forked from OSchip/llvm-project
llvm-reduce: Handle cloning MachineFrameInfo and stack objects
This didn't work at all before, and would assert on any frame index. Also copy the other fields, which I believe should cover everything. There are a few that are untested since MIR serialization is apparently still missing them (isStatepointSpillSlot, ObjectSSPLayout, and ObjectSExt/ObjectZExt).
This commit is contained in:
Matt Arsenault
parent
2503f28648
commit
f163106f39
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@ -359,6 +359,7 @@ public:
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/// This object is used for SjLj exceptions.
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int getFunctionContextIndex() const { return FunctionContextIdx; }
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void setFunctionContextIndex(int I) { FunctionContextIdx = I; }
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bool hasFunctionContextIndex() const { return FunctionContextIdx != -1; }
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/// This method may be called any time after instruction
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/// selection is complete to determine if there is a call to
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@ -0,0 +1,169 @@
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# REQUIRES: amdgpu-registered-target
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# RUN: llvm-reduce -simplify-mir -mtriple=amdgcn-amd-amdhsa --test FileCheck --test-arg --check-prefix=CHECK-INTERESTINGNESS --test-arg %s --test-arg --input-file %s -o %t 2> %t.log
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# RUN: FileCheck --match-full-lines --check-prefix=RESULT %s < %t
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# CHECK-INTERESTINGNESS-COUNT-15: V_MOV_B32
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# RESULT: frameInfo:
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# RESULT-NEXT: isFrameAddressTaken: true
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# RESULT-NEXT: isReturnAddressTaken: true
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# RESULT-NEXT: hasStackMap: true
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# RESULT-NEXT: hasPatchPoint: true
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# RESULT-NEXT: offsetAdjustment: 128
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# RESULT-NEXT: maxAlignment: 64
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# RESULT-NEXT: adjustsStack: true
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# RESULT-NEXT: hasCalls: true
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# RESULT-NEXT: stackProtector: '%stack.9.guard'
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# RESULT-NEXT: maxCallFrameSize: 420
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# RESULT-NEXT: cvBytesOfCalleeSavedRegisters: 48
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# RESULT-NEXT: hasOpaqueSPAdjustment: true
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# RESULT-NEXT: hasVAStart: true
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# RESULT-NEXT: hasMustTailInVarArgFunc: true
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# RESULT-NEXT: hasTailCall: true
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# RESULT-NEXT: savePoint: '%bb.1'
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# RESULT-NEXT: restorePoint: '%bb.2'
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# RESULT-NEXT: fixedStack:
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# RESULT-NEXT: - { id: 0, offset: 56, size: 4, alignment: 8, callee-saved-register: '$sgpr44',
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# RESULT-NEXT: callee-saved-restored: false }
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# RESULT-NEXT: - { id: 1, offset: 52, size: 4, alignment: 4, callee-saved-register: '$sgpr43' }
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# RESULT-NEXT: - { id: 2, offset: 48, size: 8, alignment: 16, isAliased: true }
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# RESULT-NEXT: - { id: 3, offset: 16, size: 16, alignment: 16 }
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# RESULT-NEXT: - { id: 4, size: 8, alignment: 16 }
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# RESULT-NEXT: stack:
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# RESULT-NEXT: - { id: 0, name: bigalloca, offset: 16, size: 16, alignment: 8 }
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# RESULT-NEXT: - { id: 1, offset: 64, size: 4, alignment: 16, debug-info-variable: '!8',
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# RESULT-NEXT: debug-info-expression: '!DIExpression()', debug-info-location: '!10' }
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# RESULT-NEXT: - { id: 2, type: spill-slot, offset: 32, size: 4, alignment: 4 }
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# RESULT-NEXT: - { id: 3, type: spill-slot, offset: 36, size: 4, alignment: 4, stack-id: sgpr-spill }
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# RESULT-NEXT: - { id: 4, name: dynamic_alloca, type: variable-sized, alignment: 64 }
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# RESULT-NEXT: - { id: 5, name: m1, size: 2052, alignment: 4, local-offset: 0 }
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# RESULT-NEXT: - { id: 6, name: m2, size: 2060, alignment: 32, local-offset: 2080 }
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# RESULT-NEXT: - { id: 7, offset: 48, size: 4, alignment: 4, callee-saved-register: '$sgpr40' }
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# RESULT-NEXT: - { id: 8, offset: 52, size: 4, alignment: 4, callee-saved-register: '$sgpr41',
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# RESULT-NEXT: callee-saved-restored: false }
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# RESULT-NEXT: - { id: 9, name: guard, offset: 128, size: 4, alignment: 4 }
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# RESULT: S_NOP 0
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# RESULT-NEXT: [[FI0:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %stack.1, implicit $exec
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# RESULT-NEXT: [[FI1:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %stack.0.bigalloca, implicit $exec
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# RESULT-NEXT: [[FI2:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %stack.2, implicit $exec
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# RESULT-NEXT: [[FI3:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %stack.3, implicit $exec
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# RESULT-NEXT: [[FI4:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %stack.4.dynamic_alloca, implicit $exec
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# RESULT-NEXT: [[FI5:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %stack.5.m1, implicit $exec
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# RESULT-NEXT: [[FI6:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %stack.6.m2, implicit $exec
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# RESULT-NEXT: [[FI7:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %stack.7, implicit $exec
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# RESULT-NEXT: [[FI8:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %stack.8, implicit $exec
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# RESULT-NEXT: [[FI9:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %fixed-stack.2, implicit $exec
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# RESULT-NEXT: [[FI10:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %fixed-stack.3, implicit $exec
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# RESULT-NEXT: [[FI11:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %fixed-stack.4, implicit $exec
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# RESULT-NEXT: [[FI12:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %fixed-stack.1, implicit $exec
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# RESULT-NEXT: [[FI13:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %fixed-stack.0, implicit $exec
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# RESULT-NEXT: [[FI14:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 %stack.9.guard, implicit $exec
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# RESULT-NEXT: S_ENDPGM 0, implicit [[FI0]], implicit [[FI1]], implicit [[FI2]], implicit [[FI3]], implicit [[FI4]], implicit [[FI5]], implicit [[FI6]], implicit [[FI7]], implicit [[FI8]], implicit [[FI9]], implicit [[FI10]], implicit [[FI11]], implicit [[FI12]], implicit [[FI13]], implicit [[FI14]]
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--- |
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define void @func(i32 %size) !dbg !5 {
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%bigalloca = alloca [4 x i32], align 1, addrspace(5)
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%dynamic_alloca = alloca i32, i32 %size, align 1, addrspace(5)
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%dead = alloca i64, align 1, addrspace(5)
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%m1 = alloca [513 x float], align 1, addrspace(5)
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%m2 = alloca [513 x float], align 1, addrspace(5)
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%guard = alloca i32, align 4, addrspace(5)
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call void @llvm.dbg.declare(metadata i32 addrspace(5)* undef, metadata !8, metadata !DIExpression()), !dbg !10
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ret void
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}
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #0
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attributes #0 = { nocallback nofree nosync nounwind readnone speculatable willreturn }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2, !3, !4}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug)
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!1 = !DIFile(filename: "tmp.c", directory: "/dev/null")
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!2 = !{i32 2, !"Dwarf Version", i32 4}
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!3 = !{i32 2, !"Debug Info Version", i32 3}
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!4 = !{i32 7, !"PIC Level", i32 2}
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!5 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !6, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0)
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!6 = !DISubroutineType(types: !7)
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!7 = !{null}
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!8 = !DILocalVariable(name: "in", arg: 1, scope: !5, file: !1, line: 1, type: !9)
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!9 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!10 = !DILocation(line: 1, column: 14, scope: !5)
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...
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---
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name: func
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tracksRegLiveness: true
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frameInfo:
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isFrameAddressTaken: true
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isReturnAddressTaken: true
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hasStackMap: true
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hasPatchPoint: true
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stackSize: 0
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offsetAdjustment: 128
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maxAlignment: 1
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adjustsStack: true
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hasCalls: true
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stackProtector: '%stack.9'
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maxCallFrameSize: 420
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cvBytesOfCalleeSavedRegisters: 48
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hasOpaqueSPAdjustment: true
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hasVAStart: true
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hasMustTailInVarArgFunc: true
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hasTailCall: true
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localFrameSize: 0
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savePoint: '%bb.1'
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restorePoint: '%bb.2'
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fixedStack:
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- { id: 0, offset: 0, size: 8, alignment: 4, isImmutable: true, isAliased: false }
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- { id: 1, offset: 16, size: 16, alignment: 8, isImmutable: false, isAliased: false }
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- { id: 2, offset: 48, size: 8, alignment: 4, isImmutable: false, isAliased: true }
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- { id: 3, offset: 52, size: 4, alignment: 4, callee-saved-register: '$sgpr43', callee-saved-restored: true }
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- { id: 4, offset: 56, size: 4, alignment: 4, callee-saved-register: '$sgpr44', callee-saved-restored: false }
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stack:
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- { id: 1, offset: 16, size: 16, alignment: 8, name: bigalloca }
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- { id: 0, offset: 64, size: 4, alignment: 16,
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debug-info-variable: '!8', debug-info-expression: '!DIExpression()',
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debug-info-location: '!10' }
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- { id: 2, offset: 32, size: 4, alignment: 4, type: spill-slot }
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- { id: 3, offset: 36, size: 4, alignment: 4, type: spill-slot, stack-id: sgpr-spill }
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- { id: 4, type: variable-sized, alignment: 64, name: dynamic_alloca }
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- { id: 5, name: m1, size: 2052, alignment: 4, local-offset: 0 }
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- { id: 6, name: m2, size: 2060, alignment: 32, local-offset: 2080 }
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- { id: 7, offset: 48, size: 4, alignment: 4, callee-saved-register: '$sgpr40', callee-saved-restored: true}
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- { id: 8, offset: 52, size: 4, alignment: 4, callee-saved-register: '$sgpr41', callee-saved-restored: false}
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- { id: 9, offset: 128, size: 4, alignment: 4, name: guard }
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body: |
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bb.0:
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S_NOP 0
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%0:vgpr_32 = V_MOV_B32_e32 %stack.0, implicit $exec
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%1:vgpr_32 = V_MOV_B32_e32 %stack.1, implicit $exec
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%2:vgpr_32 = V_MOV_B32_e32 %stack.2, implicit $exec
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%3:vgpr_32 = V_MOV_B32_e32 %stack.3, implicit $exec
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%4:vgpr_32 = V_MOV_B32_e32 %stack.4, implicit $exec
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%5:vgpr_32 = V_MOV_B32_e32 %stack.5, implicit $exec
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%6:vgpr_32 = V_MOV_B32_e32 %stack.6, implicit $exec
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%7:vgpr_32 = V_MOV_B32_e32 %stack.7, implicit $exec
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%8:vgpr_32 = V_MOV_B32_e32 %stack.8, implicit $exec
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%9:vgpr_32 = V_MOV_B32_e32 %fixed-stack.2, implicit $exec
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%10:vgpr_32 = V_MOV_B32_e32 %fixed-stack.1, implicit $exec
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%11:vgpr_32 = V_MOV_B32_e32 %fixed-stack.0, implicit $exec
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%12:vgpr_32 = V_MOV_B32_e32 %fixed-stack.3, implicit $exec
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%13:vgpr_32 = V_MOV_B32_e32 %fixed-stack.4, implicit $exec
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%14:vgpr_32 = V_MOV_B32_e32 %stack.9.guard, implicit $exec
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S_ENDPGM 0, implicit %0, implicit %1, implicit %2, implicit %3, implicit %4, implicit %5, implicit %6, implicit %7, implicit %8, implicit %9, implicit %10, implicit %11, implicit %12, implicit %13, implicit %14
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bb.1:
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S_NOP 0
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S_WAITCNT 0
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bb.2:
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S_WAITCNT 0
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S_NOP 0
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...
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@ -10,6 +10,7 @@
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#include "llvm/CodeGen/MIRParser/MIRParser.h"
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#include "llvm/CodeGen/MIRPrinter.h"
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#include "llvm/CodeGen/MachineDominators.h"
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#include "llvm/CodeGen/MachineFrameInfo.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/CodeGen/MachineFunctionPass.h"
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#include "llvm/CodeGen/MachineRegisterInfo.h"
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@ -20,16 +21,127 @@
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#include "llvm/Target/TargetMachine.h"
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#include "llvm/Transforms/Utils/Cloning.h"
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// FIXME: Preserve frame index numbers. The numbering is off for fixed objects
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// since they are inserted at the beginning. This would avoid the need for the
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// Src2DstFrameIndex map and in the future target MFI code wouldn't need to
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// worry about it either.
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static void cloneFrameInfo(
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MachineFrameInfo &DstMFI, const MachineFrameInfo &SrcMFI,
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const DenseMap<MachineBasicBlock *, MachineBasicBlock *> Src2DstMBB,
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DenseMap<int, int> &Src2DstFrameIndex) {
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DstMFI.setFrameAddressIsTaken(SrcMFI.isFrameAddressTaken());
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DstMFI.setReturnAddressIsTaken(SrcMFI.isReturnAddressTaken());
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DstMFI.setHasStackMap(SrcMFI.hasStackMap());
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DstMFI.setHasPatchPoint(SrcMFI.hasPatchPoint());
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DstMFI.setUseLocalStackAllocationBlock(
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SrcMFI.getUseLocalStackAllocationBlock());
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DstMFI.setOffsetAdjustment(SrcMFI.getOffsetAdjustment());
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DstMFI.ensureMaxAlignment(SrcMFI.getMaxAlign());
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assert(DstMFI.getMaxAlign() == SrcMFI.getMaxAlign() &&
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"we need to set exact alignment");
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DstMFI.setAdjustsStack(SrcMFI.adjustsStack());
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DstMFI.setHasCalls(SrcMFI.hasCalls());
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DstMFI.setHasOpaqueSPAdjustment(SrcMFI.hasOpaqueSPAdjustment());
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DstMFI.setHasCopyImplyingStackAdjustment(
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SrcMFI.hasCopyImplyingStackAdjustment());
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DstMFI.setHasVAStart(SrcMFI.hasVAStart());
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DstMFI.setHasMustTailInVarArgFunc(SrcMFI.hasMustTailInVarArgFunc());
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DstMFI.setHasTailCall(SrcMFI.hasTailCall());
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DstMFI.setMaxCallFrameSize(SrcMFI.getMaxCallFrameSize());
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DstMFI.setCVBytesOfCalleeSavedRegisters(
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SrcMFI.getCVBytesOfCalleeSavedRegisters());
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if (MachineBasicBlock *SavePt = SrcMFI.getSavePoint())
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DstMFI.setSavePoint(Src2DstMBB.find(SavePt)->second);
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if (MachineBasicBlock *RestorePt = SrcMFI.getRestorePoint())
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DstMFI.setRestorePoint(Src2DstMBB.find(RestorePt)->second);
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for (int i = SrcMFI.getObjectIndexBegin(), e = SrcMFI.getObjectIndexEnd();
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i != e; ++i) {
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int NewFI;
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if (SrcMFI.isFixedObjectIndex(i)) {
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NewFI = DstMFI.CreateFixedObject(
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SrcMFI.getObjectSize(i), SrcMFI.getObjectOffset(i),
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SrcMFI.isImmutableObjectIndex(i), SrcMFI.isAliasedObjectIndex(i));
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} else if (SrcMFI.isVariableSizedObjectIndex(i)) {
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NewFI = DstMFI.CreateVariableSizedObject(SrcMFI.getObjectAlign(i),
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SrcMFI.getObjectAllocation(i));
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} else {
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NewFI = DstMFI.CreateStackObject(
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SrcMFI.getObjectSize(i), SrcMFI.getObjectAlign(i),
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SrcMFI.isSpillSlotObjectIndex(i), SrcMFI.getObjectAllocation(i),
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SrcMFI.getStackID(i));
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DstMFI.setObjectOffset(NewFI, SrcMFI.getObjectOffset(i));
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}
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if (SrcMFI.isStatepointSpillSlotObjectIndex(i))
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DstMFI.markAsStatepointSpillSlotObjectIndex(NewFI);
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DstMFI.setObjectSSPLayout(NewFI, SrcMFI.getObjectSSPLayout(i));
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DstMFI.setObjectZExt(NewFI, SrcMFI.isObjectZExt(i));
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DstMFI.setObjectSExt(NewFI, SrcMFI.isObjectSExt(i));
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Src2DstFrameIndex[i] = NewFI;
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}
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for (unsigned I = 0, E = SrcMFI.getLocalFrameObjectCount(); I < E; ++I) {
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auto LocalObject = SrcMFI.getLocalFrameObjectMap(I);
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DstMFI.mapLocalFrameObject(LocalObject.first, LocalObject.second);
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}
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// Remap the frame indexes in the CalleeSavedInfo
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std::vector<CalleeSavedInfo> CalleeSavedInfos = SrcMFI.getCalleeSavedInfo();
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for (CalleeSavedInfo &CSInfo : CalleeSavedInfos) {
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if (!CSInfo.isSpilledToReg())
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CSInfo.setFrameIdx(Src2DstFrameIndex[CSInfo.getFrameIdx()]);
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}
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DstMFI.setCalleeSavedInfo(std::move(CalleeSavedInfos));
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if (SrcMFI.hasStackProtectorIndex()) {
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DstMFI.setStackProtectorIndex(
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Src2DstFrameIndex[SrcMFI.getStackProtectorIndex()]);
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}
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// FIXME: Needs test, missing MIR serialization.
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if (SrcMFI.hasFunctionContextIndex()) {
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DstMFI.setFunctionContextIndex(
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Src2DstFrameIndex[SrcMFI.getFunctionContextIndex()]);
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}
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}
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static std::unique_ptr<MachineFunction> cloneMF(MachineFunction *SrcMF) {
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auto DstMF = std::make_unique<MachineFunction>(
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SrcMF->getFunction(), SrcMF->getTarget(), SrcMF->getSubtarget(),
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SrcMF->getFunctionNumber(), SrcMF->getMMI());
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DenseMap<MachineBasicBlock *, MachineBasicBlock *> Src2DstMBB;
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DenseMap<Register, Register> Src2DstReg;
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DenseMap<int, int> Src2DstFrameIndex;
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auto *SrcMRI = &SrcMF->getRegInfo();
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auto *DstMRI = &DstMF->getRegInfo();
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// Clone blocks.
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for (MachineBasicBlock &SrcMBB : *SrcMF)
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Src2DstMBB[&SrcMBB] = DstMF->CreateMachineBasicBlock();
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const MachineFrameInfo &SrcMFI = SrcMF->getFrameInfo();
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MachineFrameInfo &DstMFI = DstMF->getFrameInfo();
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// Copy stack objects and other info
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cloneFrameInfo(DstMFI, SrcMFI, Src2DstMBB, Src2DstFrameIndex);
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// Remap the debug info frame index references.
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DstMF->VariableDbgInfos = SrcMF->VariableDbgInfos;
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for (MachineFunction::VariableDbgInfo &DbgInfo : DstMF->VariableDbgInfos)
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DbgInfo.Slot = Src2DstFrameIndex[DbgInfo.Slot];
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// FIXME: Need to clone MachineFunctionInfo, which may also depend on frame
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// index and block mapping.
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// Create vregs.
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for (auto &SrcMBB : *SrcMF) {
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for (auto &SrcMI : SrcMBB) {
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@ -75,9 +187,6 @@ static std::unique_ptr<MachineFunction> cloneMF(MachineFunction *SrcMF) {
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}
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}
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// Clone blocks.
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for (auto &SrcMBB : *SrcMF)
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Src2DstMBB[&SrcMBB] = DstMF->CreateMachineBasicBlock();
|
||||
// Link blocks.
|
||||
for (auto &SrcMBB : *SrcMF) {
|
||||
auto *DstMBB = Src2DstMBB[&SrcMBB];
|
||||
|
|
@ -110,7 +219,11 @@ static std::unique_ptr<MachineFunction> cloneMF(MachineFunction *SrcMF) {
|
|||
// Update MBB.
|
||||
if (DstMO.isMBB()) {
|
||||
DstMO.setMBB(Src2DstMBB[DstMO.getMBB()]);
|
||||
} else if (DstMO.isFI()) {
|
||||
// Update frame indexes
|
||||
DstMO.setIndex(Src2DstFrameIndex[DstMO.getIndex()]);
|
||||
}
|
||||
|
||||
DstMI->addOperand(DstMO);
|
||||
}
|
||||
DstMI->setMemRefs(*DstMF, SrcMI.memoperands());
|
||||
|
|
|
|||
Loading…
Reference in New Issue