1 //===- ASTReaderStmt.cpp - Stmt/Expr Deserialization ----------------------===//
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 // Statement/expression deserialization.  This implements the
10 // ASTReader::ReadStmt method.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "clang/Serialization/ASTReader.h"
15 #include "clang/AST/ASTContext.h"
16 #include "clang/AST/AttrIterator.h"
17 #include "clang/AST/Decl.h"
18 #include "clang/AST/DeclAccessPair.h"
19 #include "clang/AST/DeclCXX.h"
20 #include "clang/AST/DeclGroup.h"
21 #include "clang/AST/DeclObjC.h"
22 #include "clang/AST/DeclTemplate.h"
23 #include "clang/AST/DeclarationName.h"
24 #include "clang/AST/Expr.h"
25 #include "clang/AST/ExprCXX.h"
26 #include "clang/AST/ExprObjC.h"
27 #include "clang/AST/ExprOpenMP.h"
28 #include "clang/AST/NestedNameSpecifier.h"
29 #include "clang/AST/OpenMPClause.h"
30 #include "clang/AST/OperationKinds.h"
31 #include "clang/AST/Stmt.h"
32 #include "clang/AST/StmtCXX.h"
33 #include "clang/AST/StmtObjC.h"
34 #include "clang/AST/StmtOpenMP.h"
35 #include "clang/AST/StmtVisitor.h"
36 #include "clang/AST/TemplateBase.h"
37 #include "clang/AST/Type.h"
38 #include "clang/AST/UnresolvedSet.h"
39 #include "clang/Basic/CapturedStmt.h"
40 #include "clang/Basic/ExpressionTraits.h"
41 #include "clang/Basic/LLVM.h"
42 #include "clang/Basic/Lambda.h"
43 #include "clang/Basic/LangOptions.h"
44 #include "clang/Basic/OpenMPKinds.h"
45 #include "clang/Basic/OperatorKinds.h"
46 #include "clang/Basic/SourceLocation.h"
47 #include "clang/Basic/Specifiers.h"
48 #include "clang/Basic/TypeTraits.h"
49 #include "clang/Lex/Token.h"
50 #include "clang/Serialization/ASTBitCodes.h"
51 #include "llvm/ADT/DenseMap.h"
52 #include "llvm/ADT/SmallString.h"
53 #include "llvm/ADT/SmallVector.h"
54 #include "llvm/ADT/StringRef.h"
55 #include "llvm/Bitstream/BitstreamReader.h"
56 #include "llvm/Support/Casting.h"
57 #include "llvm/Support/ErrorHandling.h"
58 #include <algorithm>
59 #include <cassert>
60 #include <cstdint>
61 #include <string>
62 
63 using namespace clang;
64 using namespace serialization;
65 
66 namespace clang {
67 
68   class ASTStmtReader : public StmtVisitor<ASTStmtReader> {
69     friend class OMPClauseReader;
70 
71     ASTRecordReader &Record;
72     llvm::BitstreamCursor &DeclsCursor;
73 
74     SourceLocation ReadSourceLocation() {
75       return Record.readSourceLocation();
76     }
77 
78     SourceRange ReadSourceRange() {
79       return Record.readSourceRange();
80     }
81 
82     std::string ReadString() {
83       return Record.readString();
84     }
85 
86     TypeSourceInfo *GetTypeSourceInfo() {
87       return Record.getTypeSourceInfo();
88     }
89 
90     Decl *ReadDecl() {
91       return Record.readDecl();
92     }
93 
94     template<typename T>
95     T *ReadDeclAs() {
96       return Record.readDeclAs<T>();
97     }
98 
99     void ReadDeclarationNameLoc(DeclarationNameLoc &DNLoc,
100                                 DeclarationName Name) {
101       Record.readDeclarationNameLoc(DNLoc, Name);
102     }
103 
104     void ReadDeclarationNameInfo(DeclarationNameInfo &NameInfo) {
105       Record.readDeclarationNameInfo(NameInfo);
106     }
107 
108   public:
109     ASTStmtReader(ASTRecordReader &Record, llvm::BitstreamCursor &Cursor)
110         : Record(Record), DeclsCursor(Cursor) {}
111 
112     /// The number of record fields required for the Stmt class
113     /// itself.
114     static const unsigned NumStmtFields = 1;
115 
116     /// The number of record fields required for the Expr class
117     /// itself.
118     static const unsigned NumExprFields = NumStmtFields + 7;
119 
120     /// Read and initialize a ExplicitTemplateArgumentList structure.
121     void ReadTemplateKWAndArgsInfo(ASTTemplateKWAndArgsInfo &Args,
122                                    TemplateArgumentLoc *ArgsLocArray,
123                                    unsigned NumTemplateArgs);
124 
125     /// Read and initialize a ExplicitTemplateArgumentList structure.
126     void ReadExplicitTemplateArgumentList(ASTTemplateArgumentListInfo &ArgList,
127                                           unsigned NumTemplateArgs);
128 
129     void VisitStmt(Stmt *S);
130 #define STMT(Type, Base) \
131     void Visit##Type(Type *);
132 #include "clang/AST/StmtNodes.inc"
133   };
134 
135 } // namespace clang
136 
137 void ASTStmtReader::ReadTemplateKWAndArgsInfo(ASTTemplateKWAndArgsInfo &Args,
138                                               TemplateArgumentLoc *ArgsLocArray,
139                                               unsigned NumTemplateArgs) {
140   SourceLocation TemplateKWLoc = ReadSourceLocation();
141   TemplateArgumentListInfo ArgInfo;
142   ArgInfo.setLAngleLoc(ReadSourceLocation());
143   ArgInfo.setRAngleLoc(ReadSourceLocation());
144   for (unsigned i = 0; i != NumTemplateArgs; ++i)
145     ArgInfo.addArgument(Record.readTemplateArgumentLoc());
146   Args.initializeFrom(TemplateKWLoc, ArgInfo, ArgsLocArray);
147 }
148 
149 void ASTStmtReader::VisitStmt(Stmt *S) {
150   S->setIsOMPStructuredBlock(Record.readInt());
151   assert(Record.getIdx() == NumStmtFields && "Incorrect statement field count");
152 }
153 
154 void ASTStmtReader::VisitNullStmt(NullStmt *S) {
155   VisitStmt(S);
156   S->setSemiLoc(ReadSourceLocation());
157   S->NullStmtBits.HasLeadingEmptyMacro = Record.readInt();
158 }
159 
160 void ASTStmtReader::VisitCompoundStmt(CompoundStmt *S) {
161   VisitStmt(S);
162   SmallVector<Stmt *, 16> Stmts;
163   unsigned NumStmts = Record.readInt();
164   while (NumStmts--)
165     Stmts.push_back(Record.readSubStmt());
166   S->setStmts(Stmts);
167   S->CompoundStmtBits.LBraceLoc = ReadSourceLocation();
168   S->RBraceLoc = ReadSourceLocation();
169 }
170 
171 void ASTStmtReader::VisitSwitchCase(SwitchCase *S) {
172   VisitStmt(S);
173   Record.recordSwitchCaseID(S, Record.readInt());
174   S->setKeywordLoc(ReadSourceLocation());
175   S->setColonLoc(ReadSourceLocation());
176 }
177 
178 void ASTStmtReader::VisitCaseStmt(CaseStmt *S) {
179   VisitSwitchCase(S);
180   bool CaseStmtIsGNURange = Record.readInt();
181   S->setLHS(Record.readSubExpr());
182   S->setSubStmt(Record.readSubStmt());
183   if (CaseStmtIsGNURange) {
184     S->setRHS(Record.readSubExpr());
185     S->setEllipsisLoc(ReadSourceLocation());
186   }
187 }
188 
189 void ASTStmtReader::VisitDefaultStmt(DefaultStmt *S) {
190   VisitSwitchCase(S);
191   S->setSubStmt(Record.readSubStmt());
192 }
193 
194 void ASTStmtReader::VisitLabelStmt(LabelStmt *S) {
195   VisitStmt(S);
196   auto *LD = ReadDeclAs<LabelDecl>();
197   LD->setStmt(S);
198   S->setDecl(LD);
199   S->setSubStmt(Record.readSubStmt());
200   S->setIdentLoc(ReadSourceLocation());
201 }
202 
203 void ASTStmtReader::VisitAttributedStmt(AttributedStmt *S) {
204   VisitStmt(S);
205   // NumAttrs in AttributedStmt is set when creating an empty
206   // AttributedStmt in AttributedStmt::CreateEmpty, since it is needed
207   // to allocate the right amount of space for the trailing Attr *.
208   uint64_t NumAttrs = Record.readInt();
209   AttrVec Attrs;
210   Record.readAttributes(Attrs);
211   (void)NumAttrs;
212   assert(NumAttrs == S->AttributedStmtBits.NumAttrs);
213   assert(NumAttrs == Attrs.size());
214   std::copy(Attrs.begin(), Attrs.end(), S->getAttrArrayPtr());
215   S->SubStmt = Record.readSubStmt();
216   S->AttributedStmtBits.AttrLoc = ReadSourceLocation();
217 }
218 
219 void ASTStmtReader::VisitIfStmt(IfStmt *S) {
220   VisitStmt(S);
221 
222   S->setConstexpr(Record.readInt());
223   bool HasElse = Record.readInt();
224   bool HasVar = Record.readInt();
225   bool HasInit = Record.readInt();
226 
227   S->setCond(Record.readSubExpr());
228   S->setThen(Record.readSubStmt());
229   if (HasElse)
230     S->setElse(Record.readSubStmt());
231   if (HasVar)
232     S->setConditionVariable(Record.getContext(), ReadDeclAs<VarDecl>());
233   if (HasInit)
234     S->setInit(Record.readSubStmt());
235 
236   S->setIfLoc(ReadSourceLocation());
237   if (HasElse)
238     S->setElseLoc(ReadSourceLocation());
239 }
240 
241 void ASTStmtReader::VisitSwitchStmt(SwitchStmt *S) {
242   VisitStmt(S);
243 
244   bool HasInit = Record.readInt();
245   bool HasVar = Record.readInt();
246   bool AllEnumCasesCovered = Record.readInt();
247   if (AllEnumCasesCovered)
248     S->setAllEnumCasesCovered();
249 
250   S->setCond(Record.readSubExpr());
251   S->setBody(Record.readSubStmt());
252   if (HasInit)
253     S->setInit(Record.readSubStmt());
254   if (HasVar)
255     S->setConditionVariable(Record.getContext(), ReadDeclAs<VarDecl>());
256 
257   S->setSwitchLoc(ReadSourceLocation());
258 
259   SwitchCase *PrevSC = nullptr;
260   for (auto E = Record.size(); Record.getIdx() != E; ) {
261     SwitchCase *SC = Record.getSwitchCaseWithID(Record.readInt());
262     if (PrevSC)
263       PrevSC->setNextSwitchCase(SC);
264     else
265       S->setSwitchCaseList(SC);
266 
267     PrevSC = SC;
268   }
269 }
270 
271 void ASTStmtReader::VisitWhileStmt(WhileStmt *S) {
272   VisitStmt(S);
273 
274   bool HasVar = Record.readInt();
275 
276   S->setCond(Record.readSubExpr());
277   S->setBody(Record.readSubStmt());
278   if (HasVar)
279     S->setConditionVariable(Record.getContext(), ReadDeclAs<VarDecl>());
280 
281   S->setWhileLoc(ReadSourceLocation());
282 }
283 
284 void ASTStmtReader::VisitDoStmt(DoStmt *S) {
285   VisitStmt(S);
286   S->setCond(Record.readSubExpr());
287   S->setBody(Record.readSubStmt());
288   S->setDoLoc(ReadSourceLocation());
289   S->setWhileLoc(ReadSourceLocation());
290   S->setRParenLoc(ReadSourceLocation());
291 }
292 
293 void ASTStmtReader::VisitForStmt(ForStmt *S) {
294   VisitStmt(S);
295   S->setInit(Record.readSubStmt());
296   S->setCond(Record.readSubExpr());
297   S->setConditionVariable(Record.getContext(), ReadDeclAs<VarDecl>());
298   S->setInc(Record.readSubExpr());
299   S->setBody(Record.readSubStmt());
300   S->setForLoc(ReadSourceLocation());
301   S->setLParenLoc(ReadSourceLocation());
302   S->setRParenLoc(ReadSourceLocation());
303 }
304 
305 void ASTStmtReader::VisitGotoStmt(GotoStmt *S) {
306   VisitStmt(S);
307   S->setLabel(ReadDeclAs<LabelDecl>());
308   S->setGotoLoc(ReadSourceLocation());
309   S->setLabelLoc(ReadSourceLocation());
310 }
311 
312 void ASTStmtReader::VisitIndirectGotoStmt(IndirectGotoStmt *S) {
313   VisitStmt(S);
314   S->setGotoLoc(ReadSourceLocation());
315   S->setStarLoc(ReadSourceLocation());
316   S->setTarget(Record.readSubExpr());
317 }
318 
319 void ASTStmtReader::VisitContinueStmt(ContinueStmt *S) {
320   VisitStmt(S);
321   S->setContinueLoc(ReadSourceLocation());
322 }
323 
324 void ASTStmtReader::VisitBreakStmt(BreakStmt *S) {
325   VisitStmt(S);
326   S->setBreakLoc(ReadSourceLocation());
327 }
328 
329 void ASTStmtReader::VisitReturnStmt(ReturnStmt *S) {
330   VisitStmt(S);
331 
332   bool HasNRVOCandidate = Record.readInt();
333 
334   S->setRetValue(Record.readSubExpr());
335   if (HasNRVOCandidate)
336     S->setNRVOCandidate(ReadDeclAs<VarDecl>());
337 
338   S->setReturnLoc(ReadSourceLocation());
339 }
340 
341 void ASTStmtReader::VisitDeclStmt(DeclStmt *S) {
342   VisitStmt(S);
343   S->setStartLoc(ReadSourceLocation());
344   S->setEndLoc(ReadSourceLocation());
345 
346   if (Record.size() - Record.getIdx() == 1) {
347     // Single declaration
348     S->setDeclGroup(DeclGroupRef(ReadDecl()));
349   } else {
350     SmallVector<Decl *, 16> Decls;
351     int N = Record.size() - Record.getIdx();
352     Decls.reserve(N);
353     for (int I = 0; I < N; ++I)
354       Decls.push_back(ReadDecl());
355     S->setDeclGroup(DeclGroupRef(DeclGroup::Create(Record.getContext(),
356                                                    Decls.data(),
357                                                    Decls.size())));
358   }
359 }
360 
361 void ASTStmtReader::VisitAsmStmt(AsmStmt *S) {
362   VisitStmt(S);
363   S->NumOutputs = Record.readInt();
364   S->NumInputs = Record.readInt();
365   S->NumClobbers = Record.readInt();
366   S->setAsmLoc(ReadSourceLocation());
367   S->setVolatile(Record.readInt());
368   S->setSimple(Record.readInt());
369 }
370 
371 void ASTStmtReader::VisitGCCAsmStmt(GCCAsmStmt *S) {
372   VisitAsmStmt(S);
373   S->NumLabels = Record.readInt();
374   S->setRParenLoc(ReadSourceLocation());
375   S->setAsmString(cast_or_null<StringLiteral>(Record.readSubStmt()));
376 
377   unsigned NumOutputs = S->getNumOutputs();
378   unsigned NumInputs = S->getNumInputs();
379   unsigned NumClobbers = S->getNumClobbers();
380   unsigned NumLabels = S->getNumLabels();
381 
382   // Outputs and inputs
383   SmallVector<IdentifierInfo *, 16> Names;
384   SmallVector<StringLiteral*, 16> Constraints;
385   SmallVector<Stmt*, 16> Exprs;
386   for (unsigned I = 0, N = NumOutputs + NumInputs; I != N; ++I) {
387     Names.push_back(Record.getIdentifierInfo());
388     Constraints.push_back(cast_or_null<StringLiteral>(Record.readSubStmt()));
389     Exprs.push_back(Record.readSubStmt());
390   }
391 
392   // Constraints
393   SmallVector<StringLiteral*, 16> Clobbers;
394   for (unsigned I = 0; I != NumClobbers; ++I)
395     Clobbers.push_back(cast_or_null<StringLiteral>(Record.readSubStmt()));
396 
397   // Labels
398   for (unsigned I = 0, N = NumLabels; I != N; ++I)
399     Exprs.push_back(Record.readSubStmt());
400 
401   S->setOutputsAndInputsAndClobbers(Record.getContext(),
402                                     Names.data(), Constraints.data(),
403                                     Exprs.data(), NumOutputs, NumInputs,
404                                     NumLabels,
405                                     Clobbers.data(), NumClobbers);
406 }
407 
408 void ASTStmtReader::VisitMSAsmStmt(MSAsmStmt *S) {
409   VisitAsmStmt(S);
410   S->LBraceLoc = ReadSourceLocation();
411   S->EndLoc = ReadSourceLocation();
412   S->NumAsmToks = Record.readInt();
413   std::string AsmStr = ReadString();
414 
415   // Read the tokens.
416   SmallVector<Token, 16> AsmToks;
417   AsmToks.reserve(S->NumAsmToks);
418   for (unsigned i = 0, e = S->NumAsmToks; i != e; ++i) {
419     AsmToks.push_back(Record.readToken());
420   }
421 
422   // The calls to reserve() for the FooData vectors are mandatory to
423   // prevent dead StringRefs in the Foo vectors.
424 
425   // Read the clobbers.
426   SmallVector<std::string, 16> ClobbersData;
427   SmallVector<StringRef, 16> Clobbers;
428   ClobbersData.reserve(S->NumClobbers);
429   Clobbers.reserve(S->NumClobbers);
430   for (unsigned i = 0, e = S->NumClobbers; i != e; ++i) {
431     ClobbersData.push_back(ReadString());
432     Clobbers.push_back(ClobbersData.back());
433   }
434 
435   // Read the operands.
436   unsigned NumOperands = S->NumOutputs + S->NumInputs;
437   SmallVector<Expr*, 16> Exprs;
438   SmallVector<std::string, 16> ConstraintsData;
439   SmallVector<StringRef, 16> Constraints;
440   Exprs.reserve(NumOperands);
441   ConstraintsData.reserve(NumOperands);
442   Constraints.reserve(NumOperands);
443   for (unsigned i = 0; i != NumOperands; ++i) {
444     Exprs.push_back(cast<Expr>(Record.readSubStmt()));
445     ConstraintsData.push_back(ReadString());
446     Constraints.push_back(ConstraintsData.back());
447   }
448 
449   S->initialize(Record.getContext(), AsmStr, AsmToks,
450                 Constraints, Exprs, Clobbers);
451 }
452 
453 void ASTStmtReader::VisitCoroutineBodyStmt(CoroutineBodyStmt *S) {
454   VisitStmt(S);
455   assert(Record.peekInt() == S->NumParams);
456   Record.skipInts(1);
457   auto *StoredStmts = S->getStoredStmts();
458   for (unsigned i = 0;
459        i < CoroutineBodyStmt::SubStmt::FirstParamMove + S->NumParams; ++i)
460     StoredStmts[i] = Record.readSubStmt();
461 }
462 
463 void ASTStmtReader::VisitCoreturnStmt(CoreturnStmt *S) {
464   VisitStmt(S);
465   S->CoreturnLoc = Record.readSourceLocation();
466   for (auto &SubStmt: S->SubStmts)
467     SubStmt = Record.readSubStmt();
468   S->IsImplicit = Record.readInt() != 0;
469 }
470 
471 void ASTStmtReader::VisitCoawaitExpr(CoawaitExpr *E) {
472   VisitExpr(E);
473   E->KeywordLoc = ReadSourceLocation();
474   for (auto &SubExpr: E->SubExprs)
475     SubExpr = Record.readSubStmt();
476   E->OpaqueValue = cast_or_null<OpaqueValueExpr>(Record.readSubStmt());
477   E->setIsImplicit(Record.readInt() != 0);
478 }
479 
480 void ASTStmtReader::VisitCoyieldExpr(CoyieldExpr *E) {
481   VisitExpr(E);
482   E->KeywordLoc = ReadSourceLocation();
483   for (auto &SubExpr: E->SubExprs)
484     SubExpr = Record.readSubStmt();
485   E->OpaqueValue = cast_or_null<OpaqueValueExpr>(Record.readSubStmt());
486 }
487 
488 void ASTStmtReader::VisitDependentCoawaitExpr(DependentCoawaitExpr *E) {
489   VisitExpr(E);
490   E->KeywordLoc = ReadSourceLocation();
491   for (auto &SubExpr: E->SubExprs)
492     SubExpr = Record.readSubStmt();
493 }
494 
495 void ASTStmtReader::VisitCapturedStmt(CapturedStmt *S) {
496   VisitStmt(S);
497   Record.skipInts(1);
498   S->setCapturedDecl(ReadDeclAs<CapturedDecl>());
499   S->setCapturedRegionKind(static_cast<CapturedRegionKind>(Record.readInt()));
500   S->setCapturedRecordDecl(ReadDeclAs<RecordDecl>());
501 
502   // Capture inits
503   for (CapturedStmt::capture_init_iterator I = S->capture_init_begin(),
504                                            E = S->capture_init_end();
505        I != E; ++I)
506     *I = Record.readSubExpr();
507 
508   // Body
509   S->setCapturedStmt(Record.readSubStmt());
510   S->getCapturedDecl()->setBody(S->getCapturedStmt());
511 
512   // Captures
513   for (auto &I : S->captures()) {
514     I.VarAndKind.setPointer(ReadDeclAs<VarDecl>());
515     I.VarAndKind.setInt(
516         static_cast<CapturedStmt::VariableCaptureKind>(Record.readInt()));
517     I.Loc = ReadSourceLocation();
518   }
519 }
520 
521 void ASTStmtReader::VisitExpr(Expr *E) {
522   VisitStmt(E);
523   E->setType(Record.readType());
524   E->setTypeDependent(Record.readInt());
525   E->setValueDependent(Record.readInt());
526   E->setInstantiationDependent(Record.readInt());
527   E->ExprBits.ContainsUnexpandedParameterPack = Record.readInt();
528   E->setValueKind(static_cast<ExprValueKind>(Record.readInt()));
529   E->setObjectKind(static_cast<ExprObjectKind>(Record.readInt()));
530   assert(Record.getIdx() == NumExprFields &&
531          "Incorrect expression field count");
532 }
533 
534 void ASTStmtReader::VisitConstantExpr(ConstantExpr *E) {
535   VisitExpr(E);
536   E->ConstantExprBits.ResultKind = Record.readInt();
537   switch (E->ConstantExprBits.ResultKind) {
538   case ConstantExpr::RSK_Int64: {
539     E->Int64Result() = Record.readInt();
540     uint64_t tmp = Record.readInt();
541     E->ConstantExprBits.IsUnsigned = tmp & 0x1;
542     E->ConstantExprBits.BitWidth = tmp >> 1;
543     break;
544   }
545   case ConstantExpr::RSK_APValue:
546     E->APValueResult() = Record.readAPValue();
547   }
548   E->setSubExpr(Record.readSubExpr());
549 }
550 
551 void ASTStmtReader::VisitPredefinedExpr(PredefinedExpr *E) {
552   VisitExpr(E);
553   bool HasFunctionName = Record.readInt();
554   E->PredefinedExprBits.HasFunctionName = HasFunctionName;
555   E->PredefinedExprBits.Kind = Record.readInt();
556   E->setLocation(ReadSourceLocation());
557   if (HasFunctionName)
558     E->setFunctionName(cast<StringLiteral>(Record.readSubExpr()));
559 }
560 
561 void ASTStmtReader::VisitDeclRefExpr(DeclRefExpr *E) {
562   VisitExpr(E);
563 
564   E->DeclRefExprBits.HasQualifier = Record.readInt();
565   E->DeclRefExprBits.HasFoundDecl = Record.readInt();
566   E->DeclRefExprBits.HasTemplateKWAndArgsInfo = Record.readInt();
567   E->DeclRefExprBits.HadMultipleCandidates = Record.readInt();
568   E->DeclRefExprBits.RefersToEnclosingVariableOrCapture = Record.readInt();
569   E->DeclRefExprBits.NonOdrUseReason = Record.readInt();
570   unsigned NumTemplateArgs = 0;
571   if (E->hasTemplateKWAndArgsInfo())
572     NumTemplateArgs = Record.readInt();
573 
574   if (E->hasQualifier())
575     new (E->getTrailingObjects<NestedNameSpecifierLoc>())
576         NestedNameSpecifierLoc(Record.readNestedNameSpecifierLoc());
577 
578   if (E->hasFoundDecl())
579     *E->getTrailingObjects<NamedDecl *>() = ReadDeclAs<NamedDecl>();
580 
581   if (E->hasTemplateKWAndArgsInfo())
582     ReadTemplateKWAndArgsInfo(
583         *E->getTrailingObjects<ASTTemplateKWAndArgsInfo>(),
584         E->getTrailingObjects<TemplateArgumentLoc>(), NumTemplateArgs);
585 
586   E->setDecl(ReadDeclAs<ValueDecl>());
587   E->setLocation(ReadSourceLocation());
588   ReadDeclarationNameLoc(E->DNLoc, E->getDecl()->getDeclName());
589 }
590 
591 void ASTStmtReader::VisitIntegerLiteral(IntegerLiteral *E) {
592   VisitExpr(E);
593   E->setLocation(ReadSourceLocation());
594   E->setValue(Record.getContext(), Record.readAPInt());
595 }
596 
597 void ASTStmtReader::VisitFixedPointLiteral(FixedPointLiteral *E) {
598   VisitExpr(E);
599   E->setLocation(ReadSourceLocation());
600   E->setValue(Record.getContext(), Record.readAPInt());
601 }
602 
603 void ASTStmtReader::VisitFloatingLiteral(FloatingLiteral *E) {
604   VisitExpr(E);
605   E->setRawSemantics(
606       static_cast<llvm::APFloatBase::Semantics>(Record.readInt()));
607   E->setExact(Record.readInt());
608   E->setValue(Record.getContext(), Record.readAPFloat(E->getSemantics()));
609   E->setLocation(ReadSourceLocation());
610 }
611 
612 void ASTStmtReader::VisitImaginaryLiteral(ImaginaryLiteral *E) {
613   VisitExpr(E);
614   E->setSubExpr(Record.readSubExpr());
615 }
616 
617 void ASTStmtReader::VisitStringLiteral(StringLiteral *E) {
618   VisitExpr(E);
619 
620   // NumConcatenated, Length and CharByteWidth are set by the empty
621   // ctor since they are needed to allocate storage for the trailing objects.
622   unsigned NumConcatenated = Record.readInt();
623   unsigned Length = Record.readInt();
624   unsigned CharByteWidth = Record.readInt();
625   assert((NumConcatenated == E->getNumConcatenated()) &&
626          "Wrong number of concatenated tokens!");
627   assert((Length == E->getLength()) && "Wrong Length!");
628   assert((CharByteWidth == E->getCharByteWidth()) && "Wrong character width!");
629   E->StringLiteralBits.Kind = Record.readInt();
630   E->StringLiteralBits.IsPascal = Record.readInt();
631 
632   // The character width is originally computed via mapCharByteWidth.
633   // Check that the deserialized character width is consistant with the result
634   // of calling mapCharByteWidth.
635   assert((CharByteWidth ==
636           StringLiteral::mapCharByteWidth(Record.getContext().getTargetInfo(),
637                                           E->getKind())) &&
638          "Wrong character width!");
639 
640   // Deserialize the trailing array of SourceLocation.
641   for (unsigned I = 0; I < NumConcatenated; ++I)
642     E->setStrTokenLoc(I, ReadSourceLocation());
643 
644   // Deserialize the trailing array of char holding the string data.
645   char *StrData = E->getStrDataAsChar();
646   for (unsigned I = 0; I < Length * CharByteWidth; ++I)
647     StrData[I] = Record.readInt();
648 }
649 
650 void ASTStmtReader::VisitCharacterLiteral(CharacterLiteral *E) {
651   VisitExpr(E);
652   E->setValue(Record.readInt());
653   E->setLocation(ReadSourceLocation());
654   E->setKind(static_cast<CharacterLiteral::CharacterKind>(Record.readInt()));
655 }
656 
657 void ASTStmtReader::VisitParenExpr(ParenExpr *E) {
658   VisitExpr(E);
659   E->setLParen(ReadSourceLocation());
660   E->setRParen(ReadSourceLocation());
661   E->setSubExpr(Record.readSubExpr());
662 }
663 
664 void ASTStmtReader::VisitParenListExpr(ParenListExpr *E) {
665   VisitExpr(E);
666   unsigned NumExprs = Record.readInt();
667   assert((NumExprs == E->getNumExprs()) && "Wrong NumExprs!");
668   for (unsigned I = 0; I != NumExprs; ++I)
669     E->getTrailingObjects<Stmt *>()[I] = Record.readSubStmt();
670   E->LParenLoc = ReadSourceLocation();
671   E->RParenLoc = ReadSourceLocation();
672 }
673 
674 void ASTStmtReader::VisitUnaryOperator(UnaryOperator *E) {
675   VisitExpr(E);
676   E->setSubExpr(Record.readSubExpr());
677   E->setOpcode((UnaryOperator::Opcode)Record.readInt());
678   E->setOperatorLoc(ReadSourceLocation());
679   E->setCanOverflow(Record.readInt());
680 }
681 
682 void ASTStmtReader::VisitOffsetOfExpr(OffsetOfExpr *E) {
683   VisitExpr(E);
684   assert(E->getNumComponents() == Record.peekInt());
685   Record.skipInts(1);
686   assert(E->getNumExpressions() == Record.peekInt());
687   Record.skipInts(1);
688   E->setOperatorLoc(ReadSourceLocation());
689   E->setRParenLoc(ReadSourceLocation());
690   E->setTypeSourceInfo(GetTypeSourceInfo());
691   for (unsigned I = 0, N = E->getNumComponents(); I != N; ++I) {
692     auto Kind = static_cast<OffsetOfNode::Kind>(Record.readInt());
693     SourceLocation Start = ReadSourceLocation();
694     SourceLocation End = ReadSourceLocation();
695     switch (Kind) {
696     case OffsetOfNode::Array:
697       E->setComponent(I, OffsetOfNode(Start, Record.readInt(), End));
698       break;
699 
700     case OffsetOfNode::Field:
701       E->setComponent(
702           I, OffsetOfNode(Start, ReadDeclAs<FieldDecl>(), End));
703       break;
704 
705     case OffsetOfNode::Identifier:
706       E->setComponent(
707           I,
708           OffsetOfNode(Start, Record.getIdentifierInfo(), End));
709       break;
710 
711     case OffsetOfNode::Base: {
712       auto *Base = new (Record.getContext()) CXXBaseSpecifier();
713       *Base = Record.readCXXBaseSpecifier();
714       E->setComponent(I, OffsetOfNode(Base));
715       break;
716     }
717     }
718   }
719 
720   for (unsigned I = 0, N = E->getNumExpressions(); I != N; ++I)
721     E->setIndexExpr(I, Record.readSubExpr());
722 }
723 
724 void ASTStmtReader::VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *E) {
725   VisitExpr(E);
726   E->setKind(static_cast<UnaryExprOrTypeTrait>(Record.readInt()));
727   if (Record.peekInt() == 0) {
728     E->setArgument(Record.readSubExpr());
729     Record.skipInts(1);
730   } else {
731     E->setArgument(GetTypeSourceInfo());
732   }
733   E->setOperatorLoc(ReadSourceLocation());
734   E->setRParenLoc(ReadSourceLocation());
735 }
736 
737 void ASTStmtReader::VisitArraySubscriptExpr(ArraySubscriptExpr *E) {
738   VisitExpr(E);
739   E->setLHS(Record.readSubExpr());
740   E->setRHS(Record.readSubExpr());
741   E->setRBracketLoc(ReadSourceLocation());
742 }
743 
744 void ASTStmtReader::VisitOMPArraySectionExpr(OMPArraySectionExpr *E) {
745   VisitExpr(E);
746   E->setBase(Record.readSubExpr());
747   E->setLowerBound(Record.readSubExpr());
748   E->setLength(Record.readSubExpr());
749   E->setColonLoc(ReadSourceLocation());
750   E->setRBracketLoc(ReadSourceLocation());
751 }
752 
753 void ASTStmtReader::VisitCallExpr(CallExpr *E) {
754   VisitExpr(E);
755   unsigned NumArgs = Record.readInt();
756   assert((NumArgs == E->getNumArgs()) && "Wrong NumArgs!");
757   E->setRParenLoc(ReadSourceLocation());
758   E->setCallee(Record.readSubExpr());
759   for (unsigned I = 0; I != NumArgs; ++I)
760     E->setArg(I, Record.readSubExpr());
761   E->setADLCallKind(static_cast<CallExpr::ADLCallKind>(Record.readInt()));
762 }
763 
764 void ASTStmtReader::VisitCXXMemberCallExpr(CXXMemberCallExpr *E) {
765   VisitCallExpr(E);
766 }
767 
768 void ASTStmtReader::VisitMemberExpr(MemberExpr *E) {
769   VisitExpr(E);
770 
771   bool HasQualifier = Record.readInt();
772   bool HasFoundDecl = Record.readInt();
773   bool HasTemplateInfo = Record.readInt();
774   unsigned NumTemplateArgs = Record.readInt();
775 
776   E->Base = Record.readSubExpr();
777   E->MemberDecl = Record.readDeclAs<ValueDecl>();
778   Record.readDeclarationNameLoc(E->MemberDNLoc, E->MemberDecl->getDeclName());
779   E->MemberLoc = Record.readSourceLocation();
780   E->MemberExprBits.IsArrow = Record.readInt();
781   E->MemberExprBits.HasQualifierOrFoundDecl = HasQualifier || HasFoundDecl;
782   E->MemberExprBits.HasTemplateKWAndArgsInfo = HasTemplateInfo;
783   E->MemberExprBits.HadMultipleCandidates = Record.readInt();
784   E->MemberExprBits.NonOdrUseReason = Record.readInt();
785   E->MemberExprBits.OperatorLoc = Record.readSourceLocation();
786 
787   if (HasQualifier || HasFoundDecl) {
788     DeclAccessPair FoundDecl;
789     if (HasFoundDecl) {
790       auto *FoundD = Record.readDeclAs<NamedDecl>();
791       auto AS = (AccessSpecifier)Record.readInt();
792       FoundDecl = DeclAccessPair::make(FoundD, AS);
793     } else {
794       FoundDecl = DeclAccessPair::make(E->MemberDecl,
795                                        E->MemberDecl->getAccess());
796     }
797     E->getTrailingObjects<MemberExprNameQualifier>()->FoundDecl = FoundDecl;
798 
799     NestedNameSpecifierLoc QualifierLoc;
800     if (HasQualifier)
801       QualifierLoc = Record.readNestedNameSpecifierLoc();
802     E->getTrailingObjects<MemberExprNameQualifier>()->QualifierLoc =
803         QualifierLoc;
804   }
805 
806   if (HasTemplateInfo)
807     ReadTemplateKWAndArgsInfo(
808         *E->getTrailingObjects<ASTTemplateKWAndArgsInfo>(),
809         E->getTrailingObjects<TemplateArgumentLoc>(), NumTemplateArgs);
810 }
811 
812 void ASTStmtReader::VisitObjCIsaExpr(ObjCIsaExpr *E) {
813   VisitExpr(E);
814   E->setBase(Record.readSubExpr());
815   E->setIsaMemberLoc(ReadSourceLocation());
816   E->setOpLoc(ReadSourceLocation());
817   E->setArrow(Record.readInt());
818 }
819 
820 void ASTStmtReader::
821 VisitObjCIndirectCopyRestoreExpr(ObjCIndirectCopyRestoreExpr *E) {
822   VisitExpr(E);
823   E->Operand = Record.readSubExpr();
824   E->setShouldCopy(Record.readInt());
825 }
826 
827 void ASTStmtReader::VisitObjCBridgedCastExpr(ObjCBridgedCastExpr *E) {
828   VisitExplicitCastExpr(E);
829   E->LParenLoc = ReadSourceLocation();
830   E->BridgeKeywordLoc = ReadSourceLocation();
831   E->Kind = Record.readInt();
832 }
833 
834 void ASTStmtReader::VisitCastExpr(CastExpr *E) {
835   VisitExpr(E);
836   unsigned NumBaseSpecs = Record.readInt();
837   assert(NumBaseSpecs == E->path_size());
838   E->setSubExpr(Record.readSubExpr());
839   E->setCastKind((CastKind)Record.readInt());
840   CastExpr::path_iterator BaseI = E->path_begin();
841   while (NumBaseSpecs--) {
842     auto *BaseSpec = new (Record.getContext()) CXXBaseSpecifier;
843     *BaseSpec = Record.readCXXBaseSpecifier();
844     *BaseI++ = BaseSpec;
845   }
846 }
847 
848 void ASTStmtReader::VisitBinaryOperator(BinaryOperator *E) {
849   VisitExpr(E);
850   E->setLHS(Record.readSubExpr());
851   E->setRHS(Record.readSubExpr());
852   E->setOpcode((BinaryOperator::Opcode)Record.readInt());
853   E->setOperatorLoc(ReadSourceLocation());
854   E->setFPFeatures(FPOptions(Record.readInt()));
855 }
856 
857 void ASTStmtReader::VisitCompoundAssignOperator(CompoundAssignOperator *E) {
858   VisitBinaryOperator(E);
859   E->setComputationLHSType(Record.readType());
860   E->setComputationResultType(Record.readType());
861 }
862 
863 void ASTStmtReader::VisitConditionalOperator(ConditionalOperator *E) {
864   VisitExpr(E);
865   E->SubExprs[ConditionalOperator::COND] = Record.readSubExpr();
866   E->SubExprs[ConditionalOperator::LHS] = Record.readSubExpr();
867   E->SubExprs[ConditionalOperator::RHS] = Record.readSubExpr();
868   E->QuestionLoc = ReadSourceLocation();
869   E->ColonLoc = ReadSourceLocation();
870 }
871 
872 void
873 ASTStmtReader::VisitBinaryConditionalOperator(BinaryConditionalOperator *E) {
874   VisitExpr(E);
875   E->OpaqueValue = cast<OpaqueValueExpr>(Record.readSubExpr());
876   E->SubExprs[BinaryConditionalOperator::COMMON] = Record.readSubExpr();
877   E->SubExprs[BinaryConditionalOperator::COND] = Record.readSubExpr();
878   E->SubExprs[BinaryConditionalOperator::LHS] = Record.readSubExpr();
879   E->SubExprs[BinaryConditionalOperator::RHS] = Record.readSubExpr();
880   E->QuestionLoc = ReadSourceLocation();
881   E->ColonLoc = ReadSourceLocation();
882 }
883 
884 void ASTStmtReader::VisitImplicitCastExpr(ImplicitCastExpr *E) {
885   VisitCastExpr(E);
886   E->setIsPartOfExplicitCast(Record.readInt());
887 }
888 
889 void ASTStmtReader::VisitExplicitCastExpr(ExplicitCastExpr *E) {
890   VisitCastExpr(E);
891   E->setTypeInfoAsWritten(GetTypeSourceInfo());
892 }
893 
894 void ASTStmtReader::VisitCStyleCastExpr(CStyleCastExpr *E) {
895   VisitExplicitCastExpr(E);
896   E->setLParenLoc(ReadSourceLocation());
897   E->setRParenLoc(ReadSourceLocation());
898 }
899 
900 void ASTStmtReader::VisitCompoundLiteralExpr(CompoundLiteralExpr *E) {
901   VisitExpr(E);
902   E->setLParenLoc(ReadSourceLocation());
903   E->setTypeSourceInfo(GetTypeSourceInfo());
904   E->setInitializer(Record.readSubExpr());
905   E->setFileScope(Record.readInt());
906 }
907 
908 void ASTStmtReader::VisitExtVectorElementExpr(ExtVectorElementExpr *E) {
909   VisitExpr(E);
910   E->setBase(Record.readSubExpr());
911   E->setAccessor(Record.getIdentifierInfo());
912   E->setAccessorLoc(ReadSourceLocation());
913 }
914 
915 void ASTStmtReader::VisitInitListExpr(InitListExpr *E) {
916   VisitExpr(E);
917   if (auto *SyntForm = cast_or_null<InitListExpr>(Record.readSubStmt()))
918     E->setSyntacticForm(SyntForm);
919   E->setLBraceLoc(ReadSourceLocation());
920   E->setRBraceLoc(ReadSourceLocation());
921   bool isArrayFiller = Record.readInt();
922   Expr *filler = nullptr;
923   if (isArrayFiller) {
924     filler = Record.readSubExpr();
925     E->ArrayFillerOrUnionFieldInit = filler;
926   } else
927     E->ArrayFillerOrUnionFieldInit = ReadDeclAs<FieldDecl>();
928   E->sawArrayRangeDesignator(Record.readInt());
929   unsigned NumInits = Record.readInt();
930   E->reserveInits(Record.getContext(), NumInits);
931   if (isArrayFiller) {
932     for (unsigned I = 0; I != NumInits; ++I) {
933       Expr *init = Record.readSubExpr();
934       E->updateInit(Record.getContext(), I, init ? init : filler);
935     }
936   } else {
937     for (unsigned I = 0; I != NumInits; ++I)
938       E->updateInit(Record.getContext(), I, Record.readSubExpr());
939   }
940 }
941 
942 void ASTStmtReader::VisitDesignatedInitExpr(DesignatedInitExpr *E) {
943   using Designator = DesignatedInitExpr::Designator;
944 
945   VisitExpr(E);
946   unsigned NumSubExprs = Record.readInt();
947   assert(NumSubExprs == E->getNumSubExprs() && "Wrong number of subexprs");
948   for (unsigned I = 0; I != NumSubExprs; ++I)
949     E->setSubExpr(I, Record.readSubExpr());
950   E->setEqualOrColonLoc(ReadSourceLocation());
951   E->setGNUSyntax(Record.readInt());
952 
953   SmallVector<Designator, 4> Designators;
954   while (Record.getIdx() < Record.size()) {
955     switch ((DesignatorTypes)Record.readInt()) {
956     case DESIG_FIELD_DECL: {
957       auto *Field = ReadDeclAs<FieldDecl>();
958       SourceLocation DotLoc = ReadSourceLocation();
959       SourceLocation FieldLoc = ReadSourceLocation();
960       Designators.push_back(Designator(Field->getIdentifier(), DotLoc,
961                                        FieldLoc));
962       Designators.back().setField(Field);
963       break;
964     }
965 
966     case DESIG_FIELD_NAME: {
967       const IdentifierInfo *Name = Record.getIdentifierInfo();
968       SourceLocation DotLoc = ReadSourceLocation();
969       SourceLocation FieldLoc = ReadSourceLocation();
970       Designators.push_back(Designator(Name, DotLoc, FieldLoc));
971       break;
972     }
973 
974     case DESIG_ARRAY: {
975       unsigned Index = Record.readInt();
976       SourceLocation LBracketLoc = ReadSourceLocation();
977       SourceLocation RBracketLoc = ReadSourceLocation();
978       Designators.push_back(Designator(Index, LBracketLoc, RBracketLoc));
979       break;
980     }
981 
982     case DESIG_ARRAY_RANGE: {
983       unsigned Index = Record.readInt();
984       SourceLocation LBracketLoc = ReadSourceLocation();
985       SourceLocation EllipsisLoc = ReadSourceLocation();
986       SourceLocation RBracketLoc = ReadSourceLocation();
987       Designators.push_back(Designator(Index, LBracketLoc, EllipsisLoc,
988                                        RBracketLoc));
989       break;
990     }
991     }
992   }
993   E->setDesignators(Record.getContext(),
994                     Designators.data(), Designators.size());
995 }
996 
997 void ASTStmtReader::VisitDesignatedInitUpdateExpr(DesignatedInitUpdateExpr *E) {
998   VisitExpr(E);
999   E->setBase(Record.readSubExpr());
1000   E->setUpdater(Record.readSubExpr());
1001 }
1002 
1003 void ASTStmtReader::VisitNoInitExpr(NoInitExpr *E) {
1004   VisitExpr(E);
1005 }
1006 
1007 void ASTStmtReader::VisitArrayInitLoopExpr(ArrayInitLoopExpr *E) {
1008   VisitExpr(E);
1009   E->SubExprs[0] = Record.readSubExpr();
1010   E->SubExprs[1] = Record.readSubExpr();
1011 }
1012 
1013 void ASTStmtReader::VisitArrayInitIndexExpr(ArrayInitIndexExpr *E) {
1014   VisitExpr(E);
1015 }
1016 
1017 void ASTStmtReader::VisitImplicitValueInitExpr(ImplicitValueInitExpr *E) {
1018   VisitExpr(E);
1019 }
1020 
1021 void ASTStmtReader::VisitVAArgExpr(VAArgExpr *E) {
1022   VisitExpr(E);
1023   E->setSubExpr(Record.readSubExpr());
1024   E->setWrittenTypeInfo(GetTypeSourceInfo());
1025   E->setBuiltinLoc(ReadSourceLocation());
1026   E->setRParenLoc(ReadSourceLocation());
1027   E->setIsMicrosoftABI(Record.readInt());
1028 }
1029 
1030 void ASTStmtReader::VisitSourceLocExpr(SourceLocExpr *E) {
1031   VisitExpr(E);
1032   E->ParentContext = ReadDeclAs<DeclContext>();
1033   E->BuiltinLoc = ReadSourceLocation();
1034   E->RParenLoc = ReadSourceLocation();
1035   E->SourceLocExprBits.Kind =
1036       static_cast<SourceLocExpr::IdentKind>(Record.readInt());
1037 }
1038 
1039 void ASTStmtReader::VisitAddrLabelExpr(AddrLabelExpr *E) {
1040   VisitExpr(E);
1041   E->setAmpAmpLoc(ReadSourceLocation());
1042   E->setLabelLoc(ReadSourceLocation());
1043   E->setLabel(ReadDeclAs<LabelDecl>());
1044 }
1045 
1046 void ASTStmtReader::VisitStmtExpr(StmtExpr *E) {
1047   VisitExpr(E);
1048   E->setLParenLoc(ReadSourceLocation());
1049   E->setRParenLoc(ReadSourceLocation());
1050   E->setSubStmt(cast_or_null<CompoundStmt>(Record.readSubStmt()));
1051 }
1052 
1053 void ASTStmtReader::VisitChooseExpr(ChooseExpr *E) {
1054   VisitExpr(E);
1055   E->setCond(Record.readSubExpr());
1056   E->setLHS(Record.readSubExpr());
1057   E->setRHS(Record.readSubExpr());
1058   E->setBuiltinLoc(ReadSourceLocation());
1059   E->setRParenLoc(ReadSourceLocation());
1060   E->setIsConditionTrue(Record.readInt());
1061 }
1062 
1063 void ASTStmtReader::VisitGNUNullExpr(GNUNullExpr *E) {
1064   VisitExpr(E);
1065   E->setTokenLocation(ReadSourceLocation());
1066 }
1067 
1068 void ASTStmtReader::VisitShuffleVectorExpr(ShuffleVectorExpr *E) {
1069   VisitExpr(E);
1070   SmallVector<Expr *, 16> Exprs;
1071   unsigned NumExprs = Record.readInt();
1072   while (NumExprs--)
1073     Exprs.push_back(Record.readSubExpr());
1074   E->setExprs(Record.getContext(), Exprs);
1075   E->setBuiltinLoc(ReadSourceLocation());
1076   E->setRParenLoc(ReadSourceLocation());
1077 }
1078 
1079 void ASTStmtReader::VisitConvertVectorExpr(ConvertVectorExpr *E) {
1080   VisitExpr(E);
1081   E->BuiltinLoc = ReadSourceLocation();
1082   E->RParenLoc = ReadSourceLocation();
1083   E->TInfo = GetTypeSourceInfo();
1084   E->SrcExpr = Record.readSubExpr();
1085 }
1086 
1087 void ASTStmtReader::VisitBlockExpr(BlockExpr *E) {
1088   VisitExpr(E);
1089   E->setBlockDecl(ReadDeclAs<BlockDecl>());
1090 }
1091 
1092 void ASTStmtReader::VisitGenericSelectionExpr(GenericSelectionExpr *E) {
1093   VisitExpr(E);
1094 
1095   unsigned NumAssocs = Record.readInt();
1096   assert(NumAssocs == E->getNumAssocs() && "Wrong NumAssocs!");
1097   E->ResultIndex = Record.readInt();
1098   E->GenericSelectionExprBits.GenericLoc = ReadSourceLocation();
1099   E->DefaultLoc = ReadSourceLocation();
1100   E->RParenLoc = ReadSourceLocation();
1101 
1102   Stmt **Stmts = E->getTrailingObjects<Stmt *>();
1103   // Add 1 to account for the controlling expression which is the first
1104   // expression in the trailing array of Stmt *. This is not needed for
1105   // the trailing array of TypeSourceInfo *.
1106   for (unsigned I = 0, N = NumAssocs + 1; I < N; ++I)
1107     Stmts[I] = Record.readSubExpr();
1108 
1109   TypeSourceInfo **TSIs = E->getTrailingObjects<TypeSourceInfo *>();
1110   for (unsigned I = 0, N = NumAssocs; I < N; ++I)
1111     TSIs[I] = GetTypeSourceInfo();
1112 }
1113 
1114 void ASTStmtReader::VisitPseudoObjectExpr(PseudoObjectExpr *E) {
1115   VisitExpr(E);
1116   unsigned numSemanticExprs = Record.readInt();
1117   assert(numSemanticExprs + 1 == E->PseudoObjectExprBits.NumSubExprs);
1118   E->PseudoObjectExprBits.ResultIndex = Record.readInt();
1119 
1120   // Read the syntactic expression.
1121   E->getSubExprsBuffer()[0] = Record.readSubExpr();
1122 
1123   // Read all the semantic expressions.
1124   for (unsigned i = 0; i != numSemanticExprs; ++i) {
1125     Expr *subExpr = Record.readSubExpr();
1126     E->getSubExprsBuffer()[i+1] = subExpr;
1127   }
1128 }
1129 
1130 void ASTStmtReader::VisitAtomicExpr(AtomicExpr *E) {
1131   VisitExpr(E);
1132   E->Op = AtomicExpr::AtomicOp(Record.readInt());
1133   E->NumSubExprs = AtomicExpr::getNumSubExprs(E->Op);
1134   for (unsigned I = 0; I != E->NumSubExprs; ++I)
1135     E->SubExprs[I] = Record.readSubExpr();
1136   E->BuiltinLoc = ReadSourceLocation();
1137   E->RParenLoc = ReadSourceLocation();
1138 }
1139 
1140 //===----------------------------------------------------------------------===//
1141 // Objective-C Expressions and Statements
1142 
1143 void ASTStmtReader::VisitObjCStringLiteral(ObjCStringLiteral *E) {
1144   VisitExpr(E);
1145   E->setString(cast<StringLiteral>(Record.readSubStmt()));
1146   E->setAtLoc(ReadSourceLocation());
1147 }
1148 
1149 void ASTStmtReader::VisitObjCBoxedExpr(ObjCBoxedExpr *E) {
1150   VisitExpr(E);
1151   // could be one of several IntegerLiteral, FloatLiteral, etc.
1152   E->SubExpr = Record.readSubStmt();
1153   E->BoxingMethod = ReadDeclAs<ObjCMethodDecl>();
1154   E->Range = ReadSourceRange();
1155 }
1156 
1157 void ASTStmtReader::VisitObjCArrayLiteral(ObjCArrayLiteral *E) {
1158   VisitExpr(E);
1159   unsigned NumElements = Record.readInt();
1160   assert(NumElements == E->getNumElements() && "Wrong number of elements");
1161   Expr **Elements = E->getElements();
1162   for (unsigned I = 0, N = NumElements; I != N; ++I)
1163     Elements[I] = Record.readSubExpr();
1164   E->ArrayWithObjectsMethod = ReadDeclAs<ObjCMethodDecl>();
1165   E->Range = ReadSourceRange();
1166 }
1167 
1168 void ASTStmtReader::VisitObjCDictionaryLiteral(ObjCDictionaryLiteral *E) {
1169   VisitExpr(E);
1170   unsigned NumElements = Record.readInt();
1171   assert(NumElements == E->getNumElements() && "Wrong number of elements");
1172   bool HasPackExpansions = Record.readInt();
1173   assert(HasPackExpansions == E->HasPackExpansions &&"Pack expansion mismatch");
1174   auto *KeyValues =
1175       E->getTrailingObjects<ObjCDictionaryLiteral::KeyValuePair>();
1176   auto *Expansions =
1177       E->getTrailingObjects<ObjCDictionaryLiteral::ExpansionData>();
1178   for (unsigned I = 0; I != NumElements; ++I) {
1179     KeyValues[I].Key = Record.readSubExpr();
1180     KeyValues[I].Value = Record.readSubExpr();
1181     if (HasPackExpansions) {
1182       Expansions[I].EllipsisLoc = ReadSourceLocation();
1183       Expansions[I].NumExpansionsPlusOne = Record.readInt();
1184     }
1185   }
1186   E->DictWithObjectsMethod = ReadDeclAs<ObjCMethodDecl>();
1187   E->Range = ReadSourceRange();
1188 }
1189 
1190 void ASTStmtReader::VisitObjCEncodeExpr(ObjCEncodeExpr *E) {
1191   VisitExpr(E);
1192   E->setEncodedTypeSourceInfo(GetTypeSourceInfo());
1193   E->setAtLoc(ReadSourceLocation());
1194   E->setRParenLoc(ReadSourceLocation());
1195 }
1196 
1197 void ASTStmtReader::VisitObjCSelectorExpr(ObjCSelectorExpr *E) {
1198   VisitExpr(E);
1199   E->setSelector(Record.readSelector());
1200   E->setAtLoc(ReadSourceLocation());
1201   E->setRParenLoc(ReadSourceLocation());
1202 }
1203 
1204 void ASTStmtReader::VisitObjCProtocolExpr(ObjCProtocolExpr *E) {
1205   VisitExpr(E);
1206   E->setProtocol(ReadDeclAs<ObjCProtocolDecl>());
1207   E->setAtLoc(ReadSourceLocation());
1208   E->ProtoLoc = ReadSourceLocation();
1209   E->setRParenLoc(ReadSourceLocation());
1210 }
1211 
1212 void ASTStmtReader::VisitObjCIvarRefExpr(ObjCIvarRefExpr *E) {
1213   VisitExpr(E);
1214   E->setDecl(ReadDeclAs<ObjCIvarDecl>());
1215   E->setLocation(ReadSourceLocation());
1216   E->setOpLoc(ReadSourceLocation());
1217   E->setBase(Record.readSubExpr());
1218   E->setIsArrow(Record.readInt());
1219   E->setIsFreeIvar(Record.readInt());
1220 }
1221 
1222 void ASTStmtReader::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *E) {
1223   VisitExpr(E);
1224   unsigned MethodRefFlags = Record.readInt();
1225   bool Implicit = Record.readInt() != 0;
1226   if (Implicit) {
1227     auto *Getter = ReadDeclAs<ObjCMethodDecl>();
1228     auto *Setter = ReadDeclAs<ObjCMethodDecl>();
1229     E->setImplicitProperty(Getter, Setter, MethodRefFlags);
1230   } else {
1231     E->setExplicitProperty(ReadDeclAs<ObjCPropertyDecl>(), MethodRefFlags);
1232   }
1233   E->setLocation(ReadSourceLocation());
1234   E->setReceiverLocation(ReadSourceLocation());
1235   switch (Record.readInt()) {
1236   case 0:
1237     E->setBase(Record.readSubExpr());
1238     break;
1239   case 1:
1240     E->setSuperReceiver(Record.readType());
1241     break;
1242   case 2:
1243     E->setClassReceiver(ReadDeclAs<ObjCInterfaceDecl>());
1244     break;
1245   }
1246 }
1247 
1248 void ASTStmtReader::VisitObjCSubscriptRefExpr(ObjCSubscriptRefExpr *E) {
1249   VisitExpr(E);
1250   E->setRBracket(ReadSourceLocation());
1251   E->setBaseExpr(Record.readSubExpr());
1252   E->setKeyExpr(Record.readSubExpr());
1253   E->GetAtIndexMethodDecl = ReadDeclAs<ObjCMethodDecl>();
1254   E->SetAtIndexMethodDecl = ReadDeclAs<ObjCMethodDecl>();
1255 }
1256 
1257 void ASTStmtReader::VisitObjCMessageExpr(ObjCMessageExpr *E) {
1258   VisitExpr(E);
1259   assert(Record.peekInt() == E->getNumArgs());
1260   Record.skipInts(1);
1261   unsigned NumStoredSelLocs = Record.readInt();
1262   E->SelLocsKind = Record.readInt();
1263   E->setDelegateInitCall(Record.readInt());
1264   E->IsImplicit = Record.readInt();
1265   auto Kind = static_cast<ObjCMessageExpr::ReceiverKind>(Record.readInt());
1266   switch (Kind) {
1267   case ObjCMessageExpr::Instance:
1268     E->setInstanceReceiver(Record.readSubExpr());
1269     break;
1270 
1271   case ObjCMessageExpr::Class:
1272     E->setClassReceiver(GetTypeSourceInfo());
1273     break;
1274 
1275   case ObjCMessageExpr::SuperClass:
1276   case ObjCMessageExpr::SuperInstance: {
1277     QualType T = Record.readType();
1278     SourceLocation SuperLoc = ReadSourceLocation();
1279     E->setSuper(SuperLoc, T, Kind == ObjCMessageExpr::SuperInstance);
1280     break;
1281   }
1282   }
1283 
1284   assert(Kind == E->getReceiverKind());
1285 
1286   if (Record.readInt())
1287     E->setMethodDecl(ReadDeclAs<ObjCMethodDecl>());
1288   else
1289     E->setSelector(Record.readSelector());
1290 
1291   E->LBracLoc = ReadSourceLocation();
1292   E->RBracLoc = ReadSourceLocation();
1293 
1294   for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
1295     E->setArg(I, Record.readSubExpr());
1296 
1297   SourceLocation *Locs = E->getStoredSelLocs();
1298   for (unsigned I = 0; I != NumStoredSelLocs; ++I)
1299     Locs[I] = ReadSourceLocation();
1300 }
1301 
1302 void ASTStmtReader::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
1303   VisitStmt(S);
1304   S->setElement(Record.readSubStmt());
1305   S->setCollection(Record.readSubExpr());
1306   S->setBody(Record.readSubStmt());
1307   S->setForLoc(ReadSourceLocation());
1308   S->setRParenLoc(ReadSourceLocation());
1309 }
1310 
1311 void ASTStmtReader::VisitObjCAtCatchStmt(ObjCAtCatchStmt *S) {
1312   VisitStmt(S);
1313   S->setCatchBody(Record.readSubStmt());
1314   S->setCatchParamDecl(ReadDeclAs<VarDecl>());
1315   S->setAtCatchLoc(ReadSourceLocation());
1316   S->setRParenLoc(ReadSourceLocation());
1317 }
1318 
1319 void ASTStmtReader::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S) {
1320   VisitStmt(S);
1321   S->setFinallyBody(Record.readSubStmt());
1322   S->setAtFinallyLoc(ReadSourceLocation());
1323 }
1324 
1325 void ASTStmtReader::VisitObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt *S) {
1326   VisitStmt(S); // FIXME: no test coverage.
1327   S->setSubStmt(Record.readSubStmt());
1328   S->setAtLoc(ReadSourceLocation());
1329 }
1330 
1331 void ASTStmtReader::VisitObjCAtTryStmt(ObjCAtTryStmt *S) {
1332   VisitStmt(S);
1333   assert(Record.peekInt() == S->getNumCatchStmts());
1334   Record.skipInts(1);
1335   bool HasFinally = Record.readInt();
1336   S->setTryBody(Record.readSubStmt());
1337   for (unsigned I = 0, N = S->getNumCatchStmts(); I != N; ++I)
1338     S->setCatchStmt(I, cast_or_null<ObjCAtCatchStmt>(Record.readSubStmt()));
1339 
1340   if (HasFinally)
1341     S->setFinallyStmt(Record.readSubStmt());
1342   S->setAtTryLoc(ReadSourceLocation());
1343 }
1344 
1345 void ASTStmtReader::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
1346   VisitStmt(S); // FIXME: no test coverage.
1347   S->setSynchExpr(Record.readSubStmt());
1348   S->setSynchBody(Record.readSubStmt());
1349   S->setAtSynchronizedLoc(ReadSourceLocation());
1350 }
1351 
1352 void ASTStmtReader::VisitObjCAtThrowStmt(ObjCAtThrowStmt *S) {
1353   VisitStmt(S); // FIXME: no test coverage.
1354   S->setThrowExpr(Record.readSubStmt());
1355   S->setThrowLoc(ReadSourceLocation());
1356 }
1357 
1358 void ASTStmtReader::VisitObjCBoolLiteralExpr(ObjCBoolLiteralExpr *E) {
1359   VisitExpr(E);
1360   E->setValue(Record.readInt());
1361   E->setLocation(ReadSourceLocation());
1362 }
1363 
1364 void ASTStmtReader::VisitObjCAvailabilityCheckExpr(ObjCAvailabilityCheckExpr *E) {
1365   VisitExpr(E);
1366   SourceRange R = Record.readSourceRange();
1367   E->AtLoc = R.getBegin();
1368   E->RParen = R.getEnd();
1369   E->VersionToCheck = Record.readVersionTuple();
1370 }
1371 
1372 //===----------------------------------------------------------------------===//
1373 // C++ Expressions and Statements
1374 //===----------------------------------------------------------------------===//
1375 
1376 void ASTStmtReader::VisitCXXCatchStmt(CXXCatchStmt *S) {
1377   VisitStmt(S);
1378   S->CatchLoc = ReadSourceLocation();
1379   S->ExceptionDecl = ReadDeclAs<VarDecl>();
1380   S->HandlerBlock = Record.readSubStmt();
1381 }
1382 
1383 void ASTStmtReader::VisitCXXTryStmt(CXXTryStmt *S) {
1384   VisitStmt(S);
1385   assert(Record.peekInt() == S->getNumHandlers() && "NumStmtFields is wrong ?");
1386   Record.skipInts(1);
1387   S->TryLoc = ReadSourceLocation();
1388   S->getStmts()[0] = Record.readSubStmt();
1389   for (unsigned i = 0, e = S->getNumHandlers(); i != e; ++i)
1390     S->getStmts()[i + 1] = Record.readSubStmt();
1391 }
1392 
1393 void ASTStmtReader::VisitCXXForRangeStmt(CXXForRangeStmt *S) {
1394   VisitStmt(S);
1395   S->ForLoc = ReadSourceLocation();
1396   S->CoawaitLoc = ReadSourceLocation();
1397   S->ColonLoc = ReadSourceLocation();
1398   S->RParenLoc = ReadSourceLocation();
1399   S->setInit(Record.readSubStmt());
1400   S->setRangeStmt(Record.readSubStmt());
1401   S->setBeginStmt(Record.readSubStmt());
1402   S->setEndStmt(Record.readSubStmt());
1403   S->setCond(Record.readSubExpr());
1404   S->setInc(Record.readSubExpr());
1405   S->setLoopVarStmt(Record.readSubStmt());
1406   S->setBody(Record.readSubStmt());
1407 }
1408 
1409 void ASTStmtReader::VisitMSDependentExistsStmt(MSDependentExistsStmt *S) {
1410   VisitStmt(S);
1411   S->KeywordLoc = ReadSourceLocation();
1412   S->IsIfExists = Record.readInt();
1413   S->QualifierLoc = Record.readNestedNameSpecifierLoc();
1414   ReadDeclarationNameInfo(S->NameInfo);
1415   S->SubStmt = Record.readSubStmt();
1416 }
1417 
1418 void ASTStmtReader::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E) {
1419   VisitCallExpr(E);
1420   E->CXXOperatorCallExprBits.OperatorKind = Record.readInt();
1421   E->CXXOperatorCallExprBits.FPFeatures = Record.readInt();
1422   E->Range = Record.readSourceRange();
1423 }
1424 
1425 void ASTStmtReader::VisitCXXConstructExpr(CXXConstructExpr *E) {
1426   VisitExpr(E);
1427 
1428   unsigned NumArgs = Record.readInt();
1429   assert((NumArgs == E->getNumArgs()) && "Wrong NumArgs!");
1430 
1431   E->CXXConstructExprBits.Elidable = Record.readInt();
1432   E->CXXConstructExprBits.HadMultipleCandidates = Record.readInt();
1433   E->CXXConstructExprBits.ListInitialization = Record.readInt();
1434   E->CXXConstructExprBits.StdInitListInitialization = Record.readInt();
1435   E->CXXConstructExprBits.ZeroInitialization = Record.readInt();
1436   E->CXXConstructExprBits.ConstructionKind = Record.readInt();
1437   E->CXXConstructExprBits.Loc = ReadSourceLocation();
1438   E->Constructor = ReadDeclAs<CXXConstructorDecl>();
1439   E->ParenOrBraceRange = ReadSourceRange();
1440 
1441   for (unsigned I = 0; I != NumArgs; ++I)
1442     E->setArg(I, Record.readSubExpr());
1443 }
1444 
1445 void ASTStmtReader::VisitCXXInheritedCtorInitExpr(CXXInheritedCtorInitExpr *E) {
1446   VisitExpr(E);
1447   E->Constructor = ReadDeclAs<CXXConstructorDecl>();
1448   E->Loc = ReadSourceLocation();
1449   E->ConstructsVirtualBase = Record.readInt();
1450   E->InheritedFromVirtualBase = Record.readInt();
1451 }
1452 
1453 void ASTStmtReader::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *E) {
1454   VisitCXXConstructExpr(E);
1455   E->TSI = GetTypeSourceInfo();
1456 }
1457 
1458 void ASTStmtReader::VisitLambdaExpr(LambdaExpr *E) {
1459   VisitExpr(E);
1460   unsigned NumCaptures = Record.readInt();
1461   assert(NumCaptures == E->NumCaptures);(void)NumCaptures;
1462   E->IntroducerRange = ReadSourceRange();
1463   E->CaptureDefault = static_cast<LambdaCaptureDefault>(Record.readInt());
1464   E->CaptureDefaultLoc = ReadSourceLocation();
1465   E->ExplicitParams = Record.readInt();
1466   E->ExplicitResultType = Record.readInt();
1467   E->ClosingBrace = ReadSourceLocation();
1468 
1469   // Read capture initializers.
1470   for (LambdaExpr::capture_init_iterator C = E->capture_init_begin(),
1471                                       CEnd = E->capture_init_end();
1472        C != CEnd; ++C)
1473     *C = Record.readSubExpr();
1474 }
1475 
1476 void
1477 ASTStmtReader::VisitCXXStdInitializerListExpr(CXXStdInitializerListExpr *E) {
1478   VisitExpr(E);
1479   E->SubExpr = Record.readSubExpr();
1480 }
1481 
1482 void ASTStmtReader::VisitCXXNamedCastExpr(CXXNamedCastExpr *E) {
1483   VisitExplicitCastExpr(E);
1484   SourceRange R = ReadSourceRange();
1485   E->Loc = R.getBegin();
1486   E->RParenLoc = R.getEnd();
1487   R = ReadSourceRange();
1488   E->AngleBrackets = R;
1489 }
1490 
1491 void ASTStmtReader::VisitCXXStaticCastExpr(CXXStaticCastExpr *E) {
1492   return VisitCXXNamedCastExpr(E);
1493 }
1494 
1495 void ASTStmtReader::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *E) {
1496   return VisitCXXNamedCastExpr(E);
1497 }
1498 
1499 void ASTStmtReader::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *E) {
1500   return VisitCXXNamedCastExpr(E);
1501 }
1502 
1503 void ASTStmtReader::VisitCXXConstCastExpr(CXXConstCastExpr *E) {
1504   return VisitCXXNamedCastExpr(E);
1505 }
1506 
1507 void ASTStmtReader::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *E) {
1508   VisitExplicitCastExpr(E);
1509   E->setLParenLoc(ReadSourceLocation());
1510   E->setRParenLoc(ReadSourceLocation());
1511 }
1512 
1513 void ASTStmtReader::VisitBuiltinBitCastExpr(BuiltinBitCastExpr *E) {
1514   VisitExplicitCastExpr(E);
1515   E->KWLoc = ReadSourceLocation();
1516   E->RParenLoc = ReadSourceLocation();
1517 }
1518 
1519 void ASTStmtReader::VisitUserDefinedLiteral(UserDefinedLiteral *E) {
1520   VisitCallExpr(E);
1521   E->UDSuffixLoc = ReadSourceLocation();
1522 }
1523 
1524 void ASTStmtReader::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *E) {
1525   VisitExpr(E);
1526   E->setValue(Record.readInt());
1527   E->setLocation(ReadSourceLocation());
1528 }
1529 
1530 void ASTStmtReader::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *E) {
1531   VisitExpr(E);
1532   E->setLocation(ReadSourceLocation());
1533 }
1534 
1535 void ASTStmtReader::VisitCXXTypeidExpr(CXXTypeidExpr *E) {
1536   VisitExpr(E);
1537   E->setSourceRange(ReadSourceRange());
1538   if (E->isTypeOperand()) { // typeid(int)
1539     E->setTypeOperandSourceInfo(
1540         GetTypeSourceInfo());
1541     return;
1542   }
1543 
1544   // typeid(42+2)
1545   E->setExprOperand(Record.readSubExpr());
1546 }
1547 
1548 void ASTStmtReader::VisitCXXThisExpr(CXXThisExpr *E) {
1549   VisitExpr(E);
1550   E->setLocation(ReadSourceLocation());
1551   E->setImplicit(Record.readInt());
1552 }
1553 
1554 void ASTStmtReader::VisitCXXThrowExpr(CXXThrowExpr *E) {
1555   VisitExpr(E);
1556   E->CXXThrowExprBits.ThrowLoc = ReadSourceLocation();
1557   E->Operand = Record.readSubExpr();
1558   E->CXXThrowExprBits.IsThrownVariableInScope = Record.readInt();
1559 }
1560 
1561 void ASTStmtReader::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *E) {
1562   VisitExpr(E);
1563   E->Param = ReadDeclAs<ParmVarDecl>();
1564   E->UsedContext = ReadDeclAs<DeclContext>();
1565   E->CXXDefaultArgExprBits.Loc = ReadSourceLocation();
1566 }
1567 
1568 void ASTStmtReader::VisitCXXDefaultInitExpr(CXXDefaultInitExpr *E) {
1569   VisitExpr(E);
1570   E->Field = ReadDeclAs<FieldDecl>();
1571   E->UsedContext = ReadDeclAs<DeclContext>();
1572   E->CXXDefaultInitExprBits.Loc = ReadSourceLocation();
1573 }
1574 
1575 void ASTStmtReader::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *E) {
1576   VisitExpr(E);
1577   E->setTemporary(Record.readCXXTemporary());
1578   E->setSubExpr(Record.readSubExpr());
1579 }
1580 
1581 void ASTStmtReader::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E) {
1582   VisitExpr(E);
1583   E->TypeInfo = GetTypeSourceInfo();
1584   E->CXXScalarValueInitExprBits.RParenLoc = ReadSourceLocation();
1585 }
1586 
1587 void ASTStmtReader::VisitCXXNewExpr(CXXNewExpr *E) {
1588   VisitExpr(E);
1589 
1590   bool IsArray = Record.readInt();
1591   bool HasInit = Record.readInt();
1592   unsigned NumPlacementArgs = Record.readInt();
1593   bool IsParenTypeId = Record.readInt();
1594 
1595   E->CXXNewExprBits.IsGlobalNew = Record.readInt();
1596   E->CXXNewExprBits.ShouldPassAlignment = Record.readInt();
1597   E->CXXNewExprBits.UsualArrayDeleteWantsSize = Record.readInt();
1598   E->CXXNewExprBits.StoredInitializationStyle = Record.readInt();
1599 
1600   assert((IsArray == E->isArray()) && "Wrong IsArray!");
1601   assert((HasInit == E->hasInitializer()) && "Wrong HasInit!");
1602   assert((NumPlacementArgs == E->getNumPlacementArgs()) &&
1603          "Wrong NumPlacementArgs!");
1604   assert((IsParenTypeId == E->isParenTypeId()) && "Wrong IsParenTypeId!");
1605   (void)IsArray;
1606   (void)HasInit;
1607   (void)NumPlacementArgs;
1608 
1609   E->setOperatorNew(ReadDeclAs<FunctionDecl>());
1610   E->setOperatorDelete(ReadDeclAs<FunctionDecl>());
1611   E->AllocatedTypeInfo = GetTypeSourceInfo();
1612   if (IsParenTypeId)
1613     E->getTrailingObjects<SourceRange>()[0] = ReadSourceRange();
1614   E->Range = ReadSourceRange();
1615   E->DirectInitRange = ReadSourceRange();
1616 
1617   // Install all the subexpressions.
1618   for (CXXNewExpr::raw_arg_iterator I = E->raw_arg_begin(),
1619                                     N = E->raw_arg_end();
1620        I != N; ++I)
1621     *I = Record.readSubStmt();
1622 }
1623 
1624 void ASTStmtReader::VisitCXXDeleteExpr(CXXDeleteExpr *E) {
1625   VisitExpr(E);
1626   E->CXXDeleteExprBits.GlobalDelete = Record.readInt();
1627   E->CXXDeleteExprBits.ArrayForm = Record.readInt();
1628   E->CXXDeleteExprBits.ArrayFormAsWritten = Record.readInt();
1629   E->CXXDeleteExprBits.UsualArrayDeleteWantsSize = Record.readInt();
1630   E->OperatorDelete = ReadDeclAs<FunctionDecl>();
1631   E->Argument = Record.readSubExpr();
1632   E->CXXDeleteExprBits.Loc = ReadSourceLocation();
1633 }
1634 
1635 void ASTStmtReader::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E) {
1636   VisitExpr(E);
1637 
1638   E->Base = Record.readSubExpr();
1639   E->IsArrow = Record.readInt();
1640   E->OperatorLoc = ReadSourceLocation();
1641   E->QualifierLoc = Record.readNestedNameSpecifierLoc();
1642   E->ScopeType = GetTypeSourceInfo();
1643   E->ColonColonLoc = ReadSourceLocation();
1644   E->TildeLoc = ReadSourceLocation();
1645 
1646   IdentifierInfo *II = Record.getIdentifierInfo();
1647   if (II)
1648     E->setDestroyedType(II, ReadSourceLocation());
1649   else
1650     E->setDestroyedType(GetTypeSourceInfo());
1651 }
1652 
1653 void ASTStmtReader::VisitExprWithCleanups(ExprWithCleanups *E) {
1654   VisitExpr(E);
1655 
1656   unsigned NumObjects = Record.readInt();
1657   assert(NumObjects == E->getNumObjects());
1658   for (unsigned i = 0; i != NumObjects; ++i)
1659     E->getTrailingObjects<BlockDecl *>()[i] =
1660         ReadDeclAs<BlockDecl>();
1661 
1662   E->ExprWithCleanupsBits.CleanupsHaveSideEffects = Record.readInt();
1663   E->SubExpr = Record.readSubExpr();
1664 }
1665 
1666 void ASTStmtReader::VisitCXXDependentScopeMemberExpr(
1667     CXXDependentScopeMemberExpr *E) {
1668   VisitExpr(E);
1669 
1670   bool HasTemplateKWAndArgsInfo = Record.readInt();
1671   unsigned NumTemplateArgs = Record.readInt();
1672   bool HasFirstQualifierFoundInScope = Record.readInt();
1673 
1674   assert((HasTemplateKWAndArgsInfo == E->hasTemplateKWAndArgsInfo()) &&
1675          "Wrong HasTemplateKWAndArgsInfo!");
1676   assert(
1677       (HasFirstQualifierFoundInScope == E->hasFirstQualifierFoundInScope()) &&
1678       "Wrong HasFirstQualifierFoundInScope!");
1679 
1680   if (HasTemplateKWAndArgsInfo)
1681     ReadTemplateKWAndArgsInfo(
1682         *E->getTrailingObjects<ASTTemplateKWAndArgsInfo>(),
1683         E->getTrailingObjects<TemplateArgumentLoc>(), NumTemplateArgs);
1684 
1685   assert((NumTemplateArgs == E->getNumTemplateArgs()) &&
1686          "Wrong NumTemplateArgs!");
1687 
1688   E->CXXDependentScopeMemberExprBits.IsArrow = Record.readInt();
1689   E->CXXDependentScopeMemberExprBits.OperatorLoc = ReadSourceLocation();
1690   E->BaseType = Record.readType();
1691   E->QualifierLoc = Record.readNestedNameSpecifierLoc();
1692   E->Base = Record.readSubExpr();
1693 
1694   if (HasFirstQualifierFoundInScope)
1695     *E->getTrailingObjects<NamedDecl *>() = ReadDeclAs<NamedDecl>();
1696 
1697   ReadDeclarationNameInfo(E->MemberNameInfo);
1698 }
1699 
1700 void
1701 ASTStmtReader::VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *E) {
1702   VisitExpr(E);
1703 
1704   if (Record.readInt()) // HasTemplateKWAndArgsInfo
1705     ReadTemplateKWAndArgsInfo(
1706         *E->getTrailingObjects<ASTTemplateKWAndArgsInfo>(),
1707         E->getTrailingObjects<TemplateArgumentLoc>(),
1708         /*NumTemplateArgs=*/Record.readInt());
1709 
1710   E->QualifierLoc = Record.readNestedNameSpecifierLoc();
1711   ReadDeclarationNameInfo(E->NameInfo);
1712 }
1713 
1714 void
1715 ASTStmtReader::VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *E) {
1716   VisitExpr(E);
1717   assert(Record.peekInt() == E->arg_size() &&
1718          "Read wrong record during creation ?");
1719   Record.skipInts(1);
1720   for (unsigned I = 0, N = E->arg_size(); I != N; ++I)
1721     E->setArg(I, Record.readSubExpr());
1722   E->TSI = GetTypeSourceInfo();
1723   E->setLParenLoc(ReadSourceLocation());
1724   E->setRParenLoc(ReadSourceLocation());
1725 }
1726 
1727 void ASTStmtReader::VisitOverloadExpr(OverloadExpr *E) {
1728   VisitExpr(E);
1729 
1730   unsigned NumResults = Record.readInt();
1731   bool HasTemplateKWAndArgsInfo = Record.readInt();
1732   assert((E->getNumDecls() == NumResults) && "Wrong NumResults!");
1733   assert((E->hasTemplateKWAndArgsInfo() == HasTemplateKWAndArgsInfo) &&
1734          "Wrong HasTemplateKWAndArgsInfo!");
1735 
1736   if (HasTemplateKWAndArgsInfo) {
1737     unsigned NumTemplateArgs = Record.readInt();
1738     ReadTemplateKWAndArgsInfo(*E->getTrailingASTTemplateKWAndArgsInfo(),
1739                               E->getTrailingTemplateArgumentLoc(),
1740                               NumTemplateArgs);
1741     assert((E->getNumTemplateArgs() == NumTemplateArgs) &&
1742            "Wrong NumTemplateArgs!");
1743   }
1744 
1745   UnresolvedSet<8> Decls;
1746   for (unsigned I = 0; I != NumResults; ++I) {
1747     auto *D = ReadDeclAs<NamedDecl>();
1748     auto AS = (AccessSpecifier)Record.readInt();
1749     Decls.addDecl(D, AS);
1750   }
1751 
1752   DeclAccessPair *Results = E->getTrailingResults();
1753   UnresolvedSetIterator Iter = Decls.begin();
1754   for (unsigned I = 0; I != NumResults; ++I) {
1755     Results[I] = (Iter + I).getPair();
1756   }
1757 
1758   ReadDeclarationNameInfo(E->NameInfo);
1759   E->QualifierLoc = Record.readNestedNameSpecifierLoc();
1760 }
1761 
1762 void ASTStmtReader::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *E) {
1763   VisitOverloadExpr(E);
1764   E->UnresolvedMemberExprBits.IsArrow = Record.readInt();
1765   E->UnresolvedMemberExprBits.HasUnresolvedUsing = Record.readInt();
1766   E->Base = Record.readSubExpr();
1767   E->BaseType = Record.readType();
1768   E->OperatorLoc = ReadSourceLocation();
1769 }
1770 
1771 void ASTStmtReader::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *E) {
1772   VisitOverloadExpr(E);
1773   E->UnresolvedLookupExprBits.RequiresADL = Record.readInt();
1774   E->UnresolvedLookupExprBits.Overloaded = Record.readInt();
1775   E->NamingClass = ReadDeclAs<CXXRecordDecl>();
1776 }
1777 
1778 void ASTStmtReader::VisitTypeTraitExpr(TypeTraitExpr *E) {
1779   VisitExpr(E);
1780   E->TypeTraitExprBits.NumArgs = Record.readInt();
1781   E->TypeTraitExprBits.Kind = Record.readInt();
1782   E->TypeTraitExprBits.Value = Record.readInt();
1783   SourceRange Range = ReadSourceRange();
1784   E->Loc = Range.getBegin();
1785   E->RParenLoc = Range.getEnd();
1786 
1787   auto **Args = E->getTrailingObjects<TypeSourceInfo *>();
1788   for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
1789     Args[I] = GetTypeSourceInfo();
1790 }
1791 
1792 void ASTStmtReader::VisitArrayTypeTraitExpr(ArrayTypeTraitExpr *E) {
1793   VisitExpr(E);
1794   E->ATT = (ArrayTypeTrait)Record.readInt();
1795   E->Value = (unsigned int)Record.readInt();
1796   SourceRange Range = ReadSourceRange();
1797   E->Loc = Range.getBegin();
1798   E->RParen = Range.getEnd();
1799   E->QueriedType = GetTypeSourceInfo();
1800   E->Dimension = Record.readSubExpr();
1801 }
1802 
1803 void ASTStmtReader::VisitExpressionTraitExpr(ExpressionTraitExpr *E) {
1804   VisitExpr(E);
1805   E->ET = (ExpressionTrait)Record.readInt();
1806   E->Value = (bool)Record.readInt();
1807   SourceRange Range = ReadSourceRange();
1808   E->QueriedExpression = Record.readSubExpr();
1809   E->Loc = Range.getBegin();
1810   E->RParen = Range.getEnd();
1811 }
1812 
1813 void ASTStmtReader::VisitCXXNoexceptExpr(CXXNoexceptExpr *E) {
1814   VisitExpr(E);
1815   E->CXXNoexceptExprBits.Value = Record.readInt();
1816   E->Range = ReadSourceRange();
1817   E->Operand = Record.readSubExpr();
1818 }
1819 
1820 void ASTStmtReader::VisitPackExpansionExpr(PackExpansionExpr *E) {
1821   VisitExpr(E);
1822   E->EllipsisLoc = ReadSourceLocation();
1823   E->NumExpansions = Record.readInt();
1824   E->Pattern = Record.readSubExpr();
1825 }
1826 
1827 void ASTStmtReader::VisitSizeOfPackExpr(SizeOfPackExpr *E) {
1828   VisitExpr(E);
1829   unsigned NumPartialArgs = Record.readInt();
1830   E->OperatorLoc = ReadSourceLocation();
1831   E->PackLoc = ReadSourceLocation();
1832   E->RParenLoc = ReadSourceLocation();
1833   E->Pack = Record.readDeclAs<NamedDecl>();
1834   if (E->isPartiallySubstituted()) {
1835     assert(E->Length == NumPartialArgs);
1836     for (auto *I = E->getTrailingObjects<TemplateArgument>(),
1837               *E = I + NumPartialArgs;
1838          I != E; ++I)
1839       new (I) TemplateArgument(Record.readTemplateArgument());
1840   } else if (!E->isValueDependent()) {
1841     E->Length = Record.readInt();
1842   }
1843 }
1844 
1845 void ASTStmtReader::VisitSubstNonTypeTemplateParmExpr(
1846                                               SubstNonTypeTemplateParmExpr *E) {
1847   VisitExpr(E);
1848   E->Param = ReadDeclAs<NonTypeTemplateParmDecl>();
1849   E->SubstNonTypeTemplateParmExprBits.NameLoc = ReadSourceLocation();
1850   E->Replacement = Record.readSubExpr();
1851 }
1852 
1853 void ASTStmtReader::VisitSubstNonTypeTemplateParmPackExpr(
1854                                           SubstNonTypeTemplateParmPackExpr *E) {
1855   VisitExpr(E);
1856   E->Param = ReadDeclAs<NonTypeTemplateParmDecl>();
1857   TemplateArgument ArgPack = Record.readTemplateArgument();
1858   if (ArgPack.getKind() != TemplateArgument::Pack)
1859     return;
1860 
1861   E->Arguments = ArgPack.pack_begin();
1862   E->NumArguments = ArgPack.pack_size();
1863   E->NameLoc = ReadSourceLocation();
1864 }
1865 
1866 void ASTStmtReader::VisitFunctionParmPackExpr(FunctionParmPackExpr *E) {
1867   VisitExpr(E);
1868   E->NumParameters = Record.readInt();
1869   E->ParamPack = ReadDeclAs<ParmVarDecl>();
1870   E->NameLoc = ReadSourceLocation();
1871   auto **Parms = E->getTrailingObjects<VarDecl *>();
1872   for (unsigned i = 0, n = E->NumParameters; i != n; ++i)
1873     Parms[i] = ReadDeclAs<VarDecl>();
1874 }
1875 
1876 void ASTStmtReader::VisitMaterializeTemporaryExpr(MaterializeTemporaryExpr *E) {
1877   VisitExpr(E);
1878   E->State = Record.readSubExpr();
1879   auto *VD = ReadDeclAs<ValueDecl>();
1880   unsigned ManglingNumber = Record.readInt();
1881   E->setExtendingDecl(VD, ManglingNumber);
1882 }
1883 
1884 void ASTStmtReader::VisitCXXFoldExpr(CXXFoldExpr *E) {
1885   VisitExpr(E);
1886   E->LParenLoc = ReadSourceLocation();
1887   E->EllipsisLoc = ReadSourceLocation();
1888   E->RParenLoc = ReadSourceLocation();
1889   E->NumExpansions = Record.readInt();
1890   E->SubExprs[0] = Record.readSubExpr();
1891   E->SubExprs[1] = Record.readSubExpr();
1892   E->Opcode = (BinaryOperatorKind)Record.readInt();
1893 }
1894 
1895 void ASTStmtReader::VisitOpaqueValueExpr(OpaqueValueExpr *E) {
1896   VisitExpr(E);
1897   E->SourceExpr = Record.readSubExpr();
1898   E->OpaqueValueExprBits.Loc = ReadSourceLocation();
1899   E->setIsUnique(Record.readInt());
1900 }
1901 
1902 void ASTStmtReader::VisitTypoExpr(TypoExpr *E) {
1903   llvm_unreachable("Cannot read TypoExpr nodes");
1904 }
1905 
1906 //===----------------------------------------------------------------------===//
1907 // Microsoft Expressions and Statements
1908 //===----------------------------------------------------------------------===//
1909 void ASTStmtReader::VisitMSPropertyRefExpr(MSPropertyRefExpr *E) {
1910   VisitExpr(E);
1911   E->IsArrow = (Record.readInt() != 0);
1912   E->BaseExpr = Record.readSubExpr();
1913   E->QualifierLoc = Record.readNestedNameSpecifierLoc();
1914   E->MemberLoc = ReadSourceLocation();
1915   E->TheDecl = ReadDeclAs<MSPropertyDecl>();
1916 }
1917 
1918 void ASTStmtReader::VisitMSPropertySubscriptExpr(MSPropertySubscriptExpr *E) {
1919   VisitExpr(E);
1920   E->setBase(Record.readSubExpr());
1921   E->setIdx(Record.readSubExpr());
1922   E->setRBracketLoc(ReadSourceLocation());
1923 }
1924 
1925 void ASTStmtReader::VisitCXXUuidofExpr(CXXUuidofExpr *E) {
1926   VisitExpr(E);
1927   E->setSourceRange(ReadSourceRange());
1928   std::string UuidStr = ReadString();
1929   E->setUuidStr(StringRef(UuidStr).copy(Record.getContext()));
1930   if (E->isTypeOperand()) { // __uuidof(ComType)
1931     E->setTypeOperandSourceInfo(
1932         GetTypeSourceInfo());
1933     return;
1934   }
1935 
1936   // __uuidof(expr)
1937   E->setExprOperand(Record.readSubExpr());
1938 }
1939 
1940 void ASTStmtReader::VisitSEHLeaveStmt(SEHLeaveStmt *S) {
1941   VisitStmt(S);
1942   S->setLeaveLoc(ReadSourceLocation());
1943 }
1944 
1945 void ASTStmtReader::VisitSEHExceptStmt(SEHExceptStmt *S) {
1946   VisitStmt(S);
1947   S->Loc = ReadSourceLocation();
1948   S->Children[SEHExceptStmt::FILTER_EXPR] = Record.readSubStmt();
1949   S->Children[SEHExceptStmt::BLOCK] = Record.readSubStmt();
1950 }
1951 
1952 void ASTStmtReader::VisitSEHFinallyStmt(SEHFinallyStmt *S) {
1953   VisitStmt(S);
1954   S->Loc = ReadSourceLocation();
1955   S->Block = Record.readSubStmt();
1956 }
1957 
1958 void ASTStmtReader::VisitSEHTryStmt(SEHTryStmt *S) {
1959   VisitStmt(S);
1960   S->IsCXXTry = Record.readInt();
1961   S->TryLoc = ReadSourceLocation();
1962   S->Children[SEHTryStmt::TRY] = Record.readSubStmt();
1963   S->Children[SEHTryStmt::HANDLER] = Record.readSubStmt();
1964 }
1965 
1966 //===----------------------------------------------------------------------===//
1967 // CUDA Expressions and Statements
1968 //===----------------------------------------------------------------------===//
1969 
1970 void ASTStmtReader::VisitCUDAKernelCallExpr(CUDAKernelCallExpr *E) {
1971   VisitCallExpr(E);
1972   E->setPreArg(CUDAKernelCallExpr::CONFIG, Record.readSubExpr());
1973 }
1974 
1975 //===----------------------------------------------------------------------===//
1976 // OpenCL Expressions and Statements.
1977 //===----------------------------------------------------------------------===//
1978 void ASTStmtReader::VisitAsTypeExpr(AsTypeExpr *E) {
1979   VisitExpr(E);
1980   E->BuiltinLoc = ReadSourceLocation();
1981   E->RParenLoc = ReadSourceLocation();
1982   E->SrcExpr = Record.readSubExpr();
1983 }
1984 
1985 //===----------------------------------------------------------------------===//
1986 // OpenMP Directives.
1987 //===----------------------------------------------------------------------===//
1988 
1989 void ASTStmtReader::VisitOMPExecutableDirective(OMPExecutableDirective *E) {
1990   E->setLocStart(ReadSourceLocation());
1991   E->setLocEnd(ReadSourceLocation());
1992   OMPClauseReader ClauseReader(Record);
1993   SmallVector<OMPClause *, 5> Clauses;
1994   for (unsigned i = 0; i < E->getNumClauses(); ++i)
1995     Clauses.push_back(ClauseReader.readClause());
1996   E->setClauses(Clauses);
1997   if (E->hasAssociatedStmt())
1998     E->setAssociatedStmt(Record.readSubStmt());
1999 }
2000 
2001 void ASTStmtReader::VisitOMPLoopDirective(OMPLoopDirective *D) {
2002   VisitStmt(D);
2003   // Two fields (NumClauses and CollapsedNum) were read in ReadStmtFromStream.
2004   Record.skipInts(2);
2005   VisitOMPExecutableDirective(D);
2006   D->setIterationVariable(Record.readSubExpr());
2007   D->setLastIteration(Record.readSubExpr());
2008   D->setCalcLastIteration(Record.readSubExpr());
2009   D->setPreCond(Record.readSubExpr());
2010   D->setCond(Record.readSubExpr());
2011   D->setInit(Record.readSubExpr());
2012   D->setInc(Record.readSubExpr());
2013   D->setPreInits(Record.readSubStmt());
2014   if (isOpenMPWorksharingDirective(D->getDirectiveKind()) ||
2015       isOpenMPTaskLoopDirective(D->getDirectiveKind()) ||
2016       isOpenMPDistributeDirective(D->getDirectiveKind())) {
2017     D->setIsLastIterVariable(Record.readSubExpr());
2018     D->setLowerBoundVariable(Record.readSubExpr());
2019     D->setUpperBoundVariable(Record.readSubExpr());
2020     D->setStrideVariable(Record.readSubExpr());
2021     D->setEnsureUpperBound(Record.readSubExpr());
2022     D->setNextLowerBound(Record.readSubExpr());
2023     D->setNextUpperBound(Record.readSubExpr());
2024     D->setNumIterations(Record.readSubExpr());
2025   }
2026   if (isOpenMPLoopBoundSharingDirective(D->getDirectiveKind())) {
2027     D->setPrevLowerBoundVariable(Record.readSubExpr());
2028     D->setPrevUpperBoundVariable(Record.readSubExpr());
2029     D->setDistInc(Record.readSubExpr());
2030     D->setPrevEnsureUpperBound(Record.readSubExpr());
2031     D->setCombinedLowerBoundVariable(Record.readSubExpr());
2032     D->setCombinedUpperBoundVariable(Record.readSubExpr());
2033     D->setCombinedEnsureUpperBound(Record.readSubExpr());
2034     D->setCombinedInit(Record.readSubExpr());
2035     D->setCombinedCond(Record.readSubExpr());
2036     D->setCombinedNextLowerBound(Record.readSubExpr());
2037     D->setCombinedNextUpperBound(Record.readSubExpr());
2038     D->setCombinedDistCond(Record.readSubExpr());
2039     D->setCombinedParForInDistCond(Record.readSubExpr());
2040   }
2041   SmallVector<Expr *, 4> Sub;
2042   unsigned CollapsedNum = D->getCollapsedNumber();
2043   Sub.reserve(CollapsedNum);
2044   for (unsigned i = 0; i < CollapsedNum; ++i)
2045     Sub.push_back(Record.readSubExpr());
2046   D->setCounters(Sub);
2047   Sub.clear();
2048   for (unsigned i = 0; i < CollapsedNum; ++i)
2049     Sub.push_back(Record.readSubExpr());
2050   D->setPrivateCounters(Sub);
2051   Sub.clear();
2052   for (unsigned i = 0; i < CollapsedNum; ++i)
2053     Sub.push_back(Record.readSubExpr());
2054   D->setInits(Sub);
2055   Sub.clear();
2056   for (unsigned i = 0; i < CollapsedNum; ++i)
2057     Sub.push_back(Record.readSubExpr());
2058   D->setUpdates(Sub);
2059   Sub.clear();
2060   for (unsigned i = 0; i < CollapsedNum; ++i)
2061     Sub.push_back(Record.readSubExpr());
2062   D->setFinals(Sub);
2063   Sub.clear();
2064   for (unsigned i = 0; i < CollapsedNum; ++i)
2065     Sub.push_back(Record.readSubExpr());
2066   D->setDependentCounters(Sub);
2067   Sub.clear();
2068   for (unsigned i = 0; i < CollapsedNum; ++i)
2069     Sub.push_back(Record.readSubExpr());
2070   D->setDependentInits(Sub);
2071   Sub.clear();
2072   for (unsigned i = 0; i < CollapsedNum; ++i)
2073     Sub.push_back(Record.readSubExpr());
2074   D->setFinalsConditions(Sub);
2075 }
2076 
2077 void ASTStmtReader::VisitOMPParallelDirective(OMPParallelDirective *D) {
2078   VisitStmt(D);
2079   // The NumClauses field was read in ReadStmtFromStream.
2080   Record.skipInts(1);
2081   VisitOMPExecutableDirective(D);
2082   D->setHasCancel(Record.readInt());
2083 }
2084 
2085 void ASTStmtReader::VisitOMPSimdDirective(OMPSimdDirective *D) {
2086   VisitOMPLoopDirective(D);
2087 }
2088 
2089 void ASTStmtReader::VisitOMPForDirective(OMPForDirective *D) {
2090   VisitOMPLoopDirective(D);
2091   D->setHasCancel(Record.readInt());
2092 }
2093 
2094 void ASTStmtReader::VisitOMPForSimdDirective(OMPForSimdDirective *D) {
2095   VisitOMPLoopDirective(D);
2096 }
2097 
2098 void ASTStmtReader::VisitOMPSectionsDirective(OMPSectionsDirective *D) {
2099   VisitStmt(D);
2100   // The NumClauses field was read in ReadStmtFromStream.
2101   Record.skipInts(1);
2102   VisitOMPExecutableDirective(D);
2103   D->setHasCancel(Record.readInt());
2104 }
2105 
2106 void ASTStmtReader::VisitOMPSectionDirective(OMPSectionDirective *D) {
2107   VisitStmt(D);
2108   VisitOMPExecutableDirective(D);
2109   D->setHasCancel(Record.readInt());
2110 }
2111 
2112 void ASTStmtReader::VisitOMPSingleDirective(OMPSingleDirective *D) {
2113   VisitStmt(D);
2114   // The NumClauses field was read in ReadStmtFromStream.
2115   Record.skipInts(1);
2116   VisitOMPExecutableDirective(D);
2117 }
2118 
2119 void ASTStmtReader::VisitOMPMasterDirective(OMPMasterDirective *D) {
2120   VisitStmt(D);
2121   VisitOMPExecutableDirective(D);
2122 }
2123 
2124 void ASTStmtReader::VisitOMPCriticalDirective(OMPCriticalDirective *D) {
2125   VisitStmt(D);
2126   // The NumClauses field was read in ReadStmtFromStream.
2127   Record.skipInts(1);
2128   VisitOMPExecutableDirective(D);
2129   ReadDeclarationNameInfo(D->DirName);
2130 }
2131 
2132 void ASTStmtReader::VisitOMPParallelForDirective(OMPParallelForDirective *D) {
2133   VisitOMPLoopDirective(D);
2134   D->setHasCancel(Record.readInt());
2135 }
2136 
2137 void ASTStmtReader::VisitOMPParallelForSimdDirective(
2138     OMPParallelForSimdDirective *D) {
2139   VisitOMPLoopDirective(D);
2140 }
2141 
2142 void ASTStmtReader::VisitOMPParallelSectionsDirective(
2143     OMPParallelSectionsDirective *D) {
2144   VisitStmt(D);
2145   // The NumClauses field was read in ReadStmtFromStream.
2146   Record.skipInts(1);
2147   VisitOMPExecutableDirective(D);
2148   D->setHasCancel(Record.readInt());
2149 }
2150 
2151 void ASTStmtReader::VisitOMPTaskDirective(OMPTaskDirective *D) {
2152   VisitStmt(D);
2153   // The NumClauses field was read in ReadStmtFromStream.
2154   Record.skipInts(1);
2155   VisitOMPExecutableDirective(D);
2156   D->setHasCancel(Record.readInt());
2157 }
2158 
2159 void ASTStmtReader::VisitOMPTaskyieldDirective(OMPTaskyieldDirective *D) {
2160   VisitStmt(D);
2161   VisitOMPExecutableDirective(D);
2162 }
2163 
2164 void ASTStmtReader::VisitOMPBarrierDirective(OMPBarrierDirective *D) {
2165   VisitStmt(D);
2166   VisitOMPExecutableDirective(D);
2167 }
2168 
2169 void ASTStmtReader::VisitOMPTaskwaitDirective(OMPTaskwaitDirective *D) {
2170   VisitStmt(D);
2171   VisitOMPExecutableDirective(D);
2172 }
2173 
2174 void ASTStmtReader::VisitOMPTaskgroupDirective(OMPTaskgroupDirective *D) {
2175   VisitStmt(D);
2176   // The NumClauses field was read in ReadStmtFromStream.
2177   Record.skipInts(1);
2178   VisitOMPExecutableDirective(D);
2179   D->setReductionRef(Record.readSubExpr());
2180 }
2181 
2182 void ASTStmtReader::VisitOMPFlushDirective(OMPFlushDirective *D) {
2183   VisitStmt(D);
2184   // The NumClauses field was read in ReadStmtFromStream.
2185   Record.skipInts(1);
2186   VisitOMPExecutableDirective(D);
2187 }
2188 
2189 void ASTStmtReader::VisitOMPOrderedDirective(OMPOrderedDirective *D) {
2190   VisitStmt(D);
2191   // The NumClauses field was read in ReadStmtFromStream.
2192   Record.skipInts(1);
2193   VisitOMPExecutableDirective(D);
2194 }
2195 
2196 void ASTStmtReader::VisitOMPAtomicDirective(OMPAtomicDirective *D) {
2197   VisitStmt(D);
2198   // The NumClauses field was read in ReadStmtFromStream.
2199   Record.skipInts(1);
2200   VisitOMPExecutableDirective(D);
2201   D->setX(Record.readSubExpr());
2202   D->setV(Record.readSubExpr());
2203   D->setExpr(Record.readSubExpr());
2204   D->setUpdateExpr(Record.readSubExpr());
2205   D->IsXLHSInRHSPart = Record.readInt() != 0;
2206   D->IsPostfixUpdate = Record.readInt() != 0;
2207 }
2208 
2209 void ASTStmtReader::VisitOMPTargetDirective(OMPTargetDirective *D) {
2210   VisitStmt(D);
2211   // The NumClauses field was read in ReadStmtFromStream.
2212   Record.skipInts(1);
2213   VisitOMPExecutableDirective(D);
2214 }
2215 
2216 void ASTStmtReader::VisitOMPTargetDataDirective(OMPTargetDataDirective *D) {
2217   VisitStmt(D);
2218   Record.skipInts(1);
2219   VisitOMPExecutableDirective(D);
2220 }
2221 
2222 void ASTStmtReader::VisitOMPTargetEnterDataDirective(
2223     OMPTargetEnterDataDirective *D) {
2224   VisitStmt(D);
2225   Record.skipInts(1);
2226   VisitOMPExecutableDirective(D);
2227 }
2228 
2229 void ASTStmtReader::VisitOMPTargetExitDataDirective(
2230     OMPTargetExitDataDirective *D) {
2231   VisitStmt(D);
2232   Record.skipInts(1);
2233   VisitOMPExecutableDirective(D);
2234 }
2235 
2236 void ASTStmtReader::VisitOMPTargetParallelDirective(
2237     OMPTargetParallelDirective *D) {
2238   VisitStmt(D);
2239   Record.skipInts(1);
2240   VisitOMPExecutableDirective(D);
2241 }
2242 
2243 void ASTStmtReader::VisitOMPTargetParallelForDirective(
2244     OMPTargetParallelForDirective *D) {
2245   VisitOMPLoopDirective(D);
2246   D->setHasCancel(Record.readInt());
2247 }
2248 
2249 void ASTStmtReader::VisitOMPTeamsDirective(OMPTeamsDirective *D) {
2250   VisitStmt(D);
2251   // The NumClauses field was read in ReadStmtFromStream.
2252   Record.skipInts(1);
2253   VisitOMPExecutableDirective(D);
2254 }
2255 
2256 void ASTStmtReader::VisitOMPCancellationPointDirective(
2257     OMPCancellationPointDirective *D) {
2258   VisitStmt(D);
2259   VisitOMPExecutableDirective(D);
2260   D->setCancelRegion(static_cast<OpenMPDirectiveKind>(Record.readInt()));
2261 }
2262 
2263 void ASTStmtReader::VisitOMPCancelDirective(OMPCancelDirective *D) {
2264   VisitStmt(D);
2265   // The NumClauses field was read in ReadStmtFromStream.
2266   Record.skipInts(1);
2267   VisitOMPExecutableDirective(D);
2268   D->setCancelRegion(static_cast<OpenMPDirectiveKind>(Record.readInt()));
2269 }
2270 
2271 void ASTStmtReader::VisitOMPTaskLoopDirective(OMPTaskLoopDirective *D) {
2272   VisitOMPLoopDirective(D);
2273 }
2274 
2275 void ASTStmtReader::VisitOMPTaskLoopSimdDirective(OMPTaskLoopSimdDirective *D) {
2276   VisitOMPLoopDirective(D);
2277 }
2278 
2279 void ASTStmtReader::VisitOMPDistributeDirective(OMPDistributeDirective *D) {
2280   VisitOMPLoopDirective(D);
2281 }
2282 
2283 void ASTStmtReader::VisitOMPTargetUpdateDirective(OMPTargetUpdateDirective *D) {
2284   VisitStmt(D);
2285   Record.skipInts(1);
2286   VisitOMPExecutableDirective(D);
2287 }
2288 
2289 void ASTStmtReader::VisitOMPDistributeParallelForDirective(
2290     OMPDistributeParallelForDirective *D) {
2291   VisitOMPLoopDirective(D);
2292   D->setHasCancel(Record.readInt());
2293 }
2294 
2295 void ASTStmtReader::VisitOMPDistributeParallelForSimdDirective(
2296     OMPDistributeParallelForSimdDirective *D) {
2297   VisitOMPLoopDirective(D);
2298 }
2299 
2300 void ASTStmtReader::VisitOMPDistributeSimdDirective(
2301     OMPDistributeSimdDirective *D) {
2302   VisitOMPLoopDirective(D);
2303 }
2304 
2305 void ASTStmtReader::VisitOMPTargetParallelForSimdDirective(
2306     OMPTargetParallelForSimdDirective *D) {
2307   VisitOMPLoopDirective(D);
2308 }
2309 
2310 void ASTStmtReader::VisitOMPTargetSimdDirective(OMPTargetSimdDirective *D) {
2311   VisitOMPLoopDirective(D);
2312 }
2313 
2314 void ASTStmtReader::VisitOMPTeamsDistributeDirective(
2315     OMPTeamsDistributeDirective *D) {
2316   VisitOMPLoopDirective(D);
2317 }
2318 
2319 void ASTStmtReader::VisitOMPTeamsDistributeSimdDirective(
2320     OMPTeamsDistributeSimdDirective *D) {
2321   VisitOMPLoopDirective(D);
2322 }
2323 
2324 void ASTStmtReader::VisitOMPTeamsDistributeParallelForSimdDirective(
2325     OMPTeamsDistributeParallelForSimdDirective *D) {
2326   VisitOMPLoopDirective(D);
2327 }
2328 
2329 void ASTStmtReader::VisitOMPTeamsDistributeParallelForDirective(
2330     OMPTeamsDistributeParallelForDirective *D) {
2331   VisitOMPLoopDirective(D);
2332   D->setHasCancel(Record.readInt());
2333 }
2334 
2335 void ASTStmtReader::VisitOMPTargetTeamsDirective(OMPTargetTeamsDirective *D) {
2336   VisitStmt(D);
2337   // The NumClauses field was read in ReadStmtFromStream.
2338   Record.skipInts(1);
2339   VisitOMPExecutableDirective(D);
2340 }
2341 
2342 void ASTStmtReader::VisitOMPTargetTeamsDistributeDirective(
2343     OMPTargetTeamsDistributeDirective *D) {
2344   VisitOMPLoopDirective(D);
2345 }
2346 
2347 void ASTStmtReader::VisitOMPTargetTeamsDistributeParallelForDirective(
2348     OMPTargetTeamsDistributeParallelForDirective *D) {
2349   VisitOMPLoopDirective(D);
2350   D->setHasCancel(Record.readInt());
2351 }
2352 
2353 void ASTStmtReader::VisitOMPTargetTeamsDistributeParallelForSimdDirective(
2354     OMPTargetTeamsDistributeParallelForSimdDirective *D) {
2355   VisitOMPLoopDirective(D);
2356 }
2357 
2358 void ASTStmtReader::VisitOMPTargetTeamsDistributeSimdDirective(
2359     OMPTargetTeamsDistributeSimdDirective *D) {
2360   VisitOMPLoopDirective(D);
2361 }
2362 
2363 //===----------------------------------------------------------------------===//
2364 // ASTReader Implementation
2365 //===----------------------------------------------------------------------===//
2366 
2367 Stmt *ASTReader::ReadStmt(ModuleFile &F) {
2368   switch (ReadingKind) {
2369   case Read_None:
2370     llvm_unreachable("should not call this when not reading anything");
2371   case Read_Decl:
2372   case Read_Type:
2373     return ReadStmtFromStream(F);
2374   case Read_Stmt:
2375     return ReadSubStmt();
2376   }
2377 
2378   llvm_unreachable("ReadingKind not set ?");
2379 }
2380 
2381 Expr *ASTReader::ReadExpr(ModuleFile &F) {
2382   return cast_or_null<Expr>(ReadStmt(F));
2383 }
2384 
2385 Expr *ASTReader::ReadSubExpr() {
2386   return cast_or_null<Expr>(ReadSubStmt());
2387 }
2388 
2389 // Within the bitstream, expressions are stored in Reverse Polish
2390 // Notation, with each of the subexpressions preceding the
2391 // expression they are stored in. Subexpressions are stored from last to first.
2392 // To evaluate expressions, we continue reading expressions and placing them on
2393 // the stack, with expressions having operands removing those operands from the
2394 // stack. Evaluation terminates when we see a STMT_STOP record, and
2395 // the single remaining expression on the stack is our result.
2396 Stmt *ASTReader::ReadStmtFromStream(ModuleFile &F) {
2397   ReadingKindTracker ReadingKind(Read_Stmt, *this);
2398   llvm::BitstreamCursor &Cursor = F.DeclsCursor;
2399 
2400   // Map of offset to previously deserialized stmt. The offset points
2401   // just after the stmt record.
2402   llvm::DenseMap<uint64_t, Stmt *> StmtEntries;
2403 
2404 #ifndef NDEBUG
2405   unsigned PrevNumStmts = StmtStack.size();
2406 #endif
2407 
2408   ASTRecordReader Record(*this, F);
2409   ASTStmtReader Reader(Record, Cursor);
2410   Stmt::EmptyShell Empty;
2411 
2412   while (true) {
2413     llvm::Expected<llvm::BitstreamEntry> MaybeEntry =
2414         Cursor.advanceSkippingSubblocks();
2415     if (!MaybeEntry) {
2416       Error(toString(MaybeEntry.takeError()));
2417       return nullptr;
2418     }
2419     llvm::BitstreamEntry Entry = MaybeEntry.get();
2420 
2421     switch (Entry.Kind) {
2422     case llvm::BitstreamEntry::SubBlock: // Handled for us already.
2423     case llvm::BitstreamEntry::Error:
2424       Error("malformed block record in AST file");
2425       return nullptr;
2426     case llvm::BitstreamEntry::EndBlock:
2427       goto Done;
2428     case llvm::BitstreamEntry::Record:
2429       // The interesting case.
2430       break;
2431     }
2432 
2433     ASTContext &Context = getContext();
2434     Stmt *S = nullptr;
2435     bool Finished = false;
2436     bool IsStmtReference = false;
2437     Expected<unsigned> MaybeStmtCode = Record.readRecord(Cursor, Entry.ID);
2438     if (!MaybeStmtCode) {
2439       Error(toString(MaybeStmtCode.takeError()));
2440       return nullptr;
2441     }
2442     switch ((StmtCode)MaybeStmtCode.get()) {
2443     case STMT_STOP:
2444       Finished = true;
2445       break;
2446 
2447     case STMT_REF_PTR:
2448       IsStmtReference = true;
2449       assert(StmtEntries.find(Record[0]) != StmtEntries.end() &&
2450              "No stmt was recorded for this offset reference!");
2451       S = StmtEntries[Record.readInt()];
2452       break;
2453 
2454     case STMT_NULL_PTR:
2455       S = nullptr;
2456       break;
2457 
2458     case STMT_NULL:
2459       S = new (Context) NullStmt(Empty);
2460       break;
2461 
2462     case STMT_COMPOUND:
2463       S = CompoundStmt::CreateEmpty(
2464           Context, /*NumStmts=*/Record[ASTStmtReader::NumStmtFields]);
2465       break;
2466 
2467     case STMT_CASE:
2468       S = CaseStmt::CreateEmpty(
2469           Context,
2470           /*CaseStmtIsGNURange*/ Record[ASTStmtReader::NumStmtFields + 3]);
2471       break;
2472 
2473     case STMT_DEFAULT:
2474       S = new (Context) DefaultStmt(Empty);
2475       break;
2476 
2477     case STMT_LABEL:
2478       S = new (Context) LabelStmt(Empty);
2479       break;
2480 
2481     case STMT_ATTRIBUTED:
2482       S = AttributedStmt::CreateEmpty(
2483         Context,
2484         /*NumAttrs*/Record[ASTStmtReader::NumStmtFields]);
2485       break;
2486 
2487     case STMT_IF:
2488       S = IfStmt::CreateEmpty(
2489           Context,
2490           /* HasElse=*/Record[ASTStmtReader::NumStmtFields + 1],
2491           /* HasVar=*/Record[ASTStmtReader::NumStmtFields + 2],
2492           /* HasInit=*/Record[ASTStmtReader::NumStmtFields + 3]);
2493       break;
2494 
2495     case STMT_SWITCH:
2496       S = SwitchStmt::CreateEmpty(
2497           Context,
2498           /* HasInit=*/Record[ASTStmtReader::NumStmtFields],
2499           /* HasVar=*/Record[ASTStmtReader::NumStmtFields + 1]);
2500       break;
2501 
2502     case STMT_WHILE:
2503       S = WhileStmt::CreateEmpty(
2504           Context,
2505           /* HasVar=*/Record[ASTStmtReader::NumStmtFields]);
2506       break;
2507 
2508     case STMT_DO:
2509       S = new (Context) DoStmt(Empty);
2510       break;
2511 
2512     case STMT_FOR:
2513       S = new (Context) ForStmt(Empty);
2514       break;
2515 
2516     case STMT_GOTO:
2517       S = new (Context) GotoStmt(Empty);
2518       break;
2519 
2520     case STMT_INDIRECT_GOTO:
2521       S = new (Context) IndirectGotoStmt(Empty);
2522       break;
2523 
2524     case STMT_CONTINUE:
2525       S = new (Context) ContinueStmt(Empty);
2526       break;
2527 
2528     case STMT_BREAK:
2529       S = new (Context) BreakStmt(Empty);
2530       break;
2531 
2532     case STMT_RETURN:
2533       S = ReturnStmt::CreateEmpty(
2534           Context, /* HasNRVOCandidate=*/Record[ASTStmtReader::NumStmtFields]);
2535       break;
2536 
2537     case STMT_DECL:
2538       S = new (Context) DeclStmt(Empty);
2539       break;
2540 
2541     case STMT_GCCASM:
2542       S = new (Context) GCCAsmStmt(Empty);
2543       break;
2544 
2545     case STMT_MSASM:
2546       S = new (Context) MSAsmStmt(Empty);
2547       break;
2548 
2549     case STMT_CAPTURED:
2550       S = CapturedStmt::CreateDeserialized(
2551           Context, Record[ASTStmtReader::NumStmtFields]);
2552       break;
2553 
2554     case EXPR_CONSTANT:
2555       S = ConstantExpr::CreateEmpty(
2556           Context,
2557           static_cast<ConstantExpr::ResultStorageKind>(
2558               Record[ASTStmtReader::NumExprFields]),
2559           Empty);
2560       break;
2561 
2562     case EXPR_PREDEFINED:
2563       S = PredefinedExpr::CreateEmpty(
2564           Context,
2565           /*HasFunctionName*/ Record[ASTStmtReader::NumExprFields]);
2566       break;
2567 
2568     case EXPR_DECL_REF:
2569       S = DeclRefExpr::CreateEmpty(
2570         Context,
2571         /*HasQualifier=*/Record[ASTStmtReader::NumExprFields],
2572         /*HasFoundDecl=*/Record[ASTStmtReader::NumExprFields + 1],
2573         /*HasTemplateKWAndArgsInfo=*/Record[ASTStmtReader::NumExprFields + 2],
2574         /*NumTemplateArgs=*/Record[ASTStmtReader::NumExprFields + 2] ?
2575           Record[ASTStmtReader::NumExprFields + 6] : 0);
2576       break;
2577 
2578     case EXPR_INTEGER_LITERAL:
2579       S = IntegerLiteral::Create(Context, Empty);
2580       break;
2581 
2582     case EXPR_FLOATING_LITERAL:
2583       S = FloatingLiteral::Create(Context, Empty);
2584       break;
2585 
2586     case EXPR_IMAGINARY_LITERAL:
2587       S = new (Context) ImaginaryLiteral(Empty);
2588       break;
2589 
2590     case EXPR_STRING_LITERAL:
2591       S = StringLiteral::CreateEmpty(
2592           Context,
2593           /* NumConcatenated=*/Record[ASTStmtReader::NumExprFields],
2594           /* Length=*/Record[ASTStmtReader::NumExprFields + 1],
2595           /* CharByteWidth=*/Record[ASTStmtReader::NumExprFields + 2]);
2596       break;
2597 
2598     case EXPR_CHARACTER_LITERAL:
2599       S = new (Context) CharacterLiteral(Empty);
2600       break;
2601 
2602     case EXPR_PAREN:
2603       S = new (Context) ParenExpr(Empty);
2604       break;
2605 
2606     case EXPR_PAREN_LIST:
2607       S = ParenListExpr::CreateEmpty(
2608           Context,
2609           /* NumExprs=*/Record[ASTStmtReader::NumExprFields]);
2610       break;
2611 
2612     case EXPR_UNARY_OPERATOR:
2613       S = new (Context) UnaryOperator(Empty);
2614       break;
2615 
2616     case EXPR_OFFSETOF:
2617       S = OffsetOfExpr::CreateEmpty(Context,
2618                                     Record[ASTStmtReader::NumExprFields],
2619                                     Record[ASTStmtReader::NumExprFields + 1]);
2620       break;
2621 
2622     case EXPR_SIZEOF_ALIGN_OF:
2623       S = new (Context) UnaryExprOrTypeTraitExpr(Empty);
2624       break;
2625 
2626     case EXPR_ARRAY_SUBSCRIPT:
2627       S = new (Context) ArraySubscriptExpr(Empty);
2628       break;
2629 
2630     case EXPR_OMP_ARRAY_SECTION:
2631       S = new (Context) OMPArraySectionExpr(Empty);
2632       break;
2633 
2634     case EXPR_CALL:
2635       S = CallExpr::CreateEmpty(
2636           Context, /*NumArgs=*/Record[ASTStmtReader::NumExprFields], Empty);
2637       break;
2638 
2639     case EXPR_MEMBER:
2640       S = MemberExpr::CreateEmpty(Context, Record[ASTStmtReader::NumExprFields],
2641                                   Record[ASTStmtReader::NumExprFields + 1],
2642                                   Record[ASTStmtReader::NumExprFields + 2],
2643                                   Record[ASTStmtReader::NumExprFields + 3]);
2644       break;
2645 
2646     case EXPR_BINARY_OPERATOR:
2647       S = new (Context) BinaryOperator(Empty);
2648       break;
2649 
2650     case EXPR_COMPOUND_ASSIGN_OPERATOR:
2651       S = new (Context) CompoundAssignOperator(Empty);
2652       break;
2653 
2654     case EXPR_CONDITIONAL_OPERATOR:
2655       S = new (Context) ConditionalOperator(Empty);
2656       break;
2657 
2658     case EXPR_BINARY_CONDITIONAL_OPERATOR:
2659       S = new (Context) BinaryConditionalOperator(Empty);
2660       break;
2661 
2662     case EXPR_IMPLICIT_CAST:
2663       S = ImplicitCastExpr::CreateEmpty(Context,
2664                        /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
2665       break;
2666 
2667     case EXPR_CSTYLE_CAST:
2668       S = CStyleCastExpr::CreateEmpty(Context,
2669                        /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
2670       break;
2671 
2672     case EXPR_COMPOUND_LITERAL:
2673       S = new (Context) CompoundLiteralExpr(Empty);
2674       break;
2675 
2676     case EXPR_EXT_VECTOR_ELEMENT:
2677       S = new (Context) ExtVectorElementExpr(Empty);
2678       break;
2679 
2680     case EXPR_INIT_LIST:
2681       S = new (Context) InitListExpr(Empty);
2682       break;
2683 
2684     case EXPR_DESIGNATED_INIT:
2685       S = DesignatedInitExpr::CreateEmpty(Context,
2686                                      Record[ASTStmtReader::NumExprFields] - 1);
2687 
2688       break;
2689 
2690     case EXPR_DESIGNATED_INIT_UPDATE:
2691       S = new (Context) DesignatedInitUpdateExpr(Empty);
2692       break;
2693 
2694     case EXPR_IMPLICIT_VALUE_INIT:
2695       S = new (Context) ImplicitValueInitExpr(Empty);
2696       break;
2697 
2698     case EXPR_NO_INIT:
2699       S = new (Context) NoInitExpr(Empty);
2700       break;
2701 
2702     case EXPR_ARRAY_INIT_LOOP:
2703       S = new (Context) ArrayInitLoopExpr(Empty);
2704       break;
2705 
2706     case EXPR_ARRAY_INIT_INDEX:
2707       S = new (Context) ArrayInitIndexExpr(Empty);
2708       break;
2709 
2710     case EXPR_VA_ARG:
2711       S = new (Context) VAArgExpr(Empty);
2712       break;
2713 
2714     case EXPR_SOURCE_LOC:
2715       S = new (Context) SourceLocExpr(Empty);
2716       break;
2717 
2718     case EXPR_ADDR_LABEL:
2719       S = new (Context) AddrLabelExpr(Empty);
2720       break;
2721 
2722     case EXPR_STMT:
2723       S = new (Context) StmtExpr(Empty);
2724       break;
2725 
2726     case EXPR_CHOOSE:
2727       S = new (Context) ChooseExpr(Empty);
2728       break;
2729 
2730     case EXPR_GNU_NULL:
2731       S = new (Context) GNUNullExpr(Empty);
2732       break;
2733 
2734     case EXPR_SHUFFLE_VECTOR:
2735       S = new (Context) ShuffleVectorExpr(Empty);
2736       break;
2737 
2738     case EXPR_CONVERT_VECTOR:
2739       S = new (Context) ConvertVectorExpr(Empty);
2740       break;
2741 
2742     case EXPR_BLOCK:
2743       S = new (Context) BlockExpr(Empty);
2744       break;
2745 
2746     case EXPR_GENERIC_SELECTION:
2747       S = GenericSelectionExpr::CreateEmpty(
2748           Context,
2749           /*NumAssocs=*/Record[ASTStmtReader::NumExprFields]);
2750       break;
2751 
2752     case EXPR_OBJC_STRING_LITERAL:
2753       S = new (Context) ObjCStringLiteral(Empty);
2754       break;
2755 
2756     case EXPR_OBJC_BOXED_EXPRESSION:
2757       S = new (Context) ObjCBoxedExpr(Empty);
2758       break;
2759 
2760     case EXPR_OBJC_ARRAY_LITERAL:
2761       S = ObjCArrayLiteral::CreateEmpty(Context,
2762                                         Record[ASTStmtReader::NumExprFields]);
2763       break;
2764 
2765     case EXPR_OBJC_DICTIONARY_LITERAL:
2766       S = ObjCDictionaryLiteral::CreateEmpty(Context,
2767             Record[ASTStmtReader::NumExprFields],
2768             Record[ASTStmtReader::NumExprFields + 1]);
2769       break;
2770 
2771     case EXPR_OBJC_ENCODE:
2772       S = new (Context) ObjCEncodeExpr(Empty);
2773       break;
2774 
2775     case EXPR_OBJC_SELECTOR_EXPR:
2776       S = new (Context) ObjCSelectorExpr(Empty);
2777       break;
2778 
2779     case EXPR_OBJC_PROTOCOL_EXPR:
2780       S = new (Context) ObjCProtocolExpr(Empty);
2781       break;
2782 
2783     case EXPR_OBJC_IVAR_REF_EXPR:
2784       S = new (Context) ObjCIvarRefExpr(Empty);
2785       break;
2786 
2787     case EXPR_OBJC_PROPERTY_REF_EXPR:
2788       S = new (Context) ObjCPropertyRefExpr(Empty);
2789       break;
2790 
2791     case EXPR_OBJC_SUBSCRIPT_REF_EXPR:
2792       S = new (Context) ObjCSubscriptRefExpr(Empty);
2793       break;
2794 
2795     case EXPR_OBJC_KVC_REF_EXPR:
2796       llvm_unreachable("mismatching AST file");
2797 
2798     case EXPR_OBJC_MESSAGE_EXPR:
2799       S = ObjCMessageExpr::CreateEmpty(Context,
2800                                      Record[ASTStmtReader::NumExprFields],
2801                                      Record[ASTStmtReader::NumExprFields + 1]);
2802       break;
2803 
2804     case EXPR_OBJC_ISA:
2805       S = new (Context) ObjCIsaExpr(Empty);
2806       break;
2807 
2808     case EXPR_OBJC_INDIRECT_COPY_RESTORE:
2809       S = new (Context) ObjCIndirectCopyRestoreExpr(Empty);
2810       break;
2811 
2812     case EXPR_OBJC_BRIDGED_CAST:
2813       S = new (Context) ObjCBridgedCastExpr(Empty);
2814       break;
2815 
2816     case STMT_OBJC_FOR_COLLECTION:
2817       S = new (Context) ObjCForCollectionStmt(Empty);
2818       break;
2819 
2820     case STMT_OBJC_CATCH:
2821       S = new (Context) ObjCAtCatchStmt(Empty);
2822       break;
2823 
2824     case STMT_OBJC_FINALLY:
2825       S = new (Context) ObjCAtFinallyStmt(Empty);
2826       break;
2827 
2828     case STMT_OBJC_AT_TRY:
2829       S = ObjCAtTryStmt::CreateEmpty(Context,
2830                                      Record[ASTStmtReader::NumStmtFields],
2831                                      Record[ASTStmtReader::NumStmtFields + 1]);
2832       break;
2833 
2834     case STMT_OBJC_AT_SYNCHRONIZED:
2835       S = new (Context) ObjCAtSynchronizedStmt(Empty);
2836       break;
2837 
2838     case STMT_OBJC_AT_THROW:
2839       S = new (Context) ObjCAtThrowStmt(Empty);
2840       break;
2841 
2842     case STMT_OBJC_AUTORELEASE_POOL:
2843       S = new (Context) ObjCAutoreleasePoolStmt(Empty);
2844       break;
2845 
2846     case EXPR_OBJC_BOOL_LITERAL:
2847       S = new (Context) ObjCBoolLiteralExpr(Empty);
2848       break;
2849 
2850     case EXPR_OBJC_AVAILABILITY_CHECK:
2851       S = new (Context) ObjCAvailabilityCheckExpr(Empty);
2852       break;
2853 
2854     case STMT_SEH_LEAVE:
2855       S = new (Context) SEHLeaveStmt(Empty);
2856       break;
2857 
2858     case STMT_SEH_EXCEPT:
2859       S = new (Context) SEHExceptStmt(Empty);
2860       break;
2861 
2862     case STMT_SEH_FINALLY:
2863       S = new (Context) SEHFinallyStmt(Empty);
2864       break;
2865 
2866     case STMT_SEH_TRY:
2867       S = new (Context) SEHTryStmt(Empty);
2868       break;
2869 
2870     case STMT_CXX_CATCH:
2871       S = new (Context) CXXCatchStmt(Empty);
2872       break;
2873 
2874     case STMT_CXX_TRY:
2875       S = CXXTryStmt::Create(Context, Empty,
2876              /*numHandlers=*/Record[ASTStmtReader::NumStmtFields]);
2877       break;
2878 
2879     case STMT_CXX_FOR_RANGE:
2880       S = new (Context) CXXForRangeStmt(Empty);
2881       break;
2882 
2883     case STMT_MS_DEPENDENT_EXISTS:
2884       S = new (Context) MSDependentExistsStmt(SourceLocation(), true,
2885                                               NestedNameSpecifierLoc(),
2886                                               DeclarationNameInfo(),
2887                                               nullptr);
2888       break;
2889 
2890     case STMT_OMP_PARALLEL_DIRECTIVE:
2891       S =
2892         OMPParallelDirective::CreateEmpty(Context,
2893                                           Record[ASTStmtReader::NumStmtFields],
2894                                           Empty);
2895       break;
2896 
2897     case STMT_OMP_SIMD_DIRECTIVE: {
2898       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
2899       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
2900       S = OMPSimdDirective::CreateEmpty(Context, NumClauses,
2901                                         CollapsedNum, Empty);
2902       break;
2903     }
2904 
2905     case STMT_OMP_FOR_DIRECTIVE: {
2906       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
2907       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
2908       S = OMPForDirective::CreateEmpty(Context, NumClauses, CollapsedNum,
2909                                        Empty);
2910       break;
2911     }
2912 
2913     case STMT_OMP_FOR_SIMD_DIRECTIVE: {
2914       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
2915       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
2916       S = OMPForSimdDirective::CreateEmpty(Context, NumClauses, CollapsedNum,
2917                                            Empty);
2918       break;
2919     }
2920 
2921     case STMT_OMP_SECTIONS_DIRECTIVE:
2922       S = OMPSectionsDirective::CreateEmpty(
2923           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2924       break;
2925 
2926     case STMT_OMP_SECTION_DIRECTIVE:
2927       S = OMPSectionDirective::CreateEmpty(Context, Empty);
2928       break;
2929 
2930     case STMT_OMP_SINGLE_DIRECTIVE:
2931       S = OMPSingleDirective::CreateEmpty(
2932           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2933       break;
2934 
2935     case STMT_OMP_MASTER_DIRECTIVE:
2936       S = OMPMasterDirective::CreateEmpty(Context, Empty);
2937       break;
2938 
2939     case STMT_OMP_CRITICAL_DIRECTIVE:
2940       S = OMPCriticalDirective::CreateEmpty(
2941           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2942       break;
2943 
2944     case STMT_OMP_PARALLEL_FOR_DIRECTIVE: {
2945       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
2946       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
2947       S = OMPParallelForDirective::CreateEmpty(Context, NumClauses,
2948                                                CollapsedNum, Empty);
2949       break;
2950     }
2951 
2952     case STMT_OMP_PARALLEL_FOR_SIMD_DIRECTIVE: {
2953       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
2954       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
2955       S = OMPParallelForSimdDirective::CreateEmpty(Context, NumClauses,
2956                                                    CollapsedNum, Empty);
2957       break;
2958     }
2959 
2960     case STMT_OMP_PARALLEL_SECTIONS_DIRECTIVE:
2961       S = OMPParallelSectionsDirective::CreateEmpty(
2962           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2963       break;
2964 
2965     case STMT_OMP_TASK_DIRECTIVE:
2966       S = OMPTaskDirective::CreateEmpty(
2967           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2968       break;
2969 
2970     case STMT_OMP_TASKYIELD_DIRECTIVE:
2971       S = OMPTaskyieldDirective::CreateEmpty(Context, Empty);
2972       break;
2973 
2974     case STMT_OMP_BARRIER_DIRECTIVE:
2975       S = OMPBarrierDirective::CreateEmpty(Context, Empty);
2976       break;
2977 
2978     case STMT_OMP_TASKWAIT_DIRECTIVE:
2979       S = OMPTaskwaitDirective::CreateEmpty(Context, Empty);
2980       break;
2981 
2982     case STMT_OMP_TASKGROUP_DIRECTIVE:
2983       S = OMPTaskgroupDirective::CreateEmpty(
2984           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2985       break;
2986 
2987     case STMT_OMP_FLUSH_DIRECTIVE:
2988       S = OMPFlushDirective::CreateEmpty(
2989           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2990       break;
2991 
2992     case STMT_OMP_ORDERED_DIRECTIVE:
2993       S = OMPOrderedDirective::CreateEmpty(
2994           Context, Record[ASTStmtReader::NumStmtFields], Empty);
2995       break;
2996 
2997     case STMT_OMP_ATOMIC_DIRECTIVE:
2998       S = OMPAtomicDirective::CreateEmpty(
2999           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3000       break;
3001 
3002     case STMT_OMP_TARGET_DIRECTIVE:
3003       S = OMPTargetDirective::CreateEmpty(
3004           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3005       break;
3006 
3007     case STMT_OMP_TARGET_DATA_DIRECTIVE:
3008       S = OMPTargetDataDirective::CreateEmpty(
3009           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3010       break;
3011 
3012     case STMT_OMP_TARGET_ENTER_DATA_DIRECTIVE:
3013       S = OMPTargetEnterDataDirective::CreateEmpty(
3014           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3015       break;
3016 
3017     case STMT_OMP_TARGET_EXIT_DATA_DIRECTIVE:
3018       S = OMPTargetExitDataDirective::CreateEmpty(
3019           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3020       break;
3021 
3022     case STMT_OMP_TARGET_PARALLEL_DIRECTIVE:
3023       S = OMPTargetParallelDirective::CreateEmpty(
3024           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3025       break;
3026 
3027     case STMT_OMP_TARGET_PARALLEL_FOR_DIRECTIVE: {
3028       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
3029       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3030       S = OMPTargetParallelForDirective::CreateEmpty(Context, NumClauses,
3031                                                      CollapsedNum, Empty);
3032       break;
3033     }
3034 
3035     case STMT_OMP_TARGET_UPDATE_DIRECTIVE:
3036       S = OMPTargetUpdateDirective::CreateEmpty(
3037           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3038       break;
3039 
3040     case STMT_OMP_TEAMS_DIRECTIVE:
3041       S = OMPTeamsDirective::CreateEmpty(
3042           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3043       break;
3044 
3045     case STMT_OMP_CANCELLATION_POINT_DIRECTIVE:
3046       S = OMPCancellationPointDirective::CreateEmpty(Context, Empty);
3047       break;
3048 
3049     case STMT_OMP_CANCEL_DIRECTIVE:
3050       S = OMPCancelDirective::CreateEmpty(
3051           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3052       break;
3053 
3054     case STMT_OMP_TASKLOOP_DIRECTIVE: {
3055       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
3056       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3057       S = OMPTaskLoopDirective::CreateEmpty(Context, NumClauses, CollapsedNum,
3058                                             Empty);
3059       break;
3060     }
3061 
3062     case STMT_OMP_TASKLOOP_SIMD_DIRECTIVE: {
3063       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
3064       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3065       S = OMPTaskLoopSimdDirective::CreateEmpty(Context, NumClauses,
3066                                                 CollapsedNum, Empty);
3067       break;
3068     }
3069 
3070     case STMT_OMP_DISTRIBUTE_DIRECTIVE: {
3071       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
3072       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3073       S = OMPDistributeDirective::CreateEmpty(Context, NumClauses, CollapsedNum,
3074                                               Empty);
3075       break;
3076     }
3077 
3078     case STMT_OMP_DISTRIBUTE_PARALLEL_FOR_DIRECTIVE: {
3079       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
3080       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3081       S = OMPDistributeParallelForDirective::CreateEmpty(Context, NumClauses,
3082                                                          CollapsedNum, Empty);
3083       break;
3084     }
3085 
3086     case STMT_OMP_DISTRIBUTE_PARALLEL_FOR_SIMD_DIRECTIVE: {
3087       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
3088       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3089       S = OMPDistributeParallelForSimdDirective::CreateEmpty(Context, NumClauses,
3090                                                              CollapsedNum,
3091                                                              Empty);
3092       break;
3093     }
3094 
3095     case STMT_OMP_DISTRIBUTE_SIMD_DIRECTIVE: {
3096       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
3097       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3098       S = OMPDistributeSimdDirective::CreateEmpty(Context, NumClauses,
3099                                                   CollapsedNum, Empty);
3100       break;
3101     }
3102 
3103     case STMT_OMP_TARGET_PARALLEL_FOR_SIMD_DIRECTIVE: {
3104       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
3105       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3106       S = OMPTargetParallelForSimdDirective::CreateEmpty(Context, NumClauses,
3107                                                          CollapsedNum, Empty);
3108       break;
3109     }
3110 
3111     case STMT_OMP_TARGET_SIMD_DIRECTIVE: {
3112       auto NumClauses = Record[ASTStmtReader::NumStmtFields];
3113       auto CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3114       S = OMPTargetSimdDirective::CreateEmpty(Context, NumClauses, CollapsedNum,
3115                                               Empty);
3116       break;
3117     }
3118 
3119      case STMT_OMP_TEAMS_DISTRIBUTE_DIRECTIVE: {
3120       auto NumClauses = Record[ASTStmtReader::NumStmtFields];
3121       auto CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3122       S = OMPTeamsDistributeDirective::CreateEmpty(Context, NumClauses,
3123                                                    CollapsedNum, Empty);
3124       break;
3125     }
3126 
3127     case STMT_OMP_TEAMS_DISTRIBUTE_SIMD_DIRECTIVE: {
3128       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
3129       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3130       S = OMPTeamsDistributeSimdDirective::CreateEmpty(Context, NumClauses,
3131                                                        CollapsedNum, Empty);
3132       break;
3133     }
3134 
3135     case STMT_OMP_TEAMS_DISTRIBUTE_PARALLEL_FOR_SIMD_DIRECTIVE: {
3136       auto NumClauses = Record[ASTStmtReader::NumStmtFields];
3137       auto CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3138       S = OMPTeamsDistributeParallelForSimdDirective::CreateEmpty(
3139           Context, NumClauses, CollapsedNum, Empty);
3140       break;
3141     }
3142 
3143     case STMT_OMP_TEAMS_DISTRIBUTE_PARALLEL_FOR_DIRECTIVE: {
3144       auto NumClauses = Record[ASTStmtReader::NumStmtFields];
3145       auto CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3146       S = OMPTeamsDistributeParallelForDirective::CreateEmpty(
3147           Context, NumClauses, CollapsedNum, Empty);
3148       break;
3149     }
3150 
3151     case STMT_OMP_TARGET_TEAMS_DIRECTIVE:
3152       S = OMPTargetTeamsDirective::CreateEmpty(
3153           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3154       break;
3155 
3156     case STMT_OMP_TARGET_TEAMS_DISTRIBUTE_DIRECTIVE: {
3157       auto NumClauses = Record[ASTStmtReader::NumStmtFields];
3158       auto CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3159       S = OMPTargetTeamsDistributeDirective::CreateEmpty(Context, NumClauses,
3160                                                          CollapsedNum, Empty);
3161       break;
3162     }
3163 
3164     case STMT_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_FOR_DIRECTIVE: {
3165       auto NumClauses = Record[ASTStmtReader::NumStmtFields];
3166       auto CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3167       S = OMPTargetTeamsDistributeParallelForDirective::CreateEmpty(
3168           Context, NumClauses, CollapsedNum, Empty);
3169       break;
3170     }
3171 
3172     case STMT_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_FOR_SIMD_DIRECTIVE: {
3173       auto NumClauses = Record[ASTStmtReader::NumStmtFields];
3174       auto CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3175       S = OMPTargetTeamsDistributeParallelForSimdDirective::CreateEmpty(
3176           Context, NumClauses, CollapsedNum, Empty);
3177       break;
3178     }
3179 
3180     case STMT_OMP_TARGET_TEAMS_DISTRIBUTE_SIMD_DIRECTIVE: {
3181       auto NumClauses = Record[ASTStmtReader::NumStmtFields];
3182       auto CollapsedNum = Record[ASTStmtReader::NumStmtFields + 1];
3183       S = OMPTargetTeamsDistributeSimdDirective::CreateEmpty(
3184           Context, NumClauses, CollapsedNum, Empty);
3185       break;
3186     }
3187 
3188     case EXPR_CXX_OPERATOR_CALL:
3189       S = CXXOperatorCallExpr::CreateEmpty(
3190           Context, /*NumArgs=*/Record[ASTStmtReader::NumExprFields], Empty);
3191       break;
3192 
3193     case EXPR_CXX_MEMBER_CALL:
3194       S = CXXMemberCallExpr::CreateEmpty(
3195           Context, /*NumArgs=*/Record[ASTStmtReader::NumExprFields], Empty);
3196       break;
3197 
3198     case EXPR_CXX_CONSTRUCT:
3199       S = CXXConstructExpr::CreateEmpty(
3200           Context,
3201           /* NumArgs=*/Record[ASTStmtReader::NumExprFields]);
3202       break;
3203 
3204     case EXPR_CXX_INHERITED_CTOR_INIT:
3205       S = new (Context) CXXInheritedCtorInitExpr(Empty);
3206       break;
3207 
3208     case EXPR_CXX_TEMPORARY_OBJECT:
3209       S = CXXTemporaryObjectExpr::CreateEmpty(
3210           Context,
3211           /* NumArgs=*/Record[ASTStmtReader::NumExprFields]);
3212       break;
3213 
3214     case EXPR_CXX_STATIC_CAST:
3215       S = CXXStaticCastExpr::CreateEmpty(Context,
3216                        /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
3217       break;
3218 
3219     case EXPR_CXX_DYNAMIC_CAST:
3220       S = CXXDynamicCastExpr::CreateEmpty(Context,
3221                        /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
3222       break;
3223 
3224     case EXPR_CXX_REINTERPRET_CAST:
3225       S = CXXReinterpretCastExpr::CreateEmpty(Context,
3226                        /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
3227       break;
3228 
3229     case EXPR_CXX_CONST_CAST:
3230       S = CXXConstCastExpr::CreateEmpty(Context);
3231       break;
3232 
3233     case EXPR_CXX_FUNCTIONAL_CAST:
3234       S = CXXFunctionalCastExpr::CreateEmpty(Context,
3235                        /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
3236       break;
3237 
3238     case EXPR_USER_DEFINED_LITERAL:
3239       S = UserDefinedLiteral::CreateEmpty(
3240           Context, /*NumArgs=*/Record[ASTStmtReader::NumExprFields], Empty);
3241       break;
3242 
3243     case EXPR_CXX_STD_INITIALIZER_LIST:
3244       S = new (Context) CXXStdInitializerListExpr(Empty);
3245       break;
3246 
3247     case EXPR_CXX_BOOL_LITERAL:
3248       S = new (Context) CXXBoolLiteralExpr(Empty);
3249       break;
3250 
3251     case EXPR_CXX_NULL_PTR_LITERAL:
3252       S = new (Context) CXXNullPtrLiteralExpr(Empty);
3253       break;
3254 
3255     case EXPR_CXX_TYPEID_EXPR:
3256       S = new (Context) CXXTypeidExpr(Empty, true);
3257       break;
3258 
3259     case EXPR_CXX_TYPEID_TYPE:
3260       S = new (Context) CXXTypeidExpr(Empty, false);
3261       break;
3262 
3263     case EXPR_CXX_UUIDOF_EXPR:
3264       S = new (Context) CXXUuidofExpr(Empty, true);
3265       break;
3266 
3267     case EXPR_CXX_PROPERTY_REF_EXPR:
3268       S = new (Context) MSPropertyRefExpr(Empty);
3269       break;
3270 
3271     case EXPR_CXX_PROPERTY_SUBSCRIPT_EXPR:
3272       S = new (Context) MSPropertySubscriptExpr(Empty);
3273       break;
3274 
3275     case EXPR_CXX_UUIDOF_TYPE:
3276       S = new (Context) CXXUuidofExpr(Empty, false);
3277       break;
3278 
3279     case EXPR_CXX_THIS:
3280       S = new (Context) CXXThisExpr(Empty);
3281       break;
3282 
3283     case EXPR_CXX_THROW:
3284       S = new (Context) CXXThrowExpr(Empty);
3285       break;
3286 
3287     case EXPR_CXX_DEFAULT_ARG:
3288       S = new (Context) CXXDefaultArgExpr(Empty);
3289       break;
3290 
3291     case EXPR_CXX_DEFAULT_INIT:
3292       S = new (Context) CXXDefaultInitExpr(Empty);
3293       break;
3294 
3295     case EXPR_CXX_BIND_TEMPORARY:
3296       S = new (Context) CXXBindTemporaryExpr(Empty);
3297       break;
3298 
3299     case EXPR_CXX_SCALAR_VALUE_INIT:
3300       S = new (Context) CXXScalarValueInitExpr(Empty);
3301       break;
3302 
3303     case EXPR_CXX_NEW:
3304       S = CXXNewExpr::CreateEmpty(
3305           Context,
3306           /*IsArray=*/Record[ASTStmtReader::NumExprFields],
3307           /*HasInit=*/Record[ASTStmtReader::NumExprFields + 1],
3308           /*NumPlacementArgs=*/Record[ASTStmtReader::NumExprFields + 2],
3309           /*IsParenTypeId=*/Record[ASTStmtReader::NumExprFields + 3]);
3310       break;
3311 
3312     case EXPR_CXX_DELETE:
3313       S = new (Context) CXXDeleteExpr(Empty);
3314       break;
3315 
3316     case EXPR_CXX_PSEUDO_DESTRUCTOR:
3317       S = new (Context) CXXPseudoDestructorExpr(Empty);
3318       break;
3319 
3320     case EXPR_EXPR_WITH_CLEANUPS:
3321       S = ExprWithCleanups::Create(Context, Empty,
3322                                    Record[ASTStmtReader::NumExprFields]);
3323       break;
3324 
3325     case EXPR_CXX_DEPENDENT_SCOPE_MEMBER:
3326       S = CXXDependentScopeMemberExpr::CreateEmpty(
3327           Context,
3328           /*HasTemplateKWAndArgsInfo=*/Record[ASTStmtReader::NumExprFields],
3329           /*NumTemplateArgs=*/Record[ASTStmtReader::NumExprFields + 1],
3330           /*HasFirstQualifierFoundInScope=*/
3331           Record[ASTStmtReader::NumExprFields + 2]);
3332       break;
3333 
3334     case EXPR_CXX_DEPENDENT_SCOPE_DECL_REF:
3335       S = DependentScopeDeclRefExpr::CreateEmpty(Context,
3336          /*HasTemplateKWAndArgsInfo=*/Record[ASTStmtReader::NumExprFields],
3337                   /*NumTemplateArgs=*/Record[ASTStmtReader::NumExprFields]
3338                                    ? Record[ASTStmtReader::NumExprFields + 1]
3339                                    : 0);
3340       break;
3341 
3342     case EXPR_CXX_UNRESOLVED_CONSTRUCT:
3343       S = CXXUnresolvedConstructExpr::CreateEmpty(Context,
3344                               /*NumArgs=*/Record[ASTStmtReader::NumExprFields]);
3345       break;
3346 
3347     case EXPR_CXX_UNRESOLVED_MEMBER:
3348       S = UnresolvedMemberExpr::CreateEmpty(
3349           Context,
3350           /*NumResults=*/Record[ASTStmtReader::NumExprFields],
3351           /*HasTemplateKWAndArgsInfo=*/Record[ASTStmtReader::NumExprFields + 1],
3352           /*NumTemplateArgs=*/
3353           Record[ASTStmtReader::NumExprFields + 1]
3354               ? Record[ASTStmtReader::NumExprFields + 2]
3355               : 0);
3356       break;
3357 
3358     case EXPR_CXX_UNRESOLVED_LOOKUP:
3359       S = UnresolvedLookupExpr::CreateEmpty(
3360           Context,
3361           /*NumResults=*/Record[ASTStmtReader::NumExprFields],
3362           /*HasTemplateKWAndArgsInfo=*/Record[ASTStmtReader::NumExprFields + 1],
3363           /*NumTemplateArgs=*/
3364           Record[ASTStmtReader::NumExprFields + 1]
3365               ? Record[ASTStmtReader::NumExprFields + 2]
3366               : 0);
3367       break;
3368 
3369     case EXPR_TYPE_TRAIT:
3370       S = TypeTraitExpr::CreateDeserialized(Context,
3371             Record[ASTStmtReader::NumExprFields]);
3372       break;
3373 
3374     case EXPR_ARRAY_TYPE_TRAIT:
3375       S = new (Context) ArrayTypeTraitExpr(Empty);
3376       break;
3377 
3378     case EXPR_CXX_EXPRESSION_TRAIT:
3379       S = new (Context) ExpressionTraitExpr(Empty);
3380       break;
3381 
3382     case EXPR_CXX_NOEXCEPT:
3383       S = new (Context) CXXNoexceptExpr(Empty);
3384       break;
3385 
3386     case EXPR_PACK_EXPANSION:
3387       S = new (Context) PackExpansionExpr(Empty);
3388       break;
3389 
3390     case EXPR_SIZEOF_PACK:
3391       S = SizeOfPackExpr::CreateDeserialized(
3392               Context,
3393               /*NumPartialArgs=*/Record[ASTStmtReader::NumExprFields]);
3394       break;
3395 
3396     case EXPR_SUBST_NON_TYPE_TEMPLATE_PARM:
3397       S = new (Context) SubstNonTypeTemplateParmExpr(Empty);
3398       break;
3399 
3400     case EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK:
3401       S = new (Context) SubstNonTypeTemplateParmPackExpr(Empty);
3402       break;
3403 
3404     case EXPR_FUNCTION_PARM_PACK:
3405       S = FunctionParmPackExpr::CreateEmpty(Context,
3406                                           Record[ASTStmtReader::NumExprFields]);
3407       break;
3408 
3409     case EXPR_MATERIALIZE_TEMPORARY:
3410       S = new (Context) MaterializeTemporaryExpr(Empty);
3411       break;
3412 
3413     case EXPR_CXX_FOLD:
3414       S = new (Context) CXXFoldExpr(Empty);
3415       break;
3416 
3417     case EXPR_OPAQUE_VALUE:
3418       S = new (Context) OpaqueValueExpr(Empty);
3419       break;
3420 
3421     case EXPR_CUDA_KERNEL_CALL:
3422       S = CUDAKernelCallExpr::CreateEmpty(
3423           Context, /*NumArgs=*/Record[ASTStmtReader::NumExprFields], Empty);
3424       break;
3425 
3426     case EXPR_ASTYPE:
3427       S = new (Context) AsTypeExpr(Empty);
3428       break;
3429 
3430     case EXPR_PSEUDO_OBJECT: {
3431       unsigned numSemanticExprs = Record[ASTStmtReader::NumExprFields];
3432       S = PseudoObjectExpr::Create(Context, Empty, numSemanticExprs);
3433       break;
3434     }
3435 
3436     case EXPR_ATOMIC:
3437       S = new (Context) AtomicExpr(Empty);
3438       break;
3439 
3440     case EXPR_LAMBDA: {
3441       unsigned NumCaptures = Record[ASTStmtReader::NumExprFields];
3442       S = LambdaExpr::CreateDeserialized(Context, NumCaptures);
3443       break;
3444     }
3445 
3446     case STMT_COROUTINE_BODY: {
3447       unsigned NumParams = Record[ASTStmtReader::NumStmtFields];
3448       S = CoroutineBodyStmt::Create(Context, Empty, NumParams);
3449       break;
3450     }
3451 
3452     case STMT_CORETURN:
3453       S = new (Context) CoreturnStmt(Empty);
3454       break;
3455 
3456     case EXPR_COAWAIT:
3457       S = new (Context) CoawaitExpr(Empty);
3458       break;
3459 
3460     case EXPR_COYIELD:
3461       S = new (Context) CoyieldExpr(Empty);
3462       break;
3463 
3464     case EXPR_DEPENDENT_COAWAIT:
3465       S = new (Context) DependentCoawaitExpr(Empty);
3466       break;
3467     }
3468 
3469     // We hit a STMT_STOP, so we're done with this expression.
3470     if (Finished)
3471       break;
3472 
3473     ++NumStatementsRead;
3474 
3475     if (S && !IsStmtReference) {
3476       Reader.Visit(S);
3477       StmtEntries[Cursor.GetCurrentBitNo()] = S;
3478     }
3479 
3480     assert(Record.getIdx() == Record.size() &&
3481            "Invalid deserialization of statement");
3482     StmtStack.push_back(S);
3483   }
3484 Done:
3485   assert(StmtStack.size() > PrevNumStmts && "Read too many sub-stmts!");
3486   assert(StmtStack.size() == PrevNumStmts + 1 && "Extra expressions on stack!");
3487   return StmtStack.pop_back_val();
3488 }
3489