199 lines
12 KiB
LLVM
199 lines
12 KiB
LLVM
; RUN: llc < %s -filetype=obj -o - | llvm-readobj - --codeview | FileCheck %s
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; RUN: llc < %s -o - | llvm-mc -filetype=obj --triple=x86_64-windows | llvm-readobj - --codeview | FileCheck %s
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; C++ source to regenerate:
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; $ cat t.cpp
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; struct A { int a; };
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; struct B : virtual A { int b; virtual int get() { return b; } };
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; struct C : virtual A { int c; virtual int get() { return c; } };
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; struct D : B, C {
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; virtual void f(); // make vbptr not offset zero
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; int d;
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; };
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; D d;
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; $ clang -fno-rtti -g -gcodeview t.cpp -emit-llvm -S -o t.ll -O1
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; struct B's field list comes first.
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; CHECK: FieldList ({{.*}}) {
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; CHECK-NEXT: TypeLeafKind: LF_FIELDLIST (0x1203)
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; CHECK-NEXT: VirtualBaseClass {
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; CHECK-NEXT: TypeLeafKind: LF_VBCLASS (0x1401)
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; CHECK-NEXT: AccessSpecifier: Public (0x3)
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; CHECK-NEXT: BaseType: A ({{.*}})
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; CHECK-NEXT: VBPtrType: const int* ({{.*}})
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; CHECK-NEXT: VBPtrOffset: 0x8
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; CHECK-NEXT: VBTableIndex: 0x1
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; CHECK-NEXT: }
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; CHECK: }
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; struct A's field list comes next.
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; CHECK: FieldList ({{.*}})
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; CHECK-NEXT: TypeLeafKind: LF_FIELDLIST (0x1203)
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; CHECK: }
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; struct C's field list comes next.
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; CHECK: FieldList ({{.*}})
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; CHECK-NEXT: TypeLeafKind: LF_FIELDLIST (0x1203)
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; CHECK-NEXT: VirtualBaseClass {
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; CHECK-NEXT: TypeLeafKind: LF_VBCLASS (0x1401)
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; CHECK-NEXT: AccessSpecifier: Public (0x3)
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; CHECK-NEXT: BaseType: A ({{.*}})
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; CHECK-NEXT: VBPtrType: const int* ({{.*}})
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; CHECK-NEXT: VBPtrOffset: 0x8
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; CHECK-NEXT: VBTableIndex: 0x1
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; CHECK-NEXT: }
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; CHECK: }
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; struct D's field list is last.
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; CHECK: FieldList ({{.*}}) {
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; CHECK-NEXT: TypeLeafKind: LF_FIELDLIST (0x1203)
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; CHECK-NEXT: BaseClass {
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; CHECK-NEXT: TypeLeafKind: LF_BCLASS (0x1400)
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; CHECK-NEXT: AccessSpecifier: Public (0x3)
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; CHECK-NEXT: BaseType: B ({{.*}})
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; CHECK-NEXT: BaseOffset: 0x0
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; CHECK-NEXT: }
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; CHECK-NEXT: BaseClass {
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; CHECK-NEXT: TypeLeafKind: LF_BCLASS (0x1400)
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; CHECK-NEXT: AccessSpecifier: Public (0x3)
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; CHECK-NEXT: BaseType: C ({{.*}})
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; CHECK-NEXT: BaseOffset: 0x18
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; CHECK-NEXT: }
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; CHECK-NEXT: IndirectVirtualBaseClass {
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; CHECK-NEXT: TypeLeafKind: LF_IVBCLASS (0x1402)
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; CHECK-NEXT: AccessSpecifier: Public (0x3)
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; CHECK-NEXT: BaseType: A ({{.*}})
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; CHECK-NEXT: VBPtrType: const int* ({{.*}})
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; CHECK-NEXT: VBPtrOffset: 0x8
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; CHECK-NEXT: VBTableIndex: 0x1
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; CHECK-NEXT: }
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; CHECK: }
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; ModuleID = 't.cpp'
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source_filename = "t.cpp"
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target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-windows-msvc19.12.25835"
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%struct.D = type { %struct.B.base, %struct.C.base, i32, [4 x i8], %struct.A }
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%struct.B.base = type { i32 (...)**, i32*, i32 }
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%struct.C.base = type { i32 (...)**, i32*, i32 }
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%struct.A = type { i32 }
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%struct.B = type { i32 (...)**, i32*, i32, [4 x i8], %struct.A }
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%struct.C = type { i32 (...)**, i32*, i32, [4 x i8], %struct.A }
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$"?get@B@@UEAAHXZ" = comdat any
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$"?get@C@@UEAAHXZ" = comdat any
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$"??_8D@@7BB@@@" = comdat any
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$"??_8D@@7BC@@@" = comdat any
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$"??_7D@@6BB@@@" = comdat any
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$"??_7D@@6BC@@@" = comdat any
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@"?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
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@"??_8D@@7BB@@@" = linkonce_odr unnamed_addr constant [2 x i32] [i32 -8, i32 48], comdat
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@"??_8D@@7BC@@@" = linkonce_odr unnamed_addr constant [2 x i32] [i32 -8, i32 24], comdat
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@"??_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
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@"??_7D@@6BC@@@" = linkonce_odr unnamed_addr constant { [1 x i8*] } { [1 x i8*] [i8* bitcast (i32 (%struct.C*)* @"?get@C@@UEAAHXZ" to i8*)] }, comdat
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@llvm.global_ctors = appending global [0 x { i32, void ()*, i8* }] zeroinitializer
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; Function Attrs: nounwind uwtable
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define linkonce_odr dso_local i32 @"?get@B@@UEAAHXZ"(%struct.B* %this) unnamed_addr #0 comdat align 2 !dbg !46 {
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entry:
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call void @llvm.dbg.value(metadata %struct.B* %this, metadata !48, metadata !DIExpression()), !dbg !50
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%b = getelementptr inbounds %struct.B, %struct.B* %this, i64 0, i32 2, !dbg !51
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%0 = load i32, i32* %b, align 8, !dbg !51, !tbaa !52
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ret i32 %0, !dbg !51
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}
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declare dso_local void @"?f@D@@UEAAXXZ"(%struct.D*) unnamed_addr #1
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; Function Attrs: nounwind uwtable
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define linkonce_odr dso_local i32 @"?get@C@@UEAAHXZ"(%struct.C* %this) unnamed_addr #0 comdat align 2 !dbg !57 {
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entry:
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call void @llvm.dbg.value(metadata %struct.C* %this, metadata !59, metadata !DIExpression()), !dbg !61
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%c = getelementptr inbounds %struct.C, %struct.C* %this, i64 0, i32 2, !dbg !62
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%0 = load i32, i32* %c, align 8, !dbg !62, !tbaa !63
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ret i32 %0, !dbg !62
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata) #2
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attributes #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" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #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" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { nounwind readnone speculatable }
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!41, !42, !43, !44}
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!llvm.ident = !{!45}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "d", linkageName: "?d@@3UD@@A", scope: !2, file: !3, line: 8, type: !6, isLocal: false, isDefinition: true)
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!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)
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!3 = !DIFile(filename: "t.cpp", directory: "C:\5CPath\5CTo\5CDirectory", checksumkind: CSK_MD5, checksum: "7477d4db6bf8a461a719bcaab9c6d65e")
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!4 = !{}
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!5 = !{!0}
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!6 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "D", file: !3, line: 4, size: 512, flags: DIFlagTypePassByReference, elements: !7, vtableHolder: !9, identifier: ".?AUD@@")
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!7 = !{!8, !24, !34, !35, !36, !37}
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!8 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !6, baseType: !9, extraData: i32 0)
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!9 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "B", file: !3, line: 2, size: 256, flags: DIFlagTypePassByReference, elements: !10, vtableHolder: !9, identifier: ".?AUB@@")
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!10 = !{!11, !16, !17, !19, !20}
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!11 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !9, baseType: !12, offset: 4, flags: DIFlagVirtual, extraData: i32 8)
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!12 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A", file: !3, line: 1, size: 32, flags: DIFlagTypePassByValue, elements: !13, identifier: ".?AUA@@")
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!13 = !{!14}
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!14 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !12, file: !3, line: 1, baseType: !15, size: 32)
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!15 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!16 = !DIDerivedType(tag: DW_TAG_pointer_type, name: "__vtbl_ptr_type", baseType: null, size: 64)
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!17 = !DIDerivedType(tag: DW_TAG_member, name: "_vptr$B", scope: !3, file: !3, baseType: !18, size: 64, flags: DIFlagArtificial)
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!18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !16, size: 64)
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!19 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !9, file: !3, line: 2, baseType: !15, size: 32, offset: 128)
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!20 = !DISubprogram(name: "get", linkageName: "?get@B@@UEAAHXZ", scope: !9, file: !3, line: 2, type: !21, isLocal: false, isDefinition: false, scopeLine: 2, containingType: !9, virtuality: DW_VIRTUALITY_virtual, virtualIndex: 0, flags: DIFlagPrototyped | DIFlagIntroducedVirtual, isOptimized: true)
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!21 = !DISubroutineType(types: !22)
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!22 = !{!15, !23}
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!23 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
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!24 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !6, baseType: !25, offset: 192, extraData: i32 0)
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!25 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "C", file: !3, line: 3, size: 256, flags: DIFlagTypePassByReference, elements: !26, vtableHolder: !25, identifier: ".?AUC@@")
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!26 = !{!27, !16, !28, !29, !30}
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!27 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !25, baseType: !12, offset: 4, flags: DIFlagVirtual, extraData: i32 8)
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!28 = !DIDerivedType(tag: DW_TAG_member, name: "_vptr$C", scope: !3, file: !3, baseType: !18, size: 64, flags: DIFlagArtificial)
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!29 = !DIDerivedType(tag: DW_TAG_member, name: "c", scope: !25, file: !3, line: 3, baseType: !15, size: 32, offset: 128)
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!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)
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!31 = !DISubroutineType(types: !32)
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!32 = !{!15, !33}
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!33 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !25, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
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!34 = !DIDerivedType(tag: DW_TAG_inheritance, scope: !6, baseType: !12, offset: 4, flags: DIFlagIndirectVirtualBase, extraData: i32 8)
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!35 = !DIDerivedType(tag: DW_TAG_pointer_type, name: "__vtbl_ptr_type", baseType: null, size: 128)
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!36 = !DIDerivedType(tag: DW_TAG_member, name: "d", scope: !6, file: !3, line: 6, baseType: !15, size: 32, offset: 384)
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!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)
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!38 = !DISubroutineType(types: !39)
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!39 = !{null, !40}
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!40 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !6, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
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!41 = !{i32 2, !"CodeView", i32 1}
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!42 = !{i32 2, !"Debug Info Version", i32 3}
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!43 = !{i32 1, !"wchar_size", i32 2}
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!44 = !{i32 7, !"PIC Level", i32 2}
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!45 = !{!"clang version 7.0.0 (trunk)"}
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!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)
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!47 = !{!48}
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!48 = !DILocalVariable(name: "this", arg: 1, scope: !46, type: !49, flags: DIFlagArtificial | DIFlagObjectPointer)
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!49 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64)
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!50 = !DILocation(line: 0, scope: !46)
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!51 = !DILocation(line: 2, scope: !46)
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!52 = !{!53, !54, i64 16}
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!53 = !{!"?AUB@@", !54, i64 16}
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!54 = !{!"int", !55, i64 0}
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!55 = !{!"omnipotent char", !56, i64 0}
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!56 = !{!"Simple C++ TBAA"}
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!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)
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!58 = !{!59}
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!59 = !DILocalVariable(name: "this", arg: 1, scope: !57, type: !60, flags: DIFlagArtificial | DIFlagObjectPointer)
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!60 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !25, size: 64)
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!61 = !DILocation(line: 0, scope: !57)
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!62 = !DILocation(line: 3, scope: !57)
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!63 = !{!64, !54, i64 16}
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!64 = !{!"?AUC@@", !54, i64 16}
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