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->IsMultiVersion); 538 Record.push_back(D->IsLateTemplateParsed); 539 Record.push_back(D->getLinkageInternal()); 540 Record.AddSourceLocation(D->getLocEnd()); 541 542 Record.push_back(D->getODRHash()); 543 544 Record.push_back(D->getTemplatedKind()); 545 switch (D->getTemplatedKind()) { 546 case FunctionDecl::TK_NonTemplate: 547 break; 548 case FunctionDecl::TK_FunctionTemplate: 549 Record.AddDeclRef(D->getDescribedFunctionTemplate()); 550 break; 551 case FunctionDecl::TK_MemberSpecialization: { 552 MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo(); 553 Record.AddDeclRef(MemberInfo->getInstantiatedFrom()); 554 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 555 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation()); 556 break; 557 } 558 case FunctionDecl::TK_FunctionTemplateSpecialization: { 559 FunctionTemplateSpecializationInfo * 560 FTSInfo = D->getTemplateSpecializationInfo(); 561 562 RegisterTemplateSpecialization(FTSInfo->getTemplate(), D); 563 564 Record.AddDeclRef(FTSInfo->getTemplate()); 565 Record.push_back(FTSInfo->getTemplateSpecializationKind()); 566 567 // Template arguments. 568 Record.AddTemplateArgumentList(FTSInfo->TemplateArguments); 569 570 // Template args as written. 571 Record.push_back(FTSInfo->TemplateArgumentsAsWritten != nullptr); 572 if (FTSInfo->TemplateArgumentsAsWritten) { 573 Record.push_back(FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs); 574 for (int i=0, e = FTSInfo->TemplateArgumentsAsWritten->NumTemplateArgs; 575 i!=e; ++i) 576 Record.AddTemplateArgumentLoc( 577 (*FTSInfo->TemplateArgumentsAsWritten)[i]); 578 Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->LAngleLoc); 579 Record.AddSourceLocation(FTSInfo->TemplateArgumentsAsWritten->RAngleLoc); 580 } 581 582 Record.AddSourceLocation(FTSInfo->getPointOfInstantiation()); 583 584 if (D->isCanonicalDecl()) { 585 // Write the template that contains the specializations set. We will 586 // add a FunctionTemplateSpecializationInfo to it when reading. 587 Record.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl()); 588 } 589 break; 590 } 591 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: { 592 DependentFunctionTemplateSpecializationInfo * 593 DFTSInfo = D->getDependentSpecializationInfo(); 594 595 // Templates. 596 Record.push_back(DFTSInfo->getNumTemplates()); 597 for (int i=0, e = DFTSInfo->getNumTemplates(); i != e; ++i) 598 Record.AddDeclRef(DFTSInfo->getTemplate(i)); 599 600 // Templates args. 601 Record.push_back(DFTSInfo->getNumTemplateArgs()); 602 for (int i=0, e = DFTSInfo->getNumTemplateArgs(); i != e; ++i) 603 Record.AddTemplateArgumentLoc(DFTSInfo->getTemplateArg(i)); 604 Record.AddSourceLocation(DFTSInfo->getLAngleLoc()); 605 Record.AddSourceLocation(DFTSInfo->getRAngleLoc()); 606 break; 607 } 608 } 609 610 Record.push_back(D->param_size()); 611 for (auto P : D->parameters()) 612 Record.AddDeclRef(P); 613 Code = serialization::DECL_FUNCTION; 614 } 615 616 void ASTDeclWriter::VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D) { 617 VisitFunctionDecl(D); 618 Record.push_back(D->IsCopyDeductionCandidate); 619 Code = serialization::DECL_CXX_DEDUCTION_GUIDE; 620 } 621 622 void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) { 623 VisitNamedDecl(D); 624 // FIXME: convert to LazyStmtPtr? 625 // Unlike C/C++, method bodies will never be in header files. 626 bool HasBodyStuff = D->getBody() != nullptr || 627 D->getSelfDecl() != nullptr || D->getCmdDecl() != nullptr; 628 Record.push_back(HasBodyStuff); 629 if (HasBodyStuff) { 630 Record.AddStmt(D->getBody()); 631 Record.AddDeclRef(D->getSelfDecl()); 632 Record.AddDeclRef(D->getCmdDecl()); 633 } 634 Record.push_back(D->isInstanceMethod()); 635 Record.push_back(D->isVariadic()); 636 Record.push_back(D->isPropertyAccessor()); 637 Record.push_back(D->isDefined()); 638 Record.push_back(D->IsOverriding); 639 Record.push_back(D->HasSkippedBody); 640 641 Record.push_back(D->IsRedeclaration); 642 Record.push_back(D->HasRedeclaration); 643 if (D->HasRedeclaration) { 644 assert(Context.getObjCMethodRedeclaration(D)); 645 Record.AddDeclRef(Context.getObjCMethodRedeclaration(D)); 646 } 647 648 // FIXME: stable encoding for @required/@optional 649 Record.push_back(D->getImplementationControl()); 650 // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway/nullability 651 Record.push_back(D->getObjCDeclQualifier()); 652 Record.push_back(D->hasRelatedResultType()); 653 Record.AddTypeRef(D->getReturnType()); 654 Record.AddTypeSourceInfo(D->getReturnTypeSourceInfo()); 655 Record.AddSourceLocation(D->getLocEnd()); 656 Record.push_back(D->param_size()); 657 for (const auto *P : D->parameters()) 658 Record.AddDeclRef(P); 659 660 Record.push_back(D->SelLocsKind); 661 unsigned NumStoredSelLocs = D->getNumStoredSelLocs(); 662 SourceLocation *SelLocs = D->getStoredSelLocs(); 663 Record.push_back(NumStoredSelLocs); 664 for (unsigned i = 0; i != NumStoredSelLocs; ++i) 665 Record.AddSourceLocation(SelLocs[i]); 666 667 Code = serialization::DECL_OBJC_METHOD; 668 } 669 670 void ASTDeclWriter::VisitObjCTypeParamDecl(ObjCTypeParamDecl *D) { 671 VisitTypedefNameDecl(D); 672 Record.push_back(D->Variance); 673 Record.push_back(D->Index); 674 Record.AddSourceLocation(D->VarianceLoc); 675 Record.AddSourceLocation(D->ColonLoc); 676 677 Code = serialization::DECL_OBJC_TYPE_PARAM; 678 } 679 680 void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) { 681 VisitNamedDecl(D); 682 Record.AddSourceLocation(D->getAtStartLoc()); 683 Record.AddSourceRange(D->getAtEndRange()); 684 // Abstract class (no need to define a stable serialization::DECL code). 685 } 686 687 void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) { 688 VisitRedeclarable(D); 689 VisitObjCContainerDecl(D); 690 Record.AddTypeRef(QualType(D->getTypeForDecl(), 0)); 691 AddObjCTypeParamList(D->TypeParamList); 692 693 Record.push_back(D->isThisDeclarationADefinition()); 694 if (D->isThisDeclarationADefinition()) { 695 // Write the DefinitionData 696 ObjCInterfaceDecl::DefinitionData &Data = D->data(); 697 698 Record.AddTypeSourceInfo(D->getSuperClassTInfo()); 699 Record.AddSourceLocation(D->getEndOfDefinitionLoc()); 700 Record.push_back(Data.HasDesignatedInitializers); 701 702 // Write out the protocols that are directly referenced by the @interface. 703 Record.push_back(Data.ReferencedProtocols.size()); 704 for (const auto *P : D->protocols()) 705 Record.AddDeclRef(P); 706 for (const auto &PL : D->protocol_locs()) 707 Record.AddSourceLocation(PL); 708 709 // Write out the protocols that are transitively referenced. 710 Record.push_back(Data.AllReferencedProtocols.size()); 711 for (ObjCList<ObjCProtocolDecl>::iterator 712 P = Data.AllReferencedProtocols.begin(), 713 PEnd = Data.AllReferencedProtocols.end(); 714 P != PEnd; ++P) 715 Record.AddDeclRef(*P); 716 717 718 if (ObjCCategoryDecl *Cat = D->getCategoryListRaw()) { 719 // Ensure that we write out the set of categories for this class. 720 Writer.ObjCClassesWithCategories.insert(D); 721 722 // Make sure that the categories get serialized. 723 for (; Cat; Cat = Cat->getNextClassCategoryRaw()) 724 (void)Writer.GetDeclRef(Cat); 725 } 726 } 727 728 Code = serialization::DECL_OBJC_INTERFACE; 729 } 730 731 void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) { 732 VisitFieldDecl(D); 733 // FIXME: stable encoding for @public/@private/@protected/@package 734 Record.push_back(D->getAccessControl()); 735 Record.push_back(D->getSynthesize()); 736 737 if (D->getDeclContext() == D->getLexicalDeclContext() && 738 !D->hasAttrs() && 739 !D->isImplicit() && 740 !D->isUsed(false) && 741 !D->isInvalidDecl() && 742 !D->isReferenced() && 743 !D->isModulePrivate() && 744 !D->getBitWidth() && 745 !D->hasExtInfo() && 746 D->getDeclName()) 747 AbbrevToUse = Writer.getDeclObjCIvarAbbrev(); 748 749 Code = serialization::DECL_OBJC_IVAR; 750 } 751 752 void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) { 753 VisitRedeclarable(D); 754 VisitObjCContainerDecl(D); 755 756 Record.push_back(D->isThisDeclarationADefinition()); 757 if (D->isThisDeclarationADefinition()) { 758 Record.push_back(D->protocol_size()); 759 for (const auto *I : D->protocols()) 760 Record.AddDeclRef(I); 761 for (const auto &PL : D->protocol_locs()) 762 Record.AddSourceLocation(PL); 763 } 764 765 Code = serialization::DECL_OBJC_PROTOCOL; 766 } 767 768 void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) { 769 VisitFieldDecl(D); 770 Code = serialization::DECL_OBJC_AT_DEFS_FIELD; 771 } 772 773 void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) { 774 VisitObjCContainerDecl(D); 775 Record.AddSourceLocation(D->getCategoryNameLoc()); 776 Record.AddSourceLocation(D->getIvarLBraceLoc()); 777 Record.AddSourceLocation(D->getIvarRBraceLoc()); 778 Record.AddDeclRef(D->getClassInterface()); 779 AddObjCTypeParamList(D->TypeParamList); 780 Record.push_back(D->protocol_size()); 781 for (const auto *I : D->protocols()) 782 Record.AddDeclRef(I); 783 for (const auto &PL : D->protocol_locs()) 784 Record.AddSourceLocation(PL); 785 Code = serialization::DECL_OBJC_CATEGORY; 786 } 787 788 void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) { 789 VisitNamedDecl(D); 790 Record.AddDeclRef(D->getClassInterface()); 791 Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS; 792 } 793 794 void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) { 795 VisitNamedDecl(D); 796 Record.AddSourceLocation(D->getAtLoc()); 797 Record.AddSourceLocation(D->getLParenLoc()); 798 Record.AddTypeRef(D->getType()); 799 Record.AddTypeSourceInfo(D->getTypeSourceInfo()); 800 // FIXME: stable encoding 801 Record.push_back((unsigned)D->getPropertyAttributes()); 802 Record.push_back((unsigned)D->getPropertyAttributesAsWritten()); 803 // FIXME: stable encoding 804 Record.push_back((unsigned)D->getPropertyImplementation()); 805 Record.AddDeclarationName(D->getGetterName()); 806 Record.AddSourceLocation(D->getGetterNameLoc()); 807 Record.AddDeclarationName(D->getSetterName()); 808 Record.AddSourceLocation(D->getSetterNameLoc()); 809 Record.AddDeclRef(D->getGetterMethodDecl()); 810 Record.AddDeclRef(D->getSetterMethodDecl()); 811 Record.AddDeclRef(D->getPropertyIvarDecl()); 812 Code = serialization::DECL_OBJC_PROPERTY; 813 } 814 815 void ASTDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) { 816 VisitObjCContainerDecl(D); 817 Record.AddDeclRef(D->getClassInterface()); 818 // Abstract class (no need to define a stable serialization::DECL code). 819 } 820 821 void ASTDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { 822 VisitObjCImplDecl(D); 823 Record.AddSourceLocation(D->getCategoryNameLoc()); 824 Code = serialization::DECL_OBJC_CATEGORY_IMPL; 825 } 826 827 void ASTDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { 828 VisitObjCImplDecl(D); 829 Record.AddDeclRef(D->getSuperClass()); 830 Record.AddSourceLocation(D->getSuperClassLoc()); 831 Record.AddSourceLocation(D->getIvarLBraceLoc()); 832 Record.AddSourceLocation(D->getIvarRBraceLoc()); 833 Record.push_back(D->hasNonZeroConstructors()); 834 Record.push_back(D->hasDestructors()); 835 Record.push_back(D->NumIvarInitializers); 836 if (D->NumIvarInitializers) 837 Record.AddCXXCtorInitializers( 838 llvm::makeArrayRef(D->init_begin(), D->init_end())); 839 Code = serialization::DECL_OBJC_IMPLEMENTATION; 840 } 841 842 void ASTDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) { 843 VisitDecl(D); 844 Record.AddSourceLocation(D->getLocStart()); 845 Record.AddDeclRef(D->getPropertyDecl()); 846 Record.AddDeclRef(D->getPropertyIvarDecl()); 847 Record.AddSourceLocation(D->getPropertyIvarDeclLoc()); 848 Record.AddStmt(D->getGetterCXXConstructor()); 849 Record.AddStmt(D->getSetterCXXAssignment()); 850 Code = serialization::DECL_OBJC_PROPERTY_IMPL; 851 } 852 853 void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) { 854 VisitDeclaratorDecl(D); 855 Record.push_back(D->isMutable()); 856 857 FieldDecl::InitStorageKind ISK = D->InitStorage.getInt(); 858 Record.push_back(ISK); 859 if (ISK == FieldDecl::ISK_CapturedVLAType) 860 Record.AddTypeRef(QualType(D->getCapturedVLAType(), 0)); 861 else if (ISK) 862 Record.AddStmt(D->getInClassInitializer()); 863 864 Record.AddStmt(D->getBitWidth()); 865 866 if (!D->getDeclName()) 867 Record.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D)); 868 869 if (D->getDeclContext() == D->getLexicalDeclContext() && 870 !D->hasAttrs() && 871 !D->isImplicit() && 872 !D->isUsed(false) && 873 !D->isInvalidDecl() && 874 !D->isReferenced() && 875 !D->isTopLevelDeclInObjCContainer() && 876 !D->isModulePrivate() && 877 !D->getBitWidth() && 878 !D->hasInClassInitializer() && 879 !D->hasCapturedVLAType() && 880 !D->hasExtInfo() && 881 !ObjCIvarDecl::classofKind(D->getKind()) && 882 !ObjCAtDefsFieldDecl::classofKind(D->getKind()) && 883 D->getDeclName()) 884 AbbrevToUse = Writer.getDeclFieldAbbrev(); 885 886 Code = serialization::DECL_FIELD; 887 } 888 889 void ASTDeclWriter::VisitMSPropertyDecl(MSPropertyDecl *D) { 890 VisitDeclaratorDecl(D); 891 Record.AddIdentifierRef(D->getGetterId()); 892 Record.AddIdentifierRef(D->getSetterId()); 893 Code = serialization::DECL_MS_PROPERTY; 894 } 895 896 void ASTDeclWriter::VisitIndirectFieldDecl(IndirectFieldDecl *D) { 897 VisitValueDecl(D); 898 Record.push_back(D->getChainingSize()); 899 900 for (const auto *P : D->chain()) 901 Record.AddDeclRef(P); 902 Code = serialization::DECL_INDIRECTFIELD; 903 } 904 905 void ASTDeclWriter::VisitVarDecl(VarDecl *D) { 906 VisitRedeclarable(D); 907 VisitDeclaratorDecl(D); 908 Record.push_back(D->getStorageClass()); 909 Record.push_back(D->getTSCSpec()); 910 Record.push_back(D->getInitStyle()); 911 if (!isa<ParmVarDecl>(D)) { 912 Record.push_back(D->isThisDeclarationADemotedDefinition()); 913 Record.push_back(D->isExceptionVariable()); 914 Record.push_back(D->isNRVOVariable()); 915 Record.push_back(D->isCXXForRangeDecl()); 916 Record.push_back(D->isARCPseudoStrong()); 917 Record.push_back(D->isInline()); 918 Record.push_back(D->isInlineSpecified()); 919 Record.push_back(D->isConstexpr()); 920 Record.push_back(D->isInitCapture()); 921 Record.push_back(D->isPreviousDeclInSameBlockScope()); 922 if (const auto *IPD = dyn_cast<ImplicitParamDecl>(D)) 923 Record.push_back(static_cast<unsigned>(IPD->getParameterKind())); 924 else 925 Record.push_back(0); 926 } 927 Record.push_back(D->getLinkageInternal()); 928 929 if (D->getInit()) { 930 Record.push_back(!D->isInitKnownICE() ? 1 : (D->isInitICE() ? 3 : 2)); 931 Record.AddStmt(D->getInit()); 932 } else { 933 Record.push_back(0); 934 } 935 936 if (D->getStorageDuration() == SD_Static) { 937 bool ModulesCodegen = false; 938 if (Writer.WritingModule && 939 !D->getDescribedVarTemplate() && !D->getMemberSpecializationInfo() && 940 !isa<VarTemplateSpecializationDecl>(D)) { 941 // When building a C++ Modules TS module interface unit, a strong 942 // definition in the module interface is provided by the compilation of 943 // that module interface unit, not by its users. (Inline variables are 944 // still emitted in module users.) 945 ModulesCodegen = 946 (Writer.WritingModule->Kind == Module::ModuleInterfaceUnit && 947 Writer.Context->GetGVALinkageForVariable(D) == GVA_StrongExternal); 948 } 949 Record.push_back(ModulesCodegen); 950 if (ModulesCodegen) 951 Writer.ModularCodegenDecls.push_back(Writer.GetDeclRef(D)); 952 } 953 954 enum { 955 VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization 956 }; 957 if (VarTemplateDecl *TemplD = D->getDescribedVarTemplate()) { 958 Record.push_back(VarTemplate); 959 Record.AddDeclRef(TemplD); 960 } else if (MemberSpecializationInfo *SpecInfo 961 = D->getMemberSpecializationInfo()) { 962 Record.push_back(StaticDataMemberSpecialization); 963 Record.AddDeclRef(SpecInfo->getInstantiatedFrom()); 964 Record.push_back(SpecInfo->getTemplateSpecializationKind()); 965 Record.AddSourceLocation(SpecInfo->getPointOfInstantiation()); 966 } else { 967 Record.push_back(VarNotTemplate); 968 } 969 970 if (D->getDeclContext() == D->getLexicalDeclContext() && 971 !D->hasAttrs() && 972 !D->isImplicit() && 973 !D->isUsed(false) && 974 !D->isInvalidDecl() && 975 !D->isReferenced() && 976 !D->isTopLevelDeclInObjCContainer() && 977 D->getAccess() == AS_none && 978 !D->isModulePrivate() && 979 !needsAnonymousDeclarationNumber(D) && 980 D->getDeclName().getNameKind() == DeclarationName::Identifier && 981 !D->hasExtInfo() && 982 D->getFirstDecl() == D->getMostRecentDecl() && 983 D->getKind() == Decl::Var && 984 !D->isInline() && 985 !D->isConstexpr() && 986 !D->isInitCapture() && 987 !D->isPreviousDeclInSameBlockScope() && 988 D->getStorageDuration() != SD_Static && 989 !D->getMemberSpecializationInfo()) 990 AbbrevToUse = Writer.getDeclVarAbbrev(); 991 992 Code = serialization::DECL_VAR; 993 } 994 995 void ASTDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) { 996 VisitVarDecl(D); 997 Code = serialization::DECL_IMPLICIT_PARAM; 998 } 999 1000 void ASTDeclWriter::VisitParmVarDecl(ParmVarDecl *D) { 1001 VisitVarDecl(D); 1002 Record.push_back(D->isObjCMethodParameter()); 1003 Record.push_back(D->getFunctionScopeDepth()); 1004 Record.push_back(D->getFunctionScopeIndex()); 1005 Record.push_back(D->getObjCDeclQualifier()); // FIXME: stable encoding 1006 Record.push_back(D->isKNRPromoted()); 1007 Record.push_back(D->hasInheritedDefaultArg()); 1008 Record.push_back(D->hasUninstantiatedDefaultArg()); 1009 if (D->hasUninstantiatedDefaultArg()) 1010 Record.AddStmt(D->getUninstantiatedDefaultArg()); 1011 Code = serialization::DECL_PARM_VAR; 1012 1013 assert(!D->isARCPseudoStrong()); // can be true of ImplicitParamDecl 1014 1015 // If the assumptions about the DECL_PARM_VAR abbrev are true, use it. Here 1016 // we dynamically check for the properties that we optimize for, but don't 1017 // know are true of all PARM_VAR_DECLs. 1018 if (D->getDeclContext() == D->getLexicalDeclContext() && 1019 !D->hasAttrs() && 1020 !D->hasExtInfo() && 1021 !D->isImplicit() && 1022 !D->isUsed(false) && 1023 !D->isInvalidDecl() && 1024 !D->isReferenced() && 1025 D->getAccess() == AS_none && 1026 !D->isModulePrivate() && 1027 D->getStorageClass() == 0 && 1028 D->getInitStyle() == VarDecl::CInit && // Can params have anything else? 1029 D->getFunctionScopeDepth() == 0 && 1030 D->getObjCDeclQualifier() == 0 && 1031 !D->isKNRPromoted() && 1032 !D->hasInheritedDefaultArg() && 1033 D->getInit() == nullptr && 1034 !D->hasUninstantiatedDefaultArg()) // No default expr. 1035 AbbrevToUse = Writer.getDeclParmVarAbbrev(); 1036 1037 // Check things we know are true of *every* PARM_VAR_DECL, which is more than 1038 // just us assuming it. 1039 assert(!D->getTSCSpec() && "PARM_VAR_DECL can't use TLS"); 1040 assert(!D->isThisDeclarationADemotedDefinition() 1041 && "PARM_VAR_DECL can't be demoted definition."); 1042 assert(D->getAccess() == AS_none && "PARM_VAR_DECL can't be public/private"); 1043 assert(!D->isExceptionVariable() && "PARM_VAR_DECL can't be exception var"); 1044 assert(D->getPreviousDecl() == nullptr && "PARM_VAR_DECL can't be redecl"); 1045 assert(!D->isStaticDataMember() && 1046 "PARM_VAR_DECL can't be static data member"); 1047 } 1048 1049 void ASTDeclWriter::VisitDecompositionDecl(DecompositionDecl *D) { 1050 // Record the number of bindings first to simplify deserialization. 1051 Record.push_back(D->bindings().size()); 1052 1053 VisitVarDecl(D); 1054 for (auto *B : D->bindings()) 1055 Record.AddDeclRef(B); 1056 Code = serialization::DECL_DECOMPOSITION; 1057 } 1058 1059 void ASTDeclWriter::VisitBindingDecl(BindingDecl *D) { 1060 VisitValueDecl(D); 1061 Record.AddStmt(D->getBinding()); 1062 Code = serialization::DECL_BINDING; 1063 } 1064 1065 void ASTDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) { 1066 VisitDecl(D); 1067 Record.AddStmt(D->getAsmString()); 1068 Record.AddSourceLocation(D->getRParenLoc()); 1069 Code = serialization::DECL_FILE_SCOPE_ASM; 1070 } 1071 1072 void ASTDeclWriter::VisitEmptyDecl(EmptyDecl *D) { 1073 VisitDecl(D); 1074 Code = serialization::DECL_EMPTY; 1075 } 1076 1077 void ASTDeclWriter::VisitBlockDecl(BlockDecl *D) { 1078 VisitDecl(D); 1079 Record.AddStmt(D->getBody()); 1080 Record.AddTypeSourceInfo(D->getSignatureAsWritten()); 1081 Record.push_back(D->param_size()); 1082 for (ParmVarDecl *P : D->parameters()) 1083 Record.AddDeclRef(P); 1084 Record.push_back(D->isVariadic()); 1085 Record.push_back(D->blockMissingReturnType()); 1086 Record.push_back(D->isConversionFromLambda()); 1087 Record.push_back(D->capturesCXXThis()); 1088 Record.push_back(D->getNumCaptures()); 1089 for (const auto &capture : D->captures()) { 1090 Record.AddDeclRef(capture.getVariable()); 1091 1092 unsigned flags = 0; 1093 if (capture.isByRef()) flags |= 1; 1094 if (capture.isNested()) flags |= 2; 1095 if (capture.hasCopyExpr()) flags |= 4; 1096 Record.push_back(flags); 1097 1098 if (capture.hasCopyExpr()) Record.AddStmt(capture.getCopyExpr()); 1099 } 1100 1101 Code = serialization::DECL_BLOCK; 1102 } 1103 1104 void ASTDeclWriter::VisitCapturedDecl(CapturedDecl *CD) { 1105 Record.push_back(CD->getNumParams()); 1106 VisitDecl(CD); 1107 Record.push_back(CD->getContextParamPosition()); 1108 Record.push_back(CD->isNothrow() ? 1 : 0); 1109 // Body is stored by VisitCapturedStmt. 1110 for (unsigned I = 0; I < CD->getNumParams(); ++I) 1111 Record.AddDeclRef(CD->getParam(I)); 1112 Code = serialization::DECL_CAPTURED; 1113 } 1114 1115 void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) { 1116 VisitDecl(D); 1117 Record.push_back(D->getLanguage()); 1118 Record.AddSourceLocation(D->getExternLoc()); 1119 Record.AddSourceLocation(D->getRBraceLoc()); 1120 Code = serialization::DECL_LINKAGE_SPEC; 1121 } 1122 1123 void ASTDeclWriter::VisitExportDecl(ExportDecl *D) { 1124 VisitDecl(D); 1125 Record.AddSourceLocation(D->getRBraceLoc()); 1126 Code = serialization::DECL_EXPORT; 1127 } 1128 1129 void ASTDeclWriter::VisitLabelDecl(LabelDecl *D) { 1130 VisitNamedDecl(D); 1131 Record.AddSourceLocation(D->getLocStart()); 1132 Code = serialization::DECL_LABEL; 1133 } 1134 1135 1136 void ASTDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) { 1137 VisitRedeclarable(D); 1138 VisitNamedDecl(D); 1139 Record.push_back(D->isInline()); 1140 Record.AddSourceLocation(D->getLocStart()); 1141 Record.AddSourceLocation(D->getRBraceLoc()); 1142 1143 if (D->isOriginalNamespace()) 1144 Record.AddDeclRef(D->getAnonymousNamespace()); 1145 Code = serialization::DECL_NAMESPACE; 1146 1147 if (Writer.hasChain() && D->isAnonymousNamespace() && 1148 D == D->getMostRecentDecl()) { 1149 // This is a most recent reopening of the anonymous namespace. If its parent 1150 // is in a previous PCH (or is the TU), mark that parent for update, because 1151 // the original namespace always points to the latest re-opening of its 1152 // anonymous namespace. 1153 Decl *Parent = cast<Decl>( 1154 D->getParent()->getRedeclContext()->getPrimaryContext()); 1155 if (Parent->isFromASTFile() || isa<TranslationUnitDecl>(Parent)) { 1156 Writer.DeclUpdates[Parent].push_back( 1157 ASTWriter::DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, D)); 1158 } 1159 } 1160 } 1161 1162 void ASTDeclWriter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { 1163 VisitRedeclarable(D); 1164 VisitNamedDecl(D); 1165 Record.AddSourceLocation(D->getNamespaceLoc()); 1166 Record.AddSourceLocation(D->getTargetNameLoc()); 1167 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1168 Record.AddDeclRef(D->getNamespace()); 1169 Code = serialization::DECL_NAMESPACE_ALIAS; 1170 } 1171 1172 void ASTDeclWriter::VisitUsingDecl(UsingDecl *D) { 1173 VisitNamedDecl(D); 1174 Record.AddSourceLocation(D->getUsingLoc()); 1175 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1176 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName()); 1177 Record.AddDeclRef(D->FirstUsingShadow.getPointer()); 1178 Record.push_back(D->hasTypename()); 1179 Record.AddDeclRef(Context.getInstantiatedFromUsingDecl(D)); 1180 Code = serialization::DECL_USING; 1181 } 1182 1183 void ASTDeclWriter::VisitUsingPackDecl(UsingPackDecl *D) { 1184 Record.push_back(D->NumExpansions); 1185 VisitNamedDecl(D); 1186 Record.AddDeclRef(D->getInstantiatedFromUsingDecl()); 1187 for (auto *E : D->expansions()) 1188 Record.AddDeclRef(E); 1189 Code = serialization::DECL_USING_PACK; 1190 } 1191 1192 void ASTDeclWriter::VisitUsingShadowDecl(UsingShadowDecl *D) { 1193 VisitRedeclarable(D); 1194 VisitNamedDecl(D); 1195 Record.AddDeclRef(D->getTargetDecl()); 1196 Record.push_back(D->getIdentifierNamespace()); 1197 Record.AddDeclRef(D->UsingOrNextShadow); 1198 Record.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D)); 1199 Code = serialization::DECL_USING_SHADOW; 1200 } 1201 1202 void ASTDeclWriter::VisitConstructorUsingShadowDecl( 1203 ConstructorUsingShadowDecl *D) { 1204 VisitUsingShadowDecl(D); 1205 Record.AddDeclRef(D->NominatedBaseClassShadowDecl); 1206 Record.AddDeclRef(D->ConstructedBaseClassShadowDecl); 1207 Record.push_back(D->IsVirtual); 1208 Code = serialization::DECL_CONSTRUCTOR_USING_SHADOW; 1209 } 1210 1211 void ASTDeclWriter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { 1212 VisitNamedDecl(D); 1213 Record.AddSourceLocation(D->getUsingLoc()); 1214 Record.AddSourceLocation(D->getNamespaceKeyLocation()); 1215 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1216 Record.AddDeclRef(D->getNominatedNamespace()); 1217 Record.AddDeclRef(dyn_cast<Decl>(D->getCommonAncestor())); 1218 Code = serialization::DECL_USING_DIRECTIVE; 1219 } 1220 1221 void ASTDeclWriter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) { 1222 VisitValueDecl(D); 1223 Record.AddSourceLocation(D->getUsingLoc()); 1224 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1225 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName()); 1226 Record.AddSourceLocation(D->getEllipsisLoc()); 1227 Code = serialization::DECL_UNRESOLVED_USING_VALUE; 1228 } 1229 1230 void ASTDeclWriter::VisitUnresolvedUsingTypenameDecl( 1231 UnresolvedUsingTypenameDecl *D) { 1232 VisitTypeDecl(D); 1233 Record.AddSourceLocation(D->getTypenameLoc()); 1234 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1235 Record.AddSourceLocation(D->getEllipsisLoc()); 1236 Code = serialization::DECL_UNRESOLVED_USING_TYPENAME; 1237 } 1238 1239 void ASTDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) { 1240 VisitRecordDecl(D); 1241 1242 enum { 1243 CXXRecNotTemplate = 0, CXXRecTemplate, CXXRecMemberSpecialization 1244 }; 1245 if (ClassTemplateDecl *TemplD = D->getDescribedClassTemplate()) { 1246 Record.push_back(CXXRecTemplate); 1247 Record.AddDeclRef(TemplD); 1248 } else if (MemberSpecializationInfo *MSInfo 1249 = D->getMemberSpecializationInfo()) { 1250 Record.push_back(CXXRecMemberSpecialization); 1251 Record.AddDeclRef(MSInfo->getInstantiatedFrom()); 1252 Record.push_back(MSInfo->getTemplateSpecializationKind()); 1253 Record.AddSourceLocation(MSInfo->getPointOfInstantiation()); 1254 } else { 1255 Record.push_back(CXXRecNotTemplate); 1256 } 1257 1258 Record.push_back(D->isThisDeclarationADefinition()); 1259 if (D->isThisDeclarationADefinition()) 1260 Record.AddCXXDefinitionData(D); 1261 1262 // Store (what we currently believe to be) the key function to avoid 1263 // deserializing every method so we can compute it. 1264 if (D->IsCompleteDefinition) 1265 Record.AddDeclRef(Context.getCurrentKeyFunction(D)); 1266 1267 Code = serialization::DECL_CXX_RECORD; 1268 } 1269 1270 void ASTDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) { 1271 VisitFunctionDecl(D); 1272 if (D->isCanonicalDecl()) { 1273 Record.push_back(D->size_overridden_methods()); 1274 for (const CXXMethodDecl *MD : D->overridden_methods()) 1275 Record.AddDeclRef(MD); 1276 } else { 1277 // We only need to record overridden methods once for the canonical decl. 1278 Record.push_back(0); 1279 } 1280 1281 if (D->getDeclContext() == D->getLexicalDeclContext() && 1282 D->getFirstDecl() == D->getMostRecentDecl() && 1283 !D->isInvalidDecl() && 1284 !D->hasAttrs() && 1285 !D->isTopLevelDeclInObjCContainer() && 1286 D->getDeclName().getNameKind() == DeclarationName::Identifier && 1287 !D->hasExtInfo() && 1288 !D->hasInheritedPrototype() && 1289 D->hasWrittenPrototype()) 1290 AbbrevToUse = Writer.getDeclCXXMethodAbbrev(); 1291 1292 Code = serialization::DECL_CXX_METHOD; 1293 } 1294 1295 void ASTDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) { 1296 if (auto Inherited = D->getInheritedConstructor()) { 1297 Record.AddDeclRef(Inherited.getShadowDecl()); 1298 Record.AddDeclRef(Inherited.getConstructor()); 1299 Code = serialization::DECL_CXX_INHERITED_CONSTRUCTOR; 1300 } else { 1301 Code = serialization::DECL_CXX_CONSTRUCTOR; 1302 } 1303 1304 VisitCXXMethodDecl(D); 1305 1306 Code = D->isInheritingConstructor() 1307 ? serialization::DECL_CXX_INHERITED_CONSTRUCTOR 1308 : serialization::DECL_CXX_CONSTRUCTOR; 1309 } 1310 1311 void ASTDeclWriter::VisitCXXDestructorDecl(CXXDestructorDecl *D) { 1312 VisitCXXMethodDecl(D); 1313 1314 Record.AddDeclRef(D->getOperatorDelete()); 1315 if (D->getOperatorDelete()) 1316 Record.AddStmt(D->getOperatorDeleteThisArg()); 1317 1318 Code = serialization::DECL_CXX_DESTRUCTOR; 1319 } 1320 1321 void ASTDeclWriter::VisitCXXConversionDecl(CXXConversionDecl *D) { 1322 VisitCXXMethodDecl(D); 1323 Code = serialization::DECL_CXX_CONVERSION; 1324 } 1325 1326 void ASTDeclWriter::VisitImportDecl(ImportDecl *D) { 1327 VisitDecl(D); 1328 Record.push_back(Writer.getSubmoduleID(D->getImportedModule())); 1329 ArrayRef<SourceLocation> IdentifierLocs = D->getIdentifierLocs(); 1330 Record.push_back(!IdentifierLocs.empty()); 1331 if (IdentifierLocs.empty()) { 1332 Record.AddSourceLocation(D->getLocEnd()); 1333 Record.push_back(1); 1334 } else { 1335 for (unsigned I = 0, N = IdentifierLocs.size(); I != N; ++I) 1336 Record.AddSourceLocation(IdentifierLocs[I]); 1337 Record.push_back(IdentifierLocs.size()); 1338 } 1339 // Note: the number of source locations must always be the last element in 1340 // the record. 1341 Code = serialization::DECL_IMPORT; 1342 } 1343 1344 void ASTDeclWriter::VisitAccessSpecDecl(AccessSpecDecl *D) { 1345 VisitDecl(D); 1346 Record.AddSourceLocation(D->getColonLoc()); 1347 Code = serialization::DECL_ACCESS_SPEC; 1348 } 1349 1350 void ASTDeclWriter::VisitFriendDecl(FriendDecl *D) { 1351 // Record the number of friend type template parameter lists here 1352 // so as to simplify memory allocation during deserialization. 1353 Record.push_back(D->NumTPLists); 1354 VisitDecl(D); 1355 bool hasFriendDecl = D->Friend.is<NamedDecl*>(); 1356 Record.push_back(hasFriendDecl); 1357 if (hasFriendDecl) 1358 Record.AddDeclRef(D->getFriendDecl()); 1359 else 1360 Record.AddTypeSourceInfo(D->getFriendType()); 1361 for (unsigned i = 0; i < D->NumTPLists; ++i) 1362 Record.AddTemplateParameterList(D->getFriendTypeTemplateParameterList(i)); 1363 Record.AddDeclRef(D->getNextFriend()); 1364 Record.push_back(D->UnsupportedFriend); 1365 Record.AddSourceLocation(D->FriendLoc); 1366 Code = serialization::DECL_FRIEND; 1367 } 1368 1369 void ASTDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) { 1370 VisitDecl(D); 1371 Record.push_back(D->getNumTemplateParameters()); 1372 for (unsigned i = 0, e = D->getNumTemplateParameters(); i != e; ++i) 1373 Record.AddTemplateParameterList(D->getTemplateParameterList(i)); 1374 Record.push_back(D->getFriendDecl() != nullptr); 1375 if (D->getFriendDecl()) 1376 Record.AddDeclRef(D->getFriendDecl()); 1377 else 1378 Record.AddTypeSourceInfo(D->getFriendType()); 1379 Record.AddSourceLocation(D->getFriendLoc()); 1380 Code = serialization::DECL_FRIEND_TEMPLATE; 1381 } 1382 1383 void ASTDeclWriter::VisitTemplateDecl(TemplateDecl *D) { 1384 VisitNamedDecl(D); 1385 1386 Record.AddDeclRef(D->getTemplatedDecl()); 1387 Record.AddTemplateParameterList(D->getTemplateParameters()); 1388 } 1389 1390 void ASTDeclWriter::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) { 1391 VisitRedeclarable(D); 1392 1393 // Emit data to initialize CommonOrPrev before VisitTemplateDecl so that 1394 // getCommonPtr() can be used while this is still initializing. 1395 if (D->isFirstDecl()) { 1396 // This declaration owns the 'common' pointer, so serialize that data now. 1397 Record.AddDeclRef(D->getInstantiatedFromMemberTemplate()); 1398 if (D->getInstantiatedFromMemberTemplate()) 1399 Record.push_back(D->isMemberSpecialization()); 1400 } 1401 1402 VisitTemplateDecl(D); 1403 Record.push_back(D->getIdentifierNamespace()); 1404 } 1405 1406 void ASTDeclWriter::VisitClassTemplateDecl(ClassTemplateDecl *D) { 1407 VisitRedeclarableTemplateDecl(D); 1408 1409 if (D->isFirstDecl()) 1410 AddTemplateSpecializations(D); 1411 Code = serialization::DECL_CLASS_TEMPLATE; 1412 } 1413 1414 void ASTDeclWriter::VisitClassTemplateSpecializationDecl( 1415 ClassTemplateSpecializationDecl *D) { 1416 RegisterTemplateSpecialization(D->getSpecializedTemplate(), D); 1417 1418 VisitCXXRecordDecl(D); 1419 1420 llvm::PointerUnion<ClassTemplateDecl *, 1421 ClassTemplatePartialSpecializationDecl *> InstFrom 1422 = D->getSpecializedTemplateOrPartial(); 1423 if (Decl *InstFromD = InstFrom.dyn_cast<ClassTemplateDecl *>()) { 1424 Record.AddDeclRef(InstFromD); 1425 } else { 1426 Record.AddDeclRef(InstFrom.get<ClassTemplatePartialSpecializationDecl *>()); 1427 Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs()); 1428 } 1429 1430 Record.AddTemplateArgumentList(&D->getTemplateArgs()); 1431 Record.AddSourceLocation(D->getPointOfInstantiation()); 1432 Record.push_back(D->getSpecializationKind()); 1433 Record.push_back(D->isCanonicalDecl()); 1434 1435 if (D->isCanonicalDecl()) { 1436 // When reading, we'll add it to the folding set of the following template. 1437 Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl()); 1438 } 1439 1440 // Explicit info. 1441 Record.AddTypeSourceInfo(D->getTypeAsWritten()); 1442 if (D->getTypeAsWritten()) { 1443 Record.AddSourceLocation(D->getExternLoc()); 1444 Record.AddSourceLocation(D->getTemplateKeywordLoc()); 1445 } 1446 1447 Code = serialization::DECL_CLASS_TEMPLATE_SPECIALIZATION; 1448 } 1449 1450 void ASTDeclWriter::VisitClassTemplatePartialSpecializationDecl( 1451 ClassTemplatePartialSpecializationDecl *D) { 1452 VisitClassTemplateSpecializationDecl(D); 1453 1454 Record.AddTemplateParameterList(D->getTemplateParameters()); 1455 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten()); 1456 1457 // These are read/set from/to the first declaration. 1458 if (D->getPreviousDecl() == nullptr) { 1459 Record.AddDeclRef(D->getInstantiatedFromMember()); 1460 Record.push_back(D->isMemberSpecialization()); 1461 } 1462 1463 Code = serialization::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION; 1464 } 1465 1466 void ASTDeclWriter::VisitVarTemplateDecl(VarTemplateDecl *D) { 1467 VisitRedeclarableTemplateDecl(D); 1468 1469 if (D->isFirstDecl()) 1470 AddTemplateSpecializations(D); 1471 Code = serialization::DECL_VAR_TEMPLATE; 1472 } 1473 1474 void ASTDeclWriter::VisitVarTemplateSpecializationDecl( 1475 VarTemplateSpecializationDecl *D) { 1476 RegisterTemplateSpecialization(D->getSpecializedTemplate(), D); 1477 1478 VisitVarDecl(D); 1479 1480 llvm::PointerUnion<VarTemplateDecl *, VarTemplatePartialSpecializationDecl *> 1481 InstFrom = D->getSpecializedTemplateOrPartial(); 1482 if (Decl *InstFromD = InstFrom.dyn_cast<VarTemplateDecl *>()) { 1483 Record.AddDeclRef(InstFromD); 1484 } else { 1485 Record.AddDeclRef(InstFrom.get<VarTemplatePartialSpecializationDecl *>()); 1486 Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs()); 1487 } 1488 1489 // Explicit info. 1490 Record.AddTypeSourceInfo(D->getTypeAsWritten()); 1491 if (D->getTypeAsWritten()) { 1492 Record.AddSourceLocation(D->getExternLoc()); 1493 Record.AddSourceLocation(D->getTemplateKeywordLoc()); 1494 } 1495 1496 Record.AddTemplateArgumentList(&D->getTemplateArgs()); 1497 Record.AddSourceLocation(D->getPointOfInstantiation()); 1498 Record.push_back(D->getSpecializationKind()); 1499 Record.push_back(D->IsCompleteDefinition); 1500 Record.push_back(D->isCanonicalDecl()); 1501 1502 if (D->isCanonicalDecl()) { 1503 // When reading, we'll add it to the folding set of the following template. 1504 Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl()); 1505 } 1506 1507 Code = serialization::DECL_VAR_TEMPLATE_SPECIALIZATION; 1508 } 1509 1510 void ASTDeclWriter::VisitVarTemplatePartialSpecializationDecl( 1511 VarTemplatePartialSpecializationDecl *D) { 1512 VisitVarTemplateSpecializationDecl(D); 1513 1514 Record.AddTemplateParameterList(D->getTemplateParameters()); 1515 Record.AddASTTemplateArgumentListInfo(D->getTemplateArgsAsWritten()); 1516 1517 // These are read/set from/to the first declaration. 1518 if (D->getPreviousDecl() == nullptr) { 1519 Record.AddDeclRef(D->getInstantiatedFromMember()); 1520 Record.push_back(D->isMemberSpecialization()); 1521 } 1522 1523 Code = serialization::DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION; 1524 } 1525 1526 void ASTDeclWriter::VisitClassScopeFunctionSpecializationDecl( 1527 ClassScopeFunctionSpecializationDecl *D) { 1528 VisitDecl(D); 1529 Record.AddDeclRef(D->getSpecialization()); 1530 Code = serialization::DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION; 1531 } 1532 1533 1534 void ASTDeclWriter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) { 1535 VisitRedeclarableTemplateDecl(D); 1536 1537 if (D->isFirstDecl()) 1538 AddTemplateSpecializations(D); 1539 Code = serialization::DECL_FUNCTION_TEMPLATE; 1540 } 1541 1542 void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) { 1543 VisitTypeDecl(D); 1544 1545 Record.push_back(D->wasDeclaredWithTypename()); 1546 1547 bool OwnsDefaultArg = D->hasDefaultArgument() && 1548 !D->defaultArgumentWasInherited(); 1549 Record.push_back(OwnsDefaultArg); 1550 if (OwnsDefaultArg) 1551 Record.AddTypeSourceInfo(D->getDefaultArgumentInfo()); 1552 1553 Code = serialization::DECL_TEMPLATE_TYPE_PARM; 1554 } 1555 1556 void ASTDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { 1557 // For an expanded parameter pack, record the number of expansion types here 1558 // so that it's easier for deserialization to allocate the right amount of 1559 // memory. 1560 if (D->isExpandedParameterPack()) 1561 Record.push_back(D->getNumExpansionTypes()); 1562 1563 VisitDeclaratorDecl(D); 1564 // TemplateParmPosition. 1565 Record.push_back(D->getDepth()); 1566 Record.push_back(D->getPosition()); 1567 1568 if (D->isExpandedParameterPack()) { 1569 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) { 1570 Record.AddTypeRef(D->getExpansionType(I)); 1571 Record.AddTypeSourceInfo(D->getExpansionTypeSourceInfo(I)); 1572 } 1573 1574 Code = serialization::DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK; 1575 } else { 1576 // Rest of NonTypeTemplateParmDecl. 1577 Record.push_back(D->isParameterPack()); 1578 bool OwnsDefaultArg = D->hasDefaultArgument() && 1579 !D->defaultArgumentWasInherited(); 1580 Record.push_back(OwnsDefaultArg); 1581 if (OwnsDefaultArg) 1582 Record.AddStmt(D->getDefaultArgument()); 1583 Code = serialization::DECL_NON_TYPE_TEMPLATE_PARM; 1584 } 1585 } 1586 1587 void ASTDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) { 1588 // For an expanded parameter pack, record the number of expansion types here 1589 // so that it's easier for deserialization to allocate the right amount of 1590 // memory. 1591 if (D->isExpandedParameterPack()) 1592 Record.push_back(D->getNumExpansionTemplateParameters()); 1593 1594 VisitTemplateDecl(D); 1595 // TemplateParmPosition. 1596 Record.push_back(D->getDepth()); 1597 Record.push_back(D->getPosition()); 1598 1599 if (D->isExpandedParameterPack()) { 1600 for (unsigned I = 0, N = D->getNumExpansionTemplateParameters(); 1601 I != N; ++I) 1602 Record.AddTemplateParameterList(D->getExpansionTemplateParameters(I)); 1603 Code = serialization::DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK; 1604 } else { 1605 // Rest of TemplateTemplateParmDecl. 1606 Record.push_back(D->isParameterPack()); 1607 bool OwnsDefaultArg = D->hasDefaultArgument() && 1608 !D->defaultArgumentWasInherited(); 1609 Record.push_back(OwnsDefaultArg); 1610 if (OwnsDefaultArg) 1611 Record.AddTemplateArgumentLoc(D->getDefaultArgument()); 1612 Code = serialization::DECL_TEMPLATE_TEMPLATE_PARM; 1613 } 1614 } 1615 1616 void ASTDeclWriter::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) { 1617 VisitRedeclarableTemplateDecl(D); 1618 Code = serialization::DECL_TYPE_ALIAS_TEMPLATE; 1619 } 1620 1621 void ASTDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) { 1622 VisitDecl(D); 1623 Record.AddStmt(D->getAssertExpr()); 1624 Record.push_back(D->isFailed()); 1625 Record.AddStmt(D->getMessage()); 1626 Record.AddSourceLocation(D->getRParenLoc()); 1627 Code = serialization::DECL_STATIC_ASSERT; 1628 } 1629 1630 /// \brief Emit the DeclContext part of a declaration context decl. 1631 void ASTDeclWriter::VisitDeclContext(DeclContext *DC) { 1632 Record.AddOffset(Writer.WriteDeclContextLexicalBlock(Context, DC)); 1633 Record.AddOffset(Writer.WriteDeclContextVisibleBlock(Context, DC)); 1634 } 1635 1636 const Decl *ASTWriter::getFirstLocalDecl(const Decl *D) { 1637 assert(IsLocalDecl(D) && "expected a local declaration"); 1638 1639 const Decl *Canon = D->getCanonicalDecl(); 1640 if (IsLocalDecl(Canon)) 1641 return Canon; 1642 1643 const Decl *&CacheEntry = FirstLocalDeclCache[Canon]; 1644 if (CacheEntry) 1645 return CacheEntry; 1646 1647 for (const Decl *Redecl = D; Redecl; Redecl = Redecl->getPreviousDecl()) 1648 if (IsLocalDecl(Redecl)) 1649 D = Redecl; 1650 return CacheEntry = D; 1651 } 1652 1653 template <typename T> 1654 void ASTDeclWriter::VisitRedeclarable(Redeclarable<T> *D) { 1655 T *First = D->getFirstDecl(); 1656 T *MostRecent = First->getMostRecentDecl(); 1657 T *DAsT = static_cast<T *>(D); 1658 if (MostRecent != First) { 1659 assert(isRedeclarableDeclKind(DAsT->getKind()) && 1660 "Not considered redeclarable?"); 1661 1662 Record.AddDeclRef(First); 1663 1664 // Write out a list of local redeclarations of this declaration if it's the 1665 // first local declaration in the chain. 1666 const Decl *FirstLocal = Writer.getFirstLocalDecl(DAsT); 1667 if (DAsT == FirstLocal) { 1668 // Emit a list of all imported first declarations so that we can be sure 1669 // that all redeclarations visible to this module are before D in the 1670 // redecl chain. 1671 unsigned I = Record.size(); 1672 Record.push_back(0); 1673 if (Writer.Chain) 1674 AddFirstDeclFromEachModule(DAsT, /*IncludeLocal*/false); 1675 // This is the number of imported first declarations + 1. 1676 Record[I] = Record.size() - I; 1677 1678 // Collect the set of local redeclarations of this declaration, from 1679 // newest to oldest. 1680 ASTWriter::RecordData LocalRedecls; 1681 ASTRecordWriter LocalRedeclWriter(Record, LocalRedecls); 1682 for (const Decl *Prev = FirstLocal->getMostRecentDecl(); 1683 Prev != FirstLocal; Prev = Prev->getPreviousDecl()) 1684 if (!Prev->isFromASTFile()) 1685 LocalRedeclWriter.AddDeclRef(Prev); 1686 1687 // If we have any redecls, write them now as a separate record preceding 1688 // the declaration itself. 1689 if (LocalRedecls.empty()) 1690 Record.push_back(0); 1691 else 1692 Record.AddOffset(LocalRedeclWriter.Emit(LOCAL_REDECLARATIONS)); 1693 } else { 1694 Record.push_back(0); 1695 Record.AddDeclRef(FirstLocal); 1696 } 1697 1698 // Make sure that we serialize both the previous and the most-recent 1699 // declarations, which (transitively) ensures that all declarations in the 1700 // chain get serialized. 1701 // 1702 // FIXME: This is not correct; when we reach an imported declaration we 1703 // won't emit its previous declaration. 1704 (void)Writer.GetDeclRef(D->getPreviousDecl()); 1705 (void)Writer.GetDeclRef(MostRecent); 1706 } else { 1707 // We use the sentinel value 0 to indicate an only declaration. 1708 Record.push_back(0); 1709 } 1710 } 1711 1712 void ASTDeclWriter::VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D) { 1713 Record.push_back(D->varlist_size()); 1714 VisitDecl(D); 1715 for (auto *I : D->varlists()) 1716 Record.AddStmt(I); 1717 Code = serialization::DECL_OMP_THREADPRIVATE; 1718 } 1719 1720 void ASTDeclWriter::VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D) { 1721 VisitValueDecl(D); 1722 Record.AddSourceLocation(D->getLocStart()); 1723 Record.AddStmt(D->getCombiner()); 1724 Record.AddStmt(D->getInitializer()); 1725 Record.push_back(D->getInitializerKind()); 1726 Record.AddDeclRef(D->getPrevDeclInScope()); 1727 Code = serialization::DECL_OMP_DECLARE_REDUCTION; 1728 } 1729 1730 void ASTDeclWriter::VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D) { 1731 VisitVarDecl(D); 1732 Code = serialization::DECL_OMP_CAPTUREDEXPR; 1733 } 1734 1735 //===----------------------------------------------------------------------===// 1736 // ASTWriter Implementation 1737 //===----------------------------------------------------------------------===// 1738 1739 void ASTWriter::WriteDeclAbbrevs() { 1740 using namespace llvm; 1741 1742 std::shared_ptr<BitCodeAbbrev> Abv; 1743 1744 // Abbreviation for DECL_FIELD 1745 Abv = std::make_shared<BitCodeAbbrev>(); 1746 Abv->Add(BitCodeAbbrevOp(serialization::DECL_FIELD)); 1747 // Decl 1748 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1749 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1750 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1751 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1752 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1753 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1754 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1755 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1756 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier 1757 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1758 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1759 // NamedDecl 1760 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1761 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1762 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1763 // ValueDecl 1764 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1765 // DeclaratorDecl 1766 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1767 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1768 // FieldDecl 1769 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 1770 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle 1771 // Type Source Info 1772 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1773 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1774 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1775 DeclFieldAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1776 1777 // Abbreviation for DECL_OBJC_IVAR 1778 Abv = std::make_shared<BitCodeAbbrev>(); 1779 Abv->Add(BitCodeAbbrevOp(serialization::DECL_OBJC_IVAR)); 1780 // Decl 1781 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1782 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1783 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1784 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1785 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1786 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1787 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1788 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1789 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // AccessSpecifier 1790 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1791 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1792 // NamedDecl 1793 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1794 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1795 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1796 // ValueDecl 1797 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1798 // DeclaratorDecl 1799 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1800 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1801 // FieldDecl 1802 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 1803 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle 1804 // ObjC Ivar 1805 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getAccessControl 1806 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getSynthesize 1807 // Type Source Info 1808 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1809 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1810 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1811 DeclObjCIvarAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1812 1813 // Abbreviation for DECL_ENUM 1814 Abv = std::make_shared<BitCodeAbbrev>(); 1815 Abv->Add(BitCodeAbbrevOp(serialization::DECL_ENUM)); 1816 // Redeclarable 1817 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1818 // Decl 1819 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1820 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1821 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1822 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1823 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1824 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1825 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1826 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1827 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1828 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1829 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1830 // NamedDecl 1831 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1832 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1833 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1834 // TypeDecl 1835 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1836 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1837 // TagDecl 1838 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 1839 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind 1840 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition 1841 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator 1842 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding 1843 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired 1844 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1845 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1846 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind 1847 // EnumDecl 1848 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // AddTypeRef 1849 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IntegerType 1850 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getPromotionType 1851 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumPositiveBits 1852 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getNumNegativeBits 1853 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScoped 1854 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isScopedUsingClassTag 1855 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isFixed 1856 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InstantiatedMembEnum 1857 // DC 1858 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 1859 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 1860 DeclEnumAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1861 1862 // Abbreviation for DECL_RECORD 1863 Abv = std::make_shared<BitCodeAbbrev>(); 1864 Abv->Add(BitCodeAbbrevOp(serialization::DECL_RECORD)); 1865 // Redeclarable 1866 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1867 // Decl 1868 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1869 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1870 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1871 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1872 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1873 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1874 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1875 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1876 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1877 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1878 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1879 // NamedDecl 1880 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1881 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1882 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1883 // TypeDecl 1884 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1885 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1886 // TagDecl 1887 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 1888 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getTagKind 1889 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCompleteDefinition 1890 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // EmbeddedInDeclarator 1891 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFreeStanding 1892 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsCompleteDefinitionRequired 1893 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1894 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 1895 Abv->Add(BitCodeAbbrevOp(0)); // ExtInfoKind 1896 // RecordDecl 1897 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // FlexibleArrayMember 1898 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // AnonymousStructUnion 1899 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasObjectMember 1900 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // hasVolatileMember 1901 // DC 1902 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 1903 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 1904 DeclRecordAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1905 1906 // Abbreviation for DECL_PARM_VAR 1907 Abv = std::make_shared<BitCodeAbbrev>(); 1908 Abv->Add(BitCodeAbbrevOp(serialization::DECL_PARM_VAR)); 1909 // Redeclarable 1910 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1911 // Decl 1912 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1913 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1914 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1915 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1916 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1917 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1918 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1919 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1920 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1921 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1922 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1923 // NamedDecl 1924 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1925 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1926 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1927 // ValueDecl 1928 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 1929 // DeclaratorDecl 1930 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 1931 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 1932 // VarDecl 1933 Abv->Add(BitCodeAbbrevOp(0)); // SClass 1934 Abv->Add(BitCodeAbbrevOp(0)); // TSCSpec 1935 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle 1936 Abv->Add(BitCodeAbbrevOp(0)); // Linkage 1937 Abv->Add(BitCodeAbbrevOp(0)); // HasInit 1938 Abv->Add(BitCodeAbbrevOp(0)); // HasMemberSpecializationInfo 1939 // ParmVarDecl 1940 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsObjCMethodParameter 1941 Abv->Add(BitCodeAbbrevOp(0)); // ScopeDepth 1942 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ScopeIndex 1943 Abv->Add(BitCodeAbbrevOp(0)); // ObjCDeclQualifier 1944 Abv->Add(BitCodeAbbrevOp(0)); // KNRPromoted 1945 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedDefaultArg 1946 Abv->Add(BitCodeAbbrevOp(0)); // HasUninstantiatedDefaultArg 1947 // Type Source Info 1948 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 1949 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1950 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1951 DeclParmVarAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1952 1953 // Abbreviation for DECL_TYPEDEF 1954 Abv = std::make_shared<BitCodeAbbrev>(); 1955 Abv->Add(BitCodeAbbrevOp(serialization::DECL_TYPEDEF)); 1956 // Redeclarable 1957 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1958 // Decl 1959 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1960 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1961 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1962 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1963 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1964 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isUsed 1965 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isReferenced 1966 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1967 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // C++ AccessSpecifier 1968 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1969 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1970 // NamedDecl 1971 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 1972 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 1973 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 1974 // TypeDecl 1975 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 1976 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 1977 // TypedefDecl 1978 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 1979 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 1980 DeclTypedefAbbrev = Stream.EmitAbbrev(std::move(Abv)); 1981 1982 // Abbreviation for DECL_VAR 1983 Abv = std::make_shared<BitCodeAbbrev>(); 1984 Abv->Add(BitCodeAbbrevOp(serialization::DECL_VAR)); 1985 // Redeclarable 1986 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 1987 // Decl 1988 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 1989 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 1990 Abv->Add(BitCodeAbbrevOp(0)); // isInvalidDecl 1991 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 1992 Abv->Add(BitCodeAbbrevOp(0)); // isImplicit 1993 Abv->Add(BitCodeAbbrevOp(0)); // isUsed 1994 Abv->Add(BitCodeAbbrevOp(0)); // isReferenced 1995 Abv->Add(BitCodeAbbrevOp(0)); // TopLevelDeclInObjCContainer 1996 Abv->Add(BitCodeAbbrevOp(AS_none)); // C++ AccessSpecifier 1997 Abv->Add(BitCodeAbbrevOp(0)); // ModulePrivate 1998 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 1999 // NamedDecl 2000 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 2001 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 2002 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2003 // ValueDecl 2004 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2005 // DeclaratorDecl 2006 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 2007 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 2008 // VarDecl 2009 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // SClass 2010 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // TSCSpec 2011 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // InitStyle 2012 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsThisDeclarationADemotedDefinition 2013 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isExceptionVariable 2014 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isNRVOVariable 2015 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isCXXForRangeDecl 2016 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isARCPseudoStrong 2017 Abv->Add(BitCodeAbbrevOp(0)); // isInline 2018 Abv->Add(BitCodeAbbrevOp(0)); // isInlineSpecified 2019 Abv->Add(BitCodeAbbrevOp(0)); // isConstexpr 2020 Abv->Add(BitCodeAbbrevOp(0)); // isInitCapture 2021 Abv->Add(BitCodeAbbrevOp(0)); // isPrevDeclInSameScope 2022 Abv->Add(BitCodeAbbrevOp(0)); // ImplicitParamKind 2023 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage 2024 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // IsInitICE (local) 2025 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // VarKind (local enum) 2026 // Type Source Info 2027 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 2028 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 2029 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 2030 DeclVarAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2031 2032 // Abbreviation for DECL_CXX_METHOD 2033 Abv = std::make_shared<BitCodeAbbrev>(); 2034 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CXX_METHOD)); 2035 // RedeclarableDecl 2036 Abv->Add(BitCodeAbbrevOp(0)); // CanonicalDecl 2037 // Decl 2038 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 2039 Abv->Add(BitCodeAbbrevOp(0)); // LexicalDeclContext 2040 Abv->Add(BitCodeAbbrevOp(0)); // Invalid 2041 Abv->Add(BitCodeAbbrevOp(0)); // HasAttrs 2042 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Implicit 2043 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Used 2044 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Referenced 2045 Abv->Add(BitCodeAbbrevOp(0)); // InObjCContainer 2046 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Access 2047 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModulePrivate 2048 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2049 // NamedDecl 2050 Abv->Add(BitCodeAbbrevOp(DeclarationName::Identifier)); // NameKind 2051 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Identifier 2052 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2053 // ValueDecl 2054 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2055 // DeclaratorDecl 2056 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerLocStart 2057 Abv->Add(BitCodeAbbrevOp(0)); // HasExtInfo 2058 // FunctionDecl 2059 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 11)); // IDNS 2060 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // StorageClass 2061 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Inline 2062 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InlineSpecified 2063 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ExplicitSpecified 2064 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // VirtualAsWritten 2065 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Pure 2066 Abv->Add(BitCodeAbbrevOp(0)); // HasInheritedProto 2067 Abv->Add(BitCodeAbbrevOp(1)); // HasWrittenProto 2068 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Deleted 2069 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Trivial 2070 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Defaulted 2071 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ExplicitlyDefaulted 2072 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ImplicitReturnZero 2073 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Constexpr 2074 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // UsesSEHTry 2075 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // SkippedBody 2076 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // MultiVersion 2077 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // LateParsed 2078 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Linkage 2079 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LocEnd 2080 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // ODRHash 2081 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // TemplateKind 2082 // This Array slurps the rest of the record. Fortunately we want to encode 2083 // (nearly) all the remaining (variable number of) fields in the same way. 2084 // 2085 // This is the function template information if any, then 2086 // NumParams and Params[] from FunctionDecl, and 2087 // NumOverriddenMethods, OverriddenMethods[] from CXXMethodDecl. 2088 // 2089 // Add an AbbrevOp for 'size then elements' and use it here. 2090 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 2091 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 2092 DeclCXXMethodAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2093 2094 // Abbreviation for EXPR_DECL_REF 2095 Abv = std::make_shared<BitCodeAbbrev>(); 2096 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_DECL_REF)); 2097 //Stmt 2098 //Expr 2099 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2100 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 2101 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 2102 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 2103 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 2104 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 2105 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 2106 //DeclRefExpr 2107 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HasQualifier 2108 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //GetDeclFound 2109 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ExplicitTemplateArgs 2110 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //HadMultipleCandidates 2111 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2112 1)); // RefersToEnclosingVariableOrCapture 2113 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclRef 2114 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 2115 DeclRefExprAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2116 2117 // Abbreviation for EXPR_INTEGER_LITERAL 2118 Abv = std::make_shared<BitCodeAbbrev>(); 2119 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_INTEGER_LITERAL)); 2120 //Stmt 2121 //Expr 2122 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2123 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 2124 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 2125 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 2126 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 2127 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 2128 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 2129 //Integer Literal 2130 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 2131 Abv->Add(BitCodeAbbrevOp(32)); // Bit Width 2132 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Value 2133 IntegerLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2134 2135 // Abbreviation for EXPR_CHARACTER_LITERAL 2136 Abv = std::make_shared<BitCodeAbbrev>(); 2137 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CHARACTER_LITERAL)); 2138 //Stmt 2139 //Expr 2140 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2141 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 2142 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 2143 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 2144 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 2145 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 2146 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 2147 //Character Literal 2148 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getValue 2149 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 2150 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // getKind 2151 CharacterLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2152 2153 // Abbreviation for EXPR_IMPLICIT_CAST 2154 Abv = std::make_shared<BitCodeAbbrev>(); 2155 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_IMPLICIT_CAST)); 2156 // Stmt 2157 // Expr 2158 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2159 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //TypeDependent 2160 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //ValueDependent 2161 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //InstantiationDependent 2162 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); //UnexpandedParamPack 2163 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetValueKind 2164 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); //GetObjectKind 2165 // CastExpr 2166 Abv->Add(BitCodeAbbrevOp(0)); // PathSize 2167 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 6)); // CastKind 2168 // ImplicitCastExpr 2169 ExprImplicitCastAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2170 2171 Abv = std::make_shared<BitCodeAbbrev>(); 2172 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_LEXICAL)); 2173 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2174 DeclContextLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2175 2176 Abv = std::make_shared<BitCodeAbbrev>(); 2177 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_VISIBLE)); 2178 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2179 DeclContextVisibleLookupAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2180 } 2181 2182 /// isRequiredDecl - Check if this is a "required" Decl, which must be seen by 2183 /// consumers of the AST. 2184 /// 2185 /// Such decls will always be deserialized from the AST file, so we would like 2186 /// this to be as restrictive as possible. Currently the predicate is driven by 2187 /// code generation requirements, if other clients have a different notion of 2188 /// what is "required" then we may have to consider an alternate scheme where 2189 /// clients can iterate over the top-level decls and get information on them, 2190 /// without necessary deserializing them. We could explicitly require such 2191 /// clients to use a separate API call to "realize" the decl. This should be 2192 /// relatively painless since they would presumably only do it for top-level 2193 /// decls. 2194 static bool isRequiredDecl(const Decl *D, ASTContext &Context, 2195 bool WritingModule) { 2196 // An ObjCMethodDecl is never considered as "required" because its 2197 // implementation container always is. 2198 2199 // File scoped assembly or obj-c or OMP declare target implementation must be 2200 // seen. 2201 if (isa<FileScopeAsmDecl>(D) || isa<ObjCImplDecl>(D) || 2202 D->hasAttr<OMPDeclareTargetDeclAttr>()) 2203 return true; 2204 2205 if (WritingModule && (isa<VarDecl>(D) || isa<ImportDecl>(D))) { 2206 // These declarations are part of the module initializer, and are emitted 2207 // if and when the module is imported, rather than being emitted eagerly. 2208 return false; 2209 } 2210 2211 return Context.DeclMustBeEmitted(D); 2212 } 2213 2214 void ASTWriter::WriteDecl(ASTContext &Context, Decl *D) { 2215 // Determine the ID for this declaration. 2216 serialization::DeclID ID; 2217 assert(!D->isFromASTFile() && "should not be emitting imported decl"); 2218 serialization::DeclID &IDR = DeclIDs[D]; 2219 if (IDR == 0) 2220 IDR = NextDeclID++; 2221 2222 ID = IDR; 2223 2224 assert(ID >= FirstDeclID && "invalid decl ID"); 2225 2226 RecordData Record; 2227 ASTDeclWriter W(*this, Context, Record); 2228 2229 // Build a record for this declaration 2230 W.Visit(D); 2231 2232 // Emit this declaration to the bitstream. 2233 uint64_t Offset = W.Emit(D); 2234 2235 // Record the offset for this declaration 2236 SourceLocation Loc = D->getLocation(); 2237 unsigned Index = ID - FirstDeclID; 2238 if (DeclOffsets.size() == Index) 2239 DeclOffsets.push_back(DeclOffset(Loc, Offset)); 2240 else if (DeclOffsets.size() < Index) { 2241 // FIXME: Can/should this happen? 2242 DeclOffsets.resize(Index+1); 2243 DeclOffsets[Index].setLocation(Loc); 2244 DeclOffsets[Index].BitOffset = Offset; 2245 } else { 2246 llvm_unreachable("declarations should be emitted in ID order"); 2247 } 2248 2249 SourceManager &SM = Context.getSourceManager(); 2250 if (Loc.isValid() && SM.isLocalSourceLocation(Loc)) 2251 associateDeclWithFile(D, ID); 2252 2253 // Note declarations that should be deserialized eagerly so that we can add 2254 // them to a record in the AST file later. 2255 if (isRequiredDecl(D, Context, WritingModule)) 2256 EagerlyDeserializedDecls.push_back(ID); 2257 } 2258 2259 void ASTRecordWriter::AddFunctionDefinition(const FunctionDecl *FD) { 2260 // Switch case IDs are per function body. 2261 Writer->ClearSwitchCaseIDs(); 2262 2263 assert(FD->doesThisDeclarationHaveABody()); 2264 bool ModulesCodegen = false; 2265 if (Writer->WritingModule && !FD->isDependentContext()) { 2266 Optional<GVALinkage> Linkage; 2267 if (Writer->WritingModule->Kind == Module::ModuleInterfaceUnit) { 2268 // When building a C++ Modules TS module interface unit, a strong 2269 // definition in the module interface is provided by the compilation of 2270 // that module interface unit, not by its users. (Inline functions are 2271 // still emitted in module users.) 2272 Linkage = Writer->Context->GetGVALinkageForFunction(FD); 2273 ModulesCodegen = *Linkage == GVA_StrongExternal; 2274 } 2275 if (Writer->Context->getLangOpts().ModulesCodegen) { 2276 // Under -fmodules-codegen, codegen is performed for all non-internal, 2277 // non-always_inline functions. 2278 if (!FD->hasAttr<AlwaysInlineAttr>()) { 2279 if (!Linkage) 2280 Linkage = Writer->Context->GetGVALinkageForFunction(FD); 2281 ModulesCodegen = *Linkage != GVA_Internal; 2282 } 2283 } 2284 } 2285 Record->push_back(ModulesCodegen); 2286 if (ModulesCodegen) 2287 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(FD)); 2288 if (auto *CD = dyn_cast<CXXConstructorDecl>(FD)) { 2289 Record->push_back(CD->getNumCtorInitializers()); 2290 if (CD->getNumCtorInitializers()) 2291 AddCXXCtorInitializers( 2292 llvm::makeArrayRef(CD->init_begin(), CD->init_end())); 2293 } 2294 AddStmt(FD->getBody()); 2295 } 2296