1 ; RUN: llc < %s -filetype=obj | llvm-readobj - -codeview | FileCheck %s 2 3 ; Both A and B should get forward declarations and complete definitions for this 4 ; example. 5 6 ; C++ source to regenerate: 7 ; $ cat t.cpp 8 ; struct B { int b; }; 9 ; struct A { B *b; }; 10 ; int f(A *p) { return p->b->b; } 11 ; $ clang t.cpp -S -emit-llvm -g -gcodeview -o t.ll 12 13 ; CHECK: CodeViewTypes [ 14 ; CHECK: Section: .debug$T (6) 15 ; CHECK: Magic: 0x4 16 ; CHECK: Struct (0x1000) { 17 ; CHECK: TypeLeafKind: LF_STRUCTURE (0x1505) 18 ; CHECK: MemberCount: 0 19 ; CHECK: Properties [ (0x280) 20 ; CHECK: ForwardReference (0x80) 21 ; CHECK: HasUniqueName (0x200) 22 ; CHECK: ] 23 ; CHECK: FieldList: 0x0 24 ; CHECK: DerivedFrom: 0x0 25 ; CHECK: VShape: 0x0 26 ; CHECK: SizeOf: 0 27 ; CHECK: Name: A 28 ; CHECK: LinkageName: .?AUA@@ 29 ; CHECK: } 30 ; CHECK: Pointer (0x1001) { 31 ; CHECK: TypeLeafKind: LF_POINTER (0x1002) 32 ; CHECK: PointeeType: A (0x1000) 33 ; CHECK: PointerAttributes: 0x1000C 34 ; CHECK: PtrType: Near64 (0xC) 35 ; CHECK: PtrMode: Pointer (0x0) 36 ; CHECK: IsFlat: 0 37 ; CHECK: IsConst: 0 38 ; CHECK: IsVolatile: 0 39 ; CHECK: IsUnaligned: 0 40 ; CHECK: SizeOf: 8 41 ; CHECK: } 42 ; CHECK: ArgList (0x1002) { 43 ; CHECK: TypeLeafKind: LF_ARGLIST (0x1201) 44 ; CHECK: NumArgs: 1 45 ; CHECK: Arguments [ 46 ; CHECK: ArgType: A* (0x1001) 47 ; CHECK: ] 48 ; CHECK: } 49 ; CHECK: Procedure (0x1003) { 50 ; CHECK: TypeLeafKind: LF_PROCEDURE (0x1008) 51 ; CHECK: ReturnType: int (0x74) 52 ; CHECK: CallingConvention: NearC (0x0) 53 ; CHECK: FunctionOptions [ (0x0) 54 ; CHECK: ] 55 ; CHECK: NumParameters: 1 56 ; CHECK: ArgListType: (A*) (0x1002) 57 ; CHECK: } 58 ; CHECK: Struct (0x1004) { 59 ; CHECK: TypeLeafKind: LF_STRUCTURE (0x1505) 60 ; CHECK: MemberCount: 0 61 ; CHECK: Properties [ (0x280) 62 ; CHECK: ForwardReference (0x80) 63 ; CHECK: HasUniqueName (0x200) 64 ; CHECK: ] 65 ; CHECK: FieldList: 0x0 66 ; CHECK: DerivedFrom: 0x0 67 ; CHECK: VShape: 0x0 68 ; CHECK: SizeOf: 0 69 ; CHECK: Name: B 70 ; CHECK: LinkageName: .?AUB@@ 71 ; CHECK: } 72 ; CHECK: Pointer (0x1005) { 73 ; CHECK: TypeLeafKind: LF_POINTER (0x1002) 74 ; CHECK: PointeeType: B (0x1004) 75 ; CHECK: PointerAttributes: 0x1000C 76 ; CHECK: PtrType: Near64 (0xC) 77 ; CHECK: PtrMode: Pointer (0x0) 78 ; CHECK: IsFlat: 0 79 ; CHECK: IsConst: 0 80 ; CHECK: IsVolatile: 0 81 ; CHECK: IsUnaligned: 0 82 ; CHECK: SizeOf: 8 83 ; CHECK: } 84 ; CHECK: FieldList (0x1006) { 85 ; CHECK: TypeLeafKind: LF_FIELDLIST (0x1203) 86 ; CHECK: DataMember { 87 ; CHECK: AccessSpecifier: Public (0x3) 88 ; CHECK: Type: B* (0x1005) 89 ; CHECK: FieldOffset: 0x0 90 ; CHECK: Name: b 91 ; CHECK: } 92 ; CHECK: } 93 ; CHECK: Struct (0x1007) { 94 ; CHECK: TypeLeafKind: LF_STRUCTURE (0x1505) 95 ; CHECK: MemberCount: 1 96 ; CHECK: Properties [ (0x200) 97 ; CHECK: HasUniqueName (0x200) 98 ; CHECK: ] 99 ; CHECK: FieldList: <field list> (0x1006) 100 ; CHECK: DerivedFrom: 0x0 101 ; CHECK: VShape: 0x0 102 ; CHECK: SizeOf: 8 103 ; CHECK: Name: A 104 ; CHECK: LinkageName: .?AUA@@ 105 ; CHECK: } 106 ; CHECK: StringId (0x1008) { 107 ; CHECK: TypeLeafKind: LF_STRING_ID (0x1605) 108 ; CHECK: Id: 0x0 109 ; CHECK: StringData: D:\src\llvm\build\t.cpp 110 ; CHECK: } 111 ; CHECK: UdtSourceLine (0x1009) { 112 ; CHECK: TypeLeafKind: LF_UDT_SRC_LINE (0x1606) 113 ; CHECK: UDT: A (0x1007) 114 ; CHECK: SourceFile: D:\src\llvm\build\t.cpp (0x1008) 115 ; CHECK: LineNumber: 2 116 ; CHECK: } 117 ; CHECK: FieldList (0x100A) { 118 ; CHECK: TypeLeafKind: LF_FIELDLIST (0x1203) 119 ; CHECK: DataMember { 120 ; CHECK: AccessSpecifier: Public (0x3) 121 ; CHECK: Type: int (0x74) 122 ; CHECK: FieldOffset: 0x0 123 ; CHECK: Name: b 124 ; CHECK: } 125 ; CHECK: } 126 ; CHECK: Struct (0x100B) { 127 ; CHECK: TypeLeafKind: LF_STRUCTURE (0x1505) 128 ; CHECK: MemberCount: 1 129 ; CHECK: Properties [ (0x200) 130 ; CHECK: HasUniqueName (0x200) 131 ; CHECK: ] 132 ; CHECK: FieldList: <field list> (0x100A) 133 ; CHECK: DerivedFrom: 0x0 134 ; CHECK: VShape: 0x0 135 ; CHECK: SizeOf: 4 136 ; CHECK: Name: B 137 ; CHECK: LinkageName: .?AUB@@ 138 ; CHECK: } 139 ; CHECK: UdtSourceLine (0x100C) { 140 ; CHECK: TypeLeafKind: LF_UDT_SRC_LINE (0x1606) 141 ; CHECK: UDT: B (0x100B) 142 ; CHECK: SourceFile: D:\src\llvm\build\t.cpp (0x1008) 143 ; CHECK: LineNumber: 1 144 ; CHECK: } 145 ; CHECK: FuncId (0x100D) { 146 ; CHECK: TypeLeafKind: LF_FUNC_ID (0x1601) 147 ; CHECK: ParentScope: 0x0 148 ; CHECK: FunctionType: int (A*) (0x1003) 149 ; CHECK: Name: f 150 ; CHECK: } 151 ; CHECK: ] 152 153 ; ModuleID = 't.cpp' 154 source_filename = "t.cpp" 155 target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128" 156 target triple = "x86_64-pc-windows-msvc19.0.23918" 157 158 %struct.A = type { %struct.B* } 159 %struct.B = type { i32 } 160 161 ; Function Attrs: nounwind uwtable 162 define i32 @"\01?f@@YAHPEAUA@@@Z"(%struct.A* %p) #0 !dbg !7 { 163 entry: 164 %p.addr = alloca %struct.A*, align 8 165 store %struct.A* %p, %struct.A** %p.addr, align 8 166 call void @llvm.dbg.declare(metadata %struct.A** %p.addr, metadata !19, metadata !20), !dbg !21 167 %0 = load %struct.A*, %struct.A** %p.addr, align 8, !dbg !22 168 %b = getelementptr inbounds %struct.A, %struct.A* %0, i32 0, i32 0, !dbg !23 169 %1 = load %struct.B*, %struct.B** %b, align 8, !dbg !23 170 %b1 = getelementptr inbounds %struct.B, %struct.B* %1, i32 0, i32 0, !dbg !24 171 %2 = load i32, i32* %b1, align 4, !dbg !24 172 ret i32 %2, !dbg !25 173 } 174 175 ; Function Attrs: nounwind readnone 176 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 177 178 attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } 179 attributes #1 = { nounwind readnone } 180 181 !llvm.dbg.cu = !{!0} 182 !llvm.module.flags = !{!3, !4, !5} 183 !llvm.ident = !{!6} 184 185 !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.9.0 ", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 186 !1 = !DIFile(filename: "t.cpp", directory: "D:\5Csrc\5Cllvm\5Cbuild") 187 !2 = !{} 188 !3 = !{i32 2, !"CodeView", i32 1} 189 !4 = !{i32 2, !"Debug Info Version", i32 3} 190 !5 = !{i32 1, !"PIC Level", i32 2} 191 !6 = !{!"clang version 3.9.0 "} 192 !7 = distinct !DISubprogram(name: "f", linkageName: "\01?f@@YAHPEAUA@@@Z", scope: !1, file: !1, line: 3, type: !8, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2) 193 !8 = !DISubroutineType(types: !9) 194 !9 = !{!10, !11} 195 !10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 196 !11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64, align: 64) 197 !12 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A", file: !1, line: 2, size: 64, align: 64, elements: !13, identifier: ".?AUA@@") 198 !13 = !{!14} 199 !14 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !12, file: !1, line: 2, baseType: !15, size: 64, align: 64) 200 !15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !16, size: 64, align: 64) 201 !16 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "B", file: !1, line: 1, size: 32, align: 32, elements: !17, identifier: ".?AUB@@") 202 !17 = !{!18} 203 !18 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !16, file: !1, line: 1, baseType: !10, size: 32, align: 32) 204 !19 = !DILocalVariable(name: "p", arg: 1, scope: !7, file: !1, line: 3, type: !11) 205 !20 = !DIExpression() 206 !21 = !DILocation(line: 3, column: 10, scope: !7) 207 !22 = !DILocation(line: 3, column: 22, scope: !7) 208 !23 = !DILocation(line: 3, column: 25, scope: !7) 209 !24 = !DILocation(line: 3, column: 28, scope: !7) 210 !25 = !DILocation(line: 3, column: 15, scope: !7) 211
