1 //===--- ASTWriterDecl.cpp - Declaration Serialization --------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file implements serialization for Declarations. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "ASTCommon.h" 14 #include "clang/AST/Attr.h" 15 #include "clang/AST/DeclCXX.h" 16 #include "clang/AST/DeclTemplate.h" 17 #include "clang/AST/DeclVisitor.h" 18 #include "clang/AST/Expr.h" 19 #include "clang/AST/OpenMPClause.h" 20 #include "clang/AST/PrettyDeclStackTrace.h" 21 #include "clang/Basic/SourceManager.h" 22 #include "clang/Serialization/ASTReader.h" 23 #include "clang/Serialization/ASTRecordWriter.h" 24 #include "llvm/Bitstream/BitstreamWriter.h" 25 #include "llvm/Support/ErrorHandling.h" 26 #include <optional> 27 using namespace clang; 28 using namespace serialization; 29 30 //===----------------------------------------------------------------------===// 31 // Declaration serialization 32 //===----------------------------------------------------------------------===// 33 34 namespace clang { 35 class ASTDeclWriter : public DeclVisitor<ASTDeclWriter, void> { 36 ASTWriter &Writer; 37 ASTContext &Context; 38 ASTRecordWriter Record; 39 40 serialization::DeclCode Code; 41 unsigned AbbrevToUse; 42 43 bool GeneratingReducedBMI = false; 44 45 public: 46 ASTDeclWriter(ASTWriter &Writer, ASTContext &Context, 47 ASTWriter::RecordDataImpl &Record, bool GeneratingReducedBMI) 48 : Writer(Writer), Context(Context), Record(Writer, Record), 49 Code((serialization::DeclCode)0), AbbrevToUse(0), 50 GeneratingReducedBMI(GeneratingReducedBMI) {} 51 52 uint64_t Emit(Decl *D) { 53 if (!Code) 54 llvm::report_fatal_error(StringRef("unexpected declaration kind '") + 55 D->getDeclKindName() + "'"); 56 return Record.Emit(Code, AbbrevToUse); 57 } 58 59 void Visit(Decl *D); 60 61 void VisitDecl(Decl *D); 62 void VisitPragmaCommentDecl(PragmaCommentDecl *D); 63 void VisitPragmaDetectMismatchDecl(PragmaDetectMismatchDecl *D); 64 void VisitTranslationUnitDecl(TranslationUnitDecl *D); 65 void VisitNamedDecl(NamedDecl *D); 66 void VisitLabelDecl(LabelDecl *LD); 67 void VisitNamespaceDecl(NamespaceDecl *D); 68 void VisitUsingDirectiveDecl(UsingDirectiveDecl *D); 69 void VisitNamespaceAliasDecl(NamespaceAliasDecl *D); 70 void VisitTypeDecl(TypeDecl *D); 71 void VisitTypedefNameDecl(TypedefNameDecl *D); 72 void VisitTypedefDecl(TypedefDecl *D); 73 void VisitTypeAliasDecl(TypeAliasDecl *D); 74 void VisitUnresolvedUsingTypenameDecl(UnresolvedUsingTypenameDecl *D); 75 void VisitUnresolvedUsingIfExistsDecl(UnresolvedUsingIfExistsDecl *D); 76 void VisitTagDecl(TagDecl *D); 77 void VisitEnumDecl(EnumDecl *D); 78 void VisitRecordDecl(RecordDecl *D); 79 void VisitCXXRecordDecl(CXXRecordDecl *D); 80 void VisitClassTemplateSpecializationDecl( 81 ClassTemplateSpecializationDecl *D); 82 void VisitClassTemplatePartialSpecializationDecl( 83 ClassTemplatePartialSpecializationDecl *D); 84 void VisitVarTemplateSpecializationDecl(VarTemplateSpecializationDecl *D); 85 void VisitVarTemplatePartialSpecializationDecl( 86 VarTemplatePartialSpecializationDecl *D); 87 void VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D); 88 void VisitValueDecl(ValueDecl *D); 89 void VisitEnumConstantDecl(EnumConstantDecl *D); 90 void VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D); 91 void VisitDeclaratorDecl(DeclaratorDecl *D); 92 void VisitFunctionDecl(FunctionDecl *D); 93 void VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D); 94 void VisitCXXMethodDecl(CXXMethodDecl *D); 95 void VisitCXXConstructorDecl(CXXConstructorDecl *D); 96 void VisitCXXDestructorDecl(CXXDestructorDecl *D); 97 void VisitCXXConversionDecl(CXXConversionDecl *D); 98 void VisitFieldDecl(FieldDecl *D); 99 void VisitMSPropertyDecl(MSPropertyDecl *D); 100 void VisitMSGuidDecl(MSGuidDecl *D); 101 void VisitUnnamedGlobalConstantDecl(UnnamedGlobalConstantDecl *D); 102 void VisitTemplateParamObjectDecl(TemplateParamObjectDecl *D); 103 void VisitIndirectFieldDecl(IndirectFieldDecl *D); 104 void VisitVarDecl(VarDecl *D); 105 void VisitImplicitParamDecl(ImplicitParamDecl *D); 106 void VisitParmVarDecl(ParmVarDecl *D); 107 void VisitDecompositionDecl(DecompositionDecl *D); 108 void VisitBindingDecl(BindingDecl *D); 109 void VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D); 110 void VisitTemplateDecl(TemplateDecl *D); 111 void VisitConceptDecl(ConceptDecl *D); 112 void VisitImplicitConceptSpecializationDecl( 113 ImplicitConceptSpecializationDecl *D); 114 void VisitRequiresExprBodyDecl(RequiresExprBodyDecl *D); 115 void VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D); 116 void VisitClassTemplateDecl(ClassTemplateDecl *D); 117 void VisitVarTemplateDecl(VarTemplateDecl *D); 118 void VisitFunctionTemplateDecl(FunctionTemplateDecl *D); 119 void VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D); 120 void VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D); 121 void VisitUsingDecl(UsingDecl *D); 122 void VisitUsingEnumDecl(UsingEnumDecl *D); 123 void VisitUsingPackDecl(UsingPackDecl *D); 124 void VisitUsingShadowDecl(UsingShadowDecl *D); 125 void VisitConstructorUsingShadowDecl(ConstructorUsingShadowDecl *D); 126 void VisitLinkageSpecDecl(LinkageSpecDecl *D); 127 void VisitExportDecl(ExportDecl *D); 128 void VisitFileScopeAsmDecl(FileScopeAsmDecl *D); 129 void VisitTopLevelStmtDecl(TopLevelStmtDecl *D); 130 void VisitImportDecl(ImportDecl *D); 131 void VisitAccessSpecDecl(AccessSpecDecl *D); 132 void VisitFriendDecl(FriendDecl *D); 133 void VisitFriendTemplateDecl(FriendTemplateDecl *D); 134 void VisitStaticAssertDecl(StaticAssertDecl *D); 135 void VisitBlockDecl(BlockDecl *D); 136 void VisitCapturedDecl(CapturedDecl *D); 137 void VisitEmptyDecl(EmptyDecl *D); 138 void VisitLifetimeExtendedTemporaryDecl(LifetimeExtendedTemporaryDecl *D); 139 void VisitDeclContext(DeclContext *DC); 140 template <typename T> void VisitRedeclarable(Redeclarable<T> *D); 141 void VisitHLSLBufferDecl(HLSLBufferDecl *D); 142 143 // FIXME: Put in the same order is DeclNodes.td? 144 void VisitObjCMethodDecl(ObjCMethodDecl *D); 145 void VisitObjCTypeParamDecl(ObjCTypeParamDecl *D); 146 void VisitObjCContainerDecl(ObjCContainerDecl *D); 147 void VisitObjCInterfaceDecl(ObjCInterfaceDecl *D); 148 void VisitObjCIvarDecl(ObjCIvarDecl *D); 149 void VisitObjCProtocolDecl(ObjCProtocolDecl *D); 150 void VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D); 151 void VisitObjCCategoryDecl(ObjCCategoryDecl *D); 152 void VisitObjCImplDecl(ObjCImplDecl *D); 153 void VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D); 154 void VisitObjCImplementationDecl(ObjCImplementationDecl *D); 155 void VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D); 156 void VisitObjCPropertyDecl(ObjCPropertyDecl *D); 157 void VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D); 158 void VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D); 159 void VisitOMPAllocateDecl(OMPAllocateDecl *D); 160 void VisitOMPRequiresDecl(OMPRequiresDecl *D); 161 void VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D); 162 void VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D); 163 void VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D); 164 165 /// Add an Objective-C type parameter list to the given record. 166 void AddObjCTypeParamList(ObjCTypeParamList *typeParams) { 167 // Empty type parameter list. 168 if (!typeParams) { 169 Record.push_back(0); 170 return; 171 } 172 173 Record.push_back(typeParams->size()); 174 for (auto *typeParam : *typeParams) { 175 Record.AddDeclRef(typeParam); 176 } 177 Record.AddSourceLocation(typeParams->getLAngleLoc()); 178 Record.AddSourceLocation(typeParams->getRAngleLoc()); 179 } 180 181 /// Add to the record the first declaration from each module file that 182 /// provides a declaration of D. The intent is to provide a sufficient 183 /// set such that reloading this set will load all current redeclarations. 184 void AddFirstDeclFromEachModule(const Decl *D, bool IncludeLocal) { 185 llvm::MapVector<ModuleFile*, const Decl*> Firsts; 186 // FIXME: We can skip entries that we know are implied by others. 187 for (const Decl *R = D->getMostRecentDecl(); R; R = R->getPreviousDecl()) { 188 if (R->isFromASTFile()) 189 Firsts[Writer.Chain->getOwningModuleFile(R)] = R; 190 else if (IncludeLocal) 191 Firsts[nullptr] = R; 192 } 193 for (const auto &F : Firsts) 194 Record.AddDeclRef(F.second); 195 } 196 197 /// Get the specialization decl from an entry in the specialization list. 198 template <typename EntryType> 199 typename RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::DeclType * 200 getSpecializationDecl(EntryType &T) { 201 return RedeclarableTemplateDecl::SpecEntryTraits<EntryType>::getDecl(&T); 202 } 203 204 /// Get the list of partial specializations from a template's common ptr. 205 template<typename T> 206 decltype(T::PartialSpecializations) &getPartialSpecializations(T *Common) { 207 return Common->PartialSpecializations; 208 } 209 ArrayRef<Decl> getPartialSpecializations(FunctionTemplateDecl::Common *) { 210 return std::nullopt; 211 } 212 213 template<typename DeclTy> 214 void AddTemplateSpecializations(DeclTy *D) { 215 auto *Common = D->getCommonPtr(); 216 217 // If we have any lazy specializations, and the external AST source is 218 // our chained AST reader, we can just write out the DeclIDs. Otherwise, 219 // we need to resolve them to actual declarations. 220 if (Writer.Chain != Writer.Context->getExternalSource() && 221 Common->LazySpecializations) { 222 D->LoadLazySpecializations(); 223 assert(!Common->LazySpecializations); 224 } 225 226 ArrayRef<GlobalDeclID> LazySpecializations; 227 if (auto *LS = Common->LazySpecializations) 228 LazySpecializations = llvm::ArrayRef(LS + 1, LS[0].getRawValue()); 229 230 // Add a slot to the record for the number of specializations. 231 unsigned I = Record.size(); 232 Record.push_back(0); 233 234 // AddFirstDeclFromEachModule might trigger deserialization, invalidating 235 // *Specializations iterators. 236 llvm::SmallVector<const Decl*, 16> Specs; 237 for (auto &Entry : Common->Specializations) 238 Specs.push_back(getSpecializationDecl(Entry)); 239 for (auto &Entry : getPartialSpecializations(Common)) 240 Specs.push_back(getSpecializationDecl(Entry)); 241 242 for (auto *D : Specs) { 243 assert(D->isCanonicalDecl() && "non-canonical decl in set"); 244 AddFirstDeclFromEachModule(D, /*IncludeLocal*/true); 245 } 246 Record.append( 247 DeclIDIterator<GlobalDeclID, DeclID>(LazySpecializations.begin()), 248 DeclIDIterator<GlobalDeclID, DeclID>(LazySpecializations.end())); 249 250 // Update the size entry we added earlier. 251 Record[I] = Record.size() - I - 1; 252 } 253 254 /// Ensure that this template specialization is associated with the specified 255 /// template on reload. 256 void RegisterTemplateSpecialization(const Decl *Template, 257 const Decl *Specialization) { 258 Template = Template->getCanonicalDecl(); 259 260 // If the canonical template is local, we'll write out this specialization 261 // when we emit it. 262 // FIXME: We can do the same thing if there is any local declaration of 263 // the template, to avoid emitting an update record. 264 if (!Template->isFromASTFile()) 265 return; 266 267 // We only need to associate the first local declaration of the 268 // specialization. The other declarations will get pulled in by it. 269 if (Writer.getFirstLocalDecl(Specialization) != Specialization) 270 return; 271 272 Writer.DeclUpdates[Template].push_back(ASTWriter::DeclUpdate( 273 UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION, Specialization)); 274 } 275 }; 276 } 277 278 bool clang::CanElideDeclDef(const Decl *D) { 279 if (auto *FD = dyn_cast<FunctionDecl>(D)) { 280 if (FD->isInlined() || FD->isConstexpr()) 281 return false; 282 283 if (FD->isDependentContext()) 284 return false; 285 286 if (FD->getTemplateSpecializationKind() == TSK_ImplicitInstantiation) 287 return false; 288 } 289 290 if (auto *VD = dyn_cast<VarDecl>(D)) { 291 if (!VD->getDeclContext()->getRedeclContext()->isFileContext() || 292 VD->isInline() || VD->isConstexpr() || isa<ParmVarDecl>(VD) || 293 // Constant initialized variable may not affect the ABI, but they 294 // may be used in constant evaluation in the frontend, so we have 295 // to remain them. 296 VD->hasConstantInitialization()) 297 return false; 298 299 if (VD->getTemplateSpecializationKind() == TSK_ImplicitInstantiation) 300 return false; 301 } 302 303 return true; 304 } 305 306 void ASTDeclWriter::Visit(Decl *D) { 307 DeclVisitor<ASTDeclWriter>::Visit(D); 308 309 // Source locations require array (variable-length) abbreviations. The 310 // abbreviation infrastructure requires that arrays are encoded last, so 311 // we handle it here in the case of those classes derived from DeclaratorDecl 312 if (auto *DD = dyn_cast<DeclaratorDecl>(D)) { 313 if (auto *TInfo = DD->getTypeSourceInfo()) 314 Record.AddTypeLoc(TInfo->getTypeLoc()); 315 } 316 317 // Handle FunctionDecl's body here and write it after all other Stmts/Exprs 318 // have been written. We want it last because we will not read it back when 319 // retrieving it from the AST, we'll just lazily set the offset. 320 if (auto *FD = dyn_cast<FunctionDecl>(D)) { 321 if (!GeneratingReducedBMI || !CanElideDeclDef(FD)) { 322 Record.push_back(FD->doesThisDeclarationHaveABody()); 323 if (FD->doesThisDeclarationHaveABody()) 324 Record.AddFunctionDefinition(FD); 325 } else 326 Record.push_back(0); 327 } 328 329 // Similar to FunctionDecls, handle VarDecl's initializer here and write it 330 // after all other Stmts/Exprs. We will not read the initializer until after 331 // we have finished recursive deserialization, because it can recursively 332 // refer back to the variable. 333 if (auto *VD = dyn_cast<VarDecl>(D)) { 334 if (!GeneratingReducedBMI || !CanElideDeclDef(VD)) 335 Record.AddVarDeclInit(VD); 336 else 337 Record.push_back(0); 338 } 339 340 // And similarly for FieldDecls. We already serialized whether there is a 341 // default member initializer. 342 if (auto *FD = dyn_cast<FieldDecl>(D)) { 343 if (FD->hasInClassInitializer()) { 344 if (Expr *Init = FD->getInClassInitializer()) { 345 Record.push_back(1); 346 Record.AddStmt(Init); 347 } else { 348 Record.push_back(0); 349 // Initializer has not been instantiated yet. 350 } 351 } 352 } 353 354 // If this declaration is also a DeclContext, write blocks for the 355 // declarations that lexically stored inside its context and those 356 // declarations that are visible from its context. 357 if (auto *DC = dyn_cast<DeclContext>(D)) 358 VisitDeclContext(DC); 359 } 360 361 void ASTDeclWriter::VisitDecl(Decl *D) { 362 BitsPacker DeclBits; 363 364 // The order matters here. It will be better to put the bit with higher 365 // probability to be 0 in the end of the bits. 366 // 367 // Since we're using VBR6 format to store it. 368 // It will be pretty effient if all the higher bits are 0. 369 // For example, if we need to pack 8 bits into a value and the stored value 370 // is 0xf0, the actual stored value will be 0b000111'110000, which takes 12 371 // bits actually. However, if we changed the order to be 0x0f, then we can 372 // store it as 0b001111, which takes 6 bits only now. 373 DeclBits.addBits((uint64_t)D->getModuleOwnershipKind(), /*BitWidth=*/3); 374 DeclBits.addBit(D->isReferenced()); 375 DeclBits.addBit(D->isUsed(false)); 376 DeclBits.addBits(D->getAccess(), /*BitWidth=*/2); 377 DeclBits.addBit(D->isImplicit()); 378 DeclBits.addBit(D->getDeclContext() != D->getLexicalDeclContext()); 379 DeclBits.addBit(D->hasAttrs()); 380 DeclBits.addBit(D->isTopLevelDeclInObjCContainer()); 381 DeclBits.addBit(D->isInvalidDecl()); 382 Record.push_back(DeclBits); 383 384 Record.AddDeclRef(cast_or_null<Decl>(D->getDeclContext())); 385 if (D->getDeclContext() != D->getLexicalDeclContext()) 386 Record.AddDeclRef(cast_or_null<Decl>(D->getLexicalDeclContext())); 387 388 if (D->hasAttrs()) 389 Record.AddAttributes(D->getAttrs()); 390 391 Record.push_back(Writer.getSubmoduleID(D->getOwningModule())); 392 393 // If this declaration injected a name into a context different from its 394 // lexical context, and that context is an imported namespace, we need to 395 // update its visible declarations to include this name. 396 // 397 // This happens when we instantiate a class with a friend declaration or a 398 // function with a local extern declaration, for instance. 399 // 400 // FIXME: Can we handle this in AddedVisibleDecl instead? 401 if (D->isOutOfLine()) { 402 auto *DC = D->getDeclContext(); 403 while (auto *NS = dyn_cast<NamespaceDecl>(DC->getRedeclContext())) { 404 if (!NS->isFromASTFile()) 405 break; 406 Writer.UpdatedDeclContexts.insert(NS->getPrimaryContext()); 407 if (!NS->isInlineNamespace()) 408 break; 409 DC = NS->getParent(); 410 } 411 } 412 } 413 414 void ASTDeclWriter::VisitPragmaCommentDecl(PragmaCommentDecl *D) { 415 StringRef Arg = D->getArg(); 416 Record.push_back(Arg.size()); 417 VisitDecl(D); 418 Record.AddSourceLocation(D->getBeginLoc()); 419 Record.push_back(D->getCommentKind()); 420 Record.AddString(Arg); 421 Code = serialization::DECL_PRAGMA_COMMENT; 422 } 423 424 void ASTDeclWriter::VisitPragmaDetectMismatchDecl( 425 PragmaDetectMismatchDecl *D) { 426 StringRef Name = D->getName(); 427 StringRef Value = D->getValue(); 428 Record.push_back(Name.size() + 1 + Value.size()); 429 VisitDecl(D); 430 Record.AddSourceLocation(D->getBeginLoc()); 431 Record.AddString(Name); 432 Record.AddString(Value); 433 Code = serialization::DECL_PRAGMA_DETECT_MISMATCH; 434 } 435 436 void ASTDeclWriter::VisitTranslationUnitDecl(TranslationUnitDecl *D) { 437 llvm_unreachable("Translation units aren't directly serialized"); 438 } 439 440 void ASTDeclWriter::VisitNamedDecl(NamedDecl *D) { 441 VisitDecl(D); 442 Record.AddDeclarationName(D->getDeclName()); 443 Record.push_back(needsAnonymousDeclarationNumber(D) 444 ? Writer.getAnonymousDeclarationNumber(D) 445 : 0); 446 } 447 448 void ASTDeclWriter::VisitTypeDecl(TypeDecl *D) { 449 VisitNamedDecl(D); 450 Record.AddSourceLocation(D->getBeginLoc()); 451 Record.AddTypeRef(QualType(D->getTypeForDecl(), 0)); 452 } 453 454 void ASTDeclWriter::VisitTypedefNameDecl(TypedefNameDecl *D) { 455 VisitRedeclarable(D); 456 VisitTypeDecl(D); 457 Record.AddTypeSourceInfo(D->getTypeSourceInfo()); 458 Record.push_back(D->isModed()); 459 if (D->isModed()) 460 Record.AddTypeRef(D->getUnderlyingType()); 461 Record.AddDeclRef(D->getAnonDeclWithTypedefName(false)); 462 } 463 464 void ASTDeclWriter::VisitTypedefDecl(TypedefDecl *D) { 465 VisitTypedefNameDecl(D); 466 if (D->getDeclContext() == D->getLexicalDeclContext() && 467 !D->hasAttrs() && 468 !D->isImplicit() && 469 D->getFirstDecl() == D->getMostRecentDecl() && 470 !D->isInvalidDecl() && 471 !D->isTopLevelDeclInObjCContainer() && 472 !D->isModulePrivate() && 473 !needsAnonymousDeclarationNumber(D) && 474 D->getDeclName().getNameKind() == DeclarationName::Identifier) 475 AbbrevToUse = Writer.getDeclTypedefAbbrev(); 476 477 Code = serialization::DECL_TYPEDEF; 478 } 479 480 void ASTDeclWriter::VisitTypeAliasDecl(TypeAliasDecl *D) { 481 VisitTypedefNameDecl(D); 482 Record.AddDeclRef(D->getDescribedAliasTemplate()); 483 Code = serialization::DECL_TYPEALIAS; 484 } 485 486 void ASTDeclWriter::VisitTagDecl(TagDecl *D) { 487 static_assert(DeclContext::NumTagDeclBits == 23, 488 "You need to update the serializer after you change the " 489 "TagDeclBits"); 490 491 VisitRedeclarable(D); 492 VisitTypeDecl(D); 493 Record.push_back(D->getIdentifierNamespace()); 494 495 BitsPacker TagDeclBits; 496 TagDeclBits.addBits(llvm::to_underlying(D->getTagKind()), /*BitWidth=*/3); 497 TagDeclBits.addBit(!isa<CXXRecordDecl>(D) ? D->isCompleteDefinition() : 0); 498 TagDeclBits.addBit(D->isEmbeddedInDeclarator()); 499 TagDeclBits.addBit(D->isFreeStanding()); 500 TagDeclBits.addBit(D->isCompleteDefinitionRequired()); 501 TagDeclBits.addBits( 502 D->hasExtInfo() ? 1 : (D->getTypedefNameForAnonDecl() ? 2 : 0), 503 /*BitWidth=*/2); 504 Record.push_back(TagDeclBits); 505 506 Record.AddSourceRange(D->getBraceRange()); 507 508 if (D->hasExtInfo()) { 509 Record.AddQualifierInfo(*D->getExtInfo()); 510 } else if (auto *TD = D->getTypedefNameForAnonDecl()) { 511 Record.AddDeclRef(TD); 512 Record.AddIdentifierRef(TD->getDeclName().getAsIdentifierInfo()); 513 } 514 } 515 516 void ASTDeclWriter::VisitEnumDecl(EnumDecl *D) { 517 static_assert(DeclContext::NumEnumDeclBits == 43, 518 "You need to update the serializer after you change the " 519 "EnumDeclBits"); 520 521 VisitTagDecl(D); 522 Record.AddTypeSourceInfo(D->getIntegerTypeSourceInfo()); 523 if (!D->getIntegerTypeSourceInfo()) 524 Record.AddTypeRef(D->getIntegerType()); 525 Record.AddTypeRef(D->getPromotionType()); 526 527 BitsPacker EnumDeclBits; 528 EnumDeclBits.addBits(D->getNumPositiveBits(), /*BitWidth=*/8); 529 EnumDeclBits.addBits(D->getNumNegativeBits(), /*BitWidth=*/8); 530 EnumDeclBits.addBit(D->isScoped()); 531 EnumDeclBits.addBit(D->isScopedUsingClassTag()); 532 EnumDeclBits.addBit(D->isFixed()); 533 Record.push_back(EnumDeclBits); 534 535 Record.push_back(D->getODRHash()); 536 537 if (MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo()) { 538 Record.AddDeclRef(MemberInfo->getInstantiatedFrom()); 539 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 540 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation()); 541 } else { 542 Record.AddDeclRef(nullptr); 543 } 544 545 if (D->getDeclContext() == D->getLexicalDeclContext() && !D->hasAttrs() && 546 !D->isInvalidDecl() && !D->isImplicit() && !D->hasExtInfo() && 547 !D->getTypedefNameForAnonDecl() && 548 D->getFirstDecl() == D->getMostRecentDecl() && 549 !D->isTopLevelDeclInObjCContainer() && 550 !CXXRecordDecl::classofKind(D->getKind()) && 551 !D->getIntegerTypeSourceInfo() && !D->getMemberSpecializationInfo() && 552 !needsAnonymousDeclarationNumber(D) && 553 D->getDeclName().getNameKind() == DeclarationName::Identifier) 554 AbbrevToUse = Writer.getDeclEnumAbbrev(); 555 556 Code = serialization::DECL_ENUM; 557 } 558 559 void ASTDeclWriter::VisitRecordDecl(RecordDecl *D) { 560 static_assert(DeclContext::NumRecordDeclBits == 64, 561 "You need to update the serializer after you change the " 562 "RecordDeclBits"); 563 564 VisitTagDecl(D); 565 566 BitsPacker RecordDeclBits; 567 RecordDeclBits.addBit(D->hasFlexibleArrayMember()); 568 RecordDeclBits.addBit(D->isAnonymousStructOrUnion()); 569 RecordDeclBits.addBit(D->hasObjectMember()); 570 RecordDeclBits.addBit(D->hasVolatileMember()); 571 RecordDeclBits.addBit(D->isNonTrivialToPrimitiveDefaultInitialize()); 572 RecordDeclBits.addBit(D->isNonTrivialToPrimitiveCopy()); 573 RecordDeclBits.addBit(D->isNonTrivialToPrimitiveDestroy()); 574 RecordDeclBits.addBit(D->hasNonTrivialToPrimitiveDefaultInitializeCUnion()); 575 RecordDeclBits.addBit(D->hasNonTrivialToPrimitiveDestructCUnion()); 576 RecordDeclBits.addBit(D->hasNonTrivialToPrimitiveCopyCUnion()); 577 RecordDeclBits.addBit(D->isParamDestroyedInCallee()); 578 RecordDeclBits.addBits(llvm::to_underlying(D->getArgPassingRestrictions()), 2); 579 Record.push_back(RecordDeclBits); 580 581 // Only compute this for C/Objective-C, in C++ this is computed as part 582 // of CXXRecordDecl. 583 if (!isa<CXXRecordDecl>(D)) 584 Record.push_back(D->getODRHash()); 585 586 if (D->getDeclContext() == D->getLexicalDeclContext() && !D->hasAttrs() && 587 !D->isImplicit() && !D->isInvalidDecl() && !D->hasExtInfo() && 588 !D->getTypedefNameForAnonDecl() && 589 D->getFirstDecl() == D->getMostRecentDecl() && 590 !D->isTopLevelDeclInObjCContainer() && 591 !CXXRecordDecl::classofKind(D->getKind()) && 592 !needsAnonymousDeclarationNumber(D) && 593 D->getDeclName().getNameKind() == DeclarationName::Identifier) 594 AbbrevToUse = Writer.getDeclRecordAbbrev(); 595 596 Code = serialization::DECL_RECORD; 597 } 598 599 void ASTDeclWriter::VisitValueDecl(ValueDecl *D) { 600 VisitNamedDecl(D); 601 Record.AddTypeRef(D->getType()); 602 } 603 604 void ASTDeclWriter::VisitEnumConstantDecl(EnumConstantDecl *D) { 605 VisitValueDecl(D); 606 Record.push_back(D->getInitExpr()? 1 : 0); 607 if (D->getInitExpr()) 608 Record.AddStmt(D->getInitExpr()); 609 Record.AddAPSInt(D->getInitVal()); 610 611 Code = serialization::DECL_ENUM_CONSTANT; 612 } 613 614 void ASTDeclWriter::VisitDeclaratorDecl(DeclaratorDecl *D) { 615 VisitValueDecl(D); 616 Record.AddSourceLocation(D->getInnerLocStart()); 617 Record.push_back(D->hasExtInfo()); 618 if (D->hasExtInfo()) { 619 DeclaratorDecl::ExtInfo *Info = D->getExtInfo(); 620 Record.AddQualifierInfo(*Info); 621 Record.AddStmt(Info->TrailingRequiresClause); 622 } 623 // The location information is deferred until the end of the record. 624 Record.AddTypeRef(D->getTypeSourceInfo() ? D->getTypeSourceInfo()->getType() 625 : QualType()); 626 } 627 628 void ASTDeclWriter::VisitFunctionDecl(FunctionDecl *D) { 629 static_assert(DeclContext::NumFunctionDeclBits == 44, 630 "You need to update the serializer after you change the " 631 "FunctionDeclBits"); 632 633 VisitRedeclarable(D); 634 635 Record.push_back(D->getTemplatedKind()); 636 switch (D->getTemplatedKind()) { 637 case FunctionDecl::TK_NonTemplate: 638 break; 639 case FunctionDecl::TK_DependentNonTemplate: 640 Record.AddDeclRef(D->getInstantiatedFromDecl()); 641 break; 642 case FunctionDecl::TK_FunctionTemplate: 643 Record.AddDeclRef(D->getDescribedFunctionTemplate()); 644 break; 645 case FunctionDecl::TK_MemberSpecialization: { 646 MemberSpecializationInfo *MemberInfo = D->getMemberSpecializationInfo(); 647 Record.AddDeclRef(MemberInfo->getInstantiatedFrom()); 648 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 649 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation()); 650 break; 651 } 652 case FunctionDecl::TK_FunctionTemplateSpecialization: { 653 FunctionTemplateSpecializationInfo * 654 FTSInfo = D->getTemplateSpecializationInfo(); 655 656 RegisterTemplateSpecialization(FTSInfo->getTemplate(), D); 657 658 Record.AddDeclRef(FTSInfo->getTemplate()); 659 Record.push_back(FTSInfo->getTemplateSpecializationKind()); 660 661 // Template arguments. 662 Record.AddTemplateArgumentList(FTSInfo->TemplateArguments); 663 664 // Template args as written. 665 Record.push_back(FTSInfo->TemplateArgumentsAsWritten != nullptr); 666 if (FTSInfo->TemplateArgumentsAsWritten) 667 Record.AddASTTemplateArgumentListInfo( 668 FTSInfo->TemplateArgumentsAsWritten); 669 670 Record.AddSourceLocation(FTSInfo->getPointOfInstantiation()); 671 672 if (MemberSpecializationInfo *MemberInfo = 673 FTSInfo->getMemberSpecializationInfo()) { 674 Record.push_back(1); 675 Record.AddDeclRef(MemberInfo->getInstantiatedFrom()); 676 Record.push_back(MemberInfo->getTemplateSpecializationKind()); 677 Record.AddSourceLocation(MemberInfo->getPointOfInstantiation()); 678 } else { 679 Record.push_back(0); 680 } 681 682 if (D->isCanonicalDecl()) { 683 // Write the template that contains the specializations set. We will 684 // add a FunctionTemplateSpecializationInfo to it when reading. 685 Record.AddDeclRef(FTSInfo->getTemplate()->getCanonicalDecl()); 686 } 687 break; 688 } 689 case FunctionDecl::TK_DependentFunctionTemplateSpecialization: { 690 DependentFunctionTemplateSpecializationInfo * 691 DFTSInfo = D->getDependentSpecializationInfo(); 692 693 // Candidates. 694 Record.push_back(DFTSInfo->getCandidates().size()); 695 for (FunctionTemplateDecl *FTD : DFTSInfo->getCandidates()) 696 Record.AddDeclRef(FTD); 697 698 // Templates args. 699 Record.push_back(DFTSInfo->TemplateArgumentsAsWritten != nullptr); 700 if (DFTSInfo->TemplateArgumentsAsWritten) 701 Record.AddASTTemplateArgumentListInfo( 702 DFTSInfo->TemplateArgumentsAsWritten); 703 break; 704 } 705 } 706 707 VisitDeclaratorDecl(D); 708 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName()); 709 Record.push_back(D->getIdentifierNamespace()); 710 711 // The order matters here. It will be better to put the bit with higher 712 // probability to be 0 in the end of the bits. See the comments in VisitDecl 713 // for details. 714 BitsPacker FunctionDeclBits; 715 // FIXME: stable encoding 716 FunctionDeclBits.addBits(llvm::to_underlying(D->getLinkageInternal()), 3); 717 FunctionDeclBits.addBits((uint32_t)D->getStorageClass(), /*BitWidth=*/3); 718 FunctionDeclBits.addBit(D->isInlineSpecified()); 719 FunctionDeclBits.addBit(D->isInlined()); 720 FunctionDeclBits.addBit(D->hasSkippedBody()); 721 FunctionDeclBits.addBit(D->isVirtualAsWritten()); 722 FunctionDeclBits.addBit(D->isPureVirtual()); 723 FunctionDeclBits.addBit(D->hasInheritedPrototype()); 724 FunctionDeclBits.addBit(D->hasWrittenPrototype()); 725 FunctionDeclBits.addBit(D->isDeletedBit()); 726 FunctionDeclBits.addBit(D->isTrivial()); 727 FunctionDeclBits.addBit(D->isTrivialForCall()); 728 FunctionDeclBits.addBit(D->isDefaulted()); 729 FunctionDeclBits.addBit(D->isExplicitlyDefaulted()); 730 FunctionDeclBits.addBit(D->isIneligibleOrNotSelected()); 731 FunctionDeclBits.addBits((uint64_t)(D->getConstexprKind()), /*BitWidth=*/2); 732 FunctionDeclBits.addBit(D->hasImplicitReturnZero()); 733 FunctionDeclBits.addBit(D->isMultiVersion()); 734 FunctionDeclBits.addBit(D->isLateTemplateParsed()); 735 FunctionDeclBits.addBit(D->FriendConstraintRefersToEnclosingTemplate()); 736 FunctionDeclBits.addBit(D->usesSEHTry()); 737 Record.push_back(FunctionDeclBits); 738 739 Record.AddSourceLocation(D->getEndLoc()); 740 if (D->isExplicitlyDefaulted()) 741 Record.AddSourceLocation(D->getDefaultLoc()); 742 743 Record.push_back(D->getODRHash()); 744 745 if (D->isDefaulted() || D->isDeletedAsWritten()) { 746 if (auto *FDI = D->getDefalutedOrDeletedInfo()) { 747 // Store both that there is an DefaultedOrDeletedInfo and whether it 748 // contains a DeletedMessage. 749 StringLiteral *DeletedMessage = FDI->getDeletedMessage(); 750 Record.push_back(1 | (DeletedMessage ? 2 : 0)); 751 if (DeletedMessage) 752 Record.AddStmt(DeletedMessage); 753 754 Record.push_back(FDI->getUnqualifiedLookups().size()); 755 for (DeclAccessPair P : FDI->getUnqualifiedLookups()) { 756 Record.AddDeclRef(P.getDecl()); 757 Record.push_back(P.getAccess()); 758 } 759 } else { 760 Record.push_back(0); 761 } 762 } 763 764 Record.push_back(D->param_size()); 765 for (auto *P : D->parameters()) 766 Record.AddDeclRef(P); 767 Code = serialization::DECL_FUNCTION; 768 } 769 770 static void addExplicitSpecifier(ExplicitSpecifier ES, 771 ASTRecordWriter &Record) { 772 uint64_t Kind = static_cast<uint64_t>(ES.getKind()); 773 Kind = Kind << 1 | static_cast<bool>(ES.getExpr()); 774 Record.push_back(Kind); 775 if (ES.getExpr()) { 776 Record.AddStmt(ES.getExpr()); 777 } 778 } 779 780 void ASTDeclWriter::VisitCXXDeductionGuideDecl(CXXDeductionGuideDecl *D) { 781 addExplicitSpecifier(D->getExplicitSpecifier(), Record); 782 Record.AddDeclRef(D->Ctor); 783 VisitFunctionDecl(D); 784 Record.push_back(static_cast<unsigned char>(D->getDeductionCandidateKind())); 785 Code = serialization::DECL_CXX_DEDUCTION_GUIDE; 786 } 787 788 void ASTDeclWriter::VisitObjCMethodDecl(ObjCMethodDecl *D) { 789 static_assert(DeclContext::NumObjCMethodDeclBits == 37, 790 "You need to update the serializer after you change the " 791 "ObjCMethodDeclBits"); 792 793 VisitNamedDecl(D); 794 // FIXME: convert to LazyStmtPtr? 795 // Unlike C/C++, method bodies will never be in header files. 796 bool HasBodyStuff = D->getBody() != nullptr; 797 Record.push_back(HasBodyStuff); 798 if (HasBodyStuff) { 799 Record.AddStmt(D->getBody()); 800 } 801 Record.AddDeclRef(D->getSelfDecl()); 802 Record.AddDeclRef(D->getCmdDecl()); 803 Record.push_back(D->isInstanceMethod()); 804 Record.push_back(D->isVariadic()); 805 Record.push_back(D->isPropertyAccessor()); 806 Record.push_back(D->isSynthesizedAccessorStub()); 807 Record.push_back(D->isDefined()); 808 Record.push_back(D->isOverriding()); 809 Record.push_back(D->hasSkippedBody()); 810 811 Record.push_back(D->isRedeclaration()); 812 Record.push_back(D->hasRedeclaration()); 813 if (D->hasRedeclaration()) { 814 assert(Context.getObjCMethodRedeclaration(D)); 815 Record.AddDeclRef(Context.getObjCMethodRedeclaration(D)); 816 } 817 818 // FIXME: stable encoding for @required/@optional 819 Record.push_back(llvm::to_underlying(D->getImplementationControl())); 820 // FIXME: stable encoding for in/out/inout/bycopy/byref/oneway/nullability 821 Record.push_back(D->getObjCDeclQualifier()); 822 Record.push_back(D->hasRelatedResultType()); 823 Record.AddTypeRef(D->getReturnType()); 824 Record.AddTypeSourceInfo(D->getReturnTypeSourceInfo()); 825 Record.AddSourceLocation(D->getEndLoc()); 826 Record.push_back(D->param_size()); 827 for (const auto *P : D->parameters()) 828 Record.AddDeclRef(P); 829 830 Record.push_back(D->getSelLocsKind()); 831 unsigned NumStoredSelLocs = D->getNumStoredSelLocs(); 832 SourceLocation *SelLocs = D->getStoredSelLocs(); 833 Record.push_back(NumStoredSelLocs); 834 for (unsigned i = 0; i != NumStoredSelLocs; ++i) 835 Record.AddSourceLocation(SelLocs[i]); 836 837 Code = serialization::DECL_OBJC_METHOD; 838 } 839 840 void ASTDeclWriter::VisitObjCTypeParamDecl(ObjCTypeParamDecl *D) { 841 VisitTypedefNameDecl(D); 842 Record.push_back(D->Variance); 843 Record.push_back(D->Index); 844 Record.AddSourceLocation(D->VarianceLoc); 845 Record.AddSourceLocation(D->ColonLoc); 846 847 Code = serialization::DECL_OBJC_TYPE_PARAM; 848 } 849 850 void ASTDeclWriter::VisitObjCContainerDecl(ObjCContainerDecl *D) { 851 static_assert(DeclContext::NumObjCContainerDeclBits == 64, 852 "You need to update the serializer after you change the " 853 "ObjCContainerDeclBits"); 854 855 VisitNamedDecl(D); 856 Record.AddSourceLocation(D->getAtStartLoc()); 857 Record.AddSourceRange(D->getAtEndRange()); 858 // Abstract class (no need to define a stable serialization::DECL code). 859 } 860 861 void ASTDeclWriter::VisitObjCInterfaceDecl(ObjCInterfaceDecl *D) { 862 VisitRedeclarable(D); 863 VisitObjCContainerDecl(D); 864 Record.AddTypeRef(QualType(D->getTypeForDecl(), 0)); 865 AddObjCTypeParamList(D->TypeParamList); 866 867 Record.push_back(D->isThisDeclarationADefinition()); 868 if (D->isThisDeclarationADefinition()) { 869 // Write the DefinitionData 870 ObjCInterfaceDecl::DefinitionData &Data = D->data(); 871 872 Record.AddTypeSourceInfo(D->getSuperClassTInfo()); 873 Record.AddSourceLocation(D->getEndOfDefinitionLoc()); 874 Record.push_back(Data.HasDesignatedInitializers); 875 Record.push_back(D->getODRHash()); 876 877 // Write out the protocols that are directly referenced by the @interface. 878 Record.push_back(Data.ReferencedProtocols.size()); 879 for (const auto *P : D->protocols()) 880 Record.AddDeclRef(P); 881 for (const auto &PL : D->protocol_locs()) 882 Record.AddSourceLocation(PL); 883 884 // Write out the protocols that are transitively referenced. 885 Record.push_back(Data.AllReferencedProtocols.size()); 886 for (ObjCList<ObjCProtocolDecl>::iterator 887 P = Data.AllReferencedProtocols.begin(), 888 PEnd = Data.AllReferencedProtocols.end(); 889 P != PEnd; ++P) 890 Record.AddDeclRef(*P); 891 892 893 if (ObjCCategoryDecl *Cat = D->getCategoryListRaw()) { 894 // Ensure that we write out the set of categories for this class. 895 Writer.ObjCClassesWithCategories.insert(D); 896 897 // Make sure that the categories get serialized. 898 for (; Cat; Cat = Cat->getNextClassCategoryRaw()) 899 (void)Writer.GetDeclRef(Cat); 900 } 901 } 902 903 Code = serialization::DECL_OBJC_INTERFACE; 904 } 905 906 void ASTDeclWriter::VisitObjCIvarDecl(ObjCIvarDecl *D) { 907 VisitFieldDecl(D); 908 // FIXME: stable encoding for @public/@private/@protected/@package 909 Record.push_back(D->getAccessControl()); 910 Record.push_back(D->getSynthesize()); 911 912 if (D->getDeclContext() == D->getLexicalDeclContext() && 913 !D->hasAttrs() && 914 !D->isImplicit() && 915 !D->isUsed(false) && 916 !D->isInvalidDecl() && 917 !D->isReferenced() && 918 !D->isModulePrivate() && 919 !D->getBitWidth() && 920 !D->hasExtInfo() && 921 D->getDeclName()) 922 AbbrevToUse = Writer.getDeclObjCIvarAbbrev(); 923 924 Code = serialization::DECL_OBJC_IVAR; 925 } 926 927 void ASTDeclWriter::VisitObjCProtocolDecl(ObjCProtocolDecl *D) { 928 VisitRedeclarable(D); 929 VisitObjCContainerDecl(D); 930 931 Record.push_back(D->isThisDeclarationADefinition()); 932 if (D->isThisDeclarationADefinition()) { 933 Record.push_back(D->protocol_size()); 934 for (const auto *I : D->protocols()) 935 Record.AddDeclRef(I); 936 for (const auto &PL : D->protocol_locs()) 937 Record.AddSourceLocation(PL); 938 Record.push_back(D->getODRHash()); 939 } 940 941 Code = serialization::DECL_OBJC_PROTOCOL; 942 } 943 944 void ASTDeclWriter::VisitObjCAtDefsFieldDecl(ObjCAtDefsFieldDecl *D) { 945 VisitFieldDecl(D); 946 Code = serialization::DECL_OBJC_AT_DEFS_FIELD; 947 } 948 949 void ASTDeclWriter::VisitObjCCategoryDecl(ObjCCategoryDecl *D) { 950 VisitObjCContainerDecl(D); 951 Record.AddSourceLocation(D->getCategoryNameLoc()); 952 Record.AddSourceLocation(D->getIvarLBraceLoc()); 953 Record.AddSourceLocation(D->getIvarRBraceLoc()); 954 Record.AddDeclRef(D->getClassInterface()); 955 AddObjCTypeParamList(D->TypeParamList); 956 Record.push_back(D->protocol_size()); 957 for (const auto *I : D->protocols()) 958 Record.AddDeclRef(I); 959 for (const auto &PL : D->protocol_locs()) 960 Record.AddSourceLocation(PL); 961 Code = serialization::DECL_OBJC_CATEGORY; 962 } 963 964 void ASTDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) { 965 VisitNamedDecl(D); 966 Record.AddDeclRef(D->getClassInterface()); 967 Code = serialization::DECL_OBJC_COMPATIBLE_ALIAS; 968 } 969 970 void ASTDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) { 971 VisitNamedDecl(D); 972 Record.AddSourceLocation(D->getAtLoc()); 973 Record.AddSourceLocation(D->getLParenLoc()); 974 Record.AddTypeRef(D->getType()); 975 Record.AddTypeSourceInfo(D->getTypeSourceInfo()); 976 // FIXME: stable encoding 977 Record.push_back((unsigned)D->getPropertyAttributes()); 978 Record.push_back((unsigned)D->getPropertyAttributesAsWritten()); 979 // FIXME: stable encoding 980 Record.push_back((unsigned)D->getPropertyImplementation()); 981 Record.AddDeclarationName(D->getGetterName()); 982 Record.AddSourceLocation(D->getGetterNameLoc()); 983 Record.AddDeclarationName(D->getSetterName()); 984 Record.AddSourceLocation(D->getSetterNameLoc()); 985 Record.AddDeclRef(D->getGetterMethodDecl()); 986 Record.AddDeclRef(D->getSetterMethodDecl()); 987 Record.AddDeclRef(D->getPropertyIvarDecl()); 988 Code = serialization::DECL_OBJC_PROPERTY; 989 } 990 991 void ASTDeclWriter::VisitObjCImplDecl(ObjCImplDecl *D) { 992 VisitObjCContainerDecl(D); 993 Record.AddDeclRef(D->getClassInterface()); 994 // Abstract class (no need to define a stable serialization::DECL code). 995 } 996 997 void ASTDeclWriter::VisitObjCCategoryImplDecl(ObjCCategoryImplDecl *D) { 998 VisitObjCImplDecl(D); 999 Record.AddSourceLocation(D->getCategoryNameLoc()); 1000 Code = serialization::DECL_OBJC_CATEGORY_IMPL; 1001 } 1002 1003 void ASTDeclWriter::VisitObjCImplementationDecl(ObjCImplementationDecl *D) { 1004 VisitObjCImplDecl(D); 1005 Record.AddDeclRef(D->getSuperClass()); 1006 Record.AddSourceLocation(D->getSuperClassLoc()); 1007 Record.AddSourceLocation(D->getIvarLBraceLoc()); 1008 Record.AddSourceLocation(D->getIvarRBraceLoc()); 1009 Record.push_back(D->hasNonZeroConstructors()); 1010 Record.push_back(D->hasDestructors()); 1011 Record.push_back(D->NumIvarInitializers); 1012 if (D->NumIvarInitializers) 1013 Record.AddCXXCtorInitializers( 1014 llvm::ArrayRef(D->init_begin(), D->init_end())); 1015 Code = serialization::DECL_OBJC_IMPLEMENTATION; 1016 } 1017 1018 void ASTDeclWriter::VisitObjCPropertyImplDecl(ObjCPropertyImplDecl *D) { 1019 VisitDecl(D); 1020 Record.AddSourceLocation(D->getBeginLoc()); 1021 Record.AddDeclRef(D->getPropertyDecl()); 1022 Record.AddDeclRef(D->getPropertyIvarDecl()); 1023 Record.AddSourceLocation(D->getPropertyIvarDeclLoc()); 1024 Record.AddDeclRef(D->getGetterMethodDecl()); 1025 Record.AddDeclRef(D->getSetterMethodDecl()); 1026 Record.AddStmt(D->getGetterCXXConstructor()); 1027 Record.AddStmt(D->getSetterCXXAssignment()); 1028 Code = serialization::DECL_OBJC_PROPERTY_IMPL; 1029 } 1030 1031 void ASTDeclWriter::VisitFieldDecl(FieldDecl *D) { 1032 VisitDeclaratorDecl(D); 1033 Record.push_back(D->isMutable()); 1034 1035 Record.push_back((D->StorageKind << 1) | D->BitField); 1036 if (D->StorageKind == FieldDecl::ISK_CapturedVLAType) 1037 Record.AddTypeRef(QualType(D->getCapturedVLAType(), 0)); 1038 else if (D->BitField) 1039 Record.AddStmt(D->getBitWidth()); 1040 1041 if (!D->getDeclName()) 1042 Record.AddDeclRef(Context.getInstantiatedFromUnnamedFieldDecl(D)); 1043 1044 if (D->getDeclContext() == D->getLexicalDeclContext() && 1045 !D->hasAttrs() && 1046 !D->isImplicit() && 1047 !D->isUsed(false) && 1048 !D->isInvalidDecl() && 1049 !D->isReferenced() && 1050 !D->isTopLevelDeclInObjCContainer() && 1051 !D->isModulePrivate() && 1052 !D->getBitWidth() && 1053 !D->hasInClassInitializer() && 1054 !D->hasCapturedVLAType() && 1055 !D->hasExtInfo() && 1056 !ObjCIvarDecl::classofKind(D->getKind()) && 1057 !ObjCAtDefsFieldDecl::classofKind(D->getKind()) && 1058 D->getDeclName()) 1059 AbbrevToUse = Writer.getDeclFieldAbbrev(); 1060 1061 Code = serialization::DECL_FIELD; 1062 } 1063 1064 void ASTDeclWriter::VisitMSPropertyDecl(MSPropertyDecl *D) { 1065 VisitDeclaratorDecl(D); 1066 Record.AddIdentifierRef(D->getGetterId()); 1067 Record.AddIdentifierRef(D->getSetterId()); 1068 Code = serialization::DECL_MS_PROPERTY; 1069 } 1070 1071 void ASTDeclWriter::VisitMSGuidDecl(MSGuidDecl *D) { 1072 VisitValueDecl(D); 1073 MSGuidDecl::Parts Parts = D->getParts(); 1074 Record.push_back(Parts.Part1); 1075 Record.push_back(Parts.Part2); 1076 Record.push_back(Parts.Part3); 1077 Record.append(std::begin(Parts.Part4And5), std::end(Parts.Part4And5)); 1078 Code = serialization::DECL_MS_GUID; 1079 } 1080 1081 void ASTDeclWriter::VisitUnnamedGlobalConstantDecl( 1082 UnnamedGlobalConstantDecl *D) { 1083 VisitValueDecl(D); 1084 Record.AddAPValue(D->getValue()); 1085 Code = serialization::DECL_UNNAMED_GLOBAL_CONSTANT; 1086 } 1087 1088 void ASTDeclWriter::VisitTemplateParamObjectDecl(TemplateParamObjectDecl *D) { 1089 VisitValueDecl(D); 1090 Record.AddAPValue(D->getValue()); 1091 Code = serialization::DECL_TEMPLATE_PARAM_OBJECT; 1092 } 1093 1094 void ASTDeclWriter::VisitIndirectFieldDecl(IndirectFieldDecl *D) { 1095 VisitValueDecl(D); 1096 Record.push_back(D->getChainingSize()); 1097 1098 for (const auto *P : D->chain()) 1099 Record.AddDeclRef(P); 1100 Code = serialization::DECL_INDIRECTFIELD; 1101 } 1102 1103 void ASTDeclWriter::VisitVarDecl(VarDecl *D) { 1104 VisitRedeclarable(D); 1105 VisitDeclaratorDecl(D); 1106 1107 // The order matters here. It will be better to put the bit with higher 1108 // probability to be 0 in the end of the bits. See the comments in VisitDecl 1109 // for details. 1110 BitsPacker VarDeclBits; 1111 VarDeclBits.addBits(llvm::to_underlying(D->getLinkageInternal()), 1112 /*BitWidth=*/3); 1113 1114 bool ModulesCodegen = false; 1115 if (Writer.WritingModule && D->getStorageDuration() == SD_Static && 1116 !D->getDescribedVarTemplate()) { 1117 // When building a C++20 module interface unit or a partition unit, a 1118 // strong definition in the module interface is provided by the 1119 // compilation of that unit, not by its users. (Inline variables are still 1120 // emitted in module users.) 1121 ModulesCodegen = 1122 (Writer.WritingModule->isInterfaceOrPartition() || 1123 (D->hasAttr<DLLExportAttr>() && 1124 Writer.Context->getLangOpts().BuildingPCHWithObjectFile)) && 1125 Writer.Context->GetGVALinkageForVariable(D) >= GVA_StrongExternal; 1126 } 1127 VarDeclBits.addBit(ModulesCodegen); 1128 1129 VarDeclBits.addBits(D->getStorageClass(), /*BitWidth=*/3); 1130 VarDeclBits.addBits(D->getTSCSpec(), /*BitWidth=*/2); 1131 VarDeclBits.addBits(D->getInitStyle(), /*BitWidth=*/2); 1132 VarDeclBits.addBit(D->isARCPseudoStrong()); 1133 1134 bool HasDeducedType = false; 1135 if (!isa<ParmVarDecl>(D)) { 1136 VarDeclBits.addBit(D->isThisDeclarationADemotedDefinition()); 1137 VarDeclBits.addBit(D->isExceptionVariable()); 1138 VarDeclBits.addBit(D->isNRVOVariable()); 1139 VarDeclBits.addBit(D->isCXXForRangeDecl()); 1140 1141 VarDeclBits.addBit(D->isInline()); 1142 VarDeclBits.addBit(D->isInlineSpecified()); 1143 VarDeclBits.addBit(D->isConstexpr()); 1144 VarDeclBits.addBit(D->isInitCapture()); 1145 VarDeclBits.addBit(D->isPreviousDeclInSameBlockScope()); 1146 1147 VarDeclBits.addBit(D->isEscapingByref()); 1148 HasDeducedType = D->getType()->getContainedDeducedType(); 1149 VarDeclBits.addBit(HasDeducedType); 1150 1151 if (const auto *IPD = dyn_cast<ImplicitParamDecl>(D)) 1152 VarDeclBits.addBits(llvm::to_underlying(IPD->getParameterKind()), 1153 /*Width=*/3); 1154 else 1155 VarDeclBits.addBits(0, /*Width=*/3); 1156 1157 VarDeclBits.addBit(D->isObjCForDecl()); 1158 } 1159 1160 Record.push_back(VarDeclBits); 1161 1162 if (ModulesCodegen) 1163 Writer.AddDeclRef(D, Writer.ModularCodegenDecls); 1164 1165 if (D->hasAttr<BlocksAttr>()) { 1166 BlockVarCopyInit Init = Writer.Context->getBlockVarCopyInit(D); 1167 Record.AddStmt(Init.getCopyExpr()); 1168 if (Init.getCopyExpr()) 1169 Record.push_back(Init.canThrow()); 1170 } 1171 1172 enum { 1173 VarNotTemplate = 0, VarTemplate, StaticDataMemberSpecialization 1174 }; 1175 if (VarTemplateDecl *TemplD = D->getDescribedVarTemplate()) { 1176 Record.push_back(VarTemplate); 1177 Record.AddDeclRef(TemplD); 1178 } else if (MemberSpecializationInfo *SpecInfo 1179 = D->getMemberSpecializationInfo()) { 1180 Record.push_back(StaticDataMemberSpecialization); 1181 Record.AddDeclRef(SpecInfo->getInstantiatedFrom()); 1182 Record.push_back(SpecInfo->getTemplateSpecializationKind()); 1183 Record.AddSourceLocation(SpecInfo->getPointOfInstantiation()); 1184 } else { 1185 Record.push_back(VarNotTemplate); 1186 } 1187 1188 if (D->getDeclContext() == D->getLexicalDeclContext() && !D->hasAttrs() && 1189 !D->isTopLevelDeclInObjCContainer() && 1190 !needsAnonymousDeclarationNumber(D) && 1191 D->getDeclName().getNameKind() == DeclarationName::Identifier && 1192 !D->hasExtInfo() && D->getFirstDecl() == D->getMostRecentDecl() && 1193 D->getKind() == Decl::Var && !D->isInline() && !D->isConstexpr() && 1194 !D->isInitCapture() && !D->isPreviousDeclInSameBlockScope() && 1195 !D->isEscapingByref() && !HasDeducedType && 1196 D->getStorageDuration() != SD_Static && !D->getDescribedVarTemplate() && 1197 !D->getMemberSpecializationInfo() && !D->isObjCForDecl() && 1198 !isa<ImplicitParamDecl>(D) && !D->isEscapingByref()) 1199 AbbrevToUse = Writer.getDeclVarAbbrev(); 1200 1201 Code = serialization::DECL_VAR; 1202 } 1203 1204 void ASTDeclWriter::VisitImplicitParamDecl(ImplicitParamDecl *D) { 1205 VisitVarDecl(D); 1206 Code = serialization::DECL_IMPLICIT_PARAM; 1207 } 1208 1209 void ASTDeclWriter::VisitParmVarDecl(ParmVarDecl *D) { 1210 VisitVarDecl(D); 1211 1212 // See the implementation of `ParmVarDecl::getParameterIndex()`, which may 1213 // exceed the size of the normal bitfield. So it may be better to not pack 1214 // these bits. 1215 Record.push_back(D->getFunctionScopeIndex()); 1216 1217 BitsPacker ParmVarDeclBits; 1218 ParmVarDeclBits.addBit(D->isObjCMethodParameter()); 1219 ParmVarDeclBits.addBits(D->getFunctionScopeDepth(), /*BitsWidth=*/7); 1220 // FIXME: stable encoding 1221 ParmVarDeclBits.addBits(D->getObjCDeclQualifier(), /*BitsWidth=*/7); 1222 ParmVarDeclBits.addBit(D->isKNRPromoted()); 1223 ParmVarDeclBits.addBit(D->hasInheritedDefaultArg()); 1224 ParmVarDeclBits.addBit(D->hasUninstantiatedDefaultArg()); 1225 ParmVarDeclBits.addBit(D->getExplicitObjectParamThisLoc().isValid()); 1226 Record.push_back(ParmVarDeclBits); 1227 1228 if (D->hasUninstantiatedDefaultArg()) 1229 Record.AddStmt(D->getUninstantiatedDefaultArg()); 1230 if (D->getExplicitObjectParamThisLoc().isValid()) 1231 Record.AddSourceLocation(D->getExplicitObjectParamThisLoc()); 1232 Code = serialization::DECL_PARM_VAR; 1233 1234 // If the assumptions about the DECL_PARM_VAR abbrev are true, use it. Here 1235 // we dynamically check for the properties that we optimize for, but don't 1236 // know are true of all PARM_VAR_DECLs. 1237 if (D->getDeclContext() == D->getLexicalDeclContext() && !D->hasAttrs() && 1238 !D->hasExtInfo() && D->getStorageClass() == 0 && !D->isInvalidDecl() && 1239 !D->isTopLevelDeclInObjCContainer() && 1240 D->getInitStyle() == VarDecl::CInit && // Can params have anything else? 1241 D->getInit() == nullptr) // No default expr. 1242 AbbrevToUse = Writer.getDeclParmVarAbbrev(); 1243 1244 // Check things we know are true of *every* PARM_VAR_DECL, which is more than 1245 // just us assuming it. 1246 assert(!D->getTSCSpec() && "PARM_VAR_DECL can't use TLS"); 1247 assert(!D->isThisDeclarationADemotedDefinition() 1248 && "PARM_VAR_DECL can't be demoted definition."); 1249 assert(D->getAccess() == AS_none && "PARM_VAR_DECL can't be public/private"); 1250 assert(!D->isExceptionVariable() && "PARM_VAR_DECL can't be exception var"); 1251 assert(D->getPreviousDecl() == nullptr && "PARM_VAR_DECL can't be redecl"); 1252 assert(!D->isStaticDataMember() && 1253 "PARM_VAR_DECL can't be static data member"); 1254 } 1255 1256 void ASTDeclWriter::VisitDecompositionDecl(DecompositionDecl *D) { 1257 // Record the number of bindings first to simplify deserialization. 1258 Record.push_back(D->bindings().size()); 1259 1260 VisitVarDecl(D); 1261 for (auto *B : D->bindings()) 1262 Record.AddDeclRef(B); 1263 Code = serialization::DECL_DECOMPOSITION; 1264 } 1265 1266 void ASTDeclWriter::VisitBindingDecl(BindingDecl *D) { 1267 VisitValueDecl(D); 1268 Record.AddStmt(D->getBinding()); 1269 Code = serialization::DECL_BINDING; 1270 } 1271 1272 void ASTDeclWriter::VisitFileScopeAsmDecl(FileScopeAsmDecl *D) { 1273 VisitDecl(D); 1274 Record.AddStmt(D->getAsmString()); 1275 Record.AddSourceLocation(D->getRParenLoc()); 1276 Code = serialization::DECL_FILE_SCOPE_ASM; 1277 } 1278 1279 void ASTDeclWriter::VisitTopLevelStmtDecl(TopLevelStmtDecl *D) { 1280 VisitDecl(D); 1281 Record.AddStmt(D->getStmt()); 1282 Code = serialization::DECL_TOP_LEVEL_STMT_DECL; 1283 } 1284 1285 void ASTDeclWriter::VisitEmptyDecl(EmptyDecl *D) { 1286 VisitDecl(D); 1287 Code = serialization::DECL_EMPTY; 1288 } 1289 1290 void ASTDeclWriter::VisitLifetimeExtendedTemporaryDecl( 1291 LifetimeExtendedTemporaryDecl *D) { 1292 VisitDecl(D); 1293 Record.AddDeclRef(D->getExtendingDecl()); 1294 Record.AddStmt(D->getTemporaryExpr()); 1295 Record.push_back(static_cast<bool>(D->getValue())); 1296 if (D->getValue()) 1297 Record.AddAPValue(*D->getValue()); 1298 Record.push_back(D->getManglingNumber()); 1299 Code = serialization::DECL_LIFETIME_EXTENDED_TEMPORARY; 1300 } 1301 void ASTDeclWriter::VisitBlockDecl(BlockDecl *D) { 1302 VisitDecl(D); 1303 Record.AddStmt(D->getBody()); 1304 Record.AddTypeSourceInfo(D->getSignatureAsWritten()); 1305 Record.push_back(D->param_size()); 1306 for (ParmVarDecl *P : D->parameters()) 1307 Record.AddDeclRef(P); 1308 Record.push_back(D->isVariadic()); 1309 Record.push_back(D->blockMissingReturnType()); 1310 Record.push_back(D->isConversionFromLambda()); 1311 Record.push_back(D->doesNotEscape()); 1312 Record.push_back(D->canAvoidCopyToHeap()); 1313 Record.push_back(D->capturesCXXThis()); 1314 Record.push_back(D->getNumCaptures()); 1315 for (const auto &capture : D->captures()) { 1316 Record.AddDeclRef(capture.getVariable()); 1317 1318 unsigned flags = 0; 1319 if (capture.isByRef()) flags |= 1; 1320 if (capture.isNested()) flags |= 2; 1321 if (capture.hasCopyExpr()) flags |= 4; 1322 Record.push_back(flags); 1323 1324 if (capture.hasCopyExpr()) Record.AddStmt(capture.getCopyExpr()); 1325 } 1326 1327 Code = serialization::DECL_BLOCK; 1328 } 1329 1330 void ASTDeclWriter::VisitCapturedDecl(CapturedDecl *CD) { 1331 Record.push_back(CD->getNumParams()); 1332 VisitDecl(CD); 1333 Record.push_back(CD->getContextParamPosition()); 1334 Record.push_back(CD->isNothrow() ? 1 : 0); 1335 // Body is stored by VisitCapturedStmt. 1336 for (unsigned I = 0; I < CD->getNumParams(); ++I) 1337 Record.AddDeclRef(CD->getParam(I)); 1338 Code = serialization::DECL_CAPTURED; 1339 } 1340 1341 void ASTDeclWriter::VisitLinkageSpecDecl(LinkageSpecDecl *D) { 1342 static_assert(DeclContext::NumLinkageSpecDeclBits == 17, 1343 "You need to update the serializer after you change the" 1344 "LinkageSpecDeclBits"); 1345 1346 VisitDecl(D); 1347 Record.push_back(llvm::to_underlying(D->getLanguage())); 1348 Record.AddSourceLocation(D->getExternLoc()); 1349 Record.AddSourceLocation(D->getRBraceLoc()); 1350 Code = serialization::DECL_LINKAGE_SPEC; 1351 } 1352 1353 void ASTDeclWriter::VisitExportDecl(ExportDecl *D) { 1354 VisitDecl(D); 1355 Record.AddSourceLocation(D->getRBraceLoc()); 1356 Code = serialization::DECL_EXPORT; 1357 } 1358 1359 void ASTDeclWriter::VisitLabelDecl(LabelDecl *D) { 1360 VisitNamedDecl(D); 1361 Record.AddSourceLocation(D->getBeginLoc()); 1362 Code = serialization::DECL_LABEL; 1363 } 1364 1365 1366 void ASTDeclWriter::VisitNamespaceDecl(NamespaceDecl *D) { 1367 VisitRedeclarable(D); 1368 VisitNamedDecl(D); 1369 1370 BitsPacker NamespaceDeclBits; 1371 NamespaceDeclBits.addBit(D->isInline()); 1372 NamespaceDeclBits.addBit(D->isNested()); 1373 Record.push_back(NamespaceDeclBits); 1374 1375 Record.AddSourceLocation(D->getBeginLoc()); 1376 Record.AddSourceLocation(D->getRBraceLoc()); 1377 1378 if (D->isFirstDecl()) 1379 Record.AddDeclRef(D->getAnonymousNamespace()); 1380 Code = serialization::DECL_NAMESPACE; 1381 1382 if (Writer.hasChain() && D->isAnonymousNamespace() && 1383 D == D->getMostRecentDecl()) { 1384 // This is a most recent reopening of the anonymous namespace. If its parent 1385 // is in a previous PCH (or is the TU), mark that parent for update, because 1386 // the original namespace always points to the latest re-opening of its 1387 // anonymous namespace. 1388 Decl *Parent = cast<Decl>( 1389 D->getParent()->getRedeclContext()->getPrimaryContext()); 1390 if (Parent->isFromASTFile() || isa<TranslationUnitDecl>(Parent)) { 1391 Writer.DeclUpdates[Parent].push_back( 1392 ASTWriter::DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, D)); 1393 } 1394 } 1395 } 1396 1397 void ASTDeclWriter::VisitNamespaceAliasDecl(NamespaceAliasDecl *D) { 1398 VisitRedeclarable(D); 1399 VisitNamedDecl(D); 1400 Record.AddSourceLocation(D->getNamespaceLoc()); 1401 Record.AddSourceLocation(D->getTargetNameLoc()); 1402 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1403 Record.AddDeclRef(D->getNamespace()); 1404 Code = serialization::DECL_NAMESPACE_ALIAS; 1405 } 1406 1407 void ASTDeclWriter::VisitUsingDecl(UsingDecl *D) { 1408 VisitNamedDecl(D); 1409 Record.AddSourceLocation(D->getUsingLoc()); 1410 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1411 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName()); 1412 Record.AddDeclRef(D->FirstUsingShadow.getPointer()); 1413 Record.push_back(D->hasTypename()); 1414 Record.AddDeclRef(Context.getInstantiatedFromUsingDecl(D)); 1415 Code = serialization::DECL_USING; 1416 } 1417 1418 void ASTDeclWriter::VisitUsingEnumDecl(UsingEnumDecl *D) { 1419 VisitNamedDecl(D); 1420 Record.AddSourceLocation(D->getUsingLoc()); 1421 Record.AddSourceLocation(D->getEnumLoc()); 1422 Record.AddTypeSourceInfo(D->getEnumType()); 1423 Record.AddDeclRef(D->FirstUsingShadow.getPointer()); 1424 Record.AddDeclRef(Context.getInstantiatedFromUsingEnumDecl(D)); 1425 Code = serialization::DECL_USING_ENUM; 1426 } 1427 1428 void ASTDeclWriter::VisitUsingPackDecl(UsingPackDecl *D) { 1429 Record.push_back(D->NumExpansions); 1430 VisitNamedDecl(D); 1431 Record.AddDeclRef(D->getInstantiatedFromUsingDecl()); 1432 for (auto *E : D->expansions()) 1433 Record.AddDeclRef(E); 1434 Code = serialization::DECL_USING_PACK; 1435 } 1436 1437 void ASTDeclWriter::VisitUsingShadowDecl(UsingShadowDecl *D) { 1438 VisitRedeclarable(D); 1439 VisitNamedDecl(D); 1440 Record.AddDeclRef(D->getTargetDecl()); 1441 Record.push_back(D->getIdentifierNamespace()); 1442 Record.AddDeclRef(D->UsingOrNextShadow); 1443 Record.AddDeclRef(Context.getInstantiatedFromUsingShadowDecl(D)); 1444 1445 if (D->getDeclContext() == D->getLexicalDeclContext() && 1446 D->getFirstDecl() == D->getMostRecentDecl() && !D->hasAttrs() && 1447 !needsAnonymousDeclarationNumber(D) && 1448 D->getDeclName().getNameKind() == DeclarationName::Identifier) 1449 AbbrevToUse = Writer.getDeclUsingShadowAbbrev(); 1450 1451 Code = serialization::DECL_USING_SHADOW; 1452 } 1453 1454 void ASTDeclWriter::VisitConstructorUsingShadowDecl( 1455 ConstructorUsingShadowDecl *D) { 1456 VisitUsingShadowDecl(D); 1457 Record.AddDeclRef(D->NominatedBaseClassShadowDecl); 1458 Record.AddDeclRef(D->ConstructedBaseClassShadowDecl); 1459 Record.push_back(D->IsVirtual); 1460 Code = serialization::DECL_CONSTRUCTOR_USING_SHADOW; 1461 } 1462 1463 void ASTDeclWriter::VisitUsingDirectiveDecl(UsingDirectiveDecl *D) { 1464 VisitNamedDecl(D); 1465 Record.AddSourceLocation(D->getUsingLoc()); 1466 Record.AddSourceLocation(D->getNamespaceKeyLocation()); 1467 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1468 Record.AddDeclRef(D->getNominatedNamespace()); 1469 Record.AddDeclRef(dyn_cast<Decl>(D->getCommonAncestor())); 1470 Code = serialization::DECL_USING_DIRECTIVE; 1471 } 1472 1473 void ASTDeclWriter::VisitUnresolvedUsingValueDecl(UnresolvedUsingValueDecl *D) { 1474 VisitValueDecl(D); 1475 Record.AddSourceLocation(D->getUsingLoc()); 1476 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1477 Record.AddDeclarationNameLoc(D->DNLoc, D->getDeclName()); 1478 Record.AddSourceLocation(D->getEllipsisLoc()); 1479 Code = serialization::DECL_UNRESOLVED_USING_VALUE; 1480 } 1481 1482 void ASTDeclWriter::VisitUnresolvedUsingTypenameDecl( 1483 UnresolvedUsingTypenameDecl *D) { 1484 VisitTypeDecl(D); 1485 Record.AddSourceLocation(D->getTypenameLoc()); 1486 Record.AddNestedNameSpecifierLoc(D->getQualifierLoc()); 1487 Record.AddSourceLocation(D->getEllipsisLoc()); 1488 Code = serialization::DECL_UNRESOLVED_USING_TYPENAME; 1489 } 1490 1491 void ASTDeclWriter::VisitUnresolvedUsingIfExistsDecl( 1492 UnresolvedUsingIfExistsDecl *D) { 1493 VisitNamedDecl(D); 1494 Code = serialization::DECL_UNRESOLVED_USING_IF_EXISTS; 1495 } 1496 1497 void ASTDeclWriter::VisitCXXRecordDecl(CXXRecordDecl *D) { 1498 VisitRecordDecl(D); 1499 1500 enum { 1501 CXXRecNotTemplate = 0, 1502 CXXRecTemplate, 1503 CXXRecMemberSpecialization, 1504 CXXLambda 1505 }; 1506 if (ClassTemplateDecl *TemplD = D->getDescribedClassTemplate()) { 1507 Record.push_back(CXXRecTemplate); 1508 Record.AddDeclRef(TemplD); 1509 } else if (MemberSpecializationInfo *MSInfo 1510 = D->getMemberSpecializationInfo()) { 1511 Record.push_back(CXXRecMemberSpecialization); 1512 Record.AddDeclRef(MSInfo->getInstantiatedFrom()); 1513 Record.push_back(MSInfo->getTemplateSpecializationKind()); 1514 Record.AddSourceLocation(MSInfo->getPointOfInstantiation()); 1515 } else if (D->isLambda()) { 1516 // For a lambda, we need some information early for merging. 1517 Record.push_back(CXXLambda); 1518 if (auto *Context = D->getLambdaContextDecl()) { 1519 Record.AddDeclRef(Context); 1520 Record.push_back(D->getLambdaIndexInContext()); 1521 } else { 1522 Record.push_back(0); 1523 } 1524 } else { 1525 Record.push_back(CXXRecNotTemplate); 1526 } 1527 1528 Record.push_back(D->isThisDeclarationADefinition()); 1529 if (D->isThisDeclarationADefinition()) 1530 Record.AddCXXDefinitionData(D); 1531 1532 if (D->isCompleteDefinition() && D->isInNamedModule()) 1533 Writer.AddDeclRef(D, Writer.ModularCodegenDecls); 1534 1535 // Store (what we currently believe to be) the key function to avoid 1536 // deserializing every method so we can compute it. 1537 // 1538 // FIXME: Avoid adding the key function if the class is defined in 1539 // module purview since in that case the key function is meaningless. 1540 if (D->isCompleteDefinition()) 1541 Record.AddDeclRef(Context.getCurrentKeyFunction(D)); 1542 1543 Code = serialization::DECL_CXX_RECORD; 1544 } 1545 1546 void ASTDeclWriter::VisitCXXMethodDecl(CXXMethodDecl *D) { 1547 VisitFunctionDecl(D); 1548 if (D->isCanonicalDecl()) { 1549 Record.push_back(D->size_overridden_methods()); 1550 for (const CXXMethodDecl *MD : D->overridden_methods()) 1551 Record.AddDeclRef(MD); 1552 } else { 1553 // We only need to record overridden methods once for the canonical decl. 1554 Record.push_back(0); 1555 } 1556 1557 if (D->getDeclContext() == D->getLexicalDeclContext() && 1558 D->getFirstDecl() == D->getMostRecentDecl() && !D->isInvalidDecl() && 1559 !D->hasAttrs() && !D->isTopLevelDeclInObjCContainer() && 1560 D->getDeclName().getNameKind() == DeclarationName::Identifier && 1561 !D->hasExtInfo() && !D->isExplicitlyDefaulted()) { 1562 if (D->getTemplatedKind() == FunctionDecl::TK_NonTemplate || 1563 D->getTemplatedKind() == FunctionDecl::TK_FunctionTemplate || 1564 D->getTemplatedKind() == FunctionDecl::TK_MemberSpecialization || 1565 D->getTemplatedKind() == FunctionDecl::TK_DependentNonTemplate) 1566 AbbrevToUse = Writer.getDeclCXXMethodAbbrev(D->getTemplatedKind()); 1567 else if (D->getTemplatedKind() == 1568 FunctionDecl::TK_FunctionTemplateSpecialization) { 1569 FunctionTemplateSpecializationInfo *FTSInfo = 1570 D->getTemplateSpecializationInfo(); 1571 1572 if (FTSInfo->TemplateArguments->size() == 1) { 1573 const TemplateArgument &TA = FTSInfo->TemplateArguments->get(0); 1574 if (TA.getKind() == TemplateArgument::Type && 1575 !FTSInfo->TemplateArgumentsAsWritten && 1576 !FTSInfo->getMemberSpecializationInfo()) 1577 AbbrevToUse = Writer.getDeclCXXMethodAbbrev(D->getTemplatedKind()); 1578 } 1579 } else if (D->getTemplatedKind() == 1580 FunctionDecl::TK_DependentFunctionTemplateSpecialization) { 1581 DependentFunctionTemplateSpecializationInfo *DFTSInfo = 1582 D->getDependentSpecializationInfo(); 1583 if (!DFTSInfo->TemplateArgumentsAsWritten) 1584 AbbrevToUse = Writer.getDeclCXXMethodAbbrev(D->getTemplatedKind()); 1585 } 1586 } 1587 1588 Code = serialization::DECL_CXX_METHOD; 1589 } 1590 1591 void ASTDeclWriter::VisitCXXConstructorDecl(CXXConstructorDecl *D) { 1592 static_assert(DeclContext::NumCXXConstructorDeclBits == 64, 1593 "You need to update the serializer after you change the " 1594 "CXXConstructorDeclBits"); 1595 1596 Record.push_back(D->getTrailingAllocKind()); 1597 addExplicitSpecifier(D->getExplicitSpecifier(), Record); 1598 if (auto Inherited = D->getInheritedConstructor()) { 1599 Record.AddDeclRef(Inherited.getShadowDecl()); 1600 Record.AddDeclRef(Inherited.getConstructor()); 1601 } 1602 1603 VisitCXXMethodDecl(D); 1604 Code = serialization::DECL_CXX_CONSTRUCTOR; 1605 } 1606 1607 void ASTDeclWriter::VisitCXXDestructorDecl(CXXDestructorDecl *D) { 1608 VisitCXXMethodDecl(D); 1609 1610 Record.AddDeclRef(D->getOperatorDelete()); 1611 if (D->getOperatorDelete()) 1612 Record.AddStmt(D->getOperatorDeleteThisArg()); 1613 1614 Code = serialization::DECL_CXX_DESTRUCTOR; 1615 } 1616 1617 void ASTDeclWriter::VisitCXXConversionDecl(CXXConversionDecl *D) { 1618 addExplicitSpecifier(D->getExplicitSpecifier(), Record); 1619 VisitCXXMethodDecl(D); 1620 Code = serialization::DECL_CXX_CONVERSION; 1621 } 1622 1623 void ASTDeclWriter::VisitImportDecl(ImportDecl *D) { 1624 VisitDecl(D); 1625 Record.push_back(Writer.getSubmoduleID(D->getImportedModule())); 1626 ArrayRef<SourceLocation> IdentifierLocs = D->getIdentifierLocs(); 1627 Record.push_back(!IdentifierLocs.empty()); 1628 if (IdentifierLocs.empty()) { 1629 Record.AddSourceLocation(D->getEndLoc()); 1630 Record.push_back(1); 1631 } else { 1632 for (unsigned I = 0, N = IdentifierLocs.size(); I != N; ++I) 1633 Record.AddSourceLocation(IdentifierLocs[I]); 1634 Record.push_back(IdentifierLocs.size()); 1635 } 1636 // Note: the number of source locations must always be the last element in 1637 // the record. 1638 Code = serialization::DECL_IMPORT; 1639 } 1640 1641 void ASTDeclWriter::VisitAccessSpecDecl(AccessSpecDecl *D) { 1642 VisitDecl(D); 1643 Record.AddSourceLocation(D->getColonLoc()); 1644 Code = serialization::DECL_ACCESS_SPEC; 1645 } 1646 1647 void ASTDeclWriter::VisitFriendDecl(FriendDecl *D) { 1648 // Record the number of friend type template parameter lists here 1649 // so as to simplify memory allocation during deserialization. 1650 Record.push_back(D->NumTPLists); 1651 VisitDecl(D); 1652 bool hasFriendDecl = D->Friend.is<NamedDecl*>(); 1653 Record.push_back(hasFriendDecl); 1654 if (hasFriendDecl) 1655 Record.AddDeclRef(D->getFriendDecl()); 1656 else 1657 Record.AddTypeSourceInfo(D->getFriendType()); 1658 for (unsigned i = 0; i < D->NumTPLists; ++i) 1659 Record.AddTemplateParameterList(D->getFriendTypeTemplateParameterList(i)); 1660 Record.AddDeclRef(D->getNextFriend()); 1661 Record.push_back(D->UnsupportedFriend); 1662 Record.AddSourceLocation(D->FriendLoc); 1663 Code = serialization::DECL_FRIEND; 1664 } 1665 1666 void ASTDeclWriter::VisitFriendTemplateDecl(FriendTemplateDecl *D) { 1667 VisitDecl(D); 1668 Record.push_back(D->getNumTemplateParameters()); 1669 for (unsigned i = 0, e = D->getNumTemplateParameters(); i != e; ++i) 1670 Record.AddTemplateParameterList(D->getTemplateParameterList(i)); 1671 Record.push_back(D->getFriendDecl() != nullptr); 1672 if (D->getFriendDecl()) 1673 Record.AddDeclRef(D->getFriendDecl()); 1674 else 1675 Record.AddTypeSourceInfo(D->getFriendType()); 1676 Record.AddSourceLocation(D->getFriendLoc()); 1677 Code = serialization::DECL_FRIEND_TEMPLATE; 1678 } 1679 1680 void ASTDeclWriter::VisitTemplateDecl(TemplateDecl *D) { 1681 VisitNamedDecl(D); 1682 1683 Record.AddTemplateParameterList(D->getTemplateParameters()); 1684 Record.AddDeclRef(D->getTemplatedDecl()); 1685 } 1686 1687 void ASTDeclWriter::VisitConceptDecl(ConceptDecl *D) { 1688 VisitTemplateDecl(D); 1689 Record.AddStmt(D->getConstraintExpr()); 1690 Code = serialization::DECL_CONCEPT; 1691 } 1692 1693 void ASTDeclWriter::VisitImplicitConceptSpecializationDecl( 1694 ImplicitConceptSpecializationDecl *D) { 1695 Record.push_back(D->getTemplateArguments().size()); 1696 VisitDecl(D); 1697 for (const TemplateArgument &Arg : D->getTemplateArguments()) 1698 Record.AddTemplateArgument(Arg); 1699 Code = serialization::DECL_IMPLICIT_CONCEPT_SPECIALIZATION; 1700 } 1701 1702 void ASTDeclWriter::VisitRequiresExprBodyDecl(RequiresExprBodyDecl *D) { 1703 Code = serialization::DECL_REQUIRES_EXPR_BODY; 1704 } 1705 1706 void ASTDeclWriter::VisitRedeclarableTemplateDecl(RedeclarableTemplateDecl *D) { 1707 VisitRedeclarable(D); 1708 1709 // Emit data to initialize CommonOrPrev before VisitTemplateDecl so that 1710 // getCommonPtr() can be used while this is still initializing. 1711 if (D->isFirstDecl()) { 1712 // This declaration owns the 'common' pointer, so serialize that data now. 1713 Record.AddDeclRef(D->getInstantiatedFromMemberTemplate()); 1714 if (D->getInstantiatedFromMemberTemplate()) 1715 Record.push_back(D->isMemberSpecialization()); 1716 } 1717 1718 VisitTemplateDecl(D); 1719 Record.push_back(D->getIdentifierNamespace()); 1720 } 1721 1722 void ASTDeclWriter::VisitClassTemplateDecl(ClassTemplateDecl *D) { 1723 VisitRedeclarableTemplateDecl(D); 1724 1725 if (D->isFirstDecl()) 1726 AddTemplateSpecializations(D); 1727 1728 // Force emitting the corresponding deduction guide in reduced BMI mode. 1729 // Otherwise, the deduction guide may be optimized out incorrectly. 1730 if (Writer.isGeneratingReducedBMI()) { 1731 auto Name = Context.DeclarationNames.getCXXDeductionGuideName(D); 1732 for (auto *DG : D->getDeclContext()->noload_lookup(Name)) 1733 Writer.GetDeclRef(DG->getCanonicalDecl()); 1734 } 1735 1736 Code = serialization::DECL_CLASS_TEMPLATE; 1737 } 1738 1739 void ASTDeclWriter::VisitClassTemplateSpecializationDecl( 1740 ClassTemplateSpecializationDecl *D) { 1741 RegisterTemplateSpecialization(D->getSpecializedTemplate(), D); 1742 1743 VisitCXXRecordDecl(D); 1744 1745 llvm::PointerUnion<ClassTemplateDecl *, 1746 ClassTemplatePartialSpecializationDecl *> InstFrom 1747 = D->getSpecializedTemplateOrPartial(); 1748 if (Decl *InstFromD = InstFrom.dyn_cast<ClassTemplateDecl *>()) { 1749 Record.AddDeclRef(InstFromD); 1750 } else { 1751 Record.AddDeclRef(InstFrom.get<ClassTemplatePartialSpecializationDecl *>()); 1752 Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs()); 1753 } 1754 1755 Record.AddTemplateArgumentList(&D->getTemplateArgs()); 1756 Record.AddSourceLocation(D->getPointOfInstantiation()); 1757 Record.push_back(D->getSpecializationKind()); 1758 Record.push_back(D->isCanonicalDecl()); 1759 1760 if (D->isCanonicalDecl()) { 1761 // When reading, we'll add it to the folding set of the following template. 1762 Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl()); 1763 } 1764 1765 bool ExplicitInstantiation = 1766 D->getTemplateSpecializationKind() == 1767 TSK_ExplicitInstantiationDeclaration || 1768 D->getTemplateSpecializationKind() == TSK_ExplicitInstantiationDefinition; 1769 Record.push_back(ExplicitInstantiation); 1770 if (ExplicitInstantiation) { 1771 Record.AddSourceLocation(D->getExternKeywordLoc()); 1772 Record.AddSourceLocation(D->getTemplateKeywordLoc()); 1773 } 1774 1775 const ASTTemplateArgumentListInfo *ArgsWritten = 1776 D->getTemplateArgsAsWritten(); 1777 Record.push_back(!!ArgsWritten); 1778 if (ArgsWritten) 1779 Record.AddASTTemplateArgumentListInfo(ArgsWritten); 1780 1781 Code = serialization::DECL_CLASS_TEMPLATE_SPECIALIZATION; 1782 } 1783 1784 void ASTDeclWriter::VisitClassTemplatePartialSpecializationDecl( 1785 ClassTemplatePartialSpecializationDecl *D) { 1786 Record.AddTemplateParameterList(D->getTemplateParameters()); 1787 1788 VisitClassTemplateSpecializationDecl(D); 1789 1790 // These are read/set from/to the first declaration. 1791 if (D->getPreviousDecl() == nullptr) { 1792 Record.AddDeclRef(D->getInstantiatedFromMember()); 1793 Record.push_back(D->isMemberSpecialization()); 1794 } 1795 1796 Code = serialization::DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION; 1797 } 1798 1799 void ASTDeclWriter::VisitVarTemplateDecl(VarTemplateDecl *D) { 1800 VisitRedeclarableTemplateDecl(D); 1801 1802 if (D->isFirstDecl()) 1803 AddTemplateSpecializations(D); 1804 Code = serialization::DECL_VAR_TEMPLATE; 1805 } 1806 1807 void ASTDeclWriter::VisitVarTemplateSpecializationDecl( 1808 VarTemplateSpecializationDecl *D) { 1809 RegisterTemplateSpecialization(D->getSpecializedTemplate(), D); 1810 1811 llvm::PointerUnion<VarTemplateDecl *, VarTemplatePartialSpecializationDecl *> 1812 InstFrom = D->getSpecializedTemplateOrPartial(); 1813 if (Decl *InstFromD = InstFrom.dyn_cast<VarTemplateDecl *>()) { 1814 Record.AddDeclRef(InstFromD); 1815 } else { 1816 Record.AddDeclRef(InstFrom.get<VarTemplatePartialSpecializationDecl *>()); 1817 Record.AddTemplateArgumentList(&D->getTemplateInstantiationArgs()); 1818 } 1819 1820 bool ExplicitInstantiation = 1821 D->getTemplateSpecializationKind() == 1822 TSK_ExplicitInstantiationDeclaration || 1823 D->getTemplateSpecializationKind() == TSK_ExplicitInstantiationDefinition; 1824 Record.push_back(ExplicitInstantiation); 1825 if (ExplicitInstantiation) { 1826 Record.AddSourceLocation(D->getExternKeywordLoc()); 1827 Record.AddSourceLocation(D->getTemplateKeywordLoc()); 1828 } 1829 1830 const ASTTemplateArgumentListInfo *ArgsWritten = 1831 D->getTemplateArgsAsWritten(); 1832 Record.push_back(!!ArgsWritten); 1833 if (ArgsWritten) 1834 Record.AddASTTemplateArgumentListInfo(ArgsWritten); 1835 1836 Record.AddTemplateArgumentList(&D->getTemplateArgs()); 1837 Record.AddSourceLocation(D->getPointOfInstantiation()); 1838 Record.push_back(D->getSpecializationKind()); 1839 Record.push_back(D->IsCompleteDefinition); 1840 1841 VisitVarDecl(D); 1842 1843 Record.push_back(D->isCanonicalDecl()); 1844 1845 if (D->isCanonicalDecl()) { 1846 // When reading, we'll add it to the folding set of the following template. 1847 Record.AddDeclRef(D->getSpecializedTemplate()->getCanonicalDecl()); 1848 } 1849 1850 Code = serialization::DECL_VAR_TEMPLATE_SPECIALIZATION; 1851 } 1852 1853 void ASTDeclWriter::VisitVarTemplatePartialSpecializationDecl( 1854 VarTemplatePartialSpecializationDecl *D) { 1855 Record.AddTemplateParameterList(D->getTemplateParameters()); 1856 1857 VisitVarTemplateSpecializationDecl(D); 1858 1859 // These are read/set from/to the first declaration. 1860 if (D->getPreviousDecl() == nullptr) { 1861 Record.AddDeclRef(D->getInstantiatedFromMember()); 1862 Record.push_back(D->isMemberSpecialization()); 1863 } 1864 1865 Code = serialization::DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION; 1866 } 1867 1868 void ASTDeclWriter::VisitFunctionTemplateDecl(FunctionTemplateDecl *D) { 1869 VisitRedeclarableTemplateDecl(D); 1870 1871 if (D->isFirstDecl()) 1872 AddTemplateSpecializations(D); 1873 Code = serialization::DECL_FUNCTION_TEMPLATE; 1874 } 1875 1876 void ASTDeclWriter::VisitTemplateTypeParmDecl(TemplateTypeParmDecl *D) { 1877 Record.push_back(D->hasTypeConstraint()); 1878 VisitTypeDecl(D); 1879 1880 Record.push_back(D->wasDeclaredWithTypename()); 1881 1882 const TypeConstraint *TC = D->getTypeConstraint(); 1883 assert((bool)TC == D->hasTypeConstraint()); 1884 if (TC) { 1885 auto *CR = TC->getConceptReference(); 1886 Record.push_back(CR != nullptr); 1887 if (CR) 1888 Record.AddConceptReference(CR); 1889 Record.AddStmt(TC->getImmediatelyDeclaredConstraint()); 1890 Record.push_back(D->isExpandedParameterPack()); 1891 if (D->isExpandedParameterPack()) 1892 Record.push_back(D->getNumExpansionParameters()); 1893 } 1894 1895 bool OwnsDefaultArg = D->hasDefaultArgument() && 1896 !D->defaultArgumentWasInherited(); 1897 Record.push_back(OwnsDefaultArg); 1898 if (OwnsDefaultArg) 1899 Record.AddTemplateArgumentLoc(D->getDefaultArgument()); 1900 1901 if (!TC && !OwnsDefaultArg && 1902 D->getDeclContext() == D->getLexicalDeclContext() && 1903 !D->isInvalidDecl() && !D->hasAttrs() && 1904 !D->isTopLevelDeclInObjCContainer() && !D->isImplicit() && 1905 D->getDeclName().getNameKind() == DeclarationName::Identifier) 1906 AbbrevToUse = Writer.getDeclTemplateTypeParmAbbrev(); 1907 1908 Code = serialization::DECL_TEMPLATE_TYPE_PARM; 1909 } 1910 1911 void ASTDeclWriter::VisitNonTypeTemplateParmDecl(NonTypeTemplateParmDecl *D) { 1912 // For an expanded parameter pack, record the number of expansion types here 1913 // so that it's easier for deserialization to allocate the right amount of 1914 // memory. 1915 Expr *TypeConstraint = D->getPlaceholderTypeConstraint(); 1916 Record.push_back(!!TypeConstraint); 1917 if (D->isExpandedParameterPack()) 1918 Record.push_back(D->getNumExpansionTypes()); 1919 1920 VisitDeclaratorDecl(D); 1921 // TemplateParmPosition. 1922 Record.push_back(D->getDepth()); 1923 Record.push_back(D->getPosition()); 1924 if (TypeConstraint) 1925 Record.AddStmt(TypeConstraint); 1926 1927 if (D->isExpandedParameterPack()) { 1928 for (unsigned I = 0, N = D->getNumExpansionTypes(); I != N; ++I) { 1929 Record.AddTypeRef(D->getExpansionType(I)); 1930 Record.AddTypeSourceInfo(D->getExpansionTypeSourceInfo(I)); 1931 } 1932 1933 Code = serialization::DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK; 1934 } else { 1935 // Rest of NonTypeTemplateParmDecl. 1936 Record.push_back(D->isParameterPack()); 1937 bool OwnsDefaultArg = D->hasDefaultArgument() && 1938 !D->defaultArgumentWasInherited(); 1939 Record.push_back(OwnsDefaultArg); 1940 if (OwnsDefaultArg) 1941 Record.AddTemplateArgumentLoc(D->getDefaultArgument()); 1942 Code = serialization::DECL_NON_TYPE_TEMPLATE_PARM; 1943 } 1944 } 1945 1946 void ASTDeclWriter::VisitTemplateTemplateParmDecl(TemplateTemplateParmDecl *D) { 1947 // For an expanded parameter pack, record the number of expansion types here 1948 // so that it's easier for deserialization to allocate the right amount of 1949 // memory. 1950 if (D->isExpandedParameterPack()) 1951 Record.push_back(D->getNumExpansionTemplateParameters()); 1952 1953 VisitTemplateDecl(D); 1954 Record.push_back(D->wasDeclaredWithTypename()); 1955 // TemplateParmPosition. 1956 Record.push_back(D->getDepth()); 1957 Record.push_back(D->getPosition()); 1958 1959 if (D->isExpandedParameterPack()) { 1960 for (unsigned I = 0, N = D->getNumExpansionTemplateParameters(); 1961 I != N; ++I) 1962 Record.AddTemplateParameterList(D->getExpansionTemplateParameters(I)); 1963 Code = serialization::DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK; 1964 } else { 1965 // Rest of TemplateTemplateParmDecl. 1966 Record.push_back(D->isParameterPack()); 1967 bool OwnsDefaultArg = D->hasDefaultArgument() && 1968 !D->defaultArgumentWasInherited(); 1969 Record.push_back(OwnsDefaultArg); 1970 if (OwnsDefaultArg) 1971 Record.AddTemplateArgumentLoc(D->getDefaultArgument()); 1972 Code = serialization::DECL_TEMPLATE_TEMPLATE_PARM; 1973 } 1974 } 1975 1976 void ASTDeclWriter::VisitTypeAliasTemplateDecl(TypeAliasTemplateDecl *D) { 1977 VisitRedeclarableTemplateDecl(D); 1978 Code = serialization::DECL_TYPE_ALIAS_TEMPLATE; 1979 } 1980 1981 void ASTDeclWriter::VisitStaticAssertDecl(StaticAssertDecl *D) { 1982 VisitDecl(D); 1983 Record.AddStmt(D->getAssertExpr()); 1984 Record.push_back(D->isFailed()); 1985 Record.AddStmt(D->getMessage()); 1986 Record.AddSourceLocation(D->getRParenLoc()); 1987 Code = serialization::DECL_STATIC_ASSERT; 1988 } 1989 1990 /// Emit the DeclContext part of a declaration context decl. 1991 void ASTDeclWriter::VisitDeclContext(DeclContext *DC) { 1992 static_assert(DeclContext::NumDeclContextBits == 13, 1993 "You need to update the serializer after you change the " 1994 "DeclContextBits"); 1995 1996 uint64_t LexicalOffset = 0; 1997 uint64_t VisibleOffset = 0; 1998 1999 if (Writer.isGeneratingReducedBMI() && isa<NamespaceDecl>(DC) && 2000 cast<NamespaceDecl>(DC)->isFromExplicitGlobalModule()) { 2001 // In reduced BMI, delay writing lexical and visible block for namespace 2002 // in the global module fragment. See the comments of DelayedNamespace for 2003 // details. 2004 Writer.DelayedNamespace.push_back(cast<NamespaceDecl>(DC)); 2005 } else { 2006 LexicalOffset = Writer.WriteDeclContextLexicalBlock(Context, DC); 2007 VisibleOffset = Writer.WriteDeclContextVisibleBlock(Context, DC); 2008 } 2009 2010 Record.AddOffset(LexicalOffset); 2011 Record.AddOffset(VisibleOffset); 2012 } 2013 2014 const Decl *ASTWriter::getFirstLocalDecl(const Decl *D) { 2015 assert(IsLocalDecl(D) && "expected a local declaration"); 2016 2017 const Decl *Canon = D->getCanonicalDecl(); 2018 if (IsLocalDecl(Canon)) 2019 return Canon; 2020 2021 const Decl *&CacheEntry = FirstLocalDeclCache[Canon]; 2022 if (CacheEntry) 2023 return CacheEntry; 2024 2025 for (const Decl *Redecl = D; Redecl; Redecl = Redecl->getPreviousDecl()) 2026 if (IsLocalDecl(Redecl)) 2027 D = Redecl; 2028 return CacheEntry = D; 2029 } 2030 2031 template <typename T> 2032 void ASTDeclWriter::VisitRedeclarable(Redeclarable<T> *D) { 2033 T *First = D->getFirstDecl(); 2034 T *MostRecent = First->getMostRecentDecl(); 2035 T *DAsT = static_cast<T *>(D); 2036 if (MostRecent != First) { 2037 assert(isRedeclarableDeclKind(DAsT->getKind()) && 2038 "Not considered redeclarable?"); 2039 2040 Record.AddDeclRef(First); 2041 2042 // Write out a list of local redeclarations of this declaration if it's the 2043 // first local declaration in the chain. 2044 const Decl *FirstLocal = Writer.getFirstLocalDecl(DAsT); 2045 if (DAsT == FirstLocal) { 2046 // Emit a list of all imported first declarations so that we can be sure 2047 // that all redeclarations visible to this module are before D in the 2048 // redecl chain. 2049 unsigned I = Record.size(); 2050 Record.push_back(0); 2051 if (Writer.Chain) 2052 AddFirstDeclFromEachModule(DAsT, /*IncludeLocal*/false); 2053 // This is the number of imported first declarations + 1. 2054 Record[I] = Record.size() - I; 2055 2056 // Collect the set of local redeclarations of this declaration, from 2057 // newest to oldest. 2058 ASTWriter::RecordData LocalRedecls; 2059 ASTRecordWriter LocalRedeclWriter(Record, LocalRedecls); 2060 for (const Decl *Prev = FirstLocal->getMostRecentDecl(); 2061 Prev != FirstLocal; Prev = Prev->getPreviousDecl()) 2062 if (!Prev->isFromASTFile()) 2063 LocalRedeclWriter.AddDeclRef(Prev); 2064 2065 // If we have any redecls, write them now as a separate record preceding 2066 // the declaration itself. 2067 if (LocalRedecls.empty()) 2068 Record.push_back(0); 2069 else 2070 Record.AddOffset(LocalRedeclWriter.Emit(LOCAL_REDECLARATIONS)); 2071 } else { 2072 Record.push_back(0); 2073 Record.AddDeclRef(FirstLocal); 2074 } 2075 2076 // Make sure that we serialize both the previous and the most-recent 2077 // declarations, which (transitively) ensures that all declarations in the 2078 // chain get serialized. 2079 // 2080 // FIXME: This is not correct; when we reach an imported declaration we 2081 // won't emit its previous declaration. 2082 (void)Writer.GetDeclRef(D->getPreviousDecl()); 2083 (void)Writer.GetDeclRef(MostRecent); 2084 } else { 2085 // We use the sentinel value 0 to indicate an only declaration. 2086 Record.push_back(0); 2087 } 2088 } 2089 2090 void ASTDeclWriter::VisitHLSLBufferDecl(HLSLBufferDecl *D) { 2091 VisitNamedDecl(D); 2092 VisitDeclContext(D); 2093 Record.push_back(D->isCBuffer()); 2094 Record.AddSourceLocation(D->getLocStart()); 2095 Record.AddSourceLocation(D->getLBraceLoc()); 2096 Record.AddSourceLocation(D->getRBraceLoc()); 2097 2098 Code = serialization::DECL_HLSL_BUFFER; 2099 } 2100 2101 void ASTDeclWriter::VisitOMPThreadPrivateDecl(OMPThreadPrivateDecl *D) { 2102 Record.writeOMPChildren(D->Data); 2103 VisitDecl(D); 2104 Code = serialization::DECL_OMP_THREADPRIVATE; 2105 } 2106 2107 void ASTDeclWriter::VisitOMPAllocateDecl(OMPAllocateDecl *D) { 2108 Record.writeOMPChildren(D->Data); 2109 VisitDecl(D); 2110 Code = serialization::DECL_OMP_ALLOCATE; 2111 } 2112 2113 void ASTDeclWriter::VisitOMPRequiresDecl(OMPRequiresDecl *D) { 2114 Record.writeOMPChildren(D->Data); 2115 VisitDecl(D); 2116 Code = serialization::DECL_OMP_REQUIRES; 2117 } 2118 2119 void ASTDeclWriter::VisitOMPDeclareReductionDecl(OMPDeclareReductionDecl *D) { 2120 static_assert(DeclContext::NumOMPDeclareReductionDeclBits == 15, 2121 "You need to update the serializer after you change the " 2122 "NumOMPDeclareReductionDeclBits"); 2123 2124 VisitValueDecl(D); 2125 Record.AddSourceLocation(D->getBeginLoc()); 2126 Record.AddStmt(D->getCombinerIn()); 2127 Record.AddStmt(D->getCombinerOut()); 2128 Record.AddStmt(D->getCombiner()); 2129 Record.AddStmt(D->getInitOrig()); 2130 Record.AddStmt(D->getInitPriv()); 2131 Record.AddStmt(D->getInitializer()); 2132 Record.push_back(llvm::to_underlying(D->getInitializerKind())); 2133 Record.AddDeclRef(D->getPrevDeclInScope()); 2134 Code = serialization::DECL_OMP_DECLARE_REDUCTION; 2135 } 2136 2137 void ASTDeclWriter::VisitOMPDeclareMapperDecl(OMPDeclareMapperDecl *D) { 2138 Record.writeOMPChildren(D->Data); 2139 VisitValueDecl(D); 2140 Record.AddDeclarationName(D->getVarName()); 2141 Record.AddDeclRef(D->getPrevDeclInScope()); 2142 Code = serialization::DECL_OMP_DECLARE_MAPPER; 2143 } 2144 2145 void ASTDeclWriter::VisitOMPCapturedExprDecl(OMPCapturedExprDecl *D) { 2146 VisitVarDecl(D); 2147 Code = serialization::DECL_OMP_CAPTUREDEXPR; 2148 } 2149 2150 //===----------------------------------------------------------------------===// 2151 // ASTWriter Implementation 2152 //===----------------------------------------------------------------------===// 2153 2154 namespace { 2155 template <FunctionDecl::TemplatedKind Kind> 2156 std::shared_ptr<llvm::BitCodeAbbrev> 2157 getFunctionDeclAbbrev(serialization::DeclCode Code) { 2158 using namespace llvm; 2159 2160 auto Abv = std::make_shared<BitCodeAbbrev>(); 2161 Abv->Add(BitCodeAbbrevOp(Code)); 2162 // RedeclarableDecl 2163 Abv->Add(BitCodeAbbrevOp(0)); // CanonicalDecl 2164 Abv->Add(BitCodeAbbrevOp(Kind)); 2165 if constexpr (Kind == FunctionDecl::TK_NonTemplate) { 2166 2167 } else if constexpr (Kind == FunctionDecl::TK_FunctionTemplate) { 2168 // DescribedFunctionTemplate 2169 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 2170 } else if constexpr (Kind == FunctionDecl::TK_DependentNonTemplate) { 2171 // Instantiated From Decl 2172 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 2173 } else if constexpr (Kind == FunctionDecl::TK_MemberSpecialization) { 2174 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InstantiatedFrom 2175 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2176 3)); // TemplateSpecializationKind 2177 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Specialized Location 2178 } else if constexpr (Kind == 2179 FunctionDecl::TK_FunctionTemplateSpecialization) { 2180 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Template 2181 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2182 3)); // TemplateSpecializationKind 2183 Abv->Add(BitCodeAbbrevOp(1)); // Template Argument Size 2184 Abv->Add(BitCodeAbbrevOp(TemplateArgument::Type)); // Template Argument Kind 2185 Abv->Add( 2186 BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Template Argument Type 2187 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Is Defaulted 2188 Abv->Add(BitCodeAbbrevOp(0)); // TemplateArgumentsAsWritten 2189 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 2190 Abv->Add(BitCodeAbbrevOp(0)); 2191 Abv->Add( 2192 BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Canonical Decl of template 2193 } else if constexpr (Kind == FunctionDecl:: 2194 TK_DependentFunctionTemplateSpecialization) { 2195 // Candidates of specialization 2196 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 2197 Abv->Add(BitCodeAbbrevOp(0)); // TemplateArgumentsAsWritten 2198 } else { 2199 llvm_unreachable("Unknown templated kind?"); 2200 } 2201 // Decl 2202 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2203 8)); // Packed DeclBits: ModuleOwnershipKind, 2204 // isUsed, isReferenced, AccessSpecifier, 2205 // isImplicit 2206 // 2207 // The following bits should be 0: 2208 // HasStandaloneLexicalDC, HasAttrs, 2209 // TopLevelDeclInObjCContainer, 2210 // isInvalidDecl 2211 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 2212 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2213 // NamedDecl 2214 Abv->Add(BitCodeAbbrevOp(DeclarationName::Identifier)); // NameKind 2215 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Identifier 2216 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2217 // ValueDecl 2218 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2219 // DeclaratorDecl 2220 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerLocStart 2221 Abv->Add(BitCodeAbbrevOp(0)); // HasExtInfo 2222 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType 2223 // FunctionDecl 2224 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 11)); // IDNS 2225 Abv->Add(BitCodeAbbrevOp( 2226 BitCodeAbbrevOp::Fixed, 2227 28)); // Packed Function Bits: StorageClass, Inline, InlineSpecified, 2228 // VirtualAsWritten, Pure, HasInheritedProto, HasWrittenProto, 2229 // Deleted, Trivial, TrivialForCall, Defaulted, ExplicitlyDefaulted, 2230 // IsIneligibleOrNotSelected, ImplicitReturnZero, Constexpr, 2231 // UsesSEHTry, SkippedBody, MultiVersion, LateParsed, 2232 // FriendConstraintRefersToEnclosingTemplate, Linkage, 2233 // ShouldSkipCheckingODR 2234 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LocEnd 2235 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // ODRHash 2236 // This Array slurps the rest of the record. Fortunately we want to encode 2237 // (nearly) all the remaining (variable number of) fields in the same way. 2238 // 2239 // This is: 2240 // NumParams and Params[] from FunctionDecl, and 2241 // NumOverriddenMethods, OverriddenMethods[] from CXXMethodDecl. 2242 // 2243 // Add an AbbrevOp for 'size then elements' and use it here. 2244 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 2245 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); 2246 return Abv; 2247 } 2248 2249 template <FunctionDecl::TemplatedKind Kind> 2250 std::shared_ptr<llvm::BitCodeAbbrev> getCXXMethodAbbrev() { 2251 return getFunctionDeclAbbrev<Kind>(serialization::DECL_CXX_METHOD); 2252 } 2253 } // namespace 2254 2255 void ASTWriter::WriteDeclAbbrevs() { 2256 using namespace llvm; 2257 2258 std::shared_ptr<BitCodeAbbrev> Abv; 2259 2260 // Abbreviation for DECL_FIELD 2261 Abv = std::make_shared<BitCodeAbbrev>(); 2262 Abv->Add(BitCodeAbbrevOp(serialization::DECL_FIELD)); 2263 // Decl 2264 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2265 7)); // Packed DeclBits: ModuleOwnershipKind, 2266 // isUsed, isReferenced, AccessSpecifier, 2267 // 2268 // The following bits should be 0: 2269 // isImplicit, HasStandaloneLexicalDC, HasAttrs, 2270 // TopLevelDeclInObjCContainer, 2271 // isInvalidDecl 2272 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 2273 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2274 // NamedDecl 2275 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 2276 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 2277 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2278 // ValueDecl 2279 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2280 // DeclaratorDecl 2281 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 2282 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 2283 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType 2284 // FieldDecl 2285 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 2286 Abv->Add(BitCodeAbbrevOp(0)); // StorageKind 2287 // Type Source Info 2288 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 2289 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 2290 DeclFieldAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2291 2292 // Abbreviation for DECL_OBJC_IVAR 2293 Abv = std::make_shared<BitCodeAbbrev>(); 2294 Abv->Add(BitCodeAbbrevOp(serialization::DECL_OBJC_IVAR)); 2295 // Decl 2296 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2297 12)); // Packed DeclBits: HasStandaloneLexicalDC, 2298 // isInvalidDecl, HasAttrs, isImplicit, isUsed, 2299 // isReferenced, TopLevelDeclInObjCContainer, 2300 // AccessSpecifier, ModuleOwnershipKind 2301 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 2302 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2303 // NamedDecl 2304 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 2305 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 2306 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2307 // ValueDecl 2308 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2309 // DeclaratorDecl 2310 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 2311 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 2312 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType 2313 // FieldDecl 2314 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // isMutable 2315 Abv->Add(BitCodeAbbrevOp(0)); // InitStyle 2316 // ObjC Ivar 2317 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getAccessControl 2318 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getSynthesize 2319 // Type Source Info 2320 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 2321 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 2322 DeclObjCIvarAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2323 2324 // Abbreviation for DECL_ENUM 2325 Abv = std::make_shared<BitCodeAbbrev>(); 2326 Abv->Add(BitCodeAbbrevOp(serialization::DECL_ENUM)); 2327 // Redeclarable 2328 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 2329 // Decl 2330 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2331 7)); // Packed DeclBits: ModuleOwnershipKind, 2332 // isUsed, isReferenced, AccessSpecifier, 2333 // 2334 // The following bits should be 0: 2335 // isImplicit, HasStandaloneLexicalDC, HasAttrs, 2336 // TopLevelDeclInObjCContainer, 2337 // isInvalidDecl 2338 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 2339 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2340 // NamedDecl 2341 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 2342 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 2343 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2344 // TypeDecl 2345 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 2346 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 2347 // TagDecl 2348 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 2349 Abv->Add(BitCodeAbbrevOp( 2350 BitCodeAbbrevOp::Fixed, 2351 9)); // Packed Tag Decl Bits: getTagKind, isCompleteDefinition, 2352 // EmbeddedInDeclarator, IsFreeStanding, 2353 // isCompleteDefinitionRequired, ExtInfoKind 2354 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 2355 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 2356 // EnumDecl 2357 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // AddTypeRef 2358 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IntegerType 2359 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getPromotionType 2360 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 20)); // Enum Decl Bits 2361 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));// ODRHash 2362 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InstantiatedMembEnum 2363 // DC 2364 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 2365 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 2366 DeclEnumAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2367 2368 // Abbreviation for DECL_RECORD 2369 Abv = std::make_shared<BitCodeAbbrev>(); 2370 Abv->Add(BitCodeAbbrevOp(serialization::DECL_RECORD)); 2371 // Redeclarable 2372 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 2373 // Decl 2374 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2375 7)); // Packed DeclBits: ModuleOwnershipKind, 2376 // isUsed, isReferenced, AccessSpecifier, 2377 // 2378 // The following bits should be 0: 2379 // isImplicit, HasStandaloneLexicalDC, HasAttrs, 2380 // TopLevelDeclInObjCContainer, 2381 // isInvalidDecl 2382 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 2383 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2384 // NamedDecl 2385 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 2386 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 2387 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2388 // TypeDecl 2389 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 2390 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 2391 // TagDecl 2392 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // IdentifierNamespace 2393 Abv->Add(BitCodeAbbrevOp( 2394 BitCodeAbbrevOp::Fixed, 2395 9)); // Packed Tag Decl Bits: getTagKind, isCompleteDefinition, 2396 // EmbeddedInDeclarator, IsFreeStanding, 2397 // isCompleteDefinitionRequired, ExtInfoKind 2398 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 2399 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SourceLocation 2400 // RecordDecl 2401 Abv->Add(BitCodeAbbrevOp( 2402 BitCodeAbbrevOp::Fixed, 2403 13)); // Packed Record Decl Bits: FlexibleArrayMember, 2404 // AnonymousStructUnion, hasObjectMember, hasVolatileMember, 2405 // isNonTrivialToPrimitiveDefaultInitialize, 2406 // isNonTrivialToPrimitiveCopy, isNonTrivialToPrimitiveDestroy, 2407 // hasNonTrivialToPrimitiveDefaultInitializeCUnion, 2408 // hasNonTrivialToPrimitiveDestructCUnion, 2409 // hasNonTrivialToPrimitiveCopyCUnion, isParamDestroyedInCallee, 2410 // getArgPassingRestrictions 2411 // ODRHash 2412 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 26)); 2413 2414 // DC 2415 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LexicalOffset 2416 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // VisibleOffset 2417 DeclRecordAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2418 2419 // Abbreviation for DECL_PARM_VAR 2420 Abv = std::make_shared<BitCodeAbbrev>(); 2421 Abv->Add(BitCodeAbbrevOp(serialization::DECL_PARM_VAR)); 2422 // Redeclarable 2423 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 2424 // Decl 2425 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2426 8)); // Packed DeclBits: ModuleOwnershipKind, isUsed, 2427 // isReferenced, AccessSpecifier, 2428 // HasStandaloneLexicalDC, HasAttrs, isImplicit, 2429 // TopLevelDeclInObjCContainer, 2430 // isInvalidDecl, 2431 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 2432 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2433 // NamedDecl 2434 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 2435 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 2436 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2437 // ValueDecl 2438 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2439 // DeclaratorDecl 2440 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 2441 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 2442 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType 2443 // VarDecl 2444 Abv->Add( 2445 BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2446 12)); // Packed Var Decl bits: SClass, TSCSpec, InitStyle, 2447 // isARCPseudoStrong, Linkage, ModulesCodegen 2448 Abv->Add(BitCodeAbbrevOp(0)); // VarKind (local enum) 2449 // ParmVarDecl 2450 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ScopeIndex 2451 Abv->Add(BitCodeAbbrevOp( 2452 BitCodeAbbrevOp::Fixed, 2453 19)); // Packed Parm Var Decl bits: IsObjCMethodParameter, ScopeDepth, 2454 // ObjCDeclQualifier, KNRPromoted, 2455 // HasInheritedDefaultArg, HasUninstantiatedDefaultArg 2456 // Type Source Info 2457 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 2458 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 2459 DeclParmVarAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2460 2461 // Abbreviation for DECL_TYPEDEF 2462 Abv = std::make_shared<BitCodeAbbrev>(); 2463 Abv->Add(BitCodeAbbrevOp(serialization::DECL_TYPEDEF)); 2464 // Redeclarable 2465 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 2466 // Decl 2467 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2468 7)); // Packed DeclBits: ModuleOwnershipKind, 2469 // isReferenced, isUsed, AccessSpecifier. Other 2470 // higher bits should be 0: isImplicit, 2471 // HasStandaloneLexicalDC, HasAttrs, 2472 // TopLevelDeclInObjCContainer, isInvalidDecl 2473 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 2474 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2475 // NamedDecl 2476 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 2477 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 2478 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2479 // TypeDecl 2480 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 2481 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 2482 // TypedefDecl 2483 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 2484 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 2485 DeclTypedefAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2486 2487 // Abbreviation for DECL_VAR 2488 Abv = std::make_shared<BitCodeAbbrev>(); 2489 Abv->Add(BitCodeAbbrevOp(serialization::DECL_VAR)); 2490 // Redeclarable 2491 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 2492 // Decl 2493 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2494 12)); // Packed DeclBits: HasStandaloneLexicalDC, 2495 // isInvalidDecl, HasAttrs, isImplicit, isUsed, 2496 // isReferenced, TopLevelDeclInObjCContainer, 2497 // AccessSpecifier, ModuleOwnershipKind 2498 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 2499 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2500 // NamedDecl 2501 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 2502 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 2503 Abv->Add(BitCodeAbbrevOp(0)); // AnonDeclNumber 2504 // ValueDecl 2505 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2506 // DeclaratorDecl 2507 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // InnerStartLoc 2508 Abv->Add(BitCodeAbbrevOp(0)); // hasExtInfo 2509 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TSIType 2510 // VarDecl 2511 Abv->Add(BitCodeAbbrevOp( 2512 BitCodeAbbrevOp::Fixed, 2513 21)); // Packed Var Decl bits: Linkage, ModulesCodegen, 2514 // SClass, TSCSpec, InitStyle, 2515 // isARCPseudoStrong, IsThisDeclarationADemotedDefinition, 2516 // isExceptionVariable, isNRVOVariable, isCXXForRangeDecl, 2517 // isInline, isInlineSpecified, isConstexpr, 2518 // isInitCapture, isPrevDeclInSameScope, 2519 // EscapingByref, HasDeducedType, ImplicitParamKind, isObjCForDecl 2520 Abv->Add(BitCodeAbbrevOp(0)); // VarKind (local enum) 2521 // Type Source Info 2522 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array)); 2523 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TypeLoc 2524 DeclVarAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2525 2526 // Abbreviation for DECL_CXX_METHOD 2527 DeclCXXMethodAbbrev = 2528 Stream.EmitAbbrev(getCXXMethodAbbrev<FunctionDecl::TK_NonTemplate>()); 2529 DeclTemplateCXXMethodAbbrev = Stream.EmitAbbrev( 2530 getCXXMethodAbbrev<FunctionDecl::TK_FunctionTemplate>()); 2531 DeclDependentNonTemplateCXXMethodAbbrev = Stream.EmitAbbrev( 2532 getCXXMethodAbbrev<FunctionDecl::TK_DependentNonTemplate>()); 2533 DeclMemberSpecializedCXXMethodAbbrev = Stream.EmitAbbrev( 2534 getCXXMethodAbbrev<FunctionDecl::TK_MemberSpecialization>()); 2535 DeclTemplateSpecializedCXXMethodAbbrev = Stream.EmitAbbrev( 2536 getCXXMethodAbbrev<FunctionDecl::TK_FunctionTemplateSpecialization>()); 2537 DeclDependentSpecializationCXXMethodAbbrev = Stream.EmitAbbrev( 2538 getCXXMethodAbbrev< 2539 FunctionDecl::TK_DependentFunctionTemplateSpecialization>()); 2540 2541 // Abbreviation for DECL_TEMPLATE_TYPE_PARM 2542 Abv = std::make_shared<BitCodeAbbrev>(); 2543 Abv->Add(BitCodeAbbrevOp(serialization::DECL_TEMPLATE_TYPE_PARM)); 2544 Abv->Add(BitCodeAbbrevOp(0)); // hasTypeConstraint 2545 // Decl 2546 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2547 7)); // Packed DeclBits: ModuleOwnershipKind, 2548 // isReferenced, isUsed, AccessSpecifier. Other 2549 // higher bits should be 0: isImplicit, 2550 // HasStandaloneLexicalDC, HasAttrs, 2551 // TopLevelDeclInObjCContainer, isInvalidDecl 2552 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 2553 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2554 // NamedDecl 2555 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 2556 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 2557 Abv->Add(BitCodeAbbrevOp(0)); 2558 // TypeDecl 2559 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 2560 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type Ref 2561 // TemplateTypeParmDecl 2562 Abv->Add( 2563 BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // wasDeclaredWithTypename 2564 Abv->Add(BitCodeAbbrevOp(0)); // OwnsDefaultArg 2565 DeclTemplateTypeParmAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2566 2567 // Abbreviation for DECL_USING_SHADOW 2568 Abv = std::make_shared<BitCodeAbbrev>(); 2569 Abv->Add(BitCodeAbbrevOp(serialization::DECL_USING_SHADOW)); 2570 // Redeclarable 2571 Abv->Add(BitCodeAbbrevOp(0)); // No redeclaration 2572 // Decl 2573 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2574 12)); // Packed DeclBits: HasStandaloneLexicalDC, 2575 // isInvalidDecl, HasAttrs, isImplicit, isUsed, 2576 // isReferenced, TopLevelDeclInObjCContainer, 2577 // AccessSpecifier, ModuleOwnershipKind 2578 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclContext 2579 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // SubmoduleID 2580 // NamedDecl 2581 Abv->Add(BitCodeAbbrevOp(0)); // NameKind = Identifier 2582 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Name 2583 Abv->Add(BitCodeAbbrevOp(0)); 2584 // UsingShadowDecl 2585 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // TargetDecl 2586 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 11)); // IDNS 2587 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // UsingOrNextShadow 2588 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 2589 6)); // InstantiatedFromUsingShadowDecl 2590 DeclUsingShadowAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2591 2592 // Abbreviation for EXPR_DECL_REF 2593 Abv = std::make_shared<BitCodeAbbrev>(); 2594 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_DECL_REF)); 2595 // Stmt 2596 // Expr 2597 // PackingBits: DependenceKind, ValueKind. ObjectKind should be 0. 2598 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 7)); 2599 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2600 // DeclRefExpr 2601 // Packing Bits: , HadMultipleCandidates, RefersToEnclosingVariableOrCapture, 2602 // IsImmediateEscalating, NonOdrUseReason. 2603 // GetDeclFound, HasQualifier and ExplicitTemplateArgs should be 0. 2604 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 5)); 2605 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // DeclRef 2606 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 2607 DeclRefExprAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2608 2609 // Abbreviation for EXPR_INTEGER_LITERAL 2610 Abv = std::make_shared<BitCodeAbbrev>(); 2611 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_INTEGER_LITERAL)); 2612 //Stmt 2613 // Expr 2614 // DependenceKind, ValueKind, ObjectKind 2615 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 10)); 2616 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2617 // Integer Literal 2618 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 2619 Abv->Add(BitCodeAbbrevOp(32)); // Bit Width 2620 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Value 2621 IntegerLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2622 2623 // Abbreviation for EXPR_CHARACTER_LITERAL 2624 Abv = std::make_shared<BitCodeAbbrev>(); 2625 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CHARACTER_LITERAL)); 2626 //Stmt 2627 // Expr 2628 // DependenceKind, ValueKind, ObjectKind 2629 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 10)); 2630 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2631 // Character Literal 2632 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // getValue 2633 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Location 2634 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // getKind 2635 CharacterLiteralAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2636 2637 // Abbreviation for EXPR_IMPLICIT_CAST 2638 Abv = std::make_shared<BitCodeAbbrev>(); 2639 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_IMPLICIT_CAST)); 2640 // Stmt 2641 // Expr 2642 // Packing Bits: DependenceKind, ValueKind, ObjectKind, 2643 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 10)); 2644 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2645 // CastExpr 2646 Abv->Add(BitCodeAbbrevOp(0)); // PathSize 2647 // Packing Bits: CastKind, StoredFPFeatures, isPartOfExplicitCast 2648 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 9)); 2649 // ImplicitCastExpr 2650 ExprImplicitCastAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2651 2652 // Abbreviation for EXPR_BINARY_OPERATOR 2653 Abv = std::make_shared<BitCodeAbbrev>(); 2654 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_BINARY_OPERATOR)); 2655 // Stmt 2656 // Expr 2657 // Packing Bits: DependenceKind. ValueKind and ObjectKind should 2658 // be 0 in this case. 2659 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 5)); 2660 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2661 // BinaryOperator 2662 Abv->Add( 2663 BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // OpCode and HasFPFeatures 2664 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 2665 BinaryOperatorAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2666 2667 // Abbreviation for EXPR_COMPOUND_ASSIGN_OPERATOR 2668 Abv = std::make_shared<BitCodeAbbrev>(); 2669 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_COMPOUND_ASSIGN_OPERATOR)); 2670 // Stmt 2671 // Expr 2672 // Packing Bits: DependenceKind. ValueKind and ObjectKind should 2673 // be 0 in this case. 2674 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 5)); 2675 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2676 // BinaryOperator 2677 // Packing Bits: OpCode. The HasFPFeatures bit should be 0 2678 Abv->Add( 2679 BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // OpCode and HasFPFeatures 2680 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 2681 // CompoundAssignOperator 2682 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // LHSType 2683 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Result Type 2684 CompoundAssignOperatorAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2685 2686 // Abbreviation for EXPR_CALL 2687 Abv = std::make_shared<BitCodeAbbrev>(); 2688 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CALL)); 2689 // Stmt 2690 // Expr 2691 // Packing Bits: DependenceKind, ValueKind, ObjectKind, 2692 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 10)); 2693 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2694 // CallExpr 2695 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // NumArgs 2696 Abv->Add(BitCodeAbbrevOp(0)); // ADLCallKind 2697 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 2698 CallExprAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2699 2700 // Abbreviation for EXPR_CXX_OPERATOR_CALL 2701 Abv = std::make_shared<BitCodeAbbrev>(); 2702 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CXX_OPERATOR_CALL)); 2703 // Stmt 2704 // Expr 2705 // Packing Bits: DependenceKind, ValueKind, ObjectKind, 2706 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 10)); 2707 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2708 // CallExpr 2709 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // NumArgs 2710 Abv->Add(BitCodeAbbrevOp(0)); // ADLCallKind 2711 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 2712 // CXXOperatorCallExpr 2713 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Operator Kind 2714 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 2715 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 2716 CXXOperatorCallExprAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2717 2718 // Abbreviation for EXPR_CXX_MEMBER_CALL 2719 Abv = std::make_shared<BitCodeAbbrev>(); 2720 Abv->Add(BitCodeAbbrevOp(serialization::EXPR_CXX_MEMBER_CALL)); 2721 // Stmt 2722 // Expr 2723 // Packing Bits: DependenceKind, ValueKind, ObjectKind, 2724 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 10)); 2725 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type 2726 // CallExpr 2727 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // NumArgs 2728 Abv->Add(BitCodeAbbrevOp(0)); // ADLCallKind 2729 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 2730 // CXXMemberCallExpr 2731 CXXMemberCallExprAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2732 2733 // Abbreviation for STMT_COMPOUND 2734 Abv = std::make_shared<BitCodeAbbrev>(); 2735 Abv->Add(BitCodeAbbrevOp(serialization::STMT_COMPOUND)); 2736 // Stmt 2737 // CompoundStmt 2738 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Num Stmts 2739 Abv->Add(BitCodeAbbrevOp(0)); // hasStoredFPFeatures 2740 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 2741 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Source Location 2742 CompoundStmtAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2743 2744 Abv = std::make_shared<BitCodeAbbrev>(); 2745 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_LEXICAL)); 2746 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2747 DeclContextLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2748 2749 Abv = std::make_shared<BitCodeAbbrev>(); 2750 Abv->Add(BitCodeAbbrevOp(serialization::DECL_CONTEXT_VISIBLE)); 2751 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2752 DeclContextVisibleLookupAbbrev = Stream.EmitAbbrev(std::move(Abv)); 2753 } 2754 2755 /// isRequiredDecl - Check if this is a "required" Decl, which must be seen by 2756 /// consumers of the AST. 2757 /// 2758 /// Such decls will always be deserialized from the AST file, so we would like 2759 /// this to be as restrictive as possible. Currently the predicate is driven by 2760 /// code generation requirements, if other clients have a different notion of 2761 /// what is "required" then we may have to consider an alternate scheme where 2762 /// clients can iterate over the top-level decls and get information on them, 2763 /// without necessary deserializing them. We could explicitly require such 2764 /// clients to use a separate API call to "realize" the decl. This should be 2765 /// relatively painless since they would presumably only do it for top-level 2766 /// decls. 2767 static bool isRequiredDecl(const Decl *D, ASTContext &Context, 2768 Module *WritingModule) { 2769 // Named modules have different semantics than header modules. Every named 2770 // module units owns a translation unit. So the importer of named modules 2771 // doesn't need to deserilize everything ahead of time. 2772 if (WritingModule && WritingModule->isNamedModule()) { 2773 // The PragmaCommentDecl and PragmaDetectMismatchDecl are MSVC's extension. 2774 // And the behavior of MSVC for such cases will leak this to the module 2775 // users. Given pragma is not a standard thing, the compiler has the space 2776 // to do their own decision. Let's follow MSVC here. 2777 if (isa<PragmaCommentDecl, PragmaDetectMismatchDecl>(D)) 2778 return true; 2779 return false; 2780 } 2781 2782 // An ObjCMethodDecl is never considered as "required" because its 2783 // implementation container always is. 2784 2785 // File scoped assembly or obj-c or OMP declare target implementation must be 2786 // seen. 2787 if (isa<FileScopeAsmDecl, TopLevelStmtDecl, ObjCImplDecl>(D)) 2788 return true; 2789 2790 if (WritingModule && isPartOfPerModuleInitializer(D)) { 2791 // These declarations are part of the module initializer, and are emitted 2792 // if and when the module is imported, rather than being emitted eagerly. 2793 return false; 2794 } 2795 2796 return Context.DeclMustBeEmitted(D); 2797 } 2798 2799 void ASTWriter::WriteDecl(ASTContext &Context, Decl *D) { 2800 PrettyDeclStackTraceEntry CrashInfo(Context, D, SourceLocation(), 2801 "serializing"); 2802 2803 // Determine the ID for this declaration. 2804 LocalDeclID ID; 2805 assert(!D->isFromASTFile() && "should not be emitting imported decl"); 2806 LocalDeclID &IDR = DeclIDs[D]; 2807 if (IDR.isInvalid()) 2808 IDR = NextDeclID++; 2809 2810 ID = IDR; 2811 2812 assert(ID >= FirstDeclID && "invalid decl ID"); 2813 2814 RecordData Record; 2815 ASTDeclWriter W(*this, Context, Record, GeneratingReducedBMI); 2816 2817 // Build a record for this declaration 2818 W.Visit(D); 2819 2820 // Emit this declaration to the bitstream. 2821 uint64_t Offset = W.Emit(D); 2822 2823 // Record the offset for this declaration 2824 SourceLocation Loc = D->getLocation(); 2825 SourceLocationEncoding::RawLocEncoding RawLoc = 2826 getRawSourceLocationEncoding(getAdjustedLocation(Loc)); 2827 2828 unsigned Index = ID.getRawValue() - FirstDeclID.getRawValue(); 2829 if (DeclOffsets.size() == Index) 2830 DeclOffsets.emplace_back(RawLoc, Offset, DeclTypesBlockStartOffset); 2831 else if (DeclOffsets.size() < Index) { 2832 // FIXME: Can/should this happen? 2833 DeclOffsets.resize(Index+1); 2834 DeclOffsets[Index].setRawLoc(RawLoc); 2835 DeclOffsets[Index].setBitOffset(Offset, DeclTypesBlockStartOffset); 2836 } else { 2837 llvm_unreachable("declarations should be emitted in ID order"); 2838 } 2839 2840 SourceManager &SM = Context.getSourceManager(); 2841 if (Loc.isValid() && SM.isLocalSourceLocation(Loc)) 2842 associateDeclWithFile(D, ID); 2843 2844 // Note declarations that should be deserialized eagerly so that we can add 2845 // them to a record in the AST file later. 2846 if (isRequiredDecl(D, Context, WritingModule)) 2847 AddDeclRef(D, EagerlyDeserializedDecls); 2848 } 2849 2850 void ASTRecordWriter::AddFunctionDefinition(const FunctionDecl *FD) { 2851 // Switch case IDs are per function body. 2852 Writer->ClearSwitchCaseIDs(); 2853 2854 assert(FD->doesThisDeclarationHaveABody()); 2855 bool ModulesCodegen = false; 2856 if (!FD->isDependentContext()) { 2857 std::optional<GVALinkage> Linkage; 2858 if (Writer->WritingModule && 2859 Writer->WritingModule->isInterfaceOrPartition()) { 2860 // When building a C++20 module interface unit or a partition unit, a 2861 // strong definition in the module interface is provided by the 2862 // compilation of that unit, not by its users. (Inline functions are still 2863 // emitted in module users.) 2864 Linkage = Writer->Context->GetGVALinkageForFunction(FD); 2865 ModulesCodegen = *Linkage >= GVA_StrongExternal; 2866 } 2867 if (Writer->Context->getLangOpts().ModulesCodegen || 2868 (FD->hasAttr<DLLExportAttr>() && 2869 Writer->Context->getLangOpts().BuildingPCHWithObjectFile)) { 2870 2871 // Under -fmodules-codegen, codegen is performed for all non-internal, 2872 // non-always_inline functions, unless they are available elsewhere. 2873 if (!FD->hasAttr<AlwaysInlineAttr>()) { 2874 if (!Linkage) 2875 Linkage = Writer->Context->GetGVALinkageForFunction(FD); 2876 ModulesCodegen = 2877 *Linkage != GVA_Internal && *Linkage != GVA_AvailableExternally; 2878 } 2879 } 2880 } 2881 Record->push_back(ModulesCodegen); 2882 if (ModulesCodegen) 2883 Writer->AddDeclRef(FD, Writer->ModularCodegenDecls); 2884 if (auto *CD = dyn_cast<CXXConstructorDecl>(FD)) { 2885 Record->push_back(CD->getNumCtorInitializers()); 2886 if (CD->getNumCtorInitializers()) 2887 AddCXXCtorInitializers(llvm::ArrayRef(CD->init_begin(), CD->init_end())); 2888 } 2889 AddStmt(FD->getBody()); 2890 } 2891