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.push_back(S->isSideEntry());
119   Record.AddDeclRef(S->getDecl());
120   Record.AddStmt(S->getSubStmt());
121   Record.AddSourceLocation(S->getIdentLoc());
122   Code = serialization::STMT_LABEL;
123 }
124 
125 void ASTStmtWriter::VisitAttributedStmt(AttributedStmt *S) {
126   VisitStmt(S);
127   Record.push_back(S->getAttrs().size());
128   Record.AddAttributes(S->getAttrs());
129   Record.AddStmt(S->getSubStmt());
130   Record.AddSourceLocation(S->getAttrLoc());
131   Code = serialization::STMT_ATTRIBUTED;
132 }
133 
134 void ASTStmtWriter::VisitIfStmt(IfStmt *S) {
135   VisitStmt(S);
136 
137   bool HasElse = S->getElse() != nullptr;
138   bool HasVar = S->getConditionVariableDeclStmt() != nullptr;
139   bool HasInit = S->getInit() != nullptr;
140 
141   Record.push_back(HasElse);
142   Record.push_back(HasVar);
143   Record.push_back(HasInit);
144   Record.push_back(static_cast<uint64_t>(S->getStatementKind()));
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   Record.AddSourceLocation(S->getLParenLoc());
156   Record.AddSourceLocation(S->getRParenLoc());
157   if (HasElse)
158     Record.AddSourceLocation(S->getElseLoc());
159 
160   Code = serialization::STMT_IF;
161 }
162 
163 void ASTStmtWriter::VisitSwitchStmt(SwitchStmt *S) {
164   VisitStmt(S);
165 
166   bool HasInit = S->getInit() != nullptr;
167   bool HasVar = S->getConditionVariableDeclStmt() != nullptr;
168   Record.push_back(HasInit);
169   Record.push_back(HasVar);
170   Record.push_back(S->isAllEnumCasesCovered());
171 
172   Record.AddStmt(S->getCond());
173   Record.AddStmt(S->getBody());
174   if (HasInit)
175     Record.AddStmt(S->getInit());
176   if (HasVar)
177     Record.AddDeclRef(S->getConditionVariable());
178 
179   Record.AddSourceLocation(S->getSwitchLoc());
180   Record.AddSourceLocation(S->getLParenLoc());
181   Record.AddSourceLocation(S->getRParenLoc());
182 
183   for (SwitchCase *SC = S->getSwitchCaseList(); SC;
184        SC = SC->getNextSwitchCase())
185     Record.push_back(Writer.RecordSwitchCaseID(SC));
186   Code = serialization::STMT_SWITCH;
187 }
188 
189 void ASTStmtWriter::VisitWhileStmt(WhileStmt *S) {
190   VisitStmt(S);
191 
192   bool HasVar = S->getConditionVariableDeclStmt() != nullptr;
193   Record.push_back(HasVar);
194 
195   Record.AddStmt(S->getCond());
196   Record.AddStmt(S->getBody());
197   if (HasVar)
198     Record.AddDeclRef(S->getConditionVariable());
199 
200   Record.AddSourceLocation(S->getWhileLoc());
201   Record.AddSourceLocation(S->getLParenLoc());
202   Record.AddSourceLocation(S->getRParenLoc());
203   Code = serialization::STMT_WHILE;
204 }
205 
206 void ASTStmtWriter::VisitDoStmt(DoStmt *S) {
207   VisitStmt(S);
208   Record.AddStmt(S->getCond());
209   Record.AddStmt(S->getBody());
210   Record.AddSourceLocation(S->getDoLoc());
211   Record.AddSourceLocation(S->getWhileLoc());
212   Record.AddSourceLocation(S->getRParenLoc());
213   Code = serialization::STMT_DO;
214 }
215 
216 void ASTStmtWriter::VisitForStmt(ForStmt *S) {
217   VisitStmt(S);
218   Record.AddStmt(S->getInit());
219   Record.AddStmt(S->getCond());
220   Record.AddDeclRef(S->getConditionVariable());
221   Record.AddStmt(S->getInc());
222   Record.AddStmt(S->getBody());
223   Record.AddSourceLocation(S->getForLoc());
224   Record.AddSourceLocation(S->getLParenLoc());
225   Record.AddSourceLocation(S->getRParenLoc());
226   Code = serialization::STMT_FOR;
227 }
228 
229 void ASTStmtWriter::VisitGotoStmt(GotoStmt *S) {
230   VisitStmt(S);
231   Record.AddDeclRef(S->getLabel());
232   Record.AddSourceLocation(S->getGotoLoc());
233   Record.AddSourceLocation(S->getLabelLoc());
234   Code = serialization::STMT_GOTO;
235 }
236 
237 void ASTStmtWriter::VisitIndirectGotoStmt(IndirectGotoStmt *S) {
238   VisitStmt(S);
239   Record.AddSourceLocation(S->getGotoLoc());
240   Record.AddSourceLocation(S->getStarLoc());
241   Record.AddStmt(S->getTarget());
242   Code = serialization::STMT_INDIRECT_GOTO;
243 }
244 
245 void ASTStmtWriter::VisitContinueStmt(ContinueStmt *S) {
246   VisitStmt(S);
247   Record.AddSourceLocation(S->getContinueLoc());
248   Code = serialization::STMT_CONTINUE;
249 }
250 
251 void ASTStmtWriter::VisitBreakStmt(BreakStmt *S) {
252   VisitStmt(S);
253   Record.AddSourceLocation(S->getBreakLoc());
254   Code = serialization::STMT_BREAK;
255 }
256 
257 void ASTStmtWriter::VisitReturnStmt(ReturnStmt *S) {
258   VisitStmt(S);
259 
260   bool HasNRVOCandidate = S->getNRVOCandidate() != nullptr;
261   Record.push_back(HasNRVOCandidate);
262 
263   Record.AddStmt(S->getRetValue());
264   if (HasNRVOCandidate)
265     Record.AddDeclRef(S->getNRVOCandidate());
266 
267   Record.AddSourceLocation(S->getReturnLoc());
268   Code = serialization::STMT_RETURN;
269 }
270 
271 void ASTStmtWriter::VisitDeclStmt(DeclStmt *S) {
272   VisitStmt(S);
273   Record.AddSourceLocation(S->getBeginLoc());
274   Record.AddSourceLocation(S->getEndLoc());
275   DeclGroupRef DG = S->getDeclGroup();
276   for (DeclGroupRef::iterator D = DG.begin(), DEnd = DG.end(); D != DEnd; ++D)
277     Record.AddDeclRef(*D);
278   Code = serialization::STMT_DECL;
279 }
280 
281 void ASTStmtWriter::VisitAsmStmt(AsmStmt *S) {
282   VisitStmt(S);
283   Record.push_back(S->getNumOutputs());
284   Record.push_back(S->getNumInputs());
285   Record.push_back(S->getNumClobbers());
286   Record.AddSourceLocation(S->getAsmLoc());
287   Record.push_back(S->isVolatile());
288   Record.push_back(S->isSimple());
289 }
290 
291 void ASTStmtWriter::VisitGCCAsmStmt(GCCAsmStmt *S) {
292   VisitAsmStmt(S);
293   Record.push_back(S->getNumLabels());
294   Record.AddSourceLocation(S->getRParenLoc());
295   Record.AddStmt(S->getAsmString());
296 
297   // Outputs
298   for (unsigned I = 0, N = S->getNumOutputs(); I != N; ++I) {
299     Record.AddIdentifierRef(S->getOutputIdentifier(I));
300     Record.AddStmt(S->getOutputConstraintLiteral(I));
301     Record.AddStmt(S->getOutputExpr(I));
302   }
303 
304   // Inputs
305   for (unsigned I = 0, N = S->getNumInputs(); I != N; ++I) {
306     Record.AddIdentifierRef(S->getInputIdentifier(I));
307     Record.AddStmt(S->getInputConstraintLiteral(I));
308     Record.AddStmt(S->getInputExpr(I));
309   }
310 
311   // Clobbers
312   for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I)
313     Record.AddStmt(S->getClobberStringLiteral(I));
314 
315   // Labels
316   for (auto *E : S->labels()) Record.AddStmt(E);
317 
318   Code = serialization::STMT_GCCASM;
319 }
320 
321 void ASTStmtWriter::VisitMSAsmStmt(MSAsmStmt *S) {
322   VisitAsmStmt(S);
323   Record.AddSourceLocation(S->getLBraceLoc());
324   Record.AddSourceLocation(S->getEndLoc());
325   Record.push_back(S->getNumAsmToks());
326   Record.AddString(S->getAsmString());
327 
328   // Tokens
329   for (unsigned I = 0, N = S->getNumAsmToks(); I != N; ++I) {
330     // FIXME: Move this to ASTRecordWriter?
331     Writer.AddToken(S->getAsmToks()[I], Record.getRecordData());
332   }
333 
334   // Clobbers
335   for (unsigned I = 0, N = S->getNumClobbers(); I != N; ++I) {
336     Record.AddString(S->getClobber(I));
337   }
338 
339   // Outputs
340   for (unsigned I = 0, N = S->getNumOutputs(); I != N; ++I) {
341     Record.AddStmt(S->getOutputExpr(I));
342     Record.AddString(S->getOutputConstraint(I));
343   }
344 
345   // Inputs
346   for (unsigned I = 0, N = S->getNumInputs(); I != N; ++I) {
347     Record.AddStmt(S->getInputExpr(I));
348     Record.AddString(S->getInputConstraint(I));
349   }
350 
351   Code = serialization::STMT_MSASM;
352 }
353 
354 void ASTStmtWriter::VisitCoroutineBodyStmt(CoroutineBodyStmt *CoroStmt) {
355   VisitStmt(CoroStmt);
356   Record.push_back(CoroStmt->getParamMoves().size());
357   for (Stmt *S : CoroStmt->children())
358     Record.AddStmt(S);
359   Code = serialization::STMT_COROUTINE_BODY;
360 }
361 
362 void ASTStmtWriter::VisitCoreturnStmt(CoreturnStmt *S) {
363   VisitStmt(S);
364   Record.AddSourceLocation(S->getKeywordLoc());
365   Record.AddStmt(S->getOperand());
366   Record.AddStmt(S->getPromiseCall());
367   Record.push_back(S->isImplicit());
368   Code = serialization::STMT_CORETURN;
369 }
370 
371 void ASTStmtWriter::VisitCoroutineSuspendExpr(CoroutineSuspendExpr *E) {
372   VisitExpr(E);
373   Record.AddSourceLocation(E->getKeywordLoc());
374   for (Stmt *S : E->children())
375     Record.AddStmt(S);
376   Record.AddStmt(E->getOpaqueValue());
377 }
378 
379 void ASTStmtWriter::VisitCoawaitExpr(CoawaitExpr *E) {
380   VisitCoroutineSuspendExpr(E);
381   Record.push_back(E->isImplicit());
382   Code = serialization::EXPR_COAWAIT;
383 }
384 
385 void ASTStmtWriter::VisitCoyieldExpr(CoyieldExpr *E) {
386   VisitCoroutineSuspendExpr(E);
387   Code = serialization::EXPR_COYIELD;
388 }
389 
390 void ASTStmtWriter::VisitDependentCoawaitExpr(DependentCoawaitExpr *E) {
391   VisitExpr(E);
392   Record.AddSourceLocation(E->getKeywordLoc());
393   for (Stmt *S : E->children())
394     Record.AddStmt(S);
395   Code = serialization::EXPR_DEPENDENT_COAWAIT;
396 }
397 
398 static void
399 addConstraintSatisfaction(ASTRecordWriter &Record,
400                           const ASTConstraintSatisfaction &Satisfaction) {
401   Record.push_back(Satisfaction.IsSatisfied);
402   if (!Satisfaction.IsSatisfied) {
403     Record.push_back(Satisfaction.NumRecords);
404     for (const auto &DetailRecord : Satisfaction) {
405       Record.AddStmt(const_cast<Expr *>(DetailRecord.first));
406       auto *E = DetailRecord.second.dyn_cast<Expr *>();
407       Record.push_back(E == nullptr);
408       if (E)
409         Record.AddStmt(E);
410       else {
411         auto *Diag = DetailRecord.second.get<std::pair<SourceLocation,
412                                                        StringRef> *>();
413         Record.AddSourceLocation(Diag->first);
414         Record.AddString(Diag->second);
415       }
416     }
417   }
418 }
419 
420 static void
421 addSubstitutionDiagnostic(
422     ASTRecordWriter &Record,
423     const concepts::Requirement::SubstitutionDiagnostic *D) {
424   Record.AddString(D->SubstitutedEntity);
425   Record.AddSourceLocation(D->DiagLoc);
426   Record.AddString(D->DiagMessage);
427 }
428 
429 void ASTStmtWriter::VisitConceptSpecializationExpr(
430         ConceptSpecializationExpr *E) {
431   VisitExpr(E);
432   ArrayRef<TemplateArgument> TemplateArgs = E->getTemplateArguments();
433   Record.push_back(TemplateArgs.size());
434   Record.AddNestedNameSpecifierLoc(E->getNestedNameSpecifierLoc());
435   Record.AddSourceLocation(E->getTemplateKWLoc());
436   Record.AddDeclarationNameInfo(E->getConceptNameInfo());
437   Record.AddDeclRef(E->getNamedConcept());
438   Record.AddDeclRef(E->getFoundDecl());
439   Record.AddASTTemplateArgumentListInfo(E->getTemplateArgsAsWritten());
440   for (const TemplateArgument &Arg : TemplateArgs)
441     Record.AddTemplateArgument(Arg);
442   if (!E->isValueDependent())
443     addConstraintSatisfaction(Record, E->getSatisfaction());
444 
445   Code = serialization::EXPR_CONCEPT_SPECIALIZATION;
446 }
447 
448 void ASTStmtWriter::VisitRequiresExpr(RequiresExpr *E) {
449   VisitExpr(E);
450   Record.push_back(E->getLocalParameters().size());
451   Record.push_back(E->getRequirements().size());
452   Record.AddSourceLocation(E->RequiresExprBits.RequiresKWLoc);
453   Record.push_back(E->RequiresExprBits.IsSatisfied);
454   Record.AddDeclRef(E->getBody());
455   for (ParmVarDecl *P : E->getLocalParameters())
456     Record.AddDeclRef(P);
457   for (concepts::Requirement *R : E->getRequirements()) {
458     if (auto *TypeReq = dyn_cast<concepts::TypeRequirement>(R)) {
459       Record.push_back(concepts::Requirement::RK_Type);
460       Record.push_back(TypeReq->Status);
461       if (TypeReq->Status == concepts::TypeRequirement::SS_SubstitutionFailure)
462         addSubstitutionDiagnostic(Record, TypeReq->getSubstitutionDiagnostic());
463       else
464         Record.AddTypeSourceInfo(TypeReq->getType());
465     } else if (auto *ExprReq = dyn_cast<concepts::ExprRequirement>(R)) {
466       Record.push_back(ExprReq->getKind());
467       Record.push_back(ExprReq->Status);
468       if (ExprReq->isExprSubstitutionFailure()) {
469         addSubstitutionDiagnostic(Record,
470          ExprReq->Value.get<concepts::Requirement::SubstitutionDiagnostic *>());
471       } else
472         Record.AddStmt(ExprReq->Value.get<Expr *>());
473       if (ExprReq->getKind() == concepts::Requirement::RK_Compound) {
474         Record.AddSourceLocation(ExprReq->NoexceptLoc);
475         const auto &RetReq = ExprReq->getReturnTypeRequirement();
476         if (RetReq.isSubstitutionFailure()) {
477           Record.push_back(2);
478           addSubstitutionDiagnostic(Record, RetReq.getSubstitutionDiagnostic());
479         } else if (RetReq.isTypeConstraint()) {
480           Record.push_back(1);
481           Record.AddTemplateParameterList(
482               RetReq.getTypeConstraintTemplateParameterList());
483           if (ExprReq->Status >=
484               concepts::ExprRequirement::SS_ConstraintsNotSatisfied)
485             Record.AddStmt(
486                 ExprReq->getReturnTypeRequirementSubstitutedConstraintExpr());
487         } else {
488           assert(RetReq.isEmpty());
489           Record.push_back(0);
490         }
491       }
492     } else {
493       auto *NestedReq = cast<concepts::NestedRequirement>(R);
494       Record.push_back(concepts::Requirement::RK_Nested);
495       Record.push_back(NestedReq->isSubstitutionFailure());
496       if (NestedReq->isSubstitutionFailure()){
497         addSubstitutionDiagnostic(Record,
498                                   NestedReq->getSubstitutionDiagnostic());
499       } else {
500         Record.AddStmt(NestedReq->Value.get<Expr *>());
501         if (!NestedReq->isDependent())
502           addConstraintSatisfaction(Record, *NestedReq->Satisfaction);
503       }
504     }
505   }
506   Record.AddSourceLocation(E->getEndLoc());
507 
508   Code = serialization::EXPR_REQUIRES;
509 }
510 
511 
512 void ASTStmtWriter::VisitCapturedStmt(CapturedStmt *S) {
513   VisitStmt(S);
514   // NumCaptures
515   Record.push_back(std::distance(S->capture_begin(), S->capture_end()));
516 
517   // CapturedDecl and captured region kind
518   Record.AddDeclRef(S->getCapturedDecl());
519   Record.push_back(S->getCapturedRegionKind());
520 
521   Record.AddDeclRef(S->getCapturedRecordDecl());
522 
523   // Capture inits
524   for (auto *I : S->capture_inits())
525     Record.AddStmt(I);
526 
527   // Body
528   Record.AddStmt(S->getCapturedStmt());
529 
530   // Captures
531   for (const auto &I : S->captures()) {
532     if (I.capturesThis() || I.capturesVariableArrayType())
533       Record.AddDeclRef(nullptr);
534     else
535       Record.AddDeclRef(I.getCapturedVar());
536     Record.push_back(I.getCaptureKind());
537     Record.AddSourceLocation(I.getLocation());
538   }
539 
540   Code = serialization::STMT_CAPTURED;
541 }
542 
543 void ASTStmtWriter::VisitExpr(Expr *E) {
544   VisitStmt(E);
545   Record.AddTypeRef(E->getType());
546   Record.push_back(E->isTypeDependent());
547   Record.push_back(E->isValueDependent());
548   Record.push_back(E->isInstantiationDependent());
549   Record.push_back(E->containsUnexpandedParameterPack());
550   Record.push_back(E->containsErrors());
551   Record.push_back(E->getValueKind());
552   Record.push_back(E->getObjectKind());
553 }
554 
555 void ASTStmtWriter::VisitConstantExpr(ConstantExpr *E) {
556   VisitExpr(E);
557   Record.push_back(E->ConstantExprBits.ResultKind);
558 
559   Record.push_back(E->ConstantExprBits.APValueKind);
560   Record.push_back(E->ConstantExprBits.IsUnsigned);
561   Record.push_back(E->ConstantExprBits.BitWidth);
562   // HasCleanup not serialized since we can just query the APValue.
563   Record.push_back(E->ConstantExprBits.IsImmediateInvocation);
564 
565   switch (E->ConstantExprBits.ResultKind) {
566   case ConstantExpr::RSK_None:
567     break;
568   case ConstantExpr::RSK_Int64:
569     Record.push_back(E->Int64Result());
570     break;
571   case ConstantExpr::RSK_APValue:
572     Record.AddAPValue(E->APValueResult());
573     break;
574   default:
575     llvm_unreachable("unexpected ResultKind!");
576   }
577 
578   Record.AddStmt(E->getSubExpr());
579   Code = serialization::EXPR_CONSTANT;
580 }
581 
582 void ASTStmtWriter::VisitSYCLUniqueStableNameExpr(SYCLUniqueStableNameExpr *E) {
583   VisitExpr(E);
584 
585   Record.AddSourceLocation(E->getLocation());
586   Record.AddSourceLocation(E->getLParenLocation());
587   Record.AddSourceLocation(E->getRParenLocation());
588   Record.AddTypeSourceInfo(E->getTypeSourceInfo());
589 
590   Code = serialization::EXPR_SYCL_UNIQUE_STABLE_NAME;
591 }
592 
593 void ASTStmtWriter::VisitPredefinedExpr(PredefinedExpr *E) {
594   VisitExpr(E);
595 
596   bool HasFunctionName = E->getFunctionName() != nullptr;
597   Record.push_back(HasFunctionName);
598   Record.push_back(E->getIdentKind()); // FIXME: stable encoding
599   Record.AddSourceLocation(E->getLocation());
600   if (HasFunctionName)
601     Record.AddStmt(E->getFunctionName());
602   Code = serialization::EXPR_PREDEFINED;
603 }
604 
605 void ASTStmtWriter::VisitDeclRefExpr(DeclRefExpr *E) {
606   VisitExpr(E);
607 
608   Record.push_back(E->hasQualifier());
609   Record.push_back(E->getDecl() != E->getFoundDecl());
610   Record.push_back(E->hasTemplateKWAndArgsInfo());
611   Record.push_back(E->hadMultipleCandidates());
612   Record.push_back(E->refersToEnclosingVariableOrCapture());
613   Record.push_back(E->isNonOdrUse());
614 
615   if (E->hasTemplateKWAndArgsInfo()) {
616     unsigned NumTemplateArgs = E->getNumTemplateArgs();
617     Record.push_back(NumTemplateArgs);
618   }
619 
620   DeclarationName::NameKind nk = (E->getDecl()->getDeclName().getNameKind());
621 
622   if ((!E->hasTemplateKWAndArgsInfo()) && (!E->hasQualifier()) &&
623       (E->getDecl() == E->getFoundDecl()) &&
624       nk == DeclarationName::Identifier &&
625       !E->refersToEnclosingVariableOrCapture() && !E->isNonOdrUse()) {
626     AbbrevToUse = Writer.getDeclRefExprAbbrev();
627   }
628 
629   if (E->hasQualifier())
630     Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
631 
632   if (E->getDecl() != E->getFoundDecl())
633     Record.AddDeclRef(E->getFoundDecl());
634 
635   if (E->hasTemplateKWAndArgsInfo())
636     AddTemplateKWAndArgsInfo(*E->getTrailingObjects<ASTTemplateKWAndArgsInfo>(),
637                              E->getTrailingObjects<TemplateArgumentLoc>());
638 
639   Record.AddDeclRef(E->getDecl());
640   Record.AddSourceLocation(E->getLocation());
641   Record.AddDeclarationNameLoc(E->DNLoc, E->getDecl()->getDeclName());
642   Code = serialization::EXPR_DECL_REF;
643 }
644 
645 void ASTStmtWriter::VisitIntegerLiteral(IntegerLiteral *E) {
646   VisitExpr(E);
647   Record.AddSourceLocation(E->getLocation());
648   Record.AddAPInt(E->getValue());
649 
650   if (E->getValue().getBitWidth() == 32) {
651     AbbrevToUse = Writer.getIntegerLiteralAbbrev();
652   }
653 
654   Code = serialization::EXPR_INTEGER_LITERAL;
655 }
656 
657 void ASTStmtWriter::VisitFixedPointLiteral(FixedPointLiteral *E) {
658   VisitExpr(E);
659   Record.AddSourceLocation(E->getLocation());
660   Record.push_back(E->getScale());
661   Record.AddAPInt(E->getValue());
662   Code = serialization::EXPR_FIXEDPOINT_LITERAL;
663 }
664 
665 void ASTStmtWriter::VisitFloatingLiteral(FloatingLiteral *E) {
666   VisitExpr(E);
667   Record.push_back(E->getRawSemantics());
668   Record.push_back(E->isExact());
669   Record.AddAPFloat(E->getValue());
670   Record.AddSourceLocation(E->getLocation());
671   Code = serialization::EXPR_FLOATING_LITERAL;
672 }
673 
674 void ASTStmtWriter::VisitImaginaryLiteral(ImaginaryLiteral *E) {
675   VisitExpr(E);
676   Record.AddStmt(E->getSubExpr());
677   Code = serialization::EXPR_IMAGINARY_LITERAL;
678 }
679 
680 void ASTStmtWriter::VisitStringLiteral(StringLiteral *E) {
681   VisitExpr(E);
682 
683   // Store the various bits of data of StringLiteral.
684   Record.push_back(E->getNumConcatenated());
685   Record.push_back(E->getLength());
686   Record.push_back(E->getCharByteWidth());
687   Record.push_back(E->getKind());
688   Record.push_back(E->isPascal());
689 
690   // Store the trailing array of SourceLocation.
691   for (unsigned I = 0, N = E->getNumConcatenated(); I != N; ++I)
692     Record.AddSourceLocation(E->getStrTokenLoc(I));
693 
694   // Store the trailing array of char holding the string data.
695   StringRef StrData = E->getBytes();
696   for (unsigned I = 0, N = E->getByteLength(); I != N; ++I)
697     Record.push_back(StrData[I]);
698 
699   Code = serialization::EXPR_STRING_LITERAL;
700 }
701 
702 void ASTStmtWriter::VisitCharacterLiteral(CharacterLiteral *E) {
703   VisitExpr(E);
704   Record.push_back(E->getValue());
705   Record.AddSourceLocation(E->getLocation());
706   Record.push_back(E->getKind());
707 
708   AbbrevToUse = Writer.getCharacterLiteralAbbrev();
709 
710   Code = serialization::EXPR_CHARACTER_LITERAL;
711 }
712 
713 void ASTStmtWriter::VisitParenExpr(ParenExpr *E) {
714   VisitExpr(E);
715   Record.AddSourceLocation(E->getLParen());
716   Record.AddSourceLocation(E->getRParen());
717   Record.AddStmt(E->getSubExpr());
718   Code = serialization::EXPR_PAREN;
719 }
720 
721 void ASTStmtWriter::VisitParenListExpr(ParenListExpr *E) {
722   VisitExpr(E);
723   Record.push_back(E->getNumExprs());
724   for (auto *SubStmt : E->exprs())
725     Record.AddStmt(SubStmt);
726   Record.AddSourceLocation(E->getLParenLoc());
727   Record.AddSourceLocation(E->getRParenLoc());
728   Code = serialization::EXPR_PAREN_LIST;
729 }
730 
731 void ASTStmtWriter::VisitUnaryOperator(UnaryOperator *E) {
732   VisitExpr(E);
733   bool HasFPFeatures = E->hasStoredFPFeatures();
734   // Write this first for easy access when deserializing, as they affect the
735   // size of the UnaryOperator.
736   Record.push_back(HasFPFeatures);
737   Record.AddStmt(E->getSubExpr());
738   Record.push_back(E->getOpcode()); // FIXME: stable encoding
739   Record.AddSourceLocation(E->getOperatorLoc());
740   Record.push_back(E->canOverflow());
741   if (HasFPFeatures)
742     Record.push_back(E->getStoredFPFeatures().getAsOpaqueInt());
743   Code = serialization::EXPR_UNARY_OPERATOR;
744 }
745 
746 void ASTStmtWriter::VisitOffsetOfExpr(OffsetOfExpr *E) {
747   VisitExpr(E);
748   Record.push_back(E->getNumComponents());
749   Record.push_back(E->getNumExpressions());
750   Record.AddSourceLocation(E->getOperatorLoc());
751   Record.AddSourceLocation(E->getRParenLoc());
752   Record.AddTypeSourceInfo(E->getTypeSourceInfo());
753   for (unsigned I = 0, N = E->getNumComponents(); I != N; ++I) {
754     const OffsetOfNode &ON = E->getComponent(I);
755     Record.push_back(ON.getKind()); // FIXME: Stable encoding
756     Record.AddSourceLocation(ON.getSourceRange().getBegin());
757     Record.AddSourceLocation(ON.getSourceRange().getEnd());
758     switch (ON.getKind()) {
759     case OffsetOfNode::Array:
760       Record.push_back(ON.getArrayExprIndex());
761       break;
762 
763     case OffsetOfNode::Field:
764       Record.AddDeclRef(ON.getField());
765       break;
766 
767     case OffsetOfNode::Identifier:
768       Record.AddIdentifierRef(ON.getFieldName());
769       break;
770 
771     case OffsetOfNode::Base:
772       Record.AddCXXBaseSpecifier(*ON.getBase());
773       break;
774     }
775   }
776   for (unsigned I = 0, N = E->getNumExpressions(); I != N; ++I)
777     Record.AddStmt(E->getIndexExpr(I));
778   Code = serialization::EXPR_OFFSETOF;
779 }
780 
781 void ASTStmtWriter::VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *E) {
782   VisitExpr(E);
783   Record.push_back(E->getKind());
784   if (E->isArgumentType())
785     Record.AddTypeSourceInfo(E->getArgumentTypeInfo());
786   else {
787     Record.push_back(0);
788     Record.AddStmt(E->getArgumentExpr());
789   }
790   Record.AddSourceLocation(E->getOperatorLoc());
791   Record.AddSourceLocation(E->getRParenLoc());
792   Code = serialization::EXPR_SIZEOF_ALIGN_OF;
793 }
794 
795 void ASTStmtWriter::VisitArraySubscriptExpr(ArraySubscriptExpr *E) {
796   VisitExpr(E);
797   Record.AddStmt(E->getLHS());
798   Record.AddStmt(E->getRHS());
799   Record.AddSourceLocation(E->getRBracketLoc());
800   Code = serialization::EXPR_ARRAY_SUBSCRIPT;
801 }
802 
803 void ASTStmtWriter::VisitMatrixSubscriptExpr(MatrixSubscriptExpr *E) {
804   VisitExpr(E);
805   Record.AddStmt(E->getBase());
806   Record.AddStmt(E->getRowIdx());
807   Record.AddStmt(E->getColumnIdx());
808   Record.AddSourceLocation(E->getRBracketLoc());
809   Code = serialization::EXPR_ARRAY_SUBSCRIPT;
810 }
811 
812 void ASTStmtWriter::VisitOMPArraySectionExpr(OMPArraySectionExpr *E) {
813   VisitExpr(E);
814   Record.AddStmt(E->getBase());
815   Record.AddStmt(E->getLowerBound());
816   Record.AddStmt(E->getLength());
817   Record.AddStmt(E->getStride());
818   Record.AddSourceLocation(E->getColonLocFirst());
819   Record.AddSourceLocation(E->getColonLocSecond());
820   Record.AddSourceLocation(E->getRBracketLoc());
821   Code = serialization::EXPR_OMP_ARRAY_SECTION;
822 }
823 
824 void ASTStmtWriter::VisitOMPArrayShapingExpr(OMPArrayShapingExpr *E) {
825   VisitExpr(E);
826   Record.push_back(E->getDimensions().size());
827   Record.AddStmt(E->getBase());
828   for (Expr *Dim : E->getDimensions())
829     Record.AddStmt(Dim);
830   for (SourceRange SR : E->getBracketsRanges())
831     Record.AddSourceRange(SR);
832   Record.AddSourceLocation(E->getLParenLoc());
833   Record.AddSourceLocation(E->getRParenLoc());
834   Code = serialization::EXPR_OMP_ARRAY_SHAPING;
835 }
836 
837 void ASTStmtWriter::VisitOMPIteratorExpr(OMPIteratorExpr *E) {
838   VisitExpr(E);
839   Record.push_back(E->numOfIterators());
840   Record.AddSourceLocation(E->getIteratorKwLoc());
841   Record.AddSourceLocation(E->getLParenLoc());
842   Record.AddSourceLocation(E->getRParenLoc());
843   for (unsigned I = 0, End = E->numOfIterators(); I < End; ++I) {
844     Record.AddDeclRef(E->getIteratorDecl(I));
845     Record.AddSourceLocation(E->getAssignLoc(I));
846     OMPIteratorExpr::IteratorRange Range = E->getIteratorRange(I);
847     Record.AddStmt(Range.Begin);
848     Record.AddStmt(Range.End);
849     Record.AddStmt(Range.Step);
850     Record.AddSourceLocation(E->getColonLoc(I));
851     if (Range.Step)
852       Record.AddSourceLocation(E->getSecondColonLoc(I));
853     // Serialize helpers
854     OMPIteratorHelperData &HD = E->getHelper(I);
855     Record.AddDeclRef(HD.CounterVD);
856     Record.AddStmt(HD.Upper);
857     Record.AddStmt(HD.Update);
858     Record.AddStmt(HD.CounterUpdate);
859   }
860   Code = serialization::EXPR_OMP_ITERATOR;
861 }
862 
863 void ASTStmtWriter::VisitCallExpr(CallExpr *E) {
864   VisitExpr(E);
865   Record.push_back(E->getNumArgs());
866   Record.push_back(E->hasStoredFPFeatures());
867   Record.AddSourceLocation(E->getRParenLoc());
868   Record.AddStmt(E->getCallee());
869   for (CallExpr::arg_iterator Arg = E->arg_begin(), ArgEnd = E->arg_end();
870        Arg != ArgEnd; ++Arg)
871     Record.AddStmt(*Arg);
872   Record.push_back(static_cast<unsigned>(E->getADLCallKind()));
873   if (E->hasStoredFPFeatures())
874     Record.push_back(E->getFPFeatures().getAsOpaqueInt());
875   Code = serialization::EXPR_CALL;
876 }
877 
878 void ASTStmtWriter::VisitRecoveryExpr(RecoveryExpr *E) {
879   VisitExpr(E);
880   Record.push_back(std::distance(E->children().begin(), E->children().end()));
881   Record.AddSourceLocation(E->getBeginLoc());
882   Record.AddSourceLocation(E->getEndLoc());
883   for (Stmt *Child : E->children())
884     Record.AddStmt(Child);
885   Code = serialization::EXPR_RECOVERY;
886 }
887 
888 void ASTStmtWriter::VisitMemberExpr(MemberExpr *E) {
889   VisitExpr(E);
890 
891   bool HasQualifier = E->hasQualifier();
892   bool HasFoundDecl =
893       E->hasQualifierOrFoundDecl() &&
894       (E->getFoundDecl().getDecl() != E->getMemberDecl() ||
895        E->getFoundDecl().getAccess() != E->getMemberDecl()->getAccess());
896   bool HasTemplateInfo = E->hasTemplateKWAndArgsInfo();
897   unsigned NumTemplateArgs = E->getNumTemplateArgs();
898 
899   // Write these first for easy access when deserializing, as they affect the
900   // size of the MemberExpr.
901   Record.push_back(HasQualifier);
902   Record.push_back(HasFoundDecl);
903   Record.push_back(HasTemplateInfo);
904   Record.push_back(NumTemplateArgs);
905 
906   Record.AddStmt(E->getBase());
907   Record.AddDeclRef(E->getMemberDecl());
908   Record.AddDeclarationNameLoc(E->MemberDNLoc,
909                                E->getMemberDecl()->getDeclName());
910   Record.AddSourceLocation(E->getMemberLoc());
911   Record.push_back(E->isArrow());
912   Record.push_back(E->hadMultipleCandidates());
913   Record.push_back(E->isNonOdrUse());
914   Record.AddSourceLocation(E->getOperatorLoc());
915 
916   if (HasFoundDecl) {
917     DeclAccessPair FoundDecl = E->getFoundDecl();
918     Record.AddDeclRef(FoundDecl.getDecl());
919     Record.push_back(FoundDecl.getAccess());
920   }
921 
922   if (HasQualifier)
923     Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
924 
925   if (HasTemplateInfo)
926     AddTemplateKWAndArgsInfo(*E->getTrailingObjects<ASTTemplateKWAndArgsInfo>(),
927                              E->getTrailingObjects<TemplateArgumentLoc>());
928 
929   Code = serialization::EXPR_MEMBER;
930 }
931 
932 void ASTStmtWriter::VisitObjCIsaExpr(ObjCIsaExpr *E) {
933   VisitExpr(E);
934   Record.AddStmt(E->getBase());
935   Record.AddSourceLocation(E->getIsaMemberLoc());
936   Record.AddSourceLocation(E->getOpLoc());
937   Record.push_back(E->isArrow());
938   Code = serialization::EXPR_OBJC_ISA;
939 }
940 
941 void ASTStmtWriter::
942 VisitObjCIndirectCopyRestoreExpr(ObjCIndirectCopyRestoreExpr *E) {
943   VisitExpr(E);
944   Record.AddStmt(E->getSubExpr());
945   Record.push_back(E->shouldCopy());
946   Code = serialization::EXPR_OBJC_INDIRECT_COPY_RESTORE;
947 }
948 
949 void ASTStmtWriter::VisitObjCBridgedCastExpr(ObjCBridgedCastExpr *E) {
950   VisitExplicitCastExpr(E);
951   Record.AddSourceLocation(E->getLParenLoc());
952   Record.AddSourceLocation(E->getBridgeKeywordLoc());
953   Record.push_back(E->getBridgeKind()); // FIXME: Stable encoding
954   Code = serialization::EXPR_OBJC_BRIDGED_CAST;
955 }
956 
957 void ASTStmtWriter::VisitCastExpr(CastExpr *E) {
958   VisitExpr(E);
959   Record.push_back(E->path_size());
960   Record.push_back(E->hasStoredFPFeatures());
961   Record.AddStmt(E->getSubExpr());
962   Record.push_back(E->getCastKind()); // FIXME: stable encoding
963 
964   for (CastExpr::path_iterator
965          PI = E->path_begin(), PE = E->path_end(); PI != PE; ++PI)
966     Record.AddCXXBaseSpecifier(**PI);
967 
968   if (E->hasStoredFPFeatures())
969     Record.push_back(E->getFPFeatures().getAsOpaqueInt());
970 }
971 
972 void ASTStmtWriter::VisitBinaryOperator(BinaryOperator *E) {
973   VisitExpr(E);
974   bool HasFPFeatures = E->hasStoredFPFeatures();
975   // Write this first for easy access when deserializing, as they affect the
976   // size of the UnaryOperator.
977   Record.push_back(HasFPFeatures);
978   Record.push_back(E->getOpcode()); // FIXME: stable encoding
979   Record.AddStmt(E->getLHS());
980   Record.AddStmt(E->getRHS());
981   Record.AddSourceLocation(E->getOperatorLoc());
982   if (HasFPFeatures)
983     Record.push_back(E->getStoredFPFeatures().getAsOpaqueInt());
984   Code = serialization::EXPR_BINARY_OPERATOR;
985 }
986 
987 void ASTStmtWriter::VisitCompoundAssignOperator(CompoundAssignOperator *E) {
988   VisitBinaryOperator(E);
989   Record.AddTypeRef(E->getComputationLHSType());
990   Record.AddTypeRef(E->getComputationResultType());
991   Code = serialization::EXPR_COMPOUND_ASSIGN_OPERATOR;
992 }
993 
994 void ASTStmtWriter::VisitConditionalOperator(ConditionalOperator *E) {
995   VisitExpr(E);
996   Record.AddStmt(E->getCond());
997   Record.AddStmt(E->getLHS());
998   Record.AddStmt(E->getRHS());
999   Record.AddSourceLocation(E->getQuestionLoc());
1000   Record.AddSourceLocation(E->getColonLoc());
1001   Code = serialization::EXPR_CONDITIONAL_OPERATOR;
1002 }
1003 
1004 void
1005 ASTStmtWriter::VisitBinaryConditionalOperator(BinaryConditionalOperator *E) {
1006   VisitExpr(E);
1007   Record.AddStmt(E->getOpaqueValue());
1008   Record.AddStmt(E->getCommon());
1009   Record.AddStmt(E->getCond());
1010   Record.AddStmt(E->getTrueExpr());
1011   Record.AddStmt(E->getFalseExpr());
1012   Record.AddSourceLocation(E->getQuestionLoc());
1013   Record.AddSourceLocation(E->getColonLoc());
1014   Code = serialization::EXPR_BINARY_CONDITIONAL_OPERATOR;
1015 }
1016 
1017 void ASTStmtWriter::VisitImplicitCastExpr(ImplicitCastExpr *E) {
1018   VisitCastExpr(E);
1019   Record.push_back(E->isPartOfExplicitCast());
1020 
1021   if (E->path_size() == 0 && !E->hasStoredFPFeatures())
1022     AbbrevToUse = Writer.getExprImplicitCastAbbrev();
1023 
1024   Code = serialization::EXPR_IMPLICIT_CAST;
1025 }
1026 
1027 void ASTStmtWriter::VisitExplicitCastExpr(ExplicitCastExpr *E) {
1028   VisitCastExpr(E);
1029   Record.AddTypeSourceInfo(E->getTypeInfoAsWritten());
1030 }
1031 
1032 void ASTStmtWriter::VisitCStyleCastExpr(CStyleCastExpr *E) {
1033   VisitExplicitCastExpr(E);
1034   Record.AddSourceLocation(E->getLParenLoc());
1035   Record.AddSourceLocation(E->getRParenLoc());
1036   Code = serialization::EXPR_CSTYLE_CAST;
1037 }
1038 
1039 void ASTStmtWriter::VisitCompoundLiteralExpr(CompoundLiteralExpr *E) {
1040   VisitExpr(E);
1041   Record.AddSourceLocation(E->getLParenLoc());
1042   Record.AddTypeSourceInfo(E->getTypeSourceInfo());
1043   Record.AddStmt(E->getInitializer());
1044   Record.push_back(E->isFileScope());
1045   Code = serialization::EXPR_COMPOUND_LITERAL;
1046 }
1047 
1048 void ASTStmtWriter::VisitExtVectorElementExpr(ExtVectorElementExpr *E) {
1049   VisitExpr(E);
1050   Record.AddStmt(E->getBase());
1051   Record.AddIdentifierRef(&E->getAccessor());
1052   Record.AddSourceLocation(E->getAccessorLoc());
1053   Code = serialization::EXPR_EXT_VECTOR_ELEMENT;
1054 }
1055 
1056 void ASTStmtWriter::VisitInitListExpr(InitListExpr *E) {
1057   VisitExpr(E);
1058   // NOTE: only add the (possibly null) syntactic form.
1059   // No need to serialize the isSemanticForm flag and the semantic form.
1060   Record.AddStmt(E->getSyntacticForm());
1061   Record.AddSourceLocation(E->getLBraceLoc());
1062   Record.AddSourceLocation(E->getRBraceLoc());
1063   bool isArrayFiller = E->ArrayFillerOrUnionFieldInit.is<Expr*>();
1064   Record.push_back(isArrayFiller);
1065   if (isArrayFiller)
1066     Record.AddStmt(E->getArrayFiller());
1067   else
1068     Record.AddDeclRef(E->getInitializedFieldInUnion());
1069   Record.push_back(E->hadArrayRangeDesignator());
1070   Record.push_back(E->getNumInits());
1071   if (isArrayFiller) {
1072     // ArrayFiller may have filled "holes" due to designated initializer.
1073     // Replace them by 0 to indicate that the filler goes in that place.
1074     Expr *filler = E->getArrayFiller();
1075     for (unsigned I = 0, N = E->getNumInits(); I != N; ++I)
1076       Record.AddStmt(E->getInit(I) != filler ? E->getInit(I) : nullptr);
1077   } else {
1078     for (unsigned I = 0, N = E->getNumInits(); I != N; ++I)
1079       Record.AddStmt(E->getInit(I));
1080   }
1081   Code = serialization::EXPR_INIT_LIST;
1082 }
1083 
1084 void ASTStmtWriter::VisitDesignatedInitExpr(DesignatedInitExpr *E) {
1085   VisitExpr(E);
1086   Record.push_back(E->getNumSubExprs());
1087   for (unsigned I = 0, N = E->getNumSubExprs(); I != N; ++I)
1088     Record.AddStmt(E->getSubExpr(I));
1089   Record.AddSourceLocation(E->getEqualOrColonLoc());
1090   Record.push_back(E->usesGNUSyntax());
1091   for (const DesignatedInitExpr::Designator &D : E->designators()) {
1092     if (D.isFieldDesignator()) {
1093       if (FieldDecl *Field = D.getField()) {
1094         Record.push_back(serialization::DESIG_FIELD_DECL);
1095         Record.AddDeclRef(Field);
1096       } else {
1097         Record.push_back(serialization::DESIG_FIELD_NAME);
1098         Record.AddIdentifierRef(D.getFieldName());
1099       }
1100       Record.AddSourceLocation(D.getDotLoc());
1101       Record.AddSourceLocation(D.getFieldLoc());
1102     } else if (D.isArrayDesignator()) {
1103       Record.push_back(serialization::DESIG_ARRAY);
1104       Record.push_back(D.getFirstExprIndex());
1105       Record.AddSourceLocation(D.getLBracketLoc());
1106       Record.AddSourceLocation(D.getRBracketLoc());
1107     } else {
1108       assert(D.isArrayRangeDesignator() && "Unknown designator");
1109       Record.push_back(serialization::DESIG_ARRAY_RANGE);
1110       Record.push_back(D.getFirstExprIndex());
1111       Record.AddSourceLocation(D.getLBracketLoc());
1112       Record.AddSourceLocation(D.getEllipsisLoc());
1113       Record.AddSourceLocation(D.getRBracketLoc());
1114     }
1115   }
1116   Code = serialization::EXPR_DESIGNATED_INIT;
1117 }
1118 
1119 void ASTStmtWriter::VisitDesignatedInitUpdateExpr(DesignatedInitUpdateExpr *E) {
1120   VisitExpr(E);
1121   Record.AddStmt(E->getBase());
1122   Record.AddStmt(E->getUpdater());
1123   Code = serialization::EXPR_DESIGNATED_INIT_UPDATE;
1124 }
1125 
1126 void ASTStmtWriter::VisitNoInitExpr(NoInitExpr *E) {
1127   VisitExpr(E);
1128   Code = serialization::EXPR_NO_INIT;
1129 }
1130 
1131 void ASTStmtWriter::VisitArrayInitLoopExpr(ArrayInitLoopExpr *E) {
1132   VisitExpr(E);
1133   Record.AddStmt(E->SubExprs[0]);
1134   Record.AddStmt(E->SubExprs[1]);
1135   Code = serialization::EXPR_ARRAY_INIT_LOOP;
1136 }
1137 
1138 void ASTStmtWriter::VisitArrayInitIndexExpr(ArrayInitIndexExpr *E) {
1139   VisitExpr(E);
1140   Code = serialization::EXPR_ARRAY_INIT_INDEX;
1141 }
1142 
1143 void ASTStmtWriter::VisitImplicitValueInitExpr(ImplicitValueInitExpr *E) {
1144   VisitExpr(E);
1145   Code = serialization::EXPR_IMPLICIT_VALUE_INIT;
1146 }
1147 
1148 void ASTStmtWriter::VisitVAArgExpr(VAArgExpr *E) {
1149   VisitExpr(E);
1150   Record.AddStmt(E->getSubExpr());
1151   Record.AddTypeSourceInfo(E->getWrittenTypeInfo());
1152   Record.AddSourceLocation(E->getBuiltinLoc());
1153   Record.AddSourceLocation(E->getRParenLoc());
1154   Record.push_back(E->isMicrosoftABI());
1155   Code = serialization::EXPR_VA_ARG;
1156 }
1157 
1158 void ASTStmtWriter::VisitSourceLocExpr(SourceLocExpr *E) {
1159   VisitExpr(E);
1160   Record.AddDeclRef(cast_or_null<Decl>(E->getParentContext()));
1161   Record.AddSourceLocation(E->getBeginLoc());
1162   Record.AddSourceLocation(E->getEndLoc());
1163   Record.push_back(E->getIdentKind());
1164   Code = serialization::EXPR_SOURCE_LOC;
1165 }
1166 
1167 void ASTStmtWriter::VisitAddrLabelExpr(AddrLabelExpr *E) {
1168   VisitExpr(E);
1169   Record.AddSourceLocation(E->getAmpAmpLoc());
1170   Record.AddSourceLocation(E->getLabelLoc());
1171   Record.AddDeclRef(E->getLabel());
1172   Code = serialization::EXPR_ADDR_LABEL;
1173 }
1174 
1175 void ASTStmtWriter::VisitStmtExpr(StmtExpr *E) {
1176   VisitExpr(E);
1177   Record.AddStmt(E->getSubStmt());
1178   Record.AddSourceLocation(E->getLParenLoc());
1179   Record.AddSourceLocation(E->getRParenLoc());
1180   Record.push_back(E->getTemplateDepth());
1181   Code = serialization::EXPR_STMT;
1182 }
1183 
1184 void ASTStmtWriter::VisitChooseExpr(ChooseExpr *E) {
1185   VisitExpr(E);
1186   Record.AddStmt(E->getCond());
1187   Record.AddStmt(E->getLHS());
1188   Record.AddStmt(E->getRHS());
1189   Record.AddSourceLocation(E->getBuiltinLoc());
1190   Record.AddSourceLocation(E->getRParenLoc());
1191   Record.push_back(E->isConditionDependent() ? false : E->isConditionTrue());
1192   Code = serialization::EXPR_CHOOSE;
1193 }
1194 
1195 void ASTStmtWriter::VisitGNUNullExpr(GNUNullExpr *E) {
1196   VisitExpr(E);
1197   Record.AddSourceLocation(E->getTokenLocation());
1198   Code = serialization::EXPR_GNU_NULL;
1199 }
1200 
1201 void ASTStmtWriter::VisitShuffleVectorExpr(ShuffleVectorExpr *E) {
1202   VisitExpr(E);
1203   Record.push_back(E->getNumSubExprs());
1204   for (unsigned I = 0, N = E->getNumSubExprs(); I != N; ++I)
1205     Record.AddStmt(E->getExpr(I));
1206   Record.AddSourceLocation(E->getBuiltinLoc());
1207   Record.AddSourceLocation(E->getRParenLoc());
1208   Code = serialization::EXPR_SHUFFLE_VECTOR;
1209 }
1210 
1211 void ASTStmtWriter::VisitConvertVectorExpr(ConvertVectorExpr *E) {
1212   VisitExpr(E);
1213   Record.AddSourceLocation(E->getBuiltinLoc());
1214   Record.AddSourceLocation(E->getRParenLoc());
1215   Record.AddTypeSourceInfo(E->getTypeSourceInfo());
1216   Record.AddStmt(E->getSrcExpr());
1217   Code = serialization::EXPR_CONVERT_VECTOR;
1218 }
1219 
1220 void ASTStmtWriter::VisitBlockExpr(BlockExpr *E) {
1221   VisitExpr(E);
1222   Record.AddDeclRef(E->getBlockDecl());
1223   Code = serialization::EXPR_BLOCK;
1224 }
1225 
1226 void ASTStmtWriter::VisitGenericSelectionExpr(GenericSelectionExpr *E) {
1227   VisitExpr(E);
1228 
1229   Record.push_back(E->getNumAssocs());
1230   Record.push_back(E->ResultIndex);
1231   Record.AddSourceLocation(E->getGenericLoc());
1232   Record.AddSourceLocation(E->getDefaultLoc());
1233   Record.AddSourceLocation(E->getRParenLoc());
1234 
1235   Stmt **Stmts = E->getTrailingObjects<Stmt *>();
1236   // Add 1 to account for the controlling expression which is the first
1237   // expression in the trailing array of Stmt *. This is not needed for
1238   // the trailing array of TypeSourceInfo *.
1239   for (unsigned I = 0, N = E->getNumAssocs() + 1; I < N; ++I)
1240     Record.AddStmt(Stmts[I]);
1241 
1242   TypeSourceInfo **TSIs = E->getTrailingObjects<TypeSourceInfo *>();
1243   for (unsigned I = 0, N = E->getNumAssocs(); I < N; ++I)
1244     Record.AddTypeSourceInfo(TSIs[I]);
1245 
1246   Code = serialization::EXPR_GENERIC_SELECTION;
1247 }
1248 
1249 void ASTStmtWriter::VisitPseudoObjectExpr(PseudoObjectExpr *E) {
1250   VisitExpr(E);
1251   Record.push_back(E->getNumSemanticExprs());
1252 
1253   // Push the result index.  Currently, this needs to exactly match
1254   // the encoding used internally for ResultIndex.
1255   unsigned result = E->getResultExprIndex();
1256   result = (result == PseudoObjectExpr::NoResult ? 0 : result + 1);
1257   Record.push_back(result);
1258 
1259   Record.AddStmt(E->getSyntacticForm());
1260   for (PseudoObjectExpr::semantics_iterator
1261          i = E->semantics_begin(), e = E->semantics_end(); i != e; ++i) {
1262     Record.AddStmt(*i);
1263   }
1264   Code = serialization::EXPR_PSEUDO_OBJECT;
1265 }
1266 
1267 void ASTStmtWriter::VisitAtomicExpr(AtomicExpr *E) {
1268   VisitExpr(E);
1269   Record.push_back(E->getOp());
1270   for (unsigned I = 0, N = E->getNumSubExprs(); I != N; ++I)
1271     Record.AddStmt(E->getSubExprs()[I]);
1272   Record.AddSourceLocation(E->getBuiltinLoc());
1273   Record.AddSourceLocation(E->getRParenLoc());
1274   Code = serialization::EXPR_ATOMIC;
1275 }
1276 
1277 //===----------------------------------------------------------------------===//
1278 // Objective-C Expressions and Statements.
1279 //===----------------------------------------------------------------------===//
1280 
1281 void ASTStmtWriter::VisitObjCStringLiteral(ObjCStringLiteral *E) {
1282   VisitExpr(E);
1283   Record.AddStmt(E->getString());
1284   Record.AddSourceLocation(E->getAtLoc());
1285   Code = serialization::EXPR_OBJC_STRING_LITERAL;
1286 }
1287 
1288 void ASTStmtWriter::VisitObjCBoxedExpr(ObjCBoxedExpr *E) {
1289   VisitExpr(E);
1290   Record.AddStmt(E->getSubExpr());
1291   Record.AddDeclRef(E->getBoxingMethod());
1292   Record.AddSourceRange(E->getSourceRange());
1293   Code = serialization::EXPR_OBJC_BOXED_EXPRESSION;
1294 }
1295 
1296 void ASTStmtWriter::VisitObjCArrayLiteral(ObjCArrayLiteral *E) {
1297   VisitExpr(E);
1298   Record.push_back(E->getNumElements());
1299   for (unsigned i = 0; i < E->getNumElements(); i++)
1300     Record.AddStmt(E->getElement(i));
1301   Record.AddDeclRef(E->getArrayWithObjectsMethod());
1302   Record.AddSourceRange(E->getSourceRange());
1303   Code = serialization::EXPR_OBJC_ARRAY_LITERAL;
1304 }
1305 
1306 void ASTStmtWriter::VisitObjCDictionaryLiteral(ObjCDictionaryLiteral *E) {
1307   VisitExpr(E);
1308   Record.push_back(E->getNumElements());
1309   Record.push_back(E->HasPackExpansions);
1310   for (unsigned i = 0; i < E->getNumElements(); i++) {
1311     ObjCDictionaryElement Element = E->getKeyValueElement(i);
1312     Record.AddStmt(Element.Key);
1313     Record.AddStmt(Element.Value);
1314     if (E->HasPackExpansions) {
1315       Record.AddSourceLocation(Element.EllipsisLoc);
1316       unsigned NumExpansions = 0;
1317       if (Element.NumExpansions)
1318         NumExpansions = *Element.NumExpansions + 1;
1319       Record.push_back(NumExpansions);
1320     }
1321   }
1322 
1323   Record.AddDeclRef(E->getDictWithObjectsMethod());
1324   Record.AddSourceRange(E->getSourceRange());
1325   Code = serialization::EXPR_OBJC_DICTIONARY_LITERAL;
1326 }
1327 
1328 void ASTStmtWriter::VisitObjCEncodeExpr(ObjCEncodeExpr *E) {
1329   VisitExpr(E);
1330   Record.AddTypeSourceInfo(E->getEncodedTypeSourceInfo());
1331   Record.AddSourceLocation(E->getAtLoc());
1332   Record.AddSourceLocation(E->getRParenLoc());
1333   Code = serialization::EXPR_OBJC_ENCODE;
1334 }
1335 
1336 void ASTStmtWriter::VisitObjCSelectorExpr(ObjCSelectorExpr *E) {
1337   VisitExpr(E);
1338   Record.AddSelectorRef(E->getSelector());
1339   Record.AddSourceLocation(E->getAtLoc());
1340   Record.AddSourceLocation(E->getRParenLoc());
1341   Code = serialization::EXPR_OBJC_SELECTOR_EXPR;
1342 }
1343 
1344 void ASTStmtWriter::VisitObjCProtocolExpr(ObjCProtocolExpr *E) {
1345   VisitExpr(E);
1346   Record.AddDeclRef(E->getProtocol());
1347   Record.AddSourceLocation(E->getAtLoc());
1348   Record.AddSourceLocation(E->ProtoLoc);
1349   Record.AddSourceLocation(E->getRParenLoc());
1350   Code = serialization::EXPR_OBJC_PROTOCOL_EXPR;
1351 }
1352 
1353 void ASTStmtWriter::VisitObjCIvarRefExpr(ObjCIvarRefExpr *E) {
1354   VisitExpr(E);
1355   Record.AddDeclRef(E->getDecl());
1356   Record.AddSourceLocation(E->getLocation());
1357   Record.AddSourceLocation(E->getOpLoc());
1358   Record.AddStmt(E->getBase());
1359   Record.push_back(E->isArrow());
1360   Record.push_back(E->isFreeIvar());
1361   Code = serialization::EXPR_OBJC_IVAR_REF_EXPR;
1362 }
1363 
1364 void ASTStmtWriter::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *E) {
1365   VisitExpr(E);
1366   Record.push_back(E->SetterAndMethodRefFlags.getInt());
1367   Record.push_back(E->isImplicitProperty());
1368   if (E->isImplicitProperty()) {
1369     Record.AddDeclRef(E->getImplicitPropertyGetter());
1370     Record.AddDeclRef(E->getImplicitPropertySetter());
1371   } else {
1372     Record.AddDeclRef(E->getExplicitProperty());
1373   }
1374   Record.AddSourceLocation(E->getLocation());
1375   Record.AddSourceLocation(E->getReceiverLocation());
1376   if (E->isObjectReceiver()) {
1377     Record.push_back(0);
1378     Record.AddStmt(E->getBase());
1379   } else if (E->isSuperReceiver()) {
1380     Record.push_back(1);
1381     Record.AddTypeRef(E->getSuperReceiverType());
1382   } else {
1383     Record.push_back(2);
1384     Record.AddDeclRef(E->getClassReceiver());
1385   }
1386 
1387   Code = serialization::EXPR_OBJC_PROPERTY_REF_EXPR;
1388 }
1389 
1390 void ASTStmtWriter::VisitObjCSubscriptRefExpr(ObjCSubscriptRefExpr *E) {
1391   VisitExpr(E);
1392   Record.AddSourceLocation(E->getRBracket());
1393   Record.AddStmt(E->getBaseExpr());
1394   Record.AddStmt(E->getKeyExpr());
1395   Record.AddDeclRef(E->getAtIndexMethodDecl());
1396   Record.AddDeclRef(E->setAtIndexMethodDecl());
1397 
1398   Code = serialization::EXPR_OBJC_SUBSCRIPT_REF_EXPR;
1399 }
1400 
1401 void ASTStmtWriter::VisitObjCMessageExpr(ObjCMessageExpr *E) {
1402   VisitExpr(E);
1403   Record.push_back(E->getNumArgs());
1404   Record.push_back(E->getNumStoredSelLocs());
1405   Record.push_back(E->SelLocsKind);
1406   Record.push_back(E->isDelegateInitCall());
1407   Record.push_back(E->IsImplicit);
1408   Record.push_back((unsigned)E->getReceiverKind()); // FIXME: stable encoding
1409   switch (E->getReceiverKind()) {
1410   case ObjCMessageExpr::Instance:
1411     Record.AddStmt(E->getInstanceReceiver());
1412     break;
1413 
1414   case ObjCMessageExpr::Class:
1415     Record.AddTypeSourceInfo(E->getClassReceiverTypeInfo());
1416     break;
1417 
1418   case ObjCMessageExpr::SuperClass:
1419   case ObjCMessageExpr::SuperInstance:
1420     Record.AddTypeRef(E->getSuperType());
1421     Record.AddSourceLocation(E->getSuperLoc());
1422     break;
1423   }
1424 
1425   if (E->getMethodDecl()) {
1426     Record.push_back(1);
1427     Record.AddDeclRef(E->getMethodDecl());
1428   } else {
1429     Record.push_back(0);
1430     Record.AddSelectorRef(E->getSelector());
1431   }
1432 
1433   Record.AddSourceLocation(E->getLeftLoc());
1434   Record.AddSourceLocation(E->getRightLoc());
1435 
1436   for (CallExpr::arg_iterator Arg = E->arg_begin(), ArgEnd = E->arg_end();
1437        Arg != ArgEnd; ++Arg)
1438     Record.AddStmt(*Arg);
1439 
1440   SourceLocation *Locs = E->getStoredSelLocs();
1441   for (unsigned i = 0, e = E->getNumStoredSelLocs(); i != e; ++i)
1442     Record.AddSourceLocation(Locs[i]);
1443 
1444   Code = serialization::EXPR_OBJC_MESSAGE_EXPR;
1445 }
1446 
1447 void ASTStmtWriter::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
1448   VisitStmt(S);
1449   Record.AddStmt(S->getElement());
1450   Record.AddStmt(S->getCollection());
1451   Record.AddStmt(S->getBody());
1452   Record.AddSourceLocation(S->getForLoc());
1453   Record.AddSourceLocation(S->getRParenLoc());
1454   Code = serialization::STMT_OBJC_FOR_COLLECTION;
1455 }
1456 
1457 void ASTStmtWriter::VisitObjCAtCatchStmt(ObjCAtCatchStmt *S) {
1458   VisitStmt(S);
1459   Record.AddStmt(S->getCatchBody());
1460   Record.AddDeclRef(S->getCatchParamDecl());
1461   Record.AddSourceLocation(S->getAtCatchLoc());
1462   Record.AddSourceLocation(S->getRParenLoc());
1463   Code = serialization::STMT_OBJC_CATCH;
1464 }
1465 
1466 void ASTStmtWriter::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S) {
1467   VisitStmt(S);
1468   Record.AddStmt(S->getFinallyBody());
1469   Record.AddSourceLocation(S->getAtFinallyLoc());
1470   Code = serialization::STMT_OBJC_FINALLY;
1471 }
1472 
1473 void ASTStmtWriter::VisitObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt *S) {
1474   VisitStmt(S); // FIXME: no test coverage.
1475   Record.AddStmt(S->getSubStmt());
1476   Record.AddSourceLocation(S->getAtLoc());
1477   Code = serialization::STMT_OBJC_AUTORELEASE_POOL;
1478 }
1479 
1480 void ASTStmtWriter::VisitObjCAtTryStmt(ObjCAtTryStmt *S) {
1481   VisitStmt(S);
1482   Record.push_back(S->getNumCatchStmts());
1483   Record.push_back(S->getFinallyStmt() != nullptr);
1484   Record.AddStmt(S->getTryBody());
1485   for (ObjCAtCatchStmt *C : S->catch_stmts())
1486     Record.AddStmt(C);
1487   if (S->getFinallyStmt())
1488     Record.AddStmt(S->getFinallyStmt());
1489   Record.AddSourceLocation(S->getAtTryLoc());
1490   Code = serialization::STMT_OBJC_AT_TRY;
1491 }
1492 
1493 void ASTStmtWriter::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
1494   VisitStmt(S); // FIXME: no test coverage.
1495   Record.AddStmt(S->getSynchExpr());
1496   Record.AddStmt(S->getSynchBody());
1497   Record.AddSourceLocation(S->getAtSynchronizedLoc());
1498   Code = serialization::STMT_OBJC_AT_SYNCHRONIZED;
1499 }
1500 
1501 void ASTStmtWriter::VisitObjCAtThrowStmt(ObjCAtThrowStmt *S) {
1502   VisitStmt(S); // FIXME: no test coverage.
1503   Record.AddStmt(S->getThrowExpr());
1504   Record.AddSourceLocation(S->getThrowLoc());
1505   Code = serialization::STMT_OBJC_AT_THROW;
1506 }
1507 
1508 void ASTStmtWriter::VisitObjCBoolLiteralExpr(ObjCBoolLiteralExpr *E) {
1509   VisitExpr(E);
1510   Record.push_back(E->getValue());
1511   Record.AddSourceLocation(E->getLocation());
1512   Code = serialization::EXPR_OBJC_BOOL_LITERAL;
1513 }
1514 
1515 void ASTStmtWriter::VisitObjCAvailabilityCheckExpr(ObjCAvailabilityCheckExpr *E) {
1516   VisitExpr(E);
1517   Record.AddSourceRange(E->getSourceRange());
1518   Record.AddVersionTuple(E->getVersion());
1519   Code = serialization::EXPR_OBJC_AVAILABILITY_CHECK;
1520 }
1521 
1522 //===----------------------------------------------------------------------===//
1523 // C++ Expressions and Statements.
1524 //===----------------------------------------------------------------------===//
1525 
1526 void ASTStmtWriter::VisitCXXCatchStmt(CXXCatchStmt *S) {
1527   VisitStmt(S);
1528   Record.AddSourceLocation(S->getCatchLoc());
1529   Record.AddDeclRef(S->getExceptionDecl());
1530   Record.AddStmt(S->getHandlerBlock());
1531   Code = serialization::STMT_CXX_CATCH;
1532 }
1533 
1534 void ASTStmtWriter::VisitCXXTryStmt(CXXTryStmt *S) {
1535   VisitStmt(S);
1536   Record.push_back(S->getNumHandlers());
1537   Record.AddSourceLocation(S->getTryLoc());
1538   Record.AddStmt(S->getTryBlock());
1539   for (unsigned i = 0, e = S->getNumHandlers(); i != e; ++i)
1540     Record.AddStmt(S->getHandler(i));
1541   Code = serialization::STMT_CXX_TRY;
1542 }
1543 
1544 void ASTStmtWriter::VisitCXXForRangeStmt(CXXForRangeStmt *S) {
1545   VisitStmt(S);
1546   Record.AddSourceLocation(S->getForLoc());
1547   Record.AddSourceLocation(S->getCoawaitLoc());
1548   Record.AddSourceLocation(S->getColonLoc());
1549   Record.AddSourceLocation(S->getRParenLoc());
1550   Record.AddStmt(S->getInit());
1551   Record.AddStmt(S->getRangeStmt());
1552   Record.AddStmt(S->getBeginStmt());
1553   Record.AddStmt(S->getEndStmt());
1554   Record.AddStmt(S->getCond());
1555   Record.AddStmt(S->getInc());
1556   Record.AddStmt(S->getLoopVarStmt());
1557   Record.AddStmt(S->getBody());
1558   Code = serialization::STMT_CXX_FOR_RANGE;
1559 }
1560 
1561 void ASTStmtWriter::VisitMSDependentExistsStmt(MSDependentExistsStmt *S) {
1562   VisitStmt(S);
1563   Record.AddSourceLocation(S->getKeywordLoc());
1564   Record.push_back(S->isIfExists());
1565   Record.AddNestedNameSpecifierLoc(S->getQualifierLoc());
1566   Record.AddDeclarationNameInfo(S->getNameInfo());
1567   Record.AddStmt(S->getSubStmt());
1568   Code = serialization::STMT_MS_DEPENDENT_EXISTS;
1569 }
1570 
1571 void ASTStmtWriter::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E) {
1572   VisitCallExpr(E);
1573   Record.push_back(E->getOperator());
1574   Record.AddSourceRange(E->Range);
1575   Code = serialization::EXPR_CXX_OPERATOR_CALL;
1576 }
1577 
1578 void ASTStmtWriter::VisitCXXMemberCallExpr(CXXMemberCallExpr *E) {
1579   VisitCallExpr(E);
1580   Code = serialization::EXPR_CXX_MEMBER_CALL;
1581 }
1582 
1583 void ASTStmtWriter::VisitCXXRewrittenBinaryOperator(
1584     CXXRewrittenBinaryOperator *E) {
1585   VisitExpr(E);
1586   Record.push_back(E->isReversed());
1587   Record.AddStmt(E->getSemanticForm());
1588   Code = serialization::EXPR_CXX_REWRITTEN_BINARY_OPERATOR;
1589 }
1590 
1591 void ASTStmtWriter::VisitCXXConstructExpr(CXXConstructExpr *E) {
1592   VisitExpr(E);
1593 
1594   Record.push_back(E->getNumArgs());
1595   Record.push_back(E->isElidable());
1596   Record.push_back(E->hadMultipleCandidates());
1597   Record.push_back(E->isListInitialization());
1598   Record.push_back(E->isStdInitListInitialization());
1599   Record.push_back(E->requiresZeroInitialization());
1600   Record.push_back(E->getConstructionKind()); // FIXME: stable encoding
1601   Record.AddSourceLocation(E->getLocation());
1602   Record.AddDeclRef(E->getConstructor());
1603   Record.AddSourceRange(E->getParenOrBraceRange());
1604 
1605   for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
1606     Record.AddStmt(E->getArg(I));
1607 
1608   Code = serialization::EXPR_CXX_CONSTRUCT;
1609 }
1610 
1611 void ASTStmtWriter::VisitCXXInheritedCtorInitExpr(CXXInheritedCtorInitExpr *E) {
1612   VisitExpr(E);
1613   Record.AddDeclRef(E->getConstructor());
1614   Record.AddSourceLocation(E->getLocation());
1615   Record.push_back(E->constructsVBase());
1616   Record.push_back(E->inheritedFromVBase());
1617   Code = serialization::EXPR_CXX_INHERITED_CTOR_INIT;
1618 }
1619 
1620 void ASTStmtWriter::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *E) {
1621   VisitCXXConstructExpr(E);
1622   Record.AddTypeSourceInfo(E->getTypeSourceInfo());
1623   Code = serialization::EXPR_CXX_TEMPORARY_OBJECT;
1624 }
1625 
1626 void ASTStmtWriter::VisitLambdaExpr(LambdaExpr *E) {
1627   VisitExpr(E);
1628   Record.push_back(E->LambdaExprBits.NumCaptures);
1629   Record.AddSourceRange(E->IntroducerRange);
1630   Record.push_back(E->LambdaExprBits.CaptureDefault); // FIXME: stable encoding
1631   Record.AddSourceLocation(E->CaptureDefaultLoc);
1632   Record.push_back(E->LambdaExprBits.ExplicitParams);
1633   Record.push_back(E->LambdaExprBits.ExplicitResultType);
1634   Record.AddSourceLocation(E->ClosingBrace);
1635 
1636   // Add capture initializers.
1637   for (LambdaExpr::capture_init_iterator C = E->capture_init_begin(),
1638                                       CEnd = E->capture_init_end();
1639        C != CEnd; ++C) {
1640     Record.AddStmt(*C);
1641   }
1642 
1643   // Don't serialize the body. It belongs to the call operator declaration.
1644   // LambdaExpr only stores a copy of the Stmt *.
1645 
1646   Code = serialization::EXPR_LAMBDA;
1647 }
1648 
1649 void ASTStmtWriter::VisitCXXStdInitializerListExpr(CXXStdInitializerListExpr *E) {
1650   VisitExpr(E);
1651   Record.AddStmt(E->getSubExpr());
1652   Code = serialization::EXPR_CXX_STD_INITIALIZER_LIST;
1653 }
1654 
1655 void ASTStmtWriter::VisitCXXNamedCastExpr(CXXNamedCastExpr *E) {
1656   VisitExplicitCastExpr(E);
1657   Record.AddSourceRange(SourceRange(E->getOperatorLoc(), E->getRParenLoc()));
1658   Record.AddSourceRange(E->getAngleBrackets());
1659 }
1660 
1661 void ASTStmtWriter::VisitCXXStaticCastExpr(CXXStaticCastExpr *E) {
1662   VisitCXXNamedCastExpr(E);
1663   Code = serialization::EXPR_CXX_STATIC_CAST;
1664 }
1665 
1666 void ASTStmtWriter::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *E) {
1667   VisitCXXNamedCastExpr(E);
1668   Code = serialization::EXPR_CXX_DYNAMIC_CAST;
1669 }
1670 
1671 void ASTStmtWriter::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *E) {
1672   VisitCXXNamedCastExpr(E);
1673   Code = serialization::EXPR_CXX_REINTERPRET_CAST;
1674 }
1675 
1676 void ASTStmtWriter::VisitCXXConstCastExpr(CXXConstCastExpr *E) {
1677   VisitCXXNamedCastExpr(E);
1678   Code = serialization::EXPR_CXX_CONST_CAST;
1679 }
1680 
1681 void ASTStmtWriter::VisitCXXAddrspaceCastExpr(CXXAddrspaceCastExpr *E) {
1682   VisitCXXNamedCastExpr(E);
1683   Code = serialization::EXPR_CXX_ADDRSPACE_CAST;
1684 }
1685 
1686 void ASTStmtWriter::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *E) {
1687   VisitExplicitCastExpr(E);
1688   Record.AddSourceLocation(E->getLParenLoc());
1689   Record.AddSourceLocation(E->getRParenLoc());
1690   Code = serialization::EXPR_CXX_FUNCTIONAL_CAST;
1691 }
1692 
1693 void ASTStmtWriter::VisitBuiltinBitCastExpr(BuiltinBitCastExpr *E) {
1694   VisitExplicitCastExpr(E);
1695   Record.AddSourceLocation(E->getBeginLoc());
1696   Record.AddSourceLocation(E->getEndLoc());
1697   Code = serialization::EXPR_BUILTIN_BIT_CAST;
1698 }
1699 
1700 void ASTStmtWriter::VisitUserDefinedLiteral(UserDefinedLiteral *E) {
1701   VisitCallExpr(E);
1702   Record.AddSourceLocation(E->UDSuffixLoc);
1703   Code = serialization::EXPR_USER_DEFINED_LITERAL;
1704 }
1705 
1706 void ASTStmtWriter::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *E) {
1707   VisitExpr(E);
1708   Record.push_back(E->getValue());
1709   Record.AddSourceLocation(E->getLocation());
1710   Code = serialization::EXPR_CXX_BOOL_LITERAL;
1711 }
1712 
1713 void ASTStmtWriter::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *E) {
1714   VisitExpr(E);
1715   Record.AddSourceLocation(E->getLocation());
1716   Code = serialization::EXPR_CXX_NULL_PTR_LITERAL;
1717 }
1718 
1719 void ASTStmtWriter::VisitCXXTypeidExpr(CXXTypeidExpr *E) {
1720   VisitExpr(E);
1721   Record.AddSourceRange(E->getSourceRange());
1722   if (E->isTypeOperand()) {
1723     Record.AddTypeSourceInfo(E->getTypeOperandSourceInfo());
1724     Code = serialization::EXPR_CXX_TYPEID_TYPE;
1725   } else {
1726     Record.AddStmt(E->getExprOperand());
1727     Code = serialization::EXPR_CXX_TYPEID_EXPR;
1728   }
1729 }
1730 
1731 void ASTStmtWriter::VisitCXXThisExpr(CXXThisExpr *E) {
1732   VisitExpr(E);
1733   Record.AddSourceLocation(E->getLocation());
1734   Record.push_back(E->isImplicit());
1735   Code = serialization::EXPR_CXX_THIS;
1736 }
1737 
1738 void ASTStmtWriter::VisitCXXThrowExpr(CXXThrowExpr *E) {
1739   VisitExpr(E);
1740   Record.AddSourceLocation(E->getThrowLoc());
1741   Record.AddStmt(E->getSubExpr());
1742   Record.push_back(E->isThrownVariableInScope());
1743   Code = serialization::EXPR_CXX_THROW;
1744 }
1745 
1746 void ASTStmtWriter::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *E) {
1747   VisitExpr(E);
1748   Record.AddDeclRef(E->getParam());
1749   Record.AddDeclRef(cast_or_null<Decl>(E->getUsedContext()));
1750   Record.AddSourceLocation(E->getUsedLocation());
1751   Code = serialization::EXPR_CXX_DEFAULT_ARG;
1752 }
1753 
1754 void ASTStmtWriter::VisitCXXDefaultInitExpr(CXXDefaultInitExpr *E) {
1755   VisitExpr(E);
1756   Record.AddDeclRef(E->getField());
1757   Record.AddDeclRef(cast_or_null<Decl>(E->getUsedContext()));
1758   Record.AddSourceLocation(E->getExprLoc());
1759   Code = serialization::EXPR_CXX_DEFAULT_INIT;
1760 }
1761 
1762 void ASTStmtWriter::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *E) {
1763   VisitExpr(E);
1764   Record.AddCXXTemporary(E->getTemporary());
1765   Record.AddStmt(E->getSubExpr());
1766   Code = serialization::EXPR_CXX_BIND_TEMPORARY;
1767 }
1768 
1769 void ASTStmtWriter::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E) {
1770   VisitExpr(E);
1771   Record.AddTypeSourceInfo(E->getTypeSourceInfo());
1772   Record.AddSourceLocation(E->getRParenLoc());
1773   Code = serialization::EXPR_CXX_SCALAR_VALUE_INIT;
1774 }
1775 
1776 void ASTStmtWriter::VisitCXXNewExpr(CXXNewExpr *E) {
1777   VisitExpr(E);
1778 
1779   Record.push_back(E->isArray());
1780   Record.push_back(E->hasInitializer());
1781   Record.push_back(E->getNumPlacementArgs());
1782   Record.push_back(E->isParenTypeId());
1783 
1784   Record.push_back(E->isGlobalNew());
1785   Record.push_back(E->passAlignment());
1786   Record.push_back(E->doesUsualArrayDeleteWantSize());
1787   Record.push_back(E->CXXNewExprBits.StoredInitializationStyle);
1788 
1789   Record.AddDeclRef(E->getOperatorNew());
1790   Record.AddDeclRef(E->getOperatorDelete());
1791   Record.AddTypeSourceInfo(E->getAllocatedTypeSourceInfo());
1792   if (E->isParenTypeId())
1793     Record.AddSourceRange(E->getTypeIdParens());
1794   Record.AddSourceRange(E->getSourceRange());
1795   Record.AddSourceRange(E->getDirectInitRange());
1796 
1797   for (CXXNewExpr::arg_iterator I = E->raw_arg_begin(), N = E->raw_arg_end();
1798        I != N; ++I)
1799     Record.AddStmt(*I);
1800 
1801   Code = serialization::EXPR_CXX_NEW;
1802 }
1803 
1804 void ASTStmtWriter::VisitCXXDeleteExpr(CXXDeleteExpr *E) {
1805   VisitExpr(E);
1806   Record.push_back(E->isGlobalDelete());
1807   Record.push_back(E->isArrayForm());
1808   Record.push_back(E->isArrayFormAsWritten());
1809   Record.push_back(E->doesUsualArrayDeleteWantSize());
1810   Record.AddDeclRef(E->getOperatorDelete());
1811   Record.AddStmt(E->getArgument());
1812   Record.AddSourceLocation(E->getBeginLoc());
1813 
1814   Code = serialization::EXPR_CXX_DELETE;
1815 }
1816 
1817 void ASTStmtWriter::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E) {
1818   VisitExpr(E);
1819 
1820   Record.AddStmt(E->getBase());
1821   Record.push_back(E->isArrow());
1822   Record.AddSourceLocation(E->getOperatorLoc());
1823   Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
1824   Record.AddTypeSourceInfo(E->getScopeTypeInfo());
1825   Record.AddSourceLocation(E->getColonColonLoc());
1826   Record.AddSourceLocation(E->getTildeLoc());
1827 
1828   // PseudoDestructorTypeStorage.
1829   Record.AddIdentifierRef(E->getDestroyedTypeIdentifier());
1830   if (E->getDestroyedTypeIdentifier())
1831     Record.AddSourceLocation(E->getDestroyedTypeLoc());
1832   else
1833     Record.AddTypeSourceInfo(E->getDestroyedTypeInfo());
1834 
1835   Code = serialization::EXPR_CXX_PSEUDO_DESTRUCTOR;
1836 }
1837 
1838 void ASTStmtWriter::VisitExprWithCleanups(ExprWithCleanups *E) {
1839   VisitExpr(E);
1840   Record.push_back(E->getNumObjects());
1841   for (auto &Obj : E->getObjects()) {
1842     if (auto *BD = Obj.dyn_cast<BlockDecl *>()) {
1843       Record.push_back(serialization::COK_Block);
1844       Record.AddDeclRef(BD);
1845     } else if (auto *CLE = Obj.dyn_cast<CompoundLiteralExpr *>()) {
1846       Record.push_back(serialization::COK_CompoundLiteral);
1847       Record.AddStmt(CLE);
1848     }
1849   }
1850 
1851   Record.push_back(E->cleanupsHaveSideEffects());
1852   Record.AddStmt(E->getSubExpr());
1853   Code = serialization::EXPR_EXPR_WITH_CLEANUPS;
1854 }
1855 
1856 void ASTStmtWriter::VisitCXXDependentScopeMemberExpr(
1857     CXXDependentScopeMemberExpr *E) {
1858   VisitExpr(E);
1859 
1860   // Don't emit anything here (or if you do you will have to update
1861   // the corresponding deserialization function).
1862 
1863   Record.push_back(E->hasTemplateKWAndArgsInfo());
1864   Record.push_back(E->getNumTemplateArgs());
1865   Record.push_back(E->hasFirstQualifierFoundInScope());
1866 
1867   if (E->hasTemplateKWAndArgsInfo()) {
1868     const ASTTemplateKWAndArgsInfo &ArgInfo =
1869         *E->getTrailingObjects<ASTTemplateKWAndArgsInfo>();
1870     AddTemplateKWAndArgsInfo(ArgInfo,
1871                              E->getTrailingObjects<TemplateArgumentLoc>());
1872   }
1873 
1874   Record.push_back(E->isArrow());
1875   Record.AddSourceLocation(E->getOperatorLoc());
1876   Record.AddTypeRef(E->getBaseType());
1877   Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
1878   if (!E->isImplicitAccess())
1879     Record.AddStmt(E->getBase());
1880   else
1881     Record.AddStmt(nullptr);
1882 
1883   if (E->hasFirstQualifierFoundInScope())
1884     Record.AddDeclRef(E->getFirstQualifierFoundInScope());
1885 
1886   Record.AddDeclarationNameInfo(E->MemberNameInfo);
1887   Code = serialization::EXPR_CXX_DEPENDENT_SCOPE_MEMBER;
1888 }
1889 
1890 void
1891 ASTStmtWriter::VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *E) {
1892   VisitExpr(E);
1893 
1894   // Don't emit anything here, HasTemplateKWAndArgsInfo must be
1895   // emitted first.
1896 
1897   Record.push_back(E->DependentScopeDeclRefExprBits.HasTemplateKWAndArgsInfo);
1898   if (E->DependentScopeDeclRefExprBits.HasTemplateKWAndArgsInfo) {
1899     const ASTTemplateKWAndArgsInfo &ArgInfo =
1900         *E->getTrailingObjects<ASTTemplateKWAndArgsInfo>();
1901     Record.push_back(ArgInfo.NumTemplateArgs);
1902     AddTemplateKWAndArgsInfo(ArgInfo,
1903                              E->getTrailingObjects<TemplateArgumentLoc>());
1904   }
1905 
1906   Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
1907   Record.AddDeclarationNameInfo(E->NameInfo);
1908   Code = serialization::EXPR_CXX_DEPENDENT_SCOPE_DECL_REF;
1909 }
1910 
1911 void
1912 ASTStmtWriter::VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *E) {
1913   VisitExpr(E);
1914   Record.push_back(E->getNumArgs());
1915   for (CXXUnresolvedConstructExpr::arg_iterator
1916          ArgI = E->arg_begin(), ArgE = E->arg_end(); ArgI != ArgE; ++ArgI)
1917     Record.AddStmt(*ArgI);
1918   Record.AddTypeSourceInfo(E->getTypeSourceInfo());
1919   Record.AddSourceLocation(E->getLParenLoc());
1920   Record.AddSourceLocation(E->getRParenLoc());
1921   Code = serialization::EXPR_CXX_UNRESOLVED_CONSTRUCT;
1922 }
1923 
1924 void ASTStmtWriter::VisitOverloadExpr(OverloadExpr *E) {
1925   VisitExpr(E);
1926 
1927   Record.push_back(E->getNumDecls());
1928   Record.push_back(E->hasTemplateKWAndArgsInfo());
1929   if (E->hasTemplateKWAndArgsInfo()) {
1930     const ASTTemplateKWAndArgsInfo &ArgInfo =
1931         *E->getTrailingASTTemplateKWAndArgsInfo();
1932     Record.push_back(ArgInfo.NumTemplateArgs);
1933     AddTemplateKWAndArgsInfo(ArgInfo, E->getTrailingTemplateArgumentLoc());
1934   }
1935 
1936   for (OverloadExpr::decls_iterator OvI = E->decls_begin(),
1937                                     OvE = E->decls_end();
1938        OvI != OvE; ++OvI) {
1939     Record.AddDeclRef(OvI.getDecl());
1940     Record.push_back(OvI.getAccess());
1941   }
1942 
1943   Record.AddDeclarationNameInfo(E->getNameInfo());
1944   Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
1945 }
1946 
1947 void ASTStmtWriter::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *E) {
1948   VisitOverloadExpr(E);
1949   Record.push_back(E->isArrow());
1950   Record.push_back(E->hasUnresolvedUsing());
1951   Record.AddStmt(!E->isImplicitAccess() ? E->getBase() : nullptr);
1952   Record.AddTypeRef(E->getBaseType());
1953   Record.AddSourceLocation(E->getOperatorLoc());
1954   Code = serialization::EXPR_CXX_UNRESOLVED_MEMBER;
1955 }
1956 
1957 void ASTStmtWriter::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *E) {
1958   VisitOverloadExpr(E);
1959   Record.push_back(E->requiresADL());
1960   Record.push_back(E->isOverloaded());
1961   Record.AddDeclRef(E->getNamingClass());
1962   Code = serialization::EXPR_CXX_UNRESOLVED_LOOKUP;
1963 }
1964 
1965 void ASTStmtWriter::VisitTypeTraitExpr(TypeTraitExpr *E) {
1966   VisitExpr(E);
1967   Record.push_back(E->TypeTraitExprBits.NumArgs);
1968   Record.push_back(E->TypeTraitExprBits.Kind); // FIXME: Stable encoding
1969   Record.push_back(E->TypeTraitExprBits.Value);
1970   Record.AddSourceRange(E->getSourceRange());
1971   for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
1972     Record.AddTypeSourceInfo(E->getArg(I));
1973   Code = serialization::EXPR_TYPE_TRAIT;
1974 }
1975 
1976 void ASTStmtWriter::VisitArrayTypeTraitExpr(ArrayTypeTraitExpr *E) {
1977   VisitExpr(E);
1978   Record.push_back(E->getTrait());
1979   Record.push_back(E->getValue());
1980   Record.AddSourceRange(E->getSourceRange());
1981   Record.AddTypeSourceInfo(E->getQueriedTypeSourceInfo());
1982   Record.AddStmt(E->getDimensionExpression());
1983   Code = serialization::EXPR_ARRAY_TYPE_TRAIT;
1984 }
1985 
1986 void ASTStmtWriter::VisitExpressionTraitExpr(ExpressionTraitExpr *E) {
1987   VisitExpr(E);
1988   Record.push_back(E->getTrait());
1989   Record.push_back(E->getValue());
1990   Record.AddSourceRange(E->getSourceRange());
1991   Record.AddStmt(E->getQueriedExpression());
1992   Code = serialization::EXPR_CXX_EXPRESSION_TRAIT;
1993 }
1994 
1995 void ASTStmtWriter::VisitCXXNoexceptExpr(CXXNoexceptExpr *E) {
1996   VisitExpr(E);
1997   Record.push_back(E->getValue());
1998   Record.AddSourceRange(E->getSourceRange());
1999   Record.AddStmt(E->getOperand());
2000   Code = serialization::EXPR_CXX_NOEXCEPT;
2001 }
2002 
2003 void ASTStmtWriter::VisitPackExpansionExpr(PackExpansionExpr *E) {
2004   VisitExpr(E);
2005   Record.AddSourceLocation(E->getEllipsisLoc());
2006   Record.push_back(E->NumExpansions);
2007   Record.AddStmt(E->getPattern());
2008   Code = serialization::EXPR_PACK_EXPANSION;
2009 }
2010 
2011 void ASTStmtWriter::VisitSizeOfPackExpr(SizeOfPackExpr *E) {
2012   VisitExpr(E);
2013   Record.push_back(E->isPartiallySubstituted() ? E->getPartialArguments().size()
2014                                                : 0);
2015   Record.AddSourceLocation(E->OperatorLoc);
2016   Record.AddSourceLocation(E->PackLoc);
2017   Record.AddSourceLocation(E->RParenLoc);
2018   Record.AddDeclRef(E->Pack);
2019   if (E->isPartiallySubstituted()) {
2020     for (const auto &TA : E->getPartialArguments())
2021       Record.AddTemplateArgument(TA);
2022   } else if (!E->isValueDependent()) {
2023     Record.push_back(E->getPackLength());
2024   }
2025   Code = serialization::EXPR_SIZEOF_PACK;
2026 }
2027 
2028 void ASTStmtWriter::VisitSubstNonTypeTemplateParmExpr(
2029                                               SubstNonTypeTemplateParmExpr *E) {
2030   VisitExpr(E);
2031   Record.AddDeclRef(E->getParameter());
2032   Record.push_back(E->isReferenceParameter());
2033   Record.AddSourceLocation(E->getNameLoc());
2034   Record.AddStmt(E->getReplacement());
2035   Code = serialization::EXPR_SUBST_NON_TYPE_TEMPLATE_PARM;
2036 }
2037 
2038 void ASTStmtWriter::VisitSubstNonTypeTemplateParmPackExpr(
2039                                           SubstNonTypeTemplateParmPackExpr *E) {
2040   VisitExpr(E);
2041   Record.AddDeclRef(E->getParameterPack());
2042   Record.AddTemplateArgument(E->getArgumentPack());
2043   Record.AddSourceLocation(E->getParameterPackLocation());
2044   Code = serialization::EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK;
2045 }
2046 
2047 void ASTStmtWriter::VisitFunctionParmPackExpr(FunctionParmPackExpr *E) {
2048   VisitExpr(E);
2049   Record.push_back(E->getNumExpansions());
2050   Record.AddDeclRef(E->getParameterPack());
2051   Record.AddSourceLocation(E->getParameterPackLocation());
2052   for (FunctionParmPackExpr::iterator I = E->begin(), End = E->end();
2053        I != End; ++I)
2054     Record.AddDeclRef(*I);
2055   Code = serialization::EXPR_FUNCTION_PARM_PACK;
2056 }
2057 
2058 void ASTStmtWriter::VisitMaterializeTemporaryExpr(MaterializeTemporaryExpr *E) {
2059   VisitExpr(E);
2060   Record.push_back(static_cast<bool>(E->getLifetimeExtendedTemporaryDecl()));
2061   if (E->getLifetimeExtendedTemporaryDecl())
2062     Record.AddDeclRef(E->getLifetimeExtendedTemporaryDecl());
2063   else
2064     Record.AddStmt(E->getSubExpr());
2065   Code = serialization::EXPR_MATERIALIZE_TEMPORARY;
2066 }
2067 
2068 void ASTStmtWriter::VisitCXXFoldExpr(CXXFoldExpr *E) {
2069   VisitExpr(E);
2070   Record.AddSourceLocation(E->LParenLoc);
2071   Record.AddSourceLocation(E->EllipsisLoc);
2072   Record.AddSourceLocation(E->RParenLoc);
2073   Record.push_back(E->NumExpansions);
2074   Record.AddStmt(E->SubExprs[0]);
2075   Record.AddStmt(E->SubExprs[1]);
2076   Record.AddStmt(E->SubExprs[2]);
2077   Record.push_back(E->Opcode);
2078   Code = serialization::EXPR_CXX_FOLD;
2079 }
2080 
2081 void ASTStmtWriter::VisitOpaqueValueExpr(OpaqueValueExpr *E) {
2082   VisitExpr(E);
2083   Record.AddStmt(E->getSourceExpr());
2084   Record.AddSourceLocation(E->getLocation());
2085   Record.push_back(E->isUnique());
2086   Code = serialization::EXPR_OPAQUE_VALUE;
2087 }
2088 
2089 void ASTStmtWriter::VisitTypoExpr(TypoExpr *E) {
2090   VisitExpr(E);
2091   // TODO: Figure out sane writer behavior for a TypoExpr, if necessary
2092   llvm_unreachable("Cannot write TypoExpr nodes");
2093 }
2094 
2095 //===----------------------------------------------------------------------===//
2096 // CUDA Expressions and Statements.
2097 //===----------------------------------------------------------------------===//
2098 
2099 void ASTStmtWriter::VisitCUDAKernelCallExpr(CUDAKernelCallExpr *E) {
2100   VisitCallExpr(E);
2101   Record.AddStmt(E->getConfig());
2102   Code = serialization::EXPR_CUDA_KERNEL_CALL;
2103 }
2104 
2105 //===----------------------------------------------------------------------===//
2106 // OpenCL Expressions and Statements.
2107 //===----------------------------------------------------------------------===//
2108 void ASTStmtWriter::VisitAsTypeExpr(AsTypeExpr *E) {
2109   VisitExpr(E);
2110   Record.AddSourceLocation(E->getBuiltinLoc());
2111   Record.AddSourceLocation(E->getRParenLoc());
2112   Record.AddStmt(E->getSrcExpr());
2113   Code = serialization::EXPR_ASTYPE;
2114 }
2115 
2116 //===----------------------------------------------------------------------===//
2117 // Microsoft Expressions and Statements.
2118 //===----------------------------------------------------------------------===//
2119 void ASTStmtWriter::VisitMSPropertyRefExpr(MSPropertyRefExpr *E) {
2120   VisitExpr(E);
2121   Record.push_back(E->isArrow());
2122   Record.AddStmt(E->getBaseExpr());
2123   Record.AddNestedNameSpecifierLoc(E->getQualifierLoc());
2124   Record.AddSourceLocation(E->getMemberLoc());
2125   Record.AddDeclRef(E->getPropertyDecl());
2126   Code = serialization::EXPR_CXX_PROPERTY_REF_EXPR;
2127 }
2128 
2129 void ASTStmtWriter::VisitMSPropertySubscriptExpr(MSPropertySubscriptExpr *E) {
2130   VisitExpr(E);
2131   Record.AddStmt(E->getBase());
2132   Record.AddStmt(E->getIdx());
2133   Record.AddSourceLocation(E->getRBracketLoc());
2134   Code = serialization::EXPR_CXX_PROPERTY_SUBSCRIPT_EXPR;
2135 }
2136 
2137 void ASTStmtWriter::VisitCXXUuidofExpr(CXXUuidofExpr *E) {
2138   VisitExpr(E);
2139   Record.AddSourceRange(E->getSourceRange());
2140   Record.AddDeclRef(E->getGuidDecl());
2141   if (E->isTypeOperand()) {
2142     Record.AddTypeSourceInfo(E->getTypeOperandSourceInfo());
2143     Code = serialization::EXPR_CXX_UUIDOF_TYPE;
2144   } else {
2145     Record.AddStmt(E->getExprOperand());
2146     Code = serialization::EXPR_CXX_UUIDOF_EXPR;
2147   }
2148 }
2149 
2150 void ASTStmtWriter::VisitSEHExceptStmt(SEHExceptStmt *S) {
2151   VisitStmt(S);
2152   Record.AddSourceLocation(S->getExceptLoc());
2153   Record.AddStmt(S->getFilterExpr());
2154   Record.AddStmt(S->getBlock());
2155   Code = serialization::STMT_SEH_EXCEPT;
2156 }
2157 
2158 void ASTStmtWriter::VisitSEHFinallyStmt(SEHFinallyStmt *S) {
2159   VisitStmt(S);
2160   Record.AddSourceLocation(S->getFinallyLoc());
2161   Record.AddStmt(S->getBlock());
2162   Code = serialization::STMT_SEH_FINALLY;
2163 }
2164 
2165 void ASTStmtWriter::VisitSEHTryStmt(SEHTryStmt *S) {
2166   VisitStmt(S);
2167   Record.push_back(S->getIsCXXTry());
2168   Record.AddSourceLocation(S->getTryLoc());
2169   Record.AddStmt(S->getTryBlock());
2170   Record.AddStmt(S->getHandler());
2171   Code = serialization::STMT_SEH_TRY;
2172 }
2173 
2174 void ASTStmtWriter::VisitSEHLeaveStmt(SEHLeaveStmt *S) {
2175   VisitStmt(S);
2176   Record.AddSourceLocation(S->getLeaveLoc());
2177   Code = serialization::STMT_SEH_LEAVE;
2178 }
2179 
2180 //===----------------------------------------------------------------------===//
2181 // OpenMP Directives.
2182 //===----------------------------------------------------------------------===//
2183 
2184 void ASTStmtWriter::VisitOMPCanonicalLoop(OMPCanonicalLoop *S) {
2185   VisitStmt(S);
2186   for (Stmt *SubStmt : S->SubStmts)
2187     Record.AddStmt(SubStmt);
2188   Code = serialization::STMT_OMP_CANONICAL_LOOP;
2189 }
2190 
2191 void ASTStmtWriter::VisitOMPExecutableDirective(OMPExecutableDirective *E) {
2192   Record.writeOMPChildren(E->Data);
2193   Record.AddSourceLocation(E->getBeginLoc());
2194   Record.AddSourceLocation(E->getEndLoc());
2195 }
2196 
2197 void ASTStmtWriter::VisitOMPLoopBasedDirective(OMPLoopBasedDirective *D) {
2198   VisitStmt(D);
2199   Record.writeUInt32(D->getLoopsNumber());
2200   VisitOMPExecutableDirective(D);
2201 }
2202 
2203 void ASTStmtWriter::VisitOMPLoopDirective(OMPLoopDirective *D) {
2204   VisitOMPLoopBasedDirective(D);
2205 }
2206 
2207 void ASTStmtWriter::VisitOMPMetaDirective(OMPMetaDirective *D) {
2208   VisitStmt(D);
2209   Record.push_back(D->getNumClauses());
2210   VisitOMPExecutableDirective(D);
2211   Code = serialization::STMT_OMP_META_DIRECTIVE;
2212 }
2213 
2214 void ASTStmtWriter::VisitOMPParallelDirective(OMPParallelDirective *D) {
2215   VisitStmt(D);
2216   VisitOMPExecutableDirective(D);
2217   Record.writeBool(D->hasCancel());
2218   Code = serialization::STMT_OMP_PARALLEL_DIRECTIVE;
2219 }
2220 
2221 void ASTStmtWriter::VisitOMPSimdDirective(OMPSimdDirective *D) {
2222   VisitOMPLoopDirective(D);
2223   Code = serialization::STMT_OMP_SIMD_DIRECTIVE;
2224 }
2225 
2226 void ASTStmtWriter::VisitOMPLoopTransformationDirective(
2227     OMPLoopTransformationDirective *D) {
2228   VisitOMPLoopBasedDirective(D);
2229   Record.writeUInt32(D->getNumGeneratedLoops());
2230 }
2231 
2232 void ASTStmtWriter::VisitOMPTileDirective(OMPTileDirective *D) {
2233   VisitOMPLoopTransformationDirective(D);
2234   Code = serialization::STMT_OMP_TILE_DIRECTIVE;
2235 }
2236 
2237 void ASTStmtWriter::VisitOMPUnrollDirective(OMPUnrollDirective *D) {
2238   VisitOMPLoopTransformationDirective(D);
2239   Code = serialization::STMT_OMP_UNROLL_DIRECTIVE;
2240 }
2241 
2242 void ASTStmtWriter::VisitOMPForDirective(OMPForDirective *D) {
2243   VisitOMPLoopDirective(D);
2244   Record.writeBool(D->hasCancel());
2245   Code = serialization::STMT_OMP_FOR_DIRECTIVE;
2246 }
2247 
2248 void ASTStmtWriter::VisitOMPForSimdDirective(OMPForSimdDirective *D) {
2249   VisitOMPLoopDirective(D);
2250   Code = serialization::STMT_OMP_FOR_SIMD_DIRECTIVE;
2251 }
2252 
2253 void ASTStmtWriter::VisitOMPSectionsDirective(OMPSectionsDirective *D) {
2254   VisitStmt(D);
2255   VisitOMPExecutableDirective(D);
2256   Record.writeBool(D->hasCancel());
2257   Code = serialization::STMT_OMP_SECTIONS_DIRECTIVE;
2258 }
2259 
2260 void ASTStmtWriter::VisitOMPSectionDirective(OMPSectionDirective *D) {
2261   VisitStmt(D);
2262   VisitOMPExecutableDirective(D);
2263   Record.writeBool(D->hasCancel());
2264   Code = serialization::STMT_OMP_SECTION_DIRECTIVE;
2265 }
2266 
2267 void ASTStmtWriter::VisitOMPSingleDirective(OMPSingleDirective *D) {
2268   VisitStmt(D);
2269   VisitOMPExecutableDirective(D);
2270   Code = serialization::STMT_OMP_SINGLE_DIRECTIVE;
2271 }
2272 
2273 void ASTStmtWriter::VisitOMPMasterDirective(OMPMasterDirective *D) {
2274   VisitStmt(D);
2275   VisitOMPExecutableDirective(D);
2276   Code = serialization::STMT_OMP_MASTER_DIRECTIVE;
2277 }
2278 
2279 void ASTStmtWriter::VisitOMPCriticalDirective(OMPCriticalDirective *D) {
2280   VisitStmt(D);
2281   VisitOMPExecutableDirective(D);
2282   Record.AddDeclarationNameInfo(D->getDirectiveName());
2283   Code = serialization::STMT_OMP_CRITICAL_DIRECTIVE;
2284 }
2285 
2286 void ASTStmtWriter::VisitOMPParallelForDirective(OMPParallelForDirective *D) {
2287   VisitOMPLoopDirective(D);
2288   Record.writeBool(D->hasCancel());
2289   Code = serialization::STMT_OMP_PARALLEL_FOR_DIRECTIVE;
2290 }
2291 
2292 void ASTStmtWriter::VisitOMPParallelForSimdDirective(
2293     OMPParallelForSimdDirective *D) {
2294   VisitOMPLoopDirective(D);
2295   Code = serialization::STMT_OMP_PARALLEL_FOR_SIMD_DIRECTIVE;
2296 }
2297 
2298 void ASTStmtWriter::VisitOMPParallelMasterDirective(
2299     OMPParallelMasterDirective *D) {
2300   VisitStmt(D);
2301   VisitOMPExecutableDirective(D);
2302   Code = serialization::STMT_OMP_PARALLEL_MASTER_DIRECTIVE;
2303 }
2304 
2305 void ASTStmtWriter::VisitOMPParallelSectionsDirective(
2306     OMPParallelSectionsDirective *D) {
2307   VisitStmt(D);
2308   VisitOMPExecutableDirective(D);
2309   Record.writeBool(D->hasCancel());
2310   Code = serialization::STMT_OMP_PARALLEL_SECTIONS_DIRECTIVE;
2311 }
2312 
2313 void ASTStmtWriter::VisitOMPTaskDirective(OMPTaskDirective *D) {
2314   VisitStmt(D);
2315   VisitOMPExecutableDirective(D);
2316   Record.writeBool(D->hasCancel());
2317   Code = serialization::STMT_OMP_TASK_DIRECTIVE;
2318 }
2319 
2320 void ASTStmtWriter::VisitOMPAtomicDirective(OMPAtomicDirective *D) {
2321   VisitStmt(D);
2322   VisitOMPExecutableDirective(D);
2323   Record.writeBool(D->isXLHSInRHSPart());
2324   Record.writeBool(D->isPostfixUpdate());
2325   Code = serialization::STMT_OMP_ATOMIC_DIRECTIVE;
2326 }
2327 
2328 void ASTStmtWriter::VisitOMPTargetDirective(OMPTargetDirective *D) {
2329   VisitStmt(D);
2330   VisitOMPExecutableDirective(D);
2331   Code = serialization::STMT_OMP_TARGET_DIRECTIVE;
2332 }
2333 
2334 void ASTStmtWriter::VisitOMPTargetDataDirective(OMPTargetDataDirective *D) {
2335   VisitStmt(D);
2336   VisitOMPExecutableDirective(D);
2337   Code = serialization::STMT_OMP_TARGET_DATA_DIRECTIVE;
2338 }
2339 
2340 void ASTStmtWriter::VisitOMPTargetEnterDataDirective(
2341     OMPTargetEnterDataDirective *D) {
2342   VisitStmt(D);
2343   VisitOMPExecutableDirective(D);
2344   Code = serialization::STMT_OMP_TARGET_ENTER_DATA_DIRECTIVE;
2345 }
2346 
2347 void ASTStmtWriter::VisitOMPTargetExitDataDirective(
2348     OMPTargetExitDataDirective *D) {
2349   VisitStmt(D);
2350   VisitOMPExecutableDirective(D);
2351   Code = serialization::STMT_OMP_TARGET_EXIT_DATA_DIRECTIVE;
2352 }
2353 
2354 void ASTStmtWriter::VisitOMPTargetParallelDirective(
2355     OMPTargetParallelDirective *D) {
2356   VisitStmt(D);
2357   VisitOMPExecutableDirective(D);
2358   Record.writeBool(D->hasCancel());
2359   Code = serialization::STMT_OMP_TARGET_PARALLEL_DIRECTIVE;
2360 }
2361 
2362 void ASTStmtWriter::VisitOMPTargetParallelForDirective(
2363     OMPTargetParallelForDirective *D) {
2364   VisitOMPLoopDirective(D);
2365   Record.writeBool(D->hasCancel());
2366   Code = serialization::STMT_OMP_TARGET_PARALLEL_FOR_DIRECTIVE;
2367 }
2368 
2369 void ASTStmtWriter::VisitOMPTaskyieldDirective(OMPTaskyieldDirective *D) {
2370   VisitStmt(D);
2371   VisitOMPExecutableDirective(D);
2372   Code = serialization::STMT_OMP_TASKYIELD_DIRECTIVE;
2373 }
2374 
2375 void ASTStmtWriter::VisitOMPBarrierDirective(OMPBarrierDirective *D) {
2376   VisitStmt(D);
2377   VisitOMPExecutableDirective(D);
2378   Code = serialization::STMT_OMP_BARRIER_DIRECTIVE;
2379 }
2380 
2381 void ASTStmtWriter::VisitOMPTaskwaitDirective(OMPTaskwaitDirective *D) {
2382   VisitStmt(D);
2383   Record.push_back(D->getNumClauses());
2384   VisitOMPExecutableDirective(D);
2385   Code = serialization::STMT_OMP_TASKWAIT_DIRECTIVE;
2386 }
2387 
2388 void ASTStmtWriter::VisitOMPTaskgroupDirective(OMPTaskgroupDirective *D) {
2389   VisitStmt(D);
2390   VisitOMPExecutableDirective(D);
2391   Code = serialization::STMT_OMP_TASKGROUP_DIRECTIVE;
2392 }
2393 
2394 void ASTStmtWriter::VisitOMPFlushDirective(OMPFlushDirective *D) {
2395   VisitStmt(D);
2396   VisitOMPExecutableDirective(D);
2397   Code = serialization::STMT_OMP_FLUSH_DIRECTIVE;
2398 }
2399 
2400 void ASTStmtWriter::VisitOMPDepobjDirective(OMPDepobjDirective *D) {
2401   VisitStmt(D);
2402   VisitOMPExecutableDirective(D);
2403   Code = serialization::STMT_OMP_DEPOBJ_DIRECTIVE;
2404 }
2405 
2406 void ASTStmtWriter::VisitOMPScanDirective(OMPScanDirective *D) {
2407   VisitStmt(D);
2408   VisitOMPExecutableDirective(D);
2409   Code = serialization::STMT_OMP_SCAN_DIRECTIVE;
2410 }
2411 
2412 void ASTStmtWriter::VisitOMPOrderedDirective(OMPOrderedDirective *D) {
2413   VisitStmt(D);
2414   VisitOMPExecutableDirective(D);
2415   Code = serialization::STMT_OMP_ORDERED_DIRECTIVE;
2416 }
2417 
2418 void ASTStmtWriter::VisitOMPTeamsDirective(OMPTeamsDirective *D) {
2419   VisitStmt(D);
2420   VisitOMPExecutableDirective(D);
2421   Code = serialization::STMT_OMP_TEAMS_DIRECTIVE;
2422 }
2423 
2424 void ASTStmtWriter::VisitOMPCancellationPointDirective(
2425     OMPCancellationPointDirective *D) {
2426   VisitStmt(D);
2427   VisitOMPExecutableDirective(D);
2428   Record.writeEnum(D->getCancelRegion());
2429   Code = serialization::STMT_OMP_CANCELLATION_POINT_DIRECTIVE;
2430 }
2431 
2432 void ASTStmtWriter::VisitOMPCancelDirective(OMPCancelDirective *D) {
2433   VisitStmt(D);
2434   VisitOMPExecutableDirective(D);
2435   Record.writeEnum(D->getCancelRegion());
2436   Code = serialization::STMT_OMP_CANCEL_DIRECTIVE;
2437 }
2438 
2439 void ASTStmtWriter::VisitOMPTaskLoopDirective(OMPTaskLoopDirective *D) {
2440   VisitOMPLoopDirective(D);
2441   Record.writeBool(D->hasCancel());
2442   Code = serialization::STMT_OMP_TASKLOOP_DIRECTIVE;
2443 }
2444 
2445 void ASTStmtWriter::VisitOMPTaskLoopSimdDirective(OMPTaskLoopSimdDirective *D) {
2446   VisitOMPLoopDirective(D);
2447   Code = serialization::STMT_OMP_TASKLOOP_SIMD_DIRECTIVE;
2448 }
2449 
2450 void ASTStmtWriter::VisitOMPMasterTaskLoopDirective(
2451     OMPMasterTaskLoopDirective *D) {
2452   VisitOMPLoopDirective(D);
2453   Record.writeBool(D->hasCancel());
2454   Code = serialization::STMT_OMP_MASTER_TASKLOOP_DIRECTIVE;
2455 }
2456 
2457 void ASTStmtWriter::VisitOMPMasterTaskLoopSimdDirective(
2458     OMPMasterTaskLoopSimdDirective *D) {
2459   VisitOMPLoopDirective(D);
2460   Code = serialization::STMT_OMP_MASTER_TASKLOOP_SIMD_DIRECTIVE;
2461 }
2462 
2463 void ASTStmtWriter::VisitOMPParallelMasterTaskLoopDirective(
2464     OMPParallelMasterTaskLoopDirective *D) {
2465   VisitOMPLoopDirective(D);
2466   Record.writeBool(D->hasCancel());
2467   Code = serialization::STMT_OMP_PARALLEL_MASTER_TASKLOOP_DIRECTIVE;
2468 }
2469 
2470 void ASTStmtWriter::VisitOMPParallelMasterTaskLoopSimdDirective(
2471     OMPParallelMasterTaskLoopSimdDirective *D) {
2472   VisitOMPLoopDirective(D);
2473   Code = serialization::STMT_OMP_PARALLEL_MASTER_TASKLOOP_SIMD_DIRECTIVE;
2474 }
2475 
2476 void ASTStmtWriter::VisitOMPDistributeDirective(OMPDistributeDirective *D) {
2477   VisitOMPLoopDirective(D);
2478   Code = serialization::STMT_OMP_DISTRIBUTE_DIRECTIVE;
2479 }
2480 
2481 void ASTStmtWriter::VisitOMPTargetUpdateDirective(OMPTargetUpdateDirective *D) {
2482   VisitStmt(D);
2483   VisitOMPExecutableDirective(D);
2484   Code = serialization::STMT_OMP_TARGET_UPDATE_DIRECTIVE;
2485 }
2486 
2487 void ASTStmtWriter::VisitOMPDistributeParallelForDirective(
2488     OMPDistributeParallelForDirective *D) {
2489   VisitOMPLoopDirective(D);
2490   Record.writeBool(D->hasCancel());
2491   Code = serialization::STMT_OMP_DISTRIBUTE_PARALLEL_FOR_DIRECTIVE;
2492 }
2493 
2494 void ASTStmtWriter::VisitOMPDistributeParallelForSimdDirective(
2495     OMPDistributeParallelForSimdDirective *D) {
2496   VisitOMPLoopDirective(D);
2497   Code = serialization::STMT_OMP_DISTRIBUTE_PARALLEL_FOR_SIMD_DIRECTIVE;
2498 }
2499 
2500 void ASTStmtWriter::VisitOMPDistributeSimdDirective(
2501     OMPDistributeSimdDirective *D) {
2502   VisitOMPLoopDirective(D);
2503   Code = serialization::STMT_OMP_DISTRIBUTE_SIMD_DIRECTIVE;
2504 }
2505 
2506 void ASTStmtWriter::VisitOMPTargetParallelForSimdDirective(
2507     OMPTargetParallelForSimdDirective *D) {
2508   VisitOMPLoopDirective(D);
2509   Code = serialization::STMT_OMP_TARGET_PARALLEL_FOR_SIMD_DIRECTIVE;
2510 }
2511 
2512 void ASTStmtWriter::VisitOMPTargetSimdDirective(OMPTargetSimdDirective *D) {
2513   VisitOMPLoopDirective(D);
2514   Code = serialization::STMT_OMP_TARGET_SIMD_DIRECTIVE;
2515 }
2516 
2517 void ASTStmtWriter::VisitOMPTeamsDistributeDirective(
2518     OMPTeamsDistributeDirective *D) {
2519   VisitOMPLoopDirective(D);
2520   Code = serialization::STMT_OMP_TEAMS_DISTRIBUTE_DIRECTIVE;
2521 }
2522 
2523 void ASTStmtWriter::VisitOMPTeamsDistributeSimdDirective(
2524     OMPTeamsDistributeSimdDirective *D) {
2525   VisitOMPLoopDirective(D);
2526   Code = serialization::STMT_OMP_TEAMS_DISTRIBUTE_SIMD_DIRECTIVE;
2527 }
2528 
2529 void ASTStmtWriter::VisitOMPTeamsDistributeParallelForSimdDirective(
2530     OMPTeamsDistributeParallelForSimdDirective *D) {
2531   VisitOMPLoopDirective(D);
2532   Code = serialization::STMT_OMP_TEAMS_DISTRIBUTE_PARALLEL_FOR_SIMD_DIRECTIVE;
2533 }
2534 
2535 void ASTStmtWriter::VisitOMPTeamsDistributeParallelForDirective(
2536     OMPTeamsDistributeParallelForDirective *D) {
2537   VisitOMPLoopDirective(D);
2538   Record.writeBool(D->hasCancel());
2539   Code = serialization::STMT_OMP_TEAMS_DISTRIBUTE_PARALLEL_FOR_DIRECTIVE;
2540 }
2541 
2542 void ASTStmtWriter::VisitOMPTargetTeamsDirective(OMPTargetTeamsDirective *D) {
2543   VisitStmt(D);
2544   VisitOMPExecutableDirective(D);
2545   Code = serialization::STMT_OMP_TARGET_TEAMS_DIRECTIVE;
2546 }
2547 
2548 void ASTStmtWriter::VisitOMPTargetTeamsDistributeDirective(
2549     OMPTargetTeamsDistributeDirective *D) {
2550   VisitOMPLoopDirective(D);
2551   Code = serialization::STMT_OMP_TARGET_TEAMS_DISTRIBUTE_DIRECTIVE;
2552 }
2553 
2554 void ASTStmtWriter::VisitOMPTargetTeamsDistributeParallelForDirective(
2555     OMPTargetTeamsDistributeParallelForDirective *D) {
2556   VisitOMPLoopDirective(D);
2557   Record.writeBool(D->hasCancel());
2558   Code = serialization::STMT_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_FOR_DIRECTIVE;
2559 }
2560 
2561 void ASTStmtWriter::VisitOMPTargetTeamsDistributeParallelForSimdDirective(
2562     OMPTargetTeamsDistributeParallelForSimdDirective *D) {
2563   VisitOMPLoopDirective(D);
2564   Code = serialization::
2565       STMT_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_FOR_SIMD_DIRECTIVE;
2566 }
2567 
2568 void ASTStmtWriter::VisitOMPTargetTeamsDistributeSimdDirective(
2569     OMPTargetTeamsDistributeSimdDirective *D) {
2570   VisitOMPLoopDirective(D);
2571   Code = serialization::STMT_OMP_TARGET_TEAMS_DISTRIBUTE_SIMD_DIRECTIVE;
2572 }
2573 
2574 void ASTStmtWriter::VisitOMPInteropDirective(OMPInteropDirective *D) {
2575   VisitStmt(D);
2576   VisitOMPExecutableDirective(D);
2577   Code = serialization::STMT_OMP_INTEROP_DIRECTIVE;
2578 }
2579 
2580 void ASTStmtWriter::VisitOMPDispatchDirective(OMPDispatchDirective *D) {
2581   VisitStmt(D);
2582   VisitOMPExecutableDirective(D);
2583   Record.AddSourceLocation(D->getTargetCallLoc());
2584   Code = serialization::STMT_OMP_DISPATCH_DIRECTIVE;
2585 }
2586 
2587 void ASTStmtWriter::VisitOMPMaskedDirective(OMPMaskedDirective *D) {
2588   VisitStmt(D);
2589   VisitOMPExecutableDirective(D);
2590   Code = serialization::STMT_OMP_MASKED_DIRECTIVE;
2591 }
2592 
2593 void ASTStmtWriter::VisitOMPGenericLoopDirective(OMPGenericLoopDirective *D) {
2594   VisitOMPLoopDirective(D);
2595   Code = serialization::STMT_OMP_GENERIC_LOOP_DIRECTIVE;
2596 }
2597 
2598 //===----------------------------------------------------------------------===//
2599 // ASTWriter Implementation
2600 //===----------------------------------------------------------------------===//
2601 
2602 unsigned ASTWriter::RecordSwitchCaseID(SwitchCase *S) {
2603   assert(SwitchCaseIDs.find(S) == SwitchCaseIDs.end() &&
2604          "SwitchCase recorded twice");
2605   unsigned NextID = SwitchCaseIDs.size();
2606   SwitchCaseIDs[S] = NextID;
2607   return NextID;
2608 }
2609 
2610 unsigned ASTWriter::getSwitchCaseID(SwitchCase *S) {
2611   assert(SwitchCaseIDs.find(S) != SwitchCaseIDs.end() &&
2612          "SwitchCase hasn't been seen yet");
2613   return SwitchCaseIDs[S];
2614 }
2615 
2616 void ASTWriter::ClearSwitchCaseIDs() {
2617   SwitchCaseIDs.clear();
2618 }
2619 
2620 /// Write the given substatement or subexpression to the
2621 /// bitstream.
2622 void ASTWriter::WriteSubStmt(Stmt *S) {
2623   RecordData Record;
2624   ASTStmtWriter Writer(*this, Record);
2625   ++NumStatements;
2626 
2627   if (!S) {
2628     Stream.EmitRecord(serialization::STMT_NULL_PTR, Record);
2629     return;
2630   }
2631 
2632   llvm::DenseMap<Stmt *, uint64_t>::iterator I = SubStmtEntries.find(S);
2633   if (I != SubStmtEntries.end()) {
2634     Record.push_back(I->second);
2635     Stream.EmitRecord(serialization::STMT_REF_PTR, Record);
2636     return;
2637   }
2638 
2639 #ifndef NDEBUG
2640   assert(!ParentStmts.count(S) && "There is a Stmt cycle!");
2641 
2642   struct ParentStmtInserterRAII {
2643     Stmt *S;
2644     llvm::DenseSet<Stmt *> &ParentStmts;
2645 
2646     ParentStmtInserterRAII(Stmt *S, llvm::DenseSet<Stmt *> &ParentStmts)
2647       : S(S), ParentStmts(ParentStmts) {
2648       ParentStmts.insert(S);
2649     }
2650     ~ParentStmtInserterRAII() {
2651       ParentStmts.erase(S);
2652     }
2653   };
2654 
2655   ParentStmtInserterRAII ParentStmtInserter(S, ParentStmts);
2656 #endif
2657 
2658   Writer.Visit(S);
2659 
2660   uint64_t Offset = Writer.Emit();
2661   SubStmtEntries[S] = Offset;
2662 }
2663 
2664 /// Flush all of the statements that have been added to the
2665 /// queue via AddStmt().
2666 void ASTRecordWriter::FlushStmts() {
2667   // We expect to be the only consumer of the two temporary statement maps,
2668   // assert that they are empty.
2669   assert(Writer->SubStmtEntries.empty() && "unexpected entries in sub-stmt map");
2670   assert(Writer->ParentStmts.empty() && "unexpected entries in parent stmt map");
2671 
2672   for (unsigned I = 0, N = StmtsToEmit.size(); I != N; ++I) {
2673     Writer->WriteSubStmt(StmtsToEmit[I]);
2674 
2675     assert(N == StmtsToEmit.size() && "record modified while being written!");
2676 
2677     // Note that we are at the end of a full expression. Any
2678     // expression records that follow this one are part of a different
2679     // expression.
2680     Writer->Stream.EmitRecord(serialization::STMT_STOP, ArrayRef<uint32_t>());
2681 
2682     Writer->SubStmtEntries.clear();
2683     Writer->ParentStmts.clear();
2684   }
2685 
2686   StmtsToEmit.clear();
2687 }
2688 
2689 void ASTRecordWriter::FlushSubStmts() {
2690   // For a nested statement, write out the substatements in reverse order (so
2691   // that a simple stack machine can be used when loading), and don't emit a
2692   // STMT_STOP after each one.
2693   for (unsigned I = 0, N = StmtsToEmit.size(); I != N; ++I) {
2694     Writer->WriteSubStmt(StmtsToEmit[N - I - 1]);
2695     assert(N == StmtsToEmit.size() && "record modified while being written!");
2696   }
2697 
2698   StmtsToEmit.clear();
2699 }
2700