test/CodeGen/MIR/X86/implicit-register-flag.mir

# RUN: llc -march=x86-64 -start-after branch-folder -stop-after branch-folder -o /dev/null %s | FileCheck %s
# This test ensures that the MIR parser parses the 'implicit' and 'implicit-def'
# register flags correctly.

--- |

  define i32 @foo(i32 %a) {
  entry:
    %0 = icmp sle i32 %a, 10
    br i1 %0, label %less, label %exit

  less:
    ret i32 0

  exit:
    ret i32 %a
  }

...
---
name:            foo
body:
  - id:          0
    name:        entry
    instructions:
      # CHECK:      - 'CMP32ri8 %edi, 10, implicit-def %eflags'
      # CHECK-NEXT: - 'JG_1 %bb.2.exit, implicit %eflags'
      - 'CMP32ri8 %edi, 10, implicit-def %eflags'
      - 'JG_1 %bb.2.exit, implicit %eflags'
  - id:          1
    name:        less
    instructions:
      # CHECK: - '%eax = MOV32r0 implicit-def %eflags'
      - '%eax = MOV32r0 implicit-def %eflags'
      - 'RETQ %eax'
  - id:          2
    name:        exit
    instructions:
      - '%eax = COPY %edi'
      - 'RETQ %eax'
...