test/CodeGen/MIR/X86/roundtrip.mir

# RUN: llc -o - %s -mtriple=x86_64-- -run-pass=none | llc -o - -x mir - -mtriple=x86_64-- -run-pass=none | FileCheck %s
---
# CHECK-LABEL: name: func0
# CHECK: registers:
# CHECK:   - { id: 0, class: gr32, preferred-register: '' }
# CHECK:   - { id: 1, class: gr32, preferred-register: '' }
# CHECK: body: |
# CHECK:   bb.0:
# CHECK:     %0:gr32 = MOV32r0 implicit-def %eflags
# CHECK:     dead %1:gr32 = COPY %0
# CHECK:     MOV32mr undef %rcx, 1, _, 0, _, killed %0 :: (volatile store 4)
# CHECK:     RETQ undef %eax
name: func0
body: |
  bb.0:
    %0 : gr32 = MOV32r0 implicit-def %eflags
    dead %1 : gr32 = COPY %0
    MOV32mr undef %rcx, 1, _, 0, _, killed %0 :: (volatile store 4)
    RETQ undef %eax
...