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->getTemplatedKind()); 542 switch (D->getTemplatedKind()) { 543 case FunctionDecl::TK_NonTemplate: 544 break; 545 case FunctionDecl::TK_FunctionTemplate: 546 Record.AddDeclRef(D->getDescribedFunctionTemplate()); 547 break; 548 case FunctionDecl::TK_MemberSpecialization: { 549 MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo(); 550 Record.AddDeclRef(MemberInfo->getInstantiatedFrom()); 551 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 552 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation()); 553 break; 554 } 555 case FunctionDecl::TK_FunctionTemplateSpecialization: { 556 FunctionTemplateSpecializationInfo * 557 FTSInfo = D->getTemplateSpecializationInfo(); 558 559 RegisterTemplateSpecialization(FTSInfo->getTemplate(), D); 560 561 Record.AddDeclRef(FTSInfo->getTemplate()); 562 Record.push_back(FTSInfo->getTemplateSpecializationKind()); 563 564 // Template arguments. 565 Record.AddTemplateArgumentList(FTSInfo->TemplateArguments); 566 567 // Template args as written. 568 Record.push_back(FTSInfo->TemplateArgumentsAsWritten != nullptr); 569 if (FTSInfo->TemplateArgumentsAsWritten) { 570 Record.push_back(FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs); 571 for (int i=0, e = FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs; 572 i!=e; ++i) 573 Record.AddTemplateArgumentLoc( 574 (*FTSInfo->TemplateArgumentsAsWritten)[i]); 575 Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->LAngleLoc); 576 Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->RAngleLoc); 577 } 578 579 Record.AddSourceLocation(FTSInfo->getPointOfInstantiation()); 580 581 if (D->isCanonicalDecl()) { 582 // Write the template that contains the specializations set. We will 583 // add a FunctionTemplateSpecializationInfo to it when reading. 584 Record.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl()); 585 } 586 break; 587 } 588 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: { 589 DependentFunctionTemplateSpecializationInfo * 590 DFTSInfo = D->getDependentSpecializationInfo(); 591 592 // Templates. 593 Record.push_back(DFTSInfo->getNumTemplates()); 594 for (int i=0, e = DFTSInfo->getNumTemplates(); i != e; ++i) 595 Record.AddDeclRef(DFTSInfo->getTemplate(i)); 596 597 // Templates args. 598 Record.push_back(DFTSInfo->getNumTemplateArgs()); 599 for (int i=0, e = DFTSInfo->getNumTemplateArgs(); i != e; ++i) 600 Record.AddTemplateArgumentLoc(DFTSInfo->getTemplateArg(i)); 601 Record.AddSourceLocation(DFTSInfo->getLAngleLoc()); 602 Record.AddSourceLocation(DFTSInfo->getRAngleLoc()); 603 break; 604 } 605 } 606 607 Record.push_back(D->param_size()); 608 for (auto P : D->parameters()) 609 Record.AddDeclRef(P); 610 Code = serialization::DECL_FUNCTION; 611 } 612 613 void ASTDeclWriter::VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D) { 614 VisitFunctionDecl(D); 615 Code = serialization::DECL_CXX_DEDUCTION_GUIDE; 616 } 617 618 void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) { 619 VisitNamedDecl(D); 620 // FIXME: convert to LazyStmtPtr? 621 // Unlike C/C++, method bodies will never be in header files. 622 bool HasBodyStuff = D->getBody() != nullptr || 623 D->getSelfDecl() != nullptr || D->getCmdDecl() != nullptr; 624 Record.push_back(HasBodyStuff); 625 if (HasBodyStuff) { 626 Record.AddStmt(D->getBody()); 627 Record.AddDeclRef(D->getSelfDecl()); 628 Record.AddDeclRef(D->getCmdDecl()); 629 } 630 Record.push_back(D->isInstanceMethod()); 631 Record.push_back(D->isVariadic()); 632 Record.push_back(D->isPropertyAccessor()); 633 Record.push_back(D->isDefined()); 634 Record.push_back(D->IsOverriding); 635 Record.push_back(D->HasSkippedBody); 636 637 Record.push_back(D->IsRedeclaration); 638 Record.push_back(D->HasRedeclaration); 639 if (D->HasRedeclaration) { 640 assert(Context.getObjCMethodRedeclaration(D)); 641 Record.AddDeclRef(Context.getObjCMethodRedeclaration(D)); 642 } 643 644 // FIXME: stable encoding for @required/@optional 645 Record.push_back(D->getImplementationControl()); 646 // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway/nullability 647 Record.push_back(D->getObjCDeclQualifier()); 648 Record.push_back(D->hasRelatedResultType()); 649 Record.AddTypeRef(D->getReturnType()); 650 Record.AddTypeSourceInfo(D->getReturnTypeSourceInfo()); 651 Record.AddSourceLocation(D->getLocEnd()); 652 Record.push_back(D->param_size()); 653 for (const auto *P : D->parameters()) 654 Record.AddDeclRef(P); 655 656 Record.push_back(D->SelLocsKind); 657 unsigned NumStoredSelLocs = D->getNumStoredSelLocs(); 658 SourceLocation *SelLocs = D->getStoredSelLocs(); 659 Record.push_back(NumStoredSelLocs); 660 for (unsigned i = 0; i != NumStoredSelLocs; ++i) 661 Record.AddSourceLocation(SelLocs[i]); 662 663 Code = serialization::DECL_OBJC_METHOD; 664 } 665 666 void ASTDeclWriter::VisitObjCTypeParamDecl(ObjCTypeParamDecl *D) { 667 VisitTypedefNameDecl(D); 668 Record.push_back(D->Variance); 669 Record.push_back(D->Index); 670 Record.AddSourceLocation(D->VarianceLoc); 671 Record.AddSourceLocation(D->ColonLoc); 672 673 Code = serialization::DECL_OBJC_TYPE_PARAM; 674 } 675 676 void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) { 677 VisitNamedDecl(D); 678 Record.AddSourceLocation(D->getAtStartLoc()); 679 Record.AddSourceRange(D->getAtEndRange()); 680 // Abstract class (no need to define a stable serialization::DECL code). 681 } 682 683 void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) { 684 VisitRedeclarable(D); 685 VisitObjCContainerDecl(D); 686 Record.AddTypeRef(QualType(D->getTypeForDecl(), 0)); 687 AddObjCTypeParamList(D->TypeParamList); 688 689 Record.push_back(D->isThisDeclarationADefinition()); 690 if (D->isThisDeclarationADefinition()) { 691 // Write the DefinitionData 692 ObjCInterfaceDecl::DefinitionData &Data = D->data(); 693 694 Record.AddTypeSourceInfo(D->getSuperClassTInfo()); 695 Record.AddSourceLocation(D->getEndOfDefinitionLoc()); 696 Record.push_back(Data.HasDesignatedInitializers); 697 698 // Write out the protocols that are directly referenced by the @interface. 699 Record.push_back(Data.ReferencedProtocols.size()); 700 for (const auto *P : D->protocols()) 701 Record.AddDeclRef(P); 702 for (const auto &PL : D->protocol_locs()) 703 Record.AddSourceLocation(PL); 704 705 // Write out the protocols that are transitively referenced. 706 Record.push_back(Data.AllReferencedProtocols.size()); 707 for (ObjCList<ObjCProtocolDecl>::iterator 708 P = Data.AllReferencedProtocols.begin(), 709 PEnd = Data.AllReferencedProtocols.end(); 710 P != PEnd; ++P) 711 Record.AddDeclRef(*P); 712 713 714 if (ObjCCategoryDecl *Cat = D->getCategoryListRaw()) { 715 // Ensure that we write out the set of categories for this class. 716 Writer.ObjCClassesWithCategories.insert(D); 717 718 // Make sure that the categories get serialized. 719 for (; Cat; Cat = Cat->getNextClassCategoryRaw()) 720 (void)Writer.GetDeclRef(Cat); 721 } 722 } 723 724 Code = serialization::DECL_OBJC_INTERFACE; 725 } 726 727 void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) { 728 VisitFieldDecl(D); 729 // FIXME: stable encoding for @public/@private/@protected/@package 730 Record.push_back(D->getAccessControl()); 731 Record.push_back(D->getSynthesize()); 732 733 if (D->getDeclContext() == D->getLexicalDeclContext() && 734 !D->hasAttrs() && 735 !D->isImplicit() && 736 !D->isUsed(false) && 737 !D->isInvalidDecl() && 738 !D->isReferenced() && 739 !D->isModulePrivate() && 740 !D->getBitWidth() && 741 !D->hasExtInfo() && 742 D->getDeclName()) 743 AbbrevToUse = Writer.getDeclObjCIvarAbbrev(); 744 745 Code = serialization::DECL_OBJC_IVAR; 746 } 747 748 void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) { 749 VisitRedeclarable(D); 750 VisitObjCContainerDecl(D); 751 752 Record.push_back(D->isThisDeclarationADefinition()); 753 if (D->isThisDeclarationADefinition()) { 754 Record.push_back(D->protocol_size()); 755 for (const auto *I : D->protocols()) 756 Record.AddDeclRef(I); 757 for (const auto &PL : D->protocol_locs()) 758 Record.AddSourceLocation(PL); 759 } 760 761 Code = serialization::DECL_OBJC_PROTOCOL; 762 } 763 764 void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) { 765 VisitFieldDecl(D); 766 Code = serialization::DECL_OBJC_AT_DEFS_FIELD; 767 } 768 769 void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) { 770 VisitObjCContainerDecl(D); 771 Record.AddSourceLocation(D->getCategoryNameLoc()); 772 Record.AddSourceLocation(D->getIvarLBraceLoc()); 773 Record.AddSourceLocation(D->getIvarRBraceLoc()); 774 Record.AddDeclRef(D->getClassInterface()); 775 AddObjCTypeParamList(D->TypeParamList); 776 Record.push_back(D->protocol_size()); 777 for (const auto *I : D->protocols()) 778 Record.AddDeclRef(I); 779 for (const auto &PL : D->protocol_locs()) 780 Record.AddSourceLocation(PL); 781 Code = serialization::DECL_OBJC_CATEGORY; 782 } 783 784 void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) { 785 VisitNamedDecl(D); 786 Record.AddDeclRef(D->getClassInterface()); 787 Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS; 788 } 789 790 void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) { 791 VisitNamedDecl(D); 792 Record.AddSourceLocation(D->getAtLoc()); 793 Record.AddSourceLocation(D->getLParenLoc()); 794 Record.AddTypeRef(D->getType()); 795 Record.AddTypeSourceInfo(D->getTypeSourceInfo()); 796 // FIXME: stable encoding 797 Record.push_back((unsigned)D->getPropertyAttributes()); 798 Record.push_back((unsigned)D->getPropertyAttributesAsWritten()); 799 // FIXME: stable encoding 800 Record.push_back((unsigned)D->getPropertyImplementation()); 801 Record.AddDeclarationName(D->getGetterName()); 802 Record.AddSourceLocation(D->getGetterNameLoc()); 803 Record.AddDeclarationName(D->getSetterName()); 804 Record.AddSourceLocation(D->getSetterNameLoc()); 805 Record.AddDeclRef(D->getGetterMethodDecl()); 806 Record.AddDeclRef(D->getSetterMethodDecl()); 807 Record.AddDeclRef(D->getPropertyIvarDecl()); 808 Code = serialization::DECL_OBJC_PROPERTY; 809 } 810 811 void ASTDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) { 812 VisitObjCContainerDecl(D); 813 Record.AddDeclRef(D->getClassInterface()); 814 // Abstract class (no need to define a stable serialization::DECL code). 815 } 816 817 void ASTDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { 818 VisitObjCImplDecl(D); 819 Record.AddSourceLocation(D->getCategoryNameLoc()); 820 Code = serialization::DECL_OBJC_CATEGORY_IMPL; 821 } 822 823 void ASTDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { 824 VisitObjCImplDecl(D); 825 Record.AddDeclRef(D->getSuperClass()); 826 Record.AddSourceLocation(D->getSuperClassLoc()); 827 Record.AddSourceLocation(D->getIvarLBraceLoc()); 828 Record.AddSourceLocation(D->getIvarRBraceLoc()); 829 Record.push_back(D->hasNonZeroConstructors()); 830 Record.push_back(D->hasDestructors()); 831 Record.push_back(D->NumIvarInitializers); 832 if (D->NumIvarInitializers) 833 Record.AddCXXCtorInitializers( 834 llvm::makeArrayRef(D->init_begin(), D->init_end())); 835 Code = serialization::DECL_OBJC_IMPLEMENTATION; 836 } 837 838 void ASTDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) { 839 VisitDecl(D); 840 Record.AddSourceLocation(D->getLocStart()); 841 Record.AddDeclRef(D->getPropertyDecl()); 842 Record.AddDeclRef(D->getPropertyIvarDecl()); 843 Record.AddSourceLocation(D->getPropertyIvarDeclLoc()); 844 Record.AddStmt(D->getGetterCXXConstructor()); 845 Record.AddStmt(D->getSetterCXXAssignment()); 846 Code = serialization::DECL_OBJC_PROPERTY_IMPL; 847 } 848 849 void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) { 850 VisitDeclaratorDecl(D); 851 Record.push_back(D->isMutable()); 852 853 FieldDecl::InitStorageKind ISK = D->InitStorage.getInt(); 854 Record.push_back(ISK); 855 if (ISK == FieldDecl::ISK_CapturedVLAType) 856 Record.AddTypeRef(QualType(D->getCapturedVLAType(), 0)); 857 else if (ISK) 858 Record.AddStmt(D->getInClassInitializer()); 859 860 Record.AddStmt(D->getBitWidth()); 861 862 if (!D->getDeclName()) 863 Record.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D)); 864 865 if (D->getDeclContext() == D->getLexicalDeclContext() && 866 !D->hasAttrs() && 867 !D->isImplicit() && 868 !D->isUsed(false) && 869 !D->isInvalidDecl() && 870 !D->isReferenced() && 871 !D->isTopLevelDeclInObjCContainer() && 872 !D->isModulePrivate() && 873 !D->getBitWidth() && 874 !D->hasInClassInitializer() && 875 !D->hasCapturedVLAType() && 876 !D->hasExtInfo() && 877 !ObjCIvarDecl::classofKind(D->getKind()) && 878 !ObjCAtDefsFieldDecl::classofKind(D->getKind()) && 879 D->getDeclName()) 880 AbbrevToUse = Writer.getDeclFieldAbbrev(); 881 882 Code = serialization::DECL_FIELD; 883 } 884 885 void ASTDeclWriter::VisitMSPropertyDecl(MSPropertyDecl *D) { 886 VisitDeclaratorDecl(D); 887 Record.AddIdentifierRef(D->getGetterId()); 888 Record.AddIdentifierRef(D->getSetterId()); 889 Code = serialization::DECL_MS_PROPERTY; 890 } 891 892 void ASTDeclWriter::VisitIndirectFieldDecl(IndirectFieldDecl *D) { 893 VisitValueDecl(D); 894 Record.push_back(D->getChainingSize()); 895 896 for (const auto *P : D->chain()) 897 Record.AddDeclRef(P); 898 Code = serialization::DECL_INDIRECTFIELD; 899 } 900 901 void ASTDeclWriter::VisitVarDecl(VarDecl *D) { 902 VisitRedeclarable(D); 903 VisitDeclaratorDecl(D); 904 Record.push_back(D->getStorageClass()); 905 Record.push_back(D->getTSCSpec()); 906 Record.push_back(D->getInitStyle()); 907 if (!isa<ParmVarDecl>(D)) { 908 Record.push_back(D->isThisDeclarationADemotedDefinition()); 909 Record.push_back(D->isExceptionVariable()); 910 Record.push_back(D->isNRVOVariable()); 911 Record.push_back(D->isCXXForRangeDecl()); 912 Record.push_back(D->isARCPseudoStrong()); 913 Record.push_back(D->isInline()); 914 Record.push_back(D->isInlineSpecified()); 915 Record.push_back(D->isConstexpr()); 916 Record.push_back(D->isInitCapture()); 917 Record.push_back(D->isPreviousDeclInSameBlockScope()); 918 if (const auto *IPD = dyn_cast<ImplicitParamDecl>(D)) 919 Record.push_back(static_cast<unsigned>(IPD->getParameterKind())); 920 else 921 Record.push_back(0); 922 } 923 Record.push_back(D->getLinkageInternal()); 924 925 if (D->getInit()) { 926 Record.push_back(!D->isInitKnownICE() ? 1 : (D->isInitICE() ? 3 : 2)); 927 Record.AddStmt(D->getInit()); 928 } else { 929 Record.push_back(0); 930 } 931 932 if (D->getStorageDuration() == SD_Static) { 933 bool ModulesCodegen = false; 934 if (Writer.WritingModule && 935 !D->getDescribedVarTemplate() && !D->getMemberSpecializationInfo() && 936 !isa<VarTemplateSpecializationDecl>(D)) { 937 // When building a C++ Modules TS module interface unit, a strong 938 // definition in the module interface is provided by the compilation of 939 // that module interface unit, not by its users. (Inline variables are 940 // still emitted in module users.) 941 ModulesCodegen = 942 (Writer.WritingModule->Kind == Module::ModuleInterfaceUnit && 943 Writer.Context->GetGVALinkageForVariable(D) == GVA_StrongExternal); 944 } 945 Record.push_back(ModulesCodegen); 946 if (ModulesCodegen) 947 Writer.ModularCodegenDecls.push_back(Writer.GetDeclRef(D)); 948 } 949 950 enum { 951 VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization 952 }; 953 if (VarTemplateDecl *TemplD = D->getDescribedVarTemplate()) { 954 Record.push_back(VarTemplate); 955 Record.AddDeclRef(TemplD); 956 } else if (MemberSpecializationInfo *SpecInfo 957 = D->getMemberSpecializationInfo()) { 958 Record.push_back(StaticDataMemberSpecialization); 959 Record.AddDeclRef(SpecInfo->getInstantiatedFrom()); 960 Record.push_back(SpecInfo->getTemplateSpecializationKind()); 961 Record.AddSourceLocation(SpecInfo->getPointOfInstantiation()); 962 } else { 963 Record.push_back(VarNotTemplate); 964 } 965 966 if (D->getDeclContext() == D->getLexicalDeclContext() && 967 !D->hasAttrs() && 968 !D->isImplicit() && 969 !D->isUsed(false) && 970 !D->isInvalidDecl() && 971 !D->isReferenced() && 972 !D->isTopLevelDeclInObjCContainer() && 973 D->getAccess() == AS_none && 974 !D->isModulePrivate() && 975 !needsAnonymousDeclarationNumber(D) && 976 D->getDeclName().getNameKind() == DeclarationName::Identifier && 977 !D->hasExtInfo() && 978 D->getFirstDecl() == D->getMostRecentDecl() && 979 D->getKind() == Decl::Var && 980 !D->isInline() && 981 !D->isConstexpr() && 982 !D->isInitCapture() && 983 !D->isPreviousDeclInSameBlockScope() && 984 D->getStorageDuration() != SD_Static && 985 !D->getMemberSpecializationInfo()) 986 AbbrevToUse = Writer.getDeclVarAbbrev(); 987 988 Code = serialization::DECL_VAR; 989 } 990 991 void ASTDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) { 992 VisitVarDecl(D); 993 Code = serialization::DECL_IMPLICIT_PARAM; 994 } 995 996 void ASTDeclWriter::VisitParmVarDecl(ParmVarDecl *D) { 997 VisitVarDecl(D); 998 Record.push_back(D->isObjCMethodParameter()); 999 Record.push_back(D->getFunctionScopeDepth()); 1000 Record.push_back(D->getFunctionScopeIndex()); 1001 Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding 1002 Record.push_back(D->isKNRPromoted()); 1003 Record.push_back(D->hasInheritedDefaultArg()); 1004 Record.push_back(D->hasUninstantiatedDefaultArg()); 1005 if (D->hasUninstantiatedDefaultArg()) 1006 Record.AddStmt(D->getUninstantiatedDefaultArg()); 1007 Code = serialization::DECL_PARM_VAR; 1008 1009 assert(!D->isARCPseudoStrong()); // can be true of ImplicitParamDecl 1010 1011 // If the assumptions about the DECL_PARM_VAR abbrev are true, use it. Here 1012 // we dynamically check for the properties that we optimize for, but don't 1013 // know are true of all PARM_VAR_DECLs. 1014 if (D->getDeclContext() == D->getLexicalDeclContext() && 1015 !D->hasAttrs() && 1016 !D->hasExtInfo() && 1017 !D->isImplicit() && 1018 !D->isUsed(false) && 1019 !D->isInvalidDecl() && 1020 !D->isReferenced() && 1021 D->getAccess() == AS_none && 1022 !D->isModulePrivate() && 1023 D->getStorageClass() == 0 && 1024 D->getInitStyle() == VarDecl::CInit && // Can params have anything else? 1025 D->getFunctionScopeDepth() == 0 && 1026 D->getObjCDeclQualifier() == 0 && 1027 !D->isKNRPromoted() && 1028 !D->hasInheritedDefaultArg() && 1029 D->getInit() == nullptr && 1030 !D->hasUninstantiatedDefaultArg()) // No default expr. 1031 AbbrevToUse = Writer.getDeclParmVarAbbrev(); 1032 1033 // Check things we know are true of *every* PARM_VAR_DECL, which is more than 1034 // just us assuming it. 1035 assert(!D->getTSCSpec() && "PARM_VAR_DECL can't use TLS"); 1036 assert(!D->isThisDeclarationADemotedDefinition() 1037 && "PARM_VAR_DECL can't be demoted definition."); 1038 assert(D->getAccess() == AS_none && "PARM_VAR_DECL can't be public/private"); 1039 assert(!D->isExceptionVariable() && "PARM_VAR_DECL can't be exception var"); 1040 assert(D->getPreviousDecl() == nullptr && "PARM_VAR_DECL can't be redecl"); 1041 assert(!D->isStaticDataMember() && 1042 "PARM_VAR_DECL can't be static data member"); 1043 } 1044 1045 void ASTDeclWriter::VisitDecompositionDecl(DecompositionDecl *D) { 1046 // Record the number of bindings first to simplify deserialization. 1047 Record.push_back(D->bindings().size()); 1048 1049 VisitVarDecl(D); 1050 for (auto *B : D->bindings()) 1051 Record.AddDeclRef(B); 1052 Code = serialization::DECL_DECOMPOSITION; 1053 } 1054 1055 void ASTDeclWriter::VisitBindingDecl(BindingDecl *D) { 1056 VisitValueDecl(D); 1057 Record.AddStmt(D->getBinding()); 1058 Code = serialization::DECL_BINDING; 1059 } 1060 1061 void ASTDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) { 1062 VisitDecl(D); 1063 Record.AddStmt(D->getAsmString()); 1064 Record.AddSourceLocation(D->getRParenLoc()); 1065 Code = serialization::DECL_FILE_SCOPE_ASM; 1066 } 1067 1068 void ASTDeclWriter::VisitEmptyDecl(EmptyDecl *D) { 1069 VisitDecl(D); 1070 Code = serialization::DECL_EMPTY; 1071 } 1072 1073 void ASTDeclWriter::VisitBlockDecl(BlockDecl *D) { 1074 VisitDecl(D); 1075 Record.AddStmt(D->getBody()); 1076 Record.AddTypeSourceInfo(D->getSignatureAsWritten()); 1077 Record.push_back(D->param_size()); 1078 for (ParmVarDecl *P : D->parameters()) 1079 Record.AddDeclRef(P); 1080 Record.push_back(D->isVariadic()); 1081 Record.push_back(D->blockMissingReturnType()); 1082 Record.push_back(D->isConversionFromLambda()); 1083 Record.push_back(D->capturesCXXThis()); 1084 Record.push_back(D->getNumCaptures()); 1085 for (const auto &capture : D->captures()) { 1086 Record.AddDeclRef(capture.getVariable()); 1087 1088 unsigned flags = 0; 1089 if (capture.isByRef()) flags |= 1; 1090 if (capture.isNested()) flags |= 2; 1091 if (capture.hasCopyExpr()) flags |= 4; 1092 Record.push_back(flags); 1093 1094 if (capture.hasCopyExpr()) Record.AddStmt(capture.getCopyExpr()); 1095 } 1096 1097 Code = serialization::DECL_BLOCK; 1098 } 1099 1100 void ASTDeclWriter::VisitCapturedDecl(CapturedDecl *CD) { 1101 Record.push_back(CD->getNumParams()); 1102 VisitDecl(CD); 1103 Record.push_back(CD->getContextParamPosition()); 1104 Record.push_back(CD->isNothrow() ? 1 : 0); 1105 // Body is stored by VisitCapturedStmt. 1106 for (unsigned I = 0; I < CD->getNumParams(); ++I) 1107 Record.AddDeclRef(CD->getParam(I)); 1108 Code = serialization::DECL_CAPTURED; 1109 } 1110 1111 void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) { 1112 VisitDecl(D); 1113 Record.push_back(D->getLanguage()); 1114 Record.AddSourceLocation(D->getExternLoc()); 1115 Record.AddSourceLocation(D->getRBraceLoc()); 1116 Code = serialization::DECL_LINKAGE_SPEC; 1117 } 1118 1119 void ASTDeclWriter::VisitExportDecl(ExportDecl *D) { 1120 VisitDecl(D); 1121 Record.AddSourceLocation(D->getRBraceLoc()); 1122 Code = serialization::DECL_EXPORT; 1123 } 1124 1125 void ASTDeclWriter::VisitLabelDecl(LabelDecl *D) { 1126 VisitNamedDecl(D); 1127 Record.AddSourceLocation(D->getLocStart()); 1128 Code = serialization::DECL_LABEL; 1129 } 1130 1131 1132 void ASTDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) { 1133 VisitRedeclarable(D); 1134 VisitNamedDecl(D); 1135 Record.push_back(D->isInline()); 1136 Record.AddSourceLocation(D->getLocStart()); 1137 Record.AddSourceLocation(D->getRBraceLoc()); 1138 1139 if (D->isOriginalNamespace()) 1140 Record.AddDeclRef(D->getAnonymousNamespace()); 1141 Code = serialization::DECL_NAMESPACE; 1142 1143 if (Writer.hasChain() && D->isAnonymousNamespace() && 1144 D == D->getMostRecentDecl()) { 1145 // This is a most recent reopening of the anonymous namespace. If its parent 1146 // is in a previous PCH (or is the TU), mark that parent for update, because 1147 // the original namespace always points to the latest re-opening of its 1148 // anonymous namespace. 1149 Decl *Parent = cast<Decl>( 1150 D->getParent()->getRedeclContext()->getPrimaryContext()); 1151 if (Parent->isFromASTFile() || isa<TranslationUnitDecl>(Parent)) { 1152 Writer.DeclUpdates[Parent].push_back( 1153 ASTWriter::DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, D)); 1154 } 1155 } 1156 } 1157 1158 void ASTDeclWriter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { 1159 VisitRedeclarable(D); 1160 VisitNamedDecl(D); 1161 Record.AddSourceLocation(D->getNamespaceLoc()); 1162 Record.AddSourceLocation(D->getTargetNameLoc()); 1163 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1164 Record.AddDeclRef(D->getNamespace()); 1165 Code = serialization::DECL_NAMESPACE_ALIAS; 1166 } 1167 1168 void ASTDeclWriter::VisitUsingDecl(UsingDecl *D) { 1169 VisitNamedDecl(D); 1170 Record.AddSourceLocation(D->getUsingLoc()); 1171 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1172 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName()); 1173 Record.AddDeclRef(D->FirstUsingShadow.getPointer()); 1174 Record.push_back(D->hasTypename()); 1175 Record.AddDeclRef(Context.getInstantiatedFromUsingDecl(D)); 1176 Code = serialization::DECL_USING; 1177 } 1178 1179 void ASTDeclWriter::VisitUsingPackDecl(UsingPackDecl *D) { 1180 Record.push_back(D->NumExpansions); 1181 VisitNamedDecl(D); 1182 Record.AddDeclRef(D->getInstantiatedFromUsingDecl()); 1183 for (auto *E : D->expansions()) 1184 Record.AddDeclRef(E); 1185 Code = serialization::DECL_USING_PACK; 1186 } 1187 1188 void ASTDeclWriter::VisitUsingShadowDecl(UsingShadowDecl *D) { 1189 VisitRedeclarable(D); 1190 VisitNamedDecl(D); 1191 Record.AddDeclRef(D->getTargetDecl()); 1192 Record.AddDeclRef(D->UsingOrNextShadow); 1193 Record.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D)); 1194 Code = serialization::DECL_USING_SHADOW; 1195 } 1196 1197 void ASTDeclWriter::VisitConstructorUsingShadowDecl( 1198 ConstructorUsingShadowDecl *D) { 1199 VisitUsingShadowDecl(D); 1200 Record.AddDeclRef(D->NominatedBaseClassShadowDecl); 1201 Record.AddDeclRef(D->ConstructedBaseClassShadowDecl); 1202 Record.push_back(D->IsVirtual); 1203 Code = serialization::DECL_CONSTRUCTOR_USING_SHADOW; 1204 } 1205 1206 void ASTDeclWriter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { 1207 VisitNamedDecl(D); 1208 Record.AddSourceLocation(D->getUsingLoc()); 1209 Record.AddSourceLocation(D->getNamespaceKeyLocation()); 1210 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1211 Record.AddDeclRef(D->getNominatedNamespace()); 1212 Record.AddDeclRef(dyn_cast<Decl>(D->getCommonAncestor())); 1213 Code = serialization::DECL_USING_DIRECTIVE; 1214 } 1215 1216 void ASTDeclWriter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) { 1217 VisitValueDecl(D); 1218 Record.AddSourceLocation(D->getUsingLoc()); 1219 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1220 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName()); 1221 Record.AddSourceLocation(D->getEllipsisLoc()); 1222 Code = serialization::DECL_UNRESOLVED_USING_VALUE; 1223 } 1224 1225 void ASTDeclWriter::VisitUnresolvedUsingTypenameDecl( 1226 UnresolvedUsingTypenameDecl *D) { 1227 VisitTypeDecl(D); 1228 Record.AddSourceLocation(D->getTypenameLoc()); 1229 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1230 Record.AddSourceLocation(D->getEllipsisLoc()); 1231 Code = serialization::DECL_UNRESOLVED_USING_TYPENAME; 1232 } 1233 1234 void ASTDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) { 1235 VisitRecordDecl(D); 1236 1237 enum { 1238 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization 1239 }; 1240 if (ClassTemplateDecl *TemplD = D->getDescribedClassTemplate()) { 1241 Record.push_back(CXXRecTemplate); 1242 Record.AddDeclRef(TemplD); 1243 } else if (MemberSpecializationInfo *MSInfo 1244 = D->getMemberSpecializationInfo()) { 1245 Record.push_back(CXXRecMemberSpecialization); 1246 Record.AddDeclRef(MSInfo->getInstantiatedFrom()); 1247 Record.push_back(MSInfo->getTemplateSpecializationKind()); 1248 Record.AddSourceLocation(MSInfo->getPointOfInstantiation()); 1249 } else { 1250 Record.push_back(CXXRecNotTemplate); 1251 } 1252 1253 Record.push_back(D->isThisDeclarationADefinition()); 1254 if (D->isThisDeclarationADefinition()) 1255 Record.AddCXXDefinitionData(D); 1256 1257 // Store (what we currently believe to be) the key function to avoid 1258 // deserializing every method so we can compute it. 1259 if (D->IsCompleteDefinition) 1260 Record.AddDeclRef(Context.getCurrentKeyFunction(D)); 1261 1262 Code = serialization::DECL_CXX_RECORD; 1263 } 1264 1265 void ASTDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) { 1266 VisitFunctionDecl(D); 1267 if (D->isCanonicalDecl()) { 1268 Record.push_back(D->size_overridden_methods()); 1269 for (CXXMethodDecl::method_iterator 1270 I = D->begin_overridden_methods(), E = D->end_overridden_methods(); 1271 I != E; ++I) 1272 Record.AddDeclRef(*I); 1273 } else { 1274 // We only need to record overridden methods once for the canonical decl. 1275 Record.push_back(0); 1276 } 1277 1278 if (D->getDeclContext() == D->getLexicalDeclContext() && 1279 D->getFirstDecl() == D->getMostRecentDecl() && 1280 !D->isInvalidDecl() && 1281 !D->hasAttrs() && 1282 !D->isTopLevelDeclInObjCContainer() && 1283 D->getDeclName().getNameKind() == DeclarationName::Identifier && 1284 !D->hasExtInfo() && 1285 !D->hasInheritedPrototype() && 1286 D->hasWrittenPrototype()) 1287 AbbrevToUse = Writer.getDeclCXXMethodAbbrev(); 1288 1289 Code = serialization::DECL_CXX_METHOD; 1290 } 1291 1292 void ASTDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) { 1293 if (auto Inherited = D->getInheritedConstructor()) { 1294 Record.AddDeclRef(Inherited.getShadowDecl()); 1295 Record.AddDeclRef(Inherited.getConstructor()); 1296 Code = serialization::DECL_CXX_INHERITED_CONSTRUCTOR; 1297 } else { 1298 Code = serialization::DECL_CXX_CONSTRUCTOR; 1299 } 1300 1301 VisitCXXMethodDecl(D); 1302 1303 Code = D->isInheritingConstructor() 1304 ? serialization::DECL_CXX_INHERITED_CONSTRUCTOR 1305 : serialization::DECL_CXX_CONSTRUCTOR; 1306 } 1307 1308 void ASTDeclWriter::VisitCXXDestructorDecl(CXXDestructorDecl *D) { 1309 VisitCXXMethodDecl(D); 1310 1311 Record.AddDeclRef(D->getOperatorDelete()); 1312 if (D->getOperatorDelete()) 1313 Record.AddStmt(D->getOperatorDeleteThisArg()); 1314 1315 Code = serialization::DECL_CXX_DESTRUCTOR; 1316 } 1317 1318 void ASTDeclWriter::VisitCXXConversionDecl(CXXConversionDecl *D) { 1319 VisitCXXMethodDecl(D); 1320 Code = serialization::DECL_CXX_CONVERSION; 1321 } 1322 1323 void ASTDeclWriter::VisitImportDecl(ImportDecl *D) { 1324 VisitDecl(D); 1325 Record.push_back(Writer.getSubmoduleID(D->getImportedModule())); 1326 ArrayRef<SourceLocation> IdentifierLocs = D->getIdentifierLocs(); 1327 Record.push_back(!IdentifierLocs.empty()); 1328 if (IdentifierLocs.empty()) { 1329 Record.AddSourceLocation(D->getLocEnd()); 1330 Record.push_back(1); 1331 } else { 1332 for (unsigned I = 0, N = IdentifierLocs.size(); I != N; ++I) 1333 Record.AddSourceLocation(IdentifierLocs[I]); 1334 Record.push_back(IdentifierLocs.size()); 1335 } 1336 // Note: the number of source locations must always be the last element in 1337 // the record. 1338 Code = serialization::DECL_IMPORT; 1339 } 1340 1341 void ASTDeclWriter::VisitAccessSpecDecl(AccessSpecDecl *D) { 1342 VisitDecl(D); 1343 Record.AddSourceLocation(D->getColonLoc()); 1344 Code = serialization::DECL_ACCESS_SPEC; 1345 } 1346 1347 void ASTDeclWriter::VisitFriendDecl(FriendDecl *D) { 1348 // Record the number of friend type template parameter lists here 1349 // so as to simplify memory allocation during deserialization. 1350 Record.push_back(D->NumTPLists); 1351 VisitDecl(D); 1352 bool hasFriendDecl = D->Friend.is<NamedDecl*>(); 1353 Record.push_back(hasFriendDecl); 1354 if (hasFriendDecl) 1355 Record.AddDeclRef(D->getFriendDecl()); 1356 else 1357 Record.AddTypeSourceInfo(D->getFriendType()); 1358 for (unsigned i = 0; i < D->NumTPLists; ++i) 1359 Record.AddTemplateParameterList(D->getFriendTypeTemplateParameterList(i)); 1360 Record.AddDeclRef(D->getNextFriend()); 1361 Record.push_back(D->UnsupportedFriend); 1362 Record.AddSourceLocation(D->FriendLoc); 1363 Code = serialization::DECL_FRIEND; 1364 } 1365 1366 void ASTDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) { 1367 VisitDecl(D); 1368 Record.push_back(D->getNumTemplateParameters()); 1369 for (unsigned i = 0, e = D->getNumTemplateParameters(); i != e; ++i) 1370 Record.AddTemplateParameterList(D->getTemplateParameterList(i)); 1371 Record.push_back(D->getFriendDecl() != nullptr); 1372 if (D->getFriendDecl()) 1373 Record.AddDeclRef(D->getFriendDecl()); 1374 else 1375 Record.AddTypeSourceInfo(D->getFriendType()); 1376 Record.AddSourceLocation(D->getFriendLoc()); 1377 Code = serialization::DECL_FRIEND_TEMPLATE; 1378 } 1379 1380 void ASTDeclWriter::VisitTemplateDecl(TemplateDecl *D) { 1381 VisitNamedDecl(D); 1382 1383 Record.AddDeclRef(D->getTemplatedDecl()); 1384 Record.AddTemplateParameterList(D->getTemplateParameters()); 1385 } 1386 1387 void ASTDeclWriter::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) { 1388 VisitRedeclarable(D); 1389 1390 // Emit data to initialize CommonOrPrev before VisitTemplateDecl so that 1391 // getCommonPtr() can be used while this is still initializing. 1392 if (D->isFirstDecl()) { 1393 // This declaration owns the 'common' pointer, so serialize that data now. 1394 Record.AddDeclRef(D->getInstantiatedFromMemberTemplate()); 1395 if (D->getInstantiatedFromMemberTemplate()) 1396 Record.push_back(D->isMemberSpecialization()); 1397 } 1398 1399 VisitTemplateDecl(D); 1400 Record.push_back(D->getIdentifierNamespace()); 1401 } 1402 1403 void ASTDeclWriter::VisitClassTemplateDecl(ClassTemplateDecl *D) { 1404 VisitRedeclarableTemplateDecl(D); 1405 1406 if (D->isFirstDecl()) 1407 AddTemplateSpecializations(D); 1408 Code = serialization::DECL_CLASS_TEMPLATE; 1409 } 1410 1411 void ASTDeclWriter::VisitClassTemplateSpecializationDecl( 1412 ClassTemplateSpecializationDecl *D) { 1413 RegisterTemplateSpecialization(D->getSpecializedTemplate(), D); 1414 1415 VisitCXXRecordDecl(D); 1416 1417 llvm::PointerUnion<ClassTemplateDecl *, 1418 ClassTemplatePartialSpecializationDecl *> InstFrom 1419 = D->getSpecializedTemplateOrPartial(); 1420 if (Decl *InstFromD = InstFrom.dyn_cast<ClassTemplateDecl *>()) { 1421 Record.AddDeclRef(InstFromD); 1422 } else { 1423 Record.AddDeclRef(InstFrom.get<ClassTemplatePartialSpecializationDecl *>()); 1424 Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs()); 1425 } 1426 1427 Record.AddTemplateArgumentList(&D->getTemplateArgs()); 1428 Record.AddSourceLocation(D->getPointOfInstantiation()); 1429 Record.push_back(D->getSpecializationKind()); 1430 Record.push_back(D->isCanonicalDecl()); 1431 1432 if (D->isCanonicalDecl()) { 1433 // When reading, we'll add it to the folding set of the following template. 1434 Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl()); 1435 } 1436 1437 // Explicit info. 1438 Record.AddTypeSourceInfo(D->getTypeAsWritten()); 1439 if (D->getTypeAsWritten()) { 1440 Record.AddSourceLocation(D->getExternLoc()); 1441 Record.AddSourceLocation(D->getTemplateKeywordLoc()); 1442 } 1443 1444 Code = serialization::DECL_CLASS_TEMPLATE_SPECIALIZATION; 1445 } 1446 1447 void ASTDeclWriter::VisitClassTemplatePartialSpecializationDecl( 1448 ClassTemplatePartialSpecializationDecl *D) { 1449 VisitClassTemplateSpecializationDecl(D); 1450 1451 Record.AddTemplateParameterList(D->getTemplateParameters()); 1452 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten()); 1453 1454 // These are read/set from/to the first declaration. 1455 if (D->getPreviousDecl() == nullptr) { 1456 Record.AddDeclRef(D->getInstantiatedFromMember()); 1457 Record.push_back(D->isMemberSpecialization()); 1458 } 1459 1460 Code = serialization::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION; 1461 } 1462 1463 void ASTDeclWriter::VisitVarTemplateDecl(VarTemplateDecl *D) { 1464 VisitRedeclarableTemplateDecl(D); 1465 1466 if (D->isFirstDecl()) 1467 AddTemplateSpecializations(D); 1468 Code = serialization::DECL_VAR_TEMPLATE; 1469 } 1470 1471 void ASTDeclWriter::VisitVarTemplateSpecializationDecl( 1472 VarTemplateSpecializationDecl *D) { 1473 RegisterTemplateSpecialization(D->getSpecializedTemplate(), D); 1474 1475 VisitVarDecl(D); 1476 1477 llvm::PointerUnion<VarTemplateDecl *, VarTemplatePartialSpecializationDecl *> 1478 InstFrom = D->getSpecializedTemplateOrPartial(); 1479 if (Decl *InstFromD = InstFrom.dyn_cast<VarTemplateDecl *>()) { 1480 Record.AddDeclRef(InstFromD); 1481 } else { 1482 Record.AddDeclRef(InstFrom.get<VarTemplatePartialSpecializationDecl *>()); 1483 Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs()); 1484 } 1485 1486 // Explicit info. 1487 Record.AddTypeSourceInfo(D->getTypeAsWritten()); 1488 if (D->getTypeAsWritten()) { 1489 Record.AddSourceLocation(D->getExternLoc()); 1490 Record.AddSourceLocation(D->getTemplateKeywordLoc()); 1491 } 1492 1493 Record.AddTemplateArgumentList(&D->getTemplateArgs()); 1494 Record.AddSourceLocation(D->getPointOfInstantiation()); 1495 Record.push_back(D->getSpecializationKind()); 1496 Record.push_back(D->isCanonicalDecl()); 1497 1498 if (D->isCanonicalDecl()) { 1499 // When reading, we'll add it to the folding set of the following template. 1500 Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl()); 1501 } 1502 1503 Code = serialization::DECL_VAR_TEMPLATE_SPECIALIZATION; 1504 } 1505 1506 void ASTDeclWriter::VisitVarTemplatePartialSpecializationDecl( 1507 VarTemplatePartialSpecializationDecl *D) { 1508 VisitVarTemplateSpecializationDecl(D); 1509 1510 Record.AddTemplateParameterList(D->getTemplateParameters()); 1511 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten()); 1512 1513 // These are read/set from/to the first declaration. 1514 if (D->getPreviousDecl() == nullptr) { 1515 Record.AddDeclRef(D->getInstantiatedFromMember()); 1516 Record.push_back(D->isMemberSpecialization()); 1517 } 1518 1519 Code = serialization::DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION; 1520 } 1521 1522 void ASTDeclWriter::VisitClassScopeFunctionSpecializationDecl( 1523 ClassScopeFunctionSpecializationDecl *D) { 1524 VisitDecl(D); 1525 Record.AddDeclRef(D->getSpecialization()); 1526 Code = serialization::DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION; 1527 } 1528 1529 1530 void ASTDeclWriter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) { 1531 VisitRedeclarableTemplateDecl(D); 1532 1533 if (D->isFirstDecl()) 1534 AddTemplateSpecializations(D); 1535 Code = serialization::DECL_FUNCTION_TEMPLATE; 1536 } 1537 1538 void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) { 1539 VisitTypeDecl(D); 1540 1541 Record.push_back(D->wasDeclaredWithTypename()); 1542 1543 bool OwnsDefaultArg = D->hasDefaultArgument() && 1544 !D->defaultArgumentWasInherited(); 1545 Record.push_back(OwnsDefaultArg); 1546 if (OwnsDefaultArg) 1547 Record.AddTypeSourceInfo(D->getDefaultArgumentInfo()); 1548 1549 Code = serialization::DECL_TEMPLATE_TYPE_PARM; 1550 } 1551 1552 void ASTDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { 1553 // For an expanded parameter pack, record the number of expansion types here 1554 // so that it's easier for deserialization to allocate the right amount of 1555 // memory. 1556 if (D->isExpandedParameterPack()) 1557 Record.push_back(D->getNumExpansionTypes()); 1558 1559 VisitDeclaratorDecl(D); 1560 // TemplateParmPosition. 1561 Record.push_back(D->getDepth()); 1562 Record.push_back(D->getPosition()); 1563 1564 if (D->isExpandedParameterPack()) { 1565 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) { 1566 Record.AddTypeRef(D->getExpansionType(I)); 1567 Record.AddTypeSourceInfo(D->getExpansionTypeSourceInfo(I)); 1568 } 1569 1570 Code = serialization::DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK; 1571 } else { 1572 // Rest of NonTypeTemplateParmDecl. 1573 Record.push_back(D->isParameterPack()); 1574 bool OwnsDefaultArg = D->hasDefaultArgument() && 1575 !D->defaultArgumentWasInherited(); 1576 Record.push_back(OwnsDefaultArg); 1577 if (OwnsDefaultArg) 1578 Record.AddStmt(D->getDefaultArgument()); 1579 Code = serialization::DECL_NON_TYPE_TEMPLATE_PARM; 1580 } 1581 } 1582 1583 void ASTDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) { 1584 // For an expanded parameter pack, record the number of expansion types here 1585 // so that it's easier for deserialization to allocate the right amount of 1586 // memory. 1587 if (D->isExpandedParameterPack()) 1588 Record.push_back(D->getNumExpansionTemplateParameters()); 1589 1590 VisitTemplateDecl(D); 1591 // TemplateParmPosition. 1592 Record.push_back(D->getDepth()); 1593 Record.push_back(D->getPosition()); 1594 1595 if (D->isExpandedParameterPack()) { 1596 for (unsigned I = 0, N = D->getNumExpansionTemplateParameters(); 1597 I != N; ++I) 1598 Record.AddTemplateParameterList(D->getExpansionTemplateParameters(I)); 1599 Code = serialization::DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK; 1600 } else { 1601 // Rest of TemplateTemplateParmDecl. 1602 Record.push_back(D->isParameterPack()); 1603 bool OwnsDefaultArg = D->hasDefaultArgument() && 1604 !D->defaultArgumentWasInherited(); 1605 Record.push_back(OwnsDefaultArg); 1606 if (OwnsDefaultArg) 1607 Record.AddTemplateArgumentLoc(D->getDefaultArgument()); 1608 Code = serialization::DECL_TEMPLATE_TEMPLATE_PARM; 1609 } 1610 } 1611 1612 void ASTDeclWriter::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) { 1613 VisitRedeclarableTemplateDecl(D); 1614 Code = serialization::DECL_TYPE_ALIAS_TEMPLATE; 1615 } 1616 1617 void ASTDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) { 1618 VisitDecl(D); 1619 Record.AddStmt(D->getAssertExpr()); 1620 Record.push_back(D->isFailed()); 1621 Record.AddStmt(D->getMessage()); 1622 Record.AddSourceLocation(D->getRParenLoc()); 1623 Code = serialization::DECL_STATIC_ASSERT; 1624 } 1625 1626 /// \brief Emit the DeclContext part of a declaration context decl. 1627 void ASTDeclWriter::VisitDeclContext(DeclContext *DC) { 1628 Record.AddOffset(Writer.WriteDeclContextLexicalBlock(Context, DC)); 1629 Record.AddOffset(Writer.WriteDeclContextVisibleBlock(Context, DC)); 1630 } 1631 1632 const Decl *ASTWriter::getFirstLocalDecl(const Decl *D) { 1633 assert(IsLocalDecl(D) && "expected a local declaration"); 1634 1635 const Decl *Canon = D->getCanonicalDecl(); 1636 if (IsLocalDecl(Canon)) 1637 return Canon; 1638 1639 const Decl *&CacheEntry = FirstLocalDeclCache[Canon]; 1640 if (CacheEntry) 1641 return CacheEntry; 1642 1643 for (const Decl *Redecl = D; Redecl; Redecl = Redecl->getPreviousDecl()) 1644 if (IsLocalDecl(Redecl)) 1645 D = Redecl; 1646 return CacheEntry = D; 1647 } 1648 1649 template <typename T> 1650 void ASTDeclWriter::VisitRedeclarable(Redeclarable<T> *D) { 1651 T *First = D->getFirstDecl(); 1652 T *MostRecent = First->getMostRecentDecl(); 1653 T *DAsT = static_cast<T *>(D); 1654 if (MostRecent != First) { 1655 assert(isRedeclarableDeclKind(DAsT->getKind()) && 1656 "Not considered redeclarable?"); 1657 1658 Record.AddDeclRef(First); 1659 1660 // Write out a list of local redeclarations of this declaration if it's the 1661 // first local declaration in the chain. 1662 const Decl *FirstLocal = Writer.getFirstLocalDecl(DAsT); 1663 if (DAsT == FirstLocal) { 1664 // Emit a list of all imported first declarations so that we can be sure 1665 // that all redeclarations visible to this module are before D in the 1666 // redecl chain. 1667 unsigned I = Record.size(); 1668 Record.push_back(0); 1669 if (Writer.Chain) 1670 AddFirstDeclFromEachModule(DAsT, /*IncludeLocal*/false); 1671 // This is the number of imported first declarations + 1. 1672 Record[I] = Record.size() - I; 1673 1674 // Collect the set of local redeclarations of this declaration, from 1675 // newest to oldest. 1676 ASTWriter::RecordData LocalRedecls; 1677 ASTRecordWriter LocalRedeclWriter(Record, LocalRedecls); 1678 for (const Decl *Prev = FirstLocal->getMostRecentDecl(); 1679 Prev != FirstLocal; Prev = Prev->getPreviousDecl()) 1680 if (!Prev->isFromASTFile()) 1681 LocalRedeclWriter.AddDeclRef(Prev); 1682 1683 // If we have any redecls, write them now as a separate record preceding 1684 // the declaration itself. 1685 if (LocalRedecls.empty()) 1686 Record.push_back(0); 1687 else 1688 Record.AddOffset(LocalRedeclWriter.Emit(LOCAL_REDECLARATIONS)); 1689 } else { 1690 Record.push_back(0); 1691 Record.AddDeclRef(FirstLocal); 1692 } 1693 1694 // Make sure that we serialize both the previous and the most-recent 1695 // declarations, which (transitively) ensures that all declarations in the 1696 // chain get serialized. 1697 // 1698 // FIXME: This is not correct; when we reach an imported declaration we 1699 // won't emit its previous declaration. 1700 (void)Writer.GetDeclRef(D->getPreviousDecl()); 1701 (void)Writer.GetDeclRef(MostRecent); 1702 } else { 1703 // We use the sentinel value 0 to indicate an only declaration. 1704 Record.push_back(0); 1705 } 1706 } 1707 1708 void ASTDeclWriter::VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D) { 1709 Record.push_back(D->varlist_size()); 1710 VisitDecl(D); 1711 for (auto *I : D->varlists()) 1712 Record.AddStmt(I); 1713 Code = serialization::DECL_OMP_THREADPRIVATE; 1714 } 1715 1716 void ASTDeclWriter::VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D) { 1717 VisitValueDecl(D); 1718 Record.AddSourceLocation(D->getLocStart()); 1719 Record.AddStmt(D->getCombiner()); 1720 Record.AddStmt(D->getInitializer()); 1721 Record.push_back(D->getInitializerKind()); 1722 Record.AddDeclRef(D->getPrevDeclInScope()); 1723 Code = serialization::DECL_OMP_DECLARE_REDUCTION; 1724 } 1725 1726 void ASTDeclWriter::VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D) { 1727 VisitVarDecl(D); 1728 Code = serialization::DECL_OMP_CAPTUREDEXPR; 1729 } 1730 1731 //===----------------------------------------------------------------------===// 1732 // ASTWriter Implementation 1733 //===----------------------------------------------------------------------===// 1734 1735 void ASTWriter::WriteDeclAbbrevs() { 1736 using namespace llvm; 1737 1738 std::shared_ptr<BitCodeAbbrev> Abv; 1739 1740 // Abbreviation for DECL_FIELD 1741 Abv = std::make_shared<BitCodeAbbrev>(); 1742 Abv->Add(BitCodeAbbrevOp(serialization::DECL_FIELD)); 1743 // Decl 1744 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1745 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1746 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1747 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1748 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1749 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1750 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1751 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1752 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier 1753 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1754 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1755 // NamedDecl 1756 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1757 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1758 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1759 // ValueDecl 1760 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1761 // DeclaratorDecl 1762 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1763 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1764 // FieldDecl 1765 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 1766 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle 1767 // Type Source Info 1768 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1769 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1770 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1771 DeclFieldAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1772 1773 // Abbreviation for DECL_OBJC_IVAR 1774 Abv = std::make_shared<BitCodeAbbrev>(); 1775 Abv->Add(BitCodeAbbrevOp(serialization::DECL_OBJC_IVAR)); 1776 // Decl 1777 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1778 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1779 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1780 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1781 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1782 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1783 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1784 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1785 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier 1786 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1787 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1788 // NamedDecl 1789 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1790 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1791 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1792 // ValueDecl 1793 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1794 // DeclaratorDecl 1795 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1796 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1797 // FieldDecl 1798 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 1799 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle 1800 // ObjC Ivar 1801 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getAccessControl 1802 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getSynthesize 1803 // Type Source Info 1804 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1805 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1806 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1807 DeclObjCIvarAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1808 1809 // Abbreviation for DECL_ENUM 1810 Abv = std::make_shared<BitCodeAbbrev>(); 1811 Abv->Add(BitCodeAbbrevOp(serialization::DECL_ENUM)); 1812 // Redeclarable 1813 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1814 // Decl 1815 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1816 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1817 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1818 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1819 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1820 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1821 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1822 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1823 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1824 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1825 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1826 // NamedDecl 1827 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1828 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1829 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1830 // TypeDecl 1831 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1832 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1833 // TagDecl 1834 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 1835 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind 1836 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition 1837 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator 1838 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding 1839 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired 1840 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1841 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1842 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind 1843 // EnumDecl 1844 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // AddTypeRef 1845 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IntegerType 1846 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getPromotionType 1847 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumPositiveBits 1848 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumNegativeBits 1849 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScoped 1850 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScopedUsingClassTag 1851 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isFixed 1852 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InstantiatedMembEnum 1853 // DC 1854 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 1855 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 1856 DeclEnumAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1857 1858 // Abbreviation for DECL_RECORD 1859 Abv = std::make_shared<BitCodeAbbrev>(); 1860 Abv->Add(BitCodeAbbrevOp(serialization::DECL_RECORD)); 1861 // Redeclarable 1862 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1863 // Decl 1864 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1865 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1866 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1867 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1868 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1869 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1870 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1871 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1872 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1873 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1874 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1875 // NamedDecl 1876 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1877 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1878 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1879 // TypeDecl 1880 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1881 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1882 // TagDecl 1883 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 1884 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind 1885 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition 1886 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator 1887 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding 1888 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired 1889 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1890 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1891 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind 1892 // RecordDecl 1893 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // FlexibleArrayMember 1894 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // AnonymousStructUnion 1895 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasObjectMember 1896 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasVolatileMember 1897 // DC 1898 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 1899 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 1900 DeclRecordAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1901 1902 // Abbreviation for DECL_PARM_VAR 1903 Abv = std::make_shared<BitCodeAbbrev>(); 1904 Abv->Add(BitCodeAbbrevOp(serialization::DECL_PARM_VAR)); 1905 // Redeclarable 1906 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1907 // Decl 1908 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1909 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1910 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1911 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1912 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1913 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1914 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1915 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1916 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1917 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1918 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1919 // NamedDecl 1920 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1921 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1922 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1923 // ValueDecl 1924 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1925 // DeclaratorDecl 1926 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1927 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1928 // VarDecl 1929 Abv->Add(BitCodeAbbrevOp(0)); // SClass 1930 Abv->Add(BitCodeAbbrevOp(0)); // TSCSpec 1931 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle 1932 Abv->Add(BitCodeAbbrevOp(0)); // Linkage 1933 Abv->Add(BitCodeAbbrevOp(0)); // HasInit 1934 Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo 1935 // ParmVarDecl 1936 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsObjCMethodParameter 1937 Abv->Add(BitCodeAbbrevOp(0)); // ScopeDepth 1938 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ScopeIndex 1939 Abv->Add(BitCodeAbbrevOp(0)); // ObjCDeclQualifier 1940 Abv->Add(BitCodeAbbrevOp(0)); // KNRPromoted 1941 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedDefaultArg 1942 Abv->Add(BitCodeAbbrevOp(0)); // HasUninstantiatedDefaultArg 1943 // Type Source Info 1944 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1945 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1946 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1947 DeclParmVarAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1948 1949 // Abbreviation for DECL_TYPEDEF 1950 Abv = std::make_shared<BitCodeAbbrev>(); 1951 Abv->Add(BitCodeAbbrevOp(serialization::DECL_TYPEDEF)); 1952 // Redeclarable 1953 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1954 // Decl 1955 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1956 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1957 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1958 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1959 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1960 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isUsed 1961 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isReferenced 1962 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1963 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // C++ AccessSpecifier 1964 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1965 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1966 // NamedDecl 1967 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1968 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1969 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1970 // TypeDecl 1971 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1972 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1973 // TypedefDecl 1974 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1975 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1976 DeclTypedefAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1977 1978 // Abbreviation for DECL_VAR 1979 Abv = std::make_shared<BitCodeAbbrev>(); 1980 Abv->Add(BitCodeAbbrevOp(serialization::DECL_VAR)); 1981 // Redeclarable 1982 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1983 // Decl 1984 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1985 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1986 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1987 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1988 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1989 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1990 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1991 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1992 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1993 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1994 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1995 // NamedDecl 1996 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1997 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1998 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1999 // ValueDecl 2000 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2001 // DeclaratorDecl 2002 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 2003 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 2004 // VarDecl 2005 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // SClass 2006 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // TSCSpec 2007 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // InitStyle 2008 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsThisDeclarationADemotedDefinition 2009 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isExceptionVariable 2010 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isNRVOVariable 2011 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCXXForRangeDecl 2012 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isARCPseudoStrong 2013 Abv->Add(BitCodeAbbrevOp(0)); // isInline 2014 Abv->Add(BitCodeAbbrevOp(0)); // isInlineSpecified 2015 Abv->Add(BitCodeAbbrevOp(0)); // isConstexpr 2016 Abv->Add(BitCodeAbbrevOp(0)); // isInitCapture 2017 Abv->Add(BitCodeAbbrevOp(0)); // isPrevDeclInSameScope 2018 Abv->Add(BitCodeAbbrevOp(0)); // ImplicitParamKind 2019 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage 2020 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // IsInitICE (local) 2021 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // VarKind (local enum) 2022 // Type Source Info 2023 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 2024 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 2025 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 2026 DeclVarAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2027 2028 // Abbreviation for DECL_CXX_METHOD 2029 Abv = std::make_shared<BitCodeAbbrev>(); 2030 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CXX_METHOD)); 2031 // RedeclarableDecl 2032 Abv->Add(BitCodeAbbrevOp(0)); // CanonicalDecl 2033 // Decl 2034 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 2035 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 2036 Abv->Add(BitCodeAbbrevOp(0)); // Invalid 2037 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 2038 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Implicit 2039 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Used 2040 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Referenced 2041 Abv->Add(BitCodeAbbrevOp(0)); // InObjCContainer 2042 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Access 2043 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModulePrivate 2044 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2045 // NamedDecl 2046 Abv->Add(BitCodeAbbrevOp(DeclarationName::Identifier)); // NameKind 2047 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Identifier 2048 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2049 // ValueDecl 2050 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2051 // DeclaratorDecl 2052 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerLocStart 2053 Abv->Add(BitCodeAbbrevOp(0)); // HasExtInfo 2054 // FunctionDecl 2055 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 11)); // IDNS 2056 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // StorageClass 2057 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Inline 2058 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InlineSpecified 2059 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ExplicitSpecified 2060 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // VirtualAsWritten 2061 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Pure 2062 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedProto 2063 Abv->Add(BitCodeAbbrevOp(1)); // HasWrittenProto 2064 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Deleted 2065 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Trivial 2066 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Defaulted 2067 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ExplicitlyDefaulted 2068 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ImplicitReturnZero 2069 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Constexpr 2070 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // UsesSEHTry 2071 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // SkippedBody 2072 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // LateParsed 2073 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage 2074 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LocEnd 2075 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // TemplateKind 2076 // This Array slurps the rest of the record. Fortunately we want to encode 2077 // (nearly) all the remaining (variable number of) fields in the same way. 2078 // 2079 // This is the function template information if any, then 2080 // NumParams and Params[] from FunctionDecl, and 2081 // NumOverriddenMethods, OverriddenMethods[] from CXXMethodDecl. 2082 // 2083 // Add an AbbrevOp for 'size then elements' and use it here. 2084 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 2085 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 2086 DeclCXXMethodAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2087 2088 // Abbreviation for EXPR_DECL_REF 2089 Abv = std::make_shared<BitCodeAbbrev>(); 2090 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_DECL_REF)); 2091 //Stmt 2092 //Expr 2093 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2094 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 2095 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 2096 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 2097 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 2098 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 2099 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 2100 //DeclRefExpr 2101 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HasQualifier 2102 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //GetDeclFound 2103 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ExplicitTemplateArgs 2104 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HadMultipleCandidates 2105 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2106 1)); // RefersToEnclosingVariableOrCapture 2107 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclRef 2108 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 2109 DeclRefExprAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2110 2111 // Abbreviation for EXPR_INTEGER_LITERAL 2112 Abv = std::make_shared<BitCodeAbbrev>(); 2113 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_INTEGER_LITERAL)); 2114 //Stmt 2115 //Expr 2116 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2117 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 2118 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 2119 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 2120 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 2121 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 2122 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 2123 //Integer Literal 2124 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 2125 Abv->Add(BitCodeAbbrevOp(32)); // Bit Width 2126 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Value 2127 IntegerLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2128 2129 // Abbreviation for EXPR_CHARACTER_LITERAL 2130 Abv = std::make_shared<BitCodeAbbrev>(); 2131 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CHARACTER_LITERAL)); 2132 //Stmt 2133 //Expr 2134 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2135 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 2136 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 2137 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 2138 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 2139 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 2140 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 2141 //Character Literal 2142 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getValue 2143 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 2144 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // getKind 2145 CharacterLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2146 2147 // Abbreviation for EXPR_IMPLICIT_CAST 2148 Abv = std::make_shared<BitCodeAbbrev>(); 2149 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_IMPLICIT_CAST)); 2150 // Stmt 2151 // Expr 2152 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2153 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 2154 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 2155 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 2156 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 2157 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 2158 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 2159 // CastExpr 2160 Abv->Add(BitCodeAbbrevOp(0)); // PathSize 2161 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 6)); // CastKind 2162 // ImplicitCastExpr 2163 ExprImplicitCastAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2164 2165 Abv = std::make_shared<BitCodeAbbrev>(); 2166 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_LEXICAL)); 2167 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2168 DeclContextLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2169 2170 Abv = std::make_shared<BitCodeAbbrev>(); 2171 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_VISIBLE)); 2172 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2173 DeclContextVisibleLookupAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2174 } 2175 2176 /// isRequiredDecl - Check if this is a "required" Decl, which must be seen by 2177 /// consumers of the AST. 2178 /// 2179 /// Such decls will always be deserialized from the AST file, so we would like 2180 /// this to be as restrictive as possible. Currently the predicate is driven by 2181 /// code generation requirements, if other clients have a different notion of 2182 /// what is "required" then we may have to consider an alternate scheme where 2183 /// clients can iterate over the top-level decls and get information on them, 2184 /// without necessary deserializing them. We could explicitly require such 2185 /// clients to use a separate API call to "realize" the decl. This should be 2186 /// relatively painless since they would presumably only do it for top-level 2187 /// decls. 2188 static bool isRequiredDecl(const Decl *D, ASTContext &Context, 2189 bool WritingModule) { 2190 // An ObjCMethodDecl is never considered as "required" because its 2191 // implementation container always is. 2192 2193 // File scoped assembly or obj-c or OMP declare target implementation must be 2194 // seen. 2195 if (isa<FileScopeAsmDecl>(D) || isa<ObjCImplDecl>(D) || 2196 D->hasAttr<OMPDeclareTargetDeclAttr>()) 2197 return true; 2198 2199 if (WritingModule && (isa<VarDecl>(D) || isa<ImportDecl>(D))) { 2200 // These declarations are part of the module initializer, and are emitted 2201 // if and when the module is imported, rather than being emitted eagerly. 2202 return false; 2203 } 2204 2205 return Context.DeclMustBeEmitted(D); 2206 } 2207 2208 void ASTWriter::WriteDecl(ASTContext &Context, Decl *D) { 2209 // Determine the ID for this declaration. 2210 serialization::DeclID ID; 2211 assert(!D->isFromASTFile() && "should not be emitting imported decl"); 2212 serialization::DeclID &IDR = DeclIDs[D]; 2213 if (IDR == 0) 2214 IDR = NextDeclID++; 2215 2216 ID = IDR; 2217 2218 assert(ID >= FirstDeclID && "invalid decl ID"); 2219 2220 RecordData Record; 2221 ASTDeclWriter W(*this, Context, Record); 2222 2223 // Build a record for this declaration 2224 W.Visit(D); 2225 2226 // Emit this declaration to the bitstream. 2227 uint64_t Offset = W.Emit(D); 2228 2229 // Record the offset for this declaration 2230 SourceLocation Loc = D->getLocation(); 2231 unsigned Index = ID - FirstDeclID; 2232 if (DeclOffsets.size() == Index) 2233 DeclOffsets.push_back(DeclOffset(Loc, Offset)); 2234 else if (DeclOffsets.size() < Index) { 2235 // FIXME: Can/should this happen? 2236 DeclOffsets.resize(Index+1); 2237 DeclOffsets[Index].setLocation(Loc); 2238 DeclOffsets[Index].BitOffset = Offset; 2239 } else { 2240 llvm_unreachable("declarations should be emitted in ID order"); 2241 } 2242 2243 SourceManager &SM = Context.getSourceManager(); 2244 if (Loc.isValid() && SM.isLocalSourceLocation(Loc)) 2245 associateDeclWithFile(D, ID); 2246 2247 // Note declarations that should be deserialized eagerly so that we can add 2248 // them to a record in the AST file later. 2249 if (isRequiredDecl(D, Context, WritingModule)) 2250 EagerlyDeserializedDecls.push_back(ID); 2251 } 2252 2253 void ASTRecordWriter::AddFunctionDefinition(const FunctionDecl *FD) { 2254 // Switch case IDs are per function body. 2255 Writer->ClearSwitchCaseIDs(); 2256 2257 assert(FD->doesThisDeclarationHaveABody()); 2258 bool ModulesCodegen = false; 2259 if (Writer->WritingModule && !FD->isDependentContext()) { 2260 // Under -fmodules-codegen, codegen is performed for all defined functions. 2261 // When building a C++ Modules TS module interface unit, a strong definition 2262 // in the module interface is provided by the compilation of that module 2263 // interface unit, not by its users. (Inline functions are still emitted 2264 // in module users.) 2265 ModulesCodegen = 2266 Writer->Context->getLangOpts().ModulesCodegen || 2267 (Writer->WritingModule->Kind == Module::ModuleInterfaceUnit && 2268 Writer->Context->GetGVALinkageForFunction(FD) == GVA_StrongExternal); 2269 } 2270 Record->push_back(ModulesCodegen); 2271 if (ModulesCodegen) 2272 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(FD)); 2273 if (auto *CD = dyn_cast<CXXConstructorDecl>(FD)) { 2274 Record->push_back(CD->getNumCtorInitializers()); 2275 if (CD->getNumCtorInitializers()) 2276 AddCXXCtorInitializers( 2277 llvm::makeArrayRef(CD->init_begin(), CD->init_end())); 2278 } 2279 AddStmt(FD->getBody()); 2280 } 2281