llvm/llvm/test/MachineVerifier/AMDGPU/undef-virt-reg-entry-block.mir

# XFAIL: *
# RUN: not --crash llc -o - -mtriple=amdgcn-amd-amdhsa -run-pass=none -verify-machineinstrs %s

 # FIXME: This should catch the undefined use of %0

---
name:            undef_virtreg
body:             |
  bb.0:

    S_ENDPGM 0, implicit %0:sreg_32

...