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 VisitUnresolvedUsingIfExistsDecl(UnresolvedUsingIfExistsDecl *D);
72 void VisitTagDecl(TagDecl *D);
73 void VisitEnumDecl(EnumDecl *D);
74 void VisitRecordDecl(RecordDecl *D);
75 void VisitCXXRecordDecl(CXXRecordDecl *D);
76 void VisitClassTemplateSpecializationDecl(
77 ClassTemplateSpecializationDecl *D);
78 void VisitClassTemplatePartialSpecializationDecl(
79 ClassTemplatePartialSpecializationDecl *D);
80 void VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl *D);
81 void VisitVarTemplatePartialSpecializationDecl(
82 VarTemplatePartialSpecializationDecl *D);
83 void VisitClassScopeFunctionSpecializationDecl(
84 ClassScopeFunctionSpecializationDecl *D);
85 void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D);
86 void VisitValueDecl(ValueDecl *D);
87 void VisitEnumConstantDecl(EnumConstantDecl *D);
88 void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D);
89 void VisitDeclaratorDecl(DeclaratorDecl *D);
90 void VisitFunctionDecl(FunctionDecl *D);
91 void VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D);
92 void VisitCXXMethodDecl(CXXMethodDecl *D);
93 void VisitCXXConstructorDecl(CXXConstructorDecl *D);
94 void VisitCXXDestructorDecl(CXXDestructorDecl *D);
95 void VisitCXXConversionDecl(CXXConversionDecl *D);
96 void VisitFieldDecl(FieldDecl *D);
97 void VisitMSPropertyDecl(MSPropertyDecl *D);
98 void VisitMSGuidDecl(MSGuidDecl *D);
99 void VisitTemplateParamObjectDecl(TemplateParamObjectDecl *D);
100 void VisitIndirectFieldDecl(IndirectFieldDecl *D);
101 void VisitVarDecl(VarDecl *D);
102 void VisitImplicitParamDecl(ImplicitParamDecl *D);
103 void VisitParmVarDecl(ParmVarDecl *D);
104 void VisitDecompositionDecl(DecompositionDecl *D);
105 void VisitBindingDecl(BindingDecl *D);
106 void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D);
107 void VisitTemplateDecl(TemplateDecl *D);
108 void VisitConceptDecl(ConceptDecl *D);
109 void VisitRequiresExprBodyDecl(RequiresExprBodyDecl *D);
110 void VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D);
111 void VisitClassTemplateDecl(ClassTemplateDecl *D);
112 void VisitVarTemplateDecl(VarTemplateDecl *D);
113 void VisitFunctionTemplateDecl(FunctionTemplateDecl *D);
114 void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
115 void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D);
116 void VisitUsingDecl(UsingDecl *D);
117 void VisitUsingEnumDecl(UsingEnumDecl *D);
118 void VisitUsingPackDecl(UsingPackDecl *D);
119 void VisitUsingShadowDecl(UsingShadowDecl *D);
120 void VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl *D);
121 void VisitLinkageSpecDecl(LinkageSpecDecl *D);
122 void VisitExportDecl(ExportDecl *D);
123 void VisitFileScopeAsmDecl(FileScopeAsmDecl *D);
124 void VisitImportDecl(ImportDecl *D);
125 void VisitAccessSpecDecl(AccessSpecDecl *D);
126 void VisitFriendDecl(FriendDecl *D);
127 void VisitFriendTemplateDecl(FriendTemplateDecl *D);
128 void VisitStaticAssertDecl(StaticAssertDecl *D);
129 void VisitBlockDecl(BlockDecl *D);
130 void VisitCapturedDecl(CapturedDecl *D);
131 void VisitEmptyDecl(EmptyDecl *D);
132 void VisitLifetimeExtendedTemporaryDecl(LifetimeExtendedTemporaryDecl *D);
133
134 void VisitDeclContext(DeclContext *DC);
135 template <typename T> void VisitRedeclarable(Redeclarable<T> *D);
136
137
138 // FIXME: Put in the same order is DeclNodes.td?
139 void VisitObjCMethodDecl(ObjCMethodDecl *D);
140 void VisitObjCTypeParamDecl(ObjCTypeParamDecl *D);
141 void VisitObjCContainerDecl(ObjCContainerDecl *D);
142 void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
143 void VisitObjCIvarDecl(ObjCIvarDecl *D);
144 void VisitObjCProtocolDecl(ObjCProtocolDecl *D);
145 void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D);
146 void VisitObjCCategoryDecl(ObjCCategoryDecl *D);
147 void VisitObjCImplDecl(ObjCImplDecl *D);
148 void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
149 void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
150 void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
151 void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
152 void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
153 void VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D);
154 void VisitOMPAllocateDecl(OMPAllocateDecl *D);
155 void VisitOMPRequiresDecl(OMPRequiresDecl *D);
156 void VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D);
157 void VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D);
158 void VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D);
159
160 /// Add an Objective-C type parameter list to the given record.
AddObjCTypeParamList(ObjCTypeParamList * typeParams)161 void AddObjCTypeParamList(ObjCTypeParamList *typeParams) {
162 // Empty type parameter list.
163 if (!typeParams) {
164 Record.push_back(0);
165 return;
166 }
167
168 Record.push_back(typeParams->size());
169 for (auto typeParam : *typeParams) {
170 Record.AddDeclRef(typeParam);
171 }
172 Record.AddSourceLocation(typeParams->getLAngleLoc());
173 Record.AddSourceLocation(typeParams->getRAngleLoc());
174 }
175
176 /// Add to the record the first declaration from each module file that
177 /// provides a declaration of D. The intent is to provide a sufficient
178 /// set such that reloading this set will load all current redeclarations.
AddFirstDeclFromEachModule(const Decl * D,bool IncludeLocal)179 void AddFirstDeclFromEachModule(const Decl *D, bool IncludeLocal) {
180 llvm::MapVector<ModuleFile*, const Decl*> Firsts;
181 // FIXME: We can skip entries that we know are implied by others.
182 for (const Decl *R = D->getMostRecentDecl(); R; R = R->getPreviousDecl()) {
183 if (R->isFromASTFile())
184 Firsts[Writer.Chain->getOwningModuleFile(R)] = R;
185 else if (IncludeLocal)
186 Firsts[nullptr] = R;
187 }
188 for (const auto &F : Firsts)
189 Record.AddDeclRef(F.second);
190 }
191
192 /// Get the specialization decl from an entry in the specialization list.
193 template <typename EntryType>
194 typename RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::DeclType *
getSpecializationDecl(EntryType & T)195 getSpecializationDecl(EntryType &T) {
196 return RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::getDecl(&T);
197 }
198
199 /// Get the list of partial specializations from a template's common ptr.
200 template<typename T>
getPartialSpecializations(T * Common)201 decltype(T::PartialSpecializations) &getPartialSpecializations(T *Common) {
202 return Common->PartialSpecializations;
203 }
getPartialSpecializations(FunctionTemplateDecl::Common *)204 ArrayRef<Decl> getPartialSpecializations(FunctionTemplateDecl::Common *) {
205 return None;
206 }
207
208 template<typename DeclTy>
AddTemplateSpecializations(DeclTy * D)209 void AddTemplateSpecializations(DeclTy *D) {
210 auto *Common = D->getCommonPtr();
211
212 // If we have any lazy specializations, and the external AST source is
213 // our chained AST reader, we can just write out the DeclIDs. Otherwise,
214 // we need to resolve them to actual declarations.
215 if (Writer.Chain != Writer.Context->getExternalSource() &&
216 Common->LazySpecializations) {
217 D->LoadLazySpecializations();
218 assert(!Common->LazySpecializations);
219 }
220
221 ArrayRef<DeclID> LazySpecializations;
222 if (auto *LS = Common->LazySpecializations)
223 LazySpecializations = llvm::makeArrayRef(LS + 1, LS[0]);
224
225 // Add a slot to the record for the number of specializations.
226 unsigned I = Record.size();
227 Record.push_back(0);
228
229 // AddFirstDeclFromEachModule might trigger deserialization, invalidating
230 // *Specializations iterators.
231 llvm::SmallVector<const Decl*, 16> Specs;
232 for (auto &Entry : Common->Specializations)
233 Specs.push_back(getSpecializationDecl(Entry));
234 for (auto &Entry : getPartialSpecializations(Common))
235 Specs.push_back(getSpecializationDecl(Entry));
236
237 for (auto *D : Specs) {
238 assert(D->isCanonicalDecl() && "non-canonical decl in set");
239 AddFirstDeclFromEachModule(D, /*IncludeLocal*/true);
240 }
241 Record.append(LazySpecializations.begin(), LazySpecializations.end());
242
243 // Update the size entry we added earlier.
244 Record[I] = Record.size() - I - 1;
245 }
246
247 /// Ensure that this template specialization is associated with the specified
248 /// template on reload.
RegisterTemplateSpecialization(const Decl * Template,const Decl * Specialization)249 void RegisterTemplateSpecialization(const Decl *Template,
250 const Decl *Specialization) {
251 Template = Template->getCanonicalDecl();
252
253 // If the canonical template is local, we'll write out this specialization
254 // when we emit it.
255 // FIXME: We can do the same thing if there is any local declaration of
256 // the template, to avoid emitting an update record.
257 if (!Template->isFromASTFile())
258 return;
259
260 // We only need to associate the first local declaration of the
261 // specialization. The other declarations will get pulled in by it.
262 if (Writer.getFirstLocalDecl(Specialization) != Specialization)
263 return;
264
265 Writer.DeclUpdates[Template].push_back(ASTWriter::DeclUpdate(
266 UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION, Specialization));
267 }
268 };
269 }
270
Visit(Decl * D)271 void ASTDeclWriter::Visit(Decl *D) {
272 DeclVisitor<ASTDeclWriter>::Visit(D);
273
274 // Source locations require array (variable-length) abbreviations. The
275 // abbreviation infrastructure requires that arrays are encoded last, so
276 // we handle it here in the case of those classes derived from DeclaratorDecl
277 if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)) {
278 if (auto *TInfo = DD->getTypeSourceInfo())
279 Record.AddTypeLoc(TInfo->getTypeLoc());
280 }
281
282 // Handle FunctionDecl's body here and write it after all other Stmts/Exprs
283 // have been written. We want it last because we will not read it back when
284 // retrieving it from the AST, we'll just lazily set the offset.
285 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
286 Record.push_back(FD->doesThisDeclarationHaveABody());
287 if (FD->doesThisDeclarationHaveABody())
288 Record.AddFunctionDefinition(FD);
289 }
290
291 // If this declaration is also a DeclContext, write blocks for the
292 // declarations that lexically stored inside its context and those
293 // declarations that are visible from its context.
294 if (DeclContext *DC = dyn_cast<DeclContext>(D))
295 VisitDeclContext(DC);
296 }
297
VisitDecl(Decl * D)298 void ASTDeclWriter::VisitDecl(Decl *D) {
299 Record.AddDeclRef(cast_or_null<Decl>(D->getDeclContext()));
300 if (D->getDeclContext() != D->getLexicalDeclContext())
301 Record.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext()));
302 else
303 Record.push_back(0);
304 Record.push_back(D->isInvalidDecl());
305 Record.push_back(D->hasAttrs());
306 if (D->hasAttrs())
307 Record.AddAttributes(D->getAttrs());
308 Record.push_back(D->isImplicit());
309 Record.push_back(D->isUsed(false));
310 Record.push_back(D->isReferenced());
311 Record.push_back(D->isTopLevelDeclInObjCContainer());
312 Record.push_back(D->getAccess());
313 Record.push_back(D->isModulePrivate());
314 Record.push_back(Writer.getSubmoduleID(D->getOwningModule()));
315
316 // If this declaration injected a name into a context different from its
317 // lexical context, and that context is an imported namespace, we need to
318 // update its visible declarations to include this name.
319 //
320 // This happens when we instantiate a class with a friend declaration or a
321 // function with a local extern declaration, for instance.
322 //
323 // FIXME: Can we handle this in AddedVisibleDecl instead?
324 if (D->isOutOfLine()) {
325 auto *DC = D->getDeclContext();
326 while (auto *NS = dyn_cast<NamespaceDecl>(DC->getRedeclContext())) {
327 if (!NS->isFromASTFile())
328 break;
329 Writer.UpdatedDeclContexts.insert(NS->getPrimaryContext());
330 if (!NS->isInlineNamespace())
331 break;
332 DC = NS->getParent();
333 }
334 }
335 }
336
VisitPragmaCommentDecl(PragmaCommentDecl * D)337 void ASTDeclWriter::VisitPragmaCommentDecl(PragmaCommentDecl *D) {
338 StringRef Arg = D->getArg();
339 Record.push_back(Arg.size());
340 VisitDecl(D);
341 Record.AddSourceLocation(D->getBeginLoc());
342 Record.push_back(D->getCommentKind());
343 Record.AddString(Arg);
344 Code = serialization::DECL_PRAGMA_COMMENT;
345 }
346
VisitPragmaDetectMismatchDecl(PragmaDetectMismatchDecl * D)347 void ASTDeclWriter::VisitPragmaDetectMismatchDecl(
348 PragmaDetectMismatchDecl *D) {
349 StringRef Name = D->getName();
350 StringRef Value = D->getValue();
351 Record.push_back(Name.size() + 1 + Value.size());
352 VisitDecl(D);
353 Record.AddSourceLocation(D->getBeginLoc());
354 Record.AddString(Name);
355 Record.AddString(Value);
356 Code = serialization::DECL_PRAGMA_DETECT_MISMATCH;
357 }
358
VisitTranslationUnitDecl(TranslationUnitDecl * D)359 void ASTDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) {
360 llvm_unreachable("Translation units aren't directly serialized");
361 }
362
VisitNamedDecl(NamedDecl * D)363 void ASTDeclWriter::VisitNamedDecl(NamedDecl *D) {
364 VisitDecl(D);
365 Record.AddDeclarationName(D->getDeclName());
366 Record.push_back(needsAnonymousDeclarationNumber(D)
367 ? Writer.getAnonymousDeclarationNumber(D)
368 : 0);
369 }
370
VisitTypeDecl(TypeDecl * D)371 void ASTDeclWriter::VisitTypeDecl(TypeDecl *D) {
372 VisitNamedDecl(D);
373 Record.AddSourceLocation(D->getBeginLoc());
374 Record.AddTypeRef(QualType(D->getTypeForDecl(), 0));
375 }
376
VisitTypedefNameDecl(TypedefNameDecl * D)377 void ASTDeclWriter::VisitTypedefNameDecl(TypedefNameDecl *D) {
378 VisitRedeclarable(D);
379 VisitTypeDecl(D);
380 Record.AddTypeSourceInfo(D->getTypeSourceInfo());
381 Record.push_back(D->isModed());
382 if (D->isModed())
383 Record.AddTypeRef(D->getUnderlyingType());
384 Record.AddDeclRef(D->getAnonDeclWithTypedefName(false));
385 }
386
VisitTypedefDecl(TypedefDecl * D)387 void ASTDeclWriter::VisitTypedefDecl(TypedefDecl *D) {
388 VisitTypedefNameDecl(D);
389 if (D->getDeclContext() == D->getLexicalDeclContext() &&
390 !D->hasAttrs() &&
391 !D->isImplicit() &&
392 D->getFirstDecl() == D->getMostRecentDecl() &&
393 !D->isInvalidDecl() &&
394 !D->isTopLevelDeclInObjCContainer() &&
395 !D->isModulePrivate() &&
396 !needsAnonymousDeclarationNumber(D) &&
397 D->getDeclName().getNameKind() == DeclarationName::Identifier)
398 AbbrevToUse = Writer.getDeclTypedefAbbrev();
399
400 Code = serialization::DECL_TYPEDEF;
401 }
402
VisitTypeAliasDecl(TypeAliasDecl * D)403 void ASTDeclWriter::VisitTypeAliasDecl(TypeAliasDecl *D) {
404 VisitTypedefNameDecl(D);
405 Record.AddDeclRef(D->getDescribedAliasTemplate());
406 Code = serialization::DECL_TYPEALIAS;
407 }
408
VisitTagDecl(TagDecl * D)409 void ASTDeclWriter::VisitTagDecl(TagDecl *D) {
410 VisitRedeclarable(D);
411 VisitTypeDecl(D);
412 Record.push_back(D->getIdentifierNamespace());
413 Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding
414 if (!isa<CXXRecordDecl>(D))
415 Record.push_back(D->isCompleteDefinition());
416 Record.push_back(D->isEmbeddedInDeclarator());
417 Record.push_back(D->isFreeStanding());
418 Record.push_back(D->isCompleteDefinitionRequired());
419 Record.AddSourceRange(D->getBraceRange());
420
421 if (D->hasExtInfo()) {
422 Record.push_back(1);
423 Record.AddQualifierInfo(*D->getExtInfo());
424 } else if (auto *TD = D->getTypedefNameForAnonDecl()) {
425 Record.push_back(2);
426 Record.AddDeclRef(TD);
427 Record.AddIdentifierRef(TD->getDeclName().getAsIdentifierInfo());
428 } else {
429 Record.push_back(0);
430 }
431 }
432
VisitEnumDecl(EnumDecl * D)433 void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) {
434 VisitTagDecl(D);
435 Record.AddTypeSourceInfo(D->getIntegerTypeSourceInfo());
436 if (!D->getIntegerTypeSourceInfo())
437 Record.AddTypeRef(D->getIntegerType());
438 Record.AddTypeRef(D->getPromotionType());
439 Record.push_back(D->getNumPositiveBits());
440 Record.push_back(D->getNumNegativeBits());
441 Record.push_back(D->isScoped());
442 Record.push_back(D->isScopedUsingClassTag());
443 Record.push_back(D->isFixed());
444 Record.push_back(D->getODRHash());
445
446 if (MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo()) {
447 Record.AddDeclRef(MemberInfo->getInstantiatedFrom());
448 Record.push_back(MemberInfo->getTemplateSpecializationKind());
449 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation());
450 } else {
451 Record.AddDeclRef(nullptr);
452 }
453
454 if (D->getDeclContext() == D->getLexicalDeclContext() &&
455 !D->hasAttrs() &&
456 !D->isImplicit() &&
457 !D->isUsed(false) &&
458 !D->hasExtInfo() &&
459 !D->getTypedefNameForAnonDecl() &&
460 D->getFirstDecl() == D->getMostRecentDecl() &&
461 !D->isInvalidDecl() &&
462 !D->isReferenced() &&
463 !D->isTopLevelDeclInObjCContainer() &&
464 D->getAccess() == AS_none &&
465 !D->isModulePrivate() &&
466 !CXXRecordDecl::classofKind(D->getKind()) &&
467 !D->getIntegerTypeSourceInfo() &&
468 !D->getMemberSpecializationInfo() &&
469 !needsAnonymousDeclarationNumber(D) &&
470 D->getDeclName().getNameKind() == DeclarationName::Identifier)
471 AbbrevToUse = Writer.getDeclEnumAbbrev();
472
473 Code = serialization::DECL_ENUM;
474 }
475
VisitRecordDecl(RecordDecl * D)476 void ASTDeclWriter::VisitRecordDecl(RecordDecl *D) {
477 VisitTagDecl(D);
478 Record.push_back(D->hasFlexibleArrayMember());
479 Record.push_back(D->isAnonymousStructOrUnion());
480 Record.push_back(D->hasObjectMember());
481 Record.push_back(D->hasVolatileMember());
482 Record.push_back(D->isNonTrivialToPrimitiveDefaultInitialize());
483 Record.push_back(D->isNonTrivialToPrimitiveCopy());
484 Record.push_back(D->isNonTrivialToPrimitiveDestroy());
485 Record.push_back(D->hasNonTrivialToPrimitiveDefaultInitializeCUnion());
486 Record.push_back(D->hasNonTrivialToPrimitiveDestructCUnion());
487 Record.push_back(D->hasNonTrivialToPrimitiveCopyCUnion());
488 Record.push_back(D->isParamDestroyedInCallee());
489 Record.push_back(D->getArgPassingRestrictions());
490
491 if (D->getDeclContext() == D->getLexicalDeclContext() &&
492 !D->hasAttrs() &&
493 !D->isImplicit() &&
494 !D->isUsed(false) &&
495 !D->hasExtInfo() &&
496 !D->getTypedefNameForAnonDecl() &&
497 D->getFirstDecl() == D->getMostRecentDecl() &&
498 !D->isInvalidDecl() &&
499 !D->isReferenced() &&
500 !D->isTopLevelDeclInObjCContainer() &&
501 D->getAccess() == AS_none &&
502 !D->isModulePrivate() &&
503 !CXXRecordDecl::classofKind(D->getKind()) &&
504 !needsAnonymousDeclarationNumber(D) &&
505 D->getDeclName().getNameKind() == DeclarationName::Identifier)
506 AbbrevToUse = Writer.getDeclRecordAbbrev();
507
508 Code = serialization::DECL_RECORD;
509 }
510
VisitValueDecl(ValueDecl * D)511 void ASTDeclWriter::VisitValueDecl(ValueDecl *D) {
512 VisitNamedDecl(D);
513 Record.AddTypeRef(D->getType());
514 }
515
VisitEnumConstantDecl(EnumConstantDecl * D)516 void ASTDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) {
517 VisitValueDecl(D);
518 Record.push_back(D->getInitExpr()? 1 : 0);
519 if (D->getInitExpr())
520 Record.AddStmt(D->getInitExpr());
521 Record.AddAPSInt(D->getInitVal());
522
523 Code = serialization::DECL_ENUM_CONSTANT;
524 }
525
VisitDeclaratorDecl(DeclaratorDecl * D)526 void ASTDeclWriter::VisitDeclaratorDecl(DeclaratorDecl *D) {
527 VisitValueDecl(D);
528 Record.AddSourceLocation(D->getInnerLocStart());
529 Record.push_back(D->hasExtInfo());
530 if (D->hasExtInfo()) {
531 DeclaratorDecl::ExtInfo *Info = D->getExtInfo();
532 Record.AddQualifierInfo(*Info);
533 Record.AddStmt(Info->TrailingRequiresClause);
534 }
535 // The location information is deferred until the end of the record.
536 Record.AddTypeRef(D->getTypeSourceInfo() ? D->getTypeSourceInfo()->getType()
537 : QualType());
538 }
539
VisitFunctionDecl(FunctionDecl * D)540 void ASTDeclWriter::VisitFunctionDecl(FunctionDecl *D) {
541 VisitRedeclarable(D);
542 VisitDeclaratorDecl(D);
543 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName());
544 Record.push_back(D->getIdentifierNamespace());
545
546 // FunctionDecl's body is handled last at ASTWriterDecl::Visit,
547 // after everything else is written.
548 Record.push_back(static_cast<int>(D->getStorageClass())); // FIXME: stable encoding
549 Record.push_back(D->isInlineSpecified());
550 Record.push_back(D->isInlined());
551 Record.push_back(D->isVirtualAsWritten());
552 Record.push_back(D->isPure());
553 Record.push_back(D->hasInheritedPrototype());
554 Record.push_back(D->hasWrittenPrototype());
555 Record.push_back(D->isDeletedBit());
556 Record.push_back(D->isTrivial());
557 Record.push_back(D->isTrivialForCall());
558 Record.push_back(D->isDefaulted());
559 Record.push_back(D->isExplicitlyDefaulted());
560 Record.push_back(D->hasImplicitReturnZero());
561 Record.push_back(static_cast<uint64_t>(D->getConstexprKind()));
562 Record.push_back(D->usesSEHTry());
563 Record.push_back(D->hasSkippedBody());
564 Record.push_back(D->isMultiVersion());
565 Record.push_back(D->isLateTemplateParsed());
566 Record.push_back(D->getLinkageInternal());
567 Record.AddSourceLocation(D->getEndLoc());
568
569 Record.push_back(D->getODRHash());
570
571 if (D->isDefaulted()) {
572 if (auto *FDI = D->getDefaultedFunctionInfo()) {
573 Record.push_back(FDI->getUnqualifiedLookups().size());
574 for (DeclAccessPair P : FDI->getUnqualifiedLookups()) {
575 Record.AddDeclRef(P.getDecl());
576 Record.push_back(P.getAccess());
577 }
578 } else {
579 Record.push_back(0);
580 }
581 }
582
583 Record.push_back(D->getTemplatedKind());
584 switch (D->getTemplatedKind()) {
585 case FunctionDecl::TK_NonTemplate:
586 break;
587 case FunctionDecl::TK_FunctionTemplate:
588 Record.AddDeclRef(D->getDescribedFunctionTemplate());
589 break;
590 case FunctionDecl::TK_MemberSpecialization: {
591 MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo();
592 Record.AddDeclRef(MemberInfo->getInstantiatedFrom());
593 Record.push_back(MemberInfo->getTemplateSpecializationKind());
594 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation());
595 break;
596 }
597 case FunctionDecl::TK_FunctionTemplateSpecialization: {
598 FunctionTemplateSpecializationInfo *
599 FTSInfo = D->getTemplateSpecializationInfo();
600
601 RegisterTemplateSpecialization(FTSInfo->getTemplate(), D);
602
603 Record.AddDeclRef(FTSInfo->getTemplate());
604 Record.push_back(FTSInfo->getTemplateSpecializationKind());
605
606 // Template arguments.
607 Record.AddTemplateArgumentList(FTSInfo->TemplateArguments);
608
609 // Template args as written.
610 Record.push_back(FTSInfo->TemplateArgumentsAsWritten != nullptr);
611 if (FTSInfo->TemplateArgumentsAsWritten) {
612 Record.push_back(FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs);
613 for (int i=0, e = FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs;
614 i!=e; ++i)
615 Record.AddTemplateArgumentLoc(
616 (*FTSInfo->TemplateArgumentsAsWritten)[i]);
617 Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->LAngleLoc);
618 Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->RAngleLoc);
619 }
620
621 Record.AddSourceLocation(FTSInfo->getPointOfInstantiation());
622
623 if (MemberSpecializationInfo *MemberInfo =
624 FTSInfo->getMemberSpecializationInfo()) {
625 Record.push_back(1);
626 Record.AddDeclRef(MemberInfo->getInstantiatedFrom());
627 Record.push_back(MemberInfo->getTemplateSpecializationKind());
628 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation());
629 } else {
630 Record.push_back(0);
631 }
632
633 if (D->isCanonicalDecl()) {
634 // Write the template that contains the specializations set. We will
635 // add a FunctionTemplateSpecializationInfo to it when reading.
636 Record.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl());
637 }
638 break;
639 }
640 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: {
641 DependentFunctionTemplateSpecializationInfo *
642 DFTSInfo = D->getDependentSpecializationInfo();
643
644 // Templates.
645 Record.push_back(DFTSInfo->getNumTemplates());
646 for (int i=0, e = DFTSInfo->getNumTemplates(); i != e; ++i)
647 Record.AddDeclRef(DFTSInfo->getTemplate(i));
648
649 // Templates args.
650 Record.push_back(DFTSInfo->getNumTemplateArgs());
651 for (int i=0, e = DFTSInfo->getNumTemplateArgs(); i != e; ++i)
652 Record.AddTemplateArgumentLoc(DFTSInfo->getTemplateArg(i));
653 Record.AddSourceLocation(DFTSInfo->getLAngleLoc());
654 Record.AddSourceLocation(DFTSInfo->getRAngleLoc());
655 break;
656 }
657 }
658
659 Record.push_back(D->param_size());
660 for (auto P : D->parameters())
661 Record.AddDeclRef(P);
662 Code = serialization::DECL_FUNCTION;
663 }
664
addExplicitSpecifier(ExplicitSpecifier ES,ASTRecordWriter & Record)665 static void addExplicitSpecifier(ExplicitSpecifier ES,
666 ASTRecordWriter &Record) {
667 uint64_t Kind = static_cast<uint64_t>(ES.getKind());
668 Kind = Kind << 1 | static_cast<bool>(ES.getExpr());
669 Record.push_back(Kind);
670 if (ES.getExpr()) {
671 Record.AddStmt(ES.getExpr());
672 }
673 }
674
VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl * D)675 void ASTDeclWriter::VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D) {
676 addExplicitSpecifier(D->getExplicitSpecifier(), Record);
677 Record.AddDeclRef(D->Ctor);
678 VisitFunctionDecl(D);
679 Record.push_back(D->isCopyDeductionCandidate());
680 Code = serialization::DECL_CXX_DEDUCTION_GUIDE;
681 }
682
VisitObjCMethodDecl(ObjCMethodDecl * D)683 void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) {
684 VisitNamedDecl(D);
685 // FIXME: convert to LazyStmtPtr?
686 // Unlike C/C++, method bodies will never be in header files.
687 bool HasBodyStuff = D->getBody() != nullptr;
688 Record.push_back(HasBodyStuff);
689 if (HasBodyStuff) {
690 Record.AddStmt(D->getBody());
691 }
692 Record.AddDeclRef(D->getSelfDecl());
693 Record.AddDeclRef(D->getCmdDecl());
694 Record.push_back(D->isInstanceMethod());
695 Record.push_back(D->isVariadic());
696 Record.push_back(D->isPropertyAccessor());
697 Record.push_back(D->isSynthesizedAccessorStub());
698 Record.push_back(D->isDefined());
699 Record.push_back(D->isOverriding());
700 Record.push_back(D->hasSkippedBody());
701
702 Record.push_back(D->isRedeclaration());
703 Record.push_back(D->hasRedeclaration());
704 if (D->hasRedeclaration()) {
705 assert(Context.getObjCMethodRedeclaration(D));
706 Record.AddDeclRef(Context.getObjCMethodRedeclaration(D));
707 }
708
709 // FIXME: stable encoding for @required/@optional
710 Record.push_back(D->getImplementationControl());
711 // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway/nullability
712 Record.push_back(D->getObjCDeclQualifier());
713 Record.push_back(D->hasRelatedResultType());
714 Record.AddTypeRef(D->getReturnType());
715 Record.AddTypeSourceInfo(D->getReturnTypeSourceInfo());
716 Record.AddSourceLocation(D->getEndLoc());
717 Record.push_back(D->param_size());
718 for (const auto *P : D->parameters())
719 Record.AddDeclRef(P);
720
721 Record.push_back(D->getSelLocsKind());
722 unsigned NumStoredSelLocs = D->getNumStoredSelLocs();
723 SourceLocation *SelLocs = D->getStoredSelLocs();
724 Record.push_back(NumStoredSelLocs);
725 for (unsigned i = 0; i != NumStoredSelLocs; ++i)
726 Record.AddSourceLocation(SelLocs[i]);
727
728 Code = serialization::DECL_OBJC_METHOD;
729 }
730
VisitObjCTypeParamDecl(ObjCTypeParamDecl * D)731 void ASTDeclWriter::VisitObjCTypeParamDecl(ObjCTypeParamDecl *D) {
732 VisitTypedefNameDecl(D);
733 Record.push_back(D->Variance);
734 Record.push_back(D->Index);
735 Record.AddSourceLocation(D->VarianceLoc);
736 Record.AddSourceLocation(D->ColonLoc);
737
738 Code = serialization::DECL_OBJC_TYPE_PARAM;
739 }
740
VisitObjCContainerDecl(ObjCContainerDecl * D)741 void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) {
742 VisitNamedDecl(D);
743 Record.AddSourceLocation(D->getAtStartLoc());
744 Record.AddSourceRange(D->getAtEndRange());
745 // Abstract class (no need to define a stable serialization::DECL code).
746 }
747
VisitObjCInterfaceDecl(ObjCInterfaceDecl * D)748 void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) {
749 VisitRedeclarable(D);
750 VisitObjCContainerDecl(D);
751 Record.AddTypeRef(QualType(D->getTypeForDecl(), 0));
752 AddObjCTypeParamList(D->TypeParamList);
753
754 Record.push_back(D->isThisDeclarationADefinition());
755 if (D->isThisDeclarationADefinition()) {
756 // Write the DefinitionData
757 ObjCInterfaceDecl::DefinitionData &Data = D->data();
758
759 Record.AddTypeSourceInfo(D->getSuperClassTInfo());
760 Record.AddSourceLocation(D->getEndOfDefinitionLoc());
761 Record.push_back(Data.HasDesignatedInitializers);
762
763 // Write out the protocols that are directly referenced by the @interface.
764 Record.push_back(Data.ReferencedProtocols.size());
765 for (const auto *P : D->protocols())
766 Record.AddDeclRef(P);
767 for (const auto &PL : D->protocol_locs())
768 Record.AddSourceLocation(PL);
769
770 // Write out the protocols that are transitively referenced.
771 Record.push_back(Data.AllReferencedProtocols.size());
772 for (ObjCList<ObjCProtocolDecl>::iterator
773 P = Data.AllReferencedProtocols.begin(),
774 PEnd = Data.AllReferencedProtocols.end();
775 P != PEnd; ++P)
776 Record.AddDeclRef(*P);
777
778
779 if (ObjCCategoryDecl *Cat = D->getCategoryListRaw()) {
780 // Ensure that we write out the set of categories for this class.
781 Writer.ObjCClassesWithCategories.insert(D);
782
783 // Make sure that the categories get serialized.
784 for (; Cat; Cat = Cat->getNextClassCategoryRaw())
785 (void)Writer.GetDeclRef(Cat);
786 }
787 }
788
789 Code = serialization::DECL_OBJC_INTERFACE;
790 }
791
VisitObjCIvarDecl(ObjCIvarDecl * D)792 void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) {
793 VisitFieldDecl(D);
794 // FIXME: stable encoding for @public/@private/@protected/@package
795 Record.push_back(D->getAccessControl());
796 Record.push_back(D->getSynthesize());
797
798 if (D->getDeclContext() == D->getLexicalDeclContext() &&
799 !D->hasAttrs() &&
800 !D->isImplicit() &&
801 !D->isUsed(false) &&
802 !D->isInvalidDecl() &&
803 !D->isReferenced() &&
804 !D->isModulePrivate() &&
805 !D->getBitWidth() &&
806 !D->hasExtInfo() &&
807 D->getDeclName())
808 AbbrevToUse = Writer.getDeclObjCIvarAbbrev();
809
810 Code = serialization::DECL_OBJC_IVAR;
811 }
812
VisitObjCProtocolDecl(ObjCProtocolDecl * D)813 void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) {
814 VisitRedeclarable(D);
815 VisitObjCContainerDecl(D);
816
817 Record.push_back(D->isThisDeclarationADefinition());
818 if (D->isThisDeclarationADefinition()) {
819 Record.push_back(D->protocol_size());
820 for (const auto *I : D->protocols())
821 Record.AddDeclRef(I);
822 for (const auto &PL : D->protocol_locs())
823 Record.AddSourceLocation(PL);
824 }
825
826 Code = serialization::DECL_OBJC_PROTOCOL;
827 }
828
VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl * D)829 void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) {
830 VisitFieldDecl(D);
831 Code = serialization::DECL_OBJC_AT_DEFS_FIELD;
832 }
833
VisitObjCCategoryDecl(ObjCCategoryDecl * D)834 void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) {
835 VisitObjCContainerDecl(D);
836 Record.AddSourceLocation(D->getCategoryNameLoc());
837 Record.AddSourceLocation(D->getIvarLBraceLoc());
838 Record.AddSourceLocation(D->getIvarRBraceLoc());
839 Record.AddDeclRef(D->getClassInterface());
840 AddObjCTypeParamList(D->TypeParamList);
841 Record.push_back(D->protocol_size());
842 for (const auto *I : D->protocols())
843 Record.AddDeclRef(I);
844 for (const auto &PL : D->protocol_locs())
845 Record.AddSourceLocation(PL);
846 Code = serialization::DECL_OBJC_CATEGORY;
847 }
848
VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl * D)849 void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) {
850 VisitNamedDecl(D);
851 Record.AddDeclRef(D->getClassInterface());
852 Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS;
853 }
854
VisitObjCPropertyDecl(ObjCPropertyDecl * D)855 void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
856 VisitNamedDecl(D);
857 Record.AddSourceLocation(D->getAtLoc());
858 Record.AddSourceLocation(D->getLParenLoc());
859 Record.AddTypeRef(D->getType());
860 Record.AddTypeSourceInfo(D->getTypeSourceInfo());
861 // FIXME: stable encoding
862 Record.push_back((unsigned)D->getPropertyAttributes());
863 Record.push_back((unsigned)D->getPropertyAttributesAsWritten());
864 // FIXME: stable encoding
865 Record.push_back((unsigned)D->getPropertyImplementation());
866 Record.AddDeclarationName(D->getGetterName());
867 Record.AddSourceLocation(D->getGetterNameLoc());
868 Record.AddDeclarationName(D->getSetterName());
869 Record.AddSourceLocation(D->getSetterNameLoc());
870 Record.AddDeclRef(D->getGetterMethodDecl());
871 Record.AddDeclRef(D->getSetterMethodDecl());
872 Record.AddDeclRef(D->getPropertyIvarDecl());
873 Code = serialization::DECL_OBJC_PROPERTY;
874 }
875
VisitObjCImplDecl(ObjCImplDecl * D)876 void ASTDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) {
877 VisitObjCContainerDecl(D);
878 Record.AddDeclRef(D->getClassInterface());
879 // Abstract class (no need to define a stable serialization::DECL code).
880 }
881
VisitObjCCategoryImplDecl(ObjCCategoryImplDecl * D)882 void ASTDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
883 VisitObjCImplDecl(D);
884 Record.AddSourceLocation(D->getCategoryNameLoc());
885 Code = serialization::DECL_OBJC_CATEGORY_IMPL;
886 }
887
VisitObjCImplementationDecl(ObjCImplementationDecl * D)888 void ASTDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
889 VisitObjCImplDecl(D);
890 Record.AddDeclRef(D->getSuperClass());
891 Record.AddSourceLocation(D->getSuperClassLoc());
892 Record.AddSourceLocation(D->getIvarLBraceLoc());
893 Record.AddSourceLocation(D->getIvarRBraceLoc());
894 Record.push_back(D->hasNonZeroConstructors());
895 Record.push_back(D->hasDestructors());
896 Record.push_back(D->NumIvarInitializers);
897 if (D->NumIvarInitializers)
898 Record.AddCXXCtorInitializers(
899 llvm::makeArrayRef(D->init_begin(), D->init_end()));
900 Code = serialization::DECL_OBJC_IMPLEMENTATION;
901 }
902
VisitObjCPropertyImplDecl(ObjCPropertyImplDecl * D)903 void ASTDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
904 VisitDecl(D);
905 Record.AddSourceLocation(D->getBeginLoc());
906 Record.AddDeclRef(D->getPropertyDecl());
907 Record.AddDeclRef(D->getPropertyIvarDecl());
908 Record.AddSourceLocation(D->getPropertyIvarDeclLoc());
909 Record.AddDeclRef(D->getGetterMethodDecl());
910 Record.AddDeclRef(D->getSetterMethodDecl());
911 Record.AddStmt(D->getGetterCXXConstructor());
912 Record.AddStmt(D->getSetterCXXAssignment());
913 Code = serialization::DECL_OBJC_PROPERTY_IMPL;
914 }
915
VisitFieldDecl(FieldDecl * D)916 void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) {
917 VisitDeclaratorDecl(D);
918 Record.push_back(D->isMutable());
919
920 FieldDecl::InitStorageKind ISK = D->InitStorage.getInt();
921 Record.push_back(ISK);
922 if (ISK == FieldDecl::ISK_CapturedVLAType)
923 Record.AddTypeRef(QualType(D->getCapturedVLAType(), 0));
924 else if (ISK)
925 Record.AddStmt(D->getInClassInitializer());
926
927 Record.AddStmt(D->getBitWidth());
928
929 if (!D->getDeclName())
930 Record.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D));
931
932 if (D->getDeclContext() == D->getLexicalDeclContext() &&
933 !D->hasAttrs() &&
934 !D->isImplicit() &&
935 !D->isUsed(false) &&
936 !D->isInvalidDecl() &&
937 !D->isReferenced() &&
938 !D->isTopLevelDeclInObjCContainer() &&
939 !D->isModulePrivate() &&
940 !D->getBitWidth() &&
941 !D->hasInClassInitializer() &&
942 !D->hasCapturedVLAType() &&
943 !D->hasExtInfo() &&
944 !ObjCIvarDecl::classofKind(D->getKind()) &&
945 !ObjCAtDefsFieldDecl::classofKind(D->getKind()) &&
946 D->getDeclName())
947 AbbrevToUse = Writer.getDeclFieldAbbrev();
948
949 Code = serialization::DECL_FIELD;
950 }
951
VisitMSPropertyDecl(MSPropertyDecl * D)952 void ASTDeclWriter::VisitMSPropertyDecl(MSPropertyDecl *D) {
953 VisitDeclaratorDecl(D);
954 Record.AddIdentifierRef(D->getGetterId());
955 Record.AddIdentifierRef(D->getSetterId());
956 Code = serialization::DECL_MS_PROPERTY;
957 }
958
VisitMSGuidDecl(MSGuidDecl * D)959 void ASTDeclWriter::VisitMSGuidDecl(MSGuidDecl *D) {
960 VisitValueDecl(D);
961 MSGuidDecl::Parts Parts = D->getParts();
962 Record.push_back(Parts.Part1);
963 Record.push_back(Parts.Part2);
964 Record.push_back(Parts.Part3);
965 for (auto C : Parts.Part4And5)
966 Record.push_back(C);
967 Code = serialization::DECL_MS_GUID;
968 }
969
VisitTemplateParamObjectDecl(TemplateParamObjectDecl * D)970 void ASTDeclWriter::VisitTemplateParamObjectDecl(TemplateParamObjectDecl *D) {
971 VisitValueDecl(D);
972 Record.AddAPValue(D->getValue());
973 Code = serialization::DECL_TEMPLATE_PARAM_OBJECT;
974 }
975
VisitIndirectFieldDecl(IndirectFieldDecl * D)976 void ASTDeclWriter::VisitIndirectFieldDecl(IndirectFieldDecl *D) {
977 VisitValueDecl(D);
978 Record.push_back(D->getChainingSize());
979
980 for (const auto *P : D->chain())
981 Record.AddDeclRef(P);
982 Code = serialization::DECL_INDIRECTFIELD;
983 }
984
VisitVarDecl(VarDecl * D)985 void ASTDeclWriter::VisitVarDecl(VarDecl *D) {
986 VisitRedeclarable(D);
987 VisitDeclaratorDecl(D);
988 Record.push_back(D->getStorageClass());
989 Record.push_back(D->getTSCSpec());
990 Record.push_back(D->getInitStyle());
991 Record.push_back(D->isARCPseudoStrong());
992 if (!isa<ParmVarDecl>(D)) {
993 Record.push_back(D->isThisDeclarationADemotedDefinition());
994 Record.push_back(D->isExceptionVariable());
995 Record.push_back(D->isNRVOVariable());
996 Record.push_back(D->isCXXForRangeDecl());
997 Record.push_back(D->isObjCForDecl());
998 Record.push_back(D->isInline());
999 Record.push_back(D->isInlineSpecified());
1000 Record.push_back(D->isConstexpr());
1001 Record.push_back(D->isInitCapture());
1002 Record.push_back(D->isPreviousDeclInSameBlockScope());
1003 if (const auto *IPD = dyn_cast<ImplicitParamDecl>(D))
1004 Record.push_back(static_cast<unsigned>(IPD->getParameterKind()));
1005 else
1006 Record.push_back(0);
1007 Record.push_back(D->isEscapingByref());
1008 }
1009 Record.push_back(D->getLinkageInternal());
1010
1011 Record.AddVarDeclInit(D);
1012
1013 if (D->hasAttr<BlocksAttr>() && D->getType()->getAsCXXRecordDecl()) {
1014 BlockVarCopyInit Init = Writer.Context->getBlockVarCopyInit(D);
1015 Record.AddStmt(Init.getCopyExpr());
1016 if (Init.getCopyExpr())
1017 Record.push_back(Init.canThrow());
1018 }
1019
1020 if (D->getStorageDuration() == SD_Static) {
1021 bool ModulesCodegen = false;
1022 if (Writer.WritingModule &&
1023 !D->getDescribedVarTemplate() && !D->getMemberSpecializationInfo() &&
1024 !isa<VarTemplateSpecializationDecl>(D)) {
1025 // When building a C++ Modules TS module interface unit, a strong
1026 // definition in the module interface is provided by the compilation of
1027 // that module interface unit, not by its users. (Inline variables are
1028 // still emitted in module users.)
1029 ModulesCodegen =
1030 (Writer.WritingModule->Kind == Module::ModuleInterfaceUnit ||
1031 (D->hasAttr<DLLExportAttr>() &&
1032 Writer.Context->getLangOpts().BuildingPCHWithObjectFile)) &&
1033 Writer.Context->GetGVALinkageForVariable(D) == GVA_StrongExternal;
1034 }
1035 Record.push_back(ModulesCodegen);
1036 if (ModulesCodegen)
1037 Writer.ModularCodegenDecls.push_back(Writer.GetDeclRef(D));
1038 }
1039
1040 enum {
1041 VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization
1042 };
1043 if (VarTemplateDecl *TemplD = D->getDescribedVarTemplate()) {
1044 Record.push_back(VarTemplate);
1045 Record.AddDeclRef(TemplD);
1046 } else if (MemberSpecializationInfo *SpecInfo
1047 = D->getMemberSpecializationInfo()) {
1048 Record.push_back(StaticDataMemberSpecialization);
1049 Record.AddDeclRef(SpecInfo->getInstantiatedFrom());
1050 Record.push_back(SpecInfo->getTemplateSpecializationKind());
1051 Record.AddSourceLocation(SpecInfo->getPointOfInstantiation());
1052 } else {
1053 Record.push_back(VarNotTemplate);
1054 }
1055
1056 if (D->getDeclContext() == D->getLexicalDeclContext() &&
1057 !D->hasAttrs() &&
1058 !D->isImplicit() &&
1059 !D->isUsed(false) &&
1060 !D->isInvalidDecl() &&
1061 !D->isReferenced() &&
1062 !D->isTopLevelDeclInObjCContainer() &&
1063 D->getAccess() == AS_none &&
1064 !D->isModulePrivate() &&
1065 !needsAnonymousDeclarationNumber(D) &&
1066 D->getDeclName().getNameKind() == DeclarationName::Identifier &&
1067 !D->hasExtInfo() &&
1068 D->getFirstDecl() == D->getMostRecentDecl() &&
1069 D->getKind() == Decl::Var &&
1070 !D->isInline() &&
1071 !D->isConstexpr() &&
1072 !D->isInitCapture() &&
1073 !D->isPreviousDeclInSameBlockScope() &&
1074 !(D->hasAttr<BlocksAttr>() && D->getType()->getAsCXXRecordDecl()) &&
1075 !D->isEscapingByref() &&
1076 D->getStorageDuration() != SD_Static &&
1077 !D->getMemberSpecializationInfo())
1078 AbbrevToUse = Writer.getDeclVarAbbrev();
1079
1080 Code = serialization::DECL_VAR;
1081 }
1082
VisitImplicitParamDecl(ImplicitParamDecl * D)1083 void ASTDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) {
1084 VisitVarDecl(D);
1085 Code = serialization::DECL_IMPLICIT_PARAM;
1086 }
1087
VisitParmVarDecl(ParmVarDecl * D)1088 void ASTDeclWriter::VisitParmVarDecl(ParmVarDecl *D) {
1089 VisitVarDecl(D);
1090 Record.push_back(D->isObjCMethodParameter());
1091 Record.push_back(D->getFunctionScopeDepth());
1092 Record.push_back(D->getFunctionScopeIndex());
1093 Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding
1094 Record.push_back(D->isKNRPromoted());
1095 Record.push_back(D->hasInheritedDefaultArg());
1096 Record.push_back(D->hasUninstantiatedDefaultArg());
1097 if (D->hasUninstantiatedDefaultArg())
1098 Record.AddStmt(D->getUninstantiatedDefaultArg());
1099 Code = serialization::DECL_PARM_VAR;
1100
1101 // If the assumptions about the DECL_PARM_VAR abbrev are true, use it. Here
1102 // we dynamically check for the properties that we optimize for, but don't
1103 // know are true of all PARM_VAR_DECLs.
1104 if (D->getDeclContext() == D->getLexicalDeclContext() &&
1105 !D->hasAttrs() &&
1106 !D->hasExtInfo() &&
1107 !D->isImplicit() &&
1108 !D->isUsed(false) &&
1109 !D->isInvalidDecl() &&
1110 !D->isReferenced() &&
1111 D->getAccess() == AS_none &&
1112 !D->isModulePrivate() &&
1113 D->getStorageClass() == 0 &&
1114 D->getInitStyle() == VarDecl::CInit && // Can params have anything else?
1115 D->getFunctionScopeDepth() == 0 &&
1116 D->getObjCDeclQualifier() == 0 &&
1117 !D->isKNRPromoted() &&
1118 !D->hasInheritedDefaultArg() &&
1119 D->getInit() == nullptr &&
1120 !D->hasUninstantiatedDefaultArg()) // No default expr.
1121 AbbrevToUse = Writer.getDeclParmVarAbbrev();
1122
1123 // Check things we know are true of *every* PARM_VAR_DECL, which is more than
1124 // just us assuming it.
1125 assert(!D->getTSCSpec() && "PARM_VAR_DECL can't use TLS");
1126 assert(!D->isThisDeclarationADemotedDefinition()
1127 && "PARM_VAR_DECL can't be demoted definition.");
1128 assert(D->getAccess() == AS_none && "PARM_VAR_DECL can't be public/private");
1129 assert(!D->isExceptionVariable() && "PARM_VAR_DECL can't be exception var");
1130 assert(D->getPreviousDecl() == nullptr && "PARM_VAR_DECL can't be redecl");
1131 assert(!D->isStaticDataMember() &&
1132 "PARM_VAR_DECL can't be static data member");
1133 }
1134
VisitDecompositionDecl(DecompositionDecl * D)1135 void ASTDeclWriter::VisitDecompositionDecl(DecompositionDecl *D) {
1136 // Record the number of bindings first to simplify deserialization.
1137 Record.push_back(D->bindings().size());
1138
1139 VisitVarDecl(D);
1140 for (auto *B : D->bindings())
1141 Record.AddDeclRef(B);
1142 Code = serialization::DECL_DECOMPOSITION;
1143 }
1144
VisitBindingDecl(BindingDecl * D)1145 void ASTDeclWriter::VisitBindingDecl(BindingDecl *D) {
1146 VisitValueDecl(D);
1147 Record.AddStmt(D->getBinding());
1148 Code = serialization::DECL_BINDING;
1149 }
1150
VisitFileScopeAsmDecl(FileScopeAsmDecl * D)1151 void ASTDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) {
1152 VisitDecl(D);
1153 Record.AddStmt(D->getAsmString());
1154 Record.AddSourceLocation(D->getRParenLoc());
1155 Code = serialization::DECL_FILE_SCOPE_ASM;
1156 }
1157
VisitEmptyDecl(EmptyDecl * D)1158 void ASTDeclWriter::VisitEmptyDecl(EmptyDecl *D) {
1159 VisitDecl(D);
1160 Code = serialization::DECL_EMPTY;
1161 }
1162
VisitLifetimeExtendedTemporaryDecl(LifetimeExtendedTemporaryDecl * D)1163 void ASTDeclWriter::VisitLifetimeExtendedTemporaryDecl(
1164 LifetimeExtendedTemporaryDecl *D) {
1165 VisitDecl(D);
1166 Record.AddDeclRef(D->getExtendingDecl());
1167 Record.AddStmt(D->getTemporaryExpr());
1168 Record.push_back(static_cast<bool>(D->getValue()));
1169 if (D->getValue())
1170 Record.AddAPValue(*D->getValue());
1171 Record.push_back(D->getManglingNumber());
1172 Code = serialization::DECL_LIFETIME_EXTENDED_TEMPORARY;
1173 }
VisitBlockDecl(BlockDecl * D)1174 void ASTDeclWriter::VisitBlockDecl(BlockDecl *D) {
1175 VisitDecl(D);
1176 Record.AddStmt(D->getBody());
1177 Record.AddTypeSourceInfo(D->getSignatureAsWritten());
1178 Record.push_back(D->param_size());
1179 for (ParmVarDecl *P : D->parameters())
1180 Record.AddDeclRef(P);
1181 Record.push_back(D->isVariadic());
1182 Record.push_back(D->blockMissingReturnType());
1183 Record.push_back(D->isConversionFromLambda());
1184 Record.push_back(D->doesNotEscape());
1185 Record.push_back(D->canAvoidCopyToHeap());
1186 Record.push_back(D->capturesCXXThis());
1187 Record.push_back(D->getNumCaptures());
1188 for (const auto &capture : D->captures()) {
1189 Record.AddDeclRef(capture.getVariable());
1190
1191 unsigned flags = 0;
1192 if (capture.isByRef()) flags |= 1;
1193 if (capture.isNested()) flags |= 2;
1194 if (capture.hasCopyExpr()) flags |= 4;
1195 Record.push_back(flags);
1196
1197 if (capture.hasCopyExpr()) Record.AddStmt(capture.getCopyExpr());
1198 }
1199
1200 Code = serialization::DECL_BLOCK;
1201 }
1202
VisitCapturedDecl(CapturedDecl * CD)1203 void ASTDeclWriter::VisitCapturedDecl(CapturedDecl *CD) {
1204 Record.push_back(CD->getNumParams());
1205 VisitDecl(CD);
1206 Record.push_back(CD->getContextParamPosition());
1207 Record.push_back(CD->isNothrow() ? 1 : 0);
1208 // Body is stored by VisitCapturedStmt.
1209 for (unsigned I = 0; I < CD->getNumParams(); ++I)
1210 Record.AddDeclRef(CD->getParam(I));
1211 Code = serialization::DECL_CAPTURED;
1212 }
1213
VisitLinkageSpecDecl(LinkageSpecDecl * D)1214 void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
1215 VisitDecl(D);
1216 Record.push_back(D->getLanguage());
1217 Record.AddSourceLocation(D->getExternLoc());
1218 Record.AddSourceLocation(D->getRBraceLoc());
1219 Code = serialization::DECL_LINKAGE_SPEC;
1220 }
1221
VisitExportDecl(ExportDecl * D)1222 void ASTDeclWriter::VisitExportDecl(ExportDecl *D) {
1223 VisitDecl(D);
1224 Record.AddSourceLocation(D->getRBraceLoc());
1225 Code = serialization::DECL_EXPORT;
1226 }
1227
VisitLabelDecl(LabelDecl * D)1228 void ASTDeclWriter::VisitLabelDecl(LabelDecl *D) {
1229 VisitNamedDecl(D);
1230 Record.AddSourceLocation(D->getBeginLoc());
1231 Code = serialization::DECL_LABEL;
1232 }
1233
1234
VisitNamespaceDecl(NamespaceDecl * D)1235 void ASTDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) {
1236 VisitRedeclarable(D);
1237 VisitNamedDecl(D);
1238 Record.push_back(D->isInline());
1239 Record.AddSourceLocation(D->getBeginLoc());
1240 Record.AddSourceLocation(D->getRBraceLoc());
1241
1242 if (D->isOriginalNamespace())
1243 Record.AddDeclRef(D->getAnonymousNamespace());
1244 Code = serialization::DECL_NAMESPACE;
1245
1246 if (Writer.hasChain() && D->isAnonymousNamespace() &&
1247 D == D->getMostRecentDecl()) {
1248 // This is a most recent reopening of the anonymous namespace. If its parent
1249 // is in a previous PCH (or is the TU), mark that parent for update, because
1250 // the original namespace always points to the latest re-opening of its
1251 // anonymous namespace.
1252 Decl *Parent = cast<Decl>(
1253 D->getParent()->getRedeclContext()->getPrimaryContext());
1254 if (Parent->isFromASTFile() || isa<TranslationUnitDecl>(Parent)) {
1255 Writer.DeclUpdates[Parent].push_back(
1256 ASTWriter::DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, D));
1257 }
1258 }
1259 }
1260
VisitNamespaceAliasDecl(NamespaceAliasDecl * D)1261 void ASTDeclWriter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
1262 VisitRedeclarable(D);
1263 VisitNamedDecl(D);
1264 Record.AddSourceLocation(D->getNamespaceLoc());
1265 Record.AddSourceLocation(D->getTargetNameLoc());
1266 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc());
1267 Record.AddDeclRef(D->getNamespace());
1268 Code = serialization::DECL_NAMESPACE_ALIAS;
1269 }
1270
VisitUsingDecl(UsingDecl * D)1271 void ASTDeclWriter::VisitUsingDecl(UsingDecl *D) {
1272 VisitNamedDecl(D);
1273 Record.AddSourceLocation(D->getUsingLoc());
1274 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc());
1275 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName());
1276 Record.AddDeclRef(D->FirstUsingShadow.getPointer());
1277 Record.push_back(D->hasTypename());
1278 Record.AddDeclRef(Context.getInstantiatedFromUsingDecl(D));
1279 Code = serialization::DECL_USING;
1280 }
1281
VisitUsingEnumDecl(UsingEnumDecl * D)1282 void ASTDeclWriter::VisitUsingEnumDecl(UsingEnumDecl *D) {
1283 VisitNamedDecl(D);
1284 Record.AddSourceLocation(D->getUsingLoc());
1285 Record.AddSourceLocation(D->getEnumLoc());
1286 Record.AddDeclRef(D->getEnumDecl());
1287 Record.AddDeclRef(D->FirstUsingShadow.getPointer());
1288 Record.AddDeclRef(Context.getInstantiatedFromUsingEnumDecl(D));
1289 Code = serialization::DECL_USING_ENUM;
1290 }
1291
VisitUsingPackDecl(UsingPackDecl * D)1292 void ASTDeclWriter::VisitUsingPackDecl(UsingPackDecl *D) {
1293 Record.push_back(D->NumExpansions);
1294 VisitNamedDecl(D);
1295 Record.AddDeclRef(D->getInstantiatedFromUsingDecl());
1296 for (auto *E : D->expansions())
1297 Record.AddDeclRef(E);
1298 Code = serialization::DECL_USING_PACK;
1299 }
1300
VisitUsingShadowDecl(UsingShadowDecl * D)1301 void ASTDeclWriter::VisitUsingShadowDecl(UsingShadowDecl *D) {
1302 VisitRedeclarable(D);
1303 VisitNamedDecl(D);
1304 Record.AddDeclRef(D->getTargetDecl());
1305 Record.push_back(D->getIdentifierNamespace());
1306 Record.AddDeclRef(D->UsingOrNextShadow);
1307 Record.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D));
1308 Code = serialization::DECL_USING_SHADOW;
1309 }
1310
VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl * D)1311 void ASTDeclWriter::VisitConstructorUsingShadowDecl(
1312 ConstructorUsingShadowDecl *D) {
1313 VisitUsingShadowDecl(D);
1314 Record.AddDeclRef(D->NominatedBaseClassShadowDecl);
1315 Record.AddDeclRef(D->ConstructedBaseClassShadowDecl);
1316 Record.push_back(D->IsVirtual);
1317 Code = serialization::DECL_CONSTRUCTOR_USING_SHADOW;
1318 }
1319
VisitUsingDirectiveDecl(UsingDirectiveDecl * D)1320 void ASTDeclWriter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
1321 VisitNamedDecl(D);
1322 Record.AddSourceLocation(D->getUsingLoc());
1323 Record.AddSourceLocation(D->getNamespaceKeyLocation());
1324 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc());
1325 Record.AddDeclRef(D->getNominatedNamespace());
1326 Record.AddDeclRef(dyn_cast<Decl>(D->getCommonAncestor()));
1327 Code = serialization::DECL_USING_DIRECTIVE;
1328 }
1329
VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl * D)1330 void ASTDeclWriter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) {
1331 VisitValueDecl(D);
1332 Record.AddSourceLocation(D->getUsingLoc());
1333 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc());
1334 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName());
1335 Record.AddSourceLocation(D->getEllipsisLoc());
1336 Code = serialization::DECL_UNRESOLVED_USING_VALUE;
1337 }
1338
VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl * D)1339 void ASTDeclWriter::VisitUnresolvedUsingTypenameDecl(
1340 UnresolvedUsingTypenameDecl *D) {
1341 VisitTypeDecl(D);
1342 Record.AddSourceLocation(D->getTypenameLoc());
1343 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc());
1344 Record.AddSourceLocation(D->getEllipsisLoc());
1345 Code = serialization::DECL_UNRESOLVED_USING_TYPENAME;
1346 }
1347
VisitUnresolvedUsingIfExistsDecl(UnresolvedUsingIfExistsDecl * D)1348 void ASTDeclWriter::VisitUnresolvedUsingIfExistsDecl(
1349 UnresolvedUsingIfExistsDecl *D) {
1350 VisitNamedDecl(D);
1351 Code = serialization::DECL_UNRESOLVED_USING_IF_EXISTS;
1352 }
1353
VisitCXXRecordDecl(CXXRecordDecl * D)1354 void ASTDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) {
1355 VisitRecordDecl(D);
1356
1357 enum {
1358 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization
1359 };
1360 if (ClassTemplateDecl *TemplD = D->getDescribedClassTemplate()) {
1361 Record.push_back(CXXRecTemplate);
1362 Record.AddDeclRef(TemplD);
1363 } else if (MemberSpecializationInfo *MSInfo
1364 = D->getMemberSpecializationInfo()) {
1365 Record.push_back(CXXRecMemberSpecialization);
1366 Record.AddDeclRef(MSInfo->getInstantiatedFrom());
1367 Record.push_back(MSInfo->getTemplateSpecializationKind());
1368 Record.AddSourceLocation(MSInfo->getPointOfInstantiation());
1369 } else {
1370 Record.push_back(CXXRecNotTemplate);
1371 }
1372
1373 Record.push_back(D->isThisDeclarationADefinition());
1374 if (D->isThisDeclarationADefinition())
1375 Record.AddCXXDefinitionData(D);
1376
1377 // Store (what we currently believe to be) the key function to avoid
1378 // deserializing every method so we can compute it.
1379 if (D->isCompleteDefinition())
1380 Record.AddDeclRef(Context.getCurrentKeyFunction(D));
1381
1382 Code = serialization::DECL_CXX_RECORD;
1383 }
1384
VisitCXXMethodDecl(CXXMethodDecl * D)1385 void ASTDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) {
1386 VisitFunctionDecl(D);
1387 if (D->isCanonicalDecl()) {
1388 Record.push_back(D->size_overridden_methods());
1389 for (const CXXMethodDecl *MD : D->overridden_methods())
1390 Record.AddDeclRef(MD);
1391 } else {
1392 // We only need to record overridden methods once for the canonical decl.
1393 Record.push_back(0);
1394 }
1395
1396 if (D->getDeclContext() == D->getLexicalDeclContext() &&
1397 D->getFirstDecl() == D->getMostRecentDecl() &&
1398 !D->isInvalidDecl() &&
1399 !D->hasAttrs() &&
1400 !D->isTopLevelDeclInObjCContainer() &&
1401 D->getDeclName().getNameKind() == DeclarationName::Identifier &&
1402 !D->hasExtInfo() &&
1403 !D->hasInheritedPrototype() &&
1404 D->hasWrittenPrototype())
1405 AbbrevToUse = Writer.getDeclCXXMethodAbbrev();
1406
1407 Code = serialization::DECL_CXX_METHOD;
1408 }
1409
VisitCXXConstructorDecl(CXXConstructorDecl * D)1410 void ASTDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) {
1411 Record.push_back(D->getTrailingAllocKind());
1412 addExplicitSpecifier(D->getExplicitSpecifier(), Record);
1413 if (auto Inherited = D->getInheritedConstructor()) {
1414 Record.AddDeclRef(Inherited.getShadowDecl());
1415 Record.AddDeclRef(Inherited.getConstructor());
1416 }
1417
1418 VisitCXXMethodDecl(D);
1419 Code = serialization::DECL_CXX_CONSTRUCTOR;
1420 }
1421
VisitCXXDestructorDecl(CXXDestructorDecl * D)1422 void ASTDeclWriter::VisitCXXDestructorDecl(CXXDestructorDecl *D) {
1423 VisitCXXMethodDecl(D);
1424
1425 Record.AddDeclRef(D->getOperatorDelete());
1426 if (D->getOperatorDelete())
1427 Record.AddStmt(D->getOperatorDeleteThisArg());
1428
1429 Code = serialization::DECL_CXX_DESTRUCTOR;
1430 }
1431
VisitCXXConversionDecl(CXXConversionDecl * D)1432 void ASTDeclWriter::VisitCXXConversionDecl(CXXConversionDecl *D) {
1433 addExplicitSpecifier(D->getExplicitSpecifier(), Record);
1434 VisitCXXMethodDecl(D);
1435 Code = serialization::DECL_CXX_CONVERSION;
1436 }
1437
VisitImportDecl(ImportDecl * D)1438 void ASTDeclWriter::VisitImportDecl(ImportDecl *D) {
1439 VisitDecl(D);
1440 Record.push_back(Writer.getSubmoduleID(D->getImportedModule()));
1441 ArrayRef<SourceLocation> IdentifierLocs = D->getIdentifierLocs();
1442 Record.push_back(!IdentifierLocs.empty());
1443 if (IdentifierLocs.empty()) {
1444 Record.AddSourceLocation(D->getEndLoc());
1445 Record.push_back(1);
1446 } else {
1447 for (unsigned I = 0, N = IdentifierLocs.size(); I != N; ++I)
1448 Record.AddSourceLocation(IdentifierLocs[I]);
1449 Record.push_back(IdentifierLocs.size());
1450 }
1451 // Note: the number of source locations must always be the last element in
1452 // the record.
1453 Code = serialization::DECL_IMPORT;
1454 }
1455
VisitAccessSpecDecl(AccessSpecDecl * D)1456 void ASTDeclWriter::VisitAccessSpecDecl(AccessSpecDecl *D) {
1457 VisitDecl(D);
1458 Record.AddSourceLocation(D->getColonLoc());
1459 Code = serialization::DECL_ACCESS_SPEC;
1460 }
1461
VisitFriendDecl(FriendDecl * D)1462 void ASTDeclWriter::VisitFriendDecl(FriendDecl *D) {
1463 // Record the number of friend type template parameter lists here
1464 // so as to simplify memory allocation during deserialization.
1465 Record.push_back(D->NumTPLists);
1466 VisitDecl(D);
1467 bool hasFriendDecl = D->Friend.is<NamedDecl*>();
1468 Record.push_back(hasFriendDecl);
1469 if (hasFriendDecl)
1470 Record.AddDeclRef(D->getFriendDecl());
1471 else
1472 Record.AddTypeSourceInfo(D->getFriendType());
1473 for (unsigned i = 0; i < D->NumTPLists; ++i)
1474 Record.AddTemplateParameterList(D->getFriendTypeTemplateParameterList(i));
1475 Record.AddDeclRef(D->getNextFriend());
1476 Record.push_back(D->UnsupportedFriend);
1477 Record.AddSourceLocation(D->FriendLoc);
1478 Code = serialization::DECL_FRIEND;
1479 }
1480
VisitFriendTemplateDecl(FriendTemplateDecl * D)1481 void ASTDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) {
1482 VisitDecl(D);
1483 Record.push_back(D->getNumTemplateParameters());
1484 for (unsigned i = 0, e = D->getNumTemplateParameters(); i != e; ++i)
1485 Record.AddTemplateParameterList(D->getTemplateParameterList(i));
1486 Record.push_back(D->getFriendDecl() != nullptr);
1487 if (D->getFriendDecl())
1488 Record.AddDeclRef(D->getFriendDecl());
1489 else
1490 Record.AddTypeSourceInfo(D->getFriendType());
1491 Record.AddSourceLocation(D->getFriendLoc());
1492 Code = serialization::DECL_FRIEND_TEMPLATE;
1493 }
1494
VisitTemplateDecl(TemplateDecl * D)1495 void ASTDeclWriter::VisitTemplateDecl(TemplateDecl *D) {
1496 VisitNamedDecl(D);
1497
1498 Record.AddDeclRef(D->getTemplatedDecl());
1499 Record.AddTemplateParameterList(D->getTemplateParameters());
1500 }
1501
VisitConceptDecl(ConceptDecl * D)1502 void ASTDeclWriter::VisitConceptDecl(ConceptDecl *D) {
1503 VisitTemplateDecl(D);
1504 Record.AddStmt(D->getConstraintExpr());
1505 Code = serialization::DECL_CONCEPT;
1506 }
1507
VisitRequiresExprBodyDecl(RequiresExprBodyDecl * D)1508 void ASTDeclWriter::VisitRequiresExprBodyDecl(RequiresExprBodyDecl *D) {
1509 Code = serialization::DECL_REQUIRES_EXPR_BODY;
1510 }
1511
VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl * D)1512 void ASTDeclWriter::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) {
1513 VisitRedeclarable(D);
1514
1515 // Emit data to initialize CommonOrPrev before VisitTemplateDecl so that
1516 // getCommonPtr() can be used while this is still initializing.
1517 if (D->isFirstDecl()) {
1518 // This declaration owns the 'common' pointer, so serialize that data now.
1519 Record.AddDeclRef(D->getInstantiatedFromMemberTemplate());
1520 if (D->getInstantiatedFromMemberTemplate())
1521 Record.push_back(D->isMemberSpecialization());
1522 }
1523
1524 VisitTemplateDecl(D);
1525 Record.push_back(D->getIdentifierNamespace());
1526 }
1527
VisitClassTemplateDecl(ClassTemplateDecl * D)1528 void ASTDeclWriter::VisitClassTemplateDecl(ClassTemplateDecl *D) {
1529 VisitRedeclarableTemplateDecl(D);
1530
1531 if (D->isFirstDecl())
1532 AddTemplateSpecializations(D);
1533 Code = serialization::DECL_CLASS_TEMPLATE;
1534 }
1535
VisitClassTemplateSpecializationDecl(ClassTemplateSpecializationDecl * D)1536 void ASTDeclWriter::VisitClassTemplateSpecializationDecl(
1537 ClassTemplateSpecializationDecl *D) {
1538 RegisterTemplateSpecialization(D->getSpecializedTemplate(), D);
1539
1540 VisitCXXRecordDecl(D);
1541
1542 llvm::PointerUnion<ClassTemplateDecl *,
1543 ClassTemplatePartialSpecializationDecl *> InstFrom
1544 = D->getSpecializedTemplateOrPartial();
1545 if (Decl *InstFromD = InstFrom.dyn_cast<ClassTemplateDecl *>()) {
1546 Record.AddDeclRef(InstFromD);
1547 } else {
1548 Record.AddDeclRef(InstFrom.get<ClassTemplatePartialSpecializationDecl *>());
1549 Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs());
1550 }
1551
1552 Record.AddTemplateArgumentList(&D->getTemplateArgs());
1553 Record.AddSourceLocation(D->getPointOfInstantiation());
1554 Record.push_back(D->getSpecializationKind());
1555 Record.push_back(D->isCanonicalDecl());
1556
1557 if (D->isCanonicalDecl()) {
1558 // When reading, we'll add it to the folding set of the following template.
1559 Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl());
1560 }
1561
1562 // Explicit info.
1563 Record.AddTypeSourceInfo(D->getTypeAsWritten());
1564 if (D->getTypeAsWritten()) {
1565 Record.AddSourceLocation(D->getExternLoc());
1566 Record.AddSourceLocation(D->getTemplateKeywordLoc());
1567 }
1568
1569 Code = serialization::DECL_CLASS_TEMPLATE_SPECIALIZATION;
1570 }
1571
VisitClassTemplatePartialSpecializationDecl(ClassTemplatePartialSpecializationDecl * D)1572 void ASTDeclWriter::VisitClassTemplatePartialSpecializationDecl(
1573 ClassTemplatePartialSpecializationDecl *D) {
1574 Record.AddTemplateParameterList(D->getTemplateParameters());
1575 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten());
1576
1577 VisitClassTemplateSpecializationDecl(D);
1578
1579 // These are read/set from/to the first declaration.
1580 if (D->getPreviousDecl() == nullptr) {
1581 Record.AddDeclRef(D->getInstantiatedFromMember());
1582 Record.push_back(D->isMemberSpecialization());
1583 }
1584
1585 Code = serialization::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION;
1586 }
1587
VisitVarTemplateDecl(VarTemplateDecl * D)1588 void ASTDeclWriter::VisitVarTemplateDecl(VarTemplateDecl *D) {
1589 VisitRedeclarableTemplateDecl(D);
1590
1591 if (D->isFirstDecl())
1592 AddTemplateSpecializations(D);
1593 Code = serialization::DECL_VAR_TEMPLATE;
1594 }
1595
VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl * D)1596 void ASTDeclWriter::VisitVarTemplateSpecializationDecl(
1597 VarTemplateSpecializationDecl *D) {
1598 RegisterTemplateSpecialization(D->getSpecializedTemplate(), D);
1599
1600 VisitVarDecl(D);
1601
1602 llvm::PointerUnion<VarTemplateDecl *, VarTemplatePartialSpecializationDecl *>
1603 InstFrom = D->getSpecializedTemplateOrPartial();
1604 if (Decl *InstFromD = InstFrom.dyn_cast<VarTemplateDecl *>()) {
1605 Record.AddDeclRef(InstFromD);
1606 } else {
1607 Record.AddDeclRef(InstFrom.get<VarTemplatePartialSpecializationDecl *>());
1608 Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs());
1609 }
1610
1611 // Explicit info.
1612 Record.AddTypeSourceInfo(D->getTypeAsWritten());
1613 if (D->getTypeAsWritten()) {
1614 Record.AddSourceLocation(D->getExternLoc());
1615 Record.AddSourceLocation(D->getTemplateKeywordLoc());
1616 }
1617
1618 Record.AddTemplateArgumentList(&D->getTemplateArgs());
1619 Record.AddSourceLocation(D->getPointOfInstantiation());
1620 Record.push_back(D->getSpecializationKind());
1621 Record.push_back(D->IsCompleteDefinition);
1622 Record.push_back(D->isCanonicalDecl());
1623
1624 if (D->isCanonicalDecl()) {
1625 // When reading, we'll add it to the folding set of the following template.
1626 Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl());
1627 }
1628
1629 Code = serialization::DECL_VAR_TEMPLATE_SPECIALIZATION;
1630 }
1631
VisitVarTemplatePartialSpecializationDecl(VarTemplatePartialSpecializationDecl * D)1632 void ASTDeclWriter::VisitVarTemplatePartialSpecializationDecl(
1633 VarTemplatePartialSpecializationDecl *D) {
1634 Record.AddTemplateParameterList(D->getTemplateParameters());
1635 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten());
1636
1637 VisitVarTemplateSpecializationDecl(D);
1638
1639 // These are read/set from/to the first declaration.
1640 if (D->getPreviousDecl() == nullptr) {
1641 Record.AddDeclRef(D->getInstantiatedFromMember());
1642 Record.push_back(D->isMemberSpecialization());
1643 }
1644
1645 Code = serialization::DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION;
1646 }
1647
VisitClassScopeFunctionSpecializationDecl(ClassScopeFunctionSpecializationDecl * D)1648 void ASTDeclWriter::VisitClassScopeFunctionSpecializationDecl(
1649 ClassScopeFunctionSpecializationDecl *D) {
1650 VisitDecl(D);
1651 Record.AddDeclRef(D->getSpecialization());
1652 Record.push_back(D->hasExplicitTemplateArgs());
1653 if (D->hasExplicitTemplateArgs())
1654 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten());
1655 Code = serialization::DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION;
1656 }
1657
1658
VisitFunctionTemplateDecl(FunctionTemplateDecl * D)1659 void ASTDeclWriter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) {
1660 VisitRedeclarableTemplateDecl(D);
1661
1662 if (D->isFirstDecl())
1663 AddTemplateSpecializations(D);
1664 Code = serialization::DECL_FUNCTION_TEMPLATE;
1665 }
1666
VisitTemplateTypeParmDecl(TemplateTypeParmDecl * D)1667 void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) {
1668 Record.push_back(D->hasTypeConstraint());
1669 VisitTypeDecl(D);
1670
1671 Record.push_back(D->wasDeclaredWithTypename());
1672
1673 const TypeConstraint *TC = D->getTypeConstraint();
1674 Record.push_back(TC != nullptr);
1675 if (TC) {
1676 Record.AddNestedNameSpecifierLoc(TC->getNestedNameSpecifierLoc());
1677 Record.AddDeclarationNameInfo(TC->getConceptNameInfo());
1678 Record.AddDeclRef(TC->getNamedConcept());
1679 Record.push_back(TC->getTemplateArgsAsWritten() != nullptr);
1680 if (TC->getTemplateArgsAsWritten())
1681 Record.AddASTTemplateArgumentListInfo(TC->getTemplateArgsAsWritten());
1682 Record.AddStmt(TC->getImmediatelyDeclaredConstraint());
1683 Record.push_back(D->isExpandedParameterPack());
1684 if (D->isExpandedParameterPack())
1685 Record.push_back(D->getNumExpansionParameters());
1686 }
1687
1688 bool OwnsDefaultArg = D->hasDefaultArgument() &&
1689 !D->defaultArgumentWasInherited();
1690 Record.push_back(OwnsDefaultArg);
1691 if (OwnsDefaultArg)
1692 Record.AddTypeSourceInfo(D->getDefaultArgumentInfo());
1693
1694 Code = serialization::DECL_TEMPLATE_TYPE_PARM;
1695 }
1696
VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl * D)1697 void ASTDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) {
1698 // For an expanded parameter pack, record the number of expansion types here
1699 // so that it's easier for deserialization to allocate the right amount of
1700 // memory.
1701 Expr *TypeConstraint = D->getPlaceholderTypeConstraint();
1702 Record.push_back(!!TypeConstraint);
1703 if (D->isExpandedParameterPack())
1704 Record.push_back(D->getNumExpansionTypes());
1705
1706 VisitDeclaratorDecl(D);
1707 // TemplateParmPosition.
1708 Record.push_back(D->getDepth());
1709 Record.push_back(D->getPosition());
1710 if (TypeConstraint)
1711 Record.AddStmt(TypeConstraint);
1712
1713 if (D->isExpandedParameterPack()) {
1714 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) {
1715 Record.AddTypeRef(D->getExpansionType(I));
1716 Record.AddTypeSourceInfo(D->getExpansionTypeSourceInfo(I));
1717 }
1718
1719 Code = serialization::DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK;
1720 } else {
1721 // Rest of NonTypeTemplateParmDecl.
1722 Record.push_back(D->isParameterPack());
1723 bool OwnsDefaultArg = D->hasDefaultArgument() &&
1724 !D->defaultArgumentWasInherited();
1725 Record.push_back(OwnsDefaultArg);
1726 if (OwnsDefaultArg)
1727 Record.AddStmt(D->getDefaultArgument());
1728 Code = serialization::DECL_NON_TYPE_TEMPLATE_PARM;
1729 }
1730 }
1731
VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl * D)1732 void ASTDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) {
1733 // For an expanded parameter pack, record the number of expansion types here
1734 // so that it's easier for deserialization to allocate the right amount of
1735 // memory.
1736 if (D->isExpandedParameterPack())
1737 Record.push_back(D->getNumExpansionTemplateParameters());
1738
1739 VisitTemplateDecl(D);
1740 // TemplateParmPosition.
1741 Record.push_back(D->getDepth());
1742 Record.push_back(D->getPosition());
1743
1744 if (D->isExpandedParameterPack()) {
1745 for (unsigned I = 0, N = D->getNumExpansionTemplateParameters();
1746 I != N; ++I)
1747 Record.AddTemplateParameterList(D->getExpansionTemplateParameters(I));
1748 Code = serialization::DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK;
1749 } else {
1750 // Rest of TemplateTemplateParmDecl.
1751 Record.push_back(D->isParameterPack());
1752 bool OwnsDefaultArg = D->hasDefaultArgument() &&
1753 !D->defaultArgumentWasInherited();
1754 Record.push_back(OwnsDefaultArg);
1755 if (OwnsDefaultArg)
1756 Record.AddTemplateArgumentLoc(D->getDefaultArgument());
1757 Code = serialization::DECL_TEMPLATE_TEMPLATE_PARM;
1758 }
1759 }
1760
VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl * D)1761 void ASTDeclWriter::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) {
1762 VisitRedeclarableTemplateDecl(D);
1763 Code = serialization::DECL_TYPE_ALIAS_TEMPLATE;
1764 }
1765
VisitStaticAssertDecl(StaticAssertDecl * D)1766 void ASTDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) {
1767 VisitDecl(D);
1768 Record.AddStmt(D->getAssertExpr());
1769 Record.push_back(D->isFailed());
1770 Record.AddStmt(D->getMessage());
1771 Record.AddSourceLocation(D->getRParenLoc());
1772 Code = serialization::DECL_STATIC_ASSERT;
1773 }
1774
1775 /// Emit the DeclContext part of a declaration context decl.
VisitDeclContext(DeclContext * DC)1776 void ASTDeclWriter::VisitDeclContext(DeclContext *DC) {
1777 Record.AddOffset(Writer.WriteDeclContextLexicalBlock(Context, DC));
1778 Record.AddOffset(Writer.WriteDeclContextVisibleBlock(Context, DC));
1779 }
1780
getFirstLocalDecl(const Decl * D)1781 const Decl *ASTWriter::getFirstLocalDecl(const Decl *D) {
1782 assert(IsLocalDecl(D) && "expected a local declaration");
1783
1784 const Decl *Canon = D->getCanonicalDecl();
1785 if (IsLocalDecl(Canon))
1786 return Canon;
1787
1788 const Decl *&CacheEntry = FirstLocalDeclCache[Canon];
1789 if (CacheEntry)
1790 return CacheEntry;
1791
1792 for (const Decl *Redecl = D; Redecl; Redecl = Redecl->getPreviousDecl())
1793 if (IsLocalDecl(Redecl))
1794 D = Redecl;
1795 return CacheEntry = D;
1796 }
1797
1798 template <typename T>
VisitRedeclarable(Redeclarable<T> * D)1799 void ASTDeclWriter::VisitRedeclarable(Redeclarable<T> *D) {
1800 T *First = D->getFirstDecl();
1801 T *MostRecent = First->getMostRecentDecl();
1802 T *DAsT = static_cast<T *>(D);
1803 if (MostRecent != First) {
1804 assert(isRedeclarableDeclKind(DAsT->getKind()) &&
1805 "Not considered redeclarable?");
1806
1807 Record.AddDeclRef(First);
1808
1809 // Write out a list of local redeclarations of this declaration if it's the
1810 // first local declaration in the chain.
1811 const Decl *FirstLocal = Writer.getFirstLocalDecl(DAsT);
1812 if (DAsT == FirstLocal) {
1813 // Emit a list of all imported first declarations so that we can be sure
1814 // that all redeclarations visible to this module are before D in the
1815 // redecl chain.
1816 unsigned I = Record.size();
1817 Record.push_back(0);
1818 if (Writer.Chain)
1819 AddFirstDeclFromEachModule(DAsT, /*IncludeLocal*/false);
1820 // This is the number of imported first declarations + 1.
1821 Record[I] = Record.size() - I;
1822
1823 // Collect the set of local redeclarations of this declaration, from
1824 // newest to oldest.
1825 ASTWriter::RecordData LocalRedecls;
1826 ASTRecordWriter LocalRedeclWriter(Record, LocalRedecls);
1827 for (const Decl *Prev = FirstLocal->getMostRecentDecl();
1828 Prev != FirstLocal; Prev = Prev->getPreviousDecl())
1829 if (!Prev->isFromASTFile())
1830 LocalRedeclWriter.AddDeclRef(Prev);
1831
1832 // If we have any redecls, write them now as a separate record preceding
1833 // the declaration itself.
1834 if (LocalRedecls.empty())
1835 Record.push_back(0);
1836 else
1837 Record.AddOffset(LocalRedeclWriter.Emit(LOCAL_REDECLARATIONS));
1838 } else {
1839 Record.push_back(0);
1840 Record.AddDeclRef(FirstLocal);
1841 }
1842
1843 // Make sure that we serialize both the previous and the most-recent
1844 // declarations, which (transitively) ensures that all declarations in the
1845 // chain get serialized.
1846 //
1847 // FIXME: This is not correct; when we reach an imported declaration we
1848 // won't emit its previous declaration.
1849 (void)Writer.GetDeclRef(D->getPreviousDecl());
1850 (void)Writer.GetDeclRef(MostRecent);
1851 } else {
1852 // We use the sentinel value 0 to indicate an only declaration.
1853 Record.push_back(0);
1854 }
1855 }
1856
VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl * D)1857 void ASTDeclWriter::VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D) {
1858 Record.writeOMPChildren(D->Data);
1859 VisitDecl(D);
1860 Code = serialization::DECL_OMP_THREADPRIVATE;
1861 }
1862
VisitOMPAllocateDecl(OMPAllocateDecl * D)1863 void ASTDeclWriter::VisitOMPAllocateDecl(OMPAllocateDecl *D) {
1864 Record.writeOMPChildren(D->Data);
1865 VisitDecl(D);
1866 Code = serialization::DECL_OMP_ALLOCATE;
1867 }
1868
VisitOMPRequiresDecl(OMPRequiresDecl * D)1869 void ASTDeclWriter::VisitOMPRequiresDecl(OMPRequiresDecl *D) {
1870 Record.writeOMPChildren(D->Data);
1871 VisitDecl(D);
1872 Code = serialization::DECL_OMP_REQUIRES;
1873 }
1874
VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl * D)1875 void ASTDeclWriter::VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D) {
1876 VisitValueDecl(D);
1877 Record.AddSourceLocation(D->getBeginLoc());
1878 Record.AddStmt(D->getCombinerIn());
1879 Record.AddStmt(D->getCombinerOut());
1880 Record.AddStmt(D->getCombiner());
1881 Record.AddStmt(D->getInitOrig());
1882 Record.AddStmt(D->getInitPriv());
1883 Record.AddStmt(D->getInitializer());
1884 Record.push_back(D->getInitializerKind());
1885 Record.AddDeclRef(D->getPrevDeclInScope());
1886 Code = serialization::DECL_OMP_DECLARE_REDUCTION;
1887 }
1888
VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl * D)1889 void ASTDeclWriter::VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D) {
1890 Record.writeOMPChildren(D->Data);
1891 VisitValueDecl(D);
1892 Record.AddDeclarationName(D->getVarName());
1893 Record.AddDeclRef(D->getPrevDeclInScope());
1894 Code = serialization::DECL_OMP_DECLARE_MAPPER;
1895 }
1896
VisitOMPCapturedExprDecl(OMPCapturedExprDecl * D)1897 void ASTDeclWriter::VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D) {
1898 VisitVarDecl(D);
1899 Code = serialization::DECL_OMP_CAPTUREDEXPR;
1900 }
1901
1902 //===----------------------------------------------------------------------===//
1903 // ASTWriter Implementation
1904 //===----------------------------------------------------------------------===//
1905
WriteDeclAbbrevs()1906 void ASTWriter::WriteDeclAbbrevs() {
1907 using namespace llvm;
1908
1909 std::shared_ptr<BitCodeAbbrev> Abv;
1910
1911 // Abbreviation for DECL_FIELD
1912 Abv = std::make_shared<BitCodeAbbrev>();
1913 Abv->Add(BitCodeAbbrevOp(serialization::DECL_FIELD));
1914 // Decl
1915 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1916 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
1917 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1918 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1919 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1920 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1921 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1922 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1923 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier
1924 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1925 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1926 // NamedDecl
1927 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1928 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1929 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
1930 // ValueDecl
1931 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
1932 // DeclaratorDecl
1933 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc
1934 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
1935 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType
1936 // FieldDecl
1937 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable
1938 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle
1939 // Type Source Info
1940 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
1941 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
1942 DeclFieldAbbrev = Stream.EmitAbbrev(std::move(Abv));
1943
1944 // Abbreviation for DECL_OBJC_IVAR
1945 Abv = std::make_shared<BitCodeAbbrev>();
1946 Abv->Add(BitCodeAbbrevOp(serialization::DECL_OBJC_IVAR));
1947 // Decl
1948 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1949 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
1950 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1951 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1952 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1953 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1954 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1955 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1956 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier
1957 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1958 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1959 // NamedDecl
1960 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1961 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1962 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
1963 // ValueDecl
1964 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
1965 // DeclaratorDecl
1966 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc
1967 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
1968 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType
1969 // FieldDecl
1970 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable
1971 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle
1972 // ObjC Ivar
1973 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getAccessControl
1974 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getSynthesize
1975 // Type Source Info
1976 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
1977 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
1978 DeclObjCIvarAbbrev = Stream.EmitAbbrev(std::move(Abv));
1979
1980 // Abbreviation for DECL_ENUM
1981 Abv = std::make_shared<BitCodeAbbrev>();
1982 Abv->Add(BitCodeAbbrevOp(serialization::DECL_ENUM));
1983 // Redeclarable
1984 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
1985 // Decl
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(0)); // isUsed
1992 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1993 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1994 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
1995 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1996 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1997 // NamedDecl
1998 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1999 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
2000 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
2001 // TypeDecl
2002 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
2003 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref
2004 // TagDecl
2005 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace
2006 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind
2007 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition
2008 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator
2009 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding
2010 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired
2011 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
2012 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
2013 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind
2014 // EnumDecl
2015 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // AddTypeRef
2016 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IntegerType
2017 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getPromotionType
2018 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumPositiveBits
2019 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumNegativeBits
2020 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScoped
2021 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScopedUsingClassTag
2022 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isFixed
2023 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));// ODRHash
2024 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InstantiatedMembEnum
2025 // DC
2026 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset
2027 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset
2028 DeclEnumAbbrev = Stream.EmitAbbrev(std::move(Abv));
2029
2030 // Abbreviation for DECL_RECORD
2031 Abv = std::make_shared<BitCodeAbbrev>();
2032 Abv->Add(BitCodeAbbrevOp(serialization::DECL_RECORD));
2033 // Redeclarable
2034 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
2035 // Decl
2036 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
2037 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
2038 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
2039 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
2040 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
2041 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
2042 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
2043 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
2044 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
2045 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
2046 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
2047 // NamedDecl
2048 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
2049 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
2050 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
2051 // TypeDecl
2052 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
2053 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref
2054 // TagDecl
2055 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace
2056 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind
2057 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition
2058 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator
2059 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding
2060 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired
2061 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
2062 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
2063 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind
2064 // RecordDecl
2065 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // FlexibleArrayMember
2066 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // AnonymousStructUnion
2067 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasObjectMember
2068 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasVolatileMember
2069
2070 // isNonTrivialToPrimitiveDefaultInitialize
2071 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2072 // isNonTrivialToPrimitiveCopy
2073 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2074 // isNonTrivialToPrimitiveDestroy
2075 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2076 // hasNonTrivialToPrimitiveDefaultInitializeCUnion
2077 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2078 // hasNonTrivialToPrimitiveDestructCUnion
2079 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2080 // hasNonTrivialToPrimitiveCopyCUnion
2081 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2082 // isParamDestroyedInCallee
2083 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2084 // getArgPassingRestrictions
2085 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2));
2086
2087 // DC
2088 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset
2089 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset
2090 DeclRecordAbbrev = Stream.EmitAbbrev(std::move(Abv));
2091
2092 // Abbreviation for DECL_PARM_VAR
2093 Abv = std::make_shared<BitCodeAbbrev>();
2094 Abv->Add(BitCodeAbbrevOp(serialization::DECL_PARM_VAR));
2095 // Redeclarable
2096 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
2097 // Decl
2098 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
2099 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
2100 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
2101 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
2102 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
2103 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
2104 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
2105 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
2106 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
2107 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
2108 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
2109 // NamedDecl
2110 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
2111 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
2112 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
2113 // ValueDecl
2114 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2115 // DeclaratorDecl
2116 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc
2117 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
2118 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType
2119 // VarDecl
2120 Abv->Add(BitCodeAbbrevOp(0)); // SClass
2121 Abv->Add(BitCodeAbbrevOp(0)); // TSCSpec
2122 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle
2123 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isARCPseudoStrong
2124 Abv->Add(BitCodeAbbrevOp(0)); // Linkage
2125 Abv->Add(BitCodeAbbrevOp(0)); // HasInit
2126 Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo
2127 // ParmVarDecl
2128 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsObjCMethodParameter
2129 Abv->Add(BitCodeAbbrevOp(0)); // ScopeDepth
2130 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ScopeIndex
2131 Abv->Add(BitCodeAbbrevOp(0)); // ObjCDeclQualifier
2132 Abv->Add(BitCodeAbbrevOp(0)); // KNRPromoted
2133 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedDefaultArg
2134 Abv->Add(BitCodeAbbrevOp(0)); // HasUninstantiatedDefaultArg
2135 // Type Source Info
2136 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
2137 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
2138 DeclParmVarAbbrev = Stream.EmitAbbrev(std::move(Abv));
2139
2140 // Abbreviation for DECL_TYPEDEF
2141 Abv = std::make_shared<BitCodeAbbrev>();
2142 Abv->Add(BitCodeAbbrevOp(serialization::DECL_TYPEDEF));
2143 // Redeclarable
2144 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
2145 // Decl
2146 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
2147 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
2148 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
2149 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
2150 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
2151 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isUsed
2152 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isReferenced
2153 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
2154 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // C++ AccessSpecifier
2155 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
2156 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
2157 // NamedDecl
2158 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
2159 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
2160 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
2161 // TypeDecl
2162 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
2163 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref
2164 // TypedefDecl
2165 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
2166 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
2167 DeclTypedefAbbrev = Stream.EmitAbbrev(std::move(Abv));
2168
2169 // Abbreviation for DECL_VAR
2170 Abv = std::make_shared<BitCodeAbbrev>();
2171 Abv->Add(BitCodeAbbrevOp(serialization::DECL_VAR));
2172 // Redeclarable
2173 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
2174 // Decl
2175 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
2176 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
2177 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
2178 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
2179 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
2180 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
2181 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
2182 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
2183 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
2184 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
2185 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
2186 // NamedDecl
2187 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
2188 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
2189 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
2190 // ValueDecl
2191 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2192 // DeclaratorDecl
2193 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc
2194 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
2195 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType
2196 // VarDecl
2197 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // SClass
2198 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // TSCSpec
2199 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // InitStyle
2200 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isARCPseudoStrong
2201 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsThisDeclarationADemotedDefinition
2202 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isExceptionVariable
2203 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isNRVOVariable
2204 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCXXForRangeDecl
2205 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isObjCForDecl
2206 Abv->Add(BitCodeAbbrevOp(0)); // isInline
2207 Abv->Add(BitCodeAbbrevOp(0)); // isInlineSpecified
2208 Abv->Add(BitCodeAbbrevOp(0)); // isConstexpr
2209 Abv->Add(BitCodeAbbrevOp(0)); // isInitCapture
2210 Abv->Add(BitCodeAbbrevOp(0)); // isPrevDeclInSameScope
2211 Abv->Add(BitCodeAbbrevOp(0)); // ImplicitParamKind
2212 Abv->Add(BitCodeAbbrevOp(0)); // EscapingByref
2213 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage
2214 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // HasConstant*
2215 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // VarKind (local enum)
2216 // Type Source Info
2217 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
2218 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
2219 DeclVarAbbrev = Stream.EmitAbbrev(std::move(Abv));
2220
2221 // Abbreviation for DECL_CXX_METHOD
2222 Abv = std::make_shared<BitCodeAbbrev>();
2223 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CXX_METHOD));
2224 // RedeclarableDecl
2225 Abv->Add(BitCodeAbbrevOp(0)); // CanonicalDecl
2226 // Decl
2227 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
2228 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
2229 Abv->Add(BitCodeAbbrevOp(0)); // Invalid
2230 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
2231 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Implicit
2232 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Used
2233 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Referenced
2234 Abv->Add(BitCodeAbbrevOp(0)); // InObjCContainer
2235 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Access
2236 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModulePrivate
2237 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
2238 // NamedDecl
2239 Abv->Add(BitCodeAbbrevOp(DeclarationName::Identifier)); // NameKind
2240 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Identifier
2241 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
2242 // ValueDecl
2243 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2244 // DeclaratorDecl
2245 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerLocStart
2246 Abv->Add(BitCodeAbbrevOp(0)); // HasExtInfo
2247 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType
2248 // FunctionDecl
2249 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 11)); // IDNS
2250 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // StorageClass
2251 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Inline
2252 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InlineSpecified
2253 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // VirtualAsWritten
2254 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Pure
2255 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedProto
2256 Abv->Add(BitCodeAbbrevOp(1)); // HasWrittenProto
2257 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Deleted
2258 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Trivial
2259 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // TrivialForCall
2260 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Defaulted
2261 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ExplicitlyDefaulted
2262 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ImplicitReturnZero
2263 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Constexpr
2264 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // UsesSEHTry
2265 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // SkippedBody
2266 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // MultiVersion
2267 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // LateParsed
2268 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage
2269 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LocEnd
2270 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // ODRHash
2271 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // TemplateKind
2272 // This Array slurps the rest of the record. Fortunately we want to encode
2273 // (nearly) all the remaining (variable number of) fields in the same way.
2274 //
2275 // This is the function template information if any, then
2276 // NumParams and Params[] from FunctionDecl, and
2277 // NumOverriddenMethods, OverriddenMethods[] from CXXMethodDecl.
2278 //
2279 // Add an AbbrevOp for 'size then elements' and use it here.
2280 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
2281 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6));
2282 DeclCXXMethodAbbrev = Stream.EmitAbbrev(std::move(Abv));
2283
2284 // Abbreviation for EXPR_DECL_REF
2285 Abv = std::make_shared<BitCodeAbbrev>();
2286 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_DECL_REF));
2287 //Stmt
2288 // Expr
2289 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2290 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent
2291 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent
2292 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent
2293 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack
2294 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ContainsErrors
2295 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind
2296 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind
2297 //DeclRefExpr
2298 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HasQualifier
2299 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //GetDeclFound
2300 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ExplicitTemplateArgs
2301 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HadMultipleCandidates
2302 Abv->Add(BitCodeAbbrevOp(0)); // RefersToEnclosingVariableOrCapture
2303 Abv->Add(BitCodeAbbrevOp(0)); // NonOdrUseReason
2304 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclRef
2305 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location
2306 DeclRefExprAbbrev = Stream.EmitAbbrev(std::move(Abv));
2307
2308 // Abbreviation for EXPR_INTEGER_LITERAL
2309 Abv = std::make_shared<BitCodeAbbrev>();
2310 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_INTEGER_LITERAL));
2311 //Stmt
2312 // Expr
2313 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2314 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent
2315 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent
2316 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent
2317 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack
2318 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ContainsErrors
2319 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind
2320 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind
2321 //Integer Literal
2322 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location
2323 Abv->Add(BitCodeAbbrevOp(32)); // Bit Width
2324 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Value
2325 IntegerLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv));
2326
2327 // Abbreviation for EXPR_CHARACTER_LITERAL
2328 Abv = std::make_shared<BitCodeAbbrev>();
2329 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CHARACTER_LITERAL));
2330 //Stmt
2331 // Expr
2332 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2333 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent
2334 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent
2335 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent
2336 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack
2337 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ContainsErrors
2338 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind
2339 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind
2340 //Character Literal
2341 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getValue
2342 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location
2343 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // getKind
2344 CharacterLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv));
2345
2346 // Abbreviation for EXPR_IMPLICIT_CAST
2347 Abv = std::make_shared<BitCodeAbbrev>();
2348 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_IMPLICIT_CAST));
2349 // Stmt
2350 // Expr
2351 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2352 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent
2353 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent
2354 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent
2355 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack
2356 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ContainsErrors
2357 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind
2358 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind
2359 // CastExpr
2360 Abv->Add(BitCodeAbbrevOp(0)); // PathSize
2361 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // HasFPFeatures
2362 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 6)); // CastKind
2363 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // PartOfExplicitCast
2364 // ImplicitCastExpr
2365 ExprImplicitCastAbbrev = Stream.EmitAbbrev(std::move(Abv));
2366
2367 Abv = std::make_shared<BitCodeAbbrev>();
2368 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_LEXICAL));
2369 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2370 DeclContextLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv));
2371
2372 Abv = std::make_shared<BitCodeAbbrev>();
2373 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_VISIBLE));
2374 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2375 DeclContextVisibleLookupAbbrev = Stream.EmitAbbrev(std::move(Abv));
2376 }
2377
2378 /// isRequiredDecl - Check if this is a "required" Decl, which must be seen by
2379 /// consumers of the AST.
2380 ///
2381 /// Such decls will always be deserialized from the AST file, so we would like
2382 /// this to be as restrictive as possible. Currently the predicate is driven by
2383 /// code generation requirements, if other clients have a different notion of
2384 /// what is "required" then we may have to consider an alternate scheme where
2385 /// clients can iterate over the top-level decls and get information on them,
2386 /// without necessary deserializing them. We could explicitly require such
2387 /// clients to use a separate API call to "realize" the decl. This should be
2388 /// relatively painless since they would presumably only do it for top-level
2389 /// decls.
isRequiredDecl(const Decl * D,ASTContext & Context,bool WritingModule)2390 static bool isRequiredDecl(const Decl *D, ASTContext &Context,
2391 bool WritingModule) {
2392 // An ObjCMethodDecl is never considered as "required" because its
2393 // implementation container always is.
2394
2395 // File scoped assembly or obj-c or OMP declare target implementation must be
2396 // seen.
2397 if (isa<FileScopeAsmDecl>(D) || isa<ObjCImplDecl>(D))
2398 return true;
2399
2400 if (WritingModule && isPartOfPerModuleInitializer(D)) {
2401 // These declarations are part of the module initializer, and are emitted
2402 // if and when the module is imported, rather than being emitted eagerly.
2403 return false;
2404 }
2405
2406 return Context.DeclMustBeEmitted(D);
2407 }
2408
WriteDecl(ASTContext & Context,Decl * D)2409 void ASTWriter::WriteDecl(ASTContext &Context, Decl *D) {
2410 PrettyDeclStackTraceEntry CrashInfo(Context, D, SourceLocation(),
2411 "serializing");
2412
2413 // Determine the ID for this declaration.
2414 serialization::DeclID ID;
2415 assert(!D->isFromASTFile() && "should not be emitting imported decl");
2416 serialization::DeclID &IDR = DeclIDs[D];
2417 if (IDR == 0)
2418 IDR = NextDeclID++;
2419
2420 ID = IDR;
2421
2422 assert(ID >= FirstDeclID && "invalid decl ID");
2423
2424 RecordData Record;
2425 ASTDeclWriter W(*this, Context, Record);
2426
2427 // Build a record for this declaration
2428 W.Visit(D);
2429
2430 // Emit this declaration to the bitstream.
2431 uint64_t Offset = W.Emit(D);
2432
2433 // Record the offset for this declaration
2434 SourceLocation Loc = D->getLocation();
2435 unsigned Index = ID - FirstDeclID;
2436 if (DeclOffsets.size() == Index)
2437 DeclOffsets.emplace_back(Loc, Offset, DeclTypesBlockStartOffset);
2438 else if (DeclOffsets.size() < Index) {
2439 // FIXME: Can/should this happen?
2440 DeclOffsets.resize(Index+1);
2441 DeclOffsets[Index].setLocation(Loc);
2442 DeclOffsets[Index].setBitOffset(Offset, DeclTypesBlockStartOffset);
2443 } else {
2444 llvm_unreachable("declarations should be emitted in ID order");
2445 }
2446
2447 SourceManager &SM = Context.getSourceManager();
2448 if (Loc.isValid() && SM.isLocalSourceLocation(Loc))
2449 associateDeclWithFile(D, ID);
2450
2451 // Note declarations that should be deserialized eagerly so that we can add
2452 // them to a record in the AST file later.
2453 if (isRequiredDecl(D, Context, WritingModule))
2454 EagerlyDeserializedDecls.push_back(ID);
2455 }
2456
AddFunctionDefinition(const FunctionDecl * FD)2457 void ASTRecordWriter::AddFunctionDefinition(const FunctionDecl *FD) {
2458 // Switch case IDs are per function body.
2459 Writer->ClearSwitchCaseIDs();
2460
2461 assert(FD->doesThisDeclarationHaveABody());
2462 bool ModulesCodegen = false;
2463 if (!FD->isDependentContext()) {
2464 Optional<GVALinkage> Linkage;
2465 if (Writer->WritingModule &&
2466 Writer->WritingModule->Kind == Module::ModuleInterfaceUnit) {
2467 // When building a C++ Modules TS module interface unit, a strong
2468 // definition in the module interface is provided by the compilation of
2469 // that module interface unit, not by its users. (Inline functions are
2470 // still emitted in module users.)
2471 Linkage = Writer->Context->GetGVALinkageForFunction(FD);
2472 ModulesCodegen = *Linkage == GVA_StrongExternal;
2473 }
2474 if (Writer->Context->getLangOpts().ModulesCodegen ||
2475 (FD->hasAttr<DLLExportAttr>() &&
2476 Writer->Context->getLangOpts().BuildingPCHWithObjectFile)) {
2477
2478 // Under -fmodules-codegen, codegen is performed for all non-internal,
2479 // non-always_inline functions, unless they are available elsewhere.
2480 if (!FD->hasAttr<AlwaysInlineAttr>()) {
2481 if (!Linkage)
2482 Linkage = Writer->Context->GetGVALinkageForFunction(FD);
2483 ModulesCodegen =
2484 *Linkage != GVA_Internal && *Linkage != GVA_AvailableExternally;
2485 }
2486 }
2487 }
2488 Record->push_back(ModulesCodegen);
2489 if (ModulesCodegen)
2490 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(FD));
2491 if (auto *CD = dyn_cast<CXXConstructorDecl>(FD)) {
2492 Record->push_back(CD->getNumCtorInitializers());
2493 if (CD->getNumCtorInitializers())
2494 AddCXXCtorInitializers(
2495 llvm::makeArrayRef(CD->init_begin(), CD->init_end()));
2496 }
2497 AddStmt(FD->getBody());
2498 }
2499