# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx906 -verify-machineinstrs  -run-pass=machine-scheduler -verify-misched -o - %s | FileCheck %s

# This would assert that a dead def should have no uses, but the dead
# def and use have different subreg indices.

---
name:            multi_def_dead_reg_subreg_check
tracksRegLiveness: true
machineFunctionInfo:
  isEntryFunction: true
  scratchRSrcReg:  '$sgpr24_sgpr25_sgpr26_sgpr27'
  scratchWaveOffsetReg: '$sgpr32'
  frameOffsetReg:  '$sgpr32'
  stackPtrOffsetReg: '$sgpr32'
  argumentInfo:
    privateSegmentBuffer: { reg: '$sgpr0_sgpr1_sgpr2_sgpr3' }
    privateSegmentWaveByteOffset: { reg: '$sgpr33' }
body:             |
  ; CHECK-LABEL: name: multi_def_dead_reg_subreg_check
  ; CHECK: bb.0:
  ; CHECK:   successors: %bb.1(0x80000000)
  ; CHECK:   liveins: $sgpr6_sgpr7
  ; CHECK:   undef %0.sub3:vreg_512 = V_MOV_B32_e32 0, implicit $exec
  ; CHECK:   [[V_MOV_B32_e32_:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
  ; CHECK:   [[V_ADD_U32_e32_:%[0-9]+]]:vgpr_32 = V_ADD_U32_e32 0, [[V_MOV_B32_e32_]], implicit $exec
  ; CHECK:   [[V_MOV_B32_e32_1:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
  ; CHECK:   [[COPY:%[0-9]+]]:vreg_512 = COPY %0
  ; CHECK: bb.1:
  ; CHECK:   successors: %bb.1(0x80000000)
  ; CHECK:   BUFFER_STORE_DWORD_OFFEN %0.sub3, undef %5:vgpr_32, $sgpr24_sgpr25_sgpr26_sgpr27, $sgpr32, 0, 0, 0, 0, 0, 0, implicit $exec :: (store 4, align 8, addrspace 5)
  ; CHECK:   dead %6:vgpr_32 = DS_READ_B32_gfx9 undef %7:vgpr_32, 0, 0, implicit $exec
  ; CHECK:   dead %8:vreg_64 = DS_READ_B64_gfx9 [[V_MOV_B32_e32_]], 0, 0, implicit $exec
  ; CHECK:   dead %9:vreg_128 = DS_READ_B128_gfx9 [[V_ADD_U32_e32_]], 0, 0, implicit $exec
  ; CHECK:   [[COPY1:%[0-9]+]]:vgpr_32 = COPY [[COPY]].sub0
  ; CHECK:   undef %11.sub1:vreg_512 = COPY [[COPY]].sub1
  ; CHECK:   INLINEASM &"", 1, 851978, def dead [[COPY1]], 851978, def dead [[COPY]].sub1, 2147483657, [[COPY1]], 2147549193, [[COPY]].sub1
  ; CHECK:   %11.sub0:vreg_512 = COPY [[COPY]].sub0
  ; CHECK:   %11.sub3:vreg_512 = COPY [[COPY]].sub3
  ; CHECK:   dead %10:vgpr_32 = V_ADD_I32_e32 4, [[V_MOV_B32_e32_1]], implicit-def dead $vcc, implicit $exec
  ; CHECK:   %11.sub2:vreg_512 = COPY undef [[V_MOV_B32_e32_]]
  ; CHECK:   %11.sub5:vreg_512 = COPY undef [[V_MOV_B32_e32_]]
  ; CHECK:   [[COPY2:%[0-9]+]]:vreg_512 = COPY %11
  ; CHECK:   S_BRANCH %bb.1
  bb.0:
    liveins: $sgpr6_sgpr7

    undef %0.sub3:vreg_512 = V_MOV_B32_e32 0, implicit $exec
    %1:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
    %2:vgpr_32 = V_ADD_U32_e32 0, %1, implicit $exec
    %3:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
    %4:vreg_512 = COPY %0

  bb.1:
    BUFFER_STORE_DWORD_OFFEN %0.sub3, undef %5:vgpr_32, $sgpr24_sgpr25_sgpr26_sgpr27, $sgpr32, 0, 0, 0, 0, 0, 0, implicit $exec :: (store 4, align 8, addrspace 5)
    %6:vgpr_32 = DS_READ_B32_gfx9 undef %7:vgpr_32, 0, 0, implicit $exec
    %8:vreg_64 = DS_READ_B64_gfx9 %1, 0, 0, implicit $exec
    %9:vreg_128 = DS_READ_B128_gfx9 %2, 0, 0, implicit $exec
    %10:vgpr_32 = V_ADD_I32_e32 4, %3, implicit-def dead $vcc, implicit $exec
    undef %11.sub0:vreg_512 = COPY %4.sub0
    %12:vgpr_32 = COPY %4.sub0
    %11.sub1:vreg_512 = COPY %4.sub1
    INLINEASM &"", 1, 851978, def dead %12, 851978, def dead %4.sub1, 2147483657, %12, 2147549193, %4.sub1
    %11.sub2:vreg_512 = COPY undef %1
    %11.sub3:vreg_512 = COPY %4.sub3
    %11.sub5:vreg_512 = COPY undef %1
    %4:vreg_512 = COPY %11
    S_BRANCH %bb.1

...