llvm/test/CodeGen/X86/fastregalloc-selfloop.mir

# RUN: llc -mtriple=x86_64-- -run-pass=regallocfast -o - %s | FileCheck %s
# RUN: llc -mtriple=x86_64-- -passes=regallocfast -o - %s | FileCheck %s

...
---
name:            foo
alignment:       16
tracksRegLiveness: true
registers:
  - { id: 0, class: vr128 }
frameInfo:
  maxAlignment:    16
stack:
  - { id: 0, size: 64, alignment: 16 }
machineFunctionInfo: {}
body:             |
  bb.0.entry:
    ; CHECK:      renamable $xmm1 = V_SET0
    ; CHECK-NEXT: renamable $xmm0 = V_SET0
    ; CHECK-NEXT: renamable $xmm1 = PXORrr renamable $xmm1, renamable $xmm0
    ; CHECK-NEXT: MOVAPSmr %stack.0, 1, $noreg, 0, $noreg, killed renamable $xmm1
    ; CHECK-NEXT: MOVAPSmr %stack.0, 1, $noreg, 16, $noreg, killed renamable $xmm0

    %0:vr128 = V_SET0
    %1:vr128 = V_SET0
    %0:vr128 = PXORrr %0, %1
    MOVAPSmr %stack.0, 1, $noreg, 0, $noreg, %0
    MOVAPSmr %stack.0, 1, $noreg, 16, $noreg, %1
    JMP_1 %bb.0.entry
    RET 0

...