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/DeclContextInternals.h"
17 #include "clang/AST/DeclTemplate.h"
18 #include "clang/AST/DeclVisitor.h"
19 #include "clang/AST/Expr.h"
20 #include "clang/AST/OpenMPClause.h"
21 #include "clang/AST/PrettyDeclStackTrace.h"
22 #include "clang/Basic/SourceManager.h"
23 #include "clang/Serialization/ASTReader.h"
24 #include "clang/Serialization/ASTRecordWriter.h"
25 #include "llvm/Bitstream/BitstreamWriter.h"
26 #include "llvm/Support/ErrorHandling.h"
27 using namespace clang;
28 using namespace serialization;
29
30 //===----------------------------------------------------------------------===//
31 // Declaration serialization
32 //===----------------------------------------------------------------------===//
33
34 namespace clang {
35 class ASTDeclWriter : public DeclVisitor<ASTDeclWriter, void> {
36 ASTWriter &Writer;
37 ASTContext &Context;
38 ASTRecordWriter Record;
39
40 serialization::DeclCode Code;
41 unsigned AbbrevToUse;
42
43 public:
ASTDeclWriter(ASTWriter & Writer,ASTContext & Context,ASTWriter::RecordDataImpl & Record)44 ASTDeclWriter(ASTWriter &Writer, ASTContext &Context,
45 ASTWriter::RecordDataImpl &Record)
46 : Writer(Writer), Context(Context), Record(Writer, Record),
47 Code((serialization::DeclCode)0), AbbrevToUse(0) {}
48
Emit(Decl * D)49 uint64_t Emit(Decl *D) {
50 if (!Code)
51 llvm::report_fatal_error(StringRef("unexpected declaration kind '") +
52 D->getDeclKindName() + "'");
53 return Record.Emit(Code, AbbrevToUse);
54 }
55
56 void Visit(Decl *D);
57
58 void VisitDecl(Decl *D);
59 void VisitPragmaCommentDecl(PragmaCommentDecl *D);
60 void VisitPragmaDetectMismatchDecl(PragmaDetectMismatchDecl *D);
61 void VisitTranslationUnitDecl(TranslationUnitDecl *D);
62 void VisitNamedDecl(NamedDecl *D);
63 void VisitLabelDecl(LabelDecl *LD);
64 void VisitNamespaceDecl(NamespaceDecl *D);
65 void VisitUsingDirectiveDecl(UsingDirectiveDecl *D);
66 void VisitNamespaceAliasDecl(NamespaceAliasDecl *D);
67 void VisitTypeDecl(TypeDecl *D);
68 void VisitTypedefNameDecl(TypedefNameDecl *D);
69 void VisitTypedefDecl(TypedefDecl *D);
70 void VisitTypeAliasDecl(TypeAliasDecl *D);
71 void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *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 VisitIndirectFieldDecl(IndirectFieldDecl *D);
100 void VisitVarDecl(VarDecl *D);
101 void VisitImplicitParamDecl(ImplicitParamDecl *D);
102 void VisitParmVarDecl(ParmVarDecl *D);
103 void VisitDecompositionDecl(DecompositionDecl *D);
104 void VisitBindingDecl(BindingDecl *D);
105 void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D);
106 void VisitTemplateDecl(TemplateDecl *D);
107 void VisitConceptDecl(ConceptDecl *D);
108 void VisitRequiresExprBodyDecl(RequiresExprBodyDecl *D);
109 void VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D);
110 void VisitClassTemplateDecl(ClassTemplateDecl *D);
111 void VisitVarTemplateDecl(VarTemplateDecl *D);
112 void VisitFunctionTemplateDecl(FunctionTemplateDecl *D);
113 void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D);
114 void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D);
115 void VisitUsingDecl(UsingDecl *D);
116 void VisitUsingPackDecl(UsingPackDecl *D);
117 void VisitUsingShadowDecl(UsingShadowDecl *D);
118 void VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl *D);
119 void VisitLinkageSpecDecl(LinkageSpecDecl *D);
120 void VisitExportDecl(ExportDecl *D);
121 void VisitFileScopeAsmDecl(FileScopeAsmDecl *D);
122 void VisitImportDecl(ImportDecl *D);
123 void VisitAccessSpecDecl(AccessSpecDecl *D);
124 void VisitFriendDecl(FriendDecl *D);
125 void VisitFriendTemplateDecl(FriendTemplateDecl *D);
126 void VisitStaticAssertDecl(StaticAssertDecl *D);
127 void VisitBlockDecl(BlockDecl *D);
128 void VisitCapturedDecl(CapturedDecl *D);
129 void VisitEmptyDecl(EmptyDecl *D);
130 void VisitLifetimeExtendedTemporaryDecl(LifetimeExtendedTemporaryDecl *D);
131
132 void VisitDeclContext(DeclContext *DC);
133 template <typename T> void VisitRedeclarable(Redeclarable<T> *D);
134
135
136 // FIXME: Put in the same order is DeclNodes.td?
137 void VisitObjCMethodDecl(ObjCMethodDecl *D);
138 void VisitObjCTypeParamDecl(ObjCTypeParamDecl *D);
139 void VisitObjCContainerDecl(ObjCContainerDecl *D);
140 void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D);
141 void VisitObjCIvarDecl(ObjCIvarDecl *D);
142 void VisitObjCProtocolDecl(ObjCProtocolDecl *D);
143 void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D);
144 void VisitObjCCategoryDecl(ObjCCategoryDecl *D);
145 void VisitObjCImplDecl(ObjCImplDecl *D);
146 void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D);
147 void VisitObjCImplementationDecl(ObjCImplementationDecl *D);
148 void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D);
149 void VisitObjCPropertyDecl(ObjCPropertyDecl *D);
150 void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D);
151 void VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D);
152 void VisitOMPAllocateDecl(OMPAllocateDecl *D);
153 void VisitOMPRequiresDecl(OMPRequiresDecl *D);
154 void VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D);
155 void VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D);
156 void VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D);
157
158 /// Add an Objective-C type parameter list to the given record.
AddObjCTypeParamList(ObjCTypeParamList * typeParams)159 void AddObjCTypeParamList(ObjCTypeParamList *typeParams) {
160 // Empty type parameter list.
161 if (!typeParams) {
162 Record.push_back(0);
163 return;
164 }
165
166 Record.push_back(typeParams->size());
167 for (auto typeParam : *typeParams) {
168 Record.AddDeclRef(typeParam);
169 }
170 Record.AddSourceLocation(typeParams->getLAngleLoc());
171 Record.AddSourceLocation(typeParams->getRAngleLoc());
172 }
173
174 /// Add to the record the first declaration from each module file that
175 /// provides a declaration of D. The intent is to provide a sufficient
176 /// set such that reloading this set will load all current redeclarations.
AddFirstDeclFromEachModule(const Decl * D,bool IncludeLocal)177 void AddFirstDeclFromEachModule(const Decl *D, bool IncludeLocal) {
178 llvm::MapVector<ModuleFile*, const Decl*> Firsts;
179 // FIXME: We can skip entries that we know are implied by others.
180 for (const Decl *R = D->getMostRecentDecl(); R; R = R->getPreviousDecl()) {
181 if (R->isFromASTFile())
182 Firsts[Writer.Chain->getOwningModuleFile(R)] = R;
183 else if (IncludeLocal)
184 Firsts[nullptr] = R;
185 }
186 for (const auto &F : Firsts)
187 Record.AddDeclRef(F.second);
188 }
189
190 /// Get the specialization decl from an entry in the specialization list.
191 template <typename EntryType>
192 typename RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::DeclType *
getSpecializationDecl(EntryType & T)193 getSpecializationDecl(EntryType &T) {
194 return RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::getDecl(&T);
195 }
196
197 /// Get the list of partial specializations from a template's common ptr.
198 template<typename T>
getPartialSpecializations(T * Common)199 decltype(T::PartialSpecializations) &getPartialSpecializations(T *Common) {
200 return Common->PartialSpecializations;
201 }
getPartialSpecializations(FunctionTemplateDecl::Common *)202 ArrayRef<Decl> getPartialSpecializations(FunctionTemplateDecl::Common *) {
203 return None;
204 }
205
206 template<typename DeclTy>
AddTemplateSpecializations(DeclTy * D)207 void AddTemplateSpecializations(DeclTy *D) {
208 auto *Common = D->getCommonPtr();
209
210 // If we have any lazy specializations, and the external AST source is
211 // our chained AST reader, we can just write out the DeclIDs. Otherwise,
212 // we need to resolve them to actual declarations.
213 if (Writer.Chain != Writer.Context->getExternalSource() &&
214 Common->LazySpecializations) {
215 D->LoadLazySpecializations();
216 assert(!Common->LazySpecializations);
217 }
218
219 ArrayRef<DeclID> LazySpecializations;
220 if (auto *LS = Common->LazySpecializations)
221 LazySpecializations = llvm::makeArrayRef(LS + 1, LS[0]);
222
223 // Add a slot to the record for the number of specializations.
224 unsigned I = Record.size();
225 Record.push_back(0);
226
227 // AddFirstDeclFromEachModule might trigger deserialization, invalidating
228 // *Specializations iterators.
229 llvm::SmallVector<const Decl*, 16> Specs;
230 for (auto &Entry : Common->Specializations)
231 Specs.push_back(getSpecializationDecl(Entry));
232 for (auto &Entry : getPartialSpecializations(Common))
233 Specs.push_back(getSpecializationDecl(Entry));
234
235 for (auto *D : Specs) {
236 assert(D->isCanonicalDecl() && "non-canonical decl in set");
237 AddFirstDeclFromEachModule(D, /*IncludeLocal*/true);
238 }
239 Record.append(LazySpecializations.begin(), LazySpecializations.end());
240
241 // Update the size entry we added earlier.
242 Record[I] = Record.size() - I - 1;
243 }
244
245 /// Ensure that this template specialization is associated with the specified
246 /// template on reload.
RegisterTemplateSpecialization(const Decl * Template,const Decl * Specialization)247 void RegisterTemplateSpecialization(const Decl *Template,
248 const Decl *Specialization) {
249 Template = Template->getCanonicalDecl();
250
251 // If the canonical template is local, we'll write out this specialization
252 // when we emit it.
253 // FIXME: We can do the same thing if there is any local declaration of
254 // the template, to avoid emitting an update record.
255 if (!Template->isFromASTFile())
256 return;
257
258 // We only need to associate the first local declaration of the
259 // specialization. The other declarations will get pulled in by it.
260 if (Writer.getFirstLocalDecl(Specialization) != Specialization)
261 return;
262
263 Writer.DeclUpdates[Template].push_back(ASTWriter::DeclUpdate(
264 UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION, Specialization));
265 }
266 };
267 }
268
Visit(Decl * D)269 void ASTDeclWriter::Visit(Decl *D) {
270 DeclVisitor<ASTDeclWriter>::Visit(D);
271
272 // Source locations require array (variable-length) abbreviations. The
273 // abbreviation infrastructure requires that arrays are encoded last, so
274 // we handle it here in the case of those classes derived from DeclaratorDecl
275 if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)) {
276 if (auto *TInfo = DD->getTypeSourceInfo())
277 Record.AddTypeLoc(TInfo->getTypeLoc());
278 }
279
280 // Handle FunctionDecl's body here and write it after all other Stmts/Exprs
281 // have been written. We want it last because we will not read it back when
282 // retrieving it from the AST, we'll just lazily set the offset.
283 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) {
284 Record.push_back(FD->doesThisDeclarationHaveABody());
285 if (FD->doesThisDeclarationHaveABody())
286 Record.AddFunctionDefinition(FD);
287 }
288
289 // If this declaration is also a DeclContext, write blocks for the
290 // declarations that lexically stored inside its context and those
291 // declarations that are visible from its context.
292 if (DeclContext *DC = dyn_cast<DeclContext>(D))
293 VisitDeclContext(DC);
294 }
295
VisitDecl(Decl * D)296 void ASTDeclWriter::VisitDecl(Decl *D) {
297 Record.AddDeclRef(cast_or_null<Decl>(D->getDeclContext()));
298 if (D->getDeclContext() != D->getLexicalDeclContext())
299 Record.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext()));
300 else
301 Record.push_back(0);
302 Record.push_back(D->isInvalidDecl());
303 Record.push_back(D->hasAttrs());
304 if (D->hasAttrs())
305 Record.AddAttributes(D->getAttrs());
306 Record.push_back(D->isImplicit());
307 Record.push_back(D->isUsed(false));
308 Record.push_back(D->isReferenced());
309 Record.push_back(D->isTopLevelDeclInObjCContainer());
310 Record.push_back(D->getAccess());
311 Record.push_back(D->isModulePrivate());
312 Record.push_back(Writer.getSubmoduleID(D->getOwningModule()));
313
314 // If this declaration injected a name into a context different from its
315 // lexical context, and that context is an imported namespace, we need to
316 // update its visible declarations to include this name.
317 //
318 // This happens when we instantiate a class with a friend declaration or a
319 // function with a local extern declaration, for instance.
320 //
321 // FIXME: Can we handle this in AddedVisibleDecl instead?
322 if (D->isOutOfLine()) {
323 auto *DC = D->getDeclContext();
324 while (auto *NS = dyn_cast<NamespaceDecl>(DC->getRedeclContext())) {
325 if (!NS->isFromASTFile())
326 break;
327 Writer.UpdatedDeclContexts.insert(NS->getPrimaryContext());
328 if (!NS->isInlineNamespace())
329 break;
330 DC = NS->getParent();
331 }
332 }
333 }
334
VisitPragmaCommentDecl(PragmaCommentDecl * D)335 void ASTDeclWriter::VisitPragmaCommentDecl(PragmaCommentDecl *D) {
336 StringRef Arg = D->getArg();
337 Record.push_back(Arg.size());
338 VisitDecl(D);
339 Record.AddSourceLocation(D->getBeginLoc());
340 Record.push_back(D->getCommentKind());
341 Record.AddString(Arg);
342 Code = serialization::DECL_PRAGMA_COMMENT;
343 }
344
VisitPragmaDetectMismatchDecl(PragmaDetectMismatchDecl * D)345 void ASTDeclWriter::VisitPragmaDetectMismatchDecl(
346 PragmaDetectMismatchDecl *D) {
347 StringRef Name = D->getName();
348 StringRef Value = D->getValue();
349 Record.push_back(Name.size() + 1 + Value.size());
350 VisitDecl(D);
351 Record.AddSourceLocation(D->getBeginLoc());
352 Record.AddString(Name);
353 Record.AddString(Value);
354 Code = serialization::DECL_PRAGMA_DETECT_MISMATCH;
355 }
356
VisitTranslationUnitDecl(TranslationUnitDecl * D)357 void ASTDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) {
358 llvm_unreachable("Translation units aren't directly serialized");
359 }
360
VisitNamedDecl(NamedDecl * D)361 void ASTDeclWriter::VisitNamedDecl(NamedDecl *D) {
362 VisitDecl(D);
363 Record.AddDeclarationName(D->getDeclName());
364 Record.push_back(needsAnonymousDeclarationNumber(D)
365 ? Writer.getAnonymousDeclarationNumber(D)
366 : 0);
367 }
368
VisitTypeDecl(TypeDecl * D)369 void ASTDeclWriter::VisitTypeDecl(TypeDecl *D) {
370 VisitNamedDecl(D);
371 Record.AddSourceLocation(D->getBeginLoc());
372 Record.AddTypeRef(QualType(D->getTypeForDecl(), 0));
373 }
374
VisitTypedefNameDecl(TypedefNameDecl * D)375 void ASTDeclWriter::VisitTypedefNameDecl(TypedefNameDecl *D) {
376 VisitRedeclarable(D);
377 VisitTypeDecl(D);
378 Record.AddTypeSourceInfo(D->getTypeSourceInfo());
379 Record.push_back(D->isModed());
380 if (D->isModed())
381 Record.AddTypeRef(D->getUnderlyingType());
382 Record.AddDeclRef(D->getAnonDeclWithTypedefName(false));
383 }
384
VisitTypedefDecl(TypedefDecl * D)385 void ASTDeclWriter::VisitTypedefDecl(TypedefDecl *D) {
386 VisitTypedefNameDecl(D);
387 if (D->getDeclContext() == D->getLexicalDeclContext() &&
388 !D->hasAttrs() &&
389 !D->isImplicit() &&
390 D->getFirstDecl() == D->getMostRecentDecl() &&
391 !D->isInvalidDecl() &&
392 !D->isTopLevelDeclInObjCContainer() &&
393 !D->isModulePrivate() &&
394 !needsAnonymousDeclarationNumber(D) &&
395 D->getDeclName().getNameKind() == DeclarationName::Identifier)
396 AbbrevToUse = Writer.getDeclTypedefAbbrev();
397
398 Code = serialization::DECL_TYPEDEF;
399 }
400
VisitTypeAliasDecl(TypeAliasDecl * D)401 void ASTDeclWriter::VisitTypeAliasDecl(TypeAliasDecl *D) {
402 VisitTypedefNameDecl(D);
403 Record.AddDeclRef(D->getDescribedAliasTemplate());
404 Code = serialization::DECL_TYPEALIAS;
405 }
406
VisitTagDecl(TagDecl * D)407 void ASTDeclWriter::VisitTagDecl(TagDecl *D) {
408 VisitRedeclarable(D);
409 VisitTypeDecl(D);
410 Record.push_back(D->getIdentifierNamespace());
411 Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding
412 if (!isa<CXXRecordDecl>(D))
413 Record.push_back(D->isCompleteDefinition());
414 Record.push_back(D->isEmbeddedInDeclarator());
415 Record.push_back(D->isFreeStanding());
416 Record.push_back(D->isCompleteDefinitionRequired());
417 Record.AddSourceRange(D->getBraceRange());
418
419 if (D->hasExtInfo()) {
420 Record.push_back(1);
421 Record.AddQualifierInfo(*D->getExtInfo());
422 } else if (auto *TD = D->getTypedefNameForAnonDecl()) {
423 Record.push_back(2);
424 Record.AddDeclRef(TD);
425 Record.AddIdentifierRef(TD->getDeclName().getAsIdentifierInfo());
426 } else {
427 Record.push_back(0);
428 }
429 }
430
VisitEnumDecl(EnumDecl * D)431 void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) {
432 VisitTagDecl(D);
433 Record.AddTypeSourceInfo(D->getIntegerTypeSourceInfo());
434 if (!D->getIntegerTypeSourceInfo())
435 Record.AddTypeRef(D->getIntegerType());
436 Record.AddTypeRef(D->getPromotionType());
437 Record.push_back(D->getNumPositiveBits());
438 Record.push_back(D->getNumNegativeBits());
439 Record.push_back(D->isScoped());
440 Record.push_back(D->isScopedUsingClassTag());
441 Record.push_back(D->isFixed());
442 Record.push_back(D->getODRHash());
443
444 if (MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo()) {
445 Record.AddDeclRef(MemberInfo->getInstantiatedFrom());
446 Record.push_back(MemberInfo->getTemplateSpecializationKind());
447 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation());
448 } else {
449 Record.AddDeclRef(nullptr);
450 }
451
452 if (D->getDeclContext() == D->getLexicalDeclContext() &&
453 !D->hasAttrs() &&
454 !D->isImplicit() &&
455 !D->isUsed(false) &&
456 !D->hasExtInfo() &&
457 !D->getTypedefNameForAnonDecl() &&
458 D->getFirstDecl() == D->getMostRecentDecl() &&
459 !D->isInvalidDecl() &&
460 !D->isReferenced() &&
461 !D->isTopLevelDeclInObjCContainer() &&
462 D->getAccess() == AS_none &&
463 !D->isModulePrivate() &&
464 !CXXRecordDecl::classofKind(D->getKind()) &&
465 !D->getIntegerTypeSourceInfo() &&
466 !D->getMemberSpecializationInfo() &&
467 !needsAnonymousDeclarationNumber(D) &&
468 D->getDeclName().getNameKind() == DeclarationName::Identifier)
469 AbbrevToUse = Writer.getDeclEnumAbbrev();
470
471 Code = serialization::DECL_ENUM;
472 }
473
VisitRecordDecl(RecordDecl * D)474 void ASTDeclWriter::VisitRecordDecl(RecordDecl *D) {
475 VisitTagDecl(D);
476 Record.push_back(D->hasFlexibleArrayMember());
477 Record.push_back(D->isAnonymousStructOrUnion());
478 Record.push_back(D->hasObjectMember());
479 Record.push_back(D->hasVolatileMember());
480 Record.push_back(D->isNonTrivialToPrimitiveDefaultInitialize());
481 Record.push_back(D->isNonTrivialToPrimitiveCopy());
482 Record.push_back(D->isNonTrivialToPrimitiveDestroy());
483 Record.push_back(D->hasNonTrivialToPrimitiveDefaultInitializeCUnion());
484 Record.push_back(D->hasNonTrivialToPrimitiveDestructCUnion());
485 Record.push_back(D->hasNonTrivialToPrimitiveCopyCUnion());
486 Record.push_back(D->isParamDestroyedInCallee());
487 Record.push_back(D->getArgPassingRestrictions());
488
489 if (D->getDeclContext() == D->getLexicalDeclContext() &&
490 !D->hasAttrs() &&
491 !D->isImplicit() &&
492 !D->isUsed(false) &&
493 !D->hasExtInfo() &&
494 !D->getTypedefNameForAnonDecl() &&
495 D->getFirstDecl() == D->getMostRecentDecl() &&
496 !D->isInvalidDecl() &&
497 !D->isReferenced() &&
498 !D->isTopLevelDeclInObjCContainer() &&
499 D->getAccess() == AS_none &&
500 !D->isModulePrivate() &&
501 !CXXRecordDecl::classofKind(D->getKind()) &&
502 !needsAnonymousDeclarationNumber(D) &&
503 D->getDeclName().getNameKind() == DeclarationName::Identifier)
504 AbbrevToUse = Writer.getDeclRecordAbbrev();
505
506 Code = serialization::DECL_RECORD;
507 }
508
VisitValueDecl(ValueDecl * D)509 void ASTDeclWriter::VisitValueDecl(ValueDecl *D) {
510 VisitNamedDecl(D);
511 Record.AddTypeRef(D->getType());
512 }
513
VisitEnumConstantDecl(EnumConstantDecl * D)514 void ASTDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) {
515 VisitValueDecl(D);
516 Record.push_back(D->getInitExpr()? 1 : 0);
517 if (D->getInitExpr())
518 Record.AddStmt(D->getInitExpr());
519 Record.AddAPSInt(D->getInitVal());
520
521 Code = serialization::DECL_ENUM_CONSTANT;
522 }
523
VisitDeclaratorDecl(DeclaratorDecl * D)524 void ASTDeclWriter::VisitDeclaratorDecl(DeclaratorDecl *D) {
525 VisitValueDecl(D);
526 Record.AddSourceLocation(D->getInnerLocStart());
527 Record.push_back(D->hasExtInfo());
528 if (D->hasExtInfo()) {
529 DeclaratorDecl::ExtInfo *Info = D->getExtInfo();
530 Record.AddQualifierInfo(*Info);
531 Record.AddStmt(Info->TrailingRequiresClause);
532 }
533 // The location information is deferred until the end of the record.
534 Record.AddTypeRef(D->getTypeSourceInfo() ? D->getTypeSourceInfo()->getType()
535 : QualType());
536 }
537
VisitFunctionDecl(FunctionDecl * D)538 void ASTDeclWriter::VisitFunctionDecl(FunctionDecl *D) {
539 VisitRedeclarable(D);
540 VisitDeclaratorDecl(D);
541 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName());
542 Record.push_back(D->getIdentifierNamespace());
543
544 // FunctionDecl's body is handled last at ASTWriterDecl::Visit,
545 // after everything else is written.
546 Record.push_back(static_cast<int>(D->getStorageClass())); // FIXME: stable encoding
547 Record.push_back(D->isInlineSpecified());
548 Record.push_back(D->isInlined());
549 Record.push_back(D->isVirtualAsWritten());
550 Record.push_back(D->isPure());
551 Record.push_back(D->hasInheritedPrototype());
552 Record.push_back(D->hasWrittenPrototype());
553 Record.push_back(D->isDeletedBit());
554 Record.push_back(D->isTrivial());
555 Record.push_back(D->isTrivialForCall());
556 Record.push_back(D->isDefaulted());
557 Record.push_back(D->isExplicitlyDefaulted());
558 Record.push_back(D->hasImplicitReturnZero());
559 Record.push_back(D->getConstexprKind());
560 Record.push_back(D->usesSEHTry());
561 Record.push_back(D->hasSkippedBody());
562 Record.push_back(D->isMultiVersion());
563 Record.push_back(D->isLateTemplateParsed());
564 Record.push_back(D->getLinkageInternal());
565 Record.AddSourceLocation(D->getEndLoc());
566
567 Record.push_back(D->getODRHash());
568 Record.push_back(D->usesFPIntrin());
569
570 if (D->isDefaulted()) {
571 if (auto *FDI = D->getDefaultedFunctionInfo()) {
572 Record.push_back(FDI->getUnqualifiedLookups().size());
573 for (DeclAccessPair P : FDI->getUnqualifiedLookups()) {
574 Record.AddDeclRef(P.getDecl());
575 Record.push_back(P.getAccess());
576 }
577 } else {
578 Record.push_back(0);
579 }
580 }
581
582 Record.push_back(D->getTemplatedKind());
583 switch (D->getTemplatedKind()) {
584 case FunctionDecl::TK_NonTemplate:
585 break;
586 case FunctionDecl::TK_FunctionTemplate:
587 Record.AddDeclRef(D->getDescribedFunctionTemplate());
588 break;
589 case FunctionDecl::TK_MemberSpecialization: {
590 MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo();
591 Record.AddDeclRef(MemberInfo->getInstantiatedFrom());
592 Record.push_back(MemberInfo->getTemplateSpecializationKind());
593 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation());
594 break;
595 }
596 case FunctionDecl::TK_FunctionTemplateSpecialization: {
597 FunctionTemplateSpecializationInfo *
598 FTSInfo = D->getTemplateSpecializationInfo();
599
600 RegisterTemplateSpecialization(FTSInfo->getTemplate(), D);
601
602 Record.AddDeclRef(FTSInfo->getTemplate());
603 Record.push_back(FTSInfo->getTemplateSpecializationKind());
604
605 // Template arguments.
606 Record.AddTemplateArgumentList(FTSInfo->TemplateArguments);
607
608 // Template args as written.
609 Record.push_back(FTSInfo->TemplateArgumentsAsWritten != nullptr);
610 if (FTSInfo->TemplateArgumentsAsWritten) {
611 Record.push_back(FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs);
612 for (int i=0, e = FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs;
613 i!=e; ++i)
614 Record.AddTemplateArgumentLoc(
615 (*FTSInfo->TemplateArgumentsAsWritten)[i]);
616 Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->LAngleLoc);
617 Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->RAngleLoc);
618 }
619
620 Record.AddSourceLocation(FTSInfo->getPointOfInstantiation());
621
622 if (MemberSpecializationInfo *MemberInfo =
623 FTSInfo->getMemberSpecializationInfo()) {
624 Record.push_back(1);
625 Record.AddDeclRef(MemberInfo->getInstantiatedFrom());
626 Record.push_back(MemberInfo->getTemplateSpecializationKind());
627 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation());
628 } else {
629 Record.push_back(0);
630 }
631
632 if (D->isCanonicalDecl()) {
633 // Write the template that contains the specializations set. We will
634 // add a FunctionTemplateSpecializationInfo to it when reading.
635 Record.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl());
636 }
637 break;
638 }
639 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: {
640 DependentFunctionTemplateSpecializationInfo *
641 DFTSInfo = D->getDependentSpecializationInfo();
642
643 // Templates.
644 Record.push_back(DFTSInfo->getNumTemplates());
645 for (int i=0, e = DFTSInfo->getNumTemplates(); i != e; ++i)
646 Record.AddDeclRef(DFTSInfo->getTemplate(i));
647
648 // Templates args.
649 Record.push_back(DFTSInfo->getNumTemplateArgs());
650 for (int i=0, e = DFTSInfo->getNumTemplateArgs(); i != e; ++i)
651 Record.AddTemplateArgumentLoc(DFTSInfo->getTemplateArg(i));
652 Record.AddSourceLocation(DFTSInfo->getLAngleLoc());
653 Record.AddSourceLocation(DFTSInfo->getRAngleLoc());
654 break;
655 }
656 }
657
658 Record.push_back(D->param_size());
659 for (auto P : D->parameters())
660 Record.AddDeclRef(P);
661 Code = serialization::DECL_FUNCTION;
662 }
663
addExplicitSpecifier(ExplicitSpecifier ES,ASTRecordWriter & Record)664 static void addExplicitSpecifier(ExplicitSpecifier ES,
665 ASTRecordWriter &Record) {
666 uint64_t Kind = static_cast<uint64_t>(ES.getKind());
667 Kind = Kind << 1 | static_cast<bool>(ES.getExpr());
668 Record.push_back(Kind);
669 if (ES.getExpr()) {
670 Record.AddStmt(ES.getExpr());
671 }
672 }
673
VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl * D)674 void ASTDeclWriter::VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D) {
675 addExplicitSpecifier(D->getExplicitSpecifier(), Record);
676 VisitFunctionDecl(D);
677 Record.push_back(D->isCopyDeductionCandidate());
678 Code = serialization::DECL_CXX_DEDUCTION_GUIDE;
679 }
680
VisitObjCMethodDecl(ObjCMethodDecl * D)681 void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) {
682 VisitNamedDecl(D);
683 // FIXME: convert to LazyStmtPtr?
684 // Unlike C/C++, method bodies will never be in header files.
685 bool HasBodyStuff = D->getBody() != nullptr;
686 Record.push_back(HasBodyStuff);
687 if (HasBodyStuff) {
688 Record.AddStmt(D->getBody());
689 }
690 Record.AddDeclRef(D->getSelfDecl());
691 Record.AddDeclRef(D->getCmdDecl());
692 Record.push_back(D->isInstanceMethod());
693 Record.push_back(D->isVariadic());
694 Record.push_back(D->isPropertyAccessor());
695 Record.push_back(D->isSynthesizedAccessorStub());
696 Record.push_back(D->isDefined());
697 Record.push_back(D->isOverriding());
698 Record.push_back(D->hasSkippedBody());
699
700 Record.push_back(D->isRedeclaration());
701 Record.push_back(D->hasRedeclaration());
702 if (D->hasRedeclaration()) {
703 assert(Context.getObjCMethodRedeclaration(D));
704 Record.AddDeclRef(Context.getObjCMethodRedeclaration(D));
705 }
706
707 // FIXME: stable encoding for @required/@optional
708 Record.push_back(D->getImplementationControl());
709 // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway/nullability
710 Record.push_back(D->getObjCDeclQualifier());
711 Record.push_back(D->hasRelatedResultType());
712 Record.AddTypeRef(D->getReturnType());
713 Record.AddTypeSourceInfo(D->getReturnTypeSourceInfo());
714 Record.AddSourceLocation(D->getEndLoc());
715 Record.push_back(D->param_size());
716 for (const auto *P : D->parameters())
717 Record.AddDeclRef(P);
718
719 Record.push_back(D->getSelLocsKind());
720 unsigned NumStoredSelLocs = D->getNumStoredSelLocs();
721 SourceLocation *SelLocs = D->getStoredSelLocs();
722 Record.push_back(NumStoredSelLocs);
723 for (unsigned i = 0; i != NumStoredSelLocs; ++i)
724 Record.AddSourceLocation(SelLocs[i]);
725
726 Code = serialization::DECL_OBJC_METHOD;
727 }
728
VisitObjCTypeParamDecl(ObjCTypeParamDecl * D)729 void ASTDeclWriter::VisitObjCTypeParamDecl(ObjCTypeParamDecl *D) {
730 VisitTypedefNameDecl(D);
731 Record.push_back(D->Variance);
732 Record.push_back(D->Index);
733 Record.AddSourceLocation(D->VarianceLoc);
734 Record.AddSourceLocation(D->ColonLoc);
735
736 Code = serialization::DECL_OBJC_TYPE_PARAM;
737 }
738
VisitObjCContainerDecl(ObjCContainerDecl * D)739 void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) {
740 VisitNamedDecl(D);
741 Record.AddSourceLocation(D->getAtStartLoc());
742 Record.AddSourceRange(D->getAtEndRange());
743 // Abstract class (no need to define a stable serialization::DECL code).
744 }
745
VisitObjCInterfaceDecl(ObjCInterfaceDecl * D)746 void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) {
747 VisitRedeclarable(D);
748 VisitObjCContainerDecl(D);
749 Record.AddTypeRef(QualType(D->getTypeForDecl(), 0));
750 AddObjCTypeParamList(D->TypeParamList);
751
752 Record.push_back(D->isThisDeclarationADefinition());
753 if (D->isThisDeclarationADefinition()) {
754 // Write the DefinitionData
755 ObjCInterfaceDecl::DefinitionData &Data = D->data();
756
757 Record.AddTypeSourceInfo(D->getSuperClassTInfo());
758 Record.AddSourceLocation(D->getEndOfDefinitionLoc());
759 Record.push_back(Data.HasDesignatedInitializers);
760
761 // Write out the protocols that are directly referenced by the @interface.
762 Record.push_back(Data.ReferencedProtocols.size());
763 for (const auto *P : D->protocols())
764 Record.AddDeclRef(P);
765 for (const auto &PL : D->protocol_locs())
766 Record.AddSourceLocation(PL);
767
768 // Write out the protocols that are transitively referenced.
769 Record.push_back(Data.AllReferencedProtocols.size());
770 for (ObjCList<ObjCProtocolDecl>::iterator
771 P = Data.AllReferencedProtocols.begin(),
772 PEnd = Data.AllReferencedProtocols.end();
773 P != PEnd; ++P)
774 Record.AddDeclRef(*P);
775
776
777 if (ObjCCategoryDecl *Cat = D->getCategoryListRaw()) {
778 // Ensure that we write out the set of categories for this class.
779 Writer.ObjCClassesWithCategories.insert(D);
780
781 // Make sure that the categories get serialized.
782 for (; Cat; Cat = Cat->getNextClassCategoryRaw())
783 (void)Writer.GetDeclRef(Cat);
784 }
785 }
786
787 Code = serialization::DECL_OBJC_INTERFACE;
788 }
789
VisitObjCIvarDecl(ObjCIvarDecl * D)790 void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) {
791 VisitFieldDecl(D);
792 // FIXME: stable encoding for @public/@private/@protected/@package
793 Record.push_back(D->getAccessControl());
794 Record.push_back(D->getSynthesize());
795
796 if (D->getDeclContext() == D->getLexicalDeclContext() &&
797 !D->hasAttrs() &&
798 !D->isImplicit() &&
799 !D->isUsed(false) &&
800 !D->isInvalidDecl() &&
801 !D->isReferenced() &&
802 !D->isModulePrivate() &&
803 !D->getBitWidth() &&
804 !D->hasExtInfo() &&
805 D->getDeclName())
806 AbbrevToUse = Writer.getDeclObjCIvarAbbrev();
807
808 Code = serialization::DECL_OBJC_IVAR;
809 }
810
VisitObjCProtocolDecl(ObjCProtocolDecl * D)811 void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) {
812 VisitRedeclarable(D);
813 VisitObjCContainerDecl(D);
814
815 Record.push_back(D->isThisDeclarationADefinition());
816 if (D->isThisDeclarationADefinition()) {
817 Record.push_back(D->protocol_size());
818 for (const auto *I : D->protocols())
819 Record.AddDeclRef(I);
820 for (const auto &PL : D->protocol_locs())
821 Record.AddSourceLocation(PL);
822 }
823
824 Code = serialization::DECL_OBJC_PROTOCOL;
825 }
826
VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl * D)827 void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) {
828 VisitFieldDecl(D);
829 Code = serialization::DECL_OBJC_AT_DEFS_FIELD;
830 }
831
VisitObjCCategoryDecl(ObjCCategoryDecl * D)832 void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) {
833 VisitObjCContainerDecl(D);
834 Record.AddSourceLocation(D->getCategoryNameLoc());
835 Record.AddSourceLocation(D->getIvarLBraceLoc());
836 Record.AddSourceLocation(D->getIvarRBraceLoc());
837 Record.AddDeclRef(D->getClassInterface());
838 AddObjCTypeParamList(D->TypeParamList);
839 Record.push_back(D->protocol_size());
840 for (const auto *I : D->protocols())
841 Record.AddDeclRef(I);
842 for (const auto &PL : D->protocol_locs())
843 Record.AddSourceLocation(PL);
844 Code = serialization::DECL_OBJC_CATEGORY;
845 }
846
VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl * D)847 void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) {
848 VisitNamedDecl(D);
849 Record.AddDeclRef(D->getClassInterface());
850 Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS;
851 }
852
VisitObjCPropertyDecl(ObjCPropertyDecl * D)853 void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
854 VisitNamedDecl(D);
855 Record.AddSourceLocation(D->getAtLoc());
856 Record.AddSourceLocation(D->getLParenLoc());
857 Record.AddTypeRef(D->getType());
858 Record.AddTypeSourceInfo(D->getTypeSourceInfo());
859 // FIXME: stable encoding
860 Record.push_back((unsigned)D->getPropertyAttributes());
861 Record.push_back((unsigned)D->getPropertyAttributesAsWritten());
862 // FIXME: stable encoding
863 Record.push_back((unsigned)D->getPropertyImplementation());
864 Record.AddDeclarationName(D->getGetterName());
865 Record.AddSourceLocation(D->getGetterNameLoc());
866 Record.AddDeclarationName(D->getSetterName());
867 Record.AddSourceLocation(D->getSetterNameLoc());
868 Record.AddDeclRef(D->getGetterMethodDecl());
869 Record.AddDeclRef(D->getSetterMethodDecl());
870 Record.AddDeclRef(D->getPropertyIvarDecl());
871 Code = serialization::DECL_OBJC_PROPERTY;
872 }
873
VisitObjCImplDecl(ObjCImplDecl * D)874 void ASTDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) {
875 VisitObjCContainerDecl(D);
876 Record.AddDeclRef(D->getClassInterface());
877 // Abstract class (no need to define a stable serialization::DECL code).
878 }
879
VisitObjCCategoryImplDecl(ObjCCategoryImplDecl * D)880 void ASTDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) {
881 VisitObjCImplDecl(D);
882 Record.AddSourceLocation(D->getCategoryNameLoc());
883 Code = serialization::DECL_OBJC_CATEGORY_IMPL;
884 }
885
VisitObjCImplementationDecl(ObjCImplementationDecl * D)886 void ASTDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) {
887 VisitObjCImplDecl(D);
888 Record.AddDeclRef(D->getSuperClass());
889 Record.AddSourceLocation(D->getSuperClassLoc());
890 Record.AddSourceLocation(D->getIvarLBraceLoc());
891 Record.AddSourceLocation(D->getIvarRBraceLoc());
892 Record.push_back(D->hasNonZeroConstructors());
893 Record.push_back(D->hasDestructors());
894 Record.push_back(D->NumIvarInitializers);
895 if (D->NumIvarInitializers)
896 Record.AddCXXCtorInitializers(
897 llvm::makeArrayRef(D->init_begin(), D->init_end()));
898 Code = serialization::DECL_OBJC_IMPLEMENTATION;
899 }
900
VisitObjCPropertyImplDecl(ObjCPropertyImplDecl * D)901 void ASTDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) {
902 VisitDecl(D);
903 Record.AddSourceLocation(D->getBeginLoc());
904 Record.AddDeclRef(D->getPropertyDecl());
905 Record.AddDeclRef(D->getPropertyIvarDecl());
906 Record.AddSourceLocation(D->getPropertyIvarDeclLoc());
907 Record.AddDeclRef(D->getGetterMethodDecl());
908 Record.AddDeclRef(D->getSetterMethodDecl());
909 Record.AddStmt(D->getGetterCXXConstructor());
910 Record.AddStmt(D->getSetterCXXAssignment());
911 Code = serialization::DECL_OBJC_PROPERTY_IMPL;
912 }
913
VisitFieldDecl(FieldDecl * D)914 void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) {
915 VisitDeclaratorDecl(D);
916 Record.push_back(D->isMutable());
917
918 FieldDecl::InitStorageKind ISK = D->InitStorage.getInt();
919 Record.push_back(ISK);
920 if (ISK == FieldDecl::ISK_CapturedVLAType)
921 Record.AddTypeRef(QualType(D->getCapturedVLAType(), 0));
922 else if (ISK)
923 Record.AddStmt(D->getInClassInitializer());
924
925 Record.AddStmt(D->getBitWidth());
926
927 if (!D->getDeclName())
928 Record.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D));
929
930 if (D->getDeclContext() == D->getLexicalDeclContext() &&
931 !D->hasAttrs() &&
932 !D->isImplicit() &&
933 !D->isUsed(false) &&
934 !D->isInvalidDecl() &&
935 !D->isReferenced() &&
936 !D->isTopLevelDeclInObjCContainer() &&
937 !D->isModulePrivate() &&
938 !D->getBitWidth() &&
939 !D->hasInClassInitializer() &&
940 !D->hasCapturedVLAType() &&
941 !D->hasExtInfo() &&
942 !ObjCIvarDecl::classofKind(D->getKind()) &&
943 !ObjCAtDefsFieldDecl::classofKind(D->getKind()) &&
944 D->getDeclName())
945 AbbrevToUse = Writer.getDeclFieldAbbrev();
946
947 Code = serialization::DECL_FIELD;
948 }
949
VisitMSPropertyDecl(MSPropertyDecl * D)950 void ASTDeclWriter::VisitMSPropertyDecl(MSPropertyDecl *D) {
951 VisitDeclaratorDecl(D);
952 Record.AddIdentifierRef(D->getGetterId());
953 Record.AddIdentifierRef(D->getSetterId());
954 Code = serialization::DECL_MS_PROPERTY;
955 }
956
VisitMSGuidDecl(MSGuidDecl * D)957 void ASTDeclWriter::VisitMSGuidDecl(MSGuidDecl *D) {
958 VisitValueDecl(D);
959 MSGuidDecl::Parts Parts = D->getParts();
960 Record.push_back(Parts.Part1);
961 Record.push_back(Parts.Part2);
962 Record.push_back(Parts.Part3);
963 for (auto C : Parts.Part4And5)
964 Record.push_back(C);
965 Code = serialization::DECL_MS_GUID;
966 }
967
VisitIndirectFieldDecl(IndirectFieldDecl * D)968 void ASTDeclWriter::VisitIndirectFieldDecl(IndirectFieldDecl *D) {
969 VisitValueDecl(D);
970 Record.push_back(D->getChainingSize());
971
972 for (const auto *P : D->chain())
973 Record.AddDeclRef(P);
974 Code = serialization::DECL_INDIRECTFIELD;
975 }
976
VisitVarDecl(VarDecl * D)977 void ASTDeclWriter::VisitVarDecl(VarDecl *D) {
978 VisitRedeclarable(D);
979 VisitDeclaratorDecl(D);
980 Record.push_back(D->getStorageClass());
981 Record.push_back(D->getTSCSpec());
982 Record.push_back(D->getInitStyle());
983 Record.push_back(D->isARCPseudoStrong());
984 if (!isa<ParmVarDecl>(D)) {
985 Record.push_back(D->isThisDeclarationADemotedDefinition());
986 Record.push_back(D->isExceptionVariable());
987 Record.push_back(D->isNRVOVariable());
988 Record.push_back(D->isCXXForRangeDecl());
989 Record.push_back(D->isObjCForDecl());
990 Record.push_back(D->isInline());
991 Record.push_back(D->isInlineSpecified());
992 Record.push_back(D->isConstexpr());
993 Record.push_back(D->isInitCapture());
994 Record.push_back(D->isPreviousDeclInSameBlockScope());
995 if (const auto *IPD = dyn_cast<ImplicitParamDecl>(D))
996 Record.push_back(static_cast<unsigned>(IPD->getParameterKind()));
997 else
998 Record.push_back(0);
999 Record.push_back(D->isEscapingByref());
1000 }
1001 Record.push_back(D->getLinkageInternal());
1002
1003 if (D->getInit()) {
1004 if (!D->isInitKnownICE())
1005 Record.push_back(1);
1006 else {
1007 Record.push_back(
1008 2 |
1009 (D->isInitICE() ? 1 : 0) |
1010 (D->ensureEvaluatedStmt()->HasConstantDestruction ? 4 : 0));
1011 }
1012 Record.AddStmt(D->getInit());
1013 } else {
1014 Record.push_back(0);
1015 }
1016
1017 if (D->hasAttr<BlocksAttr>() && D->getType()->getAsCXXRecordDecl()) {
1018 BlockVarCopyInit Init = Writer.Context->getBlockVarCopyInit(D);
1019 Record.AddStmt(Init.getCopyExpr());
1020 if (Init.getCopyExpr())
1021 Record.push_back(Init.canThrow());
1022 }
1023
1024 if (D->getStorageDuration() == SD_Static) {
1025 bool ModulesCodegen = false;
1026 if (Writer.WritingModule &&
1027 !D->getDescribedVarTemplate() && !D->getMemberSpecializationInfo() &&
1028 !isa<VarTemplateSpecializationDecl>(D)) {
1029 // When building a C++ Modules TS module interface unit, a strong
1030 // definition in the module interface is provided by the compilation of
1031 // that module interface unit, not by its users. (Inline variables are
1032 // still emitted in module users.)
1033 ModulesCodegen =
1034 (Writer.WritingModule->Kind == Module::ModuleInterfaceUnit &&
1035 Writer.Context->GetGVALinkageForVariable(D) == GVA_StrongExternal);
1036 }
1037 Record.push_back(ModulesCodegen);
1038 if (ModulesCodegen)
1039 Writer.ModularCodegenDecls.push_back(Writer.GetDeclRef(D));
1040 }
1041
1042 enum {
1043 VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization
1044 };
1045 if (VarTemplateDecl *TemplD = D->getDescribedVarTemplate()) {
1046 Record.push_back(VarTemplate);
1047 Record.AddDeclRef(TemplD);
1048 } else if (MemberSpecializationInfo *SpecInfo
1049 = D->getMemberSpecializationInfo()) {
1050 Record.push_back(StaticDataMemberSpecialization);
1051 Record.AddDeclRef(SpecInfo->getInstantiatedFrom());
1052 Record.push_back(SpecInfo->getTemplateSpecializationKind());
1053 Record.AddSourceLocation(SpecInfo->getPointOfInstantiation());
1054 } else {
1055 Record.push_back(VarNotTemplate);
1056 }
1057
1058 if (D->getDeclContext() == D->getLexicalDeclContext() &&
1059 !D->hasAttrs() &&
1060 !D->isImplicit() &&
1061 !D->isUsed(false) &&
1062 !D->isInvalidDecl() &&
1063 !D->isReferenced() &&
1064 !D->isTopLevelDeclInObjCContainer() &&
1065 D->getAccess() == AS_none &&
1066 !D->isModulePrivate() &&
1067 !needsAnonymousDeclarationNumber(D) &&
1068 D->getDeclName().getNameKind() == DeclarationName::Identifier &&
1069 !D->hasExtInfo() &&
1070 D->getFirstDecl() == D->getMostRecentDecl() &&
1071 D->getKind() == Decl::Var &&
1072 !D->isInline() &&
1073 !D->isConstexpr() &&
1074 !D->isInitCapture() &&
1075 !D->isPreviousDeclInSameBlockScope() &&
1076 !(D->hasAttr<BlocksAttr>() && D->getType()->getAsCXXRecordDecl()) &&
1077 !D->isEscapingByref() &&
1078 D->getStorageDuration() != SD_Static &&
1079 !D->getMemberSpecializationInfo())
1080 AbbrevToUse = Writer.getDeclVarAbbrev();
1081
1082 Code = serialization::DECL_VAR;
1083 }
1084
VisitImplicitParamDecl(ImplicitParamDecl * D)1085 void ASTDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) {
1086 VisitVarDecl(D);
1087 Code = serialization::DECL_IMPLICIT_PARAM;
1088 }
1089
VisitParmVarDecl(ParmVarDecl * D)1090 void ASTDeclWriter::VisitParmVarDecl(ParmVarDecl *D) {
1091 VisitVarDecl(D);
1092 Record.push_back(D->isObjCMethodParameter());
1093 Record.push_back(D->getFunctionScopeDepth());
1094 Record.push_back(D->getFunctionScopeIndex());
1095 Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding
1096 Record.push_back(D->isKNRPromoted());
1097 Record.push_back(D->hasInheritedDefaultArg());
1098 Record.push_back(D->hasUninstantiatedDefaultArg());
1099 if (D->hasUninstantiatedDefaultArg())
1100 Record.AddStmt(D->getUninstantiatedDefaultArg());
1101 Code = serialization::DECL_PARM_VAR;
1102
1103 // If the assumptions about the DECL_PARM_VAR abbrev are true, use it. Here
1104 // we dynamically check for the properties that we optimize for, but don't
1105 // know are true of all PARM_VAR_DECLs.
1106 if (D->getDeclContext() == D->getLexicalDeclContext() &&
1107 !D->hasAttrs() &&
1108 !D->hasExtInfo() &&
1109 !D->isImplicit() &&
1110 !D->isUsed(false) &&
1111 !D->isInvalidDecl() &&
1112 !D->isReferenced() &&
1113 D->getAccess() == AS_none &&
1114 !D->isModulePrivate() &&
1115 D->getStorageClass() == 0 &&
1116 D->getInitStyle() == VarDecl::CInit && // Can params have anything else?
1117 D->getFunctionScopeDepth() == 0 &&
1118 D->getObjCDeclQualifier() == 0 &&
1119 !D->isKNRPromoted() &&
1120 !D->hasInheritedDefaultArg() &&
1121 D->getInit() == nullptr &&
1122 !D->hasUninstantiatedDefaultArg()) // No default expr.
1123 AbbrevToUse = Writer.getDeclParmVarAbbrev();
1124
1125 // Check things we know are true of *every* PARM_VAR_DECL, which is more than
1126 // just us assuming it.
1127 assert(!D->getTSCSpec() && "PARM_VAR_DECL can't use TLS");
1128 assert(!D->isThisDeclarationADemotedDefinition()
1129 && "PARM_VAR_DECL can't be demoted definition.");
1130 assert(D->getAccess() == AS_none && "PARM_VAR_DECL can't be public/private");
1131 assert(!D->isExceptionVariable() && "PARM_VAR_DECL can't be exception var");
1132 assert(D->getPreviousDecl() == nullptr && "PARM_VAR_DECL can't be redecl");
1133 assert(!D->isStaticDataMember() &&
1134 "PARM_VAR_DECL can't be static data member");
1135 }
1136
VisitDecompositionDecl(DecompositionDecl * D)1137 void ASTDeclWriter::VisitDecompositionDecl(DecompositionDecl *D) {
1138 // Record the number of bindings first to simplify deserialization.
1139 Record.push_back(D->bindings().size());
1140
1141 VisitVarDecl(D);
1142 for (auto *B : D->bindings())
1143 Record.AddDeclRef(B);
1144 Code = serialization::DECL_DECOMPOSITION;
1145 }
1146
VisitBindingDecl(BindingDecl * D)1147 void ASTDeclWriter::VisitBindingDecl(BindingDecl *D) {
1148 VisitValueDecl(D);
1149 Record.AddStmt(D->getBinding());
1150 Code = serialization::DECL_BINDING;
1151 }
1152
VisitFileScopeAsmDecl(FileScopeAsmDecl * D)1153 void ASTDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) {
1154 VisitDecl(D);
1155 Record.AddStmt(D->getAsmString());
1156 Record.AddSourceLocation(D->getRParenLoc());
1157 Code = serialization::DECL_FILE_SCOPE_ASM;
1158 }
1159
VisitEmptyDecl(EmptyDecl * D)1160 void ASTDeclWriter::VisitEmptyDecl(EmptyDecl *D) {
1161 VisitDecl(D);
1162 Code = serialization::DECL_EMPTY;
1163 }
1164
VisitLifetimeExtendedTemporaryDecl(LifetimeExtendedTemporaryDecl * D)1165 void ASTDeclWriter::VisitLifetimeExtendedTemporaryDecl(
1166 LifetimeExtendedTemporaryDecl *D) {
1167 VisitDecl(D);
1168 Record.AddDeclRef(D->getExtendingDecl());
1169 Record.AddStmt(D->getTemporaryExpr());
1170 Record.push_back(static_cast<bool>(D->getValue()));
1171 if (D->getValue())
1172 Record.AddAPValue(*D->getValue());
1173 Record.push_back(D->getManglingNumber());
1174 Code = serialization::DECL_LIFETIME_EXTENDED_TEMPORARY;
1175 }
VisitBlockDecl(BlockDecl * D)1176 void ASTDeclWriter::VisitBlockDecl(BlockDecl *D) {
1177 VisitDecl(D);
1178 Record.AddStmt(D->getBody());
1179 Record.AddTypeSourceInfo(D->getSignatureAsWritten());
1180 Record.push_back(D->param_size());
1181 for (ParmVarDecl *P : D->parameters())
1182 Record.AddDeclRef(P);
1183 Record.push_back(D->isVariadic());
1184 Record.push_back(D->blockMissingReturnType());
1185 Record.push_back(D->isConversionFromLambda());
1186 Record.push_back(D->doesNotEscape());
1187 Record.push_back(D->canAvoidCopyToHeap());
1188 Record.push_back(D->capturesCXXThis());
1189 Record.push_back(D->getNumCaptures());
1190 for (const auto &capture : D->captures()) {
1191 Record.AddDeclRef(capture.getVariable());
1192
1193 unsigned flags = 0;
1194 if (capture.isByRef()) flags |= 1;
1195 if (capture.isNested()) flags |= 2;
1196 if (capture.hasCopyExpr()) flags |= 4;
1197 Record.push_back(flags);
1198
1199 if (capture.hasCopyExpr()) Record.AddStmt(capture.getCopyExpr());
1200 }
1201
1202 Code = serialization::DECL_BLOCK;
1203 }
1204
VisitCapturedDecl(CapturedDecl * CD)1205 void ASTDeclWriter::VisitCapturedDecl(CapturedDecl *CD) {
1206 Record.push_back(CD->getNumParams());
1207 VisitDecl(CD);
1208 Record.push_back(CD->getContextParamPosition());
1209 Record.push_back(CD->isNothrow() ? 1 : 0);
1210 // Body is stored by VisitCapturedStmt.
1211 for (unsigned I = 0; I < CD->getNumParams(); ++I)
1212 Record.AddDeclRef(CD->getParam(I));
1213 Code = serialization::DECL_CAPTURED;
1214 }
1215
VisitLinkageSpecDecl(LinkageSpecDecl * D)1216 void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) {
1217 VisitDecl(D);
1218 Record.push_back(D->getLanguage());
1219 Record.AddSourceLocation(D->getExternLoc());
1220 Record.AddSourceLocation(D->getRBraceLoc());
1221 Code = serialization::DECL_LINKAGE_SPEC;
1222 }
1223
VisitExportDecl(ExportDecl * D)1224 void ASTDeclWriter::VisitExportDecl(ExportDecl *D) {
1225 VisitDecl(D);
1226 Record.AddSourceLocation(D->getRBraceLoc());
1227 Code = serialization::DECL_EXPORT;
1228 }
1229
VisitLabelDecl(LabelDecl * D)1230 void ASTDeclWriter::VisitLabelDecl(LabelDecl *D) {
1231 VisitNamedDecl(D);
1232 Record.AddSourceLocation(D->getBeginLoc());
1233 Code = serialization::DECL_LABEL;
1234 }
1235
1236
VisitNamespaceDecl(NamespaceDecl * D)1237 void ASTDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) {
1238 VisitRedeclarable(D);
1239 VisitNamedDecl(D);
1240 Record.push_back(D->isInline());
1241 Record.AddSourceLocation(D->getBeginLoc());
1242 Record.AddSourceLocation(D->getRBraceLoc());
1243
1244 if (D->isOriginalNamespace())
1245 Record.AddDeclRef(D->getAnonymousNamespace());
1246 Code = serialization::DECL_NAMESPACE;
1247
1248 if (Writer.hasChain() && D->isAnonymousNamespace() &&
1249 D == D->getMostRecentDecl()) {
1250 // This is a most recent reopening of the anonymous namespace. If its parent
1251 // is in a previous PCH (or is the TU), mark that parent for update, because
1252 // the original namespace always points to the latest re-opening of its
1253 // anonymous namespace.
1254 Decl *Parent = cast<Decl>(
1255 D->getParent()->getRedeclContext()->getPrimaryContext());
1256 if (Parent->isFromASTFile() || isa<TranslationUnitDecl>(Parent)) {
1257 Writer.DeclUpdates[Parent].push_back(
1258 ASTWriter::DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, D));
1259 }
1260 }
1261 }
1262
VisitNamespaceAliasDecl(NamespaceAliasDecl * D)1263 void ASTDeclWriter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) {
1264 VisitRedeclarable(D);
1265 VisitNamedDecl(D);
1266 Record.AddSourceLocation(D->getNamespaceLoc());
1267 Record.AddSourceLocation(D->getTargetNameLoc());
1268 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc());
1269 Record.AddDeclRef(D->getNamespace());
1270 Code = serialization::DECL_NAMESPACE_ALIAS;
1271 }
1272
VisitUsingDecl(UsingDecl * D)1273 void ASTDeclWriter::VisitUsingDecl(UsingDecl *D) {
1274 VisitNamedDecl(D);
1275 Record.AddSourceLocation(D->getUsingLoc());
1276 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc());
1277 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName());
1278 Record.AddDeclRef(D->FirstUsingShadow.getPointer());
1279 Record.push_back(D->hasTypename());
1280 Record.AddDeclRef(Context.getInstantiatedFromUsingDecl(D));
1281 Code = serialization::DECL_USING;
1282 }
1283
VisitUsingPackDecl(UsingPackDecl * D)1284 void ASTDeclWriter::VisitUsingPackDecl(UsingPackDecl *D) {
1285 Record.push_back(D->NumExpansions);
1286 VisitNamedDecl(D);
1287 Record.AddDeclRef(D->getInstantiatedFromUsingDecl());
1288 for (auto *E : D->expansions())
1289 Record.AddDeclRef(E);
1290 Code = serialization::DECL_USING_PACK;
1291 }
1292
VisitUsingShadowDecl(UsingShadowDecl * D)1293 void ASTDeclWriter::VisitUsingShadowDecl(UsingShadowDecl *D) {
1294 VisitRedeclarable(D);
1295 VisitNamedDecl(D);
1296 Record.AddDeclRef(D->getTargetDecl());
1297 Record.push_back(D->getIdentifierNamespace());
1298 Record.AddDeclRef(D->UsingOrNextShadow);
1299 Record.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D));
1300 Code = serialization::DECL_USING_SHADOW;
1301 }
1302
VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl * D)1303 void ASTDeclWriter::VisitConstructorUsingShadowDecl(
1304 ConstructorUsingShadowDecl *D) {
1305 VisitUsingShadowDecl(D);
1306 Record.AddDeclRef(D->NominatedBaseClassShadowDecl);
1307 Record.AddDeclRef(D->ConstructedBaseClassShadowDecl);
1308 Record.push_back(D->IsVirtual);
1309 Code = serialization::DECL_CONSTRUCTOR_USING_SHADOW;
1310 }
1311
VisitUsingDirectiveDecl(UsingDirectiveDecl * D)1312 void ASTDeclWriter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) {
1313 VisitNamedDecl(D);
1314 Record.AddSourceLocation(D->getUsingLoc());
1315 Record.AddSourceLocation(D->getNamespaceKeyLocation());
1316 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc());
1317 Record.AddDeclRef(D->getNominatedNamespace());
1318 Record.AddDeclRef(dyn_cast<Decl>(D->getCommonAncestor()));
1319 Code = serialization::DECL_USING_DIRECTIVE;
1320 }
1321
VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl * D)1322 void ASTDeclWriter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) {
1323 VisitValueDecl(D);
1324 Record.AddSourceLocation(D->getUsingLoc());
1325 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc());
1326 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName());
1327 Record.AddSourceLocation(D->getEllipsisLoc());
1328 Code = serialization::DECL_UNRESOLVED_USING_VALUE;
1329 }
1330
VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl * D)1331 void ASTDeclWriter::VisitUnresolvedUsingTypenameDecl(
1332 UnresolvedUsingTypenameDecl *D) {
1333 VisitTypeDecl(D);
1334 Record.AddSourceLocation(D->getTypenameLoc());
1335 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc());
1336 Record.AddSourceLocation(D->getEllipsisLoc());
1337 Code = serialization::DECL_UNRESOLVED_USING_TYPENAME;
1338 }
1339
VisitCXXRecordDecl(CXXRecordDecl * D)1340 void ASTDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) {
1341 VisitRecordDecl(D);
1342
1343 enum {
1344 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization
1345 };
1346 if (ClassTemplateDecl *TemplD = D->getDescribedClassTemplate()) {
1347 Record.push_back(CXXRecTemplate);
1348 Record.AddDeclRef(TemplD);
1349 } else if (MemberSpecializationInfo *MSInfo
1350 = D->getMemberSpecializationInfo()) {
1351 Record.push_back(CXXRecMemberSpecialization);
1352 Record.AddDeclRef(MSInfo->getInstantiatedFrom());
1353 Record.push_back(MSInfo->getTemplateSpecializationKind());
1354 Record.AddSourceLocation(MSInfo->getPointOfInstantiation());
1355 } else {
1356 Record.push_back(CXXRecNotTemplate);
1357 }
1358
1359 Record.push_back(D->isThisDeclarationADefinition());
1360 if (D->isThisDeclarationADefinition())
1361 Record.AddCXXDefinitionData(D);
1362
1363 // Store (what we currently believe to be) the key function to avoid
1364 // deserializing every method so we can compute it.
1365 if (D->isCompleteDefinition())
1366 Record.AddDeclRef(Context.getCurrentKeyFunction(D));
1367
1368 Code = serialization::DECL_CXX_RECORD;
1369 }
1370
VisitCXXMethodDecl(CXXMethodDecl * D)1371 void ASTDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) {
1372 VisitFunctionDecl(D);
1373 if (D->isCanonicalDecl()) {
1374 Record.push_back(D->size_overridden_methods());
1375 for (const CXXMethodDecl *MD : D->overridden_methods())
1376 Record.AddDeclRef(MD);
1377 } else {
1378 // We only need to record overridden methods once for the canonical decl.
1379 Record.push_back(0);
1380 }
1381
1382 if (D->getDeclContext() == D->getLexicalDeclContext() &&
1383 D->getFirstDecl() == D->getMostRecentDecl() &&
1384 !D->isInvalidDecl() &&
1385 !D->hasAttrs() &&
1386 !D->isTopLevelDeclInObjCContainer() &&
1387 D->getDeclName().getNameKind() == DeclarationName::Identifier &&
1388 !D->hasExtInfo() &&
1389 !D->hasInheritedPrototype() &&
1390 D->hasWrittenPrototype())
1391 AbbrevToUse = Writer.getDeclCXXMethodAbbrev();
1392
1393 Code = serialization::DECL_CXX_METHOD;
1394 }
1395
VisitCXXConstructorDecl(CXXConstructorDecl * D)1396 void ASTDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) {
1397 Record.push_back(D->getTraillingAllocKind());
1398 addExplicitSpecifier(D->getExplicitSpecifier(), Record);
1399 if (auto Inherited = D->getInheritedConstructor()) {
1400 Record.AddDeclRef(Inherited.getShadowDecl());
1401 Record.AddDeclRef(Inherited.getConstructor());
1402 }
1403
1404 VisitCXXMethodDecl(D);
1405 Code = serialization::DECL_CXX_CONSTRUCTOR;
1406 }
1407
VisitCXXDestructorDecl(CXXDestructorDecl * D)1408 void ASTDeclWriter::VisitCXXDestructorDecl(CXXDestructorDecl *D) {
1409 VisitCXXMethodDecl(D);
1410
1411 Record.AddDeclRef(D->getOperatorDelete());
1412 if (D->getOperatorDelete())
1413 Record.AddStmt(D->getOperatorDeleteThisArg());
1414
1415 Code = serialization::DECL_CXX_DESTRUCTOR;
1416 }
1417
VisitCXXConversionDecl(CXXConversionDecl * D)1418 void ASTDeclWriter::VisitCXXConversionDecl(CXXConversionDecl *D) {
1419 addExplicitSpecifier(D->getExplicitSpecifier(), Record);
1420 VisitCXXMethodDecl(D);
1421 Code = serialization::DECL_CXX_CONVERSION;
1422 }
1423
VisitImportDecl(ImportDecl * D)1424 void ASTDeclWriter::VisitImportDecl(ImportDecl *D) {
1425 VisitDecl(D);
1426 Record.push_back(Writer.getSubmoduleID(D->getImportedModule()));
1427 ArrayRef<SourceLocation> IdentifierLocs = D->getIdentifierLocs();
1428 Record.push_back(!IdentifierLocs.empty());
1429 if (IdentifierLocs.empty()) {
1430 Record.AddSourceLocation(D->getEndLoc());
1431 Record.push_back(1);
1432 } else {
1433 for (unsigned I = 0, N = IdentifierLocs.size(); I != N; ++I)
1434 Record.AddSourceLocation(IdentifierLocs[I]);
1435 Record.push_back(IdentifierLocs.size());
1436 }
1437 // Note: the number of source locations must always be the last element in
1438 // the record.
1439 Code = serialization::DECL_IMPORT;
1440 }
1441
VisitAccessSpecDecl(AccessSpecDecl * D)1442 void ASTDeclWriter::VisitAccessSpecDecl(AccessSpecDecl *D) {
1443 VisitDecl(D);
1444 Record.AddSourceLocation(D->getColonLoc());
1445 Code = serialization::DECL_ACCESS_SPEC;
1446 }
1447
VisitFriendDecl(FriendDecl * D)1448 void ASTDeclWriter::VisitFriendDecl(FriendDecl *D) {
1449 // Record the number of friend type template parameter lists here
1450 // so as to simplify memory allocation during deserialization.
1451 Record.push_back(D->NumTPLists);
1452 VisitDecl(D);
1453 bool hasFriendDecl = D->Friend.is<NamedDecl*>();
1454 Record.push_back(hasFriendDecl);
1455 if (hasFriendDecl)
1456 Record.AddDeclRef(D->getFriendDecl());
1457 else
1458 Record.AddTypeSourceInfo(D->getFriendType());
1459 for (unsigned i = 0; i < D->NumTPLists; ++i)
1460 Record.AddTemplateParameterList(D->getFriendTypeTemplateParameterList(i));
1461 Record.AddDeclRef(D->getNextFriend());
1462 Record.push_back(D->UnsupportedFriend);
1463 Record.AddSourceLocation(D->FriendLoc);
1464 Code = serialization::DECL_FRIEND;
1465 }
1466
VisitFriendTemplateDecl(FriendTemplateDecl * D)1467 void ASTDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) {
1468 VisitDecl(D);
1469 Record.push_back(D->getNumTemplateParameters());
1470 for (unsigned i = 0, e = D->getNumTemplateParameters(); i != e; ++i)
1471 Record.AddTemplateParameterList(D->getTemplateParameterList(i));
1472 Record.push_back(D->getFriendDecl() != nullptr);
1473 if (D->getFriendDecl())
1474 Record.AddDeclRef(D->getFriendDecl());
1475 else
1476 Record.AddTypeSourceInfo(D->getFriendType());
1477 Record.AddSourceLocation(D->getFriendLoc());
1478 Code = serialization::DECL_FRIEND_TEMPLATE;
1479 }
1480
VisitTemplateDecl(TemplateDecl * D)1481 void ASTDeclWriter::VisitTemplateDecl(TemplateDecl *D) {
1482 VisitNamedDecl(D);
1483
1484 Record.AddDeclRef(D->getTemplatedDecl());
1485 Record.AddTemplateParameterList(D->getTemplateParameters());
1486 }
1487
VisitConceptDecl(ConceptDecl * D)1488 void ASTDeclWriter::VisitConceptDecl(ConceptDecl *D) {
1489 VisitTemplateDecl(D);
1490 Record.AddStmt(D->getConstraintExpr());
1491 Code = serialization::DECL_CONCEPT;
1492 }
1493
VisitRequiresExprBodyDecl(RequiresExprBodyDecl * D)1494 void ASTDeclWriter::VisitRequiresExprBodyDecl(RequiresExprBodyDecl *D) {
1495 Code = serialization::DECL_REQUIRES_EXPR_BODY;
1496 }
1497
VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl * D)1498 void ASTDeclWriter::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) {
1499 VisitRedeclarable(D);
1500
1501 // Emit data to initialize CommonOrPrev before VisitTemplateDecl so that
1502 // getCommonPtr() can be used while this is still initializing.
1503 if (D->isFirstDecl()) {
1504 // This declaration owns the 'common' pointer, so serialize that data now.
1505 Record.AddDeclRef(D->getInstantiatedFromMemberTemplate());
1506 if (D->getInstantiatedFromMemberTemplate())
1507 Record.push_back(D->isMemberSpecialization());
1508 }
1509
1510 VisitTemplateDecl(D);
1511 Record.push_back(D->getIdentifierNamespace());
1512 }
1513
VisitClassTemplateDecl(ClassTemplateDecl * D)1514 void ASTDeclWriter::VisitClassTemplateDecl(ClassTemplateDecl *D) {
1515 VisitRedeclarableTemplateDecl(D);
1516
1517 if (D->isFirstDecl())
1518 AddTemplateSpecializations(D);
1519 Code = serialization::DECL_CLASS_TEMPLATE;
1520 }
1521
VisitClassTemplateSpecializationDecl(ClassTemplateSpecializationDecl * D)1522 void ASTDeclWriter::VisitClassTemplateSpecializationDecl(
1523 ClassTemplateSpecializationDecl *D) {
1524 RegisterTemplateSpecialization(D->getSpecializedTemplate(), D);
1525
1526 VisitCXXRecordDecl(D);
1527
1528 llvm::PointerUnion<ClassTemplateDecl *,
1529 ClassTemplatePartialSpecializationDecl *> InstFrom
1530 = D->getSpecializedTemplateOrPartial();
1531 if (Decl *InstFromD = InstFrom.dyn_cast<ClassTemplateDecl *>()) {
1532 Record.AddDeclRef(InstFromD);
1533 } else {
1534 Record.AddDeclRef(InstFrom.get<ClassTemplatePartialSpecializationDecl *>());
1535 Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs());
1536 }
1537
1538 Record.AddTemplateArgumentList(&D->getTemplateArgs());
1539 Record.AddSourceLocation(D->getPointOfInstantiation());
1540 Record.push_back(D->getSpecializationKind());
1541 Record.push_back(D->isCanonicalDecl());
1542
1543 if (D->isCanonicalDecl()) {
1544 // When reading, we'll add it to the folding set of the following template.
1545 Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl());
1546 }
1547
1548 // Explicit info.
1549 Record.AddTypeSourceInfo(D->getTypeAsWritten());
1550 if (D->getTypeAsWritten()) {
1551 Record.AddSourceLocation(D->getExternLoc());
1552 Record.AddSourceLocation(D->getTemplateKeywordLoc());
1553 }
1554
1555 Code = serialization::DECL_CLASS_TEMPLATE_SPECIALIZATION;
1556 }
1557
VisitClassTemplatePartialSpecializationDecl(ClassTemplatePartialSpecializationDecl * D)1558 void ASTDeclWriter::VisitClassTemplatePartialSpecializationDecl(
1559 ClassTemplatePartialSpecializationDecl *D) {
1560 Record.AddTemplateParameterList(D->getTemplateParameters());
1561 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten());
1562
1563 VisitClassTemplateSpecializationDecl(D);
1564
1565 // These are read/set from/to the first declaration.
1566 if (D->getPreviousDecl() == nullptr) {
1567 Record.AddDeclRef(D->getInstantiatedFromMember());
1568 Record.push_back(D->isMemberSpecialization());
1569 }
1570
1571 Code = serialization::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION;
1572 }
1573
VisitVarTemplateDecl(VarTemplateDecl * D)1574 void ASTDeclWriter::VisitVarTemplateDecl(VarTemplateDecl *D) {
1575 VisitRedeclarableTemplateDecl(D);
1576
1577 if (D->isFirstDecl())
1578 AddTemplateSpecializations(D);
1579 Code = serialization::DECL_VAR_TEMPLATE;
1580 }
1581
VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl * D)1582 void ASTDeclWriter::VisitVarTemplateSpecializationDecl(
1583 VarTemplateSpecializationDecl *D) {
1584 RegisterTemplateSpecialization(D->getSpecializedTemplate(), D);
1585
1586 VisitVarDecl(D);
1587
1588 llvm::PointerUnion<VarTemplateDecl *, VarTemplatePartialSpecializationDecl *>
1589 InstFrom = D->getSpecializedTemplateOrPartial();
1590 if (Decl *InstFromD = InstFrom.dyn_cast<VarTemplateDecl *>()) {
1591 Record.AddDeclRef(InstFromD);
1592 } else {
1593 Record.AddDeclRef(InstFrom.get<VarTemplatePartialSpecializationDecl *>());
1594 Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs());
1595 }
1596
1597 // Explicit info.
1598 Record.AddTypeSourceInfo(D->getTypeAsWritten());
1599 if (D->getTypeAsWritten()) {
1600 Record.AddSourceLocation(D->getExternLoc());
1601 Record.AddSourceLocation(D->getTemplateKeywordLoc());
1602 }
1603
1604 Record.AddTemplateArgumentList(&D->getTemplateArgs());
1605 Record.AddSourceLocation(D->getPointOfInstantiation());
1606 Record.push_back(D->getSpecializationKind());
1607 Record.push_back(D->IsCompleteDefinition);
1608 Record.push_back(D->isCanonicalDecl());
1609
1610 if (D->isCanonicalDecl()) {
1611 // When reading, we'll add it to the folding set of the following template.
1612 Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl());
1613 }
1614
1615 Code = serialization::DECL_VAR_TEMPLATE_SPECIALIZATION;
1616 }
1617
VisitVarTemplatePartialSpecializationDecl(VarTemplatePartialSpecializationDecl * D)1618 void ASTDeclWriter::VisitVarTemplatePartialSpecializationDecl(
1619 VarTemplatePartialSpecializationDecl *D) {
1620 Record.AddTemplateParameterList(D->getTemplateParameters());
1621 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten());
1622
1623 VisitVarTemplateSpecializationDecl(D);
1624
1625 // These are read/set from/to the first declaration.
1626 if (D->getPreviousDecl() == nullptr) {
1627 Record.AddDeclRef(D->getInstantiatedFromMember());
1628 Record.push_back(D->isMemberSpecialization());
1629 }
1630
1631 Code = serialization::DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION;
1632 }
1633
VisitClassScopeFunctionSpecializationDecl(ClassScopeFunctionSpecializationDecl * D)1634 void ASTDeclWriter::VisitClassScopeFunctionSpecializationDecl(
1635 ClassScopeFunctionSpecializationDecl *D) {
1636 VisitDecl(D);
1637 Record.AddDeclRef(D->getSpecialization());
1638 Record.push_back(D->hasExplicitTemplateArgs());
1639 if (D->hasExplicitTemplateArgs())
1640 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten());
1641 Code = serialization::DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION;
1642 }
1643
1644
VisitFunctionTemplateDecl(FunctionTemplateDecl * D)1645 void ASTDeclWriter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) {
1646 VisitRedeclarableTemplateDecl(D);
1647
1648 if (D->isFirstDecl())
1649 AddTemplateSpecializations(D);
1650 Code = serialization::DECL_FUNCTION_TEMPLATE;
1651 }
1652
VisitTemplateTypeParmDecl(TemplateTypeParmDecl * D)1653 void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) {
1654 Record.push_back(D->hasTypeConstraint());
1655 VisitTypeDecl(D);
1656
1657 Record.push_back(D->wasDeclaredWithTypename());
1658
1659 const TypeConstraint *TC = D->getTypeConstraint();
1660 Record.push_back(TC != nullptr);
1661 if (TC) {
1662 Record.AddNestedNameSpecifierLoc(TC->getNestedNameSpecifierLoc());
1663 Record.AddDeclarationNameInfo(TC->getConceptNameInfo());
1664 Record.AddDeclRef(TC->getNamedConcept());
1665 Record.push_back(TC->getTemplateArgsAsWritten() != nullptr);
1666 if (TC->getTemplateArgsAsWritten())
1667 Record.AddASTTemplateArgumentListInfo(TC->getTemplateArgsAsWritten());
1668 Record.AddStmt(TC->getImmediatelyDeclaredConstraint());
1669 Record.push_back(D->isExpandedParameterPack());
1670 if (D->isExpandedParameterPack())
1671 Record.push_back(D->getNumExpansionParameters());
1672 }
1673
1674 bool OwnsDefaultArg = D->hasDefaultArgument() &&
1675 !D->defaultArgumentWasInherited();
1676 Record.push_back(OwnsDefaultArg);
1677 if (OwnsDefaultArg)
1678 Record.AddTypeSourceInfo(D->getDefaultArgumentInfo());
1679
1680 Code = serialization::DECL_TEMPLATE_TYPE_PARM;
1681 }
1682
VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl * D)1683 void ASTDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) {
1684 // For an expanded parameter pack, record the number of expansion types here
1685 // so that it's easier for deserialization to allocate the right amount of
1686 // memory.
1687 Expr *TypeConstraint = D->getPlaceholderTypeConstraint();
1688 Record.push_back(!!TypeConstraint);
1689 if (D->isExpandedParameterPack())
1690 Record.push_back(D->getNumExpansionTypes());
1691
1692 VisitDeclaratorDecl(D);
1693 // TemplateParmPosition.
1694 Record.push_back(D->getDepth());
1695 Record.push_back(D->getPosition());
1696 if (TypeConstraint)
1697 Record.AddStmt(TypeConstraint);
1698
1699 if (D->isExpandedParameterPack()) {
1700 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) {
1701 Record.AddTypeRef(D->getExpansionType(I));
1702 Record.AddTypeSourceInfo(D->getExpansionTypeSourceInfo(I));
1703 }
1704
1705 Code = serialization::DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK;
1706 } else {
1707 // Rest of NonTypeTemplateParmDecl.
1708 Record.push_back(D->isParameterPack());
1709 bool OwnsDefaultArg = D->hasDefaultArgument() &&
1710 !D->defaultArgumentWasInherited();
1711 Record.push_back(OwnsDefaultArg);
1712 if (OwnsDefaultArg)
1713 Record.AddStmt(D->getDefaultArgument());
1714 Code = serialization::DECL_NON_TYPE_TEMPLATE_PARM;
1715 }
1716 }
1717
VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl * D)1718 void ASTDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) {
1719 // For an expanded parameter pack, record the number of expansion types here
1720 // so that it's easier for deserialization to allocate the right amount of
1721 // memory.
1722 if (D->isExpandedParameterPack())
1723 Record.push_back(D->getNumExpansionTemplateParameters());
1724
1725 VisitTemplateDecl(D);
1726 // TemplateParmPosition.
1727 Record.push_back(D->getDepth());
1728 Record.push_back(D->getPosition());
1729
1730 if (D->isExpandedParameterPack()) {
1731 for (unsigned I = 0, N = D->getNumExpansionTemplateParameters();
1732 I != N; ++I)
1733 Record.AddTemplateParameterList(D->getExpansionTemplateParameters(I));
1734 Code = serialization::DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK;
1735 } else {
1736 // Rest of TemplateTemplateParmDecl.
1737 Record.push_back(D->isParameterPack());
1738 bool OwnsDefaultArg = D->hasDefaultArgument() &&
1739 !D->defaultArgumentWasInherited();
1740 Record.push_back(OwnsDefaultArg);
1741 if (OwnsDefaultArg)
1742 Record.AddTemplateArgumentLoc(D->getDefaultArgument());
1743 Code = serialization::DECL_TEMPLATE_TEMPLATE_PARM;
1744 }
1745 }
1746
VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl * D)1747 void ASTDeclWriter::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) {
1748 VisitRedeclarableTemplateDecl(D);
1749 Code = serialization::DECL_TYPE_ALIAS_TEMPLATE;
1750 }
1751
VisitStaticAssertDecl(StaticAssertDecl * D)1752 void ASTDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) {
1753 VisitDecl(D);
1754 Record.AddStmt(D->getAssertExpr());
1755 Record.push_back(D->isFailed());
1756 Record.AddStmt(D->getMessage());
1757 Record.AddSourceLocation(D->getRParenLoc());
1758 Code = serialization::DECL_STATIC_ASSERT;
1759 }
1760
1761 /// Emit the DeclContext part of a declaration context decl.
VisitDeclContext(DeclContext * DC)1762 void ASTDeclWriter::VisitDeclContext(DeclContext *DC) {
1763 Record.AddOffset(Writer.WriteDeclContextLexicalBlock(Context, DC));
1764 Record.AddOffset(Writer.WriteDeclContextVisibleBlock(Context, DC));
1765 }
1766
getFirstLocalDecl(const Decl * D)1767 const Decl *ASTWriter::getFirstLocalDecl(const Decl *D) {
1768 assert(IsLocalDecl(D) && "expected a local declaration");
1769
1770 const Decl *Canon = D->getCanonicalDecl();
1771 if (IsLocalDecl(Canon))
1772 return Canon;
1773
1774 const Decl *&CacheEntry = FirstLocalDeclCache[Canon];
1775 if (CacheEntry)
1776 return CacheEntry;
1777
1778 for (const Decl *Redecl = D; Redecl; Redecl = Redecl->getPreviousDecl())
1779 if (IsLocalDecl(Redecl))
1780 D = Redecl;
1781 return CacheEntry = D;
1782 }
1783
1784 template <typename T>
VisitRedeclarable(Redeclarable<T> * D)1785 void ASTDeclWriter::VisitRedeclarable(Redeclarable<T> *D) {
1786 T *First = D->getFirstDecl();
1787 T *MostRecent = First->getMostRecentDecl();
1788 T *DAsT = static_cast<T *>(D);
1789 if (MostRecent != First) {
1790 assert(isRedeclarableDeclKind(DAsT->getKind()) &&
1791 "Not considered redeclarable?");
1792
1793 Record.AddDeclRef(First);
1794
1795 // Write out a list of local redeclarations of this declaration if it's the
1796 // first local declaration in the chain.
1797 const Decl *FirstLocal = Writer.getFirstLocalDecl(DAsT);
1798 if (DAsT == FirstLocal) {
1799 // Emit a list of all imported first declarations so that we can be sure
1800 // that all redeclarations visible to this module are before D in the
1801 // redecl chain.
1802 unsigned I = Record.size();
1803 Record.push_back(0);
1804 if (Writer.Chain)
1805 AddFirstDeclFromEachModule(DAsT, /*IncludeLocal*/false);
1806 // This is the number of imported first declarations + 1.
1807 Record[I] = Record.size() - I;
1808
1809 // Collect the set of local redeclarations of this declaration, from
1810 // newest to oldest.
1811 ASTWriter::RecordData LocalRedecls;
1812 ASTRecordWriter LocalRedeclWriter(Record, LocalRedecls);
1813 for (const Decl *Prev = FirstLocal->getMostRecentDecl();
1814 Prev != FirstLocal; Prev = Prev->getPreviousDecl())
1815 if (!Prev->isFromASTFile())
1816 LocalRedeclWriter.AddDeclRef(Prev);
1817
1818 // If we have any redecls, write them now as a separate record preceding
1819 // the declaration itself.
1820 if (LocalRedecls.empty())
1821 Record.push_back(0);
1822 else
1823 Record.AddOffset(LocalRedeclWriter.Emit(LOCAL_REDECLARATIONS));
1824 } else {
1825 Record.push_back(0);
1826 Record.AddDeclRef(FirstLocal);
1827 }
1828
1829 // Make sure that we serialize both the previous and the most-recent
1830 // declarations, which (transitively) ensures that all declarations in the
1831 // chain get serialized.
1832 //
1833 // FIXME: This is not correct; when we reach an imported declaration we
1834 // won't emit its previous declaration.
1835 (void)Writer.GetDeclRef(D->getPreviousDecl());
1836 (void)Writer.GetDeclRef(MostRecent);
1837 } else {
1838 // We use the sentinel value 0 to indicate an only declaration.
1839 Record.push_back(0);
1840 }
1841 }
1842
VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl * D)1843 void ASTDeclWriter::VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D) {
1844 Record.push_back(D->varlist_size());
1845 VisitDecl(D);
1846 for (auto *I : D->varlists())
1847 Record.AddStmt(I);
1848 Code = serialization::DECL_OMP_THREADPRIVATE;
1849 }
1850
VisitOMPAllocateDecl(OMPAllocateDecl * D)1851 void ASTDeclWriter::VisitOMPAllocateDecl(OMPAllocateDecl *D) {
1852 Record.push_back(D->varlist_size());
1853 Record.push_back(D->clauselist_size());
1854 VisitDecl(D);
1855 for (auto *I : D->varlists())
1856 Record.AddStmt(I);
1857 for (OMPClause *C : D->clauselists())
1858 Record.writeOMPClause(C);
1859 Code = serialization::DECL_OMP_ALLOCATE;
1860 }
1861
VisitOMPRequiresDecl(OMPRequiresDecl * D)1862 void ASTDeclWriter::VisitOMPRequiresDecl(OMPRequiresDecl *D) {
1863 Record.push_back(D->clauselist_size());
1864 VisitDecl(D);
1865 for (OMPClause *C : D->clauselists())
1866 Record.writeOMPClause(C);
1867 Code = serialization::DECL_OMP_REQUIRES;
1868 }
1869
VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl * D)1870 void ASTDeclWriter::VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D) {
1871 VisitValueDecl(D);
1872 Record.AddSourceLocation(D->getBeginLoc());
1873 Record.AddStmt(D->getCombinerIn());
1874 Record.AddStmt(D->getCombinerOut());
1875 Record.AddStmt(D->getCombiner());
1876 Record.AddStmt(D->getInitOrig());
1877 Record.AddStmt(D->getInitPriv());
1878 Record.AddStmt(D->getInitializer());
1879 Record.push_back(D->getInitializerKind());
1880 Record.AddDeclRef(D->getPrevDeclInScope());
1881 Code = serialization::DECL_OMP_DECLARE_REDUCTION;
1882 }
1883
VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl * D)1884 void ASTDeclWriter::VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D) {
1885 Record.push_back(D->clauselist_size());
1886 VisitValueDecl(D);
1887 Record.AddSourceLocation(D->getBeginLoc());
1888 Record.AddStmt(D->getMapperVarRef());
1889 Record.AddDeclarationName(D->getVarName());
1890 Record.AddDeclRef(D->getPrevDeclInScope());
1891 for (OMPClause *C : D->clauselists())
1892 Record.writeOMPClause(C);
1893 Code = serialization::DECL_OMP_DECLARE_MAPPER;
1894 }
1895
VisitOMPCapturedExprDecl(OMPCapturedExprDecl * D)1896 void ASTDeclWriter::VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D) {
1897 VisitVarDecl(D);
1898 Code = serialization::DECL_OMP_CAPTUREDEXPR;
1899 }
1900
1901 //===----------------------------------------------------------------------===//
1902 // ASTWriter Implementation
1903 //===----------------------------------------------------------------------===//
1904
WriteDeclAbbrevs()1905 void ASTWriter::WriteDeclAbbrevs() {
1906 using namespace llvm;
1907
1908 std::shared_ptr<BitCodeAbbrev> Abv;
1909
1910 // Abbreviation for DECL_FIELD
1911 Abv = std::make_shared<BitCodeAbbrev>();
1912 Abv->Add(BitCodeAbbrevOp(serialization::DECL_FIELD));
1913 // Decl
1914 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1915 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
1916 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1917 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1918 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1919 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1920 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1921 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1922 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier
1923 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1924 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1925 // NamedDecl
1926 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1927 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1928 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
1929 // ValueDecl
1930 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
1931 // DeclaratorDecl
1932 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc
1933 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
1934 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType
1935 // FieldDecl
1936 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable
1937 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle
1938 // Type Source Info
1939 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
1940 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
1941 DeclFieldAbbrev = Stream.EmitAbbrev(std::move(Abv));
1942
1943 // Abbreviation for DECL_OBJC_IVAR
1944 Abv = std::make_shared<BitCodeAbbrev>();
1945 Abv->Add(BitCodeAbbrevOp(serialization::DECL_OBJC_IVAR));
1946 // Decl
1947 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1948 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
1949 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1950 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1951 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1952 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1953 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1954 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1955 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier
1956 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1957 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1958 // NamedDecl
1959 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1960 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1961 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
1962 // ValueDecl
1963 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
1964 // DeclaratorDecl
1965 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc
1966 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
1967 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType
1968 // FieldDecl
1969 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable
1970 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle
1971 // ObjC Ivar
1972 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getAccessControl
1973 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getSynthesize
1974 // Type Source Info
1975 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
1976 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
1977 DeclObjCIvarAbbrev = Stream.EmitAbbrev(std::move(Abv));
1978
1979 // Abbreviation for DECL_ENUM
1980 Abv = std::make_shared<BitCodeAbbrev>();
1981 Abv->Add(BitCodeAbbrevOp(serialization::DECL_ENUM));
1982 // Redeclarable
1983 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
1984 // Decl
1985 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
1986 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
1987 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
1988 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
1989 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
1990 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
1991 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
1992 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
1993 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
1994 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
1995 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
1996 // NamedDecl
1997 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
1998 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
1999 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
2000 // TypeDecl
2001 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
2002 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref
2003 // TagDecl
2004 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace
2005 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind
2006 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition
2007 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator
2008 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding
2009 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired
2010 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
2011 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
2012 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind
2013 // EnumDecl
2014 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // AddTypeRef
2015 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IntegerType
2016 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getPromotionType
2017 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumPositiveBits
2018 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumNegativeBits
2019 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScoped
2020 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScopedUsingClassTag
2021 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isFixed
2022 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));// ODRHash
2023 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InstantiatedMembEnum
2024 // DC
2025 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset
2026 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset
2027 DeclEnumAbbrev = Stream.EmitAbbrev(std::move(Abv));
2028
2029 // Abbreviation for DECL_RECORD
2030 Abv = std::make_shared<BitCodeAbbrev>();
2031 Abv->Add(BitCodeAbbrevOp(serialization::DECL_RECORD));
2032 // Redeclarable
2033 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
2034 // Decl
2035 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
2036 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
2037 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
2038 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
2039 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
2040 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
2041 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
2042 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
2043 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
2044 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
2045 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
2046 // NamedDecl
2047 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
2048 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
2049 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
2050 // TypeDecl
2051 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
2052 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref
2053 // TagDecl
2054 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace
2055 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind
2056 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition
2057 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator
2058 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding
2059 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired
2060 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
2061 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation
2062 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind
2063 // RecordDecl
2064 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // FlexibleArrayMember
2065 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // AnonymousStructUnion
2066 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasObjectMember
2067 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasVolatileMember
2068
2069 // isNonTrivialToPrimitiveDefaultInitialize
2070 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2071 // isNonTrivialToPrimitiveCopy
2072 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2073 // isNonTrivialToPrimitiveDestroy
2074 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2075 // hasNonTrivialToPrimitiveDefaultInitializeCUnion
2076 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2077 // hasNonTrivialToPrimitiveDestructCUnion
2078 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2079 // hasNonTrivialToPrimitiveCopyCUnion
2080 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2081 // isParamDestroyedInCallee
2082 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1));
2083 // getArgPassingRestrictions
2084 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2));
2085
2086 // DC
2087 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset
2088 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset
2089 DeclRecordAbbrev = Stream.EmitAbbrev(std::move(Abv));
2090
2091 // Abbreviation for DECL_PARM_VAR
2092 Abv = std::make_shared<BitCodeAbbrev>();
2093 Abv->Add(BitCodeAbbrevOp(serialization::DECL_PARM_VAR));
2094 // Redeclarable
2095 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
2096 // Decl
2097 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
2098 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
2099 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
2100 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
2101 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
2102 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
2103 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
2104 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
2105 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
2106 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
2107 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
2108 // NamedDecl
2109 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
2110 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
2111 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
2112 // ValueDecl
2113 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2114 // DeclaratorDecl
2115 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc
2116 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
2117 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType
2118 // VarDecl
2119 Abv->Add(BitCodeAbbrevOp(0)); // SClass
2120 Abv->Add(BitCodeAbbrevOp(0)); // TSCSpec
2121 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle
2122 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isARCPseudoStrong
2123 Abv->Add(BitCodeAbbrevOp(0)); // Linkage
2124 Abv->Add(BitCodeAbbrevOp(0)); // HasInit
2125 Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo
2126 // ParmVarDecl
2127 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsObjCMethodParameter
2128 Abv->Add(BitCodeAbbrevOp(0)); // ScopeDepth
2129 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ScopeIndex
2130 Abv->Add(BitCodeAbbrevOp(0)); // ObjCDeclQualifier
2131 Abv->Add(BitCodeAbbrevOp(0)); // KNRPromoted
2132 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedDefaultArg
2133 Abv->Add(BitCodeAbbrevOp(0)); // HasUninstantiatedDefaultArg
2134 // Type Source Info
2135 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
2136 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
2137 DeclParmVarAbbrev = Stream.EmitAbbrev(std::move(Abv));
2138
2139 // Abbreviation for DECL_TYPEDEF
2140 Abv = std::make_shared<BitCodeAbbrev>();
2141 Abv->Add(BitCodeAbbrevOp(serialization::DECL_TYPEDEF));
2142 // Redeclarable
2143 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
2144 // Decl
2145 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
2146 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
2147 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
2148 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
2149 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
2150 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isUsed
2151 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isReferenced
2152 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
2153 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // C++ AccessSpecifier
2154 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
2155 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
2156 // NamedDecl
2157 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
2158 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
2159 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
2160 // TypeDecl
2161 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location
2162 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref
2163 // TypedefDecl
2164 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
2165 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
2166 DeclTypedefAbbrev = Stream.EmitAbbrev(std::move(Abv));
2167
2168 // Abbreviation for DECL_VAR
2169 Abv = std::make_shared<BitCodeAbbrev>();
2170 Abv->Add(BitCodeAbbrevOp(serialization::DECL_VAR));
2171 // Redeclarable
2172 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration
2173 // Decl
2174 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
2175 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
2176 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl
2177 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
2178 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit
2179 Abv->Add(BitCodeAbbrevOp(0)); // isUsed
2180 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced
2181 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer
2182 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier
2183 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate
2184 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
2185 // NamedDecl
2186 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier
2187 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name
2188 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
2189 // ValueDecl
2190 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2191 // DeclaratorDecl
2192 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc
2193 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo
2194 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType
2195 // VarDecl
2196 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // SClass
2197 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // TSCSpec
2198 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // InitStyle
2199 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isARCPseudoStrong
2200 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsThisDeclarationADemotedDefinition
2201 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isExceptionVariable
2202 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isNRVOVariable
2203 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCXXForRangeDecl
2204 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isObjCForDecl
2205 Abv->Add(BitCodeAbbrevOp(0)); // isInline
2206 Abv->Add(BitCodeAbbrevOp(0)); // isInlineSpecified
2207 Abv->Add(BitCodeAbbrevOp(0)); // isConstexpr
2208 Abv->Add(BitCodeAbbrevOp(0)); // isInitCapture
2209 Abv->Add(BitCodeAbbrevOp(0)); // isPrevDeclInSameScope
2210 Abv->Add(BitCodeAbbrevOp(0)); // ImplicitParamKind
2211 Abv->Add(BitCodeAbbrevOp(0)); // EscapingByref
2212 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage
2213 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // IsInitICE (local)
2214 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // VarKind (local enum)
2215 // Type Source Info
2216 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
2217 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc
2218 DeclVarAbbrev = Stream.EmitAbbrev(std::move(Abv));
2219
2220 // Abbreviation for DECL_CXX_METHOD
2221 Abv = std::make_shared<BitCodeAbbrev>();
2222 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CXX_METHOD));
2223 // RedeclarableDecl
2224 Abv->Add(BitCodeAbbrevOp(0)); // CanonicalDecl
2225 // Decl
2226 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext
2227 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext
2228 Abv->Add(BitCodeAbbrevOp(0)); // Invalid
2229 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs
2230 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Implicit
2231 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Used
2232 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Referenced
2233 Abv->Add(BitCodeAbbrevOp(0)); // InObjCContainer
2234 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Access
2235 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModulePrivate
2236 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID
2237 // NamedDecl
2238 Abv->Add(BitCodeAbbrevOp(DeclarationName::Identifier)); // NameKind
2239 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Identifier
2240 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber
2241 // ValueDecl
2242 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2243 // DeclaratorDecl
2244 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerLocStart
2245 Abv->Add(BitCodeAbbrevOp(0)); // HasExtInfo
2246 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType
2247 // FunctionDecl
2248 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 11)); // IDNS
2249 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // StorageClass
2250 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Inline
2251 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InlineSpecified
2252 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // VirtualAsWritten
2253 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Pure
2254 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedProto
2255 Abv->Add(BitCodeAbbrevOp(1)); // HasWrittenProto
2256 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Deleted
2257 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Trivial
2258 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // TrivialForCall
2259 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Defaulted
2260 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ExplicitlyDefaulted
2261 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ImplicitReturnZero
2262 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Constexpr
2263 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // UsesSEHTry
2264 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // SkippedBody
2265 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // MultiVersion
2266 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // LateParsed
2267 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage
2268 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LocEnd
2269 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // ODRHash
2270 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // TemplateKind
2271 // This Array slurps the rest of the record. Fortunately we want to encode
2272 // (nearly) all the remaining (variable number of) fields in the same way.
2273 //
2274 // This is the function template information if any, then
2275 // NumParams and Params[] from FunctionDecl, and
2276 // NumOverriddenMethods, OverriddenMethods[] from CXXMethodDecl.
2277 //
2278 // Add an AbbrevOp for 'size then elements' and use it here.
2279 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
2280 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6));
2281 DeclCXXMethodAbbrev = Stream.EmitAbbrev(std::move(Abv));
2282
2283 // Abbreviation for EXPR_DECL_REF
2284 Abv = std::make_shared<BitCodeAbbrev>();
2285 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_DECL_REF));
2286 //Stmt
2287 // Expr
2288 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2289 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent
2290 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent
2291 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent
2292 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack
2293 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ContainsErrors
2294 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind
2295 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind
2296 //DeclRefExpr
2297 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HasQualifier
2298 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //GetDeclFound
2299 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ExplicitTemplateArgs
2300 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HadMultipleCandidates
2301 Abv->Add(BitCodeAbbrevOp(0)); // RefersToEnclosingVariableOrCapture
2302 Abv->Add(BitCodeAbbrevOp(0)); // NonOdrUseReason
2303 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclRef
2304 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location
2305 DeclRefExprAbbrev = Stream.EmitAbbrev(std::move(Abv));
2306
2307 // Abbreviation for EXPR_INTEGER_LITERAL
2308 Abv = std::make_shared<BitCodeAbbrev>();
2309 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_INTEGER_LITERAL));
2310 //Stmt
2311 // Expr
2312 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2313 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent
2314 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent
2315 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent
2316 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack
2317 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ContainsErrors
2318 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind
2319 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind
2320 //Integer Literal
2321 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location
2322 Abv->Add(BitCodeAbbrevOp(32)); // Bit Width
2323 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Value
2324 IntegerLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv));
2325
2326 // Abbreviation for EXPR_CHARACTER_LITERAL
2327 Abv = std::make_shared<BitCodeAbbrev>();
2328 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CHARACTER_LITERAL));
2329 //Stmt
2330 // Expr
2331 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2332 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent
2333 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent
2334 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent
2335 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack
2336 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ContainsErrors
2337 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind
2338 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind
2339 //Character Literal
2340 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getValue
2341 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location
2342 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // getKind
2343 CharacterLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv));
2344
2345 // Abbreviation for EXPR_IMPLICIT_CAST
2346 Abv = std::make_shared<BitCodeAbbrev>();
2347 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_IMPLICIT_CAST));
2348 // Stmt
2349 // Expr
2350 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
2351 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent
2352 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent
2353 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent
2354 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack
2355 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ContainsErrors
2356 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind
2357 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind
2358 // CastExpr
2359 Abv->Add(BitCodeAbbrevOp(0)); // PathSize
2360 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 6)); // CastKind
2361 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // PartOfExplicitCast
2362 // ImplicitCastExpr
2363 ExprImplicitCastAbbrev = Stream.EmitAbbrev(std::move(Abv));
2364
2365 Abv = std::make_shared<BitCodeAbbrev>();
2366 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_LEXICAL));
2367 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2368 DeclContextLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv));
2369
2370 Abv = std::make_shared<BitCodeAbbrev>();
2371 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_VISIBLE));
2372 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2373 DeclContextVisibleLookupAbbrev = Stream.EmitAbbrev(std::move(Abv));
2374 }
2375
2376 /// isRequiredDecl - Check if this is a "required" Decl, which must be seen by
2377 /// consumers of the AST.
2378 ///
2379 /// Such decls will always be deserialized from the AST file, so we would like
2380 /// this to be as restrictive as possible. Currently the predicate is driven by
2381 /// code generation requirements, if other clients have a different notion of
2382 /// what is "required" then we may have to consider an alternate scheme where
2383 /// clients can iterate over the top-level decls and get information on them,
2384 /// without necessary deserializing them. We could explicitly require such
2385 /// clients to use a separate API call to "realize" the decl. This should be
2386 /// relatively painless since they would presumably only do it for top-level
2387 /// decls.
isRequiredDecl(const Decl * D,ASTContext & Context,bool WritingModule)2388 static bool isRequiredDecl(const Decl *D, ASTContext &Context,
2389 bool WritingModule) {
2390 // An ObjCMethodDecl is never considered as "required" because its
2391 // implementation container always is.
2392
2393 // File scoped assembly or obj-c or OMP declare target implementation must be
2394 // seen.
2395 if (isa<FileScopeAsmDecl>(D) || isa<ObjCImplDecl>(D))
2396 return true;
2397
2398 if (WritingModule && isPartOfPerModuleInitializer(D)) {
2399 // These declarations are part of the module initializer, and are emitted
2400 // if and when the module is imported, rather than being emitted eagerly.
2401 return false;
2402 }
2403
2404 return Context.DeclMustBeEmitted(D);
2405 }
2406
WriteDecl(ASTContext & Context,Decl * D)2407 void ASTWriter::WriteDecl(ASTContext &Context, Decl *D) {
2408 PrettyDeclStackTraceEntry CrashInfo(Context, D, SourceLocation(),
2409 "serializing");
2410
2411 // Determine the ID for this declaration.
2412 serialization::DeclID ID;
2413 assert(!D->isFromASTFile() && "should not be emitting imported decl");
2414 serialization::DeclID &IDR = DeclIDs[D];
2415 if (IDR == 0)
2416 IDR = NextDeclID++;
2417
2418 ID = IDR;
2419
2420 assert(ID >= FirstDeclID && "invalid decl ID");
2421
2422 RecordData Record;
2423 ASTDeclWriter W(*this, Context, Record);
2424
2425 // Build a record for this declaration
2426 W.Visit(D);
2427
2428 // Emit this declaration to the bitstream.
2429 uint64_t Offset = W.Emit(D);
2430
2431 // Record the offset for this declaration
2432 SourceLocation Loc = D->getLocation();
2433 unsigned Index = ID - FirstDeclID;
2434 if (DeclOffsets.size() == Index)
2435 DeclOffsets.emplace_back(Loc, Offset, DeclTypesBlockStartOffset);
2436 else if (DeclOffsets.size() < Index) {
2437 // FIXME: Can/should this happen?
2438 DeclOffsets.resize(Index+1);
2439 DeclOffsets[Index].setLocation(Loc);
2440 DeclOffsets[Index].setBitOffset(Offset, DeclTypesBlockStartOffset);
2441 } else {
2442 llvm_unreachable("declarations should be emitted in ID order");
2443 }
2444
2445 SourceManager &SM = Context.getSourceManager();
2446 if (Loc.isValid() && SM.isLocalSourceLocation(Loc))
2447 associateDeclWithFile(D, ID);
2448
2449 // Note declarations that should be deserialized eagerly so that we can add
2450 // them to a record in the AST file later.
2451 if (isRequiredDecl(D, Context, WritingModule))
2452 EagerlyDeserializedDecls.push_back(ID);
2453 }
2454
AddFunctionDefinition(const FunctionDecl * FD)2455 void ASTRecordWriter::AddFunctionDefinition(const FunctionDecl *FD) {
2456 // Switch case IDs are per function body.
2457 Writer->ClearSwitchCaseIDs();
2458
2459 assert(FD->doesThisDeclarationHaveABody());
2460 bool ModulesCodegen = false;
2461 if (!FD->isDependentContext()) {
2462 Optional<GVALinkage> Linkage;
2463 if (Writer->WritingModule &&
2464 Writer->WritingModule->Kind == Module::ModuleInterfaceUnit) {
2465 // When building a C++ Modules TS module interface unit, a strong
2466 // definition in the module interface is provided by the compilation of
2467 // that module interface unit, not by its users. (Inline functions are
2468 // still emitted in module users.)
2469 Linkage = Writer->Context->GetGVALinkageForFunction(FD);
2470 ModulesCodegen = *Linkage == GVA_StrongExternal;
2471 }
2472 if (Writer->Context->getLangOpts().ModulesCodegen) {
2473 // Under -fmodules-codegen, codegen is performed for all non-internal,
2474 // non-always_inline functions, unless they are available elsewhere.
2475 if (!FD->hasAttr<AlwaysInlineAttr>()) {
2476 if (!Linkage)
2477 Linkage = Writer->Context->GetGVALinkageForFunction(FD);
2478 ModulesCodegen =
2479 *Linkage != GVA_Internal && *Linkage != GVA_AvailableExternally;
2480 }
2481 }
2482 }
2483 Record->push_back(ModulesCodegen);
2484 if (ModulesCodegen)
2485 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(FD));
2486 if (auto *CD = dyn_cast<CXXConstructorDecl>(FD)) {
2487 Record->push_back(CD->getNumCtorInitializers());
2488 if (CD->getNumCtorInitializers())
2489 AddCXXCtorInitializers(
2490 llvm::makeArrayRef(CD->init_begin(), CD->init_end()));
2491 }
2492 AddStmt(FD->getBody());
2493 }
2494