Create a new Serialization module that contains all the PCH code, and will contain all the module code in the future. Update the Makefiles, CMake projects and the Xcode project. I hope I did everything right for Xcode. No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111258 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 1600 insertions, 0 deletions

diff --git a/lib/Serialization/PCHReaderDecl.cpp b/lib/Serialization/PCHReaderDecl.cpp
new file mode 100644
index 0000000000..9b27b036b6
--- /dev/null
+++ b/lib/Serialization/PCHReaderDecl.cpp
@@ -0,0 +1,1600 @@
+//===--- PCHReaderDecl.cpp - Decl Deserialization ---------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the PCHReader::ReadDeclRecord method, which is the
+// entrypoint for loading a decl.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Serialization/PCHReader.h"
+#include "clang/AST/ASTConsumer.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/AST/DeclVisitor.h"
+#include "clang/AST/DeclGroup.h"
+#include "clang/AST/DeclCXX.h"
+#include "clang/AST/DeclTemplate.h"
+#include "clang/AST/Expr.h"
+using namespace clang;
+
+
+//===----------------------------------------------------------------------===//
+// Declaration deserialization
+//===----------------------------------------------------------------------===//
+
+namespace clang {
+  class PCHDeclReader : public DeclVisitor<PCHDeclReader, void> {
+    PCHReader &Reader;
+    llvm::BitstreamCursor &Cursor;
+    const pch::DeclID ThisDeclID;
+    const PCHReader::RecordData &Record;
+    unsigned &Idx;
+    pch::TypeID TypeIDForTypeDecl;
+
+    uint64_t GetCurrentCursorOffset();
+
+  public:
+    PCHDeclReader(PCHReader &Reader, llvm::BitstreamCursor &Cursor,
+                  pch::DeclID thisDeclID, const PCHReader::RecordData &Record,
+                  unsigned &Idx)
+      : Reader(Reader), Cursor(Cursor), ThisDeclID(thisDeclID), Record(Record),
+        Idx(Idx), TypeIDForTypeDecl(0) { }
+
+    void Visit(Decl *D);
+
+    void VisitDecl(Decl *D);
+    void VisitTranslationUnitDecl(TranslationUnitDecl *TU);
+    void VisitNamedDecl(NamedDecl *ND);
+    void VisitNamespaceDecl(NamespaceDecl *D);
+    void VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
+    void VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
+    void VisitTypeDecl(TypeDecl *TD);
+    void VisitTypedefDecl(TypedefDecl *TD);
+    void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
+    void VisitTagDecl(TagDecl *TD);
+    void VisitEnumDecl(EnumDecl *ED);
+    void VisitRecordDecl(RecordDecl *RD);
+    void VisitCXXRecordDecl(CXXRecordDecl *D);
+    void VisitClassTemplateSpecializationDecl(
+                                            ClassTemplateSpecializationDecl *D);
+    void VisitClassTemplatePartialSpecializationDecl(
+                                     ClassTemplatePartialSpecializationDecl *D);
+    void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D);
+    void VisitValueDecl(ValueDecl *VD);
+    void VisitEnumConstantDecl(EnumConstantDecl *ECD);
+    void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D);
+    void VisitDeclaratorDecl(DeclaratorDecl *DD);
+    void VisitFunctionDecl(FunctionDecl *FD);
+    void VisitCXXMethodDecl(CXXMethodDecl *D);
+    void VisitCXXConstructorDecl(CXXConstructorDecl *D);
+    void VisitCXXDestructorDecl(CXXDestructorDecl *D);
+    void VisitCXXConversionDecl(CXXConversionDecl *D);
+    void VisitFieldDecl(FieldDecl *FD);
+    void VisitVarDecl(VarDecl *VD);
+    void VisitImplicitParamDecl(ImplicitParamDecl *PD);
+    void VisitParmVarDecl(ParmVarDecl *PD);
+    void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D);
+    void VisitTemplateDecl(TemplateDecl *D);
+    void VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D);
+    void VisitClassTemplateDecl(ClassTemplateDecl *D);
+    void VisitFunctionTemplateDecl(FunctionTemplateDecl *D);
+    void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
+    void VisitUsingDecl(UsingDecl *D);
+    void VisitUsingShadowDecl(UsingShadowDecl *D);
+    void VisitLinkageSpecDecl(LinkageSpecDecl *D);
+    void VisitFileScopeAsmDecl(FileScopeAsmDecl *AD);
+    void VisitAccessSpecDecl(AccessSpecDecl *D);
+    void VisitFriendDecl(FriendDecl *D);
+    void VisitFriendTemplateDecl(FriendTemplateDecl *D);
+    void VisitStaticAssertDecl(StaticAssertDecl *D);
+    void VisitBlockDecl(BlockDecl *BD);
+
+    std::pair<uint64_t, uint64_t> VisitDeclContext(DeclContext *DC);
+    template <typename T> void VisitRedeclarable(Redeclarable<T> *D);
+
+    // FIXME: Reorder according to DeclNodes.td?
+    void VisitObjCMethodDecl(ObjCMethodDecl *D);
+    void VisitObjCContainerDecl(ObjCContainerDecl *D);
+    void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
+    void VisitObjCIvarDecl(ObjCIvarDecl *D);
+    void VisitObjCProtocolDecl(ObjCProtocolDecl *D);
+    void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D);
+    void VisitObjCClassDecl(ObjCClassDecl *D);
+    void VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *D);
+    void VisitObjCCategoryDecl(ObjCCategoryDecl *D);
+    void VisitObjCImplDecl(ObjCImplDecl *D);
+    void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
+    void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
+    void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
+    void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
+    void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
+  };
+}
+
+uint64_t PCHDeclReader::GetCurrentCursorOffset() {
+  uint64_t Off = 0;
+  for (unsigned I = 0, N = Reader.Chain.size(); I != N; ++I) {
+    PCHReader::PerFileData &F = *Reader.Chain[N - I - 1];
+    if (&Cursor == &F.DeclsCursor) {
+      Off += F.DeclsCursor.GetCurrentBitNo();
+      break;
+    }
+    Off += F.SizeInBits;
+  }
+  return Off;
+}
+
+void PCHDeclReader::Visit(Decl *D) {
+  DeclVisitor<PCHDeclReader, void>::Visit(D);
+
+  if (TypeDecl *TD = dyn_cast<TypeDecl>(D)) {
+    // if we have a fully initialized TypeDecl, we can safely read its type now.
+    TD->setTypeForDecl(Reader.GetType(TypeIDForTypeDecl).getTypePtr());
+  } else if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
+    // FunctionDecl's body was written last after all other Stmts/Exprs.
+    if (Record[Idx++])
+      FD->setLazyBody(GetCurrentCursorOffset());
+  }
+}
+
+void PCHDeclReader::VisitDecl(Decl *D) {
+  D->setDeclContext(cast_or_null<DeclContext>(Reader.GetDecl(Record[Idx++])));
+  D->setLexicalDeclContext(
+                     cast_or_null<DeclContext>(Reader.GetDecl(Record[Idx++])));
+  D->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  D->setInvalidDecl(Record[Idx++]);
+  if (Record[Idx++])
+    D->initAttrs(Reader.ReadAttributes(Cursor));
+  D->setImplicit(Record[Idx++]);
+  D->setUsed(Record[Idx++]);
+  D->setAccess((AccessSpecifier)Record[Idx++]);
+  D->setPCHLevel(Record[Idx++] + 1);
+}
+
+void PCHDeclReader::VisitTranslationUnitDecl(TranslationUnitDecl *TU) {
+  VisitDecl(TU);
+  TU->setAnonymousNamespace(
+                    cast_or_null<NamespaceDecl>(Reader.GetDecl(Record[Idx++])));
+}
+
+void PCHDeclReader::VisitNamedDecl(NamedDecl *ND) {
+  VisitDecl(ND);
+  ND->setDeclName(Reader.ReadDeclarationName(Record, Idx));
+}
+
+void PCHDeclReader::VisitTypeDecl(TypeDecl *TD) {
+  VisitNamedDecl(TD);
+  // Delay type reading until after we have fully initialized the decl.
+  TypeIDForTypeDecl = Record[Idx++];
+}
+
+void PCHDeclReader::VisitTypedefDecl(TypedefDecl *TD) {
+  VisitTypeDecl(TD);
+  TD->setTypeSourceInfo(Reader.GetTypeSourceInfo(Cursor, Record, Idx));
+}
+
+void PCHDeclReader::VisitTagDecl(TagDecl *TD) {
+  VisitTypeDecl(TD);
+  TD->IdentifierNamespace = Record[Idx++];
+  VisitRedeclarable(TD);
+  TD->setTagKind((TagDecl::TagKind)Record[Idx++]);
+  TD->setDefinition(Record[Idx++]);
+  TD->setEmbeddedInDeclarator(Record[Idx++]);
+  TD->setRBraceLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  TD->setTagKeywordLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  // FIXME: maybe read optional qualifier and its range.
+  TD->setTypedefForAnonDecl(
+                    cast_or_null<TypedefDecl>(Reader.GetDecl(Record[Idx++])));
+}
+
+void PCHDeclReader::VisitEnumDecl(EnumDecl *ED) {
+  VisitTagDecl(ED);
+  ED->setIntegerType(Reader.GetType(Record[Idx++]));
+  ED->setPromotionType(Reader.GetType(Record[Idx++]));
+  ED->setNumPositiveBits(Record[Idx++]);
+  ED->setNumNegativeBits(Record[Idx++]);
+  ED->setInstantiationOfMemberEnum(
+                         cast_or_null<EnumDecl>(Reader.GetDecl(Record[Idx++])));
+}
+
+void PCHDeclReader::VisitRecordDecl(RecordDecl *RD) {
+  VisitTagDecl(RD);
+  RD->setHasFlexibleArrayMember(Record[Idx++]);
+  RD->setAnonymousStructOrUnion(Record[Idx++]);
+  RD->setHasObjectMember(Record[Idx++]);
+}
+
+void PCHDeclReader::VisitValueDecl(ValueDecl *VD) {
+  VisitNamedDecl(VD);
+  VD->setType(Reader.GetType(Record[Idx++]));
+}
+
+void PCHDeclReader::VisitEnumConstantDecl(EnumConstantDecl *ECD) {
+  VisitValueDecl(ECD);
+  if (Record[Idx++])
+    ECD->setInitExpr(Reader.ReadExpr(Cursor));
+  ECD->setInitVal(Reader.ReadAPSInt(Record, Idx));
+}
+
+void PCHDeclReader::VisitDeclaratorDecl(DeclaratorDecl *DD) {
+  VisitValueDecl(DD);
+  TypeSourceInfo *TInfo = Reader.GetTypeSourceInfo(Cursor, Record, Idx);
+  if (TInfo)
+    DD->setTypeSourceInfo(TInfo);
+  // FIXME: read optional qualifier and its range.
+}
+
+void PCHDeclReader::VisitFunctionDecl(FunctionDecl *FD) {
+  VisitDeclaratorDecl(FD);
+  // FIXME: read DeclarationNameLoc.
+
+  FD->IdentifierNamespace = Record[Idx++];
+  switch ((FunctionDecl::TemplatedKind)Record[Idx++]) {
+  default: assert(false && "Unhandled TemplatedKind!");
+    break;
+  case FunctionDecl::TK_NonTemplate:
+    break;
+  case FunctionDecl::TK_FunctionTemplate:
+    FD->setDescribedFunctionTemplate(
+                     cast<FunctionTemplateDecl>(Reader.GetDecl(Record[Idx++])));
+    break;
+  case FunctionDecl::TK_MemberSpecialization: {
+    FunctionDecl *InstFD = cast<FunctionDecl>(Reader.GetDecl(Record[Idx++]));
+    TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++];
+    SourceLocation POI = Reader.ReadSourceLocation(Record, Idx);
+    FD->setInstantiationOfMemberFunction(InstFD, TSK);
+    FD->getMemberSpecializationInfo()->setPointOfInstantiation(POI);
+    break;
+  }
+  case FunctionDecl::TK_FunctionTemplateSpecialization: {
+    FunctionTemplateDecl *Template
+      = cast<FunctionTemplateDecl>(Reader.GetDecl(Record[Idx++]));
+    TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++];
+    
+    // Template arguments.
+    llvm::SmallVector<TemplateArgument, 8> TemplArgs;
+    Reader.ReadTemplateArgumentList(TemplArgs, Cursor, Record, Idx);
+    
+    // Template args as written.
+    llvm::SmallVector<TemplateArgumentLoc, 8> TemplArgLocs;
+    SourceLocation LAngleLoc, RAngleLoc;
+    if (Record[Idx++]) {  // TemplateArgumentsAsWritten != 0
+      unsigned NumTemplateArgLocs = Record[Idx++];
+      TemplArgLocs.reserve(NumTemplateArgLocs);
+      for (unsigned i=0; i != NumTemplateArgLocs; ++i)
+        TemplArgLocs.push_back(
+            Reader.ReadTemplateArgumentLoc(Cursor, Record, Idx));
+  
+      LAngleLoc = Reader.ReadSourceLocation(Record, Idx);
+      RAngleLoc = Reader.ReadSourceLocation(Record, Idx);
+    }
+    
+    SourceLocation POI = Reader.ReadSourceLocation(Record, Idx);
+
+    if (FD->isCanonicalDecl()) // if canonical add to template's set.
+      FD->setFunctionTemplateSpecialization(Template, TemplArgs.size(),
+                                            TemplArgs.data(), TSK,
+                                            TemplArgLocs.size(),
+                                            TemplArgLocs.data(),
+                                            LAngleLoc, RAngleLoc, POI);
+    break;
+  }
+  case FunctionDecl::TK_DependentFunctionTemplateSpecialization: {
+    // Templates.
+    UnresolvedSet<8> TemplDecls;
+    unsigned NumTemplates = Record[Idx++];
+    while (NumTemplates--)
+      TemplDecls.addDecl(cast<NamedDecl>(Reader.GetDecl(Record[Idx++])));
+    
+    // Templates args.
+    TemplateArgumentListInfo TemplArgs;
+    unsigned NumArgs = Record[Idx++];
+    while (NumArgs--)
+      TemplArgs.addArgument(Reader.ReadTemplateArgumentLoc(Cursor,Record, Idx));
+    TemplArgs.setLAngleLoc(Reader.ReadSourceLocation(Record, Idx));
+    TemplArgs.setRAngleLoc(Reader.ReadSourceLocation(Record, Idx));
+    
+    FD->setDependentTemplateSpecialization(*Reader.getContext(),
+                                           TemplDecls, TemplArgs);
+    break;
+  }
+  }
+
+  // FunctionDecl's body is handled last at PCHReaderDecl::Visit,
+  // after everything else is read.
+
+  VisitRedeclarable(FD);
+  FD->setStorageClass((FunctionDecl::StorageClass)Record[Idx++]);
+  FD->setStorageClassAsWritten((FunctionDecl::StorageClass)Record[Idx++]);
+  FD->setInlineSpecified(Record[Idx++]);
+  FD->setVirtualAsWritten(Record[Idx++]);
+  FD->setPure(Record[Idx++]);
+  FD->setHasInheritedPrototype(Record[Idx++]);
+  FD->setHasWrittenPrototype(Record[Idx++]);
+  FD->setDeleted(Record[Idx++]);
+  FD->setTrivial(Record[Idx++]);
+  FD->setCopyAssignment(Record[Idx++]);
+  FD->setHasImplicitReturnZero(Record[Idx++]);
+  FD->setLocEnd(SourceLocation::getFromRawEncoding(Record[Idx++]));
+
+  // Read in the parameters.
+  unsigned NumParams = Record[Idx++];
+  llvm::SmallVector<ParmVarDecl *, 16> Params;
+  Params.reserve(NumParams);
+  for (unsigned I = 0; I != NumParams; ++I)
+    Params.push_back(cast<ParmVarDecl>(Reader.GetDecl(Record[Idx++])));
+  FD->setParams(Params.data(), NumParams);
+}
+
+void PCHDeclReader::VisitObjCMethodDecl(ObjCMethodDecl *MD) {
+  VisitNamedDecl(MD);
+  if (Record[Idx++]) {
+    // In practice, this won't be executed (since method definitions
+    // don't occur in header files).
+    MD->setBody(Reader.ReadStmt(Cursor));
+    MD->setSelfDecl(cast<ImplicitParamDecl>(Reader.GetDecl(Record[Idx++])));
+    MD->setCmdDecl(cast<ImplicitParamDecl>(Reader.GetDecl(Record[Idx++])));
+  }
+  MD->setInstanceMethod(Record[Idx++]);
+  MD->setVariadic(Record[Idx++]);
+  MD->setSynthesized(Record[Idx++]);
+  MD->setDefined(Record[Idx++]);
+  MD->setDeclImplementation((ObjCMethodDecl::ImplementationControl)Record[Idx++]);
+  MD->setObjCDeclQualifier((Decl::ObjCDeclQualifier)Record[Idx++]);
+  MD->setNumSelectorArgs(unsigned(Record[Idx++]));
+  MD->setResultType(Reader.GetType(Record[Idx++]));
+  MD->setResultTypeSourceInfo(Reader.GetTypeSourceInfo(Cursor, Record, Idx));
+  MD->setEndLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  unsigned NumParams = Record[Idx++];
+  llvm::SmallVector<ParmVarDecl *, 16> Params;
+  Params.reserve(NumParams);
+  for (unsigned I = 0; I != NumParams; ++I)
+    Params.push_back(cast<ParmVarDecl>(Reader.GetDecl(Record[Idx++])));
+  MD->setMethodParams(*Reader.getContext(), Params.data(), NumParams,
+                      NumParams);
+}
+
+void PCHDeclReader::VisitObjCContainerDecl(ObjCContainerDecl *CD) {
+  VisitNamedDecl(CD);
+  SourceLocation A = SourceLocation::getFromRawEncoding(Record[Idx++]);
+  SourceLocation B = SourceLocation::getFromRawEncoding(Record[Idx++]);
+  CD->setAtEndRange(SourceRange(A, B));
+}
+
+void PCHDeclReader::VisitObjCInterfaceDecl(ObjCInterfaceDecl *ID) {
+  VisitObjCContainerDecl(ID);
+  ID->setTypeForDecl(Reader.GetType(Record[Idx++]).getTypePtr());
+  ID->setSuperClass(cast_or_null<ObjCInterfaceDecl>
+                       (Reader.GetDecl(Record[Idx++])));
+  unsigned NumProtocols = Record[Idx++];
+  llvm::SmallVector<ObjCProtocolDecl *, 16> Protocols;
+  Protocols.reserve(NumProtocols);
+  for (unsigned I = 0; I != NumProtocols; ++I)
+    Protocols.push_back(cast<ObjCProtocolDecl>(Reader.GetDecl(Record[Idx++])));
+  llvm::SmallVector<SourceLocation, 16> ProtoLocs;
+  ProtoLocs.reserve(NumProtocols);
+  for (unsigned I = 0; I != NumProtocols; ++I)
+    ProtoLocs.push_back(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  ID->setProtocolList(Protocols.data(), NumProtocols, ProtoLocs.data(),
+                      *Reader.getContext());
+  unsigned NumIvars = Record[Idx++];
+  llvm::SmallVector<ObjCIvarDecl *, 16> IVars;
+  IVars.reserve(NumIvars);
+  for (unsigned I = 0; I != NumIvars; ++I)
+    IVars.push_back(cast<ObjCIvarDecl>(Reader.GetDecl(Record[Idx++])));
+  ID->setCategoryList(
+               cast_or_null<ObjCCategoryDecl>(Reader.GetDecl(Record[Idx++])));
+  ID->setForwardDecl(Record[Idx++]);
+  ID->setImplicitInterfaceDecl(Record[Idx++]);
+  ID->setClassLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  ID->setSuperClassLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  ID->setLocEnd(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHDeclReader::VisitObjCIvarDecl(ObjCIvarDecl *IVD) {
+  VisitFieldDecl(IVD);
+  IVD->setAccessControl((ObjCIvarDecl::AccessControl)Record[Idx++]);
+  bool synth = Record[Idx++];
+  IVD->setSynthesize(synth);
+}
+
+void PCHDeclReader::VisitObjCProtocolDecl(ObjCProtocolDecl *PD) {
+  VisitObjCContainerDecl(PD);
+  PD->setForwardDecl(Record[Idx++]);
+  PD->setLocEnd(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  unsigned NumProtoRefs = Record[Idx++];
+  llvm::SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
+  ProtoRefs.reserve(NumProtoRefs);
+  for (unsigned I = 0; I != NumProtoRefs; ++I)
+    ProtoRefs.push_back(cast<ObjCProtocolDecl>(Reader.GetDecl(Record[Idx++])));
+  llvm::SmallVector<SourceLocation, 16> ProtoLocs;
+  ProtoLocs.reserve(NumProtoRefs);
+  for (unsigned I = 0; I != NumProtoRefs; ++I)
+    ProtoLocs.push_back(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  PD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(),
+                      *Reader.getContext());
+}
+
+void PCHDeclReader::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *FD) {
+  VisitFieldDecl(FD);
+}
+
+void PCHDeclReader::VisitObjCClassDecl(ObjCClassDecl *CD) {
+  VisitDecl(CD);
+  unsigned NumClassRefs = Record[Idx++];
+  llvm::SmallVector<ObjCInterfaceDecl *, 16> ClassRefs;
+  ClassRefs.reserve(NumClassRefs);
+  for (unsigned I = 0; I != NumClassRefs; ++I)
+    ClassRefs.push_back(cast<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++])));
+  llvm::SmallVector<SourceLocation, 16> SLocs;
+  SLocs.reserve(NumClassRefs);
+  for (unsigned I = 0; I != NumClassRefs; ++I)
+    SLocs.push_back(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  CD->setClassList(*Reader.getContext(), ClassRefs.data(), SLocs.data(),
+                   NumClassRefs);
+}
+
+void PCHDeclReader::VisitObjCForwardProtocolDecl(ObjCForwardProtocolDecl *FPD) {
+  VisitDecl(FPD);
+  unsigned NumProtoRefs = Record[Idx++];
+  llvm::SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
+  ProtoRefs.reserve(NumProtoRefs);
+  for (unsigned I = 0; I != NumProtoRefs; ++I)
+    ProtoRefs.push_back(cast<ObjCProtocolDecl>(Reader.GetDecl(Record[Idx++])));
+  llvm::SmallVector<SourceLocation, 16> ProtoLocs;
+  ProtoLocs.reserve(NumProtoRefs);
+  for (unsigned I = 0; I != NumProtoRefs; ++I)
+    ProtoLocs.push_back(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  FPD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(),
+                       *Reader.getContext());
+}
+
+void PCHDeclReader::VisitObjCCategoryDecl(ObjCCategoryDecl *CD) {
+  VisitObjCContainerDecl(CD);
+  CD->setClassInterface(cast<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++])));
+  unsigned NumProtoRefs = Record[Idx++];
+  llvm::SmallVector<ObjCProtocolDecl *, 16> ProtoRefs;
+  ProtoRefs.reserve(NumProtoRefs);
+  for (unsigned I = 0; I != NumProtoRefs; ++I)
+    ProtoRefs.push_back(cast<ObjCProtocolDecl>(Reader.GetDecl(Record[Idx++])));
+  llvm::SmallVector<SourceLocation, 16> ProtoLocs;
+  ProtoLocs.reserve(NumProtoRefs);
+  for (unsigned I = 0; I != NumProtoRefs; ++I)
+    ProtoLocs.push_back(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  CD->setProtocolList(ProtoRefs.data(), NumProtoRefs, ProtoLocs.data(),
+                      *Reader.getContext());
+  CD->setNextClassCategory(cast_or_null<ObjCCategoryDecl>(Reader.GetDecl(Record[Idx++])));
+  CD->setAtLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  CD->setCategoryNameLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHDeclReader::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *CAD) {
+  VisitNamedDecl(CAD);
+  CAD->setClassInterface(cast<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++])));
+}
+
+void PCHDeclReader::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
+  VisitNamedDecl(D);
+  D->setAtLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  D->setType(Reader.GetTypeSourceInfo(Cursor, Record, Idx));
+  // FIXME: stable encoding
+  D->setPropertyAttributes(
+                      (ObjCPropertyDecl::PropertyAttributeKind)Record[Idx++]);
+  D->setPropertyAttributesAsWritten(
+                      (ObjCPropertyDecl::PropertyAttributeKind)Record[Idx++]);
+  // FIXME: stable encoding
+  D->setPropertyImplementation(
+                            (ObjCPropertyDecl::PropertyControl)Record[Idx++]);
+  D->setGetterName(Reader.ReadDeclarationName(Record, Idx).getObjCSelector());
+  D->setSetterName(Reader.ReadDeclarationName(Record, Idx).getObjCSelector());
+  D->setGetterMethodDecl(
+                 cast_or_null<ObjCMethodDecl>(Reader.GetDecl(Record[Idx++])));
+  D->setSetterMethodDecl(
+                 cast_or_null<ObjCMethodDecl>(Reader.GetDecl(Record[Idx++])));
+  D->setPropertyIvarDecl(
+                   cast_or_null<ObjCIvarDecl>(Reader.GetDecl(Record[Idx++])));
+}
+
+void PCHDeclReader::VisitObjCImplDecl(ObjCImplDecl *D) {
+  VisitObjCContainerDecl(D);
+  D->setClassInterface(
+              cast_or_null<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++])));
+}
+
+void PCHDeclReader::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
+  VisitObjCImplDecl(D);
+  D->setIdentifier(Reader.GetIdentifierInfo(Record, Idx));
+}
+
+void PCHDeclReader::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
+  VisitObjCImplDecl(D);
+  D->setSuperClass(
+              cast_or_null<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++])));
+  llvm::tie(D->IvarInitializers, D->NumIvarInitializers)
+      = Reader.ReadCXXBaseOrMemberInitializers(Cursor, Record, Idx);
+}
+
+
+void PCHDeclReader::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
+  VisitDecl(D);
+  D->setAtLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  D->setPropertyDecl(
+               cast_or_null<ObjCPropertyDecl>(Reader.GetDecl(Record[Idx++])));
+  D->setPropertyIvarDecl(
+                   cast_or_null<ObjCIvarDecl>(Reader.GetDecl(Record[Idx++])));
+  D->setGetterCXXConstructor(Reader.ReadExpr(Cursor));
+  D->setSetterCXXAssignment(Reader.ReadExpr(Cursor));
+}
+
+void PCHDeclReader::VisitFieldDecl(FieldDecl *FD) {
+  VisitDeclaratorDecl(FD);
+  FD->setMutable(Record[Idx++]);
+  if (Record[Idx++])
+    FD->setBitWidth(Reader.ReadExpr(Cursor));
+  if (!FD->getDeclName()) {
+    FieldDecl *Tmpl = cast_or_null<FieldDecl>(Reader.GetDecl(Record[Idx++]));
+    if (Tmpl)
+      Reader.getContext()->setInstantiatedFromUnnamedFieldDecl(FD, Tmpl);
+  }
+}
+
+void PCHDeclReader::VisitVarDecl(VarDecl *VD) {
+  VisitDeclaratorDecl(VD);
+  VD->setStorageClass((VarDecl::StorageClass)Record[Idx++]);
+  VD->setStorageClassAsWritten((VarDecl::StorageClass)Record[Idx++]);
+  VD->setThreadSpecified(Record[Idx++]);
+  VD->setCXXDirectInitializer(Record[Idx++]);
+  VD->setExceptionVariable(Record[Idx++]);
+  VD->setNRVOVariable(Record[Idx++]);
+  VisitRedeclarable(VD);
+  if (Record[Idx++])
+    VD->setInit(Reader.ReadExpr(Cursor));
+
+  if (Record[Idx++]) { // HasMemberSpecializationInfo.
+    VarDecl *Tmpl = cast<VarDecl>(Reader.GetDecl(Record[Idx++]));
+    TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++];
+    SourceLocation POI = Reader.ReadSourceLocation(Record, Idx);
+    Reader.getContext()->setInstantiatedFromStaticDataMember(VD, Tmpl, TSK,POI);
+  }
+}
+
+void PCHDeclReader::VisitImplicitParamDecl(ImplicitParamDecl *PD) {
+  VisitVarDecl(PD);
+}
+
+void PCHDeclReader::VisitParmVarDecl(ParmVarDecl *PD) {
+  VisitVarDecl(PD);
+  PD->setObjCDeclQualifier((Decl::ObjCDeclQualifier)Record[Idx++]);
+  PD->setHasInheritedDefaultArg(Record[Idx++]);
+  if (Record[Idx++]) // hasUninstantiatedDefaultArg.
+    PD->setUninstantiatedDefaultArg(Reader.ReadExpr(Cursor));
+}
+
+void PCHDeclReader::VisitFileScopeAsmDecl(FileScopeAsmDecl *AD) {
+  VisitDecl(AD);
+  AD->setAsmString(cast<StringLiteral>(Reader.ReadExpr(Cursor)));
+}
+
+void PCHDeclReader::VisitBlockDecl(BlockDecl *BD) {
+  VisitDecl(BD);
+  BD->setBody(cast_or_null<CompoundStmt>(Reader.ReadStmt(Cursor)));
+  BD->setSignatureAsWritten(Reader.GetTypeSourceInfo(Cursor, Record, Idx));
+  unsigned NumParams = Record[Idx++];
+  llvm::SmallVector<ParmVarDecl *, 16> Params;
+  Params.reserve(NumParams);
+  for (unsigned I = 0; I != NumParams; ++I)
+    Params.push_back(cast<ParmVarDecl>(Reader.GetDecl(Record[Idx++])));
+  BD->setParams(Params.data(), NumParams);
+}
+
+void PCHDeclReader::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
+  VisitDecl(D);
+  D->setLanguage((LinkageSpecDecl::LanguageIDs)Record[Idx++]);
+  D->setHasBraces(Record[Idx++]);
+}
+
+void PCHDeclReader::VisitNamespaceDecl(NamespaceDecl *D) {
+  VisitNamedDecl(D);
+  D->setLBracLoc(Reader.ReadSourceLocation(Record, Idx));
+  D->setRBracLoc(Reader.ReadSourceLocation(Record, Idx));
+  D->setNextNamespace(
+                    cast_or_null<NamespaceDecl>(Reader.GetDecl(Record[Idx++])));
+
+  bool IsOriginal = Record[Idx++];
+  D->OrigOrAnonNamespace.setInt(IsOriginal);
+  D->OrigOrAnonNamespace.setPointer(
+                    cast_or_null<NamespaceDecl>(Reader.GetDecl(Record[Idx++])));
+}
+
+void PCHDeclReader::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
+  VisitNamedDecl(D);
+
+  D->setAliasLoc(Reader.ReadSourceLocation(Record, Idx));
+  D->setQualifierRange(Reader.ReadSourceRange(Record, Idx));
+  D->setQualifier(Reader.ReadNestedNameSpecifier(Record, Idx));
+  D->setTargetNameLoc(Reader.ReadSourceLocation(Record, Idx));
+  D->setAliasedNamespace(cast<NamedDecl>(Reader.GetDecl(Record[Idx++])));
+}
+
+void PCHDeclReader::VisitUsingDecl(UsingDecl *D) {
+  VisitNamedDecl(D);
+  D->setUsingLocation(Reader.ReadSourceLocation(Record, Idx));
+  D->setNestedNameRange(Reader.ReadSourceRange(Record, Idx));
+  D->setTargetNestedNameDecl(Reader.ReadNestedNameSpecifier(Record, Idx));
+  // FIXME: read the DNLoc component.
+
+  // FIXME: It would probably be more efficient to read these into a vector
+  // and then re-cosntruct the shadow decl set over that vector since it
+  // would avoid existence checks.
+  unsigned NumShadows = Record[Idx++];
+  for(unsigned I = 0; I != NumShadows; ++I) {
+    // Avoid invariant checking of UsingDecl::addShadowDecl, the decl may still
+    // be initializing.
+    D->Shadows.insert(cast<UsingShadowDecl>(Reader.GetDecl(Record[Idx++])));
+  }
+  D->setTypeName(Record[Idx++]);
+  NamedDecl *Pattern = cast_or_null<NamedDecl>(Reader.GetDecl(Record[Idx++]));
+  if (Pattern)
+    Reader.getContext()->setInstantiatedFromUsingDecl(D, Pattern);
+}
+
+void PCHDeclReader::VisitUsingShadowDecl(UsingShadowDecl *D) {
+  VisitNamedDecl(D);
+  D->setTargetDecl(cast<NamedDecl>(Reader.GetDecl(Record[Idx++])));
+  D->setUsingDecl(cast<UsingDecl>(Reader.GetDecl(Record[Idx++])));
+  UsingShadowDecl *Pattern
+      = cast_or_null<UsingShadowDecl>(Reader.GetDecl(Record[Idx++]));
+  if (Pattern)
+    Reader.getContext()->setInstantiatedFromUsingShadowDecl(D, Pattern);
+}
+
+void PCHDeclReader::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
+  VisitNamedDecl(D);
+  D->setNamespaceKeyLocation(Reader.ReadSourceLocation(Record, Idx));
+  D->setQualifierRange(Reader.ReadSourceRange(Record, Idx));
+  D->setQualifier(Reader.ReadNestedNameSpecifier(Record, Idx));
+  D->setIdentLocation(Reader.ReadSourceLocation(Record, Idx));
+  D->setNominatedNamespace(cast<NamedDecl>(Reader.GetDecl(Record[Idx++])));
+  D->setCommonAncestor(cast_or_null<DeclContext>(
+                                                Reader.GetDecl(Record[Idx++])));
+}
+
+void PCHDeclReader::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) {
+  VisitValueDecl(D);
+  D->setTargetNestedNameRange(Reader.ReadSourceRange(Record, Idx));
+  D->setUsingLoc(Reader.ReadSourceLocation(Record, Idx));
+  D->setTargetNestedNameSpecifier(Reader.ReadNestedNameSpecifier(Record, Idx));
+  // FIXME: read the DNLoc component.
+}
+
+void PCHDeclReader::VisitUnresolvedUsingTypenameDecl(
+                                               UnresolvedUsingTypenameDecl *D) {
+  VisitTypeDecl(D);
+  D->setTargetNestedNameRange(Reader.ReadSourceRange(Record, Idx));
+  D->setUsingLoc(Reader.ReadSourceLocation(Record, Idx));
+  D->setTypenameLoc(Reader.ReadSourceLocation(Record, Idx));
+  D->setTargetNestedNameSpecifier(Reader.ReadNestedNameSpecifier(Record, Idx));
+}
+
+void PCHDeclReader::VisitCXXRecordDecl(CXXRecordDecl *D) {
+  ASTContext &C = *Reader.getContext();
+
+  // We need to allocate the DefinitionData struct ahead of VisitRecordDecl
+  // so that the other CXXRecordDecls can get a pointer even when the owner
+  // is still initializing.
+  bool OwnsDefinitionData = false;
+  enum DataOwnership { Data_NoDefData, Data_Owner, Data_NotOwner };
+  switch ((DataOwnership)Record[Idx++]) {
+  default:
+    assert(0 && "Out of sync with PCHDeclWriter or messed up reading");
+  case Data_NoDefData:
+    break;
+  case Data_Owner:
+    OwnsDefinitionData = true;
+    D->DefinitionData = new (C) struct CXXRecordDecl::DefinitionData(D);
+    break;
+  case Data_NotOwner:
+    D->DefinitionData
+        = cast<CXXRecordDecl>(Reader.GetDecl(Record[Idx++]))->DefinitionData;
+    break;
+  }
+
+  VisitRecordDecl(D);
+
+  if (OwnsDefinitionData) {
+    assert(D->DefinitionData);
+    struct CXXRecordDecl::DefinitionData &Data = *D->DefinitionData;
+
+    Data.UserDeclaredConstructor = Record[Idx++];
+    Data.UserDeclaredCopyConstructor = Record[Idx++];
+    Data.UserDeclaredCopyAssignment = Record[Idx++];
+    Data.UserDeclaredDestructor = Record[Idx++];
+    Data.Aggregate = Record[Idx++];
+    Data.PlainOldData = Record[Idx++];
+    Data.Empty = Record[Idx++];
+    Data.Polymorphic = Record[Idx++];
+    Data.Abstract = Record[Idx++];
+    Data.HasTrivialConstructor = Record[Idx++];
+    Data.HasTrivialCopyConstructor = Record[Idx++];
+    Data.HasTrivialCopyAssignment = Record[Idx++];
+    Data.HasTrivialDestructor = Record[Idx++];
+    Data.ComputedVisibleConversions = Record[Idx++];
+    Data.DeclaredDefaultConstructor = Record[Idx++];
+    Data.DeclaredCopyConstructor = Record[Idx++];
+    Data.DeclaredCopyAssignment = Record[Idx++];
+    Data.DeclaredDestructor = Record[Idx++];
+
+    // setBases() is unsuitable since it may try to iterate the bases of an
+    // uninitialized base.
+    Data.NumBases = Record[Idx++];
+    Data.Bases = new(C) CXXBaseSpecifier [Data.NumBases];
+    for (unsigned i = 0; i != Data.NumBases; ++i)
+      Data.Bases[i] = Reader.ReadCXXBaseSpecifier(Cursor, Record, Idx);
+
+    // FIXME: Make VBases lazily computed when needed to avoid storing them.
+    Data.NumVBases = Record[Idx++];
+    Data.VBases = new(C) CXXBaseSpecifier [Data.NumVBases];
+    for (unsigned i = 0; i != Data.NumVBases; ++i)
+      Data.VBases[i] = Reader.ReadCXXBaseSpecifier(Cursor, Record, Idx);
+
+    Reader.ReadUnresolvedSet(Data.Conversions, Record, Idx);
+    Reader.ReadUnresolvedSet(Data.VisibleConversions, Record, Idx);
+    assert(Data.Definition && "Data.Definition should be already set!");
+    Data.FirstFriend
+        = cast_or_null<FriendDecl>(Reader.GetDecl(Record[Idx++]));
+  }
+
+  enum CXXRecKind {
+    CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization
+  };
+  switch ((CXXRecKind)Record[Idx++]) {
+  default:
+    assert(false && "Out of sync with PCHDeclWriter::VisitCXXRecordDecl?");
+  case CXXRecNotTemplate:
+    break;
+  case CXXRecTemplate:
+    D->setDescribedClassTemplate(
+                        cast<ClassTemplateDecl>(Reader.GetDecl(Record[Idx++])));
+    break;
+  case CXXRecMemberSpecialization: {
+    CXXRecordDecl *RD = cast<CXXRecordDecl>(Reader.GetDecl(Record[Idx++]));
+    TemplateSpecializationKind TSK = (TemplateSpecializationKind)Record[Idx++];
+    SourceLocation POI = Reader.ReadSourceLocation(Record, Idx);
+    D->setInstantiationOfMemberClass(RD, TSK);
+    D->getMemberSpecializationInfo()->setPointOfInstantiation(POI);
+    break;
+  }
+  }
+}
+
+void PCHDeclReader::VisitCXXMethodDecl(CXXMethodDecl *D) {
+  VisitFunctionDecl(D);
+  unsigned NumOverridenMethods = Record[Idx++];
+  while (NumOverridenMethods--) {
+    CXXMethodDecl *MD = cast<CXXMethodDecl>(Reader.GetDecl(Record[Idx++]));
+    // Avoid invariant checking of CXXMethodDecl::addOverriddenMethod,
+    // MD may be initializing.
+    Reader.getContext()->addOverriddenMethod(D, MD);
+  }
+}
+
+void PCHDeclReader::VisitCXXConstructorDecl(CXXConstructorDecl *D) {
+  VisitCXXMethodDecl(D);
+  
+  D->IsExplicitSpecified = Record[Idx++];
+  D->ImplicitlyDefined = Record[Idx++];
+  llvm::tie(D->BaseOrMemberInitializers, D->NumBaseOrMemberInitializers)
+      = Reader.ReadCXXBaseOrMemberInitializers(Cursor, Record, Idx);
+}
+
+void PCHDeclReader::VisitCXXDestructorDecl(CXXDestructorDecl *D) {
+  VisitCXXMethodDecl(D);
+
+  D->ImplicitlyDefined = Record[Idx++];
+  D->OperatorDelete = cast_or_null<FunctionDecl>(Reader.GetDecl(Record[Idx++]));
+}
+
+void PCHDeclReader::VisitCXXConversionDecl(CXXConversionDecl *D) {
+  VisitCXXMethodDecl(D);
+  D->IsExplicitSpecified = Record[Idx++];
+}
+
+void PCHDeclReader::VisitAccessSpecDecl(AccessSpecDecl *D) {
+  VisitDecl(D);
+  D->setColonLoc(Reader.ReadSourceLocation(Record, Idx));
+}
+
+void PCHDeclReader::VisitFriendDecl(FriendDecl *D) {
+  VisitDecl(D);
+  if (Record[Idx++])
+    D->Friend = Reader.GetTypeSourceInfo(Cursor, Record, Idx);
+  else
+    D->Friend = cast<NamedDecl>(Reader.GetDecl(Record[Idx++]));
+  D->NextFriend = cast_or_null<FriendDecl>(Reader.GetDecl(Record[Idx++]));
+  D->FriendLoc = Reader.ReadSourceLocation(Record, Idx);
+}
+
+void PCHDeclReader::VisitFriendTemplateDecl(FriendTemplateDecl *D) {
+  VisitDecl(D);
+  unsigned NumParams = Record[Idx++];
+  D->NumParams = NumParams;
+  D->Params = new TemplateParameterList*[NumParams];
+  for (unsigned i = 0; i != NumParams; ++i)
+    D->Params[i] = Reader.ReadTemplateParameterList(Record, Idx);
+  if (Record[Idx++]) // HasFriendDecl
+    D->Friend = cast<NamedDecl>(Reader.GetDecl(Record[Idx++]));
+  else
+    D->Friend = Reader.GetTypeSourceInfo(Cursor, Record, Idx);
+  D->FriendLoc = Reader.ReadSourceLocation(Record, Idx);
+}
+
+void PCHDeclReader::VisitTemplateDecl(TemplateDecl *D) {
+  VisitNamedDecl(D);
+
+  NamedDecl *TemplatedDecl
+    = cast_or_null<NamedDecl>(Reader.GetDecl(Record[Idx++]));
+  TemplateParameterList* TemplateParams
+      = Reader.ReadTemplateParameterList(Record, Idx); 
+  D->init(TemplatedDecl, TemplateParams);
+}
+
+void PCHDeclReader::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) {
+  VisitTemplateDecl(D);
+
+  D->IdentifierNamespace = Record[Idx++];
+  RedeclarableTemplateDecl *PrevDecl =
+      cast_or_null<RedeclarableTemplateDecl>(Reader.GetDecl(Record[Idx++]));
+  assert((PrevDecl == 0 || PrevDecl->getKind() == D->getKind()) &&
+         "PrevDecl kind mismatch");
+  if (PrevDecl)
+    D->CommonOrPrev = PrevDecl;
+  if (PrevDecl == 0) {
+    if (RedeclarableTemplateDecl *RTD
+          = cast_or_null<RedeclarableTemplateDecl>(Reader.GetDecl(Record[Idx++]))) {
+      assert(RTD->getKind() == D->getKind() &&
+             "InstantiatedFromMemberTemplate kind mismatch");
+      D->setInstantiatedFromMemberTemplateImpl(RTD);
+      if (Record[Idx++])
+        D->setMemberSpecialization();
+    }
+
+    RedeclarableTemplateDecl *LatestDecl = 
+        cast_or_null<RedeclarableTemplateDecl>(Reader.GetDecl(Record[Idx++]));
+  
+    // This decl is a first one and the latest declaration that it points to is
+    // in the same PCH. However, if this actually needs to point to a
+    // redeclaration in another chained PCH, we need to update it by checking
+    // the FirstLatestDeclIDs map which tracks this kind of decls.
+    assert(Reader.GetDecl(ThisDeclID) == D && "Invalid ThisDeclID ?");
+    PCHReader::FirstLatestDeclIDMap::iterator I
+        = Reader.FirstLatestDeclIDs.find(ThisDeclID);
+    if (I != Reader.FirstLatestDeclIDs.end()) {
+      Decl *NewLatest = Reader.GetDecl(I->second);
+      assert((LatestDecl->getLocation().isInvalid() ||
+              NewLatest->getLocation().isInvalid()  ||
+              Reader.SourceMgr.isBeforeInTranslationUnit(
+                                                   LatestDecl->getLocation(),
+                                                   NewLatest->getLocation())) &&
+             "The new latest is supposed to come after the previous latest");
+      LatestDecl = cast<RedeclarableTemplateDecl>(NewLatest);
+    }
+
+    assert(LatestDecl->getKind() == D->getKind() && "Latest kind mismatch");
+    D->getCommonPtr()->Latest = LatestDecl;
+  }
+}
+
+void PCHDeclReader::VisitClassTemplateDecl(ClassTemplateDecl *D) {
+  VisitRedeclarableTemp