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