# RUN: not llc -run-pass=none -filetype=null %s 2>&1 | FileCheck %s --check-prefix=ERR

---
name:  flags
registers:
  - { id: 0, class: _, flags: [ 'VFLAG_ERR' ] }
body: |
  bb.0:
    liveins: $w0
    %0 = G_ADD $w0, $w0
...
# ERR: use of undefined register flag
# ERR: VFLAG_ERR