized:       false
regBankSelected: false
registers:
  - { id: 0, class: _, preferred-register: '' }
  - { id: 1, class: _, preferred-register: '' }
  - { id: 2, class: _, preferred-register: '' }
liveins:
fixedStack:
stack:
constants:
# CHECK:          %0(s64) = COPY %xmm0
# CHECK-NEXT:     %1(s64) = COPY %xmm1
# CHECK-NEXT:     %2(s64) = G_FSUB %0, %1
# CHECK-NEXT:     %xmm0 = COPY %2(s64)
# CHECK-NEXT:     RET 0, implicit %xmm0
body:             |
  bb.1 (%ir-block.0):
    liveins: %xmm0, %xmm1

    %0(s64) = COPY %xmm0
    %1(s64) = COPY %xmm1
    %2(s64) = G_FSUB %0, %1
    %xmm0 = COPY %2(s64)
    RET 0, implicit %xmm0

...