# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=amdgcn -run-pass=si-i1-copies -verify-machineinstrs %s -o - | FileCheck -check-prefixes=GCN %s

# Test that the new IMPLICIT_DEF is inserted in the correct location.
---
name:            test_undef
tracksRegLiveness: true
body:             |
  ; GCN-LABEL: name: test_undef
  ; GCN: bb.0:
  ; GCN-NEXT:   successors: %bb.1(0x80000000)
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   S_BRANCH %bb.1
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.1:
  ; GCN-NEXT:   [[DEF:%[0-9]+]]:sreg_64 = IMPLICIT_DEF
  ; GCN-NEXT:   [[COPY:%[0-9]+]]:sreg_64_xexec = COPY [[DEF]]
  ; GCN-NEXT:   [[V_CNDMASK_B32_e64_:%[0-9]+]]:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, [[COPY]], implicit $exec
  bb.0:
    successors: %bb.1

    %0:vreg_1 = IMPLICIT_DEF
    S_BRANCH %bb.1

  bb.1:
    %1:vreg_1 = PHI %0, %bb.0
    %2:sreg_64_xexec = COPY %1
    %3:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %2, implicit $exec

...