ASTWriter.cpp revision 837593fec8389eea3143920d7f2180b079b609e8
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(ORIGINAL_PCH_DIR); 784 RECORD(FP_PRAGMA_OPTIONS); 785 RECORD(OPENCL_EXTENSIONS); 786 RECORD(DELEGATING_CTORS); 787 RECORD(FILE_SOURCE_LOCATION_OFFSETS); 788 RECORD(KNOWN_NAMESPACES); 789 RECORD(MODULE_OFFSET_MAP); 790 RECORD(SOURCE_MANAGER_LINE_TABLE); 791 792 // SourceManager Block. 793 BLOCK(SOURCE_MANAGER_BLOCK); 794 RECORD(SM_SLOC_FILE_ENTRY); 795 RECORD(SM_SLOC_BUFFER_ENTRY); 796 RECORD(SM_SLOC_BUFFER_BLOB); 797 RECORD(SM_SLOC_EXPANSION_ENTRY); 798 799 // Preprocessor Block. 800 BLOCK(PREPROCESSOR_BLOCK); 801 RECORD(PP_MACRO_OBJECT_LIKE); 802 RECORD(PP_MACRO_FUNCTION_LIKE); 803 RECORD(PP_TOKEN); 804 805 // Decls and Types block. 806 BLOCK(DECLTYPES_BLOCK); 807 RECORD(TYPE_EXT_QUAL); 808 RECORD(TYPE_COMPLEX); 809 RECORD(TYPE_POINTER); 810 RECORD(TYPE_BLOCK_POINTER); 811 RECORD(TYPE_LVALUE_REFERENCE); 812 RECORD(TYPE_RVALUE_REFERENCE); 813 RECORD(TYPE_MEMBER_POINTER); 814 RECORD(TYPE_CONSTANT_ARRAY); 815 RECORD(TYPE_INCOMPLETE_ARRAY); 816 RECORD(TYPE_VARIABLE_ARRAY); 817 RECORD(TYPE_VECTOR); 818 RECORD(TYPE_EXT_VECTOR); 819 RECORD(TYPE_FUNCTION_PROTO); 820 RECORD(TYPE_FUNCTION_NO_PROTO); 821 RECORD(TYPE_TYPEDEF); 822 RECORD(TYPE_TYPEOF_EXPR); 823 RECORD(TYPE_TYPEOF); 824 RECORD(TYPE_RECORD); 825 RECORD(TYPE_ENUM); 826 RECORD(TYPE_OBJC_INTERFACE); 827 RECORD(TYPE_OBJC_OBJECT); 828 RECORD(TYPE_OBJC_OBJECT_POINTER); 829 RECORD(TYPE_DECLTYPE); 830 RECORD(TYPE_ELABORATED); 831 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM); 832 RECORD(TYPE_UNRESOLVED_USING); 833 RECORD(TYPE_INJECTED_CLASS_NAME); 834 RECORD(TYPE_OBJC_OBJECT); 835 RECORD(TYPE_TEMPLATE_TYPE_PARM); 836 RECORD(TYPE_TEMPLATE_SPECIALIZATION); 837 RECORD(TYPE_DEPENDENT_NAME); 838 RECORD(TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION); 839 RECORD(TYPE_DEPENDENT_SIZED_ARRAY); 840 RECORD(TYPE_PAREN); 841 RECORD(TYPE_PACK_EXPANSION); 842 RECORD(TYPE_ATTRIBUTED); 843 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK); 844 RECORD(DECL_TRANSLATION_UNIT); 845 RECORD(DECL_TYPEDEF); 846 RECORD(DECL_ENUM); 847 RECORD(DECL_RECORD); 848 RECORD(DECL_ENUM_CONSTANT); 849 RECORD(DECL_FUNCTION); 850 RECORD(DECL_OBJC_METHOD); 851 RECORD(DECL_OBJC_INTERFACE); 852 RECORD(DECL_OBJC_PROTOCOL); 853 RECORD(DECL_OBJC_IVAR); 854 RECORD(DECL_OBJC_AT_DEFS_FIELD); 855 RECORD(DECL_OBJC_CLASS); 856 RECORD(DECL_OBJC_FORWARD_PROTOCOL); 857 RECORD(DECL_OBJC_CATEGORY); 858 RECORD(DECL_OBJC_CATEGORY_IMPL); 859 RECORD(DECL_OBJC_IMPLEMENTATION); 860 RECORD(DECL_OBJC_COMPATIBLE_ALIAS); 861 RECORD(DECL_OBJC_PROPERTY); 862 RECORD(DECL_OBJC_PROPERTY_IMPL); 863 RECORD(DECL_FIELD); 864 RECORD(DECL_VAR); 865 RECORD(DECL_IMPLICIT_PARAM); 866 RECORD(DECL_PARM_VAR); 867 RECORD(DECL_FILE_SCOPE_ASM); 868 RECORD(DECL_BLOCK); 869 RECORD(DECL_CONTEXT_LEXICAL); 870 RECORD(DECL_CONTEXT_VISIBLE); 871 RECORD(DECL_NAMESPACE); 872 RECORD(DECL_NAMESPACE_ALIAS); 873 RECORD(DECL_USING); 874 RECORD(DECL_USING_SHADOW); 875 RECORD(DECL_USING_DIRECTIVE); 876 RECORD(DECL_UNRESOLVED_USING_VALUE); 877 RECORD(DECL_UNRESOLVED_USING_TYPENAME); 878 RECORD(DECL_LINKAGE_SPEC); 879 RECORD(DECL_CXX_RECORD); 880 RECORD(DECL_CXX_METHOD); 881 RECORD(DECL_CXX_CONSTRUCTOR); 882 RECORD(DECL_CXX_DESTRUCTOR); 883 RECORD(DECL_CXX_CONVERSION); 884 RECORD(DECL_ACCESS_SPEC); 885 RECORD(DECL_FRIEND); 886 RECORD(DECL_FRIEND_TEMPLATE); 887 RECORD(DECL_CLASS_TEMPLATE); 888 RECORD(DECL_CLASS_TEMPLATE_SPECIALIZATION); 889 RECORD(DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION); 890 RECORD(DECL_FUNCTION_TEMPLATE); 891 RECORD(DECL_TEMPLATE_TYPE_PARM); 892 RECORD(DECL_NON_TYPE_TEMPLATE_PARM); 893 RECORD(DECL_TEMPLATE_TEMPLATE_PARM); 894 RECORD(DECL_STATIC_ASSERT); 895 RECORD(DECL_CXX_BASE_SPECIFIERS); 896 RECORD(DECL_INDIRECTFIELD); 897 RECORD(DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK); 898 899 // Statements and Exprs can occur in the Decls and Types block. 900 AddStmtsExprs(Stream, Record); 901 902 BLOCK(PREPROCESSOR_DETAIL_BLOCK); 903 RECORD(PPD_MACRO_EXPANSION); 904 RECORD(PPD_MACRO_DEFINITION); 905 RECORD(PPD_INCLUSION_DIRECTIVE); 906 907#undef RECORD 908#undef BLOCK 909 Stream.ExitBlock(); 910} 911 912/// \brief Adjusts the given filename to only write out the portion of the 913/// filename that is not part of the system root directory. 914/// 915/// \param Filename the file name to adjust. 916/// 917/// \param isysroot When non-NULL, the PCH file is a relocatable PCH file and 918/// the returned filename will be adjusted by this system root. 919/// 920/// \returns either the original filename (if it needs no adjustment) or the 921/// adjusted filename (which points into the @p Filename parameter). 922static const char * 923adjustFilenameForRelocatablePCH(const char *Filename, StringRef isysroot) { 924 assert(Filename && "No file name to adjust?"); 925 926 if (isysroot.empty()) 927 return Filename; 928 929 // Verify that the filename and the system root have the same prefix. 930 unsigned Pos = 0; 931 for (; Filename[Pos] && Pos < isysroot.size(); ++Pos) 932 if (Filename[Pos] != isysroot[Pos]) 933 return Filename; // Prefixes don't match. 934 935 // We hit the end of the filename before we hit the end of the system root. 936 if (!Filename[Pos]) 937 return Filename; 938 939 // If the file name has a '/' at the current position, skip over the '/'. 940 // We distinguish sysroot-based includes from absolute includes by the 941 // absence of '/' at the beginning of sysroot-based includes. 942 if (Filename[Pos] == '/') 943 ++Pos; 944 945 return Filename + Pos; 946} 947 948/// \brief Write the AST metadata (e.g., i686-apple-darwin9). 949void ASTWriter::WriteMetadata(ASTContext &Context, StringRef isysroot, 950 const std::string &OutputFile) { 951 using namespace llvm; 952 953 // Metadata 954 const TargetInfo &Target = Context.Target; 955 BitCodeAbbrev *MetaAbbrev = new BitCodeAbbrev(); 956 MetaAbbrev->Add(BitCodeAbbrevOp( 957 Chain ? CHAINED_METADATA : METADATA)); 958 MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // AST major 959 MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // AST minor 960 MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang major 961 MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang minor 962 MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Relocatable 963 // Target triple or chained PCH name 964 MetaAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 965 unsigned MetaAbbrevCode = Stream.EmitAbbrev(MetaAbbrev); 966 967 RecordData Record; 968 Record.push_back(Chain ? CHAINED_METADATA : METADATA); 969 Record.push_back(VERSION_MAJOR); 970 Record.push_back(VERSION_MINOR); 971 Record.push_back(CLANG_VERSION_MAJOR); 972 Record.push_back(CLANG_VERSION_MINOR); 973 Record.push_back(!isysroot.empty()); 974 // FIXME: This writes the absolute path for chained headers. 975 const std::string &BlobStr = 976 Chain ? Chain->getFileName() : Target.getTriple().getTriple(); 977 Stream.EmitRecordWithBlob(MetaAbbrevCode, Record, BlobStr); 978 979 // Original file name and file ID 980 SourceManager &SM = Context.getSourceManager(); 981 if (const FileEntry *MainFile = SM.getFileEntryForID(SM.getMainFileID())) { 982 BitCodeAbbrev *FileAbbrev = new BitCodeAbbrev(); 983 FileAbbrev->Add(BitCodeAbbrevOp(ORIGINAL_FILE_NAME)); 984 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name 985 unsigned FileAbbrevCode = Stream.EmitAbbrev(FileAbbrev); 986 987 llvm::SmallString<128> MainFilePath(MainFile->getName()); 988 989 llvm::sys::fs::make_absolute(MainFilePath); 990 991 const char *MainFileNameStr = MainFilePath.c_str(); 992 MainFileNameStr = adjustFilenameForRelocatablePCH(MainFileNameStr, 993 isysroot); 994 RecordData Record; 995 Record.push_back(ORIGINAL_FILE_NAME); 996 Stream.EmitRecordWithBlob(FileAbbrevCode, Record, MainFileNameStr); 997 998 Record.clear(); 999 Record.push_back(SM.getMainFileID().getOpaqueValue()); 1000 Stream.EmitRecord(ORIGINAL_FILE_ID, Record); 1001 } 1002 1003 // Original PCH directory 1004 if (!OutputFile.empty() && OutputFile != "-") { 1005 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1006 Abbrev->Add(BitCodeAbbrevOp(ORIGINAL_PCH_DIR)); 1007 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name 1008 unsigned AbbrevCode = Stream.EmitAbbrev(Abbrev); 1009 1010 llvm::SmallString<128> OutputPath(OutputFile); 1011 1012 llvm::sys::fs::make_absolute(OutputPath); 1013 StringRef origDir = llvm::sys::path::parent_path(OutputPath); 1014 1015 RecordData Record; 1016 Record.push_back(ORIGINAL_PCH_DIR); 1017 Stream.EmitRecordWithBlob(AbbrevCode, Record, origDir); 1018 } 1019 1020 // Repository branch/version information. 1021 BitCodeAbbrev *RepoAbbrev = new BitCodeAbbrev(); 1022 RepoAbbrev->Add(BitCodeAbbrevOp(VERSION_CONTROL_BRANCH_REVISION)); 1023 RepoAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // SVN branch/tag 1024 unsigned RepoAbbrevCode = Stream.EmitAbbrev(RepoAbbrev); 1025 Record.clear(); 1026 Record.push_back(VERSION_CONTROL_BRANCH_REVISION); 1027 Stream.EmitRecordWithBlob(RepoAbbrevCode, Record, 1028 getClangFullRepositoryVersion()); 1029} 1030 1031/// \brief Write the LangOptions structure. 1032void ASTWriter::WriteLanguageOptions(const LangOptions &LangOpts) { 1033 RecordData Record; 1034 Record.push_back(LangOpts.Trigraphs); 1035 Record.push_back(LangOpts.BCPLComment); // BCPL-style '//' comments. 1036 Record.push_back(LangOpts.DollarIdents); // '$' allowed in identifiers. 1037 Record.push_back(LangOpts.AsmPreprocessor); // Preprocessor in asm mode. 1038 Record.push_back(LangOpts.GNUMode); // True in gnu99 mode false in c99 mode (etc) 1039 Record.push_back(LangOpts.GNUKeywords); // Allow GNU-extension keywords 1040 Record.push_back(LangOpts.ImplicitInt); // C89 implicit 'int'. 1041 Record.push_back(LangOpts.Digraphs); // C94, C99 and C++ 1042 Record.push_back(LangOpts.HexFloats); // C99 Hexadecimal float constants. 1043 Record.push_back(LangOpts.C99); // C99 Support 1044 Record.push_back(LangOpts.C1X); // C1X Support 1045 Record.push_back(LangOpts.Microsoft); // Microsoft extensions. 1046 // LangOpts.MSCVersion is ignored because all it does it set a macro, which is 1047 // already saved elsewhere. 1048 Record.push_back(LangOpts.CPlusPlus); // C++ Support 1049 Record.push_back(LangOpts.CPlusPlus0x); // C++0x Support 1050 Record.push_back(LangOpts.CXXOperatorNames); // Treat C++ operator names as keywords. 1051 1052 Record.push_back(LangOpts.ObjC1); // Objective-C 1 support enabled. 1053 Record.push_back(LangOpts.ObjC2); // Objective-C 2 support enabled. 1054 Record.push_back(LangOpts.ObjCNonFragileABI); // Objective-C 1055 // modern abi enabled. 1056 Record.push_back(LangOpts.ObjCNonFragileABI2); // Objective-C enhanced 1057 // modern abi enabled. 1058 Record.push_back(LangOpts.AppleKext); // Apple's kernel extensions ABI 1059 Record.push_back(LangOpts.ObjCDefaultSynthProperties); // Objective-C auto-synthesized 1060 // properties enabled. 1061 Record.push_back(LangOpts.ObjCInferRelatedResultType); 1062 Record.push_back(LangOpts.NoConstantCFStrings); // non cfstring generation enabled.. 1063 1064 Record.push_back(LangOpts.PascalStrings); // Allow Pascal strings 1065 Record.push_back(LangOpts.WritableStrings); // Allow writable strings 1066 Record.push_back(LangOpts.LaxVectorConversions); 1067 Record.push_back(LangOpts.AltiVec); 1068 Record.push_back(LangOpts.Exceptions); // Support exception handling. 1069 Record.push_back(LangOpts.ObjCExceptions); 1070 Record.push_back(LangOpts.CXXExceptions); 1071 Record.push_back(LangOpts.SjLjExceptions); 1072 1073 Record.push_back(LangOpts.MSBitfields); // MS-compatible structure layout 1074 Record.push_back(LangOpts.NeXTRuntime); // Use NeXT runtime. 1075 Record.push_back(LangOpts.Freestanding); // Freestanding implementation 1076 Record.push_back(LangOpts.NoBuiltin); // Do not use builtin functions (-fno-builtin) 1077 1078 // Whether static initializers are protected by locks. 1079 Record.push_back(LangOpts.ThreadsafeStatics); 1080 Record.push_back(LangOpts.POSIXThreads); 1081 Record.push_back(LangOpts.Blocks); // block extension to C 1082 Record.push_back(LangOpts.EmitAllDecls); // Emit all declarations, even if 1083 // they are unused. 1084 Record.push_back(LangOpts.MathErrno); // Math functions must respect errno 1085 // (modulo the platform support). 1086 1087 Record.push_back(LangOpts.getSignedOverflowBehavior()); 1088 Record.push_back(LangOpts.HeinousExtensions); 1089 1090 Record.push_back(LangOpts.Optimize); // Whether __OPTIMIZE__ should be defined. 1091 Record.push_back(LangOpts.OptimizeSize); // Whether __OPTIMIZE_SIZE__ should be 1092 // defined. 1093 Record.push_back(LangOpts.Static); // Should __STATIC__ be defined (as 1094 // opposed to __DYNAMIC__). 1095 Record.push_back(LangOpts.PICLevel); // The value for __PIC__, if non-zero. 1096 1097 Record.push_back(LangOpts.GNUInline); // Should GNU inline semantics be 1098 // used (instead of C99 semantics). 1099 Record.push_back(LangOpts.NoInline); // Should __NO_INLINE__ be defined. 1100 Record.push_back(LangOpts.Deprecated); // Should __DEPRECATED be defined. 1101 Record.push_back(LangOpts.AccessControl); // Whether C++ access control should 1102 // be enabled. 1103 Record.push_back(LangOpts.CharIsSigned); // Whether char is a signed or 1104 // unsigned type 1105 Record.push_back(LangOpts.ShortWChar); // force wchar_t to be unsigned short 1106 Record.push_back(LangOpts.ShortEnums); // Should the enum type be equivalent 1107 // to the smallest integer type with 1108 // enough room. 1109 Record.push_back(LangOpts.getGCMode()); 1110 Record.push_back(LangOpts.getVisibilityMode()); 1111 Record.push_back(LangOpts.getStackProtectorMode()); 1112 Record.push_back(LangOpts.InstantiationDepth); 1113 Record.push_back(LangOpts.OpenCL); 1114 Record.push_back(LangOpts.CUDA); 1115 Record.push_back(LangOpts.CatchUndefined); 1116 Record.push_back(LangOpts.DefaultFPContract); 1117 Record.push_back(LangOpts.ElideConstructors); 1118 Record.push_back(LangOpts.SpellChecking); 1119 Record.push_back(LangOpts.MRTD); 1120 Record.push_back(LangOpts.ObjCAutoRefCount); 1121 Record.push_back(LangOpts.ObjCInferRelatedReturnType); 1122 Stream.EmitRecord(LANGUAGE_OPTIONS, Record); 1123} 1124 1125//===----------------------------------------------------------------------===// 1126// stat cache Serialization 1127//===----------------------------------------------------------------------===// 1128 1129namespace { 1130// Trait used for the on-disk hash table of stat cache results. 1131class ASTStatCacheTrait { 1132public: 1133 typedef const char * key_type; 1134 typedef key_type key_type_ref; 1135 1136 typedef struct stat data_type; 1137 typedef const data_type &data_type_ref; 1138 1139 static unsigned ComputeHash(const char *path) { 1140 return llvm::HashString(path); 1141 } 1142 1143 std::pair<unsigned,unsigned> 1144 EmitKeyDataLength(raw_ostream& Out, const char *path, 1145 data_type_ref Data) { 1146 unsigned StrLen = strlen(path); 1147 clang::io::Emit16(Out, StrLen); 1148 unsigned DataLen = 4 + 4 + 2 + 8 + 8; 1149 clang::io::Emit8(Out, DataLen); 1150 return std::make_pair(StrLen + 1, DataLen); 1151 } 1152 1153 void EmitKey(raw_ostream& Out, const char *path, unsigned KeyLen) { 1154 Out.write(path, KeyLen); 1155 } 1156 1157 void EmitData(raw_ostream &Out, key_type_ref, 1158 data_type_ref Data, unsigned DataLen) { 1159 using namespace clang::io; 1160 uint64_t Start = Out.tell(); (void)Start; 1161 1162 Emit32(Out, (uint32_t) Data.st_ino); 1163 Emit32(Out, (uint32_t) Data.st_dev); 1164 Emit16(Out, (uint16_t) Data.st_mode); 1165 Emit64(Out, (uint64_t) Data.st_mtime); 1166 Emit64(Out, (uint64_t) Data.st_size); 1167 1168 assert(Out.tell() - Start == DataLen && "Wrong data length"); 1169 } 1170}; 1171} // end anonymous namespace 1172 1173/// \brief Write the stat() system call cache to the AST file. 1174void ASTWriter::WriteStatCache(MemorizeStatCalls &StatCalls) { 1175 // Build the on-disk hash table containing information about every 1176 // stat() call. 1177 OnDiskChainedHashTableGenerator<ASTStatCacheTrait> Generator; 1178 unsigned NumStatEntries = 0; 1179 for (MemorizeStatCalls::iterator Stat = StatCalls.begin(), 1180 StatEnd = StatCalls.end(); 1181 Stat != StatEnd; ++Stat, ++NumStatEntries) { 1182 StringRef Filename = Stat->first(); 1183 Generator.insert(Filename.data(), Stat->second); 1184 } 1185 1186 // Create the on-disk hash table in a buffer. 1187 llvm::SmallString<4096> StatCacheData; 1188 uint32_t BucketOffset; 1189 { 1190 llvm::raw_svector_ostream Out(StatCacheData); 1191 // Make sure that no bucket is at offset 0 1192 clang::io::Emit32(Out, 0); 1193 BucketOffset = Generator.Emit(Out); 1194 } 1195 1196 // Create a blob abbreviation 1197 using namespace llvm; 1198 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1199 Abbrev->Add(BitCodeAbbrevOp(STAT_CACHE)); 1200 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1201 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1202 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1203 unsigned StatCacheAbbrev = Stream.EmitAbbrev(Abbrev); 1204 1205 // Write the stat cache 1206 RecordData Record; 1207 Record.push_back(STAT_CACHE); 1208 Record.push_back(BucketOffset); 1209 Record.push_back(NumStatEntries); 1210 Stream.EmitRecordWithBlob(StatCacheAbbrev, Record, StatCacheData.str()); 1211} 1212 1213//===----------------------------------------------------------------------===// 1214// Source Manager Serialization 1215//===----------------------------------------------------------------------===// 1216 1217/// \brief Create an abbreviation for the SLocEntry that refers to a 1218/// file. 1219static unsigned CreateSLocFileAbbrev(llvm::BitstreamWriter &Stream) { 1220 using namespace llvm; 1221 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1222 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_FILE_ENTRY)); 1223 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset 1224 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location 1225 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Characteristic 1226 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives 1227 // FileEntry fields. 1228 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 12)); // Size 1229 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // Modification time 1230 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name 1231 return Stream.EmitAbbrev(Abbrev); 1232} 1233 1234/// \brief Create an abbreviation for the SLocEntry that refers to a 1235/// buffer. 1236static unsigned CreateSLocBufferAbbrev(llvm::BitstreamWriter &Stream) { 1237 using namespace llvm; 1238 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1239 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_BUFFER_ENTRY)); 1240 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset 1241 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location 1242 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Characteristic 1243 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives 1244 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Buffer name blob 1245 return Stream.EmitAbbrev(Abbrev); 1246} 1247 1248/// \brief Create an abbreviation for the SLocEntry that refers to a 1249/// buffer's blob. 1250static unsigned CreateSLocBufferBlobAbbrev(llvm::BitstreamWriter &Stream) { 1251 using namespace llvm; 1252 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1253 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_BUFFER_BLOB)); 1254 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Blob 1255 return Stream.EmitAbbrev(Abbrev); 1256} 1257 1258/// \brief Create an abbreviation for the SLocEntry that refers to a macro 1259/// expansion. 1260static unsigned CreateSLocExpansionAbbrev(llvm::BitstreamWriter &Stream) { 1261 using namespace llvm; 1262 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1263 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_EXPANSION_ENTRY)); 1264 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset 1265 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Spelling location 1266 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Start location 1267 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // End location 1268 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Token length 1269 return Stream.EmitAbbrev(Abbrev); 1270} 1271 1272namespace { 1273 // Trait used for the on-disk hash table of header search information. 1274 class HeaderFileInfoTrait { 1275 ASTWriter &Writer; 1276 HeaderSearch &HS; 1277 1278 // Keep track of the framework names we've used during serialization. 1279 SmallVector<char, 128> FrameworkStringData; 1280 llvm::StringMap<unsigned> FrameworkNameOffset; 1281 1282 public: 1283 HeaderFileInfoTrait(ASTWriter &Writer, HeaderSearch &HS) 1284 : Writer(Writer), HS(HS) { } 1285 1286 typedef const char *key_type; 1287 typedef key_type key_type_ref; 1288 1289 typedef HeaderFileInfo data_type; 1290 typedef const data_type &data_type_ref; 1291 1292 static unsigned ComputeHash(const char *path) { 1293 // The hash is based only on the filename portion of the key, so that the 1294 // reader can match based on filenames when symlinking or excess path 1295 // elements ("foo/../", "../") change the form of the name. However, 1296 // complete path is still the key. 1297 return llvm::HashString(llvm::sys::path::filename(path)); 1298 } 1299 1300 std::pair<unsigned,unsigned> 1301 EmitKeyDataLength(raw_ostream& Out, const char *path, 1302 data_type_ref Data) { 1303 unsigned StrLen = strlen(path); 1304 clang::io::Emit16(Out, StrLen); 1305 unsigned DataLen = 1 + 2 + 4 + 4; 1306 clang::io::Emit8(Out, DataLen); 1307 return std::make_pair(StrLen + 1, DataLen); 1308 } 1309 1310 void EmitKey(raw_ostream& Out, const char *path, unsigned KeyLen) { 1311 Out.write(path, KeyLen); 1312 } 1313 1314 void EmitData(raw_ostream &Out, key_type_ref, 1315 data_type_ref Data, unsigned DataLen) { 1316 using namespace clang::io; 1317 uint64_t Start = Out.tell(); (void)Start; 1318 1319 unsigned char Flags = (Data.isImport << 5) 1320 | (Data.isPragmaOnce << 4) 1321 | (Data.DirInfo << 2) 1322 | (Data.Resolved << 1) 1323 | Data.IndexHeaderMapHeader; 1324 Emit8(Out, (uint8_t)Flags); 1325 Emit16(Out, (uint16_t) Data.NumIncludes); 1326 1327 if (!Data.ControllingMacro) 1328 Emit32(Out, (uint32_t)Data.ControllingMacroID); 1329 else 1330 Emit32(Out, (uint32_t)Writer.getIdentifierRef(Data.ControllingMacro)); 1331 1332 unsigned Offset = 0; 1333 if (!Data.Framework.empty()) { 1334 // If this header refers into a framework, save the framework name. 1335 llvm::StringMap<unsigned>::iterator Pos 1336 = FrameworkNameOffset.find(Data.Framework); 1337 if (Pos == FrameworkNameOffset.end()) { 1338 Offset = FrameworkStringData.size() + 1; 1339 FrameworkStringData.append(Data.Framework.begin(), 1340 Data.Framework.end()); 1341 FrameworkStringData.push_back(0); 1342 1343 FrameworkNameOffset[Data.Framework] = Offset; 1344 } else 1345 Offset = Pos->second; 1346 } 1347 Emit32(Out, Offset); 1348 1349 assert(Out.tell() - Start == DataLen && "Wrong data length"); 1350 } 1351 1352 const char *strings_begin() const { return FrameworkStringData.begin(); } 1353 const char *strings_end() const { return FrameworkStringData.end(); } 1354 }; 1355} // end anonymous namespace 1356 1357/// \brief Write the header search block for the list of files that 1358/// 1359/// \param HS The header search structure to save. 1360/// 1361/// \param Chain Whether we're creating a chained AST file. 1362void ASTWriter::WriteHeaderSearch(HeaderSearch &HS, StringRef isysroot) { 1363 SmallVector<const FileEntry *, 16> FilesByUID; 1364 HS.getFileMgr().GetUniqueIDMapping(FilesByUID); 1365 1366 if (FilesByUID.size() > HS.header_file_size()) 1367 FilesByUID.resize(HS.header_file_size()); 1368 1369 HeaderFileInfoTrait GeneratorTrait(*this, HS); 1370 OnDiskChainedHashTableGenerator<HeaderFileInfoTrait> Generator; 1371 SmallVector<const char *, 4> SavedStrings; 1372 unsigned NumHeaderSearchEntries = 0; 1373 for (unsigned UID = 0, LastUID = FilesByUID.size(); UID != LastUID; ++UID) { 1374 const FileEntry *File = FilesByUID[UID]; 1375 if (!File) 1376 continue; 1377 1378 const HeaderFileInfo &HFI = HS.header_file_begin()[UID]; 1379 if (HFI.External && Chain) 1380 continue; 1381 1382 // Turn the file name into an absolute path, if it isn't already. 1383 const char *Filename = File->getName(); 1384 Filename = adjustFilenameForRelocatablePCH(Filename, isysroot); 1385 1386 // If we performed any translation on the file name at all, we need to 1387 // save this string, since the generator will refer to it later. 1388 if (Filename != File->getName()) { 1389 Filename = strdup(Filename); 1390 SavedStrings.push_back(Filename); 1391 } 1392 1393 Generator.insert(Filename, HFI, GeneratorTrait); 1394 ++NumHeaderSearchEntries; 1395 } 1396 1397 // Create the on-disk hash table in a buffer. 1398 llvm::SmallString<4096> TableData; 1399 uint32_t BucketOffset; 1400 { 1401 llvm::raw_svector_ostream Out(TableData); 1402 // Make sure that no bucket is at offset 0 1403 clang::io::Emit32(Out, 0); 1404 BucketOffset = Generator.Emit(Out, GeneratorTrait); 1405 } 1406 1407 // Create a blob abbreviation 1408 using namespace llvm; 1409 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1410 Abbrev->Add(BitCodeAbbrevOp(HEADER_SEARCH_TABLE)); 1411 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1412 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1413 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 1414 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1415 unsigned TableAbbrev = Stream.EmitAbbrev(Abbrev); 1416 1417 // Write the header search table 1418 RecordData Record; 1419 Record.push_back(HEADER_SEARCH_TABLE); 1420 Record.push_back(BucketOffset); 1421 Record.push_back(NumHeaderSearchEntries); 1422 Record.push_back(TableData.size()); 1423 TableData.append(GeneratorTrait.strings_begin(),GeneratorTrait.strings_end()); 1424 Stream.EmitRecordWithBlob(TableAbbrev, Record, TableData.str()); 1425 1426 // Free all of the strings we had to duplicate. 1427 for (unsigned I = 0, N = SavedStrings.size(); I != N; ++I) 1428 free((void*)SavedStrings[I]); 1429} 1430 1431/// \brief Writes the block containing the serialized form of the 1432/// source manager. 1433/// 1434/// TODO: We should probably use an on-disk hash table (stored in a 1435/// blob), indexed based on the file name, so that we only create 1436/// entries for files that we actually need. In the common case (no 1437/// errors), we probably won't have to create file entries for any of 1438/// the files in the AST. 1439void ASTWriter::WriteSourceManagerBlock(SourceManager &SourceMgr, 1440 const Preprocessor &PP, 1441 StringRef isysroot) { 1442 RecordData Record; 1443 1444 // Enter the source manager block. 1445 Stream.EnterSubblock(SOURCE_MANAGER_BLOCK_ID, 3); 1446 1447 // Abbreviations for the various kinds of source-location entries. 1448 unsigned SLocFileAbbrv = CreateSLocFileAbbrev(Stream); 1449 unsigned SLocBufferAbbrv = CreateSLocBufferAbbrev(Stream); 1450 unsigned SLocBufferBlobAbbrv = CreateSLocBufferBlobAbbrev(Stream); 1451 unsigned SLocExpansionAbbrv = CreateSLocExpansionAbbrev(Stream); 1452 1453 // Write out the source location entry table. We skip the first 1454 // entry, which is always the same dummy entry. 1455 std::vector<uint32_t> SLocEntryOffsets; 1456 // Write out the offsets of only source location file entries. 1457 // We will go through them in ASTReader::validateFileEntries(). 1458 std::vector<uint32_t> SLocFileEntryOffsets; 1459 RecordData PreloadSLocs; 1460 SLocEntryOffsets.reserve(SourceMgr.local_sloc_entry_size() - 1); 1461 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size(); 1462 I != N; ++I) { 1463 // Get this source location entry. 1464 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I); 1465 1466 // Record the offset of this source-location entry. 1467 SLocEntryOffsets.push_back(Stream.GetCurrentBitNo()); 1468 1469 // Figure out which record code to use. 1470 unsigned Code; 1471 if (SLoc->isFile()) { 1472 if (SLoc->getFile().getContentCache()->OrigEntry) { 1473 Code = SM_SLOC_FILE_ENTRY; 1474 SLocFileEntryOffsets.push_back(Stream.GetCurrentBitNo()); 1475 } else 1476 Code = SM_SLOC_BUFFER_ENTRY; 1477 } else 1478 Code = SM_SLOC_EXPANSION_ENTRY; 1479 Record.clear(); 1480 Record.push_back(Code); 1481 1482 // Starting offset of this entry within this module, so skip the dummy. 1483 Record.push_back(SLoc->getOffset() - 2); 1484 if (SLoc->isFile()) { 1485 const SrcMgr::FileInfo &File = SLoc->getFile(); 1486 Record.push_back(File.getIncludeLoc().getRawEncoding()); 1487 Record.push_back(File.getFileCharacteristic()); // FIXME: stable encoding 1488 Record.push_back(File.hasLineDirectives()); 1489 1490 const SrcMgr::ContentCache *Content = File.getContentCache(); 1491 if (Content->OrigEntry) { 1492 assert(Content->OrigEntry == Content->ContentsEntry && 1493 "Writing to AST an overriden file is not supported"); 1494 1495 // The source location entry is a file. The blob associated 1496 // with this entry is the file name. 1497 1498 // Emit size/modification time for this file. 1499 Record.push_back(Content->OrigEntry->getSize()); 1500 Record.push_back(Content->OrigEntry->getModificationTime()); 1501 1502 // Turn the file name into an absolute path, if it isn't already. 1503 const char *Filename = Content->OrigEntry->getName(); 1504 llvm::SmallString<128> FilePath(Filename); 1505 1506 // Ask the file manager to fixup the relative path for us. This will 1507 // honor the working directory. 1508 SourceMgr.getFileManager().FixupRelativePath(FilePath); 1509 1510 // FIXME: This call to make_absolute shouldn't be necessary, the 1511 // call to FixupRelativePath should always return an absolute path. 1512 llvm::sys::fs::make_absolute(FilePath); 1513 Filename = FilePath.c_str(); 1514 1515 Filename = adjustFilenameForRelocatablePCH(Filename, isysroot); 1516 Stream.EmitRecordWithBlob(SLocFileAbbrv, Record, Filename); 1517 } else { 1518 // The source location entry is a buffer. The blob associated 1519 // with this entry contains the contents of the buffer. 1520 1521 // We add one to the size so that we capture the trailing NULL 1522 // that is required by llvm::MemoryBuffer::getMemBuffer (on 1523 // the reader side). 1524 const llvm::MemoryBuffer *Buffer 1525 = Content->getBuffer(PP.getDiagnostics(), PP.getSourceManager()); 1526 const char *Name = Buffer->getBufferIdentifier(); 1527 Stream.EmitRecordWithBlob(SLocBufferAbbrv, Record, 1528 StringRef(Name, strlen(Name) + 1)); 1529 Record.clear(); 1530 Record.push_back(SM_SLOC_BUFFER_BLOB); 1531 Stream.EmitRecordWithBlob(SLocBufferBlobAbbrv, Record, 1532 StringRef(Buffer->getBufferStart(), 1533 Buffer->getBufferSize() + 1)); 1534 1535 if (strcmp(Name, "<built-in>") == 0) { 1536 PreloadSLocs.push_back(SLocEntryOffsets.size()); 1537 } 1538 } 1539 } else { 1540 // The source location entry is a macro expansion. 1541 const SrcMgr::ExpansionInfo &Expansion = SLoc->getExpansion(); 1542 Record.push_back(Expansion.getSpellingLoc().getRawEncoding()); 1543 Record.push_back(Expansion.getExpansionLocStart().getRawEncoding()); 1544 Record.push_back(Expansion.getExpansionLocEnd().getRawEncoding()); 1545 1546 // Compute the token length for this macro expansion. 1547 unsigned NextOffset = SourceMgr.getNextLocalOffset(); 1548 if (I + 1 != N) 1549 NextOffset = SourceMgr.getLocalSLocEntry(I + 1).getOffset(); 1550 Record.push_back(NextOffset - SLoc->getOffset() - 1); 1551 Stream.EmitRecordWithAbbrev(SLocExpansionAbbrv, Record); 1552 } 1553 } 1554 1555 Stream.ExitBlock(); 1556 1557 if (SLocEntryOffsets.empty()) 1558 return; 1559 1560 // Write the source-location offsets table into the AST block. This 1561 // table is used for lazily loading source-location information. 1562 using namespace llvm; 1563 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1564 Abbrev->Add(BitCodeAbbrevOp(SOURCE_LOCATION_OFFSETS)); 1565 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs 1566 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // total size 1567 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets 1568 unsigned SLocOffsetsAbbrev = Stream.EmitAbbrev(Abbrev); 1569 1570 Record.clear(); 1571 Record.push_back(SOURCE_LOCATION_OFFSETS); 1572 Record.push_back(SLocEntryOffsets.size()); 1573 Record.push_back(SourceMgr.getNextLocalOffset() - 1); // skip dummy 1574 Stream.EmitRecordWithBlob(SLocOffsetsAbbrev, Record, data(SLocEntryOffsets)); 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::Fixed, 32)); // first macro def 1882 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1883 unsigned MacroDefOffsetAbbrev = Stream.EmitAbbrev(Abbrev); 1884 1885 Record.clear(); 1886 Record.push_back(MACRO_DEFINITION_OFFSETS); 1887 Record.push_back(NumPreprocessingRecords); 1888 Record.push_back(MacroDefinitionOffsets.size()); 1889 Record.push_back(FirstMacroID - NUM_PREDEF_MACRO_IDS); 1890 Stream.EmitRecordWithBlob(MacroDefOffsetAbbrev, Record, 1891 data(MacroDefinitionOffsets)); 1892 } 1893} 1894 1895void ASTWriter::WritePragmaDiagnosticMappings(const Diagnostic &Diag) { 1896 RecordData Record; 1897 for (Diagnostic::DiagStatePointsTy::const_iterator 1898 I = Diag.DiagStatePoints.begin(), E = Diag.DiagStatePoints.end(); 1899 I != E; ++I) { 1900 const Diagnostic::DiagStatePoint &point = *I; 1901 if (point.Loc.isInvalid()) 1902 continue; 1903 1904 Record.push_back(point.Loc.getRawEncoding()); 1905 for (Diagnostic::DiagState::iterator 1906 I = point.State->begin(), E = point.State->end(); I != E; ++I) { 1907 unsigned diag = I->first, map = I->second; 1908 if (map & 0x10) { // mapping from a diagnostic pragma. 1909 Record.push_back(diag); 1910 Record.push_back(map & 0x7); 1911 } 1912 } 1913 Record.push_back(-1); // mark the end of the diag/map pairs for this 1914 // location. 1915 } 1916 1917 if (!Record.empty()) 1918 Stream.EmitRecord(DIAG_PRAGMA_MAPPINGS, Record); 1919} 1920 1921void ASTWriter::WriteCXXBaseSpecifiersOffsets() { 1922 if (CXXBaseSpecifiersOffsets.empty()) 1923 return; 1924 1925 RecordData Record; 1926 1927 // Create a blob abbreviation for the C++ base specifiers offsets. 1928 using namespace llvm; 1929 1930 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 1931 Abbrev->Add(BitCodeAbbrevOp(CXX_BASE_SPECIFIER_OFFSETS)); 1932 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size 1933 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 1934 unsigned BaseSpecifierOffsetAbbrev = Stream.EmitAbbrev(Abbrev); 1935 1936 // Write the base specifier offsets table. 1937 Record.clear(); 1938 Record.push_back(CXX_BASE_SPECIFIER_OFFSETS); 1939 Record.push_back(CXXBaseSpecifiersOffsets.size()); 1940 Stream.EmitRecordWithBlob(BaseSpecifierOffsetAbbrev, Record, 1941 data(CXXBaseSpecifiersOffsets)); 1942} 1943 1944//===----------------------------------------------------------------------===// 1945// Type Serialization 1946//===----------------------------------------------------------------------===// 1947 1948/// \brief Write the representation of a type to the AST stream. 1949void ASTWriter::WriteType(QualType T) { 1950 TypeIdx &Idx = TypeIdxs[T]; 1951 if (Idx.getIndex() == 0) // we haven't seen this type before. 1952 Idx = TypeIdx(NextTypeID++); 1953 1954 assert(Idx.getIndex() >= FirstTypeID && "Re-writing a type from a prior AST"); 1955 1956 // Record the offset for this type. 1957 unsigned Index = Idx.getIndex() - FirstTypeID; 1958 if (TypeOffsets.size() == Index) 1959 TypeOffsets.push_back(Stream.GetCurrentBitNo()); 1960 else if (TypeOffsets.size() < Index) { 1961 TypeOffsets.resize(Index + 1); 1962 TypeOffsets[Index] = Stream.GetCurrentBitNo(); 1963 } 1964 1965 RecordData Record; 1966 1967 // Emit the type's representation. 1968 ASTTypeWriter W(*this, Record); 1969 1970 if (T.hasLocalNonFastQualifiers()) { 1971 Qualifiers Qs = T.getLocalQualifiers(); 1972 AddTypeRef(T.getLocalUnqualifiedType(), Record); 1973 Record.push_back(Qs.getAsOpaqueValue()); 1974 W.Code = TYPE_EXT_QUAL; 1975 } else { 1976 switch (T->getTypeClass()) { 1977 // For all of the concrete, non-dependent types, call the 1978 // appropriate visitor function. 1979#define TYPE(Class, Base) \ 1980 case Type::Class: W.Visit##Class##Type(cast<Class##Type>(T)); break; 1981#define ABSTRACT_TYPE(Class, Base) 1982#include "clang/AST/TypeNodes.def" 1983 } 1984 } 1985 1986 // Emit the serialized record. 1987 Stream.EmitRecord(W.Code, Record); 1988 1989 // Flush any expressions that were written as part of this type. 1990 FlushStmts(); 1991} 1992 1993//===----------------------------------------------------------------------===// 1994// Declaration Serialization 1995//===----------------------------------------------------------------------===// 1996 1997/// \brief Write the block containing all of the declaration IDs 1998/// lexically declared within the given DeclContext. 1999/// 2000/// \returns the offset of the DECL_CONTEXT_LEXICAL block within the 2001/// bistream, or 0 if no block was written. 2002uint64_t ASTWriter::WriteDeclContextLexicalBlock(ASTContext &Context, 2003 DeclContext *DC) { 2004 if (DC->decls_empty()) 2005 return 0; 2006 2007 uint64_t Offset = Stream.GetCurrentBitNo(); 2008 RecordData Record; 2009 Record.push_back(DECL_CONTEXT_LEXICAL); 2010 SmallVector<KindDeclIDPair, 64> Decls; 2011 for (DeclContext::decl_iterator D = DC->decls_begin(), DEnd = DC->decls_end(); 2012 D != DEnd; ++D) 2013 Decls.push_back(std::make_pair((*D)->getKind(), GetDeclRef(*D))); 2014 2015 ++NumLexicalDeclContexts; 2016 Stream.EmitRecordWithBlob(DeclContextLexicalAbbrev, Record, data(Decls)); 2017 return Offset; 2018} 2019 2020void ASTWriter::WriteTypeDeclOffsets() { 2021 using namespace llvm; 2022 RecordData Record; 2023 2024 // Write the type offsets array 2025 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 2026 Abbrev->Add(BitCodeAbbrevOp(TYPE_OFFSET)); 2027 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of types 2028 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base type index 2029 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // types block 2030 unsigned TypeOffsetAbbrev = Stream.EmitAbbrev(Abbrev); 2031 Record.clear(); 2032 Record.push_back(TYPE_OFFSET); 2033 Record.push_back(TypeOffsets.size()); 2034 Record.push_back(FirstTypeID - NUM_PREDEF_TYPE_IDS); 2035 Stream.EmitRecordWithBlob(TypeOffsetAbbrev, Record, data(TypeOffsets)); 2036 2037 // Write the declaration offsets array 2038 Abbrev = new BitCodeAbbrev(); 2039 Abbrev->Add(BitCodeAbbrevOp(DECL_OFFSET)); 2040 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of declarations 2041 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base decl ID 2042 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // declarations block 2043 unsigned DeclOffsetAbbrev = Stream.EmitAbbrev(Abbrev); 2044 Record.clear(); 2045 Record.push_back(DECL_OFFSET); 2046 Record.push_back(DeclOffsets.size()); 2047 Record.push_back(FirstDeclID - NUM_PREDEF_DECL_IDS); 2048 Stream.EmitRecordWithBlob(DeclOffsetAbbrev, Record, data(DeclOffsets)); 2049} 2050 2051//===----------------------------------------------------------------------===// 2052// Global Method Pool and Selector Serialization 2053//===----------------------------------------------------------------------===// 2054 2055namespace { 2056// Trait used for the on-disk hash table used in the method pool. 2057class ASTMethodPoolTrait { 2058 ASTWriter &Writer; 2059 2060public: 2061 typedef Selector key_type; 2062 typedef key_type key_type_ref; 2063 2064 struct data_type { 2065 SelectorID ID; 2066 ObjCMethodList Instance, Factory; 2067 }; 2068 typedef const data_type& data_type_ref; 2069 2070 explicit ASTMethodPoolTrait(ASTWriter &Writer) : Writer(Writer) { } 2071 2072 static unsigned ComputeHash(Selector Sel) { 2073 return serialization::ComputeHash(Sel); 2074 } 2075 2076 std::pair<unsigned,unsigned> 2077 EmitKeyDataLength(raw_ostream& Out, Selector Sel, 2078 data_type_ref Methods) { 2079 unsigned KeyLen = 2 + (Sel.getNumArgs()? Sel.getNumArgs() * 4 : 4); 2080 clang::io::Emit16(Out, KeyLen); 2081 unsigned DataLen = 4 + 2 + 2; // 2 bytes for each of the method counts 2082 for (const ObjCMethodList *Method = &Methods.Instance; Method; 2083 Method = Method->Next) 2084 if (Method->Method) 2085 DataLen += 4; 2086 for (const ObjCMethodList *Method = &Methods.Factory; Method; 2087 Method = Method->Next) 2088 if (Method->Method) 2089 DataLen += 4; 2090 clang::io::Emit16(Out, DataLen); 2091 return std::make_pair(KeyLen, DataLen); 2092 } 2093 2094 void EmitKey(raw_ostream& Out, Selector Sel, unsigned) { 2095 uint64_t Start = Out.tell(); 2096 assert((Start >> 32) == 0 && "Selector key offset too large"); 2097 Writer.SetSelectorOffset(Sel, Start); 2098 unsigned N = Sel.getNumArgs(); 2099 clang::io::Emit16(Out, N); 2100 if (N == 0) 2101 N = 1; 2102 for (unsigned I = 0; I != N; ++I) 2103 clang::io::Emit32(Out, 2104 Writer.getIdentifierRef(Sel.getIdentifierInfoForSlot(I))); 2105 } 2106 2107 void EmitData(raw_ostream& Out, key_type_ref, 2108 data_type_ref Methods, unsigned DataLen) { 2109 uint64_t Start = Out.tell(); (void)Start; 2110 clang::io::Emit32(Out, Methods.ID); 2111 unsigned NumInstanceMethods = 0; 2112 for (const ObjCMethodList *Method = &Methods.Instance; Method; 2113 Method = Method->Next) 2114 if (Method->Method) 2115 ++NumInstanceMethods; 2116 2117 unsigned NumFactoryMethods = 0; 2118 for (const ObjCMethodList *Method = &Methods.Factory; Method; 2119 Method = Method->Next) 2120 if (Method->Method) 2121 ++NumFactoryMethods; 2122 2123 clang::io::Emit16(Out, NumInstanceMethods); 2124 clang::io::Emit16(Out, NumFactoryMethods); 2125 for (const ObjCMethodList *Method = &Methods.Instance; Method; 2126 Method = Method->Next) 2127 if (Method->Method) 2128 clang::io::Emit32(Out, Writer.getDeclID(Method->Method)); 2129 for (const ObjCMethodList *Method = &Methods.Factory; Method; 2130 Method = Method->Next) 2131 if (Method->Method) 2132 clang::io::Emit32(Out, Writer.getDeclID(Method->Method)); 2133 2134 assert(Out.tell() - Start == DataLen && "Data length is wrong"); 2135 } 2136}; 2137} // end anonymous namespace 2138 2139/// \brief Write ObjC data: selectors and the method pool. 2140/// 2141/// The method pool contains both instance and factory methods, stored 2142/// in an on-disk hash table indexed by the selector. The hash table also 2143/// contains an empty entry for every other selector known to Sema. 2144void ASTWriter::WriteSelectors(Sema &SemaRef) { 2145 using namespace llvm; 2146 2147 // Do we have to do anything at all? 2148 if (SemaRef.MethodPool.empty() && SelectorIDs.empty()) 2149 return; 2150 unsigned NumTableEntries = 0; 2151 // Create and write out the blob that contains selectors and the method pool. 2152 { 2153 OnDiskChainedHashTableGenerator<ASTMethodPoolTrait> Generator; 2154 ASTMethodPoolTrait Trait(*this); 2155 2156 // Create the on-disk hash table representation. We walk through every 2157 // selector we've seen and look it up in the method pool. 2158 SelectorOffsets.resize(NextSelectorID - FirstSelectorID); 2159 for (llvm::DenseMap<Selector, SelectorID>::iterator 2160 I = SelectorIDs.begin(), E = SelectorIDs.end(); 2161 I != E; ++I) { 2162 Selector S = I->first; 2163 Sema::GlobalMethodPool::iterator F = SemaRef.MethodPool.find(S); 2164 ASTMethodPoolTrait::data_type Data = { 2165 I->second, 2166 ObjCMethodList(), 2167 ObjCMethodList() 2168 }; 2169 if (F != SemaRef.MethodPool.end()) { 2170 Data.Instance = F->second.first; 2171 Data.Factory = F->second.second; 2172 } 2173 // Only write this selector if it's not in an existing AST or something 2174 // changed. 2175 if (Chain && I->second < FirstSelectorID) { 2176 // Selector already exists. Did it change? 2177 bool changed = false; 2178 for (ObjCMethodList *M = &Data.Instance; !changed && M && M->Method; 2179 M = M->Next) { 2180 if (M->Method->getPCHLevel() == 0) 2181 changed = true; 2182 } 2183 for (ObjCMethodList *M = &Data.Factory; !changed && M && M->Method; 2184 M = M->Next) { 2185 if (M->Method->getPCHLevel() == 0) 2186 changed = true; 2187 } 2188 if (!changed) 2189 continue; 2190 } else if (Data.Instance.Method || Data.Factory.Method) { 2191 // A new method pool entry. 2192 ++NumTableEntries; 2193 } 2194 Generator.insert(S, Data, Trait); 2195 } 2196 2197 // Create the on-disk hash table in a buffer. 2198 llvm::SmallString<4096> MethodPool; 2199 uint32_t BucketOffset; 2200 { 2201 ASTMethodPoolTrait Trait(*this); 2202 llvm::raw_svector_ostream Out(MethodPool); 2203 // Make sure that no bucket is at offset 0 2204 clang::io::Emit32(Out, 0); 2205 BucketOffset = Generator.Emit(Out, Trait); 2206 } 2207 2208 // Create a blob abbreviation 2209 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 2210 Abbrev->Add(BitCodeAbbrevOp(METHOD_POOL)); 2211 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 2212 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 2213 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2214 unsigned MethodPoolAbbrev = Stream.EmitAbbrev(Abbrev); 2215 2216 // Write the method pool 2217 RecordData Record; 2218 Record.push_back(METHOD_POOL); 2219 Record.push_back(BucketOffset); 2220 Record.push_back(NumTableEntries); 2221 Stream.EmitRecordWithBlob(MethodPoolAbbrev, Record, MethodPool.str()); 2222 2223 // Create a blob abbreviation for the selector table offsets. 2224 Abbrev = new BitCodeAbbrev(); 2225 Abbrev->Add(BitCodeAbbrevOp(SELECTOR_OFFSETS)); 2226 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size 2227 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID 2228 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2229 unsigned SelectorOffsetAbbrev = Stream.EmitAbbrev(Abbrev); 2230 2231 // Write the selector offsets table. 2232 Record.clear(); 2233 Record.push_back(SELECTOR_OFFSETS); 2234 Record.push_back(SelectorOffsets.size()); 2235 Record.push_back(FirstSelectorID - NUM_PREDEF_SELECTOR_IDS); 2236 Stream.EmitRecordWithBlob(SelectorOffsetAbbrev, Record, 2237 data(SelectorOffsets)); 2238 } 2239} 2240 2241/// \brief Write the selectors referenced in @selector expression into AST file. 2242void ASTWriter::WriteReferencedSelectorsPool(Sema &SemaRef) { 2243 using namespace llvm; 2244 if (SemaRef.ReferencedSelectors.empty()) 2245 return; 2246 2247 RecordData Record; 2248 2249 // Note: this writes out all references even for a dependent AST. But it is 2250 // very tricky to fix, and given that @selector shouldn't really appear in 2251 // headers, probably not worth it. It's not a correctness issue. 2252 for (DenseMap<Selector, SourceLocation>::iterator S = 2253 SemaRef.ReferencedSelectors.begin(), 2254 E = SemaRef.ReferencedSelectors.end(); S != E; ++S) { 2255 Selector Sel = (*S).first; 2256 SourceLocation Loc = (*S).second; 2257 AddSelectorRef(Sel, Record); 2258 AddSourceLocation(Loc, Record); 2259 } 2260 Stream.EmitRecord(REFERENCED_SELECTOR_POOL, Record); 2261} 2262 2263//===----------------------------------------------------------------------===// 2264// Identifier Table Serialization 2265//===----------------------------------------------------------------------===// 2266 2267namespace { 2268class ASTIdentifierTableTrait { 2269 ASTWriter &Writer; 2270 Preprocessor &PP; 2271 2272 /// \brief Determines whether this is an "interesting" identifier 2273 /// that needs a full IdentifierInfo structure written into the hash 2274 /// table. 2275 static bool isInterestingIdentifier(const IdentifierInfo *II) { 2276 return II->isPoisoned() || 2277 II->isExtensionToken() || 2278 II->hasMacroDefinition() || 2279 II->getObjCOrBuiltinID() || 2280 II->getFETokenInfo<void>(); 2281 } 2282 2283public: 2284 typedef const IdentifierInfo* key_type; 2285 typedef key_type key_type_ref; 2286 2287 typedef IdentID data_type; 2288 typedef data_type data_type_ref; 2289 2290 ASTIdentifierTableTrait(ASTWriter &Writer, Preprocessor &PP) 2291 : Writer(Writer), PP(PP) { } 2292 2293 static unsigned ComputeHash(const IdentifierInfo* II) { 2294 return llvm::HashString(II->getName()); 2295 } 2296 2297 std::pair<unsigned,unsigned> 2298 EmitKeyDataLength(raw_ostream& Out, const IdentifierInfo* II, 2299 IdentID ID) { 2300 unsigned KeyLen = II->getLength() + 1; 2301 unsigned DataLen = 4; // 4 bytes for the persistent ID << 1 2302 if (isInterestingIdentifier(II)) { 2303 DataLen += 2; // 2 bytes for builtin ID, flags 2304 if (II->hasMacroDefinition() && 2305 !PP.getMacroInfo(const_cast<IdentifierInfo *>(II))->isBuiltinMacro()) 2306 DataLen += 4; 2307 for (IdentifierResolver::iterator D = IdentifierResolver::begin(II), 2308 DEnd = IdentifierResolver::end(); 2309 D != DEnd; ++D) 2310 DataLen += sizeof(DeclID); 2311 } 2312 clang::io::Emit16(Out, DataLen); 2313 // We emit the key length after the data length so that every 2314 // string is preceded by a 16-bit length. This matches the PTH 2315 // format for storing identifiers. 2316 clang::io::Emit16(Out, KeyLen); 2317 return std::make_pair(KeyLen, DataLen); 2318 } 2319 2320 void EmitKey(raw_ostream& Out, const IdentifierInfo* II, 2321 unsigned KeyLen) { 2322 // Record the location of the key data. This is used when generating 2323 // the mapping from persistent IDs to strings. 2324 Writer.SetIdentifierOffset(II, Out.tell()); 2325 Out.write(II->getNameStart(), KeyLen); 2326 } 2327 2328 void EmitData(raw_ostream& Out, const IdentifierInfo* II, 2329 IdentID ID, unsigned) { 2330 if (!isInterestingIdentifier(II)) { 2331 clang::io::Emit32(Out, ID << 1); 2332 return; 2333 } 2334 2335 clang::io::Emit32(Out, (ID << 1) | 0x01); 2336 uint32_t Bits = 0; 2337 bool hasMacroDefinition = 2338 II->hasMacroDefinition() && 2339 !PP.getMacroInfo(const_cast<IdentifierInfo *>(II))->isBuiltinMacro(); 2340 Bits = (uint32_t)II->getObjCOrBuiltinID(); 2341 Bits = (Bits << 1) | unsigned(hasMacroDefinition); 2342 Bits = (Bits << 1) | unsigned(II->isExtensionToken()); 2343 Bits = (Bits << 1) | unsigned(II->isPoisoned()); 2344 Bits = (Bits << 1) | unsigned(II->hasRevertedTokenIDToIdentifier()); 2345 Bits = (Bits << 1) | unsigned(II->isCPlusPlusOperatorKeyword()); 2346 clang::io::Emit16(Out, Bits); 2347 2348 if (hasMacroDefinition) 2349 clang::io::Emit32(Out, Writer.getMacroOffset(II)); 2350 2351 // Emit the declaration IDs in reverse order, because the 2352 // IdentifierResolver provides the declarations as they would be 2353 // visible (e.g., the function "stat" would come before the struct 2354 // "stat"), but IdentifierResolver::AddDeclToIdentifierChain() 2355 // adds declarations to the end of the list (so we need to see the 2356 // struct "status" before the function "status"). 2357 // Only emit declarations that aren't from a chained PCH, though. 2358 SmallVector<Decl *, 16> Decls(IdentifierResolver::begin(II), 2359 IdentifierResolver::end()); 2360 for (SmallVector<Decl *, 16>::reverse_iterator D = Decls.rbegin(), 2361 DEnd = Decls.rend(); 2362 D != DEnd; ++D) 2363 clang::io::Emit32(Out, Writer.getDeclID(*D)); 2364 } 2365}; 2366} // end anonymous namespace 2367 2368/// \brief Write the identifier table into the AST file. 2369/// 2370/// The identifier table consists of a blob containing string data 2371/// (the actual identifiers themselves) and a separate "offsets" index 2372/// that maps identifier IDs to locations within the blob. 2373void ASTWriter::WriteIdentifierTable(Preprocessor &PP) { 2374 using namespace llvm; 2375 2376 // Create and write out the blob that contains the identifier 2377 // strings. 2378 { 2379 OnDiskChainedHashTableGenerator<ASTIdentifierTableTrait> Generator; 2380 ASTIdentifierTableTrait Trait(*this, PP); 2381 2382 // Look for any identifiers that were named while processing the 2383 // headers, but are otherwise not needed. We add these to the hash 2384 // table to enable checking of the predefines buffer in the case 2385 // where the user adds new macro definitions when building the AST 2386 // file. 2387 for (IdentifierTable::iterator ID = PP.getIdentifierTable().begin(), 2388 IDEnd = PP.getIdentifierTable().end(); 2389 ID != IDEnd; ++ID) 2390 getIdentifierRef(ID->second); 2391 2392 // Create the on-disk hash table representation. We only store offsets 2393 // for identifiers that appear here for the first time. 2394 IdentifierOffsets.resize(NextIdentID - FirstIdentID); 2395 for (llvm::DenseMap<const IdentifierInfo *, IdentID>::iterator 2396 ID = IdentifierIDs.begin(), IDEnd = IdentifierIDs.end(); 2397 ID != IDEnd; ++ID) { 2398 assert(ID->first && "NULL identifier in identifier table"); 2399 if (!Chain || !ID->first->isFromAST()) 2400 Generator.insert(ID->first, ID->second, Trait); 2401 } 2402 2403 // Create the on-disk hash table in a buffer. 2404 llvm::SmallString<4096> IdentifierTable; 2405 uint32_t BucketOffset; 2406 { 2407 ASTIdentifierTableTrait Trait(*this, PP); 2408 llvm::raw_svector_ostream Out(IdentifierTable); 2409 // Make sure that no bucket is at offset 0 2410 clang::io::Emit32(Out, 0); 2411 BucketOffset = Generator.Emit(Out, Trait); 2412 } 2413 2414 // Create a blob abbreviation 2415 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 2416 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_TABLE)); 2417 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); 2418 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2419 unsigned IDTableAbbrev = Stream.EmitAbbrev(Abbrev); 2420 2421 // Write the identifier table 2422 RecordData Record; 2423 Record.push_back(IDENTIFIER_TABLE); 2424 Record.push_back(BucketOffset); 2425 Stream.EmitRecordWithBlob(IDTableAbbrev, Record, IdentifierTable.str()); 2426 } 2427 2428 // Write the offsets table for identifier IDs. 2429 BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 2430 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_OFFSET)); 2431 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of identifiers 2432 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID 2433 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 2434 unsigned IdentifierOffsetAbbrev = Stream.EmitAbbrev(Abbrev); 2435 2436 RecordData Record; 2437 Record.push_back(IDENTIFIER_OFFSET); 2438 Record.push_back(IdentifierOffsets.size()); 2439 Record.push_back(FirstIdentID - NUM_PREDEF_IDENT_IDS); 2440 Stream.EmitRecordWithBlob(IdentifierOffsetAbbrev, Record, 2441 data(IdentifierOffsets)); 2442} 2443 2444//===----------------------------------------------------------------------===// 2445// DeclContext's Name Lookup Table Serialization 2446//===----------------------------------------------------------------------===// 2447 2448namespace { 2449// Trait used for the on-disk hash table used in the method pool. 2450class ASTDeclContextNameLookupTrait { 2451 ASTWriter &Writer; 2452 2453public: 2454 typedef DeclarationName key_type; 2455 typedef key_type key_type_ref; 2456 2457 typedef DeclContext::lookup_result data_type; 2458 typedef const data_type& data_type_ref; 2459 2460 explicit ASTDeclContextNameLookupTrait(ASTWriter &Writer) : Writer(Writer) { } 2461 2462 unsigned ComputeHash(DeclarationName Name) { 2463 llvm::FoldingSetNodeID ID; 2464 ID.AddInteger(Name.getNameKind()); 2465 2466 switch (Name.getNameKind()) { 2467 case DeclarationName::Identifier: 2468 ID.AddString(Name.getAsIdentifierInfo()->getName()); 2469 break; 2470 case DeclarationName::ObjCZeroArgSelector: 2471 case DeclarationName::ObjCOneArgSelector: 2472 case DeclarationName::ObjCMultiArgSelector: 2473 ID.AddInteger(serialization::ComputeHash(Name.getObjCSelector())); 2474 break; 2475 case DeclarationName::CXXConstructorName: 2476 case DeclarationName::CXXDestructorName: 2477 case DeclarationName::CXXConversionFunctionName: 2478 break; 2479 case DeclarationName::CXXOperatorName: 2480 ID.AddInteger(Name.getCXXOverloadedOperator()); 2481 break; 2482 case DeclarationName::CXXLiteralOperatorName: 2483 ID.AddString(Name.getCXXLiteralIdentifier()->getName()); 2484 case DeclarationName::CXXUsingDirective: 2485 break; 2486 } 2487 2488 return ID.ComputeHash(); 2489 } 2490 2491 std::pair<unsigned,unsigned> 2492 EmitKeyDataLength(raw_ostream& Out, DeclarationName Name, 2493 data_type_ref Lookup) { 2494 unsigned KeyLen = 1; 2495 switch (Name.getNameKind()) { 2496 case DeclarationName::Identifier: 2497 case DeclarationName::ObjCZeroArgSelector: 2498 case DeclarationName::ObjCOneArgSelector: 2499 case DeclarationName::ObjCMultiArgSelector: 2500 case DeclarationName::CXXLiteralOperatorName: 2501 KeyLen += 4; 2502 break; 2503 case DeclarationName::CXXOperatorName: 2504 KeyLen += 1; 2505 break; 2506 case DeclarationName::CXXConstructorName: 2507 case DeclarationName::CXXDestructorName: 2508 case DeclarationName::CXXConversionFunctionName: 2509 case DeclarationName::CXXUsingDirective: 2510 break; 2511 } 2512 clang::io::Emit16(Out, KeyLen); 2513 2514 // 2 bytes for num of decls and 4 for each DeclID. 2515 unsigned DataLen = 2 + 4 * (Lookup.second - Lookup.first); 2516 clang::io::Emit16(Out, DataLen); 2517 2518 return std::make_pair(KeyLen, DataLen); 2519 } 2520 2521 void EmitKey(raw_ostream& Out, DeclarationName Name, unsigned) { 2522 using namespace clang::io; 2523 2524 assert(Name.getNameKind() < 0x100 && "Invalid name kind ?"); 2525 Emit8(Out, Name.getNameKind()); 2526 switch (Name.getNameKind()) { 2527 case DeclarationName::Identifier: 2528 Emit32(Out, Writer.getIdentifierRef(Name.getAsIdentifierInfo())); 2529 break; 2530 case DeclarationName::ObjCZeroArgSelector: 2531 case DeclarationName::ObjCOneArgSelector: 2532 case DeclarationName::ObjCMultiArgSelector: 2533 Emit32(Out, Writer.getSelectorRef(Name.getObjCSelector())); 2534 break; 2535 case DeclarationName::CXXOperatorName: 2536 assert(Name.getCXXOverloadedOperator() < 0x100 && "Invalid operator ?"); 2537 Emit8(Out, Name.getCXXOverloadedOperator()); 2538 break; 2539 case DeclarationName::CXXLiteralOperatorName: 2540 Emit32(Out, Writer.getIdentifierRef(Name.getCXXLiteralIdentifier())); 2541 break; 2542 case DeclarationName::CXXConstructorName: 2543 case DeclarationName::CXXDestructorName: 2544 case DeclarationName::CXXConversionFunctionName: 2545 case DeclarationName::CXXUsingDirective: 2546 break; 2547 } 2548 } 2549 2550 void EmitData(raw_ostream& Out, key_type_ref, 2551 data_type Lookup, unsigned DataLen) { 2552 uint64_t Start = Out.tell(); (void)Start; 2553 clang::io::Emit16(Out, Lookup.second - Lookup.first); 2554 for (; Lookup.first != Lookup.second; ++Lookup.first) 2555 clang::io::Emit32(Out, Writer.GetDeclRef(*Lookup.first)); 2556 2557 assert(Out.tell() - Start == DataLen && "Data length is wrong"); 2558 } 2559}; 2560} // end anonymous namespace 2561 2562/// \brief Write the block containing all of the declaration IDs 2563/// visible from the given DeclContext. 2564/// 2565/// \returns the offset of the DECL_CONTEXT_VISIBLE block within the 2566/// bitstream, or 0 if no block was written. 2567uint64_t ASTWriter::WriteDeclContextVisibleBlock(ASTContext &Context, 2568 DeclContext *DC) { 2569 if (DC->getPrimaryContext() != DC) 2570 return 0; 2571 2572 // Since there is no name lookup into functions or methods, don't bother to 2573 // build a visible-declarations table for these entities. 2574 if (DC->isFunctionOrMethod()) 2575 return 0; 2576 2577 // If not in C++, we perform name lookup for the translation unit via the 2578 // IdentifierInfo chains, don't bother to build a visible-declarations table. 2579 // FIXME: In C++ we need the visible declarations in order to "see" the 2580 // friend declarations, is there a way to do this without writing the table ? 2581 if (DC->isTranslationUnit() && !Context.getLangOptions().CPlusPlus) 2582 return 0; 2583 2584 // Force the DeclContext to build a its name-lookup table. 2585 if (DC->hasExternalVisibleStorage()) 2586 DC->MaterializeVisibleDeclsFromExternalStorage(); 2587 else 2588 DC->lookup(DeclarationName()); 2589 2590 // Serialize the contents of the mapping used for lookup. Note that, 2591 // although we have two very different code paths, the serialized 2592 // representation is the same for both cases: a declaration name, 2593 // followed by a size, followed by references to the visible 2594 // declarations that have that name. 2595 uint64_t Offset = Stream.GetCurrentBitNo(); 2596 StoredDeclsMap *Map = static_cast<StoredDeclsMap*>(DC->getLookupPtr()); 2597 if (!Map || Map->empty()) 2598 return 0; 2599 2600 OnDiskChainedHashTableGenerator<ASTDeclContextNameLookupTrait> Generator; 2601 ASTDeclContextNameLookupTrait Trait(*this); 2602 2603 // Create the on-disk hash table representation. 2604 for (StoredDeclsMap::iterator D = Map->begin(), DEnd = Map->end(); 2605 D != DEnd; ++D) { 2606 DeclarationName Name = D->first; 2607 DeclContext::lookup_result Result = D->second.getLookupResult(); 2608 Generator.insert(Name, Result, Trait); 2609 } 2610 2611 // Create the on-disk hash table in a buffer. 2612 llvm::SmallString<4096> LookupTable; 2613 uint32_t BucketOffset; 2614 { 2615 llvm::raw_svector_ostream Out(LookupTable); 2616 // Make sure that no bucket is at offset 0 2617 clang::io::Emit32(Out, 0); 2618 BucketOffset = Generator.Emit(Out, Trait); 2619 } 2620 2621 // Write the lookup table 2622 RecordData Record; 2623 Record.push_back(DECL_CONTEXT_VISIBLE); 2624 Record.push_back(BucketOffset); 2625 Stream.EmitRecordWithBlob(DeclContextVisibleLookupAbbrev, Record, 2626 LookupTable.str()); 2627 2628 Stream.EmitRecord(DECL_CONTEXT_VISIBLE, Record); 2629 ++NumVisibleDeclContexts; 2630 return Offset; 2631} 2632 2633/// \brief Write an UPDATE_VISIBLE block for the given context. 2634/// 2635/// UPDATE_VISIBLE blocks contain the declarations that are added to an existing 2636/// DeclContext in a dependent AST file. As such, they only exist for the TU 2637/// (in C++) and for namespaces. 2638void ASTWriter::WriteDeclContextVisibleUpdate(const DeclContext *DC) { 2639 StoredDeclsMap *Map = static_cast<StoredDeclsMap*>(DC->getLookupPtr()); 2640 if (!Map || Map->empty()) 2641 return; 2642 2643 OnDiskChainedHashTableGenerator<ASTDeclContextNameLookupTrait> Generator; 2644 ASTDeclContextNameLookupTrait Trait(*this); 2645 2646 // Create the hash table. 2647 for (StoredDeclsMap::iterator D = Map->begin(), DEnd = Map->end(); 2648 D != DEnd; ++D) { 2649 DeclarationName Name = D->first; 2650 DeclContext::lookup_result Result = D->second.getLookupResult(); 2651 // For any name that appears in this table, the results are complete, i.e. 2652 // they overwrite results from previous PCHs. Merging is always a mess. 2653 Generator.insert(Name, Result, Trait); 2654 } 2655 2656 // Create the on-disk hash table in a buffer. 2657 llvm::SmallString<4096> LookupTable; 2658 uint32_t BucketOffset; 2659 { 2660 llvm::raw_svector_ostream Out(LookupTable); 2661 // Make sure that no bucket is at offset 0 2662 clang::io::Emit32(Out, 0); 2663 BucketOffset = Generator.Emit(Out, Trait); 2664 } 2665 2666 // Write the lookup table 2667 RecordData Record; 2668 Record.push_back(UPDATE_VISIBLE); 2669 Record.push_back(getDeclID(cast<Decl>(DC))); 2670 Record.push_back(BucketOffset); 2671 Stream.EmitRecordWithBlob(UpdateVisibleAbbrev, Record, LookupTable.str()); 2672} 2673 2674/// \brief Write an FP_PRAGMA_OPTIONS block for the given FPOptions. 2675void ASTWriter::WriteFPPragmaOptions(const FPOptions &Opts) { 2676 RecordData Record; 2677 Record.push_back(Opts.fp_contract); 2678 Stream.EmitRecord(FP_PRAGMA_OPTIONS, Record); 2679} 2680 2681/// \brief Write an OPENCL_EXTENSIONS block for the given OpenCLOptions. 2682void ASTWriter::WriteOpenCLExtensions(Sema &SemaRef) { 2683 if (!SemaRef.Context.getLangOptions().OpenCL) 2684 return; 2685 2686 const OpenCLOptions &Opts = SemaRef.getOpenCLOptions(); 2687 RecordData Record; 2688#define OPENCLEXT(nm) Record.push_back(Opts.nm); 2689#include "clang/Basic/OpenCLExtensions.def" 2690 Stream.EmitRecord(OPENCL_EXTENSIONS, Record); 2691} 2692 2693//===----------------------------------------------------------------------===// 2694// General Serialization Routines 2695//===----------------------------------------------------------------------===// 2696 2697/// \brief Write a record containing the given attributes. 2698void ASTWriter::WriteAttributes(const AttrVec &Attrs, RecordDataImpl &Record) { 2699 Record.push_back(Attrs.size()); 2700 for (AttrVec::const_iterator i = Attrs.begin(), e = Attrs.end(); i != e; ++i){ 2701 const Attr * A = *i; 2702 Record.push_back(A->getKind()); // FIXME: stable encoding, target attrs 2703 AddSourceLocation(A->getLocation(), Record); 2704 2705#include "clang/Serialization/AttrPCHWrite.inc" 2706 2707 } 2708} 2709 2710void ASTWriter::AddString(StringRef Str, RecordDataImpl &Record) { 2711 Record.push_back(Str.size()); 2712 Record.insert(Record.end(), Str.begin(), Str.end()); 2713} 2714 2715void ASTWriter::AddVersionTuple(const VersionTuple &Version, 2716 RecordDataImpl &Record) { 2717 Record.push_back(Version.getMajor()); 2718 if (llvm::Optional<unsigned> Minor = Version.getMinor()) 2719 Record.push_back(*Minor + 1); 2720 else 2721 Record.push_back(0); 2722 if (llvm::Optional<unsigned> Subminor = Version.getSubminor()) 2723 Record.push_back(*Subminor + 1); 2724 else 2725 Record.push_back(0); 2726} 2727 2728/// \brief Note that the identifier II occurs at the given offset 2729/// within the identifier table. 2730void ASTWriter::SetIdentifierOffset(const IdentifierInfo *II, uint32_t Offset) { 2731 IdentID ID = IdentifierIDs[II]; 2732 // Only store offsets new to this AST file. Other identifier names are looked 2733 // up earlier in the chain and thus don't need an offset. 2734 if (ID >= FirstIdentID) 2735 IdentifierOffsets[ID - FirstIdentID] = Offset; 2736} 2737 2738/// \brief Note that the selector Sel occurs at the given offset 2739/// within the method pool/selector table. 2740void ASTWriter::SetSelectorOffset(Selector Sel, uint32_t Offset) { 2741 unsigned ID = SelectorIDs[Sel]; 2742 assert(ID && "Unknown selector"); 2743 // Don't record offsets for selectors that are also available in a different 2744 // file. 2745 if (ID < FirstSelectorID) 2746 return; 2747 SelectorOffsets[ID - FirstSelectorID] = Offset; 2748} 2749 2750ASTWriter::ASTWriter(llvm::BitstreamWriter &Stream) 2751 : Stream(Stream), Chain(0), SerializationListener(0), 2752 FirstDeclID(NUM_PREDEF_DECL_IDS), NextDeclID(FirstDeclID), 2753 FirstTypeID(NUM_PREDEF_TYPE_IDS), NextTypeID(FirstTypeID), 2754 FirstIdentID(NUM_PREDEF_IDENT_IDS), NextIdentID(FirstIdentID), 2755 FirstSelectorID(NUM_PREDEF_SELECTOR_IDS), NextSelectorID(FirstSelectorID), 2756 FirstMacroID(NUM_PREDEF_MACRO_IDS), NextMacroID(FirstMacroID), 2757 CollectedStmts(&StmtsToEmit), 2758 NumStatements(0), NumMacros(0), NumLexicalDeclContexts(0), 2759 NumVisibleDeclContexts(0), 2760 NextCXXBaseSpecifiersID(1), 2761 DeclParmVarAbbrev(0), DeclContextLexicalAbbrev(0), 2762 DeclContextVisibleLookupAbbrev(0), UpdateVisibleAbbrev(0), 2763 DeclRefExprAbbrev(0), CharacterLiteralAbbrev(0), 2764 DeclRecordAbbrev(0), IntegerLiteralAbbrev(0), 2765 DeclTypedefAbbrev(0), 2766 DeclVarAbbrev(0), DeclFieldAbbrev(0), 2767 DeclEnumAbbrev(0), DeclObjCIvarAbbrev(0) 2768{ 2769} 2770 2771void ASTWriter::WriteAST(Sema &SemaRef, MemorizeStatCalls *StatCalls, 2772 const std::string &OutputFile, 2773 StringRef isysroot) { 2774 // Emit the file header. 2775 Stream.Emit((unsigned)'C', 8); 2776 Stream.Emit((unsigned)'P', 8); 2777 Stream.Emit((unsigned)'C', 8); 2778 Stream.Emit((unsigned)'H', 8); 2779 2780 WriteBlockInfoBlock(); 2781 2782 if (Chain) 2783 WriteASTChain(SemaRef, StatCalls, isysroot); 2784 else 2785 WriteASTCore(SemaRef, StatCalls, isysroot, OutputFile); 2786} 2787 2788template<typename Vector> 2789static void AddLazyVectorDecls(ASTWriter &Writer, Vector &Vec, 2790 ASTWriter::RecordData &Record) { 2791 for (typename Vector::iterator I = Vec.begin(0, true), E = Vec.end(); 2792 I != E; ++I) { 2793 Writer.AddDeclRef(*I, Record); 2794 } 2795} 2796 2797void ASTWriter::WriteASTCore(Sema &SemaRef, MemorizeStatCalls *StatCalls, 2798 StringRef isysroot, 2799 const std::string &OutputFile) { 2800 using namespace llvm; 2801 2802 ASTContext &Context = SemaRef.Context; 2803 Preprocessor &PP = SemaRef.PP; 2804 2805 // The translation unit is the first declaration we'll emit. 2806 DeclIDs[Context.getTranslationUnitDecl()] = 1; 2807 ++NextDeclID; 2808 DeclTypesToEmit.push(Context.getTranslationUnitDecl()); 2809 2810 // Make sure that we emit IdentifierInfos (and any attached 2811 // declarations) for builtins. 2812 { 2813 IdentifierTable &Table = PP.getIdentifierTable(); 2814 SmallVector<const char *, 32> BuiltinNames; 2815 Context.BuiltinInfo.GetBuiltinNames(BuiltinNames, 2816 Context.getLangOptions().NoBuiltin); 2817 for (unsigned I = 0, N = BuiltinNames.size(); I != N; ++I) 2818 getIdentifierRef(&Table.get(BuiltinNames[I])); 2819 } 2820 2821 // Build a record containing all of the tentative definitions in this file, in 2822 // TentativeDefinitions order. Generally, this record will be empty for 2823 // headers. 2824 RecordData TentativeDefinitions; 2825 AddLazyVectorDecls(*this, SemaRef.TentativeDefinitions, TentativeDefinitions); 2826 2827 // Build a record containing all of the file scoped decls in this file. 2828 RecordData UnusedFileScopedDecls; 2829 AddLazyVectorDecls(*this, SemaRef.UnusedFileScopedDecls, 2830 UnusedFileScopedDecls); 2831 2832 RecordData DelegatingCtorDecls; 2833 AddLazyVectorDecls(*this, SemaRef.DelegatingCtorDecls, DelegatingCtorDecls); 2834 2835 RecordData WeakUndeclaredIdentifiers; 2836 if (!SemaRef.WeakUndeclaredIdentifiers.empty()) { 2837 for (llvm::DenseMap<IdentifierInfo*,WeakInfo>::iterator 2838 I = SemaRef.WeakUndeclaredIdentifiers.begin(), 2839 E = SemaRef.WeakUndeclaredIdentifiers.end(); I != E; ++I) { 2840 AddIdentifierRef(I->first, WeakUndeclaredIdentifiers); 2841 AddIdentifierRef(I->second.getAlias(), WeakUndeclaredIdentifiers); 2842 AddSourceLocation(I->second.getLocation(), WeakUndeclaredIdentifiers); 2843 WeakUndeclaredIdentifiers.push_back(I->second.getUsed()); 2844 } 2845 } 2846 2847 // Build a record containing all of the locally-scoped external 2848 // declarations in this header file. Generally, this record will be 2849 // empty. 2850 RecordData LocallyScopedExternalDecls; 2851 // FIXME: This is filling in the AST file in densemap order which is 2852 // nondeterminstic! 2853 for (llvm::DenseMap<DeclarationName, NamedDecl *>::iterator 2854 TD = SemaRef.LocallyScopedExternalDecls.begin(), 2855 TDEnd = SemaRef.LocallyScopedExternalDecls.end(); 2856 TD != TDEnd; ++TD) { 2857 if (TD->second->getPCHLevel() == 0) 2858 AddDeclRef(TD->second, LocallyScopedExternalDecls); 2859 } 2860 2861 // Build a record containing all of the ext_vector declarations. 2862 RecordData ExtVectorDecls; 2863 AddLazyVectorDecls(*this, SemaRef.ExtVectorDecls, ExtVectorDecls); 2864 2865 // Build a record containing all of the VTable uses information. 2866 RecordData VTableUses; 2867 if (!SemaRef.VTableUses.empty()) { 2868 for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I) { 2869 AddDeclRef(SemaRef.VTableUses[I].first, VTableUses); 2870 AddSourceLocation(SemaRef.VTableUses[I].second, VTableUses); 2871 VTableUses.push_back(SemaRef.VTablesUsed[SemaRef.VTableUses[I].first]); 2872 } 2873 } 2874 2875 // Build a record containing all of dynamic classes declarations. 2876 RecordData DynamicClasses; 2877 AddLazyVectorDecls(*this, SemaRef.DynamicClasses, DynamicClasses); 2878 2879 // Build a record containing all of pending implicit instantiations. 2880 RecordData PendingInstantiations; 2881 for (std::deque<Sema::PendingImplicitInstantiation>::iterator 2882 I = SemaRef.PendingInstantiations.begin(), 2883 N = SemaRef.PendingInstantiations.end(); I != N; ++I) { 2884 AddDeclRef(I->first, PendingInstantiations); 2885 AddSourceLocation(I->second, PendingInstantiations); 2886 } 2887 assert(SemaRef.PendingLocalImplicitInstantiations.empty() && 2888 "There are local ones at end of translation unit!"); 2889 2890 // Build a record containing some declaration references. 2891 RecordData SemaDeclRefs; 2892 if (SemaRef.StdNamespace || SemaRef.StdBadAlloc) { 2893 AddDeclRef(SemaRef.getStdNamespace(), SemaDeclRefs); 2894 AddDeclRef(SemaRef.getStdBadAlloc(), SemaDeclRefs); 2895 } 2896 2897 RecordData CUDASpecialDeclRefs; 2898 if (Context.getcudaConfigureCallDecl()) { 2899 AddDeclRef(Context.getcudaConfigureCallDecl(), CUDASpecialDeclRefs); 2900 } 2901 2902 // Build a record containing all of the known namespaces. 2903 RecordData KnownNamespaces; 2904 for (llvm::DenseMap<NamespaceDecl*, bool>::iterator 2905 I = SemaRef.KnownNamespaces.begin(), 2906 IEnd = SemaRef.KnownNamespaces.end(); 2907 I != IEnd; ++I) { 2908 if (!I->second) 2909 AddDeclRef(I->first, KnownNamespaces); 2910 } 2911 2912 // Write the remaining AST contents. 2913 RecordData Record; 2914 Stream.EnterSubblock(AST_BLOCK_ID, 5); 2915 WriteMetadata(Context, isysroot, OutputFile); 2916 WriteLanguageOptions(Context.getLangOptions()); 2917 if (StatCalls && isysroot.empty()) 2918 WriteStatCache(*StatCalls); 2919 WriteSourceManagerBlock(Context.getSourceManager(), PP, isysroot); 2920 2921 // Form the record of special types. 2922 RecordData SpecialTypes; 2923 AddTypeRef(Context.getBuiltinVaListType(), SpecialTypes); 2924 AddTypeRef(Context.getObjCIdType(), SpecialTypes); 2925 AddTypeRef(Context.getObjCSelType(), SpecialTypes); 2926 AddTypeRef(Context.getObjCProtoType(), SpecialTypes); 2927 AddTypeRef(Context.getObjCClassType(), SpecialTypes); 2928 AddTypeRef(Context.getRawCFConstantStringType(), SpecialTypes); 2929 AddTypeRef(Context.getRawObjCFastEnumerationStateType(), SpecialTypes); 2930 AddTypeRef(Context.getFILEType(), SpecialTypes); 2931 AddTypeRef(Context.getjmp_bufType(), SpecialTypes); 2932 AddTypeRef(Context.getsigjmp_bufType(), SpecialTypes); 2933 AddTypeRef(Context.ObjCIdRedefinitionType, SpecialTypes); 2934 AddTypeRef(Context.ObjCClassRedefinitionType, SpecialTypes); 2935 AddTypeRef(Context.getRawBlockdescriptorType(), SpecialTypes); 2936 AddTypeRef(Context.getRawBlockdescriptorExtendedType(), SpecialTypes); 2937 AddTypeRef(Context.ObjCSelRedefinitionType, SpecialTypes); 2938 AddTypeRef(Context.getRawNSConstantStringType(), SpecialTypes); 2939 SpecialTypes.push_back(Context.isInt128Installed()); 2940 AddTypeRef(Context.AutoDeductTy, SpecialTypes); 2941 AddTypeRef(Context.AutoRRefDeductTy, SpecialTypes); 2942 2943 // Keep writing types and declarations until all types and 2944 // declarations have been written. 2945 Stream.EnterSubblock(DECLTYPES_BLOCK_ID, NUM_ALLOWED_ABBREVS_SIZE); 2946 WriteDeclsBlockAbbrevs(); 2947 while (!DeclTypesToEmit.empty()) { 2948 DeclOrType DOT = DeclTypesToEmit.front(); 2949 DeclTypesToEmit.pop(); 2950 if (DOT.isType()) 2951 WriteType(DOT.getType()); 2952 else 2953 WriteDecl(Context, DOT.getDecl()); 2954 } 2955 Stream.ExitBlock(); 2956 2957 WritePreprocessor(PP); 2958 WriteHeaderSearch(PP.getHeaderSearchInfo(), isysroot); 2959 WriteSelectors(SemaRef); 2960 WriteReferencedSelectorsPool(SemaRef); 2961 WriteIdentifierTable(PP); 2962 WriteFPPragmaOptions(SemaRef.getFPOptions()); 2963 WriteOpenCLExtensions(SemaRef); 2964 2965 WriteTypeDeclOffsets(); 2966 WritePragmaDiagnosticMappings(Context.getDiagnostics()); 2967 2968 WriteCXXBaseSpecifiersOffsets(); 2969 2970 Stream.EmitRecord(SPECIAL_TYPES, SpecialTypes); 2971 2972 // Write the record containing external, unnamed definitions. 2973 if (!ExternalDefinitions.empty()) 2974 Stream.EmitRecord(EXTERNAL_DEFINITIONS, ExternalDefinitions); 2975 2976 // Write the record containing tentative definitions. 2977 if (!TentativeDefinitions.empty()) 2978 Stream.EmitRecord(TENTATIVE_DEFINITIONS, TentativeDefinitions); 2979 2980 // Write the record containing unused file scoped decls. 2981 if (!UnusedFileScopedDecls.empty()) 2982 Stream.EmitRecord(UNUSED_FILESCOPED_DECLS, UnusedFileScopedDecls); 2983 2984 // Write the record containing weak undeclared identifiers. 2985 if (!WeakUndeclaredIdentifiers.empty()) 2986 Stream.EmitRecord(WEAK_UNDECLARED_IDENTIFIERS, 2987 WeakUndeclaredIdentifiers); 2988 2989 // Write the record containing locally-scoped external definitions. 2990 if (!LocallyScopedExternalDecls.empty()) 2991 Stream.EmitRecord(LOCALLY_SCOPED_EXTERNAL_DECLS, 2992 LocallyScopedExternalDecls); 2993 2994 // Write the record containing ext_vector type names. 2995 if (!ExtVectorDecls.empty()) 2996 Stream.EmitRecord(EXT_VECTOR_DECLS, ExtVectorDecls); 2997 2998 // Write the record containing VTable uses information. 2999 if (!VTableUses.empty()) 3000 Stream.EmitRecord(VTABLE_USES, VTableUses); 3001 3002 // Write the record containing dynamic classes declarations. 3003 if (!DynamicClasses.empty()) 3004 Stream.EmitRecord(DYNAMIC_CLASSES, DynamicClasses); 3005 3006 // Write the record containing pending implicit instantiations. 3007 if (!PendingInstantiations.empty()) 3008 Stream.EmitRecord(PENDING_IMPLICIT_INSTANTIATIONS, PendingInstantiations); 3009 3010 // Write the record containing declaration references of Sema. 3011 if (!SemaDeclRefs.empty()) 3012 Stream.EmitRecord(SEMA_DECL_REFS, SemaDeclRefs); 3013 3014 // Write the record containing CUDA-specific declaration references. 3015 if (!CUDASpecialDeclRefs.empty()) 3016 Stream.EmitRecord(CUDA_SPECIAL_DECL_REFS, CUDASpecialDeclRefs); 3017 3018 // Write the delegating constructors. 3019 if (!DelegatingCtorDecls.empty()) 3020 Stream.EmitRecord(DELEGATING_CTORS, DelegatingCtorDecls); 3021 3022 // Write the known namespaces. 3023 if (!KnownNamespaces.empty()) 3024 Stream.EmitRecord(KNOWN_NAMESPACES, KnownNamespaces); 3025 3026 // Some simple statistics 3027 Record.clear(); 3028 Record.push_back(NumStatements); 3029 Record.push_back(NumMacros); 3030 Record.push_back(NumLexicalDeclContexts); 3031 Record.push_back(NumVisibleDeclContexts); 3032 Stream.EmitRecord(STATISTICS, Record); 3033 Stream.ExitBlock(); 3034} 3035 3036void ASTWriter::WriteASTChain(Sema &SemaRef, MemorizeStatCalls *StatCalls, 3037 StringRef isysroot) { 3038 using namespace llvm; 3039 3040 ASTContext &Context = SemaRef.Context; 3041 Preprocessor &PP = SemaRef.PP; 3042 3043 RecordData Record; 3044 Stream.EnterSubblock(AST_BLOCK_ID, 5); 3045 WriteMetadata(Context, isysroot, ""); 3046 if (StatCalls && isysroot.empty()) 3047 WriteStatCache(*StatCalls); 3048 // FIXME: Source manager block should only write new stuff, which could be 3049 // done by tracking the largest ID in the chain 3050 WriteSourceManagerBlock(Context.getSourceManager(), PP, isysroot); 3051 3052 // Write the mapping information describing our module dependencies and how 3053 // each of those modules were mapped into our own offset/ID space, so that 3054 // the reader can build the appropriate mapping to its own offset/ID space. 3055 // The map consists solely of a blob with the following format: 3056 // *(module-name-len:i16 module-name:len*i8 3057 // source-location-offset:i32 3058 // identifier-id:i32 3059 // preprocessed-entity-id:i32 3060 // macro-definition-id:i32 3061 // selector-id:i32 3062 // declaration-id:i32 3063 // c++-base-specifiers-id:i32 3064 // type-id:i32) 3065 // 3066 llvm::BitCodeAbbrev *Abbrev = new BitCodeAbbrev(); 3067 Abbrev->Add(BitCodeAbbrevOp(MODULE_OFFSET_MAP)); 3068 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); 3069 unsigned ModuleOffsetMapAbbrev = Stream.EmitAbbrev(Abbrev); 3070 llvm::SmallString<2048> Buffer; 3071 { 3072 llvm::raw_svector_ostream Out(Buffer); 3073 for (ModuleManager::ModuleConstIterator M = Chain->ModuleMgr.begin(), 3074 MEnd = Chain->ModuleMgr.end(); 3075 M != MEnd; ++M) { 3076 StringRef FileName = (*M)->FileName; 3077 io::Emit16(Out, FileName.size()); 3078 Out.write(FileName.data(), FileName.size()); 3079 io::Emit32(Out, (*M)->SLocEntryBaseOffset); 3080 io::Emit32(Out, (*M)->BaseIdentifierID); 3081 io::Emit32(Out, (*M)->BasePreprocessedEntityID); 3082 io::Emit32(Out, (*M)->BaseMacroDefinitionID); 3083 io::Emit32(Out, (*M)->BaseSelectorID); 3084 io::Emit32(Out, (*M)->BaseDeclID); 3085 io::Emit32(Out, (*M)->BaseTypeIndex); 3086 } 3087 } 3088 Record.clear(); 3089 Record.push_back(MODULE_OFFSET_MAP); 3090 Stream.EmitRecordWithBlob(ModuleOffsetMapAbbrev, Record, 3091 Buffer.data(), Buffer.size()); 3092 3093 // The special types are in the chained PCH. 3094 3095 // We don't start with the translation unit, but with its decls that 3096 // don't come from the chained PCH. 3097 const TranslationUnitDecl *TU = Context.getTranslationUnitDecl(); 3098 SmallVector<KindDeclIDPair, 64> NewGlobalDecls; 3099 for (DeclContext::decl_iterator I = TU->noload_decls_begin(), 3100 E = TU->noload_decls_end(); 3101 I != E; ++I) { 3102 if ((*I)->getPCHLevel() == 0) 3103 NewGlobalDecls.push_back(std::make_pair((*I)->getKind(), GetDeclRef(*I))); 3104 else if ((*I)->isChangedSinceDeserialization()) 3105 (void)GetDeclRef(*I); // Make sure it's written, but don't record it. 3106 } 3107 // We also need to write a lexical updates block for the TU. 3108 llvm::BitCodeAbbrev *Abv = new llvm::BitCodeAbbrev(); 3109 Abv->Add(llvm::BitCodeAbbrevOp(TU_UPDATE_LEXICAL)); 3110 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob)); 3111 unsigned TuUpdateLexicalAbbrev = Stream.EmitAbbrev(Abv); 3112 Record.clear(); 3113 Record.push_back(TU_UPDATE_LEXICAL); 3114 Stream.EmitRecordWithBlob(TuUpdateLexicalAbbrev, Record, 3115 data(NewGlobalDecls)); 3116 // And a visible updates block for the DeclContexts. 3117 Abv = new llvm::BitCodeAbbrev(); 3118 Abv->Add(llvm::BitCodeAbbrevOp(UPDATE_VISIBLE)); 3119 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6)); 3120 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Fixed, 32)); 3121 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob)); 3122 UpdateVisibleAbbrev = Stream.EmitAbbrev(Abv); 3123 WriteDeclContextVisibleUpdate(TU); 3124 3125 // Build a record containing all of the new tentative definitions in this 3126 // file, in TentativeDefinitions order. 3127 RecordData TentativeDefinitions; 3128 AddLazyVectorDecls(*this, SemaRef.TentativeDefinitions, TentativeDefinitions); 3129 3130 // Build a record containing all of the file scoped decls in this file. 3131 RecordData UnusedFileScopedDecls; 3132 AddLazyVectorDecls(*this, SemaRef.UnusedFileScopedDecls, 3133 UnusedFileScopedDecls); 3134 3135 // Build a record containing all of the delegating constructor decls in this 3136 // file. 3137 RecordData DelegatingCtorDecls; 3138 AddLazyVectorDecls(*this, SemaRef.DelegatingCtorDecls, DelegatingCtorDecls); 3139 3140 // We write the entire table, overwriting the tables from the chain. 3141 RecordData WeakUndeclaredIdentifiers; 3142 if (!SemaRef.WeakUndeclaredIdentifiers.empty()) { 3143 for (llvm::DenseMap<IdentifierInfo*,WeakInfo>::iterator 3144 I = SemaRef.WeakUndeclaredIdentifiers.begin(), 3145 E = SemaRef.WeakUndeclaredIdentifiers.end(); I != E; ++I) { 3146 AddIdentifierRef(I->first, WeakUndeclaredIdentifiers); 3147 AddIdentifierRef(I->second.getAlias(), WeakUndeclaredIdentifiers); 3148 AddSourceLocation(I->second.getLocation(), WeakUndeclaredIdentifiers); 3149 WeakUndeclaredIdentifiers.push_back(I->second.getUsed()); 3150 } 3151 } 3152 3153 // Build a record containing all of the locally-scoped external 3154 // declarations in this header file. Generally, this record will be 3155 // empty. 3156 RecordData LocallyScopedExternalDecls; 3157 // FIXME: This is filling in the AST file in densemap order which is 3158 // nondeterminstic! 3159 for (llvm::DenseMap<DeclarationName, NamedDecl *>::iterator 3160 TD = SemaRef.LocallyScopedExternalDecls.begin(), 3161 TDEnd = SemaRef.LocallyScopedExternalDecls.end(); 3162 TD != TDEnd; ++TD) { 3163 if (TD->second->getPCHLevel() == 0) 3164 AddDeclRef(TD->second, LocallyScopedExternalDecls); 3165 } 3166 3167 // Build a record containing all of the ext_vector declarations. 3168 RecordData ExtVectorDecls; 3169 AddLazyVectorDecls(*this, SemaRef.ExtVectorDecls, ExtVectorDecls); 3170 3171 // Build a record containing all of the VTable uses information. 3172 // We write everything here, because it's too hard to determine whether 3173 // a use is new to this part. 3174 RecordData VTableUses; 3175 if (!SemaRef.VTableUses.empty()) { 3176 for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I) { 3177 AddDeclRef(SemaRef.VTableUses[I].first, VTableUses); 3178 AddSourceLocation(SemaRef.VTableUses[I].second, VTableUses); 3179 VTableUses.push_back(SemaRef.VTablesUsed[SemaRef.VTableUses[I].first]); 3180 } 3181 } 3182 3183 // Build a record containing all of dynamic classes declarations. 3184 RecordData DynamicClasses; 3185 AddLazyVectorDecls(*this, SemaRef.DynamicClasses, DynamicClasses); 3186 3187 // Build a record containing all of pending implicit instantiations. 3188 RecordData PendingInstantiations; 3189 for (std::deque<Sema::PendingImplicitInstantiation>::iterator 3190 I = SemaRef.PendingInstantiations.begin(), 3191 N = SemaRef.PendingInstantiations.end(); I != N; ++I) { 3192 AddDeclRef(I->first, PendingInstantiations); 3193 AddSourceLocation(I->second, PendingInstantiations); 3194 } 3195 assert(SemaRef.PendingLocalImplicitInstantiations.empty() && 3196 "There are local ones at end of translation unit!"); 3197 3198 // Build a record containing some declaration references. 3199 // It's not worth the effort to avoid duplication here. 3200 RecordData SemaDeclRefs; 3201 if (SemaRef.StdNamespace || SemaRef.StdBadAlloc) { 3202 AddDeclRef(SemaRef.getStdNamespace(), SemaDeclRefs); 3203 AddDeclRef(SemaRef.getStdBadAlloc(), SemaDeclRefs); 3204 } 3205 3206 Stream.EnterSubblock(DECLTYPES_BLOCK_ID, NUM_ALLOWED_ABBREVS_SIZE); 3207 WriteDeclsBlockAbbrevs(); 3208 for (DeclsToRewriteTy::iterator 3209 I = DeclsToRewrite.begin(), E = DeclsToRewrite.end(); I != E; ++I) 3210 DeclTypesToEmit.push(const_cast<Decl*>(*I)); 3211 while (!DeclTypesToEmit.empty()) { 3212 DeclOrType DOT = DeclTypesToEmit.front(); 3213 DeclTypesToEmit.pop(); 3214 if (DOT.isType()) 3215 WriteType(DOT.getType()); 3216 else 3217 WriteDecl(Context, DOT.getDecl()); 3218 } 3219 Stream.ExitBlock(); 3220 3221 WritePreprocessor(PP); 3222 WriteSelectors(SemaRef); 3223 WriteReferencedSelectorsPool(SemaRef); 3224 WriteIdentifierTable(PP); 3225 WriteFPPragmaOptions(SemaRef.getFPOptions()); 3226 WriteOpenCLExtensions(SemaRef); 3227 3228 WriteTypeDeclOffsets(); 3229 // FIXME: For chained PCH only write the new mappings (we currently 3230 // write all of them again). 3231 WritePragmaDiagnosticMappings(Context.getDiagnostics()); 3232 3233 WriteCXXBaseSpecifiersOffsets(); 3234 3235 /// Build a record containing first declarations from a chained PCH and the 3236 /// most recent declarations in this AST that they point to. 3237 RecordData FirstLatestDeclIDs; 3238 for (FirstLatestDeclMap::iterator 3239 I = FirstLatestDecls.begin(), E = FirstLatestDecls.end(); I != E; ++I) { 3240 assert(I->first->getPCHLevel() > I->second->getPCHLevel() && 3241 "Expected first & second to be in different PCHs"); 3242 AddDeclRef(I->first, FirstLatestDeclIDs); 3243 AddDeclRef(I->second, FirstLatestDeclIDs); 3244 } 3245 if (!FirstLatestDeclIDs.empty()) 3246 Stream.EmitRecord(REDECLS_UPDATE_LATEST, FirstLatestDeclIDs); 3247 3248 // Write the record containing external, unnamed definitions. 3249 if (!ExternalDefinitions.empty()) 3250 Stream.EmitRecord(EXTERNAL_DEFINITIONS, ExternalDefinitions); 3251 3252 // Write the record containing tentative definitions. 3253 if (!TentativeDefinitions.empty()) 3254 Stream.EmitRecord(TENTATIVE_DEFINITIONS, TentativeDefinitions); 3255 3256 // Write the record containing unused file scoped decls. 3257 if (!UnusedFileScopedDecls.empty()) 3258 Stream.EmitRecord(UNUSED_FILESCOPED_DECLS, UnusedFileScopedDecls); 3259 3260 // Write the record containing weak undeclared identifiers. 3261 if (!WeakUndeclaredIdentifiers.empty()) 3262 Stream.EmitRecord(WEAK_UNDECLARED_IDENTIFIERS, 3263 WeakUndeclaredIdentifiers); 3264 3265 // Write the record containing locally-scoped external definitions. 3266 if (!LocallyScopedExternalDecls.empty()) 3267 Stream.EmitRecord(LOCALLY_SCOPED_EXTERNAL_DECLS, 3268 LocallyScopedExternalDecls); 3269 3270 // Write the record containing ext_vector type names. 3271 if (!ExtVectorDecls.empty()) 3272 Stream.EmitRecord(EXT_VECTOR_DECLS, ExtVectorDecls); 3273 3274 // Write the record containing VTable uses information. 3275 if (!VTableUses.empty()) 3276 Stream.EmitRecord(VTABLE_USES, VTableUses); 3277 3278 // Write the record containing dynamic classes declarations. 3279 if (!DynamicClasses.empty()) 3280 Stream.EmitRecord(DYNAMIC_CLASSES, DynamicClasses); 3281 3282 // Write the record containing pending implicit instantiations. 3283 if (!PendingInstantiations.empty()) 3284 Stream.EmitRecord(PENDING_IMPLICIT_INSTANTIATIONS, PendingInstantiations); 3285 3286 // Write the record containing declaration references of Sema. 3287 if (!SemaDeclRefs.empty()) 3288 Stream.EmitRecord(SEMA_DECL_REFS, SemaDeclRefs); 3289 3290 // Write the delegating constructors. 3291 if (!DelegatingCtorDecls.empty()) 3292 Stream.EmitRecord(DELEGATING_CTORS, DelegatingCtorDecls); 3293 3294 // Write the updates to DeclContexts. 3295 for (llvm::SmallPtrSet<const DeclContext *, 16>::iterator 3296 I = UpdatedDeclContexts.begin(), 3297 E = UpdatedDeclContexts.end(); 3298 I != E; ++I) 3299 WriteDeclContextVisibleUpdate(*I); 3300 3301 WriteDeclUpdatesBlocks(); 3302 3303 Record.clear(); 3304 Record.push_back(NumStatements); 3305 Record.push_back(NumMacros); 3306 Record.push_back(NumLexicalDeclContexts); 3307 Record.push_back(NumVisibleDeclContexts); 3308 WriteDeclReplacementsBlock(); 3309 Stream.EmitRecord(STATISTICS, Record); 3310 Stream.ExitBlock(); 3311} 3312 3313void ASTWriter::WriteDeclUpdatesBlocks() { 3314 if (DeclUpdates.empty()) 3315 return; 3316 3317 RecordData OffsetsRecord; 3318 Stream.EnterSubblock(DECL_UPDATES_BLOCK_ID, NUM_ALLOWED_ABBREVS_SIZE); 3319 for (DeclUpdateMap::iterator 3320 I = DeclUpdates.begin(), E = DeclUpdates.end(); I != E; ++I) { 3321 const Decl *D = I->first; 3322 UpdateRecord &URec = I->second; 3323 3324 if (DeclsToRewrite.count(D)) 3325 continue; // The decl will be written completely,no need to store updates. 3326 3327 uint64_t Offset = Stream.GetCurrentBitNo(); 3328 Stream.EmitRecord(DECL_UPDATES, URec); 3329 3330 OffsetsRecord.push_back(GetDeclRef(D)); 3331 OffsetsRecord.push_back(Offset); 3332 } 3333 Stream.ExitBlock(); 3334 Stream.EmitRecord(DECL_UPDATE_OFFSETS, OffsetsRecord); 3335} 3336 3337void ASTWriter::WriteDeclReplacementsBlock() { 3338 if (ReplacedDecls.empty()) 3339 return; 3340 3341 RecordData Record; 3342 for (SmallVector<std::pair<DeclID, uint64_t>, 16>::iterator 3343 I = ReplacedDecls.begin(), E = ReplacedDecls.end(); I != E; ++I) { 3344 Record.push_back(I->first); 3345 Record.push_back(I->second); 3346 } 3347 Stream.EmitRecord(DECL_REPLACEMENTS, Record); 3348} 3349 3350void ASTWriter::AddSourceLocation(SourceLocation Loc, RecordDataImpl &Record) { 3351 Record.push_back(Loc.getRawEncoding()); 3352} 3353 3354void ASTWriter::AddSourceRange(SourceRange Range, RecordDataImpl &Record) { 3355 AddSourceLocation(Range.getBegin(), Record); 3356 AddSourceLocation(Range.getEnd(), Record); 3357} 3358 3359void ASTWriter::AddAPInt(const llvm::APInt &Value, RecordDataImpl &Record) { 3360 Record.push_back(Value.getBitWidth()); 3361 const uint64_t *Words = Value.getRawData(); 3362 Record.append(Words, Words + Value.getNumWords()); 3363} 3364 3365void ASTWriter::AddAPSInt(const llvm::APSInt &Value, RecordDataImpl &Record) { 3366 Record.push_back(Value.isUnsigned()); 3367 AddAPInt(Value, Record); 3368} 3369 3370void ASTWriter::AddAPFloat(const llvm::APFloat &Value, RecordDataImpl &Record) { 3371 AddAPInt(Value.bitcastToAPInt(), Record); 3372} 3373 3374void ASTWriter::AddIdentifierRef(const IdentifierInfo *II, RecordDataImpl &Record) { 3375 Record.push_back(getIdentifierRef(II)); 3376} 3377 3378IdentID ASTWriter::getIdentifierRef(const IdentifierInfo *II) { 3379 if (II == 0) 3380 return 0; 3381 3382 IdentID &ID = IdentifierIDs[II]; 3383 if (ID == 0) 3384 ID = NextIdentID++; 3385 return ID; 3386} 3387 3388MacroID ASTWriter::getMacroDefinitionID(MacroDefinition *MD) { 3389 if (MD == 0) 3390 return 0; 3391 3392 MacroID &ID = MacroDefinitions[MD]; 3393 if (ID == 0) 3394 ID = NextMacroID++; 3395 return ID; 3396} 3397 3398void ASTWriter::AddSelectorRef(const Selector SelRef, RecordDataImpl &Record) { 3399 Record.push_back(getSelectorRef(SelRef)); 3400} 3401 3402SelectorID ASTWriter::getSelectorRef(Selector Sel) { 3403 if (Sel.getAsOpaquePtr() == 0) { 3404 return 0; 3405 } 3406 3407 SelectorID &SID = SelectorIDs[Sel]; 3408 if (SID == 0 && Chain) { 3409 // This might trigger a ReadSelector callback, which will set the ID for 3410 // this selector. 3411 Chain->LoadSelector(Sel); 3412 } 3413 if (SID == 0) { 3414 SID = NextSelectorID++; 3415 } 3416 return SID; 3417} 3418 3419void ASTWriter::AddCXXTemporary(const CXXTemporary *Temp, RecordDataImpl &Record) { 3420 AddDeclRef(Temp->getDestructor(), Record); 3421} 3422 3423void ASTWriter::AddCXXBaseSpecifiersRef(CXXBaseSpecifier const *Bases, 3424 CXXBaseSpecifier const *BasesEnd, 3425 RecordDataImpl &Record) { 3426 assert(Bases != BasesEnd && "Empty base-specifier sets are not recorded"); 3427 CXXBaseSpecifiersToWrite.push_back( 3428 QueuedCXXBaseSpecifiers(NextCXXBaseSpecifiersID, 3429 Bases, BasesEnd)); 3430 Record.push_back(NextCXXBaseSpecifiersID++); 3431} 3432 3433void ASTWriter::AddTemplateArgumentLocInfo(TemplateArgument::ArgKind Kind, 3434 const TemplateArgumentLocInfo &Arg, 3435 RecordDataImpl &Record) { 3436 switch (Kind) { 3437 case TemplateArgument::Expression: 3438 AddStmt(Arg.getAsExpr()); 3439 break; 3440 case TemplateArgument::Type: 3441 AddTypeSourceInfo(Arg.getAsTypeSourceInfo(), Record); 3442 break; 3443 case TemplateArgument::Template: 3444 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc(), Record); 3445 AddSourceLocation(Arg.getTemplateNameLoc(), Record); 3446 break; 3447 case TemplateArgument::TemplateExpansion: 3448 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc(), Record); 3449 AddSourceLocation(Arg.getTemplateNameLoc(), Record); 3450 AddSourceLocation(Arg.getTemplateEllipsisLoc(), Record); 3451 break; 3452 case TemplateArgument::Null: 3453 case TemplateArgument::Integral: 3454 case TemplateArgument::Declaration: 3455 case TemplateArgument::Pack: 3456 break; 3457 } 3458} 3459 3460void ASTWriter::AddTemplateArgumentLoc(const TemplateArgumentLoc &Arg, 3461 RecordDataImpl &Record) { 3462 AddTemplateArgument(Arg.getArgument(), Record); 3463 3464 if (Arg.getArgument().getKind() == TemplateArgument::Expression) { 3465 bool InfoHasSameExpr 3466 = Arg.getArgument().getAsExpr() == Arg.getLocInfo().getAsExpr(); 3467 Record.push_back(InfoHasSameExpr); 3468 if (InfoHasSameExpr) 3469 return; // Avoid storing the same expr twice. 3470 } 3471 AddTemplateArgumentLocInfo(Arg.getArgument().getKind(), Arg.getLocInfo(), 3472 Record); 3473} 3474 3475void ASTWriter::AddTypeSourceInfo(TypeSourceInfo *TInfo, 3476 RecordDataImpl &Record) { 3477 if (TInfo == 0) { 3478 AddTypeRef(QualType(), Record); 3479 return; 3480 } 3481 3482 AddTypeLoc(TInfo->getTypeLoc(), Record); 3483} 3484 3485void ASTWriter::AddTypeLoc(TypeLoc TL, RecordDataImpl &Record) { 3486 AddTypeRef(TL.getType(), Record); 3487 3488 TypeLocWriter TLW(*this, Record); 3489 for (; !TL.isNull(); TL = TL.getNextTypeLoc()) 3490 TLW.Visit(TL); 3491} 3492 3493void ASTWriter::AddTypeRef(QualType T, RecordDataImpl &Record) { 3494 Record.push_back(GetOrCreateTypeID(T)); 3495} 3496 3497TypeID ASTWriter::GetOrCreateTypeID(QualType T) { 3498 return MakeTypeID(T, 3499 std::bind1st(std::mem_fun(&ASTWriter::GetOrCreateTypeIdx), this)); 3500} 3501 3502TypeID ASTWriter::getTypeID(QualType T) const { 3503 return MakeTypeID(T, 3504 std::bind1st(std::mem_fun(&ASTWriter::getTypeIdx), this)); 3505} 3506 3507TypeIdx ASTWriter::GetOrCreateTypeIdx(QualType T) { 3508 if (T.isNull()) 3509 return TypeIdx(); 3510 assert(!T.getLocalFastQualifiers()); 3511 3512 TypeIdx &Idx = TypeIdxs[T]; 3513 if (Idx.getIndex() == 0) { 3514 // We haven't seen this type before. Assign it a new ID and put it 3515 // into the queue of types to emit. 3516 Idx = TypeIdx(NextTypeID++); 3517 DeclTypesToEmit.push(T); 3518 } 3519 return Idx; 3520} 3521 3522TypeIdx ASTWriter::getTypeIdx(QualType T) const { 3523 if (T.isNull()) 3524 return TypeIdx(); 3525 assert(!T.getLocalFastQualifiers()); 3526 3527 TypeIdxMap::const_iterator I = TypeIdxs.find(T); 3528 assert(I != TypeIdxs.end() && "Type not emitted!"); 3529 return I->second; 3530} 3531 3532void ASTWriter::AddDeclRef(const Decl *D, RecordDataImpl &Record) { 3533 Record.push_back(GetDeclRef(D)); 3534} 3535 3536DeclID ASTWriter::GetDeclRef(const Decl *D) { 3537 if (D == 0) { 3538 return 0; 3539 } 3540 assert(!(reinterpret_cast<uintptr_t>(D) & 0x01) && "Invalid decl pointer"); 3541 DeclID &ID = DeclIDs[D]; 3542 if (ID == 0) { 3543 // We haven't seen this declaration before. Give it a new ID and 3544 // enqueue it in the list of declarations to emit. 3545 ID = NextDeclID++; 3546 DeclTypesToEmit.push(const_cast<Decl *>(D)); 3547 } else if (ID < FirstDeclID && D->isChangedSinceDeserialization()) { 3548 // We don't add it to the replacement collection here, because we don't 3549 // have the offset yet. 3550 DeclTypesToEmit.push(const_cast<Decl *>(D)); 3551 // Reset the flag, so that we don't add this decl multiple times. 3552 const_cast<Decl *>(D)->setChangedSinceDeserialization(false); 3553 } 3554 3555 return ID; 3556} 3557 3558DeclID ASTWriter::getDeclID(const Decl *D) { 3559 if (D == 0) 3560 return 0; 3561 3562 assert(DeclIDs.find(D) != DeclIDs.end() && "Declaration not emitted!"); 3563 return DeclIDs[D]; 3564} 3565 3566void ASTWriter::AddDeclarationName(DeclarationName Name, RecordDataImpl &Record) { 3567 // FIXME: Emit a stable enum for NameKind. 0 = Identifier etc. 3568 Record.push_back(Name.getNameKind()); 3569 switch (Name.getNameKind()) { 3570 case DeclarationName::Identifier: 3571 AddIdentifierRef(Name.getAsIdentifierInfo(), Record); 3572 break; 3573 3574 case DeclarationName::ObjCZeroArgSelector: 3575 case DeclarationName::ObjCOneArgSelector: 3576 case DeclarationName::ObjCMultiArgSelector: 3577 AddSelectorRef(Name.getObjCSelector(), Record); 3578 break; 3579 3580 case DeclarationName::CXXConstructorName: 3581 case DeclarationName::CXXDestructorName: 3582 case DeclarationName::CXXConversionFunctionName: 3583 AddTypeRef(Name.getCXXNameType(), Record); 3584 break; 3585 3586 case DeclarationName::CXXOperatorName: 3587 Record.push_back(Name.getCXXOverloadedOperator()); 3588 break; 3589 3590 case DeclarationName::CXXLiteralOperatorName: 3591 AddIdentifierRef(Name.getCXXLiteralIdentifier(), Record); 3592 break; 3593 3594 case DeclarationName::CXXUsingDirective: 3595 // No extra data to emit 3596 break; 3597 } 3598} 3599 3600void ASTWriter::AddDeclarationNameLoc(const DeclarationNameLoc &DNLoc, 3601 DeclarationName Name, RecordDataImpl &Record) { 3602 switch (Name.getNameKind()) { 3603 case DeclarationName::CXXConstructorName: 3604 case DeclarationName::CXXDestructorName: 3605 case DeclarationName::CXXConversionFunctionName: 3606 AddTypeSourceInfo(DNLoc.NamedType.TInfo, Record); 3607 break; 3608 3609 case DeclarationName::CXXOperatorName: 3610 AddSourceLocation( 3611 SourceLocation::getFromRawEncoding(DNLoc.CXXOperatorName.BeginOpNameLoc), 3612 Record); 3613 AddSourceLocation( 3614 SourceLocation::getFromRawEncoding(DNLoc.CXXOperatorName.EndOpNameLoc), 3615 Record); 3616 break; 3617 3618 case DeclarationName::CXXLiteralOperatorName: 3619 AddSourceLocation( 3620 SourceLocation::getFromRawEncoding(DNLoc.CXXLiteralOperatorName.OpNameLoc), 3621 Record); 3622 break; 3623 3624 case DeclarationName::Identifier: 3625 case DeclarationName::ObjCZeroArgSelector: 3626 case DeclarationName::ObjCOneArgSelector: 3627 case DeclarationName::ObjCMultiArgSelector: 3628 case DeclarationName::CXXUsingDirective: 3629 break; 3630 } 3631} 3632 3633void ASTWriter::AddDeclarationNameInfo(const DeclarationNameInfo &NameInfo, 3634 RecordDataImpl &Record) { 3635 AddDeclarationName(NameInfo.getName(), Record); 3636 AddSourceLocation(NameInfo.getLoc(), Record); 3637 AddDeclarationNameLoc(NameInfo.getInfo(), NameInfo.getName(), Record); 3638} 3639 3640void ASTWriter::AddQualifierInfo(const QualifierInfo &Info, 3641 RecordDataImpl &Record) { 3642 AddNestedNameSpecifierLoc(Info.QualifierLoc, Record); 3643 Record.push_back(Info.NumTemplParamLists); 3644 for (unsigned i=0, e=Info.NumTemplParamLists; i != e; ++i) 3645 AddTemplateParameterList(Info.TemplParamLists[i], Record); 3646} 3647 3648void ASTWriter::AddNestedNameSpecifier(NestedNameSpecifier *NNS, 3649 RecordDataImpl &Record) { 3650 // Nested name specifiers usually aren't too long. I think that 8 would 3651 // typically accommodate the vast majority. 3652 SmallVector<NestedNameSpecifier *, 8> NestedNames; 3653 3654 // Push each of the NNS's onto a stack for serialization in reverse order. 3655 while (NNS) { 3656 NestedNames.push_back(NNS); 3657 NNS = NNS->getPrefix(); 3658 } 3659 3660 Record.push_back(NestedNames.size()); 3661 while(!NestedNames.empty()) { 3662 NNS = NestedNames.pop_back_val(); 3663 NestedNameSpecifier::SpecifierKind Kind = NNS->getKind(); 3664 Record.push_back(Kind); 3665 switch (Kind) { 3666 case NestedNameSpecifier::Identifier: 3667 AddIdentifierRef(NNS->getAsIdentifier(), Record); 3668 break; 3669 3670 case NestedNameSpecifier::Namespace: 3671 AddDeclRef(NNS->getAsNamespace(), Record); 3672 break; 3673 3674 case NestedNameSpecifier::NamespaceAlias: 3675 AddDeclRef(NNS->getAsNamespaceAlias(), Record); 3676 break; 3677 3678 case NestedNameSpecifier::TypeSpec: 3679 case NestedNameSpecifier::TypeSpecWithTemplate: 3680 AddTypeRef(QualType(NNS->getAsType(), 0), Record); 3681 Record.push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate); 3682 break; 3683 3684 case NestedNameSpecifier::Global: 3685 // Don't need to write an associated value. 3686 break; 3687 } 3688 } 3689} 3690 3691void ASTWriter::AddNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS, 3692 RecordDataImpl &Record) { 3693 // Nested name specifiers usually aren't too long. I think that 8 would 3694 // typically accommodate the vast majority. 3695 SmallVector<NestedNameSpecifierLoc , 8> NestedNames; 3696 3697 // Push each of the nested-name-specifiers's onto a stack for 3698 // serialization in reverse order. 3699 while (NNS) { 3700 NestedNames.push_back(NNS); 3701 NNS = NNS.getPrefix(); 3702 } 3703 3704 Record.push_back(NestedNames.size()); 3705 while(!NestedNames.empty()) { 3706 NNS = NestedNames.pop_back_val(); 3707 NestedNameSpecifier::SpecifierKind Kind 3708 = NNS.getNestedNameSpecifier()->getKind(); 3709 Record.push_back(Kind); 3710 switch (Kind) { 3711 case NestedNameSpecifier::Identifier: 3712 AddIdentifierRef(NNS.getNestedNameSpecifier()->getAsIdentifier(), Record); 3713 AddSourceRange(NNS.getLocalSourceRange(), Record); 3714 break; 3715 3716 case NestedNameSpecifier::Namespace: 3717 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespace(), Record); 3718 AddSourceRange(NNS.getLocalSourceRange(), Record); 3719 break; 3720 3721 case NestedNameSpecifier::NamespaceAlias: 3722 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespaceAlias(), Record); 3723 AddSourceRange(NNS.getLocalSourceRange(), Record); 3724 break; 3725 3726 case NestedNameSpecifier::TypeSpec: 3727 case NestedNameSpecifier::TypeSpecWithTemplate: 3728 Record.push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate); 3729 AddTypeLoc(NNS.getTypeLoc(), Record); 3730 AddSourceLocation(NNS.getLocalSourceRange().getEnd(), Record); 3731 break; 3732 3733 case NestedNameSpecifier::Global: 3734 AddSourceLocation(NNS.getLocalSourceRange().getEnd(), Record); 3735 break; 3736 } 3737 } 3738} 3739 3740void ASTWriter::AddTemplateName(TemplateName Name, RecordDataImpl &Record) { 3741 TemplateName::NameKind Kind = Name.getKind(); 3742 Record.push_back(Kind); 3743 switch (Kind) { 3744 case TemplateName::Template: 3745 AddDeclRef(Name.getAsTemplateDecl(), Record); 3746 break; 3747 3748 case TemplateName::OverloadedTemplate: { 3749 OverloadedTemplateStorage *OvT = Name.getAsOverloadedTemplate(); 3750 Record.push_back(OvT->size()); 3751 for (OverloadedTemplateStorage::iterator I = OvT->begin(), E = OvT->end(); 3752 I != E; ++I) 3753 AddDeclRef(*I, Record); 3754 break; 3755 } 3756 3757 case TemplateName::QualifiedTemplate: { 3758 QualifiedTemplateName *QualT = Name.getAsQualifiedTemplateName(); 3759 AddNestedNameSpecifier(QualT->getQualifier(), Record); 3760 Record.push_back(QualT->hasTemplateKeyword()); 3761 AddDeclRef(QualT->getTemplateDecl(), Record); 3762 break; 3763 } 3764 3765 case TemplateName::DependentTemplate: { 3766 DependentTemplateName *DepT = Name.getAsDependentTemplateName(); 3767 AddNestedNameSpecifier(DepT->getQualifier(), Record); 3768 Record.push_back(DepT->isIdentifier()); 3769 if (DepT->isIdentifier()) 3770 AddIdentifierRef(DepT->getIdentifier(), Record); 3771 else 3772 Record.push_back(DepT->getOperator()); 3773 break; 3774 } 3775 3776 case TemplateName::SubstTemplateTemplateParm: { 3777 SubstTemplateTemplateParmStorage *subst 3778 = Name.getAsSubstTemplateTemplateParm(); 3779 AddDeclRef(subst->getParameter(), Record); 3780 AddTemplateName(subst->getReplacement(), Record); 3781 break; 3782 } 3783 3784 case TemplateName::SubstTemplateTemplateParmPack: { 3785 SubstTemplateTemplateParmPackStorage *SubstPack 3786 = Name.getAsSubstTemplateTemplateParmPack(); 3787 AddDeclRef(SubstPack->getParameterPack(), Record); 3788 AddTemplateArgument(SubstPack->getArgumentPack(), Record); 3789 break; 3790 } 3791 } 3792} 3793 3794void ASTWriter::AddTemplateArgument(const TemplateArgument &Arg, 3795 RecordDataImpl &Record) { 3796 Record.push_back(Arg.getKind()); 3797 switch (Arg.getKind()) { 3798 case TemplateArgument::Null: 3799 break; 3800 case TemplateArgument::Type: 3801 AddTypeRef(Arg.getAsType(), Record); 3802 break; 3803 case TemplateArgument::Declaration: 3804 AddDeclRef(Arg.getAsDecl(), Record); 3805 break; 3806 case TemplateArgument::Integral: 3807 AddAPSInt(*Arg.getAsIntegral(), Record); 3808 AddTypeRef(Arg.getIntegralType(), Record); 3809 break; 3810 case TemplateArgument::Template: 3811 AddTemplateName(Arg.getAsTemplateOrTemplatePattern(), Record); 3812 break; 3813 case TemplateArgument::TemplateExpansion: 3814 AddTemplateName(Arg.getAsTemplateOrTemplatePattern(), Record); 3815 if (llvm::Optional<unsigned> NumExpansions = Arg.getNumTemplateExpansions()) 3816 Record.push_back(*NumExpansions + 1); 3817 else 3818 Record.push_back(0); 3819 break; 3820 case TemplateArgument::Expression: 3821 AddStmt(Arg.getAsExpr()); 3822 break; 3823 case TemplateArgument::Pack: 3824 Record.push_back(Arg.pack_size()); 3825 for (TemplateArgument::pack_iterator I=Arg.pack_begin(), E=Arg.pack_end(); 3826 I != E; ++I) 3827 AddTemplateArgument(*I, Record); 3828 break; 3829 } 3830} 3831 3832void 3833ASTWriter::AddTemplateParameterList(const TemplateParameterList *TemplateParams, 3834 RecordDataImpl &Record) { 3835 assert(TemplateParams && "No TemplateParams!"); 3836 AddSourceLocation(TemplateParams->getTemplateLoc(), Record); 3837 AddSourceLocation(TemplateParams->getLAngleLoc(), Record); 3838 AddSourceLocation(TemplateParams->getRAngleLoc(), Record); 3839 Record.push_back(TemplateParams->size()); 3840 for (TemplateParameterList::const_iterator 3841 P = TemplateParams->begin(), PEnd = TemplateParams->end(); 3842 P != PEnd; ++P) 3843 AddDeclRef(*P, Record); 3844} 3845 3846/// \brief Emit a template argument list. 3847void 3848ASTWriter::AddTemplateArgumentList(const TemplateArgumentList *TemplateArgs, 3849 RecordDataImpl &Record) { 3850 assert(TemplateArgs && "No TemplateArgs!"); 3851 Record.push_back(TemplateArgs->size()); 3852 for (int i=0, e = TemplateArgs->size(); i != e; ++i) 3853 AddTemplateArgument(TemplateArgs->get(i), Record); 3854} 3855 3856 3857void 3858ASTWriter::AddUnresolvedSet(const UnresolvedSetImpl &Set, RecordDataImpl &Record) { 3859 Record.push_back(Set.size()); 3860 for (UnresolvedSetImpl::const_iterator 3861 I = Set.begin(), E = Set.end(); I != E; ++I) { 3862 AddDeclRef(I.getDecl(), Record); 3863 Record.push_back(I.getAccess()); 3864 } 3865} 3866 3867void ASTWriter::AddCXXBaseSpecifier(const CXXBaseSpecifier &Base, 3868 RecordDataImpl &Record) { 3869 Record.push_back(Base.isVirtual()); 3870 Record.push_back(Base.isBaseOfClass()); 3871 Record.push_back(Base.getAccessSpecifierAsWritten()); 3872 Record.push_back(Base.getInheritConstructors()); 3873 AddTypeSourceInfo(Base.getTypeSourceInfo(), Record); 3874 AddSourceRange(Base.getSourceRange(), Record); 3875 AddSourceLocation(Base.isPackExpansion()? Base.getEllipsisLoc() 3876 : SourceLocation(), 3877 Record); 3878} 3879 3880void ASTWriter::FlushCXXBaseSpecifiers() { 3881 RecordData Record; 3882 for (unsigned I = 0, N = CXXBaseSpecifiersToWrite.size(); I != N; ++I) { 3883 Record.clear(); 3884 3885 // Record the offset of this base-specifier set. 3886 unsigned Index = CXXBaseSpecifiersToWrite[I].ID - 1; 3887 if (Index == CXXBaseSpecifiersOffsets.size()) 3888 CXXBaseSpecifiersOffsets.push_back(Stream.GetCurrentBitNo()); 3889 else { 3890 if (Index > CXXBaseSpecifiersOffsets.size()) 3891 CXXBaseSpecifiersOffsets.resize(Index + 1); 3892 CXXBaseSpecifiersOffsets[Index] = Stream.GetCurrentBitNo(); 3893 } 3894 3895 const CXXBaseSpecifier *B = CXXBaseSpecifiersToWrite[I].Bases, 3896 *BEnd = CXXBaseSpecifiersToWrite[I].BasesEnd; 3897 Record.push_back(BEnd - B); 3898 for (; B != BEnd; ++B) 3899 AddCXXBaseSpecifier(*B, Record); 3900 Stream.EmitRecord(serialization::DECL_CXX_BASE_SPECIFIERS, Record); 3901 3902 // Flush any expressions that were written as part of the base specifiers. 3903 FlushStmts(); 3904 } 3905 3906 CXXBaseSpecifiersToWrite.clear(); 3907} 3908 3909void ASTWriter::AddCXXCtorInitializers( 3910 const CXXCtorInitializer * const *CtorInitializers, 3911 unsigned NumCtorInitializers, 3912 RecordDataImpl &Record) { 3913 Record.push_back(NumCtorInitializers); 3914 for (unsigned i=0; i != NumCtorInitializers; ++i) { 3915 const CXXCtorInitializer *Init = CtorInitializers[i]; 3916 3917 if (Init->isBaseInitializer()) { 3918 Record.push_back(CTOR_INITIALIZER_BASE); 3919 AddTypeSourceInfo(Init->getBaseClassInfo(), Record); 3920 Record.push_back(Init->isBaseVirtual()); 3921 } else if (Init->isDelegatingInitializer()) { 3922 Record.push_back(CTOR_INITIALIZER_DELEGATING); 3923 AddDeclRef(Init->getTargetConstructor(), Record); 3924 } else if (Init->isMemberInitializer()){ 3925 Record.push_back(CTOR_INITIALIZER_MEMBER); 3926 AddDeclRef(Init->getMember(), Record); 3927 } else { 3928 Record.push_back(CTOR_INITIALIZER_INDIRECT_MEMBER); 3929 AddDeclRef(Init->getIndirectMember(), Record); 3930 } 3931 3932 AddSourceLocation(Init->getMemberLocation(), Record); 3933 AddStmt(Init->getInit()); 3934 AddSourceLocation(Init->getLParenLoc(), Record); 3935 AddSourceLocation(Init->getRParenLoc(), Record); 3936 Record.push_back(Init->isWritten()); 3937 if (Init->isWritten()) { 3938 Record.push_back(Init->getSourceOrder()); 3939 } else { 3940 Record.push_back(Init->getNumArrayIndices()); 3941 for (unsigned i=0, e=Init->getNumArrayIndices(); i != e; ++i) 3942 AddDeclRef(Init->getArrayIndex(i), Record); 3943 } 3944 } 3945} 3946 3947void ASTWriter::AddCXXDefinitionData(const CXXRecordDecl *D, RecordDataImpl &Record) { 3948 assert(D->DefinitionData); 3949 struct CXXRecordDecl::DefinitionData &Data = *D->DefinitionData; 3950 Record.push_back(Data.UserDeclaredConstructor); 3951 Record.push_back(Data.UserDeclaredCopyConstructor); 3952 Record.push_back(Data.UserDeclaredCopyAssignment); 3953 Record.push_back(Data.UserDeclaredDestructor); 3954 Record.push_back(Data.Aggregate); 3955 Record.push_back(Data.PlainOldData); 3956 Record.push_back(Data.Empty); 3957 Record.push_back(Data.Polymorphic); 3958 Record.push_back(Data.Abstract); 3959 Record.push_back(Data.IsStandardLayout); 3960 Record.push_back(Data.HasNoNonEmptyBases); 3961 Record.push_back(Data.HasPrivateFields); 3962 Record.push_back(Data.HasProtectedFields); 3963 Record.push_back(Data.HasPublicFields); 3964 Record.push_back(Data.HasMutableFields); 3965 Record.push_back(Data.HasTrivialDefaultConstructor); 3966 Record.push_back(Data.HasConstExprNonCopyMoveConstructor); 3967 Record.push_back(Data.HasTrivialCopyConstructor); 3968 Record.push_back(Data.HasTrivialMoveConstructor); 3969 Record.push_back(Data.HasTrivialCopyAssignment); 3970 Record.push_back(Data.HasTrivialMoveAssignment); 3971 Record.push_back(Data.HasTrivialDestructor); 3972 Record.push_back(Data.HasNonLiteralTypeFieldsOrBases); 3973 Record.push_back(Data.ComputedVisibleConversions); 3974 Record.push_back(Data.UserProvidedDefaultConstructor); 3975 Record.push_back(Data.DeclaredDefaultConstructor); 3976 Record.push_back(Data.DeclaredCopyConstructor); 3977 Record.push_back(Data.DeclaredCopyAssignment); 3978 Record.push_back(Data.DeclaredDestructor); 3979 3980 Record.push_back(Data.NumBases); 3981 if (Data.NumBases > 0) 3982 AddCXXBaseSpecifiersRef(Data.getBases(), Data.getBases() + Data.NumBases, 3983 Record); 3984 3985 // FIXME: Make VBases lazily computed when needed to avoid storing them. 3986 Record.push_back(Data.NumVBases); 3987 if (Data.NumVBases > 0) 3988 AddCXXBaseSpecifiersRef(Data.getVBases(), Data.getVBases() + Data.NumVBases, 3989 Record); 3990 3991 AddUnresolvedSet(Data.Conversions, Record); 3992 AddUnresolvedSet(Data.VisibleConversions, Record); 3993 // Data.Definition is the owning decl, no need to write it. 3994 AddDeclRef(Data.FirstFriend, Record); 3995} 3996 3997void ASTWriter::ReaderInitialized(ASTReader *Reader) { 3998 assert(Reader && "Cannot remove chain"); 3999 assert(!Chain && "Cannot replace chain"); 4000 assert(FirstDeclID == NextDeclID && 4001 FirstTypeID == NextTypeID && 4002 FirstIdentID == NextIdentID && 4003 FirstSelectorID == NextSelectorID && 4004 FirstMacroID == NextMacroID && 4005 "Setting chain after writing has started."); 4006 4007 Chain = Reader; 4008 4009 FirstDeclID += Chain->getTotalNumDecls(); 4010 FirstTypeID += Chain->getTotalNumTypes(); 4011 FirstIdentID += Chain->getTotalNumIdentifiers(); 4012 FirstSelectorID += Chain->getTotalNumSelectors(); 4013 FirstMacroID += Chain->getTotalNumMacroDefinitions(); 4014 NextDeclID = FirstDeclID; 4015 NextTypeID = FirstTypeID; 4016 NextIdentID = FirstIdentID; 4017 NextSelectorID = FirstSelectorID; 4018 NextMacroID = FirstMacroID; 4019} 4020 4021void ASTWriter::IdentifierRead(IdentID ID, IdentifierInfo *II) { 4022 IdentifierIDs[II] = ID; 4023 if (II->hasMacroDefinition()) 4024 DeserializedMacroNames.push_back(II); 4025} 4026 4027void ASTWriter::TypeRead(TypeIdx Idx, QualType T) { 4028 // Always take the highest-numbered type index. This copes with an interesting 4029 // case for chained AST writing where we schedule writing the type and then, 4030 // later, deserialize the type from another AST. In this case, we want to 4031 // keep the higher-numbered entry so that we can properly write it out to 4032 // the AST file. 4033 TypeIdx &StoredIdx = TypeIdxs[T]; 4034 if (Idx.getIndex() >= StoredIdx.getIndex()) 4035 StoredIdx = Idx; 4036} 4037 4038void ASTWriter::DeclRead(DeclID ID, const Decl *D) { 4039 DeclIDs[D] = ID; 4040} 4041 4042void ASTWriter::SelectorRead(SelectorID ID, Selector S) { 4043 SelectorIDs[S] = ID; 4044} 4045 4046void ASTWriter::MacroDefinitionRead(serialization::MacroID ID, 4047 MacroDefinition *MD) { 4048 MacroDefinitions[MD] = ID; 4049} 4050 4051void ASTWriter::CompletedTagDefinition(const TagDecl *D) { 4052 assert(D->isDefinition()); 4053 if (const CXXRecordDecl *RD = dyn_cast<CXXRecordDecl>(D)) { 4054 // We are interested when a PCH decl is modified. 4055 if (RD->getPCHLevel() > 0) { 4056 // A forward reference was mutated into a definition. Rewrite it. 4057 // FIXME: This happens during template instantiation, should we 4058 // have created a new definition decl instead ? 4059 RewriteDecl(RD); 4060 } 4061 4062 for (CXXRecordDecl::redecl_iterator 4063 I = RD->redecls_begin(), E = RD->redecls_end(); I != E; ++I) { 4064 CXXRecordDecl *Redecl = cast<CXXRecordDecl>(*I); 4065 if (Redecl == RD) 4066 continue; 4067 4068 // We are interested when a PCH decl is modified. 4069 if (Redecl->getPCHLevel() > 0) { 4070 UpdateRecord &Record = DeclUpdates[Redecl]; 4071 Record.push_back(UPD_CXX_SET_DEFINITIONDATA); 4072 assert(Redecl->DefinitionData); 4073 assert(Redecl->DefinitionData->Definition == D); 4074 AddDeclRef(D, Record); // the DefinitionDecl 4075 } 4076 } 4077 } 4078} 4079void ASTWriter::AddedVisibleDecl(const DeclContext *DC, const Decl *D) { 4080 // TU and namespaces are handled elsewhere. 4081 if (isa<TranslationUnitDecl>(DC) || isa<NamespaceDecl>(DC)) 4082 return; 4083 4084 if (!(D->getPCHLevel() == 0 && cast<Decl>(DC)->getPCHLevel() > 0)) 4085 return; // Not a source decl added to a DeclContext from PCH. 4086 4087 AddUpdatedDeclContext(DC); 4088} 4089 4090void ASTWriter::AddedCXXImplicitMember(const CXXRecordDecl *RD, const Decl *D) { 4091 assert(D->isImplicit()); 4092 if (!(D->getPCHLevel() == 0 && RD->getPCHLevel() > 0)) 4093 return; // Not a source member added to a class from PCH. 4094 if (!isa<CXXMethodDecl>(D)) 4095 return; // We are interested in lazily declared implicit methods. 4096 4097 // A decl coming from PCH was modified. 4098 assert(RD->isDefinition()); 4099 UpdateRecord &Record = DeclUpdates[RD]; 4100 Record.push_back(UPD_CXX_ADDED_IMPLICIT_MEMBER); 4101 AddDeclRef(D, Record); 4102} 4103 4104void ASTWriter::AddedCXXTemplateSpecialization(const ClassTemplateDecl *TD, 4105 const ClassTemplateSpecializationDecl *D) { 4106 // The specializations set is kept in the canonical template. 4107 TD = TD->getCanonicalDecl(); 4108 if (!(D->getPCHLevel() == 0 && TD->getPCHLevel() > 0)) 4109 return; // Not a source specialization added to a template from PCH. 4110 4111 UpdateRecord &Record = DeclUpdates[TD]; 4112 Record.push_back(UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION); 4113 AddDeclRef(D, Record); 4114} 4115 4116void ASTWriter::AddedCXXTemplateSpecialization(const FunctionTemplateDecl *TD, 4117 const FunctionDecl *D) { 4118 // The specializations set is kept in the canonical template. 4119 TD = TD->getCanonicalDecl(); 4120 if (!(D->getPCHLevel() == 0 && TD->getPCHLevel() > 0)) 4121 return; // Not a source specialization added to a template from PCH. 4122 4123 UpdateRecord &Record = DeclUpdates[TD]; 4124 Record.push_back(UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION); 4125 AddDeclRef(D, Record); 4126} 4127 4128void ASTWriter::CompletedImplicitDefinition(const FunctionDecl *D) { 4129 if (D->getPCHLevel() == 0) 4130 return; // Declaration not imported from PCH. 4131 4132 // Implicit decl from a PCH was defined. 4133 // FIXME: Should implicit definition be a separate FunctionDecl? 4134 RewriteDecl(D); 4135} 4136 4137void ASTWriter::StaticDataMemberInstantiated(const VarDecl *D) { 4138 if (D->getPCHLevel() == 0) 4139 return; 4140 4141 // Since the actual instantiation is delayed, this really means that we need 4142 // to update the instantiation location. 4143 UpdateRecord &Record = DeclUpdates[D]; 4144 Record.push_back(UPD_CXX_INSTANTIATED_STATIC_DATA_MEMBER); 4145 AddSourceLocation( 4146 D->getMemberSpecializationInfo()->getPointOfInstantiation(), Record); 4147} 4148 4149ASTSerializationListener::~ASTSerializationListener() { } 4150