1 //===--- ASTWriterDecl.cpp - Declaration Serialization --------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file implements serialization for Declarations.
10 //
11 //===----------------------------------------------------------------------===//
12
13 #include "ASTCommon.h"
14 #include "clang/AST/Attr.h"
15 #include "clang/AST/DeclCXX.h"
16 #include "clang/AST/DeclTemplate.h"
17 #include "clang/AST/DeclVisitor.h"
18 #include "clang/AST/Expr.h"
19 #include "clang/AST/OpenMPClause.h"
20 #include "clang/AST/PrettyDeclStackTrace.h"
21 #include "clang/Basic/SourceManager.h"
22 #include "clang/Serialization/ASTReader.h"
23 #include "clang/Serialization/ASTRecordWriter.h"
24 #include "llvm/Bitstream/BitstreamWriter.h"
25 #include "llvm/Support/ErrorHandling.h"
26 using namespace clang;
27 using namespace serialization;
28
29 //===----------------------------------------------------------------------===//
30 // Declaration serialization
31 //===----------------------------------------------------------------------===//
32
33 namespace clang {
34 class ASTDeclWriter : public DeclVisitor<ASTDeclWriter, void> {
35 ASTWriter &Writer;
36 ASTContext &Context;
37 ASTRecordWriter Record;
38
39 serialization::DeclCode Code;
40 unsigned AbbrevToUse;
41
42 public:
ASTDeclWriter(ASTWriter & Writer,ASTContext & Context,ASTWriter::RecordDataImpl & Record)43 ASTDeclWriter(ASTWriter &Writer, ASTContext &Context,
44 ASTWriter::RecordDataImpl &Record)
45 : Writer(Writer), Context(Context), Record(Writer, Record),
46 Code((serialization::DeclCode)0), AbbrevToUse(0) {}
47
Emit(Decl * D)48 uint64_t Emit(Decl *D) {
49 if (!Code)
50 llvm::report_fatal_error(StringRef("unexpected declaration kind '") +
51 D->getDeclKindName() + "'");
52 return Record.Emit(Code, AbbrevToUse);
53 }
54
55 void Visit(Decl *D);
56
57 void VisitDecl(Decl *D);
58 void VisitPragmaCommentDecl(PragmaCommentDecl *D);
59 void VisitPragmaDetectMismatchDecl(PragmaDetectMismatchDecl *D);
60 void VisitTranslationUnitDecl(TranslationUnitDecl *D);
61 void VisitNamedDecl(NamedDecl *D);
62 void VisitLabelDecl(LabelDecl *LD);
63 void VisitNamespaceDecl(NamespaceDecl *D);
64 void VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
65 void VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
66 void VisitTypeDecl(TypeDecl *D);
67 void VisitTypedefNameDecl(TypedefNameDecl *D);
68 void VisitTypedefDecl(TypedefDecl *D);
69 void VisitTypeAliasDecl(TypeAliasDecl *D);
70 void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D);
71 void VisitTagDecl(TagDecl *D);
72 void VisitEnumDecl(EnumDecl *D);
73 void VisitRecordDecl(RecordDecl *D);
74 void VisitCXXRecordDecl(CXXRecordDecl *D);
75 void VisitClassTemplateSpecializationDecl(
76 ClassTemplateSpecializationDecl *D);
77 void VisitClassTemplatePartialSpecializationDecl(
78 ClassTemplatePartialSpecializationDecl *D);
79 void VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl *D);
80 void VisitVarTemplatePartialSpecializationDecl(
81 VarTemplatePartialSpecializationDecl *D);
82 void VisitClassScopeFunctionSpecializationDecl(
83 ClassScopeFunctionSpecializationDecl *D);
84 void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D);
85 void VisitValueDecl(ValueDecl *D);
86 void VisitEnumConstantDecl(EnumConstantDecl *D);
87 void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D);
88 void VisitDeclaratorDecl(DeclaratorDecl *D);
89 void VisitFunctionDecl(FunctionDecl *D);
90 void VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D);
91 void VisitCXXMethodDecl(CXXMethodDecl *D);
92 void VisitCXXConstructorDecl(CXXConstructorDecl *D);
93 void VisitCXXDestructorDecl(CXXDestructorDecl *D);
94 void VisitCXXConversionDecl(CXXConversionDecl *D);
95 void VisitFieldDecl(FieldDecl *D);
96 void VisitMSPropertyDecl(MSPropertyDecl *D);
97 void VisitMSGuidDecl(MSGuidDecl *D);
98 void VisitTemplateParamObjectDecl(TemplateParamObjectDecl *D);
99 void VisitIndirectFieldDecl(IndirectFieldDecl *D);
100 void VisitVarDecl(VarDecl *D);
101 void VisitImplicitParamDecl(ImplicitParamDecl *D);
102 void VisitParmVarDecl(ParmVarDecl *D);
103 void VisitDecompositionDecl(DecompositionDecl *D);
104 void VisitBindingDecl(BindingDecl *D);
105 void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D);
106 void VisitTemplateDecl(TemplateDecl *D);
107 void VisitConceptDecl(ConceptDecl *D);
108 void VisitRequiresExprBodyDecl(RequiresExprBodyDecl *D);
109 void VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D);
110 void VisitClassTemplateDecl(ClassTemplateDecl *D);
111 void VisitVarTemplateDecl(VarTemplateDecl *D);
112 void VisitFunctionTemplateDecl(FunctionTemplateDecl *D);
113 void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
114 void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D);
115 void VisitUsingDecl(UsingDecl *D);
116 void VisitUsingPackDecl(UsingPackDecl *D);
117 void VisitUsingShadowDecl(UsingShadowDecl *D);
118 void VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl *D);
119 void VisitLinkageSpecDecl(LinkageSpecDecl *D);
120 void VisitExportDecl(ExportDecl *D);
121 void VisitFileScopeAsmDecl(FileScopeAsmDecl *D);
122 void VisitImportDecl(ImportDecl *D);
123 void VisitAccessSpecDecl(AccessSpecDecl *D);
124 void VisitFriendDecl(FriendDecl *D);
125 void VisitFriendTemplateDecl(FriendTemplateDecl *D);
126 void VisitStaticAssertDecl(StaticAssertDecl *D);
127 void VisitBlockDecl(BlockDecl *D);
128 void VisitCapturedDecl(CapturedDecl *D);
129 void VisitEmptyDecl(EmptyDecl *D);
130 void VisitLifetimeExtendedTemporaryDecl(LifetimeExtendedTemporaryDecl *D);
131
132 void VisitDeclContext(DeclContext *DC);
133 template <typename T> void VisitRedeclarable(Redeclarable<T> *D);
134
135
136 // FIXME: Put in the same order is DeclNodes.td?
137 void VisitObjCMethodDecl(ObjCMethodDecl *D);
138 void VisitObjCTypeParamDecl(ObjCTypeParamDecl *D);
139 void VisitObjCContainerDecl(ObjCContainerDecl *D);
140 void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
141 void VisitObjCIvarDecl(ObjCIvarDecl *D);
142 void VisitObjCProtocolDecl(ObjCProtocolDecl *D);
143 void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D);
144 void VisitObjCCategoryDecl(ObjCCategoryDecl *D);
145 void VisitObjCImplDecl(ObjCImplDecl *D);
146 void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
147 void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
148 void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
149 void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
150 void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
151 void VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D);
152 void VisitOMPAllocateDecl(OMPAllocateDecl *D);
153 void VisitOMPRequiresDecl(OMPRequiresDecl *D);
154 void VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D);
155 void VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D);
156 void VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D);
157
158 /// Add an Objective-C type parameter list to the given record.
AddObjCTypeParamList(ObjCTypeParamList * typeParams)159 void AddObjCTypeParamList(ObjCTypeParamList *typeParams) {
160 // Empty type parameter list.
161 if (!typeParams) {
162 Record.push_back(0);
163 return;
164 }
165
166 Record.push_back(typeParams->size());
167 for (auto typeParam : *typeParams) {
168 Record.AddDeclRef(typeParam);
169 }
170 Record.AddSourceLocation(typeParams->getLAngleLoc());
171 Record.AddSourceLocation(typeParams->getRAngleLoc());
172 }
173
174 /// Add to the record the first declaration from each module file that
175 /// provides a declaration of D. The intent is to provide a sufficient
176 /// set such that reloading this set will load all current redeclarations.
AddFirstDeclFromEachModule(const Decl * D,bool IncludeLocal)177 void AddFirstDeclFromEachModule(const Decl *D, bool IncludeLocal) {
178 llvm::MapVector<ModuleFile*, const Decl*> Firsts;
179 // FIXME: We can skip entries that we know are implied by others.
180 for (const Decl *R = D->getMostRecentDecl(); R; R = R->getPreviousDecl()) {
181 if (R->isFromASTFile())
182 Firsts[Writer.Chain->getOwningModuleFile(R)] = R;
183 else if (IncludeLocal)
184 Firsts[nullptr] = R;
185 }
186 for (const auto &F : Firsts)
187 Record.AddDeclRef(F.second);
188 }
189
190 /// Get the specialization decl from an entry in the specialization list.
191 template <typename EntryType>
192 typename RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::DeclType *
getSpecializationDecl(EntryType & T)193 getSpecializationDecl(EntryType &T) {
194 return RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::getDecl(&T);
195 }
196
197 /// Get the list of partial specializations from a template's common ptr.
198 template<typename T>
getPartialSpecializations(T * Common)199 decltype(T::PartialSpecializations) &getPartialSpecializations(T *Common) {
200 return Common->PartialSpecializations;
201 }
getPartialSpecializations(FunctionTemplateDecl::Common *)202 ArrayRef<Decl> getPartialSpecializations(FunctionTemplateDecl::Common *) {
203 return None;
204 }
205
206 template<typename DeclTy>
AddTemplateSpecializations(DeclTy * D)207 void AddTemplateSpecializations(DeclTy *D) {
208 auto *Common = D->getCommonPtr();
209
210 // If we have any lazy specializations, and the external AST source is
211 // our chained AST reader, we can just write out the DeclIDs. Otherwise,
212 // we need to resolve them to actual declarations.
213 if (Writer.Chain != Writer.Context->getExternalSource() &&
214 Common->LazySpecializations) {
215 D->LoadLazySpecializations();
216 assert(!Common->LazySpecializations);
217 }
218
219 ArrayRef<DeclID> LazySpecializations;
220 if (auto *LS = Common->LazySpecializations)
221 LazySpecializations = llvm::makeArrayRef(LS + 1, LS[0]);
222
223 // Add a slot to the record for the number of specializations.
224 unsigned I = Record.size();
225 Record.push_back(0);
226
227 // AddFirstDeclFromEachModule might trigger deserialization, invalidating
228 // *Specializations iterators.
229 llvm::SmallVector<const Decl*, 16> Specs;
230 for (auto &Entry : Common->Specializations)
231 Specs.push_back(getSpecializationDecl(Entry));
232 for (auto &Entry : getPartialSpecializations(Common))
233 Specs.push_back(getSpecializationDecl(Entry));
234
235 for (auto *D : Specs) {
236 assert(D->isCanonicalDecl() && "non-canonical decl in set");
237 AddFirstDeclFromEachModule(D, /*IncludeLocal*/true);
238 }
239 Record.append(LazySpecializations.begin(), LazySpecializations.end());
240
241 // Update the size entry we added earlier.
242 Record[I] = Record.size() - I - 1;
243 }
244
245 /// Ensure that this template specialization is associated with the specified
246 /// template on reload.
RegisterTemplateSpecialization(const Decl * Template,const Decl * Specialization)247 void RegisterTemplateSpecialization(const Decl *Template,
248 const Decl *Specialization) {
249 Template = Template->getCanonicalDecl();
250
251 // If the canonical template is local, we'll write out this specialization
252 // when we emit it.
253 // FIXME: We can do the same thing if there is any local declaration of
254 // the template, to avoid emitting an update record.
255 if (!Template->isFromASTFile())
256 return;
257
258 // We only need to associate the first local declaration of the
259 // specialization. The other declarations will get pulled in by it.
260 if (Writer.getFirstLocalDecl(Specialization) != Specialization)
261 return;
262
263 Writer.DeclUpdates[Template].push_back(ASTWriter::DeclUpdate(
264 UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION, Specialization));
265 }
266 };
267 }
268
Visit(Decl * D)269 void ASTDeclWriter::Visit(Decl *D) {
270 DeclVisitor<ASTDeclWriter>::Visit(D);
271
272 // Source locations require array (variable-length) abbreviations. The
273 // abbreviation infrastructure requires that arrays are encoded last, so
274 // we handle it here in the case of those classes derived from DeclaratorDecl
275 if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)) {
276 if (auto *TInfo = DD->getTypeSourceInfo())
277 Record.AddTypeLoc(TInfo->getTypeLoc());
278 }
279
280 // Handle FunctionDecl's body here and write it after all other Stmts/Exprs
281 // have been written. We want it last because we will not read it back when
282 // retrieving it from the AST, we'll just lazily set the offset.
283 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
284 Record.push_back(FD->doesThisDeclarationHaveABody());
285 if (FD->doesThisDeclarationHaveABody())
286 Record.AddFunctionDefinition(FD);
287 }
288
289 // If this declaration is also a DeclContext, write blocks for the
290 // declarations that lexically stored inside its context and those
291 // declarations that are visible from its context.
292 if (DeclContext *DC = dyn_cast<DeclContext>(D))
293 VisitDeclContext(DC);
294 }
295
VisitDecl(Decl * D)296 void ASTDeclWriter::VisitDecl(Decl *D) {
297 Record.AddDeclRef(cast_or_null<Decl>(D->getDeclContext()));
298 if (D->getDeclContext() != D->getLexicalDeclContext())
299 Record.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext()));
300 else
301 Record.push_back(0);
302 Record.push_back(D->isInvalidDecl());
303 Record.push_back(D->hasAttrs());
304 if (D->hasAttrs())
305 Record.AddAttributes(D->getAttrs());
306 Record.push_back(D->isImplicit());
307 Record.push_back(D->isUsed(false));
308 Record.push_back(D->isReferenced());
309 Record.push_back(D->isTopLevelDeclInObjCContainer());
310 Record.push_back(D->getAccess());
311 Record.push_back(D->isModulePrivate());
312 Record.push_back(Writer.getSubmoduleID(D->getOwningModule()));
313
314 // If this declaration injected a name into a context different from its
315 // lexical context, and that context is an imported namespace, we need to
316 // update its visible declarations to include this name.
317 //
318 // This happens when we instantiate a class with a friend declaration or a
319 // function with a local extern declaration, for instance.
320 //
321 // FIXME: Can we handle this in AddedVisibleDecl instead?
322 if (D->isOutOfLine()) {
323 auto *DC = D->getDeclContext();
324 while (auto *NS = dyn_cast<NamespaceDecl>(DC->getRedeclContext())) {
325 if (!NS->isFromASTFile())
326 break;
327 Writer.UpdatedDeclContexts.insert(NS->getPrimaryContext());
328 if (!NS->isInlineNamespace())
329 break;
330 DC = NS->getParent();
331 }
332 }
333 }
334
VisitPragmaCommentDecl(PragmaCommentDecl * D)335 void ASTDeclWriter::VisitPragmaCommentDecl(PragmaCommentDecl *D) {
336 StringRef Arg = D->getArg();
337 Record.push_back(Arg.size());
338 VisitDecl(D);
339 Record.AddSourceLocation(D->getBeginLoc());
340 Record.push_back(D->getCommentKind());
341 Record.AddString(Arg);
342 Code = serialization::DECL_PRAGMA_COMMENT;
343 }
344
VisitPragmaDetectMismatchDecl(PragmaDetectMismatchDecl * D)345 void ASTDeclWriter::VisitPragmaDetectMismatchDecl(
346 PragmaDetectMismatchDecl *D) {
347 StringRef Name = D->getName();
348 StringRef Value = D->getValue();
349 Record.push_back(Name.size() + 1 + Value.size());
350 VisitDecl(D);
351 Record.AddSourceLocation(D->getBeginLoc());
352 Record.AddString(Name);
353 Record.AddString(Value);
354 Code = serialization::DECL_PRAGMA_DETECT_MISMATCH;
355 }
356
VisitTranslationUnitDecl(TranslationUnitDecl * D)357 void ASTDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) {
358 llvm_unreachable("Translation units aren't directly serialized");
359 }
360
VisitNamedDecl(NamedDecl * D)361 void ASTDeclWriter::VisitNamedDecl(NamedDecl *D) {
362 VisitDecl(D);
363 Record.AddDeclarationName(D->getDeclName());
364 Record.push_back(needsAnonymousDeclarationNumber(D)
365 ? Writer.getAnonymousDeclarationNumber(D)
366 : 0);
367 }
368
VisitTypeDecl(TypeDecl * D)369 void ASTDeclWriter::VisitTypeDecl(TypeDecl *D) {
370 VisitNamedDecl(D);
371 Record.AddSourceLocation(D->getBeginLoc());
372 Record.AddTypeRef(QualType(D->getTypeForDecl(), 0));
373 }
374
VisitTypedefNameDecl(TypedefNameDecl * D)375 void ASTDeclWriter::VisitTypedefNameDecl(TypedefNameDecl *D) {
376 VisitRedeclarable(D);
377 VisitTypeDecl(D);
378 Record.AddTypeSourceInfo(D->getTypeSourceInfo());
379 Record.push_back(D->isModed());
380 if (D->isModed())
381 Record.AddTypeRef(D->getUnderlyingType());
382 Record.AddDeclRef(D->getAnonDeclWithTypedefName(false));
383 }
384
VisitTypedefDecl(TypedefDecl * D)385 void ASTDeclWriter::VisitTypedefDecl(TypedefDecl *D) {
386 VisitTypedefNameDecl(D);
387 if (D->getDeclContext() == D->getLexicalDeclContext() &&
388 !D->hasAttrs() &&
389 !D->isImplicit() &&
390 D->getFirstDecl() == D->getMostRecentDecl() &&
391 !D->isInvalidDecl() &&
392 !D->isTopLevelDeclInObjCContainer() &&
393 !D->isModulePrivate() &&
394 !needsAnonymousDeclarationNumber(D) &&
395 D->getDeclName().getNameKind() == DeclarationName::Identifier)
396 AbbrevToUse = Writer.getDeclTypedefAbbrev();
397
398 Code = serialization::DECL_TYPEDEF;
399 }
400
VisitTypeAliasDecl(TypeAliasDecl * D)401 void ASTDeclWriter::VisitTypeAliasDecl(TypeAliasDecl *D) {
402 VisitTypedefNameDecl(D);
403 Record.AddDeclRef(D->getDescribedAliasTemplate());
404 Code = serialization::DECL_TYPEALIAS;
405 }
406
VisitTagDecl(TagDecl * D)407 void ASTDeclWriter::VisitTagDecl(TagDecl *D) {
408 VisitRedeclarable(D);
409 VisitTypeDecl(D);
410 Record.push_back(D->getIdentifierNamespace());
411 Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding
412 if (!isa<CXXRecordDecl>(D))
413 Record.push_back(D->isCompleteDefinition());
414 Record.push_back(D->isEmbeddedInDeclarator());
415 Record.push_back(D->isFreeStanding());
416 Record.push_back(D->isCompleteDefinitionRequired());
417 Record.AddSourceRange(D->getBraceRange());
418
419 if (D->hasExtInfo()) {
420 Record.push_back(1);
421 Record.AddQualifierInfo(*D->getExtInfo());
422 } else if (auto *TD = D->getTypedefNameForAnonDecl()) {
423 Record.push_back(2);
424 Record.AddDeclRef(TD);
425 Record.AddIdentifierRef(TD->getDeclName().getAsIdentifierInfo());
426 } else {
427 Record.push_back(0);
428 }
429 }
430
VisitEnumDecl(EnumDecl * D)431 void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) {
432 VisitTagDecl(D);
433 Record.AddTypeSourceInfo(D->getIntegerTypeSourceInfo());
434 if (!D->getIntegerTypeSourceInfo())
435 Record.AddTypeRef(D->getIntegerType());
436 Record.AddTypeRef(D->getPromotionType());
437 Record.push_back(D->getNumPositiveBits());
438 Record.push_back(D->getNumNegativeBits());
439 Record.push_back(D->isScoped());
440 Record.push_back(D->isScopedUsingClassTag());
441 Record.push_back(D->isFixed());
442 Record.push_back(D->getODRHash());
443
444 if (MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo()) {
445 Record.AddDeclRef(MemberInfo->getInstantiatedFrom());
446 Record.push_back(MemberInfo->getTemplateSpecializationKind());
447 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation());
448 } else {
449 Record.AddDeclRef(nullptr);
450 }
451
452 if (D->getDeclContext() == D->getLexicalDeclContext() &&
453 !D->hasAttrs() &&
454 !D->isImplicit() &&
455 !D->isUsed(false) &&
456 !D->hasExtInfo() &&
457 !D->getTypedefNameForAnonDecl() &&
458 D->getFirstDecl() == D->getMostRecentDecl() &&
459 !D->isInvalidDecl() &&
460 !D->isReferenced() &&
461 !D->isTopLevelDeclInObjCContainer() &&
462 D->getAccess() == AS_none &&
463 !D->isModulePrivate() &&
464 !CXXRecordDecl::classofKind(D->getKind()) &&
465 !D->getIntegerTypeSourceInfo() &&
466 !D->getMemberSpecializationInfo() &&
467 !needsAnonymousDeclarationNumber(D) &&
468 D->getDeclName().getNameKind() == DeclarationName::Identifier)
469 AbbrevToUse = Writer.getDeclEnumAbbrev();
470
471 Code = serialization::DECL_ENUM;
472 }
473
VisitRecordDecl(RecordDecl * D)474 void ASTDeclWriter::VisitRecordDecl(RecordDecl *D) {
475 VisitTagDecl(D);
476 Record.push_back(D->hasFlexibleArrayMember());
477 Record.push_back(D->isAnonymousStructOrUnion());
478 Record.push_back(D->hasObjectMember());
479 Record.push_back(D->hasVolatileMember());
480 Record.push_back(D->isNonTrivialToPrimitiveDefaultInitialize());
481 Record.push_back(D->isNonTrivialToPrimitiveCopy());
482 Record.push_back(D->isNonTrivialToPrimitiveDestroy());
483 Record.push_back(D->hasNonTrivialToPrimitiveDefaultInitializeCUnion());
484 Record.push_back(D->hasNonTrivialToPrimitiveDestructCUnion());
485 Record.push_back(D->hasNonTrivialToPrimitiveCopyCUnion());
486 Record.push_back(D->isParamDestroyedInCallee());
487 Record.push_back(D->getArgPassingRestrictions());
488
489 if (D->getDeclContext() == D->getLexicalDeclContext() &&
490 !D->hasAttrs() &&
491 !D->isImplicit() &&
492 !D->isUsed(false) &&
493 !D->hasExtInfo() &&
494 !D->getTypedefNameForAnonDecl() &&
495 D->getFirstDecl() == D->getMostRecentDecl() &&
496 !D->isInvalidDecl() &&
497 !D->isReferenced() &&
498 !D->isTopLevelDeclInObjCContainer() &&
499 D->getAccess() == AS_none &&
500 !D->isModulePrivate() &&
501 !CXXRecordDecl::classofKind(D->getKind()) &&
502 !needsAnonymousDeclarationNumber(D) &&
503 D->getDeclName().getNameKind() == DeclarationName::Identifier)
504 AbbrevToUse = Writer.getDeclRecordAbbrev();
505
506 Code = serialization::DECL_RECORD;
507 }
508
VisitValueDecl(ValueDecl * D)509 void ASTDeclWriter::VisitValueDecl(ValueDecl *D) {
510 VisitNamedDecl(D);
511 Record.AddTypeRef(D->getType());
512 }
513
VisitEnumConstantDecl(EnumConstantDecl * D)514 void ASTDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) {
515 VisitValueDecl(D);
516 Record.push_back(D->getInitExpr()? 1 : 0);
517 if (D->getInitExpr())
518 Record.AddStmt(D->getInitExpr());
519 Record.AddAPSInt(D->getInitVal());
520
521 Code = serialization::DECL_ENUM_CONSTANT;
522 }
523
VisitDeclaratorDecl(DeclaratorDecl * D)524 void ASTDeclWriter::VisitDeclaratorDecl(DeclaratorDecl *D) {
525 VisitValueDecl(D);
526 Record.AddSourceLocation(D->getInnerLocStart());
527 Record.push_back(D->hasExtInfo());
528 if (D->hasExtInfo()) {
529 DeclaratorDecl::ExtInfo *Info = D->getExtInfo();
530 Record.AddQualifierInfo(*Info);
531 Record.AddStmt(Info->TrailingRequiresClause);
532 }
533 // The location information is deferred until the end of the record.
534 Record.AddTypeRef(D->getTypeSourceInfo() ? D->getTypeSourceInfo()->getType()
535 : QualType());
536 }
537
VisitFunctionDecl(FunctionDecl * D)538 void ASTDeclWriter::VisitFunctionDecl(FunctionDecl *D) {
539 VisitRedeclarable(D);
540 VisitDeclaratorDecl(D);
541 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName());
542 Record.push_back(D->getIdentifierNamespace());
543
544 // FunctionDecl's body is handled last at ASTWriterDecl::Visit,
545 // after everything else is written.
546 Record.push_back(static_cast<int>(D->getStorageClass())); // FIXME: stable encoding
547 Record.push_back(D->isInlineSpecified());
548 Record.push_back(D->isInlined());
549 Record.push_back(D->isVirtualAsWritten());
550 Record.push_back(D->isPure());
551 Record.push_back(D->hasInheritedPrototype());
552 Record.push_back(D->hasWrittenPrototype());
553 Record.push_back(D->isDeletedBit());
554 Record.push_back(D->isTrivial());
555 Record.push_back(D->isTrivialForCall());
556 Record.push_back(D->isDefaulted());
557 Record.push_back(D->isExplicitlyDefaulted());
558 Record.push_back(D->hasImplicitReturnZero());
559 Record.push_back(static_cast<uint64_t>(D->getConstexprKind()));
560 Record.push_back(D->usesSEHTry());
561 Record.push_back(D->hasSkippedBody());
562 Record.push_back(D->isMultiVersion());
563 Record.push_back(D->isLateTemplateParsed());
564 Record.push_back(D->getLinkageInternal());
565 Record.AddSourceLocation(D->getEndLoc());
566
567 Record.push_back(D->getODRHash());
568
569 if (D->isDefaulted()) {
570 if (auto *FDI = D->getDefaultedFunctionInfo()) {
571 Record.push_back(FDI->getUnqualifiedLookups().size());
572 for (DeclAccessPair P : FDI->getUnqualifiedLookups()) {
573 Record.AddDeclRef(P.getDecl());
574 Record.push_back(P.getAccess());
575 }
576 } else {
577 Record.push_back(0);
578 }
579 }
580
581 Record.push_back(D->getTemplatedKind());
582 switch (D->getTemplatedKind()) {
583 case FunctionDecl::TK_NonTemplate:
584 break;
585 case FunctionDecl::TK_FunctionTemplate:
586 Record.AddDeclRef(D->getDescribedFunctionTemplate());
587 break;
588 case FunctionDecl::TK_MemberSpecialization: {
589 MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo();
590 Record.AddDeclRef(MemberInfo->getInstantiatedFrom());
591 Record.push_back(MemberInfo->getTemplateSpecializationKind());
592 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation());
593 break;
594 }
595 case FunctionDecl::TK_FunctionTemplateSpecialization: {
596 FunctionTemplateSpecializationInfo *
597 FTSInfo = D->getTemplateSpecializationInfo();
598
599 RegisterTemplateSpecialization(FTSInfo->getTemplate(), D);
600
601 Record.AddDeclRef(FTSInfo->getTemplate());
602 Record.push_back(FTSInfo->getTemplateSpecializationKind());
603
604 // Template arguments.
605 Record.AddTemplateArgumentList(FTSInfo->TemplateArguments);
606
607 // Template args as written.
608 Record.push_back(FTSInfo->TemplateArgumentsAsWritten != nullptr);
609 if (FTSInfo->TemplateArgumentsAsWritten) {
610 Record.push_back(FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs);
611 for (int i=0, e = FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs;
612 i!=e; ++i)
613 Record.AddTemplateArgumentLoc(
614 (*FTSInfo->TemplateArgumentsAsWritten)[i]);
615 Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->LAngleLoc);
616 Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->RAngleLoc);
617 }
618
619 Record.AddSourceLocation(FTSInfo->getPointOfInstantiation());
620
621 if (MemberSpecializationInfo *MemberInfo =
622 FTSInfo->getMemberSpecializationInfo()) {
623 Record.push_back(1);
624 Record.AddDeclRef(MemberInfo->getInstantiatedFrom());
625 Record.push_back(MemberInfo->getTemplateSpecializationKind());
626 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation());
627 } else {
628 Record.push_back(0);
629 }
630
631 if (D->isCanonicalDecl()) {
632 // Write the template that contains the specializations set. We will
633 // add a FunctionTemplateSpecializationInfo to it when reading.
634 Record.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl());
635 }
636 break;
637 }
638 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: {
639 DependentFunctionTemplateSpecializationInfo *
640 DFTSInfo = D->getDependentSpecializationInfo();
641
642 // Templates.
643 Record.push_back(DFTSInfo->getNumTemplates());
644 for (int i=0, e = DFTSInfo->getNumTemplates(); i != e; ++i)
645 Record.AddDeclRef(DFTSInfo->getTemplate(i));
646
647 // Templates args.
648 Record.push_back(DFTSInfo->getNumTemplateArgs());
649 for (int i=0, e = DFTSInfo->getNumTemplateArgs(); i != e; ++i)
650 Record.AddTemplateArgumentLoc(DFTSInfo->getTemplateArg(i));
651 Record.AddSourceLocation(DFTSInfo->getLAngleLoc());
652 Record.AddSourceLocation(DFTSInfo->getRAngleLoc());
653 break;
654 }
655 }
656
657 Record.push_back(D->param_size());
658 for (auto P : D->parameters())
659 Record.AddDeclRef(P);
660 Code = serialization::DECL_FUNCTION;
661 }
662
addExplicitSpecifier(ExplicitSpecifier ES,ASTRecordWriter & Record)663 static void addExplicitSpecifier(ExplicitSpecifier ES,
664 ASTRecordWriter &Record) {
665 uint64_t Kind = static_cast<uint64_t>(ES.getKind());
666 Kind = Kind << 1 | static_cast<bool>(ES.getExpr());
667 Record.push_back(Kind);
668 if (ES.getExpr()) {
669 Record.AddStmt(ES.getExpr());
670 }
671 }
672
VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl * D)673 void ASTDeclWriter::VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D) {
674 addExplicitSpecifier(D->getExplicitSpecifier(), Record);
675 Record.AddDeclRef(D->Ctor);
676 VisitFunctionDecl(D);
677 Record.push_back(D->isCopyDeductionCandidate());
678 Code = serialization::DECL_CXX_DEDUCTION_GUIDE;
679 }
680
VisitObjCMethodDecl(ObjCMethodDecl * D)681 void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) {
682 VisitNamedDecl(D);
683 // FIXME: convert to LazyStmtPtr?
684 // Unlike C/C++, method bodies will never be in header files.
685 bool HasBodyStuff = D->getBody() != nullptr;
686 Record.push_back(HasBodyStuff);
687 if (HasBodyStuff) {
688 Record.AddStmt(D->getBody());
689 }
690 Record.AddDeclRef(D->getSelfDecl());
691 Record.AddDeclRef(D->getCmdDecl());
692 Record.push_back(D->isInstanceMethod());
693 Record.push_back(D->isVariadic());
694 Record.push_back(D->isPropertyAccessor());
695 Record.push_back(D->isSynthesizedAccessorStub());
696 Record.push_back(D->isDefined());
697 Record.push_back(D->isOverriding());
698 Record.push_back(D->hasSkippedBody());
699
700 Record.push_back(D->isRedeclaration());
701 Record.push_back(D->hasRedeclaration());
702 if (D->hasRedeclaration()) {
703 assert(Context.getObjCMethodRedeclaration(D));
704 Record.AddDeclRef(Context.getObjCMethodRedeclaration(D));
705 }
706
707 // FIXME: stable encoding for @required/@optional
708 Record.push_back(D->getImplementationControl());
709 // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway/nullability
710 Record.push_back(D->getObjCDeclQualifier());
711 Record.push_back(D->hasRelatedResultType());
712 Record.AddTypeRef(D->getReturnType());
713 Record.AddTypeSourceInfo(D->getReturnTypeSourceInfo());
714 Record.AddSourceLocation(D->getEndLoc());
715 Record.push_back(D->param_size());
716 for (const auto *P : D->parameters())
717 Record.AddDeclRef(P);
718
719 Record.push_back(D->getSelLocsKind());
720 unsigned NumStoredSelLocs = D->getNumStoredSelLocs();
721 SourceLocation *SelLocs = D->getStoredSelLocs();
722 Record.push_back(NumStoredSelLocs);
723 for (unsigned i = 0; i != NumStoredSelLocs; ++i)
724 Record.AddSourceLocation(SelLocs[i]);
725
726 Code = serialization::DECL_OBJC_METHOD;
727 }
728
VisitObjCTypeParamDecl(ObjCTypeParamDecl * D)729 void ASTDeclWriter::VisitObjCTypeParamDecl(ObjCTypeParamDecl *D) {
730 VisitTypedefNameDecl(D);
731 Record.push_back(D->Variance);
732 Record.push_back(D->Index);
733 Record.AddSourceLocation(D->VarianceLoc);
734 Record.AddSourceLocation(D->ColonLoc);
735
736 Code = serialization::DECL_OBJC_TYPE_PARAM;
737 }
738
VisitObjCContainerDecl(ObjCContainerDecl * D)739 void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) {
740 VisitNamedDecl(D);
741 Record.AddSourceLocation(D->getAtStartLoc());
742 Record.AddSourceRange(D->getAtEndRange());
743 // Abstract class (no need to define a stable serialization::DECL code).
744 }
745
VisitObjCInterfaceDecl(ObjCInterfaceDecl * D)746 void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) {
747 VisitRedeclarable(D);
748 VisitObjCContainerDecl(D);
749 Record.AddTypeRef(QualType(D->getTypeForDecl(), 0));
750 AddObjCTypeParamList(D->TypeParamList);
751
752 Record.push_back(D->isThisDeclarationADefinition());
753 if (D->isThisDeclarationADefinition()) {
754 // Write the DefinitionData
755 ObjCInterfaceDecl::DefinitionData &Data = D->data();
756
757 Record.AddTypeSourceInfo(D->getSuperClassTInfo());
758 Record.AddSourceLocation(D->getEndOfDefinitionLoc());
759 Record.push_back(Data.HasDesignatedInitializers);
760
761 // Write out the protocols that are directly referenced by the @interface.
762 Record.push_back(Data.ReferencedProtocols.size());
763 for (const auto *P : D->protocols())
764 Record.AddDeclRef(P);
765 for (const auto &PL : D->protocol_locs())
766 Record.AddSourceLocation(PL);
767
768 // Write out the protocols that are transitively referenced.
769 Record.push_back(Data.AllReferencedProtocols.size());
770 for (ObjCList<ObjCProtocolDecl>::iterator
771 P = Data.AllReferencedProtocols.begin(),
772 PEnd = Data.AllReferencedProtocols.end();
773 P != PEnd; ++P)
774 Record.AddDeclRef(*P);
775
776
777 if (ObjCCategoryDecl *Cat = D->getCategoryListRaw()) {
778 // Ensure that we write out the set of categories for this class.
779 Writer.ObjCClassesWithCategories.insert(D);
780
781 // Make sure that the categories get serialized.
782 for (; Cat; Cat = Cat->getNextClassCategoryRaw())
783 (void)Writer.GetDeclRef(Cat);
784 }
785 }
786
787 Code = serialization::DECL_OBJC_INTERFACE;
788 }
789
VisitObjCIvarDecl(ObjCIvarDecl * D)790 void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) {
791 VisitFieldDecl(D);
792 // FIXME: stable encoding for @public/@private/@protected/@package
793 Record.push_back(D->getAccessControl());
794 Record.push_back(D->getSynthesize());
795
796 if (D->getDeclContext() == D->getLexicalDeclContext() &&
797 !D->hasAttrs() &&
798 !D->isImplicit() &&
799 !D->isUsed(false) &&
800 !D->isInvalidDecl() &&
801 !D->isReferenced() &&
802 !D->isModulePrivate() &&
803 !D->getBitWidth() &&
804 !D->hasExtInfo() &&
805 D->getDeclName())
806 AbbrevToUse = Writer.getDeclObjCIvarAbbrev();
807
808 Code = serialization::DECL_OBJC_IVAR;
809 }
810
VisitObjCProtocolDecl(ObjCProtocolDecl * D)811 void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) {
812 VisitRedeclarable(D);
813 VisitObjCContainerDecl(D);
814
815 Record.push_back(D->isThisDeclarationADefinition());
816 if (D->isThisDeclarationADefinition()) {
817 Record.push_back(D->protocol_size());
818 for (const auto *I : D->protocols())
819 Record.AddDeclRef(I);
820 for (const auto &PL : D->protocol_locs())
821 Record.AddSourceLocation(PL);
822 }
823
824 Code = serialization::DECL_OBJC_PROTOCOL;
825 }
826
VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl * D)827 void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) {
828 VisitFieldDecl(D);
829 Code = serialization::DECL_OBJC_AT_DEFS_FIELD;
830 }
831
VisitObjCCategoryDecl(ObjCCategoryDecl * D)832 void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) {
833 VisitObjCContainerDecl(D);
834 Record.AddSourceLocation(D->getCategoryNameLoc());
835 Record.AddSourceLocation(D->getIvarLBraceLoc());
836 Record.AddSourceLocation(D->getIvarRBraceLoc());
837 Record.AddDeclRef(D->getClassInterface());
838 AddObjCTypeParamList(D->TypeParamList);
839 Record.push_back(D->protocol_size());
840 for (const auto *I : D->protocols())
841 Record.AddDeclRef(I);
842 for (const auto &PL : D->protocol_locs())
843 Record.AddSourceLocation(PL);
844 Code = serialization::DECL_OBJC_CATEGORY;
845 }
846
VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl * D)847 void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) {
848 VisitNamedDecl(D);
849 Record.AddDeclRef(D->getClassInterface());
850 Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS;
851 }
852
VisitObjCPropertyDecl(ObjCPropertyDecl * D)853 void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
854 VisitNamedDecl(D);
855 Record.AddSourceLocation(D->getAtLoc());
856 Record.AddSourceLocation(D->getLParenLoc());
857 Record.AddTypeRef(D->getType());
858 Record.AddTypeSourceInfo(D->getTypeSourceInfo());
859 // FIXME: stable encoding
860 Record.push_back((unsigned)D->getPropertyAttributes());
861 Record.push_back((unsigned)D->getPropertyAttributesAsWritten());
862 // FIXME: stable encoding
863 Record.push_back((unsigned)D->getPropertyImplementation());
864 Record.AddDeclarationName(D->getGetterName());
865 Record.AddSourceLocation(D->getGetterNameLoc());
866 Record.AddDeclarationName(D->getSetterName());
867 Record.AddSourceLocation(D->getSetterNameLoc());
868 Record.AddDeclRef(D->getGetterMethodDecl());
869 Record.AddDeclRef(D->getSetterMethodDecl());
870 Record.AddDeclRef(D->getPropertyIvarDecl());
871 Code = serialization::DECL_OBJC_PROPERTY;
872 }
873
VisitObjCImplDecl(ObjCImplDecl * D)874 void ASTDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) {
875 VisitObjCContainerDecl(D);
876 Record.AddDeclRef(D->getClassInterface());
877 // Abstract class (no need to define a stable serialization::DECL code).
878 }
879
VisitObjCCategoryImplDecl(ObjCCategoryImplDecl * D)880 void ASTDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
881 VisitObjCImplDecl(D);
882 Record.AddSourceLocation(D->getCategoryNameLoc());
883 Code = serialization::DECL_OBJC_CATEGORY_IMPL;
884 }
885
VisitObjCImplementationDecl(ObjCImplementationDecl * D)886 void ASTDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
887 VisitObjCImplDecl(D);
888 Record.AddDeclRef(D->getSuperClass());
889 Record.AddSourceLocation(D->getSuperClassLoc());
890 Record.AddSourceLocation(D->getIvarLBraceLoc());
891 Record.AddSourceLocation(D->getIvarRBraceLoc());
892 Record.push_back(D->hasNonZeroConstructors());
893 Record.push_back(D->hasDestructors());
894 Record.push_back(D->NumIvarInitializers);
895 if (D->NumIvarInitializers)
896 Record.AddCXXCtorInitializers(
897 llvm::makeArrayRef(D->init_begin(), D->init_end()));
898 Code = serialization::DECL_OBJC_IMPLEMENTATION;
899 }
900
VisitObjCPropertyImplDecl(ObjCPropertyImplDecl * D)901 void ASTDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
902 VisitDecl(D);
903 Record.AddSourceLocation(D->getBeginLoc());
904 Record.AddDeclRef(D->getPropertyDecl());
905 Record.AddDeclRef(D->getPropertyIvarDecl());
906 Record.AddSourceLocation(D->getPropertyIvarDeclLoc());
907 Record.AddDeclRef(D->getGetterMethodDecl());
908 Record.AddDeclRef(D->getSetterMethodDecl());
909 Record.AddStmt(D->getGetterCXXConstructor());
910 Record.AddStmt(D->getSetterCXXAssignment());
911 Code = serialization::DECL_OBJC_PROPERTY_IMPL;
912 }
913
VisitFieldDecl(FieldDecl * D)914 void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) {
915 VisitDeclaratorDecl(D);
916 Record.push_back(D->isMutable());
917
918 FieldDecl::InitStorageKind ISK = D->InitStorage.getInt();
919 Record.push_back(ISK);
920 if (ISK == FieldDecl::ISK_CapturedVLAType)
921 Record.AddTypeRef(QualType(D->getCapturedVLAType(), 0));
922 else if (ISK)
923 Record.AddStmt(D->getInClassInitializer());
924
925 Record.AddStmt(D->getBitWidth());
926
927 if (!D->getDeclName())
928 Record.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D));
929
930 if (D->getDeclContext() == D->getLexicalDeclContext() &&
931 !D->hasAttrs() &&
932 !D->isImplicit() &&
933 !D->isUsed(false) &&
934 !D->isInvalidDecl() &&
935 !D->isReferenced() &&
936 !D->isTopLevelDeclInObjCContainer() &&
937 !D->isModulePrivate() &&
938 !D->getBitWidth() &&
939 !D->hasInClassInitializer() &&
940 !D->hasCapturedVLAType() &&
941 !D->hasExtInfo() &&
942 !ObjCIvarDecl::classofKind(D->getKind()) &&
943 !ObjCAtDefsFieldDecl::classofKind(D->getKind()) &&
944 D->getDeclName())
945 AbbrevToUse = Writer.getDeclFieldAbbrev();
946
947 Code = serialization::DECL_FIELD;
948 }
949
VisitMSPropertyDecl(MSPropertyDecl * D)950 void ASTDeclWriter::VisitMSPropertyDecl(MSPropertyDecl *D) {
951 VisitDeclaratorDecl(D);
952 Record.AddIdentifierRef(D->getGetterId());
953 Record.AddIdentifierRef(D->getSetterId());
954 Code = serialization::DECL_MS_PROPERTY;
955 }
956
VisitMSGuidDecl(MSGuidDecl * D)957 void ASTDeclWriter::VisitMSGuidDecl(MSGuidDecl *D) {
958 VisitValueDecl(D);
959 MSGuidDecl::Parts Parts = D->getParts();
960 Record.push_back(Parts.Part1);
961 Record.push_back(Parts.Part2);
962 Record.push_back(Parts.Part3);
963 for (auto C : Parts.Part4And5)
964 Record.push_back(C);
965 Code = serialization::DECL_MS_GUID;
966 }
967
VisitTemplateParamObjectDecl(TemplateParamObjectDecl * D)968 void ASTDeclWriter::VisitTemplateParamObjectDecl(TemplateParamObjectDecl *D) {
969 VisitValueDecl(D);
970 Record.AddAPValue(D->getValue());
971 Code = serialization::DECL_TEMPLATE_PARAM_OBJECT;
972 }
973
VisitIndirectFieldDecl(IndirectFieldDecl * D)974 void ASTDeclWriter::VisitIndirectFieldDecl(IndirectFieldDecl *D) {
975 VisitValueDecl(D);
976 Record.push_back(D->getChainingSize());
977
978 for (const auto *P : D->chain())
979 Record.AddDeclRef(P);
980 Code = serialization::DECL_INDIRECTFIELD;
981 }
982
VisitVarDecl(VarDecl * D)983 void ASTDeclWriter::VisitVarDecl(VarDecl *D) {
984 VisitRedeclarable(D);
985 VisitDeclaratorDecl(D);
986 Record.push_back(D->getStorageClass());
987 Record.push_back(D->getTSCSpec());
988 Record.push_back(D->getInitStyle());
989 Record.push_back(D->isARCPseudoStrong());
990 if (!isa<ParmVarDecl>(D)) {
991 Record.push_back(D->isThisDeclarationADemotedDefinition());
992 Record.push_back(D->isExceptionVariable());
993 Record.push_back(D->isNRVOVariable());
994 Record.push_back(D->isCXXForRangeDecl());
995 Record.push_back(D->isObjCForDecl());
996 Record.push_back(D->isInline());
997 Record.push_back(D->isInlineSpecified());
998 Record.push_back(D->isConstexpr());
999 Record.push_back(D->isInitCapture());
1000 Record.push_back(D->isPreviousDeclInSameBlockScope());
1001 if (const auto *IPD = dyn_cast<ImplicitParamDecl>(D))
1002 Record.push_back(static_cast<unsigned>(IPD->getParameterKind()));
1003 else
1004 Record.push_back(0);
1005 Record.push_back(D->isEscapingByref());
1006 }
1007 Record.push_back(D->getLinkageInternal());
1008
1009 Record.AddVarDeclInit(D);
1010
1011 if (D->hasAttr<BlocksAttr>() && D->getType()->getAsCXXRecordDecl()) {
1012 BlockVarCopyInit Init = Writer.Context->getBlockVarCopyInit(D);
1013 Record.AddStmt(Init.getCopyExpr());
1014 if (Init.getCopyExpr())
1015 Record.push_back(Init.canThrow());
1016 }
1017
1018 if (D->getStorageDuration() == SD_Static) {
1019 bool ModulesCodegen = false;
1020 if (Writer.WritingModule &&
1021 !D->getDescribedVarTemplate() && !D->getMemberSpecializationInfo() &&
1022 !isa<VarTemplateSpecializationDecl>(D)) {
1023 // When building a C++ Modules TS module interface unit, a strong
1024 // definition in the module interface is provided by the compilation of
1025 // that module interface unit, not by its users. (Inline variables are
1026 // still emitted in module users.)
1027 ModulesCodegen =
1028 (Writer.WritingModule->Kind == Module::ModuleInterfaceUnit ||
1029 (D->hasAttr<DLLExportAttr>() &&
1030 Writer.Context->getLangOpts().BuildingPCHWithObjectFile)) &&
1031 Writer.Context->GetGVALinkageForVariable(D) == GVA_StrongExternal;
1032 }
1033 Record.push_back(ModulesCodegen);
1034 if (ModulesCodegen)
1035 Writer.ModularCodegenDecls.push_back(Writer.GetDeclRef(D));
1036 }
1037
1038 enum {
1039 VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization
1040 };
1041 if (VarTemplateDecl *TemplD = D->getDescribedVarTemplate()) {
1042 Record.push_back(VarTemplate);
1043 Record.AddDeclRef(TemplD);
1044 } else if (MemberSpecializationInfo *SpecInfo
1045 = D->getMemberSpecializationInfo()) {
1046 Record.push_back(StaticDataMemberSpecialization);
1047 Record.AddDeclRef(SpecInfo->getInstantiatedFrom());
1048 Record.push_back(SpecInfo->getTemplateSpecializationKind());
1049 Record.AddSourceLocation(SpecInfo->getPointOfInstantiation());
1050 } else {
1051 Record.push_back(VarNotTemplate);
1052 }
1053
1054 if (D->getDeclContext() == D->getLexicalDeclContext() &&
1055 !D->hasAttrs() &&
1056 !D->isImplicit() &&
1057 !D->isUsed(false) &&
1058 !D->isInvalidDecl() &&
1059 !D->isReferenced() &&
1060 !D->isTopLevelDeclInObjCContainer() &&
1061 D->getAccess() == AS_none &&
1062 !D->isModulePrivate() &&
1063 !needsAnonymousDeclarationNumber(D) &&
1064 D->getDeclName().getNameKind() == DeclarationName::Identifier &&
1065 !D->hasExtInfo() &&
1066 D->getFirstDecl() == D->getMostRecentDecl() &&
1067 D->getKind() == Decl::Var &&
1068 !D->isInline() &&
1069 !D->isConstexpr() &&
1070 !D->isInitCapture() &&
1071 !D->isPreviousDeclInSameBlockScope() &&
1072 !(D->hasAttr<BlocksAttr>() && D->getType()->getAsCXXRecordDecl()) &&
1073 !D->isEscapingByref() &&
1074 D->getStorageDuration() != SD_Static &&
1075 !D->getMemberSpecializationInfo())
1076 AbbrevToUse = Writer.getDeclVarAbbrev();
1077
1078 Code = serialization::DECL_VAR;
1079 }
1080
VisitImplicitParamDecl(ImplicitParamDecl * D)1081 void ASTDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) {
1082 VisitVarDecl(D);
1083 Code = serialization::DECL_IMPLICIT_PARAM;
1084 }
1085
VisitParmVarDecl(ParmVarDecl * D)1086 void ASTDeclWriter::VisitParmVarDecl(ParmVarDecl *D) {
1087 VisitVarDecl(D);
1088 Record.push_back(D->isObjCMethodParameter());
1089 Record.push_back(D->getFunctionScopeDepth());
1090 Record.push_back(D->getFunctionScopeIndex());
1091 Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding
1092 Record.push_back(D->isKNRPromoted());
1093 Record.push_back(D->hasInheritedDefaultArg());
1094 Record.push_back(D->hasUninstantiatedDefaultArg());
1095 if (D->hasUninstantiatedDefaultArg())
1096 Record.AddStmt(D->getUninstantiatedDefaultArg());
1097 Code = serialization::DECL_PARM_VAR;
1098
1099 // If the assumptions about the DECL_PARM_VAR abbrev are true, use it. Here
1100 // we dynamically check for the properties that we optimize for, but don't
1101 // know are true of all PARM_VAR_DECLs.
1102 if (D->getDeclContext() == D->getLexicalDeclContext() &&
1103 !D->hasAttrs() &&
1104 !D->hasExtInfo() &&
1105 !D->isImplicit() &&
1106 !D->isUsed(false) &&
1107 !D->isInvalidDecl() &&
1108 !D->isReferenced() &&
1109 D->getAccess() == AS_none &&
1110 !D->isModulePrivate() &&
1111 D->getStorageClass() == 0 &&
1112 D->getInitStyle() == VarDecl::CInit && // Can params have anything else?
1113 D->getFunctionScopeDepth() == 0 &&
1114 D->getObjCDeclQualifier() == 0 &&
1115 !D->isKNRPromoted() &&
1116 !D->hasInheritedDefaultArg() &&
1117 D->getInit() == nullptr &&
1118 !D->hasUninstantiatedDefaultArg()) // No default expr.
1119 AbbrevToUse = Writer.getDeclParmVarAbbrev();
1120
1121 // Check things we know are true of *every* PARM_VAR_DECL, which is more than
1122 // just us assuming it.
1123 assert(!D->getTSCSpec() && "PARM_VAR_DECL can't use TLS");
1124 assert(!D->isThisDeclarationADemotedDefinition()
1125 && "PARM_VAR_DECL can't be demoted definition.");
1126 assert(D->getAccess() == AS_none && "PARM_VAR_DECL can't be public/private");
1127 assert(!D->isExceptionVariable() && "PARM_VAR_DECL can't be exception var");
1128 assert(D->getPreviousDecl() == nullptr && "PARM_VAR_DECL can't be redecl");
1129 assert(!D->isStaticDataMember() &&
1130 "PARM_VAR_DECL can't be static data member");
1131 }
1132
VisitDecompositionDecl(DecompositionDecl * D)1133 void ASTDeclWriter::VisitDecompositionDecl(DecompositionDecl *D) {
1134 // Record the number of bindings first to simplify deserialization.
1135 Record.push_back(D->bindings().size());
1136
1137 VisitVarDecl(D);
1138 for (auto *B : D->bindings())
1139 Record.AddDeclRef(B);
1140 Code = serialization::DECL_DECOMPOSITION;
1141 }
1142
VisitBindingDecl(BindingDecl * D)1143 void ASTDeclWriter::VisitBindingDecl(BindingDecl *D) {
1144 VisitValueDecl(D);
1145 Record.AddStmt(D->getBinding());
1146 Code = serialization::DECL_BINDING;
1147 }
1148
VisitFileScopeAsmDecl(FileScopeAsmDecl * D)1149 void ASTDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) {
1150 VisitDecl(D);
1151 Record.AddStmt(D->getAsmString());
1152 Record.AddSourceLocation(D->getRParenLoc());
1153 Code = serialization::DECL_FILE_SCOPE_ASM;
1154 }
1155
VisitEmptyDecl(EmptyDecl * D)1156 void ASTDeclWriter::VisitEmptyDecl(EmptyDecl *D) {
1157 VisitDecl(D);
1158 Code = serialization::DECL_EMPTY;
1159 }
1160
VisitLifetimeExtendedTemporaryDecl(LifetimeExtendedTemporaryDecl * D)1161 void ASTDeclWriter::VisitLifetimeExtendedTemporaryDecl(
1162 LifetimeExtendedTemporaryDecl *D) {
1163 VisitDecl(D);
1164 Record.AddDeclRef(D->getExtendingDecl());
1165 Record.AddStmt(D->getTemporaryExpr());
1166 Record.push_back(static_cast<bool>(D->getValue()));
1167 if (D->getValue())
1168 Record.AddAPValue(*D->getValue());
1169 Record.push_back(D->getManglingNumber());
1170 Code = serialization::DECL_LIFETIME_EXTENDED_TEMPORARY;
1171 }
VisitBlockDecl(BlockDecl * D)1172 void ASTDeclWriter::VisitBlockDecl(BlockDecl *D) {
1173 VisitDecl(D);
1174 Record.AddStmt(D->getBody());
1175 Record.AddTypeSourceInfo(D->getSignatureAsWritten());
1176 Record.push_back(D->param_size());
1177 for (ParmVarDecl *P : D->parameters())
1178 Record.AddDeclRef(P);
1179 Record.push_back(D->isVariadic());
1180 Record.push_back(D->blockMissingReturnType());
1181 Record.push_back(D->isConversionFromLambda());
1182 Record.push_back(D->doesNotEscape());
1183 Record.push_back(D->canAvoidCopyToHeap());
1184 Record.push_back(D->capturesCXXThis());
1185 Record.push_back(D->getNumCaptures());
1186 for (const auto &capture : D->captures()) {
1187 Record.AddDeclRef(capture.getVariable());
1188
1189 unsigned flags = 0;
1190 if (capture.isByRef()) flags |= 1;
1191 if (capture.isNested()) flags |= 2;
1192 if (capture.hasCopyExpr()) flags |= 4;
1193 Record.push_back(flags);
1194
1195 if (capture.hasCopyExpr()) Record.AddStmt(capture.getCopyExpr());
1196 }
1197
1198 Code = serialization::DECL_BLOCK;
1199 }
1200
VisitCapturedDecl(CapturedDecl * CD)1201 void ASTDeclWriter::VisitCapturedDecl(CapturedDecl *CD) {
1202 Record.push_back(CD->getNumParams());
1203 VisitDecl(CD);
1204 Record.push_back(CD->getContextParamPosition());
1205 Record.push_back(CD->isNothrow() ? 1 : 0);
1206 // Body is stored by VisitCapturedStmt.
1207 for (unsigned I = 0; I < CD->getNumParams(); ++I)
1208 Record.AddDeclRef(CD->getParam(I));
1209 Code = serialization::DECL_CAPTURED;
1210 }
1211
VisitLinkageSpecDecl(LinkageSpecDecl * D)1212 void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
1213 VisitDecl(D);
1214 Record.push_back(D->getLanguage());
1215 Record.AddSourceLocation(D->getExternLoc());
1216 Record.AddSourceLocation(D->getRBraceLoc());
1217 Code = serialization::DECL_LINKAGE_SPEC;
1218 }
1219
VisitExportDecl(ExportDecl * D)1220 void ASTDeclWriter::VisitExportDecl(ExportDecl *D) {
1221 VisitDecl(D);
1222 Record.AddSourceLocation(D->getRBraceLoc());
1223 Code = serialization::DECL_EXPORT;
1224 }
1225
VisitLabelDecl(LabelDecl * D)1226 void ASTDeclWriter::VisitLabelDecl(LabelDecl *D) {
1227 VisitNamedDecl(D);
1228 Record.AddSourceLocation(D->getBeginLoc());
1229 Code = serialization::DECL_LABEL;
1230 }
1231
1232
VisitNamespaceDecl(NamespaceDecl * D)1233 void ASTDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) {
1234 VisitRedeclarable(D);
1235 VisitNamedDecl(D);
1236 Record.push_back(D->isInline());
1237 Record.AddSourceLocation(D->getBeginLoc());
1238 Record.AddSourceLocation(D->getRBraceLoc());
1239
1240 if (D->isOriginalNamespace())
1241 Record.AddDeclRef(D->getAnonymousNamespace());
1242 Code = serialization::DECL_NAMESPACE;
1243
1244 if (Writer.hasChain() && D->isAnonymousNamespace() &&
1245 D == D->getMostRecentDecl()) {
1246 // This is a most recent reopening of the anonymous namespace. If its parent
1247 // is in a previous PCH (or is the TU), mark that parent for update, because
1248 // the original namespace always points to the latest re-opening of its
1249 // anonymous namespace.
1250 Decl *Parent = cast<Decl>(
1251 D->getParent()->getRedeclContext()->getPrimaryContext());
1252 if (Parent->isFromASTFile() || isa<TranslationUnitDecl>(Parent)) {
1253 Writer.DeclUpdates[Parent].push_back(
1254 ASTWriter::DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, D));
1255 }
1256 }
1257 }
1258
VisitNamespaceAliasDecl(NamespaceAliasDecl * D)1259 void ASTDeclWriter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
1260 VisitRedeclarable(D);
1261 VisitNamedDecl(D);
1262 Record.AddSourceLocation(D->getNamespaceLoc());
1263 Record.AddSourceLocation(D->getTargetNameLoc());
1264 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc());
1265 Record.AddDeclRef(D->getNamespace());
1266 Code = serialization::DECL_NAMESPACE_ALIAS;
1267 }
1268
VisitUsingDecl(UsingDecl * D)1269 void ASTDeclWriter::VisitUsingDecl(UsingDecl *D) {
1270 VisitNamedDecl(D);
1271 Record.AddSourceLocation(D->getUsingLoc());
1272 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc());
1273 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName());
1274 Record.AddDeclRef(D->FirstUsingShadow.getPointer());
1275 Record.push_back(D->hasTypename());
1276 Record.AddDeclRef(Context.getInstantiatedFromUsingDecl(D));
1277 Code = serialization::DECL_USING;
1278 }
1279
VisitUsingPackDecl(UsingPackDecl * D)1280 void ASTDeclWriter::VisitUsingPackDecl(UsingPackDecl *D) {
1281 Record.push_back(D->NumExpansions);
1282 VisitNamedDecl(D);
1283 Record.AddDeclRef(D->getInstantiatedFromUsingDecl());
1284 for (auto *E : D->expansions())
1285 Record.AddDeclRef(E);
1286 Code = serialization::DECL_USING_PACK;
1287 }
1288
VisitUsingShadowDecl(UsingShadowDecl * D)1289 void ASTDeclWriter::VisitUsingShadowDecl(UsingShadowDecl *D) {
1290 VisitRedeclarable(D);
1291 VisitNamedDecl(D);
1292 Record.AddDeclRef(D->getTargetDecl());
1293 Record.push_back(D->getIdentifierNamespace());
1294 Record.AddDeclRef(D->UsingOrNextShadow);
1295 Record.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D));
1296 Code = serialization::DECL_USING_SHADOW;
1297 }
1298
VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl * D)1299 void ASTDeclWriter::VisitConstructorUsingShadowDecl(
1300 ConstructorUsingShadowDecl *D) {
1301 VisitUsingShadowDecl(D);
1302 Record.AddDeclRef(D->NominatedBaseClassShadowDecl);
1303 Record.AddDeclRef(D->ConstructedBaseClassShadowDecl);
1304 Record.push_back(D->IsVirtual);
1305 Code = serialization::DECL_CONSTRUCTOR_USING_SHADOW;
1306 }
1307
VisitUsingDirectiveDecl(UsingDirectiveDecl * D)1308 void ASTDeclWriter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
1309 VisitNamedDecl(D);
1310 Record.AddSourceLocation(D->getUsingLoc());
1311 Record.AddSourceLocation(D->getNamespaceKeyLocation());
1312 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc());
1313 Record.AddDeclRef(D->getNominatedNamespace());
1314 Record.AddDeclRef(dyn_cast<Decl>(D->getCommonAncestor()));
1315 Code = serialization::DECL_USING_DIRECTIVE;
1316 }
1317
VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl * D)1318 void ASTDeclWriter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) {
1319 VisitValueDecl(D);
1320 Record.AddSourceLocation(D->getUsingLoc());
1321 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc());
1322 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName());
1323 Record.AddSourceLocation(D->getEllipsisLoc());
1324 Code = serialization::DECL_UNRESOLVED_USING_VALUE;
1325 }
1326
VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl * D)1327 void ASTDeclWriter::VisitUnresolvedUsingTypenameDecl(
1328 UnresolvedUsingTypenameDecl *D) {
1329 VisitTypeDecl(D);
1330 Record.AddSourceLocation(D->getTypenameLoc());
1331 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc());
1332 Record.AddSourceLocation(D->getEllipsisLoc());
1333 Code = serialization::DECL_UNRESOLVED_USING_TYPENAME;
1334 }
1335
VisitCXXRecordDecl(CXXRecordDecl * D)1336 void ASTDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) {
1337 VisitRecordDecl(D);
1338
1339 enum {
1340 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization
1341 };
1342 if (ClassTemplateDecl *TemplD = D->getDescribedClassTemplate()) {
1343 Record.push_back(CXXRecTemplate);
1344 Record.AddDeclRef(TemplD);
1345 } else if (MemberSpecializationInfo *MSInfo
1346 = D->getMemberSpecializationInfo()) {
1347 Record.push_back(CXXRecMemberSpecialization);
1348 Record.AddDeclRef(MSInfo->getInstantiatedFrom());
1349 Record.push_back(MSInfo->getTemplateSpecializationKind());
1350 Record.AddSourceLocation(MSInfo->getPointOfInstantiation());
1351 } else {
1352 Record.push_back(CXXRecNotTemplate);
1353 }
1354
1355 Record.push_back(D->isThisDeclarationADefinition());
1356 if (D->isThisDeclarationADefinition())
1357 Record.AddCXXDefinitionData(D);
1358
1359 // Store (what we currently believe to be) the key function to avoid
1360 // deserializing every method so we can compute it.
1361 if (D->isCompleteDefinition())
1362 Record.AddDeclRef(Context.getCurrentKeyFunction(D));
1363
1364 Code = serialization::DECL_CXX_RECORD;
1365 }
1366
VisitCXXMethodDecl(CXXMethodDecl * D)1367 void ASTDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) {
1368 VisitFunctionDecl(D);
1369 if (D->isCanonicalDecl()) {
1370 Record.push_back(D->size_overridden_methods());
1371 for (const CXXMethodDecl *MD : D->overridden_methods())
1372 Record.AddDeclRef(MD);
1373 } else {
1374 // We only need to record overridden methods once for the canonical decl.
1375 Record.push_back(0);
1376 }
1377
1378 if (D->getDeclContext() == D->getLexicalDeclContext() &&
1379 D->getFirstDecl() == D->getMostRecentDecl() &&
1380 !D->isInvalidDecl() &&
1381 !D->hasAttrs() &&
1382 !D->isTopLevelDeclInObjCContainer() &&
1383 D->getDeclName().getNameKind() == DeclarationName::Identifier &&
1384 !D->hasExtInfo() &&
1385 !D->hasInheritedPrototype() &&
1386 D->hasWrittenPrototype())
1387 AbbrevToUse = Writer.getDeclCXXMethodAbbrev();
1388
1389 Code = serialization::DECL_CXX_METHOD;
1390 }
1391
VisitCXXConstructorDecl(CXXConstructorDecl * D)1392 void ASTDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) {
1393 Record.push_back(D->getTrailingAllocKind());
1394 addExplicitSpecifier(D->getExplicitSpecifier(), Record);
1395 if (auto Inherited = D->getInheritedConstructor()) {
1396 Record.AddDeclRef(Inherited.getShadowDecl());
1397 Record.AddDeclRef(Inherited.getConstructor());
1398 }
1399
1400 VisitCXXMethodDecl(D);
1401 Code = serialization::DECL_CXX_CONSTRUCTOR;
1402 }
1403
VisitCXXDestructorDecl(CXXDestructorDecl * D)1404 void ASTDeclWriter::VisitCXXDestructorDecl(CXXDestructorDecl *D) {
1405 VisitCXXMethodDecl(D);
1406
1407 Record.AddDeclRef(D->getOperatorDelete());
1408 if (D->getOperatorDelete())
1409 Record.AddStmt(D->getOperatorDeleteThisArg());
1410
1411 Code = serialization::DECL_CXX_DESTRUCTOR;
1412 }
1413
VisitCXXConversionDecl(CXXConversionDecl * D)1414 void ASTDeclWriter::VisitCXXConversionDecl(CXXConversionDecl *D) {
1415 addExplicitSpecifier(D->getExplicitSpecifier(), Record);
1416 VisitCXXMethodDecl(D);
1417 Code = serialization::DECL_CXX_CONVERSION;
1418 }
1419
VisitImportDecl(ImportDecl * D)1420 void ASTDeclWriter::VisitImportDecl(ImportDecl *D) {
1421 VisitDecl(D);
1422 Record.push_back(Writer.getSubmoduleID(D->getImportedModule()));
1423 ArrayRef<SourceLocation> IdentifierLocs = D->getIdentifierLocs();
1424 Record.push_back(!IdentifierLocs.empty());
1425 if (IdentifierLocs.empty()) {
1426 Record.AddSourceLocation(D->getEndLoc());
1427 Record.push_back(1);
1428 } else {
1429 for (unsigned I = 0, N = IdentifierLocs.size(); I != N; ++I)
1430 Record.AddSourceLocation(IdentifierLocs[I]);
1431 Record.push_back(IdentifierLocs.size());
1432 }
1433 // Note: the number of source locations must always be the last element in
1434 // the record.
1435 Code = serialization::DECL_IMPORT;
1436 }
1437
VisitAccessSpecDecl(AccessSpecDecl * D)1438 void ASTDeclWriter::VisitAccessSpecDecl(AccessSpecDecl *D) {
1439 VisitDecl(D);
1440 Record.AddSourceLocation(D->getColonLoc());
1441 Code = serialization::DECL_ACCESS_SPEC;
1442 }
1443
VisitFriendDecl(FriendDecl * D)1444 void ASTDeclWriter::VisitFriendDecl(FriendDecl *D) {
1445 // Record the number of friend type template parameter lists here
1446 // so as to simplify memory allocation during deserialization.
1447 Record.push_back(D->NumTPLists);
1448 VisitDecl(D);
1449 bool hasFriendDecl = D->Friend.is<NamedDecl*>();
1450 Record.push_back(hasFriendDecl);
1451 if (hasFriendDecl)
1452 Record.AddDeclRef(D->getFriendDecl());
1453 else
1454 Record.AddTypeSourceInfo(D->getFriendType());
1455 for (unsigned i = 0; i < D->NumTPLists; ++i)
1456 Record.AddTemplateParameterList(D->getFriendTypeTemplateParameterList(i));
1457 Record.AddDeclRef(D->getNextFriend());
1458 Record.push_back(D->UnsupportedFriend);
1459 Record.AddSourceLocation(D->FriendLoc);
1460 Code = serialization::DECL_FRIEND;
1461 }
1462
VisitFriendTemplateDecl(FriendTemplateDecl * D)1463 void ASTDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) {
1464 VisitDecl(D);
1465 Record.push_back(D->getNumTemplateParameters());
1466 for (unsigned i = 0, e = D->getNumTemplateParameters(); i != e; ++i)
1467 Record.AddTemplateParameterList(D->getTemplateParameterList(i));
1468 Record.push_back(D->getFriendDecl() != nullptr);
1469 if (D->getFriendDecl())
1470 Record.AddDeclRef(D->getFriendDecl());
1471 else
1472 Record.AddTypeSourceInfo(D->getFriendType());
1473 Record.AddSourceLocation(D->getFriendLoc());
1474 Code = serialization::DECL_FRIEND_TEMPLATE;
1475 }
1476
VisitTemplateDecl(TemplateDecl * D)1477 void ASTDeclWriter::VisitTemplateDecl(TemplateDecl *D) {
1478 VisitNamedDecl(D);
1479
1480 Record.AddDeclRef(D->getTemplatedDecl());
1481 Record.AddTemplateParameterList(D->getTemplateParameters());
1482 }
1483
VisitConceptDecl(ConceptDecl * D)1484 void ASTDeclWriter::VisitConceptDecl(ConceptDecl *D) {
1485 VisitTemplateDecl(D);
1486 Record.AddStmt(D->getConstraintExpr());
1487 Code = serialization::DECL_CONCEPT;
1488 }
1489
VisitRequiresExprBodyDecl(RequiresExprBodyDecl * D)1490 void ASTDeclWriter::VisitRequiresExprBodyDecl(RequiresExprBodyDecl *D) {
1491 Code = serialization::DECL_REQUIRES_EXPR_BODY;
1492 }
1493
VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl * D)1494 void ASTDeclWriter::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) {
1495 VisitRedeclarable(D);
1496
1497 // Emit data to initialize CommonOrPrev before VisitTemplateDecl so that
1498 // getCommonPtr() can be used while this is still initializing.
1499 if (D->isFirstDecl()) {
1500 // This declaration owns the 'common' pointer, so serialize that data now.
1501 Record.AddDeclRef(D->getInstantiatedFromMemberTemplate());
1502 if (D->getInstantiatedFromMemberTemplate())
1503 Record.push_back(D->isMemberSpecialization());
1504 }
1505
1506 VisitTemplateDecl(D);
1507 Record.push_back(D->getIdentifierNamespace());
1508 }
1509
VisitClassTemplateDecl(ClassTemplateDecl * D)1510 void ASTDeclWriter::VisitClassTemplateDecl(ClassTemplateDecl *D) {
1511 VisitRedeclarableTemplateDecl(D);
1512
1513 if (D->isFirstDecl())
1514 AddTemplateSpecializations(D);
1515 Code = serialization::DECL_CLASS_TEMPLATE;
1516 }
1517
VisitClassTemplateSpecializationDecl(ClassTemplateSpecializationDecl * D)1518 void ASTDeclWriter::VisitClassTemplateSpecializationDecl(
1519 ClassTemplateSpecializationDecl *D) {
1520 RegisterTemplateSpecialization(D->getSpecializedTemplate(), D);
1521
1522 VisitCXXRecordDecl(D);
1523
1524 llvm::PointerUnion<ClassTemplateDecl *,
1525 ClassTemplatePartialSpecializationDecl *> InstFrom
1526 = D->getSpecializedTemplateOrPartial();
1527 if (Decl *InstFromD = InstFrom.dyn_cast<ClassTemplateDecl *>()) {
1528 Record.AddDeclRef(InstFromD);
1529 } else {
1530 Record.AddDeclRef(InstFrom.get<ClassTemplatePartialSpecializationDecl *>());
1531 Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs());
1532 }
1533
1534 Record.AddTemplateArgumentList(&D->getTemplateArgs());
1535 Record.AddSourceLocation(D->getPointOfInstantiation());
1536 Record.push_back(D->getSpecializationKind());
1537 Record.push_back(D->isCanonicalDecl());
1538
1539 if (D->isCanonicalDecl()) {
1540 // When reading, we'll add it to the folding set of the following template.
1541 Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl());
1542 }
1543
1544 // Explicit info.
1545 Record.AddTypeSourceInfo(D->getTypeAsWritten());
1546 if (D->getTypeAsWritten()) {
1547 Record.AddSourceLocation(D->getExternLoc());
1548 Record.AddSourceLocation(D->getTemplateKeywordLoc());
1549 }
1550
1551 Code = serialization::DECL_CLASS_TEMPLATE_SPECIALIZATION;
1552 }
1553
VisitClassTemplatePartialSpecializationDecl(ClassTemplatePartialSpecializationDecl * D)1554 void ASTDeclWriter::VisitClassTemplatePartialSpecializationDecl(
1555 ClassTemplatePartialSpecializationDecl *D) {
1556 Record.AddTemplateParameterList(D->getTemplateParameters());
1557 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten());
1558
1559 VisitClassTemplateSpecializationDecl(D);
1560
1561 // These are read/set from/to the first declaration.
1562 if (D->getPreviousDecl() == nullptr) {
1563 Record.AddDeclRef(D->getInstantiatedFromMember());
1564 Record.push_back(D->isMemberSpecialization());
1565 }
1566
1567 Code = serialization::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION;
1568 }
1569
VisitVarTemplateDecl(VarTemplateDecl * D)1570 void ASTDeclWriter::VisitVarTemplateDecl(VarTemplateDecl *D) {
1571 VisitRedeclarableTemplateDecl(D);
1572
1573 if (D->isFirstDecl())
1574 AddTemplateSpecializations(D);
1575 Code = serialization::DECL_VAR_TEMPLATE;
1576 }
1577
VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl * D)1578 void ASTDeclWriter::VisitVarTemplateSpecializationDecl(
1579 VarTemplateSpecializationDecl *D) {
1580 RegisterTemplateSpecialization(D->getSpecializedTemplate(), D);
1581
1582 VisitVarDecl(D);
1583
1584 llvm::PointerUnion<VarTemplateDecl *, VarTemplatePartialSpecializationDecl *>
1585 InstFrom = D->getSpecializedTemplateOrPartial();
1586 if (Decl *InstFromD = InstFrom.dyn_cast<VarTemplateDecl *>()) {
1587 Record.AddDeclRef(InstFromD);
1588 } else {
1589 Record.AddDeclRef(InstFrom.get<VarTemplatePartialSpecializationDecl *>());
1590 Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs());
1591 }
1592
1593 // Explicit info.
1594 Record.AddTypeSourceInfo(D->getTypeAsWritten());
1595 if (D->getTypeAsWritten()) {
1596 Record.AddSourceLocation(D->getExternLoc());
1597 Record.AddSourceLocation(D->getTemplateKeywordLoc());
1598 }
1599
1600 Record.AddTemplateArgumentList(&D->getTemplateArgs());
1601 Record.AddSourceLocation(D->getPointOfInstantiation());
1602 Record.push_back(D->getSpecializationKind());
1603 Record.push_back(D->IsCompleteDefinition);
1604 Record.push_back(D->isCanonicalDecl());
1605
1606 if (D->isCanonicalDecl()) {
1607 // When reading, we'll add it to the folding set of the following template.
1608 Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl());
1609 }
1610
1611 Code = serialization::DECL_VAR_TEMPLATE_SPECIALIZATION;
1612 }
1613
VisitVarTemplatePartialSpecializationDecl(VarTemplatePartialSpecializationDecl * D)1614 void ASTDeclWriter::VisitVarTemplatePartialSpecializationDecl(
1615 VarTemplatePartialSpecializationDecl *D) {
1616 Record.AddTemplateParameterList(D->getTemplateParameters());
1617 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten());
1618
1619 VisitVarTemplateSpecializationDecl(D);
1620
1621 // These are read/set from/to the first declaration.
1622 if (D->getPreviousDecl() == nullptr) {
1623 Record.AddDeclRef(D->getInstantiatedFromMember());
1624 Record.push_back(D->isMemberSpecialization());
1625 }
1626
1627 Code = serialization::DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION;
1628 }
1629
VisitClassScopeFunctionSpecializationDecl(ClassScopeFunctionSpecializationDecl * D)1630 void ASTDeclWriter::VisitClassScopeFunctionSpecializationDecl(
1631 ClassScopeFunctionSpecializationDecl *D) {
1632 VisitDecl(D);
1633 Record.AddDeclRef(D->getSpecialization());
1634 Record.push_back(D->hasExplicitTemplateArgs());
1635 if (D->hasExplicitTemplateArgs())
1636 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten());
1637 Code = serialization::DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION;
1638 }
1639
1640
VisitFunctionTemplateDecl(FunctionTemplateDecl * D)1641 void ASTDeclWriter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) {
1642 VisitRedeclarableTemplateDecl(D);
1643
1644 if (D->isFirstDecl())
1645 AddTemplateSpecializations(D);
1646 Code = serialization::DECL_FUNCTION_TEMPLATE;
1647 }
1648
VisitTemplateTypeParmDecl(TemplateTypeParmDecl * D)1649 void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) {
1650 Record.push_back(D->hasTypeConstraint());
1651 VisitTypeDecl(D);
1652
1653 Record.push_back(D->wasDeclaredWithTypename());
1654
1655 const TypeConstraint *TC = D->getTypeConstraint();
1656 Record.push_back(TC != nullptr);
1657 if (TC) {
1658 Record.AddNestedNameSpecifierLoc(TC->getNestedNameSpecifierLoc());
1659 Record.AddDeclarationNameInfo(TC->getConceptNameInfo());
1660 Record.AddDeclRef(TC->getNamedConcept());
1661 Record.push_back(TC->getTemplateArgsAsWritten() != nullptr);
1662 if (TC->getTemplateArgsAsWritten())
1663 Record.AddASTTemplateArgumentListInfo(TC->getTemplateArgsAsWritten());
1664 Record.AddStmt(TC->getImmediatelyDeclaredConstraint());
1665 Record.push_back(D->isExpandedParameterPack());
1666 if (D->isExpandedParameterPack())
1667 Record.push_back(D->getNumExpansionParameters());
1668 }
1669
1670 bool OwnsDefaultArg = D->hasDefaultArgument() &&
1671 !D->defaultArgumentWasInherited();
1672 Record.push_back(OwnsDefaultArg);
1673 if (OwnsDefaultArg)
1674 Record.AddTypeSourceInfo(D->getDefaultArgumentInfo());
1675
1676 Code = serialization::DECL_TEMPLATE_TYPE_PARM;
1677 }
1678
VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl * D)1679 void ASTDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) {
1680 // For an expanded parameter pack, record the number of expansion types here
1681 // so that it's easier for deserialization to allocate the right amount of
1682 // memory.
1683 Expr *TypeConstraint = D->getPlaceholderTypeConstraint();
1684 Record.push_back(!!TypeConstraint);
1685 if (D->isExpandedParameterPack())
1686 Record.push_back(D->getNumExpansionTypes());
1687
1688 VisitDeclaratorDecl(D);
1689 // TemplateParmPosition.
1690 Record.push_back(D->getDepth());
1691 Record.push_back(D->getPosition());
1692 if (TypeConstraint)
1693 Record.AddStmt(TypeConstraint);
1694
1695 if (D->isExpandedParameterPack()) {
1696 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) {
1697 Record.AddTypeRef(D->getExpansionType(I));
1698 Record.AddTypeSourceInfo(D->getExpansionTypeSourceInfo(I));
1699 }
1700
1701 Code = serialization::DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK;
1702 } else {
1703 // Rest of NonTypeTemplateParmDecl.
1704 Record.push_back(D->isParameterPack());
1705 bool OwnsDefaultArg = D->hasDefaultArgument() &&
1706 !D->defaultArgumentWasInherited();
1707 Record.push_back(OwnsDefaultArg);
1708 if (OwnsDefaultArg)
1709 Record.AddStmt(D->getDefaultArgument());
1710 Code = serialization::DECL_NON_TYPE_TEMPLATE_PARM;
1711 }
1712 }
1713
VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl * D)1714 void ASTDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) {
1715 // For an expanded parameter pack, record the number of expansion types here
1716 // so that it's easier for deserialization to allocate the right amount of
1717 // memory.
1718 if (D->isExpandedParameterPack())
1719 Record.push_back(D->getNumExpansionTemplateParameters());
1720
1721 VisitTemplateDecl(D);
1722 // TemplateParmPosition.
1723 Record.push_back(D->getDepth());
1724 Record.push_back(D->getPosition());
1725
1726 if (D->isExpandedParameterPack()) {
1727 for (unsigned I = 0, N = D->getNumExpansionTemplateParameters();
1728 I != N; ++I)
1729 Record.AddTemplateParameterList(D->getExpansionTemplateParameters(I));
1730 Code = serialization::DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK;
1731 } else {
1732 // Rest of TemplateTemplateParmDecl.
1733 Record.push_back(D->isParameterPack());
1734 bool OwnsDefaultArg = D->hasDefaultArgument() &&
1735 !D->defaultArgumentWasInherited();
1736 Record.push_back(OwnsDefaultArg);
1737 if (OwnsDefaultArg)
1738 Record.AddTemplateArgumentLoc(D->getDefaultArgument());
1739 Code = serialization::DECL_TEMPLATE_TEMPLATE_PARM;
1740 }
1741 }
1742
VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl * D)1743 void ASTDeclWriter::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) {
1744 VisitRedeclarableTemplateDecl(D);
1745 Code = serialization::DECL_TYPE_ALIAS_TEMPLATE;
1746 }
1747
VisitStaticAssertDecl(StaticAssertDecl * D)1748 void ASTDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) {
1749 VisitDecl(D);
1750 Record.AddStmt(D->getAssertExpr());
1751 Record.push_back(D->isFailed());
1752 Record.AddStmt(D->getMessage());
1753 Record.AddSourceLocation(D->getRParenLoc());
1754 Code = serialization::DECL_STATIC_ASSERT;
1755 }
1756
1757 /// Emit the DeclContext part of a declaration context decl.
VisitDeclContext(DeclContext * DC)1758 void ASTDeclWriter::VisitDeclContext(DeclContext *DC) {
1759 Record.AddOffset(Writer.WriteDeclContextLexicalBlock(Context, DC));
1760 Record.AddOffset(Writer.WriteDeclContextVisibleBlock(Context, DC));
1761 }
1762
getFirstLocalDecl(const Decl * D)1763 const Decl *ASTWriter::getFirstLocalDecl(const Decl *D) {
1764 assert(IsLocalDecl(D) && "expected a local declaration");
1765
1766 const Decl *Canon = D->getCanonicalDecl();
1767 if (IsLocalDecl(Canon))
1768 return Canon;
1769
1770 const Decl *&CacheEntry = FirstLocalDeclCache[Canon];
1771 if (CacheEntry)
1772 return CacheEntry;
1773
1774 for (const Decl *Redecl = D; Redecl; Redecl = Redecl->getPreviousDecl())
1775 if (IsLocalDecl(Redecl))
1776 D = Redecl;
1777 return CacheEntry = D;
1778 }
1779
1780 template <typename T>
VisitRedeclarable(Redeclarable<T> * D)1781 void ASTDeclWriter::VisitRedeclarable(Redeclarable<T> *D) {
1782 T *First = D->getFirstDecl();
1783 T *MostRecent = First->getMostRecentDecl();
1784 T *DAsT = static_cast<T *>(D);
1785 if (MostRecent != First) {
1786 assert(isRedeclarableDeclKind(DAsT->getKind()) &&
1787 "Not considered redeclarable?");
1788
1789 Record.AddDeclRef(First);
1790
1791 // Write out a list of local redeclarations of this declaration if it's the
1792 // first local declaration in the chain.
1793 const Decl *FirstLocal = Writer.getFirstLocalDecl(DAsT);
1794 if (DAsT == FirstLocal) {
1795 // Emit a list of all imported first declarations so that we can be sure
1796 // that all redeclarations visible to this module are before D in the
1797 // redecl chain.
1798 unsigned I = Record.size();
1799 Record.push_back(0);
1800 if (Writer.Chain)
1801 AddFirstDeclFromEachModule(DAsT, /*IncludeLocal*/false);
1802 // This is the number of imported first declarations + 1.
1803 Record[I] = Record.size() - I;
1804
1805 // Collect the set of local redeclarations of this declaration, from
1806 // newest to oldest.
1807 ASTWriter::RecordData LocalRedecls;
1808 ASTRecordWriter LocalRedeclWriter(Record, LocalRedecls);
1809 for (const Decl *Prev = FirstLocal->getMostRecentDecl();
1810 Prev != FirstLocal; Prev = Prev->getPreviousDecl())
1811 if (!Prev->isFromASTFile())
1812 LocalRedeclWriter.AddDeclRef(Prev);
1813
1814 // If we have any redecls, write them now as a separate record preceding
1815 // the declaration itself.
1816 if (LocalRedecls.empty())
1817 Record.push_back(0);
1818 else
1819 Record.AddOffset(LocalRedeclWriter.Emit(LOCAL_REDECLARATIONS));
1820 } else {
1821 Record.push_back(0);
1822 Record.AddDeclRef(FirstLocal);
1823 }
1824
1825 // Make sure that we serialize both the previous and the most-recent
1826 // declarations, which (transitively) ensures that all declarations in the
1827 // chain get serialized.
1828 //
1829 // FIXME: This is not correct; when we reach an imported declaration we
1830 // won't emit its previous declaration.
1831 (void)Writer.GetDeclRef(D->getPreviousDecl());
1832 (void)Writer.GetDeclRef(MostRecent);
1833 } else {
1834 // We use the sentinel value 0 to indicate an only declaration.
1835 Record.push_back(0);
1836 }
1837 }
1838
VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl * D)1839 void ASTDeclWriter::VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D) {
1840 Record.writeOMPChildren(D->Data);
1841 VisitDecl(D);
1842 Code = serialization::DECL_OMP_THREADPRIVATE;
1843 }
1844
VisitOMPAllocateDecl(OMPAllocateDecl * D)1845 void ASTDeclWriter::VisitOMPAllocateDecl(OMPAllocateDecl *D) {
1846 Record.writeOMPChildren(D->Data);
1847 VisitDecl(D);
1848 Code = serialization::DECL_OMP_ALLOCATE;
1849 }
1850
VisitOMPRequiresDecl(OMPRequiresDecl * D)1851 void ASTDeclWriter::VisitOMPRequiresDecl(OMPRequiresDecl *D) {
1852 Record.writeOMPChildren(D->Data);
1853 VisitDecl(D);
1854 Code = serialization::DECL_OMP_REQUIRES;
1855 }
1856
VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl * D)1857 void ASTDeclWriter::VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D) {
1858 VisitValueDecl(D);
1859 Record.AddSourceLocation(D->getBeginLoc());
1860 Record.AddStmt(D->getCombinerIn());
1861 Record.AddStmt(D->getCombinerOut());
1862 Record.AddStmt(D->getCombiner());
1863 Record.AddStmt(D->getInitOrig());
1864 Record.AddStmt(D->getInitPriv());
1865 Record.AddStmt(D->getInitializer());
1866 Record.push_back(D->getInitializerKind());
1867 Record.AddDeclRef(D->getPrevDeclInScope());
1868 Code = serialization::DECL_OMP_DECLARE_REDUCTION;
1869 }
1870
VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl * D)1871 void ASTDeclWriter::VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D) {
1872 Record.writeOMPChildren(D->Data);
1873 VisitValueDecl(D);
1874 Record.AddDeclarationName(D->getVarName());
1875 Record.AddDeclRef(D->getPrevDeclInScope());
1876 Code = serialization::DECL_OMP_DECLARE_MAPPER;
1877 }
1878
VisitOMPCapturedExprDecl(OMPCapturedExprDecl * D)1879 void ASTDeclWriter::VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D) {
1880 VisitVarDecl(D);
1881 Code = serialization::DECL_OMP_CAPTUREDEXPR;
1882 }
1883
1884 //===----------------------------------------------------------------------===//
1885 // ASTWriter Implementation
1886 //===----------------------------------------------------------------------===//
1887
WriteDeclAbbrevs()1888 void ASTWriter::WriteDeclAbbrevs() {
1889 using namespace llvm;
1890
1891 std::shared_ptr<BitCodeAbbrev> Abv;
1892
1893 // Abbreviation for DECL_FIELD
1894 Abv = std::make_shared<BitCodeAbbrev>();
1895 Abv->Add(BitCodeAbbrevOp(serialization::DECL_FIELD));
1896 // Decl
1897 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1898 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
1899 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1900 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1901 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1902 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1903 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1904 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1905 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier
1906 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1907 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1908 // NamedDecl
1909 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1910 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1911 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
1912 // ValueDecl
1913 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
1914 // DeclaratorDecl
1915 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc
1916 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
1917 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType
1918 // FieldDecl
1919 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable
1920 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle
1921 // Type Source Info
1922 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
1923 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
1924 DeclFieldAbbrev = Stream.EmitAbbrev(std::move(Abv));
1925
1926 // Abbreviation for DECL_OBJC_IVAR
1927 Abv = std::make_shared<BitCodeAbbrev>();
1928 Abv->Add(BitCodeAbbrevOp(serialization::DECL_OBJC_IVAR));
1929 // Decl
1930 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1931 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
1932 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1933 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1934 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1935 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1936 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1937 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1938 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier
1939 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1940 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1941 // NamedDecl
1942 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1943 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1944 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
1945 // ValueDecl
1946 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
1947 // DeclaratorDecl
1948 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc
1949 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
1950 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType
1951 // FieldDecl
1952 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable
1953 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle
1954 // ObjC Ivar
1955 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getAccessControl
1956 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getSynthesize
1957 // Type Source Info
1958 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
1959 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
1960 DeclObjCIvarAbbrev = Stream.EmitAbbrev(std::move(Abv));
1961
1962 // Abbreviation for DECL_ENUM
1963 Abv = std::make_shared<BitCodeAbbrev>();
1964 Abv->Add(BitCodeAbbrevOp(serialization::DECL_ENUM));
1965 // Redeclarable
1966 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
1967 // Decl
1968 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1969 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
1970 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1971 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1972 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1973 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1974 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1975 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1976 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
1977 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1978 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1979 // NamedDecl
1980 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1981 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1982 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
1983 // TypeDecl
1984 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
1985 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref
1986 // TagDecl
1987 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace
1988 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind
1989 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition
1990 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator
1991 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding
1992 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired
1993 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
1994 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
1995 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind
1996 // EnumDecl
1997 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // AddTypeRef
1998 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IntegerType
1999 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getPromotionType
2000 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumPositiveBits
2001 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumNegativeBits
2002 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScoped
2003 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScopedUsingClassTag
2004 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isFixed
2005 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));// ODRHash
2006 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InstantiatedMembEnum
2007 // DC
2008 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset
2009 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset
2010 DeclEnumAbbrev = Stream.EmitAbbrev(std::move(Abv));
2011
2012 // Abbreviation for DECL_RECORD
2013 Abv = std::make_shared<BitCodeAbbrev>();
2014 Abv->Add(BitCodeAbbrevOp(serialization::DECL_RECORD));
2015 // Redeclarable
2016 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
2017 // Decl
2018 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
2019 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
2020 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
2021 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
2022 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
2023 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
2024 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
2025 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
2026 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
2027 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
2028 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
2029 // NamedDecl
2030 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
2031 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
2032 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
2033 // TypeDecl
2034 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
2035 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref
2036 // TagDecl
2037 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace
2038 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind
2039 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition
2040 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator
2041 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding
2042 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired
2043 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
2044 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
2045 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind
2046 // RecordDecl
2047 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // FlexibleArrayMember
2048 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // AnonymousStructUnion
2049 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasObjectMember
2050 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasVolatileMember
2051
2052 // isNonTrivialToPrimitiveDefaultInitialize
2053 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2054 // isNonTrivialToPrimitiveCopy
2055 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2056 // isNonTrivialToPrimitiveDestroy
2057 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2058 // hasNonTrivialToPrimitiveDefaultInitializeCUnion
2059 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2060 // hasNonTrivialToPrimitiveDestructCUnion
2061 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2062 // hasNonTrivialToPrimitiveCopyCUnion
2063 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2064 // isParamDestroyedInCallee
2065 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2066 // getArgPassingRestrictions
2067 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2));
2068
2069 // DC
2070 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset
2071 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset
2072 DeclRecordAbbrev = Stream.EmitAbbrev(std::move(Abv));
2073
2074 // Abbreviation for DECL_PARM_VAR
2075 Abv = std::make_shared<BitCodeAbbrev>();
2076 Abv->Add(BitCodeAbbrevOp(serialization::DECL_PARM_VAR));
2077 // Redeclarable
2078 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
2079 // Decl
2080 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
2081 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
2082 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
2083 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
2084 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
2085 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
2086 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
2087 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
2088 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
2089 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
2090 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
2091 // NamedDecl
2092 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
2093 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
2094 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
2095 // ValueDecl
2096 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2097 // DeclaratorDecl
2098 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc
2099 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
2100 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType
2101 // VarDecl
2102 Abv->Add(BitCodeAbbrevOp(0)); // SClass
2103 Abv->Add(BitCodeAbbrevOp(0)); // TSCSpec
2104 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle
2105 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isARCPseudoStrong
2106 Abv->Add(BitCodeAbbrevOp(0)); // Linkage
2107 Abv->Add(BitCodeAbbrevOp(0)); // HasInit
2108 Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo
2109 // ParmVarDecl
2110 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsObjCMethodParameter
2111 Abv->Add(BitCodeAbbrevOp(0)); // ScopeDepth
2112 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ScopeIndex
2113 Abv->Add(BitCodeAbbrevOp(0)); // ObjCDeclQualifier
2114 Abv->Add(BitCodeAbbrevOp(0)); // KNRPromoted
2115 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedDefaultArg
2116 Abv->Add(BitCodeAbbrevOp(0)); // HasUninstantiatedDefaultArg
2117 // Type Source Info
2118 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
2119 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
2120 DeclParmVarAbbrev = Stream.EmitAbbrev(std::move(Abv));
2121
2122 // Abbreviation for DECL_TYPEDEF
2123 Abv = std::make_shared<BitCodeAbbrev>();
2124 Abv->Add(BitCodeAbbrevOp(serialization::DECL_TYPEDEF));
2125 // Redeclarable
2126 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
2127 // Decl
2128 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
2129 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
2130 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
2131 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
2132 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
2133 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isUsed
2134 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isReferenced
2135 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
2136 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // C++ AccessSpecifier
2137 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
2138 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
2139 // NamedDecl
2140 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
2141 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
2142 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
2143 // TypeDecl
2144 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
2145 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref
2146 // TypedefDecl
2147 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
2148 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
2149 DeclTypedefAbbrev = Stream.EmitAbbrev(std::move(Abv));
2150
2151 // Abbreviation for DECL_VAR
2152 Abv = std::make_shared<BitCodeAbbrev>();
2153 Abv->Add(BitCodeAbbrevOp(serialization::DECL_VAR));
2154 // Redeclarable
2155 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
2156 // Decl
2157 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
2158 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
2159 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
2160 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
2161 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
2162 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
2163 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
2164 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
2165 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
2166 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
2167 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
2168 // NamedDecl
2169 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
2170 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
2171 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
2172 // ValueDecl
2173 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2174 // DeclaratorDecl
2175 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc
2176 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
2177 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType
2178 // VarDecl
2179 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // SClass
2180 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // TSCSpec
2181 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // InitStyle
2182 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isARCPseudoStrong
2183 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsThisDeclarationADemotedDefinition
2184 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isExceptionVariable
2185 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isNRVOVariable
2186 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCXXForRangeDecl
2187 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isObjCForDecl
2188 Abv->Add(BitCodeAbbrevOp(0)); // isInline
2189 Abv->Add(BitCodeAbbrevOp(0)); // isInlineSpecified
2190 Abv->Add(BitCodeAbbrevOp(0)); // isConstexpr
2191 Abv->Add(BitCodeAbbrevOp(0)); // isInitCapture
2192 Abv->Add(BitCodeAbbrevOp(0)); // isPrevDeclInSameScope
2193 Abv->Add(BitCodeAbbrevOp(0)); // ImplicitParamKind
2194 Abv->Add(BitCodeAbbrevOp(0)); // EscapingByref
2195 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage
2196 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // HasConstant*
2197 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // VarKind (local enum)
2198 // Type Source Info
2199 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
2200 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
2201 DeclVarAbbrev = Stream.EmitAbbrev(std::move(Abv));
2202
2203 // Abbreviation for DECL_CXX_METHOD
2204 Abv = std::make_shared<BitCodeAbbrev>();
2205 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CXX_METHOD));
2206 // RedeclarableDecl
2207 Abv->Add(BitCodeAbbrevOp(0)); // CanonicalDecl
2208 // Decl
2209 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
2210 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
2211 Abv->Add(BitCodeAbbrevOp(0)); // Invalid
2212 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
2213 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Implicit
2214 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Used
2215 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Referenced
2216 Abv->Add(BitCodeAbbrevOp(0)); // InObjCContainer
2217 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Access
2218 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModulePrivate
2219 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
2220 // NamedDecl
2221 Abv->Add(BitCodeAbbrevOp(DeclarationName::Identifier)); // NameKind
2222 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Identifier
2223 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
2224 // ValueDecl
2225 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2226 // DeclaratorDecl
2227 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerLocStart
2228 Abv->Add(BitCodeAbbrevOp(0)); // HasExtInfo
2229 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType
2230 // FunctionDecl
2231 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 11)); // IDNS
2232 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // StorageClass
2233 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Inline
2234 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InlineSpecified
2235 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // VirtualAsWritten
2236 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Pure
2237 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedProto
2238 Abv->Add(BitCodeAbbrevOp(1)); // HasWrittenProto
2239 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Deleted
2240 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Trivial
2241 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // TrivialForCall
2242 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Defaulted
2243 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ExplicitlyDefaulted
2244 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ImplicitReturnZero
2245 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Constexpr
2246 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // UsesSEHTry
2247 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // SkippedBody
2248 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // MultiVersion
2249 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // LateParsed
2250 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage
2251 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LocEnd
2252 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // ODRHash
2253 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // TemplateKind
2254 // This Array slurps the rest of the record. Fortunately we want to encode
2255 // (nearly) all the remaining (variable number of) fields in the same way.
2256 //
2257 // This is the function template information if any, then
2258 // NumParams and Params[] from FunctionDecl, and
2259 // NumOverriddenMethods, OverriddenMethods[] from CXXMethodDecl.
2260 //
2261 // Add an AbbrevOp for 'size then elements' and use it here.
2262 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
2263 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6));
2264 DeclCXXMethodAbbrev = Stream.EmitAbbrev(std::move(Abv));
2265
2266 // Abbreviation for EXPR_DECL_REF
2267 Abv = std::make_shared<BitCodeAbbrev>();
2268 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_DECL_REF));
2269 //Stmt
2270 // Expr
2271 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2272 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent
2273 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent
2274 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent
2275 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack
2276 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ContainsErrors
2277 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind
2278 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind
2279 //DeclRefExpr
2280 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HasQualifier
2281 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //GetDeclFound
2282 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ExplicitTemplateArgs
2283 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HadMultipleCandidates
2284 Abv->Add(BitCodeAbbrevOp(0)); // RefersToEnclosingVariableOrCapture
2285 Abv->Add(BitCodeAbbrevOp(0)); // NonOdrUseReason
2286 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclRef
2287 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location
2288 DeclRefExprAbbrev = Stream.EmitAbbrev(std::move(Abv));
2289
2290 // Abbreviation for EXPR_INTEGER_LITERAL
2291 Abv = std::make_shared<BitCodeAbbrev>();
2292 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_INTEGER_LITERAL));
2293 //Stmt
2294 // Expr
2295 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2296 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent
2297 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent
2298 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent
2299 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack
2300 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ContainsErrors
2301 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind
2302 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind
2303 //Integer Literal
2304 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location
2305 Abv->Add(BitCodeAbbrevOp(32)); // Bit Width
2306 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Value
2307 IntegerLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv));
2308
2309 // Abbreviation for EXPR_CHARACTER_LITERAL
2310 Abv = std::make_shared<BitCodeAbbrev>();
2311 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CHARACTER_LITERAL));
2312 //Stmt
2313 // Expr
2314 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2315 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent
2316 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent
2317 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent
2318 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack
2319 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ContainsErrors
2320 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind
2321 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind
2322 //Character Literal
2323 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getValue
2324 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location
2325 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // getKind
2326 CharacterLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv));
2327
2328 // Abbreviation for EXPR_IMPLICIT_CAST
2329 Abv = std::make_shared<BitCodeAbbrev>();
2330 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_IMPLICIT_CAST));
2331 // Stmt
2332 // Expr
2333 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2334 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent
2335 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent
2336 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent
2337 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack
2338 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ContainsErrors
2339 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind
2340 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind
2341 // CastExpr
2342 Abv->Add(BitCodeAbbrevOp(0)); // PathSize
2343 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // HasFPFeatures
2344 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 6)); // CastKind
2345 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // PartOfExplicitCast
2346 // ImplicitCastExpr
2347 ExprImplicitCastAbbrev = Stream.EmitAbbrev(std::move(Abv));
2348
2349 Abv = std::make_shared<BitCodeAbbrev>();
2350 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_LEXICAL));
2351 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2352 DeclContextLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv));
2353
2354 Abv = std::make_shared<BitCodeAbbrev>();
2355 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_VISIBLE));
2356 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2357 DeclContextVisibleLookupAbbrev = Stream.EmitAbbrev(std::move(Abv));
2358 }
2359
2360 /// isRequiredDecl - Check if this is a "required" Decl, which must be seen by
2361 /// consumers of the AST.
2362 ///
2363 /// Such decls will always be deserialized from the AST file, so we would like
2364 /// this to be as restrictive as possible. Currently the predicate is driven by
2365 /// code generation requirements, if other clients have a different notion of
2366 /// what is "required" then we may have to consider an alternate scheme where
2367 /// clients can iterate over the top-level decls and get information on them,
2368 /// without necessary deserializing them. We could explicitly require such
2369 /// clients to use a separate API call to "realize" the decl. This should be
2370 /// relatively painless since they would presumably only do it for top-level
2371 /// decls.
isRequiredDecl(const Decl * D,ASTContext & Context,bool WritingModule)2372 static bool isRequiredDecl(const Decl *D, ASTContext &Context,
2373 bool WritingModule) {
2374 // An ObjCMethodDecl is never considered as "required" because its
2375 // implementation container always is.
2376
2377 // File scoped assembly or obj-c or OMP declare target implementation must be
2378 // seen.
2379 if (isa<FileScopeAsmDecl>(D) || isa<ObjCImplDecl>(D))
2380 return true;
2381
2382 if (WritingModule && isPartOfPerModuleInitializer(D)) {
2383 // These declarations are part of the module initializer, and are emitted
2384 // if and when the module is imported, rather than being emitted eagerly.
2385 return false;
2386 }
2387
2388 return Context.DeclMustBeEmitted(D);
2389 }
2390
WriteDecl(ASTContext & Context,Decl * D)2391 void ASTWriter::WriteDecl(ASTContext &Context, Decl *D) {
2392 PrettyDeclStackTraceEntry CrashInfo(Context, D, SourceLocation(),
2393 "serializing");
2394
2395 // Determine the ID for this declaration.
2396 serialization::DeclID ID;
2397 assert(!D->isFromASTFile() && "should not be emitting imported decl");
2398 serialization::DeclID &IDR = DeclIDs[D];
2399 if (IDR == 0)
2400 IDR = NextDeclID++;
2401
2402 ID = IDR;
2403
2404 assert(ID >= FirstDeclID && "invalid decl ID");
2405
2406 RecordData Record;
2407 ASTDeclWriter W(*this, Context, Record);
2408
2409 // Build a record for this declaration
2410 W.Visit(D);
2411
2412 // Emit this declaration to the bitstream.
2413 uint64_t Offset = W.Emit(D);
2414
2415 // Record the offset for this declaration
2416 SourceLocation Loc = D->getLocation();
2417 unsigned Index = ID - FirstDeclID;
2418 if (DeclOffsets.size() == Index)
2419 DeclOffsets.emplace_back(Loc, Offset, DeclTypesBlockStartOffset);
2420 else if (DeclOffsets.size() < Index) {
2421 // FIXME: Can/should this happen?
2422 DeclOffsets.resize(Index+1);
2423 DeclOffsets[Index].setLocation(Loc);
2424 DeclOffsets[Index].setBitOffset(Offset, DeclTypesBlockStartOffset);
2425 } else {
2426 llvm_unreachable("declarations should be emitted in ID order");
2427 }
2428
2429 SourceManager &SM = Context.getSourceManager();
2430 if (Loc.isValid() && SM.isLocalSourceLocation(Loc))
2431 associateDeclWithFile(D, ID);
2432
2433 // Note declarations that should be deserialized eagerly so that we can add
2434 // them to a record in the AST file later.
2435 if (isRequiredDecl(D, Context, WritingModule))
2436 EagerlyDeserializedDecls.push_back(ID);
2437 }
2438
AddFunctionDefinition(const FunctionDecl * FD)2439 void ASTRecordWriter::AddFunctionDefinition(const FunctionDecl *FD) {
2440 // Switch case IDs are per function body.
2441 Writer->ClearSwitchCaseIDs();
2442
2443 assert(FD->doesThisDeclarationHaveABody());
2444 bool ModulesCodegen = false;
2445 if (!FD->isDependentContext()) {
2446 Optional<GVALinkage> Linkage;
2447 if (Writer->WritingModule &&
2448 Writer->WritingModule->Kind == Module::ModuleInterfaceUnit) {
2449 // When building a C++ Modules TS module interface unit, a strong
2450 // definition in the module interface is provided by the compilation of
2451 // that module interface unit, not by its users. (Inline functions are
2452 // still emitted in module users.)
2453 Linkage = Writer->Context->GetGVALinkageForFunction(FD);
2454 ModulesCodegen = *Linkage == GVA_StrongExternal;
2455 }
2456 if (Writer->Context->getLangOpts().ModulesCodegen ||
2457 (FD->hasAttr<DLLExportAttr>() &&
2458 Writer->Context->getLangOpts().BuildingPCHWithObjectFile)) {
2459
2460 // Under -fmodules-codegen, codegen is performed for all non-internal,
2461 // non-always_inline functions, unless they are available elsewhere.
2462 if (!FD->hasAttr<AlwaysInlineAttr>()) {
2463 if (!Linkage)
2464 Linkage = Writer->Context->GetGVALinkageForFunction(FD);
2465 ModulesCodegen =
2466 *Linkage != GVA_Internal && *Linkage != GVA_AvailableExternally;
2467 }
2468 }
2469 }
2470 Record->push_back(ModulesCodegen);
2471 if (ModulesCodegen)
2472 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(FD));
2473 if (auto *CD = dyn_cast<CXXConstructorDecl>(FD)) {
2474 Record->push_back(CD->getNumCtorInitializers());
2475 if (CD->getNumCtorInitializers())
2476 AddCXXCtorInitializers(
2477 llvm::makeArrayRef(CD->init_begin(), CD->init_end()));
2478 }
2479 AddStmt(FD->getBody());
2480 }
2481