1 ; REQUIRES: object-emission 2 3 ; RUN: llc -mtriple x86_64-pc-linux -O0 -filetype=obj %s -o %t 4 ; RUN: llvm-dwarfdump %t | FileCheck %s 5 6 ; Testcase from: 7 ; struct base { 8 ; virtual ~base(); 9 ; }; 10 ; typedef base base_type; 11 ; struct foo { 12 ; base_type b; 13 ; }; 14 ; foo f; 15 16 ; Where member b should be seen as a field at an offset and not a bitfield. 17 18 ; CHECK: DW_TAG_member 19 ; CHECK: DW_AT_name{{.*}}"b" 20 ; CHECK-NOT: DW_AT_bit_offset 21 22 %struct.foo = type { %struct.base } 23 %struct.base = type { i32 (...)** } 24 25 $_ZN3fooC2Ev = comdat any 26 27 $_ZN3fooD2Ev = comdat any 28 29 $_ZN4baseC2Ev = comdat any 30 31 @f = global %struct.foo zeroinitializer, align 8 32 @__dso_handle = external global i8 33 @_ZTV4base = external unnamed_addr constant [4 x i8*] 34 @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 }] 35 36 define internal void @__cxx_global_var_init() section ".text.startup" { 37 entry: 38 call void @_ZN3fooC2Ev(%struct.foo* @f) #2, !dbg !33 39 %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 40 ret void, !dbg !33 41 } 42 43 ; Function Attrs: inlinehint nounwind uwtable 44 define linkonce_odr void @_ZN3fooC2Ev(%struct.foo* %this) unnamed_addr #0 comdat align 2 { 45 entry: 46 %this.addr = alloca %struct.foo*, align 8 47 store %struct.foo* %this, %struct.foo** %this.addr, align 8 48 call void @llvm.dbg.declare(metadata %struct.foo** %this.addr, metadata !34, metadata !36), !dbg !37 49 %this1 = load %struct.foo*, %struct.foo** %this.addr 50 %b = getelementptr inbounds %struct.foo, %struct.foo* %this1, i32 0, i32 0, !dbg !38 51 call void @_ZN4baseC2Ev(%struct.base* %b) #2, !dbg !38 52 ret void, !dbg !38 53 } 54 55 ; Function Attrs: inlinehint uwtable 56 define linkonce_odr void @_ZN3fooD2Ev(%struct.foo* %this) unnamed_addr #1 comdat align 2 { 57 entry: 58 %this.addr = alloca %struct.foo*, align 8 59 store %struct.foo* %this, %struct.foo** %this.addr, align 8 60 call void @llvm.dbg.declare(metadata %struct.foo** %this.addr, metadata !39, metadata !36), !dbg !40 61 %this1 = load %struct.foo*, %struct.foo** %this.addr 62 %b = getelementptr inbounds %struct.foo, %struct.foo* %this1, i32 0, i32 0, !dbg !41 63 call void @_ZN4baseD1Ev(%struct.base* %b), !dbg !41 64 ret void, !dbg !43 65 } 66 67 ; Function Attrs: nounwind 68 declare i32 @__cxa_atexit(void (i8*)*, i8*, i8*) #2 69 70 ; Function Attrs: nounwind readnone 71 declare void @llvm.dbg.declare(metadata, metadata, metadata) #3 72 73 ; Function Attrs: inlinehint nounwind uwtable 74 define linkonce_odr void @_ZN4baseC2Ev(%struct.base* %this) unnamed_addr #0 comdat align 2 { 75 entry: 76 %this.addr = alloca %struct.base*, align 8 77 store %struct.base* %this, %struct.base** %this.addr, align 8 78 call void @llvm.dbg.declare(metadata %struct.base** %this.addr, metadata !44, metadata !36), !dbg !46 79 %this1 = load %struct.base*, %struct.base** %this.addr 80 %0 = bitcast %struct.base* %this1 to i32 (...)***, !dbg !47 81 store i32 (...)** bitcast (i8** getelementptr inbounds ([4 x i8*], [4 x i8*]* @_ZTV4base, i64 0, i64 2) to i32 (...)**), i32 (...)*** %0, !dbg !47 82 ret void, !dbg !47 83 } 84 85 declare void @_ZN4baseD1Ev(%struct.base*) #4 86 87 define internal void @_GLOBAL__sub_I_decl_derived_member.cpp() section ".text.startup" { 88 entry: 89 call void @__cxx_global_var_init(), !dbg !48 90 ret void 91 } 92 93 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" } 94 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" } 95 attributes #2 = { nounwind } 96 attributes #3 = { nounwind readnone } 97 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" } 98 99 !llvm.dbg.cu = !{!0} 100 !llvm.module.flags = !{!30, !31} 101 !llvm.ident = !{!32} 102 103 !0 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.7.0 (trunk 227104) (llvm/trunk 227103)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !9, globals: !28, imports: !2) 104 !1 = !MDFile(filename: "decl-derived-member.cpp", directory: "/tmp/dbginfo") 105 !2 = !{} 106 !3 = !{!4, !8} 107 !4 = !MDCompositeType(tag: DW_TAG_structure_type, name: "foo", line: 5, size: 64, align: 64, file: !1, elements: !5, identifier: "_ZTS3foo") 108 !5 = !{!6} 109 !6 = !MDDerivedType(tag: DW_TAG_member, name: "b", line: 6, size: 64, align: 64, file: !1, scope: !"_ZTS3foo", baseType: !7) 110 !7 = !MDDerivedType(tag: DW_TAG_typedef, name: "base_type", line: 4, file: !1, baseType: !"_ZTS4base") 111 !8 = !MDCompositeType(tag: DW_TAG_structure_type, name: "base", line: 1, flags: DIFlagFwdDecl, file: !1, identifier: "_ZTS4base") 112 !9 = !{!10, !14, !19, !24, !26} 113 !10 = !MDSubprogram(name: "__cxx_global_var_init", line: 8, isLocal: true, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 8, file: !1, scope: !11, type: !12, function: void ()* @__cxx_global_var_init, variables: !2) 114 !11 = !MDFile(filename: "decl-derived-member.cpp", directory: "/tmp/dbginfo") 115 !12 = !MDSubroutineType(types: !13) 116 !13 = !{null} 117 !14 = !MDSubprogram(name: "foo", linkageName: "_ZN3fooC2Ev", line: 5, isLocal: false, isDefinition: true, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scopeLine: 5, file: !1, scope: !"_ZTS3foo", type: !15, function: void (%struct.foo*)* @_ZN3fooC2Ev, declaration: !18, variables: !2) 118 !15 = !MDSubroutineType(types: !16) 119 !16 = !{null, !17} 120 !17 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !"_ZTS3foo") 121 !18 = !MDSubprogram(name: "foo", isLocal: false, isDefinition: false, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scope: !"_ZTS3foo", type: !15) 122 !19 = !MDSubprogram(name: "base", linkageName: "_ZN4baseC2Ev", line: 1, isLocal: false, isDefinition: true, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scopeLine: 1, file: !1, scope: !"_ZTS4base", type: !20, function: void (%struct.base*)* @_ZN4baseC2Ev, declaration: !23, variables: !2) 123 !20 = !MDSubroutineType(types: !21) 124 !21 = !{null, !22} 125 !22 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !"_ZTS4base") 126 !23 = !MDSubprogram(name: "base", isLocal: false, isDefinition: false, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scope: !"_ZTS4base", type: !20) 127 !24 = !MDSubprogram(name: "~foo", linkageName: "_ZN3fooD2Ev", line: 5, isLocal: false, isDefinition: true, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scopeLine: 5, file: !1, scope: !"_ZTS3foo", type: !15, function: void (%struct.foo*)* @_ZN3fooD2Ev, declaration: !25, variables: !2) 128 !25 = !MDSubprogram(name: "~foo", isLocal: false, isDefinition: false, flags: DIFlagArtificial | DIFlagPrototyped, isOptimized: false, scope: !"_ZTS3foo", type: !15) 129 !26 = !MDSubprogram(name: "", linkageName: "_GLOBAL__sub_I_decl_derived_member.cpp", isLocal: true, isDefinition: true, flags: DIFlagArtificial, isOptimized: false, file: !1, scope: !11, type: !27, function: void ()* @_GLOBAL__sub_I_decl_derived_member.cpp, variables: !2) 130 !27 = !MDSubroutineType(types: !2) 131 !28 = !{!29} 132 !29 = !MDGlobalVariable(name: "f", line: 8, isLocal: false, isDefinition: true, scope: null, file: !11, type: !"_ZTS3foo", variable: %struct.foo* @f) 133 !30 = !{i32 2, !"Dwarf Version", i32 4} 134 !31 = !{i32 2, !"Debug Info Version", i32 3} 135 !32 = !{!"clang version 3.7.0 (trunk 227104) (llvm/trunk 227103)"} 136 !33 = !MDLocation(line: 8, column: 5, scope: !10) 137 !34 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !14, type: !35) 138 !35 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !"_ZTS3foo") 139 !36 = !MDExpression() 140 !37 = !MDLocation(line: 0, scope: !14) 141 !38 = !MDLocation(line: 5, column: 8, scope: !14) 142 !39 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !24, type: !35) 143 !40 = !MDLocation(line: 0, scope: !24) 144 !41 = !MDLocation(line: 5, column: 8, scope: !42) 145 !42 = distinct !MDLexicalBlock(line: 5, column: 8, file: !1, scope: !24) 146 !43 = !MDLocation(line: 5, column: 8, scope: !24) 147 !44 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !19, type: !45) 148 !45 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !"_ZTS4base") 149 !46 = !MDLocation(line: 0, scope: !19) 150 !47 = !MDLocation(line: 1, column: 8, scope: !19) 151 !48 = !MDLocation(line: 0, scope: !26) 152
