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1 # RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx908 -amdgpu-spill-vgpr-to-agpr=true -verify-machineinstrs -run-pass=prologepilog -o - %s | FileCheck %s
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2
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3 # After handling the VGPR spill to AGPR copy, we replace the dead frame index in the DBG_VALUE instruction with reg 0.
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4 # Skip looking for frame indices in the debug value instruction for incoming arguments passed via stack. The test would crash otherwise.
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5 # It is safe to skip the fixed stack objects as they will never become the spill objects.
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6
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7 --- |
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8 define amdgpu_kernel void @test() { ret void }
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9
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10 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !4, producer: "llvm", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !4)
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11 !1 = !DILocalVariable(name: "a", scope: !2, file: !4, line: 126, type: !6)
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12 !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)
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13 !3 = !DISubroutineType(types: !4)
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14 !4 = !{null}
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15 !5 = !{!1}
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16 !6 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 64, align: 32)
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17 !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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18 !8 = !DIExpression()
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19 !9 = !DILocation(line: 10, column: 9, scope: !2)
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20
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21 ...
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22 ---
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23 name: test
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24 tracksRegLiveness: true
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25 frameInfo:
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26 maxAlignment: 4
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27 fixedStack:
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28 - { id: 0, type: default, offset: 4, size: 4, alignment: 4, stack-id: default }
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29 stack:
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30 - { id: 0, type: spill-slot, size: 4, alignment: 4 }
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31 machineFunctionInfo:
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32 maxKernArgAlign: 4
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33 isEntryFunction: true
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34 waveLimiter: true
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35 scratchRSrcReg: '$sgpr96_sgpr97_sgpr98_sgpr99'
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36 stackPtrOffsetReg: '$sgpr32'
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37 frameOffsetReg: '$sgpr33'
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38 hasSpilledVGPRs: true
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39 argumentInfo:
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40 privateSegmentBuffer: { reg: '$sgpr0_sgpr1_sgpr2_sgpr3' }
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41 dispatchPtr: { reg: '$sgpr4_sgpr5' }
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42 kernargSegmentPtr: { reg: '$sgpr6_sgpr7' }
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43 workGroupIDX: { reg: '$sgpr8' }
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44 privateSegmentWaveByteOffset: { reg: '$sgpr9' }
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45 body: |
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46 ; CHECK-LABEL: name: test
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47 ; CHECK: bb.0:
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48 ; CHECK: DBG_VALUE $noreg, 0
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49 bb.0:
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50 $vgpr2 = IMPLICIT_DEF
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51 SI_SPILL_V32_SAVE $vgpr2, %stack.0, $sgpr32, 0, implicit $exec :: (store (s32) into %stack.0, align 4, addrspace 5)
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52 DBG_VALUE %fixed-stack.0, 0, !1, !8, debug-location !9
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53
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54 bb.1:
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55 renamable $vgpr2 = SI_SPILL_V32_RESTORE %stack.0, $sgpr32, 0, implicit $exec :: (load (s32) from %stack.0, align 4, addrspace 5)
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56 S_ENDPGM 0
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