ASTWriter.cpp revision a126f17ca83b985300c1f65cee647bea108db657
1//===--- ASTWriter.cpp - AST File Writer ----------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file defines the ASTWriter class, which writes AST files. 11// 12//===----------------------------------------------------------------------===// 13 14#include "clang/Serialization/ASTWriter.h" 15#include "clang/Serialization/ASTSerializationListener.h" 16#include "ASTCommon.h" 17#include "clang/Sema/Sema.h" 18#include "clang/Sema/IdentifierResolver.h" 19#include "clang/AST/ASTContext.h" 20#include "clang/AST/Decl.h" 21#include "clang/AST/DeclContextInternals.h" 22#include "clang/AST/DeclTemplate.h" 23#include "clang/AST/DeclFriend.h" 24#include "clang/AST/Expr.h" 25#include "clang/AST/ExprCXX.h" 26#include "clang/AST/Type.h" 27#include "clang/AST/TypeLocVisitor.h" 28#include "clang/Serialization/ASTReader.h" 29#include "clang/Lex/MacroInfo.h" 30#include "clang/Lex/PreprocessingRecord.h" 31#include "clang/Lex/Preprocessor.h" 32#include "clang/Lex/HeaderSearch.h" 33#include "clang/Basic/FileManager.h" 34#include "clang/Basic/FileSystemStatCache.h" 35#include "clang/Basic/OnDiskHashTable.h" 36#include "clang/Basic/SourceManager.h" 37#include "clang/Basic/SourceManagerInternals.h" 38#include "clang/Basic/TargetInfo.h" 39#include "clang/Basic/Version.h" 40#include "clang/Basic/VersionTuple.h" 41#include "llvm/ADT/APFloat.h" 42#include "llvm/ADT/APInt.h" 43#include "llvm/ADT/StringExtras.h" 44#include "llvm/Bitcode/BitstreamWriter.h" 45#include "llvm/Support/FileSystem.h" 46#include "llvm/Support/MemoryBuffer.h" 47#include "llvm/Support/Path.h" 48#include <algorithm> 49#include <cstdio> 50#include <string.h> 51#include <utility> 52using namespace clang; 53using namespace clang::serialization; 54 55template <typename T, typename Allocator> 56static StringRef data(const std::vector<T, Allocator> &v) { 57 if (v.empty()) return StringRef(); 58 return StringRef(reinterpret_cast<const char*>(&v[0]), 59 sizeof(T) * v.size()); 60} 61 62template <typename T> 63static StringRef data(const SmallVectorImpl<T> &v) { 64 return StringRef(reinterpret_cast<const char*>(v.data()), 65 sizeof(T) * v.size()); 66} 67 68//===----------------------------------------------------------------------===// 69// Type serialization 70//===----------------------------------------------------------------------===// 71 72namespace { 73 class ASTTypeWriter { 74 ASTWriter &Writer; 75 ASTWriter::RecordDataImpl &Record; 76 77 public: 78 /// \brief Type code that corresponds to the record generated. 79 TypeCode Code; 80 81 ASTTypeWriter(ASTWriter &Writer, ASTWriter::RecordDataImpl &Record) 82 : Writer(Writer), Record(Record), Code(TYPE_EXT_QUAL) { } 83 84 void VisitArrayType(const ArrayType *T); 85 void VisitFunctionType(const FunctionType *T); 86 void VisitTagType(const TagType *T); 87 88#define TYPE(Class, Base) void Visit##Class##Type(const Class##Type *T); 89#define ABSTRACT_TYPE(Class, Base) 90#include "clang/AST/TypeNodes.def" 91 }; 92} 93 94void ASTTypeWriter::VisitBuiltinType(const BuiltinType *T) { 95 assert(false && "Built-in types are never serialized"); 96} 97 98void ASTTypeWriter::VisitComplexType(const ComplexType *T) { 99 Writer.AddTypeRef(T->getElementType(), Record); 100 Code = TYPE_COMPLEX; 101} 102 103void ASTTypeWriter::VisitPointerType(const PointerType *T) { 104 Writer.AddTypeRef(T->getPointeeType(), Record); 105 Code = TYPE_POINTER; 106} 107 108void ASTTypeWriter::VisitBlockPointerType(const BlockPointerType *T) { 109 Writer.AddTypeRef(T->getPointeeType(), Record); 110 Code = TYPE_BLOCK_POINTER; 111} 112 113void ASTTypeWriter::VisitLValueReferenceType(const LValueReferenceType *T) { 114 Writer.AddTypeRef(T->getPointeeTypeAsWritten(), Record); 115 Record.push_back(T->isSpelledAsLValue()); 116 Code = TYPE_LVALUE_REFERENCE; 117} 118 119void ASTTypeWriter::VisitRValueReferenceType(const RValueReferenceType *T) { 120 Writer.AddTypeRef(T->getPointeeTypeAsWritten(), Record); 121 Code = TYPE_RVALUE_REFERENCE; 122} 123 124void ASTTypeWriter::VisitMemberPointerType(const MemberPointerType *T) { 125 Writer.AddTypeRef(T->getPointeeType(), Record); 126 Writer.AddTypeRef(QualType(T->getClass(), 0), Record); 127 Code = TYPE_MEMBER_POINTER; 128} 129 130void ASTTypeWriter::VisitArrayType(const ArrayType *T) { 131 Writer.AddTypeRef(T->getElementType(), Record); 132 Record.push_back(T->getSizeModifier()); // FIXME: stable values 133 Record.push_back(T->getIndexTypeCVRQualifiers()); // FIXME: stable values 134} 135 136void ASTTypeWriter::VisitConstantArrayType(const ConstantArrayType *T) { 137 VisitArrayType(T); 138 Writer.AddAPInt(T->getSize(), Record); 139 Code = TYPE_CONSTANT_ARRAY; 140} 141 142void ASTTypeWriter::VisitIncompleteArrayType(const IncompleteArrayType *T) { 143 VisitArrayType(T); 144 Code = TYPE_INCOMPLETE_ARRAY; 145} 146 147void ASTTypeWriter::VisitVariableArrayType(const VariableArrayType *T) { 148 VisitArrayType(T); 149 Writer.AddSourceLocation(T->getLBracketLoc(), Record); 150 Writer.AddSourceLocation(T->getRBracketLoc(), Record); 151 Writer.AddStmt(T->getSizeExpr()); 152 Code = TYPE_VARIABLE_ARRAY; 153} 154 155void ASTTypeWriter::VisitVectorType(const VectorType *T) { 156 Writer.AddTypeRef(T->getElementType(), Record); 157 Record.push_back(T->getNumElements()); 158 Record.push_back(T->getVectorKind()); 159 Code = TYPE_VECTOR; 160} 161 162void ASTTypeWriter::VisitExtVectorType(const ExtVectorType *T) { 163 VisitVectorType(T); 164 Code = TYPE_EXT_VECTOR; 165} 166 167void ASTTypeWriter::VisitFunctionType(const FunctionType *T) { 168 Writer.AddTypeRef(T->getResultType(), Record); 169 FunctionType::ExtInfo C = T->getExtInfo(); 170 Record.push_back(C.getNoReturn()); 171 Record.push_back(C.getHasRegParm()); 172 Record.push_back(C.getRegParm()); 173 // FIXME: need to stabilize encoding of calling convention... 174 Record.push_back(C.getCC()); 175 Record.push_back(C.getProducesResult()); 176} 177 178void ASTTypeWriter::VisitFunctionNoProtoType(const FunctionNoProtoType *T) { 179 VisitFunctionType(T); 180 Code = TYPE_FUNCTION_NO_PROTO; 181} 182 183void ASTTypeWriter::VisitFunctionProtoType(const FunctionProtoType *T) { 184 VisitFunctionType(T); 185 Record.push_back(T->getNumArgs()); 186 for (unsigned I = 0, N = T->getNumArgs(); I != N; ++I) 187 Writer.AddTypeRef(T->getArgType(I), Record); 188 Record.push_back(T->isVariadic()); 189 Record.push_back(T->getTypeQuals()); 190 Record.push_back(static_cast<unsigned>(T->getRefQualifier())); 191 Record.push_back(T->getExceptionSpecType()); 192 if (T->getExceptionSpecType() == EST_Dynamic) { 193 Record.push_back(T->getNumExceptions()); 194 for (unsigned I = 0, N = T->getNumExceptions(); I != N; ++I) 195 Writer.AddTypeRef(T->getExceptionType(I), Record); 196 } else if (T->getExceptionSpecType() == EST_ComputedNoexcept) { 197 Writer.AddStmt(T->getNoexceptExpr()); 198 } 199 Code = TYPE_FUNCTION_PROTO; 200} 201 202void ASTTypeWriter::VisitUnresolvedUsingType(const UnresolvedUsingType *T) { 203 Writer.AddDeclRef(T->getDecl(), Record); 204 Code = TYPE_UNRESOLVED_USING; 205} 206 207void ASTTypeWriter::VisitTypedefType(const TypedefType *T) { 208 Writer.AddDeclRef(T->getDecl(), Record); 209 assert(!T->isCanonicalUnqualified() && "Invalid typedef ?"); 210 Writer.AddTypeRef(T->getCanonicalTypeInternal(), Record); 211 Code = TYPE_TYPEDEF; 212} 213 214void ASTTypeWriter::VisitTypeOfExprType(const TypeOfExprType *T) { 215 Writer.AddStmt(T->getUnderlyingExpr()); 216 Code = TYPE_TYPEOF_EXPR; 217} 218 219void ASTTypeWriter::VisitTypeOfType(const TypeOfType *T) { 220 Writer.AddTypeRef(T->getUnderlyingType(), Record); 221 Code = TYPE_TYPEOF; 222} 223 224void ASTTypeWriter::VisitDecltypeType(const DecltypeType *T) { 225 Writer.AddStmt(T->getUnderlyingExpr()); 226 Code = TYPE_DECLTYPE; 227} 228 229void ASTTypeWriter::VisitUnaryTransformType(const UnaryTransformType *T) { 230 Writer.AddTypeRef(T->getBaseType(), Record); 231 Writer.AddTypeRef(T->getUnderlyingType(), Record); 232 Record.push_back(T->getUTTKind()); 233 Code = TYPE_UNARY_TRANSFORM; 234} 235 236void ASTTypeWriter::VisitAutoType(const AutoType *T) { 237 Writer.AddTypeRef(T->getDeducedType(), Record); 238 Code = TYPE_AUTO; 239} 240 241void ASTTypeWriter::VisitTagType(const TagType *T) { 242 Record.push_back(T->isDependentType()); 243 Writer.AddDeclRef(T->getDecl(), Record); 244 assert(!T->isBeingDefined() && 245 "Cannot serialize in the middle of a type definition"); 246} 247 248void ASTTypeWriter::VisitRecordType(const RecordType *T) { 249 VisitTagType(T); 250 Code = TYPE_RECORD; 251} 252 253void ASTTypeWriter::VisitEnumType(const EnumType *T) { 254 VisitTagType(T); 255 Code = TYPE_ENUM; 256} 257 258void ASTTypeWriter::VisitAttributedType(const AttributedType *T) { 259 Writer.AddTypeRef(T->getModifiedType(), Record); 260 Writer.AddTypeRef(T->getEquivalentType(), Record); 261 Record.push_back(T->getAttrKind()); 262 Code = TYPE_ATTRIBUTED; 263} 264 265void 266ASTTypeWriter::VisitSubstTemplateTypeParmType( 267 const SubstTemplateTypeParmType *T) { 268 Writer.AddTypeRef(QualType(T->getReplacedParameter(), 0), Record); 269 Writer.AddTypeRef(T->getReplacementType(), Record); 270 Code = TYPE_SUBST_TEMPLATE_TYPE_PARM; 271} 272 273void 274ASTTypeWriter::VisitSubstTemplateTypeParmPackType( 275 const SubstTemplateTypeParmPackType *T) { 276 Writer.AddTypeRef(QualType(T->getReplacedParameter(), 0), Record); 277 Writer.AddTemplateArgument(T->getArgumentPack(), Record); 278 Code = TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK; 279} 280 281void 282ASTTypeWriter::VisitTemplateSpecializationType( 283 const TemplateSpecializationType *T) { 284 Record.push_back(T->isDependentType()); 285 Writer.AddTemplateName(T->getTemplateName(), Record); 286 Record.push_back(T->getNumArgs()); 287 for (TemplateSpecializationType::iterator ArgI = T->begin(), ArgE = T->end(); 288 ArgI != ArgE; ++ArgI) 289 Writer.AddTemplateArgument(*ArgI, Record); 290 Writer.AddTypeRef(T->isTypeAlias() ? T->getAliasedType() : 291 T->isCanonicalUnqualified() ? QualType() 292 : T->getCanonicalTypeInternal(), 293 Record); 294 Code = TYPE_TEMPLATE_SPECIALIZATION; 295} 296 297void 298ASTTypeWriter::VisitDependentSizedArrayType(const DependentSizedArrayType *T) { 299 VisitArrayType(T); 300 Writer.AddStmt(T->getSizeExpr()); 301 Writer.AddSourceRange(T->getBracketsRange(), Record); 302 Code = TYPE_DEPENDENT_SIZED_ARRAY; 303} 304 305void 306ASTTypeWriter::VisitDependentSizedExtVectorType( 307 const DependentSizedExtVectorType *T) { 308 // FIXME: Serialize this type (C++ only) 309 assert(false && "Cannot serialize dependent sized extended vector types"); 310} 311 312void 313ASTTypeWriter::VisitTemplateTypeParmType(const TemplateTypeParmType *T) { 314 Record.push_back(T->getDepth()); 315 Record.push_back(T->getIndex()); 316 Record.push_back(T->isParameterPack()); 317 Writer.AddDeclRef(T->getDecl(), Record); 318 Code = TYPE_TEMPLATE_TYPE_PARM; 319} 320 321void 322ASTTypeWriter::VisitDependentNameType(const DependentNameType *T) { 323 Record.push_back(T->getKeyword()); 324 Writer.AddNestedNameSpecifier(T->getQualifier(), Record); 325 Writer.AddIdentifierRef(T->getIdentifier(), Record); 326 Writer.AddTypeRef(T->isCanonicalUnqualified() ? QualType() 327 : T->getCanonicalTypeInternal(), 328 Record); 329 Code = TYPE_DEPENDENT_NAME; 330} 331 332void 333ASTTypeWriter::VisitDependentTemplateSpecializationType( 334 const DependentTemplateSpecializationType *T) { 335 Record.push_back(T->getKeyword()); 336 Writer.AddNestedNameSpecifier(T->getQualifier(), Record); 337 Writer.AddIdentifierRef(T->getIdentifier(), Record); 338 Record.push_back(T->getNumArgs()); 339 for (DependentTemplateSpecializationType::iterator 340 I = T->begin(), E = T->end(); I != E; ++I) 341 Writer.AddTemplateArgument(*I, Record); 342 Code = TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION; 343} 344 345void ASTTypeWriter::VisitPackExpansionType(const PackExpansionType *T) { 346 Writer.AddTypeRef(T->getPattern(), Record); 347 if (llvm::Optional<unsigned> NumExpansions = T->getNumExpansions()) 348 Record.push_back(*NumExpansions + 1); 349 else 350 Record.push_back(0); 351 Code = TYPE_PACK_EXPANSION; 352} 353 354void ASTTypeWriter::VisitParenType(const ParenType *T) { 355 Writer.AddTypeRef(T->getInnerType(), Record); 356 Code = TYPE_PAREN; 357} 358 359void ASTTypeWriter::VisitElaboratedType(const ElaboratedType *T) { 360 Record.push_back(T->getKeyword()); 361 Writer.AddNestedNameSpecifier(T->getQualifier(), Record); 362 Writer.AddTypeRef(T->getNamedType(), Record); 363 Code = TYPE_ELABORATED; 364} 365 366void ASTTypeWriter::VisitInjectedClassNameType(const InjectedClassNameType *T) { 367 Writer.AddDeclRef(T->getDecl(), Record); 368 Writer.AddTypeRef(T->getInjectedSpecializationType(), Record); 369 Code = TYPE_INJECTED_CLASS_NAME; 370} 371 372void ASTTypeWriter::VisitObjCInterfaceType(const ObjCInterfaceType *T) { 373 Writer.AddDeclRef(T->getDecl(), Record); 374 Code = TYPE_OBJC_INTERFACE; 375} 376 377void ASTTypeWriter::VisitObjCObjectType(const ObjCObjectType *T) { 378 Writer.AddTypeRef(T->getBaseType(), Record); 379 Record.push_back(T->getNumProtocols()); 380 for (ObjCObjectType::qual_iterator I = T->qual_begin(), 381 E = T->qual_end(); I != E; ++I) 382 Writer.AddDeclRef(*I, Record); 383 Code = TYPE_OBJC_OBJECT; 384} 385 386void 387ASTTypeWriter::VisitObjCObjectPointerType(const ObjCObjectPointerType *T) { 388 Writer.AddTypeRef(T->getPointeeType(), Record); 389 Code = TYPE_OBJC_OBJECT_POINTER; 390} 391 392namespace { 393 394class TypeLocWriter : public TypeLocVisitor<TypeLocWriter> { 395 ASTWriter &Writer; 396 ASTWriter::RecordDataImpl &Record; 397 398public: 399 TypeLocWriter(ASTWriter &Writer, ASTWriter::RecordDataImpl &Record) 400 : Writer(Writer), Record(Record) { } 401 402#define ABSTRACT_TYPELOC(CLASS, PARENT) 403#define TYPELOC(CLASS, PARENT) \ 404 void Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc); 405#include "clang/AST/TypeLocNodes.def" 406 407 void VisitArrayTypeLoc(ArrayTypeLoc TyLoc); 408 void VisitFunctionTypeLoc(FunctionTypeLoc TyLoc); 409}; 410 411} 412 413void TypeLocWriter::VisitQualifiedTypeLoc(QualifiedTypeLoc TL) { 414 // nothing to do 415} 416void TypeLocWriter::VisitBuiltinTypeLoc(BuiltinTypeLoc TL) { 417 Writer.AddSourceLocation(TL.getBuiltinLoc(), Record); 418 if (TL.needsExtraLocalData()) { 419 Record.push_back(TL.getWrittenTypeSpec()); 420 Record.push_back(TL.getWrittenSignSpec()); 421 Record.push_back(TL.getWrittenWidthSpec()); 422 Record.push_back(TL.hasModeAttr()); 423 } 424} 425void TypeLocWriter::VisitComplexTypeLoc(ComplexTypeLoc TL) { 426 Writer.AddSourceLocation(TL.getNameLoc(), Record); 427} 428void TypeLocWriter::VisitPointerTypeLoc(PointerTypeLoc TL) { 429 Writer.AddSourceLocation(TL.getStarLoc(), Record); 430} 431void TypeLocWriter::VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL) { 432 Writer.AddSourceLocation(TL.getCaretLoc(), Record); 433} 434void TypeLocWriter::VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL) { 435 Writer.AddSourceLocation(TL.getAmpLoc(), Record); 436} 437void TypeLocWriter::VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL) { 438 Writer.AddSourceLocation(TL.getAmpAmpLoc(), Record); 439} 440void TypeLocWriter::VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL) { 441 Writer.AddSourceLocation(TL.getStarLoc(), Record); 442 Writer.AddTypeSourceInfo(TL.getClassTInfo(), Record); 443} 444void TypeLocWriter::VisitArrayTypeLoc(ArrayTypeLoc TL) { 445 Writer.AddSourceLocation(TL.getLBracketLoc(), Record); 446 Writer.AddSourceLocation(TL.getRBracketLoc(), Record); 447 Record.push_back(TL.getSizeExpr() ? 1 : 0); 448 if (TL.getSizeExpr()) 449 Writer.AddStmt(TL.getSizeExpr()); 450} 451void TypeLocWriter::VisitConstantArrayTypeLoc(ConstantArrayTypeLoc TL) { 452 VisitArrayTypeLoc(TL); 453} 454void TypeLocWriter::VisitIncompleteArrayTypeLoc(IncompleteArrayTypeLoc TL) { 455 VisitArrayTypeLoc(TL); 456} 457void TypeLocWriter::VisitVariableArrayTypeLoc(VariableArrayTypeLoc TL) { 458 VisitArrayTypeLoc(TL); 459} 460void TypeLocWriter::VisitDependentSizedArrayTypeLoc( 461 DependentSizedArrayTypeLoc TL) { 462 VisitArrayTypeLoc(TL); 463} 464void TypeLocWriter::VisitDependentSizedExtVectorTypeLoc( 465 DependentSizedExtVectorTypeLoc TL) { 466 Writer.AddSourceLocation(TL.getNameLoc(), Record); 467} 468void TypeLocWriter::VisitVectorTypeLoc(VectorTypeLoc TL) { 469 Writer.AddSourceLocation(TL.getNameLoc(), Record); 470} 471void TypeLocWriter::VisitExtVectorTypeLoc(ExtVectorTypeLoc TL) { 472 Writer.AddSourceLocation(TL.getNameLoc(), Record); 473} 474void TypeLocWriter::VisitFunctionTypeLoc(FunctionTypeLoc TL) { 475 Writer.AddSourceLocation(TL.getLocalRangeBegin(), Record); 476 Writer.AddSourceLocation(TL.getLocalRangeEnd(), Record); 477 Record.push_back(TL.getTrailingReturn()); 478 for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i) 479 Writer.AddDeclRef(TL.getArg(i), Record); 480} 481void TypeLocWriter::VisitFunctionProtoTypeLoc(FunctionProtoTypeLoc TL) { 482 VisitFunctionTypeLoc(TL); 483} 484void TypeLocWriter::VisitFunctionNoProtoTypeLoc(FunctionNoProtoTypeLoc TL) { 485 VisitFunctionTypeLoc(TL); 486} 487void TypeLocWriter::VisitUnresolvedUsingTypeLoc(UnresolvedUsingTypeLoc TL) { 488 Writer.AddSourceLocation(TL.getNameLoc(), Record); 489} 490void TypeLocWriter::VisitTypedefTypeLoc(TypedefTypeLoc TL) { 491 Writer.AddSourceLocation(TL.getNameLoc(), Record); 492} 493void TypeLocWriter::VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL) { 494 Writer.AddSourceLocation(TL.getTypeofLoc(), Record); 495 Writer.AddSourceLocation(TL.getLParenLoc(), Record); 496 Writer.AddSourceLocation(TL.getRParenLoc(), Record); 497} 498void TypeLocWriter::VisitTypeOfTypeLoc(TypeOfTypeLoc TL) { 499 Writer.AddSourceLocation(TL.getTypeofLoc(), Record); 500 Writer.AddSourceLocation(TL.getLParenLoc(), Record); 501 Writer.AddSourceLocation(TL.getRParenLoc(), Record); 502 Writer.AddTypeSourceInfo(TL.getUnderlyingTInfo(), Record); 503} 504void TypeLocWriter::VisitDecltypeTypeLoc(DecltypeTypeLoc TL) { 505 Writer.AddSourceLocation(TL.getNameLoc(), Record); 506} 507void TypeLocWriter::VisitUnaryTransformTypeLoc(UnaryTransformTypeLoc TL) { 508 Writer.AddSourceLocation(TL.getKWLoc(), Record); 509 Writer.AddSourceLocation(TL.getLParenLoc(), Record); 510 Writer.AddSourceLocation(TL.getRParenLoc(), Record); 511 Writer.AddTypeSourceInfo(TL.getUnderlyingTInfo(), Record); 512} 513void TypeLocWriter::VisitAutoTypeLoc(AutoTypeLoc TL) { 514 Writer.AddSourceLocation(TL.getNameLoc(), Record); 515} 516void TypeLocWriter::VisitRecordTypeLoc(RecordTypeLoc TL) { 517 Writer.AddSourceLocation(TL.getNameLoc(), Record); 518} 519void TypeLocWriter::VisitEnumTypeLoc(EnumTypeLoc TL) { 520 Writer.AddSourceLocation(TL.getNameLoc(), Record); 521} 522void TypeLocWriter::VisitAttributedTypeLoc(AttributedTypeLoc TL) { 523 Writer.AddSourceLocation(TL.getAttrNameLoc(), Record); 524 if (TL.hasAttrOperand()) { 525 SourceRange range = TL.getAttrOperandParensRange(); 526 Writer.AddSourceLocation(range.getBegin(), Record); 527 Writer.AddSourceLocation(range.getEnd(), Record); 528 } 529 if (TL.hasAttrExprOperand()) { 530 Expr *operand = TL.getAttrExprOperand(); 531 Record.push_back(operand ? 1 : 0); 532 if (operand) Writer.AddStmt(operand); 533 } else if (TL.hasAttrEnumOperand()) { 534 Writer.AddSourceLocation(TL.getAttrEnumOperandLoc(), Record); 535 } 536} 537void TypeLocWriter::VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL) { 538 Writer.AddSourceLocation(TL.getNameLoc(), Record); 539} 540void TypeLocWriter::VisitSubstTemplateTypeParmTypeLoc( 541 SubstTemplateTypeParmTypeLoc TL) { 542 Writer.AddSourceLocation(TL.getNameLoc(), Record); 543} 544void TypeLocWriter::VisitSubstTemplateTypeParmPackTypeLoc( 545 SubstTemplateTypeParmPackTypeLoc TL) { 546 Writer.AddSourceLocation(TL.getNameLoc(), Record); 547} 548void TypeLocWriter::VisitTemplateSpecializationTypeLoc( 549 TemplateSpecializationTypeLoc TL) { 550 Writer.AddSourceLocation(TL.getTemplateNameLoc(), Record); 551 Writer.AddSourceLocation(TL.getLAngleLoc(), Record); 552 Writer.AddSourceLocation(TL.getRAngleLoc(), Record); 553 for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i) 554 Writer.AddTemplateArgumentLocInfo(TL.getArgLoc(i).getArgument().getKind(), 555 TL.getArgLoc(i).getLocInfo(), Record); 556} 557void TypeLocWriter::VisitParenTypeLoc(ParenTypeLoc TL) { 558 Writer.AddSourceLocation(TL.getLParenLoc(), Record); 559 Writer.AddSourceLocation(TL.getRParenLoc(), Record); 560} 561void TypeLocWriter::VisitElaboratedTypeLoc(ElaboratedTypeLoc TL) { 562 Writer.AddSourceLocation(TL.getKeywordLoc(), Record); 563 Writer.AddNestedNameSpecifierLoc(TL.getQualifierLoc(), Record); 564} 565void TypeLocWriter::VisitInjectedClassNameTypeLoc(InjectedClassNameTypeLoc TL) { 566 Writer.AddSourceLocation(TL.getNameLoc(), Record); 567} 568void TypeLocWriter::VisitDependentNameTypeLoc(DependentNameTypeLoc TL) { 569 Writer.AddSourceLocation(TL.getKeywordLoc(), Record); 570 Writer.AddNestedNameSpecifierLoc(TL.getQualifierLoc(), Record); 571 Writer.AddSourceLocation(TL.getNameLoc(), Record); 572} 573void TypeLocWriter::VisitDependentTemplateSpecializationTypeLoc( 574 DependentTemplateSpecializationTypeLoc TL) { 575 Writer.AddSourceLocation(TL.getKeywordLoc(), Record); 576 Writer.AddNestedNameSpecifierLoc(TL.getQualifierLoc(), Record); 577 Writer.AddSourceLocation(TL.getNameLoc(), Record); 578 Writer.AddSourceLocation(TL.getLAngleLoc(), Record); 579 Writer.AddSourceLocation(TL.getRAngleLoc(), Record); 580 for (unsigned I = 0, E = TL.getNumArgs(); I != E; ++I) 581 Writer.AddTemplateArgumentLocInfo(TL.getArgLoc(I).getArgument().getKind(), 582 TL.getArgLoc(I).getLocInfo(), Record); 583} 584void TypeLocWriter::VisitPackExpansionTypeLoc(PackExpansionTypeLoc TL) { 585 Writer.AddSourceLocation(TL.getEllipsisLoc(), Record); 586} 587void TypeLocWriter::VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) { 588 Writer.AddSourceLocation(TL.getNameLoc(), Record); 589} 590void TypeLocWriter::VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) { 591 Record.push_back(TL.hasBaseTypeAsWritten()); 592 Writer.AddSourceLocation(TL.getLAngleLoc(), Record); 593 Writer.AddSourceLocation(TL.getRAngleLoc(), Record); 594 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i) 595 Writer.AddSourceLocation(TL.getProtocolLoc(i), Record); 596} 597void TypeLocWriter::VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) { 598 Writer.AddSourceLocation(TL.getStarLoc(), Record); 599} 600 601//===----------------------------------------------------------------------===// 602// ASTWriter Implementation 603//===----------------------------------------------------------------------===// 604 605static void EmitBlockID(unsigned ID, const char *Name, 606 llvm::BitstreamWriter &Stream, 607 ASTWriter::RecordDataImpl &Record) { 608 Record.clear(); 609 Record.push_back(ID); 610 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETBID, Record); 611 612 // Emit the block name if present. 613 if (Name == 0 || Name[0] == 0) return; 614 Record.clear(); 615 while (*Name) 616 Record.push_back(*Name++); 617 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_BLOCKNAME, Record); 618} 619 620static void EmitRecordID(unsigned ID, const char *Name, 621 llvm::BitstreamWriter &Stream, 622 ASTWriter::RecordDataImpl &Record) { 623 Record.clear(); 624 Record.push_back(ID); 625 while (*Name) 626 Record.push_back(*Name++); 627 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETRECORDNAME, Record); 628} 629 630static void AddStmtsExprs(llvm::BitstreamWriter &Stream, 631 ASTWriter::RecordDataImpl &Record) { 632#define RECORD(X) EmitRecordID(X, #X, Stream, Record) 633 RECORD(STMT_STOP); 634 RECORD(STMT_NULL_PTR); 635 RECORD(STMT_NULL); 636 RECORD(STMT_COMPOUND); 637 RECORD(STMT_CASE); 638 RECORD(STMT_DEFAULT); 639 RECORD(STMT_LABEL); 640 RECORD(STMT_IF); 641 RECORD(STMT_SWITCH); 642 RECORD(STMT_WHILE); 643 RECORD(STMT_DO); 644 RECORD(STMT_FOR); 645 RECORD(STMT_GOTO); 646 RECORD(STMT_INDIRECT_GOTO); 647 RECORD(STMT_CONTINUE); 648 RECORD(STMT_BREAK); 649 RECORD(STMT_RETURN); 650 RECORD(STMT_DECL); 651 RECORD(STMT_ASM); 652 RECORD(EXPR_PREDEFINED); 653 RECORD(EXPR_DECL_REF); 654 RECORD(EXPR_INTEGER_LITERAL); 655 RECORD(EXPR_FLOATING_LITERAL); 656 RECORD(EXPR_IMAGINARY_LITERAL); 657 RECORD(EXPR_STRING_LITERAL); 658 RECORD(EXPR_CHARACTER_LITERAL); 659 RECORD(EXPR_PAREN); 660 RECORD(EXPR_UNARY_OPERATOR); 661 RECORD(EXPR_SIZEOF_ALIGN_OF); 662 RECORD(EXPR_ARRAY_SUBSCRIPT); 663 RECORD(EXPR_CALL); 664 RECORD(EXPR_MEMBER); 665 RECORD(EXPR_BINARY_OPERATOR); 666 RECORD(EXPR_COMPOUND_ASSIGN_OPERATOR); 667 RECORD(EXPR_CONDITIONAL_OPERATOR); 668 RECORD(EXPR_IMPLICIT_CAST); 669 RECORD(EXPR_CSTYLE_CAST); 670 RECORD(EXPR_COMPOUND_LITERAL); 671 RECORD(EXPR_EXT_VECTOR_ELEMENT); 672 RECORD(EXPR_INIT_LIST); 673 RECORD(EXPR_DESIGNATED_INIT); 674 RECORD(EXPR_IMPLICIT_VALUE_INIT); 675 RECORD(EXPR_VA_ARG); 676 RECORD(EXPR_ADDR_LABEL); 677 RECORD(EXPR_STMT); 678 RECORD(EXPR_CHOOSE); 679 RECORD(EXPR_GNU_NULL); 680 RECORD(EXPR_SHUFFLE_VECTOR); 681 RECORD(EXPR_BLOCK); 682 RECORD(EXPR_BLOCK_DECL_REF); 683 RECORD(EXPR_GENERIC_SELECTION); 684 RECORD(EXPR_OBJC_STRING_LITERAL); 685 RECORD(EXPR_OBJC_ENCODE); 686 RECORD(EXPR_OBJC_SELECTOR_EXPR); 687 RECORD(EXPR_OBJC_PROTOCOL_EXPR); 688 RECORD(EXPR_OBJC_IVAR_REF_EXPR); 689 RECORD(EXPR_OBJC_PROPERTY_REF_EXPR); 690 RECORD(EXPR_OBJC_KVC_REF_EXPR); 691 RECORD(EXPR_OBJC_MESSAGE_EXPR); 692 RECORD(STMT_OBJC_FOR_COLLECTION); 693 RECORD(STMT_OBJC_CATCH); 694 RECORD(STMT_OBJC_FINALLY); 695 RECORD(STMT_OBJC_AT_TRY); 696 RECORD(STMT_OBJC_AT_SYNCHRONIZED); 697 RECORD(STMT_OBJC_AT_THROW); 698 RECORD(EXPR_CXX_OPERATOR_CALL); 699 RECORD(EXPR_CXX_CONSTRUCT); 700 RECORD(EXPR_CXX_STATIC_CAST); 701 RECORD(EXPR_CXX_DYNAMIC_CAST); 702 RECORD(EXPR_CXX_REINTERPRET_CAST); 703 RECORD(EXPR_CXX_CONST_CAST); 704 RECORD(EXPR_CXX_FUNCTIONAL_CAST); 705 RECORD(EXPR_CXX_BOOL_LITERAL); 706 RECORD(EXPR_CXX_NULL_PTR_LITERAL); 707 RECORD(EXPR_CXX_TYPEID_EXPR); 708 RECORD(EXPR_CXX_TYPEID_TYPE); 709 RECORD(EXPR_CXX_UUIDOF_EXPR); 710 RECORD(EXPR_CXX_UUIDOF_TYPE); 711 RECORD(EXPR_CXX_THIS); 712 RECORD(EXPR_CXX_THROW); 713 RECORD(EXPR_CXX_DEFAULT_ARG); 714 RECORD(EXPR_CXX_BIND_TEMPORARY); 715 RECORD(EXPR_CXX_SCALAR_VALUE_INIT); 716 RECORD(EXPR_CXX_NEW); 717 RECORD(EXPR_CXX_DELETE); 718 RECORD(EXPR_CXX_PSEUDO_DESTRUCTOR); 719 RECORD(EXPR_EXPR_WITH_CLEANUPS); 720 RECORD(EXPR_CXX_DEPENDENT_SCOPE_MEMBER); 721 RECORD(EXPR_CXX_DEPENDENT_SCOPE_DECL_REF); 722 RECORD(EXPR_CXX_UNRESOLVED_CONSTRUCT); 723 RECORD(EXPR_CXX_UNRESOLVED_MEMBER); 724 RECORD(EXPR_CXX_UNRESOLVED_LOOKUP); 725 RECORD(EXPR_CXX_UNARY_TYPE_TRAIT); 726 RECORD(EXPR_CXX_NOEXCEPT); 727 RECORD(EXPR_OPAQUE_VALUE); 728 RECORD(EXPR_BINARY_TYPE_TRAIT); 729 RECORD(EXPR_PACK_EXPANSION); 730 RECORD(EXPR_SIZEOF_PACK); 731 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK); 732 RECORD(EXPR_CUDA_KERNEL_CALL); 733#undef RECORD 734} 735 736void ASTWriter::WriteBlockInfoBlock() { 737 RecordData Record; 738 Stream.EnterSubblock(llvm::bitc::BLOCKINFO_BLOCK_ID, 3); 739 740#define BLOCK(X) EmitBlockID(X ## _ID, #X, Stream, Record) 741#define RECORD(X) EmitRecordID(X, #X, Stream, Record) 742 743 // AST Top-Level Block. 744 BLOCK(AST_BLOCK); 745 RECORD(ORIGINAL_FILE_NAME); 746 RECORD(ORIGINAL_FILE_ID); 747 RECORD(TYPE_OFFSET); 748 RECORD(DECL_OFFSET); 749 RECORD(LANGUAGE_OPTIONS); 750 RECORD(METADATA); 751 RECORD(IDENTIFIER_OFFSET); 752 RECORD(IDENTIFIER_TABLE); 753 RECORD(EXTERNAL_DEFINITIONS); 754 RECORD(SPECIAL_TYPES); 755 RECORD(STATISTICS); 756 RECORD(TENTATIVE_DEFINITIONS); 757 RECORD(UNUSED_FILESCOPED_DECLS); 758 RECORD(LOCALLY_SCOPED_EXTERNAL_DECLS); 759 RECORD(SELECTOR_OFFSETS); 760 RECORD(METHOD_POOL); 761 RECORD(PP_COUNTER_VALUE); 762 RECORD(SOURCE_LOCATION_OFFSETS); 763 RECORD(SOURCE_LOCATION_PRELOADS); 764 RECORD(STAT_CACHE); 765 RECORD(EXT_VECTOR_DECLS); 766 RECORD(VERSION_CONTROL_BRANCH_REVISION); 767 RECORD(MACRO_DEFINITION_OFFSETS); 768 RECORD(CHAINED_METADATA); 769 RECORD(REFERENCED_SELECTOR_POOL); 770 RECORD(TU_UPDATE_LEXICAL); 771 RECORD(REDECLS_UPDATE_LATEST); 772 RECORD(SEMA_DECL_REFS); 773 RECORD(WEAK_UNDECLARED_IDENTIFIERS); 774 RECORD(PENDING_IMPLICIT_INSTANTIATIONS); 775 RECORD(DECL_REPLACEMENTS); 776 RECORD(UPDATE_VISIBLE); 777 RECORD(DECL_UPDATE_OFFSETS); 778 RECORD(DECL_UPDATES); 779 RECORD(CXX_BASE_SPECIFIER_OFFSETS); 780 RECORD(DIAG_PRAGMA_MAPPINGS); 781 RECORD(CUDA_SPECIAL_DECL_REFS); 782 RECORD(HEADER_SEARCH_TABLE); 783 RECORD(FP_PRAGMA_OPTIONS); 784 RECORD(OPENCL_EXTENSIONS); 785 RECORD(DELEGATING_CTORS); 786 RECORD(FILE_SOURCE_LOCATION_OFFSETS); 787 RECORD(KNOWN_NAMESPACES); 788 789 // SourceManager Block. 790 BLOCK(SOURCE_MANAGER_BLOCK); 791 RECORD(SM_SLOC_FILE_ENTRY); 792 RECORD(SM_SLOC_BUFFER_ENTRY); 793 RECORD(SM_SLOC_BUFFER_BLOB); 794 RECORD(SM_SLOC_EXPANSION_ENTRY); 795 796 // Preprocessor Block. 797 BLOCK(PREPROCESSOR_BLOCK); 798 RECORD(PP_MACRO_OBJECT_LIKE); 799 RECORD(PP_MACRO_FUNCTION_LIKE); 800 RECORD(PP_TOKEN); 801 802 // Decls and Types block. 803 BLOCK(DECLTYPES_BLOCK); 804 RECORD(TYPE_EXT_QUAL); 805 RECORD(TYPE_COMPLEX); 806 RECORD(TYPE_POINTER); 807 RECORD(TYPE_BLOCK_POINTER); 808 RECORD(TYPE_LVALUE_REFERENCE); 809 RECORD(TYPE_RVALUE_REFERENCE); 810 RECORD(TYPE_MEMBER_POINTER); 811 RECORD(TYPE_CONSTANT_ARRAY); 812 RECORD(TYPE_INCOMPLETE_ARRAY); 813 RECORD(TYPE_VARIABLE_ARRAY); 814 RECORD(TYPE_VECTOR); 815 RECORD(TYPE_EXT_VECTOR); 816 RECORD(TYPE_FUNCTION_PROTO); 817 RECORD(TYPE_FUNCTION_NO_PROTO); 818 RECORD(TYPE_TYPEDEF); 819 RECORD(TYPE_TYPEOF_EXPR); 820 RECORD(TYPE_TYPEOF); 821 RECORD(TYPE_RECORD); 822 RECORD(TYPE_ENUM); 823 RECORD(TYPE_OBJC_INTERFACE); 824 RECORD(TYPE_OBJC_OBJECT); 825 RECORD(TYPE_OBJC_OBJECT_POINTER); 826 RECORD(TYPE_DECLTYPE); 827 RECORD(TYPE_ELABORATED); 828 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM); 829 RECORD(TYPE_UNRESOLVED_USING); 830 RECORD(TYPE_INJECTED_CLASS_NAME); 831 RECORD(TYPE_OBJC_OBJECT); 832 RECORD(TYPE_TEMPLATE_TYPE_PARM); 833 RECORD(TYPE_TEMPLATE_SPECIALIZATION); 834 RECORD(TYPE_DEPENDENT_NAME); 835 RECORD(TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION); 836 RECORD(TYPE_DEPENDENT_SIZED_ARRAY); 837 RECORD(TYPE_PAREN); 838 RECORD(TYPE_PACK_EXPANSION); 839 RECORD(TYPE_ATTRIBUTED); 840 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK); 841 RECORD(DECL_TRANSLATION_UNIT); 842 RECORD(DECL_TYPEDEF); 843 RECORD(DECL_ENUM); 844 RECORD(DECL_RECORD); 845 RECORD(DECL_ENUM_CONSTANT); 846 RECORD(DECL_FUNCTION); 847 RECORD(DECL_OBJC_METHOD); 848 RECORD(DECL_OBJC_INTERFACE); 849 RECORD(DECL_OBJC_PROTOCOL); 850 RECORD(DECL_OBJC_IVAR); 851 RECORD(DECL_OBJC_AT_DEFS_FIELD); 852 RECORD(DECL_OBJC_CLASS); 853 RECORD(DECL_OBJC_FORWARD_PROTOCOL); 854 RECORD(DECL_OBJC_CATEGORY); 855 RECORD(DECL_OBJC_CATEGORY_IMPL); 856 RECORD(DECL_OBJC_IMPLEMENTATION); 857 RECORD(DECL_OBJC_COMPATIBLE_ALIAS); 858 RECORD(DECL_OBJC_PROPERTY); 859 RECORD(DECL_OBJC_PROPERTY_IMPL); 860 RECORD(DECL_FIELD); 861 RECORD(DECL_VAR); 862 RECORD(DECL_IMPLICIT_PARAM); 863 RECORD(DECL_PARM_VAR); 864 RECORD(DECL_FILE_SCOPE_ASM); 865 RECORD(DECL_BLOCK); 866 RECORD(DECL_CONTEXT_LEXICAL); 867 RECORD(DECL_CONTEXT_VISIBLE); 868 RECORD(DECL_NAMESPACE); 869 RECORD(DECL_NAMESPACE_ALIAS); 870 RECORD(DECL_USING); 871 RECORD(DECL_USING_SHADOW); 872 RECORD(DECL_USING_DIRECTIVE); 873 RECORD(DECL_UNRESOLVED_USING_VALUE); 874 RECORD(DECL_UNRESOLVED_USING_TYPENAME); 875 RECORD(DECL_LINKAGE_SPEC); 876 RECORD(DECL_CXX_RECORD); 877 RECORD(DECL_CXX_METHOD); 878 RECORD(DECL_CXX_CONSTRUCTOR); 879 RECORD(DECL_CXX_DESTRUCTOR); 880 RECORD(DECL_CXX_CONVERSION); 881 RECORD(DECL_ACCESS_SPEC); 882 RECORD(DECL_FRIEND); 883 RECORD(DECL_FRIEND_TEMPLATE); 884 RECORD(DECL_CLASS_TEMPLATE); 885 RECORD(DECL_CLASS_TEMPLATE_SPECIALIZATION); 886 RECORD(DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION); 887 RECORD(DECL_FUNCTION_TEMPLATE); 888 RECORD(DECL_TEMPLATE_TYPE_PARM); 889 RECORD(DECL_NON_TYPE_TEMPLATE_PARM); 890 RECORD(DECL_TEMPLATE_TEMPLATE_PARM); 891 RECORD(DECL_STATIC_ASSERT); 892 RECORD(DECL_CXX_BASE_SPECIFIERS); 893 RECORD(DECL_INDIRECTFIELD); 894 RECORD(DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK); 895 896 // Statements and Exprs can occur in the Decls and Types block. 897 AddStmtsExprs(Stream, Record); 898 899 BLOCK(PREPROCESSOR_DETAIL_BLOCK); 900 RECORD(PPD_MACRO_EXPANSION); 901 RECORD(PPD_MACRO_DEFINITION); 902 RECORD(PPD_INCLUSION_DIRECTIVE); 903 904#undef RECORD 905#undef BLOCK 906 Stream.ExitBlock(); 907} 908 909/// \brief Adjusts the given filename to only write out the portion of the 910/// filename that is not part of the system root directory. 911/// 912/// \param Filename the file name to adjust. 913/// 914/// \param isysroot When non-NULL, the PCH file is a relocatable PCH file and 915/// the returned filename will be adjusted by this system root. 916/// 917/// \returns either the original filename (if it needs no adjustment) or the 918/// adjusted filename (which points into the @p Filename parameter). 919static const char * 920adjustFilenameForRelocatablePCH(const char *Filename, StringRef isysroot) { 921 assert(Filename && "No file name to adjust?"); 922 923 if (isysroot.empty()) 924 return Filename; 925 926 // Verify that the filename and the system root have the same prefix. 927 unsigned Pos = 0; 928 for (; Filename[Pos] && Pos < isysroot.size(); ++Pos) 929 if (Filename[Pos] != isysroot[Pos]) 930 return Filename; // Prefixes don't match. 931 932 // We hit the end of the filename before we hit the end of the system root. 933 if (!Filename[Pos]) 934 return Filename; 935 936 // If the file name has a '/' at the current position, skip over the '/'. 937 // We distinguish sysroot-based includes from absolute includes by the 938 // absence of '/' at the beginning of sysroot-based includes. 939 if (Filename[Pos] == '/') 940 ++Pos; 941 942 return Filename + Pos; 943} 944 945/// \brief Write the AST metadata (e.g., i686-apple-darwin9). 946void ASTWriter::WriteMetadata(ASTContext &Context, StringRef isysroot, 947 const std::string &OutputFile) { 948 using namespace llvm; 949 950 // Metadata 951 const TargetInfo &Target = Context.Target; 952 BitCodeAbbrev *MetaAbbrev = new BitCodeAbbrev(); 953 MetaAbbrev->Add(BitCodeAbbrevOp( 954 Chain ? CHAINED_METADATA : METADATA)); 955 MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // AST major 956 MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // AST minor 957 MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang major 958 MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang minor 959 MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Relocatable 960 // Target triple or chained PCH name 961 MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 962 unsigned MetaAbbrevCode = Stream.EmitAbbrev(MetaAbbrev); 963 964 RecordData Record; 965 Record.push_back(Chain ? CHAINED_METADATA : METADATA); 966 Record.push_back(VERSION_MAJOR); 967 Record.push_back(VERSION_MINOR); 968 Record.push_back(CLANG_VERSION_MAJOR); 969 Record.push_back(CLANG_VERSION_MINOR); 970 Record.push_back(!isysroot.empty()); 971 // FIXME: This writes the absolute path for chained headers. 972 const std::string &BlobStr = 973 Chain ? Chain->getFileName() : Target.getTriple().getTriple(); 974 Stream.EmitRecordWithBlob(MetaAbbrevCode, Record, BlobStr); 975 976 // Original file name and file ID 977 SourceManager &SM = Context.getSourceManager(); 978 if (const FileEntry *MainFile = SM.getFileEntryForID(SM.getMainFileID())) { 979 BitCodeAbbrev *FileAbbrev = new BitCodeAbbrev(); 980 FileAbbrev->Add(BitCodeAbbrevOp(ORIGINAL_FILE_NAME)); 981 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name 982 unsigned FileAbbrevCode = Stream.EmitAbbrev(FileAbbrev); 983 984 llvm::SmallString<128> MainFilePath(MainFile->getName()); 985 986 llvm::sys::fs::make_absolute(MainFilePath); 987 988 const char *MainFileNameStr = MainFilePath.c_str(); 989 MainFileNameStr = adjustFilenameForRelocatablePCH(MainFileNameStr, 990 isysroot); 991 RecordData Record; 992 Record.push_back(ORIGINAL_FILE_NAME); 993 Stream.EmitRecordWithBlob(FileAbbrevCode, Record, MainFileNameStr); 994 995 Record.clear(); 996 Record.push_back(SM.getMainFileID().getOpaqueValue()); 997 Stream.EmitRecord(ORIGINAL_FILE_ID, Record); 998 } 999 1000 // Original PCH directory 1001 if (!OutputFile.empty() && OutputFile != "-") { 1002 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1003 Abbrev->Add(BitCodeAbbrevOp(ORIGINAL_PCH_DIR)); 1004 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name 1005 unsigned AbbrevCode = Stream.EmitAbbrev(Abbrev); 1006 1007 llvm::SmallString<128> OutputPath(OutputFile); 1008 1009 llvm::sys::fs::make_absolute(OutputPath); 1010 StringRef origDir = llvm::sys::path::parent_path(OutputPath); 1011 1012 RecordData Record; 1013 Record.push_back(ORIGINAL_PCH_DIR); 1014 Stream.EmitRecordWithBlob(AbbrevCode, Record, origDir); 1015 } 1016 1017 // Repository branch/version information. 1018 BitCodeAbbrev *RepoAbbrev = new BitCodeAbbrev(); 1019 RepoAbbrev->Add(BitCodeAbbrevOp(VERSION_CONTROL_BRANCH_REVISION)); 1020 RepoAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // SVN branch/tag 1021 unsigned RepoAbbrevCode = Stream.EmitAbbrev(RepoAbbrev); 1022 Record.clear(); 1023 Record.push_back(VERSION_CONTROL_BRANCH_REVISION); 1024 Stream.EmitRecordWithBlob(RepoAbbrevCode, Record, 1025 getClangFullRepositoryVersion()); 1026} 1027 1028/// \brief Write the LangOptions structure. 1029void ASTWriter::WriteLanguageOptions(const LangOptions &LangOpts) { 1030 RecordData Record; 1031 Record.push_back(LangOpts.Trigraphs); 1032 Record.push_back(LangOpts.BCPLComment); // BCPL-style '//' comments. 1033 Record.push_back(LangOpts.DollarIdents); // '$' allowed in identifiers. 1034 Record.push_back(LangOpts.AsmPreprocessor); // Preprocessor in asm mode. 1035 Record.push_back(LangOpts.GNUMode); // True in gnu99 mode false in c99 mode (etc) 1036 Record.push_back(LangOpts.GNUKeywords); // Allow GNU-extension keywords 1037 Record.push_back(LangOpts.ImplicitInt); // C89 implicit 'int'. 1038 Record.push_back(LangOpts.Digraphs); // C94, C99 and C++ 1039 Record.push_back(LangOpts.HexFloats); // C99 Hexadecimal float constants. 1040 Record.push_back(LangOpts.C99); // C99 Support 1041 Record.push_back(LangOpts.C1X); // C1X Support 1042 Record.push_back(LangOpts.Microsoft); // Microsoft extensions. 1043 // LangOpts.MSCVersion is ignored because all it does it set a macro, which is 1044 // already saved elsewhere. 1045 Record.push_back(LangOpts.CPlusPlus); // C++ Support 1046 Record.push_back(LangOpts.CPlusPlus0x); // C++0x Support 1047 Record.push_back(LangOpts.CXXOperatorNames); // Treat C++ operator names as keywords. 1048 1049 Record.push_back(LangOpts.ObjC1); // Objective-C 1 support enabled. 1050 Record.push_back(LangOpts.ObjC2); // Objective-C 2 support enabled. 1051 Record.push_back(LangOpts.ObjCNonFragileABI); // Objective-C 1052 // modern abi enabled. 1053 Record.push_back(LangOpts.ObjCNonFragileABI2); // Objective-C enhanced 1054 // modern abi enabled. 1055 Record.push_back(LangOpts.AppleKext); // Apple's kernel extensions ABI 1056 Record.push_back(LangOpts.ObjCDefaultSynthProperties); // Objective-C auto-synthesized 1057 // properties enabled. 1058 Record.push_back(LangOpts.ObjCInferRelatedResultType); 1059 Record.push_back(LangOpts.NoConstantCFStrings); // non cfstring generation enabled.. 1060 1061 Record.push_back(LangOpts.PascalStrings); // Allow Pascal strings 1062 Record.push_back(LangOpts.WritableStrings); // Allow writable strings 1063 Record.push_back(LangOpts.LaxVectorConversions); 1064 Record.push_back(LangOpts.AltiVec); 1065 Record.push_back(LangOpts.Exceptions); // Support exception handling. 1066 Record.push_back(LangOpts.ObjCExceptions); 1067 Record.push_back(LangOpts.CXXExceptions); 1068 Record.push_back(LangOpts.SjLjExceptions); 1069 1070 Record.push_back(LangOpts.MSBitfields); // MS-compatible structure layout 1071 Record.push_back(LangOpts.NeXTRuntime); // Use NeXT runtime. 1072 Record.push_back(LangOpts.Freestanding); // Freestanding implementation 1073 Record.push_back(LangOpts.NoBuiltin); // Do not use builtin functions (-fno-builtin) 1074 1075 // Whether static initializers are protected by locks. 1076 Record.push_back(LangOpts.ThreadsafeStatics); 1077 Record.push_back(LangOpts.POSIXThreads); 1078 Record.push_back(LangOpts.Blocks); // block extension to C 1079 Record.push_back(LangOpts.EmitAllDecls); // Emit all declarations, even if 1080 // they are unused. 1081 Record.push_back(LangOpts.MathErrno); // Math functions must respect errno 1082 // (modulo the platform support). 1083 1084 Record.push_back(LangOpts.getSignedOverflowBehavior()); 1085 Record.push_back(LangOpts.HeinousExtensions); 1086 1087 Record.push_back(LangOpts.Optimize); // Whether __OPTIMIZE__ should be defined. 1088 Record.push_back(LangOpts.OptimizeSize); // Whether __OPTIMIZE_SIZE__ should be 1089 // defined. 1090 Record.push_back(LangOpts.Static); // Should __STATIC__ be defined (as 1091 // opposed to __DYNAMIC__). 1092 Record.push_back(LangOpts.PICLevel); // The value for __PIC__, if non-zero. 1093 1094 Record.push_back(LangOpts.GNUInline); // Should GNU inline semantics be 1095 // used (instead of C99 semantics). 1096 Record.push_back(LangOpts.NoInline); // Should __NO_INLINE__ be defined. 1097 Record.push_back(LangOpts.Deprecated); // Should __DEPRECATED be defined. 1098 Record.push_back(LangOpts.AccessControl); // Whether C++ access control should 1099 // be enabled. 1100 Record.push_back(LangOpts.CharIsSigned); // Whether char is a signed or 1101 // unsigned type 1102 Record.push_back(LangOpts.ShortWChar); // force wchar_t to be unsigned short 1103 Record.push_back(LangOpts.ShortEnums); // Should the enum type be equivalent 1104 // to the smallest integer type with 1105 // enough room. 1106 Record.push_back(LangOpts.getGCMode()); 1107 Record.push_back(LangOpts.getVisibilityMode()); 1108 Record.push_back(LangOpts.getStackProtectorMode()); 1109 Record.push_back(LangOpts.InstantiationDepth); 1110 Record.push_back(LangOpts.OpenCL); 1111 Record.push_back(LangOpts.CUDA); 1112 Record.push_back(LangOpts.CatchUndefined); 1113 Record.push_back(LangOpts.DefaultFPContract); 1114 Record.push_back(LangOpts.ElideConstructors); 1115 Record.push_back(LangOpts.SpellChecking); 1116 Record.push_back(LangOpts.MRTD); 1117 Record.push_back(LangOpts.ObjCAutoRefCount); 1118 Record.push_back(LangOpts.ObjCInferRelatedReturnType); 1119 Stream.EmitRecord(LANGUAGE_OPTIONS, Record); 1120} 1121 1122//===----------------------------------------------------------------------===// 1123// stat cache Serialization 1124//===----------------------------------------------------------------------===// 1125 1126namespace { 1127// Trait used for the on-disk hash table of stat cache results. 1128class ASTStatCacheTrait { 1129public: 1130 typedef const char * key_type; 1131 typedef key_type key_type_ref; 1132 1133 typedef struct stat data_type; 1134 typedef const data_type &data_type_ref; 1135 1136 static unsigned ComputeHash(const char *path) { 1137 return llvm::HashString(path); 1138 } 1139 1140 std::pair<unsigned,unsigned> 1141 EmitKeyDataLength(raw_ostream& Out, const char *path, 1142 data_type_ref Data) { 1143 unsigned StrLen = strlen(path); 1144 clang::io::Emit16(Out, StrLen); 1145 unsigned DataLen = 4 + 4 + 2 + 8 + 8; 1146 clang::io::Emit8(Out, DataLen); 1147 return std::make_pair(StrLen + 1, DataLen); 1148 } 1149 1150 void EmitKey(raw_ostream& Out, const char *path, unsigned KeyLen) { 1151 Out.write(path, KeyLen); 1152 } 1153 1154 void EmitData(raw_ostream &Out, key_type_ref, 1155 data_type_ref Data, unsigned DataLen) { 1156 using namespace clang::io; 1157 uint64_t Start = Out.tell(); (void)Start; 1158 1159 Emit32(Out, (uint32_t) Data.st_ino); 1160 Emit32(Out, (uint32_t) Data.st_dev); 1161 Emit16(Out, (uint16_t) Data.st_mode); 1162 Emit64(Out, (uint64_t) Data.st_mtime); 1163 Emit64(Out, (uint64_t) Data.st_size); 1164 1165 assert(Out.tell() - Start == DataLen && "Wrong data length"); 1166 } 1167}; 1168} // end anonymous namespace 1169 1170/// \brief Write the stat() system call cache to the AST file. 1171void ASTWriter::WriteStatCache(MemorizeStatCalls &StatCalls) { 1172 // Build the on-disk hash table containing information about every 1173 // stat() call. 1174 OnDiskChainedHashTableGenerator<ASTStatCacheTrait> Generator; 1175 unsigned NumStatEntries = 0; 1176 for (MemorizeStatCalls::iterator Stat = StatCalls.begin(), 1177 StatEnd = StatCalls.end(); 1178 Stat != StatEnd; ++Stat, ++NumStatEntries) { 1179 StringRef Filename = Stat->first(); 1180 Generator.insert(Filename.data(), Stat->second); 1181 } 1182 1183 // Create the on-disk hash table in a buffer. 1184 llvm::SmallString<4096> StatCacheData; 1185 uint32_t BucketOffset; 1186 { 1187 llvm::raw_svector_ostream Out(StatCacheData); 1188 // Make sure that no bucket is at offset 0 1189 clang::io::Emit32(Out, 0); 1190 BucketOffset = Generator.Emit(Out); 1191 } 1192 1193 // Create a blob abbreviation 1194 using namespace llvm; 1195 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1196 Abbrev->Add(BitCodeAbbrevOp(STAT_CACHE)); 1197 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1198 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1199 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1200 unsigned StatCacheAbbrev = Stream.EmitAbbrev(Abbrev); 1201 1202 // Write the stat cache 1203 RecordData Record; 1204 Record.push_back(STAT_CACHE); 1205 Record.push_back(BucketOffset); 1206 Record.push_back(NumStatEntries); 1207 Stream.EmitRecordWithBlob(StatCacheAbbrev, Record, StatCacheData.str()); 1208} 1209 1210//===----------------------------------------------------------------------===// 1211// Source Manager Serialization 1212//===----------------------------------------------------------------------===// 1213 1214/// \brief Create an abbreviation for the SLocEntry that refers to a 1215/// file. 1216static unsigned CreateSLocFileAbbrev(llvm::BitstreamWriter &Stream) { 1217 using namespace llvm; 1218 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1219 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_FILE_ENTRY)); 1220 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset 1221 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location 1222 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Characteristic 1223 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives 1224 // FileEntry fields. 1225 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 12)); // Size 1226 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // Modification time 1227 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name 1228 return Stream.EmitAbbrev(Abbrev); 1229} 1230 1231/// \brief Create an abbreviation for the SLocEntry that refers to a 1232/// buffer. 1233static unsigned CreateSLocBufferAbbrev(llvm::BitstreamWriter &Stream) { 1234 using namespace llvm; 1235 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1236 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_BUFFER_ENTRY)); 1237 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset 1238 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location 1239 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Characteristic 1240 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives 1241 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Buffer name blob 1242 return Stream.EmitAbbrev(Abbrev); 1243} 1244 1245/// \brief Create an abbreviation for the SLocEntry that refers to a 1246/// buffer's blob. 1247static unsigned CreateSLocBufferBlobAbbrev(llvm::BitstreamWriter &Stream) { 1248 using namespace llvm; 1249 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1250 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_BUFFER_BLOB)); 1251 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Blob 1252 return Stream.EmitAbbrev(Abbrev); 1253} 1254 1255/// \brief Create an abbreviation for the SLocEntry that refers to a macro 1256/// expansion. 1257static unsigned CreateSLocExpansionAbbrev(llvm::BitstreamWriter &Stream) { 1258 using namespace llvm; 1259 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1260 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_EXPANSION_ENTRY)); 1261 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset 1262 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Spelling location 1263 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Start location 1264 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // End location 1265 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Token length 1266 return Stream.EmitAbbrev(Abbrev); 1267} 1268 1269namespace { 1270 // Trait used for the on-disk hash table of header search information. 1271 class HeaderFileInfoTrait { 1272 ASTWriter &Writer; 1273 HeaderSearch &HS; 1274 1275 public: 1276 HeaderFileInfoTrait(ASTWriter &Writer, HeaderSearch &HS) 1277 : Writer(Writer), HS(HS) { } 1278 1279 typedef const char *key_type; 1280 typedef key_type key_type_ref; 1281 1282 typedef HeaderFileInfo data_type; 1283 typedef const data_type &data_type_ref; 1284 1285 static unsigned ComputeHash(const char *path) { 1286 // The hash is based only on the filename portion of the key, so that the 1287 // reader can match based on filenames when symlinking or excess path 1288 // elements ("foo/../", "../") change the form of the name. However, 1289 // complete path is still the key. 1290 return llvm::HashString(llvm::sys::path::filename(path)); 1291 } 1292 1293 std::pair<unsigned,unsigned> 1294 EmitKeyDataLength(raw_ostream& Out, const char *path, 1295 data_type_ref Data) { 1296 unsigned StrLen = strlen(path); 1297 clang::io::Emit16(Out, StrLen); 1298 unsigned DataLen = 1 + 2 + 4; 1299 clang::io::Emit8(Out, DataLen); 1300 return std::make_pair(StrLen + 1, DataLen); 1301 } 1302 1303 void EmitKey(raw_ostream& Out, const char *path, unsigned KeyLen) { 1304 Out.write(path, KeyLen); 1305 } 1306 1307 void EmitData(raw_ostream &Out, key_type_ref, 1308 data_type_ref Data, unsigned DataLen) { 1309 using namespace clang::io; 1310 uint64_t Start = Out.tell(); (void)Start; 1311 1312 unsigned char Flags = (Data.isImport << 4) 1313 | (Data.isPragmaOnce << 3) 1314 | (Data.DirInfo << 1) 1315 | Data.Resolved; 1316 Emit8(Out, (uint8_t)Flags); 1317 Emit16(Out, (uint16_t) Data.NumIncludes); 1318 1319 if (!Data.ControllingMacro) 1320 Emit32(Out, (uint32_t)Data.ControllingMacroID); 1321 else 1322 Emit32(Out, (uint32_t)Writer.getIdentifierRef(Data.ControllingMacro)); 1323 assert(Out.tell() - Start == DataLen && "Wrong data length"); 1324 } 1325 }; 1326} // end anonymous namespace 1327 1328/// \brief Write the header search block for the list of files that 1329/// 1330/// \param HS The header search structure to save. 1331/// 1332/// \param Chain Whether we're creating a chained AST file. 1333void ASTWriter::WriteHeaderSearch(HeaderSearch &HS, StringRef isysroot) { 1334 SmallVector<const FileEntry *, 16> FilesByUID; 1335 HS.getFileMgr().GetUniqueIDMapping(FilesByUID); 1336 1337 if (FilesByUID.size() > HS.header_file_size()) 1338 FilesByUID.resize(HS.header_file_size()); 1339 1340 HeaderFileInfoTrait GeneratorTrait(*this, HS); 1341 OnDiskChainedHashTableGenerator<HeaderFileInfoTrait> Generator; 1342 SmallVector<const char *, 4> SavedStrings; 1343 unsigned NumHeaderSearchEntries = 0; 1344 for (unsigned UID = 0, LastUID = FilesByUID.size(); UID != LastUID; ++UID) { 1345 const FileEntry *File = FilesByUID[UID]; 1346 if (!File) 1347 continue; 1348 1349 const HeaderFileInfo &HFI = HS.header_file_begin()[UID]; 1350 if (HFI.External && Chain) 1351 continue; 1352 1353 // Turn the file name into an absolute path, if it isn't already. 1354 const char *Filename = File->getName(); 1355 Filename = adjustFilenameForRelocatablePCH(Filename, isysroot); 1356 1357 // If we performed any translation on the file name at all, we need to 1358 // save this string, since the generator will refer to it later. 1359 if (Filename != File->getName()) { 1360 Filename = strdup(Filename); 1361 SavedStrings.push_back(Filename); 1362 } 1363 1364 Generator.insert(Filename, HFI, GeneratorTrait); 1365 ++NumHeaderSearchEntries; 1366 } 1367 1368 // Create the on-disk hash table in a buffer. 1369 llvm::SmallString<4096> TableData; 1370 uint32_t BucketOffset; 1371 { 1372 llvm::raw_svector_ostream Out(TableData); 1373 // Make sure that no bucket is at offset 0 1374 clang::io::Emit32(Out, 0); 1375 BucketOffset = Generator.Emit(Out, GeneratorTrait); 1376 } 1377 1378 // Create a blob abbreviation 1379 using namespace llvm; 1380 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1381 Abbrev->Add(BitCodeAbbrevOp(HEADER_SEARCH_TABLE)); 1382 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1383 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1384 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1385 unsigned TableAbbrev = Stream.EmitAbbrev(Abbrev); 1386 1387 // Write the stat cache 1388 RecordData Record; 1389 Record.push_back(HEADER_SEARCH_TABLE); 1390 Record.push_back(BucketOffset); 1391 Record.push_back(NumHeaderSearchEntries); 1392 Stream.EmitRecordWithBlob(TableAbbrev, Record, TableData.str()); 1393 1394 // Free all of the strings we had to duplicate. 1395 for (unsigned I = 0, N = SavedStrings.size(); I != N; ++I) 1396 free((void*)SavedStrings[I]); 1397} 1398 1399/// \brief Writes the block containing the serialized form of the 1400/// source manager. 1401/// 1402/// TODO: We should probably use an on-disk hash table (stored in a 1403/// blob), indexed based on the file name, so that we only create 1404/// entries for files that we actually need. In the common case (no 1405/// errors), we probably won't have to create file entries for any of 1406/// the files in the AST. 1407void ASTWriter::WriteSourceManagerBlock(SourceManager &SourceMgr, 1408 const Preprocessor &PP, 1409 StringRef isysroot) { 1410 RecordData Record; 1411 1412 // Enter the source manager block. 1413 Stream.EnterSubblock(SOURCE_MANAGER_BLOCK_ID, 3); 1414 1415 // Abbreviations for the various kinds of source-location entries. 1416 unsigned SLocFileAbbrv = CreateSLocFileAbbrev(Stream); 1417 unsigned SLocBufferAbbrv = CreateSLocBufferAbbrev(Stream); 1418 unsigned SLocBufferBlobAbbrv = CreateSLocBufferBlobAbbrev(Stream); 1419 unsigned SLocExpansionAbbrv = CreateSLocExpansionAbbrev(Stream); 1420 1421 // Write out the source location entry table. We skip the first 1422 // entry, which is always the same dummy entry. 1423 std::vector<uint32_t> SLocEntryOffsets; 1424 // Write out the offsets of only source location file entries. 1425 // We will go through them in ASTReader::validateFileEntries(). 1426 std::vector<uint32_t> SLocFileEntryOffsets; 1427 RecordData PreloadSLocs; 1428 SLocEntryOffsets.reserve(SourceMgr.local_sloc_entry_size() - 1); 1429 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size(); 1430 I != N; ++I) { 1431 // Get this source location entry. 1432 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I); 1433 1434 // Record the offset of this source-location entry. 1435 SLocEntryOffsets.push_back(Stream.GetCurrentBitNo()); 1436 1437 // Figure out which record code to use. 1438 unsigned Code; 1439 if (SLoc->isFile()) { 1440 if (SLoc->getFile().getContentCache()->OrigEntry) { 1441 Code = SM_SLOC_FILE_ENTRY; 1442 SLocFileEntryOffsets.push_back(Stream.GetCurrentBitNo()); 1443 } else 1444 Code = SM_SLOC_BUFFER_ENTRY; 1445 } else 1446 Code = SM_SLOC_EXPANSION_ENTRY; 1447 Record.clear(); 1448 Record.push_back(Code); 1449 1450 // Starting offset of this entry within this module, so skip the dummy. 1451 Record.push_back(SLoc->getOffset() - 2); 1452 if (SLoc->isFile()) { 1453 const SrcMgr::FileInfo &File = SLoc->getFile(); 1454 Record.push_back(File.getIncludeLoc().getRawEncoding()); 1455 Record.push_back(File.getFileCharacteristic()); // FIXME: stable encoding 1456 Record.push_back(File.hasLineDirectives()); 1457 1458 const SrcMgr::ContentCache *Content = File.getContentCache(); 1459 if (Content->OrigEntry) { 1460 assert(Content->OrigEntry == Content->ContentsEntry && 1461 "Writing to AST an overriden file is not supported"); 1462 1463 // The source location entry is a file. The blob associated 1464 // with this entry is the file name. 1465 1466 // Emit size/modification time for this file. 1467 Record.push_back(Content->OrigEntry->getSize()); 1468 Record.push_back(Content->OrigEntry->getModificationTime()); 1469 1470 // Turn the file name into an absolute path, if it isn't already. 1471 const char *Filename = Content->OrigEntry->getName(); 1472 llvm::SmallString<128> FilePath(Filename); 1473 1474 // Ask the file manager to fixup the relative path for us. This will 1475 // honor the working directory. 1476 SourceMgr.getFileManager().FixupRelativePath(FilePath); 1477 1478 // FIXME: This call to make_absolute shouldn't be necessary, the 1479 // call to FixupRelativePath should always return an absolute path. 1480 llvm::sys::fs::make_absolute(FilePath); 1481 Filename = FilePath.c_str(); 1482 1483 Filename = adjustFilenameForRelocatablePCH(Filename, isysroot); 1484 Stream.EmitRecordWithBlob(SLocFileAbbrv, Record, Filename); 1485 } else { 1486 // The source location entry is a buffer. The blob associated 1487 // with this entry contains the contents of the buffer. 1488 1489 // We add one to the size so that we capture the trailing NULL 1490 // that is required by llvm::MemoryBuffer::getMemBuffer (on 1491 // the reader side). 1492 const llvm::MemoryBuffer *Buffer 1493 = Content->getBuffer(PP.getDiagnostics(), PP.getSourceManager()); 1494 const char *Name = Buffer->getBufferIdentifier(); 1495 Stream.EmitRecordWithBlob(SLocBufferAbbrv, Record, 1496 StringRef(Name, strlen(Name) + 1)); 1497 Record.clear(); 1498 Record.push_back(SM_SLOC_BUFFER_BLOB); 1499 Stream.EmitRecordWithBlob(SLocBufferBlobAbbrv, Record, 1500 StringRef(Buffer->getBufferStart(), 1501 Buffer->getBufferSize() + 1)); 1502 1503 if (strcmp(Name, "<built-in>") == 0) { 1504 PreloadSLocs.push_back(SLocEntryOffsets.size()); 1505 } 1506 } 1507 } else { 1508 // The source location entry is a macro expansion. 1509 const SrcMgr::ExpansionInfo &Expansion = SLoc->getExpansion(); 1510 Record.push_back(Expansion.getSpellingLoc().getRawEncoding()); 1511 Record.push_back(Expansion.getExpansionLocStart().getRawEncoding()); 1512 Record.push_back(Expansion.getExpansionLocEnd().getRawEncoding()); 1513 1514 // Compute the token length for this macro expansion. 1515 unsigned NextOffset = SourceMgr.getNextLocalOffset(); 1516 if (I + 1 != N) 1517 NextOffset = SourceMgr.getLocalSLocEntry(I + 1).getOffset(); 1518 Record.push_back(NextOffset - SLoc->getOffset() - 1); 1519 Stream.EmitRecordWithAbbrev(SLocExpansionAbbrv, Record); 1520 } 1521 } 1522 1523 Stream.ExitBlock(); 1524 1525 if (SLocEntryOffsets.empty()) 1526 return; 1527 1528 // Write the source-location offsets table into the AST block. This 1529 // table is used for lazily loading source-location information. 1530 using namespace llvm; 1531 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1532 Abbrev->Add(BitCodeAbbrevOp(SOURCE_LOCATION_OFFSETS)); 1533 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs 1534 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // total size 1535 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets 1536 unsigned SLocOffsetsAbbrev = Stream.EmitAbbrev(Abbrev); 1537 1538 Record.clear(); 1539 Record.push_back(SOURCE_LOCATION_OFFSETS); 1540 Record.push_back(SLocEntryOffsets.size()); 1541 Record.push_back(SourceMgr.getNextLocalOffset() - 1); // skip dummy 1542 Stream.EmitRecordWithBlob(SLocOffsetsAbbrev, Record, data(SLocEntryOffsets)); 1543 1544 // If we have module dependencies, write the mapping from source locations to 1545 // their containing modules, so that the reader can build the remapping. 1546 if (Chain) { 1547 // The map consists solely of a blob with the following format: 1548 // *(offset:i32 len:i16 name:len*i8) 1549 // Sorted by offset. 1550 typedef std::pair<uint32_t, StringRef> ModuleOffset; 1551 SmallVector<ModuleOffset, 16> Modules; 1552 1553 Chain->ModuleMgr.exportLookup(Modules); 1554 1555 Abbrev = new BitCodeAbbrev(); 1556 Abbrev->Add(BitCodeAbbrevOp(SOURCE_LOCATION_MAP)); 1557 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1558 unsigned SLocMapAbbrev = Stream.EmitAbbrev(Abbrev); 1559 llvm::SmallString<2048> Buffer; 1560 { 1561 llvm::raw_svector_ostream Out(Buffer); 1562 for (SmallVector<ModuleOffset, 16>::iterator I = Modules.begin(), 1563 E = Modules.end(); 1564 I != E; ++I) { 1565 io::Emit32(Out, I->first); 1566 io::Emit16(Out, I->second.size()); 1567 Out.write(I->second.data(), I->second.size()); 1568 } 1569 } 1570 Record.clear(); 1571 Record.push_back(SOURCE_LOCATION_MAP); 1572 Stream.EmitRecordWithBlob(SLocMapAbbrev, Record, 1573 Buffer.data(), Buffer.size()); 1574 } 1575 1576 Abbrev = new BitCodeAbbrev(); 1577 Abbrev->Add(BitCodeAbbrevOp(FILE_SOURCE_LOCATION_OFFSETS)); 1578 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs 1579 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets 1580 unsigned SLocFileOffsetsAbbrev = Stream.EmitAbbrev(Abbrev); 1581 1582 Record.clear(); 1583 Record.push_back(FILE_SOURCE_LOCATION_OFFSETS); 1584 Record.push_back(SLocFileEntryOffsets.size()); 1585 Stream.EmitRecordWithBlob(SLocFileOffsetsAbbrev, Record, 1586 data(SLocFileEntryOffsets)); 1587 1588 // Write the source location entry preloads array, telling the AST 1589 // reader which source locations entries it should load eagerly. 1590 Stream.EmitRecord(SOURCE_LOCATION_PRELOADS, PreloadSLocs); 1591 1592 // Write the line table. It depends on remapping working, so it must come 1593 // after the source location offsets. 1594 if (SourceMgr.hasLineTable()) { 1595 LineTableInfo &LineTable = SourceMgr.getLineTable(); 1596 1597 Record.clear(); 1598 // Emit the file names 1599 Record.push_back(LineTable.getNumFilenames()); 1600 for (unsigned I = 0, N = LineTable.getNumFilenames(); I != N; ++I) { 1601 // Emit the file name 1602 const char *Filename = LineTable.getFilename(I); 1603 Filename = adjustFilenameForRelocatablePCH(Filename, isysroot); 1604 unsigned FilenameLen = Filename? strlen(Filename) : 0; 1605 Record.push_back(FilenameLen); 1606 if (FilenameLen) 1607 Record.insert(Record.end(), Filename, Filename + FilenameLen); 1608 } 1609 1610 // Emit the line entries 1611 for (LineTableInfo::iterator L = LineTable.begin(), LEnd = LineTable.end(); 1612 L != LEnd; ++L) { 1613 // Only emit entries for local files. 1614 if (L->first < 0) 1615 continue; 1616 1617 // Emit the file ID 1618 Record.push_back(L->first); 1619 1620 // Emit the line entries 1621 Record.push_back(L->second.size()); 1622 for (std::vector<LineEntry>::iterator LE = L->second.begin(), 1623 LEEnd = L->second.end(); 1624 LE != LEEnd; ++LE) { 1625 Record.push_back(LE->FileOffset); 1626 Record.push_back(LE->LineNo); 1627 Record.push_back(LE->FilenameID); 1628 Record.push_back((unsigned)LE->FileKind); 1629 Record.push_back(LE->IncludeOffset); 1630 } 1631 } 1632 Stream.EmitRecord(SOURCE_MANAGER_LINE_TABLE, Record); 1633 } 1634} 1635 1636//===----------------------------------------------------------------------===// 1637// Preprocessor Serialization 1638//===----------------------------------------------------------------------===// 1639 1640static int compareMacroDefinitions(const void *XPtr, const void *YPtr) { 1641 const std::pair<const IdentifierInfo *, MacroInfo *> &X = 1642 *(const std::pair<const IdentifierInfo *, MacroInfo *>*)XPtr; 1643 const std::pair<const IdentifierInfo *, MacroInfo *> &Y = 1644 *(const std::pair<const IdentifierInfo *, MacroInfo *>*)YPtr; 1645 return X.first->getName().compare(Y.first->getName()); 1646} 1647 1648/// \brief Writes the block containing the serialized form of the 1649/// preprocessor. 1650/// 1651void ASTWriter::WritePreprocessor(const Preprocessor &PP) { 1652 RecordData Record; 1653 1654 // If the preprocessor __COUNTER__ value has been bumped, remember it. 1655 if (PP.getCounterValue() != 0) { 1656 Record.push_back(PP.getCounterValue()); 1657 Stream.EmitRecord(PP_COUNTER_VALUE, Record); 1658 Record.clear(); 1659 } 1660 1661 // Enter the preprocessor block. 1662 Stream.EnterSubblock(PREPROCESSOR_BLOCK_ID, 3); 1663 1664 // If the AST file contains __DATE__ or __TIME__ emit a warning about this. 1665 // FIXME: use diagnostics subsystem for localization etc. 1666 if (PP.SawDateOrTime()) 1667 fprintf(stderr, "warning: precompiled header used __DATE__ or __TIME__.\n"); 1668 1669 1670 // Loop over all the macro definitions that are live at the end of the file, 1671 // emitting each to the PP section. 1672 PreprocessingRecord *PPRec = PP.getPreprocessingRecord(); 1673 1674 // Construct the list of macro definitions that need to be serialized. 1675 SmallVector<std::pair<const IdentifierInfo *, MacroInfo *>, 2> 1676 MacrosToEmit; 1677 llvm::SmallPtrSet<const IdentifierInfo*, 4> MacroDefinitionsSeen; 1678 for (Preprocessor::macro_iterator I = PP.macro_begin(Chain == 0), 1679 E = PP.macro_end(Chain == 0); 1680 I != E; ++I) { 1681 MacroDefinitionsSeen.insert(I->first); 1682 MacrosToEmit.push_back(std::make_pair(I->first, I->second)); 1683 } 1684 1685 // Sort the set of macro definitions that need to be serialized by the 1686 // name of the macro, to provide a stable ordering. 1687 llvm::array_pod_sort(MacrosToEmit.begin(), MacrosToEmit.end(), 1688 &compareMacroDefinitions); 1689 1690 // Resolve any identifiers that defined macros at the time they were 1691 // deserialized, adding them to the list of macros to emit (if appropriate). 1692 for (unsigned I = 0, N = DeserializedMacroNames.size(); I != N; ++I) { 1693 IdentifierInfo *Name 1694 = const_cast<IdentifierInfo *>(DeserializedMacroNames[I]); 1695 if (Name->hasMacroDefinition() && MacroDefinitionsSeen.insert(Name)) 1696 MacrosToEmit.push_back(std::make_pair(Name, PP.getMacroInfo(Name))); 1697 } 1698 1699 for (unsigned I = 0, N = MacrosToEmit.size(); I != N; ++I) { 1700 const IdentifierInfo *Name = MacrosToEmit[I].first; 1701 MacroInfo *MI = MacrosToEmit[I].second; 1702 if (!MI) 1703 continue; 1704 1705 // Don't emit builtin macros like __LINE__ to the AST file unless they have 1706 // been redefined by the header (in which case they are not isBuiltinMacro). 1707 // Also skip macros from a AST file if we're chaining. 1708 1709 // FIXME: There is a (probably minor) optimization we could do here, if 1710 // the macro comes from the original PCH but the identifier comes from a 1711 // chained PCH, by storing the offset into the original PCH rather than 1712 // writing the macro definition a second time. 1713 if (MI->isBuiltinMacro() || 1714 (Chain && Name->isFromAST() && MI->isFromAST())) 1715 continue; 1716 1717 AddIdentifierRef(Name, Record); 1718 MacroOffsets[Name] = Stream.GetCurrentBitNo(); 1719 Record.push_back(MI->getDefinitionLoc().getRawEncoding()); 1720 Record.push_back(MI->isUsed()); 1721 1722 unsigned Code; 1723 if (MI->isObjectLike()) { 1724 Code = PP_MACRO_OBJECT_LIKE; 1725 } else { 1726 Code = PP_MACRO_FUNCTION_LIKE; 1727 1728 Record.push_back(MI->isC99Varargs()); 1729 Record.push_back(MI->isGNUVarargs()); 1730 Record.push_back(MI->getNumArgs()); 1731 for (MacroInfo::arg_iterator I = MI->arg_begin(), E = MI->arg_end(); 1732 I != E; ++I) 1733 AddIdentifierRef(*I, Record); 1734 } 1735 1736 // If we have a detailed preprocessing record, record the macro definition 1737 // ID that corresponds to this macro. 1738 if (PPRec) 1739 Record.push_back(getMacroDefinitionID(PPRec->findMacroDefinition(MI))); 1740 1741 Stream.EmitRecord(Code, Record); 1742 Record.clear(); 1743 1744 // Emit the tokens array. 1745 for (unsigned TokNo = 0, e = MI->getNumTokens(); TokNo != e; ++TokNo) { 1746 // Note that we know that the preprocessor does not have any annotation 1747 // tokens in it because they are created by the parser, and thus can't be 1748 // in a macro definition. 1749 const Token &Tok = MI->getReplacementToken(TokNo); 1750 1751 Record.push_back(Tok.getLocation().getRawEncoding()); 1752 Record.push_back(Tok.getLength()); 1753 1754 // FIXME: When reading literal tokens, reconstruct the literal pointer if 1755 // it is needed. 1756 AddIdentifierRef(Tok.getIdentifierInfo(), Record); 1757 // FIXME: Should translate token kind to a stable encoding. 1758 Record.push_back(Tok.getKind()); 1759 // FIXME: Should translate token flags to a stable encoding. 1760 Record.push_back(Tok.getFlags()); 1761 1762 Stream.EmitRecord(PP_TOKEN, Record); 1763 Record.clear(); 1764 } 1765 ++NumMacros; 1766 } 1767 Stream.ExitBlock(); 1768 1769 if (PPRec) 1770 WritePreprocessorDetail(*PPRec); 1771} 1772 1773void ASTWriter::WritePreprocessorDetail(PreprocessingRecord &PPRec) { 1774 if (PPRec.begin(Chain) == PPRec.end(Chain)) 1775 return; 1776 1777 // Enter the preprocessor block. 1778 Stream.EnterSubblock(PREPROCESSOR_DETAIL_BLOCK_ID, 3); 1779 1780 // If the preprocessor has a preprocessing record, emit it. 1781 unsigned NumPreprocessingRecords = 0; 1782 using namespace llvm; 1783 1784 // Set up the abbreviation for 1785 unsigned InclusionAbbrev = 0; 1786 { 1787 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1788 Abbrev->Add(BitCodeAbbrevOp(PPD_INCLUSION_DIRECTIVE)); 1789 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // index 1790 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // start location 1791 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // end location 1792 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // filename length 1793 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // in quotes 1794 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // kind 1795 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1796 InclusionAbbrev = Stream.EmitAbbrev(Abbrev); 1797 } 1798 1799 unsigned IndexBase = Chain ? PPRec.getNumLoadedPreprocessedEntities() : 0; 1800 RecordData Record; 1801 uint64_t BitsInChain = Chain? Chain->TotalModulesSizeInBits : 0; 1802 for (PreprocessingRecord::iterator E = PPRec.begin(Chain), 1803 EEnd = PPRec.end(Chain); 1804 E != EEnd; ++E) { 1805 Record.clear(); 1806 1807 if (MacroDefinition *MD = dyn_cast<MacroDefinition>(*E)) { 1808 // Record this macro definition's location. 1809 MacroID ID = getMacroDefinitionID(MD); 1810 1811 // Don't write the macro definition if it is from another AST file. 1812 if (ID < FirstMacroID) 1813 continue; 1814 1815 // Notify the serialization listener that we're serializing this entity. 1816 if (SerializationListener) 1817 SerializationListener->SerializedPreprocessedEntity(*E, 1818 BitsInChain + Stream.GetCurrentBitNo()); 1819 1820 unsigned Position = ID - FirstMacroID; 1821 if (Position != MacroDefinitionOffsets.size()) { 1822 if (Position > MacroDefinitionOffsets.size()) 1823 MacroDefinitionOffsets.resize(Position + 1); 1824 1825 MacroDefinitionOffsets[Position] = Stream.GetCurrentBitNo(); 1826 } else 1827 MacroDefinitionOffsets.push_back(Stream.GetCurrentBitNo()); 1828 1829 Record.push_back(IndexBase + NumPreprocessingRecords++); 1830 Record.push_back(ID); 1831 AddSourceLocation(MD->getSourceRange().getBegin(), Record); 1832 AddSourceLocation(MD->getSourceRange().getEnd(), Record); 1833 AddIdentifierRef(MD->getName(), Record); 1834 AddSourceLocation(MD->getLocation(), Record); 1835 Stream.EmitRecord(PPD_MACRO_DEFINITION, Record); 1836 continue; 1837 } 1838 1839 // Notify the serialization listener that we're serializing this entity. 1840 if (SerializationListener) 1841 SerializationListener->SerializedPreprocessedEntity(*E, 1842 BitsInChain + Stream.GetCurrentBitNo()); 1843 1844 if (MacroExpansion *ME = dyn_cast<MacroExpansion>(*E)) { 1845 Record.push_back(IndexBase + NumPreprocessingRecords++); 1846 AddSourceLocation(ME->getSourceRange().getBegin(), Record); 1847 AddSourceLocation(ME->getSourceRange().getEnd(), Record); 1848 AddIdentifierRef(ME->getName(), Record); 1849 Record.push_back(getMacroDefinitionID(ME->getDefinition())); 1850 Stream.EmitRecord(PPD_MACRO_EXPANSION, Record); 1851 continue; 1852 } 1853 1854 if (InclusionDirective *ID = dyn_cast<InclusionDirective>(*E)) { 1855 Record.push_back(PPD_INCLUSION_DIRECTIVE); 1856 Record.push_back(IndexBase + NumPreprocessingRecords++); 1857 AddSourceLocation(ID->getSourceRange().getBegin(), Record); 1858 AddSourceLocation(ID->getSourceRange().getEnd(), Record); 1859 Record.push_back(ID->getFileName().size()); 1860 Record.push_back(ID->wasInQuotes()); 1861 Record.push_back(static_cast<unsigned>(ID->getKind())); 1862 llvm::SmallString<64> Buffer; 1863 Buffer += ID->getFileName(); 1864 Buffer += ID->getFile()->getName(); 1865 Stream.EmitRecordWithBlob(InclusionAbbrev, Record, Buffer); 1866 continue; 1867 } 1868 1869 llvm_unreachable("Unhandled PreprocessedEntity in ASTWriter"); 1870 } 1871 Stream.ExitBlock(); 1872 1873 // Write the offsets table for the preprocessing record. 1874 if (NumPreprocessingRecords > 0) { 1875 // Write the offsets table for identifier IDs. 1876 using namespace llvm; 1877 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1878 Abbrev->Add(BitCodeAbbrevOp(MACRO_DEFINITION_OFFSETS)); 1879 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of records 1880 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of macro defs 1881 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1882 unsigned MacroDefOffsetAbbrev = Stream.EmitAbbrev(Abbrev); 1883 1884 Record.clear(); 1885 Record.push_back(MACRO_DEFINITION_OFFSETS); 1886 Record.push_back(NumPreprocessingRecords); 1887 Record.push_back(MacroDefinitionOffsets.size()); 1888 Stream.EmitRecordWithBlob(MacroDefOffsetAbbrev, Record, 1889 data(MacroDefinitionOffsets)); 1890 } 1891} 1892 1893void ASTWriter::WritePragmaDiagnosticMappings(const Diagnostic &Diag) { 1894 RecordData Record; 1895 for (Diagnostic::DiagStatePointsTy::const_iterator 1896 I = Diag.DiagStatePoints.begin(), E = Diag.DiagStatePoints.end(); 1897 I != E; ++I) { 1898 const Diagnostic::DiagStatePoint &point = *I; 1899 if (point.Loc.isInvalid()) 1900 continue; 1901 1902 Record.push_back(point.Loc.getRawEncoding()); 1903 for (Diagnostic::DiagState::iterator 1904 I = point.State->begin(), E = point.State->end(); I != E; ++I) { 1905 unsigned diag = I->first, map = I->second; 1906 if (map & 0x10) { // mapping from a diagnostic pragma. 1907 Record.push_back(diag); 1908 Record.push_back(map & 0x7); 1909 } 1910 } 1911 Record.push_back(-1); // mark the end of the diag/map pairs for this 1912 // location. 1913 } 1914 1915 if (!Record.empty()) 1916 Stream.EmitRecord(DIAG_PRAGMA_MAPPINGS, Record); 1917} 1918 1919void ASTWriter::WriteCXXBaseSpecifiersOffsets() { 1920 if (CXXBaseSpecifiersOffsets.empty()) 1921 return; 1922 1923 RecordData Record; 1924 1925 // Create a blob abbreviation for the C++ base specifiers offsets. 1926 using namespace llvm; 1927 1928 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1929 Abbrev->Add(BitCodeAbbrevOp(CXX_BASE_SPECIFIER_OFFSETS)); 1930 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size 1931 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1932 unsigned BaseSpecifierOffsetAbbrev = Stream.EmitAbbrev(Abbrev); 1933 1934 // Write the selector offsets table. 1935 Record.clear(); 1936 Record.push_back(CXX_BASE_SPECIFIER_OFFSETS); 1937 Record.push_back(CXXBaseSpecifiersOffsets.size()); 1938 Stream.EmitRecordWithBlob(BaseSpecifierOffsetAbbrev, Record, 1939 data(CXXBaseSpecifiersOffsets)); 1940} 1941 1942//===----------------------------------------------------------------------===// 1943// Type Serialization 1944//===----------------------------------------------------------------------===// 1945 1946/// \brief Write the representation of a type to the AST stream. 1947void ASTWriter::WriteType(QualType T) { 1948 TypeIdx &Idx = TypeIdxs[T]; 1949 if (Idx.getIndex() == 0) // we haven't seen this type before. 1950 Idx = TypeIdx(NextTypeID++); 1951 1952 assert(Idx.getIndex() >= FirstTypeID && "Re-writing a type from a prior AST"); 1953 1954 // Record the offset for this type. 1955 unsigned Index = Idx.getIndex() - FirstTypeID; 1956 if (TypeOffsets.size() == Index) 1957 TypeOffsets.push_back(Stream.GetCurrentBitNo()); 1958 else if (TypeOffsets.size() < Index) { 1959 TypeOffsets.resize(Index + 1); 1960 TypeOffsets[Index] = Stream.GetCurrentBitNo(); 1961 } 1962 1963 RecordData Record; 1964 1965 // Emit the type's representation. 1966 ASTTypeWriter W(*this, Record); 1967 1968 if (T.hasLocalNonFastQualifiers()) { 1969 Qualifiers Qs = T.getLocalQualifiers(); 1970 AddTypeRef(T.getLocalUnqualifiedType(), Record); 1971 Record.push_back(Qs.getAsOpaqueValue()); 1972 W.Code = TYPE_EXT_QUAL; 1973 } else { 1974 switch (T->getTypeClass()) { 1975 // For all of the concrete, non-dependent types, call the 1976 // appropriate visitor function. 1977#define TYPE(Class, Base) \ 1978 case Type::Class: W.Visit##Class##Type(cast<Class##Type>(T)); break; 1979#define ABSTRACT_TYPE(Class, Base) 1980#include "clang/AST/TypeNodes.def" 1981 } 1982 } 1983 1984 // Emit the serialized record. 1985 Stream.EmitRecord(W.Code, Record); 1986 1987 // Flush any expressions that were written as part of this type. 1988 FlushStmts(); 1989} 1990 1991//===----------------------------------------------------------------------===// 1992// Declaration Serialization 1993//===----------------------------------------------------------------------===// 1994 1995/// \brief Write the block containing all of the declaration IDs 1996/// lexically declared within the given DeclContext. 1997/// 1998/// \returns the offset of the DECL_CONTEXT_LEXICAL block within the 1999/// bistream, or 0 if no block was written. 2000uint64_t ASTWriter::WriteDeclContextLexicalBlock(ASTContext &Context, 2001 DeclContext *DC) { 2002 if (DC->decls_empty()) 2003 return 0; 2004 2005 uint64_t Offset = Stream.GetCurrentBitNo(); 2006 RecordData Record; 2007 Record.push_back(DECL_CONTEXT_LEXICAL); 2008 SmallVector<KindDeclIDPair, 64> Decls; 2009 for (DeclContext::decl_iterator D = DC->decls_begin(), DEnd = DC->decls_end(); 2010 D != DEnd; ++D) 2011 Decls.push_back(std::make_pair((*D)->getKind(), GetDeclRef(*D))); 2012 2013 ++NumLexicalDeclContexts; 2014 Stream.EmitRecordWithBlob(DeclContextLexicalAbbrev, Record, data(Decls)); 2015 return Offset; 2016} 2017 2018void ASTWriter::WriteTypeDeclOffsets() { 2019 using namespace llvm; 2020 RecordData Record; 2021 2022 // Write the type offsets array 2023 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 2024 Abbrev->Add(BitCodeAbbrevOp(TYPE_OFFSET)); 2025 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of types 2026 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // types block 2027 unsigned TypeOffsetAbbrev = Stream.EmitAbbrev(Abbrev); 2028 Record.clear(); 2029 Record.push_back(TYPE_OFFSET); 2030 Record.push_back(TypeOffsets.size()); 2031 Stream.EmitRecordWithBlob(TypeOffsetAbbrev, Record, data(TypeOffsets)); 2032 2033 // Write the declaration offsets array 2034 Abbrev = new BitCodeAbbrev(); 2035 Abbrev->Add(BitCodeAbbrevOp(DECL_OFFSET)); 2036 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of declarations 2037 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // declarations block 2038 unsigned DeclOffsetAbbrev = Stream.EmitAbbrev(Abbrev); 2039 Record.clear(); 2040 Record.push_back(DECL_OFFSET); 2041 Record.push_back(DeclOffsets.size()); 2042 Stream.EmitRecordWithBlob(DeclOffsetAbbrev, Record, data(DeclOffsets)); 2043} 2044 2045//===----------------------------------------------------------------------===// 2046// Global Method Pool and Selector Serialization 2047//===----------------------------------------------------------------------===// 2048 2049namespace { 2050// Trait used for the on-disk hash table used in the method pool. 2051class ASTMethodPoolTrait { 2052 ASTWriter &Writer; 2053 2054public: 2055 typedef Selector key_type; 2056 typedef key_type key_type_ref; 2057 2058 struct data_type { 2059 SelectorID ID; 2060 ObjCMethodList Instance, Factory; 2061 }; 2062 typedef const data_type& data_type_ref; 2063 2064 explicit ASTMethodPoolTrait(ASTWriter &Writer) : Writer(Writer) { } 2065 2066 static unsigned ComputeHash(Selector Sel) { 2067 return serialization::ComputeHash(Sel); 2068 } 2069 2070 std::pair<unsigned,unsigned> 2071 EmitKeyDataLength(raw_ostream& Out, Selector Sel, 2072 data_type_ref Methods) { 2073 unsigned KeyLen = 2 + (Sel.getNumArgs()? Sel.getNumArgs() * 4 : 4); 2074 clang::io::Emit16(Out, KeyLen); 2075 unsigned DataLen = 4 + 2 + 2; // 2 bytes for each of the method counts 2076 for (const ObjCMethodList *Method = &Methods.Instance; Method; 2077 Method = Method->Next) 2078 if (Method->Method) 2079 DataLen += 4; 2080 for (const ObjCMethodList *Method = &Methods.Factory; Method; 2081 Method = Method->Next) 2082 if (Method->Method) 2083 DataLen += 4; 2084 clang::io::Emit16(Out, DataLen); 2085 return std::make_pair(KeyLen, DataLen); 2086 } 2087 2088 void EmitKey(raw_ostream& Out, Selector Sel, unsigned) { 2089 uint64_t Start = Out.tell(); 2090 assert((Start >> 32) == 0 && "Selector key offset too large"); 2091 Writer.SetSelectorOffset(Sel, Start); 2092 unsigned N = Sel.getNumArgs(); 2093 clang::io::Emit16(Out, N); 2094 if (N == 0) 2095 N = 1; 2096 for (unsigned I = 0; I != N; ++I) 2097 clang::io::Emit32(Out, 2098 Writer.getIdentifierRef(Sel.getIdentifierInfoForSlot(I))); 2099 } 2100 2101 void EmitData(raw_ostream& Out, key_type_ref, 2102 data_type_ref Methods, unsigned DataLen) { 2103 uint64_t Start = Out.tell(); (void)Start; 2104 clang::io::Emit32(Out, Methods.ID); 2105 unsigned NumInstanceMethods = 0; 2106 for (const ObjCMethodList *Method = &Methods.Instance; Method; 2107 Method = Method->Next) 2108 if (Method->Method) 2109 ++NumInstanceMethods; 2110 2111 unsigned NumFactoryMethods = 0; 2112 for (const ObjCMethodList *Method = &Methods.Factory; Method; 2113 Method = Method->Next) 2114 if (Method->Method) 2115 ++NumFactoryMethods; 2116 2117 clang::io::Emit16(Out, NumInstanceMethods); 2118 clang::io::Emit16(Out, NumFactoryMethods); 2119 for (const ObjCMethodList *Method = &Methods.Instance; Method; 2120 Method = Method->Next) 2121 if (Method->Method) 2122 clang::io::Emit32(Out, Writer.getDeclID(Method->Method)); 2123 for (const ObjCMethodList *Method = &Methods.Factory; Method; 2124 Method = Method->Next) 2125 if (Method->Method) 2126 clang::io::Emit32(Out, Writer.getDeclID(Method->Method)); 2127 2128 assert(Out.tell() - Start == DataLen && "Data length is wrong"); 2129 } 2130}; 2131} // end anonymous namespace 2132 2133/// \brief Write ObjC data: selectors and the method pool. 2134/// 2135/// The method pool contains both instance and factory methods, stored 2136/// in an on-disk hash table indexed by the selector. The hash table also 2137/// contains an empty entry for every other selector known to Sema. 2138void ASTWriter::WriteSelectors(Sema &SemaRef) { 2139 using namespace llvm; 2140 2141 // Do we have to do anything at all? 2142 if (SemaRef.MethodPool.empty() && SelectorIDs.empty()) 2143 return; 2144 unsigned NumTableEntries = 0; 2145 // Create and write out the blob that contains selectors and the method pool. 2146 { 2147 OnDiskChainedHashTableGenerator<ASTMethodPoolTrait> Generator; 2148 ASTMethodPoolTrait Trait(*this); 2149 2150 // Create the on-disk hash table representation. We walk through every 2151 // selector we've seen and look it up in the method pool. 2152 SelectorOffsets.resize(NextSelectorID - FirstSelectorID); 2153 for (llvm::DenseMap<Selector, SelectorID>::iterator 2154 I = SelectorIDs.begin(), E = SelectorIDs.end(); 2155 I != E; ++I) { 2156 Selector S = I->first; 2157 Sema::GlobalMethodPool::iterator F = SemaRef.MethodPool.find(S); 2158 ASTMethodPoolTrait::data_type Data = { 2159 I->second, 2160 ObjCMethodList(), 2161 ObjCMethodList() 2162 }; 2163 if (F != SemaRef.MethodPool.end()) { 2164 Data.Instance = F->second.first; 2165 Data.Factory = F->second.second; 2166 } 2167 // Only write this selector if it's not in an existing AST or something 2168 // changed. 2169 if (Chain && I->second < FirstSelectorID) { 2170 // Selector already exists. Did it change? 2171 bool changed = false; 2172 for (ObjCMethodList *M = &Data.Instance; !changed && M && M->Method; 2173 M = M->Next) { 2174 if (M->Method->getPCHLevel() == 0) 2175 changed = true; 2176 } 2177 for (ObjCMethodList *M = &Data.Factory; !changed && M && M->Method; 2178 M = M->Next) { 2179 if (M->Method->getPCHLevel() == 0) 2180 changed = true; 2181 } 2182 if (!changed) 2183 continue; 2184 } else if (Data.Instance.Method || Data.Factory.Method) { 2185 // A new method pool entry. 2186 ++NumTableEntries; 2187 } 2188 Generator.insert(S, Data, Trait); 2189 } 2190 2191 // Create the on-disk hash table in a buffer. 2192 llvm::SmallString<4096> MethodPool; 2193 uint32_t BucketOffset; 2194 { 2195 ASTMethodPoolTrait Trait(*this); 2196 llvm::raw_svector_ostream Out(MethodPool); 2197 // Make sure that no bucket is at offset 0 2198 clang::io::Emit32(Out, 0); 2199 BucketOffset = Generator.Emit(Out, Trait); 2200 } 2201 2202 // Create a blob abbreviation 2203 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 2204 Abbrev->Add(BitCodeAbbrevOp(METHOD_POOL)); 2205 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 2206 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 2207 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2208 unsigned MethodPoolAbbrev = Stream.EmitAbbrev(Abbrev); 2209 2210 // Write the method pool 2211 RecordData Record; 2212 Record.push_back(METHOD_POOL); 2213 Record.push_back(BucketOffset); 2214 Record.push_back(NumTableEntries); 2215 Stream.EmitRecordWithBlob(MethodPoolAbbrev, Record, MethodPool.str()); 2216 2217 // Create a blob abbreviation for the selector table offsets. 2218 Abbrev = new BitCodeAbbrev(); 2219 Abbrev->Add(BitCodeAbbrevOp(SELECTOR_OFFSETS)); 2220 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size 2221 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2222 unsigned SelectorOffsetAbbrev = Stream.EmitAbbrev(Abbrev); 2223 2224 // Write the selector offsets table. 2225 Record.clear(); 2226 Record.push_back(SELECTOR_OFFSETS); 2227 Record.push_back(SelectorOffsets.size()); 2228 Stream.EmitRecordWithBlob(SelectorOffsetAbbrev, Record, 2229 data(SelectorOffsets)); 2230 } 2231} 2232 2233/// \brief Write the selectors referenced in @selector expression into AST file. 2234void ASTWriter::WriteReferencedSelectorsPool(Sema &SemaRef) { 2235 using namespace llvm; 2236 if (SemaRef.ReferencedSelectors.empty()) 2237 return; 2238 2239 RecordData Record; 2240 2241 // Note: this writes out all references even for a dependent AST. But it is 2242 // very tricky to fix, and given that @selector shouldn't really appear in 2243 // headers, probably not worth it. It's not a correctness issue. 2244 for (DenseMap<Selector, SourceLocation>::iterator S = 2245 SemaRef.ReferencedSelectors.begin(), 2246 E = SemaRef.ReferencedSelectors.end(); S != E; ++S) { 2247 Selector Sel = (*S).first; 2248 SourceLocation Loc = (*S).second; 2249 AddSelectorRef(Sel, Record); 2250 AddSourceLocation(Loc, Record); 2251 } 2252 Stream.EmitRecord(REFERENCED_SELECTOR_POOL, Record); 2253} 2254 2255//===----------------------------------------------------------------------===// 2256// Identifier Table Serialization 2257//===----------------------------------------------------------------------===// 2258 2259namespace { 2260class ASTIdentifierTableTrait { 2261 ASTWriter &Writer; 2262 Preprocessor &PP; 2263 2264 /// \brief Determines whether this is an "interesting" identifier 2265 /// that needs a full IdentifierInfo structure written into the hash 2266 /// table. 2267 static bool isInterestingIdentifier(const IdentifierInfo *II) { 2268 return II->isPoisoned() || 2269 II->isExtensionToken() || 2270 II->hasMacroDefinition() || 2271 II->getObjCOrBuiltinID() || 2272 II->getFETokenInfo<void>(); 2273 } 2274 2275public: 2276 typedef const IdentifierInfo* key_type; 2277 typedef key_type key_type_ref; 2278 2279 typedef IdentID data_type; 2280 typedef data_type data_type_ref; 2281 2282 ASTIdentifierTableTrait(ASTWriter &Writer, Preprocessor &PP) 2283 : Writer(Writer), PP(PP) { } 2284 2285 static unsigned ComputeHash(const IdentifierInfo* II) { 2286 return llvm::HashString(II->getName()); 2287 } 2288 2289 std::pair<unsigned,unsigned> 2290 EmitKeyDataLength(raw_ostream& Out, const IdentifierInfo* II, 2291 IdentID ID) { 2292 unsigned KeyLen = II->getLength() + 1; 2293 unsigned DataLen = 4; // 4 bytes for the persistent ID << 1 2294 if (isInterestingIdentifier(II)) { 2295 DataLen += 2; // 2 bytes for builtin ID, flags 2296 if (II->hasMacroDefinition() && 2297 !PP.getMacroInfo(const_cast<IdentifierInfo *>(II))->isBuiltinMacro()) 2298 DataLen += 4; 2299 for (IdentifierResolver::iterator D = IdentifierResolver::begin(II), 2300 DEnd = IdentifierResolver::end(); 2301 D != DEnd; ++D) 2302 DataLen += sizeof(DeclID); 2303 } 2304 clang::io::Emit16(Out, DataLen); 2305 // We emit the key length after the data length so that every 2306 // string is preceded by a 16-bit length. This matches the PTH 2307 // format for storing identifiers. 2308 clang::io::Emit16(Out, KeyLen); 2309 return std::make_pair(KeyLen, DataLen); 2310 } 2311 2312 void EmitKey(raw_ostream& Out, const IdentifierInfo* II, 2313 unsigned KeyLen) { 2314 // Record the location of the key data. This is used when generating 2315 // the mapping from persistent IDs to strings. 2316 Writer.SetIdentifierOffset(II, Out.tell()); 2317 Out.write(II->getNameStart(), KeyLen); 2318 } 2319 2320 void EmitData(raw_ostream& Out, const IdentifierInfo* II, 2321 IdentID ID, unsigned) { 2322 if (!isInterestingIdentifier(II)) { 2323 clang::io::Emit32(Out, ID << 1); 2324 return; 2325 } 2326 2327 clang::io::Emit32(Out, (ID << 1) | 0x01); 2328 uint32_t Bits = 0; 2329 bool hasMacroDefinition = 2330 II->hasMacroDefinition() && 2331 !PP.getMacroInfo(const_cast<IdentifierInfo *>(II))->isBuiltinMacro(); 2332 Bits = (uint32_t)II->getObjCOrBuiltinID(); 2333 Bits = (Bits << 1) | unsigned(hasMacroDefinition); 2334 Bits = (Bits << 1) | unsigned(II->isExtensionToken()); 2335 Bits = (Bits << 1) | unsigned(II->isPoisoned()); 2336 Bits = (Bits << 1) | unsigned(II->hasRevertedTokenIDToIdentifier()); 2337 Bits = (Bits << 1) | unsigned(II->isCPlusPlusOperatorKeyword()); 2338 clang::io::Emit16(Out, Bits); 2339 2340 if (hasMacroDefinition) 2341 clang::io::Emit32(Out, Writer.getMacroOffset(II)); 2342 2343 // Emit the declaration IDs in reverse order, because the 2344 // IdentifierResolver provides the declarations as they would be 2345 // visible (e.g., the function "stat" would come before the struct 2346 // "stat"), but IdentifierResolver::AddDeclToIdentifierChain() 2347 // adds declarations to the end of the list (so we need to see the 2348 // struct "status" before the function "status"). 2349 // Only emit declarations that aren't from a chained PCH, though. 2350 SmallVector<Decl *, 16> Decls(IdentifierResolver::begin(II), 2351 IdentifierResolver::end()); 2352 for (SmallVector<Decl *, 16>::reverse_iterator D = Decls.rbegin(), 2353 DEnd = Decls.rend(); 2354 D != DEnd; ++D) 2355 clang::io::Emit32(Out, Writer.getDeclID(*D)); 2356 } 2357}; 2358} // end anonymous namespace 2359 2360/// \brief Write the identifier table into the AST file. 2361/// 2362/// The identifier table consists of a blob containing string data 2363/// (the actual identifiers themselves) and a separate "offsets" index 2364/// that maps identifier IDs to locations within the blob. 2365void ASTWriter::WriteIdentifierTable(Preprocessor &PP) { 2366 using namespace llvm; 2367 2368 // Create and write out the blob that contains the identifier 2369 // strings. 2370 { 2371 OnDiskChainedHashTableGenerator<ASTIdentifierTableTrait> Generator; 2372 ASTIdentifierTableTrait Trait(*this, PP); 2373 2374 // Look for any identifiers that were named while processing the 2375 // headers, but are otherwise not needed. We add these to the hash 2376 // table to enable checking of the predefines buffer in the case 2377 // where the user adds new macro definitions when building the AST 2378 // file. 2379 for (IdentifierTable::iterator ID = PP.getIdentifierTable().begin(), 2380 IDEnd = PP.getIdentifierTable().end(); 2381 ID != IDEnd; ++ID) 2382 getIdentifierRef(ID->second); 2383 2384 // Create the on-disk hash table representation. We only store offsets 2385 // for identifiers that appear here for the first time. 2386 IdentifierOffsets.resize(NextIdentID - FirstIdentID); 2387 for (llvm::DenseMap<const IdentifierInfo *, IdentID>::iterator 2388 ID = IdentifierIDs.begin(), IDEnd = IdentifierIDs.end(); 2389 ID != IDEnd; ++ID) { 2390 assert(ID->first && "NULL identifier in identifier table"); 2391 if (!Chain || !ID->first->isFromAST()) 2392 Generator.insert(ID->first, ID->second, Trait); 2393 } 2394 2395 // Create the on-disk hash table in a buffer. 2396 llvm::SmallString<4096> IdentifierTable; 2397 uint32_t BucketOffset; 2398 { 2399 ASTIdentifierTableTrait Trait(*this, PP); 2400 llvm::raw_svector_ostream Out(IdentifierTable); 2401 // Make sure that no bucket is at offset 0 2402 clang::io::Emit32(Out, 0); 2403 BucketOffset = Generator.Emit(Out, Trait); 2404 } 2405 2406 // Create a blob abbreviation 2407 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 2408 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_TABLE)); 2409 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 2410 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2411 unsigned IDTableAbbrev = Stream.EmitAbbrev(Abbrev); 2412 2413 // Write the identifier table 2414 RecordData Record; 2415 Record.push_back(IDENTIFIER_TABLE); 2416 Record.push_back(BucketOffset); 2417 Stream.EmitRecordWithBlob(IDTableAbbrev, Record, IdentifierTable.str()); 2418 } 2419 2420 // Write the offsets table for identifier IDs. 2421 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 2422 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_OFFSET)); 2423 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of identifiers 2424 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2425 unsigned IdentifierOffsetAbbrev = Stream.EmitAbbrev(Abbrev); 2426 2427 RecordData Record; 2428 Record.push_back(IDENTIFIER_OFFSET); 2429 Record.push_back(IdentifierOffsets.size()); 2430 Stream.EmitRecordWithBlob(IdentifierOffsetAbbrev, Record, 2431 data(IdentifierOffsets)); 2432} 2433 2434//===----------------------------------------------------------------------===// 2435// DeclContext's Name Lookup Table Serialization 2436//===----------------------------------------------------------------------===// 2437 2438namespace { 2439// Trait used for the on-disk hash table used in the method pool. 2440class ASTDeclContextNameLookupTrait { 2441 ASTWriter &Writer; 2442 2443public: 2444 typedef DeclarationName key_type; 2445 typedef key_type key_type_ref; 2446 2447 typedef DeclContext::lookup_result data_type; 2448 typedef const data_type& data_type_ref; 2449 2450 explicit ASTDeclContextNameLookupTrait(ASTWriter &Writer) : Writer(Writer) { } 2451 2452 unsigned ComputeHash(DeclarationName Name) { 2453 llvm::FoldingSetNodeID ID; 2454 ID.AddInteger(Name.getNameKind()); 2455 2456 switch (Name.getNameKind()) { 2457 case DeclarationName::Identifier: 2458 ID.AddString(Name.getAsIdentifierInfo()->getName()); 2459 break; 2460 case DeclarationName::ObjCZeroArgSelector: 2461 case DeclarationName::ObjCOneArgSelector: 2462 case DeclarationName::ObjCMultiArgSelector: 2463 ID.AddInteger(serialization::ComputeHash(Name.getObjCSelector())); 2464 break; 2465 case DeclarationName::CXXConstructorName: 2466 case DeclarationName::CXXDestructorName: 2467 case DeclarationName::CXXConversionFunctionName: 2468 ID.AddInteger(Writer.GetOrCreateTypeID(Name.getCXXNameType())); 2469 break; 2470 case DeclarationName::CXXOperatorName: 2471 ID.AddInteger(Name.getCXXOverloadedOperator()); 2472 break; 2473 case DeclarationName::CXXLiteralOperatorName: 2474 ID.AddString(Name.getCXXLiteralIdentifier()->getName()); 2475 case DeclarationName::CXXUsingDirective: 2476 break; 2477 } 2478 2479 return ID.ComputeHash(); 2480 } 2481 2482 std::pair<unsigned,unsigned> 2483 EmitKeyDataLength(raw_ostream& Out, DeclarationName Name, 2484 data_type_ref Lookup) { 2485 unsigned KeyLen = 1; 2486 switch (Name.getNameKind()) { 2487 case DeclarationName::Identifier: 2488 case DeclarationName::ObjCZeroArgSelector: 2489 case DeclarationName::ObjCOneArgSelector: 2490 case DeclarationName::ObjCMultiArgSelector: 2491 case DeclarationName::CXXConstructorName: 2492 case DeclarationName::CXXDestructorName: 2493 case DeclarationName::CXXConversionFunctionName: 2494 case DeclarationName::CXXLiteralOperatorName: 2495 KeyLen += 4; 2496 break; 2497 case DeclarationName::CXXOperatorName: 2498 KeyLen += 1; 2499 break; 2500 case DeclarationName::CXXUsingDirective: 2501 break; 2502 } 2503 clang::io::Emit16(Out, KeyLen); 2504 2505 // 2 bytes for num of decls and 4 for each DeclID. 2506 unsigned DataLen = 2 + 4 * (Lookup.second - Lookup.first); 2507 clang::io::Emit16(Out, DataLen); 2508 2509 return std::make_pair(KeyLen, DataLen); 2510 } 2511 2512 void EmitKey(raw_ostream& Out, DeclarationName Name, unsigned) { 2513 using namespace clang::io; 2514 2515 assert(Name.getNameKind() < 0x100 && "Invalid name kind ?"); 2516 Emit8(Out, Name.getNameKind()); 2517 switch (Name.getNameKind()) { 2518 case DeclarationName::Identifier: 2519 Emit32(Out, Writer.getIdentifierRef(Name.getAsIdentifierInfo())); 2520 break; 2521 case DeclarationName::ObjCZeroArgSelector: 2522 case DeclarationName::ObjCOneArgSelector: 2523 case DeclarationName::ObjCMultiArgSelector: 2524 Emit32(Out, Writer.getSelectorRef(Name.getObjCSelector())); 2525 break; 2526 case DeclarationName::CXXConstructorName: 2527 case DeclarationName::CXXDestructorName: 2528 case DeclarationName::CXXConversionFunctionName: 2529 Emit32(Out, Writer.getTypeID(Name.getCXXNameType())); 2530 break; 2531 case DeclarationName::CXXOperatorName: 2532 assert(Name.getCXXOverloadedOperator() < 0x100 && "Invalid operator ?"); 2533 Emit8(Out, Name.getCXXOverloadedOperator()); 2534 break; 2535 case DeclarationName::CXXLiteralOperatorName: 2536 Emit32(Out, Writer.getIdentifierRef(Name.getCXXLiteralIdentifier())); 2537 break; 2538 case DeclarationName::CXXUsingDirective: 2539 break; 2540 } 2541 } 2542 2543 void EmitData(raw_ostream& Out, key_type_ref, 2544 data_type Lookup, unsigned DataLen) { 2545 uint64_t Start = Out.tell(); (void)Start; 2546 clang::io::Emit16(Out, Lookup.second - Lookup.first); 2547 for (; Lookup.first != Lookup.second; ++Lookup.first) 2548 clang::io::Emit32(Out, Writer.GetDeclRef(*Lookup.first)); 2549 2550 assert(Out.tell() - Start == DataLen && "Data length is wrong"); 2551 } 2552}; 2553} // end anonymous namespace 2554 2555/// \brief Write the block containing all of the declaration IDs 2556/// visible from the given DeclContext. 2557/// 2558/// \returns the offset of the DECL_CONTEXT_VISIBLE block within the 2559/// bitstream, or 0 if no block was written. 2560uint64_t ASTWriter::WriteDeclContextVisibleBlock(ASTContext &Context, 2561 DeclContext *DC) { 2562 if (DC->getPrimaryContext() != DC) 2563 return 0; 2564 2565 // Since there is no name lookup into functions or methods, don't bother to 2566 // build a visible-declarations table for these entities. 2567 if (DC->isFunctionOrMethod()) 2568 return 0; 2569 2570 // If not in C++, we perform name lookup for the translation unit via the 2571 // IdentifierInfo chains, don't bother to build a visible-declarations table. 2572 // FIXME: In C++ we need the visible declarations in order to "see" the 2573 // friend declarations, is there a way to do this without writing the table ? 2574 if (DC->isTranslationUnit() && !Context.getLangOptions().CPlusPlus) 2575 return 0; 2576 2577 // Force the DeclContext to build a its name-lookup table. 2578 if (DC->hasExternalVisibleStorage()) 2579 DC->MaterializeVisibleDeclsFromExternalStorage(); 2580 else 2581 DC->lookup(DeclarationName()); 2582 2583 // Serialize the contents of the mapping used for lookup. Note that, 2584 // although we have two very different code paths, the serialized 2585 // representation is the same for both cases: a declaration name, 2586 // followed by a size, followed by references to the visible 2587 // declarations that have that name. 2588 uint64_t Offset = Stream.GetCurrentBitNo(); 2589 StoredDeclsMap *Map = static_cast<StoredDeclsMap*>(DC->getLookupPtr()); 2590 if (!Map || Map->empty()) 2591 return 0; 2592 2593 OnDiskChainedHashTableGenerator<ASTDeclContextNameLookupTrait> Generator; 2594 ASTDeclContextNameLookupTrait Trait(*this); 2595 2596 // Create the on-disk hash table representation. 2597 for (StoredDeclsMap::iterator D = Map->begin(), DEnd = Map->end(); 2598 D != DEnd; ++D) { 2599 DeclarationName Name = D->first; 2600 DeclContext::lookup_result Result = D->second.getLookupResult(); 2601 Generator.insert(Name, Result, Trait); 2602 } 2603 2604 // Create the on-disk hash table in a buffer. 2605 llvm::SmallString<4096> LookupTable; 2606 uint32_t BucketOffset; 2607 { 2608 llvm::raw_svector_ostream Out(LookupTable); 2609 // Make sure that no bucket is at offset 0 2610 clang::io::Emit32(Out, 0); 2611 BucketOffset = Generator.Emit(Out, Trait); 2612 } 2613 2614 // Write the lookup table 2615 RecordData Record; 2616 Record.push_back(DECL_CONTEXT_VISIBLE); 2617 Record.push_back(BucketOffset); 2618 Stream.EmitRecordWithBlob(DeclContextVisibleLookupAbbrev, Record, 2619 LookupTable.str()); 2620 2621 Stream.EmitRecord(DECL_CONTEXT_VISIBLE, Record); 2622 ++NumVisibleDeclContexts; 2623 return Offset; 2624} 2625 2626/// \brief Write an UPDATE_VISIBLE block for the given context. 2627/// 2628/// UPDATE_VISIBLE blocks contain the declarations that are added to an existing 2629/// DeclContext in a dependent AST file. As such, they only exist for the TU 2630/// (in C++) and for namespaces. 2631void ASTWriter::WriteDeclContextVisibleUpdate(const DeclContext *DC) { 2632 StoredDeclsMap *Map = static_cast<StoredDeclsMap*>(DC->getLookupPtr()); 2633 if (!Map || Map->empty()) 2634 return; 2635 2636 OnDiskChainedHashTableGenerator<ASTDeclContextNameLookupTrait> Generator; 2637 ASTDeclContextNameLookupTrait Trait(*this); 2638 2639 // Create the hash table. 2640 for (StoredDeclsMap::iterator D = Map->begin(), DEnd = Map->end(); 2641 D != DEnd; ++D) { 2642 DeclarationName Name = D->first; 2643 DeclContext::lookup_result Result = D->second.getLookupResult(); 2644 // For any name that appears in this table, the results are complete, i.e. 2645 // they overwrite results from previous PCHs. Merging is always a mess. 2646 Generator.insert(Name, Result, Trait); 2647 } 2648 2649 // Create the on-disk hash table in a buffer. 2650 llvm::SmallString<4096> LookupTable; 2651 uint32_t BucketOffset; 2652 { 2653 llvm::raw_svector_ostream Out(LookupTable); 2654 // Make sure that no bucket is at offset 0 2655 clang::io::Emit32(Out, 0); 2656 BucketOffset = Generator.Emit(Out, Trait); 2657 } 2658 2659 // Write the lookup table 2660 RecordData Record; 2661 Record.push_back(UPDATE_VISIBLE); 2662 Record.push_back(getDeclID(cast<Decl>(DC))); 2663 Record.push_back(BucketOffset); 2664 Stream.EmitRecordWithBlob(UpdateVisibleAbbrev, Record, LookupTable.str()); 2665} 2666 2667/// \brief Write an FP_PRAGMA_OPTIONS block for the given FPOptions. 2668void ASTWriter::WriteFPPragmaOptions(const FPOptions &Opts) { 2669 RecordData Record; 2670 Record.push_back(Opts.fp_contract); 2671 Stream.EmitRecord(FP_PRAGMA_OPTIONS, Record); 2672} 2673 2674/// \brief Write an OPENCL_EXTENSIONS block for the given OpenCLOptions. 2675void ASTWriter::WriteOpenCLExtensions(Sema &SemaRef) { 2676 if (!SemaRef.Context.getLangOptions().OpenCL) 2677 return; 2678 2679 const OpenCLOptions &Opts = SemaRef.getOpenCLOptions(); 2680 RecordData Record; 2681#define OPENCLEXT(nm) Record.push_back(Opts.nm); 2682#include "clang/Basic/OpenCLExtensions.def" 2683 Stream.EmitRecord(OPENCL_EXTENSIONS, Record); 2684} 2685 2686//===----------------------------------------------------------------------===// 2687// General Serialization Routines 2688//===----------------------------------------------------------------------===// 2689 2690/// \brief Write a record containing the given attributes. 2691void ASTWriter::WriteAttributes(const AttrVec &Attrs, RecordDataImpl &Record) { 2692 Record.push_back(Attrs.size()); 2693 for (AttrVec::const_iterator i = Attrs.begin(), e = Attrs.end(); i != e; ++i){ 2694 const Attr * A = *i; 2695 Record.push_back(A->getKind()); // FIXME: stable encoding, target attrs 2696 AddSourceLocation(A->getLocation(), Record); 2697 2698#include "clang/Serialization/AttrPCHWrite.inc" 2699 2700 } 2701} 2702 2703void ASTWriter::AddString(StringRef Str, RecordDataImpl &Record) { 2704 Record.push_back(Str.size()); 2705 Record.insert(Record.end(), Str.begin(), Str.end()); 2706} 2707 2708void ASTWriter::AddVersionTuple(const VersionTuple &Version, 2709 RecordDataImpl &Record) { 2710 Record.push_back(Version.getMajor()); 2711 if (llvm::Optional<unsigned> Minor = Version.getMinor()) 2712 Record.push_back(*Minor + 1); 2713 else 2714 Record.push_back(0); 2715 if (llvm::Optional<unsigned> Subminor = Version.getSubminor()) 2716 Record.push_back(*Subminor + 1); 2717 else 2718 Record.push_back(0); 2719} 2720 2721/// \brief Note that the identifier II occurs at the given offset 2722/// within the identifier table. 2723void ASTWriter::SetIdentifierOffset(const IdentifierInfo *II, uint32_t Offset) { 2724 IdentID ID = IdentifierIDs[II]; 2725 // Only store offsets new to this AST file. Other identifier names are looked 2726 // up earlier in the chain and thus don't need an offset. 2727 if (ID >= FirstIdentID) 2728 IdentifierOffsets[ID - FirstIdentID] = Offset; 2729} 2730 2731/// \brief Note that the selector Sel occurs at the given offset 2732/// within the method pool/selector table. 2733void ASTWriter::SetSelectorOffset(Selector Sel, uint32_t Offset) { 2734 unsigned ID = SelectorIDs[Sel]; 2735 assert(ID && "Unknown selector"); 2736 // Don't record offsets for selectors that are also available in a different 2737 // file. 2738 if (ID < FirstSelectorID) 2739 return; 2740 SelectorOffsets[ID - FirstSelectorID] = Offset; 2741} 2742 2743ASTWriter::ASTWriter(llvm::BitstreamWriter &Stream) 2744 : Stream(Stream), Chain(0), SerializationListener(0), 2745 FirstDeclID(1), NextDeclID(FirstDeclID), 2746 FirstTypeID(NUM_PREDEF_TYPE_IDS), NextTypeID(FirstTypeID), 2747 FirstIdentID(1), NextIdentID(FirstIdentID), FirstSelectorID(1), 2748 NextSelectorID(FirstSelectorID), FirstMacroID(1), NextMacroID(FirstMacroID), 2749 CollectedStmts(&StmtsToEmit), 2750 NumStatements(0), NumMacros(0), NumLexicalDeclContexts(0), 2751 NumVisibleDeclContexts(0), 2752 FirstCXXBaseSpecifiersID(1), NextCXXBaseSpecifiersID(1), 2753 DeclParmVarAbbrev(0), DeclContextLexicalAbbrev(0), 2754 DeclContextVisibleLookupAbbrev(0), UpdateVisibleAbbrev(0), 2755 DeclRefExprAbbrev(0), CharacterLiteralAbbrev(0), 2756 DeclRecordAbbrev(0), IntegerLiteralAbbrev(0), 2757 DeclTypedefAbbrev(0), 2758 DeclVarAbbrev(0), DeclFieldAbbrev(0), 2759 DeclEnumAbbrev(0), DeclObjCIvarAbbrev(0) 2760{ 2761} 2762 2763void ASTWriter::WriteAST(Sema &SemaRef, MemorizeStatCalls *StatCalls, 2764 const std::string &OutputFile, 2765 StringRef isysroot) { 2766 // Emit the file header. 2767 Stream.Emit((unsigned)'C', 8); 2768 Stream.Emit((unsigned)'P', 8); 2769 Stream.Emit((unsigned)'C', 8); 2770 Stream.Emit((unsigned)'H', 8); 2771 2772 WriteBlockInfoBlock(); 2773 2774 if (Chain) 2775 WriteASTChain(SemaRef, StatCalls, isysroot); 2776 else 2777 WriteASTCore(SemaRef, StatCalls, isysroot, OutputFile); 2778} 2779 2780template<typename Vector> 2781static void AddLazyVectorDecls(ASTWriter &Writer, Vector &Vec, 2782 ASTWriter::RecordData &Record) { 2783 for (typename Vector::iterator I = Vec.begin(0, true), E = Vec.end(); 2784 I != E; ++I) { 2785 Writer.AddDeclRef(*I, Record); 2786 } 2787} 2788 2789void ASTWriter::WriteASTCore(Sema &SemaRef, MemorizeStatCalls *StatCalls, 2790 StringRef isysroot, 2791 const std::string &OutputFile) { 2792 using namespace llvm; 2793 2794 ASTContext &Context = SemaRef.Context; 2795 Preprocessor &PP = SemaRef.PP; 2796 2797 // The translation unit is the first declaration we'll emit. 2798 DeclIDs[Context.getTranslationUnitDecl()] = 1; 2799 ++NextDeclID; 2800 DeclTypesToEmit.push(Context.getTranslationUnitDecl()); 2801 2802 // Make sure that we emit IdentifierInfos (and any attached 2803 // declarations) for builtins. 2804 { 2805 IdentifierTable &Table = PP.getIdentifierTable(); 2806 SmallVector<const char *, 32> BuiltinNames; 2807 Context.BuiltinInfo.GetBuiltinNames(BuiltinNames, 2808 Context.getLangOptions().NoBuiltin); 2809 for (unsigned I = 0, N = BuiltinNames.size(); I != N; ++I) 2810 getIdentifierRef(&Table.get(BuiltinNames[I])); 2811 } 2812 2813 // Build a record containing all of the tentative definitions in this file, in 2814 // TentativeDefinitions order. Generally, this record will be empty for 2815 // headers. 2816 RecordData TentativeDefinitions; 2817 AddLazyVectorDecls(*this, SemaRef.TentativeDefinitions, TentativeDefinitions); 2818 2819 // Build a record containing all of the file scoped decls in this file. 2820 RecordData UnusedFileScopedDecls; 2821 AddLazyVectorDecls(*this, SemaRef.UnusedFileScopedDecls, 2822 UnusedFileScopedDecls); 2823 2824 RecordData DelegatingCtorDecls; 2825 AddLazyVectorDecls(*this, SemaRef.DelegatingCtorDecls, DelegatingCtorDecls); 2826 2827 RecordData WeakUndeclaredIdentifiers; 2828 if (!SemaRef.WeakUndeclaredIdentifiers.empty()) { 2829 WeakUndeclaredIdentifiers.push_back( 2830 SemaRef.WeakUndeclaredIdentifiers.size()); 2831 for (llvm::DenseMap<IdentifierInfo*,Sema::WeakInfo>::iterator 2832 I = SemaRef.WeakUndeclaredIdentifiers.begin(), 2833 E = SemaRef.WeakUndeclaredIdentifiers.end(); I != E; ++I) { 2834 AddIdentifierRef(I->first, WeakUndeclaredIdentifiers); 2835 AddIdentifierRef(I->second.getAlias(), WeakUndeclaredIdentifiers); 2836 AddSourceLocation(I->second.getLocation(), WeakUndeclaredIdentifiers); 2837 WeakUndeclaredIdentifiers.push_back(I->second.getUsed()); 2838 } 2839 } 2840 2841 // Build a record containing all of the locally-scoped external 2842 // declarations in this header file. Generally, this record will be 2843 // empty. 2844 RecordData LocallyScopedExternalDecls; 2845 // FIXME: This is filling in the AST file in densemap order which is 2846 // nondeterminstic! 2847 for (llvm::DenseMap<DeclarationName, NamedDecl *>::iterator 2848 TD = SemaRef.LocallyScopedExternalDecls.begin(), 2849 TDEnd = SemaRef.LocallyScopedExternalDecls.end(); 2850 TD != TDEnd; ++TD) 2851 AddDeclRef(TD->second, LocallyScopedExternalDecls); 2852 2853 // Build a record containing all of the ext_vector declarations. 2854 RecordData ExtVectorDecls; 2855 AddLazyVectorDecls(*this, SemaRef.ExtVectorDecls, ExtVectorDecls); 2856 2857 // Build a record containing all of the VTable uses information. 2858 RecordData VTableUses; 2859 if (!SemaRef.VTableUses.empty()) { 2860 VTableUses.push_back(SemaRef.VTableUses.size()); 2861 for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I) { 2862 AddDeclRef(SemaRef.VTableUses[I].first, VTableUses); 2863 AddSourceLocation(SemaRef.VTableUses[I].second, VTableUses); 2864 VTableUses.push_back(SemaRef.VTablesUsed[SemaRef.VTableUses[I].first]); 2865 } 2866 } 2867 2868 // Build a record containing all of dynamic classes declarations. 2869 RecordData DynamicClasses; 2870 AddLazyVectorDecls(*this, SemaRef.DynamicClasses, DynamicClasses); 2871 2872 // Build a record containing all of pending implicit instantiations. 2873 RecordData PendingInstantiations; 2874 for (std::deque<Sema::PendingImplicitInstantiation>::iterator 2875 I = SemaRef.PendingInstantiations.begin(), 2876 N = SemaRef.PendingInstantiations.end(); I != N; ++I) { 2877 AddDeclRef(I->first, PendingInstantiations); 2878 AddSourceLocation(I->second, PendingInstantiations); 2879 } 2880 assert(SemaRef.PendingLocalImplicitInstantiations.empty() && 2881 "There are local ones at end of translation unit!"); 2882 2883 // Build a record containing some declaration references. 2884 RecordData SemaDeclRefs; 2885 if (SemaRef.StdNamespace || SemaRef.StdBadAlloc) { 2886 AddDeclRef(SemaRef.getStdNamespace(), SemaDeclRefs); 2887 AddDeclRef(SemaRef.getStdBadAlloc(), SemaDeclRefs); 2888 } 2889 2890 RecordData CUDASpecialDeclRefs; 2891 if (Context.getcudaConfigureCallDecl()) { 2892 AddDeclRef(Context.getcudaConfigureCallDecl(), CUDASpecialDeclRefs); 2893 } 2894 2895 // Build a record containing all of the known namespaces. 2896 RecordData KnownNamespaces; 2897 for (llvm::DenseMap<NamespaceDecl*, bool>::iterator 2898 I = SemaRef.KnownNamespaces.begin(), 2899 IEnd = SemaRef.KnownNamespaces.end(); 2900 I != IEnd; ++I) { 2901 if (!I->second) 2902 AddDeclRef(I->first, KnownNamespaces); 2903 } 2904 2905 // Write the remaining AST contents. 2906 RecordData Record; 2907 Stream.EnterSubblock(AST_BLOCK_ID, 5); 2908 WriteMetadata(Context, isysroot, OutputFile); 2909 WriteLanguageOptions(Context.getLangOptions()); 2910 if (StatCalls && isysroot.empty()) 2911 WriteStatCache(*StatCalls); 2912 WriteSourceManagerBlock(Context.getSourceManager(), PP, isysroot); 2913 // Write the record of special types. 2914 Record.clear(); 2915 2916 AddTypeRef(Context.getBuiltinVaListType(), Record); 2917 AddTypeRef(Context.getObjCIdType(), Record); 2918 AddTypeRef(Context.getObjCSelType(), Record); 2919 AddTypeRef(Context.getObjCProtoType(), Record); 2920 AddTypeRef(Context.getObjCClassType(), Record); 2921 AddTypeRef(Context.getRawCFConstantStringType(), Record); 2922 AddTypeRef(Context.getRawObjCFastEnumerationStateType(), Record); 2923 AddTypeRef(Context.getFILEType(), Record); 2924 AddTypeRef(Context.getjmp_bufType(), Record); 2925 AddTypeRef(Context.getsigjmp_bufType(), Record); 2926 AddTypeRef(Context.ObjCIdRedefinitionType, Record); 2927 AddTypeRef(Context.ObjCClassRedefinitionType, Record); 2928 AddTypeRef(Context.getRawBlockdescriptorType(), Record); 2929 AddTypeRef(Context.getRawBlockdescriptorExtendedType(), Record); 2930 AddTypeRef(Context.ObjCSelRedefinitionType, Record); 2931 AddTypeRef(Context.getRawNSConstantStringType(), Record); 2932 Record.push_back(Context.isInt128Installed()); 2933 AddTypeRef(Context.AutoDeductTy, Record); 2934 AddTypeRef(Context.AutoRRefDeductTy, Record); 2935 Stream.EmitRecord(SPECIAL_TYPES, Record); 2936 2937 // Keep writing types and declarations until all types and 2938 // declarations have been written. 2939 Stream.EnterSubblock(DECLTYPES_BLOCK_ID, NUM_ALLOWED_ABBREVS_SIZE); 2940 WriteDeclsBlockAbbrevs(); 2941 while (!DeclTypesToEmit.empty()) { 2942 DeclOrType DOT = DeclTypesToEmit.front(); 2943 DeclTypesToEmit.pop(); 2944 if (DOT.isType()) 2945 WriteType(DOT.getType()); 2946 else 2947 WriteDecl(Context, DOT.getDecl()); 2948 } 2949 Stream.ExitBlock(); 2950 2951 WritePreprocessor(PP); 2952 WriteHeaderSearch(PP.getHeaderSearchInfo(), isysroot); 2953 WriteSelectors(SemaRef); 2954 WriteReferencedSelectorsPool(SemaRef); 2955 WriteIdentifierTable(PP); 2956 WriteFPPragmaOptions(SemaRef.getFPOptions()); 2957 WriteOpenCLExtensions(SemaRef); 2958 2959 WriteTypeDeclOffsets(); 2960 WritePragmaDiagnosticMappings(Context.getDiagnostics()); 2961 2962 WriteCXXBaseSpecifiersOffsets(); 2963 2964 // Write the record containing external, unnamed definitions. 2965 if (!ExternalDefinitions.empty()) 2966 Stream.EmitRecord(EXTERNAL_DEFINITIONS, ExternalDefinitions); 2967 2968 // Write the record containing tentative definitions. 2969 if (!TentativeDefinitions.empty()) 2970 Stream.EmitRecord(TENTATIVE_DEFINITIONS, TentativeDefinitions); 2971 2972 // Write the record containing unused file scoped decls. 2973 if (!UnusedFileScopedDecls.empty()) 2974 Stream.EmitRecord(UNUSED_FILESCOPED_DECLS, UnusedFileScopedDecls); 2975 2976 // Write the record containing weak undeclared identifiers. 2977 if (!WeakUndeclaredIdentifiers.empty()) 2978 Stream.EmitRecord(WEAK_UNDECLARED_IDENTIFIERS, 2979 WeakUndeclaredIdentifiers); 2980 2981 // Write the record containing locally-scoped external definitions. 2982 if (!LocallyScopedExternalDecls.empty()) 2983 Stream.EmitRecord(LOCALLY_SCOPED_EXTERNAL_DECLS, 2984 LocallyScopedExternalDecls); 2985 2986 // Write the record containing ext_vector type names. 2987 if (!ExtVectorDecls.empty()) 2988 Stream.EmitRecord(EXT_VECTOR_DECLS, ExtVectorDecls); 2989 2990 // Write the record containing VTable uses information. 2991 if (!VTableUses.empty()) 2992 Stream.EmitRecord(VTABLE_USES, VTableUses); 2993 2994 // Write the record containing dynamic classes declarations. 2995 if (!DynamicClasses.empty()) 2996 Stream.EmitRecord(DYNAMIC_CLASSES, DynamicClasses); 2997 2998 // Write the record containing pending implicit instantiations. 2999 if (!PendingInstantiations.empty()) 3000 Stream.EmitRecord(PENDING_IMPLICIT_INSTANTIATIONS, PendingInstantiations); 3001 3002 // Write the record containing declaration references of Sema. 3003 if (!SemaDeclRefs.empty()) 3004 Stream.EmitRecord(SEMA_DECL_REFS, SemaDeclRefs); 3005 3006 // Write the record containing CUDA-specific declaration references. 3007 if (!CUDASpecialDeclRefs.empty()) 3008 Stream.EmitRecord(CUDA_SPECIAL_DECL_REFS, CUDASpecialDeclRefs); 3009 3010 // Write the delegating constructors. 3011 if (!DelegatingCtorDecls.empty()) 3012 Stream.EmitRecord(DELEGATING_CTORS, DelegatingCtorDecls); 3013 3014 // Write the known namespaces. 3015 if (!KnownNamespaces.empty()) 3016 Stream.EmitRecord(KNOWN_NAMESPACES, KnownNamespaces); 3017 3018 // Some simple statistics 3019 Record.clear(); 3020 Record.push_back(NumStatements); 3021 Record.push_back(NumMacros); 3022 Record.push_back(NumLexicalDeclContexts); 3023 Record.push_back(NumVisibleDeclContexts); 3024 Stream.EmitRecord(STATISTICS, Record); 3025 Stream.ExitBlock(); 3026} 3027 3028void ASTWriter::WriteASTChain(Sema &SemaRef, MemorizeStatCalls *StatCalls, 3029 StringRef isysroot) { 3030 using namespace llvm; 3031 3032 ASTContext &Context = SemaRef.Context; 3033 Preprocessor &PP = SemaRef.PP; 3034 3035 RecordData Record; 3036 Stream.EnterSubblock(AST_BLOCK_ID, 5); 3037 WriteMetadata(Context, isysroot, ""); 3038 if (StatCalls && isysroot.empty()) 3039 WriteStatCache(*StatCalls); 3040 // FIXME: Source manager block should only write new stuff, which could be 3041 // done by tracking the largest ID in the chain 3042 WriteSourceManagerBlock(Context.getSourceManager(), PP, isysroot); 3043 3044 // The special types are in the chained PCH. 3045 3046 // We don't start with the translation unit, but with its decls that 3047 // don't come from the chained PCH. 3048 const TranslationUnitDecl *TU = Context.getTranslationUnitDecl(); 3049 SmallVector<KindDeclIDPair, 64> NewGlobalDecls; 3050 for (DeclContext::decl_iterator I = TU->noload_decls_begin(), 3051 E = TU->noload_decls_end(); 3052 I != E; ++I) { 3053 if ((*I)->getPCHLevel() == 0) 3054 NewGlobalDecls.push_back(std::make_pair((*I)->getKind(), GetDeclRef(*I))); 3055 else if ((*I)->isChangedSinceDeserialization()) 3056 (void)GetDeclRef(*I); // Make sure it's written, but don't record it. 3057 } 3058 // We also need to write a lexical updates block for the TU. 3059 llvm::BitCodeAbbrev *Abv = new llvm::BitCodeAbbrev(); 3060 Abv->Add(llvm::BitCodeAbbrevOp(TU_UPDATE_LEXICAL)); 3061 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob)); 3062 unsigned TuUpdateLexicalAbbrev = Stream.EmitAbbrev(Abv); 3063 Record.clear(); 3064 Record.push_back(TU_UPDATE_LEXICAL); 3065 Stream.EmitRecordWithBlob(TuUpdateLexicalAbbrev, Record, 3066 data(NewGlobalDecls)); 3067 // And a visible updates block for the DeclContexts. 3068 Abv = new llvm::BitCodeAbbrev(); 3069 Abv->Add(llvm::BitCodeAbbrevOp(UPDATE_VISIBLE)); 3070 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6)); 3071 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Fixed, 32)); 3072 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob)); 3073 UpdateVisibleAbbrev = Stream.EmitAbbrev(Abv); 3074 WriteDeclContextVisibleUpdate(TU); 3075 3076 // Build a record containing all of the new tentative definitions in this 3077 // file, in TentativeDefinitions order. 3078 RecordData TentativeDefinitions; 3079 AddLazyVectorDecls(*this, SemaRef.TentativeDefinitions, TentativeDefinitions); 3080 3081 // Build a record containing all of the file scoped decls in this file. 3082 RecordData UnusedFileScopedDecls; 3083 AddLazyVectorDecls(*this, SemaRef.UnusedFileScopedDecls, 3084 UnusedFileScopedDecls); 3085 3086 // Build a record containing all of the delegating constructor decls in this 3087 // file. 3088 RecordData DelegatingCtorDecls; 3089 AddLazyVectorDecls(*this, SemaRef.DelegatingCtorDecls, DelegatingCtorDecls); 3090 3091 // We write the entire table, overwriting the tables from the chain. 3092 RecordData WeakUndeclaredIdentifiers; 3093 if (!SemaRef.WeakUndeclaredIdentifiers.empty()) { 3094 WeakUndeclaredIdentifiers.push_back( 3095 SemaRef.WeakUndeclaredIdentifiers.size()); 3096 for (llvm::DenseMap<IdentifierInfo*,Sema::WeakInfo>::iterator 3097 I = SemaRef.WeakUndeclaredIdentifiers.begin(), 3098 E = SemaRef.WeakUndeclaredIdentifiers.end(); I != E; ++I) { 3099 AddIdentifierRef(I->first, WeakUndeclaredIdentifiers); 3100 AddIdentifierRef(I->second.getAlias(), WeakUndeclaredIdentifiers); 3101 AddSourceLocation(I->second.getLocation(), WeakUndeclaredIdentifiers); 3102 WeakUndeclaredIdentifiers.push_back(I->second.getUsed()); 3103 } 3104 } 3105 3106 // Build a record containing all of the locally-scoped external 3107 // declarations in this header file. Generally, this record will be 3108 // empty. 3109 RecordData LocallyScopedExternalDecls; 3110 // FIXME: This is filling in the AST file in densemap order which is 3111 // nondeterminstic! 3112 for (llvm::DenseMap<DeclarationName, NamedDecl *>::iterator 3113 TD = SemaRef.LocallyScopedExternalDecls.begin(), 3114 TDEnd = SemaRef.LocallyScopedExternalDecls.end(); 3115 TD != TDEnd; ++TD) { 3116 if (TD->second->getPCHLevel() == 0) 3117 AddDeclRef(TD->second, LocallyScopedExternalDecls); 3118 } 3119 3120 // Build a record containing all of the ext_vector declarations. 3121 RecordData ExtVectorDecls; 3122 AddLazyVectorDecls(*this, SemaRef.ExtVectorDecls, ExtVectorDecls); 3123 3124 // Build a record containing all of the VTable uses information. 3125 // We write everything here, because it's too hard to determine whether 3126 // a use is new to this part. 3127 RecordData VTableUses; 3128 if (!SemaRef.VTableUses.empty()) { 3129 VTableUses.push_back(SemaRef.VTableUses.size()); 3130 for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I) { 3131 AddDeclRef(SemaRef.VTableUses[I].first, VTableUses); 3132 AddSourceLocation(SemaRef.VTableUses[I].second, VTableUses); 3133 VTableUses.push_back(SemaRef.VTablesUsed[SemaRef.VTableUses[I].first]); 3134 } 3135 } 3136 3137 // Build a record containing all of dynamic classes declarations. 3138 RecordData DynamicClasses; 3139 AddLazyVectorDecls(*this, SemaRef.DynamicClasses, DynamicClasses); 3140 3141 // Build a record containing all of pending implicit instantiations. 3142 RecordData PendingInstantiations; 3143 for (std::deque<Sema::PendingImplicitInstantiation>::iterator 3144 I = SemaRef.PendingInstantiations.begin(), 3145 N = SemaRef.PendingInstantiations.end(); I != N; ++I) { 3146 AddDeclRef(I->first, PendingInstantiations); 3147 AddSourceLocation(I->second, PendingInstantiations); 3148 } 3149 assert(SemaRef.PendingLocalImplicitInstantiations.empty() && 3150 "There are local ones at end of translation unit!"); 3151 3152 // Build a record containing some declaration references. 3153 // It's not worth the effort to avoid duplication here. 3154 RecordData SemaDeclRefs; 3155 if (SemaRef.StdNamespace || SemaRef.StdBadAlloc) { 3156 AddDeclRef(SemaRef.getStdNamespace(), SemaDeclRefs); 3157 AddDeclRef(SemaRef.getStdBadAlloc(), SemaDeclRefs); 3158 } 3159 3160 Stream.EnterSubblock(DECLTYPES_BLOCK_ID, NUM_ALLOWED_ABBREVS_SIZE); 3161 WriteDeclsBlockAbbrevs(); 3162 for (DeclsToRewriteTy::iterator 3163 I = DeclsToRewrite.begin(), E = DeclsToRewrite.end(); I != E; ++I) 3164 DeclTypesToEmit.push(const_cast<Decl*>(*I)); 3165 while (!DeclTypesToEmit.empty()) { 3166 DeclOrType DOT = DeclTypesToEmit.front(); 3167 DeclTypesToEmit.pop(); 3168 if (DOT.isType()) 3169 WriteType(DOT.getType()); 3170 else 3171 WriteDecl(Context, DOT.getDecl()); 3172 } 3173 Stream.ExitBlock(); 3174 3175 WritePreprocessor(PP); 3176 WriteSelectors(SemaRef); 3177 WriteReferencedSelectorsPool(SemaRef); 3178 WriteIdentifierTable(PP); 3179 WriteFPPragmaOptions(SemaRef.getFPOptions()); 3180 WriteOpenCLExtensions(SemaRef); 3181 3182 WriteTypeDeclOffsets(); 3183 // FIXME: For chained PCH only write the new mappings (we currently 3184 // write all of them again). 3185 WritePragmaDiagnosticMappings(Context.getDiagnostics()); 3186 3187 WriteCXXBaseSpecifiersOffsets(); 3188 3189 /// Build a record containing first declarations from a chained PCH and the 3190 /// most recent declarations in this AST that they point to. 3191 RecordData FirstLatestDeclIDs; 3192 for (FirstLatestDeclMap::iterator 3193 I = FirstLatestDecls.begin(), E = FirstLatestDecls.end(); I != E; ++I) { 3194 assert(I->first->getPCHLevel() > I->second->getPCHLevel() && 3195 "Expected first & second to be in different PCHs"); 3196 AddDeclRef(I->first, FirstLatestDeclIDs); 3197 AddDeclRef(I->second, FirstLatestDeclIDs); 3198 } 3199 if (!FirstLatestDeclIDs.empty()) 3200 Stream.EmitRecord(REDECLS_UPDATE_LATEST, FirstLatestDeclIDs); 3201 3202 // Write the record containing external, unnamed definitions. 3203 if (!ExternalDefinitions.empty()) 3204 Stream.EmitRecord(EXTERNAL_DEFINITIONS, ExternalDefinitions); 3205 3206 // Write the record containing tentative definitions. 3207 if (!TentativeDefinitions.empty()) 3208 Stream.EmitRecord(TENTATIVE_DEFINITIONS, TentativeDefinitions); 3209 3210 // Write the record containing unused file scoped decls. 3211 if (!UnusedFileScopedDecls.empty()) 3212 Stream.EmitRecord(UNUSED_FILESCOPED_DECLS, UnusedFileScopedDecls); 3213 3214 // Write the record containing weak undeclared identifiers. 3215 if (!WeakUndeclaredIdentifiers.empty()) 3216 Stream.EmitRecord(WEAK_UNDECLARED_IDENTIFIERS, 3217 WeakUndeclaredIdentifiers); 3218 3219 // Write the record containing locally-scoped external definitions. 3220 if (!LocallyScopedExternalDecls.empty()) 3221 Stream.EmitRecord(LOCALLY_SCOPED_EXTERNAL_DECLS, 3222 LocallyScopedExternalDecls); 3223 3224 // Write the record containing ext_vector type names. 3225 if (!ExtVectorDecls.empty()) 3226 Stream.EmitRecord(EXT_VECTOR_DECLS, ExtVectorDecls); 3227 3228 // Write the record containing VTable uses information. 3229 if (!VTableUses.empty()) 3230 Stream.EmitRecord(VTABLE_USES, VTableUses); 3231 3232 // Write the record containing dynamic classes declarations. 3233 if (!DynamicClasses.empty()) 3234 Stream.EmitRecord(DYNAMIC_CLASSES, DynamicClasses); 3235 3236 // Write the record containing pending implicit instantiations. 3237 if (!PendingInstantiations.empty()) 3238 Stream.EmitRecord(PENDING_IMPLICIT_INSTANTIATIONS, PendingInstantiations); 3239 3240 // Write the record containing declaration references of Sema. 3241 if (!SemaDeclRefs.empty()) 3242 Stream.EmitRecord(SEMA_DECL_REFS, SemaDeclRefs); 3243 3244 // Write the delegating constructors. 3245 if (!DelegatingCtorDecls.empty()) 3246 Stream.EmitRecord(DELEGATING_CTORS, DelegatingCtorDecls); 3247 3248 // Write the updates to DeclContexts. 3249 for (llvm::SmallPtrSet<const DeclContext *, 16>::iterator 3250 I = UpdatedDeclContexts.begin(), 3251 E = UpdatedDeclContexts.end(); 3252 I != E; ++I) 3253 WriteDeclContextVisibleUpdate(*I); 3254 3255 WriteDeclUpdatesBlocks(); 3256 3257 Record.clear(); 3258 Record.push_back(NumStatements); 3259 Record.push_back(NumMacros); 3260 Record.push_back(NumLexicalDeclContexts); 3261 Record.push_back(NumVisibleDeclContexts); 3262 WriteDeclReplacementsBlock(); 3263 Stream.EmitRecord(STATISTICS, Record); 3264 Stream.ExitBlock(); 3265} 3266 3267void ASTWriter::WriteDeclUpdatesBlocks() { 3268 if (DeclUpdates.empty()) 3269 return; 3270 3271 RecordData OffsetsRecord; 3272 Stream.EnterSubblock(DECL_UPDATES_BLOCK_ID, NUM_ALLOWED_ABBREVS_SIZE); 3273 for (DeclUpdateMap::iterator 3274 I = DeclUpdates.begin(), E = DeclUpdates.end(); I != E; ++I) { 3275 const Decl *D = I->first; 3276 UpdateRecord &URec = I->second; 3277 3278 if (DeclsToRewrite.count(D)) 3279 continue; // The decl will be written completely,no need to store updates. 3280 3281 uint64_t Offset = Stream.GetCurrentBitNo(); 3282 Stream.EmitRecord(DECL_UPDATES, URec); 3283 3284 OffsetsRecord.push_back(GetDeclRef(D)); 3285 OffsetsRecord.push_back(Offset); 3286 } 3287 Stream.ExitBlock(); 3288 Stream.EmitRecord(DECL_UPDATE_OFFSETS, OffsetsRecord); 3289} 3290 3291void ASTWriter::WriteDeclReplacementsBlock() { 3292 if (ReplacedDecls.empty()) 3293 return; 3294 3295 RecordData Record; 3296 for (SmallVector<std::pair<DeclID, uint64_t>, 16>::iterator 3297 I = ReplacedDecls.begin(), E = ReplacedDecls.end(); I != E; ++I) { 3298 Record.push_back(I->first); 3299 Record.push_back(I->second); 3300 } 3301 Stream.EmitRecord(DECL_REPLACEMENTS, Record); 3302} 3303 3304void ASTWriter::AddSourceLocation(SourceLocation Loc, RecordDataImpl &Record) { 3305 Record.push_back(Loc.getRawEncoding()); 3306} 3307 3308void ASTWriter::AddSourceRange(SourceRange Range, RecordDataImpl &Record) { 3309 AddSourceLocation(Range.getBegin(), Record); 3310 AddSourceLocation(Range.getEnd(), Record); 3311} 3312 3313void ASTWriter::AddAPInt(const llvm::APInt &Value, RecordDataImpl &Record) { 3314 Record.push_back(Value.getBitWidth()); 3315 const uint64_t *Words = Value.getRawData(); 3316 Record.append(Words, Words + Value.getNumWords()); 3317} 3318 3319void ASTWriter::AddAPSInt(const llvm::APSInt &Value, RecordDataImpl &Record) { 3320 Record.push_back(Value.isUnsigned()); 3321 AddAPInt(Value, Record); 3322} 3323 3324void ASTWriter::AddAPFloat(const llvm::APFloat &Value, RecordDataImpl &Record) { 3325 AddAPInt(Value.bitcastToAPInt(), Record); 3326} 3327 3328void ASTWriter::AddIdentifierRef(const IdentifierInfo *II, RecordDataImpl &Record) { 3329 Record.push_back(getIdentifierRef(II)); 3330} 3331 3332IdentID ASTWriter::getIdentifierRef(const IdentifierInfo *II) { 3333 if (II == 0) 3334 return 0; 3335 3336 IdentID &ID = IdentifierIDs[II]; 3337 if (ID == 0) 3338 ID = NextIdentID++; 3339 return ID; 3340} 3341 3342MacroID ASTWriter::getMacroDefinitionID(MacroDefinition *MD) { 3343 if (MD == 0) 3344 return 0; 3345 3346 MacroID &ID = MacroDefinitions[MD]; 3347 if (ID == 0) 3348 ID = NextMacroID++; 3349 return ID; 3350} 3351 3352void ASTWriter::AddSelectorRef(const Selector SelRef, RecordDataImpl &Record) { 3353 Record.push_back(getSelectorRef(SelRef)); 3354} 3355 3356SelectorID ASTWriter::getSelectorRef(Selector Sel) { 3357 if (Sel.getAsOpaquePtr() == 0) { 3358 return 0; 3359 } 3360 3361 SelectorID &SID = SelectorIDs[Sel]; 3362 if (SID == 0 && Chain) { 3363 // This might trigger a ReadSelector callback, which will set the ID for 3364 // this selector. 3365 Chain->LoadSelector(Sel); 3366 } 3367 if (SID == 0) { 3368 SID = NextSelectorID++; 3369 } 3370 return SID; 3371} 3372 3373void ASTWriter::AddCXXTemporary(const CXXTemporary *Temp, RecordDataImpl &Record) { 3374 AddDeclRef(Temp->getDestructor(), Record); 3375} 3376 3377void ASTWriter::AddCXXBaseSpecifiersRef(CXXBaseSpecifier const *Bases, 3378 CXXBaseSpecifier const *BasesEnd, 3379 RecordDataImpl &Record) { 3380 assert(Bases != BasesEnd && "Empty base-specifier sets are not recorded"); 3381 CXXBaseSpecifiersToWrite.push_back( 3382 QueuedCXXBaseSpecifiers(NextCXXBaseSpecifiersID, 3383 Bases, BasesEnd)); 3384 Record.push_back(NextCXXBaseSpecifiersID++); 3385} 3386 3387void ASTWriter::AddTemplateArgumentLocInfo(TemplateArgument::ArgKind Kind, 3388 const TemplateArgumentLocInfo &Arg, 3389 RecordDataImpl &Record) { 3390 switch (Kind) { 3391 case TemplateArgument::Expression: 3392 AddStmt(Arg.getAsExpr()); 3393 break; 3394 case TemplateArgument::Type: 3395 AddTypeSourceInfo(Arg.getAsTypeSourceInfo(), Record); 3396 break; 3397 case TemplateArgument::Template: 3398 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc(), Record); 3399 AddSourceLocation(Arg.getTemplateNameLoc(), Record); 3400 break; 3401 case TemplateArgument::TemplateExpansion: 3402 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc(), Record); 3403 AddSourceLocation(Arg.getTemplateNameLoc(), Record); 3404 AddSourceLocation(Arg.getTemplateEllipsisLoc(), Record); 3405 break; 3406 case TemplateArgument::Null: 3407 case TemplateArgument::Integral: 3408 case TemplateArgument::Declaration: 3409 case TemplateArgument::Pack: 3410 break; 3411 } 3412} 3413 3414void ASTWriter::AddTemplateArgumentLoc(const TemplateArgumentLoc &Arg, 3415 RecordDataImpl &Record) { 3416 AddTemplateArgument(Arg.getArgument(), Record); 3417 3418 if (Arg.getArgument().getKind() == TemplateArgument::Expression) { 3419 bool InfoHasSameExpr 3420 = Arg.getArgument().getAsExpr() == Arg.getLocInfo().getAsExpr(); 3421 Record.push_back(InfoHasSameExpr); 3422 if (InfoHasSameExpr) 3423 return; // Avoid storing the same expr twice. 3424 } 3425 AddTemplateArgumentLocInfo(Arg.getArgument().getKind(), Arg.getLocInfo(), 3426 Record); 3427} 3428 3429void ASTWriter::AddTypeSourceInfo(TypeSourceInfo *TInfo, 3430 RecordDataImpl &Record) { 3431 if (TInfo == 0) { 3432 AddTypeRef(QualType(), Record); 3433 return; 3434 } 3435 3436 AddTypeLoc(TInfo->getTypeLoc(), Record); 3437} 3438 3439void ASTWriter::AddTypeLoc(TypeLoc TL, RecordDataImpl &Record) { 3440 AddTypeRef(TL.getType(), Record); 3441 3442 TypeLocWriter TLW(*this, Record); 3443 for (; !TL.isNull(); TL = TL.getNextTypeLoc()) 3444 TLW.Visit(TL); 3445} 3446 3447void ASTWriter::AddTypeRef(QualType T, RecordDataImpl &Record) { 3448 Record.push_back(GetOrCreateTypeID(T)); 3449} 3450 3451TypeID ASTWriter::GetOrCreateTypeID(QualType T) { 3452 return MakeTypeID(T, 3453 std::bind1st(std::mem_fun(&ASTWriter::GetOrCreateTypeIdx), this)); 3454} 3455 3456TypeID ASTWriter::getTypeID(QualType T) const { 3457 return MakeTypeID(T, 3458 std::bind1st(std::mem_fun(&ASTWriter::getTypeIdx), this)); 3459} 3460 3461TypeIdx ASTWriter::GetOrCreateTypeIdx(QualType T) { 3462 if (T.isNull()) 3463 return TypeIdx(); 3464 assert(!T.getLocalFastQualifiers()); 3465 3466 TypeIdx &Idx = TypeIdxs[T]; 3467 if (Idx.getIndex() == 0) { 3468 // We haven't seen this type before. Assign it a new ID and put it 3469 // into the queue of types to emit. 3470 Idx = TypeIdx(NextTypeID++); 3471 DeclTypesToEmit.push(T); 3472 } 3473 return Idx; 3474} 3475 3476TypeIdx ASTWriter::getTypeIdx(QualType T) const { 3477 if (T.isNull()) 3478 return TypeIdx(); 3479 assert(!T.getLocalFastQualifiers()); 3480 3481 TypeIdxMap::const_iterator I = TypeIdxs.find(T); 3482 assert(I != TypeIdxs.end() && "Type not emitted!"); 3483 return I->second; 3484} 3485 3486void ASTWriter::AddDeclRef(const Decl *D, RecordDataImpl &Record) { 3487 Record.push_back(GetDeclRef(D)); 3488} 3489 3490DeclID ASTWriter::GetDeclRef(const Decl *D) { 3491 if (D == 0) { 3492 return 0; 3493 } 3494 assert(!(reinterpret_cast<uintptr_t>(D) & 0x01) && "Invalid decl pointer"); 3495 DeclID &ID = DeclIDs[D]; 3496 if (ID == 0) { 3497 // We haven't seen this declaration before. Give it a new ID and 3498 // enqueue it in the list of declarations to emit. 3499 ID = NextDeclID++; 3500 DeclTypesToEmit.push(const_cast<Decl *>(D)); 3501 } else if (ID < FirstDeclID && D->isChangedSinceDeserialization()) { 3502 // We don't add it to the replacement collection here, because we don't 3503 // have the offset yet. 3504 DeclTypesToEmit.push(const_cast<Decl *>(D)); 3505 // Reset the flag, so that we don't add this decl multiple times. 3506 const_cast<Decl *>(D)->setChangedSinceDeserialization(false); 3507 } 3508 3509 return ID; 3510} 3511 3512DeclID ASTWriter::getDeclID(const Decl *D) { 3513 if (D == 0) 3514 return 0; 3515 3516 assert(DeclIDs.find(D) != DeclIDs.end() && "Declaration not emitted!"); 3517 return DeclIDs[D]; 3518} 3519 3520void ASTWriter::AddDeclarationName(DeclarationName Name, RecordDataImpl &Record) { 3521 // FIXME: Emit a stable enum for NameKind. 0 = Identifier etc. 3522 Record.push_back(Name.getNameKind()); 3523 switch (Name.getNameKind()) { 3524 case DeclarationName::Identifier: 3525 AddIdentifierRef(Name.getAsIdentifierInfo(), Record); 3526 break; 3527 3528 case DeclarationName::ObjCZeroArgSelector: 3529 case DeclarationName::ObjCOneArgSelector: 3530 case DeclarationName::ObjCMultiArgSelector: 3531 AddSelectorRef(Name.getObjCSelector(), Record); 3532 break; 3533 3534 case DeclarationName::CXXConstructorName: 3535 case DeclarationName::CXXDestructorName: 3536 case DeclarationName::CXXConversionFunctionName: 3537 AddTypeRef(Name.getCXXNameType(), Record); 3538 break; 3539 3540 case DeclarationName::CXXOperatorName: 3541 Record.push_back(Name.getCXXOverloadedOperator()); 3542 break; 3543 3544 case DeclarationName::CXXLiteralOperatorName: 3545 AddIdentifierRef(Name.getCXXLiteralIdentifier(), Record); 3546 break; 3547 3548 case DeclarationName::CXXUsingDirective: 3549 // No extra data to emit 3550 break; 3551 } 3552} 3553 3554void ASTWriter::AddDeclarationNameLoc(const DeclarationNameLoc &DNLoc, 3555 DeclarationName Name, RecordDataImpl &Record) { 3556 switch (Name.getNameKind()) { 3557 case DeclarationName::CXXConstructorName: 3558 case DeclarationName::CXXDestructorName: 3559 case DeclarationName::CXXConversionFunctionName: 3560 AddTypeSourceInfo(DNLoc.NamedType.TInfo, Record); 3561 break; 3562 3563 case DeclarationName::CXXOperatorName: 3564 AddSourceLocation( 3565 SourceLocation::getFromRawEncoding(DNLoc.CXXOperatorName.BeginOpNameLoc), 3566 Record); 3567 AddSourceLocation( 3568 SourceLocation::getFromRawEncoding(DNLoc.CXXOperatorName.EndOpNameLoc), 3569 Record); 3570 break; 3571 3572 case DeclarationName::CXXLiteralOperatorName: 3573 AddSourceLocation( 3574 SourceLocation::getFromRawEncoding(DNLoc.CXXLiteralOperatorName.OpNameLoc), 3575 Record); 3576 break; 3577 3578 case DeclarationName::Identifier: 3579 case DeclarationName::ObjCZeroArgSelector: 3580 case DeclarationName::ObjCOneArgSelector: 3581 case DeclarationName::ObjCMultiArgSelector: 3582 case DeclarationName::CXXUsingDirective: 3583 break; 3584 } 3585} 3586 3587void ASTWriter::AddDeclarationNameInfo(const DeclarationNameInfo &NameInfo, 3588 RecordDataImpl &Record) { 3589 AddDeclarationName(NameInfo.getName(), Record); 3590 AddSourceLocation(NameInfo.getLoc(), Record); 3591 AddDeclarationNameLoc(NameInfo.getInfo(), NameInfo.getName(), Record); 3592} 3593 3594void ASTWriter::AddQualifierInfo(const QualifierInfo &Info, 3595 RecordDataImpl &Record) { 3596 AddNestedNameSpecifierLoc(Info.QualifierLoc, Record); 3597 Record.push_back(Info.NumTemplParamLists); 3598 for (unsigned i=0, e=Info.NumTemplParamLists; i != e; ++i) 3599 AddTemplateParameterList(Info.TemplParamLists[i], Record); 3600} 3601 3602void ASTWriter::AddNestedNameSpecifier(NestedNameSpecifier *NNS, 3603 RecordDataImpl &Record) { 3604 // Nested name specifiers usually aren't too long. I think that 8 would 3605 // typically accommodate the vast majority. 3606 SmallVector<NestedNameSpecifier *, 8> NestedNames; 3607 3608 // Push each of the NNS's onto a stack for serialization in reverse order. 3609 while (NNS) { 3610 NestedNames.push_back(NNS); 3611 NNS = NNS->getPrefix(); 3612 } 3613 3614 Record.push_back(NestedNames.size()); 3615 while(!NestedNames.empty()) { 3616 NNS = NestedNames.pop_back_val(); 3617 NestedNameSpecifier::SpecifierKind Kind = NNS->getKind(); 3618 Record.push_back(Kind); 3619 switch (Kind) { 3620 case NestedNameSpecifier::Identifier: 3621 AddIdentifierRef(NNS->getAsIdentifier(), Record); 3622 break; 3623 3624 case NestedNameSpecifier::Namespace: 3625 AddDeclRef(NNS->getAsNamespace(), Record); 3626 break; 3627 3628 case NestedNameSpecifier::NamespaceAlias: 3629 AddDeclRef(NNS->getAsNamespaceAlias(), Record); 3630 break; 3631 3632 case NestedNameSpecifier::TypeSpec: 3633 case NestedNameSpecifier::TypeSpecWithTemplate: 3634 AddTypeRef(QualType(NNS->getAsType(), 0), Record); 3635 Record.push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate); 3636 break; 3637 3638 case NestedNameSpecifier::Global: 3639 // Don't need to write an associated value. 3640 break; 3641 } 3642 } 3643} 3644 3645void ASTWriter::AddNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS, 3646 RecordDataImpl &Record) { 3647 // Nested name specifiers usually aren't too long. I think that 8 would 3648 // typically accommodate the vast majority. 3649 SmallVector<NestedNameSpecifierLoc , 8> NestedNames; 3650 3651 // Push each of the nested-name-specifiers's onto a stack for 3652 // serialization in reverse order. 3653 while (NNS) { 3654 NestedNames.push_back(NNS); 3655 NNS = NNS.getPrefix(); 3656 } 3657 3658 Record.push_back(NestedNames.size()); 3659 while(!NestedNames.empty()) { 3660 NNS = NestedNames.pop_back_val(); 3661 NestedNameSpecifier::SpecifierKind Kind 3662 = NNS.getNestedNameSpecifier()->getKind(); 3663 Record.push_back(Kind); 3664 switch (Kind) { 3665 case NestedNameSpecifier::Identifier: 3666 AddIdentifierRef(NNS.getNestedNameSpecifier()->getAsIdentifier(), Record); 3667 AddSourceRange(NNS.getLocalSourceRange(), Record); 3668 break; 3669 3670 case NestedNameSpecifier::Namespace: 3671 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespace(), Record); 3672 AddSourceRange(NNS.getLocalSourceRange(), Record); 3673 break; 3674 3675 case NestedNameSpecifier::NamespaceAlias: 3676 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespaceAlias(), Record); 3677 AddSourceRange(NNS.getLocalSourceRange(), Record); 3678 break; 3679 3680 case NestedNameSpecifier::TypeSpec: 3681 case NestedNameSpecifier::TypeSpecWithTemplate: 3682 Record.push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate); 3683 AddTypeLoc(NNS.getTypeLoc(), Record); 3684 AddSourceLocation(NNS.getLocalSourceRange().getEnd(), Record); 3685 break; 3686 3687 case NestedNameSpecifier::Global: 3688 AddSourceLocation(NNS.getLocalSourceRange().getEnd(), Record); 3689 break; 3690 } 3691 } 3692} 3693 3694void ASTWriter::AddTemplateName(TemplateName Name, RecordDataImpl &Record) { 3695 TemplateName::NameKind Kind = Name.getKind(); 3696 Record.push_back(Kind); 3697 switch (Kind) { 3698 case TemplateName::Template: 3699 AddDeclRef(Name.getAsTemplateDecl(), Record); 3700 break; 3701 3702 case TemplateName::OverloadedTemplate: { 3703 OverloadedTemplateStorage *OvT = Name.getAsOverloadedTemplate(); 3704 Record.push_back(OvT->size()); 3705 for (OverloadedTemplateStorage::iterator I = OvT->begin(), E = OvT->end(); 3706 I != E; ++I) 3707 AddDeclRef(*I, Record); 3708 break; 3709 } 3710 3711 case TemplateName::QualifiedTemplate: { 3712 QualifiedTemplateName *QualT = Name.getAsQualifiedTemplateName(); 3713 AddNestedNameSpecifier(QualT->getQualifier(), Record); 3714 Record.push_back(QualT->hasTemplateKeyword()); 3715 AddDeclRef(QualT->getTemplateDecl(), Record); 3716 break; 3717 } 3718 3719 case TemplateName::DependentTemplate: { 3720 DependentTemplateName *DepT = Name.getAsDependentTemplateName(); 3721 AddNestedNameSpecifier(DepT->getQualifier(), Record); 3722 Record.push_back(DepT->isIdentifier()); 3723 if (DepT->isIdentifier()) 3724 AddIdentifierRef(DepT->getIdentifier(), Record); 3725 else 3726 Record.push_back(DepT->getOperator()); 3727 break; 3728 } 3729 3730 case TemplateName::SubstTemplateTemplateParm: { 3731 SubstTemplateTemplateParmStorage *subst 3732 = Name.getAsSubstTemplateTemplateParm(); 3733 AddDeclRef(subst->getParameter(), Record); 3734 AddTemplateName(subst->getReplacement(), Record); 3735 break; 3736 } 3737 3738 case TemplateName::SubstTemplateTemplateParmPack: { 3739 SubstTemplateTemplateParmPackStorage *SubstPack 3740 = Name.getAsSubstTemplateTemplateParmPack(); 3741 AddDeclRef(SubstPack->getParameterPack(), Record); 3742 AddTemplateArgument(SubstPack->getArgumentPack(), Record); 3743 break; 3744 } 3745 } 3746} 3747 3748void ASTWriter::AddTemplateArgument(const TemplateArgument &Arg, 3749 RecordDataImpl &Record) { 3750 Record.push_back(Arg.getKind()); 3751 switch (Arg.getKind()) { 3752 case TemplateArgument::Null: 3753 break; 3754 case TemplateArgument::Type: 3755 AddTypeRef(Arg.getAsType(), Record); 3756 break; 3757 case TemplateArgument::Declaration: 3758 AddDeclRef(Arg.getAsDecl(), Record); 3759 break; 3760 case TemplateArgument::Integral: 3761 AddAPSInt(*Arg.getAsIntegral(), Record); 3762 AddTypeRef(Arg.getIntegralType(), Record); 3763 break; 3764 case TemplateArgument::Template: 3765 AddTemplateName(Arg.getAsTemplateOrTemplatePattern(), Record); 3766 break; 3767 case TemplateArgument::TemplateExpansion: 3768 AddTemplateName(Arg.getAsTemplateOrTemplatePattern(), Record); 3769 if (llvm::Optional<unsigned> NumExpansions = Arg.getNumTemplateExpansions()) 3770 Record.push_back(*NumExpansions + 1); 3771 else 3772 Record.push_back(0); 3773 break; 3774 case TemplateArgument::Expression: 3775 AddStmt(Arg.getAsExpr()); 3776 break; 3777 case TemplateArgument::Pack: 3778 Record.push_back(Arg.pack_size()); 3779 for (TemplateArgument::pack_iterator I=Arg.pack_begin(), E=Arg.pack_end(); 3780 I != E; ++I) 3781 AddTemplateArgument(*I, Record); 3782 break; 3783 } 3784} 3785 3786void 3787ASTWriter::AddTemplateParameterList(const TemplateParameterList *TemplateParams, 3788 RecordDataImpl &Record) { 3789 assert(TemplateParams && "No TemplateParams!"); 3790 AddSourceLocation(TemplateParams->getTemplateLoc(), Record); 3791 AddSourceLocation(TemplateParams->getLAngleLoc(), Record); 3792 AddSourceLocation(TemplateParams->getRAngleLoc(), Record); 3793 Record.push_back(TemplateParams->size()); 3794 for (TemplateParameterList::const_iterator 3795 P = TemplateParams->begin(), PEnd = TemplateParams->end(); 3796 P != PEnd; ++P) 3797 AddDeclRef(*P, Record); 3798} 3799 3800/// \brief Emit a template argument list. 3801void 3802ASTWriter::AddTemplateArgumentList(const TemplateArgumentList *TemplateArgs, 3803 RecordDataImpl &Record) { 3804 assert(TemplateArgs && "No TemplateArgs!"); 3805 Record.push_back(TemplateArgs->size()); 3806 for (int i=0, e = TemplateArgs->size(); i != e; ++i) 3807 AddTemplateArgument(TemplateArgs->get(i), Record); 3808} 3809 3810 3811void 3812ASTWriter::AddUnresolvedSet(const UnresolvedSetImpl &Set, RecordDataImpl &Record) { 3813 Record.push_back(Set.size()); 3814 for (UnresolvedSetImpl::const_iterator 3815 I = Set.begin(), E = Set.end(); I != E; ++I) { 3816 AddDeclRef(I.getDecl(), Record); 3817 Record.push_back(I.getAccess()); 3818 } 3819} 3820 3821void ASTWriter::AddCXXBaseSpecifier(const CXXBaseSpecifier &Base, 3822 RecordDataImpl &Record) { 3823 Record.push_back(Base.isVirtual()); 3824 Record.push_back(Base.isBaseOfClass()); 3825 Record.push_back(Base.getAccessSpecifierAsWritten()); 3826 Record.push_back(Base.getInheritConstructors()); 3827 AddTypeSourceInfo(Base.getTypeSourceInfo(), Record); 3828 AddSourceRange(Base.getSourceRange(), Record); 3829 AddSourceLocation(Base.isPackExpansion()? Base.getEllipsisLoc() 3830 : SourceLocation(), 3831 Record); 3832} 3833 3834void ASTWriter::FlushCXXBaseSpecifiers() { 3835 RecordData Record; 3836 for (unsigned I = 0, N = CXXBaseSpecifiersToWrite.size(); I != N; ++I) { 3837 Record.clear(); 3838 3839 // Record the offset of this base-specifier set. 3840 unsigned Index = CXXBaseSpecifiersToWrite[I].ID - FirstCXXBaseSpecifiersID; 3841 if (Index == CXXBaseSpecifiersOffsets.size()) 3842 CXXBaseSpecifiersOffsets.push_back(Stream.GetCurrentBitNo()); 3843 else { 3844 if (Index > CXXBaseSpecifiersOffsets.size()) 3845 CXXBaseSpecifiersOffsets.resize(Index + 1); 3846 CXXBaseSpecifiersOffsets[Index] = Stream.GetCurrentBitNo(); 3847 } 3848 3849 const CXXBaseSpecifier *B = CXXBaseSpecifiersToWrite[I].Bases, 3850 *BEnd = CXXBaseSpecifiersToWrite[I].BasesEnd; 3851 Record.push_back(BEnd - B); 3852 for (; B != BEnd; ++B) 3853 AddCXXBaseSpecifier(*B, Record); 3854 Stream.EmitRecord(serialization::DECL_CXX_BASE_SPECIFIERS, Record); 3855 3856 // Flush any expressions that were written as part of the base specifiers. 3857 FlushStmts(); 3858 } 3859 3860 CXXBaseSpecifiersToWrite.clear(); 3861} 3862 3863void ASTWriter::AddCXXCtorInitializers( 3864 const CXXCtorInitializer * const *CtorInitializers, 3865 unsigned NumCtorInitializers, 3866 RecordDataImpl &Record) { 3867 Record.push_back(NumCtorInitializers); 3868 for (unsigned i=0; i != NumCtorInitializers; ++i) { 3869 const CXXCtorInitializer *Init = CtorInitializers[i]; 3870 3871 if (Init->isBaseInitializer()) { 3872 Record.push_back(CTOR_INITIALIZER_BASE); 3873 AddTypeSourceInfo(Init->getBaseClassInfo(), Record); 3874 Record.push_back(Init->isBaseVirtual()); 3875 } else if (Init->isDelegatingInitializer()) { 3876 Record.push_back(CTOR_INITIALIZER_DELEGATING); 3877 AddDeclRef(Init->getTargetConstructor(), Record); 3878 } else if (Init->isMemberInitializer()){ 3879 Record.push_back(CTOR_INITIALIZER_MEMBER); 3880 AddDeclRef(Init->getMember(), Record); 3881 } else { 3882 Record.push_back(CTOR_INITIALIZER_INDIRECT_MEMBER); 3883 AddDeclRef(Init->getIndirectMember(), Record); 3884 } 3885 3886 AddSourceLocation(Init->getMemberLocation(), Record); 3887 AddStmt(Init->getInit()); 3888 AddSourceLocation(Init->getLParenLoc(), Record); 3889 AddSourceLocation(Init->getRParenLoc(), Record); 3890 Record.push_back(Init->isWritten()); 3891 if (Init->isWritten()) { 3892 Record.push_back(Init->getSourceOrder()); 3893 } else { 3894 Record.push_back(Init->getNumArrayIndices()); 3895 for (unsigned i=0, e=Init->getNumArrayIndices(); i != e; ++i) 3896 AddDeclRef(Init->getArrayIndex(i), Record); 3897 } 3898 } 3899} 3900 3901void ASTWriter::AddCXXDefinitionData(const CXXRecordDecl *D, RecordDataImpl &Record) { 3902 assert(D->DefinitionData); 3903 struct CXXRecordDecl::DefinitionData &Data = *D->DefinitionData; 3904 Record.push_back(Data.UserDeclaredConstructor); 3905 Record.push_back(Data.UserDeclaredCopyConstructor); 3906 Record.push_back(Data.UserDeclaredCopyAssignment); 3907 Record.push_back(Data.UserDeclaredDestructor); 3908 Record.push_back(Data.Aggregate); 3909 Record.push_back(Data.PlainOldData); 3910 Record.push_back(Data.Empty); 3911 Record.push_back(Data.Polymorphic); 3912 Record.push_back(Data.Abstract); 3913 Record.push_back(Data.IsStandardLayout); 3914 Record.push_back(Data.HasNoNonEmptyBases); 3915 Record.push_back(Data.HasPrivateFields); 3916 Record.push_back(Data.HasProtectedFields); 3917 Record.push_back(Data.HasPublicFields); 3918 Record.push_back(Data.HasMutableFields); 3919 Record.push_back(Data.HasTrivialDefaultConstructor); 3920 Record.push_back(Data.HasConstExprNonCopyMoveConstructor); 3921 Record.push_back(Data.HasTrivialCopyConstructor); 3922 Record.push_back(Data.HasTrivialMoveConstructor); 3923 Record.push_back(Data.HasTrivialCopyAssignment); 3924 Record.push_back(Data.HasTrivialMoveAssignment); 3925 Record.push_back(Data.HasTrivialDestructor); 3926 Record.push_back(Data.HasNonLiteralTypeFieldsOrBases); 3927 Record.push_back(Data.ComputedVisibleConversions); 3928 Record.push_back(Data.UserProvidedDefaultConstructor); 3929 Record.push_back(Data.DeclaredDefaultConstructor); 3930 Record.push_back(Data.DeclaredCopyConstructor); 3931 Record.push_back(Data.DeclaredCopyAssignment); 3932 Record.push_back(Data.DeclaredDestructor); 3933 3934 Record.push_back(Data.NumBases); 3935 if (Data.NumBases > 0) 3936 AddCXXBaseSpecifiersRef(Data.getBases(), Data.getBases() + Data.NumBases, 3937 Record); 3938 3939 // FIXME: Make VBases lazily computed when needed to avoid storing them. 3940 Record.push_back(Data.NumVBases); 3941 if (Data.NumVBases > 0) 3942 AddCXXBaseSpecifiersRef(Data.getVBases(), Data.getVBases() + Data.NumVBases, 3943 Record); 3944 3945 AddUnresolvedSet(Data.Conversions, Record); 3946 AddUnresolvedSet(Data.VisibleConversions, Record); 3947 // Data.Definition is the owning decl, no need to write it. 3948 AddDeclRef(Data.FirstFriend, Record); 3949} 3950 3951void ASTWriter::ReaderInitialized(ASTReader *Reader) { 3952 assert(Reader && "Cannot remove chain"); 3953 assert(!Chain && "Cannot replace chain"); 3954 assert(FirstDeclID == NextDeclID && 3955 FirstTypeID == NextTypeID && 3956 FirstIdentID == NextIdentID && 3957 FirstSelectorID == NextSelectorID && 3958 FirstMacroID == NextMacroID && 3959 FirstCXXBaseSpecifiersID == NextCXXBaseSpecifiersID && 3960 "Setting chain after writing has started."); 3961 3962 Chain = Reader; 3963 3964 FirstDeclID += Chain->getTotalNumDecls(); 3965 FirstTypeID += Chain->getTotalNumTypes(); 3966 FirstIdentID += Chain->getTotalNumIdentifiers(); 3967 FirstSelectorID += Chain->getTotalNumSelectors(); 3968 FirstMacroID += Chain->getTotalNumMacroDefinitions(); 3969 FirstCXXBaseSpecifiersID += Chain->getTotalNumCXXBaseSpecifiers(); 3970 NextDeclID = FirstDeclID; 3971 NextTypeID = FirstTypeID; 3972 NextIdentID = FirstIdentID; 3973 NextSelectorID = FirstSelectorID; 3974 NextMacroID = FirstMacroID; 3975 NextCXXBaseSpecifiersID = FirstCXXBaseSpecifiersID; 3976} 3977 3978void ASTWriter::IdentifierRead(IdentID ID, IdentifierInfo *II) { 3979 IdentifierIDs[II] = ID; 3980 if (II->hasMacroDefinition()) 3981 DeserializedMacroNames.push_back(II); 3982} 3983 3984void ASTWriter::TypeRead(TypeIdx Idx, QualType T) { 3985 // Always take the highest-numbered type index. This copes with an interesting 3986 // case for chained AST writing where we schedule writing the type and then, 3987 // later, deserialize the type from another AST. In this case, we want to 3988 // keep the higher-numbered entry so that we can properly write it out to 3989 // the AST file. 3990 TypeIdx &StoredIdx = TypeIdxs[T]; 3991 if (Idx.getIndex() >= StoredIdx.getIndex()) 3992 StoredIdx = Idx; 3993} 3994 3995void ASTWriter::DeclRead(DeclID ID, const Decl *D) { 3996 DeclIDs[D] = ID; 3997} 3998 3999void ASTWriter::SelectorRead(SelectorID ID, Selector S) { 4000 SelectorIDs[S] = ID; 4001} 4002 4003void ASTWriter::MacroDefinitionRead(serialization::MacroID ID, 4004 MacroDefinition *MD) { 4005 MacroDefinitions[MD] = ID; 4006} 4007 4008void ASTWriter::CompletedTagDefinition(const TagDecl *D) { 4009 assert(D->isDefinition()); 4010 if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(D)) { 4011 // We are interested when a PCH decl is modified. 4012 if (RD->getPCHLevel() > 0) { 4013 // A forward reference was mutated into a definition. Rewrite it. 4014 // FIXME: This happens during template instantiation, should we 4015 // have created a new definition decl instead ? 4016 RewriteDecl(RD); 4017 } 4018 4019 for (CXXRecordDecl::redecl_iterator 4020 I = RD->redecls_begin(), E = RD->redecls_end(); I != E; ++I) { 4021 CXXRecordDecl *Redecl = cast<CXXRecordDecl>(*I); 4022 if (Redecl == RD) 4023 continue; 4024 4025 // We are interested when a PCH decl is modified. 4026 if (Redecl->getPCHLevel() > 0) { 4027 UpdateRecord &Record = DeclUpdates[Redecl]; 4028 Record.push_back(UPD_CXX_SET_DEFINITIONDATA); 4029 assert(Redecl->DefinitionData); 4030 assert(Redecl->DefinitionData->Definition == D); 4031 AddDeclRef(D, Record); // the DefinitionDecl 4032 } 4033 } 4034 } 4035} 4036void ASTWriter::AddedVisibleDecl(const DeclContext *DC, const Decl *D) { 4037 // TU and namespaces are handled elsewhere. 4038 if (isa<TranslationUnitDecl>(DC) || isa<NamespaceDecl>(DC)) 4039 return; 4040 4041 if (!(D->getPCHLevel() == 0 && cast<Decl>(DC)->getPCHLevel() > 0)) 4042 return; // Not a source decl added to a DeclContext from PCH. 4043 4044 AddUpdatedDeclContext(DC); 4045} 4046 4047void ASTWriter::AddedCXXImplicitMember(const CXXRecordDecl *RD, const Decl *D) { 4048 assert(D->isImplicit()); 4049 if (!(D->getPCHLevel() == 0 && RD->getPCHLevel() > 0)) 4050 return; // Not a source member added to a class from PCH. 4051 if (!isa<CXXMethodDecl>(D)) 4052 return; // We are interested in lazily declared implicit methods. 4053 4054 // A decl coming from PCH was modified. 4055 assert(RD->isDefinition()); 4056 UpdateRecord &Record = DeclUpdates[RD]; 4057 Record.push_back(UPD_CXX_ADDED_IMPLICIT_MEMBER); 4058 AddDeclRef(D, Record); 4059} 4060 4061void ASTWriter::AddedCXXTemplateSpecialization(const ClassTemplateDecl *TD, 4062 const ClassTemplateSpecializationDecl *D) { 4063 // The specializations set is kept in the canonical template. 4064 TD = TD->getCanonicalDecl(); 4065 if (!(D->getPCHLevel() == 0 && TD->getPCHLevel() > 0)) 4066 return; // Not a source specialization added to a template from PCH. 4067 4068 UpdateRecord &Record = DeclUpdates[TD]; 4069 Record.push_back(UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION); 4070 AddDeclRef(D, Record); 4071} 4072 4073void ASTWriter::AddedCXXTemplateSpecialization(const FunctionTemplateDecl *TD, 4074 const FunctionDecl *D) { 4075 // The specializations set is kept in the canonical template. 4076 TD = TD->getCanonicalDecl(); 4077 if (!(D->getPCHLevel() == 0 && TD->getPCHLevel() > 0)) 4078 return; // Not a source specialization added to a template from PCH. 4079 4080 UpdateRecord &Record = DeclUpdates[TD]; 4081 Record.push_back(UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION); 4082 AddDeclRef(D, Record); 4083} 4084 4085void ASTWriter::CompletedImplicitDefinition(const FunctionDecl *D) { 4086 if (D->getPCHLevel() == 0) 4087 return; // Declaration not imported from PCH. 4088 4089 // Implicit decl from a PCH was defined. 4090 // FIXME: Should implicit definition be a separate FunctionDecl? 4091 RewriteDecl(D); 4092} 4093 4094void ASTWriter::StaticDataMemberInstantiated(const VarDecl *D) { 4095 if (D->getPCHLevel() == 0) 4096 return; 4097 4098 // Since the actual instantiation is delayed, this really means that we need 4099 // to update the instantiation location. 4100 UpdateRecord &Record = DeclUpdates[D]; 4101 Record.push_back(UPD_CXX_INSTANTIATED_STATIC_DATA_MEMBER); 4102 AddSourceLocation( 4103 D->getMemberSpecializationInfo()->getPointOfInstantiation(), Record); 4104} 4105 4106ASTSerializationListener::~ASTSerializationListener() { } 4107