1 //===--- ASTWriterDecl.cpp - Declaration Serialization --------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file implements serialization for Declarations. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "ASTCommon.h" 14 #include "clang/AST/Attr.h" 15 #include "clang/AST/DeclCXX.h" 16 #include "clang/AST/DeclTemplate.h" 17 #include "clang/AST/DeclVisitor.h" 18 #include "clang/AST/Expr.h" 19 #include "clang/AST/OpenMPClause.h" 20 #include "clang/AST/PrettyDeclStackTrace.h" 21 #include "clang/Basic/SourceManager.h" 22 #include "clang/Serialization/ASTReader.h" 23 #include "clang/Serialization/ASTRecordWriter.h" 24 #include "llvm/Bitstream/BitstreamWriter.h" 25 #include "llvm/Support/ErrorHandling.h" 26 #include <optional> 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: 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 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 VisitUnresolvedUsingIfExistsDecl(UnresolvedUsingIfExistsDecl *D); 73 void VisitTagDecl(TagDecl *D); 74 void VisitEnumDecl(EnumDecl *D); 75 void VisitRecordDecl(RecordDecl *D); 76 void VisitCXXRecordDecl(CXXRecordDecl *D); 77 void VisitClassTemplateSpecializationDecl( 78 ClassTemplateSpecializationDecl *D); 79 void VisitClassTemplatePartialSpecializationDecl( 80 ClassTemplatePartialSpecializationDecl *D); 81 void VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl *D); 82 void VisitVarTemplatePartialSpecializationDecl( 83 VarTemplatePartialSpecializationDecl *D); 84 void VisitClassScopeFunctionSpecializationDecl( 85 ClassScopeFunctionSpecializationDecl *D); 86 void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D); 87 void VisitValueDecl(ValueDecl *D); 88 void VisitEnumConstantDecl(EnumConstantDecl *D); 89 void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D); 90 void VisitDeclaratorDecl(DeclaratorDecl *D); 91 void VisitFunctionDecl(FunctionDecl *D); 92 void VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D); 93 void VisitCXXMethodDecl(CXXMethodDecl *D); 94 void VisitCXXConstructorDecl(CXXConstructorDecl *D); 95 void VisitCXXDestructorDecl(CXXDestructorDecl *D); 96 void VisitCXXConversionDecl(CXXConversionDecl *D); 97 void VisitFieldDecl(FieldDecl *D); 98 void VisitMSPropertyDecl(MSPropertyDecl *D); 99 void VisitMSGuidDecl(MSGuidDecl *D); 100 void VisitUnnamedGlobalConstantDecl(UnnamedGlobalConstantDecl *D); 101 void VisitTemplateParamObjectDecl(TemplateParamObjectDecl *D); 102 void VisitIndirectFieldDecl(IndirectFieldDecl *D); 103 void VisitVarDecl(VarDecl *D); 104 void VisitImplicitParamDecl(ImplicitParamDecl *D); 105 void VisitParmVarDecl(ParmVarDecl *D); 106 void VisitDecompositionDecl(DecompositionDecl *D); 107 void VisitBindingDecl(BindingDecl *D); 108 void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D); 109 void VisitTemplateDecl(TemplateDecl *D); 110 void VisitConceptDecl(ConceptDecl *D); 111 void VisitImplicitConceptSpecializationDecl( 112 ImplicitConceptSpecializationDecl *D); 113 void VisitRequiresExprBodyDecl(RequiresExprBodyDecl *D); 114 void VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D); 115 void VisitClassTemplateDecl(ClassTemplateDecl *D); 116 void VisitVarTemplateDecl(VarTemplateDecl *D); 117 void VisitFunctionTemplateDecl(FunctionTemplateDecl *D); 118 void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D); 119 void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D); 120 void VisitUsingDecl(UsingDecl *D); 121 void VisitUsingEnumDecl(UsingEnumDecl *D); 122 void VisitUsingPackDecl(UsingPackDecl *D); 123 void VisitUsingShadowDecl(UsingShadowDecl *D); 124 void VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl *D); 125 void VisitLinkageSpecDecl(LinkageSpecDecl *D); 126 void VisitExportDecl(ExportDecl *D); 127 void VisitFileScopeAsmDecl(FileScopeAsmDecl *D); 128 void VisitTopLevelStmtDecl(TopLevelStmtDecl *D); 129 void VisitImportDecl(ImportDecl *D); 130 void VisitAccessSpecDecl(AccessSpecDecl *D); 131 void VisitFriendDecl(FriendDecl *D); 132 void VisitFriendTemplateDecl(FriendTemplateDecl *D); 133 void VisitStaticAssertDecl(StaticAssertDecl *D); 134 void VisitBlockDecl(BlockDecl *D); 135 void VisitCapturedDecl(CapturedDecl *D); 136 void VisitEmptyDecl(EmptyDecl *D); 137 void VisitLifetimeExtendedTemporaryDecl(LifetimeExtendedTemporaryDecl *D); 138 void VisitDeclContext(DeclContext *DC); 139 template <typename T> void VisitRedeclarable(Redeclarable<T> *D); 140 void VisitHLSLBufferDecl(HLSLBufferDecl *D); 141 142 // FIXME: Put in the same order is DeclNodes.td? 143 void VisitObjCMethodDecl(ObjCMethodDecl *D); 144 void VisitObjCTypeParamDecl(ObjCTypeParamDecl *D); 145 void VisitObjCContainerDecl(ObjCContainerDecl *D); 146 void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D); 147 void VisitObjCIvarDecl(ObjCIvarDecl *D); 148 void VisitObjCProtocolDecl(ObjCProtocolDecl *D); 149 void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D); 150 void VisitObjCCategoryDecl(ObjCCategoryDecl *D); 151 void VisitObjCImplDecl(ObjCImplDecl *D); 152 void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D); 153 void VisitObjCImplementationDecl(ObjCImplementationDecl *D); 154 void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D); 155 void VisitObjCPropertyDecl(ObjCPropertyDecl *D); 156 void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D); 157 void VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D); 158 void VisitOMPAllocateDecl(OMPAllocateDecl *D); 159 void VisitOMPRequiresDecl(OMPRequiresDecl *D); 160 void VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D); 161 void VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D); 162 void VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D); 163 164 /// Add an Objective-C type parameter list to the given record. 165 void AddObjCTypeParamList(ObjCTypeParamList *typeParams) { 166 // Empty type parameter list. 167 if (!typeParams) { 168 Record.push_back(0); 169 return; 170 } 171 172 Record.push_back(typeParams->size()); 173 for (auto *typeParam : *typeParams) { 174 Record.AddDeclRef(typeParam); 175 } 176 Record.AddSourceLocation(typeParams->getLAngleLoc()); 177 Record.AddSourceLocation(typeParams->getRAngleLoc()); 178 } 179 180 /// Add to the record the first declaration from each module file that 181 /// provides a declaration of D. The intent is to provide a sufficient 182 /// set such that reloading this set will load all current redeclarations. 183 void AddFirstDeclFromEachModule(const Decl *D, bool IncludeLocal) { 184 llvm::MapVector<ModuleFile*, const Decl*> Firsts; 185 // FIXME: We can skip entries that we know are implied by others. 186 for (const Decl *R = D->getMostRecentDecl(); R; R = R->getPreviousDecl()) { 187 if (R->isFromASTFile()) 188 Firsts[Writer.Chain->getOwningModuleFile(R)] = R; 189 else if (IncludeLocal) 190 Firsts[nullptr] = R; 191 } 192 for (const auto &F : Firsts) 193 Record.AddDeclRef(F.second); 194 } 195 196 /// Get the specialization decl from an entry in the specialization list. 197 template <typename EntryType> 198 typename RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::DeclType * 199 getSpecializationDecl(EntryType &T) { 200 return RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::getDecl(&T); 201 } 202 203 /// Get the list of partial specializations from a template's common ptr. 204 template<typename T> 205 decltype(T::PartialSpecializations) &getPartialSpecializations(T *Common) { 206 return Common->PartialSpecializations; 207 } 208 ArrayRef<Decl> getPartialSpecializations(FunctionTemplateDecl::Common *) { 209 return std::nullopt; 210 } 211 212 template<typename DeclTy> 213 void AddTemplateSpecializations(DeclTy *D) { 214 auto *Common = D->getCommonPtr(); 215 216 // If we have any lazy specializations, and the external AST source is 217 // our chained AST reader, we can just write out the DeclIDs. Otherwise, 218 // we need to resolve them to actual declarations. 219 if (Writer.Chain != Writer.Context->getExternalSource() && 220 Common->LazySpecializations) { 221 D->LoadLazySpecializations(); 222 assert(!Common->LazySpecializations); 223 } 224 225 ArrayRef<DeclID> LazySpecializations; 226 if (auto *LS = Common->LazySpecializations) 227 LazySpecializations = llvm::ArrayRef(LS + 1, LS[0]); 228 229 // Add a slot to the record for the number of specializations. 230 unsigned I = Record.size(); 231 Record.push_back(0); 232 233 // AddFirstDeclFromEachModule might trigger deserialization, invalidating 234 // *Specializations iterators. 235 llvm::SmallVector<const Decl*, 16> Specs; 236 for (auto &Entry : Common->Specializations) 237 Specs.push_back(getSpecializationDecl(Entry)); 238 for (auto &Entry : getPartialSpecializations(Common)) 239 Specs.push_back(getSpecializationDecl(Entry)); 240 241 for (auto *D : Specs) { 242 assert(D->isCanonicalDecl() && "non-canonical decl in set"); 243 AddFirstDeclFromEachModule(D, /*IncludeLocal*/true); 244 } 245 Record.append(LazySpecializations.begin(), LazySpecializations.end()); 246 247 // Update the size entry we added earlier. 248 Record[I] = Record.size() - I - 1; 249 } 250 251 /// Ensure that this template specialization is associated with the specified 252 /// template on reload. 253 void RegisterTemplateSpecialization(const Decl *Template, 254 const Decl *Specialization) { 255 Template = Template->getCanonicalDecl(); 256 257 // If the canonical template is local, we'll write out this specialization 258 // when we emit it. 259 // FIXME: We can do the same thing if there is any local declaration of 260 // the template, to avoid emitting an update record. 261 if (!Template->isFromASTFile()) 262 return; 263 264 // We only need to associate the first local declaration of the 265 // specialization. The other declarations will get pulled in by it. 266 if (Writer.getFirstLocalDecl(Specialization) != Specialization) 267 return; 268 269 Writer.DeclUpdates[Template].push_back(ASTWriter::DeclUpdate( 270 UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION, Specialization)); 271 } 272 }; 273 } 274 275 void ASTDeclWriter::Visit(Decl *D) { 276 DeclVisitor<ASTDeclWriter>::Visit(D); 277 278 // Source locations require array (variable-length) abbreviations. The 279 // abbreviation infrastructure requires that arrays are encoded last, so 280 // we handle it here in the case of those classes derived from DeclaratorDecl 281 if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)) { 282 if (auto *TInfo = DD->getTypeSourceInfo()) 283 Record.AddTypeLoc(TInfo->getTypeLoc()); 284 } 285 286 // Handle FunctionDecl's body here and write it after all other Stmts/Exprs 287 // have been written. We want it last because we will not read it back when 288 // retrieving it from the AST, we'll just lazily set the offset. 289 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 290 Record.push_back(FD->doesThisDeclarationHaveABody()); 291 if (FD->doesThisDeclarationHaveABody()) 292 Record.AddFunctionDefinition(FD); 293 } 294 295 // If this declaration is also a DeclContext, write blocks for the 296 // declarations that lexically stored inside its context and those 297 // declarations that are visible from its context. 298 if (DeclContext *DC = dyn_cast<DeclContext>(D)) 299 VisitDeclContext(DC); 300 } 301 302 void ASTDeclWriter::VisitDecl(Decl *D) { 303 Record.AddDeclRef(cast_or_null<Decl>(D->getDeclContext())); 304 if (D->getDeclContext() != D->getLexicalDeclContext()) 305 Record.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext())); 306 else 307 Record.push_back(0); 308 Record.push_back(D->isInvalidDecl()); 309 Record.push_back(D->hasAttrs()); 310 if (D->hasAttrs()) 311 Record.AddAttributes(D->getAttrs()); 312 Record.push_back(D->isImplicit()); 313 Record.push_back(D->isUsed(false)); 314 Record.push_back(D->isReferenced()); 315 Record.push_back(D->isTopLevelDeclInObjCContainer()); 316 Record.push_back(D->getAccess()); 317 Record.push_back((uint64_t)D->getModuleOwnershipKind()); 318 Record.push_back(Writer.getSubmoduleID(D->getOwningModule())); 319 320 // If this declaration injected a name into a context different from its 321 // lexical context, and that context is an imported namespace, we need to 322 // update its visible declarations to include this name. 323 // 324 // This happens when we instantiate a class with a friend declaration or a 325 // function with a local extern declaration, for instance. 326 // 327 // FIXME: Can we handle this in AddedVisibleDecl instead? 328 if (D->isOutOfLine()) { 329 auto *DC = D->getDeclContext(); 330 while (auto *NS = dyn_cast<NamespaceDecl>(DC->getRedeclContext())) { 331 if (!NS->isFromASTFile()) 332 break; 333 Writer.UpdatedDeclContexts.insert(NS->getPrimaryContext()); 334 if (!NS->isInlineNamespace()) 335 break; 336 DC = NS->getParent(); 337 } 338 } 339 } 340 341 void ASTDeclWriter::VisitPragmaCommentDecl(PragmaCommentDecl *D) { 342 StringRef Arg = D->getArg(); 343 Record.push_back(Arg.size()); 344 VisitDecl(D); 345 Record.AddSourceLocation(D->getBeginLoc()); 346 Record.push_back(D->getCommentKind()); 347 Record.AddString(Arg); 348 Code = serialization::DECL_PRAGMA_COMMENT; 349 } 350 351 void ASTDeclWriter::VisitPragmaDetectMismatchDecl( 352 PragmaDetectMismatchDecl *D) { 353 StringRef Name = D->getName(); 354 StringRef Value = D->getValue(); 355 Record.push_back(Name.size() + 1 + Value.size()); 356 VisitDecl(D); 357 Record.AddSourceLocation(D->getBeginLoc()); 358 Record.AddString(Name); 359 Record.AddString(Value); 360 Code = serialization::DECL_PRAGMA_DETECT_MISMATCH; 361 } 362 363 void ASTDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) { 364 llvm_unreachable("Translation units aren't directly serialized"); 365 } 366 367 void ASTDeclWriter::VisitNamedDecl(NamedDecl *D) { 368 VisitDecl(D); 369 Record.AddDeclarationName(D->getDeclName()); 370 Record.push_back(needsAnonymousDeclarationNumber(D) 371 ? Writer.getAnonymousDeclarationNumber(D) 372 : 0); 373 } 374 375 void ASTDeclWriter::VisitTypeDecl(TypeDecl *D) { 376 VisitNamedDecl(D); 377 Record.AddSourceLocation(D->getBeginLoc()); 378 Record.AddTypeRef(QualType(D->getTypeForDecl(), 0)); 379 } 380 381 void ASTDeclWriter::VisitTypedefNameDecl(TypedefNameDecl *D) { 382 VisitRedeclarable(D); 383 VisitTypeDecl(D); 384 Record.AddTypeSourceInfo(D->getTypeSourceInfo()); 385 Record.push_back(D->isModed()); 386 if (D->isModed()) 387 Record.AddTypeRef(D->getUnderlyingType()); 388 Record.AddDeclRef(D->getAnonDeclWithTypedefName(false)); 389 } 390 391 void ASTDeclWriter::VisitTypedefDecl(TypedefDecl *D) { 392 VisitTypedefNameDecl(D); 393 if (D->getDeclContext() == D->getLexicalDeclContext() && 394 !D->hasAttrs() && 395 !D->isImplicit() && 396 D->getFirstDecl() == D->getMostRecentDecl() && 397 !D->isInvalidDecl() && 398 !D->isTopLevelDeclInObjCContainer() && 399 !D->isModulePrivate() && 400 !needsAnonymousDeclarationNumber(D) && 401 D->getDeclName().getNameKind() == DeclarationName::Identifier) 402 AbbrevToUse = Writer.getDeclTypedefAbbrev(); 403 404 Code = serialization::DECL_TYPEDEF; 405 } 406 407 void ASTDeclWriter::VisitTypeAliasDecl(TypeAliasDecl *D) { 408 VisitTypedefNameDecl(D); 409 Record.AddDeclRef(D->getDescribedAliasTemplate()); 410 Code = serialization::DECL_TYPEALIAS; 411 } 412 413 void ASTDeclWriter::VisitTagDecl(TagDecl *D) { 414 VisitRedeclarable(D); 415 VisitTypeDecl(D); 416 Record.push_back(D->getIdentifierNamespace()); 417 Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding 418 if (!isa<CXXRecordDecl>(D)) 419 Record.push_back(D->isCompleteDefinition()); 420 Record.push_back(D->isEmbeddedInDeclarator()); 421 Record.push_back(D->isFreeStanding()); 422 Record.push_back(D->isCompleteDefinitionRequired()); 423 Record.AddSourceRange(D->getBraceRange()); 424 425 if (D->hasExtInfo()) { 426 Record.push_back(1); 427 Record.AddQualifierInfo(*D->getExtInfo()); 428 } else if (auto *TD = D->getTypedefNameForAnonDecl()) { 429 Record.push_back(2); 430 Record.AddDeclRef(TD); 431 Record.AddIdentifierRef(TD->getDeclName().getAsIdentifierInfo()); 432 } else { 433 Record.push_back(0); 434 } 435 } 436 437 void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) { 438 VisitTagDecl(D); 439 Record.AddTypeSourceInfo(D->getIntegerTypeSourceInfo()); 440 if (!D->getIntegerTypeSourceInfo()) 441 Record.AddTypeRef(D->getIntegerType()); 442 Record.AddTypeRef(D->getPromotionType()); 443 Record.push_back(D->getNumPositiveBits()); 444 Record.push_back(D->getNumNegativeBits()); 445 Record.push_back(D->isScoped()); 446 Record.push_back(D->isScopedUsingClassTag()); 447 Record.push_back(D->isFixed()); 448 Record.push_back(D->getODRHash()); 449 450 if (MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo()) { 451 Record.AddDeclRef(MemberInfo->getInstantiatedFrom()); 452 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 453 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation()); 454 } else { 455 Record.AddDeclRef(nullptr); 456 } 457 458 if (D->getDeclContext() == D->getLexicalDeclContext() && 459 !D->hasAttrs() && 460 !D->isImplicit() && 461 !D->isUsed(false) && 462 !D->hasExtInfo() && 463 !D->getTypedefNameForAnonDecl() && 464 D->getFirstDecl() == D->getMostRecentDecl() && 465 !D->isInvalidDecl() && 466 !D->isReferenced() && 467 !D->isTopLevelDeclInObjCContainer() && 468 D->getAccess() == AS_none && 469 !D->isModulePrivate() && 470 !CXXRecordDecl::classofKind(D->getKind()) && 471 !D->getIntegerTypeSourceInfo() && 472 !D->getMemberSpecializationInfo() && 473 !needsAnonymousDeclarationNumber(D) && 474 D->getDeclName().getNameKind() == DeclarationName::Identifier) 475 AbbrevToUse = Writer.getDeclEnumAbbrev(); 476 477 Code = serialization::DECL_ENUM; 478 } 479 480 void ASTDeclWriter::VisitRecordDecl(RecordDecl *D) { 481 VisitTagDecl(D); 482 Record.push_back(D->hasFlexibleArrayMember()); 483 Record.push_back(D->isAnonymousStructOrUnion()); 484 Record.push_back(D->hasObjectMember()); 485 Record.push_back(D->hasVolatileMember()); 486 Record.push_back(D->isNonTrivialToPrimitiveDefaultInitialize()); 487 Record.push_back(D->isNonTrivialToPrimitiveCopy()); 488 Record.push_back(D->isNonTrivialToPrimitiveDestroy()); 489 Record.push_back(D->hasNonTrivialToPrimitiveDefaultInitializeCUnion()); 490 Record.push_back(D->hasNonTrivialToPrimitiveDestructCUnion()); 491 Record.push_back(D->hasNonTrivialToPrimitiveCopyCUnion()); 492 Record.push_back(D->isParamDestroyedInCallee()); 493 Record.push_back(D->getArgPassingRestrictions()); 494 // Only compute this for C/Objective-C, in C++ this is computed as part 495 // of CXXRecordDecl. 496 if (!isa<CXXRecordDecl>(D)) 497 Record.push_back(D->getODRHash()); 498 499 if (D->getDeclContext() == D->getLexicalDeclContext() && 500 !D->hasAttrs() && 501 !D->isImplicit() && 502 !D->isUsed(false) && 503 !D->hasExtInfo() && 504 !D->getTypedefNameForAnonDecl() && 505 D->getFirstDecl() == D->getMostRecentDecl() && 506 !D->isInvalidDecl() && 507 !D->isReferenced() && 508 !D->isTopLevelDeclInObjCContainer() && 509 D->getAccess() == AS_none && 510 !D->isModulePrivate() && 511 !CXXRecordDecl::classofKind(D->getKind()) && 512 !needsAnonymousDeclarationNumber(D) && 513 D->getDeclName().getNameKind() == DeclarationName::Identifier) 514 AbbrevToUse = Writer.getDeclRecordAbbrev(); 515 516 Code = serialization::DECL_RECORD; 517 } 518 519 void ASTDeclWriter::VisitValueDecl(ValueDecl *D) { 520 VisitNamedDecl(D); 521 Record.AddTypeRef(D->getType()); 522 } 523 524 void ASTDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) { 525 VisitValueDecl(D); 526 Record.push_back(D->getInitExpr()? 1 : 0); 527 if (D->getInitExpr()) 528 Record.AddStmt(D->getInitExpr()); 529 Record.AddAPSInt(D->getInitVal()); 530 531 Code = serialization::DECL_ENUM_CONSTANT; 532 } 533 534 void ASTDeclWriter::VisitDeclaratorDecl(DeclaratorDecl *D) { 535 VisitValueDecl(D); 536 Record.AddSourceLocation(D->getInnerLocStart()); 537 Record.push_back(D->hasExtInfo()); 538 if (D->hasExtInfo()) { 539 DeclaratorDecl::ExtInfo *Info = D->getExtInfo(); 540 Record.AddQualifierInfo(*Info); 541 Record.AddStmt(Info->TrailingRequiresClause); 542 } 543 // The location information is deferred until the end of the record. 544 Record.AddTypeRef(D->getTypeSourceInfo() ? D->getTypeSourceInfo()->getType() 545 : QualType()); 546 } 547 548 void ASTDeclWriter::VisitFunctionDecl(FunctionDecl *D) { 549 VisitRedeclarable(D); 550 551 Record.push_back(D->getTemplatedKind()); 552 switch (D->getTemplatedKind()) { 553 case FunctionDecl::TK_NonTemplate: 554 break; 555 case FunctionDecl::TK_DependentNonTemplate: 556 Record.AddDeclRef(D->getInstantiatedFromDecl()); 557 break; 558 case FunctionDecl::TK_FunctionTemplate: 559 Record.AddDeclRef(D->getDescribedFunctionTemplate()); 560 break; 561 case FunctionDecl::TK_MemberSpecialization: { 562 MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo(); 563 Record.AddDeclRef(MemberInfo->getInstantiatedFrom()); 564 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 565 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation()); 566 break; 567 } 568 case FunctionDecl::TK_FunctionTemplateSpecialization: { 569 FunctionTemplateSpecializationInfo * 570 FTSInfo = D->getTemplateSpecializationInfo(); 571 572 RegisterTemplateSpecialization(FTSInfo->getTemplate(), D); 573 574 Record.AddDeclRef(FTSInfo->getTemplate()); 575 Record.push_back(FTSInfo->getTemplateSpecializationKind()); 576 577 // Template arguments. 578 Record.AddTemplateArgumentList(FTSInfo->TemplateArguments); 579 580 // Template args as written. 581 Record.push_back(FTSInfo->TemplateArgumentsAsWritten != nullptr); 582 if (FTSInfo->TemplateArgumentsAsWritten) { 583 Record.push_back(FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs); 584 for (int i=0, e = FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs; 585 i!=e; ++i) 586 Record.AddTemplateArgumentLoc( 587 (*FTSInfo->TemplateArgumentsAsWritten)[i]); 588 Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->LAngleLoc); 589 Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->RAngleLoc); 590 } 591 592 Record.AddSourceLocation(FTSInfo->getPointOfInstantiation()); 593 594 if (MemberSpecializationInfo *MemberInfo = 595 FTSInfo->getMemberSpecializationInfo()) { 596 Record.push_back(1); 597 Record.AddDeclRef(MemberInfo->getInstantiatedFrom()); 598 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 599 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation()); 600 } else { 601 Record.push_back(0); 602 } 603 604 if (D->isCanonicalDecl()) { 605 // Write the template that contains the specializations set. We will 606 // add a FunctionTemplateSpecializationInfo to it when reading. 607 Record.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl()); 608 } 609 break; 610 } 611 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: { 612 DependentFunctionTemplateSpecializationInfo * 613 DFTSInfo = D->getDependentSpecializationInfo(); 614 615 // Templates. 616 Record.push_back(DFTSInfo->getNumTemplates()); 617 for (int i=0, e = DFTSInfo->getNumTemplates(); i != e; ++i) 618 Record.AddDeclRef(DFTSInfo->getTemplate(i)); 619 620 // Templates args. 621 Record.push_back(DFTSInfo->getNumTemplateArgs()); 622 for (int i=0, e = DFTSInfo->getNumTemplateArgs(); i != e; ++i) 623 Record.AddTemplateArgumentLoc(DFTSInfo->getTemplateArg(i)); 624 Record.AddSourceLocation(DFTSInfo->getLAngleLoc()); 625 Record.AddSourceLocation(DFTSInfo->getRAngleLoc()); 626 break; 627 } 628 } 629 630 VisitDeclaratorDecl(D); 631 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName()); 632 Record.push_back(D->getIdentifierNamespace()); 633 634 // FunctionDecl's body is handled last at ASTWriterDecl::Visit, 635 // after everything else is written. 636 Record.push_back( 637 static_cast<int>(D->getStorageClass())); // FIXME: stable encoding 638 Record.push_back(D->isInlineSpecified()); 639 Record.push_back(D->isInlined()); 640 Record.push_back(D->isVirtualAsWritten()); 641 Record.push_back(D->isPure()); 642 Record.push_back(D->hasInheritedPrototype()); 643 Record.push_back(D->hasWrittenPrototype()); 644 Record.push_back(D->isDeletedBit()); 645 Record.push_back(D->isTrivial()); 646 Record.push_back(D->isTrivialForCall()); 647 Record.push_back(D->isDefaulted()); 648 Record.push_back(D->isExplicitlyDefaulted()); 649 Record.push_back(D->isIneligibleOrNotSelected()); 650 Record.push_back(D->hasImplicitReturnZero()); 651 Record.push_back(static_cast<uint64_t>(D->getConstexprKind())); 652 Record.push_back(D->usesSEHTry()); 653 Record.push_back(D->hasSkippedBody()); 654 Record.push_back(D->isMultiVersion()); 655 Record.push_back(D->isLateTemplateParsed()); 656 Record.push_back(D->FriendConstraintRefersToEnclosingTemplate()); 657 Record.push_back(D->getLinkageInternal()); 658 Record.AddSourceLocation(D->getEndLoc()); 659 Record.AddSourceLocation(D->getDefaultLoc()); 660 661 Record.push_back(D->getODRHash()); 662 663 if (D->isDefaulted()) { 664 if (auto *FDI = D->getDefaultedFunctionInfo()) { 665 Record.push_back(FDI->getUnqualifiedLookups().size()); 666 for (DeclAccessPair P : FDI->getUnqualifiedLookups()) { 667 Record.AddDeclRef(P.getDecl()); 668 Record.push_back(P.getAccess()); 669 } 670 } else { 671 Record.push_back(0); 672 } 673 } 674 675 Record.push_back(D->param_size()); 676 for (auto *P : D->parameters()) 677 Record.AddDeclRef(P); 678 Code = serialization::DECL_FUNCTION; 679 } 680 681 static void addExplicitSpecifier(ExplicitSpecifier ES, 682 ASTRecordWriter &Record) { 683 uint64_t Kind = static_cast<uint64_t>(ES.getKind()); 684 Kind = Kind << 1 | static_cast<bool>(ES.getExpr()); 685 Record.push_back(Kind); 686 if (ES.getExpr()) { 687 Record.AddStmt(ES.getExpr()); 688 } 689 } 690 691 void ASTDeclWriter::VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D) { 692 addExplicitSpecifier(D->getExplicitSpecifier(), Record); 693 Record.AddDeclRef(D->Ctor); 694 VisitFunctionDecl(D); 695 Record.push_back(D->isCopyDeductionCandidate()); 696 Code = serialization::DECL_CXX_DEDUCTION_GUIDE; 697 } 698 699 void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) { 700 VisitNamedDecl(D); 701 // FIXME: convert to LazyStmtPtr? 702 // Unlike C/C++, method bodies will never be in header files. 703 bool HasBodyStuff = D->getBody() != nullptr; 704 Record.push_back(HasBodyStuff); 705 if (HasBodyStuff) { 706 Record.AddStmt(D->getBody()); 707 } 708 Record.AddDeclRef(D->getSelfDecl()); 709 Record.AddDeclRef(D->getCmdDecl()); 710 Record.push_back(D->isInstanceMethod()); 711 Record.push_back(D->isVariadic()); 712 Record.push_back(D->isPropertyAccessor()); 713 Record.push_back(D->isSynthesizedAccessorStub()); 714 Record.push_back(D->isDefined()); 715 Record.push_back(D->isOverriding()); 716 Record.push_back(D->hasSkippedBody()); 717 718 Record.push_back(D->isRedeclaration()); 719 Record.push_back(D->hasRedeclaration()); 720 if (D->hasRedeclaration()) { 721 assert(Context.getObjCMethodRedeclaration(D)); 722 Record.AddDeclRef(Context.getObjCMethodRedeclaration(D)); 723 } 724 725 // FIXME: stable encoding for @required/@optional 726 Record.push_back(D->getImplementationControl()); 727 // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway/nullability 728 Record.push_back(D->getObjCDeclQualifier()); 729 Record.push_back(D->hasRelatedResultType()); 730 Record.AddTypeRef(D->getReturnType()); 731 Record.AddTypeSourceInfo(D->getReturnTypeSourceInfo()); 732 Record.AddSourceLocation(D->getEndLoc()); 733 Record.push_back(D->param_size()); 734 for (const auto *P : D->parameters()) 735 Record.AddDeclRef(P); 736 737 Record.push_back(D->getSelLocsKind()); 738 unsigned NumStoredSelLocs = D->getNumStoredSelLocs(); 739 SourceLocation *SelLocs = D->getStoredSelLocs(); 740 Record.push_back(NumStoredSelLocs); 741 for (unsigned i = 0; i != NumStoredSelLocs; ++i) 742 Record.AddSourceLocation(SelLocs[i]); 743 744 Code = serialization::DECL_OBJC_METHOD; 745 } 746 747 void ASTDeclWriter::VisitObjCTypeParamDecl(ObjCTypeParamDecl *D) { 748 VisitTypedefNameDecl(D); 749 Record.push_back(D->Variance); 750 Record.push_back(D->Index); 751 Record.AddSourceLocation(D->VarianceLoc); 752 Record.AddSourceLocation(D->ColonLoc); 753 754 Code = serialization::DECL_OBJC_TYPE_PARAM; 755 } 756 757 void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) { 758 VisitNamedDecl(D); 759 Record.AddSourceLocation(D->getAtStartLoc()); 760 Record.AddSourceRange(D->getAtEndRange()); 761 // Abstract class (no need to define a stable serialization::DECL code). 762 } 763 764 void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) { 765 VisitRedeclarable(D); 766 VisitObjCContainerDecl(D); 767 Record.AddTypeRef(QualType(D->getTypeForDecl(), 0)); 768 AddObjCTypeParamList(D->TypeParamList); 769 770 Record.push_back(D->isThisDeclarationADefinition()); 771 if (D->isThisDeclarationADefinition()) { 772 // Write the DefinitionData 773 ObjCInterfaceDecl::DefinitionData &Data = D->data(); 774 775 Record.AddTypeSourceInfo(D->getSuperClassTInfo()); 776 Record.AddSourceLocation(D->getEndOfDefinitionLoc()); 777 Record.push_back(Data.HasDesignatedInitializers); 778 Record.push_back(D->getODRHash()); 779 780 // Write out the protocols that are directly referenced by the @interface. 781 Record.push_back(Data.ReferencedProtocols.size()); 782 for (const auto *P : D->protocols()) 783 Record.AddDeclRef(P); 784 for (const auto &PL : D->protocol_locs()) 785 Record.AddSourceLocation(PL); 786 787 // Write out the protocols that are transitively referenced. 788 Record.push_back(Data.AllReferencedProtocols.size()); 789 for (ObjCList<ObjCProtocolDecl>::iterator 790 P = Data.AllReferencedProtocols.begin(), 791 PEnd = Data.AllReferencedProtocols.end(); 792 P != PEnd; ++P) 793 Record.AddDeclRef(*P); 794 795 796 if (ObjCCategoryDecl *Cat = D->getCategoryListRaw()) { 797 // Ensure that we write out the set of categories for this class. 798 Writer.ObjCClassesWithCategories.insert(D); 799 800 // Make sure that the categories get serialized. 801 for (; Cat; Cat = Cat->getNextClassCategoryRaw()) 802 (void)Writer.GetDeclRef(Cat); 803 } 804 } 805 806 Code = serialization::DECL_OBJC_INTERFACE; 807 } 808 809 void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) { 810 VisitFieldDecl(D); 811 // FIXME: stable encoding for @public/@private/@protected/@package 812 Record.push_back(D->getAccessControl()); 813 Record.push_back(D->getSynthesize()); 814 815 if (D->getDeclContext() == D->getLexicalDeclContext() && 816 !D->hasAttrs() && 817 !D->isImplicit() && 818 !D->isUsed(false) && 819 !D->isInvalidDecl() && 820 !D->isReferenced() && 821 !D->isModulePrivate() && 822 !D->getBitWidth() && 823 !D->hasExtInfo() && 824 D->getDeclName()) 825 AbbrevToUse = Writer.getDeclObjCIvarAbbrev(); 826 827 Code = serialization::DECL_OBJC_IVAR; 828 } 829 830 void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) { 831 VisitRedeclarable(D); 832 VisitObjCContainerDecl(D); 833 834 Record.push_back(D->isThisDeclarationADefinition()); 835 if (D->isThisDeclarationADefinition()) { 836 Record.push_back(D->protocol_size()); 837 for (const auto *I : D->protocols()) 838 Record.AddDeclRef(I); 839 for (const auto &PL : D->protocol_locs()) 840 Record.AddSourceLocation(PL); 841 Record.push_back(D->getODRHash()); 842 } 843 844 Code = serialization::DECL_OBJC_PROTOCOL; 845 } 846 847 void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) { 848 VisitFieldDecl(D); 849 Code = serialization::DECL_OBJC_AT_DEFS_FIELD; 850 } 851 852 void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) { 853 VisitObjCContainerDecl(D); 854 Record.AddSourceLocation(D->getCategoryNameLoc()); 855 Record.AddSourceLocation(D->getIvarLBraceLoc()); 856 Record.AddSourceLocation(D->getIvarRBraceLoc()); 857 Record.AddDeclRef(D->getClassInterface()); 858 AddObjCTypeParamList(D->TypeParamList); 859 Record.push_back(D->protocol_size()); 860 for (const auto *I : D->protocols()) 861 Record.AddDeclRef(I); 862 for (const auto &PL : D->protocol_locs()) 863 Record.AddSourceLocation(PL); 864 Code = serialization::DECL_OBJC_CATEGORY; 865 } 866 867 void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) { 868 VisitNamedDecl(D); 869 Record.AddDeclRef(D->getClassInterface()); 870 Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS; 871 } 872 873 void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) { 874 VisitNamedDecl(D); 875 Record.AddSourceLocation(D->getAtLoc()); 876 Record.AddSourceLocation(D->getLParenLoc()); 877 Record.AddTypeRef(D->getType()); 878 Record.AddTypeSourceInfo(D->getTypeSourceInfo()); 879 // FIXME: stable encoding 880 Record.push_back((unsigned)D->getPropertyAttributes()); 881 Record.push_back((unsigned)D->getPropertyAttributesAsWritten()); 882 // FIXME: stable encoding 883 Record.push_back((unsigned)D->getPropertyImplementation()); 884 Record.AddDeclarationName(D->getGetterName()); 885 Record.AddSourceLocation(D->getGetterNameLoc()); 886 Record.AddDeclarationName(D->getSetterName()); 887 Record.AddSourceLocation(D->getSetterNameLoc()); 888 Record.AddDeclRef(D->getGetterMethodDecl()); 889 Record.AddDeclRef(D->getSetterMethodDecl()); 890 Record.AddDeclRef(D->getPropertyIvarDecl()); 891 Code = serialization::DECL_OBJC_PROPERTY; 892 } 893 894 void ASTDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) { 895 VisitObjCContainerDecl(D); 896 Record.AddDeclRef(D->getClassInterface()); 897 // Abstract class (no need to define a stable serialization::DECL code). 898 } 899 900 void ASTDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { 901 VisitObjCImplDecl(D); 902 Record.AddSourceLocation(D->getCategoryNameLoc()); 903 Code = serialization::DECL_OBJC_CATEGORY_IMPL; 904 } 905 906 void ASTDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { 907 VisitObjCImplDecl(D); 908 Record.AddDeclRef(D->getSuperClass()); 909 Record.AddSourceLocation(D->getSuperClassLoc()); 910 Record.AddSourceLocation(D->getIvarLBraceLoc()); 911 Record.AddSourceLocation(D->getIvarRBraceLoc()); 912 Record.push_back(D->hasNonZeroConstructors()); 913 Record.push_back(D->hasDestructors()); 914 Record.push_back(D->NumIvarInitializers); 915 if (D->NumIvarInitializers) 916 Record.AddCXXCtorInitializers( 917 llvm::ArrayRef(D->init_begin(), D->init_end())); 918 Code = serialization::DECL_OBJC_IMPLEMENTATION; 919 } 920 921 void ASTDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) { 922 VisitDecl(D); 923 Record.AddSourceLocation(D->getBeginLoc()); 924 Record.AddDeclRef(D->getPropertyDecl()); 925 Record.AddDeclRef(D->getPropertyIvarDecl()); 926 Record.AddSourceLocation(D->getPropertyIvarDeclLoc()); 927 Record.AddDeclRef(D->getGetterMethodDecl()); 928 Record.AddDeclRef(D->getSetterMethodDecl()); 929 Record.AddStmt(D->getGetterCXXConstructor()); 930 Record.AddStmt(D->getSetterCXXAssignment()); 931 Code = serialization::DECL_OBJC_PROPERTY_IMPL; 932 } 933 934 void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) { 935 VisitDeclaratorDecl(D); 936 Record.push_back(D->isMutable()); 937 938 FieldDecl::InitStorageKind ISK = D->InitStorage.getInt(); 939 Record.push_back(ISK); 940 if (ISK == FieldDecl::ISK_CapturedVLAType) 941 Record.AddTypeRef(QualType(D->getCapturedVLAType(), 0)); 942 else if (ISK) 943 Record.AddStmt(D->getInClassInitializer()); 944 945 Record.AddStmt(D->getBitWidth()); 946 947 if (!D->getDeclName()) 948 Record.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D)); 949 950 if (D->getDeclContext() == D->getLexicalDeclContext() && 951 !D->hasAttrs() && 952 !D->isImplicit() && 953 !D->isUsed(false) && 954 !D->isInvalidDecl() && 955 !D->isReferenced() && 956 !D->isTopLevelDeclInObjCContainer() && 957 !D->isModulePrivate() && 958 !D->getBitWidth() && 959 !D->hasInClassInitializer() && 960 !D->hasCapturedVLAType() && 961 !D->hasExtInfo() && 962 !ObjCIvarDecl::classofKind(D->getKind()) && 963 !ObjCAtDefsFieldDecl::classofKind(D->getKind()) && 964 D->getDeclName()) 965 AbbrevToUse = Writer.getDeclFieldAbbrev(); 966 967 Code = serialization::DECL_FIELD; 968 } 969 970 void ASTDeclWriter::VisitMSPropertyDecl(MSPropertyDecl *D) { 971 VisitDeclaratorDecl(D); 972 Record.AddIdentifierRef(D->getGetterId()); 973 Record.AddIdentifierRef(D->getSetterId()); 974 Code = serialization::DECL_MS_PROPERTY; 975 } 976 977 void ASTDeclWriter::VisitMSGuidDecl(MSGuidDecl *D) { 978 VisitValueDecl(D); 979 MSGuidDecl::Parts Parts = D->getParts(); 980 Record.push_back(Parts.Part1); 981 Record.push_back(Parts.Part2); 982 Record.push_back(Parts.Part3); 983 Record.append(std::begin(Parts.Part4And5), std::end(Parts.Part4And5)); 984 Code = serialization::DECL_MS_GUID; 985 } 986 987 void ASTDeclWriter::VisitUnnamedGlobalConstantDecl( 988 UnnamedGlobalConstantDecl *D) { 989 VisitValueDecl(D); 990 Record.AddAPValue(D->getValue()); 991 Code = serialization::DECL_UNNAMED_GLOBAL_CONSTANT; 992 } 993 994 void ASTDeclWriter::VisitTemplateParamObjectDecl(TemplateParamObjectDecl *D) { 995 VisitValueDecl(D); 996 Record.AddAPValue(D->getValue()); 997 Code = serialization::DECL_TEMPLATE_PARAM_OBJECT; 998 } 999 1000 void ASTDeclWriter::VisitIndirectFieldDecl(IndirectFieldDecl *D) { 1001 VisitValueDecl(D); 1002 Record.push_back(D->getChainingSize()); 1003 1004 for (const auto *P : D->chain()) 1005 Record.AddDeclRef(P); 1006 Code = serialization::DECL_INDIRECTFIELD; 1007 } 1008 1009 void ASTDeclWriter::VisitVarDecl(VarDecl *D) { 1010 VisitRedeclarable(D); 1011 VisitDeclaratorDecl(D); 1012 Record.push_back(D->getStorageClass()); 1013 Record.push_back(D->getTSCSpec()); 1014 Record.push_back(D->getInitStyle()); 1015 Record.push_back(D->isARCPseudoStrong()); 1016 if (!isa<ParmVarDecl>(D)) { 1017 Record.push_back(D->isThisDeclarationADemotedDefinition()); 1018 Record.push_back(D->isExceptionVariable()); 1019 Record.push_back(D->isNRVOVariable()); 1020 Record.push_back(D->isCXXForRangeDecl()); 1021 Record.push_back(D->isObjCForDecl()); 1022 Record.push_back(D->isInline()); 1023 Record.push_back(D->isInlineSpecified()); 1024 Record.push_back(D->isConstexpr()); 1025 Record.push_back(D->isInitCapture()); 1026 Record.push_back(D->isPreviousDeclInSameBlockScope()); 1027 if (const auto *IPD = dyn_cast<ImplicitParamDecl>(D)) 1028 Record.push_back(static_cast<unsigned>(IPD->getParameterKind())); 1029 else 1030 Record.push_back(0); 1031 Record.push_back(D->isEscapingByref()); 1032 } 1033 Record.push_back(D->getLinkageInternal()); 1034 1035 Record.AddVarDeclInit(D); 1036 1037 if (D->hasAttr<BlocksAttr>() && D->getType()->getAsCXXRecordDecl()) { 1038 BlockVarCopyInit Init = Writer.Context->getBlockVarCopyInit(D); 1039 Record.AddStmt(Init.getCopyExpr()); 1040 if (Init.getCopyExpr()) 1041 Record.push_back(Init.canThrow()); 1042 } 1043 1044 if (D->getStorageDuration() == SD_Static) { 1045 bool ModulesCodegen = false; 1046 if (Writer.WritingModule && 1047 !D->getDescribedVarTemplate() && !D->getMemberSpecializationInfo()) { 1048 // When building a C++20 module interface unit or a partition unit, a 1049 // strong definition in the module interface is provided by the 1050 // compilation of that unit, not by its users. (Inline variables are still 1051 // emitted in module users.) 1052 ModulesCodegen = 1053 (Writer.WritingModule->isInterfaceOrPartition() || 1054 (D->hasAttr<DLLExportAttr>() && 1055 Writer.Context->getLangOpts().BuildingPCHWithObjectFile)) && 1056 Writer.Context->GetGVALinkageForVariable(D) == GVA_StrongExternal; 1057 } 1058 Record.push_back(ModulesCodegen); 1059 if (ModulesCodegen) 1060 Writer.ModularCodegenDecls.push_back(Writer.GetDeclRef(D)); 1061 } 1062 1063 enum { 1064 VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization 1065 }; 1066 if (VarTemplateDecl *TemplD = D->getDescribedVarTemplate()) { 1067 Record.push_back(VarTemplate); 1068 Record.AddDeclRef(TemplD); 1069 } else if (MemberSpecializationInfo *SpecInfo 1070 = D->getMemberSpecializationInfo()) { 1071 Record.push_back(StaticDataMemberSpecialization); 1072 Record.AddDeclRef(SpecInfo->getInstantiatedFrom()); 1073 Record.push_back(SpecInfo->getTemplateSpecializationKind()); 1074 Record.AddSourceLocation(SpecInfo->getPointOfInstantiation()); 1075 } else { 1076 Record.push_back(VarNotTemplate); 1077 } 1078 1079 if (D->getDeclContext() == D->getLexicalDeclContext() && 1080 !D->hasAttrs() && 1081 !D->isImplicit() && 1082 !D->isUsed(false) && 1083 !D->isInvalidDecl() && 1084 !D->isReferenced() && 1085 !D->isTopLevelDeclInObjCContainer() && 1086 D->getAccess() == AS_none && 1087 !D->isModulePrivate() && 1088 !needsAnonymousDeclarationNumber(D) && 1089 D->getDeclName().getNameKind() == DeclarationName::Identifier && 1090 !D->hasExtInfo() && 1091 D->getFirstDecl() == D->getMostRecentDecl() && 1092 D->getKind() == Decl::Var && 1093 !D->isInline() && 1094 !D->isConstexpr() && 1095 !D->isInitCapture() && 1096 !D->isPreviousDeclInSameBlockScope() && 1097 !(D->hasAttr<BlocksAttr>() && D->getType()->getAsCXXRecordDecl()) && 1098 !D->isEscapingByref() && 1099 D->getStorageDuration() != SD_Static && 1100 !D->getMemberSpecializationInfo()) 1101 AbbrevToUse = Writer.getDeclVarAbbrev(); 1102 1103 Code = serialization::DECL_VAR; 1104 } 1105 1106 void ASTDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) { 1107 VisitVarDecl(D); 1108 Code = serialization::DECL_IMPLICIT_PARAM; 1109 } 1110 1111 void ASTDeclWriter::VisitParmVarDecl(ParmVarDecl *D) { 1112 VisitVarDecl(D); 1113 Record.push_back(D->isObjCMethodParameter()); 1114 Record.push_back(D->getFunctionScopeDepth()); 1115 Record.push_back(D->getFunctionScopeIndex()); 1116 Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding 1117 Record.push_back(D->isKNRPromoted()); 1118 Record.push_back(D->hasInheritedDefaultArg()); 1119 Record.push_back(D->hasUninstantiatedDefaultArg()); 1120 if (D->hasUninstantiatedDefaultArg()) 1121 Record.AddStmt(D->getUninstantiatedDefaultArg()); 1122 Code = serialization::DECL_PARM_VAR; 1123 1124 // If the assumptions about the DECL_PARM_VAR abbrev are true, use it. Here 1125 // we dynamically check for the properties that we optimize for, but don't 1126 // know are true of all PARM_VAR_DECLs. 1127 if (D->getDeclContext() == D->getLexicalDeclContext() && 1128 !D->hasAttrs() && 1129 !D->hasExtInfo() && 1130 !D->isImplicit() && 1131 !D->isUsed(false) && 1132 !D->isInvalidDecl() && 1133 !D->isReferenced() && 1134 D->getAccess() == AS_none && 1135 !D->isModulePrivate() && 1136 D->getStorageClass() == 0 && 1137 D->getInitStyle() == VarDecl::CInit && // Can params have anything else? 1138 D->getFunctionScopeDepth() == 0 && 1139 D->getObjCDeclQualifier() == 0 && 1140 !D->isKNRPromoted() && 1141 !D->hasInheritedDefaultArg() && 1142 D->getInit() == nullptr && 1143 !D->hasUninstantiatedDefaultArg()) // No default expr. 1144 AbbrevToUse = Writer.getDeclParmVarAbbrev(); 1145 1146 // Check things we know are true of *every* PARM_VAR_DECL, which is more than 1147 // just us assuming it. 1148 assert(!D->getTSCSpec() && "PARM_VAR_DECL can't use TLS"); 1149 assert(!D->isThisDeclarationADemotedDefinition() 1150 && "PARM_VAR_DECL can't be demoted definition."); 1151 assert(D->getAccess() == AS_none && "PARM_VAR_DECL can't be public/private"); 1152 assert(!D->isExceptionVariable() && "PARM_VAR_DECL can't be exception var"); 1153 assert(D->getPreviousDecl() == nullptr && "PARM_VAR_DECL can't be redecl"); 1154 assert(!D->isStaticDataMember() && 1155 "PARM_VAR_DECL can't be static data member"); 1156 } 1157 1158 void ASTDeclWriter::VisitDecompositionDecl(DecompositionDecl *D) { 1159 // Record the number of bindings first to simplify deserialization. 1160 Record.push_back(D->bindings().size()); 1161 1162 VisitVarDecl(D); 1163 for (auto *B : D->bindings()) 1164 Record.AddDeclRef(B); 1165 Code = serialization::DECL_DECOMPOSITION; 1166 } 1167 1168 void ASTDeclWriter::VisitBindingDecl(BindingDecl *D) { 1169 VisitValueDecl(D); 1170 Record.AddStmt(D->getBinding()); 1171 Code = serialization::DECL_BINDING; 1172 } 1173 1174 void ASTDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) { 1175 VisitDecl(D); 1176 Record.AddStmt(D->getAsmString()); 1177 Record.AddSourceLocation(D->getRParenLoc()); 1178 Code = serialization::DECL_FILE_SCOPE_ASM; 1179 } 1180 1181 void ASTDeclWriter::VisitTopLevelStmtDecl(TopLevelStmtDecl *D) { 1182 VisitDecl(D); 1183 Record.AddStmt(D->getStmt()); 1184 Code = serialization::DECL_TOP_LEVEL_STMT_DECL; 1185 } 1186 1187 void ASTDeclWriter::VisitEmptyDecl(EmptyDecl *D) { 1188 VisitDecl(D); 1189 Code = serialization::DECL_EMPTY; 1190 } 1191 1192 void ASTDeclWriter::VisitLifetimeExtendedTemporaryDecl( 1193 LifetimeExtendedTemporaryDecl *D) { 1194 VisitDecl(D); 1195 Record.AddDeclRef(D->getExtendingDecl()); 1196 Record.AddStmt(D->getTemporaryExpr()); 1197 Record.push_back(static_cast<bool>(D->getValue())); 1198 if (D->getValue()) 1199 Record.AddAPValue(*D->getValue()); 1200 Record.push_back(D->getManglingNumber()); 1201 Code = serialization::DECL_LIFETIME_EXTENDED_TEMPORARY; 1202 } 1203 void ASTDeclWriter::VisitBlockDecl(BlockDecl *D) { 1204 VisitDecl(D); 1205 Record.AddStmt(D->getBody()); 1206 Record.AddTypeSourceInfo(D->getSignatureAsWritten()); 1207 Record.push_back(D->param_size()); 1208 for (ParmVarDecl *P : D->parameters()) 1209 Record.AddDeclRef(P); 1210 Record.push_back(D->isVariadic()); 1211 Record.push_back(D->blockMissingReturnType()); 1212 Record.push_back(D->isConversionFromLambda()); 1213 Record.push_back(D->doesNotEscape()); 1214 Record.push_back(D->canAvoidCopyToHeap()); 1215 Record.push_back(D->capturesCXXThis()); 1216 Record.push_back(D->getNumCaptures()); 1217 for (const auto &capture : D->captures()) { 1218 Record.AddDeclRef(capture.getVariable()); 1219 1220 unsigned flags = 0; 1221 if (capture.isByRef()) flags |= 1; 1222 if (capture.isNested()) flags |= 2; 1223 if (capture.hasCopyExpr()) flags |= 4; 1224 Record.push_back(flags); 1225 1226 if (capture.hasCopyExpr()) Record.AddStmt(capture.getCopyExpr()); 1227 } 1228 1229 Code = serialization::DECL_BLOCK; 1230 } 1231 1232 void ASTDeclWriter::VisitCapturedDecl(CapturedDecl *CD) { 1233 Record.push_back(CD->getNumParams()); 1234 VisitDecl(CD); 1235 Record.push_back(CD->getContextParamPosition()); 1236 Record.push_back(CD->isNothrow() ? 1 : 0); 1237 // Body is stored by VisitCapturedStmt. 1238 for (unsigned I = 0; I < CD->getNumParams(); ++I) 1239 Record.AddDeclRef(CD->getParam(I)); 1240 Code = serialization::DECL_CAPTURED; 1241 } 1242 1243 void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) { 1244 VisitDecl(D); 1245 Record.push_back(D->getLanguage()); 1246 Record.AddSourceLocation(D->getExternLoc()); 1247 Record.AddSourceLocation(D->getRBraceLoc()); 1248 Code = serialization::DECL_LINKAGE_SPEC; 1249 } 1250 1251 void ASTDeclWriter::VisitExportDecl(ExportDecl *D) { 1252 VisitDecl(D); 1253 Record.AddSourceLocation(D->getRBraceLoc()); 1254 Code = serialization::DECL_EXPORT; 1255 } 1256 1257 void ASTDeclWriter::VisitLabelDecl(LabelDecl *D) { 1258 VisitNamedDecl(D); 1259 Record.AddSourceLocation(D->getBeginLoc()); 1260 Code = serialization::DECL_LABEL; 1261 } 1262 1263 1264 void ASTDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) { 1265 VisitRedeclarable(D); 1266 VisitNamedDecl(D); 1267 Record.push_back(D->isInline()); 1268 Record.push_back(D->isNested()); 1269 Record.AddSourceLocation(D->getBeginLoc()); 1270 Record.AddSourceLocation(D->getRBraceLoc()); 1271 1272 if (D->isOriginalNamespace()) 1273 Record.AddDeclRef(D->getAnonymousNamespace()); 1274 Code = serialization::DECL_NAMESPACE; 1275 1276 if (Writer.hasChain() && D->isAnonymousNamespace() && 1277 D == D->getMostRecentDecl()) { 1278 // This is a most recent reopening of the anonymous namespace. If its parent 1279 // is in a previous PCH (or is the TU), mark that parent for update, because 1280 // the original namespace always points to the latest re-opening of its 1281 // anonymous namespace. 1282 Decl *Parent = cast<Decl>( 1283 D->getParent()->getRedeclContext()->getPrimaryContext()); 1284 if (Parent->isFromASTFile() || isa<TranslationUnitDecl>(Parent)) { 1285 Writer.DeclUpdates[Parent].push_back( 1286 ASTWriter::DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, D)); 1287 } 1288 } 1289 } 1290 1291 void ASTDeclWriter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { 1292 VisitRedeclarable(D); 1293 VisitNamedDecl(D); 1294 Record.AddSourceLocation(D->getNamespaceLoc()); 1295 Record.AddSourceLocation(D->getTargetNameLoc()); 1296 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1297 Record.AddDeclRef(D->getNamespace()); 1298 Code = serialization::DECL_NAMESPACE_ALIAS; 1299 } 1300 1301 void ASTDeclWriter::VisitUsingDecl(UsingDecl *D) { 1302 VisitNamedDecl(D); 1303 Record.AddSourceLocation(D->getUsingLoc()); 1304 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1305 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName()); 1306 Record.AddDeclRef(D->FirstUsingShadow.getPointer()); 1307 Record.push_back(D->hasTypename()); 1308 Record.AddDeclRef(Context.getInstantiatedFromUsingDecl(D)); 1309 Code = serialization::DECL_USING; 1310 } 1311 1312 void ASTDeclWriter::VisitUsingEnumDecl(UsingEnumDecl *D) { 1313 VisitNamedDecl(D); 1314 Record.AddSourceLocation(D->getUsingLoc()); 1315 Record.AddSourceLocation(D->getEnumLoc()); 1316 Record.AddTypeSourceInfo(D->getEnumType()); 1317 Record.AddDeclRef(D->FirstUsingShadow.getPointer()); 1318 Record.AddDeclRef(Context.getInstantiatedFromUsingEnumDecl(D)); 1319 Code = serialization::DECL_USING_ENUM; 1320 } 1321 1322 void ASTDeclWriter::VisitUsingPackDecl(UsingPackDecl *D) { 1323 Record.push_back(D->NumExpansions); 1324 VisitNamedDecl(D); 1325 Record.AddDeclRef(D->getInstantiatedFromUsingDecl()); 1326 for (auto *E : D->expansions()) 1327 Record.AddDeclRef(E); 1328 Code = serialization::DECL_USING_PACK; 1329 } 1330 1331 void ASTDeclWriter::VisitUsingShadowDecl(UsingShadowDecl *D) { 1332 VisitRedeclarable(D); 1333 VisitNamedDecl(D); 1334 Record.AddDeclRef(D->getTargetDecl()); 1335 Record.push_back(D->getIdentifierNamespace()); 1336 Record.AddDeclRef(D->UsingOrNextShadow); 1337 Record.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D)); 1338 Code = serialization::DECL_USING_SHADOW; 1339 } 1340 1341 void ASTDeclWriter::VisitConstructorUsingShadowDecl( 1342 ConstructorUsingShadowDecl *D) { 1343 VisitUsingShadowDecl(D); 1344 Record.AddDeclRef(D->NominatedBaseClassShadowDecl); 1345 Record.AddDeclRef(D->ConstructedBaseClassShadowDecl); 1346 Record.push_back(D->IsVirtual); 1347 Code = serialization::DECL_CONSTRUCTOR_USING_SHADOW; 1348 } 1349 1350 void ASTDeclWriter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { 1351 VisitNamedDecl(D); 1352 Record.AddSourceLocation(D->getUsingLoc()); 1353 Record.AddSourceLocation(D->getNamespaceKeyLocation()); 1354 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1355 Record.AddDeclRef(D->getNominatedNamespace()); 1356 Record.AddDeclRef(dyn_cast<Decl>(D->getCommonAncestor())); 1357 Code = serialization::DECL_USING_DIRECTIVE; 1358 } 1359 1360 void ASTDeclWriter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) { 1361 VisitValueDecl(D); 1362 Record.AddSourceLocation(D->getUsingLoc()); 1363 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1364 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName()); 1365 Record.AddSourceLocation(D->getEllipsisLoc()); 1366 Code = serialization::DECL_UNRESOLVED_USING_VALUE; 1367 } 1368 1369 void ASTDeclWriter::VisitUnresolvedUsingTypenameDecl( 1370 UnresolvedUsingTypenameDecl *D) { 1371 VisitTypeDecl(D); 1372 Record.AddSourceLocation(D->getTypenameLoc()); 1373 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1374 Record.AddSourceLocation(D->getEllipsisLoc()); 1375 Code = serialization::DECL_UNRESOLVED_USING_TYPENAME; 1376 } 1377 1378 void ASTDeclWriter::VisitUnresolvedUsingIfExistsDecl( 1379 UnresolvedUsingIfExistsDecl *D) { 1380 VisitNamedDecl(D); 1381 Code = serialization::DECL_UNRESOLVED_USING_IF_EXISTS; 1382 } 1383 1384 void ASTDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) { 1385 VisitRecordDecl(D); 1386 1387 enum { 1388 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization 1389 }; 1390 if (ClassTemplateDecl *TemplD = D->getDescribedClassTemplate()) { 1391 Record.push_back(CXXRecTemplate); 1392 Record.AddDeclRef(TemplD); 1393 } else if (MemberSpecializationInfo *MSInfo 1394 = D->getMemberSpecializationInfo()) { 1395 Record.push_back(CXXRecMemberSpecialization); 1396 Record.AddDeclRef(MSInfo->getInstantiatedFrom()); 1397 Record.push_back(MSInfo->getTemplateSpecializationKind()); 1398 Record.AddSourceLocation(MSInfo->getPointOfInstantiation()); 1399 } else { 1400 Record.push_back(CXXRecNotTemplate); 1401 } 1402 1403 Record.push_back(D->isThisDeclarationADefinition()); 1404 if (D->isThisDeclarationADefinition()) 1405 Record.AddCXXDefinitionData(D); 1406 1407 // Store (what we currently believe to be) the key function to avoid 1408 // deserializing every method so we can compute it. 1409 if (D->isCompleteDefinition()) 1410 Record.AddDeclRef(Context.getCurrentKeyFunction(D)); 1411 1412 Code = serialization::DECL_CXX_RECORD; 1413 } 1414 1415 void ASTDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) { 1416 VisitFunctionDecl(D); 1417 if (D->isCanonicalDecl()) { 1418 Record.push_back(D->size_overridden_methods()); 1419 for (const CXXMethodDecl *MD : D->overridden_methods()) 1420 Record.AddDeclRef(MD); 1421 } else { 1422 // We only need to record overridden methods once for the canonical decl. 1423 Record.push_back(0); 1424 } 1425 1426 if (D->getDeclContext() == D->getLexicalDeclContext() && 1427 D->getFirstDecl() == D->getMostRecentDecl() && !D->isInvalidDecl() && 1428 !D->hasAttrs() && !D->isTopLevelDeclInObjCContainer() && 1429 D->getDeclName().getNameKind() == DeclarationName::Identifier && 1430 !D->hasExtInfo() && !D->hasInheritedPrototype() && 1431 D->hasWrittenPrototype() && 1432 D->getTemplatedKind() == FunctionDecl::TK_NonTemplate) 1433 AbbrevToUse = Writer.getDeclCXXMethodAbbrev(); 1434 1435 Code = serialization::DECL_CXX_METHOD; 1436 } 1437 1438 void ASTDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) { 1439 Record.push_back(D->getTrailingAllocKind()); 1440 addExplicitSpecifier(D->getExplicitSpecifier(), Record); 1441 if (auto Inherited = D->getInheritedConstructor()) { 1442 Record.AddDeclRef(Inherited.getShadowDecl()); 1443 Record.AddDeclRef(Inherited.getConstructor()); 1444 } 1445 1446 VisitCXXMethodDecl(D); 1447 Code = serialization::DECL_CXX_CONSTRUCTOR; 1448 } 1449 1450 void ASTDeclWriter::VisitCXXDestructorDecl(CXXDestructorDecl *D) { 1451 VisitCXXMethodDecl(D); 1452 1453 Record.AddDeclRef(D->getOperatorDelete()); 1454 if (D->getOperatorDelete()) 1455 Record.AddStmt(D->getOperatorDeleteThisArg()); 1456 1457 Code = serialization::DECL_CXX_DESTRUCTOR; 1458 } 1459 1460 void ASTDeclWriter::VisitCXXConversionDecl(CXXConversionDecl *D) { 1461 addExplicitSpecifier(D->getExplicitSpecifier(), Record); 1462 VisitCXXMethodDecl(D); 1463 Code = serialization::DECL_CXX_CONVERSION; 1464 } 1465 1466 void ASTDeclWriter::VisitImportDecl(ImportDecl *D) { 1467 VisitDecl(D); 1468 Record.push_back(Writer.getSubmoduleID(D->getImportedModule())); 1469 ArrayRef<SourceLocation> IdentifierLocs = D->getIdentifierLocs(); 1470 Record.push_back(!IdentifierLocs.empty()); 1471 if (IdentifierLocs.empty()) { 1472 Record.AddSourceLocation(D->getEndLoc()); 1473 Record.push_back(1); 1474 } else { 1475 for (unsigned I = 0, N = IdentifierLocs.size(); I != N; ++I) 1476 Record.AddSourceLocation(IdentifierLocs[I]); 1477 Record.push_back(IdentifierLocs.size()); 1478 } 1479 // Note: the number of source locations must always be the last element in 1480 // the record. 1481 Code = serialization::DECL_IMPORT; 1482 } 1483 1484 void ASTDeclWriter::VisitAccessSpecDecl(AccessSpecDecl *D) { 1485 VisitDecl(D); 1486 Record.AddSourceLocation(D->getColonLoc()); 1487 Code = serialization::DECL_ACCESS_SPEC; 1488 } 1489 1490 void ASTDeclWriter::VisitFriendDecl(FriendDecl *D) { 1491 // Record the number of friend type template parameter lists here 1492 // so as to simplify memory allocation during deserialization. 1493 Record.push_back(D->NumTPLists); 1494 VisitDecl(D); 1495 bool hasFriendDecl = D->Friend.is<NamedDecl*>(); 1496 Record.push_back(hasFriendDecl); 1497 if (hasFriendDecl) 1498 Record.AddDeclRef(D->getFriendDecl()); 1499 else 1500 Record.AddTypeSourceInfo(D->getFriendType()); 1501 for (unsigned i = 0; i < D->NumTPLists; ++i) 1502 Record.AddTemplateParameterList(D->getFriendTypeTemplateParameterList(i)); 1503 Record.AddDeclRef(D->getNextFriend()); 1504 Record.push_back(D->UnsupportedFriend); 1505 Record.AddSourceLocation(D->FriendLoc); 1506 Code = serialization::DECL_FRIEND; 1507 } 1508 1509 void ASTDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) { 1510 VisitDecl(D); 1511 Record.push_back(D->getNumTemplateParameters()); 1512 for (unsigned i = 0, e = D->getNumTemplateParameters(); i != e; ++i) 1513 Record.AddTemplateParameterList(D->getTemplateParameterList(i)); 1514 Record.push_back(D->getFriendDecl() != nullptr); 1515 if (D->getFriendDecl()) 1516 Record.AddDeclRef(D->getFriendDecl()); 1517 else 1518 Record.AddTypeSourceInfo(D->getFriendType()); 1519 Record.AddSourceLocation(D->getFriendLoc()); 1520 Code = serialization::DECL_FRIEND_TEMPLATE; 1521 } 1522 1523 void ASTDeclWriter::VisitTemplateDecl(TemplateDecl *D) { 1524 VisitNamedDecl(D); 1525 1526 Record.AddTemplateParameterList(D->getTemplateParameters()); 1527 Record.AddDeclRef(D->getTemplatedDecl()); 1528 } 1529 1530 void ASTDeclWriter::VisitConceptDecl(ConceptDecl *D) { 1531 VisitTemplateDecl(D); 1532 Record.AddStmt(D->getConstraintExpr()); 1533 Code = serialization::DECL_CONCEPT; 1534 } 1535 1536 void ASTDeclWriter::VisitImplicitConceptSpecializationDecl( 1537 ImplicitConceptSpecializationDecl *D) { 1538 Record.push_back(D->getTemplateArguments().size()); 1539 VisitDecl(D); 1540 for (const TemplateArgument &Arg : D->getTemplateArguments()) 1541 Record.AddTemplateArgument(Arg); 1542 Code = serialization::DECL_IMPLICIT_CONCEPT_SPECIALIZATION; 1543 } 1544 1545 void ASTDeclWriter::VisitRequiresExprBodyDecl(RequiresExprBodyDecl *D) { 1546 Code = serialization::DECL_REQUIRES_EXPR_BODY; 1547 } 1548 1549 void ASTDeclWriter::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) { 1550 VisitRedeclarable(D); 1551 1552 // Emit data to initialize CommonOrPrev before VisitTemplateDecl so that 1553 // getCommonPtr() can be used while this is still initializing. 1554 if (D->isFirstDecl()) { 1555 // This declaration owns the 'common' pointer, so serialize that data now. 1556 Record.AddDeclRef(D->getInstantiatedFromMemberTemplate()); 1557 if (D->getInstantiatedFromMemberTemplate()) 1558 Record.push_back(D->isMemberSpecialization()); 1559 } 1560 1561 VisitTemplateDecl(D); 1562 Record.push_back(D->getIdentifierNamespace()); 1563 } 1564 1565 void ASTDeclWriter::VisitClassTemplateDecl(ClassTemplateDecl *D) { 1566 VisitRedeclarableTemplateDecl(D); 1567 1568 if (D->isFirstDecl()) 1569 AddTemplateSpecializations(D); 1570 Code = serialization::DECL_CLASS_TEMPLATE; 1571 } 1572 1573 void ASTDeclWriter::VisitClassTemplateSpecializationDecl( 1574 ClassTemplateSpecializationDecl *D) { 1575 RegisterTemplateSpecialization(D->getSpecializedTemplate(), D); 1576 1577 VisitCXXRecordDecl(D); 1578 1579 llvm::PointerUnion<ClassTemplateDecl *, 1580 ClassTemplatePartialSpecializationDecl *> InstFrom 1581 = D->getSpecializedTemplateOrPartial(); 1582 if (Decl *InstFromD = InstFrom.dyn_cast<ClassTemplateDecl *>()) { 1583 Record.AddDeclRef(InstFromD); 1584 } else { 1585 Record.AddDeclRef(InstFrom.get<ClassTemplatePartialSpecializationDecl *>()); 1586 Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs()); 1587 } 1588 1589 Record.AddTemplateArgumentList(&D->getTemplateArgs()); 1590 Record.AddSourceLocation(D->getPointOfInstantiation()); 1591 Record.push_back(D->getSpecializationKind()); 1592 Record.push_back(D->isCanonicalDecl()); 1593 1594 if (D->isCanonicalDecl()) { 1595 // When reading, we'll add it to the folding set of the following template. 1596 Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl()); 1597 } 1598 1599 // Explicit info. 1600 Record.AddTypeSourceInfo(D->getTypeAsWritten()); 1601 if (D->getTypeAsWritten()) { 1602 Record.AddSourceLocation(D->getExternLoc()); 1603 Record.AddSourceLocation(D->getTemplateKeywordLoc()); 1604 } 1605 1606 Code = serialization::DECL_CLASS_TEMPLATE_SPECIALIZATION; 1607 } 1608 1609 void ASTDeclWriter::VisitClassTemplatePartialSpecializationDecl( 1610 ClassTemplatePartialSpecializationDecl *D) { 1611 Record.AddTemplateParameterList(D->getTemplateParameters()); 1612 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten()); 1613 1614 VisitClassTemplateSpecializationDecl(D); 1615 1616 // These are read/set from/to the first declaration. 1617 if (D->getPreviousDecl() == nullptr) { 1618 Record.AddDeclRef(D->getInstantiatedFromMember()); 1619 Record.push_back(D->isMemberSpecialization()); 1620 } 1621 1622 Code = serialization::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION; 1623 } 1624 1625 void ASTDeclWriter::VisitVarTemplateDecl(VarTemplateDecl *D) { 1626 VisitRedeclarableTemplateDecl(D); 1627 1628 if (D->isFirstDecl()) 1629 AddTemplateSpecializations(D); 1630 Code = serialization::DECL_VAR_TEMPLATE; 1631 } 1632 1633 void ASTDeclWriter::VisitVarTemplateSpecializationDecl( 1634 VarTemplateSpecializationDecl *D) { 1635 RegisterTemplateSpecialization(D->getSpecializedTemplate(), D); 1636 1637 llvm::PointerUnion<VarTemplateDecl *, VarTemplatePartialSpecializationDecl *> 1638 InstFrom = D->getSpecializedTemplateOrPartial(); 1639 if (Decl *InstFromD = InstFrom.dyn_cast<VarTemplateDecl *>()) { 1640 Record.AddDeclRef(InstFromD); 1641 } else { 1642 Record.AddDeclRef(InstFrom.get<VarTemplatePartialSpecializationDecl *>()); 1643 Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs()); 1644 } 1645 1646 // Explicit info. 1647 Record.AddTypeSourceInfo(D->getTypeAsWritten()); 1648 if (D->getTypeAsWritten()) { 1649 Record.AddSourceLocation(D->getExternLoc()); 1650 Record.AddSourceLocation(D->getTemplateKeywordLoc()); 1651 } 1652 1653 Record.AddTemplateArgumentList(&D->getTemplateArgs()); 1654 Record.AddSourceLocation(D->getPointOfInstantiation()); 1655 Record.push_back(D->getSpecializationKind()); 1656 Record.push_back(D->IsCompleteDefinition); 1657 1658 VisitVarDecl(D); 1659 1660 Record.push_back(D->isCanonicalDecl()); 1661 1662 if (D->isCanonicalDecl()) { 1663 // When reading, we'll add it to the folding set of the following template. 1664 Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl()); 1665 } 1666 1667 Code = serialization::DECL_VAR_TEMPLATE_SPECIALIZATION; 1668 } 1669 1670 void ASTDeclWriter::VisitVarTemplatePartialSpecializationDecl( 1671 VarTemplatePartialSpecializationDecl *D) { 1672 Record.AddTemplateParameterList(D->getTemplateParameters()); 1673 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten()); 1674 1675 VisitVarTemplateSpecializationDecl(D); 1676 1677 // These are read/set from/to the first declaration. 1678 if (D->getPreviousDecl() == nullptr) { 1679 Record.AddDeclRef(D->getInstantiatedFromMember()); 1680 Record.push_back(D->isMemberSpecialization()); 1681 } 1682 1683 Code = serialization::DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION; 1684 } 1685 1686 void ASTDeclWriter::VisitClassScopeFunctionSpecializationDecl( 1687 ClassScopeFunctionSpecializationDecl *D) { 1688 VisitDecl(D); 1689 Record.AddDeclRef(D->getSpecialization()); 1690 Record.push_back(D->hasExplicitTemplateArgs()); 1691 if (D->hasExplicitTemplateArgs()) 1692 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten()); 1693 Code = serialization::DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION; 1694 } 1695 1696 1697 void ASTDeclWriter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) { 1698 VisitRedeclarableTemplateDecl(D); 1699 1700 if (D->isFirstDecl()) 1701 AddTemplateSpecializations(D); 1702 Code = serialization::DECL_FUNCTION_TEMPLATE; 1703 } 1704 1705 void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) { 1706 Record.push_back(D->hasTypeConstraint()); 1707 VisitTypeDecl(D); 1708 1709 Record.push_back(D->wasDeclaredWithTypename()); 1710 1711 const TypeConstraint *TC = D->getTypeConstraint(); 1712 Record.push_back(TC != nullptr); 1713 if (TC) { 1714 Record.AddNestedNameSpecifierLoc(TC->getNestedNameSpecifierLoc()); 1715 Record.AddDeclarationNameInfo(TC->getConceptNameInfo()); 1716 Record.AddDeclRef(TC->getNamedConcept()); 1717 Record.push_back(TC->getTemplateArgsAsWritten() != nullptr); 1718 if (TC->getTemplateArgsAsWritten()) 1719 Record.AddASTTemplateArgumentListInfo(TC->getTemplateArgsAsWritten()); 1720 Record.AddStmt(TC->getImmediatelyDeclaredConstraint()); 1721 Record.push_back(D->isExpandedParameterPack()); 1722 if (D->isExpandedParameterPack()) 1723 Record.push_back(D->getNumExpansionParameters()); 1724 } 1725 1726 bool OwnsDefaultArg = D->hasDefaultArgument() && 1727 !D->defaultArgumentWasInherited(); 1728 Record.push_back(OwnsDefaultArg); 1729 if (OwnsDefaultArg) 1730 Record.AddTypeSourceInfo(D->getDefaultArgumentInfo()); 1731 1732 Code = serialization::DECL_TEMPLATE_TYPE_PARM; 1733 } 1734 1735 void ASTDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { 1736 // For an expanded parameter pack, record the number of expansion types here 1737 // so that it's easier for deserialization to allocate the right amount of 1738 // memory. 1739 Expr *TypeConstraint = D->getPlaceholderTypeConstraint(); 1740 Record.push_back(!!TypeConstraint); 1741 if (D->isExpandedParameterPack()) 1742 Record.push_back(D->getNumExpansionTypes()); 1743 1744 VisitDeclaratorDecl(D); 1745 // TemplateParmPosition. 1746 Record.push_back(D->getDepth()); 1747 Record.push_back(D->getPosition()); 1748 if (TypeConstraint) 1749 Record.AddStmt(TypeConstraint); 1750 1751 if (D->isExpandedParameterPack()) { 1752 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) { 1753 Record.AddTypeRef(D->getExpansionType(I)); 1754 Record.AddTypeSourceInfo(D->getExpansionTypeSourceInfo(I)); 1755 } 1756 1757 Code = serialization::DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK; 1758 } else { 1759 // Rest of NonTypeTemplateParmDecl. 1760 Record.push_back(D->isParameterPack()); 1761 bool OwnsDefaultArg = D->hasDefaultArgument() && 1762 !D->defaultArgumentWasInherited(); 1763 Record.push_back(OwnsDefaultArg); 1764 if (OwnsDefaultArg) 1765 Record.AddStmt(D->getDefaultArgument()); 1766 Code = serialization::DECL_NON_TYPE_TEMPLATE_PARM; 1767 } 1768 } 1769 1770 void ASTDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) { 1771 // For an expanded parameter pack, record the number of expansion types here 1772 // so that it's easier for deserialization to allocate the right amount of 1773 // memory. 1774 if (D->isExpandedParameterPack()) 1775 Record.push_back(D->getNumExpansionTemplateParameters()); 1776 1777 VisitTemplateDecl(D); 1778 // TemplateParmPosition. 1779 Record.push_back(D->getDepth()); 1780 Record.push_back(D->getPosition()); 1781 1782 if (D->isExpandedParameterPack()) { 1783 for (unsigned I = 0, N = D->getNumExpansionTemplateParameters(); 1784 I != N; ++I) 1785 Record.AddTemplateParameterList(D->getExpansionTemplateParameters(I)); 1786 Code = serialization::DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK; 1787 } else { 1788 // Rest of TemplateTemplateParmDecl. 1789 Record.push_back(D->isParameterPack()); 1790 bool OwnsDefaultArg = D->hasDefaultArgument() && 1791 !D->defaultArgumentWasInherited(); 1792 Record.push_back(OwnsDefaultArg); 1793 if (OwnsDefaultArg) 1794 Record.AddTemplateArgumentLoc(D->getDefaultArgument()); 1795 Code = serialization::DECL_TEMPLATE_TEMPLATE_PARM; 1796 } 1797 } 1798 1799 void ASTDeclWriter::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) { 1800 VisitRedeclarableTemplateDecl(D); 1801 Code = serialization::DECL_TYPE_ALIAS_TEMPLATE; 1802 } 1803 1804 void ASTDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) { 1805 VisitDecl(D); 1806 Record.AddStmt(D->getAssertExpr()); 1807 Record.push_back(D->isFailed()); 1808 Record.AddStmt(D->getMessage()); 1809 Record.AddSourceLocation(D->getRParenLoc()); 1810 Code = serialization::DECL_STATIC_ASSERT; 1811 } 1812 1813 /// Emit the DeclContext part of a declaration context decl. 1814 void ASTDeclWriter::VisitDeclContext(DeclContext *DC) { 1815 Record.AddOffset(Writer.WriteDeclContextLexicalBlock(Context, DC)); 1816 Record.AddOffset(Writer.WriteDeclContextVisibleBlock(Context, DC)); 1817 } 1818 1819 const Decl *ASTWriter::getFirstLocalDecl(const Decl *D) { 1820 assert(IsLocalDecl(D) && "expected a local declaration"); 1821 1822 const Decl *Canon = D->getCanonicalDecl(); 1823 if (IsLocalDecl(Canon)) 1824 return Canon; 1825 1826 const Decl *&CacheEntry = FirstLocalDeclCache[Canon]; 1827 if (CacheEntry) 1828 return CacheEntry; 1829 1830 for (const Decl *Redecl = D; Redecl; Redecl = Redecl->getPreviousDecl()) 1831 if (IsLocalDecl(Redecl)) 1832 D = Redecl; 1833 return CacheEntry = D; 1834 } 1835 1836 template <typename T> 1837 void ASTDeclWriter::VisitRedeclarable(Redeclarable<T> *D) { 1838 T *First = D->getFirstDecl(); 1839 T *MostRecent = First->getMostRecentDecl(); 1840 T *DAsT = static_cast<T *>(D); 1841 if (MostRecent != First) { 1842 assert(isRedeclarableDeclKind(DAsT->getKind()) && 1843 "Not considered redeclarable?"); 1844 1845 Record.AddDeclRef(First); 1846 1847 // Write out a list of local redeclarations of this declaration if it's the 1848 // first local declaration in the chain. 1849 const Decl *FirstLocal = Writer.getFirstLocalDecl(DAsT); 1850 if (DAsT == FirstLocal) { 1851 // Emit a list of all imported first declarations so that we can be sure 1852 // that all redeclarations visible to this module are before D in the 1853 // redecl chain. 1854 unsigned I = Record.size(); 1855 Record.push_back(0); 1856 if (Writer.Chain) 1857 AddFirstDeclFromEachModule(DAsT, /*IncludeLocal*/false); 1858 // This is the number of imported first declarations + 1. 1859 Record[I] = Record.size() - I; 1860 1861 // Collect the set of local redeclarations of this declaration, from 1862 // newest to oldest. 1863 ASTWriter::RecordData LocalRedecls; 1864 ASTRecordWriter LocalRedeclWriter(Record, LocalRedecls); 1865 for (const Decl *Prev = FirstLocal->getMostRecentDecl(); 1866 Prev != FirstLocal; Prev = Prev->getPreviousDecl()) 1867 if (!Prev->isFromASTFile()) 1868 LocalRedeclWriter.AddDeclRef(Prev); 1869 1870 // If we have any redecls, write them now as a separate record preceding 1871 // the declaration itself. 1872 if (LocalRedecls.empty()) 1873 Record.push_back(0); 1874 else 1875 Record.AddOffset(LocalRedeclWriter.Emit(LOCAL_REDECLARATIONS)); 1876 } else { 1877 Record.push_back(0); 1878 Record.AddDeclRef(FirstLocal); 1879 } 1880 1881 // Make sure that we serialize both the previous and the most-recent 1882 // declarations, which (transitively) ensures that all declarations in the 1883 // chain get serialized. 1884 // 1885 // FIXME: This is not correct; when we reach an imported declaration we 1886 // won't emit its previous declaration. 1887 (void)Writer.GetDeclRef(D->getPreviousDecl()); 1888 (void)Writer.GetDeclRef(MostRecent); 1889 } else { 1890 // We use the sentinel value 0 to indicate an only declaration. 1891 Record.push_back(0); 1892 } 1893 } 1894 1895 void ASTDeclWriter::VisitHLSLBufferDecl(HLSLBufferDecl *D) { 1896 VisitNamedDecl(D); 1897 VisitDeclContext(D); 1898 Record.push_back(D->isCBuffer()); 1899 Record.AddSourceLocation(D->getLocStart()); 1900 Record.AddSourceLocation(D->getLBraceLoc()); 1901 Record.AddSourceLocation(D->getRBraceLoc()); 1902 1903 Code = serialization::DECL_HLSL_BUFFER; 1904 } 1905 1906 void ASTDeclWriter::VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D) { 1907 Record.writeOMPChildren(D->Data); 1908 VisitDecl(D); 1909 Code = serialization::DECL_OMP_THREADPRIVATE; 1910 } 1911 1912 void ASTDeclWriter::VisitOMPAllocateDecl(OMPAllocateDecl *D) { 1913 Record.writeOMPChildren(D->Data); 1914 VisitDecl(D); 1915 Code = serialization::DECL_OMP_ALLOCATE; 1916 } 1917 1918 void ASTDeclWriter::VisitOMPRequiresDecl(OMPRequiresDecl *D) { 1919 Record.writeOMPChildren(D->Data); 1920 VisitDecl(D); 1921 Code = serialization::DECL_OMP_REQUIRES; 1922 } 1923 1924 void ASTDeclWriter::VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D) { 1925 VisitValueDecl(D); 1926 Record.AddSourceLocation(D->getBeginLoc()); 1927 Record.AddStmt(D->getCombinerIn()); 1928 Record.AddStmt(D->getCombinerOut()); 1929 Record.AddStmt(D->getCombiner()); 1930 Record.AddStmt(D->getInitOrig()); 1931 Record.AddStmt(D->getInitPriv()); 1932 Record.AddStmt(D->getInitializer()); 1933 Record.push_back(D->getInitializerKind()); 1934 Record.AddDeclRef(D->getPrevDeclInScope()); 1935 Code = serialization::DECL_OMP_DECLARE_REDUCTION; 1936 } 1937 1938 void ASTDeclWriter::VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D) { 1939 Record.writeOMPChildren(D->Data); 1940 VisitValueDecl(D); 1941 Record.AddDeclarationName(D->getVarName()); 1942 Record.AddDeclRef(D->getPrevDeclInScope()); 1943 Code = serialization::DECL_OMP_DECLARE_MAPPER; 1944 } 1945 1946 void ASTDeclWriter::VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D) { 1947 VisitVarDecl(D); 1948 Code = serialization::DECL_OMP_CAPTUREDEXPR; 1949 } 1950 1951 //===----------------------------------------------------------------------===// 1952 // ASTWriter Implementation 1953 //===----------------------------------------------------------------------===// 1954 1955 void ASTWriter::WriteDeclAbbrevs() { 1956 using namespace llvm; 1957 1958 std::shared_ptr<BitCodeAbbrev> Abv; 1959 1960 // Abbreviation for DECL_FIELD 1961 Abv = std::make_shared<BitCodeAbbrev>(); 1962 Abv->Add(BitCodeAbbrevOp(serialization::DECL_FIELD)); 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(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier 1973 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // ModuleOwnershipKind 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 // FieldDecl 1986 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 1987 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle 1988 // Type Source Info 1989 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1990 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1991 DeclFieldAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1992 1993 // Abbreviation for DECL_OBJC_IVAR 1994 Abv = std::make_shared<BitCodeAbbrev>(); 1995 Abv->Add(BitCodeAbbrevOp(serialization::DECL_OBJC_IVAR)); 1996 // Decl 1997 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1998 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1999 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 2000 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 2001 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 2002 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 2003 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 2004 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 2005 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier 2006 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // ModuleOwnershipKind 2007 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2008 // NamedDecl 2009 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 2010 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 2011 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2012 // ValueDecl 2013 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2014 // DeclaratorDecl 2015 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 2016 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 2017 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType 2018 // FieldDecl 2019 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 2020 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle 2021 // ObjC Ivar 2022 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getAccessControl 2023 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getSynthesize 2024 // Type Source Info 2025 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 2026 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 2027 DeclObjCIvarAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2028 2029 // Abbreviation for DECL_ENUM 2030 Abv = std::make_shared<BitCodeAbbrev>(); 2031 Abv->Add(BitCodeAbbrevOp(serialization::DECL_ENUM)); 2032 // Redeclarable 2033 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 2034 // Decl 2035 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 2036 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 2037 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 2038 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 2039 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 2040 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 2041 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 2042 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 2043 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 2044 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // ModuleOwnershipKind 2045 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2046 // NamedDecl 2047 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 2048 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 2049 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2050 // TypeDecl 2051 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 2052 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 2053 // TagDecl 2054 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 2055 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind 2056 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition 2057 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator 2058 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding 2059 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired 2060 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 2061 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 2062 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind 2063 // EnumDecl 2064 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // AddTypeRef 2065 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IntegerType 2066 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getPromotionType 2067 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumPositiveBits 2068 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumNegativeBits 2069 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScoped 2070 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScopedUsingClassTag 2071 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isFixed 2072 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));// ODRHash 2073 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InstantiatedMembEnum 2074 // DC 2075 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 2076 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 2077 DeclEnumAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2078 2079 // Abbreviation for DECL_RECORD 2080 Abv = std::make_shared<BitCodeAbbrev>(); 2081 Abv->Add(BitCodeAbbrevOp(serialization::DECL_RECORD)); 2082 // Redeclarable 2083 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 2084 // Decl 2085 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 2086 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 2087 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 2088 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 2089 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 2090 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 2091 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 2092 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 2093 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 2094 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // ModuleOwnershipKind 2095 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2096 // NamedDecl 2097 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 2098 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 2099 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2100 // TypeDecl 2101 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 2102 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 2103 // TagDecl 2104 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 2105 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind 2106 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition 2107 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator 2108 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding 2109 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired 2110 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 2111 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 2112 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind 2113 // RecordDecl 2114 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // FlexibleArrayMember 2115 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // AnonymousStructUnion 2116 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasObjectMember 2117 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasVolatileMember 2118 2119 // isNonTrivialToPrimitiveDefaultInitialize 2120 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); 2121 // isNonTrivialToPrimitiveCopy 2122 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); 2123 // isNonTrivialToPrimitiveDestroy 2124 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); 2125 // hasNonTrivialToPrimitiveDefaultInitializeCUnion 2126 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); 2127 // hasNonTrivialToPrimitiveDestructCUnion 2128 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); 2129 // hasNonTrivialToPrimitiveCopyCUnion 2130 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); 2131 // isParamDestroyedInCallee 2132 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); 2133 // getArgPassingRestrictions 2134 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); 2135 // ODRHash 2136 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 26)); 2137 2138 // DC 2139 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 2140 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 2141 DeclRecordAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2142 2143 // Abbreviation for DECL_PARM_VAR 2144 Abv = std::make_shared<BitCodeAbbrev>(); 2145 Abv->Add(BitCodeAbbrevOp(serialization::DECL_PARM_VAR)); 2146 // Redeclarable 2147 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 2148 // Decl 2149 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 2150 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 2151 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 2152 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 2153 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 2154 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 2155 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 2156 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 2157 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 2158 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // ModuleOwnershipKind 2159 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2160 // NamedDecl 2161 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 2162 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 2163 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2164 // ValueDecl 2165 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2166 // DeclaratorDecl 2167 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 2168 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 2169 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType 2170 // VarDecl 2171 Abv->Add(BitCodeAbbrevOp(0)); // SClass 2172 Abv->Add(BitCodeAbbrevOp(0)); // TSCSpec 2173 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle 2174 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isARCPseudoStrong 2175 Abv->Add(BitCodeAbbrevOp(0)); // Linkage 2176 Abv->Add(BitCodeAbbrevOp(0)); // HasInit 2177 Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo 2178 // ParmVarDecl 2179 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsObjCMethodParameter 2180 Abv->Add(BitCodeAbbrevOp(0)); // ScopeDepth 2181 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ScopeIndex 2182 Abv->Add(BitCodeAbbrevOp(0)); // ObjCDeclQualifier 2183 Abv->Add(BitCodeAbbrevOp(0)); // KNRPromoted 2184 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedDefaultArg 2185 Abv->Add(BitCodeAbbrevOp(0)); // HasUninstantiatedDefaultArg 2186 // Type Source Info 2187 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 2188 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 2189 DeclParmVarAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2190 2191 // Abbreviation for DECL_TYPEDEF 2192 Abv = std::make_shared<BitCodeAbbrev>(); 2193 Abv->Add(BitCodeAbbrevOp(serialization::DECL_TYPEDEF)); 2194 // Redeclarable 2195 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 2196 // Decl 2197 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 2198 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 2199 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 2200 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 2201 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 2202 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isUsed 2203 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isReferenced 2204 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 2205 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // C++ AccessSpecifier 2206 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // ModuleOwnershipKind 2207 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2208 // NamedDecl 2209 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 2210 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 2211 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2212 // TypeDecl 2213 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 2214 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 2215 // TypedefDecl 2216 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 2217 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 2218 DeclTypedefAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2219 2220 // Abbreviation for DECL_VAR 2221 Abv = std::make_shared<BitCodeAbbrev>(); 2222 Abv->Add(BitCodeAbbrevOp(serialization::DECL_VAR)); 2223 // Redeclarable 2224 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 2225 // Decl 2226 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 2227 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 2228 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 2229 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 2230 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 2231 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 2232 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 2233 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 2234 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 2235 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // ModuleOwnershipKind 2236 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2237 // NamedDecl 2238 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 2239 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 2240 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2241 // ValueDecl 2242 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2243 // DeclaratorDecl 2244 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 2245 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 2246 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType 2247 // VarDecl 2248 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // SClass 2249 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // TSCSpec 2250 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // InitStyle 2251 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isARCPseudoStrong 2252 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsThisDeclarationADemotedDefinition 2253 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isExceptionVariable 2254 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isNRVOVariable 2255 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCXXForRangeDecl 2256 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isObjCForDecl 2257 Abv->Add(BitCodeAbbrevOp(0)); // isInline 2258 Abv->Add(BitCodeAbbrevOp(0)); // isInlineSpecified 2259 Abv->Add(BitCodeAbbrevOp(0)); // isConstexpr 2260 Abv->Add(BitCodeAbbrevOp(0)); // isInitCapture 2261 Abv->Add(BitCodeAbbrevOp(0)); // isPrevDeclInSameScope 2262 Abv->Add(BitCodeAbbrevOp(0)); // ImplicitParamKind 2263 Abv->Add(BitCodeAbbrevOp(0)); // EscapingByref 2264 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage 2265 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // HasConstant* 2266 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // VarKind (local enum) 2267 // Type Source Info 2268 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 2269 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 2270 DeclVarAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2271 2272 // Abbreviation for DECL_CXX_METHOD 2273 Abv = std::make_shared<BitCodeAbbrev>(); 2274 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CXX_METHOD)); 2275 // RedeclarableDecl 2276 Abv->Add(BitCodeAbbrevOp(0)); // CanonicalDecl 2277 // FIXME: Implement abbreviation for other template kinds. 2278 Abv->Add(BitCodeAbbrevOp(FunctionDecl::TK_NonTemplate)); // TemplateKind 2279 // Decl 2280 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 2281 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 2282 Abv->Add(BitCodeAbbrevOp(0)); // Invalid 2283 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 2284 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Implicit 2285 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Used 2286 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Referenced 2287 Abv->Add(BitCodeAbbrevOp(0)); // InObjCContainer 2288 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Access 2289 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // ModuleOwnershipKind 2290 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2291 // NamedDecl 2292 Abv->Add(BitCodeAbbrevOp(DeclarationName::Identifier)); // NameKind 2293 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Identifier 2294 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2295 // ValueDecl 2296 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2297 // DeclaratorDecl 2298 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerLocStart 2299 Abv->Add(BitCodeAbbrevOp(0)); // HasExtInfo 2300 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType 2301 // FunctionDecl 2302 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 11)); // IDNS 2303 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // StorageClass 2304 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Inline 2305 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InlineSpecified 2306 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // VirtualAsWritten 2307 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Pure 2308 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedProto 2309 Abv->Add(BitCodeAbbrevOp(1)); // HasWrittenProto 2310 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Deleted 2311 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Trivial 2312 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // TrivialForCall 2313 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Defaulted 2314 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ExplicitlyDefaulted 2315 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsIneligibleOrNotSelected 2316 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ImplicitReturnZero 2317 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Constexpr 2318 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // UsesSEHTry 2319 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // SkippedBody 2320 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // MultiVersion 2321 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // LateParsed 2322 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // FriendConstraintRefersToEnclosingTemplate 2323 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage 2324 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LocEnd 2325 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Default 2326 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // ODRHash 2327 // This Array slurps the rest of the record. Fortunately we want to encode 2328 // (nearly) all the remaining (variable number of) fields in the same way. 2329 // 2330 // This is: 2331 // NumParams and Params[] from FunctionDecl, and 2332 // NumOverriddenMethods, OverriddenMethods[] from CXXMethodDecl. 2333 // 2334 // Add an AbbrevOp for 'size then elements' and use it here. 2335 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 2336 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 2337 DeclCXXMethodAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2338 2339 unsigned ExprDependenceBits = llvm::BitWidth<ExprDependence>; 2340 // Abbreviation for EXPR_DECL_REF 2341 Abv = std::make_shared<BitCodeAbbrev>(); 2342 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_DECL_REF)); 2343 //Stmt 2344 // Expr 2345 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2346 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, ExprDependenceBits)); 2347 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 2348 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 2349 //DeclRefExpr 2350 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HasQualifier 2351 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //GetDeclFound 2352 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ExplicitTemplateArgs 2353 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HadMultipleCandidates 2354 Abv->Add(BitCodeAbbrevOp(0)); // RefersToEnclosingVariableOrCapture 2355 Abv->Add(BitCodeAbbrevOp(0)); // NonOdrUseReason 2356 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclRef 2357 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 2358 DeclRefExprAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2359 2360 // Abbreviation for EXPR_INTEGER_LITERAL 2361 Abv = std::make_shared<BitCodeAbbrev>(); 2362 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_INTEGER_LITERAL)); 2363 //Stmt 2364 // Expr 2365 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2366 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, ExprDependenceBits)); 2367 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 2368 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 2369 //Integer Literal 2370 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 2371 Abv->Add(BitCodeAbbrevOp(32)); // Bit Width 2372 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Value 2373 IntegerLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2374 2375 // Abbreviation for EXPR_CHARACTER_LITERAL 2376 Abv = std::make_shared<BitCodeAbbrev>(); 2377 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CHARACTER_LITERAL)); 2378 //Stmt 2379 // Expr 2380 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2381 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, ExprDependenceBits)); 2382 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 2383 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 2384 //Character Literal 2385 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getValue 2386 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 2387 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // getKind 2388 CharacterLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2389 2390 // Abbreviation for EXPR_IMPLICIT_CAST 2391 Abv = std::make_shared<BitCodeAbbrev>(); 2392 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_IMPLICIT_CAST)); 2393 // Stmt 2394 // Expr 2395 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2396 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, ExprDependenceBits)); 2397 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 2398 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 2399 // CastExpr 2400 Abv->Add(BitCodeAbbrevOp(0)); // PathSize 2401 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // HasFPFeatures 2402 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 6)); // CastKind 2403 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // PartOfExplicitCast 2404 // ImplicitCastExpr 2405 ExprImplicitCastAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2406 2407 Abv = std::make_shared<BitCodeAbbrev>(); 2408 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_LEXICAL)); 2409 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2410 DeclContextLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2411 2412 Abv = std::make_shared<BitCodeAbbrev>(); 2413 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_VISIBLE)); 2414 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2415 DeclContextVisibleLookupAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2416 } 2417 2418 /// isRequiredDecl - Check if this is a "required" Decl, which must be seen by 2419 /// consumers of the AST. 2420 /// 2421 /// Such decls will always be deserialized from the AST file, so we would like 2422 /// this to be as restrictive as possible. Currently the predicate is driven by 2423 /// code generation requirements, if other clients have a different notion of 2424 /// what is "required" then we may have to consider an alternate scheme where 2425 /// clients can iterate over the top-level decls and get information on them, 2426 /// without necessary deserializing them. We could explicitly require such 2427 /// clients to use a separate API call to "realize" the decl. This should be 2428 /// relatively painless since they would presumably only do it for top-level 2429 /// decls. 2430 static bool isRequiredDecl(const Decl *D, ASTContext &Context, 2431 bool WritingModule) { 2432 // An ObjCMethodDecl is never considered as "required" because its 2433 // implementation container always is. 2434 2435 // File scoped assembly or obj-c or OMP declare target implementation must be 2436 // seen. 2437 if (isa<FileScopeAsmDecl, TopLevelStmtDecl, ObjCImplDecl>(D)) 2438 return true; 2439 2440 if (WritingModule && isPartOfPerModuleInitializer(D)) { 2441 // These declarations are part of the module initializer, and are emitted 2442 // if and when the module is imported, rather than being emitted eagerly. 2443 return false; 2444 } 2445 2446 return Context.DeclMustBeEmitted(D); 2447 } 2448 2449 void ASTWriter::WriteDecl(ASTContext &Context, Decl *D) { 2450 PrettyDeclStackTraceEntry CrashInfo(Context, D, SourceLocation(), 2451 "serializing"); 2452 2453 // Determine the ID for this declaration. 2454 serialization::DeclID ID; 2455 assert(!D->isFromASTFile() && "should not be emitting imported decl"); 2456 serialization::DeclID &IDR = DeclIDs[D]; 2457 if (IDR == 0) 2458 IDR = NextDeclID++; 2459 2460 ID = IDR; 2461 2462 assert(ID >= FirstDeclID && "invalid decl ID"); 2463 2464 RecordData Record; 2465 ASTDeclWriter W(*this, Context, Record); 2466 2467 // Build a record for this declaration 2468 W.Visit(D); 2469 2470 // Emit this declaration to the bitstream. 2471 uint64_t Offset = W.Emit(D); 2472 2473 // Record the offset for this declaration 2474 SourceLocation Loc = D->getLocation(); 2475 unsigned Index = ID - FirstDeclID; 2476 if (DeclOffsets.size() == Index) 2477 DeclOffsets.emplace_back(getAdjustedLocation(Loc), Offset, 2478 DeclTypesBlockStartOffset); 2479 else if (DeclOffsets.size() < Index) { 2480 // FIXME: Can/should this happen? 2481 DeclOffsets.resize(Index+1); 2482 DeclOffsets[Index].setLocation(getAdjustedLocation(Loc)); 2483 DeclOffsets[Index].setBitOffset(Offset, DeclTypesBlockStartOffset); 2484 } else { 2485 llvm_unreachable("declarations should be emitted in ID order"); 2486 } 2487 2488 SourceManager &SM = Context.getSourceManager(); 2489 if (Loc.isValid() && SM.isLocalSourceLocation(Loc)) 2490 associateDeclWithFile(D, ID); 2491 2492 // Note declarations that should be deserialized eagerly so that we can add 2493 // them to a record in the AST file later. 2494 if (isRequiredDecl(D, Context, WritingModule)) 2495 EagerlyDeserializedDecls.push_back(ID); 2496 } 2497 2498 void ASTRecordWriter::AddFunctionDefinition(const FunctionDecl *FD) { 2499 // Switch case IDs are per function body. 2500 Writer->ClearSwitchCaseIDs(); 2501 2502 assert(FD->doesThisDeclarationHaveABody()); 2503 bool ModulesCodegen = false; 2504 if (!FD->isDependentContext()) { 2505 std::optional<GVALinkage> Linkage; 2506 if (Writer->WritingModule && 2507 Writer->WritingModule->isInterfaceOrPartition()) { 2508 // When building a C++20 module interface unit or a partition unit, a 2509 // strong definition in the module interface is provided by the 2510 // compilation of that unit, not by its users. (Inline functions are still 2511 // emitted in module users.) 2512 Linkage = Writer->Context->GetGVALinkageForFunction(FD); 2513 ModulesCodegen = *Linkage == GVA_StrongExternal; 2514 } 2515 if (Writer->Context->getLangOpts().ModulesCodegen || 2516 (FD->hasAttr<DLLExportAttr>() && 2517 Writer->Context->getLangOpts().BuildingPCHWithObjectFile)) { 2518 2519 // Under -fmodules-codegen, codegen is performed for all non-internal, 2520 // non-always_inline functions, unless they are available elsewhere. 2521 if (!FD->hasAttr<AlwaysInlineAttr>()) { 2522 if (!Linkage) 2523 Linkage = Writer->Context->GetGVALinkageForFunction(FD); 2524 ModulesCodegen = 2525 *Linkage != GVA_Internal && *Linkage != GVA_AvailableExternally; 2526 } 2527 } 2528 } 2529 Record->push_back(ModulesCodegen); 2530 if (ModulesCodegen) 2531 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(FD)); 2532 if (auto *CD = dyn_cast<CXXConstructorDecl>(FD)) { 2533 Record->push_back(CD->getNumCtorInitializers()); 2534 if (CD->getNumCtorInitializers()) 2535 AddCXXCtorInitializers(llvm::ArrayRef(CD->init_begin(), CD->init_end())); 2536 } 2537 AddStmt(FD->getBody()); 2538 } 2539