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/AST/ASTConcept.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/DependenceFlags.h"
25 #include "clang/AST/Expr.h"
26 #include "clang/AST/ExprCXX.h"
27 #include "clang/AST/ExprObjC.h"
28 #include "clang/AST/ExprOpenMP.h"
29 #include "clang/AST/NestedNameSpecifier.h"
30 #include "clang/AST/OpenMPClause.h"
31 #include "clang/AST/OperationKinds.h"
32 #include "clang/AST/Stmt.h"
33 #include "clang/AST/StmtCXX.h"
34 #include "clang/AST/StmtObjC.h"
35 #include "clang/AST/StmtOpenMP.h"
36 #include "clang/AST/StmtVisitor.h"
37 #include "clang/AST/TemplateBase.h"
38 #include "clang/AST/Type.h"
39 #include "clang/AST/UnresolvedSet.h"
40 #include "clang/Basic/CapturedStmt.h"
41 #include "clang/Basic/ExpressionTraits.h"
42 #include "clang/Basic/LLVM.h"
43 #include "clang/Basic/Lambda.h"
44 #include "clang/Basic/LangOptions.h"
45 #include "clang/Basic/OpenMPKinds.h"
46 #include "clang/Basic/OperatorKinds.h"
47 #include "clang/Basic/SourceLocation.h"
48 #include "clang/Basic/Specifiers.h"
49 #include "clang/Basic/TypeTraits.h"
50 #include "clang/Lex/Token.h"
51 #include "clang/Serialization/ASTBitCodes.h"
52 #include "clang/Serialization/ASTRecordReader.h"
53 #include "llvm/ADT/BitmaskEnum.h"
54 #include "llvm/ADT/DenseMap.h"
55 #include "llvm/ADT/SmallString.h"
56 #include "llvm/ADT/SmallVector.h"
57 #include "llvm/ADT/StringRef.h"
58 #include "llvm/Bitstream/BitstreamReader.h"
59 #include "llvm/Support/Casting.h"
60 #include "llvm/Support/ErrorHandling.h"
61 #include <algorithm>
62 #include <cassert>
63 #include <cstdint>
64 #include <string>
65 
66 using namespace clang;
67 using namespace serialization;
68 
69 namespace clang {
70 
71   class ASTStmtReader : public StmtVisitor<ASTStmtReader> {
72     ASTRecordReader &Record;
73     llvm::BitstreamCursor &DeclsCursor;
74 
75     SourceLocation readSourceLocation() {
76       return Record.readSourceLocation();
77     }
78 
79     SourceRange readSourceRange() {
80       return Record.readSourceRange();
81     }
82 
83     std::string readString() {
84       return Record.readString();
85     }
86 
87     TypeSourceInfo *readTypeSourceInfo() {
88       return Record.readTypeSourceInfo();
89     }
90 
91     Decl *readDecl() {
92       return Record.readDecl();
93     }
94 
95     template<typename T>
96     T *readDeclAs() {
97       return Record.readDeclAs<T>();
98     }
99 
100   public:
101     ASTStmtReader(ASTRecordReader &Record, llvm::BitstreamCursor &Cursor)
102         : Record(Record), DeclsCursor(Cursor) {}
103 
104     /// The number of record fields required for the Stmt class
105     /// itself.
106     static const unsigned NumStmtFields = 0;
107 
108     /// The number of record fields required for the Expr class
109     /// itself.
110     static const unsigned NumExprFields =
111         NumStmtFields + llvm::BitWidth<ExprDependence> + 3;
112 
113     /// Read and initialize a ExplicitTemplateArgumentList structure.
114     void ReadTemplateKWAndArgsInfo(ASTTemplateKWAndArgsInfo &Args,
115                                    TemplateArgumentLoc *ArgsLocArray,
116                                    unsigned NumTemplateArgs);
117 
118     /// Read and initialize a ExplicitTemplateArgumentList structure.
119     void ReadExplicitTemplateArgumentList(ASTTemplateArgumentListInfo &ArgList,
120                                           unsigned NumTemplateArgs);
121 
122     void VisitStmt(Stmt *S);
123 #define STMT(Type, Base) \
124     void Visit##Type(Type *);
125 #include "clang/AST/StmtNodes.inc"
126   };
127 
128 } // namespace clang
129 
130 void ASTStmtReader::ReadTemplateKWAndArgsInfo(ASTTemplateKWAndArgsInfo &Args,
131                                               TemplateArgumentLoc *ArgsLocArray,
132                                               unsigned NumTemplateArgs) {
133   SourceLocation TemplateKWLoc = readSourceLocation();
134   TemplateArgumentListInfo ArgInfo;
135   ArgInfo.setLAngleLoc(readSourceLocation());
136   ArgInfo.setRAngleLoc(readSourceLocation());
137   for (unsigned i = 0; i != NumTemplateArgs; ++i)
138     ArgInfo.addArgument(Record.readTemplateArgumentLoc());
139   Args.initializeFrom(TemplateKWLoc, ArgInfo, ArgsLocArray);
140 }
141 
142 void ASTStmtReader::VisitStmt(Stmt *S) {
143   assert(Record.getIdx() == NumStmtFields && "Incorrect statement field count");
144 }
145 
146 void ASTStmtReader::VisitNullStmt(NullStmt *S) {
147   VisitStmt(S);
148   S->setSemiLoc(readSourceLocation());
149   S->NullStmtBits.HasLeadingEmptyMacro = Record.readInt();
150 }
151 
152 void ASTStmtReader::VisitCompoundStmt(CompoundStmt *S) {
153   VisitStmt(S);
154   SmallVector<Stmt *, 16> Stmts;
155   unsigned NumStmts = Record.readInt();
156   while (NumStmts--)
157     Stmts.push_back(Record.readSubStmt());
158   S->setStmts(Stmts);
159   S->CompoundStmtBits.LBraceLoc = readSourceLocation();
160   S->RBraceLoc = readSourceLocation();
161 }
162 
163 void ASTStmtReader::VisitSwitchCase(SwitchCase *S) {
164   VisitStmt(S);
165   Record.recordSwitchCaseID(S, Record.readInt());
166   S->setKeywordLoc(readSourceLocation());
167   S->setColonLoc(readSourceLocation());
168 }
169 
170 void ASTStmtReader::VisitCaseStmt(CaseStmt *S) {
171   VisitSwitchCase(S);
172   bool CaseStmtIsGNURange = Record.readInt();
173   S->setLHS(Record.readSubExpr());
174   S->setSubStmt(Record.readSubStmt());
175   if (CaseStmtIsGNURange) {
176     S->setRHS(Record.readSubExpr());
177     S->setEllipsisLoc(readSourceLocation());
178   }
179 }
180 
181 void ASTStmtReader::VisitDefaultStmt(DefaultStmt *S) {
182   VisitSwitchCase(S);
183   S->setSubStmt(Record.readSubStmt());
184 }
185 
186 void ASTStmtReader::VisitLabelStmt(LabelStmt *S) {
187   VisitStmt(S);
188   auto *LD = readDeclAs<LabelDecl>();
189   LD->setStmt(S);
190   S->setDecl(LD);
191   S->setSubStmt(Record.readSubStmt());
192   S->setIdentLoc(readSourceLocation());
193 }
194 
195 void ASTStmtReader::VisitAttributedStmt(AttributedStmt *S) {
196   VisitStmt(S);
197   // NumAttrs in AttributedStmt is set when creating an empty
198   // AttributedStmt in AttributedStmt::CreateEmpty, since it is needed
199   // to allocate the right amount of space for the trailing Attr *.
200   uint64_t NumAttrs = Record.readInt();
201   AttrVec Attrs;
202   Record.readAttributes(Attrs);
203   (void)NumAttrs;
204   assert(NumAttrs == S->AttributedStmtBits.NumAttrs);
205   assert(NumAttrs == Attrs.size());
206   std::copy(Attrs.begin(), Attrs.end(), S->getAttrArrayPtr());
207   S->SubStmt = Record.readSubStmt();
208   S->AttributedStmtBits.AttrLoc = readSourceLocation();
209 }
210 
211 void ASTStmtReader::VisitIfStmt(IfStmt *S) {
212   VisitStmt(S);
213 
214   S->setConstexpr(Record.readInt());
215   bool HasElse = Record.readInt();
216   bool HasVar = Record.readInt();
217   bool HasInit = Record.readInt();
218 
219   S->setCond(Record.readSubExpr());
220   S->setThen(Record.readSubStmt());
221   if (HasElse)
222     S->setElse(Record.readSubStmt());
223   if (HasVar)
224     S->setConditionVariable(Record.getContext(), readDeclAs<VarDecl>());
225   if (HasInit)
226     S->setInit(Record.readSubStmt());
227 
228   S->setIfLoc(readSourceLocation());
229   S->setLParenLoc(readSourceLocation());
230   S->setRParenLoc(readSourceLocation());
231   if (HasElse)
232     S->setElseLoc(readSourceLocation());
233 }
234 
235 void ASTStmtReader::VisitSwitchStmt(SwitchStmt *S) {
236   VisitStmt(S);
237 
238   bool HasInit = Record.readInt();
239   bool HasVar = Record.readInt();
240   bool AllEnumCasesCovered = Record.readInt();
241   if (AllEnumCasesCovered)
242     S->setAllEnumCasesCovered();
243 
244   S->setCond(Record.readSubExpr());
245   S->setBody(Record.readSubStmt());
246   if (HasInit)
247     S->setInit(Record.readSubStmt());
248   if (HasVar)
249     S->setConditionVariable(Record.getContext(), readDeclAs<VarDecl>());
250 
251   S->setSwitchLoc(readSourceLocation());
252   S->setLParenLoc(readSourceLocation());
253   S->setRParenLoc(readSourceLocation());
254 
255   SwitchCase *PrevSC = nullptr;
256   for (auto E = Record.size(); Record.getIdx() != E; ) {
257     SwitchCase *SC = Record.getSwitchCaseWithID(Record.readInt());
258     if (PrevSC)
259       PrevSC->setNextSwitchCase(SC);
260     else
261       S->setSwitchCaseList(SC);
262 
263     PrevSC = SC;
264   }
265 }
266 
267 void ASTStmtReader::VisitWhileStmt(WhileStmt *S) {
268   VisitStmt(S);
269 
270   bool HasVar = Record.readInt();
271 
272   S->setCond(Record.readSubExpr());
273   S->setBody(Record.readSubStmt());
274   if (HasVar)
275     S->setConditionVariable(Record.getContext(), readDeclAs<VarDecl>());
276 
277   S->setWhileLoc(readSourceLocation());
278   S->setLParenLoc(readSourceLocation());
279   S->setRParenLoc(readSourceLocation());
280 }
281 
282 void ASTStmtReader::VisitDoStmt(DoStmt *S) {
283   VisitStmt(S);
284   S->setCond(Record.readSubExpr());
285   S->setBody(Record.readSubStmt());
286   S->setDoLoc(readSourceLocation());
287   S->setWhileLoc(readSourceLocation());
288   S->setRParenLoc(readSourceLocation());
289 }
290 
291 void ASTStmtReader::VisitForStmt(ForStmt *S) {
292   VisitStmt(S);
293   S->setInit(Record.readSubStmt());
294   S->setCond(Record.readSubExpr());
295   S->setConditionVariable(Record.getContext(), readDeclAs<VarDecl>());
296   S->setInc(Record.readSubExpr());
297   S->setBody(Record.readSubStmt());
298   S->setForLoc(readSourceLocation());
299   S->setLParenLoc(readSourceLocation());
300   S->setRParenLoc(readSourceLocation());
301 }
302 
303 void ASTStmtReader::VisitGotoStmt(GotoStmt *S) {
304   VisitStmt(S);
305   S->setLabel(readDeclAs<LabelDecl>());
306   S->setGotoLoc(readSourceLocation());
307   S->setLabelLoc(readSourceLocation());
308 }
309 
310 void ASTStmtReader::VisitIndirectGotoStmt(IndirectGotoStmt *S) {
311   VisitStmt(S);
312   S->setGotoLoc(readSourceLocation());
313   S->setStarLoc(readSourceLocation());
314   S->setTarget(Record.readSubExpr());
315 }
316 
317 void ASTStmtReader::VisitContinueStmt(ContinueStmt *S) {
318   VisitStmt(S);
319   S->setContinueLoc(readSourceLocation());
320 }
321 
322 void ASTStmtReader::VisitBreakStmt(BreakStmt *S) {
323   VisitStmt(S);
324   S->setBreakLoc(readSourceLocation());
325 }
326 
327 void ASTStmtReader::VisitReturnStmt(ReturnStmt *S) {
328   VisitStmt(S);
329 
330   bool HasNRVOCandidate = Record.readInt();
331 
332   S->setRetValue(Record.readSubExpr());
333   if (HasNRVOCandidate)
334     S->setNRVOCandidate(readDeclAs<VarDecl>());
335 
336   S->setReturnLoc(readSourceLocation());
337 }
338 
339 void ASTStmtReader::VisitDeclStmt(DeclStmt *S) {
340   VisitStmt(S);
341   S->setStartLoc(readSourceLocation());
342   S->setEndLoc(readSourceLocation());
343 
344   if (Record.size() - Record.getIdx() == 1) {
345     // Single declaration
346     S->setDeclGroup(DeclGroupRef(readDecl()));
347   } else {
348     SmallVector<Decl *, 16> Decls;
349     int N = Record.size() - Record.getIdx();
350     Decls.reserve(N);
351     for (int I = 0; I < N; ++I)
352       Decls.push_back(readDecl());
353     S->setDeclGroup(DeclGroupRef(DeclGroup::Create(Record.getContext(),
354                                                    Decls.data(),
355                                                    Decls.size())));
356   }
357 }
358 
359 void ASTStmtReader::VisitAsmStmt(AsmStmt *S) {
360   VisitStmt(S);
361   S->NumOutputs = Record.readInt();
362   S->NumInputs = Record.readInt();
363   S->NumClobbers = Record.readInt();
364   S->setAsmLoc(readSourceLocation());
365   S->setVolatile(Record.readInt());
366   S->setSimple(Record.readInt());
367 }
368 
369 void ASTStmtReader::VisitGCCAsmStmt(GCCAsmStmt *S) {
370   VisitAsmStmt(S);
371   S->NumLabels = Record.readInt();
372   S->setRParenLoc(readSourceLocation());
373   S->setAsmString(cast_or_null<StringLiteral>(Record.readSubStmt()));
374 
375   unsigned NumOutputs = S->getNumOutputs();
376   unsigned NumInputs = S->getNumInputs();
377   unsigned NumClobbers = S->getNumClobbers();
378   unsigned NumLabels = S->getNumLabels();
379 
380   // Outputs and inputs
381   SmallVector<IdentifierInfo *, 16> Names;
382   SmallVector<StringLiteral*, 16> Constraints;
383   SmallVector<Stmt*, 16> Exprs;
384   for (unsigned I = 0, N = NumOutputs + NumInputs; I != N; ++I) {
385     Names.push_back(Record.readIdentifier());
386     Constraints.push_back(cast_or_null<StringLiteral>(Record.readSubStmt()));
387     Exprs.push_back(Record.readSubStmt());
388   }
389 
390   // Constraints
391   SmallVector<StringLiteral*, 16> Clobbers;
392   for (unsigned I = 0; I != NumClobbers; ++I)
393     Clobbers.push_back(cast_or_null<StringLiteral>(Record.readSubStmt()));
394 
395   // Labels
396   for (unsigned I = 0, N = NumLabels; I != N; ++I)
397     Exprs.push_back(Record.readSubStmt());
398 
399   S->setOutputsAndInputsAndClobbers(Record.getContext(),
400                                     Names.data(), Constraints.data(),
401                                     Exprs.data(), NumOutputs, NumInputs,
402                                     NumLabels,
403                                     Clobbers.data(), NumClobbers);
404 }
405 
406 void ASTStmtReader::VisitMSAsmStmt(MSAsmStmt *S) {
407   VisitAsmStmt(S);
408   S->LBraceLoc = readSourceLocation();
409   S->EndLoc = readSourceLocation();
410   S->NumAsmToks = Record.readInt();
411   std::string AsmStr = readString();
412 
413   // Read the tokens.
414   SmallVector<Token, 16> AsmToks;
415   AsmToks.reserve(S->NumAsmToks);
416   for (unsigned i = 0, e = S->NumAsmToks; i != e; ++i) {
417     AsmToks.push_back(Record.readToken());
418   }
419 
420   // The calls to reserve() for the FooData vectors are mandatory to
421   // prevent dead StringRefs in the Foo vectors.
422 
423   // Read the clobbers.
424   SmallVector<std::string, 16> ClobbersData;
425   SmallVector<StringRef, 16> Clobbers;
426   ClobbersData.reserve(S->NumClobbers);
427   Clobbers.reserve(S->NumClobbers);
428   for (unsigned i = 0, e = S->NumClobbers; i != e; ++i) {
429     ClobbersData.push_back(readString());
430     Clobbers.push_back(ClobbersData.back());
431   }
432 
433   // Read the operands.
434   unsigned NumOperands = S->NumOutputs + S->NumInputs;
435   SmallVector<Expr*, 16> Exprs;
436   SmallVector<std::string, 16> ConstraintsData;
437   SmallVector<StringRef, 16> Constraints;
438   Exprs.reserve(NumOperands);
439   ConstraintsData.reserve(NumOperands);
440   Constraints.reserve(NumOperands);
441   for (unsigned i = 0; i != NumOperands; ++i) {
442     Exprs.push_back(cast<Expr>(Record.readSubStmt()));
443     ConstraintsData.push_back(readString());
444     Constraints.push_back(ConstraintsData.back());
445   }
446 
447   S->initialize(Record.getContext(), AsmStr, AsmToks,
448                 Constraints, Exprs, Clobbers);
449 }
450 
451 void ASTStmtReader::VisitCoroutineBodyStmt(CoroutineBodyStmt *S) {
452   VisitStmt(S);
453   assert(Record.peekInt() == S->NumParams);
454   Record.skipInts(1);
455   auto *StoredStmts = S->getStoredStmts();
456   for (unsigned i = 0;
457        i < CoroutineBodyStmt::SubStmt::FirstParamMove + S->NumParams; ++i)
458     StoredStmts[i] = Record.readSubStmt();
459 }
460 
461 void ASTStmtReader::VisitCoreturnStmt(CoreturnStmt *S) {
462   VisitStmt(S);
463   S->CoreturnLoc = Record.readSourceLocation();
464   for (auto &SubStmt: S->SubStmts)
465     SubStmt = Record.readSubStmt();
466   S->IsImplicit = Record.readInt() != 0;
467 }
468 
469 void ASTStmtReader::VisitCoawaitExpr(CoawaitExpr *E) {
470   VisitExpr(E);
471   E->KeywordLoc = readSourceLocation();
472   for (auto &SubExpr: E->SubExprs)
473     SubExpr = Record.readSubStmt();
474   E->OpaqueValue = cast_or_null<OpaqueValueExpr>(Record.readSubStmt());
475   E->setIsImplicit(Record.readInt() != 0);
476 }
477 
478 void ASTStmtReader::VisitCoyieldExpr(CoyieldExpr *E) {
479   VisitExpr(E);
480   E->KeywordLoc = readSourceLocation();
481   for (auto &SubExpr: E->SubExprs)
482     SubExpr = Record.readSubStmt();
483   E->OpaqueValue = cast_or_null<OpaqueValueExpr>(Record.readSubStmt());
484 }
485 
486 void ASTStmtReader::VisitDependentCoawaitExpr(DependentCoawaitExpr *E) {
487   VisitExpr(E);
488   E->KeywordLoc = readSourceLocation();
489   for (auto &SubExpr: E->SubExprs)
490     SubExpr = Record.readSubStmt();
491 }
492 
493 void ASTStmtReader::VisitCapturedStmt(CapturedStmt *S) {
494   VisitStmt(S);
495   Record.skipInts(1);
496   S->setCapturedDecl(readDeclAs<CapturedDecl>());
497   S->setCapturedRegionKind(static_cast<CapturedRegionKind>(Record.readInt()));
498   S->setCapturedRecordDecl(readDeclAs<RecordDecl>());
499 
500   // Capture inits
501   for (CapturedStmt::capture_init_iterator I = S->capture_init_begin(),
502                                            E = S->capture_init_end();
503        I != E; ++I)
504     *I = Record.readSubExpr();
505 
506   // Body
507   S->setCapturedStmt(Record.readSubStmt());
508   S->getCapturedDecl()->setBody(S->getCapturedStmt());
509 
510   // Captures
511   for (auto &I : S->captures()) {
512     I.VarAndKind.setPointer(readDeclAs<VarDecl>());
513     I.VarAndKind.setInt(
514         static_cast<CapturedStmt::VariableCaptureKind>(Record.readInt()));
515     I.Loc = readSourceLocation();
516   }
517 }
518 
519 void ASTStmtReader::VisitExpr(Expr *E) {
520   VisitStmt(E);
521   E->setType(Record.readType());
522 
523   // FIXME: write and read all DependentFlags with a single call.
524   bool TypeDependent = Record.readInt();
525   bool ValueDependent = Record.readInt();
526   bool InstantiationDependent = Record.readInt();
527   bool ContainsUnexpandedTemplateParameters = Record.readInt();
528   bool ContainsErrors = Record.readInt();
529   auto Deps = ExprDependence::None;
530   if (TypeDependent)
531     Deps |= ExprDependence::Type;
532   if (ValueDependent)
533     Deps |= ExprDependence::Value;
534   if (InstantiationDependent)
535     Deps |= ExprDependence::Instantiation;
536   if (ContainsUnexpandedTemplateParameters)
537     Deps |= ExprDependence::UnexpandedPack;
538   if (ContainsErrors)
539     Deps |= ExprDependence::Error;
540   E->setDependence(Deps);
541 
542   E->setValueKind(static_cast<ExprValueKind>(Record.readInt()));
543   E->setObjectKind(static_cast<ExprObjectKind>(Record.readInt()));
544   assert(Record.getIdx() == NumExprFields &&
545          "Incorrect expression field count");
546 }
547 
548 void ASTStmtReader::VisitConstantExpr(ConstantExpr *E) {
549   VisitExpr(E);
550 
551   auto StorageKind = Record.readInt();
552   assert(E->ConstantExprBits.ResultKind == StorageKind && "Wrong ResultKind!");
553 
554   E->ConstantExprBits.APValueKind = Record.readInt();
555   E->ConstantExprBits.IsUnsigned = Record.readInt();
556   E->ConstantExprBits.BitWidth = Record.readInt();
557   E->ConstantExprBits.HasCleanup = false; // Not serialized, see below.
558   E->ConstantExprBits.IsImmediateInvocation = Record.readInt();
559 
560   switch (StorageKind) {
561   case ConstantExpr::RSK_None:
562     break;
563 
564   case ConstantExpr::RSK_Int64:
565     E->Int64Result() = Record.readInt();
566     break;
567 
568   case ConstantExpr::RSK_APValue:
569     E->APValueResult() = Record.readAPValue();
570     if (E->APValueResult().needsCleanup()) {
571       E->ConstantExprBits.HasCleanup = true;
572       Record.getContext().addDestruction(&E->APValueResult());
573     }
574     break;
575   default:
576     llvm_unreachable("unexpected ResultKind!");
577   }
578 
579   E->setSubExpr(Record.readSubExpr());
580 }
581 
582 void ASTStmtReader::VisitPredefinedExpr(PredefinedExpr *E) {
583   VisitExpr(E);
584   bool HasFunctionName = Record.readInt();
585   E->PredefinedExprBits.HasFunctionName = HasFunctionName;
586   E->PredefinedExprBits.Kind = Record.readInt();
587   E->setLocation(readSourceLocation());
588   if (HasFunctionName)
589     E->setFunctionName(cast<StringLiteral>(Record.readSubExpr()));
590 }
591 
592 void ASTStmtReader::VisitDeclRefExpr(DeclRefExpr *E) {
593   VisitExpr(E);
594 
595   E->DeclRefExprBits.HasQualifier = Record.readInt();
596   E->DeclRefExprBits.HasFoundDecl = Record.readInt();
597   E->DeclRefExprBits.HasTemplateKWAndArgsInfo = Record.readInt();
598   E->DeclRefExprBits.HadMultipleCandidates = Record.readInt();
599   E->DeclRefExprBits.RefersToEnclosingVariableOrCapture = Record.readInt();
600   E->DeclRefExprBits.NonOdrUseReason = Record.readInt();
601   unsigned NumTemplateArgs = 0;
602   if (E->hasTemplateKWAndArgsInfo())
603     NumTemplateArgs = Record.readInt();
604 
605   if (E->hasQualifier())
606     new (E->getTrailingObjects<NestedNameSpecifierLoc>())
607         NestedNameSpecifierLoc(Record.readNestedNameSpecifierLoc());
608 
609   if (E->hasFoundDecl())
610     *E->getTrailingObjects<NamedDecl *>() = readDeclAs<NamedDecl>();
611 
612   if (E->hasTemplateKWAndArgsInfo())
613     ReadTemplateKWAndArgsInfo(
614         *E->getTrailingObjects<ASTTemplateKWAndArgsInfo>(),
615         E->getTrailingObjects<TemplateArgumentLoc>(), NumTemplateArgs);
616 
617   E->setDecl(readDeclAs<ValueDecl>());
618   E->setLocation(readSourceLocation());
619   E->DNLoc = Record.readDeclarationNameLoc(E->getDecl()->getDeclName());
620 }
621 
622 void ASTStmtReader::VisitIntegerLiteral(IntegerLiteral *E) {
623   VisitExpr(E);
624   E->setLocation(readSourceLocation());
625   E->setValue(Record.getContext(), Record.readAPInt());
626 }
627 
628 void ASTStmtReader::VisitFixedPointLiteral(FixedPointLiteral *E) {
629   VisitExpr(E);
630   E->setLocation(readSourceLocation());
631   E->setScale(Record.readInt());
632   E->setValue(Record.getContext(), Record.readAPInt());
633 }
634 
635 void ASTStmtReader::VisitFloatingLiteral(FloatingLiteral *E) {
636   VisitExpr(E);
637   E->setRawSemantics(
638       static_cast<llvm::APFloatBase::Semantics>(Record.readInt()));
639   E->setExact(Record.readInt());
640   E->setValue(Record.getContext(), Record.readAPFloat(E->getSemantics()));
641   E->setLocation(readSourceLocation());
642 }
643 
644 void ASTStmtReader::VisitImaginaryLiteral(ImaginaryLiteral *E) {
645   VisitExpr(E);
646   E->setSubExpr(Record.readSubExpr());
647 }
648 
649 void ASTStmtReader::VisitStringLiteral(StringLiteral *E) {
650   VisitExpr(E);
651 
652   // NumConcatenated, Length and CharByteWidth are set by the empty
653   // ctor since they are needed to allocate storage for the trailing objects.
654   unsigned NumConcatenated = Record.readInt();
655   unsigned Length = Record.readInt();
656   unsigned CharByteWidth = Record.readInt();
657   assert((NumConcatenated == E->getNumConcatenated()) &&
658          "Wrong number of concatenated tokens!");
659   assert((Length == E->getLength()) && "Wrong Length!");
660   assert((CharByteWidth == E->getCharByteWidth()) && "Wrong character width!");
661   E->StringLiteralBits.Kind = Record.readInt();
662   E->StringLiteralBits.IsPascal = Record.readInt();
663 
664   // The character width is originally computed via mapCharByteWidth.
665   // Check that the deserialized character width is consistant with the result
666   // of calling mapCharByteWidth.
667   assert((CharByteWidth ==
668           StringLiteral::mapCharByteWidth(Record.getContext().getTargetInfo(),
669                                           E->getKind())) &&
670          "Wrong character width!");
671 
672   // Deserialize the trailing array of SourceLocation.
673   for (unsigned I = 0; I < NumConcatenated; ++I)
674     E->setStrTokenLoc(I, readSourceLocation());
675 
676   // Deserialize the trailing array of char holding the string data.
677   char *StrData = E->getStrDataAsChar();
678   for (unsigned I = 0; I < Length * CharByteWidth; ++I)
679     StrData[I] = Record.readInt();
680 }
681 
682 void ASTStmtReader::VisitCharacterLiteral(CharacterLiteral *E) {
683   VisitExpr(E);
684   E->setValue(Record.readInt());
685   E->setLocation(readSourceLocation());
686   E->setKind(static_cast<CharacterLiteral::CharacterKind>(Record.readInt()));
687 }
688 
689 void ASTStmtReader::VisitParenExpr(ParenExpr *E) {
690   VisitExpr(E);
691   E->setLParen(readSourceLocation());
692   E->setRParen(readSourceLocation());
693   E->setSubExpr(Record.readSubExpr());
694 }
695 
696 void ASTStmtReader::VisitParenListExpr(ParenListExpr *E) {
697   VisitExpr(E);
698   unsigned NumExprs = Record.readInt();
699   assert((NumExprs == E->getNumExprs()) && "Wrong NumExprs!");
700   for (unsigned I = 0; I != NumExprs; ++I)
701     E->getTrailingObjects<Stmt *>()[I] = Record.readSubStmt();
702   E->LParenLoc = readSourceLocation();
703   E->RParenLoc = readSourceLocation();
704 }
705 
706 void ASTStmtReader::VisitUnaryOperator(UnaryOperator *E) {
707   VisitExpr(E);
708   bool hasFP_Features = Record.readInt();
709   assert(hasFP_Features == E->hasStoredFPFeatures());
710   E->setSubExpr(Record.readSubExpr());
711   E->setOpcode((UnaryOperator::Opcode)Record.readInt());
712   E->setOperatorLoc(readSourceLocation());
713   E->setCanOverflow(Record.readInt());
714   if (hasFP_Features)
715     E->setStoredFPFeatures(
716         FPOptionsOverride::getFromOpaqueInt(Record.readInt()));
717 }
718 
719 void ASTStmtReader::VisitOffsetOfExpr(OffsetOfExpr *E) {
720   VisitExpr(E);
721   assert(E->getNumComponents() == Record.peekInt());
722   Record.skipInts(1);
723   assert(E->getNumExpressions() == Record.peekInt());
724   Record.skipInts(1);
725   E->setOperatorLoc(readSourceLocation());
726   E->setRParenLoc(readSourceLocation());
727   E->setTypeSourceInfo(readTypeSourceInfo());
728   for (unsigned I = 0, N = E->getNumComponents(); I != N; ++I) {
729     auto Kind = static_cast<OffsetOfNode::Kind>(Record.readInt());
730     SourceLocation Start = readSourceLocation();
731     SourceLocation End = readSourceLocation();
732     switch (Kind) {
733     case OffsetOfNode::Array:
734       E->setComponent(I, OffsetOfNode(Start, Record.readInt(), End));
735       break;
736 
737     case OffsetOfNode::Field:
738       E->setComponent(
739           I, OffsetOfNode(Start, readDeclAs<FieldDecl>(), End));
740       break;
741 
742     case OffsetOfNode::Identifier:
743       E->setComponent(
744           I,
745           OffsetOfNode(Start, Record.readIdentifier(), End));
746       break;
747 
748     case OffsetOfNode::Base: {
749       auto *Base = new (Record.getContext()) CXXBaseSpecifier();
750       *Base = Record.readCXXBaseSpecifier();
751       E->setComponent(I, OffsetOfNode(Base));
752       break;
753     }
754     }
755   }
756 
757   for (unsigned I = 0, N = E->getNumExpressions(); I != N; ++I)
758     E->setIndexExpr(I, Record.readSubExpr());
759 }
760 
761 void ASTStmtReader::VisitUnaryExprOrTypeTraitExpr(UnaryExprOrTypeTraitExpr *E) {
762   VisitExpr(E);
763   E->setKind(static_cast<UnaryExprOrTypeTrait>(Record.readInt()));
764   if (Record.peekInt() == 0) {
765     E->setArgument(Record.readSubExpr());
766     Record.skipInts(1);
767   } else {
768     E->setArgument(readTypeSourceInfo());
769   }
770   E->setOperatorLoc(readSourceLocation());
771   E->setRParenLoc(readSourceLocation());
772 }
773 
774 static ConstraintSatisfaction
775 readConstraintSatisfaction(ASTRecordReader &Record) {
776   ConstraintSatisfaction Satisfaction;
777   Satisfaction.IsSatisfied = Record.readInt();
778   if (!Satisfaction.IsSatisfied) {
779     unsigned NumDetailRecords = Record.readInt();
780     for (unsigned i = 0; i != NumDetailRecords; ++i) {
781       Expr *ConstraintExpr = Record.readExpr();
782       if (/* IsDiagnostic */Record.readInt()) {
783         SourceLocation DiagLocation = Record.readSourceLocation();
784         std::string DiagMessage = Record.readString();
785         Satisfaction.Details.emplace_back(
786             ConstraintExpr, new (Record.getContext())
787                                 ConstraintSatisfaction::SubstitutionDiagnostic{
788                                     DiagLocation, DiagMessage});
789       } else
790         Satisfaction.Details.emplace_back(ConstraintExpr, Record.readExpr());
791     }
792   }
793   return Satisfaction;
794 }
795 
796 void ASTStmtReader::VisitConceptSpecializationExpr(
797         ConceptSpecializationExpr *E) {
798   VisitExpr(E);
799   unsigned NumTemplateArgs = Record.readInt();
800   E->NestedNameSpec = Record.readNestedNameSpecifierLoc();
801   E->TemplateKWLoc = Record.readSourceLocation();
802   E->ConceptName = Record.readDeclarationNameInfo();
803   E->NamedConcept = readDeclAs<ConceptDecl>();
804   E->FoundDecl = Record.readDeclAs<NamedDecl>();
805   E->ArgsAsWritten = Record.readASTTemplateArgumentListInfo();
806   llvm::SmallVector<TemplateArgument, 4> Args;
807   for (unsigned I = 0; I < NumTemplateArgs; ++I)
808     Args.push_back(Record.readTemplateArgument());
809   E->setTemplateArguments(Args);
810   E->Satisfaction = E->isValueDependent() ? nullptr :
811       ASTConstraintSatisfaction::Create(Record.getContext(),
812                                         readConstraintSatisfaction(Record));
813 }
814 
815 static concepts::Requirement::SubstitutionDiagnostic *
816 readSubstitutionDiagnostic(ASTRecordReader &Record) {
817   std::string SubstitutedEntity = Record.readString();
818   SourceLocation DiagLoc = Record.readSourceLocation();
819   std::string DiagMessage = Record.readString();
820   return new (Record.getContext())
821       concepts::Requirement::SubstitutionDiagnostic{SubstitutedEntity, DiagLoc,
822                                                     DiagMessage};
823 }
824 
825 void ASTStmtReader::VisitRequiresExpr(RequiresExpr *E) {
826   VisitExpr(E);
827   unsigned NumLocalParameters = Record.readInt();
828   unsigned NumRequirements = Record.readInt();
829   E->RequiresExprBits.RequiresKWLoc = Record.readSourceLocation();
830   E->RequiresExprBits.IsSatisfied = Record.readInt();
831   E->Body = Record.readDeclAs<RequiresExprBodyDecl>();
832   llvm::SmallVector<ParmVarDecl *, 4> LocalParameters;
833   for (unsigned i = 0; i < NumLocalParameters; ++i)
834     LocalParameters.push_back(cast<ParmVarDecl>(Record.readDecl()));
835   std::copy(LocalParameters.begin(), LocalParameters.end(),
836             E->getTrailingObjects<ParmVarDecl *>());
837   llvm::SmallVector<concepts::Requirement *, 4> Requirements;
838   for (unsigned i = 0; i < NumRequirements; ++i) {
839     auto RK =
840         static_cast<concepts::Requirement::RequirementKind>(Record.readInt());
841     concepts::Requirement *R = nullptr;
842     switch (RK) {
843       case concepts::Requirement::RK_Type: {
844         auto Status =
845             static_cast<concepts::TypeRequirement::SatisfactionStatus>(
846                 Record.readInt());
847         if (Status == concepts::TypeRequirement::SS_SubstitutionFailure)
848           R = new (Record.getContext())
849               concepts::TypeRequirement(readSubstitutionDiagnostic(Record));
850         else
851           R = new (Record.getContext())
852               concepts::TypeRequirement(Record.readTypeSourceInfo());
853       } break;
854       case concepts::Requirement::RK_Simple:
855       case concepts::Requirement::RK_Compound: {
856         auto Status =
857             static_cast<concepts::ExprRequirement::SatisfactionStatus>(
858                 Record.readInt());
859         llvm::PointerUnion<concepts::Requirement::SubstitutionDiagnostic *,
860                            Expr *> E;
861         if (Status == concepts::ExprRequirement::SS_ExprSubstitutionFailure) {
862           E = readSubstitutionDiagnostic(Record);
863         } else
864           E = Record.readExpr();
865 
866         llvm::Optional<concepts::ExprRequirement::ReturnTypeRequirement> Req;
867         ConceptSpecializationExpr *SubstitutedConstraintExpr = nullptr;
868         SourceLocation NoexceptLoc;
869         if (RK == concepts::Requirement::RK_Simple) {
870           Req.emplace();
871         } else {
872           NoexceptLoc = Record.readSourceLocation();
873           switch (/* returnTypeRequirementKind */Record.readInt()) {
874             case 0:
875               // No return type requirement.
876               Req.emplace();
877               break;
878             case 1: {
879               // type-constraint
880               TemplateParameterList *TPL = Record.readTemplateParameterList();
881               if (Status >=
882                   concepts::ExprRequirement::SS_ConstraintsNotSatisfied)
883                 SubstitutedConstraintExpr =
884                     cast<ConceptSpecializationExpr>(Record.readExpr());
885               Req.emplace(TPL);
886             } break;
887             case 2:
888               // Substitution failure
889               Req.emplace(readSubstitutionDiagnostic(Record));
890               break;
891           }
892         }
893         if (Expr *Ex = E.dyn_cast<Expr *>())
894           R = new (Record.getContext()) concepts::ExprRequirement(
895                   Ex, RK == concepts::Requirement::RK_Simple, NoexceptLoc,
896                   std::move(*Req), Status, SubstitutedConstraintExpr);
897         else
898           R = new (Record.getContext()) concepts::ExprRequirement(
899                   E.get<concepts::Requirement::SubstitutionDiagnostic *>(),
900                   RK == concepts::Requirement::RK_Simple, NoexceptLoc,
901                   std::move(*Req));
902       } break;
903       case concepts::Requirement::RK_Nested: {
904         if (/* IsSubstitutionDiagnostic */Record.readInt()) {
905           R = new (Record.getContext()) concepts::NestedRequirement(
906               readSubstitutionDiagnostic(Record));
907           break;
908         }
909         Expr *E = Record.readExpr();
910         if (E->isInstantiationDependent())
911           R = new (Record.getContext()) concepts::NestedRequirement(E);
912         else
913           R = new (Record.getContext())
914               concepts::NestedRequirement(Record.getContext(), E,
915                                           readConstraintSatisfaction(Record));
916       } break;
917     }
918     if (!R)
919       continue;
920     Requirements.push_back(R);
921   }
922   std::copy(Requirements.begin(), Requirements.end(),
923             E->getTrailingObjects<concepts::Requirement *>());
924   E->RBraceLoc = Record.readSourceLocation();
925 }
926 
927 void ASTStmtReader::VisitArraySubscriptExpr(ArraySubscriptExpr *E) {
928   VisitExpr(E);
929   E->setLHS(Record.readSubExpr());
930   E->setRHS(Record.readSubExpr());
931   E->setRBracketLoc(readSourceLocation());
932 }
933 
934 void ASTStmtReader::VisitMatrixSubscriptExpr(MatrixSubscriptExpr *E) {
935   VisitExpr(E);
936   E->setBase(Record.readSubExpr());
937   E->setRowIdx(Record.readSubExpr());
938   E->setColumnIdx(Record.readSubExpr());
939   E->setRBracketLoc(readSourceLocation());
940 }
941 
942 void ASTStmtReader::VisitOMPArraySectionExpr(OMPArraySectionExpr *E) {
943   VisitExpr(E);
944   E->setBase(Record.readSubExpr());
945   E->setLowerBound(Record.readSubExpr());
946   E->setLength(Record.readSubExpr());
947   E->setStride(Record.readSubExpr());
948   E->setColonLocFirst(readSourceLocation());
949   E->setColonLocSecond(readSourceLocation());
950   E->setRBracketLoc(readSourceLocation());
951 }
952 
953 void ASTStmtReader::VisitOMPArrayShapingExpr(OMPArrayShapingExpr *E) {
954   VisitExpr(E);
955   unsigned NumDims = Record.readInt();
956   E->setBase(Record.readSubExpr());
957   SmallVector<Expr *, 4> Dims(NumDims);
958   for (unsigned I = 0; I < NumDims; ++I)
959     Dims[I] = Record.readSubExpr();
960   E->setDimensions(Dims);
961   SmallVector<SourceRange, 4> SRs(NumDims);
962   for (unsigned I = 0; I < NumDims; ++I)
963     SRs[I] = readSourceRange();
964   E->setBracketsRanges(SRs);
965   E->setLParenLoc(readSourceLocation());
966   E->setRParenLoc(readSourceLocation());
967 }
968 
969 void ASTStmtReader::VisitOMPIteratorExpr(OMPIteratorExpr *E) {
970   VisitExpr(E);
971   unsigned NumIters = Record.readInt();
972   E->setIteratorKwLoc(readSourceLocation());
973   E->setLParenLoc(readSourceLocation());
974   E->setRParenLoc(readSourceLocation());
975   for (unsigned I = 0; I < NumIters; ++I) {
976     E->setIteratorDeclaration(I, Record.readDeclRef());
977     E->setAssignmentLoc(I, readSourceLocation());
978     Expr *Begin = Record.readSubExpr();
979     Expr *End = Record.readSubExpr();
980     Expr *Step = Record.readSubExpr();
981     SourceLocation ColonLoc = readSourceLocation();
982     SourceLocation SecColonLoc;
983     if (Step)
984       SecColonLoc = readSourceLocation();
985     E->setIteratorRange(I, Begin, ColonLoc, End, SecColonLoc, Step);
986     // Deserialize helpers
987     OMPIteratorHelperData HD;
988     HD.CounterVD = cast_or_null<VarDecl>(Record.readDeclRef());
989     HD.Upper = Record.readSubExpr();
990     HD.Update = Record.readSubExpr();
991     HD.CounterUpdate = Record.readSubExpr();
992     E->setHelper(I, HD);
993   }
994 }
995 
996 void ASTStmtReader::VisitCallExpr(CallExpr *E) {
997   VisitExpr(E);
998   unsigned NumArgs = Record.readInt();
999   bool HasFPFeatures = Record.readInt();
1000   assert((NumArgs == E->getNumArgs()) && "Wrong NumArgs!");
1001   E->setRParenLoc(readSourceLocation());
1002   E->setCallee(Record.readSubExpr());
1003   for (unsigned I = 0; I != NumArgs; ++I)
1004     E->setArg(I, Record.readSubExpr());
1005   E->setADLCallKind(static_cast<CallExpr::ADLCallKind>(Record.readInt()));
1006   if (HasFPFeatures)
1007     E->setStoredFPFeatures(
1008         FPOptionsOverride::getFromOpaqueInt(Record.readInt()));
1009 }
1010 
1011 void ASTStmtReader::VisitCXXMemberCallExpr(CXXMemberCallExpr *E) {
1012   VisitCallExpr(E);
1013 }
1014 
1015 void ASTStmtReader::VisitMemberExpr(MemberExpr *E) {
1016   VisitExpr(E);
1017 
1018   bool HasQualifier = Record.readInt();
1019   bool HasFoundDecl = Record.readInt();
1020   bool HasTemplateInfo = Record.readInt();
1021   unsigned NumTemplateArgs = Record.readInt();
1022 
1023   E->Base = Record.readSubExpr();
1024   E->MemberDecl = Record.readDeclAs<ValueDecl>();
1025   E->MemberDNLoc = Record.readDeclarationNameLoc(E->MemberDecl->getDeclName());
1026   E->MemberLoc = Record.readSourceLocation();
1027   E->MemberExprBits.IsArrow = Record.readInt();
1028   E->MemberExprBits.HasQualifierOrFoundDecl = HasQualifier || HasFoundDecl;
1029   E->MemberExprBits.HasTemplateKWAndArgsInfo = HasTemplateInfo;
1030   E->MemberExprBits.HadMultipleCandidates = Record.readInt();
1031   E->MemberExprBits.NonOdrUseReason = Record.readInt();
1032   E->MemberExprBits.OperatorLoc = Record.readSourceLocation();
1033 
1034   if (HasQualifier || HasFoundDecl) {
1035     DeclAccessPair FoundDecl;
1036     if (HasFoundDecl) {
1037       auto *FoundD = Record.readDeclAs<NamedDecl>();
1038       auto AS = (AccessSpecifier)Record.readInt();
1039       FoundDecl = DeclAccessPair::make(FoundD, AS);
1040     } else {
1041       FoundDecl = DeclAccessPair::make(E->MemberDecl,
1042                                        E->MemberDecl->getAccess());
1043     }
1044     E->getTrailingObjects<MemberExprNameQualifier>()->FoundDecl = FoundDecl;
1045 
1046     NestedNameSpecifierLoc QualifierLoc;
1047     if (HasQualifier)
1048       QualifierLoc = Record.readNestedNameSpecifierLoc();
1049     E->getTrailingObjects<MemberExprNameQualifier>()->QualifierLoc =
1050         QualifierLoc;
1051   }
1052 
1053   if (HasTemplateInfo)
1054     ReadTemplateKWAndArgsInfo(
1055         *E->getTrailingObjects<ASTTemplateKWAndArgsInfo>(),
1056         E->getTrailingObjects<TemplateArgumentLoc>(), NumTemplateArgs);
1057 }
1058 
1059 void ASTStmtReader::VisitObjCIsaExpr(ObjCIsaExpr *E) {
1060   VisitExpr(E);
1061   E->setBase(Record.readSubExpr());
1062   E->setIsaMemberLoc(readSourceLocation());
1063   E->setOpLoc(readSourceLocation());
1064   E->setArrow(Record.readInt());
1065 }
1066 
1067 void ASTStmtReader::
1068 VisitObjCIndirectCopyRestoreExpr(ObjCIndirectCopyRestoreExpr *E) {
1069   VisitExpr(E);
1070   E->Operand = Record.readSubExpr();
1071   E->setShouldCopy(Record.readInt());
1072 }
1073 
1074 void ASTStmtReader::VisitObjCBridgedCastExpr(ObjCBridgedCastExpr *E) {
1075   VisitExplicitCastExpr(E);
1076   E->LParenLoc = readSourceLocation();
1077   E->BridgeKeywordLoc = readSourceLocation();
1078   E->Kind = Record.readInt();
1079 }
1080 
1081 void ASTStmtReader::VisitCastExpr(CastExpr *E) {
1082   VisitExpr(E);
1083   unsigned NumBaseSpecs = Record.readInt();
1084   assert(NumBaseSpecs == E->path_size());
1085   E->setSubExpr(Record.readSubExpr());
1086   E->setCastKind((CastKind)Record.readInt());
1087   CastExpr::path_iterator BaseI = E->path_begin();
1088   while (NumBaseSpecs--) {
1089     auto *BaseSpec = new (Record.getContext()) CXXBaseSpecifier;
1090     *BaseSpec = Record.readCXXBaseSpecifier();
1091     *BaseI++ = BaseSpec;
1092   }
1093 }
1094 
1095 void ASTStmtReader::VisitBinaryOperator(BinaryOperator *E) {
1096   bool hasFP_Features;
1097   BinaryOperator::Opcode opc;
1098   VisitExpr(E);
1099   E->setHasStoredFPFeatures(hasFP_Features = Record.readInt());
1100   E->setOpcode(opc = (BinaryOperator::Opcode)Record.readInt());
1101   E->setLHS(Record.readSubExpr());
1102   E->setRHS(Record.readSubExpr());
1103   E->setOperatorLoc(readSourceLocation());
1104   if (hasFP_Features)
1105     E->setStoredFPFeatures(
1106         FPOptionsOverride::getFromOpaqueInt(Record.readInt()));
1107 }
1108 
1109 void ASTStmtReader::VisitCompoundAssignOperator(CompoundAssignOperator *E) {
1110   VisitBinaryOperator(E);
1111   E->setComputationLHSType(Record.readType());
1112   E->setComputationResultType(Record.readType());
1113 }
1114 
1115 void ASTStmtReader::VisitConditionalOperator(ConditionalOperator *E) {
1116   VisitExpr(E);
1117   E->SubExprs[ConditionalOperator::COND] = Record.readSubExpr();
1118   E->SubExprs[ConditionalOperator::LHS] = Record.readSubExpr();
1119   E->SubExprs[ConditionalOperator::RHS] = Record.readSubExpr();
1120   E->QuestionLoc = readSourceLocation();
1121   E->ColonLoc = readSourceLocation();
1122 }
1123 
1124 void
1125 ASTStmtReader::VisitBinaryConditionalOperator(BinaryConditionalOperator *E) {
1126   VisitExpr(E);
1127   E->OpaqueValue = cast<OpaqueValueExpr>(Record.readSubExpr());
1128   E->SubExprs[BinaryConditionalOperator::COMMON] = Record.readSubExpr();
1129   E->SubExprs[BinaryConditionalOperator::COND] = Record.readSubExpr();
1130   E->SubExprs[BinaryConditionalOperator::LHS] = Record.readSubExpr();
1131   E->SubExprs[BinaryConditionalOperator::RHS] = Record.readSubExpr();
1132   E->QuestionLoc = readSourceLocation();
1133   E->ColonLoc = readSourceLocation();
1134 }
1135 
1136 void ASTStmtReader::VisitImplicitCastExpr(ImplicitCastExpr *E) {
1137   VisitCastExpr(E);
1138   E->setIsPartOfExplicitCast(Record.readInt());
1139 }
1140 
1141 void ASTStmtReader::VisitExplicitCastExpr(ExplicitCastExpr *E) {
1142   VisitCastExpr(E);
1143   E->setTypeInfoAsWritten(readTypeSourceInfo());
1144 }
1145 
1146 void ASTStmtReader::VisitCStyleCastExpr(CStyleCastExpr *E) {
1147   VisitExplicitCastExpr(E);
1148   E->setLParenLoc(readSourceLocation());
1149   E->setRParenLoc(readSourceLocation());
1150 }
1151 
1152 void ASTStmtReader::VisitCompoundLiteralExpr(CompoundLiteralExpr *E) {
1153   VisitExpr(E);
1154   E->setLParenLoc(readSourceLocation());
1155   E->setTypeSourceInfo(readTypeSourceInfo());
1156   E->setInitializer(Record.readSubExpr());
1157   E->setFileScope(Record.readInt());
1158 }
1159 
1160 void ASTStmtReader::VisitExtVectorElementExpr(ExtVectorElementExpr *E) {
1161   VisitExpr(E);
1162   E->setBase(Record.readSubExpr());
1163   E->setAccessor(Record.readIdentifier());
1164   E->setAccessorLoc(readSourceLocation());
1165 }
1166 
1167 void ASTStmtReader::VisitInitListExpr(InitListExpr *E) {
1168   VisitExpr(E);
1169   if (auto *SyntForm = cast_or_null<InitListExpr>(Record.readSubStmt()))
1170     E->setSyntacticForm(SyntForm);
1171   E->setLBraceLoc(readSourceLocation());
1172   E->setRBraceLoc(readSourceLocation());
1173   bool isArrayFiller = Record.readInt();
1174   Expr *filler = nullptr;
1175   if (isArrayFiller) {
1176     filler = Record.readSubExpr();
1177     E->ArrayFillerOrUnionFieldInit = filler;
1178   } else
1179     E->ArrayFillerOrUnionFieldInit = readDeclAs<FieldDecl>();
1180   E->sawArrayRangeDesignator(Record.readInt());
1181   unsigned NumInits = Record.readInt();
1182   E->reserveInits(Record.getContext(), NumInits);
1183   if (isArrayFiller) {
1184     for (unsigned I = 0; I != NumInits; ++I) {
1185       Expr *init = Record.readSubExpr();
1186       E->updateInit(Record.getContext(), I, init ? init : filler);
1187     }
1188   } else {
1189     for (unsigned I = 0; I != NumInits; ++I)
1190       E->updateInit(Record.getContext(), I, Record.readSubExpr());
1191   }
1192 }
1193 
1194 void ASTStmtReader::VisitDesignatedInitExpr(DesignatedInitExpr *E) {
1195   using Designator = DesignatedInitExpr::Designator;
1196 
1197   VisitExpr(E);
1198   unsigned NumSubExprs = Record.readInt();
1199   assert(NumSubExprs == E->getNumSubExprs() && "Wrong number of subexprs");
1200   for (unsigned I = 0; I != NumSubExprs; ++I)
1201     E->setSubExpr(I, Record.readSubExpr());
1202   E->setEqualOrColonLoc(readSourceLocation());
1203   E->setGNUSyntax(Record.readInt());
1204 
1205   SmallVector<Designator, 4> Designators;
1206   while (Record.getIdx() < Record.size()) {
1207     switch ((DesignatorTypes)Record.readInt()) {
1208     case DESIG_FIELD_DECL: {
1209       auto *Field = readDeclAs<FieldDecl>();
1210       SourceLocation DotLoc = readSourceLocation();
1211       SourceLocation FieldLoc = readSourceLocation();
1212       Designators.push_back(Designator(Field->getIdentifier(), DotLoc,
1213                                        FieldLoc));
1214       Designators.back().setField(Field);
1215       break;
1216     }
1217 
1218     case DESIG_FIELD_NAME: {
1219       const IdentifierInfo *Name = Record.readIdentifier();
1220       SourceLocation DotLoc = readSourceLocation();
1221       SourceLocation FieldLoc = readSourceLocation();
1222       Designators.push_back(Designator(Name, DotLoc, FieldLoc));
1223       break;
1224     }
1225 
1226     case DESIG_ARRAY: {
1227       unsigned Index = Record.readInt();
1228       SourceLocation LBracketLoc = readSourceLocation();
1229       SourceLocation RBracketLoc = readSourceLocation();
1230       Designators.push_back(Designator(Index, LBracketLoc, RBracketLoc));
1231       break;
1232     }
1233 
1234     case DESIG_ARRAY_RANGE: {
1235       unsigned Index = Record.readInt();
1236       SourceLocation LBracketLoc = readSourceLocation();
1237       SourceLocation EllipsisLoc = readSourceLocation();
1238       SourceLocation RBracketLoc = readSourceLocation();
1239       Designators.push_back(Designator(Index, LBracketLoc, EllipsisLoc,
1240                                        RBracketLoc));
1241       break;
1242     }
1243     }
1244   }
1245   E->setDesignators(Record.getContext(),
1246                     Designators.data(), Designators.size());
1247 }
1248 
1249 void ASTStmtReader::VisitDesignatedInitUpdateExpr(DesignatedInitUpdateExpr *E) {
1250   VisitExpr(E);
1251   E->setBase(Record.readSubExpr());
1252   E->setUpdater(Record.readSubExpr());
1253 }
1254 
1255 void ASTStmtReader::VisitNoInitExpr(NoInitExpr *E) {
1256   VisitExpr(E);
1257 }
1258 
1259 void ASTStmtReader::VisitArrayInitLoopExpr(ArrayInitLoopExpr *E) {
1260   VisitExpr(E);
1261   E->SubExprs[0] = Record.readSubExpr();
1262   E->SubExprs[1] = Record.readSubExpr();
1263 }
1264 
1265 void ASTStmtReader::VisitArrayInitIndexExpr(ArrayInitIndexExpr *E) {
1266   VisitExpr(E);
1267 }
1268 
1269 void ASTStmtReader::VisitImplicitValueInitExpr(ImplicitValueInitExpr *E) {
1270   VisitExpr(E);
1271 }
1272 
1273 void ASTStmtReader::VisitVAArgExpr(VAArgExpr *E) {
1274   VisitExpr(E);
1275   E->setSubExpr(Record.readSubExpr());
1276   E->setWrittenTypeInfo(readTypeSourceInfo());
1277   E->setBuiltinLoc(readSourceLocation());
1278   E->setRParenLoc(readSourceLocation());
1279   E->setIsMicrosoftABI(Record.readInt());
1280 }
1281 
1282 void ASTStmtReader::VisitSourceLocExpr(SourceLocExpr *E) {
1283   VisitExpr(E);
1284   E->ParentContext = readDeclAs<DeclContext>();
1285   E->BuiltinLoc = readSourceLocation();
1286   E->RParenLoc = readSourceLocation();
1287   E->SourceLocExprBits.Kind =
1288       static_cast<SourceLocExpr::IdentKind>(Record.readInt());
1289 }
1290 
1291 void ASTStmtReader::VisitAddrLabelExpr(AddrLabelExpr *E) {
1292   VisitExpr(E);
1293   E->setAmpAmpLoc(readSourceLocation());
1294   E->setLabelLoc(readSourceLocation());
1295   E->setLabel(readDeclAs<LabelDecl>());
1296 }
1297 
1298 void ASTStmtReader::VisitStmtExpr(StmtExpr *E) {
1299   VisitExpr(E);
1300   E->setLParenLoc(readSourceLocation());
1301   E->setRParenLoc(readSourceLocation());
1302   E->setSubStmt(cast_or_null<CompoundStmt>(Record.readSubStmt()));
1303   E->StmtExprBits.TemplateDepth = Record.readInt();
1304 }
1305 
1306 void ASTStmtReader::VisitChooseExpr(ChooseExpr *E) {
1307   VisitExpr(E);
1308   E->setCond(Record.readSubExpr());
1309   E->setLHS(Record.readSubExpr());
1310   E->setRHS(Record.readSubExpr());
1311   E->setBuiltinLoc(readSourceLocation());
1312   E->setRParenLoc(readSourceLocation());
1313   E->setIsConditionTrue(Record.readInt());
1314 }
1315 
1316 void ASTStmtReader::VisitGNUNullExpr(GNUNullExpr *E) {
1317   VisitExpr(E);
1318   E->setTokenLocation(readSourceLocation());
1319 }
1320 
1321 void ASTStmtReader::VisitShuffleVectorExpr(ShuffleVectorExpr *E) {
1322   VisitExpr(E);
1323   SmallVector<Expr *, 16> Exprs;
1324   unsigned NumExprs = Record.readInt();
1325   while (NumExprs--)
1326     Exprs.push_back(Record.readSubExpr());
1327   E->setExprs(Record.getContext(), Exprs);
1328   E->setBuiltinLoc(readSourceLocation());
1329   E->setRParenLoc(readSourceLocation());
1330 }
1331 
1332 void ASTStmtReader::VisitConvertVectorExpr(ConvertVectorExpr *E) {
1333   VisitExpr(E);
1334   E->BuiltinLoc = readSourceLocation();
1335   E->RParenLoc = readSourceLocation();
1336   E->TInfo = readTypeSourceInfo();
1337   E->SrcExpr = Record.readSubExpr();
1338 }
1339 
1340 void ASTStmtReader::VisitBlockExpr(BlockExpr *E) {
1341   VisitExpr(E);
1342   E->setBlockDecl(readDeclAs<BlockDecl>());
1343 }
1344 
1345 void ASTStmtReader::VisitGenericSelectionExpr(GenericSelectionExpr *E) {
1346   VisitExpr(E);
1347 
1348   unsigned NumAssocs = Record.readInt();
1349   assert(NumAssocs == E->getNumAssocs() && "Wrong NumAssocs!");
1350   E->ResultIndex = Record.readInt();
1351   E->GenericSelectionExprBits.GenericLoc = readSourceLocation();
1352   E->DefaultLoc = readSourceLocation();
1353   E->RParenLoc = readSourceLocation();
1354 
1355   Stmt **Stmts = E->getTrailingObjects<Stmt *>();
1356   // Add 1 to account for the controlling expression which is the first
1357   // expression in the trailing array of Stmt *. This is not needed for
1358   // the trailing array of TypeSourceInfo *.
1359   for (unsigned I = 0, N = NumAssocs + 1; I < N; ++I)
1360     Stmts[I] = Record.readSubExpr();
1361 
1362   TypeSourceInfo **TSIs = E->getTrailingObjects<TypeSourceInfo *>();
1363   for (unsigned I = 0, N = NumAssocs; I < N; ++I)
1364     TSIs[I] = readTypeSourceInfo();
1365 }
1366 
1367 void ASTStmtReader::VisitPseudoObjectExpr(PseudoObjectExpr *E) {
1368   VisitExpr(E);
1369   unsigned numSemanticExprs = Record.readInt();
1370   assert(numSemanticExprs + 1 == E->PseudoObjectExprBits.NumSubExprs);
1371   E->PseudoObjectExprBits.ResultIndex = Record.readInt();
1372 
1373   // Read the syntactic expression.
1374   E->getSubExprsBuffer()[0] = Record.readSubExpr();
1375 
1376   // Read all the semantic expressions.
1377   for (unsigned i = 0; i != numSemanticExprs; ++i) {
1378     Expr *subExpr = Record.readSubExpr();
1379     E->getSubExprsBuffer()[i+1] = subExpr;
1380   }
1381 }
1382 
1383 void ASTStmtReader::VisitAtomicExpr(AtomicExpr *E) {
1384   VisitExpr(E);
1385   E->Op = AtomicExpr::AtomicOp(Record.readInt());
1386   E->NumSubExprs = AtomicExpr::getNumSubExprs(E->Op);
1387   for (unsigned I = 0; I != E->NumSubExprs; ++I)
1388     E->SubExprs[I] = Record.readSubExpr();
1389   E->BuiltinLoc = readSourceLocation();
1390   E->RParenLoc = readSourceLocation();
1391 }
1392 
1393 //===----------------------------------------------------------------------===//
1394 // Objective-C Expressions and Statements
1395 
1396 void ASTStmtReader::VisitObjCStringLiteral(ObjCStringLiteral *E) {
1397   VisitExpr(E);
1398   E->setString(cast<StringLiteral>(Record.readSubStmt()));
1399   E->setAtLoc(readSourceLocation());
1400 }
1401 
1402 void ASTStmtReader::VisitObjCBoxedExpr(ObjCBoxedExpr *E) {
1403   VisitExpr(E);
1404   // could be one of several IntegerLiteral, FloatLiteral, etc.
1405   E->SubExpr = Record.readSubStmt();
1406   E->BoxingMethod = readDeclAs<ObjCMethodDecl>();
1407   E->Range = readSourceRange();
1408 }
1409 
1410 void ASTStmtReader::VisitObjCArrayLiteral(ObjCArrayLiteral *E) {
1411   VisitExpr(E);
1412   unsigned NumElements = Record.readInt();
1413   assert(NumElements == E->getNumElements() && "Wrong number of elements");
1414   Expr **Elements = E->getElements();
1415   for (unsigned I = 0, N = NumElements; I != N; ++I)
1416     Elements[I] = Record.readSubExpr();
1417   E->ArrayWithObjectsMethod = readDeclAs<ObjCMethodDecl>();
1418   E->Range = readSourceRange();
1419 }
1420 
1421 void ASTStmtReader::VisitObjCDictionaryLiteral(ObjCDictionaryLiteral *E) {
1422   VisitExpr(E);
1423   unsigned NumElements = Record.readInt();
1424   assert(NumElements == E->getNumElements() && "Wrong number of elements");
1425   bool HasPackExpansions = Record.readInt();
1426   assert(HasPackExpansions == E->HasPackExpansions &&"Pack expansion mismatch");
1427   auto *KeyValues =
1428       E->getTrailingObjects<ObjCDictionaryLiteral::KeyValuePair>();
1429   auto *Expansions =
1430       E->getTrailingObjects<ObjCDictionaryLiteral::ExpansionData>();
1431   for (unsigned I = 0; I != NumElements; ++I) {
1432     KeyValues[I].Key = Record.readSubExpr();
1433     KeyValues[I].Value = Record.readSubExpr();
1434     if (HasPackExpansions) {
1435       Expansions[I].EllipsisLoc = readSourceLocation();
1436       Expansions[I].NumExpansionsPlusOne = Record.readInt();
1437     }
1438   }
1439   E->DictWithObjectsMethod = readDeclAs<ObjCMethodDecl>();
1440   E->Range = readSourceRange();
1441 }
1442 
1443 void ASTStmtReader::VisitObjCEncodeExpr(ObjCEncodeExpr *E) {
1444   VisitExpr(E);
1445   E->setEncodedTypeSourceInfo(readTypeSourceInfo());
1446   E->setAtLoc(readSourceLocation());
1447   E->setRParenLoc(readSourceLocation());
1448 }
1449 
1450 void ASTStmtReader::VisitObjCSelectorExpr(ObjCSelectorExpr *E) {
1451   VisitExpr(E);
1452   E->setSelector(Record.readSelector());
1453   E->setAtLoc(readSourceLocation());
1454   E->setRParenLoc(readSourceLocation());
1455 }
1456 
1457 void ASTStmtReader::VisitObjCProtocolExpr(ObjCProtocolExpr *E) {
1458   VisitExpr(E);
1459   E->setProtocol(readDeclAs<ObjCProtocolDecl>());
1460   E->setAtLoc(readSourceLocation());
1461   E->ProtoLoc = readSourceLocation();
1462   E->setRParenLoc(readSourceLocation());
1463 }
1464 
1465 void ASTStmtReader::VisitObjCIvarRefExpr(ObjCIvarRefExpr *E) {
1466   VisitExpr(E);
1467   E->setDecl(readDeclAs<ObjCIvarDecl>());
1468   E->setLocation(readSourceLocation());
1469   E->setOpLoc(readSourceLocation());
1470   E->setBase(Record.readSubExpr());
1471   E->setIsArrow(Record.readInt());
1472   E->setIsFreeIvar(Record.readInt());
1473 }
1474 
1475 void ASTStmtReader::VisitObjCPropertyRefExpr(ObjCPropertyRefExpr *E) {
1476   VisitExpr(E);
1477   unsigned MethodRefFlags = Record.readInt();
1478   bool Implicit = Record.readInt() != 0;
1479   if (Implicit) {
1480     auto *Getter = readDeclAs<ObjCMethodDecl>();
1481     auto *Setter = readDeclAs<ObjCMethodDecl>();
1482     E->setImplicitProperty(Getter, Setter, MethodRefFlags);
1483   } else {
1484     E->setExplicitProperty(readDeclAs<ObjCPropertyDecl>(), MethodRefFlags);
1485   }
1486   E->setLocation(readSourceLocation());
1487   E->setReceiverLocation(readSourceLocation());
1488   switch (Record.readInt()) {
1489   case 0:
1490     E->setBase(Record.readSubExpr());
1491     break;
1492   case 1:
1493     E->setSuperReceiver(Record.readType());
1494     break;
1495   case 2:
1496     E->setClassReceiver(readDeclAs<ObjCInterfaceDecl>());
1497     break;
1498   }
1499 }
1500 
1501 void ASTStmtReader::VisitObjCSubscriptRefExpr(ObjCSubscriptRefExpr *E) {
1502   VisitExpr(E);
1503   E->setRBracket(readSourceLocation());
1504   E->setBaseExpr(Record.readSubExpr());
1505   E->setKeyExpr(Record.readSubExpr());
1506   E->GetAtIndexMethodDecl = readDeclAs<ObjCMethodDecl>();
1507   E->SetAtIndexMethodDecl = readDeclAs<ObjCMethodDecl>();
1508 }
1509 
1510 void ASTStmtReader::VisitObjCMessageExpr(ObjCMessageExpr *E) {
1511   VisitExpr(E);
1512   assert(Record.peekInt() == E->getNumArgs());
1513   Record.skipInts(1);
1514   unsigned NumStoredSelLocs = Record.readInt();
1515   E->SelLocsKind = Record.readInt();
1516   E->setDelegateInitCall(Record.readInt());
1517   E->IsImplicit = Record.readInt();
1518   auto Kind = static_cast<ObjCMessageExpr::ReceiverKind>(Record.readInt());
1519   switch (Kind) {
1520   case ObjCMessageExpr::Instance:
1521     E->setInstanceReceiver(Record.readSubExpr());
1522     break;
1523 
1524   case ObjCMessageExpr::Class:
1525     E->setClassReceiver(readTypeSourceInfo());
1526     break;
1527 
1528   case ObjCMessageExpr::SuperClass:
1529   case ObjCMessageExpr::SuperInstance: {
1530     QualType T = Record.readType();
1531     SourceLocation SuperLoc = readSourceLocation();
1532     E->setSuper(SuperLoc, T, Kind == ObjCMessageExpr::SuperInstance);
1533     break;
1534   }
1535   }
1536 
1537   assert(Kind == E->getReceiverKind());
1538 
1539   if (Record.readInt())
1540     E->setMethodDecl(readDeclAs<ObjCMethodDecl>());
1541   else
1542     E->setSelector(Record.readSelector());
1543 
1544   E->LBracLoc = readSourceLocation();
1545   E->RBracLoc = readSourceLocation();
1546 
1547   for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
1548     E->setArg(I, Record.readSubExpr());
1549 
1550   SourceLocation *Locs = E->getStoredSelLocs();
1551   for (unsigned I = 0; I != NumStoredSelLocs; ++I)
1552     Locs[I] = readSourceLocation();
1553 }
1554 
1555 void ASTStmtReader::VisitObjCForCollectionStmt(ObjCForCollectionStmt *S) {
1556   VisitStmt(S);
1557   S->setElement(Record.readSubStmt());
1558   S->setCollection(Record.readSubExpr());
1559   S->setBody(Record.readSubStmt());
1560   S->setForLoc(readSourceLocation());
1561   S->setRParenLoc(readSourceLocation());
1562 }
1563 
1564 void ASTStmtReader::VisitObjCAtCatchStmt(ObjCAtCatchStmt *S) {
1565   VisitStmt(S);
1566   S->setCatchBody(Record.readSubStmt());
1567   S->setCatchParamDecl(readDeclAs<VarDecl>());
1568   S->setAtCatchLoc(readSourceLocation());
1569   S->setRParenLoc(readSourceLocation());
1570 }
1571 
1572 void ASTStmtReader::VisitObjCAtFinallyStmt(ObjCAtFinallyStmt *S) {
1573   VisitStmt(S);
1574   S->setFinallyBody(Record.readSubStmt());
1575   S->setAtFinallyLoc(readSourceLocation());
1576 }
1577 
1578 void ASTStmtReader::VisitObjCAutoreleasePoolStmt(ObjCAutoreleasePoolStmt *S) {
1579   VisitStmt(S); // FIXME: no test coverage.
1580   S->setSubStmt(Record.readSubStmt());
1581   S->setAtLoc(readSourceLocation());
1582 }
1583 
1584 void ASTStmtReader::VisitObjCAtTryStmt(ObjCAtTryStmt *S) {
1585   VisitStmt(S);
1586   assert(Record.peekInt() == S->getNumCatchStmts());
1587   Record.skipInts(1);
1588   bool HasFinally = Record.readInt();
1589   S->setTryBody(Record.readSubStmt());
1590   for (unsigned I = 0, N = S->getNumCatchStmts(); I != N; ++I)
1591     S->setCatchStmt(I, cast_or_null<ObjCAtCatchStmt>(Record.readSubStmt()));
1592 
1593   if (HasFinally)
1594     S->setFinallyStmt(Record.readSubStmt());
1595   S->setAtTryLoc(readSourceLocation());
1596 }
1597 
1598 void ASTStmtReader::VisitObjCAtSynchronizedStmt(ObjCAtSynchronizedStmt *S) {
1599   VisitStmt(S); // FIXME: no test coverage.
1600   S->setSynchExpr(Record.readSubStmt());
1601   S->setSynchBody(Record.readSubStmt());
1602   S->setAtSynchronizedLoc(readSourceLocation());
1603 }
1604 
1605 void ASTStmtReader::VisitObjCAtThrowStmt(ObjCAtThrowStmt *S) {
1606   VisitStmt(S); // FIXME: no test coverage.
1607   S->setThrowExpr(Record.readSubStmt());
1608   S->setThrowLoc(readSourceLocation());
1609 }
1610 
1611 void ASTStmtReader::VisitObjCBoolLiteralExpr(ObjCBoolLiteralExpr *E) {
1612   VisitExpr(E);
1613   E->setValue(Record.readInt());
1614   E->setLocation(readSourceLocation());
1615 }
1616 
1617 void ASTStmtReader::VisitObjCAvailabilityCheckExpr(ObjCAvailabilityCheckExpr *E) {
1618   VisitExpr(E);
1619   SourceRange R = Record.readSourceRange();
1620   E->AtLoc = R.getBegin();
1621   E->RParen = R.getEnd();
1622   E->VersionToCheck = Record.readVersionTuple();
1623 }
1624 
1625 //===----------------------------------------------------------------------===//
1626 // C++ Expressions and Statements
1627 //===----------------------------------------------------------------------===//
1628 
1629 void ASTStmtReader::VisitCXXCatchStmt(CXXCatchStmt *S) {
1630   VisitStmt(S);
1631   S->CatchLoc = readSourceLocation();
1632   S->ExceptionDecl = readDeclAs<VarDecl>();
1633   S->HandlerBlock = Record.readSubStmt();
1634 }
1635 
1636 void ASTStmtReader::VisitCXXTryStmt(CXXTryStmt *S) {
1637   VisitStmt(S);
1638   assert(Record.peekInt() == S->getNumHandlers() && "NumStmtFields is wrong ?");
1639   Record.skipInts(1);
1640   S->TryLoc = readSourceLocation();
1641   S->getStmts()[0] = Record.readSubStmt();
1642   for (unsigned i = 0, e = S->getNumHandlers(); i != e; ++i)
1643     S->getStmts()[i + 1] = Record.readSubStmt();
1644 }
1645 
1646 void ASTStmtReader::VisitCXXForRangeStmt(CXXForRangeStmt *S) {
1647   VisitStmt(S);
1648   S->ForLoc = readSourceLocation();
1649   S->CoawaitLoc = readSourceLocation();
1650   S->ColonLoc = readSourceLocation();
1651   S->RParenLoc = readSourceLocation();
1652   S->setInit(Record.readSubStmt());
1653   S->setRangeStmt(Record.readSubStmt());
1654   S->setBeginStmt(Record.readSubStmt());
1655   S->setEndStmt(Record.readSubStmt());
1656   S->setCond(Record.readSubExpr());
1657   S->setInc(Record.readSubExpr());
1658   S->setLoopVarStmt(Record.readSubStmt());
1659   S->setBody(Record.readSubStmt());
1660 }
1661 
1662 void ASTStmtReader::VisitMSDependentExistsStmt(MSDependentExistsStmt *S) {
1663   VisitStmt(S);
1664   S->KeywordLoc = readSourceLocation();
1665   S->IsIfExists = Record.readInt();
1666   S->QualifierLoc = Record.readNestedNameSpecifierLoc();
1667   S->NameInfo = Record.readDeclarationNameInfo();
1668   S->SubStmt = Record.readSubStmt();
1669 }
1670 
1671 void ASTStmtReader::VisitCXXOperatorCallExpr(CXXOperatorCallExpr *E) {
1672   VisitCallExpr(E);
1673   E->CXXOperatorCallExprBits.OperatorKind = Record.readInt();
1674   E->Range = Record.readSourceRange();
1675 }
1676 
1677 void ASTStmtReader::VisitCXXRewrittenBinaryOperator(
1678     CXXRewrittenBinaryOperator *E) {
1679   VisitExpr(E);
1680   E->CXXRewrittenBinaryOperatorBits.IsReversed = Record.readInt();
1681   E->SemanticForm = Record.readSubExpr();
1682 }
1683 
1684 void ASTStmtReader::VisitCXXConstructExpr(CXXConstructExpr *E) {
1685   VisitExpr(E);
1686 
1687   unsigned NumArgs = Record.readInt();
1688   assert((NumArgs == E->getNumArgs()) && "Wrong NumArgs!");
1689 
1690   E->CXXConstructExprBits.Elidable = Record.readInt();
1691   E->CXXConstructExprBits.HadMultipleCandidates = Record.readInt();
1692   E->CXXConstructExprBits.ListInitialization = Record.readInt();
1693   E->CXXConstructExprBits.StdInitListInitialization = Record.readInt();
1694   E->CXXConstructExprBits.ZeroInitialization = Record.readInt();
1695   E->CXXConstructExprBits.ConstructionKind = Record.readInt();
1696   E->CXXConstructExprBits.Loc = readSourceLocation();
1697   E->Constructor = readDeclAs<CXXConstructorDecl>();
1698   E->ParenOrBraceRange = readSourceRange();
1699 
1700   for (unsigned I = 0; I != NumArgs; ++I)
1701     E->setArg(I, Record.readSubExpr());
1702 }
1703 
1704 void ASTStmtReader::VisitCXXInheritedCtorInitExpr(CXXInheritedCtorInitExpr *E) {
1705   VisitExpr(E);
1706   E->Constructor = readDeclAs<CXXConstructorDecl>();
1707   E->Loc = readSourceLocation();
1708   E->ConstructsVirtualBase = Record.readInt();
1709   E->InheritedFromVirtualBase = Record.readInt();
1710 }
1711 
1712 void ASTStmtReader::VisitCXXTemporaryObjectExpr(CXXTemporaryObjectExpr *E) {
1713   VisitCXXConstructExpr(E);
1714   E->TSI = readTypeSourceInfo();
1715 }
1716 
1717 void ASTStmtReader::VisitLambdaExpr(LambdaExpr *E) {
1718   VisitExpr(E);
1719   unsigned NumCaptures = Record.readInt();
1720   (void)NumCaptures;
1721   assert(NumCaptures == E->LambdaExprBits.NumCaptures);
1722   E->IntroducerRange = readSourceRange();
1723   E->LambdaExprBits.CaptureDefault = Record.readInt();
1724   E->CaptureDefaultLoc = readSourceLocation();
1725   E->LambdaExprBits.ExplicitParams = Record.readInt();
1726   E->LambdaExprBits.ExplicitResultType = Record.readInt();
1727   E->ClosingBrace = readSourceLocation();
1728 
1729   // Read capture initializers.
1730   for (LambdaExpr::capture_init_iterator C = E->capture_init_begin(),
1731                                          CEnd = E->capture_init_end();
1732        C != CEnd; ++C)
1733     *C = Record.readSubExpr();
1734 
1735   // The body will be lazily deserialized when needed from the call operator
1736   // declaration.
1737 }
1738 
1739 void
1740 ASTStmtReader::VisitCXXStdInitializerListExpr(CXXStdInitializerListExpr *E) {
1741   VisitExpr(E);
1742   E->SubExpr = Record.readSubExpr();
1743 }
1744 
1745 void ASTStmtReader::VisitCXXNamedCastExpr(CXXNamedCastExpr *E) {
1746   VisitExplicitCastExpr(E);
1747   SourceRange R = readSourceRange();
1748   E->Loc = R.getBegin();
1749   E->RParenLoc = R.getEnd();
1750   R = readSourceRange();
1751   E->AngleBrackets = R;
1752 }
1753 
1754 void ASTStmtReader::VisitCXXStaticCastExpr(CXXStaticCastExpr *E) {
1755   return VisitCXXNamedCastExpr(E);
1756 }
1757 
1758 void ASTStmtReader::VisitCXXDynamicCastExpr(CXXDynamicCastExpr *E) {
1759   return VisitCXXNamedCastExpr(E);
1760 }
1761 
1762 void ASTStmtReader::VisitCXXReinterpretCastExpr(CXXReinterpretCastExpr *E) {
1763   return VisitCXXNamedCastExpr(E);
1764 }
1765 
1766 void ASTStmtReader::VisitCXXAddrspaceCastExpr(CXXAddrspaceCastExpr *E) {
1767   return VisitCXXNamedCastExpr(E);
1768 }
1769 
1770 void ASTStmtReader::VisitCXXConstCastExpr(CXXConstCastExpr *E) {
1771   return VisitCXXNamedCastExpr(E);
1772 }
1773 
1774 void ASTStmtReader::VisitCXXFunctionalCastExpr(CXXFunctionalCastExpr *E) {
1775   VisitExplicitCastExpr(E);
1776   E->setLParenLoc(readSourceLocation());
1777   E->setRParenLoc(readSourceLocation());
1778 }
1779 
1780 void ASTStmtReader::VisitBuiltinBitCastExpr(BuiltinBitCastExpr *E) {
1781   VisitExplicitCastExpr(E);
1782   E->KWLoc = readSourceLocation();
1783   E->RParenLoc = readSourceLocation();
1784 }
1785 
1786 void ASTStmtReader::VisitUserDefinedLiteral(UserDefinedLiteral *E) {
1787   VisitCallExpr(E);
1788   E->UDSuffixLoc = readSourceLocation();
1789 }
1790 
1791 void ASTStmtReader::VisitCXXBoolLiteralExpr(CXXBoolLiteralExpr *E) {
1792   VisitExpr(E);
1793   E->setValue(Record.readInt());
1794   E->setLocation(readSourceLocation());
1795 }
1796 
1797 void ASTStmtReader::VisitCXXNullPtrLiteralExpr(CXXNullPtrLiteralExpr *E) {
1798   VisitExpr(E);
1799   E->setLocation(readSourceLocation());
1800 }
1801 
1802 void ASTStmtReader::VisitCXXTypeidExpr(CXXTypeidExpr *E) {
1803   VisitExpr(E);
1804   E->setSourceRange(readSourceRange());
1805   if (E->isTypeOperand())
1806     E->Operand = readTypeSourceInfo();
1807   else
1808     E->Operand = Record.readSubExpr();
1809 }
1810 
1811 void ASTStmtReader::VisitCXXThisExpr(CXXThisExpr *E) {
1812   VisitExpr(E);
1813   E->setLocation(readSourceLocation());
1814   E->setImplicit(Record.readInt());
1815 }
1816 
1817 void ASTStmtReader::VisitCXXThrowExpr(CXXThrowExpr *E) {
1818   VisitExpr(E);
1819   E->CXXThrowExprBits.ThrowLoc = readSourceLocation();
1820   E->Operand = Record.readSubExpr();
1821   E->CXXThrowExprBits.IsThrownVariableInScope = Record.readInt();
1822 }
1823 
1824 void ASTStmtReader::VisitCXXDefaultArgExpr(CXXDefaultArgExpr *E) {
1825   VisitExpr(E);
1826   E->Param = readDeclAs<ParmVarDecl>();
1827   E->UsedContext = readDeclAs<DeclContext>();
1828   E->CXXDefaultArgExprBits.Loc = readSourceLocation();
1829 }
1830 
1831 void ASTStmtReader::VisitCXXDefaultInitExpr(CXXDefaultInitExpr *E) {
1832   VisitExpr(E);
1833   E->Field = readDeclAs<FieldDecl>();
1834   E->UsedContext = readDeclAs<DeclContext>();
1835   E->CXXDefaultInitExprBits.Loc = readSourceLocation();
1836 }
1837 
1838 void ASTStmtReader::VisitCXXBindTemporaryExpr(CXXBindTemporaryExpr *E) {
1839   VisitExpr(E);
1840   E->setTemporary(Record.readCXXTemporary());
1841   E->setSubExpr(Record.readSubExpr());
1842 }
1843 
1844 void ASTStmtReader::VisitCXXScalarValueInitExpr(CXXScalarValueInitExpr *E) {
1845   VisitExpr(E);
1846   E->TypeInfo = readTypeSourceInfo();
1847   E->CXXScalarValueInitExprBits.RParenLoc = readSourceLocation();
1848 }
1849 
1850 void ASTStmtReader::VisitCXXNewExpr(CXXNewExpr *E) {
1851   VisitExpr(E);
1852 
1853   bool IsArray = Record.readInt();
1854   bool HasInit = Record.readInt();
1855   unsigned NumPlacementArgs = Record.readInt();
1856   bool IsParenTypeId = Record.readInt();
1857 
1858   E->CXXNewExprBits.IsGlobalNew = Record.readInt();
1859   E->CXXNewExprBits.ShouldPassAlignment = Record.readInt();
1860   E->CXXNewExprBits.UsualArrayDeleteWantsSize = Record.readInt();
1861   E->CXXNewExprBits.StoredInitializationStyle = Record.readInt();
1862 
1863   assert((IsArray == E->isArray()) && "Wrong IsArray!");
1864   assert((HasInit == E->hasInitializer()) && "Wrong HasInit!");
1865   assert((NumPlacementArgs == E->getNumPlacementArgs()) &&
1866          "Wrong NumPlacementArgs!");
1867   assert((IsParenTypeId == E->isParenTypeId()) && "Wrong IsParenTypeId!");
1868   (void)IsArray;
1869   (void)HasInit;
1870   (void)NumPlacementArgs;
1871 
1872   E->setOperatorNew(readDeclAs<FunctionDecl>());
1873   E->setOperatorDelete(readDeclAs<FunctionDecl>());
1874   E->AllocatedTypeInfo = readTypeSourceInfo();
1875   if (IsParenTypeId)
1876     E->getTrailingObjects<SourceRange>()[0] = readSourceRange();
1877   E->Range = readSourceRange();
1878   E->DirectInitRange = readSourceRange();
1879 
1880   // Install all the subexpressions.
1881   for (CXXNewExpr::raw_arg_iterator I = E->raw_arg_begin(),
1882                                     N = E->raw_arg_end();
1883        I != N; ++I)
1884     *I = Record.readSubStmt();
1885 }
1886 
1887 void ASTStmtReader::VisitCXXDeleteExpr(CXXDeleteExpr *E) {
1888   VisitExpr(E);
1889   E->CXXDeleteExprBits.GlobalDelete = Record.readInt();
1890   E->CXXDeleteExprBits.ArrayForm = Record.readInt();
1891   E->CXXDeleteExprBits.ArrayFormAsWritten = Record.readInt();
1892   E->CXXDeleteExprBits.UsualArrayDeleteWantsSize = Record.readInt();
1893   E->OperatorDelete = readDeclAs<FunctionDecl>();
1894   E->Argument = Record.readSubExpr();
1895   E->CXXDeleteExprBits.Loc = readSourceLocation();
1896 }
1897 
1898 void ASTStmtReader::VisitCXXPseudoDestructorExpr(CXXPseudoDestructorExpr *E) {
1899   VisitExpr(E);
1900 
1901   E->Base = Record.readSubExpr();
1902   E->IsArrow = Record.readInt();
1903   E->OperatorLoc = readSourceLocation();
1904   E->QualifierLoc = Record.readNestedNameSpecifierLoc();
1905   E->ScopeType = readTypeSourceInfo();
1906   E->ColonColonLoc = readSourceLocation();
1907   E->TildeLoc = readSourceLocation();
1908 
1909   IdentifierInfo *II = Record.readIdentifier();
1910   if (II)
1911     E->setDestroyedType(II, readSourceLocation());
1912   else
1913     E->setDestroyedType(readTypeSourceInfo());
1914 }
1915 
1916 void ASTStmtReader::VisitExprWithCleanups(ExprWithCleanups *E) {
1917   VisitExpr(E);
1918 
1919   unsigned NumObjects = Record.readInt();
1920   assert(NumObjects == E->getNumObjects());
1921   for (unsigned i = 0; i != NumObjects; ++i) {
1922     unsigned CleanupKind = Record.readInt();
1923     ExprWithCleanups::CleanupObject Obj;
1924     if (CleanupKind == COK_Block)
1925       Obj = readDeclAs<BlockDecl>();
1926     else if (CleanupKind == COK_CompoundLiteral)
1927       Obj = cast<CompoundLiteralExpr>(Record.readSubExpr());
1928     else
1929       llvm_unreachable("unexpected cleanup object type");
1930     E->getTrailingObjects<ExprWithCleanups::CleanupObject>()[i] = Obj;
1931   }
1932 
1933   E->ExprWithCleanupsBits.CleanupsHaveSideEffects = Record.readInt();
1934   E->SubExpr = Record.readSubExpr();
1935 }
1936 
1937 void ASTStmtReader::VisitCXXDependentScopeMemberExpr(
1938     CXXDependentScopeMemberExpr *E) {
1939   VisitExpr(E);
1940 
1941   bool HasTemplateKWAndArgsInfo = Record.readInt();
1942   unsigned NumTemplateArgs = Record.readInt();
1943   bool HasFirstQualifierFoundInScope = Record.readInt();
1944 
1945   assert((HasTemplateKWAndArgsInfo == E->hasTemplateKWAndArgsInfo()) &&
1946          "Wrong HasTemplateKWAndArgsInfo!");
1947   assert(
1948       (HasFirstQualifierFoundInScope == E->hasFirstQualifierFoundInScope()) &&
1949       "Wrong HasFirstQualifierFoundInScope!");
1950 
1951   if (HasTemplateKWAndArgsInfo)
1952     ReadTemplateKWAndArgsInfo(
1953         *E->getTrailingObjects<ASTTemplateKWAndArgsInfo>(),
1954         E->getTrailingObjects<TemplateArgumentLoc>(), NumTemplateArgs);
1955 
1956   assert((NumTemplateArgs == E->getNumTemplateArgs()) &&
1957          "Wrong NumTemplateArgs!");
1958 
1959   E->CXXDependentScopeMemberExprBits.IsArrow = Record.readInt();
1960   E->CXXDependentScopeMemberExprBits.OperatorLoc = readSourceLocation();
1961   E->BaseType = Record.readType();
1962   E->QualifierLoc = Record.readNestedNameSpecifierLoc();
1963   E->Base = Record.readSubExpr();
1964 
1965   if (HasFirstQualifierFoundInScope)
1966     *E->getTrailingObjects<NamedDecl *>() = readDeclAs<NamedDecl>();
1967 
1968   E->MemberNameInfo = Record.readDeclarationNameInfo();
1969 }
1970 
1971 void
1972 ASTStmtReader::VisitDependentScopeDeclRefExpr(DependentScopeDeclRefExpr *E) {
1973   VisitExpr(E);
1974 
1975   if (Record.readInt()) // HasTemplateKWAndArgsInfo
1976     ReadTemplateKWAndArgsInfo(
1977         *E->getTrailingObjects<ASTTemplateKWAndArgsInfo>(),
1978         E->getTrailingObjects<TemplateArgumentLoc>(),
1979         /*NumTemplateArgs=*/Record.readInt());
1980 
1981   E->QualifierLoc = Record.readNestedNameSpecifierLoc();
1982   E->NameInfo = Record.readDeclarationNameInfo();
1983 }
1984 
1985 void
1986 ASTStmtReader::VisitCXXUnresolvedConstructExpr(CXXUnresolvedConstructExpr *E) {
1987   VisitExpr(E);
1988   assert(Record.peekInt() == E->arg_size() &&
1989          "Read wrong record during creation ?");
1990   Record.skipInts(1);
1991   for (unsigned I = 0, N = E->arg_size(); I != N; ++I)
1992     E->setArg(I, Record.readSubExpr());
1993   E->TSI = readTypeSourceInfo();
1994   E->setLParenLoc(readSourceLocation());
1995   E->setRParenLoc(readSourceLocation());
1996 }
1997 
1998 void ASTStmtReader::VisitOverloadExpr(OverloadExpr *E) {
1999   VisitExpr(E);
2000 
2001   unsigned NumResults = Record.readInt();
2002   bool HasTemplateKWAndArgsInfo = Record.readInt();
2003   assert((E->getNumDecls() == NumResults) && "Wrong NumResults!");
2004   assert((E->hasTemplateKWAndArgsInfo() == HasTemplateKWAndArgsInfo) &&
2005          "Wrong HasTemplateKWAndArgsInfo!");
2006 
2007   if (HasTemplateKWAndArgsInfo) {
2008     unsigned NumTemplateArgs = Record.readInt();
2009     ReadTemplateKWAndArgsInfo(*E->getTrailingASTTemplateKWAndArgsInfo(),
2010                               E->getTrailingTemplateArgumentLoc(),
2011                               NumTemplateArgs);
2012     assert((E->getNumTemplateArgs() == NumTemplateArgs) &&
2013            "Wrong NumTemplateArgs!");
2014   }
2015 
2016   UnresolvedSet<8> Decls;
2017   for (unsigned I = 0; I != NumResults; ++I) {
2018     auto *D = readDeclAs<NamedDecl>();
2019     auto AS = (AccessSpecifier)Record.readInt();
2020     Decls.addDecl(D, AS);
2021   }
2022 
2023   DeclAccessPair *Results = E->getTrailingResults();
2024   UnresolvedSetIterator Iter = Decls.begin();
2025   for (unsigned I = 0; I != NumResults; ++I) {
2026     Results[I] = (Iter + I).getPair();
2027   }
2028 
2029   E->NameInfo = Record.readDeclarationNameInfo();
2030   E->QualifierLoc = Record.readNestedNameSpecifierLoc();
2031 }
2032 
2033 void ASTStmtReader::VisitUnresolvedMemberExpr(UnresolvedMemberExpr *E) {
2034   VisitOverloadExpr(E);
2035   E->UnresolvedMemberExprBits.IsArrow = Record.readInt();
2036   E->UnresolvedMemberExprBits.HasUnresolvedUsing = Record.readInt();
2037   E->Base = Record.readSubExpr();
2038   E->BaseType = Record.readType();
2039   E->OperatorLoc = readSourceLocation();
2040 }
2041 
2042 void ASTStmtReader::VisitUnresolvedLookupExpr(UnresolvedLookupExpr *E) {
2043   VisitOverloadExpr(E);
2044   E->UnresolvedLookupExprBits.RequiresADL = Record.readInt();
2045   E->UnresolvedLookupExprBits.Overloaded = Record.readInt();
2046   E->NamingClass = readDeclAs<CXXRecordDecl>();
2047 }
2048 
2049 void ASTStmtReader::VisitTypeTraitExpr(TypeTraitExpr *E) {
2050   VisitExpr(E);
2051   E->TypeTraitExprBits.NumArgs = Record.readInt();
2052   E->TypeTraitExprBits.Kind = Record.readInt();
2053   E->TypeTraitExprBits.Value = Record.readInt();
2054   SourceRange Range = readSourceRange();
2055   E->Loc = Range.getBegin();
2056   E->RParenLoc = Range.getEnd();
2057 
2058   auto **Args = E->getTrailingObjects<TypeSourceInfo *>();
2059   for (unsigned I = 0, N = E->getNumArgs(); I != N; ++I)
2060     Args[I] = readTypeSourceInfo();
2061 }
2062 
2063 void ASTStmtReader::VisitArrayTypeTraitExpr(ArrayTypeTraitExpr *E) {
2064   VisitExpr(E);
2065   E->ATT = (ArrayTypeTrait)Record.readInt();
2066   E->Value = (unsigned int)Record.readInt();
2067   SourceRange Range = readSourceRange();
2068   E->Loc = Range.getBegin();
2069   E->RParen = Range.getEnd();
2070   E->QueriedType = readTypeSourceInfo();
2071   E->Dimension = Record.readSubExpr();
2072 }
2073 
2074 void ASTStmtReader::VisitExpressionTraitExpr(ExpressionTraitExpr *E) {
2075   VisitExpr(E);
2076   E->ET = (ExpressionTrait)Record.readInt();
2077   E->Value = (bool)Record.readInt();
2078   SourceRange Range = readSourceRange();
2079   E->QueriedExpression = Record.readSubExpr();
2080   E->Loc = Range.getBegin();
2081   E->RParen = Range.getEnd();
2082 }
2083 
2084 void ASTStmtReader::VisitCXXNoexceptExpr(CXXNoexceptExpr *E) {
2085   VisitExpr(E);
2086   E->CXXNoexceptExprBits.Value = Record.readInt();
2087   E->Range = readSourceRange();
2088   E->Operand = Record.readSubExpr();
2089 }
2090 
2091 void ASTStmtReader::VisitPackExpansionExpr(PackExpansionExpr *E) {
2092   VisitExpr(E);
2093   E->EllipsisLoc = readSourceLocation();
2094   E->NumExpansions = Record.readInt();
2095   E->Pattern = Record.readSubExpr();
2096 }
2097 
2098 void ASTStmtReader::VisitSizeOfPackExpr(SizeOfPackExpr *E) {
2099   VisitExpr(E);
2100   unsigned NumPartialArgs = Record.readInt();
2101   E->OperatorLoc = readSourceLocation();
2102   E->PackLoc = readSourceLocation();
2103   E->RParenLoc = readSourceLocation();
2104   E->Pack = Record.readDeclAs<NamedDecl>();
2105   if (E->isPartiallySubstituted()) {
2106     assert(E->Length == NumPartialArgs);
2107     for (auto *I = E->getTrailingObjects<TemplateArgument>(),
2108               *E = I + NumPartialArgs;
2109          I != E; ++I)
2110       new (I) TemplateArgument(Record.readTemplateArgument());
2111   } else if (!E->isValueDependent()) {
2112     E->Length = Record.readInt();
2113   }
2114 }
2115 
2116 void ASTStmtReader::VisitSubstNonTypeTemplateParmExpr(
2117                                               SubstNonTypeTemplateParmExpr *E) {
2118   VisitExpr(E);
2119   E->Param = readDeclAs<NonTypeTemplateParmDecl>();
2120   E->SubstNonTypeTemplateParmExprBits.NameLoc = readSourceLocation();
2121   E->Replacement = Record.readSubExpr();
2122 }
2123 
2124 void ASTStmtReader::VisitSubstNonTypeTemplateParmPackExpr(
2125                                           SubstNonTypeTemplateParmPackExpr *E) {
2126   VisitExpr(E);
2127   E->Param = readDeclAs<NonTypeTemplateParmDecl>();
2128   TemplateArgument ArgPack = Record.readTemplateArgument();
2129   if (ArgPack.getKind() != TemplateArgument::Pack)
2130     return;
2131 
2132   E->Arguments = ArgPack.pack_begin();
2133   E->NumArguments = ArgPack.pack_size();
2134   E->NameLoc = readSourceLocation();
2135 }
2136 
2137 void ASTStmtReader::VisitFunctionParmPackExpr(FunctionParmPackExpr *E) {
2138   VisitExpr(E);
2139   E->NumParameters = Record.readInt();
2140   E->ParamPack = readDeclAs<ParmVarDecl>();
2141   E->NameLoc = readSourceLocation();
2142   auto **Parms = E->getTrailingObjects<VarDecl *>();
2143   for (unsigned i = 0, n = E->NumParameters; i != n; ++i)
2144     Parms[i] = readDeclAs<VarDecl>();
2145 }
2146 
2147 void ASTStmtReader::VisitMaterializeTemporaryExpr(MaterializeTemporaryExpr *E) {
2148   VisitExpr(E);
2149   bool HasMaterialzedDecl = Record.readInt();
2150   if (HasMaterialzedDecl)
2151     E->State = cast<LifetimeExtendedTemporaryDecl>(Record.readDecl());
2152   else
2153     E->State = Record.readSubExpr();
2154 }
2155 
2156 void ASTStmtReader::VisitCXXFoldExpr(CXXFoldExpr *E) {
2157   VisitExpr(E);
2158   E->LParenLoc = readSourceLocation();
2159   E->EllipsisLoc = readSourceLocation();
2160   E->RParenLoc = readSourceLocation();
2161   E->NumExpansions = Record.readInt();
2162   E->SubExprs[0] = Record.readSubExpr();
2163   E->SubExprs[1] = Record.readSubExpr();
2164   E->SubExprs[2] = Record.readSubExpr();
2165   E->Opcode = (BinaryOperatorKind)Record.readInt();
2166 }
2167 
2168 void ASTStmtReader::VisitOpaqueValueExpr(OpaqueValueExpr *E) {
2169   VisitExpr(E);
2170   E->SourceExpr = Record.readSubExpr();
2171   E->OpaqueValueExprBits.Loc = readSourceLocation();
2172   E->setIsUnique(Record.readInt());
2173 }
2174 
2175 void ASTStmtReader::VisitTypoExpr(TypoExpr *E) {
2176   llvm_unreachable("Cannot read TypoExpr nodes");
2177 }
2178 
2179 void ASTStmtReader::VisitRecoveryExpr(RecoveryExpr *E) {
2180   VisitExpr(E);
2181   unsigned NumArgs = Record.readInt();
2182   E->BeginLoc = readSourceLocation();
2183   E->EndLoc = readSourceLocation();
2184   assert(
2185       (NumArgs == std::distance(E->children().begin(), E->children().end())) &&
2186       "Wrong NumArgs!");
2187   (void)NumArgs;
2188   for (Stmt *&Child : E->children())
2189     Child = Record.readSubStmt();
2190 }
2191 
2192 //===----------------------------------------------------------------------===//
2193 // Microsoft Expressions and Statements
2194 //===----------------------------------------------------------------------===//
2195 void ASTStmtReader::VisitMSPropertyRefExpr(MSPropertyRefExpr *E) {
2196   VisitExpr(E);
2197   E->IsArrow = (Record.readInt() != 0);
2198   E->BaseExpr = Record.readSubExpr();
2199   E->QualifierLoc = Record.readNestedNameSpecifierLoc();
2200   E->MemberLoc = readSourceLocation();
2201   E->TheDecl = readDeclAs<MSPropertyDecl>();
2202 }
2203 
2204 void ASTStmtReader::VisitMSPropertySubscriptExpr(MSPropertySubscriptExpr *E) {
2205   VisitExpr(E);
2206   E->setBase(Record.readSubExpr());
2207   E->setIdx(Record.readSubExpr());
2208   E->setRBracketLoc(readSourceLocation());
2209 }
2210 
2211 void ASTStmtReader::VisitCXXUuidofExpr(CXXUuidofExpr *E) {
2212   VisitExpr(E);
2213   E->setSourceRange(readSourceRange());
2214   E->Guid = readDeclAs<MSGuidDecl>();
2215   if (E->isTypeOperand())
2216     E->Operand = readTypeSourceInfo();
2217   else
2218     E->Operand = Record.readSubExpr();
2219 }
2220 
2221 void ASTStmtReader::VisitSEHLeaveStmt(SEHLeaveStmt *S) {
2222   VisitStmt(S);
2223   S->setLeaveLoc(readSourceLocation());
2224 }
2225 
2226 void ASTStmtReader::VisitSEHExceptStmt(SEHExceptStmt *S) {
2227   VisitStmt(S);
2228   S->Loc = readSourceLocation();
2229   S->Children[SEHExceptStmt::FILTER_EXPR] = Record.readSubStmt();
2230   S->Children[SEHExceptStmt::BLOCK] = Record.readSubStmt();
2231 }
2232 
2233 void ASTStmtReader::VisitSEHFinallyStmt(SEHFinallyStmt *S) {
2234   VisitStmt(S);
2235   S->Loc = readSourceLocation();
2236   S->Block = Record.readSubStmt();
2237 }
2238 
2239 void ASTStmtReader::VisitSEHTryStmt(SEHTryStmt *S) {
2240   VisitStmt(S);
2241   S->IsCXXTry = Record.readInt();
2242   S->TryLoc = readSourceLocation();
2243   S->Children[SEHTryStmt::TRY] = Record.readSubStmt();
2244   S->Children[SEHTryStmt::HANDLER] = Record.readSubStmt();
2245 }
2246 
2247 //===----------------------------------------------------------------------===//
2248 // CUDA Expressions and Statements
2249 //===----------------------------------------------------------------------===//
2250 
2251 void ASTStmtReader::VisitCUDAKernelCallExpr(CUDAKernelCallExpr *E) {
2252   VisitCallExpr(E);
2253   E->setPreArg(CUDAKernelCallExpr::CONFIG, Record.readSubExpr());
2254 }
2255 
2256 //===----------------------------------------------------------------------===//
2257 // OpenCL Expressions and Statements.
2258 //===----------------------------------------------------------------------===//
2259 void ASTStmtReader::VisitAsTypeExpr(AsTypeExpr *E) {
2260   VisitExpr(E);
2261   E->BuiltinLoc = readSourceLocation();
2262   E->RParenLoc = readSourceLocation();
2263   E->SrcExpr = Record.readSubExpr();
2264 }
2265 
2266 //===----------------------------------------------------------------------===//
2267 // OpenMP Directives.
2268 //===----------------------------------------------------------------------===//
2269 
2270 void ASTStmtReader::VisitOMPExecutableDirective(OMPExecutableDirective *E) {
2271   Record.readOMPChildren(E->Data);
2272   E->setLocStart(readSourceLocation());
2273   E->setLocEnd(readSourceLocation());
2274 }
2275 
2276 void ASTStmtReader::VisitOMPLoopDirective(OMPLoopDirective *D) {
2277   VisitStmt(D);
2278   // Field CollapsedNum was read in ReadStmtFromStream.
2279   Record.skipInts(1);
2280   VisitOMPExecutableDirective(D);
2281 }
2282 
2283 void ASTStmtReader::VisitOMPParallelDirective(OMPParallelDirective *D) {
2284   VisitStmt(D);
2285   VisitOMPExecutableDirective(D);
2286   D->setHasCancel(Record.readBool());
2287 }
2288 
2289 void ASTStmtReader::VisitOMPSimdDirective(OMPSimdDirective *D) {
2290   VisitOMPLoopDirective(D);
2291 }
2292 
2293 void ASTStmtReader::VisitOMPForDirective(OMPForDirective *D) {
2294   VisitOMPLoopDirective(D);
2295   D->setHasCancel(Record.readBool());
2296 }
2297 
2298 void ASTStmtReader::VisitOMPForSimdDirective(OMPForSimdDirective *D) {
2299   VisitOMPLoopDirective(D);
2300 }
2301 
2302 void ASTStmtReader::VisitOMPSectionsDirective(OMPSectionsDirective *D) {
2303   VisitStmt(D);
2304   VisitOMPExecutableDirective(D);
2305   D->setHasCancel(Record.readBool());
2306 }
2307 
2308 void ASTStmtReader::VisitOMPSectionDirective(OMPSectionDirective *D) {
2309   VisitStmt(D);
2310   VisitOMPExecutableDirective(D);
2311   D->setHasCancel(Record.readBool());
2312 }
2313 
2314 void ASTStmtReader::VisitOMPSingleDirective(OMPSingleDirective *D) {
2315   VisitStmt(D);
2316   VisitOMPExecutableDirective(D);
2317 }
2318 
2319 void ASTStmtReader::VisitOMPMasterDirective(OMPMasterDirective *D) {
2320   VisitStmt(D);
2321   VisitOMPExecutableDirective(D);
2322 }
2323 
2324 void ASTStmtReader::VisitOMPCriticalDirective(OMPCriticalDirective *D) {
2325   VisitStmt(D);
2326   VisitOMPExecutableDirective(D);
2327   D->DirName = Record.readDeclarationNameInfo();
2328 }
2329 
2330 void ASTStmtReader::VisitOMPParallelForDirective(OMPParallelForDirective *D) {
2331   VisitOMPLoopDirective(D);
2332   D->setHasCancel(Record.readBool());
2333 }
2334 
2335 void ASTStmtReader::VisitOMPParallelForSimdDirective(
2336     OMPParallelForSimdDirective *D) {
2337   VisitOMPLoopDirective(D);
2338 }
2339 
2340 void ASTStmtReader::VisitOMPParallelMasterDirective(
2341     OMPParallelMasterDirective *D) {
2342   VisitStmt(D);
2343   VisitOMPExecutableDirective(D);
2344 }
2345 
2346 void ASTStmtReader::VisitOMPParallelSectionsDirective(
2347     OMPParallelSectionsDirective *D) {
2348   VisitStmt(D);
2349   VisitOMPExecutableDirective(D);
2350   D->setHasCancel(Record.readBool());
2351 }
2352 
2353 void ASTStmtReader::VisitOMPTaskDirective(OMPTaskDirective *D) {
2354   VisitStmt(D);
2355   VisitOMPExecutableDirective(D);
2356   D->setHasCancel(Record.readBool());
2357 }
2358 
2359 void ASTStmtReader::VisitOMPTaskyieldDirective(OMPTaskyieldDirective *D) {
2360   VisitStmt(D);
2361   VisitOMPExecutableDirective(D);
2362 }
2363 
2364 void ASTStmtReader::VisitOMPBarrierDirective(OMPBarrierDirective *D) {
2365   VisitStmt(D);
2366   VisitOMPExecutableDirective(D);
2367 }
2368 
2369 void ASTStmtReader::VisitOMPTaskwaitDirective(OMPTaskwaitDirective *D) {
2370   VisitStmt(D);
2371   VisitOMPExecutableDirective(D);
2372 }
2373 
2374 void ASTStmtReader::VisitOMPTaskgroupDirective(OMPTaskgroupDirective *D) {
2375   VisitStmt(D);
2376   VisitOMPExecutableDirective(D);
2377 }
2378 
2379 void ASTStmtReader::VisitOMPFlushDirective(OMPFlushDirective *D) {
2380   VisitStmt(D);
2381   VisitOMPExecutableDirective(D);
2382 }
2383 
2384 void ASTStmtReader::VisitOMPDepobjDirective(OMPDepobjDirective *D) {
2385   VisitStmt(D);
2386   VisitOMPExecutableDirective(D);
2387 }
2388 
2389 void ASTStmtReader::VisitOMPScanDirective(OMPScanDirective *D) {
2390   VisitStmt(D);
2391   VisitOMPExecutableDirective(D);
2392 }
2393 
2394 void ASTStmtReader::VisitOMPOrderedDirective(OMPOrderedDirective *D) {
2395   VisitStmt(D);
2396   VisitOMPExecutableDirective(D);
2397 }
2398 
2399 void ASTStmtReader::VisitOMPAtomicDirective(OMPAtomicDirective *D) {
2400   VisitStmt(D);
2401   VisitOMPExecutableDirective(D);
2402   D->IsXLHSInRHSPart = Record.readBool();
2403   D->IsPostfixUpdate = Record.readBool();
2404 }
2405 
2406 void ASTStmtReader::VisitOMPTargetDirective(OMPTargetDirective *D) {
2407   VisitStmt(D);
2408   VisitOMPExecutableDirective(D);
2409 }
2410 
2411 void ASTStmtReader::VisitOMPTargetDataDirective(OMPTargetDataDirective *D) {
2412   VisitStmt(D);
2413   VisitOMPExecutableDirective(D);
2414 }
2415 
2416 void ASTStmtReader::VisitOMPTargetEnterDataDirective(
2417     OMPTargetEnterDataDirective *D) {
2418   VisitStmt(D);
2419   VisitOMPExecutableDirective(D);
2420 }
2421 
2422 void ASTStmtReader::VisitOMPTargetExitDataDirective(
2423     OMPTargetExitDataDirective *D) {
2424   VisitStmt(D);
2425   VisitOMPExecutableDirective(D);
2426 }
2427 
2428 void ASTStmtReader::VisitOMPTargetParallelDirective(
2429     OMPTargetParallelDirective *D) {
2430   VisitStmt(D);
2431   VisitOMPExecutableDirective(D);
2432   D->setHasCancel(Record.readBool());
2433 }
2434 
2435 void ASTStmtReader::VisitOMPTargetParallelForDirective(
2436     OMPTargetParallelForDirective *D) {
2437   VisitOMPLoopDirective(D);
2438   D->setHasCancel(Record.readBool());
2439 }
2440 
2441 void ASTStmtReader::VisitOMPTeamsDirective(OMPTeamsDirective *D) {
2442   VisitStmt(D);
2443   VisitOMPExecutableDirective(D);
2444 }
2445 
2446 void ASTStmtReader::VisitOMPCancellationPointDirective(
2447     OMPCancellationPointDirective *D) {
2448   VisitStmt(D);
2449   VisitOMPExecutableDirective(D);
2450   D->setCancelRegion(Record.readEnum<OpenMPDirectiveKind>());
2451 }
2452 
2453 void ASTStmtReader::VisitOMPCancelDirective(OMPCancelDirective *D) {
2454   VisitStmt(D);
2455   VisitOMPExecutableDirective(D);
2456   D->setCancelRegion(Record.readEnum<OpenMPDirectiveKind>());
2457 }
2458 
2459 void ASTStmtReader::VisitOMPTaskLoopDirective(OMPTaskLoopDirective *D) {
2460   VisitOMPLoopDirective(D);
2461   D->setHasCancel(Record.readBool());
2462 }
2463 
2464 void ASTStmtReader::VisitOMPTaskLoopSimdDirective(OMPTaskLoopSimdDirective *D) {
2465   VisitOMPLoopDirective(D);
2466 }
2467 
2468 void ASTStmtReader::VisitOMPMasterTaskLoopDirective(
2469     OMPMasterTaskLoopDirective *D) {
2470   VisitOMPLoopDirective(D);
2471   D->setHasCancel(Record.readBool());
2472 }
2473 
2474 void ASTStmtReader::VisitOMPMasterTaskLoopSimdDirective(
2475     OMPMasterTaskLoopSimdDirective *D) {
2476   VisitOMPLoopDirective(D);
2477 }
2478 
2479 void ASTStmtReader::VisitOMPParallelMasterTaskLoopDirective(
2480     OMPParallelMasterTaskLoopDirective *D) {
2481   VisitOMPLoopDirective(D);
2482   D->setHasCancel(Record.readBool());
2483 }
2484 
2485 void ASTStmtReader::VisitOMPParallelMasterTaskLoopSimdDirective(
2486     OMPParallelMasterTaskLoopSimdDirective *D) {
2487   VisitOMPLoopDirective(D);
2488 }
2489 
2490 void ASTStmtReader::VisitOMPDistributeDirective(OMPDistributeDirective *D) {
2491   VisitOMPLoopDirective(D);
2492 }
2493 
2494 void ASTStmtReader::VisitOMPTargetUpdateDirective(OMPTargetUpdateDirective *D) {
2495   VisitStmt(D);
2496   VisitOMPExecutableDirective(D);
2497 }
2498 
2499 void ASTStmtReader::VisitOMPDistributeParallelForDirective(
2500     OMPDistributeParallelForDirective *D) {
2501   VisitOMPLoopDirective(D);
2502   D->setHasCancel(Record.readBool());
2503 }
2504 
2505 void ASTStmtReader::VisitOMPDistributeParallelForSimdDirective(
2506     OMPDistributeParallelForSimdDirective *D) {
2507   VisitOMPLoopDirective(D);
2508 }
2509 
2510 void ASTStmtReader::VisitOMPDistributeSimdDirective(
2511     OMPDistributeSimdDirective *D) {
2512   VisitOMPLoopDirective(D);
2513 }
2514 
2515 void ASTStmtReader::VisitOMPTargetParallelForSimdDirective(
2516     OMPTargetParallelForSimdDirective *D) {
2517   VisitOMPLoopDirective(D);
2518 }
2519 
2520 void ASTStmtReader::VisitOMPTargetSimdDirective(OMPTargetSimdDirective *D) {
2521   VisitOMPLoopDirective(D);
2522 }
2523 
2524 void ASTStmtReader::VisitOMPTeamsDistributeDirective(
2525     OMPTeamsDistributeDirective *D) {
2526   VisitOMPLoopDirective(D);
2527 }
2528 
2529 void ASTStmtReader::VisitOMPTeamsDistributeSimdDirective(
2530     OMPTeamsDistributeSimdDirective *D) {
2531   VisitOMPLoopDirective(D);
2532 }
2533 
2534 void ASTStmtReader::VisitOMPTeamsDistributeParallelForSimdDirective(
2535     OMPTeamsDistributeParallelForSimdDirective *D) {
2536   VisitOMPLoopDirective(D);
2537 }
2538 
2539 void ASTStmtReader::VisitOMPTeamsDistributeParallelForDirective(
2540     OMPTeamsDistributeParallelForDirective *D) {
2541   VisitOMPLoopDirective(D);
2542   D->setHasCancel(Record.readBool());
2543 }
2544 
2545 void ASTStmtReader::VisitOMPTargetTeamsDirective(OMPTargetTeamsDirective *D) {
2546   VisitStmt(D);
2547   VisitOMPExecutableDirective(D);
2548 }
2549 
2550 void ASTStmtReader::VisitOMPTargetTeamsDistributeDirective(
2551     OMPTargetTeamsDistributeDirective *D) {
2552   VisitOMPLoopDirective(D);
2553 }
2554 
2555 void ASTStmtReader::VisitOMPTargetTeamsDistributeParallelForDirective(
2556     OMPTargetTeamsDistributeParallelForDirective *D) {
2557   VisitOMPLoopDirective(D);
2558   D->setHasCancel(Record.readBool());
2559 }
2560 
2561 void ASTStmtReader::VisitOMPTargetTeamsDistributeParallelForSimdDirective(
2562     OMPTargetTeamsDistributeParallelForSimdDirective *D) {
2563   VisitOMPLoopDirective(D);
2564 }
2565 
2566 void ASTStmtReader::VisitOMPTargetTeamsDistributeSimdDirective(
2567     OMPTargetTeamsDistributeSimdDirective *D) {
2568   VisitOMPLoopDirective(D);
2569 }
2570 
2571 //===----------------------------------------------------------------------===//
2572 // ASTReader Implementation
2573 //===----------------------------------------------------------------------===//
2574 
2575 Stmt *ASTReader::ReadStmt(ModuleFile &F) {
2576   switch (ReadingKind) {
2577   case Read_None:
2578     llvm_unreachable("should not call this when not reading anything");
2579   case Read_Decl:
2580   case Read_Type:
2581     return ReadStmtFromStream(F);
2582   case Read_Stmt:
2583     return ReadSubStmt();
2584   }
2585 
2586   llvm_unreachable("ReadingKind not set ?");
2587 }
2588 
2589 Expr *ASTReader::ReadExpr(ModuleFile &F) {
2590   return cast_or_null<Expr>(ReadStmt(F));
2591 }
2592 
2593 Expr *ASTReader::ReadSubExpr() {
2594   return cast_or_null<Expr>(ReadSubStmt());
2595 }
2596 
2597 // Within the bitstream, expressions are stored in Reverse Polish
2598 // Notation, with each of the subexpressions preceding the
2599 // expression they are stored in. Subexpressions are stored from last to first.
2600 // To evaluate expressions, we continue reading expressions and placing them on
2601 // the stack, with expressions having operands removing those operands from the
2602 // stack. Evaluation terminates when we see a STMT_STOP record, and
2603 // the single remaining expression on the stack is our result.
2604 Stmt *ASTReader::ReadStmtFromStream(ModuleFile &F) {
2605   ReadingKindTracker ReadingKind(Read_Stmt, *this);
2606   llvm::BitstreamCursor &Cursor = F.DeclsCursor;
2607 
2608   // Map of offset to previously deserialized stmt. The offset points
2609   // just after the stmt record.
2610   llvm::DenseMap<uint64_t, Stmt *> StmtEntries;
2611 
2612 #ifndef NDEBUG
2613   unsigned PrevNumStmts = StmtStack.size();
2614 #endif
2615 
2616   ASTRecordReader Record(*this, F);
2617   ASTStmtReader Reader(Record, Cursor);
2618   Stmt::EmptyShell Empty;
2619 
2620   while (true) {
2621     llvm::Expected<llvm::BitstreamEntry> MaybeEntry =
2622         Cursor.advanceSkippingSubblocks();
2623     if (!MaybeEntry) {
2624       Error(toString(MaybeEntry.takeError()));
2625       return nullptr;
2626     }
2627     llvm::BitstreamEntry Entry = MaybeEntry.get();
2628 
2629     switch (Entry.Kind) {
2630     case llvm::BitstreamEntry::SubBlock: // Handled for us already.
2631     case llvm::BitstreamEntry::Error:
2632       Error("malformed block record in AST file");
2633       return nullptr;
2634     case llvm::BitstreamEntry::EndBlock:
2635       goto Done;
2636     case llvm::BitstreamEntry::Record:
2637       // The interesting case.
2638       break;
2639     }
2640 
2641     ASTContext &Context = getContext();
2642     Stmt *S = nullptr;
2643     bool Finished = false;
2644     bool IsStmtReference = false;
2645     Expected<unsigned> MaybeStmtCode = Record.readRecord(Cursor, Entry.ID);
2646     if (!MaybeStmtCode) {
2647       Error(toString(MaybeStmtCode.takeError()));
2648       return nullptr;
2649     }
2650     switch ((StmtCode)MaybeStmtCode.get()) {
2651     case STMT_STOP:
2652       Finished = true;
2653       break;
2654 
2655     case STMT_REF_PTR:
2656       IsStmtReference = true;
2657       assert(StmtEntries.find(Record[0]) != StmtEntries.end() &&
2658              "No stmt was recorded for this offset reference!");
2659       S = StmtEntries[Record.readInt()];
2660       break;
2661 
2662     case STMT_NULL_PTR:
2663       S = nullptr;
2664       break;
2665 
2666     case STMT_NULL:
2667       S = new (Context) NullStmt(Empty);
2668       break;
2669 
2670     case STMT_COMPOUND:
2671       S = CompoundStmt::CreateEmpty(
2672           Context, /*NumStmts=*/Record[ASTStmtReader::NumStmtFields]);
2673       break;
2674 
2675     case STMT_CASE:
2676       S = CaseStmt::CreateEmpty(
2677           Context,
2678           /*CaseStmtIsGNURange*/ Record[ASTStmtReader::NumStmtFields + 3]);
2679       break;
2680 
2681     case STMT_DEFAULT:
2682       S = new (Context) DefaultStmt(Empty);
2683       break;
2684 
2685     case STMT_LABEL:
2686       S = new (Context) LabelStmt(Empty);
2687       break;
2688 
2689     case STMT_ATTRIBUTED:
2690       S = AttributedStmt::CreateEmpty(
2691         Context,
2692         /*NumAttrs*/Record[ASTStmtReader::NumStmtFields]);
2693       break;
2694 
2695     case STMT_IF:
2696       S = IfStmt::CreateEmpty(
2697           Context,
2698           /* HasElse=*/Record[ASTStmtReader::NumStmtFields + 1],
2699           /* HasVar=*/Record[ASTStmtReader::NumStmtFields + 2],
2700           /* HasInit=*/Record[ASTStmtReader::NumStmtFields + 3]);
2701       break;
2702 
2703     case STMT_SWITCH:
2704       S = SwitchStmt::CreateEmpty(
2705           Context,
2706           /* HasInit=*/Record[ASTStmtReader::NumStmtFields],
2707           /* HasVar=*/Record[ASTStmtReader::NumStmtFields + 1]);
2708       break;
2709 
2710     case STMT_WHILE:
2711       S = WhileStmt::CreateEmpty(
2712           Context,
2713           /* HasVar=*/Record[ASTStmtReader::NumStmtFields]);
2714       break;
2715 
2716     case STMT_DO:
2717       S = new (Context) DoStmt(Empty);
2718       break;
2719 
2720     case STMT_FOR:
2721       S = new (Context) ForStmt(Empty);
2722       break;
2723 
2724     case STMT_GOTO:
2725       S = new (Context) GotoStmt(Empty);
2726       break;
2727 
2728     case STMT_INDIRECT_GOTO:
2729       S = new (Context) IndirectGotoStmt(Empty);
2730       break;
2731 
2732     case STMT_CONTINUE:
2733       S = new (Context) ContinueStmt(Empty);
2734       break;
2735 
2736     case STMT_BREAK:
2737       S = new (Context) BreakStmt(Empty);
2738       break;
2739 
2740     case STMT_RETURN:
2741       S = ReturnStmt::CreateEmpty(
2742           Context, /* HasNRVOCandidate=*/Record[ASTStmtReader::NumStmtFields]);
2743       break;
2744 
2745     case STMT_DECL:
2746       S = new (Context) DeclStmt(Empty);
2747       break;
2748 
2749     case STMT_GCCASM:
2750       S = new (Context) GCCAsmStmt(Empty);
2751       break;
2752 
2753     case STMT_MSASM:
2754       S = new (Context) MSAsmStmt(Empty);
2755       break;
2756 
2757     case STMT_CAPTURED:
2758       S = CapturedStmt::CreateDeserialized(
2759           Context, Record[ASTStmtReader::NumStmtFields]);
2760       break;
2761 
2762     case EXPR_CONSTANT:
2763       S = ConstantExpr::CreateEmpty(
2764           Context, static_cast<ConstantExpr::ResultStorageKind>(
2765                        /*StorageKind=*/Record[ASTStmtReader::NumExprFields]));
2766       break;
2767 
2768     case EXPR_PREDEFINED:
2769       S = PredefinedExpr::CreateEmpty(
2770           Context,
2771           /*HasFunctionName*/ Record[ASTStmtReader::NumExprFields]);
2772       break;
2773 
2774     case EXPR_DECL_REF:
2775       S = DeclRefExpr::CreateEmpty(
2776         Context,
2777         /*HasQualifier=*/Record[ASTStmtReader::NumExprFields],
2778         /*HasFoundDecl=*/Record[ASTStmtReader::NumExprFields + 1],
2779         /*HasTemplateKWAndArgsInfo=*/Record[ASTStmtReader::NumExprFields + 2],
2780         /*NumTemplateArgs=*/Record[ASTStmtReader::NumExprFields + 2] ?
2781           Record[ASTStmtReader::NumExprFields + 6] : 0);
2782       break;
2783 
2784     case EXPR_INTEGER_LITERAL:
2785       S = IntegerLiteral::Create(Context, Empty);
2786       break;
2787 
2788     case EXPR_FIXEDPOINT_LITERAL:
2789       S = FixedPointLiteral::Create(Context, Empty);
2790       break;
2791 
2792     case EXPR_FLOATING_LITERAL:
2793       S = FloatingLiteral::Create(Context, Empty);
2794       break;
2795 
2796     case EXPR_IMAGINARY_LITERAL:
2797       S = new (Context) ImaginaryLiteral(Empty);
2798       break;
2799 
2800     case EXPR_STRING_LITERAL:
2801       S = StringLiteral::CreateEmpty(
2802           Context,
2803           /* NumConcatenated=*/Record[ASTStmtReader::NumExprFields],
2804           /* Length=*/Record[ASTStmtReader::NumExprFields + 1],
2805           /* CharByteWidth=*/Record[ASTStmtReader::NumExprFields + 2]);
2806       break;
2807 
2808     case EXPR_CHARACTER_LITERAL:
2809       S = new (Context) CharacterLiteral(Empty);
2810       break;
2811 
2812     case EXPR_PAREN:
2813       S = new (Context) ParenExpr(Empty);
2814       break;
2815 
2816     case EXPR_PAREN_LIST:
2817       S = ParenListExpr::CreateEmpty(
2818           Context,
2819           /* NumExprs=*/Record[ASTStmtReader::NumExprFields]);
2820       break;
2821 
2822     case EXPR_UNARY_OPERATOR:
2823       S = UnaryOperator::CreateEmpty(Context,
2824                                      Record[ASTStmtReader::NumExprFields]);
2825       break;
2826 
2827     case EXPR_OFFSETOF:
2828       S = OffsetOfExpr::CreateEmpty(Context,
2829                                     Record[ASTStmtReader::NumExprFields],
2830                                     Record[ASTStmtReader::NumExprFields + 1]);
2831       break;
2832 
2833     case EXPR_SIZEOF_ALIGN_OF:
2834       S = new (Context) UnaryExprOrTypeTraitExpr(Empty);
2835       break;
2836 
2837     case EXPR_ARRAY_SUBSCRIPT:
2838       S = new (Context) ArraySubscriptExpr(Empty);
2839       break;
2840 
2841     case EXPR_MATRIX_SUBSCRIPT:
2842       S = new (Context) MatrixSubscriptExpr(Empty);
2843       break;
2844 
2845     case EXPR_OMP_ARRAY_SECTION:
2846       S = new (Context) OMPArraySectionExpr(Empty);
2847       break;
2848 
2849     case EXPR_OMP_ARRAY_SHAPING:
2850       S = OMPArrayShapingExpr::CreateEmpty(
2851           Context, Record[ASTStmtReader::NumExprFields]);
2852       break;
2853 
2854     case EXPR_OMP_ITERATOR:
2855       S = OMPIteratorExpr::CreateEmpty(Context,
2856                                        Record[ASTStmtReader::NumExprFields]);
2857       break;
2858 
2859     case EXPR_CALL:
2860       S = CallExpr::CreateEmpty(
2861           Context, /*NumArgs=*/Record[ASTStmtReader::NumExprFields],
2862           /*HasFPFeatures=*/Record[ASTStmtReader::NumExprFields + 1], Empty);
2863       break;
2864 
2865     case EXPR_RECOVERY:
2866       S = RecoveryExpr::CreateEmpty(
2867           Context, /*NumArgs=*/Record[ASTStmtReader::NumExprFields]);
2868       break;
2869 
2870     case EXPR_MEMBER:
2871       S = MemberExpr::CreateEmpty(Context, Record[ASTStmtReader::NumExprFields],
2872                                   Record[ASTStmtReader::NumExprFields + 1],
2873                                   Record[ASTStmtReader::NumExprFields + 2],
2874                                   Record[ASTStmtReader::NumExprFields + 3]);
2875       break;
2876 
2877     case EXPR_BINARY_OPERATOR:
2878       S = BinaryOperator::CreateEmpty(Context,
2879                                       Record[ASTStmtReader::NumExprFields]);
2880       break;
2881 
2882     case EXPR_COMPOUND_ASSIGN_OPERATOR:
2883       S = CompoundAssignOperator::CreateEmpty(
2884           Context, Record[ASTStmtReader::NumExprFields]);
2885       break;
2886 
2887     case EXPR_CONDITIONAL_OPERATOR:
2888       S = new (Context) ConditionalOperator(Empty);
2889       break;
2890 
2891     case EXPR_BINARY_CONDITIONAL_OPERATOR:
2892       S = new (Context) BinaryConditionalOperator(Empty);
2893       break;
2894 
2895     case EXPR_IMPLICIT_CAST:
2896       S = ImplicitCastExpr::CreateEmpty(Context,
2897                        /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
2898       break;
2899 
2900     case EXPR_CSTYLE_CAST:
2901       S = CStyleCastExpr::CreateEmpty(Context,
2902                        /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
2903       break;
2904 
2905     case EXPR_COMPOUND_LITERAL:
2906       S = new (Context) CompoundLiteralExpr(Empty);
2907       break;
2908 
2909     case EXPR_EXT_VECTOR_ELEMENT:
2910       S = new (Context) ExtVectorElementExpr(Empty);
2911       break;
2912 
2913     case EXPR_INIT_LIST:
2914       S = new (Context) InitListExpr(Empty);
2915       break;
2916 
2917     case EXPR_DESIGNATED_INIT:
2918       S = DesignatedInitExpr::CreateEmpty(Context,
2919                                      Record[ASTStmtReader::NumExprFields] - 1);
2920 
2921       break;
2922 
2923     case EXPR_DESIGNATED_INIT_UPDATE:
2924       S = new (Context) DesignatedInitUpdateExpr(Empty);
2925       break;
2926 
2927     case EXPR_IMPLICIT_VALUE_INIT:
2928       S = new (Context) ImplicitValueInitExpr(Empty);
2929       break;
2930 
2931     case EXPR_NO_INIT:
2932       S = new (Context) NoInitExpr(Empty);
2933       break;
2934 
2935     case EXPR_ARRAY_INIT_LOOP:
2936       S = new (Context) ArrayInitLoopExpr(Empty);
2937       break;
2938 
2939     case EXPR_ARRAY_INIT_INDEX:
2940       S = new (Context) ArrayInitIndexExpr(Empty);
2941       break;
2942 
2943     case EXPR_VA_ARG:
2944       S = new (Context) VAArgExpr(Empty);
2945       break;
2946 
2947     case EXPR_SOURCE_LOC:
2948       S = new (Context) SourceLocExpr(Empty);
2949       break;
2950 
2951     case EXPR_ADDR_LABEL:
2952       S = new (Context) AddrLabelExpr(Empty);
2953       break;
2954 
2955     case EXPR_STMT:
2956       S = new (Context) StmtExpr(Empty);
2957       break;
2958 
2959     case EXPR_CHOOSE:
2960       S = new (Context) ChooseExpr(Empty);
2961       break;
2962 
2963     case EXPR_GNU_NULL:
2964       S = new (Context) GNUNullExpr(Empty);
2965       break;
2966 
2967     case EXPR_SHUFFLE_VECTOR:
2968       S = new (Context) ShuffleVectorExpr(Empty);
2969       break;
2970 
2971     case EXPR_CONVERT_VECTOR:
2972       S = new (Context) ConvertVectorExpr(Empty);
2973       break;
2974 
2975     case EXPR_BLOCK:
2976       S = new (Context) BlockExpr(Empty);
2977       break;
2978 
2979     case EXPR_GENERIC_SELECTION:
2980       S = GenericSelectionExpr::CreateEmpty(
2981           Context,
2982           /*NumAssocs=*/Record[ASTStmtReader::NumExprFields]);
2983       break;
2984 
2985     case EXPR_OBJC_STRING_LITERAL:
2986       S = new (Context) ObjCStringLiteral(Empty);
2987       break;
2988 
2989     case EXPR_OBJC_BOXED_EXPRESSION:
2990       S = new (Context) ObjCBoxedExpr(Empty);
2991       break;
2992 
2993     case EXPR_OBJC_ARRAY_LITERAL:
2994       S = ObjCArrayLiteral::CreateEmpty(Context,
2995                                         Record[ASTStmtReader::NumExprFields]);
2996       break;
2997 
2998     case EXPR_OBJC_DICTIONARY_LITERAL:
2999       S = ObjCDictionaryLiteral::CreateEmpty(Context,
3000             Record[ASTStmtReader::NumExprFields],
3001             Record[ASTStmtReader::NumExprFields + 1]);
3002       break;
3003 
3004     case EXPR_OBJC_ENCODE:
3005       S = new (Context) ObjCEncodeExpr(Empty);
3006       break;
3007 
3008     case EXPR_OBJC_SELECTOR_EXPR:
3009       S = new (Context) ObjCSelectorExpr(Empty);
3010       break;
3011 
3012     case EXPR_OBJC_PROTOCOL_EXPR:
3013       S = new (Context) ObjCProtocolExpr(Empty);
3014       break;
3015 
3016     case EXPR_OBJC_IVAR_REF_EXPR:
3017       S = new (Context) ObjCIvarRefExpr(Empty);
3018       break;
3019 
3020     case EXPR_OBJC_PROPERTY_REF_EXPR:
3021       S = new (Context) ObjCPropertyRefExpr(Empty);
3022       break;
3023 
3024     case EXPR_OBJC_SUBSCRIPT_REF_EXPR:
3025       S = new (Context) ObjCSubscriptRefExpr(Empty);
3026       break;
3027 
3028     case EXPR_OBJC_KVC_REF_EXPR:
3029       llvm_unreachable("mismatching AST file");
3030 
3031     case EXPR_OBJC_MESSAGE_EXPR:
3032       S = ObjCMessageExpr::CreateEmpty(Context,
3033                                      Record[ASTStmtReader::NumExprFields],
3034                                      Record[ASTStmtReader::NumExprFields + 1]);
3035       break;
3036 
3037     case EXPR_OBJC_ISA:
3038       S = new (Context) ObjCIsaExpr(Empty);
3039       break;
3040 
3041     case EXPR_OBJC_INDIRECT_COPY_RESTORE:
3042       S = new (Context) ObjCIndirectCopyRestoreExpr(Empty);
3043       break;
3044 
3045     case EXPR_OBJC_BRIDGED_CAST:
3046       S = new (Context) ObjCBridgedCastExpr(Empty);
3047       break;
3048 
3049     case STMT_OBJC_FOR_COLLECTION:
3050       S = new (Context) ObjCForCollectionStmt(Empty);
3051       break;
3052 
3053     case STMT_OBJC_CATCH:
3054       S = new (Context) ObjCAtCatchStmt(Empty);
3055       break;
3056 
3057     case STMT_OBJC_FINALLY:
3058       S = new (Context) ObjCAtFinallyStmt(Empty);
3059       break;
3060 
3061     case STMT_OBJC_AT_TRY:
3062       S = ObjCAtTryStmt::CreateEmpty(Context,
3063                                      Record[ASTStmtReader::NumStmtFields],
3064                                      Record[ASTStmtReader::NumStmtFields + 1]);
3065       break;
3066 
3067     case STMT_OBJC_AT_SYNCHRONIZED:
3068       S = new (Context) ObjCAtSynchronizedStmt(Empty);
3069       break;
3070 
3071     case STMT_OBJC_AT_THROW:
3072       S = new (Context) ObjCAtThrowStmt(Empty);
3073       break;
3074 
3075     case STMT_OBJC_AUTORELEASE_POOL:
3076       S = new (Context) ObjCAutoreleasePoolStmt(Empty);
3077       break;
3078 
3079     case EXPR_OBJC_BOOL_LITERAL:
3080       S = new (Context) ObjCBoolLiteralExpr(Empty);
3081       break;
3082 
3083     case EXPR_OBJC_AVAILABILITY_CHECK:
3084       S = new (Context) ObjCAvailabilityCheckExpr(Empty);
3085       break;
3086 
3087     case STMT_SEH_LEAVE:
3088       S = new (Context) SEHLeaveStmt(Empty);
3089       break;
3090 
3091     case STMT_SEH_EXCEPT:
3092       S = new (Context) SEHExceptStmt(Empty);
3093       break;
3094 
3095     case STMT_SEH_FINALLY:
3096       S = new (Context) SEHFinallyStmt(Empty);
3097       break;
3098 
3099     case STMT_SEH_TRY:
3100       S = new (Context) SEHTryStmt(Empty);
3101       break;
3102 
3103     case STMT_CXX_CATCH:
3104       S = new (Context) CXXCatchStmt(Empty);
3105       break;
3106 
3107     case STMT_CXX_TRY:
3108       S = CXXTryStmt::Create(Context, Empty,
3109              /*numHandlers=*/Record[ASTStmtReader::NumStmtFields]);
3110       break;
3111 
3112     case STMT_CXX_FOR_RANGE:
3113       S = new (Context) CXXForRangeStmt(Empty);
3114       break;
3115 
3116     case STMT_MS_DEPENDENT_EXISTS:
3117       S = new (Context) MSDependentExistsStmt(SourceLocation(), true,
3118                                               NestedNameSpecifierLoc(),
3119                                               DeclarationNameInfo(),
3120                                               nullptr);
3121       break;
3122 
3123     case STMT_OMP_PARALLEL_DIRECTIVE:
3124       S =
3125         OMPParallelDirective::CreateEmpty(Context,
3126                                           Record[ASTStmtReader::NumStmtFields],
3127                                           Empty);
3128       break;
3129 
3130     case STMT_OMP_SIMD_DIRECTIVE: {
3131       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3132       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3133       S = OMPSimdDirective::CreateEmpty(Context, NumClauses,
3134                                         CollapsedNum, Empty);
3135       break;
3136     }
3137 
3138     case STMT_OMP_FOR_DIRECTIVE: {
3139       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3140       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3141       S = OMPForDirective::CreateEmpty(Context, NumClauses, CollapsedNum,
3142                                        Empty);
3143       break;
3144     }
3145 
3146     case STMT_OMP_FOR_SIMD_DIRECTIVE: {
3147       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3148       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3149       S = OMPForSimdDirective::CreateEmpty(Context, NumClauses, CollapsedNum,
3150                                            Empty);
3151       break;
3152     }
3153 
3154     case STMT_OMP_SECTIONS_DIRECTIVE:
3155       S = OMPSectionsDirective::CreateEmpty(
3156           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3157       break;
3158 
3159     case STMT_OMP_SECTION_DIRECTIVE:
3160       S = OMPSectionDirective::CreateEmpty(Context, Empty);
3161       break;
3162 
3163     case STMT_OMP_SINGLE_DIRECTIVE:
3164       S = OMPSingleDirective::CreateEmpty(
3165           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3166       break;
3167 
3168     case STMT_OMP_MASTER_DIRECTIVE:
3169       S = OMPMasterDirective::CreateEmpty(Context, Empty);
3170       break;
3171 
3172     case STMT_OMP_CRITICAL_DIRECTIVE:
3173       S = OMPCriticalDirective::CreateEmpty(
3174           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3175       break;
3176 
3177     case STMT_OMP_PARALLEL_FOR_DIRECTIVE: {
3178       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3179       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3180       S = OMPParallelForDirective::CreateEmpty(Context, NumClauses,
3181                                                CollapsedNum, Empty);
3182       break;
3183     }
3184 
3185     case STMT_OMP_PARALLEL_FOR_SIMD_DIRECTIVE: {
3186       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3187       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3188       S = OMPParallelForSimdDirective::CreateEmpty(Context, NumClauses,
3189                                                    CollapsedNum, Empty);
3190       break;
3191     }
3192 
3193     case STMT_OMP_PARALLEL_MASTER_DIRECTIVE:
3194       S = OMPParallelMasterDirective::CreateEmpty(
3195           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3196       break;
3197 
3198     case STMT_OMP_PARALLEL_SECTIONS_DIRECTIVE:
3199       S = OMPParallelSectionsDirective::CreateEmpty(
3200           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3201       break;
3202 
3203     case STMT_OMP_TASK_DIRECTIVE:
3204       S = OMPTaskDirective::CreateEmpty(
3205           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3206       break;
3207 
3208     case STMT_OMP_TASKYIELD_DIRECTIVE:
3209       S = OMPTaskyieldDirective::CreateEmpty(Context, Empty);
3210       break;
3211 
3212     case STMT_OMP_BARRIER_DIRECTIVE:
3213       S = OMPBarrierDirective::CreateEmpty(Context, Empty);
3214       break;
3215 
3216     case STMT_OMP_TASKWAIT_DIRECTIVE:
3217       S = OMPTaskwaitDirective::CreateEmpty(Context, Empty);
3218       break;
3219 
3220     case STMT_OMP_TASKGROUP_DIRECTIVE:
3221       S = OMPTaskgroupDirective::CreateEmpty(
3222           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3223       break;
3224 
3225     case STMT_OMP_FLUSH_DIRECTIVE:
3226       S = OMPFlushDirective::CreateEmpty(
3227           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3228       break;
3229 
3230     case STMT_OMP_DEPOBJ_DIRECTIVE:
3231       S = OMPDepobjDirective::CreateEmpty(
3232           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3233       break;
3234 
3235     case STMT_OMP_SCAN_DIRECTIVE:
3236       S = OMPScanDirective::CreateEmpty(
3237           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3238       break;
3239 
3240     case STMT_OMP_ORDERED_DIRECTIVE: {
3241       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields];
3242       bool HasAssociatedStmt = Record[ASTStmtReader::NumStmtFields + 2];
3243       S = OMPOrderedDirective::CreateEmpty(Context, NumClauses,
3244                                            !HasAssociatedStmt, Empty);
3245       break;
3246     }
3247 
3248     case STMT_OMP_ATOMIC_DIRECTIVE:
3249       S = OMPAtomicDirective::CreateEmpty(
3250           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3251       break;
3252 
3253     case STMT_OMP_TARGET_DIRECTIVE:
3254       S = OMPTargetDirective::CreateEmpty(
3255           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3256       break;
3257 
3258     case STMT_OMP_TARGET_DATA_DIRECTIVE:
3259       S = OMPTargetDataDirective::CreateEmpty(
3260           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3261       break;
3262 
3263     case STMT_OMP_TARGET_ENTER_DATA_DIRECTIVE:
3264       S = OMPTargetEnterDataDirective::CreateEmpty(
3265           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3266       break;
3267 
3268     case STMT_OMP_TARGET_EXIT_DATA_DIRECTIVE:
3269       S = OMPTargetExitDataDirective::CreateEmpty(
3270           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3271       break;
3272 
3273     case STMT_OMP_TARGET_PARALLEL_DIRECTIVE:
3274       S = OMPTargetParallelDirective::CreateEmpty(
3275           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3276       break;
3277 
3278     case STMT_OMP_TARGET_PARALLEL_FOR_DIRECTIVE: {
3279       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3280       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3281       S = OMPTargetParallelForDirective::CreateEmpty(Context, NumClauses,
3282                                                      CollapsedNum, Empty);
3283       break;
3284     }
3285 
3286     case STMT_OMP_TARGET_UPDATE_DIRECTIVE:
3287       S = OMPTargetUpdateDirective::CreateEmpty(
3288           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3289       break;
3290 
3291     case STMT_OMP_TEAMS_DIRECTIVE:
3292       S = OMPTeamsDirective::CreateEmpty(
3293           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3294       break;
3295 
3296     case STMT_OMP_CANCELLATION_POINT_DIRECTIVE:
3297       S = OMPCancellationPointDirective::CreateEmpty(Context, Empty);
3298       break;
3299 
3300     case STMT_OMP_CANCEL_DIRECTIVE:
3301       S = OMPCancelDirective::CreateEmpty(
3302           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3303       break;
3304 
3305     case STMT_OMP_TASKLOOP_DIRECTIVE: {
3306       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3307       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3308       S = OMPTaskLoopDirective::CreateEmpty(Context, NumClauses, CollapsedNum,
3309                                             Empty);
3310       break;
3311     }
3312 
3313     case STMT_OMP_TASKLOOP_SIMD_DIRECTIVE: {
3314       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3315       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3316       S = OMPTaskLoopSimdDirective::CreateEmpty(Context, NumClauses,
3317                                                 CollapsedNum, Empty);
3318       break;
3319     }
3320 
3321     case STMT_OMP_MASTER_TASKLOOP_DIRECTIVE: {
3322       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3323       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3324       S = OMPMasterTaskLoopDirective::CreateEmpty(Context, NumClauses,
3325                                                   CollapsedNum, Empty);
3326       break;
3327     }
3328 
3329     case STMT_OMP_MASTER_TASKLOOP_SIMD_DIRECTIVE: {
3330       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3331       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3332       S = OMPMasterTaskLoopSimdDirective::CreateEmpty(Context, NumClauses,
3333                                                       CollapsedNum, Empty);
3334       break;
3335     }
3336 
3337     case STMT_OMP_PARALLEL_MASTER_TASKLOOP_DIRECTIVE: {
3338       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3339       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3340       S = OMPParallelMasterTaskLoopDirective::CreateEmpty(Context, NumClauses,
3341                                                           CollapsedNum, Empty);
3342       break;
3343     }
3344 
3345     case STMT_OMP_PARALLEL_MASTER_TASKLOOP_SIMD_DIRECTIVE: {
3346       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3347       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3348       S = OMPParallelMasterTaskLoopSimdDirective::CreateEmpty(
3349           Context, NumClauses, CollapsedNum, Empty);
3350       break;
3351     }
3352 
3353     case STMT_OMP_DISTRIBUTE_DIRECTIVE: {
3354       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3355       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3356       S = OMPDistributeDirective::CreateEmpty(Context, NumClauses, CollapsedNum,
3357                                               Empty);
3358       break;
3359     }
3360 
3361     case STMT_OMP_DISTRIBUTE_PARALLEL_FOR_DIRECTIVE: {
3362       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3363       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3364       S = OMPDistributeParallelForDirective::CreateEmpty(Context, NumClauses,
3365                                                          CollapsedNum, Empty);
3366       break;
3367     }
3368 
3369     case STMT_OMP_DISTRIBUTE_PARALLEL_FOR_SIMD_DIRECTIVE: {
3370       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3371       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3372       S = OMPDistributeParallelForSimdDirective::CreateEmpty(Context, NumClauses,
3373                                                              CollapsedNum,
3374                                                              Empty);
3375       break;
3376     }
3377 
3378     case STMT_OMP_DISTRIBUTE_SIMD_DIRECTIVE: {
3379       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3380       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3381       S = OMPDistributeSimdDirective::CreateEmpty(Context, NumClauses,
3382                                                   CollapsedNum, Empty);
3383       break;
3384     }
3385 
3386     case STMT_OMP_TARGET_PARALLEL_FOR_SIMD_DIRECTIVE: {
3387       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3388       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3389       S = OMPTargetParallelForSimdDirective::CreateEmpty(Context, NumClauses,
3390                                                          CollapsedNum, Empty);
3391       break;
3392     }
3393 
3394     case STMT_OMP_TARGET_SIMD_DIRECTIVE: {
3395       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3396       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3397       S = OMPTargetSimdDirective::CreateEmpty(Context, NumClauses, CollapsedNum,
3398                                               Empty);
3399       break;
3400     }
3401 
3402      case STMT_OMP_TEAMS_DISTRIBUTE_DIRECTIVE: {
3403        unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3404        unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3405        S = OMPTeamsDistributeDirective::CreateEmpty(Context, NumClauses,
3406                                                     CollapsedNum, Empty);
3407        break;
3408     }
3409 
3410     case STMT_OMP_TEAMS_DISTRIBUTE_SIMD_DIRECTIVE: {
3411       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3412       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3413       S = OMPTeamsDistributeSimdDirective::CreateEmpty(Context, NumClauses,
3414                                                        CollapsedNum, Empty);
3415       break;
3416     }
3417 
3418     case STMT_OMP_TEAMS_DISTRIBUTE_PARALLEL_FOR_SIMD_DIRECTIVE: {
3419       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3420       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3421       S = OMPTeamsDistributeParallelForSimdDirective::CreateEmpty(
3422           Context, NumClauses, CollapsedNum, Empty);
3423       break;
3424     }
3425 
3426     case STMT_OMP_TEAMS_DISTRIBUTE_PARALLEL_FOR_DIRECTIVE: {
3427       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3428       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3429       S = OMPTeamsDistributeParallelForDirective::CreateEmpty(
3430           Context, NumClauses, CollapsedNum, Empty);
3431       break;
3432     }
3433 
3434     case STMT_OMP_TARGET_TEAMS_DIRECTIVE:
3435       S = OMPTargetTeamsDirective::CreateEmpty(
3436           Context, Record[ASTStmtReader::NumStmtFields], Empty);
3437       break;
3438 
3439     case STMT_OMP_TARGET_TEAMS_DISTRIBUTE_DIRECTIVE: {
3440       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3441       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3442       S = OMPTargetTeamsDistributeDirective::CreateEmpty(Context, NumClauses,
3443                                                          CollapsedNum, Empty);
3444       break;
3445     }
3446 
3447     case STMT_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_FOR_DIRECTIVE: {
3448       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3449       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3450       S = OMPTargetTeamsDistributeParallelForDirective::CreateEmpty(
3451           Context, NumClauses, CollapsedNum, Empty);
3452       break;
3453     }
3454 
3455     case STMT_OMP_TARGET_TEAMS_DISTRIBUTE_PARALLEL_FOR_SIMD_DIRECTIVE: {
3456       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3457       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3458       S = OMPTargetTeamsDistributeParallelForSimdDirective::CreateEmpty(
3459           Context, NumClauses, CollapsedNum, Empty);
3460       break;
3461     }
3462 
3463     case STMT_OMP_TARGET_TEAMS_DISTRIBUTE_SIMD_DIRECTIVE: {
3464       unsigned CollapsedNum = Record[ASTStmtReader::NumStmtFields];
3465       unsigned NumClauses = Record[ASTStmtReader::NumStmtFields + 1];
3466       S = OMPTargetTeamsDistributeSimdDirective::CreateEmpty(
3467           Context, NumClauses, CollapsedNum, Empty);
3468       break;
3469     }
3470 
3471     case EXPR_CXX_OPERATOR_CALL:
3472       S = CXXOperatorCallExpr::CreateEmpty(
3473           Context, /*NumArgs=*/Record[ASTStmtReader::NumExprFields],
3474           /*HasFPFeatures=*/Record[ASTStmtReader::NumExprFields + 1], Empty);
3475       break;
3476 
3477     case EXPR_CXX_MEMBER_CALL:
3478       S = CXXMemberCallExpr::CreateEmpty(
3479           Context, /*NumArgs=*/Record[ASTStmtReader::NumExprFields],
3480           /*HasFPFeatures=*/Record[ASTStmtReader::NumExprFields + 1], Empty);
3481       break;
3482 
3483     case EXPR_CXX_REWRITTEN_BINARY_OPERATOR:
3484       S = new (Context) CXXRewrittenBinaryOperator(Empty);
3485       break;
3486 
3487     case EXPR_CXX_CONSTRUCT:
3488       S = CXXConstructExpr::CreateEmpty(
3489           Context,
3490           /* NumArgs=*/Record[ASTStmtReader::NumExprFields]);
3491       break;
3492 
3493     case EXPR_CXX_INHERITED_CTOR_INIT:
3494       S = new (Context) CXXInheritedCtorInitExpr(Empty);
3495       break;
3496 
3497     case EXPR_CXX_TEMPORARY_OBJECT:
3498       S = CXXTemporaryObjectExpr::CreateEmpty(
3499           Context,
3500           /* NumArgs=*/Record[ASTStmtReader::NumExprFields]);
3501       break;
3502 
3503     case EXPR_CXX_STATIC_CAST:
3504       S = CXXStaticCastExpr::CreateEmpty(Context,
3505                        /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
3506       break;
3507 
3508     case EXPR_CXX_DYNAMIC_CAST:
3509       S = CXXDynamicCastExpr::CreateEmpty(Context,
3510                        /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
3511       break;
3512 
3513     case EXPR_CXX_REINTERPRET_CAST:
3514       S = CXXReinterpretCastExpr::CreateEmpty(Context,
3515                        /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
3516       break;
3517 
3518     case EXPR_CXX_CONST_CAST:
3519       S = CXXConstCastExpr::CreateEmpty(Context);
3520       break;
3521 
3522     case EXPR_CXX_ADDRSPACE_CAST:
3523       S = CXXAddrspaceCastExpr::CreateEmpty(Context);
3524       break;
3525 
3526     case EXPR_CXX_FUNCTIONAL_CAST:
3527       S = CXXFunctionalCastExpr::CreateEmpty(Context,
3528                        /*PathSize*/ Record[ASTStmtReader::NumExprFields]);
3529       break;
3530 
3531     case EXPR_BUILTIN_BIT_CAST:
3532       assert(Record[ASTStmtReader::NumExprFields] == 0 && "Wrong PathSize!");
3533       S = new (Context) BuiltinBitCastExpr(Empty);
3534       break;
3535 
3536     case EXPR_USER_DEFINED_LITERAL:
3537       S = UserDefinedLiteral::CreateEmpty(
3538           Context, /*NumArgs=*/Record[ASTStmtReader::NumExprFields],
3539           /*HasFPFeatures=*/Record[ASTStmtReader::NumExprFields + 1], Empty);
3540       break;
3541 
3542     case EXPR_CXX_STD_INITIALIZER_LIST:
3543       S = new (Context) CXXStdInitializerListExpr(Empty);
3544       break;
3545 
3546     case EXPR_CXX_BOOL_LITERAL:
3547       S = new (Context) CXXBoolLiteralExpr(Empty);
3548       break;
3549 
3550     case EXPR_CXX_NULL_PTR_LITERAL:
3551       S = new (Context) CXXNullPtrLiteralExpr(Empty);
3552       break;
3553 
3554     case EXPR_CXX_TYPEID_EXPR:
3555       S = new (Context) CXXTypeidExpr(Empty, true);
3556       break;
3557 
3558     case EXPR_CXX_TYPEID_TYPE:
3559       S = new (Context) CXXTypeidExpr(Empty, false);
3560       break;
3561 
3562     case EXPR_CXX_UUIDOF_EXPR:
3563       S = new (Context) CXXUuidofExpr(Empty, true);
3564       break;
3565 
3566     case EXPR_CXX_PROPERTY_REF_EXPR:
3567       S = new (Context) MSPropertyRefExpr(Empty);
3568       break;
3569 
3570     case EXPR_CXX_PROPERTY_SUBSCRIPT_EXPR:
3571       S = new (Context) MSPropertySubscriptExpr(Empty);
3572       break;
3573 
3574     case EXPR_CXX_UUIDOF_TYPE:
3575       S = new (Context) CXXUuidofExpr(Empty, false);
3576       break;
3577 
3578     case EXPR_CXX_THIS:
3579       S = new (Context) CXXThisExpr(Empty);
3580       break;
3581 
3582     case EXPR_CXX_THROW:
3583       S = new (Context) CXXThrowExpr(Empty);
3584       break;
3585 
3586     case EXPR_CXX_DEFAULT_ARG:
3587       S = new (Context) CXXDefaultArgExpr(Empty);
3588       break;
3589 
3590     case EXPR_CXX_DEFAULT_INIT:
3591       S = new (Context) CXXDefaultInitExpr(Empty);
3592       break;
3593 
3594     case EXPR_CXX_BIND_TEMPORARY:
3595       S = new (Context) CXXBindTemporaryExpr(Empty);
3596       break;
3597 
3598     case EXPR_CXX_SCALAR_VALUE_INIT:
3599       S = new (Context) CXXScalarValueInitExpr(Empty);
3600       break;
3601 
3602     case EXPR_CXX_NEW:
3603       S = CXXNewExpr::CreateEmpty(
3604           Context,
3605           /*IsArray=*/Record[ASTStmtReader::NumExprFields],
3606           /*HasInit=*/Record[ASTStmtReader::NumExprFields + 1],
3607           /*NumPlacementArgs=*/Record[ASTStmtReader::NumExprFields + 2],
3608           /*IsParenTypeId=*/Record[ASTStmtReader::NumExprFields + 3]);
3609       break;
3610 
3611     case EXPR_CXX_DELETE:
3612       S = new (Context) CXXDeleteExpr(Empty);
3613       break;
3614 
3615     case EXPR_CXX_PSEUDO_DESTRUCTOR:
3616       S = new (Context) CXXPseudoDestructorExpr(Empty);
3617       break;
3618 
3619     case EXPR_EXPR_WITH_CLEANUPS:
3620       S = ExprWithCleanups::Create(Context, Empty,
3621                                    Record[ASTStmtReader::NumExprFields]);
3622       break;
3623 
3624     case EXPR_CXX_DEPENDENT_SCOPE_MEMBER:
3625       S = CXXDependentScopeMemberExpr::CreateEmpty(
3626           Context,
3627           /*HasTemplateKWAndArgsInfo=*/Record[ASTStmtReader::NumExprFields],
3628           /*NumTemplateArgs=*/Record[ASTStmtReader::NumExprFields + 1],
3629           /*HasFirstQualifierFoundInScope=*/
3630           Record[ASTStmtReader::NumExprFields + 2]);
3631       break;
3632 
3633     case EXPR_CXX_DEPENDENT_SCOPE_DECL_REF:
3634       S = DependentScopeDeclRefExpr::CreateEmpty(Context,
3635          /*HasTemplateKWAndArgsInfo=*/Record[ASTStmtReader::NumExprFields],
3636                   /*NumTemplateArgs=*/Record[ASTStmtReader::NumExprFields]
3637                                    ? Record[ASTStmtReader::NumExprFields + 1]
3638                                    : 0);
3639       break;
3640 
3641     case EXPR_CXX_UNRESOLVED_CONSTRUCT:
3642       S = CXXUnresolvedConstructExpr::CreateEmpty(Context,
3643                               /*NumArgs=*/Record[ASTStmtReader::NumExprFields]);
3644       break;
3645 
3646     case EXPR_CXX_UNRESOLVED_MEMBER:
3647       S = UnresolvedMemberExpr::CreateEmpty(
3648           Context,
3649           /*NumResults=*/Record[ASTStmtReader::NumExprFields],
3650           /*HasTemplateKWAndArgsInfo=*/Record[ASTStmtReader::NumExprFields + 1],
3651           /*NumTemplateArgs=*/
3652           Record[ASTStmtReader::NumExprFields + 1]
3653               ? Record[ASTStmtReader::NumExprFields + 2]
3654               : 0);
3655       break;
3656 
3657     case EXPR_CXX_UNRESOLVED_LOOKUP:
3658       S = UnresolvedLookupExpr::CreateEmpty(
3659           Context,
3660           /*NumResults=*/Record[ASTStmtReader::NumExprFields],
3661           /*HasTemplateKWAndArgsInfo=*/Record[ASTStmtReader::NumExprFields + 1],
3662           /*NumTemplateArgs=*/
3663           Record[ASTStmtReader::NumExprFields + 1]
3664               ? Record[ASTStmtReader::NumExprFields + 2]
3665               : 0);
3666       break;
3667 
3668     case EXPR_TYPE_TRAIT:
3669       S = TypeTraitExpr::CreateDeserialized(Context,
3670             Record[ASTStmtReader::NumExprFields]);
3671       break;
3672 
3673     case EXPR_ARRAY_TYPE_TRAIT:
3674       S = new (Context) ArrayTypeTraitExpr(Empty);
3675       break;
3676 
3677     case EXPR_CXX_EXPRESSION_TRAIT:
3678       S = new (Context) ExpressionTraitExpr(Empty);
3679       break;
3680 
3681     case EXPR_CXX_NOEXCEPT:
3682       S = new (Context) CXXNoexceptExpr(Empty);
3683       break;
3684 
3685     case EXPR_PACK_EXPANSION:
3686       S = new (Context) PackExpansionExpr(Empty);
3687       break;
3688 
3689     case EXPR_SIZEOF_PACK:
3690       S = SizeOfPackExpr::CreateDeserialized(
3691               Context,
3692               /*NumPartialArgs=*/Record[ASTStmtReader::NumExprFields]);
3693       break;
3694 
3695     case EXPR_SUBST_NON_TYPE_TEMPLATE_PARM:
3696       S = new (Context) SubstNonTypeTemplateParmExpr(Empty);
3697       break;
3698 
3699     case EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK:
3700       S = new (Context) SubstNonTypeTemplateParmPackExpr(Empty);
3701       break;
3702 
3703     case EXPR_FUNCTION_PARM_PACK:
3704       S = FunctionParmPackExpr::CreateEmpty(Context,
3705                                           Record[ASTStmtReader::NumExprFields]);
3706       break;
3707 
3708     case EXPR_MATERIALIZE_TEMPORARY:
3709       S = new (Context) MaterializeTemporaryExpr(Empty);
3710       break;
3711 
3712     case EXPR_CXX_FOLD:
3713       S = new (Context) CXXFoldExpr(Empty);
3714       break;
3715 
3716     case EXPR_OPAQUE_VALUE:
3717       S = new (Context) OpaqueValueExpr(Empty);
3718       break;
3719 
3720     case EXPR_CUDA_KERNEL_CALL:
3721       S = CUDAKernelCallExpr::CreateEmpty(
3722           Context, /*NumArgs=*/Record[ASTStmtReader::NumExprFields],
3723           /*HasFPFeatures=*/Record[ASTStmtReader::NumExprFields + 1], Empty);
3724       break;
3725 
3726     case EXPR_ASTYPE:
3727       S = new (Context) AsTypeExpr(Empty);
3728       break;
3729 
3730     case EXPR_PSEUDO_OBJECT: {
3731       unsigned numSemanticExprs = Record[ASTStmtReader::NumExprFields];
3732       S = PseudoObjectExpr::Create(Context, Empty, numSemanticExprs);
3733       break;
3734     }
3735 
3736     case EXPR_ATOMIC:
3737       S = new (Context) AtomicExpr(Empty);
3738       break;
3739 
3740     case EXPR_LAMBDA: {
3741       unsigned NumCaptures = Record[ASTStmtReader::NumExprFields];
3742       S = LambdaExpr::CreateDeserialized(Context, NumCaptures);
3743       break;
3744     }
3745 
3746     case STMT_COROUTINE_BODY: {
3747       unsigned NumParams = Record[ASTStmtReader::NumStmtFields];
3748       S = CoroutineBodyStmt::Create(Context, Empty, NumParams);
3749       break;
3750     }
3751 
3752     case STMT_CORETURN:
3753       S = new (Context) CoreturnStmt(Empty);
3754       break;
3755 
3756     case EXPR_COAWAIT:
3757       S = new (Context) CoawaitExpr(Empty);
3758       break;
3759 
3760     case EXPR_COYIELD:
3761       S = new (Context) CoyieldExpr(Empty);
3762       break;
3763 
3764     case EXPR_DEPENDENT_COAWAIT:
3765       S = new (Context) DependentCoawaitExpr(Empty);
3766       break;
3767 
3768     case EXPR_CONCEPT_SPECIALIZATION: {
3769       unsigned numTemplateArgs = Record[ASTStmtReader::NumExprFields];
3770       S = ConceptSpecializationExpr::Create(Context, Empty, numTemplateArgs);
3771       break;
3772     }
3773 
3774     case EXPR_REQUIRES:
3775       unsigned numLocalParameters = Record[ASTStmtReader::NumExprFields];
3776       unsigned numRequirement = Record[ASTStmtReader::NumExprFields + 1];
3777       S = RequiresExpr::Create(Context, Empty, numLocalParameters,
3778                                numRequirement);
3779       break;
3780     }
3781 
3782     // We hit a STMT_STOP, so we're done with this expression.
3783     if (Finished)
3784       break;
3785 
3786     ++NumStatementsRead;
3787 
3788     if (S && !IsStmtReference) {
3789       Reader.Visit(S);
3790       StmtEntries[Cursor.GetCurrentBitNo()] = S;
3791     }
3792 
3793     assert(Record.getIdx() == Record.size() &&
3794            "Invalid deserialization of statement");
3795     StmtStack.push_back(S);
3796   }
3797 Done:
3798   assert(StmtStack.size() > PrevNumStmts && "Read too many sub-stmts!");
3799   assert(StmtStack.size() == PrevNumStmts + 1 && "Extra expressions on stack!");
3800   return StmtStack.pop_back_val();
3801 }
3802