r191523 - Abstract out the emission of vtables, add basic support for vtable emission when using -cxx-abi microsoft

Timur Iskhodzhanov timurrrr at google.com
Fri Sep 27 08:59:13 PDT 2013


Interesting. How do I diagnose?
Is it using a 64-bit Win toolchain?

2013/9/27 jahanian <fjahanian at apple.com>:
> This patch causes a test failure in a win64 buildbot.
>
> C:\public\win64\src\tools\clang\test\CodeGenCXX\microsoft-abi-multiple-nonvirtual-inheritance.cpp:165:12:
> error: expected string not found in input
>    // CHECK: %[[VFPTR:.*]] = bitcast %struct.ChildOverride* %this1 to [1 x
> i8*]**
>              ^
>   <stdin>:168:36: note: scanning from here
>    %2 = load %struct.ChildOverride** %1
>                                      ^
>   <stdin>:175:2: note: possible intended match here
>    %9 = bitcast %struct.ChildOverride* %2 to [1 x i8*]**
>    ^
>
>
> - Fariborz
>
> On Sep 27, 2013, at 7:48 AM, Timur Iskhodzhanov <timurrrr at google.com> wrote:
>
> Author: timurrrr
> Date: Fri Sep 27 09:48:01 2013
> New Revision: 191523
>
> URL: http://llvm.org/viewvc/llvm-project?rev=191523&view=rev
> Log:
> Abstract out the emission of vtables, add basic support for vtable emission
> when using -cxx-abi microsoft
>
> Reviewed at http://llvm-reviews.chandlerc.com/D1532
>
> Added:
>    cfe/trunk/test/CodeGenCXX/microsoft-abi-constexpr-vs-inheritance.cpp
> Modified:
>    cfe/trunk/include/clang/AST/Mangle.h
>    cfe/trunk/include/clang/AST/VTableBuilder.h
>    cfe/trunk/lib/AST/ItaniumMangle.cpp
>    cfe/trunk/lib/AST/MicrosoftMangle.cpp
>    cfe/trunk/lib/AST/VTableBuilder.cpp
>    cfe/trunk/lib/CodeGen/CGCXX.cpp
>    cfe/trunk/lib/CodeGen/CGCXXABI.h
>    cfe/trunk/lib/CodeGen/CGClass.cpp
>    cfe/trunk/lib/CodeGen/CGDebugInfo.cpp
>    cfe/trunk/lib/CodeGen/CGExprConstant.cpp
>    cfe/trunk/lib/CodeGen/CGVTT.cpp
>    cfe/trunk/lib/CodeGen/CGVTables.cpp
>    cfe/trunk/lib/CodeGen/CGVTables.h
>    cfe/trunk/lib/CodeGen/CodeGenModule.h
>    cfe/trunk/lib/CodeGen/ItaniumCXXABI.cpp
>    cfe/trunk/lib/CodeGen/MicrosoftCXXABI.cpp
>
> cfe/trunk/test/CodeGenCXX/microsoft-abi-multiple-nonvirtual-inheritance.cpp
>    cfe/trunk/test/CodeGenCXX/microsoft-abi-structors.cpp
>    cfe/trunk/test/CodeGenCXX/microsoft-abi-virtual-inheritance.cpp
>
> cfe/trunk/test/CodeGenCXX/microsoft-abi-vtables-multiple-nonvirtual-inheritance.cpp
>    cfe/trunk/test/CodeGenCXX/microsoft-abi-vtables-single-inheritance.cpp
>    cfe/trunk/test/CodeGenCXX/microsoft-abi-vtables-virtual-inheritance.cpp
>    cfe/trunk/test/CodeGenCXX/virtual-base-destructor-call.cpp
>
> Modified: cfe/trunk/include/clang/AST/Mangle.h
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/Mangle.h?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/include/clang/AST/Mangle.h (original)
> +++ cfe/trunk/include/clang/AST/Mangle.h Fri Sep 27 09:48:01 2013
> @@ -106,8 +106,16 @@ public:
>                                   raw_ostream &) = 0;
>   virtual void mangleReferenceTemporary(const VarDecl *D,
>                                         raw_ostream &) = 0;
> +  // FIXME: Some of these objects only exist in select ABIs. We should
> probably
> +  // only declare them in ABI-specific manglers?
>   virtual void mangleCXXVTable(const CXXRecordDecl *RD,
>                                raw_ostream &) = 0;
> +  /// \brief Mangle vftable symbols.  Only a subset of the bases along the
> path
> +  /// to the vftable are included in the name.  It's up to the caller to
> pick
> +  /// them correctly.
> +  virtual void mangleCXXVFTable(const CXXRecordDecl *Derived,
> +                                ArrayRef<const CXXRecordDecl *> BasePath,
> +                                raw_ostream &Out) = 0;
>   virtual void mangleCXXVTT(const CXXRecordDecl *RD,
>                             raw_ostream &) = 0;
>   /// \brief Mangle vbtable symbols.  Only a subset of the bases along the
> path
>
> Modified: cfe/trunk/include/clang/AST/VTableBuilder.h
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/AST/VTableBuilder.h?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/include/clang/AST/VTableBuilder.h (original)
> +++ cfe/trunk/include/clang/AST/VTableBuilder.h Fri Sep 27 09:48:01 2013
> @@ -329,13 +329,6 @@ public:
>   VTableContext(ASTContext &Context);
>   ~VTableContext();
>
> -  bool isMicrosoftABI() const {
> -    // FIXME: Currently, this method is only used in the VTableContext and
> -    // VTableBuilder code which is ABI-specific. Probably we can remove it
> -    // when we add a layer of abstraction for vtable generation.
> -    return IsMicrosoftABI;
> -  }
> -
>   const VTableLayout &getVTableLayout(const CXXRecordDecl *RD) {
>     computeVTableRelatedInformation(RD);
>     assert(VTableLayouts.count(RD) && "No layout for this record decl!");
> @@ -377,11 +370,13 @@ unsigned GetVBTableIndex(const CXXRecord
> struct VFPtrInfo {
>   typedef SmallVector<const CXXRecordDecl *, 1> BasePath;
>
> +  // Don't pass the PathToMangle as it should be calculated later.
>   VFPtrInfo(CharUnits VFPtrOffset, const BasePath &PathToBaseWithVFPtr)
>       : VBTableIndex(0), LastVBase(0), VFPtrOffset(VFPtrOffset),
>         PathToBaseWithVFPtr(PathToBaseWithVFPtr),
> VFPtrFullOffset(VFPtrOffset) {
>   }
>
> +  // Don't pass the PathToMangle as it should be calculated later.
>   VFPtrInfo(uint64_t VBTableIndex, const CXXRecordDecl *LastVBase,
>             CharUnits VFPtrOffset, const BasePath &PathToBaseWithVFPtr,
>             CharUnits VFPtrFullOffset)
> @@ -404,9 +399,13 @@ struct VFPtrInfo {
>   CharUnits VFPtrOffset;
>
>   /// This holds the base classes path from the complete type to the first
> base
> -  /// with the given vfptr offset.
> +  /// with the given vfptr offset, in the base-to-derived order.
>   BasePath PathToBaseWithVFPtr;
>
> +  /// This holds the subset of records that need to be mangled into the
> vftable
> +  /// symbol name in order to get a unique name, in the derived-to-base
> order.
> +  BasePath PathToMangle;
> +
>   /// This is the full offset of the vfptr from the start of the complete
> type.
>   CharUnits VFPtrFullOffset;
> };
>
> Modified: cfe/trunk/lib/AST/ItaniumMangle.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/ItaniumMangle.cpp?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/lib/AST/ItaniumMangle.cpp (original)
> +++ cfe/trunk/lib/AST/ItaniumMangle.cpp Fri Sep 27 09:48:01 2013
> @@ -137,6 +137,9 @@ public:
>                                 raw_ostream &);
>   void mangleCXXVTable(const CXXRecordDecl *RD,
>                        raw_ostream &);
> +  void mangleCXXVFTable(const CXXRecordDecl *Derived,
> +                        ArrayRef<const CXXRecordDecl *> BasePath,
> +                        raw_ostream &Out);
>   void mangleCXXVTT(const CXXRecordDecl *RD,
>                     raw_ostream &);
>   void mangleCXXVBTable(const CXXRecordDecl *Derived,
> @@ -3772,6 +3775,14 @@ void ItaniumMangleContext::mangleCXXVTab
>   Mangler.mangleNameOrStandardSubstitution(RD);
> }
>
> +void
> +ItaniumMangleContext::mangleCXXVFTable(const CXXRecordDecl *Derived,
> +                                       ArrayRef<const CXXRecordDecl *>
> BasePath,
> +                                       raw_ostream &Out) {
> +  llvm_unreachable(
> +      "The Itanium C++ ABI does not have vftables (use vtables instead)!");
> +}
> +
> void ItaniumMangleContext::mangleCXXVTT(const CXXRecordDecl *RD,
>                                         raw_ostream &Out) {
>   // <special-name> ::= TT <type>  # VTT structure
>
> Modified: cfe/trunk/lib/AST/MicrosoftMangle.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/MicrosoftMangle.cpp?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/lib/AST/MicrosoftMangle.cpp (original)
> +++ cfe/trunk/lib/AST/MicrosoftMangle.cpp Fri Sep 27 09:48:01 2013
> @@ -188,6 +188,9 @@ public:
>                                   raw_ostream &);
>   virtual void mangleCXXVTable(const CXXRecordDecl *RD,
>                                raw_ostream &);
> +  virtual void mangleCXXVFTable(const CXXRecordDecl *Derived,
> +                                ArrayRef<const CXXRecordDecl *> BasePath,
> +                                raw_ostream &Out);
>   virtual void mangleCXXVTT(const CXXRecordDecl *RD,
>                             raw_ostream &);
>   virtual void mangleCXXVBTable(const CXXRecordDecl *Derived,
> @@ -1900,16 +1903,26 @@ void MicrosoftMangleContext::mangleCXXDt
>
> void MicrosoftMangleContext::mangleCXXVTable(const CXXRecordDecl *RD,
>                                              raw_ostream &Out) {
> +  llvm_unreachable(
> +      "The Microsoft C++ ABI does not have vtables (use vftables
> instead)!");
> +}
> +
> +void MicrosoftMangleContext::mangleCXXVFTable(
> +    const CXXRecordDecl *Derived, ArrayRef<const CXXRecordDecl *> BasePath,
> +    raw_ostream &Out) {
>   // <mangled-name> ::= ?_7 <class-name> <storage-class>
>   //                    <cvr-qualifiers> [<name>] @
>   // NOTE: <cvr-qualifiers> here is always 'B' (const). <storage-class>
>   // is always '6' for vftables.
>   MicrosoftCXXNameMangler Mangler(*this, Out);
>   Mangler.getStream() << "\01??_7";
> -  Mangler.mangleName(RD);
> -  Mangler.getStream() << "6B";  // '6' for vftable, 'B' for const.
> -  // TODO: If the class has more than one vtable, mangle in the class it
> came
> -  // from.
> +  Mangler.mangleName(Derived);
> +  Mangler.getStream() << "6B"; // '6' for vftable, 'B' for const.
> +  for (ArrayRef<const CXXRecordDecl *>::iterator I = BasePath.begin(),
> +                                                 E = BasePath.end();
> +       I != E; ++I) {
> +    Mangler.mangleName(*I);
> +  }
>   Mangler.getStream() << '@';
> }
>
>
> Modified: cfe/trunk/lib/AST/VTableBuilder.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/AST/VTableBuilder.cpp?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/lib/AST/VTableBuilder.cpp (original)
> +++ cfe/trunk/lib/AST/VTableBuilder.cpp Fri Sep 27 09:48:01 2013
> @@ -999,10 +999,6 @@ public:
>       dumpLayout(llvm::errs());
>   }
>
> -  bool isMicrosoftABI() const {
> -    return VTables.isMicrosoftABI();
> -  }
> -
>   uint64_t getNumThunks() const {
>     return Thunks.size();
>   }
> @@ -1157,7 +1153,7 @@ void VTableBuilder::ComputeThisAdjustmen
>     // Add it.
>     VTableThunks[VTableIndex].This = ThisAdjustment;
>
> -    if (isa<CXXDestructorDecl>(MD) && !isMicrosoftABI()) {
> +    if (isa<CXXDestructorDecl>(MD)) {
>       // Add an adjustment for the deleting destructor as well.
>       VTableThunks[VTableIndex + 1].This = ThisAdjustment;
>     }
> @@ -1188,8 +1184,6 @@ void VTableBuilder::ComputeThisAdjustmen
>       break;
>     case VTableComponent::CK_DeletingDtorPointer:
>       // We've already added the thunk when we saw the complete dtor
> pointer.
> -      // FIXME: check how this works in the Microsoft ABI
> -      // while working on the multiple inheritance patch.
>       continue;
>     }
>
> @@ -1326,15 +1320,9 @@ VTableBuilder::AddMethod(const CXXMethod
>     assert(ReturnAdjustment.isEmpty() &&
>            "Destructor can't have return adjustment!");
>
> -    // FIXME: Should probably add a layer of abstraction for vtable
> generation.
> -    if (!isMicrosoftABI()) {
> -      // Add both the complete destructor and the deleting destructor.
> -      Components.push_back(VTableComponent::MakeCompleteDtor(DD));
> -      Components.push_back(VTableComponent::MakeDeletingDtor(DD));
> -    } else {
> -      // Add the scalar deleting destructor.
> -      Components.push_back(VTableComponent::MakeDeletingDtor(DD));
> -    }
> +    // Add both the complete destructor and the deleting destructor.
> +    Components.push_back(VTableComponent::MakeCompleteDtor(DD));
> +    Components.push_back(VTableComponent::MakeDeletingDtor(DD));
>   } else {
>     // Add the return adjustment if necessary.
>     if (!ReturnAdjustment.isEmpty())
> @@ -1693,18 +1681,12 @@ VTableBuilder::LayoutPrimaryAndSecondary
>   if (Base.getBase() == MostDerivedClass)
>     VBaseOffsetOffsets = Builder.getVBaseOffsetOffsets();
>
> -  // FIXME: Should probably add a layer of abstraction for vtable
> generation.
> -  if (!isMicrosoftABI()) {
> -    // Add the offset to top.
> -    CharUnits OffsetToTop = MostDerivedClassOffset - OffsetInLayoutClass;
> -    Components.push_back(VTableComponent::MakeOffsetToTop(OffsetToTop));
> +  // Add the offset to top.
> +  CharUnits OffsetToTop = MostDerivedClassOffset - OffsetInLayoutClass;
> +  Components.push_back(VTableComponent::MakeOffsetToTop(OffsetToTop));
>
> -    // Next, add the RTTI.
> -    Components.push_back(VTableComponent::MakeRTTI(MostDerivedClass));
> -  } else {
> -    // FIXME: unclear what to do with RTTI in MS ABI as emitting it
> anywhere
> -    // breaks the vftable layout. Just skip RTTI for now, can't mangle
> anyway.
> -  }
> +  // Next, add the RTTI.
> +  Components.push_back(VTableComponent::MakeRTTI(MostDerivedClass));
>
>   uint64_t AddressPoint = Components.size();
>
> @@ -1722,16 +1704,10 @@ VTableBuilder::LayoutPrimaryAndSecondary
>       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;
> -        }
> +        MethodVTableIndices[GlobalDecl(DD, Dtor_Complete)]
> +            = MI.VTableIndex - AddressPoint;
> +        MethodVTableIndices[GlobalDecl(DD, Dtor_Deleting)]
> +            = MI.VTableIndex + 1 - AddressPoint;
>       } else {
>         MethodVTableIndices[MD] = MI.VTableIndex - AddressPoint;
>       }
> @@ -2044,8 +2020,6 @@ void VTableBuilder::dumpLayout(raw_ostre
>       Out << DD->getQualifiedNameAsString();
>       if (IsComplete)
>         Out << "() [complete]";
> -      else if (isMicrosoftABI())
> -        Out << "() [scalar deleting]";
>       else
>         Out << "() [deleting]";
>
> @@ -2230,18 +2204,11 @@ void VTableBuilder::dumpLayout(raw_ostre
>                                   MD);
>
>     if (const CXXDestructorDecl *DD = dyn_cast<CXXDestructorDecl>(MD)) {
> -      // FIXME: Should add a layer of abstraction for vtable generation.
> -      if (!isMicrosoftABI()) {
> -        GlobalDecl GD(DD, Dtor_Complete);
> -        assert(MethodVTableIndices.count(GD));
> -        uint64_t VTableIndex = MethodVTableIndices[GD];
> -        IndicesMap[VTableIndex] = MethodName + " [complete]";
> -        IndicesMap[VTableIndex + 1] = MethodName + " [deleting]";
> -      } else {
> -        GlobalDecl GD(DD, Dtor_Deleting);
> -        assert(MethodVTableIndices.count(GD));
> -        IndicesMap[MethodVTableIndices[GD]] = MethodName + " [scalar
> 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 {
>       assert(MethodVTableIndices.count(MD));
>       IndicesMap[MethodVTableIndices[MD]] = MethodName;
> @@ -2352,10 +2319,12 @@ static VTableLayout *CreateVTableLayout(
>                           VTableThunks.size(),
>                           VTableThunks.data(),
>                           Builder.getAddressPoints(),
> -                          Builder.isMicrosoftABI());
> +                          /*IsMicrosoftABI=*/false);
> }
>
> void VTableContext::computeVTableRelatedInformation(const CXXRecordDecl *RD)
> {
> +  assert(!IsMicrosoftABI && "Shouldn't be called in this ABI!");
> +
>   const VTableLayout *&Entry = VTableLayouts[RD];
>
>   // Check if we've computed this information before.
> @@ -3132,6 +3101,55 @@ static void EnumerateVFPtrs(
>   }
> }
>
> +/// CalculatePathToMangle - Calculate the subset of records that should be
> used
> +/// to mangle the vftable for the given vfptr.
> +/// Should only be called if a class has multiple vftables.
> +static void
> +CalculatePathToMangle(const CXXRecordDecl *RD, VFPtrInfo &VFPtr) {
> +  // FIXME: In some rare cases this code produces a slightly incorrect
> mangling.
> +  // It's very likely that the vbtable mangling code can be adjusted to
> mangle
> +  // both vftables and vbtables correctly.
> +
> +  VFPtrInfo::BasePath &FullPath = VFPtr.PathToBaseWithVFPtr;
> +  if (FullPath.empty()) {
> +    // Mangle the class's own vftable.
> +    assert(RD->getNumVBases() &&
> +           "Something's wrong: if the most derived "
> +           "class has more than one vftable, it can only have its own "
> +           "vftable if it has vbases");
> +    VFPtr.PathToMangle.push_back(RD);
> +    return;
> +  }
> +
> +  unsigned Begin = 0;
> +
> +  // First, skip all the bases before the vbase.
> +  if (VFPtr.LastVBase) {
> +    while (FullPath[Begin] != VFPtr.LastVBase) {
> +      Begin++;
> +      assert(Begin < FullPath.size());
> +    }
> +  }
> +
> +  // Then, put the rest of the base path in the reverse order.
> +  for (unsigned I = FullPath.size(); I != Begin; --I) {
> +    const CXXRecordDecl *CurBase = FullPath[I - 1],
> +                        *ItsBase = (I == 1) ? RD : FullPath[I - 2];
> +    bool BaseIsVirtual = false;
> +    for (CXXRecordDecl::base_class_const_iterator J =
> ItsBase->bases_begin(),
> +         F = ItsBase->bases_end(); J != F; ++J) {
> +      if (J->getType()->getAsCXXRecordDecl() == CurBase) {
> +        BaseIsVirtual = J->isVirtual();
> +        break;
> +      }
> +    }
> +
> +    // Should skip the current base if it is a non-virtual base with no
> siblings.
> +    if (BaseIsVirtual || ItsBase->getNumBases() != 1)
> +      VFPtr.PathToMangle.push_back(CurBase);
> +  }
> +}
> +
> static void EnumerateVFPtrs(ASTContext &Context, const CXXRecordDecl
> *ForClass,
>                             MicrosoftVFTableContext::VFPtrListTy &Result) {
>   Result.clear();
> @@ -3140,6 +3158,10 @@ static void EnumerateVFPtrs(ASTContext &
>   EnumerateVFPtrs(Context, ForClass, ClassLayout,
>                   BaseSubobject(ForClass, CharUnits::Zero()), 0,
>                   VFPtrInfo::BasePath(), VisitedVBases, Result);
> +  if (Result.size() > 1) {
> +    for (unsigned I = 0, E = Result.size(); I != E; ++I)
> +      CalculatePathToMangle(ForClass, Result[I]);
> +  }
> }
>
> void MicrosoftVFTableContext::computeVTableRelatedInformation(
>
> Modified: cfe/trunk/lib/CodeGen/CGCXX.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGCXX.cpp?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGCXX.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGCXX.cpp Fri Sep 27 09:48:01 2013
> @@ -280,7 +280,7 @@ static llvm::Value *BuildAppleKextVirtua
>          "No kext in Microsoft ABI");
>   GD = GD.getCanonicalDecl();
>   CodeGenModule &CGM = CGF.CGM;
> -  llvm::Value *VTable = CGM.getVTables().GetAddrOfVTable(RD);
> +  llvm::Value *VTable = CGM.getCXXABI().getAddrOfVTable(RD, CharUnits());
>   Ty = Ty->getPointerTo()->getPointerTo();
>   VTable = CGF.Builder.CreateBitCast(VTable, Ty);
>   assert(VTable && "BuildVirtualCall = kext vtbl pointer is null");
>
> Modified: cfe/trunk/lib/CodeGen/CGCXXABI.h
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGCXXABI.h?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGCXXABI.h (original)
> +++ cfe/trunk/lib/CodeGen/CGCXXABI.h Fri Sep 27 09:48:01 2013
> @@ -303,6 +303,29 @@ public:
>                                    CallExpr::const_arg_iterator ArgBeg,
>                                    CallExpr::const_arg_iterator ArgEnd) = 0;
>
> +  /// Emits the VTable definitions required for the given record type.
> +  virtual void emitVTableDefinitions(CodeGenVTables &CGVT,
> +                                     const CXXRecordDecl *RD) = 0;
> +
> +  /// Get the address point of the vtable for the given base subobject
> while
> +  /// building a constructor or a destructor. On return, NeedsVirtualOffset
> +  /// tells if a virtual base adjustment is needed in order to get the
> offset
> +  /// of the base subobject.
> +  virtual llvm::Value *getVTableAddressPointInStructor(
> +      CodeGenFunction &CGF, const CXXRecordDecl *RD, BaseSubobject Base,
> +      const CXXRecordDecl *NearestVBase, bool &NeedsVirtualOffset) = 0;
> +
> +  /// Get the address point of the vtable for the given base subobject
> while
> +  /// building a constexpr.
> +  virtual llvm::Constant *
> +  getVTableAddressPointForConstExpr(BaseSubobject Base,
> +                                    const CXXRecordDecl *VTableClass) = 0;
> +
> +  /// Get the address of the vtable for the given record decl which should
> be
> +  /// used for the vptr at the given offset in RD.
> +  virtual llvm::GlobalVariable *getAddrOfVTable(const CXXRecordDecl *RD,
> +                                                CharUnits VPtrOffset) = 0;
> +
>   /// Build a virtual function pointer in the ABI-specific way.
>   virtual llvm::Value *getVirtualFunctionPointer(CodeGenFunction &CGF,
>                                                  GlobalDecl GD,
> @@ -319,9 +342,7 @@ public:
>   /// Emit any tables needed to implement virtual inheritance.  For Itanium,
>   /// this emits virtual table tables.  For the MSVC++ ABI, this emits
> virtual
>   /// base tables.
> -  virtual void
> -      EmitVirtualInheritanceTables(llvm::GlobalVariable::LinkageTypes
> Linkage,
> -                                   const CXXRecordDecl *RD) = 0;
> +  virtual void emitVirtualInheritanceTables(const CXXRecordDecl *RD) = 0;
>
>   virtual void EmitReturnFromThunk(CodeGenFunction &CGF,
>                                    RValue RV, QualType ResultType);
>
> Modified: cfe/trunk/lib/CodeGen/CGClass.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGClass.cpp?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGClass.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGClass.cpp Fri Sep 27 09:48:01 2013
> @@ -1878,39 +1878,19 @@ CodeGenFunction::InitializeVTablePointer
>                                          const CXXRecordDecl *NearestVBase,
>                                          CharUnits OffsetFromNearestVBase,
>                                          const CXXRecordDecl *VTableClass) {
> -  const CXXRecordDecl *RD = Base.getBase();
> -
>   // Compute the address point.
> -  llvm::Value *VTableAddressPoint;
> -
> -  bool NeedsVTTParam = CGM.getCXXABI().NeedsVTTParameter(CurGD);
> -
> -  // Check if we need to use a vtable from the VTT.
> -  if (NeedsVTTParam && (RD->getNumVBases() || NearestVBase)) {
> -    // Get the secondary vpointer index.
> -    uint64_t VirtualPointerIndex =
> -     CGM.getVTables().getSecondaryVirtualPointerIndex(VTableClass, Base);
> -
> -    /// Load the VTT.
> -    llvm::Value *VTT = LoadCXXVTT();
> -    if (VirtualPointerIndex)
> -      VTT = Builder.CreateConstInBoundsGEP1_64(VTT, VirtualPointerIndex);
> -
> -    // And load the address point from the VTT.
> -    VTableAddressPoint = Builder.CreateLoad(VTT);
> -  } else {
> -    llvm::Constant *VTable = CGM.getVTables().GetAddrOfVTable(VTableClass);
> -    uint64_t AddressPoint =
> -
> CGM.getVTableContext().getVTableLayout(VTableClass).getAddressPoint(Base);
> -    VTableAddressPoint =
> -      Builder.CreateConstInBoundsGEP2_64(VTable, 0, AddressPoint);
> -  }
> +  bool NeedsVirtualOffset;
> +  llvm::Value *VTableAddressPoint =
> +      CGM.getCXXABI().getVTableAddressPointInStructor(
> +          *this, VTableClass, Base, NearestVBase, NeedsVirtualOffset);
> +  if (!VTableAddressPoint)
> +    return;
>
>   // Compute where to store the address point.
>   llvm::Value *VirtualOffset = 0;
>   CharUnits NonVirtualOffset = CharUnits::Zero();
>
> -  if (NeedsVTTParam && NearestVBase) {
> +  if (NeedsVirtualOffset) {
>     // We need to use the virtual base offset offset because the virtual
> base
>     // might have a different offset in the most derived class.
>     VirtualOffset = CGM.getCXXABI().GetVirtualBaseClassOffset(*this,
>
> Modified: cfe/trunk/lib/CodeGen/CGDebugInfo.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGDebugInfo.cpp?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGDebugInfo.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGDebugInfo.cpp Fri Sep 27 09:48:01 2013
> @@ -1053,7 +1053,11 @@ CGDebugInfo::CreateCXXMemberFunction(con
>
>     // It doesn't make sense to give a virtual destructor a vtable index,
>     // since a single destructor has two entries in the vtable.
> -    if (!isa<CXXDestructorDecl>(Method))
> +    // FIXME: Add proper support for debug info for virtual calls in
> +    // the Microsoft ABI, where we may use multiple vptrs to make a vftable
> +    // lookup if we have multiple or virtual inheritance.
> +    if (!isa<CXXDestructorDecl>(Method) &&
> +        !CGM.getTarget().getCXXABI().isMicrosoft())
>       VIndex = CGM.getVTableContext().getMethodVTableIndex(Method);
>     ContainingType = RecordTy;
>   }
>
> Modified: cfe/trunk/lib/CodeGen/CGExprConstant.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGExprConstant.cpp?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGExprConstant.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGExprConstant.cpp Fri Sep 27 09:48:01 2013
> @@ -53,9 +53,6 @@ private:
>     NextFieldOffsetInChars(CharUnits::Zero()),
>     LLVMStructAlignment(CharUnits::One()) { }
>
> -  void AppendVTablePointer(BaseSubobject Base, llvm::Constant *VTable,
> -                           const CXXRecordDecl *VTableClass);
> -
>   void AppendField(const FieldDecl *Field, uint64_t FieldOffset,
>                    llvm::Constant *InitExpr);
>
> @@ -72,8 +69,7 @@ private:
>
>   bool Build(InitListExpr *ILE);
>   void Build(const APValue &Val, const RecordDecl *RD, bool IsPrimaryBase,
> -             llvm::Constant *VTable, const CXXRecordDecl *VTableClass,
> -             CharUnits BaseOffset);
> +             const CXXRecordDecl *VTableClass, CharUnits BaseOffset);
>   llvm::Constant *Finalize(QualType Ty);
>
>   CharUnits getAlignment(const llvm::Constant *C) const {
> @@ -88,23 +84,6 @@ private:
>   }
> };
>
> -void ConstStructBuilder::AppendVTablePointer(BaseSubobject Base,
> -                                             llvm::Constant *VTable,
> -                                             const CXXRecordDecl
> *VTableClass) {
> -  // Find the appropriate vtable within the vtable group.
> -  uint64_t AddressPoint =
> -
> CGM.getVTableContext().getVTableLayout(VTableClass).getAddressPoint(Base);
> -  llvm::Value *Indices[] = {
> -    llvm::ConstantInt::get(CGM.Int64Ty, 0),
> -    llvm::ConstantInt::get(CGM.Int64Ty, AddressPoint)
> -  };
> -  llvm::Constant *VTableAddressPoint =
> -    llvm::ConstantExpr::getInBoundsGetElementPtr(VTable, Indices);
> -
> -  // Add the vtable at the start of the object.
> -  AppendBytes(Base.getBaseOffset(), VTableAddressPoint);
> -}
> -
> void ConstStructBuilder::
> AppendField(const FieldDecl *Field, uint64_t FieldOffset,
>             llvm::Constant *InitCst) {
> @@ -424,15 +403,19 @@ struct BaseInfo {
> }
>
> void ConstStructBuilder::Build(const APValue &Val, const RecordDecl *RD,
> -                               bool IsPrimaryBase, llvm::Constant *VTable,
> +                               bool IsPrimaryBase,
>                                const CXXRecordDecl *VTableClass,
>                                CharUnits Offset) {
>   const ASTRecordLayout &Layout = CGM.getContext().getASTRecordLayout(RD);
>
>   if (const CXXRecordDecl *CD = dyn_cast<CXXRecordDecl>(RD)) {
>     // Add a vtable pointer, if we need one and it hasn't already been
> added.
> -    if (CD->isDynamicClass() && !IsPrimaryBase)
> -      AppendVTablePointer(BaseSubobject(CD, Offset), VTable, VTableClass);
> +    if (CD->isDynamicClass() && !IsPrimaryBase) {
> +      llvm::Constant *VTableAddressPoint =
> +          CGM.getCXXABI().getVTableAddressPointForConstExpr(
> +              BaseSubobject(CD, Offset), VTableClass);
> +      AppendBytes(Offset, VTableAddressPoint);
> +    }
>
>     // Accumulate and sort bases, in order to visit them in address order,
> which
>     // may not be the same as declaration order.
> @@ -453,7 +436,7 @@ void ConstStructBuilder::Build(const APV
>
>       bool IsPrimaryBase = Layout.getPrimaryBase() == Base.Decl;
>       Build(Val.getStructBase(Base.Index), Base.Decl, IsPrimaryBase,
> -            VTable, VTableClass, Offset + Base.Offset);
> +            VTableClass, Offset + Base.Offset);
>     }
>   }
>
> @@ -560,11 +543,7 @@ llvm::Constant *ConstStructBuilder::Buil
>
>   const RecordDecl *RD = ValTy->castAs<RecordType>()->getDecl();
>   const CXXRecordDecl *CD = dyn_cast<CXXRecordDecl>(RD);
> -  llvm::Constant *VTable = 0;
> -  if (CD && CD->isDynamicClass())
> -    VTable = CGM.getVTables().GetAddrOfVTable(CD);
> -
> -  Builder.Build(Val, RD, false, VTable, CD, CharUnits::Zero());
> +  Builder.Build(Val, RD, false, CD, CharUnits::Zero());
>
>   return Builder.Finalize(ValTy);
> }
>
> Modified: cfe/trunk/lib/CodeGen/CGVTT.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGVTT.cpp?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGVTT.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGVTT.cpp Fri Sep 27 09:48:01 2013
> @@ -19,7 +19,8 @@ using namespace clang;
> using namespace CodeGen;
>
> static llvm::Constant *
> -GetAddrOfVTTVTable(CodeGenVTables &CGVT, const CXXRecordDecl
> *MostDerivedClass,
> +GetAddrOfVTTVTable(CodeGenVTables &CGVT, CodeGenModule &CGM,
> +                   const CXXRecordDecl *MostDerivedClass,
>                    const VTTVTable &VTable,
>                    llvm::GlobalVariable::LinkageTypes Linkage,
>                    llvm::DenseMap<BaseSubobject, uint64_t> &AddressPoints) {
> @@ -27,7 +28,7 @@ GetAddrOfVTTVTable(CodeGenVTables &CGVT,
>     assert(VTable.getBaseOffset().isZero() &&
>            "Most derived class vtable must have a zero offset!");
>     // This is a regular vtable.
> -    return CGVT.GetAddrOfVTable(MostDerivedClass);
> +    return CGM.getCXXABI().getAddrOfVTable(MostDerivedClass, CharUnits());
>   }
>
>   return CGVT.GenerateConstructionVTable(MostDerivedClass,
> @@ -52,7 +53,7 @@ CodeGenVTables::EmitVTTDefinition(llvm::
>   for (const VTTVTable *i = Builder.getVTTVTables().begin(),
>                        *e = Builder.getVTTVTables().end(); i != e; ++i) {
>     VTableAddressPoints.push_back(VTableAddressPointsMapTy());
> -    VTables.push_back(GetAddrOfVTTVTable(*this, RD, *i, Linkage,
> +    VTables.push_back(GetAddrOfVTTVTable(*this, CGM, RD, *i, Linkage,
>                                          VTableAddressPoints.back()));
>   }
>
> @@ -106,7 +107,7 @@ llvm::GlobalVariable *CodeGenVTables::Ge
>   StringRef Name = OutName.str();
>
>   // This will also defer the definition of the VTT.
> -  (void) GetAddrOfVTable(RD);
> +  (void) CGM.getCXXABI().getAddrOfVTable(RD, CharUnits());
>
>   VTTBuilder Builder(CGM.getContext(), RD, /*GenerateDefinition=*/false);
>
>
> Modified: cfe/trunk/lib/CodeGen/CGVTables.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGVTables.cpp?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGVTables.cpp (original)
> +++ cfe/trunk/lib/CodeGen/CGVTables.cpp Fri Sep 27 09:48:01 2013
> @@ -498,6 +498,7 @@ void CodeGenVTables::EmitThunks(GlobalDe
>     // FIXME: This is a temporary solution to force generation of vftables
> in
>     // Microsoft ABI. Remove when we thread VFTableContext through CodeGen.
>     VFTContext->getVFPtrOffsets(MD->getParent());
> +    return;
>   }
>
>   const VTableContext::ThunkInfoVectorTy *ThunkInfoVector =
> @@ -629,53 +630,6 @@ CodeGenVTables::CreateVTableInitializer(
>   return llvm::ConstantArray::get(ArrayType, Inits);
> }
>
> -llvm::GlobalVariable *CodeGenVTables::GetAddrOfVTable(const CXXRecordDecl
> *RD) {
> -  llvm::GlobalVariable *&VTable = VTables[RD];
> -  if (VTable)
> -    return VTable;
> -
> -  // Queue up this v-table for possible deferred emission.
> -  CGM.addDeferredVTable(RD);
> -
> -  SmallString<256> OutName;
> -  llvm::raw_svector_ostream Out(OutName);
> -  CGM.getCXXABI().getMangleContext().mangleCXXVTable(RD, Out);
> -  Out.flush();
> -  StringRef Name = OutName.str();
> -
> -  llvm::ArrayType *ArrayType =
> -    llvm::ArrayType::get(CGM.Int8PtrTy,
> -
> VTContext.getVTableLayout(RD).getNumVTableComponents());
> -
> -  VTable =
> -    CGM.CreateOrReplaceCXXRuntimeVariable(Name, ArrayType,
> -
> llvm::GlobalValue::ExternalLinkage);
> -  VTable->setUnnamedAddr(true);
> -  return VTable;
> -}
> -
> -void
> -CodeGenVTables::EmitVTableDefinition(llvm::GlobalVariable *VTable,
> -                                     llvm::GlobalVariable::LinkageTypes
> Linkage,
> -                                     const CXXRecordDecl *RD) {
> -  const VTableLayout &VTLayout = VTContext.getVTableLayout(RD);
> -
> -  // Create and set the initializer.
> -  llvm::Constant *Init =
> -    CreateVTableInitializer(RD,
> -                            VTLayout.vtable_component_begin(),
> -                            VTLayout.getNumVTableComponents(),
> -                            VTLayout.vtable_thunk_begin(),
> -                            VTLayout.getNumVTableThunks());
> -  VTable->setInitializer(Init);
> -
> -  // Set the correct linkage.
> -  VTable->setLinkage(Linkage);
> -
> -  // Set the right visibility.
> -  CGM.setTypeVisibility(VTable, RD, CodeGenModule::TVK_ForVTable);
> -}
> -
> llvm::GlobalVariable *
> CodeGenVTables::GenerateConstructionVTable(const CXXRecordDecl *RD,
>                                       const BaseSubobject &Base,
> @@ -818,35 +772,10 @@ CodeGenVTables::GenerateClassData(const
>   if (CGDebugInfo *DI = CGM.getModuleDebugInfo())
>     DI->completeClassData(RD);
>
> -  if (VFTContext.isValid()) {
> -    // FIXME: This is a temporary solution to force generation of vftables
> in
> -    // Microsoft ABI. Remove when we thread VFTableContext through CodeGen.
> -    VFTContext->getVFPtrOffsets(RD);
> -  }
> -
> -  // First off, check whether we've already emitted the v-table and
> -  // associated stuff.
> -  llvm::GlobalVariable *VTable = GetAddrOfVTable(RD);
> -  if (VTable->hasInitializer())
> -    return;
> -
> -  llvm::GlobalVariable::LinkageTypes Linkage = CGM.getVTableLinkage(RD);
> -  EmitVTableDefinition(VTable, Linkage, RD);
> -
>   if (RD->getNumVBases())
> -    CGM.getCXXABI().EmitVirtualInheritanceTables(Linkage, RD);
> +    CGM.getCXXABI().emitVirtualInheritanceTables(RD);
>
> -  // If this is the magic class __cxxabiv1::__fundamental_type_info,
> -  // we will emit the typeinfo for the fundamental types. This is the
> -  // same behaviour as GCC.
> -  const DeclContext *DC = RD->getDeclContext();
> -  if (RD->getIdentifier() &&
> -      RD->getIdentifier()->isStr("__fundamental_type_info") &&
> -      isa<NamespaceDecl>(DC) &&
> -      cast<NamespaceDecl>(DC)->getIdentifier() &&
> -      cast<NamespaceDecl>(DC)->getIdentifier()->isStr("__cxxabiv1") &&
> -      DC->getParent()->isTranslationUnit())
> -    CGM.EmitFundamentalRTTIDescriptors();
> +  CGM.getCXXABI().emitVTableDefinitions(*this, RD);
> }
>
> /// At this point in the translation unit, does it appear that can we
>
> Modified: cfe/trunk/lib/CodeGen/CGVTables.h
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGVTables.h?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CGVTables.h (original)
> +++ cfe/trunk/lib/CodeGen/CGVTables.h Fri Sep 27 09:48:01 2013
> @@ -35,9 +35,6 @@ class CodeGenVTables {
>   // classes?
>   VTableContext VTContext;
>   OwningPtr<MicrosoftVFTableContext> VFTContext;
> -
> -  /// VTables - All the vtables which have been defined.
> -  llvm::DenseMap<const CXXRecordDecl *, llvm::GlobalVariable *> VTables;
>
>   /// VTableAddressPointsMapTy - Address points for a single vtable.
>   typedef llvm::DenseMap<BaseSubobject, uint64_t> VTableAddressPointsMapTy;
> @@ -65,6 +62,7 @@ class CodeGenVTables {
>   /// doesn't contain any incomplete types.
>   void MaybeEmitThunkAvailableExternally(GlobalDecl GD, const ThunkInfo
> &Thunk);
>
> +public:
>   /// CreateVTableInitializer - Create a vtable initializer for the given
> record
>   /// decl.
>   /// \param Components - The vtable components; this is really an array of
> @@ -75,7 +73,6 @@ class CodeGenVTables {
>                                 const VTableLayout::VTableThunkTy
> *VTableThunks,
>                                           unsigned NumVTableThunks);
>
> -public:
>   CodeGenVTables(CodeGenModule &CGM);
>
>   VTableContext &getVTableContext() { return VTContext; }
> @@ -95,14 +92,6 @@ public:
>   /// class decl.
>   uint64_t getAddressPoint(BaseSubobject Base, const CXXRecordDecl *RD);
>
> -  /// GetAddrOfVTable - Get the address of the vtable for the given record
> decl.
> -  llvm::GlobalVariable *GetAddrOfVTable(const CXXRecordDecl *RD);
> -
> -  /// EmitVTableDefinition - Emit the definition of the given vtable.
> -  void EmitVTableDefinition(llvm::GlobalVariable *VTable,
> -                            llvm::GlobalVariable::LinkageTypes Linkage,
> -                            const CXXRecordDecl *RD);
> -
>   /// GenerateConstructionVTable - Generate a construction vtable for the
> given
>   /// base subobject.
>   llvm::GlobalVariable *
>
> Modified: cfe/trunk/lib/CodeGen/CodeGenModule.h
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CodeGenModule.h?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/CodeGenModule.h (original)
> +++ cfe/trunk/lib/CodeGen/CodeGenModule.h Fri Sep 27 09:48:01 2013
> @@ -250,7 +250,6 @@ class CodeGenModule : public CodeGenType
>
>   /// VTables - Holds information about C++ vtables.
>   CodeGenVTables VTables;
> -  friend class CodeGenVTables;
>
>   CGObjCRuntime* ObjCRuntime;
>   CGOpenCLRuntime* OpenCLRuntime;
> @@ -915,6 +914,10 @@ public:
>
>   void EmitVTable(CXXRecordDecl *Class, bool DefinitionRequired);
>
> +  /// EmitFundamentalRTTIDescriptors - Emit the RTTI descriptors for the
> +  /// builtin types.
> +  void EmitFundamentalRTTIDescriptors();
> +
>   /// \brief Appends Opts to the "Linker Options" metadata value.
>   void AppendLinkerOptions(StringRef Opts);
>
> @@ -1068,10 +1071,6 @@ private:
>   /// given type.
>   void EmitFundamentalRTTIDescriptor(QualType Type);
>
> -  /// EmitFundamentalRTTIDescriptors - Emit the RTTI descriptors for the
> -  /// builtin types.
> -  void EmitFundamentalRTTIDescriptors();
> -
>   /// EmitDeferred - Emit any needed decls for which code generation
>   /// was deferred.
>   void EmitDeferred();
>
> Modified: cfe/trunk/lib/CodeGen/ItaniumCXXABI.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/ItaniumCXXABI.cpp?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/ItaniumCXXABI.cpp (original)
> +++ cfe/trunk/lib/CodeGen/ItaniumCXXABI.cpp Fri Sep 27 09:48:01 2013
> @@ -34,6 +34,9 @@ using namespace CodeGen;
>
> namespace {
> class ItaniumCXXABI : public CodeGen::CGCXXABI {
> +  /// VTables - All the vtables which have been defined.
> +  llvm::DenseMap<const CXXRecordDecl *, llvm::GlobalVariable *> VTables;
> +
> protected:
>   bool UseARMMethodPtrABI;
>   bool UseARMGuardVarABI;
> @@ -142,6 +145,20 @@ public:
>                            CallExpr::const_arg_iterator ArgBeg,
>                            CallExpr::const_arg_iterator ArgEnd);
>
> +  void emitVTableDefinitions(CodeGenVTables &CGVT, const CXXRecordDecl
> *RD);
> +
> +  llvm::Value *getVTableAddressPointInStructor(
> +      CodeGenFunction &CGF, const CXXRecordDecl *VTableClass,
> +      BaseSubobject Base, const CXXRecordDecl *NearestVBase,
> +      bool &NeedsVirtualOffset);
> +
> +  llvm::Constant *
> +  getVTableAddressPointForConstExpr(BaseSubobject Base,
> +                                    const CXXRecordDecl *VTableClass);
> +
> +  llvm::GlobalVariable *getAddrOfVTable(const CXXRecordDecl *RD,
> +                                        CharUnits VPtrOffset);
> +
>   llvm::Value *getVirtualFunctionPointer(CodeGenFunction &CGF, GlobalDecl
> GD,
>                                          llvm::Value *This, llvm::Type *Ty);
>
> @@ -150,8 +167,7 @@ public:
>                                  CXXDtorType DtorType, SourceLocation
> CallLoc,
>                                  llvm::Value *This);
>
> -  void EmitVirtualInheritanceTables(llvm::GlobalVariable::LinkageTypes
> Linkage,
> -                                    const CXXRecordDecl *RD);
> +  void emitVirtualInheritanceTables(const CXXRecordDecl *RD);
>
>   StringRef GetPureVirtualCallName() { return "__cxa_pure_virtual"; }
>   StringRef GetDeletedVirtualCallName() { return "__cxa_deleted_virtual"; }
> @@ -888,6 +904,113 @@ void ItaniumCXXABI::EmitConstructorCall(
>                         This, VTT, VTTTy, ArgBeg, ArgEnd);
> }
>
> +void ItaniumCXXABI::emitVTableDefinitions(CodeGenVTables &CGVT,
> +                                          const CXXRecordDecl *RD) {
> +  llvm::GlobalVariable *VTable = getAddrOfVTable(RD, CharUnits());
> +  if (VTable->hasInitializer())
> +    return;
> +
> +  VTableContext &VTContext = CGM.getVTableContext();
> +  const VTableLayout &VTLayout = VTContext.getVTableLayout(RD);
> +  llvm::GlobalVariable::LinkageTypes Linkage = CGM.getVTableLinkage(RD);
> +
> +  // Create and set the initializer.
> +  llvm::Constant *Init = CGVT.CreateVTableInitializer(
> +      RD, VTLayout.vtable_component_begin(),
> VTLayout.getNumVTableComponents(),
> +      VTLayout.vtable_thunk_begin(), VTLayout.getNumVTableThunks());
> +  VTable->setInitializer(Init);
> +
> +  // Set the correct linkage.
> +  VTable->setLinkage(Linkage);
> +
> +  // Set the right visibility.
> +  CGM.setTypeVisibility(VTable, RD, CodeGenModule::TVK_ForVTable);
> +
> +  // If this is the magic class __cxxabiv1::__fundamental_type_info,
> +  // we will emit the typeinfo for the fundamental types. This is the
> +  // same behaviour as GCC.
> +  const DeclContext *DC = RD->getDeclContext();
> +  if (RD->getIdentifier() &&
> +      RD->getIdentifier()->isStr("__fundamental_type_info") &&
> +      isa<NamespaceDecl>(DC) && cast<NamespaceDecl>(DC)->getIdentifier() &&
> +      cast<NamespaceDecl>(DC)->getIdentifier()->isStr("__cxxabiv1") &&
> +      DC->getParent()->isTranslationUnit())
> +    CGM.EmitFundamentalRTTIDescriptors();
> +}
> +
> +llvm::Value *ItaniumCXXABI::getVTableAddressPointInStructor(
> +    CodeGenFunction &CGF, const CXXRecordDecl *VTableClass, BaseSubobject
> Base,
> +    const CXXRecordDecl *NearestVBase, bool &NeedsVirtualOffset) {
> +  bool NeedsVTTParam = CGM.getCXXABI().NeedsVTTParameter(CGF.CurGD);
> +  NeedsVirtualOffset = (NeedsVTTParam && NearestVBase);
> +
> +  llvm::Value *VTableAddressPoint;
> +  if (NeedsVTTParam && (Base.getBase()->getNumVBases() || NearestVBase)) {
> +    // Get the secondary vpointer index.
> +    uint64_t VirtualPointerIndex =
> +        CGM.getVTables().getSecondaryVirtualPointerIndex(VTableClass,
> Base);
> +
> +    /// Load the VTT.
> +    llvm::Value *VTT = CGF.LoadCXXVTT();
> +    if (VirtualPointerIndex)
> +      VTT = CGF.Builder.CreateConstInBoundsGEP1_64(VTT,
> VirtualPointerIndex);
> +
> +    // And load the address point from the VTT.
> +    VTableAddressPoint = CGF.Builder.CreateLoad(VTT);
> +  } else {
> +    llvm::Constant *VTable =
> +        CGM.getCXXABI().getAddrOfVTable(VTableClass, CharUnits());
> +    uint64_t AddressPoint =
> CGM.getVTableContext().getVTableLayout(VTableClass)
> +        .getAddressPoint(Base);
> +    VTableAddressPoint =
> +        CGF.Builder.CreateConstInBoundsGEP2_64(VTable, 0, AddressPoint);
> +  }
> +
> +  return VTableAddressPoint;
> +}
> +
> +llvm::Constant *ItaniumCXXABI::getVTableAddressPointForConstExpr(
> +    BaseSubobject Base, const CXXRecordDecl *VTableClass) {
> +  llvm::Constant *VTable = getAddrOfVTable(VTableClass, CharUnits());
> +
> +  // Find the appropriate vtable within the vtable group.
> +  uint64_t AddressPoint =
> +
> CGM.getVTableContext().getVTableLayout(VTableClass).getAddressPoint(Base);
> +  llvm::Value *Indices[] = {
> +    llvm::ConstantInt::get(CGM.Int64Ty, 0),
> +    llvm::ConstantInt::get(CGM.Int64Ty, AddressPoint)
> +  };
> +
> +  return llvm::ConstantExpr::getInBoundsGetElementPtr(VTable, Indices);
> +}
> +
> +llvm::GlobalVariable *ItaniumCXXABI::getAddrOfVTable(const CXXRecordDecl
> *RD,
> +                                                     CharUnits VPtrOffset)
> {
> +  assert(VPtrOffset.isZero() && "Itanium ABI only supports zero vptr
> offsets");
> +
> +  llvm::GlobalVariable *&VTable = VTables[RD];
> +  if (VTable)
> +    return VTable;
> +
> +  // Queue up this v-table for possible deferred emission.
> +  CGM.addDeferredVTable(RD);
> +
> +  SmallString<256> OutName;
> +  llvm::raw_svector_ostream Out(OutName);
> +  CGM.getCXXABI().getMangleContext().mangleCXXVTable(RD, Out);
> +  Out.flush();
> +  StringRef Name = OutName.str();
> +
> +  VTableContext &VTContext = CGM.getVTableContext();
> +  llvm::ArrayType *ArrayType = llvm::ArrayType::get(
> +      CGM.Int8PtrTy,
> VTContext.getVTableLayout(RD).getNumVTableComponents());
> +
> +  VTable = CGM.CreateOrReplaceCXXRuntimeVariable(
> +      Name, ArrayType, llvm::GlobalValue::ExternalLinkage);
> +  VTable->setUnnamedAddr(true);
> +  return VTable;
> +}
> +
> llvm::Value *ItaniumCXXABI::getVirtualFunctionPointer(CodeGenFunction &CGF,
>                                                       GlobalDecl GD,
>                                                       llvm::Value *This,
> @@ -919,11 +1042,10 @@ void ItaniumCXXABI::EmitVirtualDestructo
>                         /*ImplicitParam=*/0, QualType(), 0, 0);
> }
>
> -void ItaniumCXXABI::EmitVirtualInheritanceTables(
> -    llvm::GlobalVariable::LinkageTypes Linkage, const CXXRecordDecl *RD) {
> +void ItaniumCXXABI::emitVirtualInheritanceTables(const CXXRecordDecl *RD) {
>   CodeGenVTables &VTables = CGM.getVTables();
>   llvm::GlobalVariable *VTT = VTables.GetAddrOfVTT(RD);
> -  VTables.EmitVTTDefinition(VTT, Linkage, RD);
> +  VTables.EmitVTTDefinition(VTT, CGM.getVTableLinkage(RD), RD);
> }
>
> void ARMCXXABI::EmitReturnFromThunk(CodeGenFunction &CGF,
>
> Modified: cfe/trunk/lib/CodeGen/MicrosoftCXXABI.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/MicrosoftCXXABI.cpp?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/lib/CodeGen/MicrosoftCXXABI.cpp (original)
> +++ cfe/trunk/lib/CodeGen/MicrosoftCXXABI.cpp Fri Sep 27 09:48:01 2013
> @@ -21,6 +21,7 @@
> #include "clang/AST/Decl.h"
> #include "clang/AST/DeclCXX.h"
> #include "clang/AST/VTableBuilder.h"
> +#include "llvm/ADT/StringSet.h"
>
> using namespace clang;
> using namespace CodeGen;
> @@ -150,6 +151,20 @@ public:
>                            CallExpr::const_arg_iterator ArgBeg,
>                            CallExpr::const_arg_iterator ArgEnd);
>
> +  void emitVTableDefinitions(CodeGenVTables &CGVT, const CXXRecordDecl
> *RD);
> +
> +  llvm::Value *getVTableAddressPointInStructor(
> +      CodeGenFunction &CGF, const CXXRecordDecl *VTableClass,
> +      BaseSubobject Base, const CXXRecordDecl *NearestVBase,
> +      bool &NeedsVirtualOffset);
> +
> +  llvm::Constant *
> +  getVTableAddressPointForConstExpr(BaseSubobject Base,
> +                                    const CXXRecordDecl *VTableClass);
> +
> +  llvm::GlobalVariable *getAddrOfVTable(const CXXRecordDecl *RD,
> +                                        CharUnits VPtrOffset);
> +
>   llvm::Value *getVirtualFunctionPointer(CodeGenFunction &CGF, GlobalDecl
> GD,
>                                          llvm::Value *This, llvm::Type *Ty);
>
> @@ -158,8 +173,7 @@ public:
>                                  CXXDtorType DtorType, SourceLocation
> CallLoc,
>                                  llvm::Value *This);
>
> -  void EmitVirtualInheritanceTables(llvm::GlobalVariable::LinkageTypes
> Linkage,
> -                                    const CXXRecordDecl *RD);
> +  void emitVirtualInheritanceTables(const CXXRecordDecl *RD);
>
>   void EmitGuardedInit(CodeGenFunction &CGF, const VarDecl &D,
>                        llvm::GlobalVariable *DeclPtr,
> @@ -303,7 +317,16 @@ public:
>                                   const MemberPointerType *MPT);
>
> private:
> -  /// VBTables - All the vbtables which have been referenced.
> +  typedef std::pair<const CXXRecordDecl *, CharUnits> VFTableIdTy;
> +  typedef llvm::DenseMap<VFTableIdTy, llvm::GlobalVariable *>
> VFTablesMapTy;
> +  /// \brief All the vftables that have been referenced.
> +  VFTablesMapTy VFTablesMap;
> +
> +  /// \brief This set holds the record decls we've deferred vtable emission
> for.
> +  llvm::SmallPtrSet<const CXXRecordDecl *, 4> DeferredVFTables;
> +
> +
> +  /// \brief All the vbtables which have been referenced.
>   llvm::DenseMap<const CXXRecordDecl *, VBTableVector> VBTablesMap;
>
>   /// Info on the global variable used to guard initialization of static
> locals.
> @@ -616,6 +639,116 @@ void MicrosoftCXXABI::EmitConstructorCal
>                         ImplicitParam, ImplicitParamTy, ArgBeg, ArgEnd);
> }
>
> +void MicrosoftCXXABI::emitVTableDefinitions(CodeGenVTables &CGVT,
> +                                            const CXXRecordDecl *RD) {
> +  MicrosoftVFTableContext &VFTContext = CGM.getVFTableContext();
> +  MicrosoftVFTableContext::VFPtrListTy VFPtrs =
> VFTContext.getVFPtrOffsets(RD);
> +  llvm::GlobalVariable::LinkageTypes Linkage = CGM.getVTableLinkage(RD);
> +
> +  for (MicrosoftVFTableContext::VFPtrListTy::iterator I = VFPtrs.begin(),
> +       E = VFPtrs.end(); I != E; ++I) {
> +    llvm::GlobalVariable *VTable = getAddrOfVTable(RD, I->VFPtrFullOffset);
> +    if (VTable->hasInitializer())
> +      continue;
> +
> +    const VTableLayout &VTLayout =
> +        VFTContext.getVFTableLayout(RD, I->VFPtrFullOffset);
> +    llvm::Constant *Init = CGVT.CreateVTableInitializer(
> +        RD, VTLayout.vtable_component_begin(),
> +        VTLayout.getNumVTableComponents(), VTLayout.vtable_thunk_begin(),
> +        VTLayout.getNumVTableThunks());
> +    VTable->setInitializer(Init);
> +
> +    VTable->setLinkage(Linkage);
> +    CGM.setTypeVisibility(VTable, RD, CodeGenModule::TVK_ForVTable);
> +  }
> +}
> +
> +llvm::Value *MicrosoftCXXABI::getVTableAddressPointInStructor(
> +    CodeGenFunction &CGF, const CXXRecordDecl *VTableClass, BaseSubobject
> Base,
> +    const CXXRecordDecl *NearestVBase, bool &NeedsVirtualOffset) {
> +  NeedsVirtualOffset = (NearestVBase != 0);
> +
> +  llvm::Value *VTableAddressPoint =
> +      getAddrOfVTable(VTableClass, Base.getBaseOffset());
> +  if (!VTableAddressPoint) {
> +    assert(Base.getBase()->getNumVBases() &&
> +
> !CGM.getContext().getASTRecordLayout(Base.getBase()).hasOwnVFPtr());
> +  }
> +  return VTableAddressPoint;
> +}
> +
> +static void mangleVFTableName(CodeGenModule &CGM, const CXXRecordDecl *RD,
> +                              const VFPtrInfo &VFPtr, SmallString<256>
> &Name) {
> +  llvm::raw_svector_ostream Out(Name);
> +  CGM.getCXXABI().getMangleContext().mangleCXXVFTable(
> +      RD, VFPtr.PathToMangle, Out);
> +}
> +
> +llvm::Constant *MicrosoftCXXABI::getVTableAddressPointForConstExpr(
> +    BaseSubobject Base, const CXXRecordDecl *VTableClass) {
> +  llvm::Constant *VTable = getAddrOfVTable(VTableClass,
> Base.getBaseOffset());
> +  assert(VTable && "Couldn't find a vftable for the given base?");
> +  return VTable;
> +}
> +
> +llvm::GlobalVariable *MicrosoftCXXABI::getAddrOfVTable(const CXXRecordDecl
> *RD,
> +                                                       CharUnits
> VPtrOffset) {
> +  // getAddrOfVTable may return 0 if asked to get an address of a vtable
> which
> +  // shouldn't be used in the given record type. We want to cache this
> result in
> +  // VFTablesMap, thus a simple zero check is not sufficient.
> +  VFTableIdTy ID(RD, VPtrOffset);
> +  VFTablesMapTy::iterator I;
> +  bool Inserted;
> +  llvm::tie(I, Inserted) = VFTablesMap.insert(
> +      std::make_pair(ID, static_cast<llvm::GlobalVariable *>(0)));
> +  if (!Inserted)
> +    return I->second;
> +
> +  llvm::GlobalVariable *&VTable = I->second;
> +
> +  MicrosoftVFTableContext &VFTContext = CGM.getVFTableContext();
> +  const MicrosoftVFTableContext::VFPtrListTy &VFPtrs =
> +      VFTContext.getVFPtrOffsets(RD);
> +
> +  if (DeferredVFTables.insert(RD)) {
> +    // We haven't processed this record type before.
> +    // Queue up this v-table for possible deferred emission.
> +    CGM.addDeferredVTable(RD);
> +
> +#ifndef NDEBUG
> +    // Create all the vftables at once in order to make sure each vftable
> has
> +    // a unique mangled name.
> +    llvm::StringSet<> ObservedMangledNames;
> +    for (size_t J = 0, F = VFPtrs.size(); J != F; ++J) {
> +      SmallString<256> Name;
> +      mangleVFTableName(CGM, RD, VFPtrs[J], Name);
> +      if (!ObservedMangledNames.insert(Name.str()))
> +        llvm_unreachable("Already saw this mangling before?");
> +    }
> +#endif
> +  }
> +
> +  for (size_t J = 0, F = VFPtrs.size(); J != F; ++J) {
> +    if (VFPtrs[J].VFPtrFullOffset != VPtrOffset)
> +      continue;
> +
> +    llvm::ArrayType *ArrayType = llvm::ArrayType::get(
> +        CGM.Int8PtrTy,
> +        VFTContext.getVFTableLayout(RD, VFPtrs[J].VFPtrFullOffset)
> +            .getNumVTableComponents());
> +
> +    SmallString<256> Name;
> +    mangleVFTableName(CGM, RD, VFPtrs[J], Name);
> +    VTable = CGM.CreateOrReplaceCXXRuntimeVariable(
> +        Name.str(), ArrayType, llvm::GlobalValue::ExternalLinkage);
> +    VTable->setUnnamedAddr(true);
> +    break;
> +  }
> +
> +  return VTable;
> +}
> +
> llvm::Value *MicrosoftCXXABI::getVirtualFunctionPointer(CodeGenFunction
> &CGF,
>                                                         GlobalDecl GD,
>                                                         llvm::Value *This,
> @@ -674,9 +807,10 @@ MicrosoftCXXABI::EnumerateVBTables(const
>   return VBTables;
> }
>
> -void MicrosoftCXXABI::EmitVirtualInheritanceTables(
> -    llvm::GlobalVariable::LinkageTypes Linkage, const CXXRecordDecl *RD) {
> +void MicrosoftCXXABI::emitVirtualInheritanceTables(const CXXRecordDecl *RD)
> {
>   const VBTableVector &VBTables = EnumerateVBTables(RD);
> +  llvm::GlobalVariable::LinkageTypes Linkage = CGM.getVTableLinkage(RD);
> +
>   for (VBTableVector::const_iterator I = VBTables.begin(), E =
> VBTables.end();
>        I != E; ++I) {
>     I->EmitVBTableDefinition(CGM, RD, Linkage);
>
> Added: cfe/trunk/test/CodeGenCXX/microsoft-abi-constexpr-vs-inheritance.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/microsoft-abi-constexpr-vs-inheritance.cpp?rev=191523&view=auto
> ==============================================================================
> --- cfe/trunk/test/CodeGenCXX/microsoft-abi-constexpr-vs-inheritance.cpp
> (added)
> +++ cfe/trunk/test/CodeGenCXX/microsoft-abi-constexpr-vs-inheritance.cpp Fri
> Sep 27 09:48:01 2013
> @@ -0,0 +1,23 @@
> +// RUN: %clang_cc1 -std=c++11 -fno-rtti -emit-llvm %s -o - -cxx-abi
> microsoft -triple=i386-pc-win32 | FileCheck %s
> +
> +struct A {
> +  constexpr A(int x) : x(x) {}
> +  virtual void f();
> +  int x;
> +};
> +
> +A a(42);
> +// CHECK: @"\01?a@@3UA@@A" = global { [1 x i8*]*, i32 } { [1 x i8*]*
> @"\01??_7A@@6B@", i32 42 }, align 4
> +
> +struct B {
> +  constexpr B(int y) : y(y) {}
> +  virtual void g();
> +  int y;
> +};
> +
> +struct C : A, B {
> +  constexpr C() : A(777), B(13) {}
> +};
> +
> +C c;
> +// CHECK: @"\01?c@@3UC@@A" = global { [1 x i8*]*, i32, [1 x i8*]*, i32 } {
> [1 x i8*]* @"\01??_7C@@6BA@@@", i32 777, [1 x i8*]* @"\01??_7C@@6BB@@@", i32
> 13 }
>
> Modified:
> cfe/trunk/test/CodeGenCXX/microsoft-abi-multiple-nonvirtual-inheritance.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/microsoft-abi-multiple-nonvirtual-inheritance.cpp?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> ---
> cfe/trunk/test/CodeGenCXX/microsoft-abi-multiple-nonvirtual-inheritance.cpp
> (original)
> +++
> cfe/trunk/test/CodeGenCXX/microsoft-abi-multiple-nonvirtual-inheritance.cpp
> Fri Sep 27 09:48:01 2013
> @@ -145,3 +145,39 @@ void call_grandchild_right(GrandchildOve
>   // Just make sure we don't crash.
>   obj->right();
> }
> +
> +void emit_ctors() {
> +  Left l;
> +  // CHECK: define {{.*}} @"\01??0Left@@QAE at XZ"
> +  // CHECK-NOT: getelementptr
> +  // CHECK:   store [1 x i8*]* @"\01??_7Left@@6B@"
> +  // CHECK: ret
> +
> +  Right r;
> +  // CHECK: define {{.*}} @"\01??0Right@@QAE at XZ"
> +  // CHECK-NOT: getelementptr
> +  // CHECK:   store [1 x i8*]* @"\01??_7Right@@6B@"
> +  // CHECK: ret
> +
> +  ChildOverride co;
> +  // CHECK: define {{.*}} @"\01??0ChildOverride@@QAE at XZ"
> +  // CHECK:   %[[THIS:.*]] = load %struct.ChildOverride**
> +  // CHECK:   %[[VFPTR:.*]] = bitcast %struct.ChildOverride* %this1 to [1 x
> i8*]**
> +  // CHECK:   store [1 x i8*]* @"\01??_7ChildOverride@@6BLeft@@@", [1 x
> i8*]** %[[VFPTR]]
> +  // CHECK:   %[[THIS_i8:.*]] = bitcast %struct.ChildOverride* %[[THIS]] to
> i8*
> +  // CHECK:   %[[VFPTR_i8:.*]] = getelementptr inbounds i8* %[[THIS_i8]],
> i32 4
> +  // CHECK:   %[[VFPTR:.*]] = bitcast i8* %[[VFPTR_i8]] to [1 x i8*]**
> +  // CHECK:   store [1 x i8*]* @"\01??_7ChildOverride@@6BRight@@@", [1 x
> i8*]** %[[VFPTR]]
> +  // CHECK: ret
> +
> +  GrandchildOverride gc;
> +  // CHECK: define {{.*}} @"\01??0GrandchildOverride@@QAE at XZ"
> +  // CHECK:   %[[THIS:.*]] = load %struct.GrandchildOverride**
> +  // CHECK:   %[[VFPTR:.*]] = bitcast %struct.GrandchildOverride* %this1 to
> [1 x i8*]**
> +  // CHECK:   store [1 x i8*]* @"\01??_7GrandchildOverride@@6BLeft@@@", [1
> x i8*]** %[[VFPTR]]
> +  // CHECK:   %[[THIS_i8:.*]] = bitcast %struct.GrandchildOverride*
> %[[THIS]] to i8*
> +  // CHECK:   %[[VFPTR_i8:.*]] = getelementptr inbounds i8* %[[THIS_i8]],
> i32 4
> +  // CHECK:   %[[VFPTR:.*]] = bitcast i8* %[[VFPTR_i8]] to [1 x i8*]**
> +  // CHECK:   store [1 x i8*]* @"\01??_7GrandchildOverride@@6BRight@@@", [1
> x i8*]** %[[VFPTR]]
> +  // CHECK: ret
> +}
>
> Modified: cfe/trunk/test/CodeGenCXX/microsoft-abi-structors.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/microsoft-abi-structors.cpp?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/test/CodeGenCXX/microsoft-abi-structors.cpp (original)
> +++ cfe/trunk/test/CodeGenCXX/microsoft-abi-structors.cpp Fri Sep 27
> 09:48:01 2013
> @@ -71,8 +71,8 @@ void C::foo() {}
> void check_vftable_offset() {
>   C c;
> // The vftable pointer should point at the beginning of the vftable.
> -// CHECK: [[THIS_PTR:%[0-9]+]] = bitcast %"struct.basic::C"* {{.*}} to
> i8***
> -// CHECK: store i8** getelementptr inbounds ([2 x i8*]*
> @"\01??_7C at basic@@6B@", i64 0, i64 0), i8*** [[THIS_PTR]]
> +// CHECK: [[THIS_PTR:%[0-9]+]] = bitcast %"struct.basic::C"* {{.*}} to [2 x
> i8*]**
> +// CHECK: store [2 x i8*]* @"\01??_7C at basic@@6B@", [2 x i8*]** [[THIS_PTR]]
> }
>
> void call_complete_dtor(C *obj_ptr) {
> @@ -161,7 +161,8 @@ C::C() {
>   // CHECK-NEXT: br label %[[SKIP_VBASES]]
>   //
>   // CHECK: [[SKIP_VBASES]]
> -  // CHECK: @"\01??_7C at constructors@@6B@"
> +  // Class C does not define or override methods, so shouldn't change the
> vfptr.
> +  // CHECK-NOT: @"\01??_7C at constructors@@6B@"
>   // CHECK: ret
> }
>
>
> Modified: cfe/trunk/test/CodeGenCXX/microsoft-abi-virtual-inheritance.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/microsoft-abi-virtual-inheritance.cpp?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/test/CodeGenCXX/microsoft-abi-virtual-inheritance.cpp
> (original)
> +++ cfe/trunk/test/CodeGenCXX/microsoft-abi-virtual-inheritance.cpp Fri Sep
> 27 09:48:01 2013
> @@ -7,10 +7,26 @@ struct VBase {
> };
>
> struct B : virtual VBase {
> +  B();
>   virtual void foo();
>   virtual void bar();
> };
>
> +B::B() {
> +  // CHECK: @"\01??0B@@QAE at XZ"
> +  // CHECK:   %[[THIS:.*]] = load %struct.B**
> +  // CHECK:   br i1 %{{.*}}, label %[[INIT_VBASES:.*]], label
> %[[SKIP_VBASES:.*]]
> +  // CHECK: %[[SKIP_VBASES]]
> +  // CHECK:   %[[THIS_i8:.*]] = bitcast %struct.B* %[[THIS]] to i8*
> +  // CHECK:   %[[VBPTR:.*]] = getelementptr inbounds i8* %[[THIS_i8]], i32
> 0
> +  // CHECK:   %[[THIS_i8:.*]] = bitcast %struct.B* %[[THIS]] to i8*
> +  // CHECK:   %[[VFPTR_i8:.*]] = getelementptr inbounds i8* %[[THIS_i8]],
> i32 %{{.*}}
> +  // CHECK:   %[[VFPTR:.*]] = bitcast i8* %[[VFPTR_i8]] to [2 x i8*]**
> +  // CHECK:   store [2 x i8*]* @"\01??_7B@@6B@", [2 x i8*]** %[[VFPTR]]
> +  // FIXME: Should initialize the vtorDisp here.
> +  // CHECK: ret
> +}
> +
> void B::foo() {
> // CHECK: define x86_thiscallcc void @"\01?foo at B@@UAEXXZ"(i8*
> //
>
> Modified:
> cfe/trunk/test/CodeGenCXX/microsoft-abi-vtables-multiple-nonvirtual-inheritance.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/microsoft-abi-vtables-multiple-nonvirtual-inheritance.cpp?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> ---
> cfe/trunk/test/CodeGenCXX/microsoft-abi-vtables-multiple-nonvirtual-inheritance.cpp
> (original)
> +++
> cfe/trunk/test/CodeGenCXX/microsoft-abi-vtables-multiple-nonvirtual-inheritance.cpp
> Fri Sep 27 09:48:01 2013
> @@ -19,6 +19,8 @@
> // RUN: FileCheck --check-prefix=RET-THUNKS-Test4 %s < %t
> // RUN: FileCheck --check-prefix=RET-THUNKS-Test5 %s < %t
>
> +// RUN: FileCheck --check-prefix=MANGLING %s < %t
> +
> struct Empty {
>   // Doesn't have a vftable!
> };
> @@ -51,6 +53,9 @@ struct Test1: A, B {
>   // NO-THUNKS-Test1: VFTable indices for 'no_thunks::Test1' (1 entries)
>   // NO-THUNKS-Test1-NEXT: 0 | void no_thunks::Test1::f()
>
> +  // MANGLING-DAG: @"\01??_7Test1 at no_thunks@@6BA@@@"
> +  // MANGLING-DAG: @"\01??_7Test1 at no_thunks@@6BB@@@"
> +
>   // Overrides only the left child's method (A::f), needs no thunks.
>   virtual void f();
> };
> @@ -102,6 +107,8 @@ struct Test4 : Empty, A {
>   // NO-THUNKS-Test4: VFTable indices for 'no_thunks::Test4' (1 entries).
>   // NO-THUNKS-Test4-NEXT: 0 | void no_thunks::Test4::f()
>
> +  // MANGLING-DAG: @"\01??_7Test4 at no_thunks@@6B@"
> +
>   virtual void f();
> };
>
> @@ -127,6 +134,11 @@ struct Test5: Test1, Test2 {
>   // NO-THUNKS-Test5: VFTable indices for 'no_thunks::Test5' (1 entries).
>   // NO-THUNKS-Test5-NEXT: 1 | void no_thunks::Test5::z()
>
> +  // MANGLING-DAG: @"\01??_7Test5 at no_thunks@@6BA@@Test1 at 1@@"
> +  // MANGLING-DAG: @"\01??_7Test5 at no_thunks@@6BA@@Test2 at 1@@"
> +  // MANGLING-DAG: @"\01??_7Test5 at no_thunks@@6BB@@Test1 at 1@@"
> +  // MANGLING-DAG: @"\01??_7Test5 at no_thunks@@6BB@@Test2 at 1@@"
> +
>   virtual void z();
> };
>
> @@ -143,6 +155,9 @@ struct Test6: Test1 {
>   // NO-THUNKS-Test6: VFTable indices for 'no_thunks::Test6' (1 entries).
>   // NO-THUNKS-Test6-NEXT: 0 | void no_thunks::Test6::f()
>
> +  // MANGLING-DAG: @"\01??_7Test6 at no_thunks@@6BA@@@"
> +  // MANGLING-DAG: @"\01??_7Test6 at no_thunks@@6BB@@@"
> +
>   // Overrides both no_thunks::Test1::f and A::f.
>   virtual void f();
> };
> @@ -203,6 +218,9 @@ struct Test9: A, D {
>   // NO-THUNKS-Test9: VFTable indices for 'no_thunks::Test9' (1 entries).
>   // NO-THUNKS-Test9-NEXT: 1 | void no_thunks::Test9::h()
>
> +  // MANGLING-DAG: @"\01??_7Test9 at no_thunks@@6BA@@@"
> +  // MANGLING-DAG: @"\01??_7Test9 at no_thunks@@6BD at 1@@"
> +
>   virtual void h();
> };
>
> @@ -228,6 +246,9 @@ struct Test1: A, D {
>   // PURE-VIRTUAL-Test1-NEXT: via vfptr at offset 4
>   // PURE-VIRTUAL-Test1-NEXT: 0 | void pure_virtual::Test1::g()
>
> +  // MANGLING-DAG: @"\01??_7Test1 at pure_virtual@@6BA@@@"
> +  // MANGLING-DAG: @"\01??_7Test1 at pure_virtual@@6BD at 1@@"
> +
>   // Overrides only the right child's method (pure_virtual::D::g), needs
> this adjustment but
>   // not thunks.
>   virtual void g();
> @@ -254,6 +275,9 @@ struct Test1 : B, C {
>   // THIS-THUNKS-Test1: VFTable indices for 'this_adjustment::Test1' (1
> entries).
>   // THIS-THUNKS-Test1-NEXT: 0 | void this_adjustment::Test1::g()
>
> +  // MANGLING-DAG: @"\01??_7Test1 at this_adjustment@@6BB@@@"
> +  // MANGLING-DAG: @"\01??_7Test1 at this_adjustment@@6BC@@@"
> +
>   virtual void g();
> };
>
> @@ -278,6 +302,10 @@ struct Test2 : A, B, C {
>   // THIS-THUNKS-Test2-NEXT: via vfptr at offset 4
>   // THIS-THUNKS-Test2-NEXT: 0 | void this_adjustment::Test2::g()
>
> +  // MANGLING-DAG: @"\01??_7Test2 at this_adjustment@@6BA@@@"
> +  // MANGLING-DAG: @"\01??_7Test2 at this_adjustment@@6BB@@@"
> +  // MANGLING-DAG: @"\01??_7Test2 at this_adjustment@@6BC@@@"
> +
>   virtual void g();
> };
>
> @@ -337,6 +365,8 @@ struct Test1 : Ret1 {
>   // RET-THUNKS-Test1: VFTable indices for 'return_adjustment::Test1' (1
> entries).
>   // RET-THUNKS-Test1-NEXT: 2 | this_adjustment::Test1
> *return_adjustment::Test1::foo()
>
> +  // MANGLING-DAG: @"\01??_7Test1 at return_adjustment@@6B@"
> +
>   virtual this_adjustment::Test1* foo();
> };
>
>
> Modified:
> cfe/trunk/test/CodeGenCXX/microsoft-abi-vtables-single-inheritance.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/microsoft-abi-vtables-single-inheritance.cpp?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/test/CodeGenCXX/microsoft-abi-vtables-single-inheritance.cpp
> (original)
> +++ cfe/trunk/test/CodeGenCXX/microsoft-abi-vtables-single-inheritance.cpp
> Fri Sep 27 09:48:01 2013
> @@ -1,6 +1,6 @@
> // RUN: %clang_cc1 %s -fno-rtti -cxx-abi microsoft -triple=i386-pc-win32
> -emit-llvm -fdump-vtable-layouts -o - > %t 2>&1
> -// RUN: FileCheck --check-prefix=EMITS-VTABLE %s < %t
> -// RUN: FileCheck --check-prefix=NO-VTABLE %s < %t
> +// RUN: FileCheck --check-prefix=EMITS-VFTABLE %s < %t
> +// RUN: FileCheck --check-prefix=NO-VFTABLE %s < %t
> // RUN: FileCheck --check-prefix=CHECK-A %s < %t
> // RUN: FileCheck --check-prefix=CHECK-B %s < %t
> // RUN: FileCheck --check-prefix=CHECK-C %s < %t
> @@ -10,19 +10,12 @@
> // RUN: FileCheck --check-prefix=CHECK-G %s < %t
> // RUN: FileCheck --check-prefix=CHECK-I %s < %t
>
> -// FIXME: Currently, we only test VFTableContext in the AST, but still use
> -// VTableContext for CodeGen. We should remove the "Vtable" checks below
> when we
> -// completely switch from VTableContext to VFTableContext.
> -// Currently, the order of Vtable vs VFTable output depends on whether the
> -// v*table info was required by a constructor or a method definition.
> -
> struct A {
>   // CHECK-A: VFTable for 'A' (3 entries)
>   // CHECK-A-NEXT: 0 | void A::f()
>   // CHECK-A-NEXT: 1 | void A::g()
>   // CHECK-A-NEXT: 2 | void A::h()
> -
> -  // CHECK-A: Vtable for 'A' (3 entries)
> +  // CHECK-A: VFTable indices for 'A' (3 entries)
>   // CHECK-A-NEXT: 0 | void A::f()
>   // CHECK-A-NEXT: 1 | void A::g()
>   // CHECK-A-NEXT: 2 | void A::h()
> @@ -33,20 +26,17 @@ struct A {
>   int ia;
> };
> A a;
> -// EMITS-VTABLE-DAG: @"\01??_7A@@6B@" = linkonce_odr unnamed_addr constant
> [3 x i8*]
> +// EMITS-VFTABLE-DAG: @"\01??_7A@@6B@" = linkonce_odr unnamed_addr constant
> [3 x i8*]
>
> struct B : A {
> -  // CHECK-B: Vtable for 'B' (5 entries)
> +  // CHECK-B: VFTable for 'A' in 'B' (5 entries)
>   // CHECK-B-NEXT: 0 | void B::f()
>   // CHECK-B-NEXT: 1 | void A::g()
>   // CHECK-B-NEXT: 2 | void A::h()
>   // CHECK-B-NEXT: 3 | void B::i()
>   // CHECK-B-NEXT: 4 | void B::j()
> -
> -  // CHECK-B: VFTable for 'A' in 'B' (5 entries)
> +  // CHECK-B: VFTable indices for 'B' (3 entries)
>   // CHECK-B-NEXT: 0 | void B::f()
> -  // CHECK-B-NEXT: 1 | void A::g()
> -  // CHECK-B-NEXT: 2 | void A::h()
>   // CHECK-B-NEXT: 3 | void B::i()
>   // CHECK-B-NEXT: 4 | void B::j()
>
> @@ -55,7 +45,7 @@ struct B : A {
>   virtual void j();
> };
> B b;
> -// EMITS-VTABLE-DAG: @"\01??_7B@@6B@" = linkonce_odr unnamed_addr constant
> [5 x i8*]
> +// EMITS-VFTABLE-DAG: @"\01??_7B@@6B@" = linkonce_odr unnamed_addr constant
> [5 x i8*]
>
> struct C {
>   // CHECK-C: VFTable for 'C' (2 entries)
> @@ -65,25 +55,17 @@ struct C {
>   // CHECK-C-NEXT: 0 | C::~C() [scalar deleting]
>   // CHECK-C-NEXT: 1 | void C::f()
>
> -  // CHECK-C: Vtable for 'C' (2 entries)
> -  // CHECK-C-NEXT: 0 | C::~C() [scalar deleting]
> -  // CHECK-C-NEXT: 1 | void C::f()
> -  // CHECK-C: VTable indices for 'C' (2 entries).
> -  // CHECK-C-NEXT: 0 | C::~C() [scalar deleting]
> -  // CHECK-C-NEXT: 1 | void C::f()
> -
>   virtual ~C();
>   virtual void f();
> };
> void C::f() {}
> -// NO-VTABLE-NOT: @"\01??_7C@@6B@"
> +// NO-VFTABLE-NOT: @"\01??_7C@@6B@"
>
> struct D {
> -  // CHECK-D: Vtable for 'D' (2 entries)
> +  // CHECK-D: VFTable for 'D' (2 entries)
>   // CHECK-D-NEXT: 0 | void D::f()
>   // CHECK-D-NEXT: 1 | D::~D() [scalar deleting]
> -
> -  // CHECK-D: VFTable for 'D' (2 entries)
> +  // CHECK-D: VFTable indices for 'D' (2 entries)
>   // CHECK-D-NEXT: 0 | void D::f()
>   // CHECK-D-NEXT: 1 | D::~D() [scalar deleting]
>
> @@ -91,7 +73,7 @@ struct D {
>   virtual ~D();
> };
> D d;
> -// EMITS-VTABLE-DAG: @"\01??_7D@@6B@" = linkonce_odr unnamed_addr constant
> [2 x i8*]
> +// EMITS-VFTABLE-DAG: @"\01??_7D@@6B@" = linkonce_odr unnamed_addr constant
> [2 x i8*]
>
> struct E : A {
>   // CHECK-E: VFTable for 'A' in 'E' (5 entries)
> @@ -104,35 +86,15 @@ struct E : A {
>   // CHECK-E-NEXT: 3 | E::~E() [scalar deleting]
>   // CHECK-E-NEXT: 4 | void E::i()
>
> -  // CHECK-E: Vtable for 'E' (5 entries)
> -  // CHECK-E-NEXT: 0 | void A::f()
> -  // CHECK-E-NEXT: 1 | void A::g()
> -  // CHECK-E-NEXT: 2 | void A::h()
> -  // CHECK-E-NEXT: 3 | E::~E() [scalar deleting]
> -  // CHECK-E-NEXT: 4 | void E::i()
> -  // CHECK-E: VTable indices for 'E' (2 entries).
> -  // CHECK-E-NEXT: 3 | E::~E() [scalar deleting]
> -  // CHECK-E-NEXT: 4 | void E::i()
> -
>   // ~E would be the key method, but it isn't used, and MS ABI has no key
>   // methods.
>   virtual ~E();
>   virtual void i();
> };
> void E::i() {}
> -// NO-VTABLE-NOT: @"\01??_7E@@6B@"
> +// NO-VFTABLE-NOT: @"\01??_7E@@6B@"
>
> struct F : A {
> -  // CHECK-F: Vtable for 'F' (5 entries)
> -  // CHECK-F-NEXT: 0 | void A::f()
> -  // CHECK-F-NEXT: 1 | void A::g()
> -  // CHECK-F-NEXT: 2 | void A::h()
> -  // CHECK-F-NEXT: 3 | void F::i()
> -  // CHECK-F-NEXT: 4 | F::~F() [scalar deleting]
> -  // CHECK-F: VTable indices for 'F' (2 entries).
> -  // CHECK-F-NEXT: 3 | void F::i()
> -  // CHECK-F-NEXT: 4 | F::~F() [scalar deleting]
> -
>   // CHECK-F: VFTable for 'A' in 'F' (5 entries)
>   // CHECK-F-NEXT: 0 | void A::f()
>   // CHECK-F-NEXT: 1 | void A::g()
> @@ -147,7 +109,7 @@ struct F : A {
>   virtual ~F();
> };
> F f;
> -// EMITS-VTABLE-DAG: @"\01??_7F@@6B@" = linkonce_odr unnamed_addr constant
> [5 x i8*]
> +// EMITS-VFTABLE-DAG: @"\01??_7F@@6B@" = linkonce_odr unnamed_addr constant
> [5 x i8*]
>
> struct G : E {
>   // CHECK-G: VFTable for 'A' in 'E' in 'G' (6 entries)
> @@ -162,31 +124,19 @@ struct G : E {
>   // CHECK-G-NEXT: 3 | G::~G() [scalar deleting]
>   // CHECK-G-NEXT: 5 | void G::j()
>
> -  // CHECK-G: Vtable for 'G' (6 entries)
> -  // CHECK-G-NEXT: 0 | void G::f()
> -  // CHECK-G-NEXT: 1 | void A::g()
> -  // CHECK-G-NEXT: 2 | void A::h()
> -  // CHECK-G-NEXT: 3 | G::~G() [scalar deleting]
> -  // CHECK-G-NEXT: 4 | void E::i()
> -  // CHECK-G-NEXT: 5 | void G::j()
> -  // CHECK-G: VTable indices for 'G' (3 entries).
> -  // CHECK-G-NEXT: 0 | void G::f()
> -  // CHECK-G-NEXT: 3 | G::~G() [scalar deleting]
> -  // CHECK-G-NEXT: 5 | void G::j()
> -
>   virtual void f();  // overrides A::f()
>   virtual ~G();
>   virtual void j();
> };
> void G::j() {}
> -// NO-VTABLE-NOT: @"\01??_7G@@6B@"
> +// NO-VFTABLE-NOT: @"\01??_7G@@6B@"
>
> // Test that the usual Itanium-style key method does not emit a vtable.
> struct H {
>   virtual void f();
> };
> void H::f() {}
> -// NO-VTABLE-NOT: @"\01??_7H@@6B@"
> +// NO-VFTABLE-NOT: @"\01??_7H@@6B@"
>
> struct Empty { };
>
>
> Modified:
> cfe/trunk/test/CodeGenCXX/microsoft-abi-vtables-virtual-inheritance.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/microsoft-abi-vtables-virtual-inheritance.cpp?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/test/CodeGenCXX/microsoft-abi-vtables-virtual-inheritance.cpp
> (original)
> +++ cfe/trunk/test/CodeGenCXX/microsoft-abi-vtables-virtual-inheritance.cpp
> Fri Sep 27 09:48:01 2013
> @@ -18,6 +18,8 @@
> // RUN: FileCheck --check-prefix=RET-W %s < %t
> // RUN: FileCheck --check-prefix=RET-T %s < %t
>
> +// RUN: FileCheck --check-prefix=MANGLING %s < %t
> +
> struct Empty { };
>
> struct A {
> @@ -38,6 +40,8 @@ struct C: virtual A {
>   // VTABLE-C-NEXT: vbtable index 1, vfptr at offset 0
>   // VTABLE-C-NEXT: 0 | void C::f()
>
> +  // MANGLING-DAG: @"\01??_7C@@6B@"
> +
>   ~C();  // Currently required to have correct record layout, see PR16406
>   virtual void f();
> };
> @@ -58,6 +62,9 @@ struct D: virtual A {
>   // VTABLE-D-NEXT: via vbtable index 1, vfptr at offset 0
>   // VTABLE-D-NEXT: 0 | void D::f()
>
> +  // MANGLING-DAG: @"\01??_7D@@6B0@@"
> +  // MANGLING-DAG: @"\01??_7D@@6BA@@@"
> +
>   virtual void f();
>   virtual void h();
> };
> @@ -71,6 +78,7 @@ struct X { int x; };
>
> // X and A get reordered in the layout since X doesn't have a vfptr while A
> has.
> struct Y : X, A { };
> +// MANGLING-DAG: @"\01??_7Y at Test1@@6B@"
>
> struct Z : virtual Y {
>   // TEST1: VFTable for 'A' in 'Test1::Y' in 'Test1::Z' (2 entries).
> @@ -78,6 +86,8 @@ struct Z : virtual Y {
>   // TEST1-NEXT: 1 | void A::z()
>
>   // TEST1-NOT: VFTable indices for 'Test1::Z'
> +
> +  // MANGLING-DAG: @"\01??_7Z at Test1@@6B@"
> };
>
> Z z;
> @@ -99,6 +109,10 @@ struct X: virtual A, virtual B {
>   // TEST2: VFTable indices for 'Test2::X' (1 entries).
>   // TEST2-NEXT: 0 | void Test2::X::h()
>
> +  // MANGLING-DAG: @"\01??_7X at Test2@@6B01@@"
> +  // MANGLING-DAG: @"\01??_7X at Test2@@6BA@@@"
> +  // MANGLING-DAG: @"\01??_7X at Test2@@6BB@@@"
> +
>   virtual void h();
> };
>
> @@ -107,7 +121,9 @@ X x;
>
> namespace Test3 {
>
> -struct X : virtual A { };
> +struct X : virtual A {
> +  // MANGLING-DAG: @"\01??_7X at Test3@@6B@"
> +};
>
> struct Y: virtual X {
>   // TEST3: VFTable for 'A' in 'Test3::X' in 'Test3::Y' (2 entries).
> @@ -115,6 +131,8 @@ struct Y: virtual X {
>   // TEST3-NEXT: 1 | void A::z()
>
>   // TEST3-NOT: VFTable indices for 'Test3::Y'
> +
> +  // MANGLING-DAG: @"\01??_7Y at Test3@@6B@"
> };
>
> Y y;
> @@ -134,6 +152,8 @@ struct X: virtual C {
>   // TEST4-NEXT: 1 | void A::z()
>
>   // TEST4-NOT: VFTable indices for 'Test4::X'
> +
> +  // MANGLING-DAG: @"\01??_7X at Test4@@6B@"
> };
>
> X x;
> @@ -143,6 +163,7 @@ namespace Test5 {
>
> // New methods are added to the base's vftable.
> struct X : A {
> +  // MANGLING-DAG: @"\01??_7X at Test5@@6B@"
>   virtual void g();
> };
>
> @@ -158,6 +179,9 @@ struct Y : virtual X {
>   // TEST5: VFTable indices for 'Test5::Y' (1 entries).
>   // TEST5-NEXT: 0 | void Test5::Y::h()
>
> +  // MANGLING-DAG: @"\01??_7Y at Test5@@6B01@@"
> +  // MANGLING-DAG: @"\01??_7Y at Test5@@6BX at 1@@"
> +
>   virtual void h();
> };
>
> @@ -172,6 +196,8 @@ struct X : A, virtual Empty {
>   // TEST6-NEXT: 1 | void A::z()
>
>   // TEST6-NOT: VFTable indices for 'Test6::X'
> +
> +  // MANGLING-DAG: @"\01??_7X at Test6@@6B@"
> };
>
> X x;
> @@ -179,7 +205,9 @@ X x;
>
> namespace Test7 {
>
> -struct X : C { };
> +struct X : C {
> +  // MANGLING-DAG: @"\01??_7X at Test7@@6B@"
> +};
>
> struct Y : virtual X {
>   // TEST7: VFTable for 'A' in 'C' in 'Test7::X' in 'Test7::Y' (2 entries).
> @@ -191,6 +219,8 @@ struct Y : virtual X {
>   // TEST7-NEXT: 0 | this adjustment: 12 non-virtual
>
>   // TEST7-NOT: VFTable indices for 'Test7::Y'
> +
> +  // MANGLING-DAG: @"\01??_7Y at Test7@@6B@"
> };
>
> Y y;
> @@ -210,6 +240,9 @@ struct X : D, C {
>   // TEST8: VFTable indices for 'Test8::X' (1 entries).
>   // TEST8-NEXT: via vbtable index 1, vfptr at offset 0
>
> +  // MANGLING-DAG: @"\01??_7X at Test8@@6BA@@@"
> +  // MANGLING-DAG: @"\01??_7X at Test8@@6BD@@@"
> +
>   virtual void f();
> };
>
> @@ -231,6 +264,9 @@ struct Y : virtual X {
>   // TEST9-Y: VFTable indices for 'Test9::Y' (1 entries).
>   // TEST9-Y-NEXT: 0 | void Test9::Y::h()
>
> +  // MANGLING-DAG: @"\01??_7Y at Test9@@6B01@@"
> +  // MANGLING-DAG: @"\01??_7Y at Test9@@6BX at 1@@"
> +
>   virtual void h();
> };
>
> @@ -248,6 +284,13 @@ struct Z : Y, virtual B {
>   // TEST9-Z-NEXT: 0 | void B::g()
>
>   // TEST9-Z-NOT: VFTable indices for 'Test9::Z'
> +
> +  // MANGLING-DAG: @"\01??_7Z at Test9@@6BX at 1@@"
> +  // MANGLING-DAG: @"\01??_7Z at Test9@@6BY at 1@@"
> +
> +  // FIXME this one is wrong:
> +  // INCORRECT MANGLING-DAG: @"\01??_7Z at Test9@@6BB@@@"
> +  // MANGLING-DAG-SHOULD-BE: @"\01??_7Z at Test9@@6B@"
> };
>
> Z z;
> @@ -275,6 +318,16 @@ struct W : Z, D, virtual A, virtual B {
>   // TEST9-W-NEXT: 0 | this adjustment: -8 non-virtual
>
>   // TEST9-W-NOT: VFTable indices for 'Test9::W'
> +
> +  // MANGLING-DAG: @"\01??_7W at Test9@@6BA@@@"
> +  // MANGLING-DAG: @"\01??_7W at Test9@@6BD@@@"
> +  // MANGLING-DAG: @"\01??_7W at Test9@@6BX at 1@@"
> +
> +  // FIXME: these two are wrong:
> +  // INCORRECT MANGLING-DAG: @"\01??_7W at Test9@@6BB@@@"
> +  // MANGLING-DAG-SHOULD-BE: @"\01??_7W at Test9@@6B@"
> +  // INCORRECT MANGLING-DAG: @"\01??_7W at Test9@@6BY at 1@Z at 1@@"
> +  // MANGLING-DAG-SHOULD-BE: @"\01??_7W at Test9@@6BY at 1@@"
> };
>
> W w;
> @@ -320,6 +373,16 @@ struct T : Z, D, virtual A, virtual B {
>   // TEST9-T-NEXT: via vbtable index 2, vfptr at offset 0
>   // TEST9-T-NEXT: 0 | void Test9::T::g()
>
> +  // MANGLING-DAG: @"\01??_7T at Test9@@6BA@@@"
> +  // MANGLING-DAG: @"\01??_7T at Test9@@6BD@@@"
> +  // MANGLING-DAG: @"\01??_7T at Test9@@6BX at 1@@"
> +
> +  // FIXME: these two are wrong:
> +  // INCORRECT MANGLING-DAG: @"\01??_7T at Test9@@6BB@@@"
> +  // MANGLING-DAG-SHOULD-BE: @"\01??_7T at Test9@@6B@"
> +  // INCORRECT MANGLING-DAG: @"\01??_7T at Test9@@6BY at 1@Z at 1@@"
> +  // MANGLING-DAG-SHOULD-BE: @"\01??_7T at Test9@@6BY at 1@@"
> +
>   virtual void f();
>   virtual void g();
>   virtual void h();
>
> Modified: cfe/trunk/test/CodeGenCXX/virtual-base-destructor-call.cpp
> URL:
> http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGenCXX/virtual-base-destructor-call.cpp?rev=191523&r1=191522&r2=191523&view=diff
> ==============================================================================
> --- cfe/trunk/test/CodeGenCXX/virtual-base-destructor-call.cpp (original)
> +++ cfe/trunk/test/CodeGenCXX/virtual-base-destructor-call.cpp Fri Sep 27
> 09:48:01 2013
> @@ -27,12 +27,6 @@ int main() {
> //  CHECK: call {{.*}} @_ZN13basic_istreamIcED2Ev
> //  CHECK: }
>
> -// basic_iostream's deleting dtor calls its complete dtor, then
> -// operator delete().
> -//  CHECK: define linkonce_odr {{.*}}
> @_ZN14basic_iostreamIcED0Ev(%struct.basic_iostream* {{.*}}%this)
> unnamed_addr
> -//  CHECK: call {{.*}} @_ZN14basic_iostreamIcED1Ev
> -//  CHECK: call {{.*}} @_ZdlPv
> -
> // basic_istream's complete dtor calls the base dtor,
> // then its virtual base's base dtor.
> //  CHECK: define linkonce_odr {{.*}}
> @_ZN13basic_istreamIcED1Ev(%struct.basic_istream* {{.*}}%this) unnamed_addr
> @@ -45,6 +39,12 @@ int main() {
> //  CHECK: call {{.*}} @_ZN13basic_istreamIcED1Ev
> //  CHECK: call {{.*}} @_ZdlPv
>
> +// basic_iostream's deleting dtor calls its complete dtor, then
> +// operator delete().
> +//  CHECK: define linkonce_odr {{.*}}
> @_ZN14basic_iostreamIcED0Ev(%struct.basic_iostream* {{.*}}%this)
> unnamed_addr
> +//  CHECK: call {{.*}} @_ZN14basic_iostreamIcED1Ev
> +//  CHECK: call {{.*}} @_ZdlPv
> +
> // basic_istream's base dtor is a no-op.
> //  CHECK: define linkonce_odr {{.*}}
> @_ZN13basic_istreamIcED2Ev(%struct.basic_istream* {{.*}}%this, i8** %vtt)
> unnamed_addr
> //  CHECK-NOT: call
>
>
> _______________________________________________
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> cfe-commits at cs.uiuc.edu
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>
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