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1; RUN: llc < %s -filetype=obj -o - | llvm-readobj - --codeview | FileCheck %s2; RUN: llc < %s -o - | llvm-mc -filetype=obj --triple=x86_64-windows | llvm-readobj - --codeview | FileCheck %s3 4; C++ source to regenerate:5; $ cat t.cpp6; 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 zero11; int d;12; };13; D d;14; $ clang -fno-rtti -g -gcodeview t.cpp -emit-llvm -S -o t.ll -O115 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: 0x825; CHECK-NEXT: VBTableIndex: 0x126; 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: 0x843; CHECK-NEXT: VBTableIndex: 0x144; 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: 0x055; 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: 0x1861; 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: 0x868; CHECK-NEXT: VBTableIndex: 0x169; 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 { ptr, ptr, i32 }79%struct.C.base = type { ptr, ptr, i32 }80%struct.A = type { i32 }81%struct.B = type { ptr, ptr, i32, [4 x i8], %struct.A }82%struct.C = type { ptr, ptr, i32, [4 x i8], %struct.A }83 84$"?get@B@@UEAAHXZ" = comdat any85 86$"?get@C@@UEAAHXZ" = comdat any87 88$"??_8D@@7BB@@@" = comdat any89 90$"??_8D@@7BC@@@" = comdat any91 92$"??_7D@@6BB@@@" = comdat any93 94$"??_7D@@6BC@@@" = comdat any95 96@"?d@@3UD@@A" = dso_local local_unnamed_addr global %struct.D { %struct.B.base { ptr @"??_7D@@6BB@@@", ptr @"??_8D@@7BB@@@", i32 0 }, %struct.C.base { ptr @"??_7D@@6BC@@@", ptr @"??_8D@@7BC@@@", i32 0 }, i32 0, [4 x i8] zeroinitializer, %struct.A zeroinitializer }, align 8, !dbg !097@"??_8D@@7BB@@@" = linkonce_odr unnamed_addr constant [2 x i32] [i32 -8, i32 48], comdat98@"??_8D@@7BC@@@" = linkonce_odr unnamed_addr constant [2 x i32] [i32 -8, i32 24], comdat99@"??_7D@@6BB@@@" = linkonce_odr unnamed_addr constant { [2 x ptr] } { [2 x ptr] [ptr @"?get@B@@UEAAHXZ", ptr @"?f@D@@UEAAXXZ"] }, comdat100@"??_7D@@6BC@@@" = linkonce_odr unnamed_addr constant { [1 x ptr] } { [1 x ptr] [ptr @"?get@C@@UEAAHXZ"] }, comdat101@llvm.global_ctors = appending global [0 x { i32, ptr, ptr }] zeroinitializer102 103; Function Attrs: nounwind uwtable104define linkonce_odr dso_local i32 @"?get@B@@UEAAHXZ"(ptr %this) unnamed_addr #0 comdat align 2 !dbg !46 {105entry:106 call void @llvm.dbg.value(metadata ptr %this, metadata !48, metadata !DIExpression()), !dbg !50107 %b = getelementptr inbounds %struct.B, ptr %this, i64 0, i32 2, !dbg !51108 %0 = load i32, ptr %b, align 8, !dbg !51, !tbaa !52109 ret i32 %0, !dbg !51110}111 112declare dso_local void @"?f@D@@UEAAXXZ"(ptr) unnamed_addr #1113 114; Function Attrs: nounwind uwtable115define linkonce_odr dso_local i32 @"?get@C@@UEAAHXZ"(ptr %this) unnamed_addr #0 comdat align 2 !dbg !57 {116entry:117 call void @llvm.dbg.value(metadata ptr %this, metadata !59, metadata !DIExpression()), !dbg !61118 %c = getelementptr inbounds %struct.C, ptr %this, i64 0, i32 2, !dbg !62119 %0 = load i32, ptr %c, align 8, !dbg !62, !tbaa !63120 ret i32 %0, !dbg !62121}122 123; Function Attrs: nounwind readnone speculatable124declare void @llvm.dbg.value(metadata, metadata, metadata) #2125 126attributes #0 = { nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "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" "use-soft-float"="false" }127attributes #1 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "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" "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