# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=amdgcn-amd-amdhsa -run-pass=liveintervals,si-lower-control-flow,si-lower-control-flow -verify-machineinstrs %s -o - | FileCheck -check-prefixes=GCN %s

# Check that assert is not triggered

---
name: si-lower-control-flow
body: |
  bb.0:
    ; GCN-LABEL: name: si-lower-control-flow
    ; GCN: [[COPY:%[0-9]+]]:sgpr_64 = COPY $sgpr4_sgpr5
    ; GCN-NEXT: [[S_LOAD_DWORD_IMM:%[0-9]+]]:sreg_32_xm0_xexec = S_LOAD_DWORD_IMM [[COPY]], 16, 0
    ; GCN-NEXT: [[S_AND_B32_:%[0-9]+]]:sreg_32_xm0 = S_AND_B32 [[S_LOAD_DWORD_IMM]], 255, implicit-def $scc
    ; GCN-NEXT: dead %3:sreg_32_xm0 = S_AND_B32 65535, [[S_AND_B32_]], implicit-def $scc
    ; GCN-NEXT: S_ENDPGM 0
    %0:sgpr_64 = COPY $sgpr4_sgpr5
    %1:sreg_32_xm0_xexec = S_LOAD_DWORD_IMM %0, 16, 0
    %2:sreg_32_xm0 = S_AND_B32 %1, 255, implicit-def $scc
    %3:sreg_32_xm0 = S_AND_B32 65535, %2, implicit-def $scc
    S_ENDPGM 0
...

---
name: preserve_undef_flag_si_if_src
tracksRegLiveness: true
body:             |
  ; GCN-LABEL: name: preserve_undef_flag_si_if_src
  ; GCN: bb.0:
  ; GCN-NEXT:   successors: %bb.1(0x40000000), %bb.2(0x40000000)
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   [[COPY:%[0-9]+]]:sreg_64 = COPY $exec, implicit-def $exec
  ; GCN-NEXT:   [[S_AND_B64_:%[0-9]+]]:sreg_64 = S_AND_B64 [[COPY]], undef %1:sreg_64, implicit-def dead $scc
  ; GCN-NEXT:   dead %0:sreg_64 = S_XOR_B64 [[S_AND_B64_]], [[COPY]], implicit-def dead $scc
  ; GCN-NEXT:   $exec = S_MOV_B64_term [[S_AND_B64_]]
  ; GCN-NEXT:   S_CBRANCH_EXECZ %bb.2, implicit $exec
  ; GCN-NEXT:   S_BRANCH %bb.1
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.1:
  ; GCN-NEXT:   successors: %bb.2(0x80000000)
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.2:
  ; GCN-NEXT:   S_ENDPGM 0
  bb.0:
    successors: %bb.1, %bb.2

    %1:sreg_64 = SI_IF undef %0:sreg_64, %bb.2, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
    S_BRANCH %bb.1

  bb.1:
    successors: %bb.2

  bb.2:
    S_ENDPGM 0

...

# We need to split the block for SI_END_CF, but
---
name: end_cf_split_block_end
tracksRegLiveness: true
body:             |
  ; GCN-LABEL: name: end_cf_split_block_end
  ; GCN: bb.0:
  ; GCN-NEXT:   successors: %bb.1(0x40000000), %bb.2(0x40000000)
  ; GCN-NEXT:   liveins: $vgpr0, $vgpr1, $sgpr30_sgpr31
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
  ; GCN-NEXT:   [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr1
  ; GCN-NEXT:   [[V_CMP_EQ_U32_e64_:%[0-9]+]]:sreg_64_xexec = V_CMP_EQ_U32_e64 [[COPY]], [[COPY1]], implicit $exec
  ; GCN-NEXT:   [[COPY2:%[0-9]+]]:sreg_64 = COPY $exec, implicit-def $exec
  ; GCN-NEXT:   [[S_AND_B64_:%[0-9]+]]:sreg_64 = S_AND_B64 [[COPY2]], [[V_CMP_EQ_U32_e64_]], implicit-def dead $scc
  ; GCN-NEXT:   [[S_XOR_B64_:%[0-9]+]]:sreg_64_xexec = S_XOR_B64 [[S_AND_B64_]], [[COPY2]], implicit-def dead $scc
  ; GCN-NEXT:   $exec = S_MOV_B64_term [[S_AND_B64_]]
  ; GCN-NEXT:   [[S_MOV_B64_term:%[0-9]+]]:sreg_64_xexec = S_MOV_B64_term [[S_XOR_B64_]], implicit $exec
  ; GCN-NEXT:   S_CBRANCH_EXECZ %bb.1, implicit $exec
  ; GCN-NEXT:   S_BRANCH %bb.2
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.1:
  ; GCN-NEXT:   successors: %bb.2(0x80000000)
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   [[COPY3:%[0-9]+]]:sreg_64_xexec = COPY [[S_MOV_B64_term]]
  ; GCN-NEXT:   $exec = S_OR_B64_term $exec, [[COPY3]], implicit-def $scc
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.2:
  ; GCN-NEXT:   S_ENDPGM 0
  bb.0:
    liveins: $vgpr0, $vgpr1, $sgpr30_sgpr31

    %0:vgpr_32 = COPY killed $vgpr0
    %1:vgpr_32 = COPY killed $vgpr1
    %3:sreg_64_xexec = V_CMP_EQ_U32_e64 killed %0, killed %1, implicit $exec
    %4:sreg_64_xexec = SI_IF %3, %bb.1, implicit-def $exec, implicit-def dead $scc, implicit $exec
    %5:sreg_64_xexec = S_MOV_B64_term %4, implicit $exec
    S_BRANCH %bb.2

  bb.1:
    successors: %bb.2

    %6:sreg_64_xexec = COPY %5
    SI_END_CF killed %6, implicit-def $exec, implicit-def dead $scc, implicit $exec

  bb.2:
    S_ENDPGM 0

...

---
name: end_cf_split_block_physreg_livein
tracksRegLiveness: true
body:             |
  ; GCN-LABEL: name: end_cf_split_block_physreg_livein
  ; GCN: bb.0:
  ; GCN-NEXT:   successors: %bb.1(0x40000000), %bb.2(0x40000000)
  ; GCN-NEXT:   liveins: $vgpr0, $vgpr1, $sgpr30_sgpr31, $sgpr4_sgpr5
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
  ; GCN-NEXT:   [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr1
  ; GCN-NEXT:   [[V_CMP_EQ_U32_e64_:%[0-9]+]]:sreg_64_xexec = V_CMP_EQ_U32_e64 [[COPY]], [[COPY1]], implicit $exec
  ; GCN-NEXT:   [[COPY2:%[0-9]+]]:sreg_64 = COPY $exec, implicit-def $exec
  ; GCN-NEXT:   [[S_AND_B64_:%[0-9]+]]:sreg_64 = S_AND_B64 [[COPY2]], [[V_CMP_EQ_U32_e64_]], implicit-def dead $scc
  ; GCN-NEXT:   [[S_XOR_B64_:%[0-9]+]]:sreg_64_xexec = S_XOR_B64 [[S_AND_B64_]], [[COPY2]], implicit-def dead $scc
  ; GCN-NEXT:   $exec = S_MOV_B64_term [[S_AND_B64_]]
  ; GCN-NEXT:   [[S_MOV_B64_term:%[0-9]+]]:sreg_64_xexec = S_MOV_B64_term [[S_XOR_B64_]], implicit $exec
  ; GCN-NEXT:   S_CBRANCH_EXECZ %bb.1, implicit $exec
  ; GCN-NEXT:   S_BRANCH %bb.2
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.1:
  ; GCN-NEXT:   successors: %bb.3(0x80000000)
  ; GCN-NEXT:   liveins: $vgpr0, $sgpr4_sgpr5
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   [[COPY3:%[0-9]+]]:sreg_64_xexec = COPY [[S_MOV_B64_term]]
  ; GCN-NEXT:   S_NOP 0
  ; GCN-NEXT:   $exec = S_OR_B64_term $exec, [[COPY3]], implicit-def $scc
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.3:
  ; GCN-NEXT:   successors: %bb.2(0x80000000)
  ; GCN-NEXT:   liveins: $vgpr0, $sgpr4_sgpr5
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   S_SLEEP 3
  ; GCN-NEXT:   S_NOP 0, implicit $vgpr0, implicit $sgpr4_sgpr5
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.2:
  ; GCN-NEXT:   S_ENDPGM 0
  bb.0:
    liveins: $vgpr0, $vgpr1, $sgpr30_sgpr31, $sgpr4_sgpr5

    %0:vgpr_32 = COPY killed $vgpr0
    %1:vgpr_32 = COPY killed $vgpr1
    %3:sreg_64_xexec = V_CMP_EQ_U32_e64 killed %0, killed %1, implicit $exec
    %4:sreg_64_xexec = SI_IF %3, %bb.1, implicit-def $exec, implicit-def dead $scc, implicit $exec
    %5:sreg_64_xexec = S_MOV_B64_term %4, implicit $exec
    S_BRANCH %bb.2

  bb.1:
    successors: %bb.2
    liveins: $vgpr0, $sgpr4_sgpr5

    %6:sreg_64_xexec = COPY %5
    S_NOP 0
    SI_END_CF killed %6, implicit-def $exec, implicit-def dead $scc, implicit $exec
    S_SLEEP 3
    S_NOP 0, implicit $vgpr0, implicit $sgpr4_sgpr5

  bb.2:
    S_ENDPGM 0

...

---
name: end_cf_split_block_physreg_livein_liveout
tracksRegLiveness: true
body:             |
  ; GCN-LABEL: name: end_cf_split_block_physreg_livein_liveout
  ; GCN: bb.0:
  ; GCN-NEXT:   successors: %bb.1(0x40000000), %bb.2(0x40000000)
  ; GCN-NEXT:   liveins: $vgpr0, $vgpr1, $sgpr30_sgpr31, $sgpr4_sgpr5, $sgpr8_sgpr9_sgpr10_sgpr11:0x0000000000000003
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
  ; GCN-NEXT:   [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr1
  ; GCN-NEXT:   [[V_CMP_EQ_U32_e64_:%[0-9]+]]:sreg_64_xexec = V_CMP_EQ_U32_e64 [[COPY]], [[COPY1]], implicit $exec
  ; GCN-NEXT:   [[COPY2:%[0-9]+]]:sreg_64 = COPY $exec, implicit-def $exec
  ; GCN-NEXT:   [[S_AND_B64_:%[0-9]+]]:sreg_64 = S_AND_B64 [[COPY2]], [[V_CMP_EQ_U32_e64_]], implicit-def dead $scc
  ; GCN-NEXT:   [[S_XOR_B64_:%[0-9]+]]:sreg_64_xexec = S_XOR_B64 [[S_AND_B64_]], [[COPY2]], implicit-def dead $scc
  ; GCN-NEXT:   $exec = S_MOV_B64_term [[S_AND_B64_]]
  ; GCN-NEXT:   [[S_MOV_B64_term:%[0-9]+]]:sreg_64_xexec = S_MOV_B64_term [[S_XOR_B64_]], implicit $exec
  ; GCN-NEXT:   S_CBRANCH_EXECZ %bb.1, implicit $exec
  ; GCN-NEXT:   S_BRANCH %bb.2
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.1:
  ; GCN-NEXT:   successors: %bb.3(0x80000000)
  ; GCN-NEXT:   liveins: $vgpr0, $sgpr4_sgpr5, $sgpr8_sgpr9_sgpr10_sgpr11:0x0000000000000003
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   [[COPY3:%[0-9]+]]:sreg_64_xexec = COPY [[S_MOV_B64_term]]
  ; GCN-NEXT:   $exec = S_OR_B64_term $exec, [[COPY3]], implicit-def $scc
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.3:
  ; GCN-NEXT:   successors: %bb.2(0x80000000)
  ; GCN-NEXT:   liveins: $vgpr0, $sgpr4_sgpr5, $sgpr8_sgpr9
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   S_SLEEP 3
  ; GCN-NEXT:   S_NOP 0
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.2:
  ; GCN-NEXT:   liveins: $vgpr0, $sgpr4_sgpr5, $sgpr8_sgpr9_sgpr10_sgpr11:0x0000000000000003
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   S_ENDPGM 0, implicit $vgpr0, implicit $sgpr4_sgpr5, implicit $sgpr8_sgpr9_sgpr10_sgpr11
  bb.0:
    liveins: $vgpr0, $vgpr1, $sgpr30_sgpr31, $sgpr4_sgpr5, $sgpr8_sgpr9_sgpr10_sgpr11:0x00000003

    %0:vgpr_32 = COPY killed $vgpr0
    %1:vgpr_32 = COPY killed $vgpr1
    %3:sreg_64_xexec = V_CMP_EQ_U32_e64 killed %0, killed %1, implicit $exec
    %4:sreg_64_xexec = SI_IF %3, %bb.1, implicit-def $exec, implicit-def dead $scc, implicit $exec
    %5:sreg_64_xexec = S_MOV_B64_term %4, implicit $exec
    S_BRANCH %bb.2

  bb.1:
    successors: %bb.2
    liveins: $vgpr0, $sgpr4_sgpr5, $sgpr8_sgpr9_sgpr10_sgpr11:0x00000003

    %6:sreg_64_xexec = COPY %5
    SI_END_CF killed %6, implicit-def $exec, implicit-def dead $scc, implicit $exec
    S_SLEEP 3
    S_NOP 0

  bb.2:
    liveins: $vgpr0, $sgpr4_sgpr5, $sgpr8_sgpr9_sgpr10_sgpr11:0x00000003
    S_ENDPGM 0, implicit $vgpr0, implicit $sgpr4_sgpr5, implicit $sgpr8_sgpr9_sgpr10_sgpr11

...

---
name: end_cf_split_block_physreg_liveout
tracksRegLiveness: true
body:             |
  ; GCN-LABEL: name: end_cf_split_block_physreg_liveout
  ; GCN: bb.0:
  ; GCN-NEXT:   successors: %bb.1(0x40000000), %bb.2(0x40000000)
  ; GCN-NEXT:   liveins: $vgpr0, $vgpr1, $sgpr30_sgpr31
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
  ; GCN-NEXT:   [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr1
  ; GCN-NEXT:   [[V_CMP_EQ_U32_e64_:%[0-9]+]]:sreg_64_xexec = V_CMP_EQ_U32_e64 [[COPY]], [[COPY1]], implicit $exec
  ; GCN-NEXT:   [[COPY2:%[0-9]+]]:sreg_64 = COPY $exec, implicit-def $exec
  ; GCN-NEXT:   [[S_AND_B64_:%[0-9]+]]:sreg_64 = S_AND_B64 [[COPY2]], [[V_CMP_EQ_U32_e64_]], implicit-def dead $scc
  ; GCN-NEXT:   [[S_XOR_B64_:%[0-9]+]]:sreg_64_xexec = S_XOR_B64 [[S_AND_B64_]], [[COPY2]], implicit-def dead $scc
  ; GCN-NEXT:   $exec = S_MOV_B64_term [[S_AND_B64_]]
  ; GCN-NEXT:   [[S_MOV_B64_term:%[0-9]+]]:sreg_64_xexec = S_MOV_B64_term [[S_XOR_B64_]], implicit $exec
  ; GCN-NEXT:   S_CBRANCH_EXECZ %bb.1, implicit $exec
  ; GCN-NEXT:   S_BRANCH %bb.2
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.1:
  ; GCN-NEXT:   successors: %bb.3(0x80000000)
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   [[COPY3:%[0-9]+]]:sreg_64_xexec = COPY [[S_MOV_B64_term]]
  ; GCN-NEXT:   $exec = S_OR_B64_term $exec, [[COPY3]], implicit-def $scc
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.3:
  ; GCN-NEXT:   successors: %bb.2(0x80000000)
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   $vgpr3 = V_MOV_B32_e32 0, implicit $exec
  ; GCN-NEXT:   $sgpr4_sgpr5 = S_MOV_B64 32
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.2:
  ; GCN-NEXT:   liveins: $vgpr3, $sgpr4_sgpr5
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   S_ENDPGM 0, implicit $vgpr3, implicit $sgpr4_sgpr5
  bb.0:
    liveins: $vgpr0, $vgpr1, $sgpr30_sgpr31

    %0:vgpr_32 = COPY killed $vgpr0
    %1:vgpr_32 = COPY killed $vgpr1
    %3:sreg_64_xexec = V_CMP_EQ_U32_e64 killed %0, killed %1, implicit $exec
    %4:sreg_64_xexec = SI_IF %3, %bb.1, implicit-def $exec, implicit-def dead $scc, implicit $exec
    %5:sreg_64_xexec = S_MOV_B64_term %4, implicit $exec
    S_BRANCH %bb.2

  bb.1:
    successors: %bb.2

    %6:sreg_64_xexec = COPY %5
    SI_END_CF killed %6, implicit-def $exec, implicit-def dead $scc, implicit $exec
    $vgpr3 = V_MOV_B32_e32 0, implicit $exec
    $sgpr4_sgpr5 = S_MOV_B64 32

  bb.2:
    liveins: $vgpr3, $sgpr4_sgpr5
    S_ENDPGM 0, implicit $vgpr3, implicit $sgpr4_sgpr5

...

---
name: end_cf_split_block_physreg_live_across_split
tracksRegLiveness: true
body:             |
  ; GCN-LABEL: name: end_cf_split_block_physreg_live_across_split
  ; GCN: bb.0:
  ; GCN-NEXT:   successors: %bb.1(0x40000000), %bb.2(0x40000000)
  ; GCN-NEXT:   liveins: $vgpr0, $vgpr1, $sgpr30_sgpr31, $sgpr4_sgpr5
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
  ; GCN-NEXT:   [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr1
  ; GCN-NEXT:   [[V_CMP_EQ_U32_e64_:%[0-9]+]]:sreg_64_xexec = V_CMP_EQ_U32_e64 [[COPY]], [[COPY1]], implicit $exec
  ; GCN-NEXT:   [[COPY2:%[0-9]+]]:sreg_64 = COPY $exec, implicit-def $exec
  ; GCN-NEXT:   [[S_AND_B64_:%[0-9]+]]:sreg_64 = S_AND_B64 [[COPY2]], [[V_CMP_EQ_U32_e64_]], implicit-def dead $scc
  ; GCN-NEXT:   [[S_XOR_B64_:%[0-9]+]]:sreg_64_xexec = S_XOR_B64 [[S_AND_B64_]], [[COPY2]], implicit-def dead $scc
  ; GCN-NEXT:   $exec = S_MOV_B64_term [[S_AND_B64_]]
  ; GCN-NEXT:   [[S_MOV_B64_term:%[0-9]+]]:sreg_64_xexec = S_MOV_B64_term [[S_XOR_B64_]], implicit $exec
  ; GCN-NEXT:   S_CBRANCH_EXECZ %bb.1, implicit $exec
  ; GCN-NEXT:   S_BRANCH %bb.2
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.1:
  ; GCN-NEXT:   successors: %bb.3(0x80000000)
  ; GCN-NEXT:   liveins: $vgpr0, $sgpr4_sgpr5
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   [[COPY3:%[0-9]+]]:sreg_64_xexec = COPY [[S_MOV_B64_term]]
  ; GCN-NEXT:   $sgpr4_sgpr5 = S_MOV_B64 32
  ; GCN-NEXT:   $exec = S_OR_B64_term $exec, [[COPY3]], implicit-def $scc
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.3:
  ; GCN-NEXT:   successors: %bb.2(0x80000000)
  ; GCN-NEXT:   liveins: $vgpr0, $sgpr4_sgpr5
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   S_SLEEP 3, implicit $sgpr4_sgpr5
  ; GCN-NEXT:   S_NOP 0
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.2:
  ; GCN-NEXT:   liveins: $vgpr0, $sgpr4_sgpr5
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   S_ENDPGM 0, implicit $vgpr0, implicit $sgpr4_sgpr5
  bb.0:
    liveins: $vgpr0, $vgpr1, $sgpr30_sgpr31, $sgpr4_sgpr5

    %0:vgpr_32 = COPY killed $vgpr0
    %1:vgpr_32 = COPY killed $vgpr1
    %3:sreg_64_xexec = V_CMP_EQ_U32_e64 killed %0, killed %1, implicit $exec
    %4:sreg_64_xexec = SI_IF %3, %bb.1, implicit-def $exec, implicit-def dead $scc, implicit $exec
    %5:sreg_64_xexec = S_MOV_B64_term %4, implicit $exec
    S_BRANCH %bb.2

  bb.1:
    successors: %bb.2
    liveins: $vgpr0, $sgpr4_sgpr5

    %6:sreg_64_xexec = COPY %5
    $sgpr4_sgpr5 = S_MOV_B64 32
    SI_END_CF killed %6, implicit-def $exec, implicit-def dead $scc, implicit $exec
    S_SLEEP 3, implicit $sgpr4_sgpr5
    S_NOP 0

  bb.2:
    liveins: $vgpr0, $sgpr4_sgpr5
    S_ENDPGM 0, implicit $vgpr0, implicit $sgpr4_sgpr5

...

---
name: end_cf_split_block_process_next_inst
tracksRegLiveness: true
body:             |
  ; GCN-LABEL: name: end_cf_split_block_process_next_inst
  ; GCN: bb.0:
  ; GCN-NEXT:   successors: %bb.1(0x80000000)
  ; GCN-NEXT:   liveins: $vgpr0, $vgpr1, $vgpr2
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
  ; GCN-NEXT:   [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr1
  ; GCN-NEXT:   [[COPY2:%[0-9]+]]:vgpr_32 = COPY $vgpr2
  ; GCN-NEXT:   [[V_CMP_EQ_U32_e64_:%[0-9]+]]:sreg_64_xexec = V_CMP_EQ_U32_e64 [[COPY]], [[COPY1]], implicit $exec
  ; GCN-NEXT:   [[V_CMP_EQ_U32_e64_1:%[0-9]+]]:sreg_64_xexec = V_CMP_EQ_U32_e64 [[COPY]], [[COPY2]], implicit $exec
  ; GCN-NEXT:   dead %5:sreg_64_xexec = S_MOV_B64 0
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.1:
  ; GCN-NEXT:   successors: %bb.3(0x80000000)
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   [[COPY3:%[0-9]+]]:sreg_64_xexec = COPY [[V_CMP_EQ_U32_e64_]]
  ; GCN-NEXT:   $exec = S_OR_B64_term $exec, [[COPY3]], implicit-def $scc
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.3:
  ; GCN-NEXT:   successors: %bb.2(0x80000000)
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   [[COPY4:%[0-9]+]]:sreg_64 = COPY $exec, implicit-def $exec
  ; GCN-NEXT:   [[S_AND_B64_:%[0-9]+]]:sreg_64 = S_AND_B64 [[COPY4]], [[V_CMP_EQ_U32_e64_1]], implicit-def dead $scc
  ; GCN-NEXT:   [[S_XOR_B64_:%[0-9]+]]:sreg_64_xexec = S_XOR_B64 [[S_AND_B64_]], [[COPY4]], implicit-def dead $scc
  ; GCN-NEXT:   $exec = S_MOV_B64_term [[S_AND_B64_]]
  ; GCN-NEXT:   dead %8:sreg_64_xexec = S_MOV_B64_term [[S_XOR_B64_]], implicit $exec
  ; GCN-NEXT:   S_CBRANCH_EXECZ %bb.2, implicit $exec
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.2:
  ; GCN-NEXT:   S_ENDPGM 0
  bb.0:
    liveins: $vgpr0, $vgpr1, $vgpr2

    %0:vgpr_32 = COPY killed $vgpr0
    %1:vgpr_32 = COPY killed $vgpr1
    %2:vgpr_32 = COPY killed $vgpr2
    %3:sreg_64_xexec = V_CMP_EQ_U32_e64 %0, killed %1, implicit $exec
    %4:sreg_64_xexec = V_CMP_EQ_U32_e64 killed %0, killed %2, implicit $exec
    %5:sreg_64_xexec = S_MOV_B64 0

  bb.1:
    successors: %bb.2

    %6:sreg_64_xexec = COPY %3
    SI_END_CF killed %6, implicit-def $exec, implicit-def dead $scc, implicit $exec
    %7:sreg_64_xexec = SI_IF %4, %bb.2, implicit-def $exec, implicit-def dead $scc, implicit $exec
    %8:sreg_64_xexec = S_MOV_B64_term %7, implicit $exec

  bb.2:
    S_ENDPGM 0

...