1 //===--- ASTWriterDecl.cpp - Declaration Serialization --------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file implements serialization for Declarations. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "ASTCommon.h" 15 #include "clang/AST/DeclCXX.h" 16 #include "clang/AST/DeclContextInternals.h" 17 #include "clang/AST/DeclTemplate.h" 18 #include "clang/AST/DeclVisitor.h" 19 #include "clang/AST/Expr.h" 20 #include "clang/Basic/SourceManager.h" 21 #include "clang/Serialization/ASTReader.h" 22 #include "clang/Serialization/ASTWriter.h" 23 #include "llvm/Bitcode/BitstreamWriter.h" 24 #include "llvm/Support/ErrorHandling.h" 25 using namespace clang; 26 using namespace serialization; 27 28 //===----------------------------------------------------------------------===// 29 // Declaration serialization 30 //===----------------------------------------------------------------------===// 31 32 namespace clang { 33 class ASTDeclWriter : public DeclVisitor<ASTDeclWriter, void> { 34 ASTWriter &Writer; 35 ASTContext &Context; 36 ASTRecordWriter Record; 37 38 serialization::DeclCode Code; 39 unsigned AbbrevToUse; 40 41 public: 42 ASTDeclWriter(ASTWriter &Writer, ASTContext &Context, 43 ASTWriter::RecordDataImpl &Record) 44 : Writer(Writer), Context(Context), Record(Writer, Record), 45 Code((serialization::DeclCode)0), AbbrevToUse(0) {} 46 47 uint64_t Emit(Decl *D) { 48 if (!Code) 49 llvm::report_fatal_error(StringRef("unexpected declaration kind '") + 50 D->getDeclKindName() + "'"); 51 return Record.Emit(Code, AbbrevToUse); 52 } 53 54 void Visit(Decl *D); 55 56 void VisitDecl(Decl *D); 57 void VisitPragmaCommentDecl(PragmaCommentDecl *D); 58 void VisitPragmaDetectMismatchDecl(PragmaDetectMismatchDecl *D); 59 void VisitTranslationUnitDecl(TranslationUnitDecl *D); 60 void VisitNamedDecl(NamedDecl *D); 61 void VisitLabelDecl(LabelDecl *LD); 62 void VisitNamespaceDecl(NamespaceDecl *D); 63 void VisitUsingDirectiveDecl(UsingDirectiveDecl *D); 64 void VisitNamespaceAliasDecl(NamespaceAliasDecl *D); 65 void VisitTypeDecl(TypeDecl *D); 66 void VisitTypedefNameDecl(TypedefNameDecl *D); 67 void VisitTypedefDecl(TypedefDecl *D); 68 void VisitTypeAliasDecl(TypeAliasDecl *D); 69 void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D); 70 void VisitTagDecl(TagDecl *D); 71 void VisitEnumDecl(EnumDecl *D); 72 void VisitRecordDecl(RecordDecl *D); 73 void VisitCXXRecordDecl(CXXRecordDecl *D); 74 void VisitClassTemplateSpecializationDecl( 75 ClassTemplateSpecializationDecl *D); 76 void VisitClassTemplatePartialSpecializationDecl( 77 ClassTemplatePartialSpecializationDecl *D); 78 void VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl *D); 79 void VisitVarTemplatePartialSpecializationDecl( 80 VarTemplatePartialSpecializationDecl *D); 81 void VisitClassScopeFunctionSpecializationDecl( 82 ClassScopeFunctionSpecializationDecl *D); 83 void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D); 84 void VisitValueDecl(ValueDecl *D); 85 void VisitEnumConstantDecl(EnumConstantDecl *D); 86 void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D); 87 void VisitDeclaratorDecl(DeclaratorDecl *D); 88 void VisitFunctionDecl(FunctionDecl *D); 89 void VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D); 90 void VisitCXXMethodDecl(CXXMethodDecl *D); 91 void VisitCXXConstructorDecl(CXXConstructorDecl *D); 92 void VisitCXXDestructorDecl(CXXDestructorDecl *D); 93 void VisitCXXConversionDecl(CXXConversionDecl *D); 94 void VisitFieldDecl(FieldDecl *D); 95 void VisitMSPropertyDecl(MSPropertyDecl *D); 96 void VisitIndirectFieldDecl(IndirectFieldDecl *D); 97 void VisitVarDecl(VarDecl *D); 98 void VisitImplicitParamDecl(ImplicitParamDecl *D); 99 void VisitParmVarDecl(ParmVarDecl *D); 100 void VisitDecompositionDecl(DecompositionDecl *D); 101 void VisitBindingDecl(BindingDecl *D); 102 void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D); 103 void VisitTemplateDecl(TemplateDecl *D); 104 void VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D); 105 void VisitClassTemplateDecl(ClassTemplateDecl *D); 106 void VisitVarTemplateDecl(VarTemplateDecl *D); 107 void VisitFunctionTemplateDecl(FunctionTemplateDecl *D); 108 void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D); 109 void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D); 110 void VisitUsingDecl(UsingDecl *D); 111 void VisitUsingPackDecl(UsingPackDecl *D); 112 void VisitUsingShadowDecl(UsingShadowDecl *D); 113 void VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl *D); 114 void VisitLinkageSpecDecl(LinkageSpecDecl *D); 115 void VisitExportDecl(ExportDecl *D); 116 void VisitFileScopeAsmDecl(FileScopeAsmDecl *D); 117 void VisitImportDecl(ImportDecl *D); 118 void VisitAccessSpecDecl(AccessSpecDecl *D); 119 void VisitFriendDecl(FriendDecl *D); 120 void VisitFriendTemplateDecl(FriendTemplateDecl *D); 121 void VisitStaticAssertDecl(StaticAssertDecl *D); 122 void VisitBlockDecl(BlockDecl *D); 123 void VisitCapturedDecl(CapturedDecl *D); 124 void VisitEmptyDecl(EmptyDecl *D); 125 126 void VisitDeclContext(DeclContext *DC); 127 template <typename T> void VisitRedeclarable(Redeclarable<T> *D); 128 129 130 // FIXME: Put in the same order is DeclNodes.td? 131 void VisitObjCMethodDecl(ObjCMethodDecl *D); 132 void VisitObjCTypeParamDecl(ObjCTypeParamDecl *D); 133 void VisitObjCContainerDecl(ObjCContainerDecl *D); 134 void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D); 135 void VisitObjCIvarDecl(ObjCIvarDecl *D); 136 void VisitObjCProtocolDecl(ObjCProtocolDecl *D); 137 void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D); 138 void VisitObjCCategoryDecl(ObjCCategoryDecl *D); 139 void VisitObjCImplDecl(ObjCImplDecl *D); 140 void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D); 141 void VisitObjCImplementationDecl(ObjCImplementationDecl *D); 142 void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D); 143 void VisitObjCPropertyDecl(ObjCPropertyDecl *D); 144 void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D); 145 void VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D); 146 void VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D); 147 void VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D); 148 149 /// Add an Objective-C type parameter list to the given record. 150 void AddObjCTypeParamList(ObjCTypeParamList *typeParams) { 151 // Empty type parameter list. 152 if (!typeParams) { 153 Record.push_back(0); 154 return; 155 } 156 157 Record.push_back(typeParams->size()); 158 for (auto typeParam : *typeParams) { 159 Record.AddDeclRef(typeParam); 160 } 161 Record.AddSourceLocation(typeParams->getLAngleLoc()); 162 Record.AddSourceLocation(typeParams->getRAngleLoc()); 163 } 164 165 /// Add to the record the first declaration from each module file that 166 /// provides a declaration of D. The intent is to provide a sufficient 167 /// set such that reloading this set will load all current redeclarations. 168 void AddFirstDeclFromEachModule(const Decl *D, bool IncludeLocal) { 169 llvm::MapVector<ModuleFile*, const Decl*> Firsts; 170 // FIXME: We can skip entries that we know are implied by others. 171 for (const Decl *R = D->getMostRecentDecl(); R; R = R->getPreviousDecl()) { 172 if (R->isFromASTFile()) 173 Firsts[Writer.Chain->getOwningModuleFile(R)] = R; 174 else if (IncludeLocal) 175 Firsts[nullptr] = R; 176 } 177 for (const auto &F : Firsts) 178 Record.AddDeclRef(F.second); 179 } 180 181 /// Get the specialization decl from an entry in the specialization list. 182 template <typename EntryType> 183 typename RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::DeclType * 184 getSpecializationDecl(EntryType &T) { 185 return RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::getDecl(&T); 186 } 187 188 /// Get the list of partial specializations from a template's common ptr. 189 template<typename T> 190 decltype(T::PartialSpecializations) &getPartialSpecializations(T *Common) { 191 return Common->PartialSpecializations; 192 } 193 ArrayRef<Decl> getPartialSpecializations(FunctionTemplateDecl::Common *) { 194 return None; 195 } 196 197 template<typename DeclTy> 198 void AddTemplateSpecializations(DeclTy *D) { 199 auto *Common = D->getCommonPtr(); 200 201 // If we have any lazy specializations, and the external AST source is 202 // our chained AST reader, we can just write out the DeclIDs. Otherwise, 203 // we need to resolve them to actual declarations. 204 if (Writer.Chain != Writer.Context->getExternalSource() && 205 Common->LazySpecializations) { 206 D->LoadLazySpecializations(); 207 assert(!Common->LazySpecializations); 208 } 209 210 ArrayRef<DeclID> LazySpecializations; 211 if (auto *LS = Common->LazySpecializations) 212 LazySpecializations = llvm::makeArrayRef(LS + 1, LS[0]); 213 214 // Add a slot to the record for the number of specializations. 215 unsigned I = Record.size(); 216 Record.push_back(0); 217 218 // AddFirstDeclFromEachModule might trigger deserialization, invalidating 219 // *Specializations iterators. 220 llvm::SmallVector<const Decl*, 16> Specs; 221 for (auto &Entry : Common->Specializations) 222 Specs.push_back(getSpecializationDecl(Entry)); 223 for (auto &Entry : getPartialSpecializations(Common)) 224 Specs.push_back(getSpecializationDecl(Entry)); 225 226 for (auto *D : Specs) { 227 assert(D->isCanonicalDecl() && "non-canonical decl in set"); 228 AddFirstDeclFromEachModule(D, /*IncludeLocal*/true); 229 } 230 Record.append(LazySpecializations.begin(), LazySpecializations.end()); 231 232 // Update the size entry we added earlier. 233 Record[I] = Record.size() - I - 1; 234 } 235 236 /// Ensure that this template specialization is associated with the specified 237 /// template on reload. 238 void RegisterTemplateSpecialization(const Decl *Template, 239 const Decl *Specialization) { 240 Template = Template->getCanonicalDecl(); 241 242 // If the canonical template is local, we'll write out this specialization 243 // when we emit it. 244 // FIXME: We can do the same thing if there is any local declaration of 245 // the template, to avoid emitting an update record. 246 if (!Template->isFromASTFile()) 247 return; 248 249 // We only need to associate the first local declaration of the 250 // specialization. The other declarations will get pulled in by it. 251 if (Writer.getFirstLocalDecl(Specialization) != Specialization) 252 return; 253 254 Writer.DeclUpdates[Template].push_back(ASTWriter::DeclUpdate( 255 UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION, Specialization)); 256 } 257 }; 258 } 259 260 void ASTDeclWriter::Visit(Decl *D) { 261 DeclVisitor<ASTDeclWriter>::Visit(D); 262 263 // Source locations require array (variable-length) abbreviations. The 264 // abbreviation infrastructure requires that arrays are encoded last, so 265 // we handle it here in the case of those classes derived from DeclaratorDecl 266 if (DeclaratorDecl *DD = dyn_cast<DeclaratorDecl>(D)) { 267 Record.AddTypeSourceInfo(DD->getTypeSourceInfo()); 268 } 269 270 // Handle FunctionDecl's body here and write it after all other Stmts/Exprs 271 // have been written. We want it last because we will not read it back when 272 // retrieving it from the AST, we'll just lazily set the offset. 273 if (FunctionDecl *FD = dyn_cast<FunctionDecl>(D)) { 274 Record.push_back(FD->doesThisDeclarationHaveABody()); 275 if (FD->doesThisDeclarationHaveABody()) 276 Record.AddFunctionDefinition(FD); 277 } 278 279 // If this declaration is also a DeclContext, write blocks for the 280 // declarations that lexically stored inside its context and those 281 // declarations that are visible from its context. 282 if (DeclContext *DC = dyn_cast<DeclContext>(D)) 283 VisitDeclContext(DC); 284 } 285 286 void ASTDeclWriter::VisitDecl(Decl *D) { 287 Record.AddDeclRef(cast_or_null<Decl>(D->getDeclContext())); 288 if (D->getDeclContext() != D->getLexicalDeclContext()) 289 Record.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext())); 290 else 291 Record.push_back(0); 292 Record.push_back(D->isInvalidDecl()); 293 Record.push_back(D->hasAttrs()); 294 if (D->hasAttrs()) 295 Record.AddAttributes(D->getAttrs()); 296 Record.push_back(D->isImplicit()); 297 Record.push_back(D->isUsed(false)); 298 Record.push_back(D->isReferenced()); 299 Record.push_back(D->isTopLevelDeclInObjCContainer()); 300 Record.push_back(D->getAccess()); 301 Record.push_back(D->isModulePrivate()); 302 Record.push_back(Writer.getSubmoduleID(D->getOwningModule())); 303 304 // If this declaration injected a name into a context different from its 305 // lexical context, and that context is an imported namespace, we need to 306 // update its visible declarations to include this name. 307 // 308 // This happens when we instantiate a class with a friend declaration or a 309 // function with a local extern declaration, for instance. 310 // 311 // FIXME: Can we handle this in AddedVisibleDecl instead? 312 if (D->isOutOfLine()) { 313 auto *DC = D->getDeclContext(); 314 while (auto *NS = dyn_cast<NamespaceDecl>(DC->getRedeclContext())) { 315 if (!NS->isFromASTFile()) 316 break; 317 Writer.UpdatedDeclContexts.insert(NS->getPrimaryContext()); 318 if (!NS->isInlineNamespace()) 319 break; 320 DC = NS->getParent(); 321 } 322 } 323 } 324 325 void ASTDeclWriter::VisitPragmaCommentDecl(PragmaCommentDecl *D) { 326 StringRef Arg = D->getArg(); 327 Record.push_back(Arg.size()); 328 VisitDecl(D); 329 Record.AddSourceLocation(D->getLocStart()); 330 Record.push_back(D->getCommentKind()); 331 Record.AddString(Arg); 332 Code = serialization::DECL_PRAGMA_COMMENT; 333 } 334 335 void ASTDeclWriter::VisitPragmaDetectMismatchDecl( 336 PragmaDetectMismatchDecl *D) { 337 StringRef Name = D->getName(); 338 StringRef Value = D->getValue(); 339 Record.push_back(Name.size() + 1 + Value.size()); 340 VisitDecl(D); 341 Record.AddSourceLocation(D->getLocStart()); 342 Record.AddString(Name); 343 Record.AddString(Value); 344 Code = serialization::DECL_PRAGMA_DETECT_MISMATCH; 345 } 346 347 void ASTDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) { 348 llvm_unreachable("Translation units aren't directly serialized"); 349 } 350 351 void ASTDeclWriter::VisitNamedDecl(NamedDecl *D) { 352 VisitDecl(D); 353 Record.AddDeclarationName(D->getDeclName()); 354 Record.push_back(needsAnonymousDeclarationNumber(D) 355 ? Writer.getAnonymousDeclarationNumber(D) 356 : 0); 357 } 358 359 void ASTDeclWriter::VisitTypeDecl(TypeDecl *D) { 360 VisitNamedDecl(D); 361 Record.AddSourceLocation(D->getLocStart()); 362 Record.AddTypeRef(QualType(D->getTypeForDecl(), 0)); 363 } 364 365 void ASTDeclWriter::VisitTypedefNameDecl(TypedefNameDecl *D) { 366 VisitRedeclarable(D); 367 VisitTypeDecl(D); 368 Record.AddTypeSourceInfo(D->getTypeSourceInfo()); 369 Record.push_back(D->isModed()); 370 if (D->isModed()) 371 Record.AddTypeRef(D->getUnderlyingType()); 372 Record.AddDeclRef(D->getAnonDeclWithTypedefName(false)); 373 } 374 375 void ASTDeclWriter::VisitTypedefDecl(TypedefDecl *D) { 376 VisitTypedefNameDecl(D); 377 if (D->getDeclContext() == D->getLexicalDeclContext() && 378 !D->hasAttrs() && 379 !D->isImplicit() && 380 D->getFirstDecl() == D->getMostRecentDecl() && 381 !D->isInvalidDecl() && 382 !D->isTopLevelDeclInObjCContainer() && 383 !D->isModulePrivate() && 384 !needsAnonymousDeclarationNumber(D) && 385 D->getDeclName().getNameKind() == DeclarationName::Identifier) 386 AbbrevToUse = Writer.getDeclTypedefAbbrev(); 387 388 Code = serialization::DECL_TYPEDEF; 389 } 390 391 void ASTDeclWriter::VisitTypeAliasDecl(TypeAliasDecl *D) { 392 VisitTypedefNameDecl(D); 393 Record.AddDeclRef(D->getDescribedAliasTemplate()); 394 Code = serialization::DECL_TYPEALIAS; 395 } 396 397 void ASTDeclWriter::VisitTagDecl(TagDecl *D) { 398 VisitRedeclarable(D); 399 VisitTypeDecl(D); 400 Record.push_back(D->getIdentifierNamespace()); 401 Record.push_back((unsigned)D->getTagKind()); // FIXME: stable encoding 402 if (!isa<CXXRecordDecl>(D)) 403 Record.push_back(D->isCompleteDefinition()); 404 Record.push_back(D->isEmbeddedInDeclarator()); 405 Record.push_back(D->isFreeStanding()); 406 Record.push_back(D->isCompleteDefinitionRequired()); 407 Record.AddSourceRange(D->getBraceRange()); 408 409 if (D->hasExtInfo()) { 410 Record.push_back(1); 411 Record.AddQualifierInfo(*D->getExtInfo()); 412 } else if (auto *TD = D->getTypedefNameForAnonDecl()) { 413 Record.push_back(2); 414 Record.AddDeclRef(TD); 415 Record.AddIdentifierRef(TD->getDeclName().getAsIdentifierInfo()); 416 } else { 417 Record.push_back(0); 418 } 419 } 420 421 void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) { 422 VisitTagDecl(D); 423 Record.AddTypeSourceInfo(D->getIntegerTypeSourceInfo()); 424 if (!D->getIntegerTypeSourceInfo()) 425 Record.AddTypeRef(D->getIntegerType()); 426 Record.AddTypeRef(D->getPromotionType()); 427 Record.push_back(D->getNumPositiveBits()); 428 Record.push_back(D->getNumNegativeBits()); 429 Record.push_back(D->isScoped()); 430 Record.push_back(D->isScopedUsingClassTag()); 431 Record.push_back(D->isFixed()); 432 if (MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo()) { 433 Record.AddDeclRef(MemberInfo->getInstantiatedFrom()); 434 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 435 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation()); 436 } else { 437 Record.AddDeclRef(nullptr); 438 } 439 440 if (D->getDeclContext() == D->getLexicalDeclContext() && 441 !D->hasAttrs() && 442 !D->isImplicit() && 443 !D->isUsed(false) && 444 !D->hasExtInfo() && 445 !D->getTypedefNameForAnonDecl() && 446 D->getFirstDecl() == D->getMostRecentDecl() && 447 !D->isInvalidDecl() && 448 !D->isReferenced() && 449 !D->isTopLevelDeclInObjCContainer() && 450 D->getAccess() == AS_none && 451 !D->isModulePrivate() && 452 !CXXRecordDecl::classofKind(D->getKind()) && 453 !D->getIntegerTypeSourceInfo() && 454 !D->getMemberSpecializationInfo() && 455 !needsAnonymousDeclarationNumber(D) && 456 D->getDeclName().getNameKind() == DeclarationName::Identifier) 457 AbbrevToUse = Writer.getDeclEnumAbbrev(); 458 459 Code = serialization::DECL_ENUM; 460 } 461 462 void ASTDeclWriter::VisitRecordDecl(RecordDecl *D) { 463 VisitTagDecl(D); 464 Record.push_back(D->hasFlexibleArrayMember()); 465 Record.push_back(D->isAnonymousStructOrUnion()); 466 Record.push_back(D->hasObjectMember()); 467 Record.push_back(D->hasVolatileMember()); 468 469 if (D->getDeclContext() == D->getLexicalDeclContext() && 470 !D->hasAttrs() && 471 !D->isImplicit() && 472 !D->isUsed(false) && 473 !D->hasExtInfo() && 474 !D->getTypedefNameForAnonDecl() && 475 D->getFirstDecl() == D->getMostRecentDecl() && 476 !D->isInvalidDecl() && 477 !D->isReferenced() && 478 !D->isTopLevelDeclInObjCContainer() && 479 D->getAccess() == AS_none && 480 !D->isModulePrivate() && 481 !CXXRecordDecl::classofKind(D->getKind()) && 482 !needsAnonymousDeclarationNumber(D) && 483 D->getDeclName().getNameKind() == DeclarationName::Identifier) 484 AbbrevToUse = Writer.getDeclRecordAbbrev(); 485 486 Code = serialization::DECL_RECORD; 487 } 488 489 void ASTDeclWriter::VisitValueDecl(ValueDecl *D) { 490 VisitNamedDecl(D); 491 Record.AddTypeRef(D->getType()); 492 } 493 494 void ASTDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) { 495 VisitValueDecl(D); 496 Record.push_back(D->getInitExpr()? 1 : 0); 497 if (D->getInitExpr()) 498 Record.AddStmt(D->getInitExpr()); 499 Record.AddAPSInt(D->getInitVal()); 500 501 Code = serialization::DECL_ENUM_CONSTANT; 502 } 503 504 void ASTDeclWriter::VisitDeclaratorDecl(DeclaratorDecl *D) { 505 VisitValueDecl(D); 506 Record.AddSourceLocation(D->getInnerLocStart()); 507 Record.push_back(D->hasExtInfo()); 508 if (D->hasExtInfo()) 509 Record.AddQualifierInfo(*D->getExtInfo()); 510 } 511 512 void ASTDeclWriter::VisitFunctionDecl(FunctionDecl *D) { 513 VisitRedeclarable(D); 514 VisitDeclaratorDecl(D); 515 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName()); 516 Record.push_back(D->getIdentifierNamespace()); 517 518 // FunctionDecl's body is handled last at ASTWriterDecl::Visit, 519 // after everything else is written. 520 521 Record.push_back((int)D->SClass); // FIXME: stable encoding 522 Record.push_back(D->IsInline); 523 Record.push_back(D->IsInlineSpecified); 524 Record.push_back(D->IsExplicitSpecified); 525 Record.push_back(D->IsVirtualAsWritten); 526 Record.push_back(D->IsPure); 527 Record.push_back(D->HasInheritedPrototype); 528 Record.push_back(D->HasWrittenPrototype); 529 Record.push_back(D->IsDeleted); 530 Record.push_back(D->IsTrivial); 531 Record.push_back(D->IsDefaulted); 532 Record.push_back(D->IsExplicitlyDefaulted); 533 Record.push_back(D->HasImplicitReturnZero); 534 Record.push_back(D->IsConstexpr); 535 Record.push_back(D->UsesSEHTry); 536 Record.push_back(D->HasSkippedBody); 537 Record.push_back(D->IsLateTemplateParsed); 538 Record.push_back(D->getLinkageInternal()); 539 Record.AddSourceLocation(D->getLocEnd()); 540 541 Record.push_back(D->getODRHash()); 542 543 Record.push_back(D->getTemplatedKind()); 544 switch (D->getTemplatedKind()) { 545 case FunctionDecl::TK_NonTemplate: 546 break; 547 case FunctionDecl::TK_FunctionTemplate: 548 Record.AddDeclRef(D->getDescribedFunctionTemplate()); 549 break; 550 case FunctionDecl::TK_MemberSpecialization: { 551 MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo(); 552 Record.AddDeclRef(MemberInfo->getInstantiatedFrom()); 553 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 554 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation()); 555 break; 556 } 557 case FunctionDecl::TK_FunctionTemplateSpecialization: { 558 FunctionTemplateSpecializationInfo * 559 FTSInfo = D->getTemplateSpecializationInfo(); 560 561 RegisterTemplateSpecialization(FTSInfo->getTemplate(), D); 562 563 Record.AddDeclRef(FTSInfo->getTemplate()); 564 Record.push_back(FTSInfo->getTemplateSpecializationKind()); 565 566 // Template arguments. 567 Record.AddTemplateArgumentList(FTSInfo->TemplateArguments); 568 569 // Template args as written. 570 Record.push_back(FTSInfo->TemplateArgumentsAsWritten != nullptr); 571 if (FTSInfo->TemplateArgumentsAsWritten) { 572 Record.push_back(FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs); 573 for (int i=0, e = FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs; 574 i!=e; ++i) 575 Record.AddTemplateArgumentLoc( 576 (*FTSInfo->TemplateArgumentsAsWritten)[i]); 577 Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->LAngleLoc); 578 Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->RAngleLoc); 579 } 580 581 Record.AddSourceLocation(FTSInfo->getPointOfInstantiation()); 582 583 if (D->isCanonicalDecl()) { 584 // Write the template that contains the specializations set. We will 585 // add a FunctionTemplateSpecializationInfo to it when reading. 586 Record.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl()); 587 } 588 break; 589 } 590 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: { 591 DependentFunctionTemplateSpecializationInfo * 592 DFTSInfo = D->getDependentSpecializationInfo(); 593 594 // Templates. 595 Record.push_back(DFTSInfo->getNumTemplates()); 596 for (int i=0, e = DFTSInfo->getNumTemplates(); i != e; ++i) 597 Record.AddDeclRef(DFTSInfo->getTemplate(i)); 598 599 // Templates args. 600 Record.push_back(DFTSInfo->getNumTemplateArgs()); 601 for (int i=0, e = DFTSInfo->getNumTemplateArgs(); i != e; ++i) 602 Record.AddTemplateArgumentLoc(DFTSInfo->getTemplateArg(i)); 603 Record.AddSourceLocation(DFTSInfo->getLAngleLoc()); 604 Record.AddSourceLocation(DFTSInfo->getRAngleLoc()); 605 break; 606 } 607 } 608 609 Record.push_back(D->param_size()); 610 for (auto P : D->parameters()) 611 Record.AddDeclRef(P); 612 Code = serialization::DECL_FUNCTION; 613 } 614 615 void ASTDeclWriter::VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D) { 616 VisitFunctionDecl(D); 617 Record.push_back(D->IsCopyDeductionCandidate); 618 Code = serialization::DECL_CXX_DEDUCTION_GUIDE; 619 } 620 621 void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) { 622 VisitNamedDecl(D); 623 // FIXME: convert to LazyStmtPtr? 624 // Unlike C/C++, method bodies will never be in header files. 625 bool HasBodyStuff = D->getBody() != nullptr || 626 D->getSelfDecl() != nullptr || D->getCmdDecl() != nullptr; 627 Record.push_back(HasBodyStuff); 628 if (HasBodyStuff) { 629 Record.AddStmt(D->getBody()); 630 Record.AddDeclRef(D->getSelfDecl()); 631 Record.AddDeclRef(D->getCmdDecl()); 632 } 633 Record.push_back(D->isInstanceMethod()); 634 Record.push_back(D->isVariadic()); 635 Record.push_back(D->isPropertyAccessor()); 636 Record.push_back(D->isDefined()); 637 Record.push_back(D->IsOverriding); 638 Record.push_back(D->HasSkippedBody); 639 640 Record.push_back(D->IsRedeclaration); 641 Record.push_back(D->HasRedeclaration); 642 if (D->HasRedeclaration) { 643 assert(Context.getObjCMethodRedeclaration(D)); 644 Record.AddDeclRef(Context.getObjCMethodRedeclaration(D)); 645 } 646 647 // FIXME: stable encoding for @required/@optional 648 Record.push_back(D->getImplementationControl()); 649 // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway/nullability 650 Record.push_back(D->getObjCDeclQualifier()); 651 Record.push_back(D->hasRelatedResultType()); 652 Record.AddTypeRef(D->getReturnType()); 653 Record.AddTypeSourceInfo(D->getReturnTypeSourceInfo()); 654 Record.AddSourceLocation(D->getLocEnd()); 655 Record.push_back(D->param_size()); 656 for (const auto *P : D->parameters()) 657 Record.AddDeclRef(P); 658 659 Record.push_back(D->SelLocsKind); 660 unsigned NumStoredSelLocs = D->getNumStoredSelLocs(); 661 SourceLocation *SelLocs = D->getStoredSelLocs(); 662 Record.push_back(NumStoredSelLocs); 663 for (unsigned i = 0; i != NumStoredSelLocs; ++i) 664 Record.AddSourceLocation(SelLocs[i]); 665 666 Code = serialization::DECL_OBJC_METHOD; 667 } 668 669 void ASTDeclWriter::VisitObjCTypeParamDecl(ObjCTypeParamDecl *D) { 670 VisitTypedefNameDecl(D); 671 Record.push_back(D->Variance); 672 Record.push_back(D->Index); 673 Record.AddSourceLocation(D->VarianceLoc); 674 Record.AddSourceLocation(D->ColonLoc); 675 676 Code = serialization::DECL_OBJC_TYPE_PARAM; 677 } 678 679 void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) { 680 VisitNamedDecl(D); 681 Record.AddSourceLocation(D->getAtStartLoc()); 682 Record.AddSourceRange(D->getAtEndRange()); 683 // Abstract class (no need to define a stable serialization::DECL code). 684 } 685 686 void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) { 687 VisitRedeclarable(D); 688 VisitObjCContainerDecl(D); 689 Record.AddTypeRef(QualType(D->getTypeForDecl(), 0)); 690 AddObjCTypeParamList(D->TypeParamList); 691 692 Record.push_back(D->isThisDeclarationADefinition()); 693 if (D->isThisDeclarationADefinition()) { 694 // Write the DefinitionData 695 ObjCInterfaceDecl::DefinitionData &Data = D->data(); 696 697 Record.AddTypeSourceInfo(D->getSuperClassTInfo()); 698 Record.AddSourceLocation(D->getEndOfDefinitionLoc()); 699 Record.push_back(Data.HasDesignatedInitializers); 700 701 // Write out the protocols that are directly referenced by the @interface. 702 Record.push_back(Data.ReferencedProtocols.size()); 703 for (const auto *P : D->protocols()) 704 Record.AddDeclRef(P); 705 for (const auto &PL : D->protocol_locs()) 706 Record.AddSourceLocation(PL); 707 708 // Write out the protocols that are transitively referenced. 709 Record.push_back(Data.AllReferencedProtocols.size()); 710 for (ObjCList<ObjCProtocolDecl>::iterator 711 P = Data.AllReferencedProtocols.begin(), 712 PEnd = Data.AllReferencedProtocols.end(); 713 P != PEnd; ++P) 714 Record.AddDeclRef(*P); 715 716 717 if (ObjCCategoryDecl *Cat = D->getCategoryListRaw()) { 718 // Ensure that we write out the set of categories for this class. 719 Writer.ObjCClassesWithCategories.insert(D); 720 721 // Make sure that the categories get serialized. 722 for (; Cat; Cat = Cat->getNextClassCategoryRaw()) 723 (void)Writer.GetDeclRef(Cat); 724 } 725 } 726 727 Code = serialization::DECL_OBJC_INTERFACE; 728 } 729 730 void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) { 731 VisitFieldDecl(D); 732 // FIXME: stable encoding for @public/@private/@protected/@package 733 Record.push_back(D->getAccessControl()); 734 Record.push_back(D->getSynthesize()); 735 736 if (D->getDeclContext() == D->getLexicalDeclContext() && 737 !D->hasAttrs() && 738 !D->isImplicit() && 739 !D->isUsed(false) && 740 !D->isInvalidDecl() && 741 !D->isReferenced() && 742 !D->isModulePrivate() && 743 !D->getBitWidth() && 744 !D->hasExtInfo() && 745 D->getDeclName()) 746 AbbrevToUse = Writer.getDeclObjCIvarAbbrev(); 747 748 Code = serialization::DECL_OBJC_IVAR; 749 } 750 751 void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) { 752 VisitRedeclarable(D); 753 VisitObjCContainerDecl(D); 754 755 Record.push_back(D->isThisDeclarationADefinition()); 756 if (D->isThisDeclarationADefinition()) { 757 Record.push_back(D->protocol_size()); 758 for (const auto *I : D->protocols()) 759 Record.AddDeclRef(I); 760 for (const auto &PL : D->protocol_locs()) 761 Record.AddSourceLocation(PL); 762 } 763 764 Code = serialization::DECL_OBJC_PROTOCOL; 765 } 766 767 void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) { 768 VisitFieldDecl(D); 769 Code = serialization::DECL_OBJC_AT_DEFS_FIELD; 770 } 771 772 void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) { 773 VisitObjCContainerDecl(D); 774 Record.AddSourceLocation(D->getCategoryNameLoc()); 775 Record.AddSourceLocation(D->getIvarLBraceLoc()); 776 Record.AddSourceLocation(D->getIvarRBraceLoc()); 777 Record.AddDeclRef(D->getClassInterface()); 778 AddObjCTypeParamList(D->TypeParamList); 779 Record.push_back(D->protocol_size()); 780 for (const auto *I : D->protocols()) 781 Record.AddDeclRef(I); 782 for (const auto &PL : D->protocol_locs()) 783 Record.AddSourceLocation(PL); 784 Code = serialization::DECL_OBJC_CATEGORY; 785 } 786 787 void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) { 788 VisitNamedDecl(D); 789 Record.AddDeclRef(D->getClassInterface()); 790 Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS; 791 } 792 793 void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) { 794 VisitNamedDecl(D); 795 Record.AddSourceLocation(D->getAtLoc()); 796 Record.AddSourceLocation(D->getLParenLoc()); 797 Record.AddTypeRef(D->getType()); 798 Record.AddTypeSourceInfo(D->getTypeSourceInfo()); 799 // FIXME: stable encoding 800 Record.push_back((unsigned)D->getPropertyAttributes()); 801 Record.push_back((unsigned)D->getPropertyAttributesAsWritten()); 802 // FIXME: stable encoding 803 Record.push_back((unsigned)D->getPropertyImplementation()); 804 Record.AddDeclarationName(D->getGetterName()); 805 Record.AddSourceLocation(D->getGetterNameLoc()); 806 Record.AddDeclarationName(D->getSetterName()); 807 Record.AddSourceLocation(D->getSetterNameLoc()); 808 Record.AddDeclRef(D->getGetterMethodDecl()); 809 Record.AddDeclRef(D->getSetterMethodDecl()); 810 Record.AddDeclRef(D->getPropertyIvarDecl()); 811 Code = serialization::DECL_OBJC_PROPERTY; 812 } 813 814 void ASTDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) { 815 VisitObjCContainerDecl(D); 816 Record.AddDeclRef(D->getClassInterface()); 817 // Abstract class (no need to define a stable serialization::DECL code). 818 } 819 820 void ASTDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { 821 VisitObjCImplDecl(D); 822 Record.AddSourceLocation(D->getCategoryNameLoc()); 823 Code = serialization::DECL_OBJC_CATEGORY_IMPL; 824 } 825 826 void ASTDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { 827 VisitObjCImplDecl(D); 828 Record.AddDeclRef(D->getSuperClass()); 829 Record.AddSourceLocation(D->getSuperClassLoc()); 830 Record.AddSourceLocation(D->getIvarLBraceLoc()); 831 Record.AddSourceLocation(D->getIvarRBraceLoc()); 832 Record.push_back(D->hasNonZeroConstructors()); 833 Record.push_back(D->hasDestructors()); 834 Record.push_back(D->NumIvarInitializers); 835 if (D->NumIvarInitializers) 836 Record.AddCXXCtorInitializers( 837 llvm::makeArrayRef(D->init_begin(), D->init_end())); 838 Code = serialization::DECL_OBJC_IMPLEMENTATION; 839 } 840 841 void ASTDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) { 842 VisitDecl(D); 843 Record.AddSourceLocation(D->getLocStart()); 844 Record.AddDeclRef(D->getPropertyDecl()); 845 Record.AddDeclRef(D->getPropertyIvarDecl()); 846 Record.AddSourceLocation(D->getPropertyIvarDeclLoc()); 847 Record.AddStmt(D->getGetterCXXConstructor()); 848 Record.AddStmt(D->getSetterCXXAssignment()); 849 Code = serialization::DECL_OBJC_PROPERTY_IMPL; 850 } 851 852 void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) { 853 VisitDeclaratorDecl(D); 854 Record.push_back(D->isMutable()); 855 856 FieldDecl::InitStorageKind ISK = D->InitStorage.getInt(); 857 Record.push_back(ISK); 858 if (ISK == FieldDecl::ISK_CapturedVLAType) 859 Record.AddTypeRef(QualType(D->getCapturedVLAType(), 0)); 860 else if (ISK) 861 Record.AddStmt(D->getInClassInitializer()); 862 863 Record.AddStmt(D->getBitWidth()); 864 865 if (!D->getDeclName()) 866 Record.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D)); 867 868 if (D->getDeclContext() == D->getLexicalDeclContext() && 869 !D->hasAttrs() && 870 !D->isImplicit() && 871 !D->isUsed(false) && 872 !D->isInvalidDecl() && 873 !D->isReferenced() && 874 !D->isTopLevelDeclInObjCContainer() && 875 !D->isModulePrivate() && 876 !D->getBitWidth() && 877 !D->hasInClassInitializer() && 878 !D->hasCapturedVLAType() && 879 !D->hasExtInfo() && 880 !ObjCIvarDecl::classofKind(D->getKind()) && 881 !ObjCAtDefsFieldDecl::classofKind(D->getKind()) && 882 D->getDeclName()) 883 AbbrevToUse = Writer.getDeclFieldAbbrev(); 884 885 Code = serialization::DECL_FIELD; 886 } 887 888 void ASTDeclWriter::VisitMSPropertyDecl(MSPropertyDecl *D) { 889 VisitDeclaratorDecl(D); 890 Record.AddIdentifierRef(D->getGetterId()); 891 Record.AddIdentifierRef(D->getSetterId()); 892 Code = serialization::DECL_MS_PROPERTY; 893 } 894 895 void ASTDeclWriter::VisitIndirectFieldDecl(IndirectFieldDecl *D) { 896 VisitValueDecl(D); 897 Record.push_back(D->getChainingSize()); 898 899 for (const auto *P : D->chain()) 900 Record.AddDeclRef(P); 901 Code = serialization::DECL_INDIRECTFIELD; 902 } 903 904 void ASTDeclWriter::VisitVarDecl(VarDecl *D) { 905 VisitRedeclarable(D); 906 VisitDeclaratorDecl(D); 907 Record.push_back(D->getStorageClass()); 908 Record.push_back(D->getTSCSpec()); 909 Record.push_back(D->getInitStyle()); 910 if (!isa<ParmVarDecl>(D)) { 911 Record.push_back(D->isThisDeclarationADemotedDefinition()); 912 Record.push_back(D->isExceptionVariable()); 913 Record.push_back(D->isNRVOVariable()); 914 Record.push_back(D->isCXXForRangeDecl()); 915 Record.push_back(D->isARCPseudoStrong()); 916 Record.push_back(D->isInline()); 917 Record.push_back(D->isInlineSpecified()); 918 Record.push_back(D->isConstexpr()); 919 Record.push_back(D->isInitCapture()); 920 Record.push_back(D->isPreviousDeclInSameBlockScope()); 921 if (const auto *IPD = dyn_cast<ImplicitParamDecl>(D)) 922 Record.push_back(static_cast<unsigned>(IPD->getParameterKind())); 923 else 924 Record.push_back(0); 925 } 926 Record.push_back(D->getLinkageInternal()); 927 928 if (D->getInit()) { 929 Record.push_back(!D->isInitKnownICE() ? 1 : (D->isInitICE() ? 3 : 2)); 930 Record.AddStmt(D->getInit()); 931 } else { 932 Record.push_back(0); 933 } 934 935 if (D->getStorageDuration() == SD_Static) { 936 bool ModulesCodegen = false; 937 if (Writer.WritingModule && 938 !D->getDescribedVarTemplate() && !D->getMemberSpecializationInfo() && 939 !isa<VarTemplateSpecializationDecl>(D)) { 940 // When building a C++ Modules TS module interface unit, a strong 941 // definition in the module interface is provided by the compilation of 942 // that module interface unit, not by its users. (Inline variables are 943 // still emitted in module users.) 944 ModulesCodegen = 945 (Writer.WritingModule->Kind == Module::ModuleInterfaceUnit && 946 Writer.Context->GetGVALinkageForVariable(D) == GVA_StrongExternal); 947 } 948 Record.push_back(ModulesCodegen); 949 if (ModulesCodegen) 950 Writer.ModularCodegenDecls.push_back(Writer.GetDeclRef(D)); 951 } 952 953 enum { 954 VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization 955 }; 956 if (VarTemplateDecl *TemplD = D->getDescribedVarTemplate()) { 957 Record.push_back(VarTemplate); 958 Record.AddDeclRef(TemplD); 959 } else if (MemberSpecializationInfo *SpecInfo 960 = D->getMemberSpecializationInfo()) { 961 Record.push_back(StaticDataMemberSpecialization); 962 Record.AddDeclRef(SpecInfo->getInstantiatedFrom()); 963 Record.push_back(SpecInfo->getTemplateSpecializationKind()); 964 Record.AddSourceLocation(SpecInfo->getPointOfInstantiation()); 965 } else { 966 Record.push_back(VarNotTemplate); 967 } 968 969 if (D->getDeclContext() == D->getLexicalDeclContext() && 970 !D->hasAttrs() && 971 !D->isImplicit() && 972 !D->isUsed(false) && 973 !D->isInvalidDecl() && 974 !D->isReferenced() && 975 !D->isTopLevelDeclInObjCContainer() && 976 D->getAccess() == AS_none && 977 !D->isModulePrivate() && 978 !needsAnonymousDeclarationNumber(D) && 979 D->getDeclName().getNameKind() == DeclarationName::Identifier && 980 !D->hasExtInfo() && 981 D->getFirstDecl() == D->getMostRecentDecl() && 982 D->getKind() == Decl::Var && 983 !D->isInline() && 984 !D->isConstexpr() && 985 !D->isInitCapture() && 986 !D->isPreviousDeclInSameBlockScope() && 987 D->getStorageDuration() != SD_Static && 988 !D->getMemberSpecializationInfo()) 989 AbbrevToUse = Writer.getDeclVarAbbrev(); 990 991 Code = serialization::DECL_VAR; 992 } 993 994 void ASTDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) { 995 VisitVarDecl(D); 996 Code = serialization::DECL_IMPLICIT_PARAM; 997 } 998 999 void ASTDeclWriter::VisitParmVarDecl(ParmVarDecl *D) { 1000 VisitVarDecl(D); 1001 Record.push_back(D->isObjCMethodParameter()); 1002 Record.push_back(D->getFunctionScopeDepth()); 1003 Record.push_back(D->getFunctionScopeIndex()); 1004 Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding 1005 Record.push_back(D->isKNRPromoted()); 1006 Record.push_back(D->hasInheritedDefaultArg()); 1007 Record.push_back(D->hasUninstantiatedDefaultArg()); 1008 if (D->hasUninstantiatedDefaultArg()) 1009 Record.AddStmt(D->getUninstantiatedDefaultArg()); 1010 Code = serialization::DECL_PARM_VAR; 1011 1012 assert(!D->isARCPseudoStrong()); // can be true of ImplicitParamDecl 1013 1014 // If the assumptions about the DECL_PARM_VAR abbrev are true, use it. Here 1015 // we dynamically check for the properties that we optimize for, but don't 1016 // know are true of all PARM_VAR_DECLs. 1017 if (D->getDeclContext() == D->getLexicalDeclContext() && 1018 !D->hasAttrs() && 1019 !D->hasExtInfo() && 1020 !D->isImplicit() && 1021 !D->isUsed(false) && 1022 !D->isInvalidDecl() && 1023 !D->isReferenced() && 1024 D->getAccess() == AS_none && 1025 !D->isModulePrivate() && 1026 D->getStorageClass() == 0 && 1027 D->getInitStyle() == VarDecl::CInit && // Can params have anything else? 1028 D->getFunctionScopeDepth() == 0 && 1029 D->getObjCDeclQualifier() == 0 && 1030 !D->isKNRPromoted() && 1031 !D->hasInheritedDefaultArg() && 1032 D->getInit() == nullptr && 1033 !D->hasUninstantiatedDefaultArg()) // No default expr. 1034 AbbrevToUse = Writer.getDeclParmVarAbbrev(); 1035 1036 // Check things we know are true of *every* PARM_VAR_DECL, which is more than 1037 // just us assuming it. 1038 assert(!D->getTSCSpec() && "PARM_VAR_DECL can't use TLS"); 1039 assert(!D->isThisDeclarationADemotedDefinition() 1040 && "PARM_VAR_DECL can't be demoted definition."); 1041 assert(D->getAccess() == AS_none && "PARM_VAR_DECL can't be public/private"); 1042 assert(!D->isExceptionVariable() && "PARM_VAR_DECL can't be exception var"); 1043 assert(D->getPreviousDecl() == nullptr && "PARM_VAR_DECL can't be redecl"); 1044 assert(!D->isStaticDataMember() && 1045 "PARM_VAR_DECL can't be static data member"); 1046 } 1047 1048 void ASTDeclWriter::VisitDecompositionDecl(DecompositionDecl *D) { 1049 // Record the number of bindings first to simplify deserialization. 1050 Record.push_back(D->bindings().size()); 1051 1052 VisitVarDecl(D); 1053 for (auto *B : D->bindings()) 1054 Record.AddDeclRef(B); 1055 Code = serialization::DECL_DECOMPOSITION; 1056 } 1057 1058 void ASTDeclWriter::VisitBindingDecl(BindingDecl *D) { 1059 VisitValueDecl(D); 1060 Record.AddStmt(D->getBinding()); 1061 Code = serialization::DECL_BINDING; 1062 } 1063 1064 void ASTDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) { 1065 VisitDecl(D); 1066 Record.AddStmt(D->getAsmString()); 1067 Record.AddSourceLocation(D->getRParenLoc()); 1068 Code = serialization::DECL_FILE_SCOPE_ASM; 1069 } 1070 1071 void ASTDeclWriter::VisitEmptyDecl(EmptyDecl *D) { 1072 VisitDecl(D); 1073 Code = serialization::DECL_EMPTY; 1074 } 1075 1076 void ASTDeclWriter::VisitBlockDecl(BlockDecl *D) { 1077 VisitDecl(D); 1078 Record.AddStmt(D->getBody()); 1079 Record.AddTypeSourceInfo(D->getSignatureAsWritten()); 1080 Record.push_back(D->param_size()); 1081 for (ParmVarDecl *P : D->parameters()) 1082 Record.AddDeclRef(P); 1083 Record.push_back(D->isVariadic()); 1084 Record.push_back(D->blockMissingReturnType()); 1085 Record.push_back(D->isConversionFromLambda()); 1086 Record.push_back(D->capturesCXXThis()); 1087 Record.push_back(D->getNumCaptures()); 1088 for (const auto &capture : D->captures()) { 1089 Record.AddDeclRef(capture.getVariable()); 1090 1091 unsigned flags = 0; 1092 if (capture.isByRef()) flags |= 1; 1093 if (capture.isNested()) flags |= 2; 1094 if (capture.hasCopyExpr()) flags |= 4; 1095 Record.push_back(flags); 1096 1097 if (capture.hasCopyExpr()) Record.AddStmt(capture.getCopyExpr()); 1098 } 1099 1100 Code = serialization::DECL_BLOCK; 1101 } 1102 1103 void ASTDeclWriter::VisitCapturedDecl(CapturedDecl *CD) { 1104 Record.push_back(CD->getNumParams()); 1105 VisitDecl(CD); 1106 Record.push_back(CD->getContextParamPosition()); 1107 Record.push_back(CD->isNothrow() ? 1 : 0); 1108 // Body is stored by VisitCapturedStmt. 1109 for (unsigned I = 0; I < CD->getNumParams(); ++I) 1110 Record.AddDeclRef(CD->getParam(I)); 1111 Code = serialization::DECL_CAPTURED; 1112 } 1113 1114 void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) { 1115 VisitDecl(D); 1116 Record.push_back(D->getLanguage()); 1117 Record.AddSourceLocation(D->getExternLoc()); 1118 Record.AddSourceLocation(D->getRBraceLoc()); 1119 Code = serialization::DECL_LINKAGE_SPEC; 1120 } 1121 1122 void ASTDeclWriter::VisitExportDecl(ExportDecl *D) { 1123 VisitDecl(D); 1124 Record.AddSourceLocation(D->getRBraceLoc()); 1125 Code = serialization::DECL_EXPORT; 1126 } 1127 1128 void ASTDeclWriter::VisitLabelDecl(LabelDecl *D) { 1129 VisitNamedDecl(D); 1130 Record.AddSourceLocation(D->getLocStart()); 1131 Code = serialization::DECL_LABEL; 1132 } 1133 1134 1135 void ASTDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) { 1136 VisitRedeclarable(D); 1137 VisitNamedDecl(D); 1138 Record.push_back(D->isInline()); 1139 Record.AddSourceLocation(D->getLocStart()); 1140 Record.AddSourceLocation(D->getRBraceLoc()); 1141 1142 if (D->isOriginalNamespace()) 1143 Record.AddDeclRef(D->getAnonymousNamespace()); 1144 Code = serialization::DECL_NAMESPACE; 1145 1146 if (Writer.hasChain() && D->isAnonymousNamespace() && 1147 D == D->getMostRecentDecl()) { 1148 // This is a most recent reopening of the anonymous namespace. If its parent 1149 // is in a previous PCH (or is the TU), mark that parent for update, because 1150 // the original namespace always points to the latest re-opening of its 1151 // anonymous namespace. 1152 Decl *Parent = cast<Decl>( 1153 D->getParent()->getRedeclContext()->getPrimaryContext()); 1154 if (Parent->isFromASTFile() || isa<TranslationUnitDecl>(Parent)) { 1155 Writer.DeclUpdates[Parent].push_back( 1156 ASTWriter::DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, D)); 1157 } 1158 } 1159 } 1160 1161 void ASTDeclWriter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { 1162 VisitRedeclarable(D); 1163 VisitNamedDecl(D); 1164 Record.AddSourceLocation(D->getNamespaceLoc()); 1165 Record.AddSourceLocation(D->getTargetNameLoc()); 1166 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1167 Record.AddDeclRef(D->getNamespace()); 1168 Code = serialization::DECL_NAMESPACE_ALIAS; 1169 } 1170 1171 void ASTDeclWriter::VisitUsingDecl(UsingDecl *D) { 1172 VisitNamedDecl(D); 1173 Record.AddSourceLocation(D->getUsingLoc()); 1174 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1175 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName()); 1176 Record.AddDeclRef(D->FirstUsingShadow.getPointer()); 1177 Record.push_back(D->hasTypename()); 1178 Record.AddDeclRef(Context.getInstantiatedFromUsingDecl(D)); 1179 Code = serialization::DECL_USING; 1180 } 1181 1182 void ASTDeclWriter::VisitUsingPackDecl(UsingPackDecl *D) { 1183 Record.push_back(D->NumExpansions); 1184 VisitNamedDecl(D); 1185 Record.AddDeclRef(D->getInstantiatedFromUsingDecl()); 1186 for (auto *E : D->expansions()) 1187 Record.AddDeclRef(E); 1188 Code = serialization::DECL_USING_PACK; 1189 } 1190 1191 void ASTDeclWriter::VisitUsingShadowDecl(UsingShadowDecl *D) { 1192 VisitRedeclarable(D); 1193 VisitNamedDecl(D); 1194 Record.AddDeclRef(D->getTargetDecl()); 1195 Record.AddDeclRef(D->UsingOrNextShadow); 1196 Record.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D)); 1197 Code = serialization::DECL_USING_SHADOW; 1198 } 1199 1200 void ASTDeclWriter::VisitConstructorUsingShadowDecl( 1201 ConstructorUsingShadowDecl *D) { 1202 VisitUsingShadowDecl(D); 1203 Record.AddDeclRef(D->NominatedBaseClassShadowDecl); 1204 Record.AddDeclRef(D->ConstructedBaseClassShadowDecl); 1205 Record.push_back(D->IsVirtual); 1206 Code = serialization::DECL_CONSTRUCTOR_USING_SHADOW; 1207 } 1208 1209 void ASTDeclWriter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { 1210 VisitNamedDecl(D); 1211 Record.AddSourceLocation(D->getUsingLoc()); 1212 Record.AddSourceLocation(D->getNamespaceKeyLocation()); 1213 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1214 Record.AddDeclRef(D->getNominatedNamespace()); 1215 Record.AddDeclRef(dyn_cast<Decl>(D->getCommonAncestor())); 1216 Code = serialization::DECL_USING_DIRECTIVE; 1217 } 1218 1219 void ASTDeclWriter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) { 1220 VisitValueDecl(D); 1221 Record.AddSourceLocation(D->getUsingLoc()); 1222 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1223 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName()); 1224 Record.AddSourceLocation(D->getEllipsisLoc()); 1225 Code = serialization::DECL_UNRESOLVED_USING_VALUE; 1226 } 1227 1228 void ASTDeclWriter::VisitUnresolvedUsingTypenameDecl( 1229 UnresolvedUsingTypenameDecl *D) { 1230 VisitTypeDecl(D); 1231 Record.AddSourceLocation(D->getTypenameLoc()); 1232 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1233 Record.AddSourceLocation(D->getEllipsisLoc()); 1234 Code = serialization::DECL_UNRESOLVED_USING_TYPENAME; 1235 } 1236 1237 void ASTDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) { 1238 VisitRecordDecl(D); 1239 1240 enum { 1241 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization 1242 }; 1243 if (ClassTemplateDecl *TemplD = D->getDescribedClassTemplate()) { 1244 Record.push_back(CXXRecTemplate); 1245 Record.AddDeclRef(TemplD); 1246 } else if (MemberSpecializationInfo *MSInfo 1247 = D->getMemberSpecializationInfo()) { 1248 Record.push_back(CXXRecMemberSpecialization); 1249 Record.AddDeclRef(MSInfo->getInstantiatedFrom()); 1250 Record.push_back(MSInfo->getTemplateSpecializationKind()); 1251 Record.AddSourceLocation(MSInfo->getPointOfInstantiation()); 1252 } else { 1253 Record.push_back(CXXRecNotTemplate); 1254 } 1255 1256 Record.push_back(D->isThisDeclarationADefinition()); 1257 if (D->isThisDeclarationADefinition()) 1258 Record.AddCXXDefinitionData(D); 1259 1260 // Store (what we currently believe to be) the key function to avoid 1261 // deserializing every method so we can compute it. 1262 if (D->IsCompleteDefinition) 1263 Record.AddDeclRef(Context.getCurrentKeyFunction(D)); 1264 1265 Code = serialization::DECL_CXX_RECORD; 1266 } 1267 1268 void ASTDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) { 1269 VisitFunctionDecl(D); 1270 if (D->isCanonicalDecl()) { 1271 Record.push_back(D->size_overridden_methods()); 1272 for (const CXXMethodDecl *MD : D->overridden_methods()) 1273 Record.AddDeclRef(MD); 1274 } else { 1275 // We only need to record overridden methods once for the canonical decl. 1276 Record.push_back(0); 1277 } 1278 1279 if (D->getDeclContext() == D->getLexicalDeclContext() && 1280 D->getFirstDecl() == D->getMostRecentDecl() && 1281 !D->isInvalidDecl() && 1282 !D->hasAttrs() && 1283 !D->isTopLevelDeclInObjCContainer() && 1284 D->getDeclName().getNameKind() == DeclarationName::Identifier && 1285 !D->hasExtInfo() && 1286 !D->hasInheritedPrototype() && 1287 D->hasWrittenPrototype()) 1288 AbbrevToUse = Writer.getDeclCXXMethodAbbrev(); 1289 1290 Code = serialization::DECL_CXX_METHOD; 1291 } 1292 1293 void ASTDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) { 1294 if (auto Inherited = D->getInheritedConstructor()) { 1295 Record.AddDeclRef(Inherited.getShadowDecl()); 1296 Record.AddDeclRef(Inherited.getConstructor()); 1297 Code = serialization::DECL_CXX_INHERITED_CONSTRUCTOR; 1298 } else { 1299 Code = serialization::DECL_CXX_CONSTRUCTOR; 1300 } 1301 1302 VisitCXXMethodDecl(D); 1303 1304 Code = D->isInheritingConstructor() 1305 ? serialization::DECL_CXX_INHERITED_CONSTRUCTOR 1306 : serialization::DECL_CXX_CONSTRUCTOR; 1307 } 1308 1309 void ASTDeclWriter::VisitCXXDestructorDecl(CXXDestructorDecl *D) { 1310 VisitCXXMethodDecl(D); 1311 1312 Record.AddDeclRef(D->getOperatorDelete()); 1313 if (D->getOperatorDelete()) 1314 Record.AddStmt(D->getOperatorDeleteThisArg()); 1315 1316 Code = serialization::DECL_CXX_DESTRUCTOR; 1317 } 1318 1319 void ASTDeclWriter::VisitCXXConversionDecl(CXXConversionDecl *D) { 1320 VisitCXXMethodDecl(D); 1321 Code = serialization::DECL_CXX_CONVERSION; 1322 } 1323 1324 void ASTDeclWriter::VisitImportDecl(ImportDecl *D) { 1325 VisitDecl(D); 1326 Record.push_back(Writer.getSubmoduleID(D->getImportedModule())); 1327 ArrayRef<SourceLocation> IdentifierLocs = D->getIdentifierLocs(); 1328 Record.push_back(!IdentifierLocs.empty()); 1329 if (IdentifierLocs.empty()) { 1330 Record.AddSourceLocation(D->getLocEnd()); 1331 Record.push_back(1); 1332 } else { 1333 for (unsigned I = 0, N = IdentifierLocs.size(); I != N; ++I) 1334 Record.AddSourceLocation(IdentifierLocs[I]); 1335 Record.push_back(IdentifierLocs.size()); 1336 } 1337 // Note: the number of source locations must always be the last element in 1338 // the record. 1339 Code = serialization::DECL_IMPORT; 1340 } 1341 1342 void ASTDeclWriter::VisitAccessSpecDecl(AccessSpecDecl *D) { 1343 VisitDecl(D); 1344 Record.AddSourceLocation(D->getColonLoc()); 1345 Code = serialization::DECL_ACCESS_SPEC; 1346 } 1347 1348 void ASTDeclWriter::VisitFriendDecl(FriendDecl *D) { 1349 // Record the number of friend type template parameter lists here 1350 // so as to simplify memory allocation during deserialization. 1351 Record.push_back(D->NumTPLists); 1352 VisitDecl(D); 1353 bool hasFriendDecl = D->Friend.is<NamedDecl*>(); 1354 Record.push_back(hasFriendDecl); 1355 if (hasFriendDecl) 1356 Record.AddDeclRef(D->getFriendDecl()); 1357 else 1358 Record.AddTypeSourceInfo(D->getFriendType()); 1359 for (unsigned i = 0; i < D->NumTPLists; ++i) 1360 Record.AddTemplateParameterList(D->getFriendTypeTemplateParameterList(i)); 1361 Record.AddDeclRef(D->getNextFriend()); 1362 Record.push_back(D->UnsupportedFriend); 1363 Record.AddSourceLocation(D->FriendLoc); 1364 Code = serialization::DECL_FRIEND; 1365 } 1366 1367 void ASTDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) { 1368 VisitDecl(D); 1369 Record.push_back(D->getNumTemplateParameters()); 1370 for (unsigned i = 0, e = D->getNumTemplateParameters(); i != e; ++i) 1371 Record.AddTemplateParameterList(D->getTemplateParameterList(i)); 1372 Record.push_back(D->getFriendDecl() != nullptr); 1373 if (D->getFriendDecl()) 1374 Record.AddDeclRef(D->getFriendDecl()); 1375 else 1376 Record.AddTypeSourceInfo(D->getFriendType()); 1377 Record.AddSourceLocation(D->getFriendLoc()); 1378 Code = serialization::DECL_FRIEND_TEMPLATE; 1379 } 1380 1381 void ASTDeclWriter::VisitTemplateDecl(TemplateDecl *D) { 1382 VisitNamedDecl(D); 1383 1384 Record.AddDeclRef(D->getTemplatedDecl()); 1385 Record.AddTemplateParameterList(D->getTemplateParameters()); 1386 } 1387 1388 void ASTDeclWriter::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) { 1389 VisitRedeclarable(D); 1390 1391 // Emit data to initialize CommonOrPrev before VisitTemplateDecl so that 1392 // getCommonPtr() can be used while this is still initializing. 1393 if (D->isFirstDecl()) { 1394 // This declaration owns the 'common' pointer, so serialize that data now. 1395 Record.AddDeclRef(D->getInstantiatedFromMemberTemplate()); 1396 if (D->getInstantiatedFromMemberTemplate()) 1397 Record.push_back(D->isMemberSpecialization()); 1398 } 1399 1400 VisitTemplateDecl(D); 1401 Record.push_back(D->getIdentifierNamespace()); 1402 } 1403 1404 void ASTDeclWriter::VisitClassTemplateDecl(ClassTemplateDecl *D) { 1405 VisitRedeclarableTemplateDecl(D); 1406 1407 if (D->isFirstDecl()) 1408 AddTemplateSpecializations(D); 1409 Code = serialization::DECL_CLASS_TEMPLATE; 1410 } 1411 1412 void ASTDeclWriter::VisitClassTemplateSpecializationDecl( 1413 ClassTemplateSpecializationDecl *D) { 1414 RegisterTemplateSpecialization(D->getSpecializedTemplate(), D); 1415 1416 VisitCXXRecordDecl(D); 1417 1418 llvm::PointerUnion<ClassTemplateDecl *, 1419 ClassTemplatePartialSpecializationDecl *> InstFrom 1420 = D->getSpecializedTemplateOrPartial(); 1421 if (Decl *InstFromD = InstFrom.dyn_cast<ClassTemplateDecl *>()) { 1422 Record.AddDeclRef(InstFromD); 1423 } else { 1424 Record.AddDeclRef(InstFrom.get<ClassTemplatePartialSpecializationDecl *>()); 1425 Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs()); 1426 } 1427 1428 Record.AddTemplateArgumentList(&D->getTemplateArgs()); 1429 Record.AddSourceLocation(D->getPointOfInstantiation()); 1430 Record.push_back(D->getSpecializationKind()); 1431 Record.push_back(D->isCanonicalDecl()); 1432 1433 if (D->isCanonicalDecl()) { 1434 // When reading, we'll add it to the folding set of the following template. 1435 Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl()); 1436 } 1437 1438 // Explicit info. 1439 Record.AddTypeSourceInfo(D->getTypeAsWritten()); 1440 if (D->getTypeAsWritten()) { 1441 Record.AddSourceLocation(D->getExternLoc()); 1442 Record.AddSourceLocation(D->getTemplateKeywordLoc()); 1443 } 1444 1445 Code = serialization::DECL_CLASS_TEMPLATE_SPECIALIZATION; 1446 } 1447 1448 void ASTDeclWriter::VisitClassTemplatePartialSpecializationDecl( 1449 ClassTemplatePartialSpecializationDecl *D) { 1450 VisitClassTemplateSpecializationDecl(D); 1451 1452 Record.AddTemplateParameterList(D->getTemplateParameters()); 1453 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten()); 1454 1455 // These are read/set from/to the first declaration. 1456 if (D->getPreviousDecl() == nullptr) { 1457 Record.AddDeclRef(D->getInstantiatedFromMember()); 1458 Record.push_back(D->isMemberSpecialization()); 1459 } 1460 1461 Code = serialization::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION; 1462 } 1463 1464 void ASTDeclWriter::VisitVarTemplateDecl(VarTemplateDecl *D) { 1465 VisitRedeclarableTemplateDecl(D); 1466 1467 if (D->isFirstDecl()) 1468 AddTemplateSpecializations(D); 1469 Code = serialization::DECL_VAR_TEMPLATE; 1470 } 1471 1472 void ASTDeclWriter::VisitVarTemplateSpecializationDecl( 1473 VarTemplateSpecializationDecl *D) { 1474 RegisterTemplateSpecialization(D->getSpecializedTemplate(), D); 1475 1476 VisitVarDecl(D); 1477 1478 llvm::PointerUnion<VarTemplateDecl *, VarTemplatePartialSpecializationDecl *> 1479 InstFrom = D->getSpecializedTemplateOrPartial(); 1480 if (Decl *InstFromD = InstFrom.dyn_cast<VarTemplateDecl *>()) { 1481 Record.AddDeclRef(InstFromD); 1482 } else { 1483 Record.AddDeclRef(InstFrom.get<VarTemplatePartialSpecializationDecl *>()); 1484 Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs()); 1485 } 1486 1487 // Explicit info. 1488 Record.AddTypeSourceInfo(D->getTypeAsWritten()); 1489 if (D->getTypeAsWritten()) { 1490 Record.AddSourceLocation(D->getExternLoc()); 1491 Record.AddSourceLocation(D->getTemplateKeywordLoc()); 1492 } 1493 1494 Record.AddTemplateArgumentList(&D->getTemplateArgs()); 1495 Record.AddSourceLocation(D->getPointOfInstantiation()); 1496 Record.push_back(D->getSpecializationKind()); 1497 Record.push_back(D->IsCompleteDefinition); 1498 Record.push_back(D->isCanonicalDecl()); 1499 1500 if (D->isCanonicalDecl()) { 1501 // When reading, we'll add it to the folding set of the following template. 1502 Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl()); 1503 } 1504 1505 Code = serialization::DECL_VAR_TEMPLATE_SPECIALIZATION; 1506 } 1507 1508 void ASTDeclWriter::VisitVarTemplatePartialSpecializationDecl( 1509 VarTemplatePartialSpecializationDecl *D) { 1510 VisitVarTemplateSpecializationDecl(D); 1511 1512 Record.AddTemplateParameterList(D->getTemplateParameters()); 1513 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten()); 1514 1515 // These are read/set from/to the first declaration. 1516 if (D->getPreviousDecl() == nullptr) { 1517 Record.AddDeclRef(D->getInstantiatedFromMember()); 1518 Record.push_back(D->isMemberSpecialization()); 1519 } 1520 1521 Code = serialization::DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION; 1522 } 1523 1524 void ASTDeclWriter::VisitClassScopeFunctionSpecializationDecl( 1525 ClassScopeFunctionSpecializationDecl *D) { 1526 VisitDecl(D); 1527 Record.AddDeclRef(D->getSpecialization()); 1528 Code = serialization::DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION; 1529 } 1530 1531 1532 void ASTDeclWriter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) { 1533 VisitRedeclarableTemplateDecl(D); 1534 1535 if (D->isFirstDecl()) 1536 AddTemplateSpecializations(D); 1537 Code = serialization::DECL_FUNCTION_TEMPLATE; 1538 } 1539 1540 void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) { 1541 VisitTypeDecl(D); 1542 1543 Record.push_back(D->wasDeclaredWithTypename()); 1544 1545 bool OwnsDefaultArg = D->hasDefaultArgument() && 1546 !D->defaultArgumentWasInherited(); 1547 Record.push_back(OwnsDefaultArg); 1548 if (OwnsDefaultArg) 1549 Record.AddTypeSourceInfo(D->getDefaultArgumentInfo()); 1550 1551 Code = serialization::DECL_TEMPLATE_TYPE_PARM; 1552 } 1553 1554 void ASTDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { 1555 // For an expanded parameter pack, record the number of expansion types here 1556 // so that it's easier for deserialization to allocate the right amount of 1557 // memory. 1558 if (D->isExpandedParameterPack()) 1559 Record.push_back(D->getNumExpansionTypes()); 1560 1561 VisitDeclaratorDecl(D); 1562 // TemplateParmPosition. 1563 Record.push_back(D->getDepth()); 1564 Record.push_back(D->getPosition()); 1565 1566 if (D->isExpandedParameterPack()) { 1567 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) { 1568 Record.AddTypeRef(D->getExpansionType(I)); 1569 Record.AddTypeSourceInfo(D->getExpansionTypeSourceInfo(I)); 1570 } 1571 1572 Code = serialization::DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK; 1573 } else { 1574 // Rest of NonTypeTemplateParmDecl. 1575 Record.push_back(D->isParameterPack()); 1576 bool OwnsDefaultArg = D->hasDefaultArgument() && 1577 !D->defaultArgumentWasInherited(); 1578 Record.push_back(OwnsDefaultArg); 1579 if (OwnsDefaultArg) 1580 Record.AddStmt(D->getDefaultArgument()); 1581 Code = serialization::DECL_NON_TYPE_TEMPLATE_PARM; 1582 } 1583 } 1584 1585 void ASTDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) { 1586 // For an expanded parameter pack, record the number of expansion types here 1587 // so that it's easier for deserialization to allocate the right amount of 1588 // memory. 1589 if (D->isExpandedParameterPack()) 1590 Record.push_back(D->getNumExpansionTemplateParameters()); 1591 1592 VisitTemplateDecl(D); 1593 // TemplateParmPosition. 1594 Record.push_back(D->getDepth()); 1595 Record.push_back(D->getPosition()); 1596 1597 if (D->isExpandedParameterPack()) { 1598 for (unsigned I = 0, N = D->getNumExpansionTemplateParameters(); 1599 I != N; ++I) 1600 Record.AddTemplateParameterList(D->getExpansionTemplateParameters(I)); 1601 Code = serialization::DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK; 1602 } else { 1603 // Rest of TemplateTemplateParmDecl. 1604 Record.push_back(D->isParameterPack()); 1605 bool OwnsDefaultArg = D->hasDefaultArgument() && 1606 !D->defaultArgumentWasInherited(); 1607 Record.push_back(OwnsDefaultArg); 1608 if (OwnsDefaultArg) 1609 Record.AddTemplateArgumentLoc(D->getDefaultArgument()); 1610 Code = serialization::DECL_TEMPLATE_TEMPLATE_PARM; 1611 } 1612 } 1613 1614 void ASTDeclWriter::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) { 1615 VisitRedeclarableTemplateDecl(D); 1616 Code = serialization::DECL_TYPE_ALIAS_TEMPLATE; 1617 } 1618 1619 void ASTDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) { 1620 VisitDecl(D); 1621 Record.AddStmt(D->getAssertExpr()); 1622 Record.push_back(D->isFailed()); 1623 Record.AddStmt(D->getMessage()); 1624 Record.AddSourceLocation(D->getRParenLoc()); 1625 Code = serialization::DECL_STATIC_ASSERT; 1626 } 1627 1628 /// \brief Emit the DeclContext part of a declaration context decl. 1629 void ASTDeclWriter::VisitDeclContext(DeclContext *DC) { 1630 Record.AddOffset(Writer.WriteDeclContextLexicalBlock(Context, DC)); 1631 Record.AddOffset(Writer.WriteDeclContextVisibleBlock(Context, DC)); 1632 } 1633 1634 const Decl *ASTWriter::getFirstLocalDecl(const Decl *D) { 1635 assert(IsLocalDecl(D) && "expected a local declaration"); 1636 1637 const Decl *Canon = D->getCanonicalDecl(); 1638 if (IsLocalDecl(Canon)) 1639 return Canon; 1640 1641 const Decl *&CacheEntry = FirstLocalDeclCache[Canon]; 1642 if (CacheEntry) 1643 return CacheEntry; 1644 1645 for (const Decl *Redecl = D; Redecl; Redecl = Redecl->getPreviousDecl()) 1646 if (IsLocalDecl(Redecl)) 1647 D = Redecl; 1648 return CacheEntry = D; 1649 } 1650 1651 template <typename T> 1652 void ASTDeclWriter::VisitRedeclarable(Redeclarable<T> *D) { 1653 T *First = D->getFirstDecl(); 1654 T *MostRecent = First->getMostRecentDecl(); 1655 T *DAsT = static_cast<T *>(D); 1656 if (MostRecent != First) { 1657 assert(isRedeclarableDeclKind(DAsT->getKind()) && 1658 "Not considered redeclarable?"); 1659 1660 Record.AddDeclRef(First); 1661 1662 // Write out a list of local redeclarations of this declaration if it's the 1663 // first local declaration in the chain. 1664 const Decl *FirstLocal = Writer.getFirstLocalDecl(DAsT); 1665 if (DAsT == FirstLocal) { 1666 // Emit a list of all imported first declarations so that we can be sure 1667 // that all redeclarations visible to this module are before D in the 1668 // redecl chain. 1669 unsigned I = Record.size(); 1670 Record.push_back(0); 1671 if (Writer.Chain) 1672 AddFirstDeclFromEachModule(DAsT, /*IncludeLocal*/false); 1673 // This is the number of imported first declarations + 1. 1674 Record[I] = Record.size() - I; 1675 1676 // Collect the set of local redeclarations of this declaration, from 1677 // newest to oldest. 1678 ASTWriter::RecordData LocalRedecls; 1679 ASTRecordWriter LocalRedeclWriter(Record, LocalRedecls); 1680 for (const Decl *Prev = FirstLocal->getMostRecentDecl(); 1681 Prev != FirstLocal; Prev = Prev->getPreviousDecl()) 1682 if (!Prev->isFromASTFile()) 1683 LocalRedeclWriter.AddDeclRef(Prev); 1684 1685 // If we have any redecls, write them now as a separate record preceding 1686 // the declaration itself. 1687 if (LocalRedecls.empty()) 1688 Record.push_back(0); 1689 else 1690 Record.AddOffset(LocalRedeclWriter.Emit(LOCAL_REDECLARATIONS)); 1691 } else { 1692 Record.push_back(0); 1693 Record.AddDeclRef(FirstLocal); 1694 } 1695 1696 // Make sure that we serialize both the previous and the most-recent 1697 // declarations, which (transitively) ensures that all declarations in the 1698 // chain get serialized. 1699 // 1700 // FIXME: This is not correct; when we reach an imported declaration we 1701 // won't emit its previous declaration. 1702 (void)Writer.GetDeclRef(D->getPreviousDecl()); 1703 (void)Writer.GetDeclRef(MostRecent); 1704 } else { 1705 // We use the sentinel value 0 to indicate an only declaration. 1706 Record.push_back(0); 1707 } 1708 } 1709 1710 void ASTDeclWriter::VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D) { 1711 Record.push_back(D->varlist_size()); 1712 VisitDecl(D); 1713 for (auto *I : D->varlists()) 1714 Record.AddStmt(I); 1715 Code = serialization::DECL_OMP_THREADPRIVATE; 1716 } 1717 1718 void ASTDeclWriter::VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D) { 1719 VisitValueDecl(D); 1720 Record.AddSourceLocation(D->getLocStart()); 1721 Record.AddStmt(D->getCombiner()); 1722 Record.AddStmt(D->getInitializer()); 1723 Record.push_back(D->getInitializerKind()); 1724 Record.AddDeclRef(D->getPrevDeclInScope()); 1725 Code = serialization::DECL_OMP_DECLARE_REDUCTION; 1726 } 1727 1728 void ASTDeclWriter::VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D) { 1729 VisitVarDecl(D); 1730 Code = serialization::DECL_OMP_CAPTUREDEXPR; 1731 } 1732 1733 //===----------------------------------------------------------------------===// 1734 // ASTWriter Implementation 1735 //===----------------------------------------------------------------------===// 1736 1737 void ASTWriter::WriteDeclAbbrevs() { 1738 using namespace llvm; 1739 1740 std::shared_ptr<BitCodeAbbrev> Abv; 1741 1742 // Abbreviation for DECL_FIELD 1743 Abv = std::make_shared<BitCodeAbbrev>(); 1744 Abv->Add(BitCodeAbbrevOp(serialization::DECL_FIELD)); 1745 // Decl 1746 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1747 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1748 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1749 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1750 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1751 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1752 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1753 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1754 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier 1755 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1756 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1757 // NamedDecl 1758 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1759 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1760 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1761 // ValueDecl 1762 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1763 // DeclaratorDecl 1764 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1765 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1766 // FieldDecl 1767 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 1768 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle 1769 // Type Source Info 1770 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1771 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1772 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1773 DeclFieldAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1774 1775 // Abbreviation for DECL_OBJC_IVAR 1776 Abv = std::make_shared<BitCodeAbbrev>(); 1777 Abv->Add(BitCodeAbbrevOp(serialization::DECL_OBJC_IVAR)); 1778 // Decl 1779 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1780 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1781 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1782 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1783 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1784 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1785 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1786 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1787 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier 1788 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1789 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1790 // NamedDecl 1791 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1792 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1793 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1794 // ValueDecl 1795 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1796 // DeclaratorDecl 1797 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1798 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1799 // FieldDecl 1800 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 1801 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle 1802 // ObjC Ivar 1803 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getAccessControl 1804 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getSynthesize 1805 // Type Source Info 1806 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1807 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1808 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1809 DeclObjCIvarAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1810 1811 // Abbreviation for DECL_ENUM 1812 Abv = std::make_shared<BitCodeAbbrev>(); 1813 Abv->Add(BitCodeAbbrevOp(serialization::DECL_ENUM)); 1814 // Redeclarable 1815 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1816 // Decl 1817 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1818 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1819 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1820 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1821 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1822 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1823 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1824 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1825 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1826 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1827 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1828 // NamedDecl 1829 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1830 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1831 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1832 // TypeDecl 1833 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1834 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1835 // TagDecl 1836 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 1837 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind 1838 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition 1839 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator 1840 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding 1841 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired 1842 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1843 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1844 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind 1845 // EnumDecl 1846 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // AddTypeRef 1847 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IntegerType 1848 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getPromotionType 1849 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumPositiveBits 1850 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumNegativeBits 1851 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScoped 1852 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScopedUsingClassTag 1853 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isFixed 1854 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InstantiatedMembEnum 1855 // DC 1856 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 1857 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 1858 DeclEnumAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1859 1860 // Abbreviation for DECL_RECORD 1861 Abv = std::make_shared<BitCodeAbbrev>(); 1862 Abv->Add(BitCodeAbbrevOp(serialization::DECL_RECORD)); 1863 // Redeclarable 1864 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1865 // Decl 1866 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1867 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1868 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1869 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1870 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1871 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1872 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1873 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1874 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1875 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1876 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1877 // NamedDecl 1878 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1879 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1880 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1881 // TypeDecl 1882 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1883 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1884 // TagDecl 1885 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 1886 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind 1887 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition 1888 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator 1889 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding 1890 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired 1891 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1892 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1893 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind 1894 // RecordDecl 1895 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // FlexibleArrayMember 1896 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // AnonymousStructUnion 1897 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasObjectMember 1898 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasVolatileMember 1899 // DC 1900 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 1901 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 1902 DeclRecordAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1903 1904 // Abbreviation for DECL_PARM_VAR 1905 Abv = std::make_shared<BitCodeAbbrev>(); 1906 Abv->Add(BitCodeAbbrevOp(serialization::DECL_PARM_VAR)); 1907 // Redeclarable 1908 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1909 // Decl 1910 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1911 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1912 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1913 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1914 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1915 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1916 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1917 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1918 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1919 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1920 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1921 // NamedDecl 1922 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1923 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1924 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1925 // ValueDecl 1926 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1927 // DeclaratorDecl 1928 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1929 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1930 // VarDecl 1931 Abv->Add(BitCodeAbbrevOp(0)); // SClass 1932 Abv->Add(BitCodeAbbrevOp(0)); // TSCSpec 1933 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle 1934 Abv->Add(BitCodeAbbrevOp(0)); // Linkage 1935 Abv->Add(BitCodeAbbrevOp(0)); // HasInit 1936 Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo 1937 // ParmVarDecl 1938 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsObjCMethodParameter 1939 Abv->Add(BitCodeAbbrevOp(0)); // ScopeDepth 1940 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ScopeIndex 1941 Abv->Add(BitCodeAbbrevOp(0)); // ObjCDeclQualifier 1942 Abv->Add(BitCodeAbbrevOp(0)); // KNRPromoted 1943 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedDefaultArg 1944 Abv->Add(BitCodeAbbrevOp(0)); // HasUninstantiatedDefaultArg 1945 // Type Source Info 1946 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1947 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1948 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1949 DeclParmVarAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1950 1951 // Abbreviation for DECL_TYPEDEF 1952 Abv = std::make_shared<BitCodeAbbrev>(); 1953 Abv->Add(BitCodeAbbrevOp(serialization::DECL_TYPEDEF)); 1954 // Redeclarable 1955 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1956 // Decl 1957 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1958 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1959 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1960 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1961 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1962 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isUsed 1963 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isReferenced 1964 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1965 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // C++ AccessSpecifier 1966 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1967 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1968 // NamedDecl 1969 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1970 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1971 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1972 // TypeDecl 1973 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1974 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1975 // TypedefDecl 1976 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1977 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1978 DeclTypedefAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1979 1980 // Abbreviation for DECL_VAR 1981 Abv = std::make_shared<BitCodeAbbrev>(); 1982 Abv->Add(BitCodeAbbrevOp(serialization::DECL_VAR)); 1983 // Redeclarable 1984 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1985 // Decl 1986 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1987 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1988 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1989 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1990 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1991 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1992 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1993 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1994 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1995 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1996 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1997 // NamedDecl 1998 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1999 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 2000 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2001 // ValueDecl 2002 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2003 // DeclaratorDecl 2004 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 2005 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 2006 // VarDecl 2007 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // SClass 2008 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // TSCSpec 2009 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // InitStyle 2010 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsThisDeclarationADemotedDefinition 2011 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isExceptionVariable 2012 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isNRVOVariable 2013 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCXXForRangeDecl 2014 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isARCPseudoStrong 2015 Abv->Add(BitCodeAbbrevOp(0)); // isInline 2016 Abv->Add(BitCodeAbbrevOp(0)); // isInlineSpecified 2017 Abv->Add(BitCodeAbbrevOp(0)); // isConstexpr 2018 Abv->Add(BitCodeAbbrevOp(0)); // isInitCapture 2019 Abv->Add(BitCodeAbbrevOp(0)); // isPrevDeclInSameScope 2020 Abv->Add(BitCodeAbbrevOp(0)); // ImplicitParamKind 2021 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage 2022 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // IsInitICE (local) 2023 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // VarKind (local enum) 2024 // Type Source Info 2025 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 2026 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 2027 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 2028 DeclVarAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2029 2030 // Abbreviation for DECL_CXX_METHOD 2031 Abv = std::make_shared<BitCodeAbbrev>(); 2032 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CXX_METHOD)); 2033 // RedeclarableDecl 2034 Abv->Add(BitCodeAbbrevOp(0)); // CanonicalDecl 2035 // Decl 2036 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 2037 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 2038 Abv->Add(BitCodeAbbrevOp(0)); // Invalid 2039 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 2040 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Implicit 2041 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Used 2042 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Referenced 2043 Abv->Add(BitCodeAbbrevOp(0)); // InObjCContainer 2044 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Access 2045 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModulePrivate 2046 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2047 // NamedDecl 2048 Abv->Add(BitCodeAbbrevOp(DeclarationName::Identifier)); // NameKind 2049 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Identifier 2050 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2051 // ValueDecl 2052 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2053 // DeclaratorDecl 2054 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerLocStart 2055 Abv->Add(BitCodeAbbrevOp(0)); // HasExtInfo 2056 // FunctionDecl 2057 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 11)); // IDNS 2058 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // StorageClass 2059 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Inline 2060 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InlineSpecified 2061 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ExplicitSpecified 2062 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // VirtualAsWritten 2063 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Pure 2064 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedProto 2065 Abv->Add(BitCodeAbbrevOp(1)); // HasWrittenProto 2066 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Deleted 2067 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Trivial 2068 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Defaulted 2069 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ExplicitlyDefaulted 2070 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ImplicitReturnZero 2071 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Constexpr 2072 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // UsesSEHTry 2073 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // SkippedBody 2074 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // LateParsed 2075 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage 2076 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LocEnd 2077 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // ODRHash 2078 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // TemplateKind 2079 // This Array slurps the rest of the record. Fortunately we want to encode 2080 // (nearly) all the remaining (variable number of) fields in the same way. 2081 // 2082 // This is the function template information if any, then 2083 // NumParams and Params[] from FunctionDecl, and 2084 // NumOverriddenMethods, OverriddenMethods[] from CXXMethodDecl. 2085 // 2086 // Add an AbbrevOp for 'size then elements' and use it here. 2087 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 2088 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 2089 DeclCXXMethodAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2090 2091 // Abbreviation for EXPR_DECL_REF 2092 Abv = std::make_shared<BitCodeAbbrev>(); 2093 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_DECL_REF)); 2094 //Stmt 2095 //Expr 2096 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2097 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 2098 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 2099 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 2100 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 2101 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 2102 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 2103 //DeclRefExpr 2104 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HasQualifier 2105 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //GetDeclFound 2106 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ExplicitTemplateArgs 2107 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HadMultipleCandidates 2108 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2109 1)); // RefersToEnclosingVariableOrCapture 2110 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclRef 2111 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 2112 DeclRefExprAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2113 2114 // Abbreviation for EXPR_INTEGER_LITERAL 2115 Abv = std::make_shared<BitCodeAbbrev>(); 2116 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_INTEGER_LITERAL)); 2117 //Stmt 2118 //Expr 2119 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2120 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 2121 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 2122 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 2123 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 2124 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 2125 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 2126 //Integer Literal 2127 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 2128 Abv->Add(BitCodeAbbrevOp(32)); // Bit Width 2129 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Value 2130 IntegerLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2131 2132 // Abbreviation for EXPR_CHARACTER_LITERAL 2133 Abv = std::make_shared<BitCodeAbbrev>(); 2134 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CHARACTER_LITERAL)); 2135 //Stmt 2136 //Expr 2137 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2138 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 2139 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 2140 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 2141 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 2142 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 2143 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 2144 //Character Literal 2145 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getValue 2146 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 2147 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // getKind 2148 CharacterLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2149 2150 // Abbreviation for EXPR_IMPLICIT_CAST 2151 Abv = std::make_shared<BitCodeAbbrev>(); 2152 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_IMPLICIT_CAST)); 2153 // Stmt 2154 // Expr 2155 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2156 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 2157 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 2158 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 2159 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 2160 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 2161 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 2162 // CastExpr 2163 Abv->Add(BitCodeAbbrevOp(0)); // PathSize 2164 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 6)); // CastKind 2165 // ImplicitCastExpr 2166 ExprImplicitCastAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2167 2168 Abv = std::make_shared<BitCodeAbbrev>(); 2169 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_LEXICAL)); 2170 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2171 DeclContextLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2172 2173 Abv = std::make_shared<BitCodeAbbrev>(); 2174 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_VISIBLE)); 2175 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2176 DeclContextVisibleLookupAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2177 } 2178 2179 /// isRequiredDecl - Check if this is a "required" Decl, which must be seen by 2180 /// consumers of the AST. 2181 /// 2182 /// Such decls will always be deserialized from the AST file, so we would like 2183 /// this to be as restrictive as possible. Currently the predicate is driven by 2184 /// code generation requirements, if other clients have a different notion of 2185 /// what is "required" then we may have to consider an alternate scheme where 2186 /// clients can iterate over the top-level decls and get information on them, 2187 /// without necessary deserializing them. We could explicitly require such 2188 /// clients to use a separate API call to "realize" the decl. This should be 2189 /// relatively painless since they would presumably only do it for top-level 2190 /// decls. 2191 static bool isRequiredDecl(const Decl *D, ASTContext &Context, 2192 bool WritingModule) { 2193 // An ObjCMethodDecl is never considered as "required" because its 2194 // implementation container always is. 2195 2196 // File scoped assembly or obj-c or OMP declare target implementation must be 2197 // seen. 2198 if (isa<FileScopeAsmDecl>(D) || isa<ObjCImplDecl>(D) || 2199 D->hasAttr<OMPDeclareTargetDeclAttr>()) 2200 return true; 2201 2202 if (WritingModule && (isa<VarDecl>(D) || isa<ImportDecl>(D))) { 2203 // These declarations are part of the module initializer, and are emitted 2204 // if and when the module is imported, rather than being emitted eagerly. 2205 return false; 2206 } 2207 2208 return Context.DeclMustBeEmitted(D); 2209 } 2210 2211 void ASTWriter::WriteDecl(ASTContext &Context, Decl *D) { 2212 // Determine the ID for this declaration. 2213 serialization::DeclID ID; 2214 assert(!D->isFromASTFile() && "should not be emitting imported decl"); 2215 serialization::DeclID &IDR = DeclIDs[D]; 2216 if (IDR == 0) 2217 IDR = NextDeclID++; 2218 2219 ID = IDR; 2220 2221 assert(ID >= FirstDeclID && "invalid decl ID"); 2222 2223 RecordData Record; 2224 ASTDeclWriter W(*this, Context, Record); 2225 2226 // Build a record for this declaration 2227 W.Visit(D); 2228 2229 // Emit this declaration to the bitstream. 2230 uint64_t Offset = W.Emit(D); 2231 2232 // Record the offset for this declaration 2233 SourceLocation Loc = D->getLocation(); 2234 unsigned Index = ID - FirstDeclID; 2235 if (DeclOffsets.size() == Index) 2236 DeclOffsets.push_back(DeclOffset(Loc, Offset)); 2237 else if (DeclOffsets.size() < Index) { 2238 // FIXME: Can/should this happen? 2239 DeclOffsets.resize(Index+1); 2240 DeclOffsets[Index].setLocation(Loc); 2241 DeclOffsets[Index].BitOffset = Offset; 2242 } else { 2243 llvm_unreachable("declarations should be emitted in ID order"); 2244 } 2245 2246 SourceManager &SM = Context.getSourceManager(); 2247 if (Loc.isValid() && SM.isLocalSourceLocation(Loc)) 2248 associateDeclWithFile(D, ID); 2249 2250 // Note declarations that should be deserialized eagerly so that we can add 2251 // them to a record in the AST file later. 2252 if (isRequiredDecl(D, Context, WritingModule)) 2253 EagerlyDeserializedDecls.push_back(ID); 2254 } 2255 2256 void ASTRecordWriter::AddFunctionDefinition(const FunctionDecl *FD) { 2257 // Switch case IDs are per function body. 2258 Writer->ClearSwitchCaseIDs(); 2259 2260 assert(FD->doesThisDeclarationHaveABody()); 2261 bool ModulesCodegen = false; 2262 if (Writer->WritingModule && !FD->isDependentContext()) { 2263 Optional<GVALinkage> Linkage; 2264 if (Writer->WritingModule->Kind == Module::ModuleInterfaceUnit) { 2265 // When building a C++ Modules TS module interface unit, a strong 2266 // definition in the module interface is provided by the compilation of 2267 // that module interface unit, not by its users. (Inline functions are 2268 // still emitted in module users.) 2269 Linkage = Writer->Context->GetGVALinkageForFunction(FD); 2270 ModulesCodegen = *Linkage == GVA_StrongExternal; 2271 } 2272 if (Writer->Context->getLangOpts().ModulesCodegen) { 2273 // Under -fmodules-codegen, codegen is performed for all non-internal, 2274 // non-always_inline functions. 2275 if (!FD->hasAttr<AlwaysInlineAttr>()) { 2276 if (!Linkage) 2277 Linkage = Writer->Context->GetGVALinkageForFunction(FD); 2278 ModulesCodegen = *Linkage != GVA_Internal; 2279 } 2280 } 2281 } 2282 Record->push_back(ModulesCodegen); 2283 if (ModulesCodegen) 2284 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(FD)); 2285 if (auto *CD = dyn_cast<CXXConstructorDecl>(FD)) { 2286 Record->push_back(CD->getNumCtorInitializers()); 2287 if (CD->getNumCtorInitializers()) 2288 AddCXXCtorInitializers( 2289 llvm::makeArrayRef(CD->init_begin(), CD->init_end())); 2290 } 2291 AddStmt(FD->getBody()); 2292 } 2293