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de7484036b
Eliminate DITypeIdentifierMap and make DITypeRef a thin wrapper around DIType*. It is no longer legal to refer to a DICompositeType by its 'identifier:', and DIBuilder no longer retains all types with an 'identifier:' automatically. Aside from the bitcode upgrade, this is mainly removing logic to resolve an MDString-based reference to an actualy DIType. The commits leading up to this have made the implicit type map in DICompileUnit's 'retainedTypes:' field superfluous. This does not remove DITypeRef, DIScopeRef, DINodeRef, and DITypeRefArray, or stop using them in DI-related metadata. Although as of this commit they aren't serving a useful purpose, there are patchces under review to reuse them for CodeView support. The tests in LLVM were updated with deref-typerefs.sh, which is attached to the thread "[RFC] Lazy-loading of debug info metadata": http://lists.llvm.org/pipermail/llvm-dev/2016-April/098318.html git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@267296 91177308-0d34-0410-b5e6-96231b3b80d8
85 lines
3.8 KiB
LLVM
85 lines
3.8 KiB
LLVM
; RUN: true
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; This file belongs to type-unique-odr-a.ll.
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;
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; Test ODR-based type uniquing for C++ class members.
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; rdar://problem/15851313.
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;
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; $ cat -n type-unique-odr-b.cpp
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; 1 // Make this declaration start on a different line.
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; 2 class A {
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; 3 int data;
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; 4 protected:
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; 5 void getFoo();
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; 6 };
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; 7
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; 8 void A::getFoo() {}
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; 9
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; 10 static void bar() {}
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; 11 void f() { bar(); };
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; ModuleID = 'type-unique-odr-b.cpp'
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%class.A = type { i32 }
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; Function Attrs: nounwind
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define void @_ZN1A6getFooEv(%class.A* %this) #0 align 2 !dbg !15 {
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entry:
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%this.addr = alloca %class.A*, align 8
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store %class.A* %this, %class.A** %this.addr, align 8
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call void @llvm.dbg.declare(metadata %class.A** %this.addr, metadata !24, metadata !DIExpression()), !dbg !26
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%this1 = load %class.A*, %class.A** %this.addr
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ret void, !dbg !27
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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; Function Attrs: nounwind
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define void @_Z1fv() #0 !dbg !16 {
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entry:
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call void @_ZL3barv(), !dbg !28
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ret void, !dbg !28
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}
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; Function Attrs: nounwind
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define internal void @_ZL3barv() #0 !dbg !20 {
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entry:
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ret void, !dbg !29
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}
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attributes #0 = { nounwind }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!21, !22}
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!llvm.ident = !{!23}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !2, imports: !2)
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!1 = !DIFile(filename: "<unknown>", directory: "")
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!2 = !{}
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!3 = !{!4}
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!4 = !DICompositeType(tag: DW_TAG_class_type, name: "A", line: 2, size: 32, align: 32, file: !5, elements: !6, identifier: "_ZTS1A")
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!5 = !DIFile(filename: "type-unique-odr-b.cpp", directory: "")
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!6 = !{!7, !9}
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!7 = !DIDerivedType(tag: DW_TAG_member, name: "data", line: 3, size: 32, align: 32, flags: DIFlagPrivate, file: !5, scope: !4, baseType: !8)
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!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!9 = !DISubprogram(name: "getFoo", linkageName: "_ZN1A6getFooEv", line: 5, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagProtected | DIFlagPrototyped, isOptimized: false, scopeLine: 5, file: !5, scope: !4, type: !10)
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!10 = !DISubroutineType(types: !11)
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!11 = !{null, !12}
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!12 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !4)
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!15 = distinct !DISubprogram(name: "getFoo", linkageName: "_ZN1A6getFooEv", line: 8, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 8, file: !5, scope: !4, type: !10, declaration: !9, variables: !2)
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!16 = distinct !DISubprogram(name: "f", linkageName: "_Z1fv", line: 11, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 11, file: !5, scope: !17, type: !18, variables: !2)
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!17 = !DIFile(filename: "type-unique-odr-b.cpp", directory: "")
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!18 = !DISubroutineType(types: !19)
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!19 = !{null}
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!20 = distinct !DISubprogram(name: "bar", linkageName: "_ZL3barv", line: 10, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 10, file: !5, scope: !17, type: !18, variables: !2)
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!21 = !{i32 2, !"Dwarf Version", i32 4}
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!22 = !{i32 1, !"Debug Info Version", i32 3}
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!23 = !{!"clang version 3.5.0 "}
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!24 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !15, type: !25)
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!25 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !4)
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!26 = !DILocation(line: 0, scope: !15)
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!27 = !DILocation(line: 8, scope: !15)
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!28 = !DILocation(line: 11, scope: !16)
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!29 = !DILocation(line: 10, scope: !20)
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