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151 lines
8.6 KiB
151 lines
8.6 KiB
; REQUIRES: object-emission
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; RUN: llc -mtriple x86_64-pc-linux -O0 -filetype=obj %s -o %t
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; RUN: llvm-dwarfdump %t | FileCheck %s
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; Testcase from:
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; struct base {
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; virtual ~base();
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; };
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; typedef base base_type;
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; struct foo {
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; base_type b;
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; };
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; foo f;
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; Where member b should be seen as a field at an offset and not a bitfield.
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; CHECK: DW_TAG_member
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; CHECK: DW_AT_name{{.*}}"b"
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; CHECK-NOT: DW_AT_bit_offset
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%struct.foo = type { %struct.base }
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%struct.base = type { i32 (...)** }
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$_ZN3fooC2Ev = comdat any
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$_ZN3fooD2Ev = comdat any
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$_ZN4baseC2Ev = comdat any
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@f = global %struct.foo zeroinitializer, align 8
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@__dso_handle = external global i8
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@_ZTV4base = external unnamed_addr constant [4 x i8*]
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@llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 65535, void ()* @_GLOBAL__sub_I_decl_derived_member.cpp, i8* null }]
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define internal void @__cxx_global_var_init() section ".text.startup" !dbg !10 {
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entry:
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call void @_ZN3fooC2Ev(%struct.foo* @f) #2, !dbg !33
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%0 = call i32 @__cxa_atexit(void (i8*)* bitcast (void (%struct.foo*)* @_ZN3fooD2Ev to void (i8*)*), i8* bitcast (%struct.foo* @f to i8*), i8* @__dso_handle) #2, !dbg !33
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ret void, !dbg !33
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}
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; Function Attrs: inlinehint nounwind uwtable
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define linkonce_odr void @_ZN3fooC2Ev(%struct.foo* %this) unnamed_addr #0 comdat align 2 !dbg !14 {
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entry:
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%this.addr = alloca %struct.foo*, align 8
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store %struct.foo* %this, %struct.foo** %this.addr, align 8
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call void @llvm.dbg.declare(metadata %struct.foo** %this.addr, metadata !34, metadata !36), !dbg !37
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%this1 = load %struct.foo*, %struct.foo** %this.addr
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%b = getelementptr inbounds %struct.foo, %struct.foo* %this1, i32 0, i32 0, !dbg !38
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call void @_ZN4baseC2Ev(%struct.base* %b) #2, !dbg !38
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ret void, !dbg !38
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}
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; Function Attrs: inlinehint uwtable
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define linkonce_odr void @_ZN3fooD2Ev(%struct.foo* %this) unnamed_addr #1 comdat align 2 !dbg !24 {
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entry:
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%this.addr = alloca %struct.foo*, align 8
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store %struct.foo* %this, %struct.foo** %this.addr, align 8
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call void @llvm.dbg.declare(metadata %struct.foo** %this.addr, metadata !39, metadata !36), !dbg !40
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%this1 = load %struct.foo*, %struct.foo** %this.addr
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%b = getelementptr inbounds %struct.foo, %struct.foo* %this1, i32 0, i32 0, !dbg !41
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call void @_ZN4baseD1Ev(%struct.base* %b), !dbg !41
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ret void, !dbg !43
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}
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; Function Attrs: nounwind
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declare i32 @__cxa_atexit(void (i8*)*, i8*, i8*) #2
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #3
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; Function Attrs: inlinehint nounwind uwtable
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define linkonce_odr void @_ZN4baseC2Ev(%struct.base* %this) unnamed_addr #0 comdat align 2 !dbg !19 {
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entry:
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%this.addr = alloca %struct.base*, align 8
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store %struct.base* %this, %struct.base** %this.addr, align 8
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call void @llvm.dbg.declare(metadata %struct.base** %this.addr, metadata !44, metadata !36), !dbg !46
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%this1 = load %struct.base*, %struct.base** %this.addr
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%0 = bitcast %struct.base* %this1 to i32 (...)***, !dbg !47
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store i32 (...)** bitcast (i8** getelementptr inbounds ([4 x i8*], [4 x i8*]* @_ZTV4base, i64 0, i64 2) to i32 (...)**), i32 (...)*** %0, !dbg !47
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ret void, !dbg !47
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}
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declare void @_ZN4baseD1Ev(%struct.base*) #4
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define internal void @_GLOBAL__sub_I_decl_derived_member.cpp() section ".text.startup" {
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entry:
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call void @__cxx_global_var_init(), !dbg !48
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ret void
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}
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attributes #0 = { inlinehint 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 = { inlinehint 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 #2 = { nounwind }
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attributes #3 = { nounwind readnone }
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attributes #4 = { "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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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!30, !31}
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!llvm.ident = !{!32}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.7.0 (trunk 227104) (llvm/trunk 227103)", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !3, globals: !28, imports: !2)
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!1 = !DIFile(filename: "decl-derived-member.cpp", directory: "/tmp/dbginfo")
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!2 = !{}
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!3 = !{!4, !8}
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!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "foo", line: 5, size: 64, align: 64, file: !1, elements: !5, identifier: "_ZTS3foo")
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!5 = !{!6}
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!6 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 6, size: 64, align: 64, file: !1, scope: !4, baseType: !7)
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!7 = !DIDerivedType(tag: DW_TAG_typedef, name: "base_type", line: 4, file: !1, baseType: !8)
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!8 = !DICompositeType(tag: DW_TAG_structure_type, name: "base", line: 1, flags: DIFlagFwdDecl, file: !1, identifier: "_ZTS4base")
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!10 = distinct !DISubprogram(name: "__cxx_global_var_init", line: 8, isLocal: true, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 8, file: !1, scope: !11, type: !12, variables: !2)
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!11 = !DIFile(filename: "decl-derived-member.cpp", directory: "/tmp/dbginfo")
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!12 = !DISubroutineType(types: !13)
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!13 = !{null}
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!14 = distinct !DISubprogram(name: "foo", linkageName: "_ZN3fooC2Ev", line: 5, isLocal: false, isDefinition: true, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 5, file: !1, scope: !4, type: !15, declaration: !18, variables: !2)
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!15 = !DISubroutineType(types: !16)
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!16 = !{null, !17}
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!17 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !4)
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!18 = !DISubprogram(name: "foo", isLocal: false, isDefinition: false, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scope: !4, type: !15)
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!19 = distinct !DISubprogram(name: "base", linkageName: "_ZN4baseC2Ev", line: 1, isLocal: false, isDefinition: true, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !8, type: !20, declaration: !23, variables: !2)
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!20 = !DISubroutineType(types: !21)
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!21 = !{null, !22}
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!22 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !8)
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!23 = !DISubprogram(name: "base", isLocal: false, isDefinition: false, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scope: !8, type: !20)
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!24 = distinct !DISubprogram(name: "~foo", linkageName: "_ZN3fooD2Ev", line: 5, isLocal: false, isDefinition: true, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 5, file: !1, scope: !4, type: !15, declaration: !25, variables: !2)
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!25 = !DISubprogram(name: "~foo", isLocal: false, isDefinition: false, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scope: !4, type: !15)
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!26 = distinct !DISubprogram(name: "", linkageName: "_GLOBAL__sub_I_decl_derived_member.cpp", isLocal: true, isDefinition: true, flags: DIFlagArtificial, isOptimized: false, unit: !0, file: !1, scope: !11, type: !27, variables: !2)
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!27 = !DISubroutineType(types: !2)
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!28 = !{!29}
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!29 = !DIGlobalVariable(name: "f", line: 8, isLocal: false, isDefinition: true, scope: null, file: !11, type: !4, variable: %struct.foo* @f)
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!30 = !{i32 2, !"Dwarf Version", i32 4}
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!31 = !{i32 2, !"Debug Info Version", i32 3}
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!32 = !{!"clang version 3.7.0 (trunk 227104) (llvm/trunk 227103)"}
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!33 = !DILocation(line: 8, column: 5, scope: !10)
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!34 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !14, type: !35)
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!35 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !4)
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!36 = !DIExpression()
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!37 = !DILocation(line: 0, scope: !14)
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!38 = !DILocation(line: 5, column: 8, scope: !14)
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!39 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !24, type: !35)
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!40 = !DILocation(line: 0, scope: !24)
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!41 = !DILocation(line: 5, column: 8, scope: !42)
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!42 = distinct !DILexicalBlock(line: 5, column: 8, file: !1, scope: !24)
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!43 = !DILocation(line: 5, column: 8, scope: !24)
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!44 = !DILocalVariable(name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !19, type: !45)
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!45 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !8)
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!46 = !DILocation(line: 0, scope: !19)
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!47 = !DILocation(line: 1, column: 8, scope: !19)
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!48 = !DILocation(line: 0, scope: !26)
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