llvm/test/CodeGen/MIR/X86/function-liveins.mir

# RUN: llc -march=x86-64 -run-pass none -o - %s | FileCheck %s
# This test ensures that the MIR parser parses machine function's liveins
# correctly.

--- |

  define i32 @test(i32 %a, i32 %b) {
  body:
    %c = add i32 %a, %b
    ret i32 %c
  }

...
---
name:            test
tracksRegLiveness: true
registers:
  - { id: 0, class: gr32 }
  - { id: 1, class: gr32 }
  - { id: 2, class: gr32 }
# CHECK: liveins:
# CHECK-NEXT: - { reg: '$edi', virtual-reg: '%0' }
# CHECK-NEXT: - { reg: '$esi', virtual-reg: '%1' }
liveins:
  - { reg: '$edi', virtual-reg: '%0' }
  - { reg: '$esi', virtual-reg: '%1' }
body: |
  bb.0.body:
    liveins: $edi, $esi

    %1 = COPY $esi
    %0 = COPY $edi
    %2 = ADD32rr %0, %1, implicit-def dead $eflags
    $eax = COPY %2
    RET64 $eax
...