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7d6813a6c8
This change simplifies code that has to deal with DIGlobalVariableExpression and mirrors how we treat DIExpressions in debug info intrinsics. Before this change there were two ways of representing empty expressions on globals, a nullptr and an empty !DIExpression(). If someone needs to upgrade out-of-tree testcases: perl -pi -e 's/(!DIGlobalVariableExpression\(var: ![0-9]*)\)/\1, expr: !DIExpression())/g' <MYTEST.ll> will catch 95%. llvm-svn: 312144
62 lines
3.0 KiB
LLVM
62 lines
3.0 KiB
LLVM
; RUN: llc -mtriple=x86_64-macosx %s -o %t -filetype=obj
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; RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck %s
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; CHECK: DW_TAG_subprogram [9] *
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; CHECK-NOT: DW_AT_{{(MIPS_)?}}linkage_name
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; CHECK: DW_AT_specification
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source_filename = "test/DebugInfo/X86/linkage-name.ll"
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%class.A = type { i8 }
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@a = global %class.A zeroinitializer, align 1, !dbg !0
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; Function Attrs: nounwind ssp uwtable
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define i32 @_ZN1A1aEi(%class.A* %this, i32 %b) #0 align 2 !dbg !14 {
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entry:
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%this.addr = alloca %class.A*, align 8
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%b.addr = alloca i32, align 4
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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 !15, metadata !17), !dbg !18
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store i32 %b, i32* %b.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %b.addr, metadata !19, metadata !17), !dbg !20
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%this1 = load %class.A*, %class.A** %this.addr
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%0 = load i32, i32* %b.addr, align 4, !dbg !21
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ret i32 %0, !dbg !21
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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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attributes #0 = { nounwind ssp uwtable }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!10}
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!llvm.module.flags = !{!13}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = !DIGlobalVariable(name: "a", scope: null, file: !2, line: 9, type: !3, isLocal: false, isDefinition: true)
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!2 = !DIFile(filename: "foo.cpp", directory: "/Users/echristo")
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!3 = !DICompositeType(tag: DW_TAG_class_type, name: "A", file: !2, line: 1, size: 8, align: 8, elements: !4)
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!4 = !{!5}
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!5 = !DISubprogram(name: "a", linkageName: "_ZN1A1aEi", scope: !3, file: !2, line: 2, type: !6, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrivate | DIFlagPrototyped, isOptimized: false)
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!6 = !DISubroutineType(types: !7)
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!7 = !{!8, !9, !8}
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!8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !3, size: 64, align: 64, flags: DIFlagArtificial)
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!10 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !2, producer: "clang version 3.1 (trunk 152691) (llvm/trunk 152692)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !11, retainedTypes: !11, globals: !12, imports: !11)
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!11 = !{}
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!12 = !{!0}
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!13 = !{i32 1, !"Debug Info Version", i32 3}
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!14 = distinct !DISubprogram(name: "a", linkageName: "_ZN1A1aEi", scope: null, file: !2, line: 5, type: !6, isLocal: false, isDefinition: true, scopeLine: 5, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !10, declaration: !5)
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!15 = !DILocalVariable(name: "this", arg: 1, scope: !14, file: !2, line: 5, type: !16, flags: DIFlagArtificial)
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!16 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !3, size: 64, align: 64)
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!17 = !DIExpression()
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!18 = !DILocation(line: 5, column: 8, scope: !14)
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!19 = !DILocalVariable(name: "b", arg: 2, scope: !14, file: !2, line: 5, type: !8)
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!20 = !DILocation(line: 5, column: 14, scope: !14)
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!21 = !DILocation(line: 6, column: 4, scope: !22)
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!22 = distinct !DILexicalBlock(scope: !14, file: !2, line: 5, column: 17)
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