r183298 - Get rid of VTableContext::ComputeMethodVTableIndices() and VTableContext::getNumVirtualFunctionPointers(); also add some tests for the VTable indices output to make sure we don't regress
NAKAMURA Takumi
geek4civic at gmail.com
Wed Jun 5 05:54:57 PDT 2013
Timur, FYI, it also miscompiles llvm/lib/Support/CommandLine.cpp on
x86_64-linux and i686-cygming.
...Takumi
2013/6/5 Timur Iskhodzhanov <timurrrr at google.com>:
> FYI
> I had to revert it in r183305 as it broke the virtual function lookup
> in libcxx __locale.
> Investigating...
>
> 2013/6/5 Timur Iskhodzhanov <timurrrr at google.com>:
>> Author: timurrrr
>> Date: Wed Jun 5 01:36:37 2013
>> New Revision: 183298
>>
>> URL: http://llvm.org/viewvc/llvm-project?rev=183298&view=rev
>> Log:
>> Get rid of VTableContext::ComputeMethodVTableIndices() and VTableContext::getNumVirtualFunctionPointers(); also add some tests for the VTable indices output to make sure we don't regress
>>
>> Modified:
>> cfe/trunk/include/clang/AST/VTableBuilder.h
>> cfe/trunk/lib/AST/VTableBuilder.cpp
>> cfe/trunk/test/CodeGenCXX/vtable-layout.cpp
>>
>> Modified: cfe/trunk/include/clang/AST/VTableBuilder.h
>> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/VTableBuilder.h?rev=183298&r1=183297&r2=183298&view=diff
>> ==============================================================================
>> --- cfe/trunk/include/clang/AST/VTableBuilder.h (original)
>> +++ cfe/trunk/include/clang/AST/VTableBuilder.h Wed Jun 5 01:36:37 2013
>> @@ -286,10 +286,6 @@ private:
>> VTableLayoutMapTy;
>> VTableLayoutMapTy VTableLayouts;
>>
>> - /// NumVirtualFunctionPointers - Contains the number of virtual function
>> - /// pointers in the vtable for a given record decl.
>> - llvm::DenseMap<const CXXRecordDecl *, uint64_t> NumVirtualFunctionPointers;
>> -
>> typedef std::pair<const CXXRecordDecl *,
>> const CXXRecordDecl *> ClassPairTy;
>>
>> @@ -305,8 +301,6 @@ private:
>> /// Thunks - Contains all thunks that a given method decl will need.
>> ThunksMapTy Thunks;
>>
>> - void ComputeMethodVTableIndices(const CXXRecordDecl *RD);
>> -
>> /// ComputeVTableRelatedInformation - Compute and store all vtable related
>> /// information (vtable layout, vbase offset offsets, thunks etc) for the
>> /// given record decl.
>> @@ -352,10 +346,6 @@ public:
>> return &I->second;
>> }
>>
>> - /// getNumVirtualFunctionPointers - Return the number of virtual function
>> - /// pointers in the vtable for a given record decl.
>> - uint64_t getNumVirtualFunctionPointers(const CXXRecordDecl *RD);
>> -
>> /// getMethodVTableIndex - Return the index (relative to the vtable address
>> /// point) where the function pointer for the given virtual function is
>> /// stored.
>>
>> Modified: cfe/trunk/lib/AST/VTableBuilder.cpp
>> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/VTableBuilder.cpp?rev=183298&r1=183297&r2=183298&view=diff
>> ==============================================================================
>> --- cfe/trunk/lib/AST/VTableBuilder.cpp (original)
>> +++ cfe/trunk/lib/AST/VTableBuilder.cpp Wed Jun 5 01:36:37 2013
>> @@ -789,6 +789,8 @@ public:
>> typedef llvm::DenseMap<BaseSubobject, uint64_t>
>> AddressPointsMapTy;
>>
>> + typedef llvm::DenseMap<GlobalDecl, int64_t> MethodVTableIndicesTy;
>> +
>> private:
>> /// VTables - Global vtable information.
>> VTableContext &VTables;
>> @@ -861,7 +863,11 @@ private:
>> /// MethodInfoMap - The information for all methods in the vtable we're
>> /// currently building.
>> MethodInfoMapTy MethodInfoMap;
>> -
>> +
>> + /// MethodVTableIndices - Contains the index (relative to the vtable address
>> + /// point) where the function pointer for a virtual function is stored.
>> + MethodVTableIndicesTy MethodVTableIndices;
>> +
>> typedef llvm::DenseMap<uint64_t, ThunkInfo> VTableThunksMapTy;
>>
>> /// VTableThunks - The thunks by vtable index in the vtable currently being
>> @@ -1024,6 +1030,14 @@ public:
>> return AddressPoints;
>> }
>>
>> + MethodVTableIndicesTy::const_iterator vtable_indices_begin() const {
>> + return MethodVTableIndices.begin();
>> + }
>> +
>> + MethodVTableIndicesTy::const_iterator vtable_indices_end() const {
>> + return MethodVTableIndices.end();
>> + }
>> +
>> /// getNumVTableComponents - Return the number of components in the vtable
>> /// currently built.
>> uint64_t getNumVTableComponents() const {
>> @@ -1439,6 +1453,15 @@ VTableBuilder::AddMethods(BaseSubobject
>> const CXXRecordDecl *FirstBaseInPrimaryBaseChain,
>> CharUnits FirstBaseOffsetInLayoutClass,
>> PrimaryBasesSetVectorTy &PrimaryBases) {
>> + // Itanium C++ ABI 2.5.2:
>> + // The order of the virtual function pointers in a virtual table is the
>> + // order of declaration of the corresponding member functions in the class.
>> + //
>> + // There is an entry for any virtual function declared in a class,
>> + // whether it is a new function or overrides a base class function,
>> + // unless it overrides a function from the primary base, and conversion
>> + // between their return types does not require an adjustment.
>> +
>> const CXXRecordDecl *RD = Base.getBase();
>> const ASTRecordLayout &Layout = Context.getASTRecordLayout(RD);
>>
>> @@ -1476,6 +1499,11 @@ VTableBuilder::AddMethods(BaseSubobject
>> llvm_unreachable("Found a duplicate primary base!");
>> }
>>
>> + const CXXDestructorDecl *ImplicitVirtualDtor = 0;
>> +
>> + typedef llvm::SmallPtrSet<const CXXMethodDecl *, 8> NewVirtualFunctionsSetTy;
>> + NewVirtualFunctionsSetTy NewVirtualFunctions;
>> +
>> // Now go through all virtual member functions and add them.
>> for (CXXRecordDecl::method_iterator I = RD->method_begin(),
>> E = RD->method_end(); I != E; ++I) {
>> @@ -1541,6 +1569,33 @@ VTableBuilder::AddMethods(BaseSubobject
>> }
>> }
>>
>> + if (const CXXDestructorDecl *DD = dyn_cast<CXXDestructorDecl>(MD)) {
>> + if (MD->isImplicit()) {
>> + // Itanium C++ ABI 2.5.2:
>> + // If a class has an implicitly-defined virtual destructor,
>> + // its entries come after the declared virtual function pointers.
>> +
>> + assert(!ImplicitVirtualDtor &&
>> + "Did already see an implicit virtual dtor!");
>> + ImplicitVirtualDtor = DD;
>> + continue;
>> + }
>> + }
>> +
>> + NewVirtualFunctions.insert(MD);
>> + }
>> +
>> + if (ImplicitVirtualDtor)
>> + NewVirtualFunctions.insert(ImplicitVirtualDtor);
>> +
>> + for (NewVirtualFunctionsSetTy::const_iterator I = NewVirtualFunctions.begin(),
>> + E = NewVirtualFunctions.end(); I != E; ++I) {
>> + const CXXMethodDecl *MD = *I;
>> +
>> + // Get the final overrider.
>> + FinalOverriders::OverriderInfo Overrider =
>> + Overriders.getOverrider(MD, Base.getBaseOffset());
>> +
>> // Insert the method info for this method.
>> MethodInfo MethodInfo(Base.getBaseOffset(), BaseOffsetInLayoutClass,
>> Components.size());
>> @@ -1557,7 +1612,7 @@ VTableBuilder::AddMethods(BaseSubobject
>> Components.push_back(VTableComponent::MakeUnusedFunction(OverriderMD));
>> continue;
>> }
>> -
>> +
>> // Check if this overrider needs a return adjustment.
>> // We don't want to do this for pure virtual member functions.
>> BaseOffset ReturnAdjustmentOffset;
>> @@ -1642,11 +1697,34 @@ VTableBuilder::LayoutPrimaryAndSecondary
>> Base.getBase(), OffsetInLayoutClass,
>> PrimaryBases);
>>
>> + const CXXRecordDecl *RD = Base.getBase();
>> + if (RD == MostDerivedClass) {
>> + assert(MethodVTableIndices.empty());
>> + for (MethodInfoMapTy::const_iterator I = MethodInfoMap.begin(),
>> + E = MethodInfoMap.end(); I != E; ++I) {
>> + const CXXMethodDecl *MD = I->first;
>> + const MethodInfo &MI = I->second;
>> + if (const CXXDestructorDecl *DD = dyn_cast<CXXDestructorDecl>(MD)) {
>> + // FIXME: Should probably add a layer of abstraction for vtable generation.
>> + if (!isMicrosoftABI()) {
>> + MethodVTableIndices[GlobalDecl(DD, Dtor_Complete)]
>> + = MI.VTableIndex - AddressPoint;
>> + MethodVTableIndices[GlobalDecl(DD, Dtor_Deleting)]
>> + = MI.VTableIndex + 1 - AddressPoint;
>> + } else {
>> + MethodVTableIndices[GlobalDecl(DD, Dtor_Deleting)]
>> + = MI.VTableIndex - AddressPoint;
>> + }
>> + } else {
>> + MethodVTableIndices[MD] = MI.VTableIndex - AddressPoint;
>> + }
>> + }
>> + }
>> +
>> // Compute 'this' pointer adjustments.
>> ComputeThisAdjustments();
>>
>> // Add all address points.
>> - const CXXRecordDecl *RD = Base.getBase();
>> while (true) {
>> AddressPoints.insert(std::make_pair(
>> BaseSubobject(RD, OffsetInLayoutClass),
>> @@ -2138,16 +2216,19 @@ void VTableBuilder::dumpLayout(raw_ostre
>> if (const CXXDestructorDecl *DD = dyn_cast<CXXDestructorDecl>(MD)) {
>> // FIXME: Should add a layer of abstraction for vtable generation.
>> if (!isMicrosoftABI()) {
>> - IndicesMap[VTables.getMethodVTableIndex(GlobalDecl(DD, Dtor_Complete))]
>> - = MethodName + " [complete]";
>> - IndicesMap[VTables.getMethodVTableIndex(GlobalDecl(DD, Dtor_Deleting))]
>> - = MethodName + " [deleting]";
>> + GlobalDecl GD(DD, Dtor_Complete);
>> + assert(MethodVTableIndices.count(GD));
>> + uint64_t VTableIndex = MethodVTableIndices[GD];
>> + IndicesMap[VTableIndex] = MethodName + " [complete]";
>> + IndicesMap[VTableIndex + 1] = MethodName + " [deleting]";
>> } else {
>> - IndicesMap[VTables.getMethodVTableIndex(GlobalDecl(DD, Dtor_Deleting))]
>> - = MethodName + " [scalar deleting]";
>> + GlobalDecl GD(DD, Dtor_Deleting);
>> + assert(MethodVTableIndices.count(GD));
>> + IndicesMap[MethodVTableIndices[GD]] = MethodName + " [scalar deleting]";
>> }
>> } else {
>> - IndicesMap[VTables.getMethodVTableIndex(MD)] = MethodName;
>> + assert(MethodVTableIndices.count(MD));
>> + IndicesMap[MethodVTableIndices[MD]] = MethodName;
>> }
>> }
>>
>> @@ -2162,7 +2243,7 @@ void VTableBuilder::dumpLayout(raw_ostre
>> uint64_t VTableIndex = I->first;
>> const std::string &MethodName = I->second;
>>
>> - Out << llvm::format(" %4" PRIu64 " | ", VTableIndex) << MethodName
>> + Out << llvm::format("%4" PRIu64 " | ", VTableIndex) << MethodName
>> << '\n';
>> }
>> }
>> @@ -2216,138 +2297,6 @@ CollectPrimaryBases(const CXXRecordDecl
>> llvm_unreachable("Found a duplicate primary base!");
>> }
>>
>> -void VTableContext::ComputeMethodVTableIndices(const CXXRecordDecl *RD) {
>> -
>> - // Itanium C++ ABI 2.5.2:
>> - // The order of the virtual function pointers in a virtual table is the
>> - // order of declaration of the corresponding member functions in the class.
>> - //
>> - // There is an entry for any virtual function declared in a class,
>> - // whether it is a new function or overrides a base class function,
>> - // unless it overrides a function from the primary base, and conversion
>> - // between their return types does not require an adjustment.
>> -
>> - int64_t CurrentIndex = 0;
>> -
>> - const ASTRecordLayout &Layout = Context.getASTRecordLayout(RD);
>> - const CXXRecordDecl *PrimaryBase = Layout.getPrimaryBase();
>> -
>> - if (PrimaryBase) {
>> - assert(PrimaryBase->isCompleteDefinition() &&
>> - "Should have the definition decl of the primary base!");
>> -
>> - // Since the record decl shares its vtable pointer with the primary base
>> - // we need to start counting at the end of the primary base's vtable.
>> - CurrentIndex = getNumVirtualFunctionPointers(PrimaryBase);
>> - }
>> -
>> - // Collect all the primary bases, so we can check whether methods override
>> - // a method from the base.
>> - VTableBuilder::PrimaryBasesSetVectorTy PrimaryBases;
>> - CollectPrimaryBases(RD, Context, PrimaryBases);
>> -
>> - const CXXDestructorDecl *ImplicitVirtualDtor = 0;
>> -
>> - for (CXXRecordDecl::method_iterator i = RD->method_begin(),
>> - e = RD->method_end(); i != e; ++i) {
>> - const CXXMethodDecl *MD = *i;
>> -
>> - // We only want virtual methods.
>> - if (!MD->isVirtual())
>> - continue;
>> -
>> - // Check if this method overrides a method in the primary base.
>> - if (const CXXMethodDecl *OverriddenMD =
>> - FindNearestOverriddenMethod(MD, PrimaryBases)) {
>> - // Check if converting from the return type of the method to the
>> - // return type of the overridden method requires conversion.
>> - if (ComputeReturnAdjustmentBaseOffset(Context, MD,
>> - OverriddenMD).isEmpty()) {
>> - // This index is shared between the index in the vtable of the primary
>> - // base class.
>> - if (const CXXDestructorDecl *DD = dyn_cast<CXXDestructorDecl>(MD)) {
>> - const CXXDestructorDecl *OverriddenDD =
>> - cast<CXXDestructorDecl>(OverriddenMD);
>> -
>> - if (!isMicrosoftABI()) {
>> - // Add both the complete and deleting entries.
>> - MethodVTableIndices[GlobalDecl(DD, Dtor_Complete)] =
>> - getMethodVTableIndex(GlobalDecl(OverriddenDD, Dtor_Complete));
>> - MethodVTableIndices[GlobalDecl(DD, Dtor_Deleting)] =
>> - getMethodVTableIndex(GlobalDecl(OverriddenDD, Dtor_Deleting));
>> - } else {
>> - // Add the scalar deleting destructor.
>> - MethodVTableIndices[GlobalDecl(DD, Dtor_Deleting)] =
>> - getMethodVTableIndex(GlobalDecl(OverriddenDD, Dtor_Deleting));
>> - }
>> - } else {
>> - MethodVTableIndices[MD] = getMethodVTableIndex(OverriddenMD);
>> - }
>> -
>> - // We don't need to add an entry for this method.
>> - continue;
>> - }
>> - }
>> -
>> - if (const CXXDestructorDecl *DD = dyn_cast<CXXDestructorDecl>(MD)) {
>> - if (MD->isImplicit()) {
>> - assert(!ImplicitVirtualDtor &&
>> - "Did already see an implicit virtual dtor!");
>> - ImplicitVirtualDtor = DD;
>> - continue;
>> - }
>> -
>> - if (!isMicrosoftABI()) {
>> - // Add the complete dtor.
>> - MethodVTableIndices[GlobalDecl(DD, Dtor_Complete)] = CurrentIndex++;
>> -
>> - // Add the deleting dtor.
>> - MethodVTableIndices[GlobalDecl(DD, Dtor_Deleting)] = CurrentIndex++;
>> - } else {
>> - // Add the scalar deleting dtor.
>> - MethodVTableIndices[GlobalDecl(DD, Dtor_Deleting)] = CurrentIndex++;
>> - }
>> - } else {
>> - // Add the entry.
>> - MethodVTableIndices[MD] = CurrentIndex++;
>> - }
>> - }
>> -
>> - if (ImplicitVirtualDtor) {
>> - // Itanium C++ ABI 2.5.2:
>> - // If a class has an implicitly-defined virtual destructor,
>> - // its entries come after the declared virtual function pointers.
>> -
>> - if (isMicrosoftABI()) {
>> - ErrorUnsupported("implicit virtual destructor in the Microsoft ABI",
>> - ImplicitVirtualDtor->getLocation());
>> - }
>> -
>> - // Add the complete dtor.
>> - MethodVTableIndices[GlobalDecl(ImplicitVirtualDtor, Dtor_Complete)] =
>> - CurrentIndex++;
>> -
>> - // Add the deleting dtor.
>> - MethodVTableIndices[GlobalDecl(ImplicitVirtualDtor, Dtor_Deleting)] =
>> - CurrentIndex++;
>> - }
>> -
>> - NumVirtualFunctionPointers[RD] = CurrentIndex;
>> -}
>> -
>> -uint64_t VTableContext::getNumVirtualFunctionPointers(const CXXRecordDecl *RD) {
>> - llvm::DenseMap<const CXXRecordDecl *, uint64_t>::iterator I =
>> - NumVirtualFunctionPointers.find(RD);
>> - if (I != NumVirtualFunctionPointers.end())
>> - return I->second;
>> -
>> - ComputeMethodVTableIndices(RD);
>> -
>> - I = NumVirtualFunctionPointers.find(RD);
>> - assert(I != NumVirtualFunctionPointers.end() && "Did not find entry!");
>> - return I->second;
>> -}
>> -
>> uint64_t VTableContext::getMethodVTableIndex(GlobalDecl GD) {
>> MethodVTableIndicesTy::iterator I = MethodVTableIndices.find(GD);
>> if (I != MethodVTableIndices.end())
>> @@ -2355,7 +2304,7 @@ uint64_t VTableContext::getMethodVTableI
>>
>> const CXXRecordDecl *RD = cast<CXXMethodDecl>(GD.getDecl())->getParent();
>>
>> - ComputeMethodVTableIndices(RD);
>> + ComputeVTableRelatedInformation(RD);
>>
>> I = MethodVTableIndices.find(GD);
>> assert(I != MethodVTableIndices.end() && "Did not find index!");
>> @@ -2417,6 +2366,9 @@ void VTableContext::ComputeVTableRelated
>> /*MostDerivedClassIsVirtual=*/0, RD);
>> Entry = CreateVTableLayout(Builder);
>>
>> + MethodVTableIndices.insert(Builder.vtable_indices_begin(),
>> + Builder.vtable_indices_end());
>> +
>> // Add the known thunks.
>> Thunks.insert(Builder.thunks_begin(), Builder.thunks_end());
>>
>>
>> Modified: cfe/trunk/test/CodeGenCXX/vtable-layout.cpp
>> URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/vtable-layout.cpp?rev=183298&r1=183297&r2=183298&view=diff
>> ==============================================================================
>> --- cfe/trunk/test/CodeGenCXX/vtable-layout.cpp (original)
>> +++ cfe/trunk/test/CodeGenCXX/vtable-layout.cpp Wed Jun 5 01:36:37 2013
>> @@ -61,6 +61,9 @@ namespace Test1 {
>> // CHECK-1-NEXT: 1 | Test1::A RTTI
>> // CHECK-1-NEXT: -- (Test1::A, 0) vtable address --
>> // CHECK-1-NEXT: 2 | void Test1::A::f()
>> +//
>> +// CHECK-1: VTable indices for 'Test1::A' (1 entries).
>> +// CHECK-1-NEXT: 0 | void Test1::A::f()
>> struct A {
>> virtual void f();
>> };
>> @@ -82,6 +85,15 @@ namespace Test2 {
>> // CHECK-2-NEXT: 6 | Test2::A::~A() [deleting]
>> // CHECK-2-NEXT: 7 | void Test2::A::h()
>> // CHECK-2-NEXT: 8 | Test2::A &Test2::A::operator=(const Test2::A &)
>> +//
>> +// CHECK-2: VTable indices for 'Test2::A' (7 entries).
>> +// CHECK-2-NEXT: 0 | void Test2::A::f()
>> +// CHECK-2-NEXT: 1 | void Test2::A::f() const
>> +// CHECK-2-NEXT: 2 | Test2::A *Test2::A::g(int)
>> +// CHECK-2-NEXT: 3 | Test2::A::~A() [complete]
>> +// CHECK-2-NEXT: 4 | Test2::A::~A() [deleting]
>> +// CHECK-2-NEXT: 5 | void Test2::A::h()
>> +// CHECK-2-NEXT: 6 | Test2::A &Test2::A::operator=(const Test2::A &)
>> struct A {
>> virtual void f();
>> virtual void f() const;
>> @@ -103,6 +115,12 @@ void A::f() { }
>> // CHECK-3-NEXT: 3 | void Test2::B::g() [pure]
>> // CHECK-3-NEXT: 4 | Test2::B::~B() [complete] [pure]
>> // CHECK-3-NEXT: 5 | Test2::B::~B() [deleting] [pure]
>> +//
>> +// CHECK-3: VTable indices for 'Test2::B' (4 entries).
>> +// CHECK-3-NEXT: 0 | void Test2::B::f()
>> +// CHECK-3-NEXT: 1 | void Test2::B::g()
>> +// CHECK-3-NEXT: 2 | Test2::B::~B() [complete]
>> +// CHECK-3-NEXT: 3 | Test2::B::~B() [deleting]
>> struct B {
>> virtual void f();
>> virtual void g() = 0;
>> @@ -123,6 +141,9 @@ namespace Test3 {
>> // CHECK-4-NEXT: 1 | Test3::A RTTI
>> // CHECK-4-NEXT: -- (Test3::A, 0) vtable address --
>> // CHECK-4-NEXT: 2 | void Test3::A::f()
>> +//
>> +// CHECK-4: VTable indices for 'Test3::A' (1 entries).
>> +// CHECK-4-NEXT: 0 | void Test3::A::f()
>> struct A {
>> virtual void f();
>> };
>> @@ -135,6 +156,10 @@ void A::f() { }
>> // CHECK-5-NEXT: -- (Test3::B, 0) vtable address --
>> // CHECK-5-NEXT: 2 | void Test3::B::f()
>> // CHECK-5-NEXT: 3 | void Test3::B::g()
>> +//
>> +// CHECK-5: VTable indices for 'Test3::B' (2 entries).
>> +// CHECK-5-NEXT: 0 | void Test3::B::f()
>> +// CHECK-5-NEXT: 1 | void Test3::B::g()
>> struct B : A {
>> virtual void f();
>> virtual void g();
>> @@ -149,6 +174,10 @@ void B::f() { }
>> // CHECK-6-NEXT: 2 | void Test3::A::f()
>> // CHECK-6-NEXT: 3 | void Test3::C::g()
>> // CHECK-6-NEXT: 4 | void Test3::C::h()
>> +//
>> +// CHECK-6: VTable indices for 'Test3::C' (2 entries).
>> +// CHECK-6-NEXT: 1 | void Test3::C::g()
>> +// CHECK-6-NEXT: 2 | void Test3::C::h()
>> struct C : A {
>> virtual void g();
>> virtual void h();
>> @@ -164,6 +193,11 @@ void C::g() { }
>> // CHECK-7-NEXT: 2 | void Test3::D::f()
>> // CHECK-7-NEXT: 3 | void Test3::D::g()
>> // CHECK-7-NEXT: 4 | void Test3::D::h()
>> +//
>> +// CHECK-7: VTable indices for 'Test3::D' (3 entries).
>> +// CHECK-7-NEXT: 0 | void Test3::D::f()
>> +// CHECK-7-NEXT: 1 | void Test3::D::g()
>> +// CHECK-7-NEXT: 2 | void Test3::D::h()
>> struct D : B {
>> virtual void f();
>> virtual void g();
>> @@ -193,7 +227,9 @@ struct A {
>> // CHECK-8-NEXT: 2 | Test4::R3 *Test4::B::f()
>> // CHECK-8-NEXT: [return adjustment: 4 non-virtual]
>> // CHECK-8-NEXT: 3 | Test4::R3 *Test4::B::f()
>> -
>> +//
>> +// CHECK-8: VTable indices for 'Test4::B' (1 entries).
>> +// CHECK-8-NEXT: 1 | Test4::R3 *Test4::B::f()
>> struct B : A {
>> virtual R3 *f();
>> };
>> @@ -215,6 +251,9 @@ struct C {
>> // CHECK-9-NEXT: 2 | Test4::V2 *Test4::D::f()
>> // CHECK-9-NEXT: [return adjustment: 0 non-virtual, -24 vbase offset offset]
>> // CHECK-9-NEXT: 3 | Test4::V2 *Test4::D::f()
>> +//
>> +// CHECK-9: VTable indices for 'Test4::D' (1 entries).
>> +// CHECK-9-NEXT: 1 | Test4::V2 *Test4::D::f()
>> struct D : C {
>> virtual V2 *f();
>> };
>> @@ -231,7 +270,9 @@ struct V3 : virtual R3 { int r3; };
>> // CHECK-10-NEXT: 2 | Test4::V3 *Test4::E::f()
>> // CHECK-10-NEXT: [return adjustment: 4 non-virtual, -24 vbase offset offset]
>> // CHECK-10-NEXT: 3 | Test4::V3 *Test4::E::f()
>> -
>> +//
>> +// CHECK-10: VTable indices for 'Test4::E' (1 entries).
>> +// CHECK-10-NEXT: 1 | Test4::V3 *Test4::E::f()
>> struct E : A {
>> virtual V3 *f();
>> };
>> @@ -247,6 +288,10 @@ V3 *E::f() { return 0;}
>> // CHECK-11-NEXT: 2 | Test4::R3 *Test4::F::f() [pure]
>> // CHECK-11-NEXT: 3 | void Test4::F::g()
>> // CHECK-11-NEXT: 4 | Test4::R3 *Test4::F::f() [pure]
>> +//
>> +// CHECK-11: VTable indices for 'Test4::F' (2 entries).
>> +// CHECK-11-NEXT: 1 | void Test4::F::g()
>> +// CHECK-11-NEXT: 2 | Test4::R3 *Test4::F::f()
>> struct F : A {
>> virtual void g();
>> virtual R3 *f() = 0;
>> @@ -289,6 +334,9 @@ struct B2 : A {
>> // CHECK-12-NEXT: -- (Test5::B2, 16) vtable address --
>> // CHECK-12-NEXT: 7 | void Test5::A::f()
>> // CHECK-12-NEXT: 8 | void Test5::B2::g()
>> +//
>> +// CHECK-12: VTable indices for 'Test5::C' (1 entries).
>> +// CHECK-12-NEXT: 2 | void Test5::C::h()
>> struct C : B1, B2 {
>> virtual void h();
>> };
>> @@ -319,6 +367,9 @@ struct A2 {
>> // CHECK-13-NEXT: -- (Test6::A2, 16) vtable address --
>> // CHECK-13-NEXT: 5 | void Test6::C::f()
>> // CHECK-13-NEXT: [this adjustment: -16 non-virtual]
>> +//
>> +// CHECK-13: VTable indices for 'Test6::C' (1 entries).
>> +// CHECK-13-NEXT: 0 | void Test6::C::f()
>> struct C : A1, A2 {
>> virtual void f();
>> };
>> @@ -360,6 +411,9 @@ struct C { virtual void c(); };
>> // CHECK-14-NEXT: -- (Test7::B2, 24) vtable address --
>> // CHECK-14-NEXT: 9 | void Test7::D::f()
>> // CHECK-14-NEXT: [this adjustment: -24 non-virtual]
>> +//
>> +// CHECK-14: VTable indices for 'Test7::D' (1 entries).
>> +// CHECK-14-NEXT: 1 | void Test7::D::f()
>> struct D : C, B1, B2 {
>> virtual void f();
>> };
>> @@ -379,7 +433,10 @@ struct A { };
>> // CHECK-15-NEXT: 1 | Test8::B RTTI
>> // CHECK-15-NEXT: -- (Test8::B, 0) vtable address --
>> // CHECK-15-NEXT: 2 | void Test8::B::f()
>> -struct B : A {
>> +//
>> +// CHECK-15: VTable indices for 'Test8::B' (1 entries).
>> +// CHECK-15-NEXT: 0 | void Test8::B::f()
>> +struct B : A {
>> virtual void f();
>> };
>> void B::f() { }
>> @@ -400,6 +457,9 @@ struct A2 { int a2; };
>> // CHECK-16-NEXT: 3 | Test9::B RTTI
>> // CHECK-16-NEXT: -- (Test9::B, 0) vtable address --
>> // CHECK-16-NEXT: 4 | void Test9::B::f()
>> +//
>> +// CHECK-16: VTable indices for 'Test9::B' (1 entries).
>> +// CHECK-16-NEXT: 0 | void Test9::B::f()
>> struct B : virtual A1, virtual A2 {
>> int b;
>>
>> @@ -430,6 +490,9 @@ struct A2 { virtual void a2(); };
>> // CHECK-17-NEXT: 5 | Test10::C RTTI
>> // CHECK-17-NEXT: -- (Test10::A2, 8) vtable address --
>> // CHECK-17-NEXT: 6 | void Test10::A2::a2()
>> +//
>> +// CHECK-17: VTable indices for 'Test10::C' (1 entries).
>> +// CHECK-17-NEXT: 1 | void Test10::C::f()
>> struct B : A1, A2 {
>> int b;
>> };
>> @@ -461,6 +524,9 @@ struct B : A1, virtual A2 {
>> // CHECK-18-NEXT: 5 | vbase_offset (16)
>> // CHECK-18-NEXT: 6 | offset_to_top (-8)
>> // CHECK-18-NEXT: 7 | Test11::C RTTI
>> +//
>> +// CHECK-18: VTable indices for 'Test11::C' (1 entries).
>> +// CHECK-18-NEXT: 0 | void Test11::C::f()
>> struct C : virtual B {
>> virtual void f();
>> };
>> @@ -498,6 +564,10 @@ namespace Test12 {
>> // CHECK-19-NEXT: 17 | Test12::B RTTI
>> // CHECK-19-NEXT: -- (Test12::A3, 40) vtable address --
>> // CHECK-19-NEXT: 18 | void Test12::A3::a3()
>> +//
>> +// CHECK-19: VTable indices for 'Test12::B' (2 entries).
>> +// CHECK-19-NEXT: 0 | void Test12::B::f()
>> +// CHECK-19-NEXT: 1 | void Test12::B::a()
>> struct A1 {
>> virtual void a1();
>> int a;
>> @@ -548,6 +618,9 @@ struct B : virtual A {
>> // CHECK-20-NEXT: -- (Test13::B, 0) vtable address --
>> // CHECK-20-NEXT: -- (Test13::C, 0) vtable address --
>> // CHECK-20-NEXT: 5 | void Test13::C::f()
>> +//
>> +// CHECK-20: VTable indices for 'Test13::C' (1 entries).
>> +// CHECK-20-NEXT: 0 | void Test13::C::f()
>> struct C : virtual B, virtual A {
>> virtual void f();
>> };
>> @@ -577,6 +650,9 @@ struct C : virtual B { };
>> // CHECK-21-NEXT: -- (Test14::C, 0) vtable address --
>> // CHECK-21-NEXT: -- (Test14::D, 0) vtable address --
>> // CHECK-21-NEXT: 4 | void Test14::D::f()
>> +//
>> +// CHECK-21: VTable indices for 'Test14::D' (1 entries).
>> +// CHECK-21-NEXT: 0 | void Test14::D::f()
>> struct D : C, virtual B {
>> virtual void f();
>> };
>> @@ -608,6 +684,9 @@ struct C : virtual B { };
>> // CHECK-22-NEXT: -- (Test15::B, 8) vtable address --
>> // CHECK-22-NEXT: -- (Test15::C, 8) vtable address --
>> // CHECK-22-NEXT: 10 | void Test15::B::b()
>> +//
>> +// CHECK-22: VTable indices for 'Test15::D' (1 entries).
>> +// CHECK-22-NEXT: 1 | void Test15::D::f()
>> struct D : A, virtual B, virtual C {
>> virtual void f();
>> };
>> @@ -648,6 +727,11 @@ struct C : A, B { virtual ~C(); };
>> // CHECK-23-NEXT: [this adjustment: -8 non-virtual, -24 vcall offset offset]
>> // CHECK-23-NEXT: 14 | Test16::D::~D() [deleting]
>> // CHECK-23-NEXT: [this adjustment: -8 non-virtual, -24 vcall offset offset]
>> +//
>> +// CHECK-23: VTable indices for 'Test16::D' (3 entries).
>> +// CHECK-23-NEXT: 0 | void Test16::D::f()
>> +// CHECK-23-NEXT: 1 | Test16::D::~D() [complete]
>> +// CHECK-23-NEXT: 2 | Test16::D::~D() [deleting]
>> struct D : virtual C {
>> virtual void f();
>> };
>> @@ -683,6 +767,9 @@ struct D : virtual B, virtual C { virtua
>> // CHECK-24-NEXT: -- (Test17::C, 8) vtable address --
>> // CHECK-24-NEXT: 12 | void Test17::E::f()
>> // CHECK-24-NEXT: [this adjustment: 0 non-virtual, -24 vcall offset offset]
>> +//
>> +// CHECK-24: VTable indices for 'Test17::E' (1 entries).
>> +// CHECK-24-NEXT: 0 | void Test17::E::f()
>> class E : virtual D {
>> virtual void f();
>> };
>> @@ -741,6 +828,10 @@ struct C : A, B {
>> // CHECK-25-NEXT: 22 | void Test18::D::f()
>> // CHECK-25-NEXT: [this adjustment: -8 non-virtual, -32 vcall offset offset]
>> // CHECK-25-NEXT: 23 | [unused] void Test18::C::g()
>> +//
>> +// CHECK-25: VTable indices for 'Test18::D' (2 entries).
>> +// CHECK-25-NEXT: 0 | void Test18::D::f()
>> +// CHECK-25-NEXT: 2 | void Test18::D::h()
>>
>> // CHECK-25: Construction vtable for ('Test18::B', 0) in 'Test18::D' (7 entries).
>> // CHECK-25-NEXT: 0 | vbase_offset (0)
>> @@ -848,6 +939,9 @@ struct C {
>> // CHECK-26-NEXT: -- (Test19::A, 24) vtable address --
>> // CHECK-26-NEXT: 12 | void Test19::D::f()
>> // CHECK-26-NEXT: [this adjustment: 0 non-virtual, -24 vcall offset offset]
>> +//
>> +// CHECK-26: VTable indices for 'Test19::D' (1 entries).
>> +// CHECK-26-NEXT: 1 | void Test19::D::f()
>> struct D : C, B, virtual A {
>> virtual void f();
>> };
>> @@ -880,7 +974,11 @@ struct B : A { };
>> // CHECK-27-NEXT: -- (Test20::B, 8) vtable address --
>> // CHECK-27-NEXT: 7 | void Test20::C::f() [pure]
>> // CHECK-27-NEXT: 8 | void Test20::A::g()
>> -struct C : A, B {
>> +//
>> +// CHECK-27: VTable indices for 'Test20::C' (2 entries).
>> +// CHECK-27-NEXT: 0 | void Test20::C::f()
>> +// CHECK-27-NEXT: 2 | void Test20::C::h()
>> +struct C : A, B {
>> virtual void f() = 0;
>> virtual void h();
>> };
>> @@ -931,6 +1029,9 @@ class E : virtual C { };
>> // CHECK-28-NEXT: Test21::C | -48
>> // CHECK-28-NEXT: Test21::D | -56
>> // CHECK-28-NEXT: Test21::E | -64
>> +//
>> +// CHECK-28: VTable indices for 'Test21::F' (1 entries).
>> +// CHECK-28-NEXT: 0 | void Test21::F::f()
>> class F : virtual D, virtual E {
>> virtual void f();
>> };
>> @@ -960,6 +1061,9 @@ struct V2 : virtual V1 {
>> // CHECK-29-NEXT: 6 | offset_to_top (-16)
>> // CHECK-29-NEXT: 7 | Test22::C RTTI
>> // CHECK-29-NEXT: -- (Test22::V2, 16) vtable address --
>> +//
>> +// CHECK-29: VTable indices for 'Test22::C' (1 entries).
>> +// CHECK-29-NEXT: 0 | void Test22::C::f()
>>
>> // CHECK-29: Construction vtable for ('Test22::V2', 16) in 'Test22::C' (3 entries).
>> // CHECK-29-NEXT: 0 | vbase_offset (-4)
>> @@ -1052,6 +1156,9 @@ struct C : virtual A { };
>> // CHECK-31-NEXT: 8 | Test24::D RTTI
>> // CHECK-31-NEXT: -- (Test24::C, 8) vtable address --
>> // CHECK-31-NEXT: 9 | [unused] void Test24::D::f()
>> +//
>> +// CHECK-31: VTable indices for 'Test24::D' (1 entries).
>> +// CHECK-31-NEXT: 0 | void Test24::D::f()
>>
>> // CHECK-31: Construction vtable for ('Test24::B', 0) in 'Test24::D' (5 entries).
>> // CHECK-31-NEXT: 0 | vbase_offset (0)
>> @@ -1108,6 +1215,9 @@ struct B : virtual V { };
>> // CHECK-32-NEXT: 9 | Test25::C RTTI
>> // CHECK-32-NEXT: -- (Test25::B, 8) vtable address --
>> // CHECK-32-NEXT: 10 | [unused] void Test25::V::f()
>> +//
>> +// CHECK-32: VTable indices for 'Test25::C' (1 entries).
>> +// CHECK-32-NEXT: 1 | void Test25::C::g()
>>
>> // CHECK-32: Construction vtable for ('Test25::A', 0) in 'Test25::C' (5 entries).
>> // CHECK-32-NEXT: 0 | vbase_offset (0)
>> @@ -1174,6 +1284,9 @@ struct C : virtual A {
>> // CHECK-33-NEXT: -- (Test26::C, 8) vtable address --
>> // CHECK-33-NEXT: 13 | void Test26::A::a()
>> // CHECK-33-NEXT: 14 | void Test26::C::b()
>> +//
>> +// CHECK-33: VTable indices for 'Test26::D' (1 entries).
>> +// CHECK-33-NEXT: 1 | void Test26::D::d()
>>
>> // CHECK-33: Construction vtable for ('Test26::C', 8) in 'Test26::D' (7 entries).
>> // CHECK-33-NEXT: 0 | vcall_offset (0)
>> @@ -1232,6 +1345,9 @@ struct D : A, virtual B, C {
>> // CHECK-34-NEXT: 11 | Test27::E RTTI
>> // CHECK-34-NEXT: -- (Test27::B, 16) vtable address --
>> // CHECK-34-NEXT: 12 | void Test27::B::b()
>> +//
>> +// CHECK-34: VTable indices for 'Test27::E' (1 entries).
>> +// CHECK-34-NEXT: 2 | void Test27::E::e()
>>
>> // CHECK-34: Construction vtable for ('Test27::D', 0) in 'Test27::E' (9 entries).
>> // CHECK-34-NEXT: 0 | vbase_offset (16)
>> @@ -1293,6 +1409,9 @@ struct D : virtual C {
>> // CHECK-35-NEXT: 12 | Test28::E RTTI
>> // CHECK-35-NEXT: -- (Test28::B, 16) vtable address --
>> // CHECK-35-NEXT: 13 | void Test28::B::b()
>> +//
>> +// CHECK-35: VTable indices for 'Test28::E' (1 entries).
>> +// CHECK-35-NEXT : 0 | void Test28::E::e()
>>
>> // CHECK-35: Construction vtable for ('Test28::D', 0) in 'Test28::E' (13 entries).
>> // CHECK-35-NEXT: 0 | vbase_offset (8)
>> @@ -1342,6 +1461,9 @@ struct A {
>> // CHECK-36-NEXT: [return adjustment: 0 non-virtual, -24 vbase offset offset]
>> // CHECK-36-NEXT: [this adjustment: 0 non-virtual, -24 vcall offset offset]
>> // CHECK-36-NEXT: 5 | Test29::V2 *Test29::B::f()
>> +//
>> +// CHECK-36: VTable indices for 'Test29::B' (1 entries).
>> +// CHECK-36-NEXT: 1 | Test29::V2 *Test29::B::f()
>> struct B : virtual A {
>> virtual V2 *f();
>> };
>> @@ -1403,6 +1525,9 @@ struct C : A, virtual B {
>> // CHECK-37-NEXT: -- (Test31::C, 8) vtable address --
>> // CHECK-37-NEXT: 10 | void Test31::D::f()
>> // CHECK-37-NEXT: [this adjustment: 0 non-virtual, -24 vcall offset offset]
>> +//
>> +// CHECK-37: VTable indices for 'Test31::D' (1 entries).
>> +// CHECK-37-NEXT: 0 | void Test31::D::f()
>> struct D : virtual C {
>> virtual void f();
>> };
>> @@ -1494,6 +1619,9 @@ struct E : A, D {
>> // CHECK-39-NEXT: 28 | Test33::F RTTI
>> // CHECK-39-NEXT: -- (Test33::B, 24) vtable address --
>> // CHECK-39-NEXT: 29 | void Test33::B::b()
>> +//
>> +// CHECK-39: VTable indices for 'Test33::F' (1 entries).
>> +// CHECK-39-NEXT: 1 | void Test33::F::f()
>> struct F : virtual E, A {
>> virtual void f();
>> };
>> @@ -1631,12 +1759,15 @@ struct G : virtual E { };
>> // CHECK-41-NEXT: 29 | void Test35::C::c()
>> // CHECK-41-NEXT: 30 | void Test35::D::d()
>> // CHECK-41-NEXT: 31 | void Test35::E::e()
>> -
>> +//
>> // CHECK-41: Virtual base offset offsets for 'Test35::H' (4 entries).
>> // CHECK-41-NEXT: Test35::A | -32
>> // CHECK-41-NEXT: Test35::B | -24
>> // CHECK-41-NEXT: Test35::D | -56
>> // CHECK-41-NEXT: Test35::E | -64
>> +//
>> +// CHECK-41: VTable indices for 'Test35::H' (1 entries).
>> +// CHECK-41-NEXT: 2 | void Test35::H::h()
>> struct H : F, G {
>> virtual void h();
>> };
>> @@ -1676,6 +1807,9 @@ struct C : virtual A {
>> // CHECK-42-NEXT: -- (Test36::B, 8) vtable address --
>> // CHECK-42-NEXT: 11 | void Test36::C::f()
>> // CHECK-42-NEXT: [this adjustment: 0 non-virtual, -24 vcall offset offset]
>> +//
>> +// CHECK-42: VTable indices for 'Test36::D' (1 entries).
>> +// CHECK-42-NEXT: 1 | void Test36::D::g()
>> struct D : virtual B, C {
>> virtual void g();
>> };
>> @@ -1721,6 +1855,10 @@ namespace Test38 {
>> // CHECK-44-NEXT: -- (Test38::B, 0) vtable address --
>> // CHECK-44-NEXT: 5 | void *Test38::B::foo()
>> // CHECK-44-NEXT: 6 | const void *Test38::B::foo() const
>> + //
>> + // CHECK-44: VTable indices for 'Test38::B' (2 entries).
>> + // CHECK-44-NEXT: 0 | void *Test38::B::foo()
>> + // CHECK-44-NEXT: 1 | const void *Test38::B::foo() const
>> class B : virtual public A {
>> void *foo();
>> const void *foo() const;
>> @@ -1741,6 +1879,9 @@ namespace Test39 {
>> // CHECK-45-NEXT: -- (Test39::B, 0) vtable address --
>> // CHECK-45-NEXT: 2 | void Test39::A::foo() [deleted]
>> // CHECK-45-NEXT: 3 | void Test39::B::foo2()
>> + //
>> + // CHECK-45: VTable indices for 'Test39::B' (1 entries).
>> + // CHECK-45-NEXT: 1 | void Test39::B::foo2()
>> struct B: A {
>> virtual void foo2();
>> };
>>
>>
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