# RUN: not llc -march=x86-64 -start-after branch-folder -stop-after branch-folder -o /dev/null %s 2>&1 | FileCheck %s

--- |

  define i32 @test(i32 %a) {
  body:
    ret i32 %a
  }

...
---
name:            test
body:
  - id:          0
    name:        body
    # CHECK: [[@LINE+1]]:21: expected a named register
    liveins:     [ '%0' ]
    instructions:
      - '%eax = COPY %edi'
      - 'RETQ %eax'
...