# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 3
# RUN: llc -mtriple=amdgcn -mcpu=gfx1100 -mattr=+real-true16 -run-pass=si-fix-sgpr-copies -verify-machineinstrs -o - %s | FileCheck --check-prefixes=GCN %s

---
name:            cmp_f16
body:             |
  bb.0.entry:
    ; GCN-LABEL: name: cmp_f16
    ; GCN: [[DEF:%[0-9]+]]:vgpr_16 = IMPLICIT_DEF
    ; GCN-NEXT: [[DEF1:%[0-9]+]]:sreg_32 = IMPLICIT_DEF
    ; GCN-NEXT: [[V_CVT_F16_U16_t16_e64_:%[0-9]+]]:vgpr_16 = V_CVT_F16_U16_t16_e64 0, [[DEF]], 0, 0, 0, implicit $mode, implicit $exec
    ; GCN-NEXT: [[DEF2:%[0-9]+]]:vgpr_16 = IMPLICIT_DEF
    ; GCN-NEXT: [[REG_SEQUENCE:%[0-9]+]]:vgpr_32 = REG_SEQUENCE [[V_CVT_F16_U16_t16_e64_]], %subreg.lo16, [[DEF2]], %subreg.hi16
    ; GCN-NEXT: [[V_CMP_LT_F16_t16_e64_:%[0-9]+]]:sreg_32_xm0_xexec = nofpexcept V_CMP_LT_F16_t16_e64 0, killed [[REG_SEQUENCE]].lo16, 0, [[DEF1]], 0, 0, implicit $mode, implicit $exec
    ; GCN-NEXT: [[V_CNDMASK_B32_e64_:%[0-9]+]]:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, -1, killed [[V_CMP_LT_F16_t16_e64_]], implicit $exec
    %0:vgpr_16 = IMPLICIT_DEF
    %1:sreg_32 = IMPLICIT_DEF
    %2:vgpr_16 = V_CVT_F16_U16_t16_e64 0, %0:vgpr_16, 0, 0, 0, implicit $mode, implicit $exec
    %3:sreg_32 = COPY %2:vgpr_16
    nofpexcept S_CMP_LT_F16 killed %3:sreg_32, %1:sreg_32, implicit-def $scc, implicit $mode
    %4:sreg_32_xm0_xexec = COPY $scc
    %5:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, -1, killed %4, implicit $exec
...

---
name:            cvt_hi_f32_f16
body:             |
  bb.0:
    ; GCN-LABEL: name: cvt_hi_f32_f16
    ; GCN: [[DEF:%[0-9]+]]:vgpr_16 = IMPLICIT_DEF
    ; GCN-NEXT: [[V_CVT_F16_U16_t16_e64_:%[0-9]+]]:vgpr_16 = V_CVT_F16_U16_t16_e64 0, [[DEF]], 0, 0, 0, implicit $mode, implicit $exec
    ; GCN-NEXT: [[DEF1:%[0-9]+]]:vgpr_16 = IMPLICIT_DEF
    ; GCN-NEXT: [[REG_SEQUENCE:%[0-9]+]]:vgpr_32 = REG_SEQUENCE [[V_CVT_F16_U16_t16_e64_]], %subreg.lo16, [[DEF1]], %subreg.hi16
    ; GCN-NEXT: [[COPY:%[0-9]+]]:vgpr_32 = COPY [[REG_SEQUENCE]]
    ; GCN-NEXT: [[V_CVT_F32_F16_t16_e64_:%[0-9]+]]:vgpr_32 = V_CVT_F32_F16_t16_e64 0, [[COPY]].hi16, 0, 0, 0, implicit $mode, implicit $exec
    %0:vgpr_16 = IMPLICIT_DEF
    %1:vgpr_16 = V_CVT_F16_U16_t16_e64 0, %0:vgpr_16, 0, 0, 0, implicit $mode, implicit $exec
    %2:sreg_32 = COPY %1:vgpr_16
    %3:sreg_32 = S_CVT_HI_F32_F16 %2:sreg_32, implicit $mode
...

---
name:            s_or_b32
body:             |
  bb.0:
    ; GCN-LABEL: name: s_or_b32
    ; GCN: [[DEF:%[0-9]+]]:vgpr_16 = IMPLICIT_DEF
    ; GCN-NEXT: [[V_CVT_F16_U16_t16_e64_:%[0-9]+]]:vgpr_16 = V_CVT_F16_U16_t16_e64 0, [[DEF]], 0, 0, 0, implicit $mode, implicit $exec
    ; GCN-NEXT: [[DEF1:%[0-9]+]]:vgpr_16 = IMPLICIT_DEF
    ; GCN-NEXT: [[REG_SEQUENCE:%[0-9]+]]:vgpr_32 = REG_SEQUENCE [[V_CVT_F16_U16_t16_e64_]], %subreg.lo16, [[DEF1]], %subreg.hi16
    ; GCN-NEXT: [[V_OR_B32_e64_:%[0-9]+]]:vgpr_32 = V_OR_B32_e64 [[REG_SEQUENCE]], [[REG_SEQUENCE]], implicit $exec
    ; GCN-NEXT: [[V_CVT_F16_U16_t16_e64_1:%[0-9]+]]:vgpr_16 = V_CVT_F16_U16_t16_e64 0, [[V_OR_B32_e64_]].lo16, 0, 0, 0, implicit $mode, implicit $exec
    %0:vgpr_16 = IMPLICIT_DEF
    %1:vgpr_16 = V_CVT_F16_U16_t16_e64 0, %0:vgpr_16, 0, 0, 0, implicit $mode, implicit $exec
    %2:sreg_32 = COPY %1:vgpr_16
    %3:sreg_32 = S_OR_B32 %2:sreg_32, %2:sreg_32, implicit-def $scc
    %4:vgpr_16 = V_CVT_F16_U16_t16_e64 0, %3:sreg_32, 0, 0, 0, implicit $mode, implicit $exec
...

---
name:            salu16_usedby_salu32
body:             |
  bb.0:
    ; GCN-LABEL: name: salu16_usedby_salu32
    ; GCN: [[DEF:%[0-9]+]]:vgpr_32 = IMPLICIT_DEF
    ; GCN-NEXT: [[DEF1:%[0-9]+]]:sreg_32 = IMPLICIT_DEF
    ; GCN-NEXT: [[V_TRUNC_F16_t16_e64_:%[0-9]+]]:vgpr_16 = V_TRUNC_F16_t16_e64 0, [[DEF]].lo16, 0, 0, 0, implicit $mode, implicit $exec
    ; GCN-NEXT: [[DEF2:%[0-9]+]]:vgpr_16 = IMPLICIT_DEF
    ; GCN-NEXT: [[REG_SEQUENCE:%[0-9]+]]:vgpr_32 = REG_SEQUENCE [[V_TRUNC_F16_t16_e64_]], %subreg.lo16, [[DEF2]], %subreg.hi16
    ; GCN-NEXT: [[V_XOR_B32_e64_:%[0-9]+]]:vgpr_32 = V_XOR_B32_e64 [[REG_SEQUENCE]], [[DEF]], implicit $exec
    %0:vgpr_32 = IMPLICIT_DEF
    %1:sreg_32 = COPY %0:vgpr_32
    %2:sreg_32 = S_TRUNC_F16 %1:sreg_32, implicit $mode
    %3:sreg_32 = S_XOR_B32 %2:sreg_32, %1:sreg_32, implicit-def $scc
...

---
name:            salu16_usedby_valu32
body:             |
  bb.0:
    ; GCN-LABEL: name: salu16_usedby_valu32
    ; GCN: [[DEF:%[0-9]+]]:vgpr_32 = IMPLICIT_DEF
    ; GCN-NEXT: [[DEF1:%[0-9]+]]:sreg_32 = IMPLICIT_DEF
    ; GCN-NEXT: [[V_TRUNC_F16_t16_e64_:%[0-9]+]]:vgpr_16 = V_TRUNC_F16_t16_e64 0, [[DEF]].lo16, 0, 0, 0, implicit $mode, implicit $exec
    ; GCN-NEXT: [[DEF2:%[0-9]+]]:vgpr_16 = IMPLICIT_DEF
    ; GCN-NEXT: [[REG_SEQUENCE:%[0-9]+]]:vgpr_32 = REG_SEQUENCE [[V_TRUNC_F16_t16_e64_]], %subreg.lo16, [[DEF2]], %subreg.hi16
    ; GCN-NEXT: [[V_XOR_B32_e64_:%[0-9]+]]:vgpr_32 = V_XOR_B32_e64 [[REG_SEQUENCE]], [[DEF]], implicit-def $scc, implicit $exec
    %0:vgpr_32 = IMPLICIT_DEF
    %1:sreg_32 = COPY %0:vgpr_32
    %2:sreg_32 = S_TRUNC_F16 %1:sreg_32, implicit $mode
    %3:vgpr_32 = V_XOR_B32_e64 %2:sreg_32, %1:sreg_32, implicit-def $scc, implicit $exec
...

---
name:            salu32_usedby_salu16
body:             |
  bb.0:
    ; GCN-LABEL: name: salu32_usedby_salu16
    ; GCN: [[DEF:%[0-9]+]]:vgpr_32 = IMPLICIT_DEF
    ; GCN-NEXT: [[DEF1:%[0-9]+]]:sreg_32 = IMPLICIT_DEF
    ; GCN-NEXT: [[V_XOR_B32_e64_:%[0-9]+]]:vgpr_32 = V_XOR_B32_e64 [[DEF]], [[DEF]], implicit $exec
    ; GCN-NEXT: [[V_TRUNC_F16_t16_e64_:%[0-9]+]]:vgpr_16 = V_TRUNC_F16_t16_e64 0, [[V_XOR_B32_e64_]].lo16, 0, 0, 0, implicit $mode, implicit $exec
    %0:vgpr_32 = IMPLICIT_DEF
    %1:sreg_32 = COPY %0:vgpr_32
    %2:sreg_32 = S_XOR_B32 %1:sreg_32, %1:sreg_32, implicit-def $scc
    %3:sreg_32 = S_TRUNC_F16 %2:sreg_32, implicit $mode
...

---
name:            salu32_usedby_valu16
body:             |
  bb.0:
    ; GCN-LABEL: name: salu32_usedby_valu16
    ; GCN: [[DEF:%[0-9]+]]:vgpr_32 = IMPLICIT_DEF
    ; GCN-NEXT: [[DEF1:%[0-9]+]]:sreg_32 = IMPLICIT_DEF
    ; GCN-NEXT: [[V_XOR_B32_e64_:%[0-9]+]]:vgpr_32 = V_XOR_B32_e64 [[DEF]], [[DEF]], implicit $exec
    ; GCN-NEXT: [[V_TRUNC_F16_t16_e64_:%[0-9]+]]:vgpr_16 = V_TRUNC_F16_t16_e64 0, [[V_XOR_B32_e64_]].lo16, 0, 0, 0, implicit $mode, implicit $exec
    %0:vgpr_32 = IMPLICIT_DEF
    %1:sreg_32 = COPY %0:vgpr_32
    %2:sreg_32 = S_XOR_B32 %1:sreg_32, %1:sreg_32, implicit-def $scc
    %3:vgpr_16 = V_TRUNC_F16_t16_e64 0, %2:sreg_32, 0, 0, 0, implicit $mode, implicit $exec
...

---
name:            copy_vgpr16_sreg32_usedby_salu16
body:             |
  bb.0:
    ; GCN-LABEL: name: copy_vgpr16_sreg32_usedby_salu16
    ; GCN: [[DEF:%[0-9]+]]:vgpr_16 = IMPLICIT_DEF
    ; GCN-NEXT: [[DEF1:%[0-9]+]]:vgpr_16 = IMPLICIT_DEF
    ; GCN-NEXT: [[REG_SEQUENCE:%[0-9]+]]:vgpr_32 = REG_SEQUENCE [[DEF]], %subreg.lo16, [[DEF1]], %subreg.hi16
    ; GCN-NEXT: [[V_TRUNC_F16_t16_e64_:%[0-9]+]]:vgpr_16 = V_TRUNC_F16_t16_e64 0, [[REG_SEQUENCE]].lo16, 0, 0, 0, implicit $mode, implicit $exec
    %0:vgpr_16 = IMPLICIT_DEF
    %1:sreg_32 = COPY %0:vgpr_16
    %2:sreg_32 = S_TRUNC_F16 %1:sreg_32, implicit $mode
...

---
name:            copy_vgpr16_sreg32_usedby_salu32
body:             |
  bb.0:
    ; GCN-LABEL: name: copy_vgpr16_sreg32_usedby_salu32
    ; GCN: [[DEF:%[0-9]+]]:vgpr_16 = IMPLICIT_DEF
    ; GCN-NEXT: [[DEF1:%[0-9]+]]:vgpr_16 = IMPLICIT_DEF
    ; GCN-NEXT: [[REG_SEQUENCE:%[0-9]+]]:vgpr_32 = REG_SEQUENCE [[DEF]], %subreg.lo16, [[DEF1]], %subreg.hi16
    ; GCN-NEXT: [[V_XOR_B32_e64_:%[0-9]+]]:vgpr_32 = V_XOR_B32_e64 [[REG_SEQUENCE]], [[REG_SEQUENCE]], implicit $exec
    %0:vgpr_16 = IMPLICIT_DEF
    %1:sreg_32 = COPY %0:vgpr_16
    %2:sreg_32 = S_XOR_B32 %1:sreg_32, %1:sreg_32, implicit-def $scc
...

---
name:            copy_vgpr32_sreg32_usedby_valu16
body:             |
  bb.0:
    ; GCN-LABEL: name: copy_vgpr32_sreg32_usedby_valu16
    ; GCN: [[DEF:%[0-9]+]]:vgpr_32 = IMPLICIT_DEF
    ; GCN-NEXT: [[DEF1:%[0-9]+]]:sreg_32 = IMPLICIT_DEF
    ; GCN-NEXT: [[V_TRUNC_F16_t16_e64_:%[0-9]+]]:vgpr_16 = V_TRUNC_F16_t16_e64 0, [[DEF]].lo16, 0, 0, 0, implicit $mode, implicit $exec
    %0:vgpr_32 = IMPLICIT_DEF
    %1:sreg_32 = COPY %0:vgpr_32
    %2:vgpr_16 = V_TRUNC_F16_t16_e64 0, %1:sreg_32, 0, 0, 0, implicit $mode, implicit $exec
...

---
name:            S_FMAC_F16
body:             |
  bb.0:
    ; GCN-LABEL: name: S_FMAC_F16
    ; GCN: [[DEF:%[0-9]+]]:vgpr_16 = IMPLICIT_DEF
    ; GCN-NEXT: [[DEF1:%[0-9]+]]:sgpr_lo16 = IMPLICIT_DEF
    ; GCN-NEXT: [[DEF2:%[0-9]+]]:vgpr_16 = IMPLICIT_DEF
    ; GCN-NEXT: [[REG_SEQUENCE:%[0-9]+]]:vgpr_32 = REG_SEQUENCE [[DEF]], %subreg.lo16, [[DEF2]], %subreg.hi16
    ; GCN-NEXT: [[DEF3:%[0-9]+]]:vgpr_16 = IMPLICIT_DEF
    ; GCN-NEXT: [[REG_SEQUENCE1:%[0-9]+]]:vgpr_32 = REG_SEQUENCE [[DEF]], %subreg.lo16, [[DEF3]], %subreg.hi16
    ; GCN-NEXT: [[V_FMAC_F16_t16_e64_:%[0-9]+]]:vgpr_16 = V_FMAC_F16_t16_e64 0, [[REG_SEQUENCE1]].lo16, 0, [[REG_SEQUENCE1]].lo16, 0, [[REG_SEQUENCE]].lo16, 0, 0, 0, implicit $mode, implicit $exec
    %0:vgpr_16 = IMPLICIT_DEF
    %1:sgpr_lo16 = COPY %0:vgpr_16
    %2:sreg_32 = COPY %0:vgpr_16
    %3:sreg_32 = COPY %1:sgpr_lo16
    %4:sreg_32 = S_FMAC_F16 %3:sreg_32, %3:sreg_32, %2:sreg_32, implicit $mode
...

---
name:            legalize_with_multi_user
body:             |
  bb.0:
    ; GCN-LABEL: name: legalize_with_multi_user
    ; GCN: [[DEF:%[0-9]+]]:vgpr_16 = IMPLICIT_DEF
    ; GCN-NEXT: [[DEF1:%[0-9]+]]:vgpr_16 = IMPLICIT_DEF
    ; GCN-NEXT: [[REG_SEQUENCE:%[0-9]+]]:vgpr_32 = REG_SEQUENCE [[DEF]], %subreg.lo16, [[DEF1]], %subreg.hi16
    ; GCN-NEXT: [[V_ADD_F16_t16_e64_:%[0-9]+]]:vgpr_16 = V_ADD_F16_t16_e64 0, [[REG_SEQUENCE]].lo16, 0, 1, 0, 0, 0, implicit $mode, implicit $exec
    ; GCN-NEXT: [[S_MOV_B32_:%[0-9]+]]:sreg_32 = S_MOV_B32 32768
    ; GCN-NEXT: [[DEF2:%[0-9]+]]:vgpr_32 = IMPLICIT_DEF
    ; GCN-NEXT: [[DEF3:%[0-9]+]]:vgpr_16 = IMPLICIT_DEF
    ; GCN-NEXT: [[REG_SEQUENCE1:%[0-9]+]]:vgpr_32 = REG_SEQUENCE [[V_ADD_F16_t16_e64_]], %subreg.lo16, [[DEF3]], %subreg.hi16
    ; GCN-NEXT: [[V_PK_FMA_F16_:%[0-9]+]]:vgpr_32 = V_PK_FMA_F16 11, [[S_MOV_B32_]], 0, [[REG_SEQUENCE1]], 8, [[DEF2]], 0, 0, 0, 0, 0, implicit $mode, implicit $exec
    ; GCN-NEXT: [[DEF4:%[0-9]+]]:vgpr_16 = IMPLICIT_DEF
    ; GCN-NEXT: [[REG_SEQUENCE2:%[0-9]+]]:vgpr_32 = REG_SEQUENCE [[V_ADD_F16_t16_e64_]], %subreg.lo16, [[DEF4]], %subreg.hi16
    ; GCN-NEXT: [[V_XOR_B32_e64_:%[0-9]+]]:vgpr_32 = V_XOR_B32_e64 [[REG_SEQUENCE2]], [[S_MOV_B32_]], implicit $exec
    %0:vgpr_16 = IMPLICIT_DEF
    %1:sreg_32 = COPY %0:vgpr_16
    %2:sreg_32 = S_ADD_F16 %1:sreg_32, 1, implicit $mode
    %3:sreg_32 = S_MOV_B32 32768
    %4:vgpr_32 = IMPLICIT_DEF
    %5:vgpr_32 = V_PK_FMA_F16 11, %3:sreg_32, 0, %2:sreg_32, 8, %4:vgpr_32, 0, 0, 0, 0, 0, implicit $mode, implicit $exec
    %6:sreg_32 = S_XOR_B32 %2:sreg_32, %3:sreg_32, implicit-def dead $scc
...

---
name:            vgpr16_to_spgr32
body:             |
  ; GCN-LABEL: name: vgpr16_to_spgr32
  ; GCN: bb.0.entry:
  ; GCN-NEXT:   successors: %bb.1(0x40000000), %bb.2(0x40000000)
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT:   [[DEF:%[0-9]+]]:sreg_32 = IMPLICIT_DEF
  ; GCN-NEXT:   [[COPY:%[0-9]+]]:vgpr_32 = COPY [[DEF]]
  ; GCN-NEXT:   [[DS_READ2_B32_gfx9_:%[0-9]+]]:vreg_64 = DS_READ2_B32_gfx9 killed [[COPY]], 0, 1, 0, implicit $exec :: (load (s64) from `ptr addrspace(3) poison` + 8, align 4, addrspace 3)
  ; GCN-NEXT:   [[COPY1:%[0-9]+]]:vgpr_32 = COPY [[DS_READ2_B32_gfx9_]].sub0
  ; GCN-NEXT:   [[V_CVT_F16_F32_t16_e64_:%[0-9]+]]:vgpr_16 = nofpexcept V_CVT_F16_F32_t16_e64 0, killed [[COPY1]], 0, 0, 0, implicit $mode, implicit $exec
  ; GCN-NEXT:   [[S_MOV_B32_:%[0-9]+]]:sreg_32 = S_MOV_B32 65535
  ; GCN-NEXT:   [[DEF1:%[0-9]+]]:vgpr_16 = IMPLICIT_DEF
  ; GCN-NEXT:   [[REG_SEQUENCE:%[0-9]+]]:vgpr_32 = REG_SEQUENCE [[V_CVT_F16_F32_t16_e64_]], %subreg.lo16, [[DEF1]], %subreg.hi16
  ; GCN-NEXT:   [[V_READFIRSTLANE_B32_:%[0-9]+]]:sreg_32_xm0 = V_READFIRSTLANE_B32 [[REG_SEQUENCE]], implicit $exec
  ; GCN-NEXT:   [[S_AND_B32_:%[0-9]+]]:sreg_32 = S_AND_B32 killed [[S_MOV_B32_]], killed [[V_READFIRSTLANE_B32_]], implicit-def dead $scc
  ; GCN-NEXT:   [[S_MOV_B32_1:%[0-9]+]]:sreg_32 = S_MOV_B32 5
  ; GCN-NEXT:   [[S_MUL_I32_:%[0-9]+]]:sreg_32 = S_MUL_I32 killed [[S_AND_B32_]], killed [[S_MOV_B32_1]]
  ; GCN-NEXT:   [[S_MOV_B32_2:%[0-9]+]]:sreg_32 = S_MOV_B32 2
  ; GCN-NEXT:   S_CMP_LG_U32 killed [[S_MUL_I32_]], killed [[S_MOV_B32_2]], implicit-def $scc
  ; GCN-NEXT:   S_CBRANCH_SCC1 %bb.2, implicit $scc
  ; GCN-NEXT:   S_BRANCH %bb.1
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.1:
  ; GCN-NEXT:   [[S_MOV_B32_3:%[0-9]+]]:sreg_32 = S_MOV_B32 1
  ; GCN-NEXT:   [[S_MOV_B32_4:%[0-9]+]]:sreg_32 = S_MOV_B32 killed [[S_MOV_B32_3]]
  ; GCN-NEXT:   $sgpr0 = COPY [[S_MOV_B32_4]]
  ; GCN-NEXT:   SI_RETURN_TO_EPILOG $sgpr0
  ; GCN-NEXT: {{  $}}
  ; GCN-NEXT: bb.2:
  ; GCN-NEXT:   [[S_MOV_B32_5:%[0-9]+]]:sreg_32 = S_MOV_B32 2
  ; GCN-NEXT:   [[S_MOV_B32_6:%[0-9]+]]:sreg_32 = S_MOV_B32 killed [[S_MOV_B32_5]]
  ; GCN-NEXT:   $sgpr0 = COPY [[S_MOV_B32_6]]
  ; GCN-NEXT:   SI_RETURN_TO_EPILOG $sgpr0
  bb.0.entry:
    successors: %bb.1(0x40000000), %bb.2(0x40000000); %bb.1(50.00%), %bb.2(50.00%)

    %5:sreg_32 = IMPLICIT_DEF
    %6:vgpr_32 = COPY %5:sreg_32
    %4:vreg_64 = DS_READ2_B32_gfx9 killed %6:vgpr_32, 0, 1, 0, implicit $exec :: (load (s64) from `ptr addrspace(3) poison` + 8, align 4, addrspace 3)
    %7:sgpr_32 = COPY %4.sub0:vreg_64
    %8:vgpr_16 = nofpexcept V_CVT_F16_F32_t16_e64 0, killed %7:sgpr_32, 0, 0, 0, implicit $mode, implicit $exec
    %9:sreg_32 = S_MOV_B32 65535
    %11:sreg_32 = COPY %8:vgpr_16
    %10:sreg_32 = S_AND_B32 killed %9:sreg_32, killed %11:sreg_32, implicit-def dead $scc
    %12:sreg_32 = S_MOV_B32 5
    %13:sreg_32 = S_MUL_I32 killed %10:sreg_32, killed %12:sreg_32
    %14:sreg_32 = S_MOV_B32 2
    S_CMP_LG_U32 killed %13:sreg_32, killed %14:sreg_32, implicit-def $scc
    S_CBRANCH_SCC1 %bb.2, implicit $scc
    S_BRANCH %bb.1
  bb.1:
    %17:sreg_32 = S_MOV_B32 1
    %18:sreg_32 = S_MOV_B32 killed %17:sreg_32
    $sgpr0 = COPY %18:sreg_32
    SI_RETURN_TO_EPILOG $sgpr0
  bb.2:
    %15:sreg_32 = S_MOV_B32 2
    %16:sreg_32 = S_MOV_B32 killed %15:sreg_32
    $sgpr0 = COPY %16:sreg_32
    SI_RETURN_TO_EPILOG $sgpr0
...