test/CodeGen/AMDGPU/collapse-endcf-broken.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=amdgcn -verify-machineinstrs -run-pass=si-optimize-exec-masking-pre-ra %s -o - | FileCheck -check-prefix=GXN %s

# FIXME: This is a miscompile, and the s_or_b64s need to be preserved.

---
name: invalid_end_cf_fold_0
tracksRegLiveness: true
liveins:
  - { reg: '$vgpr0', virtual-reg: '%0' }
  - { reg: '$sgpr0_sgpr1', virtual-reg: '%1' }
machineFunctionInfo:
  isEntryFunction: true
body:             |
  ; GXN-LABEL: name: invalid_end_cf_fold_0
  ; GXN: bb.0:
  ; GXN:   successors: %bb.1(0x80000000)
  ; GXN:   liveins: $vgpr0, $sgpr0_sgpr1
  ; GXN:   [[COPY:%[0-9]+]]:sgpr_64 = COPY $sgpr0_sgpr1
  ; GXN:   $exec = S_OR_B64 $exec, [[COPY]], implicit-def $scc
  ; GXN:   [[COPY1:%[0-9]+]]:sgpr_64 = COPY $exec
  ; GXN: bb.1:
  ; GXN:   successors: %bb.2(0x80000000)
  ; GXN: bb.2:
  ; GXN:   $exec = S_OR_B64 $exec, [[COPY1]], implicit-def $scc
  ; GXN:   [[DEF:%[0-9]+]]:vgpr_32 = IMPLICIT_DEF
  ; GXN:   [[DEF1:%[0-9]+]]:vgpr_32 = IMPLICIT_DEF
  ; GXN:   DS_WRITE_B32 [[DEF]], [[DEF1]], 0, 0, implicit $m0, implicit $exec :: (store 4, addrspace 3)
  ; GXN:   S_ENDPGM 0
  bb.0:
    liveins: $vgpr0, $sgpr0_sgpr1

    %0:sgpr_64 = COPY $sgpr0_sgpr1
    %1:sgpr_64 = COPY $exec
    $exec = S_OR_B64 $exec, %0, implicit-def $scc
    %2:sgpr_64 = COPY $exec

  bb.1:
    $exec = S_OR_B64 $exec, %1, implicit-def $scc

  bb.2:
    $exec = S_OR_B64 $exec, %2, implicit-def $scc

    %5:vgpr_32 = IMPLICIT_DEF
    %6:vgpr_32 = IMPLICIT_DEF
    DS_WRITE_B32 %5, %6, 0, 0, implicit $m0, implicit $exec :: (store 4, addrspace 3)
    S_ENDPGM 0

...