# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx908 -amdgpu-spill-sgpr-to-vgpr=true -verify-machineinstrs -run-pass=si-lower-sgpr-spills -o - %s | FileCheck -check-prefix=SGPR_SPILL %s
# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx908 -amdgpu-spill-sgpr-to-vgpr=true -verify-machineinstrs --start-before=si-lower-sgpr-spills --stop-after=prologepilog -o - %s | FileCheck -check-prefix=PEI %s
# After handling the SGPR spill to VGPR in SILowerSGPRSpills pass, replace the dead frame index in the DBG_VALUE instruction with reg 0.
# Otherwise, the test would crash during PEI while trying to replace the dead frame index.
--- |
define amdgpu_kernel void @test() { ret void }
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !4, producer: "llvm", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !4)
!1 = !DILocalVariable(name: "a", scope: !2, file: !4, line: 126, type: !6)
!2 = distinct !DISubprogram(name: "test", scope: !4, file: !4, line: 1, type: !3, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, retainedNodes: !5)
!3 = !DISubroutineType(types: !4)
!4 = !{null}
!5 = !{!1}
!6 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64, align: 32)
!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!8 = !DIExpression()
!9 = !DILocation(line: 10, column: 9, scope: !2)
...
---
name: test
tracksRegLiveness: true
frameInfo:
maxAlignment: 4
stack:
- { id: 0, type: spill-slot, size: 4, alignment: 4, stack-id: sgpr-spill }
machineFunctionInfo:
maxKernArgAlign: 4
isEntryFunction: true
waveLimiter: true
scratchRSrcReg: '$sgpr96_sgpr97_sgpr98_sgpr99'
stackPtrOffsetReg: '$sgpr32'
frameOffsetReg: '$sgpr33'
hasSpilledSGPRs: true
argumentInfo:
privateSegmentBuffer: { reg: '$sgpr0_sgpr1_sgpr2_sgpr3' }
dispatchPtr: { reg: '$sgpr4_sgpr5' }
kernargSegmentPtr: { reg: '$sgpr6_sgpr7' }
workGroupIDX: { reg: '$sgpr8' }
privateSegmentWaveByteOffset: { reg: '$sgpr9' }
body: |
; SGPR_SPILL-LABEL: name: test
; SGPR_SPILL: bb.0:
; SGPR_SPILL-NEXT: successors: %bb.1(0x80000000)
; SGPR_SPILL-NEXT: {{ $}}
; SGPR_SPILL-NEXT: [[DEF:%[0-9]+]]:vgpr_32 = IMPLICIT_DEF
; SGPR_SPILL-NEXT: renamable $sgpr10 = IMPLICIT_DEF
; SGPR_SPILL-NEXT: [[V_WRITELANE_B32_:%[0-9]+]]:vgpr_32 = SI_SPILL_S32_TO_VGPR killed $sgpr10, 0, [[V_WRITELANE_B32_]]
; SGPR_SPILL-NEXT: DBG_VALUE $noreg, 0
; SGPR_SPILL-NEXT: {{ $}}
; SGPR_SPILL-NEXT: bb.1:
; SGPR_SPILL-NEXT: $sgpr10 = SI_RESTORE_S32_FROM_VGPR [[V_WRITELANE_B32_]], 0
; SGPR_SPILL-NEXT: KILL [[V_WRITELANE_B32_]]
; SGPR_SPILL-NEXT: S_ENDPGM 0
; PEI-LABEL: name: test
; PEI: bb.0:
; PEI-NEXT: successors: %bb.1(0x80000000)
; PEI-NEXT: {{ $}}
; PEI-NEXT: renamable $vgpr0 = IMPLICIT_DEF
; PEI-NEXT: renamable $sgpr10 = IMPLICIT_DEF
; PEI-NEXT: renamable $vgpr0 = SI_SPILL_S32_TO_VGPR killed $sgpr10, 0, killed $vgpr0
; PEI-NEXT: {{ $}}
; PEI-NEXT: bb.1:
; PEI-NEXT: liveins: $vgpr0
; PEI-NEXT: {{ $}}
; PEI-NEXT: $sgpr10 = SI_RESTORE_S32_FROM_VGPR $vgpr0, 0
; PEI-NEXT: KILL killed renamable $vgpr0
; PEI-NEXT: S_ENDPGM 0
bb.0:
renamable $sgpr10 = IMPLICIT_DEF
SI_SPILL_S32_SAVE killed $sgpr10, %stack.0, implicit $exec, implicit $sgpr96_sgpr97_sgpr98_sgpr99, implicit $sgpr32
DBG_VALUE %stack.0, 0, !1, !8, debug-location !9
bb.1:
renamable $sgpr10 = SI_SPILL_S32_RESTORE %stack.0, implicit $exec, implicit $sgpr96_sgpr97_sgpr98_sgpr99, implicit $sgpr32
S_ENDPGM 0
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