1 //===--- ASTWriterStmt.cpp - Statement and Expression Serialization -------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 ///
9 /// \file
10 /// Implements serialization for Statements and Expressions.
11 ///
12 //===----------------------------------------------------------------------===//
13 
14 #include "clang/AST/ExprOpenMP.h"
15 #include "clang/Serialization/ASTRecordWriter.h"
16 #include "clang/Sema/DeclSpec.h"
17 #include "clang/AST/ASTContext.h"
18 #include "clang/AST/DeclCXX.h"
19 #include "clang/AST/DeclObjC.h"
20 #include "clang/AST/DeclTemplate.h"
21 #include "clang/AST/StmtVisitor.h"
22 #include "clang/Lex/Token.h"
23 #include "llvm/Bitstream/BitstreamWriter.h"
24 using namespace clang;
25 
26 //===----------------------------------------------------------------------===//
27 // Statement/expression serialization
28 //===----------------------------------------------------------------------===//
29 
30 namespace clang {
31 
32   class ASTStmtWriter : public StmtVisitor<ASTStmtWriter, void> {
33     ASTWriter &Writer;
34     ASTRecordWriter Record;
35 
36     serialization::StmtCode Code;
37     unsigned AbbrevToUse;
38 
39   public:
40     ASTStmtWriter(ASTWriter &Writer, ASTWriter::RecordData &Record)
41         : Writer(Writer), Record(Writer, Record),
42           Code(serialization::STMT_NULL_PTR), AbbrevToUse(0) {}
43 
44     ASTStmtWriter(const ASTStmtWriter&) = delete;
45 
46     uint64_t Emit() {
47       assert(Code != serialization::STMT_NULL_PTR &&
48              "unhandled sub-statement writing AST file");
49       return Record.EmitStmt(Code, AbbrevToUse);
50     }
51 
52     void AddTemplateKWAndArgsInfo(const ASTTemplateKWAndArgsInfo &ArgInfo,
53                                   const TemplateArgumentLoc *Args);
54 
55     void VisitStmt(Stmt *S);
56 #define STMT(Type, Base) \
57     void Visit##Type(Type *);
58 #include "clang/AST/StmtNodes.inc"
59   };
60 }
61 
62 void ASTStmtWriter::AddTemplateKWAndArgsInfo(
63     const ASTTemplateKWAndArgsInfo &ArgInfo, const TemplateArgumentLoc *Args) {
64   Record.AddSourceLocation(ArgInfo.TemplateKWLoc);
65   Record.AddSourceLocation(ArgInfo.LAngleLoc);
66   Record.AddSourceLocation(ArgInfo.RAngleLoc);
67   for (unsigned i = 0; i != ArgInfo.NumTemplateArgs; ++i)
68     Record.AddTemplateArgumentLoc(Args[i]);
69 }
70 
71 void ASTStmtWriter::VisitStmt(Stmt *S) {
72 }
73 
74 void ASTStmtWriter::VisitNullStmt(NullStmt *S) {
75   VisitStmt(S);
76   Record.AddSourceLocation(S->getSemiLoc());
77   Record.push_back(S->NullStmtBits.HasLeadingEmptyMacro);
78   Code = serialization::STMT_NULL;
79 }
80 
81 void ASTStmtWriter::VisitCompoundStmt(CompoundStmt *S) {
82   VisitStmt(S);
83   Record.push_back(S->size());
84   for (auto *CS : S->body())
85     Record.AddStmt(CS);
86   Record.AddSourceLocation(S->getLBracLoc());
87   Record.AddSourceLocation(S->getRBracLoc());
88   Code = serialization::STMT_COMPOUND;
89 }
90 
91 void ASTStmtWriter::VisitSwitchCase(SwitchCase *S) {
92   VisitStmt(S);
93   Record.push_back(Writer.getSwitchCaseID(S));
94   Record.AddSourceLocation(S->getKeywordLoc());
95   Record.AddSourceLocation(S->getColonLoc());
96 }
97 
98 void ASTStmtWriter::VisitCaseStmt(CaseStmt *S) {
99   VisitSwitchCase(S);
100   Record.push_back(S->caseStmtIsGNURange());
101   Record.AddStmt(S->getLHS());
102   Record.AddStmt(S->getSubStmt());
103   if (S->caseStmtIsGNURange()) {
104     Record.AddStmt(S->getRHS());
105     Record.AddSourceLocation(S->getEllipsisLoc());
106   }
107   Code = serialization::STMT_CASE;
108 }
109 
110 void ASTStmtWriter::VisitDefaultStmt(DefaultStmt *S) {
111   VisitSwitchCase(S);
112   Record.AddStmt(S->getSubStmt());
113   Code = serialization::STMT_DEFAULT;
114 }
115 
116 void ASTStmtWriter::VisitLabelStmt(LabelStmt *S) {
117   VisitStmt(S);
118   Record.AddDeclRef(S->getDecl());
119   Record.AddStmt(S->getSubStmt());
120   Record.AddSourceLocation(S->getIdentLoc());
121   Code = serialization::STMT_LABEL;
122 }
123 
124 void ASTStmtWriter::VisitAttributedStmt(AttributedStmt *S) {
125   VisitStmt(S);
126   Record.push_back(S->getAttrs().size());
127   Record.AddAttributes(S->getAttrs());
128   Record.AddStmt(S->getSubStmt());
129   Record.AddSourceLocation(S->getAttrLoc());
130   Code = serialization::STMT_ATTRIBUTED;
131 }
132 
133 void ASTStmtWriter::VisitIfStmt(IfStmt *S) {
134   VisitStmt(S);
135 
136   bool HasElse = S->getElse() != nullptr;
137   bool HasVar = S->getConditionVariableDeclStmt() != nullptr;
138   bool HasInit = S->getInit() != nullptr;
139 
140   Record.push_back(S->isConstexpr());
141   Record.push_back(HasElse);
142   Record.push_back(HasVar);
143   Record.push_back(HasInit);
144 
145   Record.AddStmt(S->getCond());
146   Record.AddStmt(S->getThen());
147   if (HasElse)
148     Record.AddStmt(S->getElse());
149   if (HasVar)
150     Record.AddDeclRef(S->getConditionVariable());
151   if (HasInit)
152     Record.AddStmt(S->getInit());
153 
154   Record.AddSourceLocation(S->getIfLoc());
155   if (HasElse)
156     Record.AddSourceLocation(S->getElseLoc());
157 
158   Code = serialization::STMT_IF;
159 }
160 
161 void ASTStmtWriter::VisitSwitchStmt(SwitchStmt *S) {
162   VisitStmt(S);
163 
164   bool HasInit = S->getInit() != nullptr;
165   bool HasVar = S->getConditionVariableDeclStmt() != nullptr;
166   Record.push_back(HasInit);
167   Record.push_back(HasVar);
168   Record.push_back(S->isAllEnumCasesCovered());
169 
170   Record.AddStmt(S->getCond());
171   Record.AddStmt(S->getBody());
172   if (HasInit)
173     Record.AddStmt(S->getInit());
174   if (HasVar)
175     Record.AddDeclRef(S->getConditionVariable());
176 
177   Record.AddSourceLocation(S->getSwitchLoc());
178 
179   for (SwitchCase *SC = S->getSwitchCaseList(); SC;
180        SC = SC->getNextSwitchCase())
181     Record.push_back(Writer.RecordSwitchCaseID(SC));
182   Code = serialization::STMT_SWITCH;
183 }
184 
185 void ASTStmtWriter::VisitWhileStmt(WhileStmt *S) {
186   VisitStmt(S);
187 
188   bool HasVar = S->getConditionVariableDeclStmt() != nullptr;
189   Record.push_back(HasVar);
190 
191   Record.AddStmt(S->getCond());
192   Record.AddStmt(S->getBody());
193   if (HasVar)
194     Record.AddDeclRef(S->getConditionVariable());
195 
196   Record.AddSourceLocation(S->getWhileLoc());
197   Code = serialization::STMT_WHILE;
198 }
199 
200 void ASTStmtWriter::VisitDoStmt(DoStmt *S) {
201   VisitStmt(S);
202   Record.AddStmt(S->getCond());
203   Record.AddStmt(S->getBody());
204   Record.AddSourceLocation(S->getDoLoc());
205   Record.AddSourceLocation(S->getWhileLoc());
206   Record.AddSourceLocation(S->getRParenLoc());
207   Code = serialization::STMT_DO;
208 }
209 
210 void ASTStmtWriter::VisitForStmt(ForStmt *S) {
211   VisitStmt(S);
212   Record.AddStmt(S->getInit());
213   Record.AddStmt(S->getCond());
214   Record.AddDeclRef(S->getConditionVariable());
215   Record.AddStmt(S->getInc());
216   Record.AddStmt(S->getBody());
217   Record.AddSourceLocation(S->getForLoc());
218   Record.AddSourceLocation(S->getLParenLoc());
219   Record.AddSourceLocation(S->getRParenLoc());
220   Code = serialization::STMT_FOR;
221 }
222 
223 void ASTStmtWriter::VisitGotoStmt(GotoStmt *S) {
224   VisitStmt(S);
225   Record.AddDeclRef(S->getLabel());
226   Record.AddSourceLocation(S->getGotoLoc());
227   Record.AddSourceLocation(S->getLabelLoc());
228   Code = serialization::STMT_GOTO;
229 }
230 
231 void ASTStmtWriter::VisitIndirectGotoStmt(IndirectGotoStmt *S) {
232   VisitStmt(S);
233   Record.AddSourceLocation(S->getGotoLoc());
234   Record.AddSourceLocation(S->getStarLoc());
235   Record.AddStmt(S->getTarget());
236   Code = serialization::STMT_INDIRECT_GOTO;
237 }
238 
239 void ASTStmtWriter::VisitContinueStmt(ContinueStmt *S) {
240   VisitStmt(S);
241   Record.AddSourceLocation(S->getContinueLoc());
242   Code = serialization::STMT_CONTINUE;
243 }
244 
245 void ASTStmtWriter::VisitBreakStmt(BreakStmt *S) {
246   VisitStmt(S);
247   Record.AddSourceLocation(S->getBreakLoc());
248   Code = serialization::STMT_BREAK;
249 }
250 
251 void ASTStmtWriter::VisitReturnStmt(ReturnStmt *S) {
252   VisitStmt(S);
253 
254   bool HasNRVOCandidate = S->getNRVOCandidate() != nullptr;
255   Record.push_back(HasNRVOCandidate);
256 
257   Record.AddStmt(S->getRetValue());
258   if (HasNRVOCandidate)
259     Record.AddDeclRef(S->getNRVOCandidate());
260 
261   Record.AddSourceLocation(S->getReturnLoc());
262   Code = serialization::STMT_RETURN;
263 }
264 
265 void ASTStmtWriter::VisitDeclStmt(DeclStmt *S) {
266   VisitStmt(S);
267   Record.AddSourceLocation(S->getBeginLoc());
268   Record.AddSourceLocation(S->getEndLoc());
269   DeclGroupRef DG = S->getDeclGroup();
270   for (DeclGroupRef::iterator D = DG.begin(), DEnd = DG.end(); D != DEnd; ++D)
271     Record.AddDeclRef(*D);
272   Code = serialization::STMT_DECL;
273 }
274 
275 void ASTStmtWriter::VisitAsmStmt(AsmStmt *S) {
276   VisitStmt(S);
277   Record.push_back(S->getNumOutputs());
278   Record.push_back(S->getNumInputs());
279   Record.push_back(S->getNumClobbers());
280   Record.AddSourceLocation(S->getAsmLoc());
281   Record.push_back(S->isVolatile());
282   Record.push_back(S->isSimple());
283 }
284 
285 void ASTStmtWriter::VisitGCCAsmStmt(GCCAsmStmt *S) {
286   VisitAsmStmt(S);
287   Record.push_back(S->getNumLabels());
288   Record.AddSourceLocation(S->getRParenLoc());
289   Record.AddStmt(S->getAsmString());
290 
291   // Outputs
292   for (unsigned I = 0, N = S->getNumOutputs(); I != N; ++I) {
293     Record.AddIdentifierRef(S->getOutputIdentifier(I));
294     Record.AddStmt(S->getOutputConstraintLiteral(I));
295     Record.AddStmt(S->getOutputExpr(I));
296   }
297 
298   // Inputs
299   for (unsigned I = 0, N = S->getNumInputs(); I != N; ++I) {
300     Record.AddIdentifierRef(S->getInputIdentifier(I));
301     Record.AddStmt(S->getInputConstraintLiteral(I));
302     Record.AddStmt(S->getInputExpr(I));
303   }
304 
305   // Clobbers
306   for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I)
307     Record.AddStmt(S->getClobberStringLiteral(I));
308 
309   // Labels
310   for (auto *E : S->labels()) Record.AddStmt(E);
311 
312   Code = serialization::STMT_GCCASM;
313 }
314 
315 void ASTStmtWriter::VisitMSAsmStmt(MSAsmStmt *S) {
316   VisitAsmStmt(S);
317   Record.AddSourceLocation(S->getLBraceLoc());
318   Record.AddSourceLocation(S->getEndLoc());
319   Record.push_back(S->getNumAsmToks());
320   Record.AddString(S->getAsmString());
321 
322   // Tokens
323   for (unsigned I = 0, N = S->getNumAsmToks(); I != N; ++I) {
324     // FIXME: Move this to ASTRecordWriter?
325     Writer.AddToken(S->getAsmToks()[I], Record.getRecordData());
326   }
327 
328   // Clobbers
329   for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I) {
330     Record.AddString(S->getClobber(I));
331   }
332 
333   // Outputs
334   for (unsigned I = 0, N = S->getNumOutputs(); I != N; ++I) {
335     Record.AddStmt(S->getOutputExpr(I));
336     Record.AddString(S->getOutputConstraint(I));
337   }
338 
339   // Inputs
340   for (unsigned I = 0, N = S->getNumInputs(); I != N; ++I) {
341     Record.AddStmt(S->getInputExpr(I));
342     Record.AddString(S->getInputConstraint(I));
343   }
344 
345   Code = serialization::STMT_MSASM;
346 }
347 
348 void ASTStmtWriter::VisitCoroutineBodyStmt(CoroutineBodyStmt *CoroStmt) {
349   VisitStmt(CoroStmt);
350   Record.push_back(CoroStmt->getParamMoves().size());
351   for (Stmt *S : CoroStmt->children())
352     Record.AddStmt(S);
353   Code = serialization::STMT_COROUTINE_BODY;
354 }
355 
356 void ASTStmtWriter::VisitCoreturnStmt(CoreturnStmt *S) {
357   VisitStmt(S);
358   Record.AddSourceLocation(S->getKeywordLoc());
359   Record.AddStmt(S->getOperand());
360   Record.AddStmt(S->getPromiseCall());
361   Record.push_back(S->isImplicit());
362   Code = serialization::STMT_CORETURN;
363 }
364 
365 void ASTStmtWriter::VisitCoroutineSuspendExpr(CoroutineSuspendExpr *E) {
366   VisitExpr(E);
367   Record.AddSourceLocation(E->getKeywordLoc());
368   for (Stmt *S : E->children())
369     Record.AddStmt(S);
370   Record.AddStmt(E->getOpaqueValue());
371 }
372 
373 void ASTStmtWriter::VisitCoawaitExpr(CoawaitExpr *E) {
374   VisitCoroutineSuspendExpr(E);
375   Record.push_back(E->isImplicit());
376   Code = serialization::EXPR_COAWAIT;
377 }
378 
379 void ASTStmtWriter::VisitCoyieldExpr(CoyieldExpr *E) {
380   VisitCoroutineSuspendExpr(E);
381   Code = serialization::EXPR_COYIELD;
382 }
383 
384 void ASTStmtWriter::VisitDependentCoawaitExpr(DependentCoawaitExpr *E) {
385   VisitExpr(E);
386   Record.AddSourceLocation(E->getKeywordLoc());
387   for (Stmt *S : E->children())
388     Record.AddStmt(S);
389   Code = serialization::EXPR_DEPENDENT_COAWAIT;
390 }
391 
392 static void
393 addConstraintSatisfaction(ASTRecordWriter &Record,
394                           const ASTConstraintSatisfaction &Satisfaction) {
395   Record.push_back(Satisfaction.IsSatisfied);
396   if (!Satisfaction.IsSatisfied) {
397     Record.push_back(Satisfaction.NumRecords);
398     for (const auto &DetailRecord : Satisfaction) {
399       Record.AddStmt(const_cast<Expr *>(DetailRecord.first));
400       auto *E = DetailRecord.second.dyn_cast<Expr *>();
401       Record.push_back(E == nullptr);
402       if (E)
403         Record.AddStmt(E);
404       else {
405         auto *Diag = DetailRecord.second.get<std::pair<SourceLocation,
406                                                        StringRef> *>();
407         Record.AddSourceLocation(Diag->first);
408         Record.AddString(Diag->second);
409       }
410     }
411   }
412 }
413 
414 static void
415 addSubstitutionDiagnostic(
416     ASTRecordWriter &Record,
417     const concepts::Requirement::SubstitutionDiagnostic *D) {
418   Record.AddString(D->SubstitutedEntity);
419   Record.AddSourceLocation(D->DiagLoc);
420   Record.AddString(D->DiagMessage);
421 }
422 
423 void ASTStmtWriter::VisitConceptSpecializationExpr(
424         ConceptSpecializationExpr *E) {
425   VisitExpr(E);
426   ArrayRef<TemplateArgument> TemplateArgs = E->getTemplateArguments();
427   Record.push_back(TemplateArgs.size());
428   Record.AddNestedNameSpecifierLoc(E->getNestedNameSpecifierLoc());
429   Record.AddSourceLocation(E->getTemplateKWLoc());
430   Record.AddDeclarationNameInfo(E->getConceptNameInfo());
431   Record.AddDeclRef(E->getNamedConcept());
432   Record.AddDeclRef(E->getFoundDecl());
433   Record.AddASTTemplateArgumentListInfo(E->getTemplateArgsAsWritten());
434   for (const TemplateArgument &Arg : TemplateArgs)
435     Record.AddTemplateArgument(Arg);
436   if (!E->isValueDependent())
437     addConstraintSatisfaction(Record, E->getSatisfaction());
438 
439   Code = serialization::EXPR_CONCEPT_SPECIALIZATION;
440 }
441 
442 void ASTStmtWriter::VisitRequiresExpr(RequiresExpr *E) {
443   VisitExpr(E);
444   Record.push_back(E->getLocalParameters().size());
445   Record.push_back(E->getRequirements().size());
446   Record.AddSourceLocation(E->RequiresExprBits.RequiresKWLoc);
447   Record.push_back(E->RequiresExprBits.IsSatisfied);
448   Record.AddDeclRef(E->getBody());
449   for (ParmVarDecl *P : E->getLocalParameters())
450     Record.AddDeclRef(P);
451   for (concepts::Requirement *R : E->getRequirements()) {
452     if (auto *TypeReq = dyn_cast<concepts::TypeRequirement>(R)) {
453       Record.push_back(concepts::Requirement::RK_Type);
454       Record.push_back(TypeReq->Status);
455       if (TypeReq->Status == concepts::TypeRequirement::SS_SubstitutionFailure)
456         addSubstitutionDiagnostic(Record, TypeReq->getSubstitutionDiagnostic());
457       else
458         Record.AddTypeSourceInfo(TypeReq->getType());
459     } else if (auto *ExprReq = dyn_cast<concepts::ExprRequirement>(R)) {
460       Record.push_back(ExprReq->getKind());
461       Record.push_back(ExprReq->Status);
462       if (ExprReq->isExprSubstitutionFailure()) {
463         addSubstitutionDiagnostic(Record,
464          ExprReq->Value.get<concepts::Requirement::SubstitutionDiagnostic *>());
465       } else
466         Record.AddStmt(ExprReq->Value.get<Expr *>());
467       if (ExprReq->getKind() == concepts::Requirement::RK_Compound) {
468         Record.AddSourceLocation(ExprReq->NoexceptLoc);
469         const auto &RetReq = ExprReq->getReturnTypeRequirement();
470         if (RetReq.isSubstitutionFailure()) {
471           Record.push_back(2);
472           addSubstitutionDiagnostic(Record, RetReq.getSubstitutionDiagnostic());
473         } else if (RetReq.isTypeConstraint()) {
474           Record.push_back(1);
475           Record.AddTemplateParameterList(
476               RetReq.getTypeConstraintTemplateParameterList());
477           if (ExprReq->Status >=
478               concepts::ExprRequirement::SS_ConstraintsNotSatisfied)
479             Record.AddStmt(
480                 ExprReq->getReturnTypeRequirementSubstitutedConstraintExpr());
481         } else {
482           assert(RetReq.isEmpty());
483           Record.push_back(0);
484         }
485       }
486     } else {
487       auto *NestedReq = cast<concepts::NestedRequirement>(R);
488       Record.push_back(concepts::Requirement::RK_Nested);
489       Record.push_back(NestedReq->isSubstitutionFailure());
490       if (NestedReq->isSubstitutionFailure()){
491         addSubstitutionDiagnostic(Record,
492                                   NestedReq->getSubstitutionDiagnostic());
493       } else {
494         Record.AddStmt(NestedReq->Value.get<Expr *>());
495         if (!NestedReq->isDependent())
496           addConstraintSatisfaction(Record, *NestedReq->Satisfaction);
497       }
498     }
499   }
500   Record.AddSourceLocation(E->getEndLoc());
501 
502   Code = serialization::EXPR_REQUIRES;
503 }
504 
505 
506 void ASTStmtWriter::VisitCapturedStmt(CapturedStmt *S) {
507   VisitStmt(S);
508   // NumCaptures
509   Record.push_back(std::distance(S->capture_begin(), S->capture_end()));
510 
511   // CapturedDecl and captured region kind
512   Record.AddDeclRef(S->getCapturedDecl());
513   Record.push_back(S->getCapturedRegionKind());
514 
515   Record.AddDeclRef(S->getCapturedRecordDecl());
516 
517   // Capture inits
518   for (auto *I : S->capture_inits())
519     Record.AddStmt(I);
520 
521   // Body
522   Record.AddStmt(S->getCapturedStmt());
523 
524   // Captures
525   for (const auto &I : S->captures()) {
526     if (I.capturesThis() || I.capturesVariableArrayType())
527       Record.AddDeclRef(nullptr);
528     else
529       Record.AddDeclRef(I.getCapturedVar());
530     Record.push_back(I.getCaptureKind());
531     Record.AddSourceLocation(I.getLocation());
532   }
533 
534   Code = serialization::STMT_CAPTURED;
535 }
536 
537 void ASTStmtWriter::VisitExpr(Expr *E) {
538   VisitStmt(E);
539   Record.AddTypeRef(E->getType());
540   Record.push_back(E->isTypeDependent());
541   Record.push_back(E->isValueDependent());
542   Record.push_back(E->isInstantiationDependent());
543   Record.push_back(E->containsUnexpandedParameterPack());
544   Record.push_back(E->containsErrors());
545   Record.push_back(E->getValueKind());
546   Record.push_back(E->getObjectKind());
547 }
548 
549 void ASTStmtWriter::VisitConstantExpr(ConstantExpr *E) {
550   VisitExpr(E);
551   Record.push_back(static_cast<uint64_t>(E->ConstantExprBits.ResultKind));
552   switch (E->ConstantExprBits.ResultKind) {
553   case ConstantExpr::RSK_Int64:
554     Record.push_back(E->Int64Result());
555     Record.push_back(E->ConstantExprBits.IsUnsigned |
556                      E->ConstantExprBits.BitWidth << 1);
557     break;
558   case ConstantExpr::RSK_APValue:
559     Record.AddAPValue(E->APValueResult());
560   }
561   Record.AddStmt(E->getSubExpr());
562   Code = serialization::EXPR_CONSTANT;
563 }
564 
565 void ASTStmtWriter::VisitPredefinedExpr(PredefinedExpr *E) {
566   VisitExpr(E);
567 
568   bool HasFunctionName = E->getFunctionName() != nullptr;
569   Record.push_back(HasFunctionName);
570   Record.push_back(E->getIdentKind()); // FIXME: stable encoding
571   Record.AddSourceLocation(E->getLocation());
572   if (HasFunctionName)
573     Record.AddStmt(E->getFunctionName());
574   Code = serialization::EXPR_PREDEFINED;
575 }
576 
577 void ASTStmtWriter::VisitDeclRefExpr(DeclRefExpr *E) {
578   VisitExpr(E);
579 
580   Record.push_back(E->hasQualifier());
581   Record.push_back(E->getDecl() != E->getFoundDecl());
582   Record.push_back(E->hasTemplateKWAndArgsInfo());
583   Record.push_back(E->hadMultipleCandidates());
584   Record.push_back(E->refersToEnclosingVariableOrCapture());
585   Record.push_back(E->isNonOdrUse());
586 
587   if (E->hasTemplateKWAndArgsInfo()) {
588     unsigned NumTemplateArgs = E->getNumTemplateArgs();
589     Record.push_back(NumTemplateArgs);
590   }
591 
592   DeclarationName::NameKind nk = (E->getDecl()->getDeclName().getNameKind());
593 
594   if ((!E->hasTemplateKWAndArgsInfo()) && (!E->hasQualifier()) &&
595       (E->getDecl() == E->getFoundDecl()) &&
596       nk == DeclarationName::Identifier &&
597       !E->refersToEnclosingVariableOrCapture() && !E->isNonOdrUse()) {
598     AbbrevToUse = Writer.getDeclRefExprAbbrev();
599   }
600 
601   if (E->hasQualifier())
602     Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
603 
604   if (E->getDecl() != E->getFoundDecl())
605     Record.AddDeclRef(E->getFoundDecl());
606 
607   if (E->hasTemplateKWAndArgsInfo())
608     AddTemplateKWAndArgsInfo(*E->getTrailingObjects<ASTTemplateKWAndArgsInfo>(),
609                              E->getTrailingObjects<TemplateArgumentLoc>());
610 
611   Record.AddDeclRef(E->getDecl());
612   Record.AddSourceLocation(E->getLocation());
613   Record.AddDeclarationNameLoc(E->DNLoc, E->getDecl()->getDeclName());
614   Code = serialization::EXPR_DECL_REF;
615 }
616 
617 void ASTStmtWriter::VisitIntegerLiteral(IntegerLiteral *E) {
618   VisitExpr(E);
619   Record.AddSourceLocation(E->getLocation());
620   Record.AddAPInt(E->getValue());
621 
622   if (E->getValue().getBitWidth() == 32) {
623     AbbrevToUse = Writer.getIntegerLiteralAbbrev();
624   }
625 
626   Code = serialization::EXPR_INTEGER_LITERAL;
627 }
628 
629 void ASTStmtWriter::VisitFixedPointLiteral(FixedPointLiteral *E) {
630   VisitExpr(E);
631   Record.AddSourceLocation(E->getLocation());
632   Record.push_back(E->getScale());
633   Record.AddAPInt(E->getValue());
634   Code = serialization::EXPR_FIXEDPOINT_LITERAL;
635 }
636 
637 void ASTStmtWriter::VisitFloatingLiteral(FloatingLiteral *E) {
638   VisitExpr(E);
639   Record.push_back(E->getRawSemantics());
640   Record.push_back(E->isExact());
641   Record.AddAPFloat(E->getValue());
642   Record.AddSourceLocation(E->getLocation());
643   Code = serialization::EXPR_FLOATING_LITERAL;
644 }
645 
646 void ASTStmtWriter::VisitImaginaryLiteral(ImaginaryLiteral *E) {
647   VisitExpr(E);
648   Record.AddStmt(E->getSubExpr());
649   Code = serialization::EXPR_IMAGINARY_LITERAL;
650 }
651 
652 void ASTStmtWriter::VisitStringLiteral(StringLiteral *E) {
653   VisitExpr(E);
654 
655   // Store the various bits of data of StringLiteral.
656   Record.push_back(E->getNumConcatenated());
657   Record.push_back(E->getLength());
658   Record.push_back(E->getCharByteWidth());
659   Record.push_back(E->getKind());
660   Record.push_back(E->isPascal());
661 
662   // Store the trailing array of SourceLocation.
663   for (unsigned I = 0, N = E->getNumConcatenated(); I != N; ++I)
664     Record.AddSourceLocation(E->getStrTokenLoc(I));
665 
666   // Store the trailing array of char holding the string data.
667   StringRef StrData = E->getBytes();
668   for (unsigned I = 0, N = E->getByteLength(); I != N; ++I)
669     Record.push_back(StrData[I]);
670 
671   Code = serialization::EXPR_STRING_LITERAL;
672 }
673 
674 void ASTStmtWriter::VisitCharacterLiteral(CharacterLiteral *E) {
675   VisitExpr(E);
676   Record.push_back(E->getValue());
677   Record.AddSourceLocation(E->getLocation());
678   Record.push_back(E->getKind());
679 
680   AbbrevToUse = Writer.getCharacterLiteralAbbrev();
681 
682   Code = serialization::EXPR_CHARACTER_LITERAL;
683 }
684 
685 void ASTStmtWriter::VisitParenExpr(ParenExpr *E) {
686   VisitExpr(E);
687   Record.AddSourceLocation(E->getLParen());
688   Record.AddSourceLocation(E->getRParen());
689   Record.AddStmt(E->getSubExpr());
690   Code = serialization::EXPR_PAREN;
691 }
692 
693 void ASTStmtWriter::VisitParenListExpr(ParenListExpr *E) {
694   VisitExpr(E);
695   Record.push_back(E->getNumExprs());
696   for (auto *SubStmt : E->exprs())
697     Record.AddStmt(SubStmt);
698   Record.AddSourceLocation(E->getLParenLoc());
699   Record.AddSourceLocation(E->getRParenLoc());
700   Code = serialization::EXPR_PAREN_LIST;
701 }
702 
703 void ASTStmtWriter::VisitUnaryOperator(UnaryOperator *E) {
704   VisitExpr(E);
705   bool HasFPFeatures = E->hasStoredFPFeatures();
706   // Write this first for easy access when deserializing, as they affect the
707   // size of the UnaryOperator.
708   Record.push_back(HasFPFeatures);
709   Record.AddStmt(E->getSubExpr());
710   Record.push_back(E->getOpcode()); // FIXME: stable encoding
711   Record.AddSourceLocation(E->getOperatorLoc());
712   Record.push_back(E->canOverflow());
713   if (HasFPFeatures)
714     Record.push_back(E->getStoredFPFeatures().getAsOpaqueInt());
715   Code = serialization::EXPR_UNARY_OPERATOR;
716 }
717 
718 void ASTStmtWriter::VisitOffsetOfExpr(OffsetOfExpr *E) {
719   VisitExpr(E);
720   Record.push_back(E->getNumComponents());
721   Record.push_back(E->getNumExpressions());
722   Record.AddSourceLocation(E->getOperatorLoc());
723   Record.AddSourceLocation(E->getRParenLoc());
724   Record.AddTypeSourceInfo(E->getTypeSourceInfo());
725   for (unsigned I = 0, N = E->getNumComponents(); I != N; ++I) {
726     const OffsetOfNode &ON = E->getComponent(I);
727     Record.push_back(ON.getKind()); // FIXME: Stable encoding
728     Record.AddSourceLocation(ON.getSourceRange().getBegin());
729     Record.AddSourceLocation(ON.getSourceRange().getEnd());
730     switch (ON.getKind()) {
731     case OffsetOfNode::Array:
732       Record.push_back(ON.getArrayExprIndex());
733       break;
734 
735     case OffsetOfNode::Field:
736       Record.AddDeclRef(ON.getField());
737       break;
738 
739     case OffsetOfNode::Identifier:
740       Record.AddIdentifierRef(ON.getFieldName());
741       break;
742 
743     case OffsetOfNode::Base:
744       Record.AddCXXBaseSpecifier(*ON.getBase());
745       break;
746     }
747   }
748   for (unsigned I = 0, N = E->getNumExpressions(); I != N; ++I)
749     Record.AddStmt(E->getIndexExpr(I));
750   Code = serialization::EXPR_OFFSETOF;
751 }
752 
753 void ASTStmtWriter::VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *E) {
754   VisitExpr(E);
755   Record.push_back(E->getKind());
756   if (E->isArgumentType())
757     Record.AddTypeSourceInfo(E->getArgumentTypeInfo());
758   else {
759     Record.push_back(0);
760     Record.AddStmt(E->getArgumentExpr());
761   }
762   Record.AddSourceLocation(E->getOperatorLoc());
763   Record.AddSourceLocation(E->getRParenLoc());
764   Code = serialization::EXPR_SIZEOF_ALIGN_OF;
765 }
766 
767 void ASTStmtWriter::VisitArraySubscriptExpr(ArraySubscriptExpr *E) {
768   VisitExpr(E);
769   Record.AddStmt(E->getLHS());
770   Record.AddStmt(E->getRHS());
771   Record.AddSourceLocation(E->getRBracketLoc());
772   Code = serialization::EXPR_ARRAY_SUBSCRIPT;
773 }
774 
775 void ASTStmtWriter::VisitOMPArraySectionExpr(OMPArraySectionExpr *E) {
776   VisitExpr(E);
777   Record.AddStmt(E->getBase());
778   Record.AddStmt(E->getLowerBound());
779   Record.AddStmt(E->getLength());
780   Record.AddSourceLocation(E->getColonLoc());
781   Record.AddSourceLocation(E->getRBracketLoc());
782   Code = serialization::EXPR_OMP_ARRAY_SECTION;
783 }
784 
785 void ASTStmtWriter::VisitOMPArrayShapingExpr(OMPArrayShapingExpr *E) {
786   VisitExpr(E);
787   Record.push_back(E->getDimensions().size());
788   Record.AddStmt(E->getBase());
789   for (Expr *Dim : E->getDimensions())
790     Record.AddStmt(Dim);
791   for (SourceRange SR : E->getBracketsRanges())
792     Record.AddSourceRange(SR);
793   Record.AddSourceLocation(E->getLParenLoc());
794   Record.AddSourceLocation(E->getRParenLoc());
795   Code = serialization::EXPR_OMP_ARRAY_SHAPING;
796 }
797 
798 void ASTStmtWriter::VisitOMPIteratorExpr(OMPIteratorExpr *E) {
799   VisitExpr(E);
800   Record.push_back(E->numOfIterators());
801   Record.AddSourceLocation(E->getIteratorKwLoc());
802   Record.AddSourceLocation(E->getLParenLoc());
803   Record.AddSourceLocation(E->getRParenLoc());
804   for (unsigned I = 0, End = E->numOfIterators(); I < End; ++I) {
805     Record.AddDeclRef(E->getIteratorDecl(I));
806     Record.AddSourceLocation(E->getAssignLoc(I));
807     OMPIteratorExpr::IteratorRange Range = E->getIteratorRange(I);
808     Record.AddStmt(Range.Begin);
809     Record.AddStmt(Range.End);
810     Record.AddStmt(Range.Step);
811     Record.AddSourceLocation(E->getColonLoc(I));
812     if (Range.Step)
813       Record.AddSourceLocation(E->getSecondColonLoc(I));
814     // Serialize helpers
815     OMPIteratorHelperData &HD = E->getHelper(I);
816     Record.AddDeclRef(HD.CounterVD);
817     Record.AddStmt(HD.Upper);
818     Record.AddStmt(HD.Update);
819     Record.AddStmt(HD.CounterUpdate);
820   }
821   Code = serialization::EXPR_OMP_ITERATOR;
822 }
823 
824 void ASTStmtWriter::VisitCallExpr(CallExpr *E) {
825   VisitExpr(E);
826   Record.push_back(E->getNumArgs());
827   Record.AddSourceLocation(E->getRParenLoc());
828   Record.AddStmt(E->getCallee());
829   for (CallExpr::arg_iterator Arg = E->arg_begin(), ArgEnd = E->arg_end();
830        Arg != ArgEnd; ++Arg)
831     Record.AddStmt(*Arg);
832   Record.push_back(static_cast<unsigned>(E->getADLCallKind()));
833   Code = serialization::EXPR_CALL;
834 }
835 
836 void ASTStmtWriter::VisitRecoveryExpr(RecoveryExpr *E) {
837   VisitExpr(E);
838   Record.push_back(std::distance(E->children().begin(), E->children().end()));
839   Record.AddSourceLocation(E->getBeginLoc());
840   Record.AddSourceLocation(E->getEndLoc());
841   for (Stmt *Child : E->children())
842     Record.AddStmt(Child);
843   Code = serialization::EXPR_RECOVERY;
844 }
845 
846 void ASTStmtWriter::VisitMemberExpr(MemberExpr *E) {
847   VisitExpr(E);
848 
849   bool HasQualifier = E->hasQualifier();
850   bool HasFoundDecl =
851       E->hasQualifierOrFoundDecl() &&
852       (E->getFoundDecl().getDecl() != E->getMemberDecl() ||
853        E->getFoundDecl().getAccess() != E->getMemberDecl()->getAccess());
854   bool HasTemplateInfo = E->hasTemplateKWAndArgsInfo();
855   unsigned NumTemplateArgs = E->getNumTemplateArgs();
856 
857   // Write these first for easy access when deserializing, as they affect the
858   // size of the MemberExpr.
859   Record.push_back(HasQualifier);
860   Record.push_back(HasFoundDecl);
861   Record.push_back(HasTemplateInfo);
862   Record.push_back(NumTemplateArgs);
863 
864   Record.AddStmt(E->getBase());
865   Record.AddDeclRef(E->getMemberDecl());
866   Record.AddDeclarationNameLoc(E->MemberDNLoc,
867                                E->getMemberDecl()->getDeclName());
868   Record.AddSourceLocation(E->getMemberLoc());
869   Record.push_back(E->isArrow());
870   Record.push_back(E->hadMultipleCandidates());
871   Record.push_back(E->isNonOdrUse());
872   Record.AddSourceLocation(E->getOperatorLoc());
873 
874   if (HasFoundDecl) {
875     DeclAccessPair FoundDecl = E->getFoundDecl();
876     Record.AddDeclRef(FoundDecl.getDecl());
877     Record.push_back(FoundDecl.getAccess());
878   }
879 
880   if (HasQualifier)
881     Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
882 
883   if (HasTemplateInfo)
884     AddTemplateKWAndArgsInfo(*E->getTrailingObjects<ASTTemplateKWAndArgsInfo>(),
885                              E->getTrailingObjects<TemplateArgumentLoc>());
886 
887   Code = serialization::EXPR_MEMBER;
888 }
889 
890 void ASTStmtWriter::VisitObjCIsaExpr(ObjCIsaExpr *E) {
891   VisitExpr(E);
892   Record.AddStmt(E->getBase());
893   Record.AddSourceLocation(E->getIsaMemberLoc());
894   Record.AddSourceLocation(E->getOpLoc());
895   Record.push_back(E->isArrow());
896   Code = serialization::EXPR_OBJC_ISA;
897 }
898 
899 void ASTStmtWriter::
900 VisitObjCIndirectCopyRestoreExpr(ObjCIndirectCopyRestoreExpr *E) {
901   VisitExpr(E);
902   Record.AddStmt(E->getSubExpr());
903   Record.push_back(E->shouldCopy());
904   Code = serialization::EXPR_OBJC_INDIRECT_COPY_RESTORE;
905 }
906 
907 void ASTStmtWriter::VisitObjCBridgedCastExpr(ObjCBridgedCastExpr *E) {
908   VisitExplicitCastExpr(E);
909   Record.AddSourceLocation(E->getLParenLoc());
910   Record.AddSourceLocation(E->getBridgeKeywordLoc());
911   Record.push_back(E->getBridgeKind()); // FIXME: Stable encoding
912   Code = serialization::EXPR_OBJC_BRIDGED_CAST;
913 }
914 
915 void ASTStmtWriter::VisitCastExpr(CastExpr *E) {
916   VisitExpr(E);
917   Record.push_back(E->path_size());
918   Record.AddStmt(E->getSubExpr());
919   Record.push_back(E->getCastKind()); // FIXME: stable encoding
920 
921   for (CastExpr::path_iterator
922          PI = E->path_begin(), PE = E->path_end(); PI != PE; ++PI)
923     Record.AddCXXBaseSpecifier(**PI);
924 }
925 
926 void ASTStmtWriter::VisitBinaryOperator(BinaryOperator *E) {
927   VisitExpr(E);
928   bool HasFPFeatures = E->hasStoredFPFeatures();
929   // Write this first for easy access when deserializing, as they affect the
930   // size of the UnaryOperator.
931   Record.push_back(HasFPFeatures);
932   Record.push_back(E->getOpcode()); // FIXME: stable encoding
933   Record.AddStmt(E->getLHS());
934   Record.AddStmt(E->getRHS());
935   Record.AddSourceLocation(E->getOperatorLoc());
936   if (HasFPFeatures)
937     Record.push_back(E->getStoredFPFeatures().getAsOpaqueInt());
938   Code = serialization::EXPR_BINARY_OPERATOR;
939 }
940 
941 void ASTStmtWriter::VisitCompoundAssignOperator(CompoundAssignOperator *E) {
942   VisitBinaryOperator(E);
943   Record.AddTypeRef(E->getComputationLHSType());
944   Record.AddTypeRef(E->getComputationResultType());
945   Code = serialization::EXPR_COMPOUND_ASSIGN_OPERATOR;
946 }
947 
948 void ASTStmtWriter::VisitConditionalOperator(ConditionalOperator *E) {
949   VisitExpr(E);
950   Record.AddStmt(E->getCond());
951   Record.AddStmt(E->getLHS());
952   Record.AddStmt(E->getRHS());
953   Record.AddSourceLocation(E->getQuestionLoc());
954   Record.AddSourceLocation(E->getColonLoc());
955   Code = serialization::EXPR_CONDITIONAL_OPERATOR;
956 }
957 
958 void
959 ASTStmtWriter::VisitBinaryConditionalOperator(BinaryConditionalOperator *E) {
960   VisitExpr(E);
961   Record.AddStmt(E->getOpaqueValue());
962   Record.AddStmt(E->getCommon());
963   Record.AddStmt(E->getCond());
964   Record.AddStmt(E->getTrueExpr());
965   Record.AddStmt(E->getFalseExpr());
966   Record.AddSourceLocation(E->getQuestionLoc());
967   Record.AddSourceLocation(E->getColonLoc());
968   Code = serialization::EXPR_BINARY_CONDITIONAL_OPERATOR;
969 }
970 
971 void ASTStmtWriter::VisitImplicitCastExpr(ImplicitCastExpr *E) {
972   VisitCastExpr(E);
973   Record.push_back(E->isPartOfExplicitCast());
974 
975   if (E->path_size() == 0)
976     AbbrevToUse = Writer.getExprImplicitCastAbbrev();
977 
978   Code = serialization::EXPR_IMPLICIT_CAST;
979 }
980 
981 void ASTStmtWriter::VisitExplicitCastExpr(ExplicitCastExpr *E) {
982   VisitCastExpr(E);
983   Record.AddTypeSourceInfo(E->getTypeInfoAsWritten());
984 }
985 
986 void ASTStmtWriter::VisitCStyleCastExpr(CStyleCastExpr *E) {
987   VisitExplicitCastExpr(E);
988   Record.AddSourceLocation(E->getLParenLoc());
989   Record.AddSourceLocation(E->getRParenLoc());
990   Code = serialization::EXPR_CSTYLE_CAST;
991 }
992 
993 void ASTStmtWriter::VisitCompoundLiteralExpr(CompoundLiteralExpr *E) {
994   VisitExpr(E);
995   Record.AddSourceLocation(E->getLParenLoc());
996   Record.AddTypeSourceInfo(E->getTypeSourceInfo());
997   Record.AddStmt(E->getInitializer());
998   Record.push_back(E->isFileScope());
999   Code = serialization::EXPR_COMPOUND_LITERAL;
1000 }
1001 
1002 void ASTStmtWriter::VisitExtVectorElementExpr(ExtVectorElementExpr *E) {
1003   VisitExpr(E);
1004   Record.AddStmt(E->getBase());
1005   Record.AddIdentifierRef(&E->getAccessor());
1006   Record.AddSourceLocation(E->getAccessorLoc());
1007   Code = serialization::EXPR_EXT_VECTOR_ELEMENT;
1008 }
1009 
1010 void ASTStmtWriter::VisitInitListExpr(InitListExpr *E) {
1011   VisitExpr(E);
1012   // NOTE: only add the (possibly null) syntactic form.
1013   // No need to serialize the isSemanticForm flag and the semantic form.
1014   Record.AddStmt(E->getSyntacticForm());
1015   Record.AddSourceLocation(E->getLBraceLoc());
1016   Record.AddSourceLocation(E->getRBraceLoc());
1017   bool isArrayFiller = E->ArrayFillerOrUnionFieldInit.is<Expr*>();
1018   Record.push_back(isArrayFiller);
1019   if (isArrayFiller)
1020     Record.AddStmt(E->getArrayFiller());
1021   else
1022     Record.AddDeclRef(E->getInitializedFieldInUnion());
1023   Record.push_back(E->hadArrayRangeDesignator());
1024   Record.push_back(E->getNumInits());
1025   if (isArrayFiller) {
1026     // ArrayFiller may have filled "holes" due to designated initializer.
1027     // Replace them by 0 to indicate that the filler goes in that place.
1028     Expr *filler = E->getArrayFiller();
1029     for (unsigned I = 0, N = E->getNumInits(); I != N; ++I)
1030       Record.AddStmt(E->getInit(I) != filler ? E->getInit(I) : nullptr);
1031   } else {
1032     for (unsigned I = 0, N = E->getNumInits(); I != N; ++I)
1033       Record.AddStmt(E->getInit(I));
1034   }
1035   Code = serialization::EXPR_INIT_LIST;
1036 }
1037 
1038 void ASTStmtWriter::VisitDesignatedInitExpr(DesignatedInitExpr *E) {
1039   VisitExpr(E);
1040   Record.push_back(E->getNumSubExprs());
1041   for (unsigned I = 0, N = E->getNumSubExprs(); I != N; ++I)
1042     Record.AddStmt(E->getSubExpr(I));
1043   Record.AddSourceLocation(E->getEqualOrColonLoc());
1044   Record.push_back(E->usesGNUSyntax());
1045   for (const DesignatedInitExpr::Designator &D : E->designators()) {
1046     if (D.isFieldDesignator()) {
1047       if (FieldDecl *Field = D.getField()) {
1048         Record.push_back(serialization::DESIG_FIELD_DECL);
1049         Record.AddDeclRef(Field);
1050       } else {
1051         Record.push_back(serialization::DESIG_FIELD_NAME);
1052         Record.AddIdentifierRef(D.getFieldName());
1053       }
1054       Record.AddSourceLocation(D.getDotLoc());
1055       Record.AddSourceLocation(D.getFieldLoc());
1056     } else if (D.isArrayDesignator()) {
1057       Record.push_back(serialization::DESIG_ARRAY);
1058       Record.push_back(D.getFirstExprIndex());
1059       Record.AddSourceLocation(D.getLBracketLoc());
1060       Record.AddSourceLocation(D.getRBracketLoc());
1061     } else {
1062       assert(D.isArrayRangeDesignator() && "Unknown designator");
1063       Record.push_back(serialization::DESIG_ARRAY_RANGE);
1064       Record.push_back(D.getFirstExprIndex());
1065       Record.AddSourceLocation(D.getLBracketLoc());
1066       Record.AddSourceLocation(D.getEllipsisLoc());
1067       Record.AddSourceLocation(D.getRBracketLoc());
1068     }
1069   }
1070   Code = serialization::EXPR_DESIGNATED_INIT;
1071 }
1072 
1073 void ASTStmtWriter::VisitDesignatedInitUpdateExpr(DesignatedInitUpdateExpr *E) {
1074   VisitExpr(E);
1075   Record.AddStmt(E->getBase());
1076   Record.AddStmt(E->getUpdater());
1077   Code = serialization::EXPR_DESIGNATED_INIT_UPDATE;
1078 }
1079 
1080 void ASTStmtWriter::VisitNoInitExpr(NoInitExpr *E) {
1081   VisitExpr(E);
1082   Code = serialization::EXPR_NO_INIT;
1083 }
1084 
1085 void ASTStmtWriter::VisitArrayInitLoopExpr(ArrayInitLoopExpr *E) {
1086   VisitExpr(E);
1087   Record.AddStmt(E->SubExprs[0]);
1088   Record.AddStmt(E->SubExprs[1]);
1089   Code = serialization::EXPR_ARRAY_INIT_LOOP;
1090 }
1091 
1092 void ASTStmtWriter::VisitArrayInitIndexExpr(ArrayInitIndexExpr *E) {
1093   VisitExpr(E);
1094   Code = serialization::EXPR_ARRAY_INIT_INDEX;
1095 }
1096 
1097 void ASTStmtWriter::VisitImplicitValueInitExpr(ImplicitValueInitExpr *E) {
1098   VisitExpr(E);
1099   Code = serialization::EXPR_IMPLICIT_VALUE_INIT;
1100 }
1101 
1102 void ASTStmtWriter::VisitVAArgExpr(VAArgExpr *E) {
1103   VisitExpr(E);
1104   Record.AddStmt(E->getSubExpr());
1105   Record.AddTypeSourceInfo(E->getWrittenTypeInfo());
1106   Record.AddSourceLocation(E->getBuiltinLoc());
1107   Record.AddSourceLocation(E->getRParenLoc());
1108   Record.push_back(E->isMicrosoftABI());
1109   Code = serialization::EXPR_VA_ARG;
1110 }
1111 
1112 void ASTStmtWriter::VisitSourceLocExpr(SourceLocExpr *E) {
1113   VisitExpr(E);
1114   Record.AddDeclRef(cast_or_null<Decl>(E->getParentContext()));
1115   Record.AddSourceLocation(E->getBeginLoc());
1116   Record.AddSourceLocation(E->getEndLoc());
1117   Record.push_back(E->getIdentKind());
1118   Code = serialization::EXPR_SOURCE_LOC;
1119 }
1120 
1121 void ASTStmtWriter::VisitAddrLabelExpr(AddrLabelExpr *E) {
1122   VisitExpr(E);
1123   Record.AddSourceLocation(E->getAmpAmpLoc());
1124   Record.AddSourceLocation(E->getLabelLoc());
1125   Record.AddDeclRef(E->getLabel());
1126   Code = serialization::EXPR_ADDR_LABEL;
1127 }
1128 
1129 void ASTStmtWriter::VisitStmtExpr(StmtExpr *E) {
1130   VisitExpr(E);
1131   Record.AddStmt(E->getSubStmt());
1132   Record.AddSourceLocation(E->getLParenLoc());
1133   Record.AddSourceLocation(E->getRParenLoc());
1134   Record.push_back(E->getTemplateDepth());
1135   Code = serialization::EXPR_STMT;
1136 }
1137 
1138 void ASTStmtWriter::VisitChooseExpr(ChooseExpr *E) {
1139   VisitExpr(E);
1140   Record.AddStmt(E->getCond());
1141   Record.AddStmt(E->getLHS());
1142   Record.AddStmt(E->getRHS());
1143   Record.AddSourceLocation(E->getBuiltinLoc());
1144   Record.AddSourceLocation(E->getRParenLoc());
1145   Record.push_back(E->isConditionDependent() ? false : E->isConditionTrue());
1146   Code = serialization::EXPR_CHOOSE;
1147 }
1148 
1149 void ASTStmtWriter::VisitGNUNullExpr(GNUNullExpr *E) {
1150   VisitExpr(E);
1151   Record.AddSourceLocation(E->getTokenLocation());
1152   Code = serialization::EXPR_GNU_NULL;
1153 }
1154 
1155 void ASTStmtWriter::VisitShuffleVectorExpr(ShuffleVectorExpr *E) {
1156   VisitExpr(E);
1157   Record.push_back(E->getNumSubExprs());
1158   for (unsigned I = 0, N = E->getNumSubExprs(); I != N; ++I)
1159     Record.AddStmt(E->getExpr(I));
1160   Record.AddSourceLocation(E->getBuiltinLoc());
1161   Record.AddSourceLocation(E->getRParenLoc());
1162   Code = serialization::EXPR_SHUFFLE_VECTOR;
1163 }
1164 
1165 void ASTStmtWriter::VisitConvertVectorExpr(ConvertVectorExpr *E) {
1166   VisitExpr(E);
1167   Record.AddSourceLocation(E->getBuiltinLoc());
1168   Record.AddSourceLocation(E->getRParenLoc());
1169   Record.AddTypeSourceInfo(E->getTypeSourceInfo());
1170   Record.AddStmt(E->getSrcExpr());
1171   Code = serialization::EXPR_CONVERT_VECTOR;
1172 }
1173 
1174 void ASTStmtWriter::VisitBlockExpr(BlockExpr *E) {
1175   VisitExpr(E);
1176   Record.AddDeclRef(E->getBlockDecl());
1177   Code = serialization::EXPR_BLOCK;
1178 }
1179 
1180 void ASTStmtWriter::VisitGenericSelectionExpr(GenericSelectionExpr *E) {
1181   VisitExpr(E);
1182 
1183   Record.push_back(E->getNumAssocs());
1184   Record.push_back(E->ResultIndex);
1185   Record.AddSourceLocation(E->getGenericLoc());
1186   Record.AddSourceLocation(E->getDefaultLoc());
1187   Record.AddSourceLocation(E->getRParenLoc());
1188 
1189   Stmt **Stmts = E->getTrailingObjects<Stmt *>();
1190   // Add 1 to account for the controlling expression which is the first
1191   // expression in the trailing array of Stmt *. This is not needed for
1192   // the trailing array of TypeSourceInfo *.
1193   for (unsigned I = 0, N = E->getNumAssocs() + 1; I < N; ++I)
1194     Record.AddStmt(Stmts[I]);
1195 
1196   TypeSourceInfo **TSIs = E->getTrailingObjects<TypeSourceInfo *>();
1197   for (unsigned I = 0, N = E->getNumAssocs(); I < N; ++I)
1198     Record.AddTypeSourceInfo(TSIs[I]);
1199 
1200   Code = serialization::EXPR_GENERIC_SELECTION;
1201 }
1202 
1203 void ASTStmtWriter::VisitPseudoObjectExpr(PseudoObjectExpr *E) {
1204   VisitExpr(E);
1205   Record.push_back(E->getNumSemanticExprs());
1206 
1207   // Push the result index.  Currently, this needs to exactly match
1208   // the encoding used internally for ResultIndex.
1209   unsigned result = E->getResultExprIndex();
1210   result = (result == PseudoObjectExpr::NoResult ? 0 : result + 1);
1211   Record.push_back(result);
1212 
1213   Record.AddStmt(E->getSyntacticForm());
1214   for (PseudoObjectExpr::semantics_iterator
1215          i = E->semantics_begin(), e = E->semantics_end(); i != e; ++i) {
1216     Record.AddStmt(*i);
1217   }
1218   Code = serialization::EXPR_PSEUDO_OBJECT;
1219 }
1220 
1221 void ASTStmtWriter::VisitAtomicExpr(AtomicExpr *E) {
1222   VisitExpr(E);
1223   Record.push_back(E->getOp());
1224   for (unsigned I = 0, N = E->getNumSubExprs(); I != N; ++I)
1225     Record.AddStmt(E->getSubExprs()[I]);
1226   Record.AddSourceLocation(E->getBuiltinLoc());
1227   Record.AddSourceLocation(E->getRParenLoc());
1228   Code = serialization::EXPR_ATOMIC;
1229 }
1230 
1231 //===----------------------------------------------------------------------===//
1232 // Objective-C Expressions and Statements.
1233 //===----------------------------------------------------------------------===//
1234 
1235 void ASTStmtWriter::VisitObjCStringLiteral(ObjCStringLiteral *E) {
1236   VisitExpr(E);
1237   Record.AddStmt(E->getString());
1238   Record.AddSourceLocation(E->getAtLoc());
1239   Code = serialization::EXPR_OBJC_STRING_LITERAL;
1240 }
1241 
1242 void ASTStmtWriter::VisitObjCBoxedExpr(ObjCBoxedExpr *E) {
1243   VisitExpr(E);
1244   Record.AddStmt(E->getSubExpr());
1245   Record.AddDeclRef(E->getBoxingMethod());
1246   Record.AddSourceRange(E->getSourceRange());
1247   Code = serialization::EXPR_OBJC_BOXED_EXPRESSION;
1248 }
1249 
1250 void ASTStmtWriter::VisitObjCArrayLiteral(ObjCArrayLiteral *E) {
1251   VisitExpr(E);
1252   Record.push_back(E->getNumElements());
1253   for (unsigned i = 0; i < E->getNumElements(); i++)
1254     Record.AddStmt(E->getElement(i));
1255   Record.AddDeclRef(E->getArrayWithObjectsMethod());
1256   Record.AddSourceRange(E->getSourceRange());
1257   Code = serialization::EXPR_OBJC_ARRAY_LITERAL;
1258 }
1259 
1260 void ASTStmtWriter::VisitObjCDictionaryLiteral(ObjCDictionaryLiteral *E) {
1261   VisitExpr(E);
1262   Record.push_back(E->getNumElements());
1263   Record.push_back(E->HasPackExpansions);
1264   for (unsigned i = 0; i < E->getNumElements(); i++) {
1265     ObjCDictionaryElement Element = E->getKeyValueElement(i);
1266     Record.AddStmt(Element.Key);
1267     Record.AddStmt(Element.Value);
1268     if (E->HasPackExpansions) {
1269       Record.AddSourceLocation(Element.EllipsisLoc);
1270       unsigned NumExpansions = 0;
1271       if (Element.NumExpansions)
1272         NumExpansions = *Element.NumExpansions + 1;
1273       Record.push_back(NumExpansions);
1274     }
1275   }
1276 
1277   Record.AddDeclRef(E->getDictWithObjectsMethod());
1278   Record.AddSourceRange(E->getSourceRange());
1279   Code = serialization::EXPR_OBJC_DICTIONARY_LITERAL;
1280 }
1281 
1282 void ASTStmtWriter::VisitObjCEncodeExpr(ObjCEncodeExpr *E) {
1283   VisitExpr(E);
1284   Record.AddTypeSourceInfo(E->getEncodedTypeSourceInfo());
1285   Record.AddSourceLocation(E->getAtLoc());
1286   Record.AddSourceLocation(E->getRParenLoc());
1287   Code = serialization::EXPR_OBJC_ENCODE;
1288 }
1289 
1290 void ASTStmtWriter::VisitObjCSelectorExpr(ObjCSelectorExpr *E) {
1291   VisitExpr(E);
1292   Record.AddSelectorRef(E->getSelector());
1293   Record.AddSourceLocation(E->getAtLoc());
1294   Record.AddSourceLocation(E->getRParenLoc());
1295   Code = serialization::EXPR_OBJC_SELECTOR_EXPR;
1296 }
1297 
1298 void ASTStmtWriter::VisitObjCProtocolExpr(ObjCProtocolExpr *E) {
1299   VisitExpr(E);
1300   Record.AddDeclRef(E->getProtocol());
1301   Record.AddSourceLocation(E->getAtLoc());
1302   Record.AddSourceLocation(E->ProtoLoc);
1303   Record.AddSourceLocation(E->getRParenLoc());
1304   Code = serialization::EXPR_OBJC_PROTOCOL_EXPR;
1305 }
1306 
1307 void ASTStmtWriter::VisitObjCIvarRefExpr(ObjCIvarRefExpr *E) {
1308   VisitExpr(E);
1309   Record.AddDeclRef(E->getDecl());
1310   Record.AddSourceLocation(E->getLocation());
1311   Record.AddSourceLocation(E->getOpLoc());
1312   Record.AddStmt(E->getBase());
1313   Record.push_back(E->isArrow());
1314   Record.push_back(E->isFreeIvar());
1315   Code = serialization::EXPR_OBJC_IVAR_REF_EXPR;
1316 }
1317 
1318 void ASTStmtWriter::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *E) {
1319   VisitExpr(E);
1320   Record.push_back(E->SetterAndMethodRefFlags.getInt());
1321   Record.push_back(E->isImplicitProperty());
1322   if (E->isImplicitProperty()) {
1323     Record.AddDeclRef(E->getImplicitPropertyGetter());
1324     Record.AddDeclRef(E->getImplicitPropertySetter());
1325   } else {
1326     Record.AddDeclRef(E->getExplicitProperty());
1327   }
1328   Record.AddSourceLocation(E->getLocation());
1329   Record.AddSourceLocation(E->getReceiverLocation());
1330   if (E->isObjectReceiver()) {
1331     Record.push_back(0);
1332     Record.AddStmt(E->getBase());
1333   } else if (E->isSuperReceiver()) {
1334     Record.push_back(1);
1335     Record.AddTypeRef(E->getSuperReceiverType());
1336   } else {
1337     Record.push_back(2);
1338     Record.AddDeclRef(E->getClassReceiver());
1339   }
1340 
1341   Code = serialization::EXPR_OBJC_PROPERTY_REF_EXPR;
1342 }
1343 
1344 void ASTStmtWriter::VisitObjCSubscriptRefExpr(ObjCSubscriptRefExpr *E) {
1345   VisitExpr(E);
1346   Record.AddSourceLocation(E->getRBracket());
1347   Record.AddStmt(E->getBaseExpr());
1348   Record.AddStmt(E->getKeyExpr());
1349   Record.AddDeclRef(E->getAtIndexMethodDecl());
1350   Record.AddDeclRef(E->setAtIndexMethodDecl());
1351 
1352   Code = serialization::EXPR_OBJC_SUBSCRIPT_REF_EXPR;
1353 }
1354 
1355 void ASTStmtWriter::VisitObjCMessageExpr(ObjCMessageExpr *E) {
1356   VisitExpr(E);
1357   Record.push_back(E->getNumArgs());
1358   Record.push_back(E->getNumStoredSelLocs());
1359   Record.push_back(E->SelLocsKind);
1360   Record.push_back(E->isDelegateInitCall());
1361   Record.push_back(E->IsImplicit);
1362   Record.push_back((unsigned)E->getReceiverKind()); // FIXME: stable encoding
1363   switch (E->getReceiverKind()) {
1364   case ObjCMessageExpr::Instance:
1365     Record.AddStmt(E->getInstanceReceiver());
1366     break;
1367 
1368   case ObjCMessageExpr::Class:
1369     Record.AddTypeSourceInfo(E->getClassReceiverTypeInfo());
1370     break;
1371 
1372   case ObjCMessageExpr::SuperClass:
1373   case ObjCMessageExpr::SuperInstance:
1374     Record.AddTypeRef(E->getSuperType());
1375     Record.AddSourceLocation(E->getSuperLoc());
1376     break;
1377   }
1378 
1379   if (E->getMethodDecl()) {
1380     Record.push_back(1);
1381     Record.AddDeclRef(E->getMethodDecl());
1382   } else {
1383     Record.push_back(0);
1384     Record.AddSelectorRef(E->getSelector());
1385   }
1386 
1387   Record.AddSourceLocation(E->getLeftLoc());
1388   Record.AddSourceLocation(E->getRightLoc());
1389 
1390   for (CallExpr::arg_iterator Arg = E->arg_begin(), ArgEnd = E->arg_end();
1391        Arg != ArgEnd; ++Arg)
1392     Record.AddStmt(*Arg);
1393 
1394   SourceLocation *Locs = E->getStoredSelLocs();
1395   for (unsigned i = 0, e = E->getNumStoredSelLocs(); i != e; ++i)
1396     Record.AddSourceLocation(Locs[i]);
1397 
1398   Code = serialization::EXPR_OBJC_MESSAGE_EXPR;
1399 }
1400 
1401 void ASTStmtWriter::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
1402   VisitStmt(S);
1403   Record.AddStmt(S->getElement());
1404   Record.AddStmt(S->getCollection());
1405   Record.AddStmt(S->getBody());
1406   Record.AddSourceLocation(S->getForLoc());
1407   Record.AddSourceLocation(S->getRParenLoc());
1408   Code = serialization::STMT_OBJC_FOR_COLLECTION;
1409 }
1410 
1411 void ASTStmtWriter::VisitObjCAtCatchStmt(ObjCAtCatchStmt *S) {
1412   VisitStmt(S);
1413   Record.AddStmt(S->getCatchBody());
1414   Record.AddDeclRef(S->getCatchParamDecl());
1415   Record.AddSourceLocation(S->getAtCatchLoc());
1416   Record.AddSourceLocation(S->getRParenLoc());
1417   Code = serialization::STMT_OBJC_CATCH;
1418 }
1419 
1420 void ASTStmtWriter::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S) {
1421   VisitStmt(S);
1422   Record.AddStmt(S->getFinallyBody());
1423   Record.AddSourceLocation(S->getAtFinallyLoc());
1424   Code = serialization::STMT_OBJC_FINALLY;
1425 }
1426 
1427 void ASTStmtWriter::VisitObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt *S) {
1428   VisitStmt(S); // FIXME: no test coverage.
1429   Record.AddStmt(S->getSubStmt());
1430   Record.AddSourceLocation(S->getAtLoc());
1431   Code = serialization::STMT_OBJC_AUTORELEASE_POOL;
1432 }
1433 
1434 void ASTStmtWriter::VisitObjCAtTryStmt(ObjCAtTryStmt *S) {
1435   VisitStmt(S);
1436   Record.push_back(S->getNumCatchStmts());
1437   Record.push_back(S->getFinallyStmt() != nullptr);
1438   Record.AddStmt(S->getTryBody());
1439   for (unsigned I = 0, N = S->getNumCatchStmts(); I != N; ++I)
1440     Record.AddStmt(S->getCatchStmt(I));
1441   if (S->getFinallyStmt())
1442     Record.AddStmt(S->getFinallyStmt());
1443   Record.AddSourceLocation(S->getAtTryLoc());
1444   Code = serialization::STMT_OBJC_AT_TRY;
1445 }
1446 
1447 void ASTStmtWriter::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
1448   VisitStmt(S); // FIXME: no test coverage.
1449   Record.AddStmt(S->getSynchExpr());
1450   Record.AddStmt(S->getSynchBody());
1451   Record.AddSourceLocation(S->getAtSynchronizedLoc());
1452   Code = serialization::STMT_OBJC_AT_SYNCHRONIZED;
1453 }
1454 
1455 void ASTStmtWriter::VisitObjCAtThrowStmt(ObjCAtThrowStmt *S) {
1456   VisitStmt(S); // FIXME: no test coverage.
1457   Record.AddStmt(S->getThrowExpr());
1458   Record.AddSourceLocation(S->getThrowLoc());
1459   Code = serialization::STMT_OBJC_AT_THROW;
1460 }
1461 
1462 void ASTStmtWriter::VisitObjCBoolLiteralExpr(ObjCBoolLiteralExpr *E) {
1463   VisitExpr(E);
1464   Record.push_back(E->getValue());
1465   Record.AddSourceLocation(E->getLocation());
1466   Code = serialization::EXPR_OBJC_BOOL_LITERAL;
1467 }
1468 
1469 void ASTStmtWriter::VisitObjCAvailabilityCheckExpr(ObjCAvailabilityCheckExpr *E) {
1470   VisitExpr(E);
1471   Record.AddSourceRange(E->getSourceRange());
1472   Record.AddVersionTuple(E->getVersion());
1473   Code = serialization::EXPR_OBJC_AVAILABILITY_CHECK;
1474 }
1475 
1476 //===----------------------------------------------------------------------===//
1477 // C++ Expressions and Statements.
1478 //===----------------------------------------------------------------------===//
1479 
1480 void ASTStmtWriter::VisitCXXCatchStmt(CXXCatchStmt *S) {
1481   VisitStmt(S);
1482   Record.AddSourceLocation(S->getCatchLoc());
1483   Record.AddDeclRef(S->getExceptionDecl());
1484   Record.AddStmt(S->getHandlerBlock());
1485   Code = serialization::STMT_CXX_CATCH;
1486 }
1487 
1488 void ASTStmtWriter::VisitCXXTryStmt(CXXTryStmt *S) {
1489   VisitStmt(S);
1490   Record.push_back(S->getNumHandlers());
1491   Record.AddSourceLocation(S->getTryLoc());
1492   Record.AddStmt(S->getTryBlock());
1493   for (unsigned i = 0, e = S->getNumHandlers(); i != e; ++i)
1494     Record.AddStmt(S->getHandler(i));
1495   Code = serialization::STMT_CXX_TRY;
1496 }
1497 
1498 void ASTStmtWriter::VisitCXXForRangeStmt(CXXForRangeStmt *S) {
1499   VisitStmt(S);
1500   Record.AddSourceLocation(S->getForLoc());
1501   Record.AddSourceLocation(S->getCoawaitLoc());
1502   Record.AddSourceLocation(S->getColonLoc());
1503   Record.AddSourceLocation(S->getRParenLoc());
1504   Record.AddStmt(S->getInit());
1505   Record.AddStmt(S->getRangeStmt());
1506   Record.AddStmt(S->getBeginStmt());
1507   Record.AddStmt(S->getEndStmt());
1508   Record.AddStmt(S->getCond());
1509   Record.AddStmt(S->getInc());
1510   Record.AddStmt(S->getLoopVarStmt());
1511   Record.AddStmt(S->getBody());
1512   Code = serialization::STMT_CXX_FOR_RANGE;
1513 }
1514 
1515 void ASTStmtWriter::VisitMSDependentExistsStmt(MSDependentExistsStmt *S) {
1516   VisitStmt(S);
1517   Record.AddSourceLocation(S->getKeywordLoc());
1518   Record.push_back(S->isIfExists());
1519   Record.AddNestedNameSpecifierLoc(S->getQualifierLoc());
1520   Record.AddDeclarationNameInfo(S->getNameInfo());
1521   Record.AddStmt(S->getSubStmt());
1522   Code = serialization::STMT_MS_DEPENDENT_EXISTS;
1523 }
1524 
1525 void ASTStmtWriter::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E) {
1526   VisitCallExpr(E);
1527   Record.push_back(E->getOperator());
1528   Record.push_back(E->getFPFeatures().getAsOpaqueInt());
1529   Record.AddSourceRange(E->Range);
1530   Code = serialization::EXPR_CXX_OPERATOR_CALL;
1531 }
1532 
1533 void ASTStmtWriter::VisitCXXMemberCallExpr(CXXMemberCallExpr *E) {
1534   VisitCallExpr(E);
1535   Code = serialization::EXPR_CXX_MEMBER_CALL;
1536 }
1537 
1538 void ASTStmtWriter::VisitCXXRewrittenBinaryOperator(
1539     CXXRewrittenBinaryOperator *E) {
1540   VisitExpr(E);
1541   Record.push_back(E->isReversed());
1542   Record.AddStmt(E->getSemanticForm());
1543   Code = serialization::EXPR_CXX_REWRITTEN_BINARY_OPERATOR;
1544 }
1545 
1546 void ASTStmtWriter::VisitCXXConstructExpr(CXXConstructExpr *E) {
1547   VisitExpr(E);
1548 
1549   Record.push_back(E->getNumArgs());
1550   Record.push_back(E->isElidable());
1551   Record.push_back(E->hadMultipleCandidates());
1552   Record.push_back(E->isListInitialization());
1553   Record.push_back(E->isStdInitListInitialization());
1554   Record.push_back(E->requiresZeroInitialization());
1555   Record.push_back(E->getConstructionKind()); // FIXME: stable encoding
1556   Record.AddSourceLocation(E->getLocation());
1557   Record.AddDeclRef(E->getConstructor());
1558   Record.AddSourceRange(E->getParenOrBraceRange());
1559 
1560   for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
1561     Record.AddStmt(E->getArg(I));
1562 
1563   Code = serialization::EXPR_CXX_CONSTRUCT;
1564 }
1565 
1566 void ASTStmtWriter::VisitCXXInheritedCtorInitExpr(CXXInheritedCtorInitExpr *E) {
1567   VisitExpr(E);
1568   Record.AddDeclRef(E->getConstructor());
1569   Record.AddSourceLocation(E->getLocation());
1570   Record.push_back(E->constructsVBase());
1571   Record.push_back(E->inheritedFromVBase());
1572   Code = serialization::EXPR_CXX_INHERITED_CTOR_INIT;
1573 }
1574 
1575 void ASTStmtWriter::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *E) {
1576   VisitCXXConstructExpr(E);
1577   Record.AddTypeSourceInfo(E->getTypeSourceInfo());
1578   Code = serialization::EXPR_CXX_TEMPORARY_OBJECT;
1579 }
1580 
1581 void ASTStmtWriter::VisitLambdaExpr(LambdaExpr *E) {
1582   VisitExpr(E);
1583   Record.push_back(E->NumCaptures);
1584   Record.AddSourceRange(E->IntroducerRange);
1585   Record.push_back(E->CaptureDefault); // FIXME: stable encoding
1586   Record.AddSourceLocation(E->CaptureDefaultLoc);
1587   Record.push_back(E->ExplicitParams);
1588   Record.push_back(E->ExplicitResultType);
1589   Record.AddSourceLocation(E->ClosingBrace);
1590 
1591   // Add capture initializers.
1592   for (LambdaExpr::capture_init_iterator C = E->capture_init_begin(),
1593                                       CEnd = E->capture_init_end();
1594        C != CEnd; ++C) {
1595     Record.AddStmt(*C);
1596   }
1597 
1598   Code = serialization::EXPR_LAMBDA;
1599 }
1600 
1601 void ASTStmtWriter::VisitCXXStdInitializerListExpr(CXXStdInitializerListExpr *E) {
1602   VisitExpr(E);
1603   Record.AddStmt(E->getSubExpr());
1604   Code = serialization::EXPR_CXX_STD_INITIALIZER_LIST;
1605 }
1606 
1607 void ASTStmtWriter::VisitCXXNamedCastExpr(CXXNamedCastExpr *E) {
1608   VisitExplicitCastExpr(E);
1609   Record.AddSourceRange(SourceRange(E->getOperatorLoc(), E->getRParenLoc()));
1610   Record.AddSourceRange(E->getAngleBrackets());
1611 }
1612 
1613 void ASTStmtWriter::VisitCXXStaticCastExpr(CXXStaticCastExpr *E) {
1614   VisitCXXNamedCastExpr(E);
1615   Code = serialization::EXPR_CXX_STATIC_CAST;
1616 }
1617 
1618 void ASTStmtWriter::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *E) {
1619   VisitCXXNamedCastExpr(E);
1620   Code = serialization::EXPR_CXX_DYNAMIC_CAST;
1621 }
1622 
1623 void ASTStmtWriter::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *E) {
1624   VisitCXXNamedCastExpr(E);
1625   Code = serialization::EXPR_CXX_REINTERPRET_CAST;
1626 }
1627 
1628 void ASTStmtWriter::VisitCXXConstCastExpr(CXXConstCastExpr *E) {
1629   VisitCXXNamedCastExpr(E);
1630   Code = serialization::EXPR_CXX_CONST_CAST;
1631 }
1632 
1633 void ASTStmtWriter::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *E) {
1634   VisitExplicitCastExpr(E);
1635   Record.AddSourceLocation(E->getLParenLoc());
1636   Record.AddSourceLocation(E->getRParenLoc());
1637   Code = serialization::EXPR_CXX_FUNCTIONAL_CAST;
1638 }
1639 
1640 void ASTStmtWriter::VisitBuiltinBitCastExpr(BuiltinBitCastExpr *E) {
1641   VisitExplicitCastExpr(E);
1642   Record.AddSourceLocation(E->getBeginLoc());
1643   Record.AddSourceLocation(E->getEndLoc());
1644 }
1645 
1646 void ASTStmtWriter::VisitUserDefinedLiteral(UserDefinedLiteral *E) {
1647   VisitCallExpr(E);
1648   Record.AddSourceLocation(E->UDSuffixLoc);
1649   Code = serialization::EXPR_USER_DEFINED_LITERAL;
1650 }
1651 
1652 void ASTStmtWriter::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *E) {
1653   VisitExpr(E);
1654   Record.push_back(E->getValue());
1655   Record.AddSourceLocation(E->getLocation());
1656   Code = serialization::EXPR_CXX_BOOL_LITERAL;
1657 }
1658 
1659 void ASTStmtWriter::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *E) {
1660   VisitExpr(E);
1661   Record.AddSourceLocation(E->getLocation());
1662   Code = serialization::EXPR_CXX_NULL_PTR_LITERAL;
1663 }
1664 
1665 void ASTStmtWriter::VisitCXXTypeidExpr(CXXTypeidExpr *E) {
1666   VisitExpr(E);
1667   Record.AddSourceRange(E->getSourceRange());
1668   if (E->isTypeOperand()) {
1669     Record.AddTypeSourceInfo(E->getTypeOperandSourceInfo());
1670     Code = serialization::EXPR_CXX_TYPEID_TYPE;
1671   } else {
1672     Record.AddStmt(E->getExprOperand());
1673     Code = serialization::EXPR_CXX_TYPEID_EXPR;
1674   }
1675 }
1676 
1677 void ASTStmtWriter::VisitCXXThisExpr(CXXThisExpr *E) {
1678   VisitExpr(E);
1679   Record.AddSourceLocation(E->getLocation());
1680   Record.push_back(E->isImplicit());
1681   Code = serialization::EXPR_CXX_THIS;
1682 }
1683 
1684 void ASTStmtWriter::VisitCXXThrowExpr(CXXThrowExpr *E) {
1685   VisitExpr(E);
1686   Record.AddSourceLocation(E->getThrowLoc());
1687   Record.AddStmt(E->getSubExpr());
1688   Record.push_back(E->isThrownVariableInScope());
1689   Code = serialization::EXPR_CXX_THROW;
1690 }
1691 
1692 void ASTStmtWriter::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *E) {
1693   VisitExpr(E);
1694   Record.AddDeclRef(E->getParam());
1695   Record.AddDeclRef(cast_or_null<Decl>(E->getUsedContext()));
1696   Record.AddSourceLocation(E->getUsedLocation());
1697   Code = serialization::EXPR_CXX_DEFAULT_ARG;
1698 }
1699 
1700 void ASTStmtWriter::VisitCXXDefaultInitExpr(CXXDefaultInitExpr *E) {
1701   VisitExpr(E);
1702   Record.AddDeclRef(E->getField());
1703   Record.AddDeclRef(cast_or_null<Decl>(E->getUsedContext()));
1704   Record.AddSourceLocation(E->getExprLoc());
1705   Code = serialization::EXPR_CXX_DEFAULT_INIT;
1706 }
1707 
1708 void ASTStmtWriter::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *E) {
1709   VisitExpr(E);
1710   Record.AddCXXTemporary(E->getTemporary());
1711   Record.AddStmt(E->getSubExpr());
1712   Code = serialization::EXPR_CXX_BIND_TEMPORARY;
1713 }
1714 
1715 void ASTStmtWriter::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E) {
1716   VisitExpr(E);
1717   Record.AddTypeSourceInfo(E->getTypeSourceInfo());
1718   Record.AddSourceLocation(E->getRParenLoc());
1719   Code = serialization::EXPR_CXX_SCALAR_VALUE_INIT;
1720 }
1721 
1722 void ASTStmtWriter::VisitCXXNewExpr(CXXNewExpr *E) {
1723   VisitExpr(E);
1724 
1725   Record.push_back(E->isArray());
1726   Record.push_back(E->hasInitializer());
1727   Record.push_back(E->getNumPlacementArgs());
1728   Record.push_back(E->isParenTypeId());
1729 
1730   Record.push_back(E->isGlobalNew());
1731   Record.push_back(E->passAlignment());
1732   Record.push_back(E->doesUsualArrayDeleteWantSize());
1733   Record.push_back(E->CXXNewExprBits.StoredInitializationStyle);
1734 
1735   Record.AddDeclRef(E->getOperatorNew());
1736   Record.AddDeclRef(E->getOperatorDelete());
1737   Record.AddTypeSourceInfo(E->getAllocatedTypeSourceInfo());
1738   if (E->isParenTypeId())
1739     Record.AddSourceRange(E->getTypeIdParens());
1740   Record.AddSourceRange(E->getSourceRange());
1741   Record.AddSourceRange(E->getDirectInitRange());
1742 
1743   for (CXXNewExpr::arg_iterator I = E->raw_arg_begin(), N = E->raw_arg_end();
1744        I != N; ++I)
1745     Record.AddStmt(*I);
1746 
1747   Code = serialization::EXPR_CXX_NEW;
1748 }
1749 
1750 void ASTStmtWriter::VisitCXXDeleteExpr(CXXDeleteExpr *E) {
1751   VisitExpr(E);
1752   Record.push_back(E->isGlobalDelete());
1753   Record.push_back(E->isArrayForm());
1754   Record.push_back(E->isArrayFormAsWritten());
1755   Record.push_back(E->doesUsualArrayDeleteWantSize());
1756   Record.AddDeclRef(E->getOperatorDelete());
1757   Record.AddStmt(E->getArgument());
1758   Record.AddSourceLocation(E->getBeginLoc());
1759 
1760   Code = serialization::EXPR_CXX_DELETE;
1761 }
1762 
1763 void ASTStmtWriter::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E) {
1764   VisitExpr(E);
1765 
1766   Record.AddStmt(E->getBase());
1767   Record.push_back(E->isArrow());
1768   Record.AddSourceLocation(E->getOperatorLoc());
1769   Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
1770   Record.AddTypeSourceInfo(E->getScopeTypeInfo());
1771   Record.AddSourceLocation(E->getColonColonLoc());
1772   Record.AddSourceLocation(E->getTildeLoc());
1773 
1774   // PseudoDestructorTypeStorage.
1775   Record.AddIdentifierRef(E->getDestroyedTypeIdentifier());
1776   if (E->getDestroyedTypeIdentifier())
1777     Record.AddSourceLocation(E->getDestroyedTypeLoc());
1778   else
1779     Record.AddTypeSourceInfo(E->getDestroyedTypeInfo());
1780 
1781   Code = serialization::EXPR_CXX_PSEUDO_DESTRUCTOR;
1782 }
1783 
1784 void ASTStmtWriter::VisitExprWithCleanups(ExprWithCleanups *E) {
1785   VisitExpr(E);
1786   Record.push_back(E->getNumObjects());
1787   for (auto &Obj : E->getObjects()) {
1788     if (auto *BD = Obj.dyn_cast<BlockDecl *>()) {
1789       Record.push_back(serialization::COK_Block);
1790       Record.AddDeclRef(BD);
1791     } else if (auto *CLE = Obj.dyn_cast<CompoundLiteralExpr *>()) {
1792       Record.push_back(serialization::COK_CompoundLiteral);
1793       Record.AddStmt(CLE);
1794     }
1795   }
1796 
1797   Record.push_back(E->cleanupsHaveSideEffects());
1798   Record.AddStmt(E->getSubExpr());
1799   Code = serialization::EXPR_EXPR_WITH_CLEANUPS;
1800 }
1801 
1802 void ASTStmtWriter::VisitCXXDependentScopeMemberExpr(
1803     CXXDependentScopeMemberExpr *E) {
1804   VisitExpr(E);
1805 
1806   // Don't emit anything here (or if you do you will have to update
1807   // the corresponding deserialization function).
1808 
1809   Record.push_back(E->hasTemplateKWAndArgsInfo());
1810   Record.push_back(E->getNumTemplateArgs());
1811   Record.push_back(E->hasFirstQualifierFoundInScope());
1812 
1813   if (E->hasTemplateKWAndArgsInfo()) {
1814     const ASTTemplateKWAndArgsInfo &ArgInfo =
1815         *E->getTrailingObjects<ASTTemplateKWAndArgsInfo>();
1816     AddTemplateKWAndArgsInfo(ArgInfo,
1817                              E->getTrailingObjects<TemplateArgumentLoc>());
1818   }
1819 
1820   Record.push_back(E->isArrow());
1821   Record.AddSourceLocation(E->getOperatorLoc());
1822   Record.AddTypeRef(E->getBaseType());
1823   Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
1824   if (!E->isImplicitAccess())
1825     Record.AddStmt(E->getBase());
1826   else
1827     Record.AddStmt(nullptr);
1828 
1829   if (E->hasFirstQualifierFoundInScope())
1830     Record.AddDeclRef(E->getFirstQualifierFoundInScope());
1831 
1832   Record.AddDeclarationNameInfo(E->MemberNameInfo);
1833   Code = serialization::EXPR_CXX_DEPENDENT_SCOPE_MEMBER;
1834 }
1835 
1836 void
1837 ASTStmtWriter::VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *E) {
1838   VisitExpr(E);
1839 
1840   // Don't emit anything here, HasTemplateKWAndArgsInfo must be
1841   // emitted first.
1842 
1843   Record.push_back(E->DependentScopeDeclRefExprBits.HasTemplateKWAndArgsInfo);
1844   if (E->DependentScopeDeclRefExprBits.HasTemplateKWAndArgsInfo) {
1845     const ASTTemplateKWAndArgsInfo &ArgInfo =
1846         *E->getTrailingObjects<ASTTemplateKWAndArgsInfo>();
1847     Record.push_back(ArgInfo.NumTemplateArgs);
1848     AddTemplateKWAndArgsInfo(ArgInfo,
1849                              E->getTrailingObjects<TemplateArgumentLoc>());
1850   }
1851 
1852   Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
1853   Record.AddDeclarationNameInfo(E->NameInfo);
1854   Code = serialization::EXPR_CXX_DEPENDENT_SCOPE_DECL_REF;
1855 }
1856 
1857 void
1858 ASTStmtWriter::VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *E) {
1859   VisitExpr(E);
1860   Record.push_back(E->arg_size());
1861   for (CXXUnresolvedConstructExpr::arg_iterator
1862          ArgI = E->arg_begin(), ArgE = E->arg_end(); ArgI != ArgE; ++ArgI)
1863     Record.AddStmt(*ArgI);
1864   Record.AddTypeSourceInfo(E->getTypeSourceInfo());
1865   Record.AddSourceLocation(E->getLParenLoc());
1866   Record.AddSourceLocation(E->getRParenLoc());
1867   Code = serialization::EXPR_CXX_UNRESOLVED_CONSTRUCT;
1868 }
1869 
1870 void ASTStmtWriter::VisitOverloadExpr(OverloadExpr *E) {
1871   VisitExpr(E);
1872 
1873   Record.push_back(E->getNumDecls());
1874   Record.push_back(E->hasTemplateKWAndArgsInfo());
1875   if (E->hasTemplateKWAndArgsInfo()) {
1876     const ASTTemplateKWAndArgsInfo &ArgInfo =
1877         *E->getTrailingASTTemplateKWAndArgsInfo();
1878     Record.push_back(ArgInfo.NumTemplateArgs);
1879     AddTemplateKWAndArgsInfo(ArgInfo, E->getTrailingTemplateArgumentLoc());
1880   }
1881 
1882   for (OverloadExpr::decls_iterator OvI = E->decls_begin(),
1883                                     OvE = E->decls_end();
1884        OvI != OvE; ++OvI) {
1885     Record.AddDeclRef(OvI.getDecl());
1886     Record.push_back(OvI.getAccess());
1887   }
1888 
1889   Record.AddDeclarationNameInfo(E->getNameInfo());
1890   Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
1891 }
1892 
1893 void ASTStmtWriter::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *E) {
1894   VisitOverloadExpr(E);
1895   Record.push_back(E->isArrow());
1896   Record.push_back(E->hasUnresolvedUsing());
1897   Record.AddStmt(!E->isImplicitAccess() ? E->getBase() : nullptr);
1898   Record.AddTypeRef(E->getBaseType());
1899   Record.AddSourceLocation(E->getOperatorLoc());
1900   Code = serialization::EXPR_CXX_UNRESOLVED_MEMBER;
1901 }
1902 
1903 void ASTStmtWriter::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *E) {
1904   VisitOverloadExpr(E);
1905   Record.push_back(E->requiresADL());
1906   Record.push_back(E->isOverloaded());
1907   Record.AddDeclRef(E->getNamingClass());
1908   Code = serialization::EXPR_CXX_UNRESOLVED_LOOKUP;
1909 }
1910 
1911 void ASTStmtWriter::VisitTypeTraitExpr(TypeTraitExpr *E) {
1912   VisitExpr(E);
1913   Record.push_back(E->TypeTraitExprBits.NumArgs);
1914   Record.push_back(E->TypeTraitExprBits.Kind); // FIXME: Stable encoding
1915   Record.push_back(E->TypeTraitExprBits.Value);
1916   Record.AddSourceRange(E->getSourceRange());
1917   for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
1918     Record.AddTypeSourceInfo(E->getArg(I));
1919   Code = serialization::EXPR_TYPE_TRAIT;
1920 }
1921 
1922 void ASTStmtWriter::VisitArrayTypeTraitExpr(ArrayTypeTraitExpr *E) {
1923   VisitExpr(E);
1924   Record.push_back(E->getTrait());
1925   Record.push_back(E->getValue());
1926   Record.AddSourceRange(E->getSourceRange());
1927   Record.AddTypeSourceInfo(E->getQueriedTypeSourceInfo());
1928   Record.AddStmt(E->getDimensionExpression());
1929   Code = serialization::EXPR_ARRAY_TYPE_TRAIT;
1930 }
1931 
1932 void ASTStmtWriter::VisitExpressionTraitExpr(ExpressionTraitExpr *E) {
1933   VisitExpr(E);
1934   Record.push_back(E->getTrait());
1935   Record.push_back(E->getValue());
1936   Record.AddSourceRange(E->getSourceRange());
1937   Record.AddStmt(E->getQueriedExpression());
1938   Code = serialization::EXPR_CXX_EXPRESSION_TRAIT;
1939 }
1940 
1941 void ASTStmtWriter::VisitCXXNoexceptExpr(CXXNoexceptExpr *E) {
1942   VisitExpr(E);
1943   Record.push_back(E->getValue());
1944   Record.AddSourceRange(E->getSourceRange());
1945   Record.AddStmt(E->getOperand());
1946   Code = serialization::EXPR_CXX_NOEXCEPT;
1947 }
1948 
1949 void ASTStmtWriter::VisitPackExpansionExpr(PackExpansionExpr *E) {
1950   VisitExpr(E);
1951   Record.AddSourceLocation(E->getEllipsisLoc());
1952   Record.push_back(E->NumExpansions);
1953   Record.AddStmt(E->getPattern());
1954   Code = serialization::EXPR_PACK_EXPANSION;
1955 }
1956 
1957 void ASTStmtWriter::VisitSizeOfPackExpr(SizeOfPackExpr *E) {
1958   VisitExpr(E);
1959   Record.push_back(E->isPartiallySubstituted() ? E->getPartialArguments().size()
1960                                                : 0);
1961   Record.AddSourceLocation(E->OperatorLoc);
1962   Record.AddSourceLocation(E->PackLoc);
1963   Record.AddSourceLocation(E->RParenLoc);
1964   Record.AddDeclRef(E->Pack);
1965   if (E->isPartiallySubstituted()) {
1966     for (const auto &TA : E->getPartialArguments())
1967       Record.AddTemplateArgument(TA);
1968   } else if (!E->isValueDependent()) {
1969     Record.push_back(E->getPackLength());
1970   }
1971   Code = serialization::EXPR_SIZEOF_PACK;
1972 }
1973 
1974 void ASTStmtWriter::VisitSubstNonTypeTemplateParmExpr(
1975                                               SubstNonTypeTemplateParmExpr *E) {
1976   VisitExpr(E);
1977   Record.AddDeclRef(E->getParameter());
1978   Record.AddSourceLocation(E->getNameLoc());
1979   Record.AddStmt(E->getReplacement());
1980   Code = serialization::EXPR_SUBST_NON_TYPE_TEMPLATE_PARM;
1981 }
1982 
1983 void ASTStmtWriter::VisitSubstNonTypeTemplateParmPackExpr(
1984                                           SubstNonTypeTemplateParmPackExpr *E) {
1985   VisitExpr(E);
1986   Record.AddDeclRef(E->getParameterPack());
1987   Record.AddTemplateArgument(E->getArgumentPack());
1988   Record.AddSourceLocation(E->getParameterPackLocation());
1989   Code = serialization::EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK;
1990 }
1991 
1992 void ASTStmtWriter::VisitFunctionParmPackExpr(FunctionParmPackExpr *E) {
1993   VisitExpr(E);
1994   Record.push_back(E->getNumExpansions());
1995   Record.AddDeclRef(E->getParameterPack());
1996   Record.AddSourceLocation(E->getParameterPackLocation());
1997   for (FunctionParmPackExpr::iterator I = E->begin(), End = E->end();
1998        I != End; ++I)
1999     Record.AddDeclRef(*I);
2000   Code = serialization::EXPR_FUNCTION_PARM_PACK;
2001 }
2002 
2003 void ASTStmtWriter::VisitMaterializeTemporaryExpr(MaterializeTemporaryExpr *E) {
2004   VisitExpr(E);
2005   Record.push_back(static_cast<bool>(E->getLifetimeExtendedTemporaryDecl()));
2006   if (E->getLifetimeExtendedTemporaryDecl())
2007     Record.AddDeclRef(E->getLifetimeExtendedTemporaryDecl());
2008   else
2009     Record.AddStmt(E->getSubExpr());
2010   Code = serialization::EXPR_MATERIALIZE_TEMPORARY;
2011 }
2012 
2013 void ASTStmtWriter::VisitCXXFoldExpr(CXXFoldExpr *E) {
2014   VisitExpr(E);
2015   Record.AddSourceLocation(E->LParenLoc);
2016   Record.AddSourceLocation(E->EllipsisLoc);
2017   Record.AddSourceLocation(E->RParenLoc);
2018   Record.push_back(E->NumExpansions);
2019   Record.AddStmt(E->SubExprs[0]);
2020   Record.AddStmt(E->SubExprs[1]);
2021   Record.push_back(E->Opcode);
2022   Code = serialization::EXPR_CXX_FOLD;
2023 }
2024 
2025 void ASTStmtWriter::VisitOpaqueValueExpr(OpaqueValueExpr *E) {
2026   VisitExpr(E);
2027   Record.AddStmt(E->getSourceExpr());
2028   Record.AddSourceLocation(E->getLocation());
2029   Record.push_back(E->isUnique());
2030   Code = serialization::EXPR_OPAQUE_VALUE;
2031 }
2032 
2033 void ASTStmtWriter::VisitTypoExpr(TypoExpr *E) {
2034   VisitExpr(E);
2035   // TODO: Figure out sane writer behavior for a TypoExpr, if necessary
2036   llvm_unreachable("Cannot write TypoExpr nodes");
2037 }
2038 
2039 //===----------------------------------------------------------------------===//
2040 // CUDA Expressions and Statements.
2041 //===----------------------------------------------------------------------===//
2042 
2043 void ASTStmtWriter::VisitCUDAKernelCallExpr(CUDAKernelCallExpr *E) {
2044   VisitCallExpr(E);
2045   Record.AddStmt(E->getConfig());
2046   Code = serialization::EXPR_CUDA_KERNEL_CALL;
2047 }
2048 
2049 //===----------------------------------------------------------------------===//
2050 // OpenCL Expressions and Statements.
2051 //===----------------------------------------------------------------------===//
2052 void ASTStmtWriter::VisitAsTypeExpr(AsTypeExpr *E) {
2053   VisitExpr(E);
2054   Record.AddSourceLocation(E->getBuiltinLoc());
2055   Record.AddSourceLocation(E->getRParenLoc());
2056   Record.AddStmt(E->getSrcExpr());
2057   Code = serialization::EXPR_ASTYPE;
2058 }
2059 
2060 //===----------------------------------------------------------------------===//
2061 // Microsoft Expressions and Statements.
2062 //===----------------------------------------------------------------------===//
2063 void ASTStmtWriter::VisitMSPropertyRefExpr(MSPropertyRefExpr *E) {
2064   VisitExpr(E);
2065   Record.push_back(E->isArrow());
2066   Record.AddStmt(E->getBaseExpr());
2067   Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
2068   Record.AddSourceLocation(E->getMemberLoc());
2069   Record.AddDeclRef(E->getPropertyDecl());
2070   Code = serialization::EXPR_CXX_PROPERTY_REF_EXPR;
2071 }
2072 
2073 void ASTStmtWriter::VisitMSPropertySubscriptExpr(MSPropertySubscriptExpr *E) {
2074   VisitExpr(E);
2075   Record.AddStmt(E->getBase());
2076   Record.AddStmt(E->getIdx());
2077   Record.AddSourceLocation(E->getRBracketLoc());
2078   Code = serialization::EXPR_CXX_PROPERTY_SUBSCRIPT_EXPR;
2079 }
2080 
2081 void ASTStmtWriter::VisitCXXUuidofExpr(CXXUuidofExpr *E) {
2082   VisitExpr(E);
2083   Record.AddSourceRange(E->getSourceRange());
2084   Record.AddDeclRef(E->getGuidDecl());
2085   if (E->isTypeOperand()) {
2086     Record.AddTypeSourceInfo(E->getTypeOperandSourceInfo());
2087     Code = serialization::EXPR_CXX_UUIDOF_TYPE;
2088   } else {
2089     Record.AddStmt(E->getExprOperand());
2090     Code = serialization::EXPR_CXX_UUIDOF_EXPR;
2091   }
2092 }
2093 
2094 void ASTStmtWriter::VisitSEHExceptStmt(SEHExceptStmt *S) {
2095   VisitStmt(S);
2096   Record.AddSourceLocation(S->getExceptLoc());
2097   Record.AddStmt(S->getFilterExpr());
2098   Record.AddStmt(S->getBlock());
2099   Code = serialization::STMT_SEH_EXCEPT;
2100 }
2101 
2102 void ASTStmtWriter::VisitSEHFinallyStmt(SEHFinallyStmt *S) {
2103   VisitStmt(S);
2104   Record.AddSourceLocation(S->getFinallyLoc());
2105   Record.AddStmt(S->getBlock());
2106   Code = serialization::STMT_SEH_FINALLY;
2107 }
2108 
2109 void ASTStmtWriter::VisitSEHTryStmt(SEHTryStmt *S) {
2110   VisitStmt(S);
2111   Record.push_back(S->getIsCXXTry());
2112   Record.AddSourceLocation(S->getTryLoc());
2113   Record.AddStmt(S->getTryBlock());
2114   Record.AddStmt(S->getHandler());
2115   Code = serialization::STMT_SEH_TRY;
2116 }
2117 
2118 void ASTStmtWriter::VisitSEHLeaveStmt(SEHLeaveStmt *S) {
2119   VisitStmt(S);
2120   Record.AddSourceLocation(S->getLeaveLoc());
2121   Code = serialization::STMT_SEH_LEAVE;
2122 }
2123 
2124 //===----------------------------------------------------------------------===//
2125 // OpenMP Directives.
2126 //===----------------------------------------------------------------------===//
2127 void ASTStmtWriter::VisitOMPExecutableDirective(OMPExecutableDirective *E) {
2128   Record.AddSourceLocation(E->getBeginLoc());
2129   Record.AddSourceLocation(E->getEndLoc());
2130   for (unsigned i = 0; i < E->getNumClauses(); ++i) {
2131     Record.writeOMPClause(E->getClause(i));
2132   }
2133   if (E->hasAssociatedStmt())
2134     Record.AddStmt(E->getAssociatedStmt());
2135 }
2136 
2137 void ASTStmtWriter::VisitOMPLoopDirective(OMPLoopDirective *D) {
2138   VisitStmt(D);
2139   Record.push_back(D->getNumClauses());
2140   Record.push_back(D->getCollapsedNumber());
2141   VisitOMPExecutableDirective(D);
2142   Record.AddStmt(D->getIterationVariable());
2143   Record.AddStmt(D->getLastIteration());
2144   Record.AddStmt(D->getCalcLastIteration());
2145   Record.AddStmt(D->getPreCond());
2146   Record.AddStmt(D->getCond());
2147   Record.AddStmt(D->getInit());
2148   Record.AddStmt(D->getInc());
2149   Record.AddStmt(D->getPreInits());
2150   if (isOpenMPWorksharingDirective(D->getDirectiveKind()) ||
2151       isOpenMPTaskLoopDirective(D->getDirectiveKind()) ||
2152       isOpenMPDistributeDirective(D->getDirectiveKind())) {
2153     Record.AddStmt(D->getIsLastIterVariable());
2154     Record.AddStmt(D->getLowerBoundVariable());
2155     Record.AddStmt(D->getUpperBoundVariable());
2156     Record.AddStmt(D->getStrideVariable());
2157     Record.AddStmt(D->getEnsureUpperBound());
2158     Record.AddStmt(D->getNextLowerBound());
2159     Record.AddStmt(D->getNextUpperBound());
2160     Record.AddStmt(D->getNumIterations());
2161   }
2162   if (isOpenMPLoopBoundSharingDirective(D->getDirectiveKind())) {
2163     Record.AddStmt(D->getPrevLowerBoundVariable());
2164     Record.AddStmt(D->getPrevUpperBoundVariable());
2165     Record.AddStmt(D->getDistInc());
2166     Record.AddStmt(D->getPrevEnsureUpperBound());
2167     Record.AddStmt(D->getCombinedLowerBoundVariable());
2168     Record.AddStmt(D->getCombinedUpperBoundVariable());
2169     Record.AddStmt(D->getCombinedEnsureUpperBound());
2170     Record.AddStmt(D->getCombinedInit());
2171     Record.AddStmt(D->getCombinedCond());
2172     Record.AddStmt(D->getCombinedNextLowerBound());
2173     Record.AddStmt(D->getCombinedNextUpperBound());
2174     Record.AddStmt(D->getCombinedDistCond());
2175     Record.AddStmt(D->getCombinedParForInDistCond());
2176   }
2177   for (auto I : D->counters()) {
2178     Record.AddStmt(I);
2179   }
2180   for (auto I : D->private_counters()) {
2181     Record.AddStmt(I);
2182   }
2183   for (auto I : D->inits()) {
2184     Record.AddStmt(I);
2185   }
2186   for (auto I : D->updates()) {
2187     Record.AddStmt(I);
2188   }
2189   for (auto I : D->finals()) {
2190     Record.AddStmt(I);
2191   }
2192   for (Stmt *S : D->dependent_counters())
2193     Record.AddStmt(S);
2194   for (Stmt *S : D->dependent_inits())
2195     Record.AddStmt(S);
2196   for (Stmt *S : D->finals_conditions())
2197     Record.AddStmt(S);
2198 }
2199 
2200 void ASTStmtWriter::VisitOMPParallelDirective(OMPParallelDirective *D) {
2201   VisitStmt(D);
2202   Record.push_back(D->getNumClauses());
2203   VisitOMPExecutableDirective(D);
2204   Record.AddStmt(D->getTaskReductionRefExpr());
2205   Record.push_back(D->hasCancel() ? 1 : 0);
2206   Code = serialization::STMT_OMP_PARALLEL_DIRECTIVE;
2207 }
2208 
2209 void ASTStmtWriter::VisitOMPSimdDirective(OMPSimdDirective *D) {
2210   VisitOMPLoopDirective(D);
2211   Code = serialization::STMT_OMP_SIMD_DIRECTIVE;
2212 }
2213 
2214 void ASTStmtWriter::VisitOMPForDirective(OMPForDirective *D) {
2215   VisitOMPLoopDirective(D);
2216   Record.AddStmt(D->getTaskReductionRefExpr());
2217   Record.push_back(D->hasCancel() ? 1 : 0);
2218   Code = serialization::STMT_OMP_FOR_DIRECTIVE;
2219 }
2220 
2221 void ASTStmtWriter::VisitOMPForSimdDirective(OMPForSimdDirective *D) {
2222   VisitOMPLoopDirective(D);
2223   Code = serialization::STMT_OMP_FOR_SIMD_DIRECTIVE;
2224 }
2225 
2226 void ASTStmtWriter::VisitOMPSectionsDirective(OMPSectionsDirective *D) {
2227   VisitStmt(D);
2228   Record.push_back(D->getNumClauses());
2229   VisitOMPExecutableDirective(D);
2230   Record.AddStmt(D->getTaskReductionRefExpr());
2231   Record.push_back(D->hasCancel() ? 1 : 0);
2232   Code = serialization::STMT_OMP_SECTIONS_DIRECTIVE;
2233 }
2234 
2235 void ASTStmtWriter::VisitOMPSectionDirective(OMPSectionDirective *D) {
2236   VisitStmt(D);
2237   VisitOMPExecutableDirective(D);
2238   Record.push_back(D->hasCancel() ? 1 : 0);
2239   Code = serialization::STMT_OMP_SECTION_DIRECTIVE;
2240 }
2241 
2242 void ASTStmtWriter::VisitOMPSingleDirective(OMPSingleDirective *D) {
2243   VisitStmt(D);
2244   Record.push_back(D->getNumClauses());
2245   VisitOMPExecutableDirective(D);
2246   Code = serialization::STMT_OMP_SINGLE_DIRECTIVE;
2247 }
2248 
2249 void ASTStmtWriter::VisitOMPMasterDirective(OMPMasterDirective *D) {
2250   VisitStmt(D);
2251   VisitOMPExecutableDirective(D);
2252   Code = serialization::STMT_OMP_MASTER_DIRECTIVE;
2253 }
2254 
2255 void ASTStmtWriter::VisitOMPCriticalDirective(OMPCriticalDirective *D) {
2256   VisitStmt(D);
2257   Record.push_back(D->getNumClauses());
2258   VisitOMPExecutableDirective(D);
2259   Record.AddDeclarationNameInfo(D->getDirectiveName());
2260   Code = serialization::STMT_OMP_CRITICAL_DIRECTIVE;
2261 }
2262 
2263 void ASTStmtWriter::VisitOMPParallelForDirective(OMPParallelForDirective *D) {
2264   VisitOMPLoopDirective(D);
2265   Record.AddStmt(D->getTaskReductionRefExpr());
2266   Record.push_back(D->hasCancel() ? 1 : 0);
2267   Code = serialization::STMT_OMP_PARALLEL_FOR_DIRECTIVE;
2268 }
2269 
2270 void ASTStmtWriter::VisitOMPParallelForSimdDirective(
2271     OMPParallelForSimdDirective *D) {
2272   VisitOMPLoopDirective(D);
2273   Code = serialization::STMT_OMP_PARALLEL_FOR_SIMD_DIRECTIVE;
2274 }
2275 
2276 void ASTStmtWriter::VisitOMPParallelMasterDirective(
2277     OMPParallelMasterDirective *D) {
2278   VisitStmt(D);
2279   Record.push_back(D->getNumClauses());
2280   VisitOMPExecutableDirective(D);
2281   Record.AddStmt(D->getTaskReductionRefExpr());
2282   Code = serialization::STMT_OMP_PARALLEL_MASTER_DIRECTIVE;
2283 }
2284 
2285 void ASTStmtWriter::VisitOMPParallelSectionsDirective(
2286     OMPParallelSectionsDirective *D) {
2287   VisitStmt(D);
2288   Record.push_back(D->getNumClauses());
2289   VisitOMPExecutableDirective(D);
2290   Record.AddStmt(D->getTaskReductionRefExpr());
2291   Record.push_back(D->hasCancel() ? 1 : 0);
2292   Code = serialization::STMT_OMP_PARALLEL_SECTIONS_DIRECTIVE;
2293 }
2294 
2295 void ASTStmtWriter::VisitOMPTaskDirective(OMPTaskDirective *D) {
2296   VisitStmt(D);
2297   Record.push_back(D->getNumClauses());
2298   VisitOMPExecutableDirective(D);
2299   Record.push_back(D->hasCancel() ? 1 : 0);
2300   Code = serialization::STMT_OMP_TASK_DIRECTIVE;
2301 }
2302 
2303 void ASTStmtWriter::VisitOMPAtomicDirective(OMPAtomicDirective *D) {
2304   VisitStmt(D);
2305   Record.push_back(D->getNumClauses());
2306   VisitOMPExecutableDirective(D);
2307   Record.AddStmt(D->getX());
2308   Record.AddStmt(D->getV());
2309   Record.AddStmt(D->getExpr());
2310   Record.AddStmt(D->getUpdateExpr());
2311   Record.push_back(D->isXLHSInRHSPart() ? 1 : 0);
2312   Record.push_back(D->isPostfixUpdate() ? 1 : 0);
2313   Code = serialization::STMT_OMP_ATOMIC_DIRECTIVE;
2314 }
2315 
2316 void ASTStmtWriter::VisitOMPTargetDirective(OMPTargetDirective *D) {
2317   VisitStmt(D);
2318   Record.push_back(D->getNumClauses());
2319   VisitOMPExecutableDirective(D);
2320   Code = serialization::STMT_OMP_TARGET_DIRECTIVE;
2321 }
2322 
2323 void ASTStmtWriter::VisitOMPTargetDataDirective(OMPTargetDataDirective *D) {
2324   VisitStmt(D);
2325   Record.push_back(D->getNumClauses());
2326   VisitOMPExecutableDirective(D);
2327   Code = serialization::STMT_OMP_TARGET_DATA_DIRECTIVE;
2328 }
2329 
2330 void ASTStmtWriter::VisitOMPTargetEnterDataDirective(
2331     OMPTargetEnterDataDirective *D) {
2332   VisitStmt(D);
2333   Record.push_back(D->getNumClauses());
2334   VisitOMPExecutableDirective(D);
2335   Code = serialization::STMT_OMP_TARGET_ENTER_DATA_DIRECTIVE;
2336 }
2337 
2338 void ASTStmtWriter::VisitOMPTargetExitDataDirective(
2339     OMPTargetExitDataDirective *D) {
2340   VisitStmt(D);
2341   Record.push_back(D->getNumClauses());
2342   VisitOMPExecutableDirective(D);
2343   Code = serialization::STMT_OMP_TARGET_EXIT_DATA_DIRECTIVE;
2344 }
2345 
2346 void ASTStmtWriter::VisitOMPTargetParallelDirective(
2347     OMPTargetParallelDirective *D) {
2348   VisitStmt(D);
2349   Record.push_back(D->getNumClauses());
2350   VisitOMPExecutableDirective(D);
2351   Record.AddStmt(D->getTaskReductionRefExpr());
2352   Record.writeBool(D->hasCancel());
2353   Code = serialization::STMT_OMP_TARGET_PARALLEL_DIRECTIVE;
2354 }
2355 
2356 void ASTStmtWriter::VisitOMPTargetParallelForDirective(
2357     OMPTargetParallelForDirective *D) {
2358   VisitOMPLoopDirective(D);
2359   Record.AddStmt(D->getTaskReductionRefExpr());
2360   Record.push_back(D->hasCancel() ? 1 : 0);
2361   Code = serialization::STMT_OMP_TARGET_PARALLEL_FOR_DIRECTIVE;
2362 }
2363 
2364 void ASTStmtWriter::VisitOMPTaskyieldDirective(OMPTaskyieldDirective *D) {
2365   VisitStmt(D);
2366   VisitOMPExecutableDirective(D);
2367   Code = serialization::STMT_OMP_TASKYIELD_DIRECTIVE;
2368 }
2369 
2370 void ASTStmtWriter::VisitOMPBarrierDirective(OMPBarrierDirective *D) {
2371   VisitStmt(D);
2372   VisitOMPExecutableDirective(D);
2373   Code = serialization::STMT_OMP_BARRIER_DIRECTIVE;
2374 }
2375 
2376 void ASTStmtWriter::VisitOMPTaskwaitDirective(OMPTaskwaitDirective *D) {
2377   VisitStmt(D);
2378   VisitOMPExecutableDirective(D);
2379   Code = serialization::STMT_OMP_TASKWAIT_DIRECTIVE;
2380 }
2381 
2382 void ASTStmtWriter::VisitOMPTaskgroupDirective(OMPTaskgroupDirective *D) {
2383   VisitStmt(D);
2384   Record.push_back(D->getNumClauses());
2385   VisitOMPExecutableDirective(D);
2386   Record.AddStmt(D->getReductionRef());
2387   Code = serialization::STMT_OMP_TASKGROUP_DIRECTIVE;
2388 }
2389 
2390 void ASTStmtWriter::VisitOMPFlushDirective(OMPFlushDirective *D) {
2391   VisitStmt(D);
2392   Record.push_back(D->getNumClauses());
2393   VisitOMPExecutableDirective(D);
2394   Code = serialization::STMT_OMP_FLUSH_DIRECTIVE;
2395 }
2396 
2397 void ASTStmtWriter::VisitOMPDepobjDirective(OMPDepobjDirective *D) {
2398   VisitStmt(D);
2399   Record.push_back(D->getNumClauses());
2400   VisitOMPExecutableDirective(D);
2401   Code = serialization::STMT_OMP_DEPOBJ_DIRECTIVE;
2402 }
2403 
2404 void ASTStmtWriter::VisitOMPScanDirective(OMPScanDirective *D) {
2405   VisitStmt(D);
2406   Record.push_back(D->getNumClauses());
2407   VisitOMPExecutableDirective(D);
2408   Code = serialization::STMT_OMP_SCAN_DIRECTIVE;
2409 }
2410 
2411 void ASTStmtWriter::VisitOMPOrderedDirective(OMPOrderedDirective *D) {
2412   VisitStmt(D);
2413   Record.push_back(D->getNumClauses());
2414   VisitOMPExecutableDirective(D);
2415   Code = serialization::STMT_OMP_ORDERED_DIRECTIVE;
2416 }
2417 
2418 void ASTStmtWriter::VisitOMPTeamsDirective(OMPTeamsDirective *D) {
2419   VisitStmt(D);
2420   Record.push_back(D->getNumClauses());
2421   VisitOMPExecutableDirective(D);
2422   Code = serialization::STMT_OMP_TEAMS_DIRECTIVE;
2423 }
2424 
2425 void ASTStmtWriter::VisitOMPCancellationPointDirective(
2426     OMPCancellationPointDirective *D) {
2427   VisitStmt(D);
2428   VisitOMPExecutableDirective(D);
2429   Record.push_back(uint64_t(D->getCancelRegion()));
2430   Code = serialization::STMT_OMP_CANCELLATION_POINT_DIRECTIVE;
2431 }
2432 
2433 void ASTStmtWriter::VisitOMPCancelDirective(OMPCancelDirective *D) {
2434   VisitStmt(D);
2435   Record.push_back(D->getNumClauses());
2436   VisitOMPExecutableDirective(D);
2437   Record.push_back(uint64_t(D->getCancelRegion()));
2438   Code = serialization::STMT_OMP_CANCEL_DIRECTIVE;
2439 }
2440 
2441 void ASTStmtWriter::VisitOMPTaskLoopDirective(OMPTaskLoopDirective *D) {
2442   VisitOMPLoopDirective(D);
2443   Record.push_back(D->hasCancel() ? 1 : 0);
2444   Code = serialization::STMT_OMP_TASKLOOP_DIRECTIVE;
2445 }
2446 
2447 void ASTStmtWriter::VisitOMPTaskLoopSimdDirective(OMPTaskLoopSimdDirective *D) {
2448   VisitOMPLoopDirective(D);
2449   Code = serialization::STMT_OMP_TASKLOOP_SIMD_DIRECTIVE;
2450 }
2451 
2452 void ASTStmtWriter::VisitOMPMasterTaskLoopDirective(
2453     OMPMasterTaskLoopDirective *D) {
2454   VisitOMPLoopDirective(D);
2455   Record.push_back(D->hasCancel() ? 1 : 0);
2456   Code = serialization::STMT_OMP_MASTER_TASKLOOP_DIRECTIVE;
2457 }
2458 
2459 void ASTStmtWriter::VisitOMPMasterTaskLoopSimdDirective(
2460     OMPMasterTaskLoopSimdDirective *D) {
2461   VisitOMPLoopDirective(D);
2462   Code = serialization::STMT_OMP_MASTER_TASKLOOP_SIMD_DIRECTIVE;
2463 }
2464 
2465 void ASTStmtWriter::VisitOMPParallelMasterTaskLoopDirective(
2466     OMPParallelMasterTaskLoopDirective *D) {
2467   VisitOMPLoopDirective(D);
2468   Record.push_back(D->hasCancel() ? 1 : 0);
2469   Code = serialization::STMT_OMP_PARALLEL_MASTER_TASKLOOP_DIRECTIVE;
2470 }
2471 
2472 void ASTStmtWriter::VisitOMPParallelMasterTaskLoopSimdDirective(
2473     OMPParallelMasterTaskLoopSimdDirective *D) {
2474   VisitOMPLoopDirective(D);
2475   Code = serialization::STMT_OMP_PARALLEL_MASTER_TASKLOOP_SIMD_DIRECTIVE;
2476 }
2477 
2478 void ASTStmtWriter::VisitOMPDistributeDirective(OMPDistributeDirective *D) {
2479   VisitOMPLoopDirective(D);
2480   Code = serialization::STMT_OMP_DISTRIBUTE_DIRECTIVE;
2481 }
2482 
2483 void ASTStmtWriter::VisitOMPTargetUpdateDirective(OMPTargetUpdateDirective *D) {
2484   VisitStmt(D);
2485   Record.push_back(D->getNumClauses());
2486   VisitOMPExecutableDirective(D);
2487   Code = serialization::STMT_OMP_TARGET_UPDATE_DIRECTIVE;
2488 }
2489 
2490 void ASTStmtWriter::VisitOMPDistributeParallelForDirective(
2491     OMPDistributeParallelForDirective *D) {
2492   VisitOMPLoopDirective(D);
2493   Record.AddStmt(D->getTaskReductionRefExpr());
2494   Record.push_back(D->hasCancel() ? 1 : 0);
2495   Code = serialization::STMT_OMP_DISTRIBUTE_PARALLEL_FOR_DIRECTIVE;
2496 }
2497 
2498 void ASTStmtWriter::VisitOMPDistributeParallelForSimdDirective(
2499     OMPDistributeParallelForSimdDirective *D) {
2500   VisitOMPLoopDirective(D);
2501   Code = serialization::STMT_OMP_DISTRIBUTE_PARALLEL_FOR_SIMD_DIRECTIVE;
2502 }
2503 
2504 void ASTStmtWriter::VisitOMPDistributeSimdDirective(
2505     OMPDistributeSimdDirective *D) {
2506   VisitOMPLoopDirective(D);
2507   Code = serialization::STMT_OMP_DISTRIBUTE_SIMD_DIRECTIVE;
2508 }
2509 
2510 void ASTStmtWriter::VisitOMPTargetParallelForSimdDirective(
2511     OMPTargetParallelForSimdDirective *D) {
2512   VisitOMPLoopDirective(D);
2513   Code = serialization::STMT_OMP_TARGET_PARALLEL_FOR_SIMD_DIRECTIVE;
2514 }
2515 
2516 void ASTStmtWriter::VisitOMPTargetSimdDirective(OMPTargetSimdDirective *D) {
2517   VisitOMPLoopDirective(D);
2518   Code = serialization::STMT_OMP_TARGET_SIMD_DIRECTIVE;
2519 }
2520 
2521 void ASTStmtWriter::VisitOMPTeamsDistributeDirective(
2522     OMPTeamsDistributeDirective *D) {
2523   VisitOMPLoopDirective(D);
2524   Code = serialization::STMT_OMP_TEAMS_DISTRIBUTE_DIRECTIVE;
2525 }
2526 
2527 void ASTStmtWriter::VisitOMPTeamsDistributeSimdDirective(
2528     OMPTeamsDistributeSimdDirective *D) {
2529   VisitOMPLoopDirective(D);
2530   Code = serialization::STMT_OMP_TEAMS_DISTRIBUTE_SIMD_DIRECTIVE;
2531 }
2532 
2533 void ASTStmtWriter::VisitOMPTeamsDistributeParallelForSimdDirective(
2534     OMPTeamsDistributeParallelForSimdDirective *D) {
2535   VisitOMPLoopDirective(D);
2536   Code = serialization::STMT_OMP_TEAMS_DISTRIBUTE_PARALLEL_FOR_SIMD_DIRECTIVE;
2537 }
2538 
2539 void ASTStmtWriter::VisitOMPTeamsDistributeParallelForDirective(
2540     OMPTeamsDistributeParallelForDirective *D) {
2541   VisitOMPLoopDirective(D);
2542   Record.AddStmt(D->getTaskReductionRefExpr());
2543   Record.push_back(D->hasCancel() ? 1 : 0);
2544   Code = serialization::STMT_OMP_TEAMS_DISTRIBUTE_PARALLEL_FOR_DIRECTIVE;
2545 }
2546 
2547 void ASTStmtWriter::VisitOMPTargetTeamsDirective(OMPTargetTeamsDirective *D) {
2548   VisitStmt(D);
2549   Record.push_back(D->getNumClauses());
2550   VisitOMPExecutableDirective(D);
2551   Code = serialization::STMT_OMP_TARGET_TEAMS_DIRECTIVE;
2552 }
2553 
2554 void ASTStmtWriter::VisitOMPTargetTeamsDistributeDirective(
2555     OMPTargetTeamsDistributeDirective *D) {
2556   VisitOMPLoopDirective(D);
2557   Code = serialization::STMT_OMP_TARGET_TEAMS_DISTRIBUTE_DIRECTIVE;
2558 }
2559 
2560 void ASTStmtWriter::VisitOMPTargetTeamsDistributeParallelForDirective(
2561     OMPTargetTeamsDistributeParallelForDirective *D) {
2562   VisitOMPLoopDirective(D);
2563   Record.AddStmt(D->getTaskReductionRefExpr());
2564   Record.push_back(D->hasCancel() ? 1 : 0);
2565   Code = serialization::STMT_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_FOR_DIRECTIVE;
2566 }
2567 
2568 void ASTStmtWriter::VisitOMPTargetTeamsDistributeParallelForSimdDirective(
2569     OMPTargetTeamsDistributeParallelForSimdDirective *D) {
2570   VisitOMPLoopDirective(D);
2571   Code = serialization::
2572       STMT_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_FOR_SIMD_DIRECTIVE;
2573 }
2574 
2575 void ASTStmtWriter::VisitOMPTargetTeamsDistributeSimdDirective(
2576     OMPTargetTeamsDistributeSimdDirective *D) {
2577   VisitOMPLoopDirective(D);
2578   Code = serialization::STMT_OMP_TARGET_TEAMS_DISTRIBUTE_SIMD_DIRECTIVE;
2579 }
2580 
2581 //===----------------------------------------------------------------------===//
2582 // ASTWriter Implementation
2583 //===----------------------------------------------------------------------===//
2584 
2585 unsigned ASTWriter::RecordSwitchCaseID(SwitchCase *S) {
2586   assert(SwitchCaseIDs.find(S) == SwitchCaseIDs.end() &&
2587          "SwitchCase recorded twice");
2588   unsigned NextID = SwitchCaseIDs.size();
2589   SwitchCaseIDs[S] = NextID;
2590   return NextID;
2591 }
2592 
2593 unsigned ASTWriter::getSwitchCaseID(SwitchCase *S) {
2594   assert(SwitchCaseIDs.find(S) != SwitchCaseIDs.end() &&
2595          "SwitchCase hasn't been seen yet");
2596   return SwitchCaseIDs[S];
2597 }
2598 
2599 void ASTWriter::ClearSwitchCaseIDs() {
2600   SwitchCaseIDs.clear();
2601 }
2602 
2603 /// Write the given substatement or subexpression to the
2604 /// bitstream.
2605 void ASTWriter::WriteSubStmt(Stmt *S) {
2606   RecordData Record;
2607   ASTStmtWriter Writer(*this, Record);
2608   ++NumStatements;
2609 
2610   if (!S) {
2611     Stream.EmitRecord(serialization::STMT_NULL_PTR, Record);
2612     return;
2613   }
2614 
2615   llvm::DenseMap<Stmt *, uint64_t>::iterator I = SubStmtEntries.find(S);
2616   if (I != SubStmtEntries.end()) {
2617     Record.push_back(I->second);
2618     Stream.EmitRecord(serialization::STMT_REF_PTR, Record);
2619     return;
2620   }
2621 
2622 #ifndef NDEBUG
2623   assert(!ParentStmts.count(S) && "There is a Stmt cycle!");
2624 
2625   struct ParentStmtInserterRAII {
2626     Stmt *S;
2627     llvm::DenseSet<Stmt *> &ParentStmts;
2628 
2629     ParentStmtInserterRAII(Stmt *S, llvm::DenseSet<Stmt *> &ParentStmts)
2630       : S(S), ParentStmts(ParentStmts) {
2631       ParentStmts.insert(S);
2632     }
2633     ~ParentStmtInserterRAII() {
2634       ParentStmts.erase(S);
2635     }
2636   };
2637 
2638   ParentStmtInserterRAII ParentStmtInserter(S, ParentStmts);
2639 #endif
2640 
2641   Writer.Visit(S);
2642 
2643   uint64_t Offset = Writer.Emit();
2644   SubStmtEntries[S] = Offset;
2645 }
2646 
2647 /// Flush all of the statements that have been added to the
2648 /// queue via AddStmt().
2649 void ASTRecordWriter::FlushStmts() {
2650   // We expect to be the only consumer of the two temporary statement maps,
2651   // assert that they are empty.
2652   assert(Writer->SubStmtEntries.empty() && "unexpected entries in sub-stmt map");
2653   assert(Writer->ParentStmts.empty() && "unexpected entries in parent stmt map");
2654 
2655   for (unsigned I = 0, N = StmtsToEmit.size(); I != N; ++I) {
2656     Writer->WriteSubStmt(StmtsToEmit[I]);
2657 
2658     assert(N == StmtsToEmit.size() && "record modified while being written!");
2659 
2660     // Note that we are at the end of a full expression. Any
2661     // expression records that follow this one are part of a different
2662     // expression.
2663     Writer->Stream.EmitRecord(serialization::STMT_STOP, ArrayRef<uint32_t>());
2664 
2665     Writer->SubStmtEntries.clear();
2666     Writer->ParentStmts.clear();
2667   }
2668 
2669   StmtsToEmit.clear();
2670 }
2671 
2672 void ASTRecordWriter::FlushSubStmts() {
2673   // For a nested statement, write out the substatements in reverse order (so
2674   // that a simple stack machine can be used when loading), and don't emit a
2675   // STMT_STOP after each one.
2676   for (unsigned I = 0, N = StmtsToEmit.size(); I != N; ++I) {
2677     Writer->WriteSubStmt(StmtsToEmit[N - I - 1]);
2678     assert(N == StmtsToEmit.size() && "record modified while being written!");
2679   }
2680 
2681   StmtsToEmit.clear();
2682 }
2683