1; RUN: llc < %s -filetype=obj -o - | llvm-readobj - --codeview | FileCheck %s 2; RUN: llc < %s -o - | llvm-mc -filetype=obj --triple=x86_64-windows | llvm-readobj - --codeview | FileCheck %s 3 4; C++ source to regenerate: 5; $ cat t.cpp 6; struct A { int a; }; 7; struct B : virtual A { int b; virtual int get() { return b; } }; 8; struct C : virtual A { int c; virtual int get() { return c; } }; 9; struct D : B, C { 10; virtual void f(); // make vbptr not offset zero 11; int d; 12; }; 13; D d; 14; $ clang -fno-rtti -g -gcodeview t.cpp -emit-llvm -S -o t.ll -O1 15 16; struct B's field list comes first. 17; CHECK: FieldList ({{.*}}) { 18; CHECK-NEXT: TypeLeafKind: LF_FIELDLIST (0x1203) 19; CHECK-NEXT: VirtualBaseClass { 20; CHECK-NEXT: TypeLeafKind: LF_VBCLASS (0x1401) 21; CHECK-NEXT: AccessSpecifier: Public (0x3) 22; CHECK-NEXT: BaseType: A ({{.*}}) 23; CHECK-NEXT: VBPtrType: const int* ({{.*}}) 24; CHECK-NEXT: VBPtrOffset: 0x8 25; CHECK-NEXT: VBTableIndex: 0x1 26; CHECK-NEXT: } 27; CHECK: } 28 29; struct A's field list comes next. 30; CHECK: FieldList ({{.*}}) 31; CHECK-NEXT: TypeLeafKind: LF_FIELDLIST (0x1203) 32; CHECK: } 33 34; struct C's field list comes next. 35; CHECK: FieldList ({{.*}}) 36; CHECK-NEXT: TypeLeafKind: LF_FIELDLIST (0x1203) 37; CHECK-NEXT: VirtualBaseClass { 38; CHECK-NEXT: TypeLeafKind: LF_VBCLASS (0x1401) 39; CHECK-NEXT: AccessSpecifier: Public (0x3) 40; CHECK-NEXT: BaseType: A ({{.*}}) 41; CHECK-NEXT: VBPtrType: const int* ({{.*}}) 42; CHECK-NEXT: VBPtrOffset: 0x8 43; CHECK-NEXT: VBTableIndex: 0x1 44; CHECK-NEXT: } 45; CHECK: } 46 47; struct D's field list is last. 48; CHECK: FieldList ({{.*}}) { 49; CHECK-NEXT: TypeLeafKind: LF_FIELDLIST (0x1203) 50; CHECK-NEXT: BaseClass { 51; CHECK-NEXT: TypeLeafKind: LF_BCLASS (0x1400) 52; CHECK-NEXT: AccessSpecifier: Public (0x3) 53; CHECK-NEXT: BaseType: B ({{.*}}) 54; CHECK-NEXT: BaseOffset: 0x0 55; CHECK-NEXT: } 56; CHECK-NEXT: BaseClass { 57; CHECK-NEXT: TypeLeafKind: LF_BCLASS (0x1400) 58; CHECK-NEXT: AccessSpecifier: Public (0x3) 59; CHECK-NEXT: BaseType: C ({{.*}}) 60; CHECK-NEXT: BaseOffset: 0x18 61; CHECK-NEXT: } 62; CHECK-NEXT: IndirectVirtualBaseClass { 63; CHECK-NEXT: TypeLeafKind: LF_IVBCLASS (0x1402) 64; CHECK-NEXT: AccessSpecifier: Public (0x3) 65; CHECK-NEXT: BaseType: A ({{.*}}) 66; CHECK-NEXT: VBPtrType: const int* ({{.*}}) 67; CHECK-NEXT: VBPtrOffset: 0x8 68; CHECK-NEXT: VBTableIndex: 0x1 69; CHECK-NEXT: } 70; CHECK: } 71 72; ModuleID = 't.cpp' 73source_filename = "t.cpp" 74target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128" 75target triple = "x86_64-pc-windows-msvc19.12.25835" 76 77%struct.D = type { %struct.B.base, %struct.C.base, i32, [4 x i8], %struct.A } 78%struct.B.base = type { i32 (...)**, i32*, i32 } 79%struct.C.base = type { i32 (...)**, i32*, i32 } 80%struct.A = type { i32 } 81%struct.B = type { i32 (...)**, i32*, i32, [4 x i8], %struct.A } 82%struct.C = type { i32 (...)**, i32*, i32, [4 x i8], %struct.A } 83 84$"?get@B@@UEAAHXZ" = comdat any 85 86$"?get@C@@UEAAHXZ" = comdat any 87 88$"??_8D@@7BB@@@" = comdat any 89 90$"??_8D@@7BC@@@" = comdat any 91 92$"??_7D@@6BB@@@" = comdat any 93 94$"??_7D@@6BC@@@" = comdat any 95 96@"?d@@3UD@@A" = dso_local local_unnamed_addr global %struct.D { %struct.B.base { i32 (...)** bitcast ({ [2 x i8*] }* @"??_7D@@6BB@@@" to i32 (...)**), i32* getelementptr inbounds ([2 x i32], [2 x i32]* @"??_8D@@7BB@@@", i32 0, i32 0), i32 0 }, %struct.C.base { i32 (...)** bitcast ({ [1 x i8*] }* @"??_7D@@6BC@@@" to i32 (...)**), i32* getelementptr inbounds ([2 x i32], [2 x i32]* @"??_8D@@7BC@@@", i32 0, i32 0), i32 0 }, i32 0, [4 x i8] zeroinitializer, %struct.A zeroinitializer }, align 8, !dbg !0 97@"??_8D@@7BB@@@" = linkonce_odr unnamed_addr constant [2 x i32] [i32 -8, i32 48], comdat 98@"??_8D@@7BC@@@" = linkonce_odr unnamed_addr constant [2 x i32] [i32 -8, i32 24], comdat 99@"??_7D@@6BB@@@" = linkonce_odr unnamed_addr constant { [2 x i8*] } { [2 x i8*] [i8* bitcast (i32 (%struct.B*)* @"?get@B@@UEAAHXZ" to i8*), i8* bitcast (void (%struct.D*)* @"?f@D@@UEAAXXZ" to i8*)] }, comdat 100@"??_7D@@6BC@@@" = linkonce_odr unnamed_addr constant { [1 x i8*] } { [1 x i8*] [i8* bitcast (i32 (%struct.C*)* @"?get@C@@UEAAHXZ" to i8*)] }, comdat 101@llvm.global_ctors = appending global [0 x { i32, void ()*, i8* }] zeroinitializer 102 103; Function Attrs: nounwind uwtable 104define linkonce_odr dso_local i32 @"?get@B@@UEAAHXZ"(%struct.B* %this) unnamed_addr #0 comdat align 2 !dbg !46 { 105entry: 106 call void @llvm.dbg.value(metadata %struct.B* %this, metadata !48, metadata !DIExpression()), !dbg !50 107 %b = getelementptr inbounds %struct.B, %struct.B* %this, i64 0, i32 2, !dbg !51 108 %0 = load i32, i32* %b, align 8, !dbg !51, !tbaa !52 109 ret i32 %0, !dbg !51 110} 111 112declare dso_local void @"?f@D@@UEAAXXZ"(%struct.D*) unnamed_addr #1 113 114; Function Attrs: nounwind uwtable 115define linkonce_odr dso_local i32 @"?get@C@@UEAAHXZ"(%struct.C* %this) unnamed_addr #0 comdat align 2 !dbg !57 { 116entry: 117 call void @llvm.dbg.value(metadata %struct.C* %this, metadata !59, metadata !DIExpression()), !dbg !61 118 %c = getelementptr inbounds %struct.C, %struct.C* %this, i64 0, i32 2, !dbg !62 119 %0 = load i32, i32* %c, align 8, !dbg !62, !tbaa !63 120 ret i32 %0, !dbg !62 121} 122 123; Function Attrs: nounwind readnone speculatable 124declare void @llvm.dbg.value(metadata, metadata, metadata) #2 125 126attributes #0 = { nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "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" "no-signed-zeros-fp-math"="false" "no-trapping-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" } 127attributes #1 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-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" } 128attributes #2 = { nounwind readnone speculatable } 129 130!llvm.dbg.cu = !{!2} 131!llvm.module.flags = !{!41, !42, !43, !44} 132!llvm.ident = !{!45} 133 134!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) 135!1 = distinct !DIGlobalVariable(name: "d", linkageName: "?d@@3UD@@A", scope: !2, file: !3, line: 8, type: !6, isLocal: false, isDefinition: true) 136!2 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !3, producer: "clang version 7.0.0 (trunk)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5) 137!3 = !DIFile(filename: "t.cpp", directory: "C:\5CPath\5CTo\5CDirectory", checksumkind: CSK_MD5, checksum: "7477d4db6bf8a461a719bcaab9c6d65e") 138!4 = !{} 139!5 = !{!0} 140!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "D", file: !3, line: 4, size: 512, flags: DIFlagTypePassByReference, elements: !7, vtableHolder: !9, identifier: ".?AUD@@") 141!7 = !{!8, !24, !34, !35, !36, !37} 142!8 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !6, baseType: !9, extraData: i32 0) 143!9 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "B", file: !3, line: 2, size: 256, flags: DIFlagTypePassByReference, elements: !10, vtableHolder: !9, identifier: ".?AUB@@") 144!10 = !{!11, !16, !17, !19, !20} 145!11 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !9, baseType: !12, offset: 4, flags: DIFlagVirtual, extraData: i32 8) 146!12 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A", file: !3, line: 1, size: 32, flags: DIFlagTypePassByValue, elements: !13, identifier: ".?AUA@@") 147!13 = !{!14} 148!14 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !12, file: !3, line: 1, baseType: !15, size: 32) 149!15 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 150!16 = !DIDerivedType(tag: DW_TAG_pointer_type, name: "__vtbl_ptr_type", baseType: null, size: 64) 151!17 = !DIDerivedType(tag: DW_TAG_member, name: "_vptr$B", scope: !3, file: !3, baseType: !18, size: 64, flags: DIFlagArtificial) 152!18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !16, size: 64) 153!19 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !9, file: !3, line: 2, baseType: !15, size: 32, offset: 128) 154!20 = !DISubprogram(name: "get", linkageName: "?get@B@@UEAAHXZ", scope: !9, file: !3, line: 2, type: !21, isLocal: false, isDefinition: false, scopeLine: 2, containingType: !9, virtuality: DW_VIRTUALITY_virtual, virtualIndex: 0, flags: DIFlagPrototyped | DIFlagIntroducedVirtual, isOptimized: true) 155!21 = !DISubroutineType(types: !22) 156!22 = !{!15, !23} 157!23 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer) 158!24 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !6, baseType: !25, offset: 192, extraData: i32 0) 159!25 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "C", file: !3, line: 3, size: 256, flags: DIFlagTypePassByReference, elements: !26, vtableHolder: !25, identifier: ".?AUC@@") 160!26 = !{!27, !16, !28, !29, !30} 161!27 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !25, baseType: !12, offset: 4, flags: DIFlagVirtual, extraData: i32 8) 162!28 = !DIDerivedType(tag: DW_TAG_member, name: "_vptr$C", scope: !3, file: !3, baseType: !18, size: 64, flags: DIFlagArtificial) 163!29 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !25, file: !3, line: 3, baseType: !15, size: 32, offset: 128) 164!30 = !DISubprogram(name: "get", linkageName: "?get@C@@UEAAHXZ", scope: !25, file: !3, line: 3, type: !31, isLocal: false, isDefinition: false, scopeLine: 3, containingType: !25, virtuality: DW_VIRTUALITY_virtual, virtualIndex: 0, flags: DIFlagPrototyped | DIFlagIntroducedVirtual, isOptimized: true) 165!31 = !DISubroutineType(types: !32) 166!32 = !{!15, !33} 167!33 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !25, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer) 168!34 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !6, baseType: !12, offset: 4, flags: DIFlagIndirectVirtualBase, extraData: i32 8) 169!35 = !DIDerivedType(tag: DW_TAG_pointer_type, name: "__vtbl_ptr_type", baseType: null, size: 128) 170!36 = !DIDerivedType(tag: DW_TAG_member, name: "d", scope: !6, file: !3, line: 6, baseType: !15, size: 32, offset: 384) 171!37 = !DISubprogram(name: "f", linkageName: "?f@D@@UEAAXXZ", scope: !6, file: !3, line: 5, type: !38, isLocal: false, isDefinition: false, scopeLine: 5, containingType: !6, virtuality: DW_VIRTUALITY_virtual, virtualIndex: 1, flags: DIFlagPrototyped | DIFlagIntroducedVirtual, isOptimized: true) 172!38 = !DISubroutineType(types: !39) 173!39 = !{null, !40} 174!40 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !6, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer) 175!41 = !{i32 2, !"CodeView", i32 1} 176!42 = !{i32 2, !"Debug Info Version", i32 3} 177!43 = !{i32 1, !"wchar_size", i32 2} 178!44 = !{i32 7, !"PIC Level", i32 2} 179!45 = !{!"clang version 7.0.0 (trunk)"} 180!46 = distinct !DISubprogram(name: "get", linkageName: "?get@B@@UEAAHXZ", scope: !9, file: !3, line: 2, type: !21, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !2, declaration: !20, retainedNodes: !47) 181!47 = !{!48} 182!48 = !DILocalVariable(name: "this", arg: 1, scope: !46, type: !49, flags: DIFlagArtificial | DIFlagObjectPointer) 183!49 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64) 184!50 = !DILocation(line: 0, scope: !46) 185!51 = !DILocation(line: 2, scope: !46) 186!52 = !{!53, !54, i64 16} 187!53 = !{!"?AUB@@", !54, i64 16} 188!54 = !{!"int", !55, i64 0} 189!55 = !{!"omnipotent char", !56, i64 0} 190!56 = !{!"Simple C++ TBAA"} 191!57 = distinct !DISubprogram(name: "get", linkageName: "?get@C@@UEAAHXZ", scope: !25, file: !3, line: 3, type: !31, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !2, declaration: !30, retainedNodes: !58) 192!58 = !{!59} 193!59 = !DILocalVariable(name: "this", arg: 1, scope: !57, type: !60, flags: DIFlagArtificial | DIFlagObjectPointer) 194!60 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !25, size: 64) 195!61 = !DILocation(line: 0, scope: !57) 196!62 = !DILocation(line: 3, scope: !57) 197!63 = !{!64, !54, i64 16} 198!64 = !{!"?AUC@@", !54, i64 16} 199