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a9fbb2813b
This patch reverses the edge from DIGlobalVariable to GlobalVariable. This will allow us to more easily preserve debug info metadata when manipulating global variables. Fixes PR30362. A program for upgrading test cases is attached to that bug. Differential Revision: http://reviews.llvm.org/D20147 llvm-svn: 281284
95 lines
4.9 KiB
LLVM
95 lines
4.9 KiB
LLVM
; RUN: llc -split-dwarf=Enable -O0 %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t
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; RUN: llvm-dwarfdump -debug-dump=all %t | FileCheck %s
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; RUN: llvm-readobj --relocations %t | FileCheck --check-prefix=CHECK-RELOCS %s
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; From:
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; class A {
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; public:
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; A(int i = 0) : a(i) {}
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; private:
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; int a;
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; };
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;
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; A a;
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; With function sections enabled make sure that we have a DW_AT_ranges attribute.
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; CHECK: DW_AT_ranges
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; Check that we have a relocation against the .debug_ranges section.
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; CHECK-RELOCS: R_X86_64_32 .debug_ranges 0x0
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%class.A = type { i32 }
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@a = global %class.A zeroinitializer, align 4, !dbg !22
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@llvm.global_ctors = appending global [1 x { i32, void ()* }] [{ i32, void ()* } { i32 65535, void ()* @_GLOBAL__I_a }]
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define internal void @__cxx_global_var_init() section ".text.startup" !dbg !14 {
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entry:
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call void @_ZN1AC2Ei(%class.A* @a, i32 0), !dbg !26
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ret void, !dbg !26
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}
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; Function Attrs: nounwind uwtable
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define linkonce_odr void @_ZN1AC2Ei(%class.A* %this, i32 %i) unnamed_addr #0 align 2 !dbg !18 {
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entry:
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%this.addr = alloca %class.A*, align 8
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%i.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 !27, metadata !DIExpression()), !dbg !29
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store i32 %i, i32* %i.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %i.addr, metadata !30, metadata !DIExpression()), !dbg !31
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%this1 = load %class.A*, %class.A** %this.addr
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%a = getelementptr inbounds %class.A, %class.A* %this1, i32 0, i32 0, !dbg !31
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%0 = load i32, i32* %i.addr, align 4, !dbg !31
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store i32 %0, i32* %a, align 4, !dbg !31
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ret void, !dbg !31
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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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define internal void @_GLOBAL__I_a() section ".text.startup" !dbg !19 {
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entry:
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call void @__cxx_global_var_init(), !dbg !32
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ret void, !dbg !32
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}
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attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!23, !24}
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!llvm.ident = !{!25}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5 (trunk 199923) (llvm/trunk 199940)", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !21, imports: !2)
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!1 = !DIFile(filename: "baz.cpp", directory: "/usr/local/google/home/echristo/tmp")
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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: 1, size: 32, align: 32, file: !1, elements: !5, identifier: "_ZTS1A")
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!5 = !{!6, !8}
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!6 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 5, size: 32, align: 32, flags: DIFlagPrivate, file: !1, scope: !4, baseType: !7)
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!7 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!8 = !DISubprogram(name: "A", line: 3, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 3, file: !1, scope: !4, type: !9)
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!9 = !DISubroutineType(types: !10)
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!10 = !{null, !11, !7}
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!11 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !4)
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!14 = distinct !DISubprogram(name: "__cxx_global_var_init", line: 8, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 8, file: !1, scope: !15, type: !16, variables: !2)
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!15 = !DIFile(filename: "baz.cpp", directory: "/usr/local/google/home/echristo/tmp")
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!16 = !DISubroutineType(types: !17)
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!17 = !{null}
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!18 = distinct !DISubprogram(name: "A", linkageName: "_ZN1AC2Ei", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 3, file: !1, scope: !4, type: !9, declaration: !8, variables: !2)
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!19 = distinct !DISubprogram(name: "", linkageName: "_GLOBAL__I_a", line: 3, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagArtificial, isOptimized: false, unit: !0, scopeLine: 3, file: !1, scope: !15, type: !20, variables: !2)
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!20 = !DISubroutineType(types: !2)
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!21 = !{!22}
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!22 = !DIGlobalVariable(name: "a", line: 8, isLocal: false, isDefinition: true, scope: null, file: !15, type: !4)
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!23 = !{i32 2, !"Dwarf Version", i32 4}
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!24 = !{i32 1, !"Debug Info Version", i32 3}
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!25 = !{!"clang version 3.5 (trunk 199923) (llvm/trunk 199940)"}
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!26 = !DILocation(line: 8, scope: !14)
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!27 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !18, type: !28)
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!28 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !4)
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!29 = !DILocation(line: 0, scope: !18)
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!30 = !DILocalVariable(name: "i", line: 3, arg: 2, scope: !18, file: !15, type: !7)
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!31 = !DILocation(line: 3, scope: !18)
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!32 = !DILocation(line: 3, scope: !19)
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