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c83c29a7b7
There is no situation where this rarely-used argument cannot be substituted with a DIExpression and removing it allows us to simplify the DWARF backend. Note that this patch does not yet remove any of the newly dead code. rdar://problem/33580047 Differential Revision: https://reviews.llvm.org/D35951 llvm-svn: 309426
108 lines
6.8 KiB
LLVM
108 lines
6.8 KiB
LLVM
; RUN: llc -mtriple=x86_64-unknown-linux-gnu %s -o %t -filetype=obj
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; RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck %s
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; RUN: llvm-as < %s | llvm-dis | FileCheck --check-prefix=CHECK-DIS %s
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; CHECK: 0x0000000b: DW_TAG_compile_unit
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; CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[0x00000035] = "foo.cpp")
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; CHECK: 0x{{[0-9a-f]+}}: DW_TAG_class_type
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; CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[0x{{[0-9a-f]+}}] = "D")
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; CHECK: 0x{{[0-9a-f]+}}: DW_TAG_member
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; CHECK: DW_AT_name [DW_FORM_strp] ( .debug_str[0x{{[0-9a-f]+}}] = "c1")
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; CHECK: DW_TAG_subprogram
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; CHECK-NEXT: DW_AT_name [DW_FORM_strp] ( .debug_str[0x{{[0-9a-f]+}}] = "D")
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; CHECK: DW_TAG_formal_parameter
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; CHECK: DW_AT_artificial [DW_FORM_flag_present] (true)
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; CHECK-DIS: DIFlagArtificial
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%class.D = type { i32, i32, i32, i32 }
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@_ZN1DC1Ev = alias void (%class.D*), void (%class.D*)* @_ZN1DC2Ev
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@_ZN1DC1ERKS_ = alias void (%class.D*, %class.D*), void (%class.D*, %class.D*)* @_ZN1DC2ERKS_
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define void @_ZN1DC2Ev(%class.D* nocapture %this) unnamed_addr nounwind uwtable align 2 !dbg !5 {
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entry:
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tail call void @llvm.dbg.value(metadata %class.D* %this, metadata !29, metadata !DIExpression()), !dbg !36
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%c1 = getelementptr inbounds %class.D, %class.D* %this, i64 0, i32 0, !dbg !37
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store i32 1, i32* %c1, align 4, !dbg !37
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%c2 = getelementptr inbounds %class.D, %class.D* %this, i64 0, i32 1, !dbg !42
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store i32 2, i32* %c2, align 4, !dbg !42
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%c3 = getelementptr inbounds %class.D, %class.D* %this, i64 0, i32 2, !dbg !43
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store i32 3, i32* %c3, align 4, !dbg !43
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%c4 = getelementptr inbounds %class.D, %class.D* %this, i64 0, i32 3, !dbg !44
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store i32 4, i32* %c4, align 4, !dbg !44
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ret void, !dbg !45
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}
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define void @_ZN1DC2ERKS_(%class.D* nocapture %this, %class.D* nocapture %d) unnamed_addr nounwind uwtable align 2 !dbg !31 {
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entry:
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tail call void @llvm.dbg.value(metadata %class.D* %this, metadata !34, metadata !DIExpression()), !dbg !46
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tail call void @llvm.dbg.value(metadata %class.D* %d, metadata !35, metadata !DIExpression()), !dbg !46
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%c1 = getelementptr inbounds %class.D, %class.D* %d, i64 0, i32 0, !dbg !47
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%0 = load i32, i32* %c1, align 4, !dbg !47
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%c12 = getelementptr inbounds %class.D, %class.D* %this, i64 0, i32 0, !dbg !47
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store i32 %0, i32* %c12, align 4, !dbg !47
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%c2 = getelementptr inbounds %class.D, %class.D* %d, i64 0, i32 1, !dbg !49
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%1 = load i32, i32* %c2, align 4, !dbg !49
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%c23 = getelementptr inbounds %class.D, %class.D* %this, i64 0, i32 1, !dbg !49
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store i32 %1, i32* %c23, align 4, !dbg !49
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%c3 = getelementptr inbounds %class.D, %class.D* %d, i64 0, i32 2, !dbg !50
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%2 = load i32, i32* %c3, align 4, !dbg !50
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%c34 = getelementptr inbounds %class.D, %class.D* %this, i64 0, i32 2, !dbg !50
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store i32 %2, i32* %c34, align 4, !dbg !50
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%c4 = getelementptr inbounds %class.D, %class.D* %d, i64 0, i32 3, !dbg !51
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%3 = load i32, i32* %c4, align 4, !dbg !51
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%c45 = getelementptr inbounds %class.D, %class.D* %this, i64 0, i32 3, !dbg !51
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store i32 %3, i32* %c45, align 4, !dbg !51
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ret void, !dbg !52
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}
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declare void @llvm.dbg.value(metadata, metadata, metadata) nounwind readnone
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!54}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.2 (trunk 167506) (llvm/trunk 167505)", isOptimized: true, emissionKind: FullDebug, file: !53, enums: !1, retainedTypes: !1, globals: !1, imports: !1)
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!1 = !{}
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!5 = distinct !DISubprogram(name: "D", linkageName: "_ZN1DC2Ev", line: 12, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 12, file: !6, scope: null, type: !7, declaration: !17, variables: !27)
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!6 = !DIFile(filename: "foo.cpp", directory: "/usr/local/google/home/echristo")
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!7 = !DISubroutineType(types: !8)
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!8 = !{null, !9}
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!9 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !10)
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!10 = !DICompositeType(tag: DW_TAG_class_type, name: "D", line: 1, size: 128, align: 32, file: !53, elements: !11)
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!11 = !{!12, !14, !15, !16, !17, !20}
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!12 = !DIDerivedType(tag: DW_TAG_member, name: "c1", line: 6, size: 32, align: 32, flags: DIFlagPrivate, file: !53, scope: !10, baseType: !13)
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!13 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!14 = !DIDerivedType(tag: DW_TAG_member, name: "c2", line: 7, size: 32, align: 32, offset: 32, flags: DIFlagPrivate, file: !53, scope: !10, baseType: !13)
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!15 = !DIDerivedType(tag: DW_TAG_member, name: "c3", line: 8, size: 32, align: 32, offset: 64, flags: DIFlagPrivate, file: !53, scope: !10, baseType: !13)
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!16 = !DIDerivedType(tag: DW_TAG_member, name: "c4", line: 9, size: 32, align: 32, offset: 96, flags: DIFlagPrivate, file: !53, scope: !10, baseType: !13)
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!17 = !DISubprogram(name: "D", line: 3, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 3, file: !6, scope: !10, type: !7)
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!20 = !DISubprogram(name: "D", line: 4, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 4, file: !6, scope: !10, type: !21)
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!21 = !DISubroutineType(types: !22)
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!22 = !{null, !9, !23}
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!23 = !DIDerivedType(tag: DW_TAG_reference_type, size: 64, align: 64, baseType: !24)
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!24 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !10)
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!27 = !{!29}
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!29 = !DILocalVariable(name: "this", line: 12, arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !5, file: !6, type: !30)
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!30 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !10)
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!31 = distinct !DISubprogram(name: "D", linkageName: "_ZN1DC2ERKS_", line: 19, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 19, file: !6, scope: null, type: !21, declaration: !20, variables: !32)
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!32 = !{!34, !35}
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!34 = !DILocalVariable(name: "this", line: 19, arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !31, file: !6, type: !30)
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!35 = !DILocalVariable(name: "d", line: 19, arg: 2, scope: !31, file: !6, type: !23)
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!36 = !DILocation(line: 12, scope: !5)
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!37 = !DILocation(line: 13, scope: !38)
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!38 = distinct !DILexicalBlock(line: 12, column: 0, file: !6, scope: !5)
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!42 = !DILocation(line: 14, scope: !38)
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!43 = !DILocation(line: 15, scope: !38)
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!44 = !DILocation(line: 16, scope: !38)
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!45 = !DILocation(line: 17, scope: !38)
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!46 = !DILocation(line: 19, scope: !31)
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!47 = !DILocation(line: 20, scope: !48)
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!48 = distinct !DILexicalBlock(line: 19, column: 0, file: !6, scope: !31)
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!49 = !DILocation(line: 21, scope: !48)
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!50 = !DILocation(line: 22, scope: !48)
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!51 = !DILocation(line: 23, scope: !48)
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!52 = !DILocation(line: 24, scope: !48)
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!53 = !DIFile(filename: "foo.cpp", directory: "/usr/local/google/home/echristo")
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!54 = !{i32 1, !"Debug Info Version", i32 3}
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