1 //===--- ASTWriterDecl.cpp - Declaration Serialization --------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements serialization for Declarations.
12 //===----------------------------------------------------------------------===//
14 #include "ASTCommon.h"
15 #include "clang/AST/DeclCXX.h"
16 #include "clang/AST/DeclContextInternals.h"
17 #include "clang/AST/DeclTemplate.h"
18 #include "clang/AST/DeclVisitor.h"
19 #include "clang/AST/Expr.h"
20 #include "clang/AST/PrettyDeclStackTrace.h"
21 #include "clang/Basic/SourceManager.h"
22 #include "clang/Serialization/ASTReader.h"
23 #include "clang/Serialization/ASTWriter.h"
24 #include "llvm/Bitcode/BitstreamWriter.h"
25 #include "llvm/Support/ErrorHandling.h"
26 using namespace clang;
27 using namespace serialization;
29 //===----------------------------------------------------------------------===//
30 // Declaration serialization
31 //===----------------------------------------------------------------------===//
34 class ASTDeclWriter : public DeclVisitor<ASTDeclWriter, void> {
37 ASTRecordWriter Record;
39 serialization::DeclCode Code;
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) {}
48 uint64_t Emit(Decl *D) {
50 llvm::report_fatal_error(StringRef("unexpected declaration kind '") +
51 D->getDeclKindName() + "'");
52 return Record.Emit(Code, AbbrevToUse);
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 VisitIndirectFieldDecl(IndirectFieldDecl *D);
98 void VisitVarDecl(VarDecl *D);
99 void VisitImplicitParamDecl(ImplicitParamDecl *D);
100 void VisitParmVarDecl(ParmVarDecl *D);
101 void VisitDecompositionDecl(DecompositionDecl *D);
102 void VisitBindingDecl(BindingDecl *D);
103 void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D);
104 void VisitTemplateDecl(TemplateDecl *D);
105 void VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D);
106 void VisitClassTemplateDecl(ClassTemplateDecl *D);
107 void VisitVarTemplateDecl(VarTemplateDecl *D);
108 void VisitFunctionTemplateDecl(FunctionTemplateDecl *D);
109 void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
110 void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D);
111 void VisitUsingDecl(UsingDecl *D);
112 void VisitUsingPackDecl(UsingPackDecl *D);
113 void VisitUsingShadowDecl(UsingShadowDecl *D);
114 void VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl *D);
115 void VisitLinkageSpecDecl(LinkageSpecDecl *D);
116 void VisitExportDecl(ExportDecl *D);
117 void VisitFileScopeAsmDecl(FileScopeAsmDecl *D);
118 void VisitImportDecl(ImportDecl *D);
119 void VisitAccessSpecDecl(AccessSpecDecl *D);
120 void VisitFriendDecl(FriendDecl *D);
121 void VisitFriendTemplateDecl(FriendTemplateDecl *D);
122 void VisitStaticAssertDecl(StaticAssertDecl *D);
123 void VisitBlockDecl(BlockDecl *D);
124 void VisitCapturedDecl(CapturedDecl *D);
125 void VisitEmptyDecl(EmptyDecl *D);
127 void VisitDeclContext(DeclContext *DC);
128 template <typename T> void VisitRedeclarable(Redeclarable<T> *D);
131 // FIXME: Put in the same order is DeclNodes.td?
132 void VisitObjCMethodDecl(ObjCMethodDecl *D);
133 void VisitObjCTypeParamDecl(ObjCTypeParamDecl *D);
134 void VisitObjCContainerDecl(ObjCContainerDecl *D);
135 void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
136 void VisitObjCIvarDecl(ObjCIvarDecl *D);
137 void VisitObjCProtocolDecl(ObjCProtocolDecl *D);
138 void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D);
139 void VisitObjCCategoryDecl(ObjCCategoryDecl *D);
140 void VisitObjCImplDecl(ObjCImplDecl *D);
141 void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
142 void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
143 void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
144 void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
145 void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
146 void VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D);
147 void VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D);
148 void VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D);
150 /// Add an Objective-C type parameter list to the given record.
151 void AddObjCTypeParamList(ObjCTypeParamList *typeParams) {
152 // Empty type parameter list.
158 Record.push_back(typeParams->size());
159 for (auto typeParam : *typeParams) {
160 Record.AddDeclRef(typeParam);
162 Record.AddSourceLocation(typeParams->getLAngleLoc());
163 Record.AddSourceLocation(typeParams->getRAngleLoc());
166 /// Add to the record the first declaration from each module file that
167 /// provides a declaration of D. The intent is to provide a sufficient
168 /// set such that reloading this set will load all current redeclarations.
169 void AddFirstDeclFromEachModule(const Decl *D, bool IncludeLocal) {
170 llvm::MapVector<ModuleFile*, const Decl*> Firsts;
171 // FIXME: We can skip entries that we know are implied by others.
172 for (const Decl *R = D->getMostRecentDecl(); R; R = R->getPreviousDecl()) {
173 if (R->isFromASTFile())
174 Firsts[Writer.Chain->getOwningModuleFile(R)] = R;
175 else if (IncludeLocal)
178 for (const auto &F : Firsts)
179 Record.AddDeclRef(F.second);
182 /// Get the specialization decl from an entry in the specialization list.
183 template <typename EntryType>
184 typename RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::DeclType *
185 getSpecializationDecl(EntryType &T) {
186 return RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::getDecl(&T);
189 /// Get the list of partial specializations from a template's common ptr.
191 decltype(T::PartialSpecializations) &getPartialSpecializations(T *Common) {
192 return Common->PartialSpecializations;
194 ArrayRef<Decl> getPartialSpecializations(FunctionTemplateDecl::Common *) {
198 template<typename DeclTy>
199 void AddTemplateSpecializations(DeclTy *D) {
200 auto *Common = D->getCommonPtr();
202 // If we have any lazy specializations, and the external AST source is
203 // our chained AST reader, we can just write out the DeclIDs. Otherwise,
204 // we need to resolve them to actual declarations.
205 if (Writer.Chain != Writer.Context->getExternalSource() &&
206 Common->LazySpecializations) {
207 D->LoadLazySpecializations();
208 assert(!Common->LazySpecializations);
211 ArrayRef<DeclID> LazySpecializations;
212 if (auto *LS = Common->LazySpecializations)
213 LazySpecializations = llvm::makeArrayRef(LS + 1, LS[0]);
215 // Add a slot to the record for the number of specializations.
216 unsigned I = Record.size();
219 // AddFirstDeclFromEachModule might trigger deserialization, invalidating
220 // *Specializations iterators.
221 llvm::SmallVector<const Decl*, 16> Specs;
222 for (auto &Entry : Common->Specializations)
223 Specs.push_back(getSpecializationDecl(Entry));
224 for (auto &Entry : getPartialSpecializations(Common))
225 Specs.push_back(getSpecializationDecl(Entry));
227 for (auto *D : Specs) {
228 assert(D->isCanonicalDecl() && "non-canonical decl in set");
229 AddFirstDeclFromEachModule(D, /*IncludeLocal*/true);
231 Record.append(LazySpecializations.begin(), LazySpecializations.end());
233 // Update the size entry we added earlier.
234 Record[I] = Record.size() - I - 1;
237 /// Ensure that this template specialization is associated with the specified
238 /// template on reload.
239 void RegisterTemplateSpecialization(const Decl *Template,
240 const Decl *Specialization) {
241 Template = Template->getCanonicalDecl();
243 // If the canonical template is local, we'll write out this specialization
245 // FIXME: We can do the same thing if there is any local declaration of
246 // the template, to avoid emitting an update record.
247 if (!Template->isFromASTFile())
250 // We only need to associate the first local declaration of the
251 // specialization. The other declarations will get pulled in by it.
252 if (Writer.getFirstLocalDecl(Specialization) != Specialization)
255 Writer.DeclUpdates[Template].push_back(ASTWriter::DeclUpdate(
256 UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION, Specialization));
261 void ASTDeclWriter::Visit(Decl *D) {
262 DeclVisitor<ASTDeclWriter>::Visit(D);
264 // Source locations require array (variable-length) abbreviations. The
265 // abbreviation infrastructure requires that arrays are encoded last, so
266 // we handle it here in the case of those classes derived from DeclaratorDecl
267 if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)) {
268 if (auto *TInfo = DD->getTypeSourceInfo())
269 Record.AddTypeLoc(TInfo->getTypeLoc());
272 // Handle FunctionDecl's body here and write it after all other Stmts/Exprs
273 // have been written. We want it last because we will not read it back when
274 // retrieving it from the AST, we'll just lazily set the offset.
275 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
276 Record.push_back(FD->doesThisDeclarationHaveABody());
277 if (FD->doesThisDeclarationHaveABody())
278 Record.AddFunctionDefinition(FD);
281 // If this declaration is also a DeclContext, write blocks for the
282 // declarations that lexically stored inside its context and those
283 // declarations that are visible from its context.
284 if (DeclContext *DC = dyn_cast<DeclContext>(D))
285 VisitDeclContext(DC);
288 void ASTDeclWriter::VisitDecl(Decl *D) {
289 Record.AddDeclRef(cast_or_null<Decl>(D->getDeclContext()));
290 if (D->getDeclContext() != D->getLexicalDeclContext())
291 Record.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext()));
294 Record.push_back(D->isInvalidDecl());
295 Record.push_back(D->hasAttrs());
297 Record.AddAttributes(D->getAttrs());
298 Record.push_back(D->isImplicit());
299 Record.push_back(D->isUsed(false));
300 Record.push_back(D->isReferenced());
301 Record.push_back(D->isTopLevelDeclInObjCContainer());
302 Record.push_back(D->getAccess());
303 Record.push_back(D->isModulePrivate());
304 Record.push_back(Writer.getSubmoduleID(D->getOwningModule()));
306 // If this declaration injected a name into a context different from its
307 // lexical context, and that context is an imported namespace, we need to
308 // update its visible declarations to include this name.
310 // This happens when we instantiate a class with a friend declaration or a
311 // function with a local extern declaration, for instance.
313 // FIXME: Can we handle this in AddedVisibleDecl instead?
314 if (D->isOutOfLine()) {
315 auto *DC = D->getDeclContext();
316 while (auto *NS = dyn_cast<NamespaceDecl>(DC->getRedeclContext())) {
317 if (!NS->isFromASTFile())
319 Writer.UpdatedDeclContexts.insert(NS->getPrimaryContext());
320 if (!NS->isInlineNamespace())
322 DC = NS->getParent();
327 void ASTDeclWriter::VisitPragmaCommentDecl(PragmaCommentDecl *D) {
328 StringRef Arg = D->getArg();
329 Record.push_back(Arg.size());
331 Record.AddSourceLocation(D->getLocStart());
332 Record.push_back(D->getCommentKind());
333 Record.AddString(Arg);
334 Code = serialization::DECL_PRAGMA_COMMENT;
337 void ASTDeclWriter::VisitPragmaDetectMismatchDecl(
338 PragmaDetectMismatchDecl *D) {
339 StringRef Name = D->getName();
340 StringRef Value = D->getValue();
341 Record.push_back(Name.size() + 1 + Value.size());
343 Record.AddSourceLocation(D->getLocStart());
344 Record.AddString(Name);
345 Record.AddString(Value);
346 Code = serialization::DECL_PRAGMA_DETECT_MISMATCH;
349 void ASTDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) {
350 llvm_unreachable("Translation units aren't directly serialized");
353 void ASTDeclWriter::VisitNamedDecl(NamedDecl *D) {
355 Record.AddDeclarationName(D->getDeclName());
356 Record.push_back(needsAnonymousDeclarationNumber(D)
357 ? Writer.getAnonymousDeclarationNumber(D)
361 void ASTDeclWriter::VisitTypeDecl(TypeDecl *D) {
363 Record.AddSourceLocation(D->getLocStart());
364 Record.AddTypeRef(QualType(D->getTypeForDecl(), 0));
367 void ASTDeclWriter::VisitTypedefNameDecl(TypedefNameDecl *D) {
368 VisitRedeclarable(D);
370 Record.AddTypeSourceInfo(D->getTypeSourceInfo());
371 Record.push_back(D->isModed());
373 Record.AddTypeRef(D->getUnderlyingType());
374 Record.AddDeclRef(D->getAnonDeclWithTypedefName(false));
377 void ASTDeclWriter::VisitTypedefDecl(TypedefDecl *D) {
378 VisitTypedefNameDecl(D);
379 if (D->getDeclContext() == D->getLexicalDeclContext() &&
382 D->getFirstDecl() == D->getMostRecentDecl() &&
383 !D->isInvalidDecl() &&
384 !D->isTopLevelDeclInObjCContainer() &&
385 !D->isModulePrivate() &&
386 !needsAnonymousDeclarationNumber(D) &&
387 D->getDeclName().getNameKind() == DeclarationName::Identifier)
388 AbbrevToUse = Writer.getDeclTypedefAbbrev();
390 Code = serialization::DECL_TYPEDEF;
393 void ASTDeclWriter::VisitTypeAliasDecl(TypeAliasDecl *D) {
394 VisitTypedefNameDecl(D);
395 Record.AddDeclRef(D->getDescribedAliasTemplate());
396 Code = serialization::DECL_TYPEALIAS;
399 void ASTDeclWriter::VisitTagDecl(TagDecl *D) {
400 VisitRedeclarable(D);
402 Record.push_back(D->getIdentifierNamespace());
403 Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding
404 if (!isa<CXXRecordDecl>(D))
405 Record.push_back(D->isCompleteDefinition());
406 Record.push_back(D->isEmbeddedInDeclarator());
407 Record.push_back(D->isFreeStanding());
408 Record.push_back(D->isCompleteDefinitionRequired());
409 Record.AddSourceRange(D->getBraceRange());
411 if (D->hasExtInfo()) {
413 Record.AddQualifierInfo(*D->getExtInfo());
414 } else if (auto *TD = D->getTypedefNameForAnonDecl()) {
416 Record.AddDeclRef(TD);
417 Record.AddIdentifierRef(TD->getDeclName().getAsIdentifierInfo());
423 void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) {
425 Record.AddTypeSourceInfo(D->getIntegerTypeSourceInfo());
426 if (!D->getIntegerTypeSourceInfo())
427 Record.AddTypeRef(D->getIntegerType());
428 Record.AddTypeRef(D->getPromotionType());
429 Record.push_back(D->getNumPositiveBits());
430 Record.push_back(D->getNumNegativeBits());
431 Record.push_back(D->isScoped());
432 Record.push_back(D->isScopedUsingClassTag());
433 Record.push_back(D->isFixed());
434 Record.push_back(D->getODRHash());
436 if (MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo()) {
437 Record.AddDeclRef(MemberInfo->getInstantiatedFrom());
438 Record.push_back(MemberInfo->getTemplateSpecializationKind());
439 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation());
441 Record.AddDeclRef(nullptr);
444 if (D->getDeclContext() == D->getLexicalDeclContext() &&
449 !D->getTypedefNameForAnonDecl() &&
450 D->getFirstDecl() == D->getMostRecentDecl() &&
451 !D->isInvalidDecl() &&
452 !D->isReferenced() &&
453 !D->isTopLevelDeclInObjCContainer() &&
454 D->getAccess() == AS_none &&
455 !D->isModulePrivate() &&
456 !CXXRecordDecl::classofKind(D->getKind()) &&
457 !D->getIntegerTypeSourceInfo() &&
458 !D->getMemberSpecializationInfo() &&
459 !needsAnonymousDeclarationNumber(D) &&
460 D->getDeclName().getNameKind() == DeclarationName::Identifier)
461 AbbrevToUse = Writer.getDeclEnumAbbrev();
463 Code = serialization::DECL_ENUM;
466 void ASTDeclWriter::VisitRecordDecl(RecordDecl *D) {
468 Record.push_back(D->hasFlexibleArrayMember());
469 Record.push_back(D->isAnonymousStructOrUnion());
470 Record.push_back(D->hasObjectMember());
471 Record.push_back(D->hasVolatileMember());
472 Record.push_back(D->isNonTrivialToPrimitiveDefaultInitialize());
473 Record.push_back(D->isNonTrivialToPrimitiveCopy());
474 Record.push_back(D->isNonTrivialToPrimitiveDestroy());
475 Record.push_back(D->isParamDestroyedInCallee());
476 Record.push_back(D->getArgPassingRestrictions());
478 if (D->getDeclContext() == D->getLexicalDeclContext() &&
483 !D->getTypedefNameForAnonDecl() &&
484 D->getFirstDecl() == D->getMostRecentDecl() &&
485 !D->isInvalidDecl() &&
486 !D->isReferenced() &&
487 !D->isTopLevelDeclInObjCContainer() &&
488 D->getAccess() == AS_none &&
489 !D->isModulePrivate() &&
490 !CXXRecordDecl::classofKind(D->getKind()) &&
491 !needsAnonymousDeclarationNumber(D) &&
492 D->getDeclName().getNameKind() == DeclarationName::Identifier)
493 AbbrevToUse = Writer.getDeclRecordAbbrev();
495 Code = serialization::DECL_RECORD;
498 void ASTDeclWriter::VisitValueDecl(ValueDecl *D) {
500 Record.AddTypeRef(D->getType());
503 void ASTDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) {
505 Record.push_back(D->getInitExpr()? 1 : 0);
506 if (D->getInitExpr())
507 Record.AddStmt(D->getInitExpr());
508 Record.AddAPSInt(D->getInitVal());
510 Code = serialization::DECL_ENUM_CONSTANT;
513 void ASTDeclWriter::VisitDeclaratorDecl(DeclaratorDecl *D) {
515 Record.AddSourceLocation(D->getInnerLocStart());
516 Record.push_back(D->hasExtInfo());
518 Record.AddQualifierInfo(*D->getExtInfo());
519 // The location information is deferred until the end of the record.
520 Record.AddTypeRef(D->getTypeSourceInfo() ? D->getTypeSourceInfo()->getType()
524 void ASTDeclWriter::VisitFunctionDecl(FunctionDecl *D) {
525 VisitRedeclarable(D);
526 VisitDeclaratorDecl(D);
527 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName());
528 Record.push_back(D->getIdentifierNamespace());
530 // FunctionDecl's body is handled last at ASTWriterDecl::Visit,
531 // after everything else is written.
533 Record.push_back((int)D->SClass); // FIXME: stable encoding
534 Record.push_back(D->IsInline);
535 Record.push_back(D->IsInlineSpecified);
536 Record.push_back(D->IsExplicitSpecified);
537 Record.push_back(D->IsVirtualAsWritten);
538 Record.push_back(D->IsPure);
539 Record.push_back(D->HasInheritedPrototype);
540 Record.push_back(D->HasWrittenPrototype);
541 Record.push_back(D->IsDeleted);
542 Record.push_back(D->IsTrivial);
543 Record.push_back(D->IsTrivialForCall);
544 Record.push_back(D->IsDefaulted);
545 Record.push_back(D->IsExplicitlyDefaulted);
546 Record.push_back(D->HasImplicitReturnZero);
547 Record.push_back(D->IsConstexpr);
548 Record.push_back(D->UsesSEHTry);
549 Record.push_back(D->HasSkippedBody);
550 Record.push_back(D->IsMultiVersion);
551 Record.push_back(D->IsLateTemplateParsed);
552 Record.push_back(D->getLinkageInternal());
553 Record.AddSourceLocation(D->getLocEnd());
555 Record.push_back(D->getODRHash());
557 Record.push_back(D->getTemplatedKind());
558 switch (D->getTemplatedKind()) {
559 case FunctionDecl::TK_NonTemplate:
561 case FunctionDecl::TK_FunctionTemplate:
562 Record.AddDeclRef(D->getDescribedFunctionTemplate());
564 case FunctionDecl::TK_MemberSpecialization: {
565 MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo();
566 Record.AddDeclRef(MemberInfo->getInstantiatedFrom());
567 Record.push_back(MemberInfo->getTemplateSpecializationKind());
568 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation());
571 case FunctionDecl::TK_FunctionTemplateSpecialization: {
572 FunctionTemplateSpecializationInfo *
573 FTSInfo = D->getTemplateSpecializationInfo();
575 RegisterTemplateSpecialization(FTSInfo->getTemplate(), D);
577 Record.AddDeclRef(FTSInfo->getTemplate());
578 Record.push_back(FTSInfo->getTemplateSpecializationKind());
580 // Template arguments.
581 Record.AddTemplateArgumentList(FTSInfo->TemplateArguments);
583 // Template args as written.
584 Record.push_back(FTSInfo->TemplateArgumentsAsWritten != nullptr);
585 if (FTSInfo->TemplateArgumentsAsWritten) {
586 Record.push_back(FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs);
587 for (int i=0, e = FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs;
589 Record.AddTemplateArgumentLoc(
590 (*FTSInfo->TemplateArgumentsAsWritten)[i]);
591 Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->LAngleLoc);
592 Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->RAngleLoc);
595 Record.AddSourceLocation(FTSInfo->getPointOfInstantiation());
597 if (D->isCanonicalDecl()) {
598 // Write the template that contains the specializations set. We will
599 // add a FunctionTemplateSpecializationInfo to it when reading.
600 Record.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl());
604 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: {
605 DependentFunctionTemplateSpecializationInfo *
606 DFTSInfo = D->getDependentSpecializationInfo();
609 Record.push_back(DFTSInfo->getNumTemplates());
610 for (int i=0, e = DFTSInfo->getNumTemplates(); i != e; ++i)
611 Record.AddDeclRef(DFTSInfo->getTemplate(i));
614 Record.push_back(DFTSInfo->getNumTemplateArgs());
615 for (int i=0, e = DFTSInfo->getNumTemplateArgs(); i != e; ++i)
616 Record.AddTemplateArgumentLoc(DFTSInfo->getTemplateArg(i));
617 Record.AddSourceLocation(DFTSInfo->getLAngleLoc());
618 Record.AddSourceLocation(DFTSInfo->getRAngleLoc());
623 Record.push_back(D->param_size());
624 for (auto P : D->parameters())
625 Record.AddDeclRef(P);
626 Code = serialization::DECL_FUNCTION;
629 void ASTDeclWriter::VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D) {
630 VisitFunctionDecl(D);
631 Record.push_back(D->IsCopyDeductionCandidate);
632 Code = serialization::DECL_CXX_DEDUCTION_GUIDE;
635 void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) {
637 // FIXME: convert to LazyStmtPtr?
638 // Unlike C/C++, method bodies will never be in header files.
639 bool HasBodyStuff = D->getBody() != nullptr ||
640 D->getSelfDecl() != nullptr || D->getCmdDecl() != nullptr;
641 Record.push_back(HasBodyStuff);
643 Record.AddStmt(D->getBody());
644 Record.AddDeclRef(D->getSelfDecl());
645 Record.AddDeclRef(D->getCmdDecl());
647 Record.push_back(D->isInstanceMethod());
648 Record.push_back(D->isVariadic());
649 Record.push_back(D->isPropertyAccessor());
650 Record.push_back(D->isDefined());
651 Record.push_back(D->IsOverriding);
652 Record.push_back(D->HasSkippedBody);
654 Record.push_back(D->IsRedeclaration);
655 Record.push_back(D->HasRedeclaration);
656 if (D->HasRedeclaration) {
657 assert(Context.getObjCMethodRedeclaration(D));
658 Record.AddDeclRef(Context.getObjCMethodRedeclaration(D));
661 // FIXME: stable encoding for @required/@optional
662 Record.push_back(D->getImplementationControl());
663 // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway/nullability
664 Record.push_back(D->getObjCDeclQualifier());
665 Record.push_back(D->hasRelatedResultType());
666 Record.AddTypeRef(D->getReturnType());
667 Record.AddTypeSourceInfo(D->getReturnTypeSourceInfo());
668 Record.AddSourceLocation(D->getLocEnd());
669 Record.push_back(D->param_size());
670 for (const auto *P : D->parameters())
671 Record.AddDeclRef(P);
673 Record.push_back(D->SelLocsKind);
674 unsigned NumStoredSelLocs = D->getNumStoredSelLocs();
675 SourceLocation *SelLocs = D->getStoredSelLocs();
676 Record.push_back(NumStoredSelLocs);
677 for (unsigned i = 0; i != NumStoredSelLocs; ++i)
678 Record.AddSourceLocation(SelLocs[i]);
680 Code = serialization::DECL_OBJC_METHOD;
683 void ASTDeclWriter::VisitObjCTypeParamDecl(ObjCTypeParamDecl *D) {
684 VisitTypedefNameDecl(D);
685 Record.push_back(D->Variance);
686 Record.push_back(D->Index);
687 Record.AddSourceLocation(D->VarianceLoc);
688 Record.AddSourceLocation(D->ColonLoc);
690 Code = serialization::DECL_OBJC_TYPE_PARAM;
693 void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) {
695 Record.AddSourceLocation(D->getAtStartLoc());
696 Record.AddSourceRange(D->getAtEndRange());
697 // Abstract class (no need to define a stable serialization::DECL code).
700 void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) {
701 VisitRedeclarable(D);
702 VisitObjCContainerDecl(D);
703 Record.AddTypeRef(QualType(D->getTypeForDecl(), 0));
704 AddObjCTypeParamList(D->TypeParamList);
706 Record.push_back(D->isThisDeclarationADefinition());
707 if (D->isThisDeclarationADefinition()) {
708 // Write the DefinitionData
709 ObjCInterfaceDecl::DefinitionData &Data = D->data();
711 Record.AddTypeSourceInfo(D->getSuperClassTInfo());
712 Record.AddSourceLocation(D->getEndOfDefinitionLoc());
713 Record.push_back(Data.HasDesignatedInitializers);
715 // Write out the protocols that are directly referenced by the @interface.
716 Record.push_back(Data.ReferencedProtocols.size());
717 for (const auto *P : D->protocols())
718 Record.AddDeclRef(P);
719 for (const auto &PL : D->protocol_locs())
720 Record.AddSourceLocation(PL);
722 // Write out the protocols that are transitively referenced.
723 Record.push_back(Data.AllReferencedProtocols.size());
724 for (ObjCList<ObjCProtocolDecl>::iterator
725 P = Data.AllReferencedProtocols.begin(),
726 PEnd = Data.AllReferencedProtocols.end();
728 Record.AddDeclRef(*P);
731 if (ObjCCategoryDecl *Cat = D->getCategoryListRaw()) {
732 // Ensure that we write out the set of categories for this class.
733 Writer.ObjCClassesWithCategories.insert(D);
735 // Make sure that the categories get serialized.
736 for (; Cat; Cat = Cat->getNextClassCategoryRaw())
737 (void)Writer.GetDeclRef(Cat);
741 Code = serialization::DECL_OBJC_INTERFACE;
744 void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) {
746 // FIXME: stable encoding for @public/@private/@protected/@package
747 Record.push_back(D->getAccessControl());
748 Record.push_back(D->getSynthesize());
750 if (D->getDeclContext() == D->getLexicalDeclContext() &&
754 !D->isInvalidDecl() &&
755 !D->isReferenced() &&
756 !D->isModulePrivate() &&
760 AbbrevToUse = Writer.getDeclObjCIvarAbbrev();
762 Code = serialization::DECL_OBJC_IVAR;
765 void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) {
766 VisitRedeclarable(D);
767 VisitObjCContainerDecl(D);
769 Record.push_back(D->isThisDeclarationADefinition());
770 if (D->isThisDeclarationADefinition()) {
771 Record.push_back(D->protocol_size());
772 for (const auto *I : D->protocols())
773 Record.AddDeclRef(I);
774 for (const auto &PL : D->protocol_locs())
775 Record.AddSourceLocation(PL);
778 Code = serialization::DECL_OBJC_PROTOCOL;
781 void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) {
783 Code = serialization::DECL_OBJC_AT_DEFS_FIELD;
786 void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) {
787 VisitObjCContainerDecl(D);
788 Record.AddSourceLocation(D->getCategoryNameLoc());
789 Record.AddSourceLocation(D->getIvarLBraceLoc());
790 Record.AddSourceLocation(D->getIvarRBraceLoc());
791 Record.AddDeclRef(D->getClassInterface());
792 AddObjCTypeParamList(D->TypeParamList);
793 Record.push_back(D->protocol_size());
794 for (const auto *I : D->protocols())
795 Record.AddDeclRef(I);
796 for (const auto &PL : D->protocol_locs())
797 Record.AddSourceLocation(PL);
798 Code = serialization::DECL_OBJC_CATEGORY;
801 void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) {
803 Record.AddDeclRef(D->getClassInterface());
804 Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS;
807 void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
809 Record.AddSourceLocation(D->getAtLoc());
810 Record.AddSourceLocation(D->getLParenLoc());
811 Record.AddTypeRef(D->getType());
812 Record.AddTypeSourceInfo(D->getTypeSourceInfo());
813 // FIXME: stable encoding
814 Record.push_back((unsigned)D->getPropertyAttributes());
815 Record.push_back((unsigned)D->getPropertyAttributesAsWritten());
816 // FIXME: stable encoding
817 Record.push_back((unsigned)D->getPropertyImplementation());
818 Record.AddDeclarationName(D->getGetterName());
819 Record.AddSourceLocation(D->getGetterNameLoc());
820 Record.AddDeclarationName(D->getSetterName());
821 Record.AddSourceLocation(D->getSetterNameLoc());
822 Record.AddDeclRef(D->getGetterMethodDecl());
823 Record.AddDeclRef(D->getSetterMethodDecl());
824 Record.AddDeclRef(D->getPropertyIvarDecl());
825 Code = serialization::DECL_OBJC_PROPERTY;
828 void ASTDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) {
829 VisitObjCContainerDecl(D);
830 Record.AddDeclRef(D->getClassInterface());
831 // Abstract class (no need to define a stable serialization::DECL code).
834 void ASTDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
835 VisitObjCImplDecl(D);
836 Record.AddSourceLocation(D->getCategoryNameLoc());
837 Code = serialization::DECL_OBJC_CATEGORY_IMPL;
840 void ASTDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
841 VisitObjCImplDecl(D);
842 Record.AddDeclRef(D->getSuperClass());
843 Record.AddSourceLocation(D->getSuperClassLoc());
844 Record.AddSourceLocation(D->getIvarLBraceLoc());
845 Record.AddSourceLocation(D->getIvarRBraceLoc());
846 Record.push_back(D->hasNonZeroConstructors());
847 Record.push_back(D->hasDestructors());
848 Record.push_back(D->NumIvarInitializers);
849 if (D->NumIvarInitializers)
850 Record.AddCXXCtorInitializers(
851 llvm::makeArrayRef(D->init_begin(), D->init_end()));
852 Code = serialization::DECL_OBJC_IMPLEMENTATION;
855 void ASTDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
857 Record.AddSourceLocation(D->getLocStart());
858 Record.AddDeclRef(D->getPropertyDecl());
859 Record.AddDeclRef(D->getPropertyIvarDecl());
860 Record.AddSourceLocation(D->getPropertyIvarDeclLoc());
861 Record.AddStmt(D->getGetterCXXConstructor());
862 Record.AddStmt(D->getSetterCXXAssignment());
863 Code = serialization::DECL_OBJC_PROPERTY_IMPL;
866 void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) {
867 VisitDeclaratorDecl(D);
868 Record.push_back(D->isMutable());
870 FieldDecl::InitStorageKind ISK = D->InitStorage.getInt();
871 Record.push_back(ISK);
872 if (ISK == FieldDecl::ISK_CapturedVLAType)
873 Record.AddTypeRef(QualType(D->getCapturedVLAType(), 0));
875 Record.AddStmt(D->getInClassInitializer());
877 Record.AddStmt(D->getBitWidth());
879 if (!D->getDeclName())
880 Record.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D));
882 if (D->getDeclContext() == D->getLexicalDeclContext() &&
886 !D->isInvalidDecl() &&
887 !D->isReferenced() &&
888 !D->isTopLevelDeclInObjCContainer() &&
889 !D->isModulePrivate() &&
891 !D->hasInClassInitializer() &&
892 !D->hasCapturedVLAType() &&
894 !ObjCIvarDecl::classofKind(D->getKind()) &&
895 !ObjCAtDefsFieldDecl::classofKind(D->getKind()) &&
897 AbbrevToUse = Writer.getDeclFieldAbbrev();
899 Code = serialization::DECL_FIELD;
902 void ASTDeclWriter::VisitMSPropertyDecl(MSPropertyDecl *D) {
903 VisitDeclaratorDecl(D);
904 Record.AddIdentifierRef(D->getGetterId());
905 Record.AddIdentifierRef(D->getSetterId());
906 Code = serialization::DECL_MS_PROPERTY;
909 void ASTDeclWriter::VisitIndirectFieldDecl(IndirectFieldDecl *D) {
911 Record.push_back(D->getChainingSize());
913 for (const auto *P : D->chain())
914 Record.AddDeclRef(P);
915 Code = serialization::DECL_INDIRECTFIELD;
918 void ASTDeclWriter::VisitVarDecl(VarDecl *D) {
919 VisitRedeclarable(D);
920 VisitDeclaratorDecl(D);
921 Record.push_back(D->getStorageClass());
922 Record.push_back(D->getTSCSpec());
923 Record.push_back(D->getInitStyle());
924 if (!isa<ParmVarDecl>(D)) {
925 Record.push_back(D->isThisDeclarationADemotedDefinition());
926 Record.push_back(D->isExceptionVariable());
927 Record.push_back(D->isNRVOVariable());
928 Record.push_back(D->isCXXForRangeDecl());
929 Record.push_back(D->isObjCForDecl());
930 Record.push_back(D->isARCPseudoStrong());
931 Record.push_back(D->isInline());
932 Record.push_back(D->isInlineSpecified());
933 Record.push_back(D->isConstexpr());
934 Record.push_back(D->isInitCapture());
935 Record.push_back(D->isPreviousDeclInSameBlockScope());
936 if (const auto *IPD = dyn_cast<ImplicitParamDecl>(D))
937 Record.push_back(static_cast<unsigned>(IPD->getParameterKind()));
941 Record.push_back(D->getLinkageInternal());
944 Record.push_back(!D->isInitKnownICE() ? 1 : (D->isInitICE() ? 3 : 2));
945 Record.AddStmt(D->getInit());
950 if (D->getStorageDuration() == SD_Static) {
951 bool ModulesCodegen = false;
952 if (Writer.WritingModule &&
953 !D->getDescribedVarTemplate() && !D->getMemberSpecializationInfo() &&
954 !isa<VarTemplateSpecializationDecl>(D)) {
955 // When building a C++ Modules TS module interface unit, a strong
956 // definition in the module interface is provided by the compilation of
957 // that module interface unit, not by its users. (Inline variables are
958 // still emitted in module users.)
960 (Writer.WritingModule->Kind == Module::ModuleInterfaceUnit &&
961 Writer.Context->GetGVALinkageForVariable(D) == GVA_StrongExternal);
963 Record.push_back(ModulesCodegen);
965 Writer.ModularCodegenDecls.push_back(Writer.GetDeclRef(D));
969 VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization
971 if (VarTemplateDecl *TemplD = D->getDescribedVarTemplate()) {
972 Record.push_back(VarTemplate);
973 Record.AddDeclRef(TemplD);
974 } else if (MemberSpecializationInfo *SpecInfo
975 = D->getMemberSpecializationInfo()) {
976 Record.push_back(StaticDataMemberSpecialization);
977 Record.AddDeclRef(SpecInfo->getInstantiatedFrom());
978 Record.push_back(SpecInfo->getTemplateSpecializationKind());
979 Record.AddSourceLocation(SpecInfo->getPointOfInstantiation());
981 Record.push_back(VarNotTemplate);
984 if (D->getDeclContext() == D->getLexicalDeclContext() &&
988 !D->isInvalidDecl() &&
989 !D->isReferenced() &&
990 !D->isTopLevelDeclInObjCContainer() &&
991 D->getAccess() == AS_none &&
992 !D->isModulePrivate() &&
993 !needsAnonymousDeclarationNumber(D) &&
994 D->getDeclName().getNameKind() == DeclarationName::Identifier &&
996 D->getFirstDecl() == D->getMostRecentDecl() &&
997 D->getKind() == Decl::Var &&
1000 !D->isInitCapture() &&
1001 !D->isPreviousDeclInSameBlockScope() &&
1002 D->getStorageDuration() != SD_Static &&
1003 !D->getMemberSpecializationInfo())
1004 AbbrevToUse = Writer.getDeclVarAbbrev();
1006 Code = serialization::DECL_VAR;
1009 void ASTDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) {
1011 Code = serialization::DECL_IMPLICIT_PARAM;
1014 void ASTDeclWriter::VisitParmVarDecl(ParmVarDecl *D) {
1016 Record.push_back(D->isObjCMethodParameter());
1017 Record.push_back(D->getFunctionScopeDepth());
1018 Record.push_back(D->getFunctionScopeIndex());
1019 Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding
1020 Record.push_back(D->isKNRPromoted());
1021 Record.push_back(D->hasInheritedDefaultArg());
1022 Record.push_back(D->hasUninstantiatedDefaultArg());
1023 if (D->hasUninstantiatedDefaultArg())
1024 Record.AddStmt(D->getUninstantiatedDefaultArg());
1025 Code = serialization::DECL_PARM_VAR;
1027 assert(!D->isARCPseudoStrong()); // can be true of ImplicitParamDecl
1029 // If the assumptions about the DECL_PARM_VAR abbrev are true, use it. Here
1030 // we dynamically check for the properties that we optimize for, but don't
1031 // know are true of all PARM_VAR_DECLs.
1032 if (D->getDeclContext() == D->getLexicalDeclContext() &&
1036 !D->isUsed(false) &&
1037 !D->isInvalidDecl() &&
1038 !D->isReferenced() &&
1039 D->getAccess() == AS_none &&
1040 !D->isModulePrivate() &&
1041 D->getStorageClass() == 0 &&
1042 D->getInitStyle() == VarDecl::CInit && // Can params have anything else?
1043 D->getFunctionScopeDepth() == 0 &&
1044 D->getObjCDeclQualifier() == 0 &&
1045 !D->isKNRPromoted() &&
1046 !D->hasInheritedDefaultArg() &&
1047 D->getInit() == nullptr &&
1048 !D->hasUninstantiatedDefaultArg()) // No default expr.
1049 AbbrevToUse = Writer.getDeclParmVarAbbrev();
1051 // Check things we know are true of *every* PARM_VAR_DECL, which is more than
1052 // just us assuming it.
1053 assert(!D->getTSCSpec() && "PARM_VAR_DECL can't use TLS");
1054 assert(!D->isThisDeclarationADemotedDefinition()
1055 && "PARM_VAR_DECL can't be demoted definition.");
1056 assert(D->getAccess() == AS_none && "PARM_VAR_DECL can't be public/private");
1057 assert(!D->isExceptionVariable() && "PARM_VAR_DECL can't be exception var");
1058 assert(D->getPreviousDecl() == nullptr && "PARM_VAR_DECL can't be redecl");
1059 assert(!D->isStaticDataMember() &&
1060 "PARM_VAR_DECL can't be static data member");
1063 void ASTDeclWriter::VisitDecompositionDecl(DecompositionDecl *D) {
1064 // Record the number of bindings first to simplify deserialization.
1065 Record.push_back(D->bindings().size());
1068 for (auto *B : D->bindings())
1069 Record.AddDeclRef(B);
1070 Code = serialization::DECL_DECOMPOSITION;
1073 void ASTDeclWriter::VisitBindingDecl(BindingDecl *D) {
1075 Record.AddStmt(D->getBinding());
1076 Code = serialization::DECL_BINDING;
1079 void ASTDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) {
1081 Record.AddStmt(D->getAsmString());
1082 Record.AddSourceLocation(D->getRParenLoc());
1083 Code = serialization::DECL_FILE_SCOPE_ASM;
1086 void ASTDeclWriter::VisitEmptyDecl(EmptyDecl *D) {
1088 Code = serialization::DECL_EMPTY;
1091 void ASTDeclWriter::VisitBlockDecl(BlockDecl *D) {
1093 Record.AddStmt(D->getBody());
1094 Record.AddTypeSourceInfo(D->getSignatureAsWritten());
1095 Record.push_back(D->param_size());
1096 for (ParmVarDecl *P : D->parameters())
1097 Record.AddDeclRef(P);
1098 Record.push_back(D->isVariadic());
1099 Record.push_back(D->blockMissingReturnType());
1100 Record.push_back(D->isConversionFromLambda());
1101 Record.push_back(D->capturesCXXThis());
1102 Record.push_back(D->getNumCaptures());
1103 for (const auto &capture : D->captures()) {
1104 Record.AddDeclRef(capture.getVariable());
1107 if (capture.isByRef()) flags |= 1;
1108 if (capture.isNested()) flags |= 2;
1109 if (capture.hasCopyExpr()) flags |= 4;
1110 Record.push_back(flags);
1112 if (capture.hasCopyExpr()) Record.AddStmt(capture.getCopyExpr());
1115 Code = serialization::DECL_BLOCK;
1118 void ASTDeclWriter::VisitCapturedDecl(CapturedDecl *CD) {
1119 Record.push_back(CD->getNumParams());
1121 Record.push_back(CD->getContextParamPosition());
1122 Record.push_back(CD->isNothrow() ? 1 : 0);
1123 // Body is stored by VisitCapturedStmt.
1124 for (unsigned I = 0; I < CD->getNumParams(); ++I)
1125 Record.AddDeclRef(CD->getParam(I));
1126 Code = serialization::DECL_CAPTURED;
1129 void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
1131 Record.push_back(D->getLanguage());
1132 Record.AddSourceLocation(D->getExternLoc());
1133 Record.AddSourceLocation(D->getRBraceLoc());
1134 Code = serialization::DECL_LINKAGE_SPEC;
1137 void ASTDeclWriter::VisitExportDecl(ExportDecl *D) {
1139 Record.AddSourceLocation(D->getRBraceLoc());
1140 Code = serialization::DECL_EXPORT;
1143 void ASTDeclWriter::VisitLabelDecl(LabelDecl *D) {
1145 Record.AddSourceLocation(D->getLocStart());
1146 Code = serialization::DECL_LABEL;
1150 void ASTDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) {
1151 VisitRedeclarable(D);
1153 Record.push_back(D->isInline());
1154 Record.AddSourceLocation(D->getLocStart());
1155 Record.AddSourceLocation(D->getRBraceLoc());
1157 if (D->isOriginalNamespace())
1158 Record.AddDeclRef(D->getAnonymousNamespace());
1159 Code = serialization::DECL_NAMESPACE;
1161 if (Writer.hasChain() && D->isAnonymousNamespace() &&
1162 D == D->getMostRecentDecl()) {
1163 // This is a most recent reopening of the anonymous namespace. If its parent
1164 // is in a previous PCH (or is the TU), mark that parent for update, because
1165 // the original namespace always points to the latest re-opening of its
1166 // anonymous namespace.
1167 Decl *Parent = cast<Decl>(
1168 D->getParent()->getRedeclContext()->getPrimaryContext());
1169 if (Parent->isFromASTFile() || isa<TranslationUnitDecl>(Parent)) {
1170 Writer.DeclUpdates[Parent].push_back(
1171 ASTWriter::DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, D));
1176 void ASTDeclWriter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
1177 VisitRedeclarable(D);
1179 Record.AddSourceLocation(D->getNamespaceLoc());
1180 Record.AddSourceLocation(D->getTargetNameLoc());
1181 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc());
1182 Record.AddDeclRef(D->getNamespace());
1183 Code = serialization::DECL_NAMESPACE_ALIAS;
1186 void ASTDeclWriter::VisitUsingDecl(UsingDecl *D) {
1188 Record.AddSourceLocation(D->getUsingLoc());
1189 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc());
1190 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName());
1191 Record.AddDeclRef(D->FirstUsingShadow.getPointer());
1192 Record.push_back(D->hasTypename());
1193 Record.AddDeclRef(Context.getInstantiatedFromUsingDecl(D));
1194 Code = serialization::DECL_USING;
1197 void ASTDeclWriter::VisitUsingPackDecl(UsingPackDecl *D) {
1198 Record.push_back(D->NumExpansions);
1200 Record.AddDeclRef(D->getInstantiatedFromUsingDecl());
1201 for (auto *E : D->expansions())
1202 Record.AddDeclRef(E);
1203 Code = serialization::DECL_USING_PACK;
1206 void ASTDeclWriter::VisitUsingShadowDecl(UsingShadowDecl *D) {
1207 VisitRedeclarable(D);
1209 Record.AddDeclRef(D->getTargetDecl());
1210 Record.push_back(D->getIdentifierNamespace());
1211 Record.AddDeclRef(D->UsingOrNextShadow);
1212 Record.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D));
1213 Code = serialization::DECL_USING_SHADOW;
1216 void ASTDeclWriter::VisitConstructorUsingShadowDecl(
1217 ConstructorUsingShadowDecl *D) {
1218 VisitUsingShadowDecl(D);
1219 Record.AddDeclRef(D->NominatedBaseClassShadowDecl);
1220 Record.AddDeclRef(D->ConstructedBaseClassShadowDecl);
1221 Record.push_back(D->IsVirtual);
1222 Code = serialization::DECL_CONSTRUCTOR_USING_SHADOW;
1225 void ASTDeclWriter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
1227 Record.AddSourceLocation(D->getUsingLoc());
1228 Record.AddSourceLocation(D->getNamespaceKeyLocation());
1229 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc());
1230 Record.AddDeclRef(D->getNominatedNamespace());
1231 Record.AddDeclRef(dyn_cast<Decl>(D->getCommonAncestor()));
1232 Code = serialization::DECL_USING_DIRECTIVE;
1235 void ASTDeclWriter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) {
1237 Record.AddSourceLocation(D->getUsingLoc());
1238 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc());
1239 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName());
1240 Record.AddSourceLocation(D->getEllipsisLoc());
1241 Code = serialization::DECL_UNRESOLVED_USING_VALUE;
1244 void ASTDeclWriter::VisitUnresolvedUsingTypenameDecl(
1245 UnresolvedUsingTypenameDecl *D) {
1247 Record.AddSourceLocation(D->getTypenameLoc());
1248 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc());
1249 Record.AddSourceLocation(D->getEllipsisLoc());
1250 Code = serialization::DECL_UNRESOLVED_USING_TYPENAME;
1253 void ASTDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) {
1257 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization
1259 if (ClassTemplateDecl *TemplD = D->getDescribedClassTemplate()) {
1260 Record.push_back(CXXRecTemplate);
1261 Record.AddDeclRef(TemplD);
1262 } else if (MemberSpecializationInfo *MSInfo
1263 = D->getMemberSpecializationInfo()) {
1264 Record.push_back(CXXRecMemberSpecialization);
1265 Record.AddDeclRef(MSInfo->getInstantiatedFrom());
1266 Record.push_back(MSInfo->getTemplateSpecializationKind());
1267 Record.AddSourceLocation(MSInfo->getPointOfInstantiation());
1269 Record.push_back(CXXRecNotTemplate);
1272 Record.push_back(D->isThisDeclarationADefinition());
1273 if (D->isThisDeclarationADefinition())
1274 Record.AddCXXDefinitionData(D);
1276 // Store (what we currently believe to be) the key function to avoid
1277 // deserializing every method so we can compute it.
1278 if (D->IsCompleteDefinition)
1279 Record.AddDeclRef(Context.getCurrentKeyFunction(D));
1281 Code = serialization::DECL_CXX_RECORD;
1284 void ASTDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) {
1285 VisitFunctionDecl(D);
1286 if (D->isCanonicalDecl()) {
1287 Record.push_back(D->size_overridden_methods());
1288 for (const CXXMethodDecl *MD : D->overridden_methods())
1289 Record.AddDeclRef(MD);
1291 // We only need to record overridden methods once for the canonical decl.
1292 Record.push_back(0);
1295 if (D->getDeclContext() == D->getLexicalDeclContext() &&
1296 D->getFirstDecl() == D->getMostRecentDecl() &&
1297 !D->isInvalidDecl() &&
1299 !D->isTopLevelDeclInObjCContainer() &&
1300 D->getDeclName().getNameKind() == DeclarationName::Identifier &&
1302 !D->hasInheritedPrototype() &&
1303 D->hasWrittenPrototype())
1304 AbbrevToUse = Writer.getDeclCXXMethodAbbrev();
1306 Code = serialization::DECL_CXX_METHOD;
1309 void ASTDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) {
1310 if (auto Inherited = D->getInheritedConstructor()) {
1311 Record.AddDeclRef(Inherited.getShadowDecl());
1312 Record.AddDeclRef(Inherited.getConstructor());
1313 Code = serialization::DECL_CXX_INHERITED_CONSTRUCTOR;
1315 Code = serialization::DECL_CXX_CONSTRUCTOR;
1318 VisitCXXMethodDecl(D);
1320 Code = D->isInheritingConstructor()
1321 ? serialization::DECL_CXX_INHERITED_CONSTRUCTOR
1322 : serialization::DECL_CXX_CONSTRUCTOR;
1325 void ASTDeclWriter::VisitCXXDestructorDecl(CXXDestructorDecl *D) {
1326 VisitCXXMethodDecl(D);
1328 Record.AddDeclRef(D->getOperatorDelete());
1329 if (D->getOperatorDelete())
1330 Record.AddStmt(D->getOperatorDeleteThisArg());
1332 Code = serialization::DECL_CXX_DESTRUCTOR;
1335 void ASTDeclWriter::VisitCXXConversionDecl(CXXConversionDecl *D) {
1336 VisitCXXMethodDecl(D);
1337 Code = serialization::DECL_CXX_CONVERSION;
1340 void ASTDeclWriter::VisitImportDecl(ImportDecl *D) {
1342 Record.push_back(Writer.getSubmoduleID(D->getImportedModule()));
1343 ArrayRef<SourceLocation> IdentifierLocs = D->getIdentifierLocs();
1344 Record.push_back(!IdentifierLocs.empty());
1345 if (IdentifierLocs.empty()) {
1346 Record.AddSourceLocation(D->getLocEnd());
1347 Record.push_back(1);
1349 for (unsigned I = 0, N = IdentifierLocs.size(); I != N; ++I)
1350 Record.AddSourceLocation(IdentifierLocs[I]);
1351 Record.push_back(IdentifierLocs.size());
1353 // Note: the number of source locations must always be the last element in
1355 Code = serialization::DECL_IMPORT;
1358 void ASTDeclWriter::VisitAccessSpecDecl(AccessSpecDecl *D) {
1360 Record.AddSourceLocation(D->getColonLoc());
1361 Code = serialization::DECL_ACCESS_SPEC;
1364 void ASTDeclWriter::VisitFriendDecl(FriendDecl *D) {
1365 // Record the number of friend type template parameter lists here
1366 // so as to simplify memory allocation during deserialization.
1367 Record.push_back(D->NumTPLists);
1369 bool hasFriendDecl = D->Friend.is<NamedDecl*>();
1370 Record.push_back(hasFriendDecl);
1372 Record.AddDeclRef(D->getFriendDecl());
1374 Record.AddTypeSourceInfo(D->getFriendType());
1375 for (unsigned i = 0; i < D->NumTPLists; ++i)
1376 Record.AddTemplateParameterList(D->getFriendTypeTemplateParameterList(i));
1377 Record.AddDeclRef(D->getNextFriend());
1378 Record.push_back(D->UnsupportedFriend);
1379 Record.AddSourceLocation(D->FriendLoc);
1380 Code = serialization::DECL_FRIEND;
1383 void ASTDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) {
1385 Record.push_back(D->getNumTemplateParameters());
1386 for (unsigned i = 0, e = D->getNumTemplateParameters(); i != e; ++i)
1387 Record.AddTemplateParameterList(D->getTemplateParameterList(i));
1388 Record.push_back(D->getFriendDecl() != nullptr);
1389 if (D->getFriendDecl())
1390 Record.AddDeclRef(D->getFriendDecl());
1392 Record.AddTypeSourceInfo(D->getFriendType());
1393 Record.AddSourceLocation(D->getFriendLoc());
1394 Code = serialization::DECL_FRIEND_TEMPLATE;
1397 void ASTDeclWriter::VisitTemplateDecl(TemplateDecl *D) {
1400 Record.AddDeclRef(D->getTemplatedDecl());
1401 Record.AddTemplateParameterList(D->getTemplateParameters());
1404 void ASTDeclWriter::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) {
1405 VisitRedeclarable(D);
1407 // Emit data to initialize CommonOrPrev before VisitTemplateDecl so that
1408 // getCommonPtr() can be used while this is still initializing.
1409 if (D->isFirstDecl()) {
1410 // This declaration owns the 'common' pointer, so serialize that data now.
1411 Record.AddDeclRef(D->getInstantiatedFromMemberTemplate());
1412 if (D->getInstantiatedFromMemberTemplate())
1413 Record.push_back(D->isMemberSpecialization());
1416 VisitTemplateDecl(D);
1417 Record.push_back(D->getIdentifierNamespace());
1420 void ASTDeclWriter::VisitClassTemplateDecl(ClassTemplateDecl *D) {
1421 VisitRedeclarableTemplateDecl(D);
1423 if (D->isFirstDecl())
1424 AddTemplateSpecializations(D);
1425 Code = serialization::DECL_CLASS_TEMPLATE;
1428 void ASTDeclWriter::VisitClassTemplateSpecializationDecl(
1429 ClassTemplateSpecializationDecl *D) {
1430 RegisterTemplateSpecialization(D->getSpecializedTemplate(), D);
1432 VisitCXXRecordDecl(D);
1434 llvm::PointerUnion<ClassTemplateDecl *,
1435 ClassTemplatePartialSpecializationDecl *> InstFrom
1436 = D->getSpecializedTemplateOrPartial();
1437 if (Decl *InstFromD = InstFrom.dyn_cast<ClassTemplateDecl *>()) {
1438 Record.AddDeclRef(InstFromD);
1440 Record.AddDeclRef(InstFrom.get<ClassTemplatePartialSpecializationDecl *>());
1441 Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs());
1444 Record.AddTemplateArgumentList(&D->getTemplateArgs());
1445 Record.AddSourceLocation(D->getPointOfInstantiation());
1446 Record.push_back(D->getSpecializationKind());
1447 Record.push_back(D->isCanonicalDecl());
1449 if (D->isCanonicalDecl()) {
1450 // When reading, we'll add it to the folding set of the following template.
1451 Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl());
1455 Record.AddTypeSourceInfo(D->getTypeAsWritten());
1456 if (D->getTypeAsWritten()) {
1457 Record.AddSourceLocation(D->getExternLoc());
1458 Record.AddSourceLocation(D->getTemplateKeywordLoc());
1461 Code = serialization::DECL_CLASS_TEMPLATE_SPECIALIZATION;
1464 void ASTDeclWriter::VisitClassTemplatePartialSpecializationDecl(
1465 ClassTemplatePartialSpecializationDecl *D) {
1466 VisitClassTemplateSpecializationDecl(D);
1468 Record.AddTemplateParameterList(D->getTemplateParameters());
1469 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten());
1471 // These are read/set from/to the first declaration.
1472 if (D->getPreviousDecl() == nullptr) {
1473 Record.AddDeclRef(D->getInstantiatedFromMember());
1474 Record.push_back(D->isMemberSpecialization());
1477 Code = serialization::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION;
1480 void ASTDeclWriter::VisitVarTemplateDecl(VarTemplateDecl *D) {
1481 VisitRedeclarableTemplateDecl(D);
1483 if (D->isFirstDecl())
1484 AddTemplateSpecializations(D);
1485 Code = serialization::DECL_VAR_TEMPLATE;
1488 void ASTDeclWriter::VisitVarTemplateSpecializationDecl(
1489 VarTemplateSpecializationDecl *D) {
1490 RegisterTemplateSpecialization(D->getSpecializedTemplate(), D);
1494 llvm::PointerUnion<VarTemplateDecl *, VarTemplatePartialSpecializationDecl *>
1495 InstFrom = D->getSpecializedTemplateOrPartial();
1496 if (Decl *InstFromD = InstFrom.dyn_cast<VarTemplateDecl *>()) {
1497 Record.AddDeclRef(InstFromD);
1499 Record.AddDeclRef(InstFrom.get<VarTemplatePartialSpecializationDecl *>());
1500 Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs());
1504 Record.AddTypeSourceInfo(D->getTypeAsWritten());
1505 if (D->getTypeAsWritten()) {
1506 Record.AddSourceLocation(D->getExternLoc());
1507 Record.AddSourceLocation(D->getTemplateKeywordLoc());
1510 Record.AddTemplateArgumentList(&D->getTemplateArgs());
1511 Record.AddSourceLocation(D->getPointOfInstantiation());
1512 Record.push_back(D->getSpecializationKind());
1513 Record.push_back(D->IsCompleteDefinition);
1514 Record.push_back(D->isCanonicalDecl());
1516 if (D->isCanonicalDecl()) {
1517 // When reading, we'll add it to the folding set of the following template.
1518 Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl());
1521 Code = serialization::DECL_VAR_TEMPLATE_SPECIALIZATION;
1524 void ASTDeclWriter::VisitVarTemplatePartialSpecializationDecl(
1525 VarTemplatePartialSpecializationDecl *D) {
1526 VisitVarTemplateSpecializationDecl(D);
1528 Record.AddTemplateParameterList(D->getTemplateParameters());
1529 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten());
1531 // These are read/set from/to the first declaration.
1532 if (D->getPreviousDecl() == nullptr) {
1533 Record.AddDeclRef(D->getInstantiatedFromMember());
1534 Record.push_back(D->isMemberSpecialization());
1537 Code = serialization::DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION;
1540 void ASTDeclWriter::VisitClassScopeFunctionSpecializationDecl(
1541 ClassScopeFunctionSpecializationDecl *D) {
1543 Record.AddDeclRef(D->getSpecialization());
1544 Code = serialization::DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION;
1548 void ASTDeclWriter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) {
1549 VisitRedeclarableTemplateDecl(D);
1551 if (D->isFirstDecl())
1552 AddTemplateSpecializations(D);
1553 Code = serialization::DECL_FUNCTION_TEMPLATE;
1556 void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) {
1559 Record.push_back(D->wasDeclaredWithTypename());
1561 bool OwnsDefaultArg = D->hasDefaultArgument() &&
1562 !D->defaultArgumentWasInherited();
1563 Record.push_back(OwnsDefaultArg);
1565 Record.AddTypeSourceInfo(D->getDefaultArgumentInfo());
1567 Code = serialization::DECL_TEMPLATE_TYPE_PARM;
1570 void ASTDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) {
1571 // For an expanded parameter pack, record the number of expansion types here
1572 // so that it's easier for deserialization to allocate the right amount of
1574 if (D->isExpandedParameterPack())
1575 Record.push_back(D->getNumExpansionTypes());
1577 VisitDeclaratorDecl(D);
1578 // TemplateParmPosition.
1579 Record.push_back(D->getDepth());
1580 Record.push_back(D->getPosition());
1582 if (D->isExpandedParameterPack()) {
1583 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) {
1584 Record.AddTypeRef(D->getExpansionType(I));
1585 Record.AddTypeSourceInfo(D->getExpansionTypeSourceInfo(I));
1588 Code = serialization::DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK;
1590 // Rest of NonTypeTemplateParmDecl.
1591 Record.push_back(D->isParameterPack());
1592 bool OwnsDefaultArg = D->hasDefaultArgument() &&
1593 !D->defaultArgumentWasInherited();
1594 Record.push_back(OwnsDefaultArg);
1596 Record.AddStmt(D->getDefaultArgument());
1597 Code = serialization::DECL_NON_TYPE_TEMPLATE_PARM;
1601 void ASTDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) {
1602 // For an expanded parameter pack, record the number of expansion types here
1603 // so that it's easier for deserialization to allocate the right amount of
1605 if (D->isExpandedParameterPack())
1606 Record.push_back(D->getNumExpansionTemplateParameters());
1608 VisitTemplateDecl(D);
1609 // TemplateParmPosition.
1610 Record.push_back(D->getDepth());
1611 Record.push_back(D->getPosition());
1613 if (D->isExpandedParameterPack()) {
1614 for (unsigned I = 0, N = D->getNumExpansionTemplateParameters();
1616 Record.AddTemplateParameterList(D->getExpansionTemplateParameters(I));
1617 Code = serialization::DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK;
1619 // Rest of TemplateTemplateParmDecl.
1620 Record.push_back(D->isParameterPack());
1621 bool OwnsDefaultArg = D->hasDefaultArgument() &&
1622 !D->defaultArgumentWasInherited();
1623 Record.push_back(OwnsDefaultArg);
1625 Record.AddTemplateArgumentLoc(D->getDefaultArgument());
1626 Code = serialization::DECL_TEMPLATE_TEMPLATE_PARM;
1630 void ASTDeclWriter::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) {
1631 VisitRedeclarableTemplateDecl(D);
1632 Code = serialization::DECL_TYPE_ALIAS_TEMPLATE;
1635 void ASTDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) {
1637 Record.AddStmt(D->getAssertExpr());
1638 Record.push_back(D->isFailed());
1639 Record.AddStmt(D->getMessage());
1640 Record.AddSourceLocation(D->getRParenLoc());
1641 Code = serialization::DECL_STATIC_ASSERT;
1644 /// Emit the DeclContext part of a declaration context decl.
1645 void ASTDeclWriter::VisitDeclContext(DeclContext *DC) {
1646 Record.AddOffset(Writer.WriteDeclContextLexicalBlock(Context, DC));
1647 Record.AddOffset(Writer.WriteDeclContextVisibleBlock(Context, DC));
1650 const Decl *ASTWriter::getFirstLocalDecl(const Decl *D) {
1651 assert(IsLocalDecl(D) && "expected a local declaration");
1653 const Decl *Canon = D->getCanonicalDecl();
1654 if (IsLocalDecl(Canon))
1657 const Decl *&CacheEntry = FirstLocalDeclCache[Canon];
1661 for (const Decl *Redecl = D; Redecl; Redecl = Redecl->getPreviousDecl())
1662 if (IsLocalDecl(Redecl))
1664 return CacheEntry = D;
1667 template <typename T>
1668 void ASTDeclWriter::VisitRedeclarable(Redeclarable<T> *D) {
1669 T *First = D->getFirstDecl();
1670 T *MostRecent = First->getMostRecentDecl();
1671 T *DAsT = static_cast<T *>(D);
1672 if (MostRecent != First) {
1673 assert(isRedeclarableDeclKind(DAsT->getKind()) &&
1674 "Not considered redeclarable?");
1676 Record.AddDeclRef(First);
1678 // Write out a list of local redeclarations of this declaration if it's the
1679 // first local declaration in the chain.
1680 const Decl *FirstLocal = Writer.getFirstLocalDecl(DAsT);
1681 if (DAsT == FirstLocal) {
1682 // Emit a list of all imported first declarations so that we can be sure
1683 // that all redeclarations visible to this module are before D in the
1685 unsigned I = Record.size();
1686 Record.push_back(0);
1688 AddFirstDeclFromEachModule(DAsT, /*IncludeLocal*/false);
1689 // This is the number of imported first declarations + 1.
1690 Record[I] = Record.size() - I;
1692 // Collect the set of local redeclarations of this declaration, from
1693 // newest to oldest.
1694 ASTWriter::RecordData LocalRedecls;
1695 ASTRecordWriter LocalRedeclWriter(Record, LocalRedecls);
1696 for (const Decl *Prev = FirstLocal->getMostRecentDecl();
1697 Prev != FirstLocal; Prev = Prev->getPreviousDecl())
1698 if (!Prev->isFromASTFile())
1699 LocalRedeclWriter.AddDeclRef(Prev);
1701 // If we have any redecls, write them now as a separate record preceding
1702 // the declaration itself.
1703 if (LocalRedecls.empty())
1704 Record.push_back(0);
1706 Record.AddOffset(LocalRedeclWriter.Emit(LOCAL_REDECLARATIONS));
1708 Record.push_back(0);
1709 Record.AddDeclRef(FirstLocal);
1712 // Make sure that we serialize both the previous and the most-recent
1713 // declarations, which (transitively) ensures that all declarations in the
1714 // chain get serialized.
1716 // FIXME: This is not correct; when we reach an imported declaration we
1717 // won't emit its previous declaration.
1718 (void)Writer.GetDeclRef(D->getPreviousDecl());
1719 (void)Writer.GetDeclRef(MostRecent);
1721 // We use the sentinel value 0 to indicate an only declaration.
1722 Record.push_back(0);
1726 void ASTDeclWriter::VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D) {
1727 Record.push_back(D->varlist_size());
1729 for (auto *I : D->varlists())
1731 Code = serialization::DECL_OMP_THREADPRIVATE;
1734 void ASTDeclWriter::VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D) {
1736 Record.AddSourceLocation(D->getLocStart());
1737 Record.AddStmt(D->getCombiner());
1738 Record.AddStmt(D->getInitializer());
1739 Record.push_back(D->getInitializerKind());
1740 Record.AddDeclRef(D->getPrevDeclInScope());
1741 Code = serialization::DECL_OMP_DECLARE_REDUCTION;
1744 void ASTDeclWriter::VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D) {
1746 Code = serialization::DECL_OMP_CAPTUREDEXPR;
1749 //===----------------------------------------------------------------------===//
1750 // ASTWriter Implementation
1751 //===----------------------------------------------------------------------===//
1753 void ASTWriter::WriteDeclAbbrevs() {
1754 using namespace llvm;
1756 std::shared_ptr<BitCodeAbbrev> Abv;
1758 // Abbreviation for DECL_FIELD
1759 Abv = std::make_shared<BitCodeAbbrev>();
1760 Abv->Add(BitCodeAbbrevOp(serialization::DECL_FIELD));
1762 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1763 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
1764 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1765 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1766 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1767 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1768 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1769 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1770 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier
1771 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1772 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1774 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1775 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1776 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
1778 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
1780 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc
1781 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
1782 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType
1784 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable
1785 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle
1787 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
1788 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
1789 DeclFieldAbbrev = Stream.EmitAbbrev(std::move(Abv));
1791 // Abbreviation for DECL_OBJC_IVAR
1792 Abv = std::make_shared<BitCodeAbbrev>();
1793 Abv->Add(BitCodeAbbrevOp(serialization::DECL_OBJC_IVAR));
1795 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1796 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
1797 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1798 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1799 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1800 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1801 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1802 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1803 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier
1804 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1805 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1807 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1808 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1809 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
1811 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
1813 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc
1814 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
1815 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType
1817 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable
1818 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle
1820 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getAccessControl
1821 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getSynthesize
1823 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
1824 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
1825 DeclObjCIvarAbbrev = Stream.EmitAbbrev(std::move(Abv));
1827 // Abbreviation for DECL_ENUM
1828 Abv = std::make_shared<BitCodeAbbrev>();
1829 Abv->Add(BitCodeAbbrevOp(serialization::DECL_ENUM));
1831 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
1833 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1834 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
1835 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1836 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1837 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1838 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1839 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1840 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1841 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
1842 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1843 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1845 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1846 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1847 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
1849 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
1850 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref
1852 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace
1853 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind
1854 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition
1855 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator
1856 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding
1857 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired
1858 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
1859 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
1860 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind
1862 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // AddTypeRef
1863 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IntegerType
1864 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getPromotionType
1865 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumPositiveBits
1866 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumNegativeBits
1867 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScoped
1868 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScopedUsingClassTag
1869 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isFixed
1870 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));// ODRHash
1871 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InstantiatedMembEnum
1873 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset
1874 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset
1875 DeclEnumAbbrev = Stream.EmitAbbrev(std::move(Abv));
1877 // Abbreviation for DECL_RECORD
1878 Abv = std::make_shared<BitCodeAbbrev>();
1879 Abv->Add(BitCodeAbbrevOp(serialization::DECL_RECORD));
1881 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
1883 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1884 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
1885 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1886 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1887 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1888 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1889 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1890 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1891 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
1892 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1893 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1895 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1896 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1897 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
1899 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
1900 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref
1902 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace
1903 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind
1904 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition
1905 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator
1906 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding
1907 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired
1908 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
1909 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
1910 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind
1912 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // FlexibleArrayMember
1913 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // AnonymousStructUnion
1914 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasObjectMember
1915 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasVolatileMember
1917 // isNonTrivialToPrimitiveDefaultInitialize
1918 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
1919 // isNonTrivialToPrimitiveCopy
1920 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
1921 // isNonTrivialToPrimitiveDestroy
1922 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
1923 // isParamDestroyedInCallee
1924 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
1925 // getArgPassingRestrictions
1926 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2));
1929 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset
1930 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset
1931 DeclRecordAbbrev = Stream.EmitAbbrev(std::move(Abv));
1933 // Abbreviation for DECL_PARM_VAR
1934 Abv = std::make_shared<BitCodeAbbrev>();
1935 Abv->Add(BitCodeAbbrevOp(serialization::DECL_PARM_VAR));
1937 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
1939 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1940 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
1941 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1942 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1943 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1944 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1945 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1946 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1947 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
1948 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1949 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1951 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1952 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1953 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
1955 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
1957 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc
1958 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
1959 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType
1961 Abv->Add(BitCodeAbbrevOp(0)); // SClass
1962 Abv->Add(BitCodeAbbrevOp(0)); // TSCSpec
1963 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle
1964 Abv->Add(BitCodeAbbrevOp(0)); // Linkage
1965 Abv->Add(BitCodeAbbrevOp(0)); // HasInit
1966 Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo
1968 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsObjCMethodParameter
1969 Abv->Add(BitCodeAbbrevOp(0)); // ScopeDepth
1970 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ScopeIndex
1971 Abv->Add(BitCodeAbbrevOp(0)); // ObjCDeclQualifier
1972 Abv->Add(BitCodeAbbrevOp(0)); // KNRPromoted
1973 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedDefaultArg
1974 Abv->Add(BitCodeAbbrevOp(0)); // HasUninstantiatedDefaultArg
1976 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
1977 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
1978 DeclParmVarAbbrev = Stream.EmitAbbrev(std::move(Abv));
1980 // Abbreviation for DECL_TYPEDEF
1981 Abv = std::make_shared<BitCodeAbbrev>();
1982 Abv->Add(BitCodeAbbrevOp(serialization::DECL_TYPEDEF));
1984 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
1986 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1987 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
1988 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1989 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1990 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1991 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isUsed
1992 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isReferenced
1993 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1994 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // C++ AccessSpecifier
1995 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1996 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1998 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1999 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
2000 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
2002 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
2003 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref
2005 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
2006 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
2007 DeclTypedefAbbrev = Stream.EmitAbbrev(std::move(Abv));
2009 // Abbreviation for DECL_VAR
2010 Abv = std::make_shared<BitCodeAbbrev>();
2011 Abv->Add(BitCodeAbbrevOp(serialization::DECL_VAR));
2013 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
2015 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
2016 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
2017 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
2018 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
2019 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
2020 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
2021 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
2022 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
2023 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
2024 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
2025 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
2027 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
2028 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
2029 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
2031 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2033 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc
2034 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
2035 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType
2037 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // SClass
2038 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // TSCSpec
2039 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // InitStyle
2040 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsThisDeclarationADemotedDefinition
2041 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isExceptionVariable
2042 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isNRVOVariable
2043 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCXXForRangeDecl
2044 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isObjCForDecl
2045 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isARCPseudoStrong
2046 Abv->Add(BitCodeAbbrevOp(0)); // isInline
2047 Abv->Add(BitCodeAbbrevOp(0)); // isInlineSpecified
2048 Abv->Add(BitCodeAbbrevOp(0)); // isConstexpr
2049 Abv->Add(BitCodeAbbrevOp(0)); // isInitCapture
2050 Abv->Add(BitCodeAbbrevOp(0)); // isPrevDeclInSameScope
2051 Abv->Add(BitCodeAbbrevOp(0)); // ImplicitParamKind
2052 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage
2053 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // IsInitICE (local)
2054 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // VarKind (local enum)
2056 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
2057 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
2058 DeclVarAbbrev = Stream.EmitAbbrev(std::move(Abv));
2060 // Abbreviation for DECL_CXX_METHOD
2061 Abv = std::make_shared<BitCodeAbbrev>();
2062 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CXX_METHOD));
2064 Abv->Add(BitCodeAbbrevOp(0)); // CanonicalDecl
2066 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
2067 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
2068 Abv->Add(BitCodeAbbrevOp(0)); // Invalid
2069 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
2070 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Implicit
2071 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Used
2072 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Referenced
2073 Abv->Add(BitCodeAbbrevOp(0)); // InObjCContainer
2074 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Access
2075 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModulePrivate
2076 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
2078 Abv->Add(BitCodeAbbrevOp(DeclarationName::Identifier)); // NameKind
2079 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Identifier
2080 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
2082 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2084 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerLocStart
2085 Abv->Add(BitCodeAbbrevOp(0)); // HasExtInfo
2086 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType
2088 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 11)); // IDNS
2089 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // StorageClass
2090 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Inline
2091 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InlineSpecified
2092 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ExplicitSpecified
2093 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // VirtualAsWritten
2094 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Pure
2095 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedProto
2096 Abv->Add(BitCodeAbbrevOp(1)); // HasWrittenProto
2097 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Deleted
2098 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Trivial
2099 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // TrivialForCall
2100 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Defaulted
2101 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ExplicitlyDefaulted
2102 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ImplicitReturnZero
2103 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Constexpr
2104 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // UsesSEHTry
2105 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // SkippedBody
2106 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // MultiVersion
2107 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // LateParsed
2108 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage
2109 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LocEnd
2110 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // ODRHash
2111 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // TemplateKind
2112 // This Array slurps the rest of the record. Fortunately we want to encode
2113 // (nearly) all the remaining (variable number of) fields in the same way.
2115 // This is the function template information if any, then
2116 // NumParams and Params[] from FunctionDecl, and
2117 // NumOverriddenMethods, OverriddenMethods[] from CXXMethodDecl.
2119 // Add an AbbrevOp for 'size then elements' and use it here.
2120 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
2121 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6));
2122 DeclCXXMethodAbbrev = Stream.EmitAbbrev(std::move(Abv));
2124 // Abbreviation for EXPR_DECL_REF
2125 Abv = std::make_shared<BitCodeAbbrev>();
2126 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_DECL_REF));
2129 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2130 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent
2131 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent
2132 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent
2133 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack
2134 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind
2135 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind
2137 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HasQualifier
2138 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //GetDeclFound
2139 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ExplicitTemplateArgs
2140 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HadMultipleCandidates
2141 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed,
2142 1)); // RefersToEnclosingVariableOrCapture
2143 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclRef
2144 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location
2145 DeclRefExprAbbrev = Stream.EmitAbbrev(std::move(Abv));
2147 // Abbreviation for EXPR_INTEGER_LITERAL
2148 Abv = std::make_shared<BitCodeAbbrev>();
2149 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_INTEGER_LITERAL));
2152 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2153 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent
2154 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent
2155 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent
2156 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack
2157 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind
2158 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind
2160 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location
2161 Abv->Add(BitCodeAbbrevOp(32)); // Bit Width
2162 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Value
2163 IntegerLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv));
2165 // Abbreviation for EXPR_CHARACTER_LITERAL
2166 Abv = std::make_shared<BitCodeAbbrev>();
2167 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CHARACTER_LITERAL));
2170 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2171 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent
2172 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent
2173 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent
2174 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack
2175 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind
2176 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind
2178 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getValue
2179 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location
2180 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // getKind
2181 CharacterLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv));
2183 // Abbreviation for EXPR_IMPLICIT_CAST
2184 Abv = std::make_shared<BitCodeAbbrev>();
2185 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_IMPLICIT_CAST));
2188 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2189 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent
2190 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent
2191 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent
2192 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack
2193 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind
2194 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind
2196 Abv->Add(BitCodeAbbrevOp(0)); // PathSize
2197 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 6)); // CastKind
2198 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // PartOfExplicitCast
2200 ExprImplicitCastAbbrev = Stream.EmitAbbrev(std::move(Abv));
2202 Abv = std::make_shared<BitCodeAbbrev>();
2203 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_LEXICAL));
2204 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2205 DeclContextLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv));
2207 Abv = std::make_shared<BitCodeAbbrev>();
2208 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_VISIBLE));
2209 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2210 DeclContextVisibleLookupAbbrev = Stream.EmitAbbrev(std::move(Abv));
2213 /// isRequiredDecl - Check if this is a "required" Decl, which must be seen by
2214 /// consumers of the AST.
2216 /// Such decls will always be deserialized from the AST file, so we would like
2217 /// this to be as restrictive as possible. Currently the predicate is driven by
2218 /// code generation requirements, if other clients have a different notion of
2219 /// what is "required" then we may have to consider an alternate scheme where
2220 /// clients can iterate over the top-level decls and get information on them,
2221 /// without necessary deserializing them. We could explicitly require such
2222 /// clients to use a separate API call to "realize" the decl. This should be
2223 /// relatively painless since they would presumably only do it for top-level
2225 static bool isRequiredDecl(const Decl *D, ASTContext &Context,
2226 bool WritingModule) {
2227 // An ObjCMethodDecl is never considered as "required" because its
2228 // implementation container always is.
2230 // File scoped assembly or obj-c or OMP declare target implementation must be
2232 if (isa<FileScopeAsmDecl>(D) || isa<ObjCImplDecl>(D) ||
2233 D->hasAttr<OMPDeclareTargetDeclAttr>())
2236 if (WritingModule && (isa<VarDecl>(D) || isa<ImportDecl>(D))) {
2237 // These declarations are part of the module initializer, and are emitted
2238 // if and when the module is imported, rather than being emitted eagerly.
2242 return Context.DeclMustBeEmitted(D);
2245 void ASTWriter::WriteDecl(ASTContext &Context, Decl *D) {
2246 PrettyDeclStackTraceEntry CrashInfo(Context, D, SourceLocation(),
2249 // Determine the ID for this declaration.
2250 serialization::DeclID ID;
2251 assert(!D->isFromASTFile() && "should not be emitting imported decl");
2252 serialization::DeclID &IDR = DeclIDs[D];
2258 assert(ID >= FirstDeclID && "invalid decl ID");
2261 ASTDeclWriter W(*this, Context, Record);
2263 // Build a record for this declaration
2266 // Emit this declaration to the bitstream.
2267 uint64_t Offset = W.Emit(D);
2269 // Record the offset for this declaration
2270 SourceLocation Loc = D->getLocation();
2271 unsigned Index = ID - FirstDeclID;
2272 if (DeclOffsets.size() == Index)
2273 DeclOffsets.push_back(DeclOffset(Loc, Offset));
2274 else if (DeclOffsets.size() < Index) {
2275 // FIXME: Can/should this happen?
2276 DeclOffsets.resize(Index+1);
2277 DeclOffsets[Index].setLocation(Loc);
2278 DeclOffsets[Index].BitOffset = Offset;
2280 llvm_unreachable("declarations should be emitted in ID order");
2283 SourceManager &SM = Context.getSourceManager();
2284 if (Loc.isValid() && SM.isLocalSourceLocation(Loc))
2285 associateDeclWithFile(D, ID);
2287 // Note declarations that should be deserialized eagerly so that we can add
2288 // them to a record in the AST file later.
2289 if (isRequiredDecl(D, Context, WritingModule))
2290 EagerlyDeserializedDecls.push_back(ID);
2293 void ASTRecordWriter::AddFunctionDefinition(const FunctionDecl *FD) {
2294 // Switch case IDs are per function body.
2295 Writer->ClearSwitchCaseIDs();
2297 assert(FD->doesThisDeclarationHaveABody());
2298 bool ModulesCodegen = false;
2299 if (Writer->WritingModule && !FD->isDependentContext()) {
2300 Optional<GVALinkage> Linkage;
2301 if (Writer->WritingModule->Kind == Module::ModuleInterfaceUnit) {
2302 // When building a C++ Modules TS module interface unit, a strong
2303 // definition in the module interface is provided by the compilation of
2304 // that module interface unit, not by its users. (Inline functions are
2305 // still emitted in module users.)
2306 Linkage = Writer->Context->GetGVALinkageForFunction(FD);
2307 ModulesCodegen = *Linkage == GVA_StrongExternal;
2309 if (Writer->Context->getLangOpts().ModulesCodegen) {
2310 // Under -fmodules-codegen, codegen is performed for all non-internal,
2311 // non-always_inline functions.
2312 if (!FD->hasAttr<AlwaysInlineAttr>()) {
2314 Linkage = Writer->Context->GetGVALinkageForFunction(FD);
2315 ModulesCodegen = *Linkage != GVA_Internal;
2319 Record->push_back(ModulesCodegen);
2321 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(FD));
2322 if (auto *CD = dyn_cast<CXXConstructorDecl>(FD)) {
2323 Record->push_back(CD->getNumCtorInitializers());
2324 if (CD->getNumCtorInitializers())
2325 AddCXXCtorInitializers(
2326 llvm::makeArrayRef(CD->init_begin(), CD->init_end()));
2328 AddStmt(FD->getBody());