# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
# RUN: llc -mtriple=amdgcn-amd-amdpal -mcpu=gfx900 -start-before=greedy,2 -stop-after=tailduplication -verify-machineinstrs -o - %s | FileCheck %s

---
name:            undef_subreg_def_live_out_tailduplicate_vreg96_undef_sub1_sub2_assigned_physreg_interference
tracksRegLiveness: true
machineFunctionInfo:
  isEntryFunction: true
  scratchRSrcReg:  '$sgpr96_sgpr97_sgpr98_sgpr99'
  stackPtrOffsetReg: '$sgpr32'
body:             |
  ; CHECK-LABEL: name: undef_subreg_def_live_out_tailduplicate_vreg96_undef_sub1_sub2_assigned_physreg_interference
  ; CHECK: bb.0:
  ; CHECK-NEXT:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
  ; CHECK-NEXT:   liveins: $sgpr0, $vgpr2
  ; CHECK-NEXT: {{  $}}
  ; CHECK-NEXT:   S_CMP_EQ_U32 $sgpr0, 0, implicit-def $scc
  ; CHECK-NEXT:   S_CBRANCH_SCC0 %bb.2, implicit killed $scc
  ; CHECK-NEXT: {{  $}}
  ; CHECK-NEXT: bb.1:
  ; CHECK-NEXT:   liveins: $vgpr2
  ; CHECK-NEXT: {{  $}}
  ; CHECK-NEXT:   renamable $vgpr3 = V_MOV_B32_e32 0, implicit $exec, implicit-def $vgpr4_vgpr5
  ; CHECK-NEXT:   EXP 0, killed renamable $vgpr3, renamable $vgpr4, renamable $vgpr5, killed renamable $vgpr2, 0, 0, 0, implicit $exec
  ; CHECK-NEXT:   S_ENDPGM 0
  ; CHECK-NEXT: {{  $}}
  ; CHECK-NEXT: bb.2:
  ; CHECK-NEXT:   liveins: $vgpr2
  ; CHECK-NEXT: {{  $}}
  ; CHECK-NEXT:   S_NOP 0, implicit-def $sgpr4_sgpr5_sgpr6_sgpr7
  ; CHECK-NEXT:   renamable $vgpr0 = V_MOV_B32_e32 0, implicit $exec
  ; CHECK-NEXT:   renamable $vgpr3_vgpr4_vgpr5 = BUFFER_LOAD_FORMAT_XYZ_IDXEN killed renamable $vgpr0, $sgpr4_sgpr5_sgpr6_sgpr7, 0, 0, 0, 0, implicit $exec :: (dereferenceable load (s96), align 16, addrspace 8)
  ; CHECK-NEXT:   EXP 0, killed renamable $vgpr3, renamable $vgpr4, renamable $vgpr5, killed renamable $vgpr2, 0, 0, 0, implicit $exec
  ; CHECK-NEXT:   S_ENDPGM 0
  bb.0:
    liveins: $sgpr0, $vgpr2

    %2:vgpr_32 = COPY $vgpr2
    S_CMP_EQ_U32 killed $sgpr0, 0, implicit-def $scc
    S_CBRANCH_SCC0 %bb.2, implicit killed $scc

  bb.1:
    undef %0.sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
    S_BRANCH %bb.3

  bb.2:
    S_NOP 0, implicit-def $sgpr4_sgpr5_sgpr6_sgpr7
    %1:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
    %0:vreg_96 = BUFFER_LOAD_FORMAT_XYZ_IDXEN killed %1, $sgpr4_sgpr5_sgpr6_sgpr7, 0, 0, 0, 0, implicit $exec :: (dereferenceable load (s96), addrspace 8)

  bb.3:
    EXP 0, killed %0.sub0, killed %0.sub1, killed %0.sub2, %2:vgpr_32, 0, 0, 0, implicit $exec
    S_ENDPGM 0

...