# 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: '$sgpr24_sgpr25_sgpr26_sgpr27'
frameOffsetReg: '$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-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: liveins: $sgpr6_sgpr7
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: undef [[V_MOV_B32_e32_:%[0-9]+]].sub3:vreg_512 = V_MOV_B32_e32 0, implicit $exec
; CHECK-NEXT: [[V_MOV_B32_e32_1:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
; CHECK-NEXT: [[V_ADD_U32_e32_:%[0-9]+]]:vgpr_32 = V_ADD_U32_e32 0, [[V_MOV_B32_e32_1]], implicit $exec
; CHECK-NEXT: [[COPY:%[0-9]+]]:vreg_512 = COPY [[V_MOV_B32_e32_]]
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: BUFFER_STORE_DWORD_OFFEN [[V_MOV_B32_e32_]].sub3, undef %5:vgpr_32, $sgpr24_sgpr25_sgpr26_sgpr27, $sgpr32, 0, 0, 0, implicit $exec :: (store (s32), align 8, addrspace 5)
; CHECK-NEXT: dead [[DS_READ_B32_gfx9_:%[0-9]+]]:vgpr_32 = DS_READ_B32_gfx9 undef %7:vgpr_32, 0, 0, implicit $exec
; CHECK-NEXT: dead [[DS_READ_B64_gfx9_:%[0-9]+]]:vreg_64 = DS_READ_B64_gfx9 [[V_MOV_B32_e32_1]], 0, 0, implicit $exec
; CHECK-NEXT: dead [[DS_READ_B128_gfx9_:%[0-9]+]]:vreg_128 = DS_READ_B128_gfx9 [[V_ADD_U32_e32_]], 0, 0, implicit $exec
; CHECK-NEXT: [[COPY1:%[0-9]+]]:vgpr_32 = COPY [[COPY]].sub0
; CHECK-NEXT: undef [[COPY2:%[0-9]+]].sub1:vreg_512 = COPY [[COPY]].sub1
; CHECK-NEXT: INLINEASM &"", 1 /* sideeffect attdialect */, 851978 /* regdef:VGPR_16 */, def dead [[COPY1]], 851978 /* regdef:VGPR_16 */, def dead [[COPY]].sub1, 2147483657 /* reguse tiedto:$0 */, [[COPY1]], 2147549193 /* reguse tiedto:$1 */, [[COPY]].sub1
; CHECK-NEXT: [[COPY2:%[0-9]+]].sub0:vreg_512 = COPY [[COPY]].sub0
; CHECK-NEXT: [[COPY2:%[0-9]+]].sub3:vreg_512 = COPY [[COPY]].sub3
; CHECK-NEXT: [[V_MOV_B32_e32_2:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
; CHECK-NEXT: dead [[V_ADD_CO_U32_e32_:%[0-9]+]]:vgpr_32 = V_ADD_CO_U32_e32 4, [[V_MOV_B32_e32_2]], implicit-def dead $vcc, implicit $exec
; CHECK-NEXT: [[COPY2:%[0-9]+]].sub2:vreg_512 = COPY undef [[V_MOV_B32_e32_1]]
; CHECK-NEXT: [[COPY2:%[0-9]+]].sub5:vreg_512 = COPY undef [[V_MOV_B32_e32_1]]
; CHECK-NEXT: [[COPY:%[0-9]+]]:vreg_512 = COPY [[COPY2]]
; CHECK-NEXT: 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, implicit $exec :: (store (s32), 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_CO_U32_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
...
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