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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=amdgcn-amd-amdhsa -start-before=greedy,0 -stop-after=virtregrewriter,1 -verify-machineinstrs -o - %s | FileCheck %s
# The undef copy of %4 is allocated to $vgpr3, and the identity copy
# was deleted, and $vgpr3 was considered undef. The code to replace
# the undef copy with a kill was incorrectly checking the dest
# operand, rather than the source.
--- |
define amdgpu_kernel void @undef_identity_copy() {
ret void
}
declare hidden float @bar(<4 x float>)
declare hidden void @foo()
...
---
name: undef_identity_copy
tracksRegLiveness: true
frameInfo:
maxAlignment: 4
hasCalls: true
machineFunctionInfo:
isEntryFunction: true
scratchRSrcReg: '$sgpr0_sgpr1_sgpr2_sgpr3'
frameOffsetReg: '$sgpr95'
stackPtrOffsetReg: '$sgpr32'
body: |
bb.0:
; CHECK-LABEL: name: undef_identity_copy
; CHECK: renamable $vgpr40_vgpr41_vgpr42_vgpr43 = FLAT_LOAD_DWORDX4 undef renamable $vgpr0_vgpr1, 0, 0, implicit $exec, implicit $flat_scr :: (load (s128), addrspace 1)
; CHECK-NEXT: renamable $sgpr6_sgpr7 = SI_PC_ADD_REL_OFFSET target-flags(amdgpu-rel32-lo) @foo + 4, target-flags(amdgpu-rel32-hi) @foo + 4, implicit-def dead $scc
; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sgpr32, implicit $sgpr32, implicit $sgpr95, implicit-def $scc
; CHECK-NEXT: $sgpr4 = COPY $sgpr95
; CHECK-NEXT: dead $sgpr30_sgpr31 = SI_CALL killed renamable $sgpr6_sgpr7, @foo, csr_amdgpu, implicit $sgpr0_sgpr1_sgpr2_sgpr3, implicit $sgpr4
; CHECK-NEXT: ADJCALLSTACKDOWN 0, 4, implicit-def $scc, implicit-def $sgpr32, implicit $sgpr32, implicit $sgpr95
; CHECK-NEXT: renamable $sgpr6_sgpr7 = SI_PC_ADD_REL_OFFSET target-flags(amdgpu-rel32-lo) @bar + 4, target-flags(amdgpu-rel32-hi) @bar + 4, implicit-def dead $scc
; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $scc, implicit-def $sgpr32, implicit $sgpr32, implicit $sgpr95
; CHECK-NEXT: $sgpr4 = COPY $sgpr95
; CHECK-NEXT: $vgpr0 = COPY renamable $vgpr40
; CHECK-NEXT: $vgpr1 = COPY renamable $vgpr41
; CHECK-NEXT: $vgpr2 = COPY killed renamable $vgpr42
; CHECK-NEXT: $vgpr3 = KILL undef renamable $vgpr3
; CHECK-NEXT: dead $sgpr30_sgpr31 = SI_CALL killed renamable $sgpr6_sgpr7, @bar, csr_amdgpu, implicit $sgpr0_sgpr1_sgpr2_sgpr3, implicit $sgpr4, implicit $vgpr0, implicit killed $vgpr1, implicit killed $vgpr2, implicit killed $vgpr3, implicit-def $vgpr0
; CHECK-NEXT: ADJCALLSTACKDOWN 0, 4, implicit-def $scc, implicit-def $sgpr32, implicit $sgpr32, implicit $sgpr95
; CHECK-NEXT: FLAT_STORE_DWORD undef renamable $vgpr0_vgpr1, killed renamable $vgpr0, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32), addrspace 1)
; CHECK-NEXT: S_ENDPGM 0
%0:vreg_128 = FLAT_LOAD_DWORDX4 undef %1:vreg_64, 0, 0, implicit $exec, implicit $flat_scr :: (load (s128), addrspace 1)
%2:sreg_64 = SI_PC_ADD_REL_OFFSET target-flags(amdgpu-rel32-lo) @foo + 4, target-flags(amdgpu-rel32-hi) @foo + 4, implicit-def dead $scc
ADJCALLSTACKUP 0, 0, implicit-def $sgpr32, implicit $sgpr32, implicit $sgpr95, implicit-def $scc
$sgpr4 = COPY $sgpr95
dead $sgpr30_sgpr31 = SI_CALL %2, @foo, csr_amdgpu, implicit $sgpr0_sgpr1_sgpr2_sgpr3, implicit $sgpr4
ADJCALLSTACKDOWN 0, 4, implicit-def $scc, implicit-def $sgpr32, implicit $sgpr32, implicit $sgpr95
%3:sreg_64 = SI_PC_ADD_REL_OFFSET target-flags(amdgpu-rel32-lo) @bar + 4, target-flags(amdgpu-rel32-hi) @bar + 4, implicit-def dead $scc
ADJCALLSTACKUP 0, 0, implicit-def $scc, implicit-def $sgpr32, implicit $sgpr32, implicit $sgpr95
$sgpr4 = COPY $sgpr95
$vgpr0 = COPY %0.sub0
$vgpr1 = COPY %0.sub1
$vgpr2 = COPY %0.sub2
$vgpr3 = COPY undef %4:vgpr_32
dead $sgpr30_sgpr31 = SI_CALL %3, @bar, csr_amdgpu, implicit $sgpr0_sgpr1_sgpr2_sgpr3, implicit $sgpr4, implicit $vgpr0, implicit killed $vgpr1, implicit killed $vgpr2, implicit killed $vgpr3, implicit-def $vgpr0
%5:vgpr_32 = COPY $vgpr0
ADJCALLSTACKDOWN 0, 4, implicit-def $scc, implicit-def $sgpr32, implicit $sgpr32, implicit $sgpr95
FLAT_STORE_DWORD undef %6:vreg_64, %5, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32), addrspace 1)
S_ENDPGM 0
...
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