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