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, 1775 insertions, 0 deletions

diff --git a/lib/Serialization/PCHReaderStmt.cpp b/lib/Serialization/PCHReaderStmt.cpp
new file mode 100644
index 0000000000..727dce39d7
--- /dev/null
+++ b/lib/Serialization/PCHReaderStmt.cpp
@@ -0,0 +1,1775 @@
+//===--- PCHReaderStmt.cpp - Stmt/Expr Deserialization ----------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Statement/expression deserialization.  This implements the
+// PCHReader::ReadStmt method.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/Serialization/PCHReader.h"
+#include "clang/AST/DeclCXX.h"
+#include "clang/AST/StmtVisitor.h"
+using namespace clang;
+
+namespace clang {
+
+  class PCHStmtReader : public StmtVisitor<PCHStmtReader> {
+    PCHReader &Reader;
+    llvm::BitstreamCursor &DeclsCursor;
+    const PCHReader::RecordData &Record;
+    unsigned &Idx;
+
+  public:
+    PCHStmtReader(PCHReader &Reader, llvm::BitstreamCursor &Cursor,
+                  const PCHReader::RecordData &Record, unsigned &Idx)
+      : Reader(Reader), DeclsCursor(Cursor), Record(Record), Idx(Idx) { }
+
+    /// \brief The number of record fields required for the Stmt class
+    /// itself.
+    static const unsigned NumStmtFields = 0;
+
+    /// \brief The number of record fields required for the Expr class
+    /// itself.
+    static const unsigned NumExprFields = NumStmtFields + 3;
+    
+    /// \brief Read and initialize a ExplicitTemplateArgumentList structure.
+    void ReadExplicitTemplateArgumentList(ExplicitTemplateArgumentList &ArgList,
+                                          unsigned NumTemplateArgs);
+
+    void VisitStmt(Stmt *S);
+    void VisitNullStmt(NullStmt *S);
+    void VisitCompoundStmt(CompoundStmt *S);
+    void VisitSwitchCase(SwitchCase *S);
+    void VisitCaseStmt(CaseStmt *S);
+    void VisitDefaultStmt(DefaultStmt *S);
+    void VisitLabelStmt(LabelStmt *S);
+    void VisitIfStmt(IfStmt *S);
+    void VisitSwitchStmt(SwitchStmt *S);
+    void VisitWhileStmt(WhileStmt *S);
+    void VisitDoStmt(DoStmt *S);
+    void VisitForStmt(ForStmt *S);
+    void VisitGotoStmt(GotoStmt *S);
+    void VisitIndirectGotoStmt(IndirectGotoStmt *S);
+    void VisitContinueStmt(ContinueStmt *S);
+    void VisitBreakStmt(BreakStmt *S);
+    void VisitReturnStmt(ReturnStmt *S);
+    void VisitDeclStmt(DeclStmt *S);
+    void VisitAsmStmt(AsmStmt *S);
+    void VisitExpr(Expr *E);
+    void VisitPredefinedExpr(PredefinedExpr *E);
+    void VisitDeclRefExpr(DeclRefExpr *E);
+    void VisitIntegerLiteral(IntegerLiteral *E);
+    void VisitFloatingLiteral(FloatingLiteral *E);
+    void VisitImaginaryLiteral(ImaginaryLiteral *E);
+    void VisitStringLiteral(StringLiteral *E);
+    void VisitCharacterLiteral(CharacterLiteral *E);
+    void VisitParenExpr(ParenExpr *E);
+    void VisitParenListExpr(ParenListExpr *E);
+    void VisitUnaryOperator(UnaryOperator *E);
+    void VisitOffsetOfExpr(OffsetOfExpr *E);
+    void VisitSizeOfAlignOfExpr(SizeOfAlignOfExpr *E);
+    void VisitArraySubscriptExpr(ArraySubscriptExpr *E);
+    void VisitCallExpr(CallExpr *E);
+    void VisitMemberExpr(MemberExpr *E);
+    void VisitCastExpr(CastExpr *E);
+    void VisitBinaryOperator(BinaryOperator *E);
+    void VisitCompoundAssignOperator(CompoundAssignOperator *E);
+    void VisitConditionalOperator(ConditionalOperator *E);
+    void VisitImplicitCastExpr(ImplicitCastExpr *E);
+    void VisitExplicitCastExpr(ExplicitCastExpr *E);
+    void VisitCStyleCastExpr(CStyleCastExpr *E);
+    void VisitCompoundLiteralExpr(CompoundLiteralExpr *E);
+    void VisitExtVectorElementExpr(ExtVectorElementExpr *E);
+    void VisitInitListExpr(InitListExpr *E);
+    void VisitDesignatedInitExpr(DesignatedInitExpr *E);
+    void VisitImplicitValueInitExpr(ImplicitValueInitExpr *E);
+    void VisitVAArgExpr(VAArgExpr *E);
+    void VisitAddrLabelExpr(AddrLabelExpr *E);
+    void VisitStmtExpr(StmtExpr *E);
+    void VisitTypesCompatibleExpr(TypesCompatibleExpr *E);
+    void VisitChooseExpr(ChooseExpr *E);
+    void VisitGNUNullExpr(GNUNullExpr *E);
+    void VisitShuffleVectorExpr(ShuffleVectorExpr *E);
+    void VisitBlockExpr(BlockExpr *E);
+    void VisitBlockDeclRefExpr(BlockDeclRefExpr *E);
+    void VisitObjCStringLiteral(ObjCStringLiteral *E);
+    void VisitObjCEncodeExpr(ObjCEncodeExpr *E);
+    void VisitObjCSelectorExpr(ObjCSelectorExpr *E);
+    void VisitObjCProtocolExpr(ObjCProtocolExpr *E);
+    void VisitObjCIvarRefExpr(ObjCIvarRefExpr *E);
+    void VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *E);
+    void VisitObjCImplicitSetterGetterRefExpr(
+                            ObjCImplicitSetterGetterRefExpr *E);
+    void VisitObjCMessageExpr(ObjCMessageExpr *E);
+    void VisitObjCSuperExpr(ObjCSuperExpr *E);
+    void VisitObjCIsaExpr(ObjCIsaExpr *E);
+
+    void VisitObjCForCollectionStmt(ObjCForCollectionStmt *);
+    void VisitObjCAtCatchStmt(ObjCAtCatchStmt *);
+    void VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *);
+    void VisitObjCAtTryStmt(ObjCAtTryStmt *);
+    void VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *);
+    void VisitObjCAtThrowStmt(ObjCAtThrowStmt *);
+
+    // C++ Statements
+    void VisitCXXCatchStmt(CXXCatchStmt *S);
+    void VisitCXXTryStmt(CXXTryStmt *S);
+
+    void VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E);
+    void VisitCXXConstructExpr(CXXConstructExpr *E);
+    void VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *E);
+    void VisitCXXNamedCastExpr(CXXNamedCastExpr *E);
+    void VisitCXXStaticCastExpr(CXXStaticCastExpr *E);
+    void VisitCXXDynamicCastExpr(CXXDynamicCastExpr *E);
+    void VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *E);
+    void VisitCXXConstCastExpr(CXXConstCastExpr *E);
+    void VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *E);
+    void VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *E);
+    void VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *E);
+    void VisitCXXTypeidExpr(CXXTypeidExpr *E);
+    void VisitCXXThisExpr(CXXThisExpr *E);
+    void VisitCXXThrowExpr(CXXThrowExpr *E);
+    void VisitCXXDefaultArgExpr(CXXDefaultArgExpr *E);
+    void VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *E);
+    void VisitCXXBindReferenceExpr(CXXBindReferenceExpr *E);
+    
+    void VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E);
+    void VisitCXXNewExpr(CXXNewExpr *E);
+    void VisitCXXDeleteExpr(CXXDeleteExpr *E);
+    void VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E);
+    
+    void VisitCXXExprWithTemporaries(CXXExprWithTemporaries *E);
+    
+    void VisitCXXDependentScopeMemberExpr(CXXDependentScopeMemberExpr *E);
+    void VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *E);
+    void VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *E);
+
+    void VisitOverloadExpr(OverloadExpr *E);
+    void VisitUnresolvedMemberExpr(UnresolvedMemberExpr *E);
+    void VisitUnresolvedLookupExpr(UnresolvedLookupExpr *E);
+
+    void VisitUnaryTypeTraitExpr(UnaryTypeTraitExpr *E);
+  };
+}
+
+void PCHStmtReader::
+ReadExplicitTemplateArgumentList(ExplicitTemplateArgumentList &ArgList,
+                                 unsigned NumTemplateArgs) {
+  TemplateArgumentListInfo ArgInfo;
+  ArgInfo.setLAngleLoc(Reader.ReadSourceLocation(Record, Idx));
+  ArgInfo.setRAngleLoc(Reader.ReadSourceLocation(Record, Idx));
+  for (unsigned i = 0; i != NumTemplateArgs; ++i)
+    ArgInfo.addArgument(
+        Reader.ReadTemplateArgumentLoc(DeclsCursor, Record, Idx));
+  ArgList.initializeFrom(ArgInfo);
+}
+
+void PCHStmtReader::VisitStmt(Stmt *S) {
+  assert(Idx == NumStmtFields && "Incorrect statement field count");
+}
+
+void PCHStmtReader::VisitNullStmt(NullStmt *S) {
+  VisitStmt(S);
+  S->setSemiLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitCompoundStmt(CompoundStmt *S) {
+  VisitStmt(S);
+  llvm::SmallVector<Stmt *, 16> Stmts;
+  unsigned NumStmts = Record[Idx++];
+  while (NumStmts--)
+    Stmts.push_back(Reader.ReadSubStmt());
+  S->setStmts(*Reader.getContext(), Stmts.data(), Stmts.size());
+  S->setLBracLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  S->setRBracLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitSwitchCase(SwitchCase *S) {
+  VisitStmt(S);
+  Reader.RecordSwitchCaseID(S, Record[Idx++]);
+}
+
+void PCHStmtReader::VisitCaseStmt(CaseStmt *S) {
+  VisitSwitchCase(S);
+  S->setLHS(Reader.ReadSubExpr());
+  S->setRHS(Reader.ReadSubExpr());
+  S->setSubStmt(Reader.ReadSubStmt());
+  S->setCaseLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  S->setEllipsisLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  S->setColonLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitDefaultStmt(DefaultStmt *S) {
+  VisitSwitchCase(S);
+  S->setSubStmt(Reader.ReadSubStmt());
+  S->setDefaultLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  S->setColonLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitLabelStmt(LabelStmt *S) {
+  VisitStmt(S);
+  S->setID(Reader.GetIdentifierInfo(Record, Idx));
+  S->setSubStmt(Reader.ReadSubStmt());
+  S->setIdentLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  Reader.RecordLabelStmt(S, Record[Idx++]);
+}
+
+void PCHStmtReader::VisitIfStmt(IfStmt *S) {
+  VisitStmt(S);
+  S->setConditionVariable(*Reader.getContext(),
+                          cast_or_null<VarDecl>(Reader.GetDecl(Record[Idx++])));
+  S->setCond(Reader.ReadSubExpr());
+  S->setThen(Reader.ReadSubStmt());
+  S->setElse(Reader.ReadSubStmt());
+  S->setIfLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  S->setElseLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitSwitchStmt(SwitchStmt *S) {
+  VisitStmt(S);
+  S->setConditionVariable(*Reader.getContext(),
+                          cast_or_null<VarDecl>(Reader.GetDecl(Record[Idx++])));
+  S->setCond(Reader.ReadSubExpr());
+  S->setBody(Reader.ReadSubStmt());
+  S->setSwitchLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  SwitchCase *PrevSC = 0;
+  for (unsigned N = Record.size(); Idx != N; ++Idx) {
+    SwitchCase *SC = Reader.getSwitchCaseWithID(Record[Idx]);
+    if (PrevSC)
+      PrevSC->setNextSwitchCase(SC);
+    else
+      S->setSwitchCaseList(SC);
+
+    // Retain this SwitchCase, since SwitchStmt::addSwitchCase() would
+    // normally retain it (but we aren't calling addSwitchCase).
+    SC->Retain();
+    PrevSC = SC;
+  }
+}
+
+void PCHStmtReader::VisitWhileStmt(WhileStmt *S) {
+  VisitStmt(S);
+  S->setConditionVariable(*Reader.getContext(),
+                          cast_or_null<VarDecl>(Reader.GetDecl(Record[Idx++])));
+  S->setCond(Reader.ReadSubExpr());
+  S->setBody(Reader.ReadSubStmt());
+  S->setWhileLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitDoStmt(DoStmt *S) {
+  VisitStmt(S);
+  S->setCond(Reader.ReadSubExpr());
+  S->setBody(Reader.ReadSubStmt());
+  S->setDoLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  S->setWhileLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  S->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitForStmt(ForStmt *S) {
+  VisitStmt(S);
+  S->setInit(Reader.ReadSubStmt());
+  S->setCond(Reader.ReadSubExpr());
+  S->setConditionVariable(*Reader.getContext(),
+                          cast_or_null<VarDecl>(Reader.GetDecl(Record[Idx++])));
+  S->setInc(Reader.ReadSubExpr());
+  S->setBody(Reader.ReadSubStmt());
+  S->setForLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  S->setLParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  S->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitGotoStmt(GotoStmt *S) {
+  VisitStmt(S);
+  Reader.SetLabelOf(S, Record[Idx++]);
+  S->setGotoLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  S->setLabelLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitIndirectGotoStmt(IndirectGotoStmt *S) {
+  VisitStmt(S);
+  S->setGotoLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  S->setStarLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  S->setTarget(Reader.ReadSubExpr());
+}
+
+void PCHStmtReader::VisitContinueStmt(ContinueStmt *S) {
+  VisitStmt(S);
+  S->setContinueLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitBreakStmt(BreakStmt *S) {
+  VisitStmt(S);
+  S->setBreakLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitReturnStmt(ReturnStmt *S) {
+  VisitStmt(S);
+  S->setRetValue(Reader.ReadSubExpr());
+  S->setReturnLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  S->setNRVOCandidate(cast_or_null<VarDecl>(Reader.GetDecl(Record[Idx++])));
+}
+
+void PCHStmtReader::VisitDeclStmt(DeclStmt *S) {
+  VisitStmt(S);
+  S->setStartLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  S->setEndLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+
+  if (Idx + 1 == Record.size()) {
+    // Single declaration
+    S->setDeclGroup(DeclGroupRef(Reader.GetDecl(Record[Idx++])));
+  } else {
+    llvm::SmallVector<Decl *, 16> Decls;
+    Decls.reserve(Record.size() - Idx);
+    for (unsigned N = Record.size(); Idx != N; ++Idx)
+      Decls.push_back(Reader.GetDecl(Record[Idx]));
+    S->setDeclGroup(DeclGroupRef(DeclGroup::Create(*Reader.getContext(),
+                                                   Decls.data(),
+                                                   Decls.size())));
+  }
+}
+
+void PCHStmtReader::VisitAsmStmt(AsmStmt *S) {
+  VisitStmt(S);
+  unsigned NumOutputs = Record[Idx++];
+  unsigned NumInputs = Record[Idx++];
+  unsigned NumClobbers = Record[Idx++];
+  S->setAsmLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  S->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  S->setVolatile(Record[Idx++]);
+  S->setSimple(Record[Idx++]);
+  S->setMSAsm(Record[Idx++]);
+
+  S->setAsmString(cast_or_null<StringLiteral>(Reader.ReadSubStmt()));
+
+  // Outputs and inputs
+  llvm::SmallVector<IdentifierInfo *, 16> Names;
+  llvm::SmallVector<StringLiteral*, 16> Constraints;
+  llvm::SmallVector<Stmt*, 16> Exprs;
+  for (unsigned I = 0, N = NumOutputs + NumInputs; I != N; ++I) {
+    Names.push_back(Reader.GetIdentifierInfo(Record, Idx));
+    Constraints.push_back(cast_or_null<StringLiteral>(Reader.ReadSubStmt()));
+    Exprs.push_back(Reader.ReadSubStmt());
+  }
+
+  // Constraints
+  llvm::SmallVector<StringLiteral*, 16> Clobbers;
+  for (unsigned I = 0; I != NumClobbers; ++I)
+    Clobbers.push_back(cast_or_null<StringLiteral>(Reader.ReadSubStmt()));
+
+  S->setOutputsAndInputsAndClobbers(*Reader.getContext(),
+                                    Names.data(), Constraints.data(), 
+                                    Exprs.data(), NumOutputs, NumInputs, 
+                                    Clobbers.data(), NumClobbers);
+}
+
+void PCHStmtReader::VisitExpr(Expr *E) {
+  VisitStmt(E);
+  E->setType(Reader.GetType(Record[Idx++]));
+  E->setTypeDependent(Record[Idx++]);
+  E->setValueDependent(Record[Idx++]);
+  assert(Idx == NumExprFields && "Incorrect expression field count");
+}
+
+void PCHStmtReader::VisitPredefinedExpr(PredefinedExpr *E) {
+  VisitExpr(E);
+  E->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setIdentType((PredefinedExpr::IdentType)Record[Idx++]);
+}
+
+void PCHStmtReader::VisitDeclRefExpr(DeclRefExpr *E) {
+  VisitExpr(E);
+
+  bool HasQualifier = Record[Idx++];
+  unsigned NumTemplateArgs = Record[Idx++];
+  
+  E->DecoratedD.setInt((HasQualifier? DeclRefExpr::HasQualifierFlag : 0) |
+      (NumTemplateArgs ? DeclRefExpr::HasExplicitTemplateArgumentListFlag : 0));
+  
+  if (HasQualifier) {
+    E->getNameQualifier()->NNS = Reader.ReadNestedNameSpecifier(Record, Idx);
+    E->getNameQualifier()->Range = Reader.ReadSourceRange(Record, Idx);
+  }
+
+  if (NumTemplateArgs)
+    ReadExplicitTemplateArgumentList(*E->getExplicitTemplateArgumentList(),
+                                     NumTemplateArgs);
+
+  E->setDecl(cast<ValueDecl>(Reader.GetDecl(Record[Idx++])));
+  // FIXME: read DeclarationNameLoc.
+  E->setLocation(Reader.ReadSourceLocation(Record, Idx));
+}
+
+void PCHStmtReader::VisitIntegerLiteral(IntegerLiteral *E) {
+  VisitExpr(E);
+  E->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setValue(Reader.ReadAPInt(Record, Idx));
+}
+
+void PCHStmtReader::VisitFloatingLiteral(FloatingLiteral *E) {
+  VisitExpr(E);
+  E->setValue(Reader.ReadAPFloat(Record, Idx));
+  E->setExact(Record[Idx++]);
+  E->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitImaginaryLiteral(ImaginaryLiteral *E) {
+  VisitExpr(E);
+  E->setSubExpr(Reader.ReadSubExpr());
+}
+
+void PCHStmtReader::VisitStringLiteral(StringLiteral *E) {
+  VisitExpr(E);
+  unsigned Len = Record[Idx++];
+  assert(Record[Idx] == E->getNumConcatenated() &&
+         "Wrong number of concatenated tokens!");
+  ++Idx;
+  E->setWide(Record[Idx++]);
+
+  // Read string data
+  llvm::SmallString<16> Str(&Record[Idx], &Record[Idx] + Len);
+  E->setString(*Reader.getContext(), Str.str());
+  Idx += Len;
+
+  // Read source locations
+  for (unsigned I = 0, N = E->getNumConcatenated(); I != N; ++I)
+    E->setStrTokenLoc(I, SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitCharacterLiteral(CharacterLiteral *E) {
+  VisitExpr(E);
+  E->setValue(Record[Idx++]);
+  E->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setWide(Record[Idx++]);
+}
+
+void PCHStmtReader::VisitParenExpr(ParenExpr *E) {
+  VisitExpr(E);
+  E->setLParen(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setRParen(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setSubExpr(Reader.ReadSubExpr());
+}
+
+void PCHStmtReader::VisitParenListExpr(ParenListExpr *E) {
+  VisitExpr(E);
+  unsigned NumExprs = Record[Idx++];
+  E->Exprs = new (*Reader.getContext()) Stmt*[NumExprs];
+  for (unsigned i = 0; i != NumExprs; ++i)
+    E->Exprs[i] = Reader.ReadSubStmt();
+  E->NumExprs = NumExprs;
+  E->LParenLoc = Reader.ReadSourceLocation(Record, Idx);
+  E->RParenLoc = Reader.ReadSourceLocation(Record, Idx);
+}
+
+void PCHStmtReader::VisitUnaryOperator(UnaryOperator *E) {
+  VisitExpr(E);
+  E->setSubExpr(Reader.ReadSubExpr());
+  E->setOpcode((UnaryOperator::Opcode)Record[Idx++]);
+  E->setOperatorLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitOffsetOfExpr(OffsetOfExpr *E) {
+  typedef OffsetOfExpr::OffsetOfNode Node;
+  VisitExpr(E);
+  assert(E->getNumComponents() == Record[Idx]);
+  ++Idx;
+  assert(E->getNumExpressions() == Record[Idx]);
+  ++Idx;
+  E->setOperatorLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setTypeSourceInfo(Reader.GetTypeSourceInfo(DeclsCursor, Record, Idx));
+  for (unsigned I = 0, N = E->getNumComponents(); I != N; ++I) {
+    Node::Kind Kind = static_cast<Node::Kind>(Record[Idx++]);
+    SourceLocation Start = SourceLocation::getFromRawEncoding(Record[Idx++]);
+    SourceLocation End = SourceLocation::getFromRawEncoding(Record[Idx++]);
+    switch (Kind) {
+    case Node::Array:
+      E->setComponent(I, Node(Start, Record[Idx++], End));
+      break;
+        
+    case Node::Field:
+      E->setComponent(I, 
+             Node(Start,  
+                  dyn_cast_or_null<FieldDecl>(Reader.GetDecl(Record[Idx++])),
+                  End));
+      break;
+
+    case Node::Identifier:
+      E->setComponent(I, Node(Start, Reader.GetIdentifier(Record[Idx++]), End));
+      break;
+        
+    case Node::Base: {
+      CXXBaseSpecifier *Base = new (*Reader.getContext()) CXXBaseSpecifier();
+      *Base = Reader.ReadCXXBaseSpecifier(DeclsCursor, Record, Idx);
+      E->setComponent(I, Node(Base));
+      break;
+    }
+    }
+  }
+  
+  for (unsigned I = 0, N = E->getNumExpressions(); I != N; ++I)
+    E->setIndexExpr(I, Reader.ReadSubExpr());
+}
+
+void PCHStmtReader::VisitSizeOfAlignOfExpr(SizeOfAlignOfExpr *E) {
+  VisitExpr(E);
+  E->setSizeof(Record[Idx++]);
+  if (Record[Idx] == 0) {
+    E->setArgument(Reader.ReadSubExpr());
+    ++Idx;
+  } else {
+    E->setArgument(Reader.GetTypeSourceInfo(DeclsCursor, Record, Idx));
+  }
+  E->setOperatorLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitArraySubscriptExpr(ArraySubscriptExpr *E) {
+  VisitExpr(E);
+  E->setLHS(Reader.ReadSubExpr());
+  E->setRHS(Reader.ReadSubExpr());
+  E->setRBracketLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitCallExpr(CallExpr *E) {
+  VisitExpr(E);
+  E->setNumArgs(*Reader.getContext(), Record[Idx++]);
+  E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setCallee(Reader.ReadSubExpr());
+  for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
+    E->setArg(I, Reader.ReadSubExpr());
+}
+
+void PCHStmtReader::VisitMemberExpr(MemberExpr *E) {
+  // Don't call VisitExpr, this is fully initialized at creation.
+  assert(E->getStmtClass() == Stmt::MemberExprClass &&
+         "It's a subclass, we must advance Idx!");
+}
+
+void PCHStmtReader::VisitObjCIsaExpr(ObjCIsaExpr *E) {
+  VisitExpr(E);
+  E->setBase(Reader.ReadSubExpr());
+  E->setIsaMemberLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setArrow(Record[Idx++]);
+}
+
+void PCHStmtReader::VisitCastExpr(CastExpr *E) {
+  VisitExpr(E);
+  unsigned NumBaseSpecs = Record[Idx++];
+  assert(NumBaseSpecs == E->path_size());
+  E->setSubExpr(Reader.ReadSubExpr());
+  E->setCastKind((CastExpr::CastKind)Record[Idx++]);
+  CastExpr::path_iterator BaseI = E->path_begin();
+  while (NumBaseSpecs--) {
+    CXXBaseSpecifier *BaseSpec = new (*Reader.getContext()) CXXBaseSpecifier;
+    *BaseSpec = Reader.ReadCXXBaseSpecifier(DeclsCursor, Record, Idx);
+    *BaseI++ = BaseSpec;
+  }
+}
+
+void PCHStmtReader::VisitBinaryOperator(BinaryOperator *E) {
+  VisitExpr(E);
+  E->setLHS(Reader.ReadSubExpr());
+  E->setRHS(Reader.ReadSubExpr());
+  E->setOpcode((BinaryOperator::Opcode)Record[Idx++]);
+  E->setOperatorLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitCompoundAssignOperator(CompoundAssignOperator *E) {
+  VisitBinaryOperator(E);
+  E->setComputationLHSType(Reader.GetType(Record[Idx++]));
+  E->setComputationResultType(Reader.GetType(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitConditionalOperator(ConditionalOperator *E) {
+  VisitExpr(E);
+  E->setCond(Reader.ReadSubExpr());
+  E->setLHS(Reader.ReadSubExpr());
+  E->setRHS(Reader.ReadSubExpr());
+  E->setQuestionLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setColonLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitImplicitCastExpr(ImplicitCastExpr *E) {
+  VisitCastExpr(E);
+  E->setCategory(static_cast<ImplicitCastExpr::ResultCategory>(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitExplicitCastExpr(ExplicitCastExpr *E) {
+  VisitCastExpr(E);
+  E->setTypeInfoAsWritten(Reader.GetTypeSourceInfo(DeclsCursor, Record, Idx));
+}
+
+void PCHStmtReader::VisitCStyleCastExpr(CStyleCastExpr *E) {
+  VisitExplicitCastExpr(E);
+  E->setLParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitCompoundLiteralExpr(CompoundLiteralExpr *E) {
+  VisitExpr(E);
+  E->setLParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setTypeSourceInfo(Reader.GetTypeSourceInfo(DeclsCursor, Record, Idx));
+  E->setInitializer(Reader.ReadSubExpr());
+  E->setFileScope(Record[Idx++]);
+}
+
+void PCHStmtReader::VisitExtVectorElementExpr(ExtVectorElementExpr *E) {
+  VisitExpr(E);
+  E->setBase(Reader.ReadSubExpr());
+  E->setAccessor(Reader.GetIdentifierInfo(Record, Idx));
+  E->setAccessorLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitInitListExpr(InitListExpr *E) {
+  VisitExpr(E);
+  unsigned NumInits = Record[Idx++];
+  E->reserveInits(*Reader.getContext(), NumInits);
+  for (unsigned I = 0; I != NumInits; ++I)
+    E->updateInit(*Reader.getContext(), I, Reader.ReadSubExpr());
+  E->setSyntacticForm(cast_or_null<InitListExpr>(Reader.ReadSubStmt()));
+  E->setLBraceLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setRBraceLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setInitializedFieldInUnion(
+                      cast_or_null<FieldDecl>(Reader.GetDecl(Record[Idx++])));
+  E->sawArrayRangeDesignator(Record[Idx++]);
+}
+
+void PCHStmtReader::VisitDesignatedInitExpr(DesignatedInitExpr *E) {
+  typedef DesignatedInitExpr::Designator Designator;
+
+  VisitExpr(E);
+  unsigned NumSubExprs = Record[Idx++];
+  assert(NumSubExprs == E->getNumSubExprs() && "Wrong number of subexprs");
+  for (unsigned I = 0; I != NumSubExprs; ++I)
+    E->setSubExpr(I, Reader.ReadSubExpr());
+  E->setEqualOrColonLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setGNUSyntax(Record[Idx++]);
+
+  llvm::SmallVector<Designator, 4> Designators;
+  while (Idx < Record.size()) {
+    switch ((pch::DesignatorTypes)Record[Idx++]) {
+    case pch::DESIG_FIELD_DECL: {
+      FieldDecl *Field = cast<FieldDecl>(Reader.GetDecl(Record[Idx++]));
+      SourceLocation DotLoc
+        = SourceLocation::getFromRawEncoding(Record[Idx++]);
+      SourceLocation FieldLoc
+        = SourceLocation::getFromRawEncoding(Record[Idx++]);
+      Designators.push_back(Designator(Field->getIdentifier(), DotLoc,
+                                       FieldLoc));
+      Designators.back().setField(Field);
+      break;
+    }
+
+    case pch::DESIG_FIELD_NAME: {
+      const IdentifierInfo *Name = Reader.GetIdentifierInfo(Record, Idx);
+      SourceLocation DotLoc
+        = SourceLocation::getFromRawEncoding(Record[Idx++]);
+      SourceLocation FieldLoc
+        = SourceLocation::getFromRawEncoding(Record[Idx++]);
+      Designators.push_back(Designator(Name, DotLoc, FieldLoc));
+      break;
+    }
+
+    case pch::DESIG_ARRAY: {
+      unsigned Index = Record[Idx++];
+      SourceLocation LBracketLoc
+        = SourceLocation::getFromRawEncoding(Record[Idx++]);
+      SourceLocation RBracketLoc
+        = SourceLocation::getFromRawEncoding(Record[Idx++]);
+      Designators.push_back(Designator(Index, LBracketLoc, RBracketLoc));
+      break;
+    }
+
+    case pch::DESIG_ARRAY_RANGE: {
+      unsigned Index = Record[Idx++];
+      SourceLocation LBracketLoc
+        = SourceLocation::getFromRawEncoding(Record[Idx++]);
+      SourceLocation EllipsisLoc
+        = SourceLocation::getFromRawEncoding(Record[Idx++]);
+      SourceLocation RBracketLoc
+        = SourceLocation::getFromRawEncoding(Record[Idx++]);
+      Designators.push_back(Designator(Index, LBracketLoc, EllipsisLoc,
+                                       RBracketLoc));
+      break;
+    }
+    }
+  }
+  E->setDesignators(*Reader.getContext(), 
+                    Designators.data(), Designators.size());
+}
+
+void PCHStmtReader::VisitImplicitValueInitExpr(ImplicitValueInitExpr *E) {
+  VisitExpr(E);
+}
+
+void PCHStmtReader::VisitVAArgExpr(VAArgExpr *E) {
+  VisitExpr(E);
+  E->setSubExpr(Reader.ReadSubExpr());
+  E->setWrittenTypeInfo(Reader.GetTypeSourceInfo(DeclsCursor, Record, Idx));
+  E->setBuiltinLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitAddrLabelExpr(AddrLabelExpr *E) {
+  VisitExpr(E);
+  E->setAmpAmpLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setLabelLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  Reader.SetLabelOf(E, Record[Idx++]);
+}
+
+void PCHStmtReader::VisitStmtExpr(StmtExpr *E) {
+  VisitExpr(E);
+  E->setLParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setSubStmt(cast_or_null<CompoundStmt>(Reader.ReadSubStmt()));
+}
+
+void PCHStmtReader::VisitTypesCompatibleExpr(TypesCompatibleExpr *E) {
+  VisitExpr(E);
+  E->setArgTInfo1(Reader.GetTypeSourceInfo(DeclsCursor, Record, Idx));
+  E->setArgTInfo2(Reader.GetTypeSourceInfo(DeclsCursor, Record, Idx));
+  E->setBuiltinLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitChooseExpr(ChooseExpr *E) {
+  VisitExpr(E);
+  E->setCond(Reader.ReadSubExpr());
+  E->setLHS(Reader.ReadSubExpr());
+  E->setRHS(Reader.ReadSubExpr());
+  E->setBuiltinLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitGNUNullExpr(GNUNullExpr *E) {
+  VisitExpr(E);
+  E->setTokenLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitShuffleVectorExpr(ShuffleVectorExpr *E) {
+  VisitExpr(E);
+  llvm::SmallVector<Expr *, 16> Exprs;
+  unsigned NumExprs = Record[Idx++];
+  while (NumExprs--)
+    Exprs.push_back(Reader.ReadSubExpr());
+  E->setExprs(*Reader.getContext(), Exprs.data(), Exprs.size());
+  E->setBuiltinLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitBlockExpr(BlockExpr *E) {
+  VisitExpr(E);
+  E->setBlockDecl(cast_or_null<BlockDecl>(Reader.GetDecl(Record[Idx++])));
+  E->setHasBlockDeclRefExprs(Record[Idx++]);
+}
+
+void PCHStmtReader::VisitBlockDeclRefExpr(BlockDeclRefExpr *E) {
+  VisitExpr(E);
+  E->setDecl(cast<ValueDecl>(Reader.GetDecl(Record[Idx++])));
+  E->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setByRef(Record[Idx++]);
+  E->setConstQualAdded(Record[Idx++]);
+  E->setCopyConstructorExpr(Reader.ReadSubExpr());
+}
+
+//===----------------------------------------------------------------------===//
+// Objective-C Expressions and Statements
+
+void PCHStmtReader::VisitObjCStringLiteral(ObjCStringLiteral *E) {
+  VisitExpr(E);
+  E->setString(cast<StringLiteral>(Reader.ReadSubStmt()));
+  E->setAtLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitObjCEncodeExpr(ObjCEncodeExpr *E) {
+  VisitExpr(E);
+  E->setEncodedTypeSourceInfo(Reader.GetTypeSourceInfo(DeclsCursor,Record,Idx));
+  E->setAtLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitObjCSelectorExpr(ObjCSelectorExpr *E) {
+  VisitExpr(E);
+  E->setSelector(Reader.GetSelector(Record, Idx));
+  E->setAtLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitObjCProtocolExpr(ObjCProtocolExpr *E) {
+  VisitExpr(E);
+  E->setProtocol(cast<ObjCProtocolDecl>(Reader.GetDecl(Record[Idx++])));
+  E->setAtLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitObjCIvarRefExpr(ObjCIvarRefExpr *E) {
+  VisitExpr(E);
+  E->setDecl(cast<ObjCIvarDecl>(Reader.GetDecl(Record[Idx++])));
+  E->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setBase(Reader.ReadSubExpr());
+  E->setIsArrow(Record[Idx++]);
+  E->setIsFreeIvar(Record[Idx++]);
+}
+
+void PCHStmtReader::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *E) {
+  VisitExpr(E);
+  E->setProperty(cast<ObjCPropertyDecl>(Reader.GetDecl(Record[Idx++])));
+  E->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setBase(Reader.ReadSubExpr());
+}
+
+void PCHStmtReader::VisitObjCImplicitSetterGetterRefExpr(
+                                      ObjCImplicitSetterGetterRefExpr *E) {
+  VisitExpr(E);
+  E->setGetterMethod(
+                 cast_or_null<ObjCMethodDecl>(Reader.GetDecl(Record[Idx++])));
+  E->setSetterMethod(
+                 cast_or_null<ObjCMethodDecl>(Reader.GetDecl(Record[Idx++])));
+  E->setInterfaceDecl(
+              cast_or_null<ObjCInterfaceDecl>(Reader.GetDecl(Record[Idx++])));
+  E->setBase(Reader.ReadSubExpr());
+  E->setLocation(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setClassLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitObjCMessageExpr(ObjCMessageExpr *E) {
+  VisitExpr(E);
+  assert(Record[Idx] == E->getNumArgs());
+  ++Idx;
+  ObjCMessageExpr::ReceiverKind Kind
+    = static_cast<ObjCMessageExpr::ReceiverKind>(Record[Idx++]);
+  switch (Kind) {
+  case ObjCMessageExpr::Instance:
+    E->setInstanceReceiver(Reader.ReadSubExpr());
+    break;
+
+  case ObjCMessageExpr::Class:
+    E->setClassReceiver(Reader.GetTypeSourceInfo(DeclsCursor, Record, Idx));
+    break;
+
+  case ObjCMessageExpr::SuperClass:
+  case ObjCMessageExpr::SuperInstance: {
+    QualType T = Reader.GetType(Record[Idx++]);
+    SourceLocation SuperLoc = SourceLocation::getFromRawEncoding(Record[Idx++]);
+    E->setSuper(SuperLoc, T, Kind == ObjCMessageExpr::SuperInstance);
+    break;
+  }
+  }
+
+  assert(Kind == E->getReceiverKind());
+
+  if (Record[Idx++])
+    E->setMethodDecl(cast_or_null<ObjCMethodDecl>(Reader.GetDecl(Record[Idx++])));
+  else
+    E->setSelector(Reader.GetSelector(Record, Idx));
+
+  E->setLeftLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  E->setRightLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+
+  for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
+    E->setArg(I, Reader.ReadSubExpr());
+}
+
+void PCHStmtReader::VisitObjCSuperExpr(ObjCSuperExpr *E) {
+  VisitExpr(E);
+  E->setLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
+  VisitStmt(S);
+  S->setElement(Reader.ReadSubStmt());
+  S->setCollection(Reader.ReadSubExpr());
+  S->setBody(Reader.ReadSubStmt());
+  S->setForLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  S->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitObjCAtCatchStmt(ObjCAtCatchStmt *S) {
+  VisitStmt(S);
+  S->setCatchBody(Reader.ReadSubStmt());
+  S->setCatchParamDecl(cast_or_null<VarDecl>(Reader.GetDecl(Record[Idx++])));
+  S->setAtCatchLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+  S->setRParenLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S) {
+  VisitStmt(S);
+  S->setFinallyBody(Reader.ReadSubStmt());
+  S->setAtFinallyLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitObjCAtTryStmt(ObjCAtTryStmt *S) {
+  VisitStmt(S);
+  assert(Record[Idx] == S->getNumCatchStmts());
+  ++Idx;
+  bool HasFinally = Record[Idx++];
+  S->setTryBody(Reader.ReadSubStmt());
+  for (unsigned I = 0, N = S->getNumCatchStmts(); I != N; ++I)
+    S->setCatchStmt(I, cast_or_null<ObjCAtCatchStmt>(Reader.ReadSubStmt()));
+
+  if (HasFinally)
+    S->setFinallyStmt(Reader.ReadSubStmt());
+  S->setAtTryLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
+  VisitStmt(S);
+  S->setSynchExpr(Reader.ReadSubStmt());
+  S->setSynchBody(Reader.ReadSubStmt());
+  S->setAtSynchronizedLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+void PCHStmtReader::VisitObjCAtThrowStmt(ObjCAtThrowStmt *S) {
+  VisitStmt(S);
+  S->setThrowExpr(Reader.ReadSubStmt());
+  S->setThrowLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
+}
+
+//===----------------------------------------------------------------------===//
+// C++ Expressions and Statements
+//===----------------------------------------------------------------------===//
+
+void PCHStmtReader::VisitCXXCatchStmt(CXXCatchStmt *S) {
+  VisitStmt(S);
+  S->CatchLoc = Reader.ReadSourceLocatio