1 //===--- ASTWriter.cpp - AST File Writer ------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file defines the ASTWriter class, which writes AST files.
12 //===----------------------------------------------------------------------===//
14 #include "clang/Serialization/ASTWriter.h"
15 #include "ASTCommon.h"
16 #include "ASTReaderInternals.h"
17 #include "MultiOnDiskHashTable.h"
18 #include "clang/AST/ASTContext.h"
19 #include "clang/AST/ASTUnresolvedSet.h"
20 #include "clang/AST/Decl.h"
21 #include "clang/AST/DeclCXX.h"
22 #include "clang/AST/DeclContextInternals.h"
23 #include "clang/AST/DeclFriend.h"
24 #include "clang/AST/DeclTemplate.h"
25 #include "clang/AST/Expr.h"
26 #include "clang/AST/ExprCXX.h"
27 #include "clang/AST/LambdaCapture.h"
28 #include "clang/AST/NestedNameSpecifier.h"
29 #include "clang/AST/RawCommentList.h"
30 #include "clang/AST/TemplateName.h"
31 #include "clang/AST/Type.h"
32 #include "clang/AST/TypeLocVisitor.h"
33 #include "clang/Basic/DiagnosticOptions.h"
34 #include "clang/Basic/FileManager.h"
35 #include "clang/Basic/FileSystemOptions.h"
36 #include "clang/Basic/LLVM.h"
37 #include "clang/Basic/LangOptions.h"
38 #include "clang/Basic/MemoryBufferCache.h"
39 #include "clang/Basic/Module.h"
40 #include "clang/Basic/ObjCRuntime.h"
41 #include "clang/Basic/SourceManager.h"
42 #include "clang/Basic/SourceManagerInternals.h"
43 #include "clang/Basic/TargetInfo.h"
44 #include "clang/Basic/TargetOptions.h"
45 #include "clang/Basic/Version.h"
46 #include "clang/Basic/VersionTuple.h"
47 #include "clang/Lex/HeaderSearch.h"
48 #include "clang/Lex/HeaderSearchOptions.h"
49 #include "clang/Lex/MacroInfo.h"
50 #include "clang/Lex/ModuleMap.h"
51 #include "clang/Lex/PreprocessingRecord.h"
52 #include "clang/Lex/Preprocessor.h"
53 #include "clang/Lex/PreprocessorOptions.h"
54 #include "clang/Lex/Token.h"
55 #include "clang/Sema/IdentifierResolver.h"
56 #include "clang/Sema/ObjCMethodList.h"
57 #include "clang/Sema/Sema.h"
58 #include "clang/Sema/Weak.h"
59 #include "clang/Serialization/ASTReader.h"
60 #include "clang/Serialization/Module.h"
61 #include "clang/Serialization/ModuleFileExtension.h"
62 #include "clang/Serialization/SerializationDiagnostic.h"
63 #include "llvm/ADT/APFloat.h"
64 #include "llvm/ADT/APInt.h"
65 #include "llvm/ADT/Hashing.h"
66 #include "llvm/ADT/IntrusiveRefCntPtr.h"
67 #include "llvm/ADT/Optional.h"
68 #include "llvm/ADT/STLExtras.h"
69 #include "llvm/ADT/SmallSet.h"
70 #include "llvm/ADT/SmallString.h"
71 #include "llvm/ADT/StringExtras.h"
72 #include "llvm/Bitcode/BitCodes.h"
73 #include "llvm/Bitcode/BitstreamWriter.h"
74 #include "llvm/Support/Casting.h"
75 #include "llvm/Support/Compression.h"
76 #include "llvm/Support/EndianStream.h"
77 #include "llvm/Support/Error.h"
78 #include "llvm/Support/ErrorHandling.h"
79 #include "llvm/Support/MemoryBuffer.h"
80 #include "llvm/Support/OnDiskHashTable.h"
81 #include "llvm/Support/Path.h"
82 #include "llvm/Support/Process.h"
83 #include "llvm/Support/SHA1.h"
84 #include "llvm/Support/raw_ostream.h"
96 using namespace clang;
97 using namespace clang::serialization;
99 template <typename T, typename Allocator>
100 static StringRef bytes(const std::vector<T, Allocator> &v) {
101 if (v.empty()) return StringRef();
102 return StringRef(reinterpret_cast<const char*>(&v[0]),
103 sizeof(T) * v.size());
106 template <typename T>
107 static StringRef bytes(const SmallVectorImpl<T> &v) {
108 return StringRef(reinterpret_cast<const char*>(v.data()),
109 sizeof(T) * v.size());
112 //===----------------------------------------------------------------------===//
113 // Type serialization
114 //===----------------------------------------------------------------------===//
118 class ASTTypeWriter {
120 ASTRecordWriter Record;
122 /// \brief Type code that corresponds to the record generated.
124 /// \brief Abbreviation to use for the record, if any.
125 unsigned AbbrevToUse;
128 ASTTypeWriter(ASTWriter &Writer, ASTWriter::RecordDataImpl &Record)
129 : Writer(Writer), Record(Writer, Record), Code((TypeCode)0), AbbrevToUse(0) { }
132 return Record.Emit(Code, AbbrevToUse);
135 void Visit(QualType T) {
136 if (T.hasLocalNonFastQualifiers()) {
137 Qualifiers Qs = T.getLocalQualifiers();
138 Record.AddTypeRef(T.getLocalUnqualifiedType());
139 Record.push_back(Qs.getAsOpaqueValue());
140 Code = TYPE_EXT_QUAL;
141 AbbrevToUse = Writer.TypeExtQualAbbrev;
143 switch (T->getTypeClass()) {
144 // For all of the concrete, non-dependent types, call the
145 // appropriate visitor function.
146 #define TYPE(Class, Base) \
147 case Type::Class: Visit##Class##Type(cast<Class##Type>(T)); break;
148 #define ABSTRACT_TYPE(Class, Base)
149 #include "clang/AST/TypeNodes.def"
154 void VisitArrayType(const ArrayType *T);
155 void VisitFunctionType(const FunctionType *T);
156 void VisitTagType(const TagType *T);
158 #define TYPE(Class, Base) void Visit##Class##Type(const Class##Type *T);
159 #define ABSTRACT_TYPE(Class, Base)
160 #include "clang/AST/TypeNodes.def"
163 } // end namespace clang
165 void ASTTypeWriter::VisitBuiltinType(const BuiltinType *T) {
166 llvm_unreachable("Built-in types are never serialized");
169 void ASTTypeWriter::VisitComplexType(const ComplexType *T) {
170 Record.AddTypeRef(T->getElementType());
174 void ASTTypeWriter::VisitPointerType(const PointerType *T) {
175 Record.AddTypeRef(T->getPointeeType());
179 void ASTTypeWriter::VisitDecayedType(const DecayedType *T) {
180 Record.AddTypeRef(T->getOriginalType());
184 void ASTTypeWriter::VisitAdjustedType(const AdjustedType *T) {
185 Record.AddTypeRef(T->getOriginalType());
186 Record.AddTypeRef(T->getAdjustedType());
187 Code = TYPE_ADJUSTED;
190 void ASTTypeWriter::VisitBlockPointerType(const BlockPointerType *T) {
191 Record.AddTypeRef(T->getPointeeType());
192 Code = TYPE_BLOCK_POINTER;
195 void ASTTypeWriter::VisitLValueReferenceType(const LValueReferenceType *T) {
196 Record.AddTypeRef(T->getPointeeTypeAsWritten());
197 Record.push_back(T->isSpelledAsLValue());
198 Code = TYPE_LVALUE_REFERENCE;
201 void ASTTypeWriter::VisitRValueReferenceType(const RValueReferenceType *T) {
202 Record.AddTypeRef(T->getPointeeTypeAsWritten());
203 Code = TYPE_RVALUE_REFERENCE;
206 void ASTTypeWriter::VisitMemberPointerType(const MemberPointerType *T) {
207 Record.AddTypeRef(T->getPointeeType());
208 Record.AddTypeRef(QualType(T->getClass(), 0));
209 Code = TYPE_MEMBER_POINTER;
212 void ASTTypeWriter::VisitArrayType(const ArrayType *T) {
213 Record.AddTypeRef(T->getElementType());
214 Record.push_back(T->getSizeModifier()); // FIXME: stable values
215 Record.push_back(T->getIndexTypeCVRQualifiers()); // FIXME: stable values
218 void ASTTypeWriter::VisitConstantArrayType(const ConstantArrayType *T) {
220 Record.AddAPInt(T->getSize());
221 Code = TYPE_CONSTANT_ARRAY;
224 void ASTTypeWriter::VisitIncompleteArrayType(const IncompleteArrayType *T) {
226 Code = TYPE_INCOMPLETE_ARRAY;
229 void ASTTypeWriter::VisitVariableArrayType(const VariableArrayType *T) {
231 Record.AddSourceLocation(T->getLBracketLoc());
232 Record.AddSourceLocation(T->getRBracketLoc());
233 Record.AddStmt(T->getSizeExpr());
234 Code = TYPE_VARIABLE_ARRAY;
237 void ASTTypeWriter::VisitVectorType(const VectorType *T) {
238 Record.AddTypeRef(T->getElementType());
239 Record.push_back(T->getNumElements());
240 Record.push_back(T->getVectorKind());
244 void ASTTypeWriter::VisitExtVectorType(const ExtVectorType *T) {
246 Code = TYPE_EXT_VECTOR;
249 void ASTTypeWriter::VisitFunctionType(const FunctionType *T) {
250 Record.AddTypeRef(T->getReturnType());
251 FunctionType::ExtInfo C = T->getExtInfo();
252 Record.push_back(C.getNoReturn());
253 Record.push_back(C.getHasRegParm());
254 Record.push_back(C.getRegParm());
255 // FIXME: need to stabilize encoding of calling convention...
256 Record.push_back(C.getCC());
257 Record.push_back(C.getProducesResult());
258 Record.push_back(C.getNoCallerSavedRegs());
260 if (C.getHasRegParm() || C.getRegParm() || C.getProducesResult())
264 void ASTTypeWriter::VisitFunctionNoProtoType(const FunctionNoProtoType *T) {
265 VisitFunctionType(T);
266 Code = TYPE_FUNCTION_NO_PROTO;
269 static void addExceptionSpec(const FunctionProtoType *T,
270 ASTRecordWriter &Record) {
271 Record.push_back(T->getExceptionSpecType());
272 if (T->getExceptionSpecType() == EST_Dynamic) {
273 Record.push_back(T->getNumExceptions());
274 for (unsigned I = 0, N = T->getNumExceptions(); I != N; ++I)
275 Record.AddTypeRef(T->getExceptionType(I));
276 } else if (T->getExceptionSpecType() == EST_ComputedNoexcept) {
277 Record.AddStmt(T->getNoexceptExpr());
278 } else if (T->getExceptionSpecType() == EST_Uninstantiated) {
279 Record.AddDeclRef(T->getExceptionSpecDecl());
280 Record.AddDeclRef(T->getExceptionSpecTemplate());
281 } else if (T->getExceptionSpecType() == EST_Unevaluated) {
282 Record.AddDeclRef(T->getExceptionSpecDecl());
286 void ASTTypeWriter::VisitFunctionProtoType(const FunctionProtoType *T) {
287 VisitFunctionType(T);
289 Record.push_back(T->isVariadic());
290 Record.push_back(T->hasTrailingReturn());
291 Record.push_back(T->getTypeQuals());
292 Record.push_back(static_cast<unsigned>(T->getRefQualifier()));
293 addExceptionSpec(T, Record);
295 Record.push_back(T->getNumParams());
296 for (unsigned I = 0, N = T->getNumParams(); I != N; ++I)
297 Record.AddTypeRef(T->getParamType(I));
299 if (T->hasExtParameterInfos()) {
300 for (unsigned I = 0, N = T->getNumParams(); I != N; ++I)
301 Record.push_back(T->getExtParameterInfo(I).getOpaqueValue());
304 if (T->isVariadic() || T->hasTrailingReturn() || T->getTypeQuals() ||
305 T->getRefQualifier() || T->getExceptionSpecType() != EST_None ||
306 T->hasExtParameterInfos())
309 Code = TYPE_FUNCTION_PROTO;
312 void ASTTypeWriter::VisitUnresolvedUsingType(const UnresolvedUsingType *T) {
313 Record.AddDeclRef(T->getDecl());
314 Code = TYPE_UNRESOLVED_USING;
317 void ASTTypeWriter::VisitTypedefType(const TypedefType *T) {
318 Record.AddDeclRef(T->getDecl());
319 assert(!T->isCanonicalUnqualified() && "Invalid typedef ?");
320 Record.AddTypeRef(T->getCanonicalTypeInternal());
324 void ASTTypeWriter::VisitTypeOfExprType(const TypeOfExprType *T) {
325 Record.AddStmt(T->getUnderlyingExpr());
326 Code = TYPE_TYPEOF_EXPR;
329 void ASTTypeWriter::VisitTypeOfType(const TypeOfType *T) {
330 Record.AddTypeRef(T->getUnderlyingType());
334 void ASTTypeWriter::VisitDecltypeType(const DecltypeType *T) {
335 Record.AddTypeRef(T->getUnderlyingType());
336 Record.AddStmt(T->getUnderlyingExpr());
337 Code = TYPE_DECLTYPE;
340 void ASTTypeWriter::VisitUnaryTransformType(const UnaryTransformType *T) {
341 Record.AddTypeRef(T->getBaseType());
342 Record.AddTypeRef(T->getUnderlyingType());
343 Record.push_back(T->getUTTKind());
344 Code = TYPE_UNARY_TRANSFORM;
347 void ASTTypeWriter::VisitAutoType(const AutoType *T) {
348 Record.AddTypeRef(T->getDeducedType());
349 Record.push_back((unsigned)T->getKeyword());
350 if (T->getDeducedType().isNull())
351 Record.push_back(T->isDependentType());
355 void ASTTypeWriter::VisitDeducedTemplateSpecializationType(
356 const DeducedTemplateSpecializationType *T) {
357 Record.AddTemplateName(T->getTemplateName());
358 Record.AddTypeRef(T->getDeducedType());
359 if (T->getDeducedType().isNull())
360 Record.push_back(T->isDependentType());
361 Code = TYPE_DEDUCED_TEMPLATE_SPECIALIZATION;
364 void ASTTypeWriter::VisitTagType(const TagType *T) {
365 Record.push_back(T->isDependentType());
366 Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
367 assert(!T->isBeingDefined() &&
368 "Cannot serialize in the middle of a type definition");
371 void ASTTypeWriter::VisitRecordType(const RecordType *T) {
376 void ASTTypeWriter::VisitEnumType(const EnumType *T) {
381 void ASTTypeWriter::VisitAttributedType(const AttributedType *T) {
382 Record.AddTypeRef(T->getModifiedType());
383 Record.AddTypeRef(T->getEquivalentType());
384 Record.push_back(T->getAttrKind());
385 Code = TYPE_ATTRIBUTED;
389 ASTTypeWriter::VisitSubstTemplateTypeParmType(
390 const SubstTemplateTypeParmType *T) {
391 Record.AddTypeRef(QualType(T->getReplacedParameter(), 0));
392 Record.AddTypeRef(T->getReplacementType());
393 Code = TYPE_SUBST_TEMPLATE_TYPE_PARM;
397 ASTTypeWriter::VisitSubstTemplateTypeParmPackType(
398 const SubstTemplateTypeParmPackType *T) {
399 Record.AddTypeRef(QualType(T->getReplacedParameter(), 0));
400 Record.AddTemplateArgument(T->getArgumentPack());
401 Code = TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK;
405 ASTTypeWriter::VisitTemplateSpecializationType(
406 const TemplateSpecializationType *T) {
407 Record.push_back(T->isDependentType());
408 Record.AddTemplateName(T->getTemplateName());
409 Record.push_back(T->getNumArgs());
410 for (const auto &ArgI : *T)
411 Record.AddTemplateArgument(ArgI);
412 Record.AddTypeRef(T->isTypeAlias() ? T->getAliasedType()
413 : T->isCanonicalUnqualified()
415 : T->getCanonicalTypeInternal());
416 Code = TYPE_TEMPLATE_SPECIALIZATION;
420 ASTTypeWriter::VisitDependentSizedArrayType(const DependentSizedArrayType *T) {
422 Record.AddStmt(T->getSizeExpr());
423 Record.AddSourceRange(T->getBracketsRange());
424 Code = TYPE_DEPENDENT_SIZED_ARRAY;
428 ASTTypeWriter::VisitDependentSizedExtVectorType(
429 const DependentSizedExtVectorType *T) {
430 Record.AddTypeRef(T->getElementType());
431 Record.AddStmt(T->getSizeExpr());
432 Record.AddSourceLocation(T->getAttributeLoc());
433 Code = TYPE_DEPENDENT_SIZED_EXT_VECTOR;
437 ASTTypeWriter::VisitTemplateTypeParmType(const TemplateTypeParmType *T) {
438 Record.push_back(T->getDepth());
439 Record.push_back(T->getIndex());
440 Record.push_back(T->isParameterPack());
441 Record.AddDeclRef(T->getDecl());
442 Code = TYPE_TEMPLATE_TYPE_PARM;
446 ASTTypeWriter::VisitDependentNameType(const DependentNameType *T) {
447 Record.push_back(T->getKeyword());
448 Record.AddNestedNameSpecifier(T->getQualifier());
449 Record.AddIdentifierRef(T->getIdentifier());
451 T->isCanonicalUnqualified() ? QualType() : T->getCanonicalTypeInternal());
452 Code = TYPE_DEPENDENT_NAME;
456 ASTTypeWriter::VisitDependentTemplateSpecializationType(
457 const DependentTemplateSpecializationType *T) {
458 Record.push_back(T->getKeyword());
459 Record.AddNestedNameSpecifier(T->getQualifier());
460 Record.AddIdentifierRef(T->getIdentifier());
461 Record.push_back(T->getNumArgs());
462 for (const auto &I : *T)
463 Record.AddTemplateArgument(I);
464 Code = TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION;
467 void ASTTypeWriter::VisitPackExpansionType(const PackExpansionType *T) {
468 Record.AddTypeRef(T->getPattern());
469 if (Optional<unsigned> NumExpansions = T->getNumExpansions())
470 Record.push_back(*NumExpansions + 1);
473 Code = TYPE_PACK_EXPANSION;
476 void ASTTypeWriter::VisitParenType(const ParenType *T) {
477 Record.AddTypeRef(T->getInnerType());
481 void ASTTypeWriter::VisitElaboratedType(const ElaboratedType *T) {
482 Record.push_back(T->getKeyword());
483 Record.AddNestedNameSpecifier(T->getQualifier());
484 Record.AddTypeRef(T->getNamedType());
485 Code = TYPE_ELABORATED;
488 void ASTTypeWriter::VisitInjectedClassNameType(const InjectedClassNameType *T) {
489 Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
490 Record.AddTypeRef(T->getInjectedSpecializationType());
491 Code = TYPE_INJECTED_CLASS_NAME;
494 void ASTTypeWriter::VisitObjCInterfaceType(const ObjCInterfaceType *T) {
495 Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
496 Code = TYPE_OBJC_INTERFACE;
499 void ASTTypeWriter::VisitObjCTypeParamType(const ObjCTypeParamType *T) {
500 Record.AddDeclRef(T->getDecl());
501 Record.push_back(T->getNumProtocols());
502 for (const auto *I : T->quals())
503 Record.AddDeclRef(I);
504 Code = TYPE_OBJC_TYPE_PARAM;
507 void ASTTypeWriter::VisitObjCObjectType(const ObjCObjectType *T) {
508 Record.AddTypeRef(T->getBaseType());
509 Record.push_back(T->getTypeArgsAsWritten().size());
510 for (auto TypeArg : T->getTypeArgsAsWritten())
511 Record.AddTypeRef(TypeArg);
512 Record.push_back(T->getNumProtocols());
513 for (const auto *I : T->quals())
514 Record.AddDeclRef(I);
515 Record.push_back(T->isKindOfTypeAsWritten());
516 Code = TYPE_OBJC_OBJECT;
520 ASTTypeWriter::VisitObjCObjectPointerType(const ObjCObjectPointerType *T) {
521 Record.AddTypeRef(T->getPointeeType());
522 Code = TYPE_OBJC_OBJECT_POINTER;
526 ASTTypeWriter::VisitAtomicType(const AtomicType *T) {
527 Record.AddTypeRef(T->getValueType());
532 ASTTypeWriter::VisitPipeType(const PipeType *T) {
533 Record.AddTypeRef(T->getElementType());
534 Record.push_back(T->isReadOnly());
540 class TypeLocWriter : public TypeLocVisitor<TypeLocWriter> {
541 ASTRecordWriter &Record;
544 TypeLocWriter(ASTRecordWriter &Record)
547 #define ABSTRACT_TYPELOC(CLASS, PARENT)
548 #define TYPELOC(CLASS, PARENT) \
549 void Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc);
550 #include "clang/AST/TypeLocNodes.def"
552 void VisitArrayTypeLoc(ArrayTypeLoc TyLoc);
553 void VisitFunctionTypeLoc(FunctionTypeLoc TyLoc);
556 } // end anonymous namespace
558 void TypeLocWriter::VisitQualifiedTypeLoc(QualifiedTypeLoc TL) {
562 void TypeLocWriter::VisitBuiltinTypeLoc(BuiltinTypeLoc TL) {
563 Record.AddSourceLocation(TL.getBuiltinLoc());
564 if (TL.needsExtraLocalData()) {
565 Record.push_back(TL.getWrittenTypeSpec());
566 Record.push_back(TL.getWrittenSignSpec());
567 Record.push_back(TL.getWrittenWidthSpec());
568 Record.push_back(TL.hasModeAttr());
572 void TypeLocWriter::VisitComplexTypeLoc(ComplexTypeLoc TL) {
573 Record.AddSourceLocation(TL.getNameLoc());
576 void TypeLocWriter::VisitPointerTypeLoc(PointerTypeLoc TL) {
577 Record.AddSourceLocation(TL.getStarLoc());
580 void TypeLocWriter::VisitDecayedTypeLoc(DecayedTypeLoc TL) {
584 void TypeLocWriter::VisitAdjustedTypeLoc(AdjustedTypeLoc TL) {
588 void TypeLocWriter::VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL) {
589 Record.AddSourceLocation(TL.getCaretLoc());
592 void TypeLocWriter::VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL) {
593 Record.AddSourceLocation(TL.getAmpLoc());
596 void TypeLocWriter::VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL) {
597 Record.AddSourceLocation(TL.getAmpAmpLoc());
600 void TypeLocWriter::VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL) {
601 Record.AddSourceLocation(TL.getStarLoc());
602 Record.AddTypeSourceInfo(TL.getClassTInfo());
605 void TypeLocWriter::VisitArrayTypeLoc(ArrayTypeLoc TL) {
606 Record.AddSourceLocation(TL.getLBracketLoc());
607 Record.AddSourceLocation(TL.getRBracketLoc());
608 Record.push_back(TL.getSizeExpr() ? 1 : 0);
609 if (TL.getSizeExpr())
610 Record.AddStmt(TL.getSizeExpr());
613 void TypeLocWriter::VisitConstantArrayTypeLoc(ConstantArrayTypeLoc TL) {
614 VisitArrayTypeLoc(TL);
617 void TypeLocWriter::VisitIncompleteArrayTypeLoc(IncompleteArrayTypeLoc TL) {
618 VisitArrayTypeLoc(TL);
621 void TypeLocWriter::VisitVariableArrayTypeLoc(VariableArrayTypeLoc TL) {
622 VisitArrayTypeLoc(TL);
625 void TypeLocWriter::VisitDependentSizedArrayTypeLoc(
626 DependentSizedArrayTypeLoc TL) {
627 VisitArrayTypeLoc(TL);
630 void TypeLocWriter::VisitDependentSizedExtVectorTypeLoc(
631 DependentSizedExtVectorTypeLoc TL) {
632 Record.AddSourceLocation(TL.getNameLoc());
635 void TypeLocWriter::VisitVectorTypeLoc(VectorTypeLoc TL) {
636 Record.AddSourceLocation(TL.getNameLoc());
639 void TypeLocWriter::VisitExtVectorTypeLoc(ExtVectorTypeLoc TL) {
640 Record.AddSourceLocation(TL.getNameLoc());
643 void TypeLocWriter::VisitFunctionTypeLoc(FunctionTypeLoc TL) {
644 Record.AddSourceLocation(TL.getLocalRangeBegin());
645 Record.AddSourceLocation(TL.getLParenLoc());
646 Record.AddSourceLocation(TL.getRParenLoc());
647 Record.AddSourceRange(TL.getExceptionSpecRange());
648 Record.AddSourceLocation(TL.getLocalRangeEnd());
649 for (unsigned i = 0, e = TL.getNumParams(); i != e; ++i)
650 Record.AddDeclRef(TL.getParam(i));
652 void TypeLocWriter::VisitFunctionProtoTypeLoc(FunctionProtoTypeLoc TL) {
653 VisitFunctionTypeLoc(TL);
655 void TypeLocWriter::VisitFunctionNoProtoTypeLoc(FunctionNoProtoTypeLoc TL) {
656 VisitFunctionTypeLoc(TL);
658 void TypeLocWriter::VisitUnresolvedUsingTypeLoc(UnresolvedUsingTypeLoc TL) {
659 Record.AddSourceLocation(TL.getNameLoc());
661 void TypeLocWriter::VisitTypedefTypeLoc(TypedefTypeLoc TL) {
662 Record.AddSourceLocation(TL.getNameLoc());
664 void TypeLocWriter::VisitObjCTypeParamTypeLoc(ObjCTypeParamTypeLoc TL) {
665 if (TL.getNumProtocols()) {
666 Record.AddSourceLocation(TL.getProtocolLAngleLoc());
667 Record.AddSourceLocation(TL.getProtocolRAngleLoc());
669 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
670 Record.AddSourceLocation(TL.getProtocolLoc(i));
672 void TypeLocWriter::VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL) {
673 Record.AddSourceLocation(TL.getTypeofLoc());
674 Record.AddSourceLocation(TL.getLParenLoc());
675 Record.AddSourceLocation(TL.getRParenLoc());
678 void TypeLocWriter::VisitTypeOfTypeLoc(TypeOfTypeLoc TL) {
679 Record.AddSourceLocation(TL.getTypeofLoc());
680 Record.AddSourceLocation(TL.getLParenLoc());
681 Record.AddSourceLocation(TL.getRParenLoc());
682 Record.AddTypeSourceInfo(TL.getUnderlyingTInfo());
685 void TypeLocWriter::VisitDecltypeTypeLoc(DecltypeTypeLoc TL) {
686 Record.AddSourceLocation(TL.getNameLoc());
689 void TypeLocWriter::VisitUnaryTransformTypeLoc(UnaryTransformTypeLoc TL) {
690 Record.AddSourceLocation(TL.getKWLoc());
691 Record.AddSourceLocation(TL.getLParenLoc());
692 Record.AddSourceLocation(TL.getRParenLoc());
693 Record.AddTypeSourceInfo(TL.getUnderlyingTInfo());
696 void TypeLocWriter::VisitAutoTypeLoc(AutoTypeLoc TL) {
697 Record.AddSourceLocation(TL.getNameLoc());
700 void TypeLocWriter::VisitDeducedTemplateSpecializationTypeLoc(
701 DeducedTemplateSpecializationTypeLoc TL) {
702 Record.AddSourceLocation(TL.getTemplateNameLoc());
705 void TypeLocWriter::VisitRecordTypeLoc(RecordTypeLoc TL) {
706 Record.AddSourceLocation(TL.getNameLoc());
709 void TypeLocWriter::VisitEnumTypeLoc(EnumTypeLoc TL) {
710 Record.AddSourceLocation(TL.getNameLoc());
713 void TypeLocWriter::VisitAttributedTypeLoc(AttributedTypeLoc TL) {
714 Record.AddSourceLocation(TL.getAttrNameLoc());
715 if (TL.hasAttrOperand()) {
716 SourceRange range = TL.getAttrOperandParensRange();
717 Record.AddSourceLocation(range.getBegin());
718 Record.AddSourceLocation(range.getEnd());
720 if (TL.hasAttrExprOperand()) {
721 Expr *operand = TL.getAttrExprOperand();
722 Record.push_back(operand ? 1 : 0);
723 if (operand) Record.AddStmt(operand);
724 } else if (TL.hasAttrEnumOperand()) {
725 Record.AddSourceLocation(TL.getAttrEnumOperandLoc());
729 void TypeLocWriter::VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL) {
730 Record.AddSourceLocation(TL.getNameLoc());
733 void TypeLocWriter::VisitSubstTemplateTypeParmTypeLoc(
734 SubstTemplateTypeParmTypeLoc TL) {
735 Record.AddSourceLocation(TL.getNameLoc());
738 void TypeLocWriter::VisitSubstTemplateTypeParmPackTypeLoc(
739 SubstTemplateTypeParmPackTypeLoc TL) {
740 Record.AddSourceLocation(TL.getNameLoc());
743 void TypeLocWriter::VisitTemplateSpecializationTypeLoc(
744 TemplateSpecializationTypeLoc TL) {
745 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
746 Record.AddSourceLocation(TL.getTemplateNameLoc());
747 Record.AddSourceLocation(TL.getLAngleLoc());
748 Record.AddSourceLocation(TL.getRAngleLoc());
749 for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i)
750 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(i).getArgument().getKind(),
751 TL.getArgLoc(i).getLocInfo());
754 void TypeLocWriter::VisitParenTypeLoc(ParenTypeLoc TL) {
755 Record.AddSourceLocation(TL.getLParenLoc());
756 Record.AddSourceLocation(TL.getRParenLoc());
759 void TypeLocWriter::VisitElaboratedTypeLoc(ElaboratedTypeLoc TL) {
760 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
761 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
764 void TypeLocWriter::VisitInjectedClassNameTypeLoc(InjectedClassNameTypeLoc TL) {
765 Record.AddSourceLocation(TL.getNameLoc());
768 void TypeLocWriter::VisitDependentNameTypeLoc(DependentNameTypeLoc TL) {
769 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
770 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
771 Record.AddSourceLocation(TL.getNameLoc());
774 void TypeLocWriter::VisitDependentTemplateSpecializationTypeLoc(
775 DependentTemplateSpecializationTypeLoc TL) {
776 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
777 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
778 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
779 Record.AddSourceLocation(TL.getTemplateNameLoc());
780 Record.AddSourceLocation(TL.getLAngleLoc());
781 Record.AddSourceLocation(TL.getRAngleLoc());
782 for (unsigned I = 0, E = TL.getNumArgs(); I != E; ++I)
783 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(I).getArgument().getKind(),
784 TL.getArgLoc(I).getLocInfo());
787 void TypeLocWriter::VisitPackExpansionTypeLoc(PackExpansionTypeLoc TL) {
788 Record.AddSourceLocation(TL.getEllipsisLoc());
791 void TypeLocWriter::VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) {
792 Record.AddSourceLocation(TL.getNameLoc());
795 void TypeLocWriter::VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) {
796 Record.push_back(TL.hasBaseTypeAsWritten());
797 Record.AddSourceLocation(TL.getTypeArgsLAngleLoc());
798 Record.AddSourceLocation(TL.getTypeArgsRAngleLoc());
799 for (unsigned i = 0, e = TL.getNumTypeArgs(); i != e; ++i)
800 Record.AddTypeSourceInfo(TL.getTypeArgTInfo(i));
801 Record.AddSourceLocation(TL.getProtocolLAngleLoc());
802 Record.AddSourceLocation(TL.getProtocolRAngleLoc());
803 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
804 Record.AddSourceLocation(TL.getProtocolLoc(i));
807 void TypeLocWriter::VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) {
808 Record.AddSourceLocation(TL.getStarLoc());
811 void TypeLocWriter::VisitAtomicTypeLoc(AtomicTypeLoc TL) {
812 Record.AddSourceLocation(TL.getKWLoc());
813 Record.AddSourceLocation(TL.getLParenLoc());
814 Record.AddSourceLocation(TL.getRParenLoc());
817 void TypeLocWriter::VisitPipeTypeLoc(PipeTypeLoc TL) {
818 Record.AddSourceLocation(TL.getKWLoc());
821 void ASTWriter::WriteTypeAbbrevs() {
822 using namespace llvm;
824 std::shared_ptr<BitCodeAbbrev> Abv;
826 // Abbreviation for TYPE_EXT_QUAL
827 Abv = std::make_shared<BitCodeAbbrev>();
828 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_EXT_QUAL));
829 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
830 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 3)); // Quals
831 TypeExtQualAbbrev = Stream.EmitAbbrev(std::move(Abv));
833 // Abbreviation for TYPE_FUNCTION_PROTO
834 Abv = std::make_shared<BitCodeAbbrev>();
835 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_FUNCTION_PROTO));
837 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ReturnType
838 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // NoReturn
839 Abv->Add(BitCodeAbbrevOp(0)); // HasRegParm
840 Abv->Add(BitCodeAbbrevOp(0)); // RegParm
841 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 4)); // CC
842 Abv->Add(BitCodeAbbrevOp(0)); // ProducesResult
843 Abv->Add(BitCodeAbbrevOp(0)); // NoCallerSavedRegs
845 Abv->Add(BitCodeAbbrevOp(0)); // IsVariadic
846 Abv->Add(BitCodeAbbrevOp(0)); // HasTrailingReturn
847 Abv->Add(BitCodeAbbrevOp(0)); // TypeQuals
848 Abv->Add(BitCodeAbbrevOp(0)); // RefQualifier
849 Abv->Add(BitCodeAbbrevOp(EST_None)); // ExceptionSpec
850 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // NumParams
851 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
852 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Params
853 TypeFunctionProtoAbbrev = Stream.EmitAbbrev(std::move(Abv));
856 //===----------------------------------------------------------------------===//
857 // ASTWriter Implementation
858 //===----------------------------------------------------------------------===//
860 static void EmitBlockID(unsigned ID, const char *Name,
861 llvm::BitstreamWriter &Stream,
862 ASTWriter::RecordDataImpl &Record) {
864 Record.push_back(ID);
865 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETBID, Record);
867 // Emit the block name if present.
868 if (!Name || Name[0] == 0)
872 Record.push_back(*Name++);
873 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_BLOCKNAME, Record);
876 static void EmitRecordID(unsigned ID, const char *Name,
877 llvm::BitstreamWriter &Stream,
878 ASTWriter::RecordDataImpl &Record) {
880 Record.push_back(ID);
882 Record.push_back(*Name++);
883 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETRECORDNAME, Record);
886 static void AddStmtsExprs(llvm::BitstreamWriter &Stream,
887 ASTWriter::RecordDataImpl &Record) {
888 #define RECORD(X) EmitRecordID(X, #X, Stream, Record)
890 RECORD(STMT_NULL_PTR);
891 RECORD(STMT_REF_PTR);
893 RECORD(STMT_COMPOUND);
895 RECORD(STMT_DEFAULT);
897 RECORD(STMT_ATTRIBUTED);
904 RECORD(STMT_INDIRECT_GOTO);
905 RECORD(STMT_CONTINUE);
911 RECORD(EXPR_PREDEFINED);
912 RECORD(EXPR_DECL_REF);
913 RECORD(EXPR_INTEGER_LITERAL);
914 RECORD(EXPR_FLOATING_LITERAL);
915 RECORD(EXPR_IMAGINARY_LITERAL);
916 RECORD(EXPR_STRING_LITERAL);
917 RECORD(EXPR_CHARACTER_LITERAL);
919 RECORD(EXPR_PAREN_LIST);
920 RECORD(EXPR_UNARY_OPERATOR);
921 RECORD(EXPR_SIZEOF_ALIGN_OF);
922 RECORD(EXPR_ARRAY_SUBSCRIPT);
925 RECORD(EXPR_BINARY_OPERATOR);
926 RECORD(EXPR_COMPOUND_ASSIGN_OPERATOR);
927 RECORD(EXPR_CONDITIONAL_OPERATOR);
928 RECORD(EXPR_IMPLICIT_CAST);
929 RECORD(EXPR_CSTYLE_CAST);
930 RECORD(EXPR_COMPOUND_LITERAL);
931 RECORD(EXPR_EXT_VECTOR_ELEMENT);
932 RECORD(EXPR_INIT_LIST);
933 RECORD(EXPR_DESIGNATED_INIT);
934 RECORD(EXPR_DESIGNATED_INIT_UPDATE);
935 RECORD(EXPR_IMPLICIT_VALUE_INIT);
936 RECORD(EXPR_NO_INIT);
938 RECORD(EXPR_ADDR_LABEL);
941 RECORD(EXPR_GNU_NULL);
942 RECORD(EXPR_SHUFFLE_VECTOR);
944 RECORD(EXPR_GENERIC_SELECTION);
945 RECORD(EXPR_OBJC_STRING_LITERAL);
946 RECORD(EXPR_OBJC_BOXED_EXPRESSION);
947 RECORD(EXPR_OBJC_ARRAY_LITERAL);
948 RECORD(EXPR_OBJC_DICTIONARY_LITERAL);
949 RECORD(EXPR_OBJC_ENCODE);
950 RECORD(EXPR_OBJC_SELECTOR_EXPR);
951 RECORD(EXPR_OBJC_PROTOCOL_EXPR);
952 RECORD(EXPR_OBJC_IVAR_REF_EXPR);
953 RECORD(EXPR_OBJC_PROPERTY_REF_EXPR);
954 RECORD(EXPR_OBJC_KVC_REF_EXPR);
955 RECORD(EXPR_OBJC_MESSAGE_EXPR);
956 RECORD(STMT_OBJC_FOR_COLLECTION);
957 RECORD(STMT_OBJC_CATCH);
958 RECORD(STMT_OBJC_FINALLY);
959 RECORD(STMT_OBJC_AT_TRY);
960 RECORD(STMT_OBJC_AT_SYNCHRONIZED);
961 RECORD(STMT_OBJC_AT_THROW);
962 RECORD(EXPR_OBJC_BOOL_LITERAL);
963 RECORD(STMT_CXX_CATCH);
964 RECORD(STMT_CXX_TRY);
965 RECORD(STMT_CXX_FOR_RANGE);
966 RECORD(EXPR_CXX_OPERATOR_CALL);
967 RECORD(EXPR_CXX_MEMBER_CALL);
968 RECORD(EXPR_CXX_CONSTRUCT);
969 RECORD(EXPR_CXX_TEMPORARY_OBJECT);
970 RECORD(EXPR_CXX_STATIC_CAST);
971 RECORD(EXPR_CXX_DYNAMIC_CAST);
972 RECORD(EXPR_CXX_REINTERPRET_CAST);
973 RECORD(EXPR_CXX_CONST_CAST);
974 RECORD(EXPR_CXX_FUNCTIONAL_CAST);
975 RECORD(EXPR_USER_DEFINED_LITERAL);
976 RECORD(EXPR_CXX_STD_INITIALIZER_LIST);
977 RECORD(EXPR_CXX_BOOL_LITERAL);
978 RECORD(EXPR_CXX_NULL_PTR_LITERAL);
979 RECORD(EXPR_CXX_TYPEID_EXPR);
980 RECORD(EXPR_CXX_TYPEID_TYPE);
981 RECORD(EXPR_CXX_THIS);
982 RECORD(EXPR_CXX_THROW);
983 RECORD(EXPR_CXX_DEFAULT_ARG);
984 RECORD(EXPR_CXX_DEFAULT_INIT);
985 RECORD(EXPR_CXX_BIND_TEMPORARY);
986 RECORD(EXPR_CXX_SCALAR_VALUE_INIT);
987 RECORD(EXPR_CXX_NEW);
988 RECORD(EXPR_CXX_DELETE);
989 RECORD(EXPR_CXX_PSEUDO_DESTRUCTOR);
990 RECORD(EXPR_EXPR_WITH_CLEANUPS);
991 RECORD(EXPR_CXX_DEPENDENT_SCOPE_MEMBER);
992 RECORD(EXPR_CXX_DEPENDENT_SCOPE_DECL_REF);
993 RECORD(EXPR_CXX_UNRESOLVED_CONSTRUCT);
994 RECORD(EXPR_CXX_UNRESOLVED_MEMBER);
995 RECORD(EXPR_CXX_UNRESOLVED_LOOKUP);
996 RECORD(EXPR_CXX_EXPRESSION_TRAIT);
997 RECORD(EXPR_CXX_NOEXCEPT);
998 RECORD(EXPR_OPAQUE_VALUE);
999 RECORD(EXPR_BINARY_CONDITIONAL_OPERATOR);
1000 RECORD(EXPR_TYPE_TRAIT);
1001 RECORD(EXPR_ARRAY_TYPE_TRAIT);
1002 RECORD(EXPR_PACK_EXPANSION);
1003 RECORD(EXPR_SIZEOF_PACK);
1004 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM);
1005 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK);
1006 RECORD(EXPR_FUNCTION_PARM_PACK);
1007 RECORD(EXPR_MATERIALIZE_TEMPORARY);
1008 RECORD(EXPR_CUDA_KERNEL_CALL);
1009 RECORD(EXPR_CXX_UUIDOF_EXPR);
1010 RECORD(EXPR_CXX_UUIDOF_TYPE);
1011 RECORD(EXPR_LAMBDA);
1015 void ASTWriter::WriteBlockInfoBlock() {
1017 Stream.EnterBlockInfoBlock();
1019 #define BLOCK(X) EmitBlockID(X ## _ID, #X, Stream, Record)
1020 #define RECORD(X) EmitRecordID(X, #X, Stream, Record)
1023 BLOCK(CONTROL_BLOCK);
1025 RECORD(MODULE_NAME);
1026 RECORD(MODULE_DIRECTORY);
1027 RECORD(MODULE_MAP_FILE);
1029 RECORD(ORIGINAL_FILE);
1030 RECORD(ORIGINAL_PCH_DIR);
1031 RECORD(ORIGINAL_FILE_ID);
1032 RECORD(INPUT_FILE_OFFSETS);
1034 BLOCK(OPTIONS_BLOCK);
1035 RECORD(LANGUAGE_OPTIONS);
1036 RECORD(TARGET_OPTIONS);
1037 RECORD(FILE_SYSTEM_OPTIONS);
1038 RECORD(HEADER_SEARCH_OPTIONS);
1039 RECORD(PREPROCESSOR_OPTIONS);
1041 BLOCK(INPUT_FILES_BLOCK);
1044 // AST Top-Level Block.
1046 RECORD(TYPE_OFFSET);
1047 RECORD(DECL_OFFSET);
1048 RECORD(IDENTIFIER_OFFSET);
1049 RECORD(IDENTIFIER_TABLE);
1050 RECORD(EAGERLY_DESERIALIZED_DECLS);
1051 RECORD(MODULAR_CODEGEN_DECLS);
1052 RECORD(SPECIAL_TYPES);
1054 RECORD(TENTATIVE_DEFINITIONS);
1055 RECORD(SELECTOR_OFFSETS);
1056 RECORD(METHOD_POOL);
1057 RECORD(PP_COUNTER_VALUE);
1058 RECORD(SOURCE_LOCATION_OFFSETS);
1059 RECORD(SOURCE_LOCATION_PRELOADS);
1060 RECORD(EXT_VECTOR_DECLS);
1061 RECORD(UNUSED_FILESCOPED_DECLS);
1062 RECORD(PPD_ENTITIES_OFFSETS);
1063 RECORD(VTABLE_USES);
1064 RECORD(REFERENCED_SELECTOR_POOL);
1065 RECORD(TU_UPDATE_LEXICAL);
1066 RECORD(SEMA_DECL_REFS);
1067 RECORD(WEAK_UNDECLARED_IDENTIFIERS);
1068 RECORD(PENDING_IMPLICIT_INSTANTIATIONS);
1069 RECORD(UPDATE_VISIBLE);
1070 RECORD(DECL_UPDATE_OFFSETS);
1071 RECORD(DECL_UPDATES);
1072 RECORD(CUDA_SPECIAL_DECL_REFS);
1073 RECORD(HEADER_SEARCH_TABLE);
1074 RECORD(FP_PRAGMA_OPTIONS);
1075 RECORD(OPENCL_EXTENSIONS);
1076 RECORD(OPENCL_EXTENSION_TYPES);
1077 RECORD(OPENCL_EXTENSION_DECLS);
1078 RECORD(DELEGATING_CTORS);
1079 RECORD(KNOWN_NAMESPACES);
1080 RECORD(MODULE_OFFSET_MAP);
1081 RECORD(SOURCE_MANAGER_LINE_TABLE);
1082 RECORD(OBJC_CATEGORIES_MAP);
1083 RECORD(FILE_SORTED_DECLS);
1084 RECORD(IMPORTED_MODULES);
1085 RECORD(OBJC_CATEGORIES);
1086 RECORD(MACRO_OFFSET);
1087 RECORD(INTERESTING_IDENTIFIERS);
1088 RECORD(UNDEFINED_BUT_USED);
1089 RECORD(LATE_PARSED_TEMPLATE);
1090 RECORD(OPTIMIZE_PRAGMA_OPTIONS);
1091 RECORD(MSSTRUCT_PRAGMA_OPTIONS);
1092 RECORD(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS);
1093 RECORD(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES);
1094 RECORD(DELETE_EXPRS_TO_ANALYZE);
1095 RECORD(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH);
1097 // SourceManager Block.
1098 BLOCK(SOURCE_MANAGER_BLOCK);
1099 RECORD(SM_SLOC_FILE_ENTRY);
1100 RECORD(SM_SLOC_BUFFER_ENTRY);
1101 RECORD(SM_SLOC_BUFFER_BLOB);
1102 RECORD(SM_SLOC_BUFFER_BLOB_COMPRESSED);
1103 RECORD(SM_SLOC_EXPANSION_ENTRY);
1105 // Preprocessor Block.
1106 BLOCK(PREPROCESSOR_BLOCK);
1107 RECORD(PP_MACRO_DIRECTIVE_HISTORY);
1108 RECORD(PP_MACRO_FUNCTION_LIKE);
1109 RECORD(PP_MACRO_OBJECT_LIKE);
1110 RECORD(PP_MODULE_MACRO);
1114 BLOCK(SUBMODULE_BLOCK);
1115 RECORD(SUBMODULE_METADATA);
1116 RECORD(SUBMODULE_DEFINITION);
1117 RECORD(SUBMODULE_UMBRELLA_HEADER);
1118 RECORD(SUBMODULE_HEADER);
1119 RECORD(SUBMODULE_TOPHEADER);
1120 RECORD(SUBMODULE_UMBRELLA_DIR);
1121 RECORD(SUBMODULE_IMPORTS);
1122 RECORD(SUBMODULE_EXPORTS);
1123 RECORD(SUBMODULE_REQUIRES);
1124 RECORD(SUBMODULE_EXCLUDED_HEADER);
1125 RECORD(SUBMODULE_LINK_LIBRARY);
1126 RECORD(SUBMODULE_CONFIG_MACRO);
1127 RECORD(SUBMODULE_CONFLICT);
1128 RECORD(SUBMODULE_PRIVATE_HEADER);
1129 RECORD(SUBMODULE_TEXTUAL_HEADER);
1130 RECORD(SUBMODULE_PRIVATE_TEXTUAL_HEADER);
1131 RECORD(SUBMODULE_INITIALIZERS);
1134 BLOCK(COMMENTS_BLOCK);
1135 RECORD(COMMENTS_RAW_COMMENT);
1137 // Decls and Types block.
1138 BLOCK(DECLTYPES_BLOCK);
1139 RECORD(TYPE_EXT_QUAL);
1140 RECORD(TYPE_COMPLEX);
1141 RECORD(TYPE_POINTER);
1142 RECORD(TYPE_BLOCK_POINTER);
1143 RECORD(TYPE_LVALUE_REFERENCE);
1144 RECORD(TYPE_RVALUE_REFERENCE);
1145 RECORD(TYPE_MEMBER_POINTER);
1146 RECORD(TYPE_CONSTANT_ARRAY);
1147 RECORD(TYPE_INCOMPLETE_ARRAY);
1148 RECORD(TYPE_VARIABLE_ARRAY);
1149 RECORD(TYPE_VECTOR);
1150 RECORD(TYPE_EXT_VECTOR);
1151 RECORD(TYPE_FUNCTION_NO_PROTO);
1152 RECORD(TYPE_FUNCTION_PROTO);
1153 RECORD(TYPE_TYPEDEF);
1154 RECORD(TYPE_TYPEOF_EXPR);
1155 RECORD(TYPE_TYPEOF);
1156 RECORD(TYPE_RECORD);
1158 RECORD(TYPE_OBJC_INTERFACE);
1159 RECORD(TYPE_OBJC_OBJECT_POINTER);
1160 RECORD(TYPE_DECLTYPE);
1161 RECORD(TYPE_ELABORATED);
1162 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM);
1163 RECORD(TYPE_UNRESOLVED_USING);
1164 RECORD(TYPE_INJECTED_CLASS_NAME);
1165 RECORD(TYPE_OBJC_OBJECT);
1166 RECORD(TYPE_TEMPLATE_TYPE_PARM);
1167 RECORD(TYPE_TEMPLATE_SPECIALIZATION);
1168 RECORD(TYPE_DEPENDENT_NAME);
1169 RECORD(TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION);
1170 RECORD(TYPE_DEPENDENT_SIZED_ARRAY);
1172 RECORD(TYPE_PACK_EXPANSION);
1173 RECORD(TYPE_ATTRIBUTED);
1174 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK);
1176 RECORD(TYPE_UNARY_TRANSFORM);
1177 RECORD(TYPE_ATOMIC);
1178 RECORD(TYPE_DECAYED);
1179 RECORD(TYPE_ADJUSTED);
1180 RECORD(TYPE_OBJC_TYPE_PARAM);
1181 RECORD(LOCAL_REDECLARATIONS);
1182 RECORD(DECL_TYPEDEF);
1183 RECORD(DECL_TYPEALIAS);
1185 RECORD(DECL_RECORD);
1186 RECORD(DECL_ENUM_CONSTANT);
1187 RECORD(DECL_FUNCTION);
1188 RECORD(DECL_OBJC_METHOD);
1189 RECORD(DECL_OBJC_INTERFACE);
1190 RECORD(DECL_OBJC_PROTOCOL);
1191 RECORD(DECL_OBJC_IVAR);
1192 RECORD(DECL_OBJC_AT_DEFS_FIELD);
1193 RECORD(DECL_OBJC_CATEGORY);
1194 RECORD(DECL_OBJC_CATEGORY_IMPL);
1195 RECORD(DECL_OBJC_IMPLEMENTATION);
1196 RECORD(DECL_OBJC_COMPATIBLE_ALIAS);
1197 RECORD(DECL_OBJC_PROPERTY);
1198 RECORD(DECL_OBJC_PROPERTY_IMPL);
1200 RECORD(DECL_MS_PROPERTY);
1202 RECORD(DECL_IMPLICIT_PARAM);
1203 RECORD(DECL_PARM_VAR);
1204 RECORD(DECL_FILE_SCOPE_ASM);
1206 RECORD(DECL_CONTEXT_LEXICAL);
1207 RECORD(DECL_CONTEXT_VISIBLE);
1208 RECORD(DECL_NAMESPACE);
1209 RECORD(DECL_NAMESPACE_ALIAS);
1211 RECORD(DECL_USING_SHADOW);
1212 RECORD(DECL_USING_DIRECTIVE);
1213 RECORD(DECL_UNRESOLVED_USING_VALUE);
1214 RECORD(DECL_UNRESOLVED_USING_TYPENAME);
1215 RECORD(DECL_LINKAGE_SPEC);
1216 RECORD(DECL_CXX_RECORD);
1217 RECORD(DECL_CXX_METHOD);
1218 RECORD(DECL_CXX_CONSTRUCTOR);
1219 RECORD(DECL_CXX_INHERITED_CONSTRUCTOR);
1220 RECORD(DECL_CXX_DESTRUCTOR);
1221 RECORD(DECL_CXX_CONVERSION);
1222 RECORD(DECL_ACCESS_SPEC);
1223 RECORD(DECL_FRIEND);
1224 RECORD(DECL_FRIEND_TEMPLATE);
1225 RECORD(DECL_CLASS_TEMPLATE);
1226 RECORD(DECL_CLASS_TEMPLATE_SPECIALIZATION);
1227 RECORD(DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION);
1228 RECORD(DECL_VAR_TEMPLATE);
1229 RECORD(DECL_VAR_TEMPLATE_SPECIALIZATION);
1230 RECORD(DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION);
1231 RECORD(DECL_FUNCTION_TEMPLATE);
1232 RECORD(DECL_TEMPLATE_TYPE_PARM);
1233 RECORD(DECL_NON_TYPE_TEMPLATE_PARM);
1234 RECORD(DECL_TEMPLATE_TEMPLATE_PARM);
1235 RECORD(DECL_TYPE_ALIAS_TEMPLATE);
1236 RECORD(DECL_STATIC_ASSERT);
1237 RECORD(DECL_CXX_BASE_SPECIFIERS);
1238 RECORD(DECL_CXX_CTOR_INITIALIZERS);
1239 RECORD(DECL_INDIRECTFIELD);
1240 RECORD(DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK);
1241 RECORD(DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK);
1242 RECORD(DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION);
1243 RECORD(DECL_IMPORT);
1244 RECORD(DECL_OMP_THREADPRIVATE);
1246 RECORD(DECL_OBJC_TYPE_PARAM);
1247 RECORD(DECL_OMP_CAPTUREDEXPR);
1248 RECORD(DECL_PRAGMA_COMMENT);
1249 RECORD(DECL_PRAGMA_DETECT_MISMATCH);
1250 RECORD(DECL_OMP_DECLARE_REDUCTION);
1252 // Statements and Exprs can occur in the Decls and Types block.
1253 AddStmtsExprs(Stream, Record);
1255 BLOCK(PREPROCESSOR_DETAIL_BLOCK);
1256 RECORD(PPD_MACRO_EXPANSION);
1257 RECORD(PPD_MACRO_DEFINITION);
1258 RECORD(PPD_INCLUSION_DIRECTIVE);
1260 // Decls and Types block.
1261 BLOCK(EXTENSION_BLOCK);
1262 RECORD(EXTENSION_METADATA);
1264 BLOCK(UNHASHED_CONTROL_BLOCK);
1266 RECORD(DIAGNOSTIC_OPTIONS);
1267 RECORD(DIAG_PRAGMA_MAPPINGS);
1274 /// \brief Prepares a path for being written to an AST file by converting it
1275 /// to an absolute path and removing nested './'s.
1277 /// \return \c true if the path was changed.
1278 static bool cleanPathForOutput(FileManager &FileMgr,
1279 SmallVectorImpl<char> &Path) {
1280 bool Changed = FileMgr.makeAbsolutePath(Path);
1281 return Changed | llvm::sys::path::remove_dots(Path);
1284 /// \brief Adjusts the given filename to only write out the portion of the
1285 /// filename that is not part of the system root directory.
1287 /// \param Filename the file name to adjust.
1289 /// \param BaseDir When non-NULL, the PCH file is a relocatable AST file and
1290 /// the returned filename will be adjusted by this root directory.
1292 /// \returns either the original filename (if it needs no adjustment) or the
1293 /// adjusted filename (which points into the @p Filename parameter).
1295 adjustFilenameForRelocatableAST(const char *Filename, StringRef BaseDir) {
1296 assert(Filename && "No file name to adjust?");
1298 if (BaseDir.empty())
1301 // Verify that the filename and the system root have the same prefix.
1303 for (; Filename[Pos] && Pos < BaseDir.size(); ++Pos)
1304 if (Filename[Pos] != BaseDir[Pos])
1305 return Filename; // Prefixes don't match.
1307 // We hit the end of the filename before we hit the end of the system root.
1311 // If there's not a path separator at the end of the base directory nor
1312 // immediately after it, then this isn't within the base directory.
1313 if (!llvm::sys::path::is_separator(Filename[Pos])) {
1314 if (!llvm::sys::path::is_separator(BaseDir.back()))
1317 // If the file name has a '/' at the current position, skip over the '/'.
1318 // We distinguish relative paths from absolute paths by the
1319 // absence of '/' at the beginning of relative paths.
1321 // FIXME: This is wrong. We distinguish them by asking if the path is
1322 // absolute, which isn't the same thing. And there might be multiple '/'s
1323 // in a row. Use a better mechanism to indicate whether we have emitted an
1324 // absolute or relative path.
1328 return Filename + Pos;
1331 ASTFileSignature ASTWriter::createSignature(StringRef Bytes) {
1332 // Calculate the hash till start of UNHASHED_CONTROL_BLOCK.
1334 Hasher.update(ArrayRef<uint8_t>(Bytes.bytes_begin(), Bytes.size()));
1335 auto Hash = Hasher.result();
1337 // Convert to an array [5*i32].
1338 ASTFileSignature Signature;
1339 auto LShift = [&](unsigned char Val, unsigned Shift) {
1340 return (uint32_t)Val << Shift;
1342 for (int I = 0; I != 5; ++I)
1343 Signature[I] = LShift(Hash[I * 4 + 0], 24) | LShift(Hash[I * 4 + 1], 16) |
1344 LShift(Hash[I * 4 + 2], 8) | LShift(Hash[I * 4 + 3], 0);
1349 ASTFileSignature ASTWriter::writeUnhashedControlBlock(Preprocessor &PP,
1350 ASTContext &Context) {
1351 // Flush first to prepare the PCM hash (signature).
1352 Stream.FlushToWord();
1353 auto StartOfUnhashedControl = Stream.GetCurrentBitNo() >> 3;
1355 // Enter the block and prepare to write records.
1357 Stream.EnterSubblock(UNHASHED_CONTROL_BLOCK_ID, 5);
1359 // For implicit modules, write the hash of the PCM as its signature.
1360 ASTFileSignature Signature;
1361 if (WritingModule &&
1362 PP.getHeaderSearchInfo().getHeaderSearchOpts().ModulesHashContent) {
1363 Signature = createSignature(StringRef(Buffer.begin(), StartOfUnhashedControl));
1364 Record.append(Signature.begin(), Signature.end());
1365 Stream.EmitRecord(SIGNATURE, Record);
1369 // Diagnostic options.
1370 const auto &Diags = Context.getDiagnostics();
1371 const DiagnosticOptions &DiagOpts = Diags.getDiagnosticOptions();
1372 #define DIAGOPT(Name, Bits, Default) Record.push_back(DiagOpts.Name);
1373 #define ENUM_DIAGOPT(Name, Type, Bits, Default) \
1374 Record.push_back(static_cast<unsigned>(DiagOpts.get##Name()));
1375 #include "clang/Basic/DiagnosticOptions.def"
1376 Record.push_back(DiagOpts.Warnings.size());
1377 for (unsigned I = 0, N = DiagOpts.Warnings.size(); I != N; ++I)
1378 AddString(DiagOpts.Warnings[I], Record);
1379 Record.push_back(DiagOpts.Remarks.size());
1380 for (unsigned I = 0, N = DiagOpts.Remarks.size(); I != N; ++I)
1381 AddString(DiagOpts.Remarks[I], Record);
1382 // Note: we don't serialize the log or serialization file names, because they
1383 // are generally transient files and will almost always be overridden.
1384 Stream.EmitRecord(DIAGNOSTIC_OPTIONS, Record);
1386 // Write out the diagnostic/pragma mappings.
1387 WritePragmaDiagnosticMappings(Diags, /* IsModule = */ WritingModule);
1389 // Leave the options block.
1394 /// \brief Write the control block.
1395 void ASTWriter::WriteControlBlock(Preprocessor &PP, ASTContext &Context,
1397 const std::string &OutputFile) {
1398 using namespace llvm;
1399 Stream.EnterSubblock(CONTROL_BLOCK_ID, 5);
1403 auto MetadataAbbrev = std::make_shared<BitCodeAbbrev>();
1404 MetadataAbbrev->Add(BitCodeAbbrevOp(METADATA));
1405 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Major
1406 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Minor
1407 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang maj.
1408 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang min.
1409 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Relocatable
1410 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Timestamps
1411 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Errors
1412 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // SVN branch/tag
1413 unsigned MetadataAbbrevCode = Stream.EmitAbbrev(std::move(MetadataAbbrev));
1414 assert((!WritingModule || isysroot.empty()) &&
1415 "writing module as a relocatable PCH?");
1417 RecordData::value_type Record[] = {METADATA, VERSION_MAJOR, VERSION_MINOR,
1418 CLANG_VERSION_MAJOR, CLANG_VERSION_MINOR,
1419 !isysroot.empty(), IncludeTimestamps,
1420 ASTHasCompilerErrors};
1421 Stream.EmitRecordWithBlob(MetadataAbbrevCode, Record,
1422 getClangFullRepositoryVersion());
1424 if (WritingModule) {
1427 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1428 Abbrev->Add(BitCodeAbbrevOp(MODULE_NAME));
1429 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
1430 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1431 RecordData::value_type Record[] = {MODULE_NAME};
1432 Stream.EmitRecordWithBlob(AbbrevCode, Record, WritingModule->Name);
1435 if (WritingModule && WritingModule->Directory) {
1436 SmallString<128> BaseDir(WritingModule->Directory->getName());
1437 cleanPathForOutput(Context.getSourceManager().getFileManager(), BaseDir);
1439 // If the home of the module is the current working directory, then we
1440 // want to pick up the cwd of the build process loading the module, not
1441 // our cwd, when we load this module.
1442 if (!PP.getHeaderSearchInfo()
1443 .getHeaderSearchOpts()
1444 .ModuleMapFileHomeIsCwd ||
1445 WritingModule->Directory->getName() != StringRef(".")) {
1446 // Module directory.
1447 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1448 Abbrev->Add(BitCodeAbbrevOp(MODULE_DIRECTORY));
1449 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Directory
1450 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1452 RecordData::value_type Record[] = {MODULE_DIRECTORY};
1453 Stream.EmitRecordWithBlob(AbbrevCode, Record, BaseDir);
1456 // Write out all other paths relative to the base directory if possible.
1457 BaseDirectory.assign(BaseDir.begin(), BaseDir.end());
1458 } else if (!isysroot.empty()) {
1459 // Write out paths relative to the sysroot if possible.
1460 BaseDirectory = isysroot;
1464 if (WritingModule) {
1467 auto &Map = PP.getHeaderSearchInfo().getModuleMap();
1469 // Primary module map file.
1470 AddPath(Map.getModuleMapFileForUniquing(WritingModule)->getName(), Record);
1472 // Additional module map files.
1473 if (auto *AdditionalModMaps =
1474 Map.getAdditionalModuleMapFiles(WritingModule)) {
1475 Record.push_back(AdditionalModMaps->size());
1476 for (const FileEntry *F : *AdditionalModMaps)
1477 AddPath(F->getName(), Record);
1479 Record.push_back(0);
1482 Stream.EmitRecord(MODULE_MAP_FILE, Record);
1487 serialization::ModuleManager &Mgr = Chain->getModuleManager();
1490 for (ModuleFile &M : Mgr) {
1491 // Skip modules that weren't directly imported.
1492 if (!M.isDirectlyImported())
1495 Record.push_back((unsigned)M.Kind); // FIXME: Stable encoding
1496 AddSourceLocation(M.ImportLoc, Record);
1498 // If we have calculated signature, there is no need to store
1499 // the size or timestamp.
1500 Record.push_back(M.Signature ? 0 : M.File->getSize());
1501 Record.push_back(M.Signature ? 0 : getTimestampForOutput(M.File));
1503 for (auto I : M.Signature)
1504 Record.push_back(I);
1506 AddPath(M.FileName, Record);
1508 Stream.EmitRecord(IMPORTS, Record);
1511 // Write the options block.
1512 Stream.EnterSubblock(OPTIONS_BLOCK_ID, 4);
1514 // Language options.
1516 const LangOptions &LangOpts = Context.getLangOpts();
1517 #define LANGOPT(Name, Bits, Default, Description) \
1518 Record.push_back(LangOpts.Name);
1519 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1520 Record.push_back(static_cast<unsigned>(LangOpts.get##Name()));
1521 #include "clang/Basic/LangOptions.def"
1522 #define SANITIZER(NAME, ID) \
1523 Record.push_back(LangOpts.Sanitize.has(SanitizerKind::ID));
1524 #include "clang/Basic/Sanitizers.def"
1526 Record.push_back(LangOpts.ModuleFeatures.size());
1527 for (StringRef Feature : LangOpts.ModuleFeatures)
1528 AddString(Feature, Record);
1530 Record.push_back((unsigned) LangOpts.ObjCRuntime.getKind());
1531 AddVersionTuple(LangOpts.ObjCRuntime.getVersion(), Record);
1533 AddString(LangOpts.CurrentModule, Record);
1536 Record.push_back(LangOpts.CommentOpts.BlockCommandNames.size());
1537 for (const auto &I : LangOpts.CommentOpts.BlockCommandNames) {
1538 AddString(I, Record);
1540 Record.push_back(LangOpts.CommentOpts.ParseAllComments);
1542 // OpenMP offloading options.
1543 Record.push_back(LangOpts.OMPTargetTriples.size());
1544 for (auto &T : LangOpts.OMPTargetTriples)
1545 AddString(T.getTriple(), Record);
1547 AddString(LangOpts.OMPHostIRFile, Record);
1549 Stream.EmitRecord(LANGUAGE_OPTIONS, Record);
1553 const TargetInfo &Target = Context.getTargetInfo();
1554 const TargetOptions &TargetOpts = Target.getTargetOpts();
1555 AddString(TargetOpts.Triple, Record);
1556 AddString(TargetOpts.CPU, Record);
1557 AddString(TargetOpts.ABI, Record);
1558 Record.push_back(TargetOpts.FeaturesAsWritten.size());
1559 for (unsigned I = 0, N = TargetOpts.FeaturesAsWritten.size(); I != N; ++I) {
1560 AddString(TargetOpts.FeaturesAsWritten[I], Record);
1562 Record.push_back(TargetOpts.Features.size());
1563 for (unsigned I = 0, N = TargetOpts.Features.size(); I != N; ++I) {
1564 AddString(TargetOpts.Features[I], Record);
1566 Stream.EmitRecord(TARGET_OPTIONS, Record);
1568 // File system options.
1570 const FileSystemOptions &FSOpts =
1571 Context.getSourceManager().getFileManager().getFileSystemOpts();
1572 AddString(FSOpts.WorkingDir, Record);
1573 Stream.EmitRecord(FILE_SYSTEM_OPTIONS, Record);
1575 // Header search options.
1577 const HeaderSearchOptions &HSOpts
1578 = PP.getHeaderSearchInfo().getHeaderSearchOpts();
1579 AddString(HSOpts.Sysroot, Record);
1582 Record.push_back(HSOpts.UserEntries.size());
1583 for (unsigned I = 0, N = HSOpts.UserEntries.size(); I != N; ++I) {
1584 const HeaderSearchOptions::Entry &Entry = HSOpts.UserEntries[I];
1585 AddString(Entry.Path, Record);
1586 Record.push_back(static_cast<unsigned>(Entry.Group));
1587 Record.push_back(Entry.IsFramework);
1588 Record.push_back(Entry.IgnoreSysRoot);
1591 // System header prefixes.
1592 Record.push_back(HSOpts.SystemHeaderPrefixes.size());
1593 for (unsigned I = 0, N = HSOpts.SystemHeaderPrefixes.size(); I != N; ++I) {
1594 AddString(HSOpts.SystemHeaderPrefixes[I].Prefix, Record);
1595 Record.push_back(HSOpts.SystemHeaderPrefixes[I].IsSystemHeader);
1598 AddString(HSOpts.ResourceDir, Record);
1599 AddString(HSOpts.ModuleCachePath, Record);
1600 AddString(HSOpts.ModuleUserBuildPath, Record);
1601 Record.push_back(HSOpts.DisableModuleHash);
1602 Record.push_back(HSOpts.UseBuiltinIncludes);
1603 Record.push_back(HSOpts.UseStandardSystemIncludes);
1604 Record.push_back(HSOpts.UseStandardCXXIncludes);
1605 Record.push_back(HSOpts.UseLibcxx);
1606 // Write out the specific module cache path that contains the module files.
1607 AddString(PP.getHeaderSearchInfo().getModuleCachePath(), Record);
1608 Stream.EmitRecord(HEADER_SEARCH_OPTIONS, Record);
1610 // Preprocessor options.
1612 const PreprocessorOptions &PPOpts = PP.getPreprocessorOpts();
1614 // Macro definitions.
1615 Record.push_back(PPOpts.Macros.size());
1616 for (unsigned I = 0, N = PPOpts.Macros.size(); I != N; ++I) {
1617 AddString(PPOpts.Macros[I].first, Record);
1618 Record.push_back(PPOpts.Macros[I].second);
1622 Record.push_back(PPOpts.Includes.size());
1623 for (unsigned I = 0, N = PPOpts.Includes.size(); I != N; ++I)
1624 AddString(PPOpts.Includes[I], Record);
1627 Record.push_back(PPOpts.MacroIncludes.size());
1628 for (unsigned I = 0, N = PPOpts.MacroIncludes.size(); I != N; ++I)
1629 AddString(PPOpts.MacroIncludes[I], Record);
1631 Record.push_back(PPOpts.UsePredefines);
1632 // Detailed record is important since it is used for the module cache hash.
1633 Record.push_back(PPOpts.DetailedRecord);
1634 AddString(PPOpts.ImplicitPCHInclude, Record);
1635 AddString(PPOpts.ImplicitPTHInclude, Record);
1636 Record.push_back(static_cast<unsigned>(PPOpts.ObjCXXARCStandardLibrary));
1637 Stream.EmitRecord(PREPROCESSOR_OPTIONS, Record);
1639 // Leave the options block.
1642 // Original file name and file ID
1643 SourceManager &SM = Context.getSourceManager();
1644 if (const FileEntry *MainFile = SM.getFileEntryForID(SM.getMainFileID())) {
1645 auto FileAbbrev = std::make_shared<BitCodeAbbrev>();
1646 FileAbbrev->Add(BitCodeAbbrevOp(ORIGINAL_FILE));
1647 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // File ID
1648 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1649 unsigned FileAbbrevCode = Stream.EmitAbbrev(std::move(FileAbbrev));
1652 Record.push_back(ORIGINAL_FILE);
1653 Record.push_back(SM.getMainFileID().getOpaqueValue());
1654 EmitRecordWithPath(FileAbbrevCode, Record, MainFile->getName());
1658 Record.push_back(SM.getMainFileID().getOpaqueValue());
1659 Stream.EmitRecord(ORIGINAL_FILE_ID, Record);
1661 // Original PCH directory
1662 if (!OutputFile.empty() && OutputFile != "-") {
1663 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1664 Abbrev->Add(BitCodeAbbrevOp(ORIGINAL_PCH_DIR));
1665 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1666 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1668 SmallString<128> OutputPath(OutputFile);
1670 SM.getFileManager().makeAbsolutePath(OutputPath);
1671 StringRef origDir = llvm::sys::path::parent_path(OutputPath);
1673 RecordData::value_type Record[] = {ORIGINAL_PCH_DIR};
1674 Stream.EmitRecordWithBlob(AbbrevCode, Record, origDir);
1677 WriteInputFiles(Context.SourceMgr,
1678 PP.getHeaderSearchInfo().getHeaderSearchOpts(),
1679 PP.getLangOpts().Modules);
1685 /// \brief An input file.
1686 struct InputFileEntry {
1687 const FileEntry *File;
1690 bool BufferOverridden;
1693 } // end anonymous namespace
1695 void ASTWriter::WriteInputFiles(SourceManager &SourceMgr,
1696 HeaderSearchOptions &HSOpts,
1698 using namespace llvm;
1699 Stream.EnterSubblock(INPUT_FILES_BLOCK_ID, 4);
1701 // Create input-file abbreviation.
1702 auto IFAbbrev = std::make_shared<BitCodeAbbrev>();
1703 IFAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE));
1704 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
1705 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 12)); // Size
1706 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // Modification time
1707 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Overridden
1708 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Transient
1709 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1710 unsigned IFAbbrevCode = Stream.EmitAbbrev(std::move(IFAbbrev));
1712 // Get all ContentCache objects for files, sorted by whether the file is a
1713 // system one or not. System files go at the back, users files at the front.
1714 std::deque<InputFileEntry> SortedFiles;
1715 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size(); I != N; ++I) {
1716 // Get this source location entry.
1717 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
1718 assert(&SourceMgr.getSLocEntry(FileID::get(I)) == SLoc);
1720 // We only care about file entries that were not overridden.
1721 if (!SLoc->isFile())
1723 const SrcMgr::ContentCache *Cache = SLoc->getFile().getContentCache();
1724 if (!Cache->OrigEntry)
1727 InputFileEntry Entry;
1728 Entry.File = Cache->OrigEntry;
1729 Entry.IsSystemFile = Cache->IsSystemFile;
1730 Entry.IsTransient = Cache->IsTransient;
1731 Entry.BufferOverridden = Cache->BufferOverridden;
1732 if (Cache->IsSystemFile)
1733 SortedFiles.push_back(Entry);
1735 SortedFiles.push_front(Entry);
1738 unsigned UserFilesNum = 0;
1739 // Write out all of the input files.
1740 std::vector<uint64_t> InputFileOffsets;
1741 for (const auto &Entry : SortedFiles) {
1742 uint32_t &InputFileID = InputFileIDs[Entry.File];
1743 if (InputFileID != 0)
1744 continue; // already recorded this file.
1746 // Record this entry's offset.
1747 InputFileOffsets.push_back(Stream.GetCurrentBitNo());
1749 InputFileID = InputFileOffsets.size();
1751 if (!Entry.IsSystemFile)
1754 // Emit size/modification time for this file.
1755 // And whether this file was overridden.
1756 RecordData::value_type Record[] = {
1758 InputFileOffsets.size(),
1759 (uint64_t)Entry.File->getSize(),
1760 (uint64_t)getTimestampForOutput(Entry.File),
1761 Entry.BufferOverridden,
1764 EmitRecordWithPath(IFAbbrevCode, Record, Entry.File->getName());
1769 // Create input file offsets abbreviation.
1770 auto OffsetsAbbrev = std::make_shared<BitCodeAbbrev>();
1771 OffsetsAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE_OFFSETS));
1772 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # input files
1773 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # non-system
1775 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Array
1776 unsigned OffsetsAbbrevCode = Stream.EmitAbbrev(std::move(OffsetsAbbrev));
1778 // Write input file offsets.
1779 RecordData::value_type Record[] = {INPUT_FILE_OFFSETS,
1780 InputFileOffsets.size(), UserFilesNum};
1781 Stream.EmitRecordWithBlob(OffsetsAbbrevCode, Record, bytes(InputFileOffsets));
1784 //===----------------------------------------------------------------------===//
1785 // Source Manager Serialization
1786 //===----------------------------------------------------------------------===//
1788 /// \brief Create an abbreviation for the SLocEntry that refers to a
1790 static unsigned CreateSLocFileAbbrev(llvm::BitstreamWriter &Stream) {
1791 using namespace llvm;
1793 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1794 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_FILE_ENTRY));
1795 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1796 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1797 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Characteristic
1798 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1799 // FileEntry fields.
1800 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Input File ID
1801 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumCreatedFIDs
1802 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 24)); // FirstDeclIndex
1803 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumDecls
1804 return Stream.EmitAbbrev(std::move(Abbrev));
1807 /// \brief Create an abbreviation for the SLocEntry that refers to a
1809 static unsigned CreateSLocBufferAbbrev(llvm::BitstreamWriter &Stream) {
1810 using namespace llvm;
1812 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1813 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_BUFFER_ENTRY));
1814 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1815 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1816 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Characteristic
1817 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1818 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Buffer name blob
1819 return Stream.EmitAbbrev(std::move(Abbrev));
1822 /// \brief Create an abbreviation for the SLocEntry that refers to a
1824 static unsigned CreateSLocBufferBlobAbbrev(llvm::BitstreamWriter &Stream,
1826 using namespace llvm;
1828 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1829 Abbrev->Add(BitCodeAbbrevOp(Compressed ? SM_SLOC_BUFFER_BLOB_COMPRESSED
1830 : SM_SLOC_BUFFER_BLOB));
1832 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Uncompressed size
1833 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Blob
1834 return Stream.EmitAbbrev(std::move(Abbrev));
1837 /// \brief Create an abbreviation for the SLocEntry that refers to a macro
1839 static unsigned CreateSLocExpansionAbbrev(llvm::BitstreamWriter &Stream) {
1840 using namespace llvm;
1842 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1843 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_EXPANSION_ENTRY));
1844 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1845 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Spelling location
1846 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Start location
1847 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // End location
1848 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Token length
1849 return Stream.EmitAbbrev(std::move(Abbrev));
1854 // Trait used for the on-disk hash table of header search information.
1855 class HeaderFileInfoTrait {
1857 const HeaderSearch &HS;
1859 // Keep track of the framework names we've used during serialization.
1860 SmallVector<char, 128> FrameworkStringData;
1861 llvm::StringMap<unsigned> FrameworkNameOffset;
1864 HeaderFileInfoTrait(ASTWriter &Writer, const HeaderSearch &HS)
1865 : Writer(Writer), HS(HS) { }
1868 const FileEntry *FE;
1871 typedef const key_type &key_type_ref;
1873 typedef HeaderFileInfo data_type;
1874 typedef const data_type &data_type_ref;
1875 typedef unsigned hash_value_type;
1876 typedef unsigned offset_type;
1878 hash_value_type ComputeHash(key_type_ref key) {
1879 // The hash is based only on size/time of the file, so that the reader can
1880 // match even when symlinking or excess path elements ("foo/../", "../")
1881 // change the form of the name. However, complete path is still the key.
1882 return llvm::hash_combine(key.FE->getSize(),
1883 Writer.getTimestampForOutput(key.FE));
1886 std::pair<unsigned,unsigned>
1887 EmitKeyDataLength(raw_ostream& Out, key_type_ref key, data_type_ref Data) {
1888 using namespace llvm::support;
1889 endian::Writer<little> LE(Out);
1890 unsigned KeyLen = key.Filename.size() + 1 + 8 + 8;
1891 LE.write<uint16_t>(KeyLen);
1892 unsigned DataLen = 1 + 2 + 4 + 4;
1893 for (auto ModInfo : HS.getModuleMap().findAllModulesForHeader(key.FE))
1894 if (Writer.getLocalOrImportedSubmoduleID(ModInfo.getModule()))
1896 LE.write<uint8_t>(DataLen);
1897 return std::make_pair(KeyLen, DataLen);
1900 void EmitKey(raw_ostream& Out, key_type_ref key, unsigned KeyLen) {
1901 using namespace llvm::support;
1902 endian::Writer<little> LE(Out);
1903 LE.write<uint64_t>(key.FE->getSize());
1905 LE.write<uint64_t>(Writer.getTimestampForOutput(key.FE));
1907 Out.write(key.Filename.data(), KeyLen);
1910 void EmitData(raw_ostream &Out, key_type_ref key,
1911 data_type_ref Data, unsigned DataLen) {
1912 using namespace llvm::support;
1913 endian::Writer<little> LE(Out);
1914 uint64_t Start = Out.tell(); (void)Start;
1916 unsigned char Flags = (Data.isImport << 4)
1917 | (Data.isPragmaOnce << 3)
1918 | (Data.DirInfo << 1)
1919 | Data.IndexHeaderMapHeader;
1920 LE.write<uint8_t>(Flags);
1921 LE.write<uint16_t>(Data.NumIncludes);
1923 if (!Data.ControllingMacro)
1924 LE.write<uint32_t>(Data.ControllingMacroID);
1926 LE.write<uint32_t>(Writer.getIdentifierRef(Data.ControllingMacro));
1928 unsigned Offset = 0;
1929 if (!Data.Framework.empty()) {
1930 // If this header refers into a framework, save the framework name.
1931 llvm::StringMap<unsigned>::iterator Pos
1932 = FrameworkNameOffset.find(Data.Framework);
1933 if (Pos == FrameworkNameOffset.end()) {
1934 Offset = FrameworkStringData.size() + 1;
1935 FrameworkStringData.append(Data.Framework.begin(),
1936 Data.Framework.end());
1937 FrameworkStringData.push_back(0);
1939 FrameworkNameOffset[Data.Framework] = Offset;
1941 Offset = Pos->second;
1943 LE.write<uint32_t>(Offset);
1945 // FIXME: If the header is excluded, we should write out some
1946 // record of that fact.
1947 for (auto ModInfo : HS.getModuleMap().findAllModulesForHeader(key.FE)) {
1948 if (uint32_t ModID =
1949 Writer.getLocalOrImportedSubmoduleID(ModInfo.getModule())) {
1950 uint32_t Value = (ModID << 2) | (unsigned)ModInfo.getRole();
1951 assert((Value >> 2) == ModID && "overflow in header module info");
1952 LE.write<uint32_t>(Value);
1956 assert(Out.tell() - Start == DataLen && "Wrong data length");
1959 const char *strings_begin() const { return FrameworkStringData.begin(); }
1960 const char *strings_end() const { return FrameworkStringData.end(); }
1963 } // end anonymous namespace
1965 /// \brief Write the header search block for the list of files that
1967 /// \param HS The header search structure to save.
1968 void ASTWriter::WriteHeaderSearch(const HeaderSearch &HS) {
1969 SmallVector<const FileEntry *, 16> FilesByUID;
1970 HS.getFileMgr().GetUniqueIDMapping(FilesByUID);
1972 if (FilesByUID.size() > HS.header_file_size())
1973 FilesByUID.resize(HS.header_file_size());
1975 HeaderFileInfoTrait GeneratorTrait(*this, HS);
1976 llvm::OnDiskChainedHashTableGenerator<HeaderFileInfoTrait> Generator;
1977 SmallVector<const char *, 4> SavedStrings;
1978 unsigned NumHeaderSearchEntries = 0;
1979 for (unsigned UID = 0, LastUID = FilesByUID.size(); UID != LastUID; ++UID) {
1980 const FileEntry *File = FilesByUID[UID];
1984 // Get the file info. This will load info from the external source if
1985 // necessary. Skip emitting this file if we have no information on it
1986 // as a header file (in which case HFI will be null) or if it hasn't
1987 // changed since it was loaded. Also skip it if it's for a modular header
1988 // from a different module; in that case, we rely on the module(s)
1989 // containing the header to provide this information.
1990 const HeaderFileInfo *HFI =
1991 HS.getExistingFileInfo(File, /*WantExternal*/!Chain);
1992 if (!HFI || (HFI->isModuleHeader && !HFI->isCompilingModuleHeader))
1995 // Massage the file path into an appropriate form.
1996 StringRef Filename = File->getName();
1997 SmallString<128> FilenameTmp(Filename);
1998 if (PreparePathForOutput(FilenameTmp)) {
1999 // If we performed any translation on the file name at all, we need to
2000 // save this string, since the generator will refer to it later.
2001 Filename = StringRef(strdup(FilenameTmp.c_str()));
2002 SavedStrings.push_back(Filename.data());
2005 HeaderFileInfoTrait::key_type key = { File, Filename };
2006 Generator.insert(key, *HFI, GeneratorTrait);
2007 ++NumHeaderSearchEntries;
2010 // Create the on-disk hash table in a buffer.
2011 SmallString<4096> TableData;
2012 uint32_t BucketOffset;
2014 using namespace llvm::support;
2015 llvm::raw_svector_ostream Out(TableData);
2016 // Make sure that no bucket is at offset 0
2017 endian::Writer<little>(Out).write<uint32_t>(0);
2018 BucketOffset = Generator.Emit(Out, GeneratorTrait);
2021 // Create a blob abbreviation
2022 using namespace llvm;
2024 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2025 Abbrev->Add(BitCodeAbbrevOp(HEADER_SEARCH_TABLE));
2026 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2027 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2028 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2029 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2030 unsigned TableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2032 // Write the header search table
2033 RecordData::value_type Record[] = {HEADER_SEARCH_TABLE, BucketOffset,
2034 NumHeaderSearchEntries, TableData.size()};
2035 TableData.append(GeneratorTrait.strings_begin(),GeneratorTrait.strings_end());
2036 Stream.EmitRecordWithBlob(TableAbbrev, Record, TableData);
2038 // Free all of the strings we had to duplicate.
2039 for (unsigned I = 0, N = SavedStrings.size(); I != N; ++I)
2040 free(const_cast<char *>(SavedStrings[I]));
2043 static void emitBlob(llvm::BitstreamWriter &Stream, StringRef Blob,
2044 unsigned SLocBufferBlobCompressedAbbrv,
2045 unsigned SLocBufferBlobAbbrv) {
2046 typedef ASTWriter::RecordData::value_type RecordDataType;
2048 // Compress the buffer if possible. We expect that almost all PCM
2049 // consumers will not want its contents.
2050 SmallString<0> CompressedBuffer;
2051 if (llvm::zlib::isAvailable()) {
2052 llvm::Error E = llvm::zlib::compress(Blob.drop_back(1), CompressedBuffer);
2054 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB_COMPRESSED,
2056 Stream.EmitRecordWithBlob(SLocBufferBlobCompressedAbbrv, Record,
2060 llvm::consumeError(std::move(E));
2063 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB};
2064 Stream.EmitRecordWithBlob(SLocBufferBlobAbbrv, Record, Blob);
2067 /// \brief Writes the block containing the serialized form of the
2070 /// TODO: We should probably use an on-disk hash table (stored in a
2071 /// blob), indexed based on the file name, so that we only create
2072 /// entries for files that we actually need. In the common case (no
2073 /// errors), we probably won't have to create file entries for any of
2074 /// the files in the AST.
2075 void ASTWriter::WriteSourceManagerBlock(SourceManager &SourceMgr,
2076 const Preprocessor &PP) {
2079 // Enter the source manager block.
2080 Stream.EnterSubblock(SOURCE_MANAGER_BLOCK_ID, 4);
2082 // Abbreviations for the various kinds of source-location entries.
2083 unsigned SLocFileAbbrv = CreateSLocFileAbbrev(Stream);
2084 unsigned SLocBufferAbbrv = CreateSLocBufferAbbrev(Stream);
2085 unsigned SLocBufferBlobAbbrv = CreateSLocBufferBlobAbbrev(Stream, false);
2086 unsigned SLocBufferBlobCompressedAbbrv =
2087 CreateSLocBufferBlobAbbrev(Stream, true);
2088 unsigned SLocExpansionAbbrv = CreateSLocExpansionAbbrev(Stream);
2090 // Write out the source location entry table. We skip the first
2091 // entry, which is always the same dummy entry.
2092 std::vector<uint32_t> SLocEntryOffsets;
2093 RecordData PreloadSLocs;
2094 SLocEntryOffsets.reserve(SourceMgr.local_sloc_entry_size() - 1);
2095 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size();
2097 // Get this source location entry.
2098 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
2099 FileID FID = FileID::get(I);
2100 assert(&SourceMgr.getSLocEntry(FID) == SLoc);
2102 // Record the offset of this source-location entry.
2103 SLocEntryOffsets.push_back(Stream.GetCurrentBitNo());
2105 // Figure out which record code to use.
2107 if (SLoc->isFile()) {
2108 const SrcMgr::ContentCache *Cache = SLoc->getFile().getContentCache();
2109 if (Cache->OrigEntry) {
2110 Code = SM_SLOC_FILE_ENTRY;
2112 Code = SM_SLOC_BUFFER_ENTRY;
2114 Code = SM_SLOC_EXPANSION_ENTRY;
2116 Record.push_back(Code);
2118 // Starting offset of this entry within this module, so skip the dummy.
2119 Record.push_back(SLoc->getOffset() - 2);
2120 if (SLoc->isFile()) {
2121 const SrcMgr::FileInfo &File = SLoc->getFile();
2122 AddSourceLocation(File.getIncludeLoc(), Record);
2123 Record.push_back(File.getFileCharacteristic()); // FIXME: stable encoding
2124 Record.push_back(File.hasLineDirectives());
2126 const SrcMgr::ContentCache *Content = File.getContentCache();
2127 bool EmitBlob = false;
2128 if (Content->OrigEntry) {
2129 assert(Content->OrigEntry == Content->ContentsEntry &&
2130 "Writing to AST an overridden file is not supported");
2132 // The source location entry is a file. Emit input file ID.
2133 assert(InputFileIDs[Content->OrigEntry] != 0 && "Missed file entry");
2134 Record.push_back(InputFileIDs[Content->OrigEntry]);
2136 Record.push_back(File.NumCreatedFIDs);
2138 FileDeclIDsTy::iterator FDI = FileDeclIDs.find(FID);
2139 if (FDI != FileDeclIDs.end()) {
2140 Record.push_back(FDI->second->FirstDeclIndex);
2141 Record.push_back(FDI->second->DeclIDs.size());
2143 Record.push_back(0);
2144 Record.push_back(0);
2147 Stream.EmitRecordWithAbbrev(SLocFileAbbrv, Record);
2149 if (Content->BufferOverridden || Content->IsTransient)
2152 // The source location entry is a buffer. The blob associated
2153 // with this entry contains the contents of the buffer.
2155 // We add one to the size so that we capture the trailing NULL
2156 // that is required by llvm::MemoryBuffer::getMemBuffer (on
2157 // the reader side).
2158 const llvm::MemoryBuffer *Buffer
2159 = Content->getBuffer(PP.getDiagnostics(), PP.getSourceManager());
2160 StringRef Name = Buffer->getBufferIdentifier();
2161 Stream.EmitRecordWithBlob(SLocBufferAbbrv, Record,
2162 StringRef(Name.data(), Name.size() + 1));
2165 if (Name == "<built-in>")
2166 PreloadSLocs.push_back(SLocEntryOffsets.size());
2170 // Include the implicit terminating null character in the on-disk buffer
2171 // if we're writing it uncompressed.
2172 const llvm::MemoryBuffer *Buffer =
2173 Content->getBuffer(PP.getDiagnostics(), PP.getSourceManager());
2174 StringRef Blob(Buffer->getBufferStart(), Buffer->getBufferSize() + 1);
2175 emitBlob(Stream, Blob, SLocBufferBlobCompressedAbbrv,
2176 SLocBufferBlobAbbrv);
2179 // The source location entry is a macro expansion.
2180 const SrcMgr::ExpansionInfo &Expansion = SLoc->getExpansion();
2181 AddSourceLocation(Expansion.getSpellingLoc(), Record);
2182 AddSourceLocation(Expansion.getExpansionLocStart(), Record);
2183 AddSourceLocation(Expansion.isMacroArgExpansion()
2185 : Expansion.getExpansionLocEnd(),
2188 // Compute the token length for this macro expansion.
2189 unsigned NextOffset = SourceMgr.getNextLocalOffset();
2191 NextOffset = SourceMgr.getLocalSLocEntry(I + 1).getOffset();
2192 Record.push_back(NextOffset - SLoc->getOffset() - 1);
2193 Stream.EmitRecordWithAbbrev(SLocExpansionAbbrv, Record);
2199 if (SLocEntryOffsets.empty())
2202 // Write the source-location offsets table into the AST block. This
2203 // table is used for lazily loading source-location information.
2204 using namespace llvm;
2206 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2207 Abbrev->Add(BitCodeAbbrevOp(SOURCE_LOCATION_OFFSETS));
2208 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs
2209 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // total size
2210 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets
2211 unsigned SLocOffsetsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2213 RecordData::value_type Record[] = {
2214 SOURCE_LOCATION_OFFSETS, SLocEntryOffsets.size(),
2215 SourceMgr.getNextLocalOffset() - 1 /* skip dummy */};
2216 Stream.EmitRecordWithBlob(SLocOffsetsAbbrev, Record,
2217 bytes(SLocEntryOffsets));
2219 // Write the source location entry preloads array, telling the AST
2220 // reader which source locations entries it should load eagerly.
2221 Stream.EmitRecord(SOURCE_LOCATION_PRELOADS, PreloadSLocs);
2223 // Write the line table. It depends on remapping working, so it must come
2224 // after the source location offsets.
2225 if (SourceMgr.hasLineTable()) {
2226 LineTableInfo &LineTable = SourceMgr.getLineTable();
2230 // Emit the needed file names.
2231 llvm::DenseMap<int, int> FilenameMap;
2232 for (const auto &L : LineTable) {
2235 for (auto &LE : L.second) {
2236 if (FilenameMap.insert(std::make_pair(LE.FilenameID,
2237 FilenameMap.size())).second)
2238 AddPath(LineTable.getFilename(LE.FilenameID), Record);
2241 Record.push_back(0);
2243 // Emit the line entries
2244 for (const auto &L : LineTable) {
2245 // Only emit entries for local files.
2250 Record.push_back(L.first.ID);
2252 // Emit the line entries
2253 Record.push_back(L.second.size());
2254 for (const auto &LE : L.second) {
2255 Record.push_back(LE.FileOffset);
2256 Record.push_back(LE.LineNo);
2257 Record.push_back(FilenameMap[LE.FilenameID]);
2258 Record.push_back((unsigned)LE.FileKind);
2259 Record.push_back(LE.IncludeOffset);
2263 Stream.EmitRecord(SOURCE_MANAGER_LINE_TABLE, Record);
2267 //===----------------------------------------------------------------------===//
2268 // Preprocessor Serialization
2269 //===----------------------------------------------------------------------===//
2271 static bool shouldIgnoreMacro(MacroDirective *MD, bool IsModule,
2272 const Preprocessor &PP) {
2273 if (MacroInfo *MI = MD->getMacroInfo())
2274 if (MI->isBuiltinMacro())
2278 SourceLocation Loc = MD->getLocation();
2279 if (Loc.isInvalid())
2281 if (PP.getSourceManager().getFileID(Loc) == PP.getPredefinesFileID())
2288 /// \brief Writes the block containing the serialized form of the
2291 void ASTWriter::WritePreprocessor(const Preprocessor &PP, bool IsModule) {
2292 PreprocessingRecord *PPRec = PP.getPreprocessingRecord();
2294 WritePreprocessorDetail(*PPRec);
2297 RecordData ModuleMacroRecord;
2299 // If the preprocessor __COUNTER__ value has been bumped, remember it.
2300 if (PP.getCounterValue() != 0) {
2301 RecordData::value_type Record[] = {PP.getCounterValue()};
2302 Stream.EmitRecord(PP_COUNTER_VALUE, Record);
2305 // Enter the preprocessor block.
2306 Stream.EnterSubblock(PREPROCESSOR_BLOCK_ID, 3);
2308 // If the AST file contains __DATE__ or __TIME__ emit a warning about this.
2309 // FIXME: Include a location for the use, and say which one was used.
2310 if (PP.SawDateOrTime())
2311 PP.Diag(SourceLocation(), diag::warn_module_uses_date_time) << IsModule;
2313 // Loop over all the macro directives that are live at the end of the file,
2314 // emitting each to the PP section.
2316 // Construct the list of identifiers with macro directives that need to be
2318 SmallVector<const IdentifierInfo *, 128> MacroIdentifiers;
2319 for (auto &Id : PP.getIdentifierTable())
2320 if (Id.second->hadMacroDefinition() &&
2321 (!Id.second->isFromAST() ||
2322 Id.second->hasChangedSinceDeserialization()))
2323 MacroIdentifiers.push_back(Id.second);
2324 // Sort the set of macro definitions that need to be serialized by the
2325 // name of the macro, to provide a stable ordering.
2326 std::sort(MacroIdentifiers.begin(), MacroIdentifiers.end(),
2327 llvm::less_ptr<IdentifierInfo>());
2329 // Emit the macro directives as a list and associate the offset with the
2330 // identifier they belong to.
2331 for (const IdentifierInfo *Name : MacroIdentifiers) {
2332 MacroDirective *MD = PP.getLocalMacroDirectiveHistory(Name);
2333 auto StartOffset = Stream.GetCurrentBitNo();
2335 // Emit the macro directives in reverse source order.
2336 for (; MD; MD = MD->getPrevious()) {
2337 // Once we hit an ignored macro, we're done: the rest of the chain
2338 // will all be ignored macros.
2339 if (shouldIgnoreMacro(MD, IsModule, PP))
2342 AddSourceLocation(MD->getLocation(), Record);
2343 Record.push_back(MD->getKind());
2344 if (auto *DefMD = dyn_cast<DefMacroDirective>(MD)) {
2345 Record.push_back(getMacroRef(DefMD->getInfo(), Name));
2346 } else if (auto *VisMD = dyn_cast<VisibilityMacroDirective>(MD)) {
2347 Record.push_back(VisMD->isPublic());
2351 // Write out any exported module macros.
2352 bool EmittedModuleMacros = false;
2353 // We write out exported module macros for PCH as well.
2354 auto Leafs = PP.getLeafModuleMacros(Name);
2355 SmallVector<ModuleMacro*, 8> Worklist(Leafs.begin(), Leafs.end());
2356 llvm::DenseMap<ModuleMacro*, unsigned> Visits;
2357 while (!Worklist.empty()) {
2358 auto *Macro = Worklist.pop_back_val();
2360 // Emit a record indicating this submodule exports this macro.
2361 ModuleMacroRecord.push_back(
2362 getSubmoduleID(Macro->getOwningModule()));
2363 ModuleMacroRecord.push_back(getMacroRef(Macro->getMacroInfo(), Name));
2364 for (auto *M : Macro->overrides())
2365 ModuleMacroRecord.push_back(getSubmoduleID(M->getOwningModule()));
2367 Stream.EmitRecord(PP_MODULE_MACRO, ModuleMacroRecord);
2368 ModuleMacroRecord.clear();
2370 // Enqueue overridden macros once we've visited all their ancestors.
2371 for (auto *M : Macro->overrides())
2372 if (++Visits[M] == M->getNumOverridingMacros())
2373 Worklist.push_back(M);
2375 EmittedModuleMacros = true;
2378 if (Record.empty() && !EmittedModuleMacros)
2381 IdentMacroDirectivesOffsetMap[Name] = StartOffset;
2382 Stream.EmitRecord(PP_MACRO_DIRECTIVE_HISTORY, Record);
2386 /// \brief Offsets of each of the macros into the bitstream, indexed by
2387 /// the local macro ID
2389 /// For each identifier that is associated with a macro, this map
2390 /// provides the offset into the bitstream where that macro is
2392 std::vector<uint32_t> MacroOffsets;
2394 for (unsigned I = 0, N = MacroInfosToEmit.size(); I != N; ++I) {
2395 const IdentifierInfo *Name = MacroInfosToEmit[I].Name;
2396 MacroInfo *MI = MacroInfosToEmit[I].MI;
2397 MacroID ID = MacroInfosToEmit[I].ID;
2399 if (ID < FirstMacroID) {
2400 assert(0 && "Loaded MacroInfo entered MacroInfosToEmit ?");
2404 // Record the local offset of this macro.
2405 unsigned Index = ID - FirstMacroID;
2406 if (Index == MacroOffsets.size())
2407 MacroOffsets.push_back(Stream.GetCurrentBitNo());
2409 if (Index > MacroOffsets.size())
2410 MacroOffsets.resize(Index + 1);
2412 MacroOffsets[Index] = Stream.GetCurrentBitNo();
2415 AddIdentifierRef(Name, Record);
2416 AddSourceLocation(MI->getDefinitionLoc(), Record);
2417 AddSourceLocation(MI->getDefinitionEndLoc(), Record);
2418 Record.push_back(MI->isUsed());
2419 Record.push_back(MI->isUsedForHeaderGuard());
2421 if (MI->isObjectLike()) {
2422 Code = PP_MACRO_OBJECT_LIKE;
2424 Code = PP_MACRO_FUNCTION_LIKE;
2426 Record.push_back(MI->isC99Varargs());
2427 Record.push_back(MI->isGNUVarargs());
2428 Record.push_back(MI->hasCommaPasting());
2429 Record.push_back(MI->getNumArgs());
2430 for (const IdentifierInfo *Arg : MI->args())
2431 AddIdentifierRef(Arg, Record);
2434 // If we have a detailed preprocessing record, record the macro definition
2435 // ID that corresponds to this macro.
2437 Record.push_back(MacroDefinitions[PPRec->findMacroDefinition(MI)]);
2439 Stream.EmitRecord(Code, Record);
2442 // Emit the tokens array.
2443 for (unsigned TokNo = 0, e = MI->getNumTokens(); TokNo != e; ++TokNo) {
2444 // Note that we know that the preprocessor does not have any annotation
2445 // tokens in it because they are created by the parser, and thus can't
2446 // be in a macro definition.
2447 const Token &Tok = MI->getReplacementToken(TokNo);
2448 AddToken(Tok, Record);
2449 Stream.EmitRecord(PP_TOKEN, Record);
2457 // Write the offsets table for macro IDs.
2458 using namespace llvm;
2460 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2461 Abbrev->Add(BitCodeAbbrevOp(MACRO_OFFSET));
2462 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of macros
2463 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
2464 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2466 unsigned MacroOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2468 RecordData::value_type Record[] = {MACRO_OFFSET, MacroOffsets.size(),
2469 FirstMacroID - NUM_PREDEF_MACRO_IDS};
2470 Stream.EmitRecordWithBlob(MacroOffsetAbbrev, Record, bytes(MacroOffsets));
2474 void ASTWriter::WritePreprocessorDetail(PreprocessingRecord &PPRec) {
2475 if (PPRec.local_begin() == PPRec.local_end())
2478 SmallVector<PPEntityOffset, 64> PreprocessedEntityOffsets;
2480 // Enter the preprocessor block.
2481 Stream.EnterSubblock(PREPROCESSOR_DETAIL_BLOCK_ID, 3);
2483 // If the preprocessor has a preprocessing record, emit it.
2484 unsigned NumPreprocessingRecords = 0;
2485 using namespace llvm;
2487 // Set up the abbreviation for
2488 unsigned InclusionAbbrev = 0;
2490 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2491 Abbrev->Add(BitCodeAbbrevOp(PPD_INCLUSION_DIRECTIVE));
2492 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // filename length
2493 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // in quotes
2494 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // kind
2495 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // imported module
2496 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2497 InclusionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2500 unsigned FirstPreprocessorEntityID
2501 = (Chain ? PPRec.getNumLoadedPreprocessedEntities() : 0)
2502 + NUM_PREDEF_PP_ENTITY_IDS;
2503 unsigned NextPreprocessorEntityID = FirstPreprocessorEntityID;
2505 for (PreprocessingRecord::iterator E = PPRec.local_begin(),
2506 EEnd = PPRec.local_end();
2508 (void)++E, ++NumPreprocessingRecords, ++NextPreprocessorEntityID) {
2511 PreprocessedEntityOffsets.push_back(
2512 PPEntityOffset((*E)->getSourceRange(), Stream.GetCurrentBitNo()));
2514 if (auto *MD = dyn_cast<MacroDefinitionRecord>(*E)) {
2515 // Record this macro definition's ID.
2516 MacroDefinitions[MD] = NextPreprocessorEntityID;
2518 AddIdentifierRef(MD->getName(), Record);
2519 Stream.EmitRecord(PPD_MACRO_DEFINITION, Record);
2523 if (auto *ME = dyn_cast<MacroExpansion>(*E)) {
2524 Record.push_back(ME->isBuiltinMacro());
2525 if (ME->isBuiltinMacro())
2526 AddIdentifierRef(ME->getName(), Record);
2528 Record.push_back(MacroDefinitions[ME->getDefinition()]);
2529 Stream.EmitRecord(PPD_MACRO_EXPANSION, Record);
2533 if (auto *ID = dyn_cast<InclusionDirective>(*E)) {
2534 Record.push_back(PPD_INCLUSION_DIRECTIVE);
2535 Record.push_back(ID->getFileName().size());
2536 Record.push_back(ID->wasInQuotes());
2537 Record.push_back(static_cast<unsigned>(ID->getKind()));
2538 Record.push_back(ID->importedModule());
2539 SmallString<64> Buffer;
2540 Buffer += ID->getFileName();
2541 // Check that the FileEntry is not null because it was not resolved and
2542 // we create a PCH even with compiler errors.
2544 Buffer += ID->getFile()->getName();
2545 Stream.EmitRecordWithBlob(InclusionAbbrev, Record, Buffer);
2549 llvm_unreachable("Unhandled PreprocessedEntity in ASTWriter");
2553 // Write the offsets table for the preprocessing record.
2554 if (NumPreprocessingRecords > 0) {
2555 assert(PreprocessedEntityOffsets.size() == NumPreprocessingRecords);
2557 // Write the offsets table for identifier IDs.
2558 using namespace llvm;
2560 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2561 Abbrev->Add(BitCodeAbbrevOp(PPD_ENTITIES_OFFSETS));
2562 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first pp entity
2563 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2564 unsigned PPEOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2566 RecordData::value_type Record[] = {PPD_ENTITIES_OFFSETS,
2567 FirstPreprocessorEntityID -
2568 NUM_PREDEF_PP_ENTITY_IDS};
2569 Stream.EmitRecordWithBlob(PPEOffsetAbbrev, Record,
2570 bytes(PreprocessedEntityOffsets));
2574 unsigned ASTWriter::getLocalOrImportedSubmoduleID(Module *Mod) {
2578 llvm::DenseMap<Module *, unsigned>::iterator Known = SubmoduleIDs.find(Mod);
2579 if (Known != SubmoduleIDs.end())
2580 return Known->second;
2582 auto *Top = Mod->getTopLevelModule();
2583 if (Top != WritingModule &&
2584 (getLangOpts().CompilingPCH ||
2585 !Top->fullModuleNameIs(StringRef(getLangOpts().CurrentModule))))
2588 return SubmoduleIDs[Mod] = NextSubmoduleID++;
2591 unsigned ASTWriter::getSubmoduleID(Module *Mod) {
2592 // FIXME: This can easily happen, if we have a reference to a submodule that
2593 // did not result in us loading a module file for that submodule. For
2594 // instance, a cross-top-level-module 'conflict' declaration will hit this.
2595 unsigned ID = getLocalOrImportedSubmoduleID(Mod);
2596 assert((ID || !Mod) &&
2597 "asked for module ID for non-local, non-imported module");
2601 /// \brief Compute the number of modules within the given tree (including the
2603 static unsigned getNumberOfModules(Module *Mod) {
2604 unsigned ChildModules = 0;
2605 for (auto Sub = Mod->submodule_begin(), SubEnd = Mod->submodule_end();
2606 Sub != SubEnd; ++Sub)
2607 ChildModules += getNumberOfModules(*Sub);
2609 return ChildModules + 1;
2612 void ASTWriter::WriteSubmodules(Module *WritingModule) {
2613 // Enter the submodule description block.
2614 Stream.EnterSubblock(SUBMODULE_BLOCK_ID, /*bits for abbreviations*/5);
2616 // Write the abbreviations needed for the submodules block.
2617 using namespace llvm;
2619 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2620 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_DEFINITION));
2621 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
2622 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Parent
2623 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2624 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExplicit
2625 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsSystem
2626 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExternC
2627 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferSubmodules...
2628 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExplicit...
2629 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExportWild...
2630 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ConfigMacrosExh...
2631 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2632 unsigned DefinitionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2634 Abbrev = std::make_shared<BitCodeAbbrev>();
2635 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_HEADER));
2636 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2637 unsigned UmbrellaAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2639 Abbrev = std::make_shared<BitCodeAbbrev>();
2640 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_HEADER));
2641 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2642 unsigned HeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2644 Abbrev = std::make_shared<BitCodeAbbrev>();
2645 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TOPHEADER));
2646 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2647 unsigned TopHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2649 Abbrev = std::make_shared<BitCodeAbbrev>();
2650 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_DIR));
2651 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2652 unsigned UmbrellaDirAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2654 Abbrev = std::make_shared<BitCodeAbbrev>();
2655 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_REQUIRES));
2656 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // State
2657 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Feature
2658 unsigned RequiresAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2660 Abbrev = std::make_shared<BitCodeAbbrev>();
2661 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXCLUDED_HEADER));
2662 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2663 unsigned ExcludedHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2665 Abbrev = std::make_shared<BitCodeAbbrev>();
2666 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TEXTUAL_HEADER));
2667 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2668 unsigned TextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2670 Abbrev = std::make_shared<BitCodeAbbrev>();
2671 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_HEADER));
2672 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2673 unsigned PrivateHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2675 Abbrev = std::make_shared<BitCodeAbbrev>();
2676 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_TEXTUAL_HEADER));
2677 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2678 unsigned PrivateTextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2680 Abbrev = std::make_shared<BitCodeAbbrev>();
2681 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_LINK_LIBRARY));
2682 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2683 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2684 unsigned LinkLibraryAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2686 Abbrev = std::make_shared<BitCodeAbbrev>();
2687 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFIG_MACRO));
2688 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2689 unsigned ConfigMacroAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2691 Abbrev = std::make_shared<BitCodeAbbrev>();
2692 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFLICT));
2693 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Other module
2694 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Message
2695 unsigned ConflictAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2697 // Write the submodule metadata block.
2698 RecordData::value_type Record[] = {
2699 getNumberOfModules(WritingModule),
2700 FirstSubmoduleID - NUM_PREDEF_SUBMODULE_IDS,
2701 (unsigned)WritingModule->Kind};
2702 Stream.EmitRecord(SUBMODULE_METADATA, Record);
2704 // Write all of the submodules.
2705 std::queue<Module *> Q;
2706 Q.push(WritingModule);
2707 while (!Q.empty()) {
2708 Module *Mod = Q.front();
2710 unsigned ID = getSubmoduleID(Mod);
2712 uint64_t ParentID = 0;
2714 assert(SubmoduleIDs[Mod->Parent] && "Submodule parent not written?");
2715 ParentID = SubmoduleIDs[Mod->Parent];
2718 // Emit the definition of the block.
2720 RecordData::value_type Record[] = {SUBMODULE_DEFINITION,
2727 Mod->InferSubmodules,
2728 Mod->InferExplicitSubmodules,
2729 Mod->InferExportWildcard,
2730 Mod->ConfigMacrosExhaustive};
2731 Stream.EmitRecordWithBlob(DefinitionAbbrev, Record, Mod->Name);
2734 // Emit the requirements.
2735 for (const auto &R : Mod->Requirements) {
2736 RecordData::value_type Record[] = {SUBMODULE_REQUIRES, R.second};
2737 Stream.EmitRecordWithBlob(RequiresAbbrev, Record, R.first);
2740 // Emit the umbrella header, if there is one.
2741 if (auto UmbrellaHeader = Mod->getUmbrellaHeader()) {
2742 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_HEADER};
2743 Stream.EmitRecordWithBlob(UmbrellaAbbrev, Record,
2744 UmbrellaHeader.NameAsWritten);
2745 } else if (auto UmbrellaDir = Mod->getUmbrellaDir()) {
2746 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_DIR};
2747 Stream.EmitRecordWithBlob(UmbrellaDirAbbrev, Record,
2748 UmbrellaDir.NameAsWritten);
2751 // Emit the headers.
2753 unsigned RecordKind;
2755 Module::HeaderKind HeaderKind;
2757 {SUBMODULE_HEADER, HeaderAbbrev, Module::HK_Normal},
2758 {SUBMODULE_TEXTUAL_HEADER, TextualHeaderAbbrev, Module::HK_Textual},
2759 {SUBMODULE_PRIVATE_HEADER, PrivateHeaderAbbrev, Module::HK_Private},
2760 {SUBMODULE_PRIVATE_TEXTUAL_HEADER, PrivateTextualHeaderAbbrev,
2761 Module::HK_PrivateTextual},
2762 {SUBMODULE_EXCLUDED_HEADER, ExcludedHeaderAbbrev, Module::HK_Excluded}
2764 for (auto &HL : HeaderLists) {
2765 RecordData::value_type Record[] = {HL.RecordKind};
2766 for (auto &H : Mod->Headers[HL.HeaderKind])
2767 Stream.EmitRecordWithBlob(HL.Abbrev, Record, H.NameAsWritten);
2770 // Emit the top headers.
2772 auto TopHeaders = Mod->getTopHeaders(PP->getFileManager());
2773 RecordData::value_type Record[] = {SUBMODULE_TOPHEADER};
2774 for (auto *H : TopHeaders)
2775 Stream.EmitRecordWithBlob(TopHeaderAbbrev, Record, H->getName());
2778 // Emit the imports.
2779 if (!Mod->Imports.empty()) {
2781 for (auto *I : Mod->Imports)
2782 Record.push_back(getSubmoduleID(I));
2783 Stream.EmitRecord(SUBMODULE_IMPORTS, Record);
2786 // Emit the exports.
2787 if (!Mod->Exports.empty()) {
2789 for (const auto &E : Mod->Exports) {
2790 // FIXME: This may fail; we don't require that all exported modules
2791 // are local or imported.
2792 Record.push_back(getSubmoduleID(E.getPointer()));
2793 Record.push_back(E.getInt());
2795 Stream.EmitRecord(SUBMODULE_EXPORTS, Record);
2798 //FIXME: How do we emit the 'use'd modules? They may not be submodules.
2799 // Might be unnecessary as use declarations are only used to build the
2802 // Emit the link libraries.
2803 for (const auto &LL : Mod->LinkLibraries) {
2804 RecordData::value_type Record[] = {SUBMODULE_LINK_LIBRARY,
2806 Stream.EmitRecordWithBlob(LinkLibraryAbbrev, Record, LL.Library);
2809 // Emit the conflicts.
2810 for (const auto &C : Mod->Conflicts) {
2811 // FIXME: This may fail; we don't require that all conflicting modules
2812 // are local or imported.
2813 RecordData::value_type Record[] = {SUBMODULE_CONFLICT,
2814 getSubmoduleID(C.Other)};
2815 Stream.EmitRecordWithBlob(ConflictAbbrev, Record, C.Message);
2818 // Emit the configuration macros.
2819 for (const auto &CM : Mod->ConfigMacros) {
2820 RecordData::value_type Record[] = {SUBMODULE_CONFIG_MACRO};
2821 Stream.EmitRecordWithBlob(ConfigMacroAbbrev, Record, CM);
2824 // Emit the initializers, if any.
2826 for (Decl *D : Context->getModuleInitializers(Mod))
2827 Inits.push_back(GetDeclRef(D));
2829 Stream.EmitRecord(SUBMODULE_INITIALIZERS, Inits);
2831 // Queue up the submodules of this module.
2832 for (auto *M : Mod->submodules())
2838 assert((NextSubmoduleID - FirstSubmoduleID ==
2839 getNumberOfModules(WritingModule)) &&
2840 "Wrong # of submodules; found a reference to a non-local, "
2841 "non-imported submodule?");
2844 void ASTWriter::WritePragmaDiagnosticMappings(const DiagnosticsEngine &Diag,
2846 llvm::SmallDenseMap<const DiagnosticsEngine::DiagState *, unsigned, 64>
2848 unsigned CurrID = 0;
2851 auto EncodeDiagStateFlags =
2852 [](const DiagnosticsEngine::DiagState *DS) -> unsigned {
2853 unsigned Result = (unsigned)DS->ExtBehavior;
2855 {(unsigned)DS->IgnoreAllWarnings, (unsigned)DS->EnableAllWarnings,
2856 (unsigned)DS->WarningsAsErrors, (unsigned)DS->ErrorsAsFatal,
2857 (unsigned)DS->SuppressSystemWarnings})
2858 Result = (Result << 1) | Val;
2862 unsigned Flags = EncodeDiagStateFlags(Diag.DiagStatesByLoc.FirstDiagState);
2863 Record.push_back(Flags);
2865 auto AddDiagState = [&](const DiagnosticsEngine::DiagState *State,
2866 bool IncludeNonPragmaStates) {
2867 // Ensure that the diagnostic state wasn't modified since it was created.
2868 // We will not correctly round-trip this information otherwise.
2869 assert(Flags == EncodeDiagStateFlags(State) &&
2870 "diag state flags vary in single AST file");
2872 unsigned &DiagStateID = DiagStateIDMap[State];
2873 Record.push_back(DiagStateID);
2875 if (DiagStateID == 0) {
2876 DiagStateID = ++CurrID;
2878 // Add a placeholder for the number of mappings.
2879 auto SizeIdx = Record.size();
2880 Record.emplace_back();
2881 for (const auto &I : *State) {
2882 if (I.second.isPragma() || IncludeNonPragmaStates) {
2883 Record.push_back(I.first);
2884 Record.push_back(I.second.serialize());
2887 // Update the placeholder.
2888 Record[SizeIdx] = (Record.size() - SizeIdx) / 2;
2892 AddDiagState(Diag.DiagStatesByLoc.FirstDiagState, isModule);
2894 // Reserve a spot for the number of locations with state transitions.
2895 auto NumLocationsIdx = Record.size();
2896 Record.emplace_back();
2898 // Emit the state transitions.
2899 unsigned NumLocations = 0;
2900 for (auto &FileIDAndFile : Diag.DiagStatesByLoc.Files) {
2901 if (!FileIDAndFile.first.isValid() ||
2902 !FileIDAndFile.second.HasLocalTransitions)
2905 AddSourceLocation(Diag.SourceMgr->getLocForStartOfFile(FileIDAndFile.first),
2907 Record.push_back(FileIDAndFile.second.StateTransitions.size());
2908 for (auto &StatePoint : FileIDAndFile.second.StateTransitions) {
2909 Record.push_back(StatePoint.Offset);
2910 AddDiagState(StatePoint.State, false);
2914 // Backpatch the number of locations.
2915 Record[NumLocationsIdx] = NumLocations;
2917 // Emit CurDiagStateLoc. Do it last in order to match source order.
2919 // This also protects against a hypothetical corner case with simulating
2920 // -Werror settings for implicit modules in the ASTReader, where reading
2921 // CurDiagState out of context could change whether warning pragmas are
2922 // treated as errors.
2923 AddSourceLocation(Diag.DiagStatesByLoc.CurDiagStateLoc, Record);
2924 AddDiagState(Diag.DiagStatesByLoc.CurDiagState, false);
2926 Stream.EmitRecord(DIAG_PRAGMA_MAPPINGS, Record);
2929 //===----------------------------------------------------------------------===//
2930 // Type Serialization
2931 //===----------------------------------------------------------------------===//
2933 /// \brief Write the representation of a type to the AST stream.
2934 void ASTWriter::WriteType(QualType T) {
2935 TypeIdx &IdxRef = TypeIdxs[T];
2936 if (IdxRef.getIndex() == 0) // we haven't seen this type before.
2937 IdxRef = TypeIdx(NextTypeID++);
2938 TypeIdx Idx = IdxRef;
2940 assert(Idx.getIndex() >= FirstTypeID && "Re-writing a type from a prior AST");
2944 // Emit the type's representation.
2945 ASTTypeWriter W(*this, Record);
2947 uint64_t Offset = W.Emit();
2949 // Record the offset for this type.
2950 unsigned Index = Idx.getIndex() - FirstTypeID;
2951 if (TypeOffsets.size() == Index)
2952 TypeOffsets.push_back(Offset);
2953 else if (TypeOffsets.size() < Index) {
2954 TypeOffsets.resize(Index + 1);
2955 TypeOffsets[Index] = Offset;
2957 llvm_unreachable("Types emitted in wrong order");
2961 //===----------------------------------------------------------------------===//
2962 // Declaration Serialization
2963 //===----------------------------------------------------------------------===//
2965 /// \brief Write the block containing all of the declaration IDs
2966 /// lexically declared within the given DeclContext.
2968 /// \returns the offset of the DECL_CONTEXT_LEXICAL block within the
2969 /// bistream, or 0 if no block was written.
2970 uint64_t ASTWriter::WriteDeclContextLexicalBlock(ASTContext &Context,
2972 if (DC->decls_empty())
2975 uint64_t Offset = Stream.GetCurrentBitNo();
2976 SmallVector<uint32_t, 128> KindDeclPairs;
2977 for (const auto *D : DC->decls()) {
2978 KindDeclPairs.push_back(D->getKind());
2979 KindDeclPairs.push_back(GetDeclRef(D));
2982 ++NumLexicalDeclContexts;
2983 RecordData::value_type Record[] = {DECL_CONTEXT_LEXICAL};
2984 Stream.EmitRecordWithBlob(DeclContextLexicalAbbrev, Record,
2985 bytes(KindDeclPairs));
2989 void ASTWriter::WriteTypeDeclOffsets() {
2990 using namespace llvm;
2992 // Write the type offsets array
2993 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2994 Abbrev->Add(BitCodeAbbrevOp(TYPE_OFFSET));
2995 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of types
2996 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base type index
2997 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // types block
2998 unsigned TypeOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3000 RecordData::value_type Record[] = {TYPE_OFFSET, TypeOffsets.size(),
3001 FirstTypeID - NUM_PREDEF_TYPE_IDS};
3002 Stream.EmitRecordWithBlob(TypeOffsetAbbrev, Record, bytes(TypeOffsets));
3005 // Write the declaration offsets array
3006 Abbrev = std::make_shared<BitCodeAbbrev>();
3007 Abbrev->Add(BitCodeAbbrevOp(DECL_OFFSET));
3008 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of declarations
3009 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base decl ID
3010 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // declarations block
3011 unsigned DeclOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3013 RecordData::value_type Record[] = {DECL_OFFSET, DeclOffsets.size(),
3014 FirstDeclID - NUM_PREDEF_DECL_IDS};
3015 Stream.EmitRecordWithBlob(DeclOffsetAbbrev, Record, bytes(DeclOffsets));
3019 void ASTWriter::WriteFileDeclIDsMap() {
3020 using namespace llvm;
3022 SmallVector<std::pair<FileID, DeclIDInFileInfo *>, 64> SortedFileDeclIDs(
3023 FileDeclIDs.begin(), FileDeclIDs.end());
3024 std::sort(SortedFileDeclIDs.begin(), SortedFileDeclIDs.end(),
3025 llvm::less_first());
3027 // Join the vectors of DeclIDs from all files.
3028 SmallVector<DeclID, 256> FileGroupedDeclIDs;
3029 for (auto &FileDeclEntry : SortedFileDeclIDs) {
3030 DeclIDInFileInfo &Info = *FileDeclEntry.second;
3031 Info.FirstDeclIndex = FileGroupedDeclIDs.size();
3032 for (auto &LocDeclEntry : Info.DeclIDs)
3033 FileGroupedDeclIDs.push_back(LocDeclEntry.second);
3036 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3037 Abbrev->Add(BitCodeAbbrevOp(FILE_SORTED_DECLS));
3038 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3039 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3040 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
3041 RecordData::value_type Record[] = {FILE_SORTED_DECLS,
3042 FileGroupedDeclIDs.size()};
3043 Stream.EmitRecordWithBlob(AbbrevCode, Record, bytes(FileGroupedDeclIDs));
3046 void ASTWriter::WriteComments() {
3047 Stream.EnterSubblock(COMMENTS_BLOCK_ID, 3);
3048 ArrayRef<RawComment *> RawComments = Context->Comments.getComments();
3050 for (const auto *I : RawComments) {
3052 AddSourceRange(I->getSourceRange(), Record);
3053 Record.push_back(I->getKind());
3054 Record.push_back(I->isTrailingComment());
3055 Record.push_back(I->isAlmostTrailingComment());
3056 Stream.EmitRecord(COMMENTS_RAW_COMMENT, Record);
3061 //===----------------------------------------------------------------------===//
3062 // Global Method Pool and Selector Serialization
3063 //===----------------------------------------------------------------------===//
3067 // Trait used for the on-disk hash table used in the method pool.
3068 class ASTMethodPoolTrait {
3072 typedef Selector key_type;
3073 typedef key_type key_type_ref;
3077 ObjCMethodList Instance, Factory;
3079 typedef const data_type& data_type_ref;
3081 typedef unsigned hash_value_type;
3082 typedef unsigned offset_type;
3084 explicit ASTMethodPoolTrait(ASTWriter &Writer) : Writer(Writer) { }
3086 static hash_value_type ComputeHash(Selector Sel) {
3087 return serialization::ComputeHash(Sel);
3090 std::pair<unsigned,unsigned>
3091 EmitKeyDataLength(raw_ostream& Out, Selector Sel,
3092 data_type_ref Methods) {
3093 using namespace llvm::support;
3094 endian::Writer<little> LE(Out);
3095 unsigned KeyLen = 2 + (Sel.getNumArgs()? Sel.getNumArgs() * 4 : 4);
3096 LE.write<uint16_t>(KeyLen);
3097 unsigned DataLen = 4 + 2 + 2; // 2 bytes for each of the method counts
3098 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3099 Method = Method->getNext())
3100 if (Method->getMethod())
3102 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3103 Method = Method->getNext())
3104 if (Method->getMethod())
3106 LE.write<uint16_t>(DataLen);
3107 return std::make_pair(KeyLen, DataLen);
3110 void EmitKey(raw_ostream& Out, Selector Sel, unsigned) {
3111 using namespace llvm::support;
3112 endian::Writer<little> LE(Out);
3113 uint64_t Start = Out.tell();
3114 assert((Start >> 32) == 0 && "Selector key offset too large");
3115 Writer.SetSelectorOffset(Sel, Start);
3116 unsigned N = Sel.getNumArgs();
3117 LE.write<uint16_t>(N);
3120 for (unsigned I = 0; I != N; ++I)
3122 Writer.getIdentifierRef(Sel.getIdentifierInfoForSlot(I)));
3125 void EmitData(raw_ostream& Out, key_type_ref,
3126 data_type_ref Methods, unsigned DataLen) {
3127 using namespace llvm::support;
3128 endian::Writer<little> LE(Out);
3129 uint64_t Start = Out.tell(); (void)Start;
3130 LE.write<uint32_t>(Methods.ID);
3131 unsigned NumInstanceMethods = 0;
3132 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3133 Method = Method->getNext())
3134 if (Method->getMethod())
3135 ++NumInstanceMethods;
3137 unsigned NumFactoryMethods = 0;
3138 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3139 Method = Method->getNext())
3140 if (Method->getMethod())
3141 ++NumFactoryMethods;
3143 unsigned InstanceBits = Methods.Instance.getBits();
3144 assert(InstanceBits < 4);
3145 unsigned InstanceHasMoreThanOneDeclBit =
3146 Methods.Instance.hasMoreThanOneDecl();
3147 unsigned FullInstanceBits = (NumInstanceMethods << 3) |
3148 (InstanceHasMoreThanOneDeclBit << 2) |
3150 unsigned FactoryBits = Methods.Factory.getBits();
3151 assert(FactoryBits < 4);
3152 unsigned FactoryHasMoreThanOneDeclBit =
3153 Methods.Factory.hasMoreThanOneDecl();
3154 unsigned FullFactoryBits = (NumFactoryMethods << 3) |
3155 (FactoryHasMoreThanOneDeclBit << 2) |
3157 LE.write<uint16_t>(FullInstanceBits);
3158 LE.write<uint16_t>(FullFactoryBits);
3159 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3160 Method = Method->getNext())
3161 if (Method->getMethod())
3162 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3163 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3164 Method = Method->getNext())
3165 if (Method->getMethod())
3166 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3168 assert(Out.tell() - Start == DataLen && "Data length is wrong");
3172 } // end anonymous namespace
3174 /// \brief Write ObjC data: selectors and the method pool.
3176 /// The method pool contains both instance and factory methods, stored
3177 /// in an on-disk hash table indexed by the selector. The hash table also
3178 /// contains an empty entry for every other selector known to Sema.
3179 void ASTWriter::WriteSelectors(Sema &SemaRef) {
3180 using namespace llvm;
3182 // Do we have to do anything at all?
3183 if (SemaRef.MethodPool.empty() && SelectorIDs.empty())
3185 unsigned NumTableEntries = 0;
3186 // Create and write out the blob that contains selectors and the method pool.
3188 llvm::OnDiskChainedHashTableGenerator<ASTMethodPoolTrait> Generator;
3189 ASTMethodPoolTrait Trait(*this);
3191 // Create the on-disk hash table representation. We walk through every
3192 // selector we've seen and look it up in the method pool.
3193 SelectorOffsets.resize(NextSelectorID - FirstSelectorID);
3194 for (auto &SelectorAndID : SelectorIDs) {
3195 Selector S = SelectorAndID.first;
3196 SelectorID ID = SelectorAndID.second;
3197 Sema::GlobalMethodPool::iterator F = SemaRef.MethodPool.find(S);
3198 ASTMethodPoolTrait::data_type Data = {
3203 if (F != SemaRef.MethodPool.end()) {
3204 Data.Instance = F->second.first;
3205 Data.Factory = F->second.second;
3207 // Only write this selector if it's not in an existing AST or something
3209 if (Chain && ID < FirstSelectorID) {
3210 // Selector already exists. Did it change?
3211 bool changed = false;
3212 for (ObjCMethodList *M = &Data.Instance;
3213 !changed && M && M->getMethod(); M = M->getNext()) {
3214 if (!M->getMethod()->isFromASTFile())
3217 for (ObjCMethodList *M = &Data.Factory; !changed && M && M->getMethod();
3219 if (!M->getMethod()->isFromASTFile())
3224 } else if (Data.Instance.getMethod() || Data.Factory.getMethod()) {
3225 // A new method pool entry.
3228 Generator.insert(S, Data, Trait);
3231 // Create the on-disk hash table in a buffer.
3232 SmallString<4096> MethodPool;
3233 uint32_t BucketOffset;
3235 using namespace llvm::support;
3236 ASTMethodPoolTrait Trait(*this);
3237 llvm::raw_svector_ostream Out(MethodPool);
3238 // Make sure that no bucket is at offset 0
3239 endian::Writer<little>(Out).write<uint32_t>(0);
3240 BucketOffset = Generator.Emit(Out, Trait);
3243 // Create a blob abbreviation
3244 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3245 Abbrev->Add(BitCodeAbbrevOp(METHOD_POOL));
3246 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3247 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3248 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3249 unsigned MethodPoolAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3251 // Write the method pool
3253 RecordData::value_type Record[] = {METHOD_POOL, BucketOffset,
3255 Stream.EmitRecordWithBlob(MethodPoolAbbrev, Record, MethodPool);
3258 // Create a blob abbreviation for the selector table offsets.
3259 Abbrev = std::make_shared<BitCodeAbbrev>();
3260 Abbrev->Add(BitCodeAbbrevOp(SELECTOR_OFFSETS));
3261 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size
3262 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3263 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3264 unsigned SelectorOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3266 // Write the selector offsets table.
3268 RecordData::value_type Record[] = {
3269 SELECTOR_OFFSETS, SelectorOffsets.size(),
3270 FirstSelectorID - NUM_PREDEF_SELECTOR_IDS};
3271 Stream.EmitRecordWithBlob(SelectorOffsetAbbrev, Record,
3272 bytes(SelectorOffsets));
3277 /// \brief Write the selectors referenced in @selector expression into AST file.
3278 void ASTWriter::WriteReferencedSelectorsPool(Sema &SemaRef) {
3279 using namespace llvm;
3280 if (SemaRef.ReferencedSelectors.empty())
3284 ASTRecordWriter Writer(*this, Record);
3286 // Note: this writes out all references even for a dependent AST. But it is
3287 // very tricky to fix, and given that @selector shouldn't really appear in
3288 // headers, probably not worth it. It's not a correctness issue.
3289 for (auto &SelectorAndLocation : SemaRef.ReferencedSelectors) {
3290 Selector Sel = SelectorAndLocation.first;
3291 SourceLocation Loc = SelectorAndLocation.second;
3292 Writer.AddSelectorRef(Sel);
3293 Writer.AddSourceLocation(Loc);
3295 Writer.Emit(REFERENCED_SELECTOR_POOL);
3298 //===----------------------------------------------------------------------===//
3299 // Identifier Table Serialization
3300 //===----------------------------------------------------------------------===//
3302 /// Determine the declaration that should be put into the name lookup table to
3303 /// represent the given declaration in this module. This is usually D itself,
3304 /// but if D was imported and merged into a local declaration, we want the most
3305 /// recent local declaration instead. The chosen declaration will be the most
3306 /// recent declaration in any module that imports this one.
3307 static NamedDecl *getDeclForLocalLookup(const LangOptions &LangOpts,
3309 if (!LangOpts.Modules || !D->isFromASTFile())
3312 if (Decl *Redecl = D->getPreviousDecl()) {
3313 // For Redeclarable decls, a prior declaration might be local.
3314 for (; Redecl; Redecl = Redecl->getPreviousDecl()) {
3315 // If we find a local decl, we're done.
3316 if (!Redecl->isFromASTFile()) {
3317 // Exception: in very rare cases (for injected-class-names), not all
3318 // redeclarations are in the same semantic context. Skip ones in a
3319 // different context. They don't go in this lookup table at all.
3320 if (!Redecl->getDeclContext()->getRedeclContext()->Equals(
3321 D->getDeclContext()->getRedeclContext()))
3323 return cast<NamedDecl>(Redecl);
3326 // If we find a decl from a (chained-)PCH stop since we won't find a
3328 if (Redecl->getOwningModuleID() == 0)
3331 } else if (Decl *First = D->getCanonicalDecl()) {
3332 // For Mergeable decls, the first decl might be local.
3333 if (!First->isFromASTFile())
3334 return cast<NamedDecl>(First);
3337 // All declarations are imported. Our most recent declaration will also be
3338 // the most recent one in anyone who imports us.
3344 class ASTIdentifierTableTrait {
3347 IdentifierResolver &IdResolver;
3350 ASTWriter::RecordData *InterestingIdentifierOffsets;
3352 /// \brief Determines whether this is an "interesting" identifier that needs a
3353 /// full IdentifierInfo structure written into the hash table. Notably, this
3354 /// doesn't check whether the name has macros defined; use PublicMacroIterator
3356 bool isInterestingIdentifier(const IdentifierInfo *II, uint64_t MacroOffset) {
3359 (IsModule ? II->hasRevertedBuiltin() : II->getObjCOrBuiltinID()) ||
3360 II->hasRevertedTokenIDToIdentifier() ||
3361 (NeedDecls && II->getFETokenInfo<void>()))
3368 typedef IdentifierInfo* key_type;
3369 typedef key_type key_type_ref;
3371 typedef IdentID data_type;
3372 typedef data_type data_type_ref;
3374 typedef unsigned hash_value_type;
3375 typedef unsigned offset_type;
3377 ASTIdentifierTableTrait(ASTWriter &Writer, Preprocessor &PP,
3378 IdentifierResolver &IdResolver, bool IsModule,
3379 ASTWriter::RecordData *InterestingIdentifierOffsets)
3380 : Writer(Writer), PP(PP), IdResolver(IdResolver), IsModule(IsModule),
3381 NeedDecls(!IsModule || !Writer.getLangOpts().CPlusPlus),
3382 InterestingIdentifierOffsets(InterestingIdentifierOffsets) {}
3384 bool needDecls() const { return NeedDecls; }
3386 static hash_value_type ComputeHash(const IdentifierInfo* II) {
3387 return llvm::HashString(II->getName());
3390 bool isInterestingIdentifier(const IdentifierInfo *II) {
3391 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3392 return isInterestingIdentifier(II, MacroOffset);
3395 bool isInterestingNonMacroIdentifier(const IdentifierInfo *II) {
3396 return isInterestingIdentifier(II, 0);
3399 std::pair<unsigned,unsigned>
3400 EmitKeyDataLength(raw_ostream& Out, IdentifierInfo* II, IdentID ID) {
3401 unsigned KeyLen = II->getLength() + 1;
3402 unsigned DataLen = 4; // 4 bytes for the persistent ID << 1
3403 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3404 if (isInterestingIdentifier(II, MacroOffset)) {
3405 DataLen += 2; // 2 bytes for builtin ID
3406 DataLen += 2; // 2 bytes for flags
3408 DataLen += 4; // MacroDirectives offset.
3411 for (IdentifierResolver::iterator D = IdResolver.begin(II),
3412 DEnd = IdResolver.end();
3417 using namespace llvm::support;
3418 endian::Writer<little> LE(Out);
3420 assert((uint16_t)DataLen == DataLen && (uint16_t)KeyLen == KeyLen);
3421 LE.write<uint16_t>(DataLen);
3422 // We emit the key length after the data length so that every
3423 // string is preceded by a 16-bit length. This matches the PTH
3424 // format for storing identifiers.
3425 LE.write<uint16_t>(KeyLen);
3426 return std::make_pair(KeyLen, DataLen);
3429 void EmitKey(raw_ostream& Out, const IdentifierInfo* II,
3431 // Record the location of the key data. This is used when generating
3432 // the mapping from persistent IDs to strings.
3433 Writer.SetIdentifierOffset(II, Out.tell());
3435 // Emit the offset of the key/data length information to the interesting
3436 // identifiers table if necessary.
3437 if (InterestingIdentifierOffsets && isInterestingIdentifier(II))
3438 InterestingIdentifierOffsets->push_back(Out.tell() - 4);
3440 Out.write(II->getNameStart(), KeyLen);
3443 void EmitData(raw_ostream& Out, IdentifierInfo* II,
3444 IdentID ID, unsigned) {
3445 using namespace llvm::support;
3446 endian::Writer<little> LE(Out);
3448 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3449 if (!isInterestingIdentifier(II, MacroOffset)) {
3450 LE.write<uint32_t>(ID << 1);
3454 LE.write<uint32_t>((ID << 1) | 0x01);
3455 uint32_t Bits = (uint32_t)II->getObjCOrBuiltinID();
3456 assert((Bits & 0xffff) == Bits && "ObjCOrBuiltinID too big for ASTReader.");
3457 LE.write<uint16_t>(Bits);
3459 bool HadMacroDefinition = MacroOffset != 0;
3460 Bits = (Bits << 1) | unsigned(HadMacroDefinition);
3461 Bits = (Bits << 1) | unsigned(II->isExtensionToken());
3462 Bits = (Bits << 1) | unsigned(II->isPoisoned());
3463 Bits = (Bits << 1) | unsigned(II->hasRevertedBuiltin());
3464 Bits = (Bits << 1) | unsigned(II->hasRevertedTokenIDToIdentifier());
3465 Bits = (Bits << 1) | unsigned(II->isCPlusPlusOperatorKeyword());
3466 LE.write<uint16_t>(Bits);
3468 if (HadMacroDefinition)
3469 LE.write<uint32_t>(MacroOffset);
3472 // Emit the declaration IDs in reverse order, because the
3473 // IdentifierResolver provides the declarations as they would be
3474 // visible (e.g., the function "stat" would come before the struct
3475 // "stat"), but the ASTReader adds declarations to the end of the list
3476 // (so we need to see the struct "stat" before the function "stat").
3477 // Only emit declarations that aren't from a chained PCH, though.
3478 SmallVector<NamedDecl *, 16> Decls(IdResolver.begin(II),
3480 for (SmallVectorImpl<NamedDecl *>::reverse_iterator D = Decls.rbegin(),
3481 DEnd = Decls.rend();
3484 Writer.getDeclID(getDeclForLocalLookup(PP.getLangOpts(), *D)));
3489 } // end anonymous namespace
3491 /// \brief Write the identifier table into the AST file.
3493 /// The identifier table consists of a blob containing string data
3494 /// (the actual identifiers themselves) and a separate "offsets" index
3495 /// that maps identifier IDs to locations within the blob.
3496 void ASTWriter::WriteIdentifierTable(Preprocessor &PP,
3497 IdentifierResolver &IdResolver,
3499 using namespace llvm;
3501 RecordData InterestingIdents;
3503 // Create and write out the blob that contains the identifier
3506 llvm::OnDiskChainedHashTableGenerator<ASTIdentifierTableTrait> Generator;
3507 ASTIdentifierTableTrait Trait(
3508 *this, PP, IdResolver, IsModule,
3509 (getLangOpts().CPlusPlus && IsModule) ? &InterestingIdents : nullptr);
3511 // Look for any identifiers that were named while processing the
3512 // headers, but are otherwise not needed. We add these to the hash
3513 // table to enable checking of the predefines buffer in the case
3514 // where the user adds new macro definitions when building the AST
3516 SmallVector<const IdentifierInfo *, 128> IIs;
3517 for (const auto &ID : PP.getIdentifierTable())
3518 IIs.push_back(ID.second);
3519 // Sort the identifiers lexicographically before getting them references so
3520 // that their order is stable.
3521 std::sort(IIs.begin(), IIs.end(), llvm::less_ptr<IdentifierInfo>());
3522 for (const IdentifierInfo *II : IIs)
3523 if (Trait.isInterestingNonMacroIdentifier(II))
3524 getIdentifierRef(II);
3526 // Create the on-disk hash table representation. We only store offsets
3527 // for identifiers that appear here for the first time.
3528 IdentifierOffsets.resize(NextIdentID - FirstIdentID);
3529 for (auto IdentIDPair : IdentifierIDs) {
3530 auto *II = const_cast<IdentifierInfo *>(IdentIDPair.first);
3531 IdentID ID = IdentIDPair.second;
3532 assert(II && "NULL identifier in identifier table");
3533 // Write out identifiers if either the ID is local or the identifier has
3534 // changed since it was loaded.
3535 if (ID >= FirstIdentID || !Chain || !II->isFromAST()
3536 || II->hasChangedSinceDeserialization() ||
3537 (Trait.needDecls() &&
3538 II->hasFETokenInfoChangedSinceDeserialization()))
3539 Generator.insert(II, ID, Trait);
3542 // Create the on-disk hash table in a buffer.
3543 SmallString<4096> IdentifierTable;
3544 uint32_t BucketOffset;
3546 using namespace llvm::support;
3547 llvm::raw_svector_ostream Out(IdentifierTable);
3548 // Make sure that no bucket is at offset 0
3549 endian::Writer<little>(Out).write<uint32_t>(0);
3550 BucketOffset = Generator.Emit(Out, Trait);
3553 // Create a blob abbreviation
3554 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3555 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_TABLE));
3556 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3557 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3558 unsigned IDTableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3560 // Write the identifier table
3561 RecordData::value_type Record[] = {IDENTIFIER_TABLE, BucketOffset};
3562 Stream.EmitRecordWithBlob(IDTableAbbrev, Record, IdentifierTable);
3565 // Write the offsets table for identifier IDs.
3566 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3567 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_OFFSET));
3568 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of identifiers
3569 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3570 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3571 unsigned IdentifierOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3574 for (unsigned I = 0, N = IdentifierOffsets.size(); I != N; ++I)
3575 assert(IdentifierOffsets[I] && "Missing identifier offset?");
3578 RecordData::value_type Record[] = {IDENTIFIER_OFFSET,
3579 IdentifierOffsets.size(),
3580 FirstIdentID - NUM_PREDEF_IDENT_IDS};
3581 Stream.EmitRecordWithBlob(IdentifierOffsetAbbrev, Record,
3582 bytes(IdentifierOffsets));
3584 // In C++, write the list of interesting identifiers (those that are
3585 // defined as macros, poisoned, or similar unusual things).
3586 if (!InterestingIdents.empty())
3587 Stream.EmitRecord(INTERESTING_IDENTIFIERS, InterestingIdents);
3590 //===----------------------------------------------------------------------===//
3591 // DeclContext's Name Lookup Table Serialization
3592 //===----------------------------------------------------------------------===//
3596 // Trait used for the on-disk hash table used in the method pool.
3597 class ASTDeclContextNameLookupTrait {
3599 llvm::SmallVector<DeclID, 64> DeclIDs;
3602 typedef DeclarationNameKey key_type;
3603 typedef key_type key_type_ref;
3605 /// A start and end index into DeclIDs, representing a sequence of decls.
3606 typedef std::pair<unsigned, unsigned> data_type;
3607 typedef const data_type& data_type_ref;
3609 typedef unsigned hash_value_type;
3610 typedef unsigned offset_type;
3612 explicit ASTDeclContextNameLookupTrait(ASTWriter &Writer) : Writer(Writer) { }
3614 template<typename Coll>
3615 data_type getData(const Coll &Decls) {
3616 unsigned Start = DeclIDs.size();
3617 for (NamedDecl *D : Decls) {
3619 Writer.GetDeclRef(getDeclForLocalLookup(Writer.getLangOpts(), D)));
3621 return std::make_pair(Start, DeclIDs.size());
3624 data_type ImportData(const reader::ASTDeclContextNameLookupTrait::data_type &FromReader) {
3625 unsigned Start = DeclIDs.size();
3626 for (auto ID : FromReader)
3627 DeclIDs.push_back(ID);
3628 return std::make_pair(Start, DeclIDs.size());
3631 static bool EqualKey(key_type_ref a, key_type_ref b) {
3635 hash_value_type ComputeHash(DeclarationNameKey Name) {
3636 return Name.getHash();
3639 void EmitFileRef(raw_ostream &Out, ModuleFile *F) const {
3640 assert(Writer.hasChain() &&
3641 "have reference to loaded module file but no chain?");
3643 using namespace llvm::support;
3644 endian::Writer<little>(Out)
3645 .write<uint32_t>(Writer.getChain()->getModuleFileID(F));
3648 std::pair<unsigned, unsigned> EmitKeyDataLength(raw_ostream &Out,
3649 DeclarationNameKey Name,
3650 data_type_ref Lookup) {
3651 using namespace llvm::support;
3652 endian::Writer<little> LE(Out);
3653 unsigned KeyLen = 1;
3654 switch (Name.getKind()) {
3655 case DeclarationName::Identifier:
3656 case DeclarationName::ObjCZeroArgSelector:
3657 case DeclarationName::ObjCOneArgSelector:
3658 case DeclarationName::ObjCMultiArgSelector:
3659 case DeclarationName::CXXLiteralOperatorName:
3660 case DeclarationName::CXXDeductionGuideName:
3663 case DeclarationName::CXXOperatorName:
3666 case DeclarationName::CXXConstructorName:
3667 case DeclarationName::CXXDestructorName:
3668 case DeclarationName::CXXConversionFunctionName:
3669 case DeclarationName::CXXUsingDirective:
3672 LE.write<uint16_t>(KeyLen);
3674 // 4 bytes for each DeclID.
3675 unsigned DataLen = 4 * (Lookup.second - Lookup.first);
3676 assert(uint16_t(DataLen) == DataLen &&
3677 "too many decls for serialized lookup result");
3678 LE.write<uint16_t>(DataLen);
3680 return std::make_pair(KeyLen, DataLen);
3683 void EmitKey(raw_ostream &Out, DeclarationNameKey Name, unsigned) {
3684 using namespace llvm::support;
3685 endian::Writer<little> LE(Out);
3686 LE.write<uint8_t>(Name.getKind());
3687 switch (Name.getKind()) {
3688 case DeclarationName::Identifier:
3689 case DeclarationName::CXXLiteralOperatorName:
3690 case DeclarationName::CXXDeductionGuideName:
3691 LE.write<uint32_t>(Writer.getIdentifierRef(Name.getIdentifier()));
3693 case DeclarationName::ObjCZeroArgSelector:
3694 case DeclarationName::ObjCOneArgSelector:
3695 case DeclarationName::ObjCMultiArgSelector:
3696 LE.write<uint32_t>(Writer.getSelectorRef(Name.getSelector()));
3698 case DeclarationName::CXXOperatorName:
3699 assert(Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS &&
3700 "Invalid operator?");
3701 LE.write<uint8_t>(Name.getOperatorKind());
3703 case DeclarationName::CXXConstructorName:
3704 case DeclarationName::CXXDestructorName:
3705 case DeclarationName::CXXConversionFunctionName:
3706 case DeclarationName::CXXUsingDirective:
3710 llvm_unreachable("Invalid name kind?");
3713 void EmitData(raw_ostream &Out, key_type_ref, data_type Lookup,
3715 using namespace llvm::support;
3716 endian::Writer<little> LE(Out);
3717 uint64_t Start = Out.tell(); (void)Start;
3718 for (unsigned I = Lookup.first, N = Lookup.second; I != N; ++I)
3719 LE.write<uint32_t>(DeclIDs[I]);
3720 assert(Out.tell() - Start == DataLen && "Data length is wrong");
3724 } // end anonymous namespace
3726 bool ASTWriter::isLookupResultExternal(StoredDeclsList &Result,
3728 return Result.hasExternalDecls() && DC->NeedToReconcileExternalVisibleStorage;
3731 bool ASTWriter::isLookupResultEntirelyExternal(StoredDeclsList &Result,
3733 for (auto *D : Result.getLookupResult())
3734 if (!getDeclForLocalLookup(getLangOpts(), D)->isFromASTFile())
3741 ASTWriter::GenerateNameLookupTable(const DeclContext *ConstDC,
3742 llvm::SmallVectorImpl<char> &LookupTable) {
3743 assert(!ConstDC->HasLazyLocalLexicalLookups &&
3744 !ConstDC->HasLazyExternalLexicalLookups &&
3745 "must call buildLookups first");
3747 // FIXME: We need to build the lookups table, which is logically const.
3748 auto *DC = const_cast<DeclContext*>(ConstDC);
3749 assert(DC == DC->getPrimaryContext() && "only primary DC has lookup table");
3751 // Create the on-disk hash table representation.
3752 MultiOnDiskHashTableGenerator<reader::ASTDeclContextNameLookupTrait,
3753 ASTDeclContextNameLookupTrait> Generator;
3754 ASTDeclContextNameLookupTrait Trait(*this);
3756 // The first step is to collect the declaration names which we need to
3757 // serialize into the name lookup table, and to collect them in a stable
3759 SmallVector<DeclarationName, 16> Names;
3761 // We also build up small sets of the constructor and conversion function
3762 // names which are visible.
3763 llvm::SmallSet<DeclarationName, 8> ConstructorNameSet, ConversionNameSet;
3765 for (auto &Lookup : *DC->buildLookup()) {
3766 auto &Name = Lookup.first;
3767 auto &Result = Lookup.second;
3769 // If there are no local declarations in our lookup result, we
3770 // don't need to write an entry for the name at all. If we can't
3771 // write out a lookup set without performing more deserialization,
3772 // just skip this entry.
3773 if (isLookupResultExternal(Result, DC) &&
3774 isLookupResultEntirelyExternal(Result, DC))
3777 // We also skip empty results. If any of the results could be external and
3778 // the currently available results are empty, then all of the results are
3779 // external and we skip it above. So the only way we get here with an empty
3780 // results is when no results could have been external *and* we have
3781 // external results.
3783 // FIXME: While we might want to start emitting on-disk entries for negative
3784 // lookups into a decl context as an optimization, today we *have* to skip
3785 // them because there are names with empty lookup results in decl contexts
3786 // which we can't emit in any stable ordering: we lookup constructors and
3787 // conversion functions in the enclosing namespace scope creating empty
3788 // results for them. This in almost certainly a bug in Clang's name lookup,
3789 // but that is likely to be hard or impossible to fix and so we tolerate it
3790 // here by omitting lookups with empty results.
3791 if (Lookup.second.getLookupResult().empty())
3794 switch (Lookup.first.getNameKind()) {
3796 Names.push_back(Lookup.first);
3799 case DeclarationName::CXXConstructorName:
3800 assert(isa<CXXRecordDecl>(DC) &&
3801 "Cannot have a constructor name outside of a class!");
3802 ConstructorNameSet.insert(Name);
3805 case DeclarationName::CXXConversionFunctionName:
3806 assert(isa<CXXRecordDecl>(DC) &&
3807 "Cannot have a conversion function name outside of a class!");
3808 ConversionNameSet.insert(Name);
3813 // Sort the names into a stable order.
3814 std::sort(Names.begin(), Names.end());
3816 if (auto *D = dyn_cast<CXXRecordDecl>(DC)) {
3817 // We need to establish an ordering of constructor and conversion function
3818 // names, and they don't have an intrinsic ordering.
3820 // First we try the easy case by forming the current context's constructor
3821 // name and adding that name first. This is a very useful optimization to
3822 // avoid walking the lexical declarations in many cases, and it also
3823 // handles the only case where a constructor name can come from some other
3824 // lexical context -- when that name is an implicit constructor merged from
3825 // another declaration in the redecl chain. Any non-implicit constructor or
3826 // conversion function which doesn't occur in all the lexical contexts
3827 // would be an ODR violation.
3828 auto ImplicitCtorName = Context->DeclarationNames.getCXXConstructorName(
3829 Context->getCanonicalType(Context->getRecordType(D)));
3830 if (ConstructorNameSet.erase(ImplicitCtorName))
3831 Names.push_back(ImplicitCtorName);
3833 // If we still have constructors or conversion functions, we walk all the
3834 // names in the decl and add the constructors and conversion functions
3835 // which are visible in the order they lexically occur within the context.
3836 if (!ConstructorNameSet.empty() || !ConversionNameSet.empty())
3837 for (Decl *ChildD : cast<CXXRecordDecl>(DC)->decls())
3838 if (auto *ChildND = dyn_cast<NamedDecl>(ChildD)) {
3839 auto Name = ChildND->getDeclName();
3840 switch (Name.getNameKind()) {
3844 case DeclarationName::CXXConstructorName:
3845 if (ConstructorNameSet.erase(Name))
3846 Names.push_back(Name);
3849 case DeclarationName::CXXConversionFunctionName:
3850 if (ConversionNameSet.erase(Name))
3851 Names.push_back(Name);
3855 if (ConstructorNameSet.empty() && ConversionNameSet.empty())
3859 assert(ConstructorNameSet.empty() && "Failed to find all of the visible "
3860 "constructors by walking all the "
3861 "lexical members of the context.");
3862 assert(ConversionNameSet.empty() && "Failed to find all of the visible "
3863 "conversion functions by walking all "
3864 "the lexical members of the context.");
3867 // Next we need to do a lookup with each name into this decl context to fully
3868 // populate any results from external sources. We don't actually use the
3869 // results of these lookups because we only want to use the results after all
3870 // results have been loaded and the pointers into them will be stable.
3871 for (auto &Name : Names)
3874 // Now we need to insert the results for each name into the hash table. For
3875 // constructor names and conversion function names, we actually need to merge
3876 // all of the results for them into one list of results each and insert
3878 SmallVector<NamedDecl *, 8> ConstructorDecls;
3879 SmallVector<NamedDecl *, 8> ConversionDecls;
3881 // Now loop over the names, either inserting them or appending for the two
3883 for (auto &Name : Names) {
3884 DeclContext::lookup_result Result = DC->noload_lookup(Name);
3886 switch (Name.getNameKind()) {
3888 Generator.insert(Name, Trait.getData(Result), Trait);
3891 case DeclarationName::CXXConstructorName:
3892 ConstructorDecls.append(Result.begin(), Result.end());
3895 case DeclarationName::CXXConversionFunctionName:
3896 ConversionDecls.append(Result.begin(), Result.end());
3901 // Handle our two special cases if we ended up having any. We arbitrarily use
3902 // the first declaration's name here because the name itself isn't part of
3903 // the key, only the kind of name is used.
3904 if (!ConstructorDecls.empty())
3905 Generator.insert(ConstructorDecls.front()->getDeclName(),
3906 Trait.getData(ConstructorDecls), Trait);
3907 if (!ConversionDecls.empty())
3908 Generator.insert(ConversionDecls.front()->getDeclName(),
3909 Trait.getData(ConversionDecls), Trait);
3911 // Create the on-disk hash table. Also emit the existing imported and
3912 // merged table if there is one.
3913 auto *Lookups = Chain ? Chain->getLoadedLookupTables(DC) : nullptr;
3914 Generator.emit(LookupTable, Trait, Lookups ? &Lookups->Table : nullptr);
3917 /// \brief Write the block containing all of the declaration IDs
3918 /// visible from the given DeclContext.
3920 /// \returns the offset of the DECL_CONTEXT_VISIBLE block within the
3921 /// bitstream, or 0 if no block was written.
3922 uint64_t ASTWriter::WriteDeclContextVisibleBlock(ASTContext &Context,
3924 // If we imported a key declaration of this namespace, write the visible
3925 // lookup results as an update record for it rather than including them
3926 // on this declaration. We will only look at key declarations on reload.
3927 if (isa<NamespaceDecl>(DC) && Chain &&
3928 Chain->getKeyDeclaration(cast<Decl>(DC))->isFromASTFile()) {
3929 // Only do this once, for the first local declaration of the namespace.
3930 for (auto *Prev = cast<NamespaceDecl>(DC)->getPreviousDecl(); Prev;
3931 Prev = Prev->getPreviousDecl())
3932 if (!Prev->isFromASTFile())
3935 // Note that we need to emit an update record for the primary context.
3936 UpdatedDeclContexts.insert(DC->getPrimaryContext());
3938 // Make sure all visible decls are written. They will be recorded later. We
3939 // do this using a side data structure so we can sort the names into
3940 // a deterministic order.
3941 StoredDeclsMap *Map = DC->getPrimaryContext()->buildLookup();
3942 SmallVector<std::pair<DeclarationName, DeclContext::lookup_result>, 16>
3945 LookupResults.reserve(Map->size());
3946 for (auto &Entry : *Map)
3947 LookupResults.push_back(
3948 std::make_pair(Entry.first, Entry.second.getLookupResult()));
3951 std::sort(LookupResults.begin(), LookupResults.end(), llvm::less_first());
3952 for (auto &NameAndResult : LookupResults) {
3953 DeclarationName Name = NameAndResult.first;
3954 DeclContext::lookup_result Result = NameAndResult.second;
3955 if (Name.getNameKind() == DeclarationName::CXXConstructorName ||
3956 Name.getNameKind() == DeclarationName::CXXConversionFunctionName) {
3957 // We have to work around a name lookup bug here where negative lookup
3958 // results for these names get cached in namespace lookup tables (these
3959 // names should never be looked up in a namespace).
3960 assert(Result.empty() && "Cannot have a constructor or conversion "
3961 "function name in a namespace!");
3965 for (NamedDecl *ND : Result)
3966 if (!ND->isFromASTFile())
3973 if (DC->getPrimaryContext() != DC)
3976 // Skip contexts which don't support name lookup.
3977 if (!DC->isLookupContext())
3980 // If not in C++, we perform name lookup for the translation unit via the
3981 // IdentifierInfo chains, don't bother to build a visible-declarations table.
3982 if (DC->isTranslationUnit() && !Context.getLangOpts().CPlusPlus)
3985 // Serialize the contents of the mapping used for lookup. Note that,
3986 // although we have two very different code paths, the serialized
3987 // representation is the same for both cases: a declaration name,
3988 // followed by a size, followed by references to the visible
3989 // declarations that have that name.
3990 uint64_t Offset = Stream.GetCurrentBitNo();
3991 StoredDeclsMap *Map = DC->buildLookup();
3992 if (!Map || Map->empty())
3995 // Create the on-disk hash table in a buffer.
3996 SmallString<4096> LookupTable;
3997 GenerateNameLookupTable(DC, LookupTable);
3999 // Write the lookup table
4000 RecordData::value_type Record[] = {DECL_CONTEXT_VISIBLE};
4001 Stream.EmitRecordWithBlob(DeclContextVisibleLookupAbbrev, Record,
4003 ++NumVisibleDeclContexts;
4007 /// \brief Write an UPDATE_VISIBLE block for the given context.
4009 /// UPDATE_VISIBLE blocks contain the declarations that are added to an existing
4010 /// DeclContext in a dependent AST file. As such, they only exist for the TU
4011 /// (in C++), for namespaces, and for classes with forward-declared unscoped
4012 /// enumeration members (in C++11).
4013 void ASTWriter::WriteDeclContextVisibleUpdate(const DeclContext *DC) {
4014 StoredDeclsMap *Map = DC->getLookupPtr();
4015 if (!Map || Map->empty())
4018 // Create the on-disk hash table in a buffer.
4019 SmallString<4096> LookupTable;
4020 GenerateNameLookupTable(DC, LookupTable);
4022 // If we're updating a namespace, select a key declaration as the key for the
4023 // update record; those are the only ones that will be checked on reload.
4024 if (isa<NamespaceDecl>(DC))
4025 DC = cast<DeclContext>(Chain->getKeyDeclaration(cast<Decl>(DC)));
4027 // Write the lookup table
4028 RecordData::value_type Record[] = {UPDATE_VISIBLE, getDeclID(cast<Decl>(DC))};
4029 Stream.EmitRecordWithBlob(UpdateVisibleAbbrev, Record, LookupTable);
4032 /// \brief Write an FP_PRAGMA_OPTIONS block for the given FPOptions.
4033 void ASTWriter::WriteFPPragmaOptions(const FPOptions &Opts) {
4034 RecordData::value_type Record[] = {Opts.getInt()};
4035 Stream.EmitRecord(FP_PRAGMA_OPTIONS, Record);
4038 /// \brief Write an OPENCL_EXTENSIONS block for the given OpenCLOptions.
4039 void ASTWriter::WriteOpenCLExtensions(Sema &SemaRef) {
4040 if (!SemaRef.Context.getLangOpts().OpenCL)
4043 const OpenCLOptions &Opts = SemaRef.getOpenCLOptions();
4045 for (const auto &I:Opts.OptMap) {
4046 AddString(I.getKey(), Record);
4047 auto V = I.getValue();
4048 Record.push_back(V.Supported ? 1 : 0);
4049 Record.push_back(V.Enabled ? 1 : 0);
4050 Record.push_back(V.Avail);
4051 Record.push_back(V.Core);
4053 Stream.EmitRecord(OPENCL_EXTENSIONS, Record);
4056 void ASTWriter::WriteOpenCLExtensionTypes(Sema &SemaRef) {
4057 if (!SemaRef.Context.getLangOpts().OpenCL)
4061 for (const auto &I : SemaRef.OpenCLTypeExtMap) {
4063 static_cast<unsigned>(getTypeID(I.first->getCanonicalTypeInternal())));
4064 Record.push_back(I.second.size());
4065 for (auto Ext : I.second)
4066 AddString(Ext, Record);
4068 Stream.EmitRecord(OPENCL_EXTENSION_TYPES, Record);
4071 void ASTWriter::WriteOpenCLExtensionDecls(Sema &SemaRef) {
4072 if (!SemaRef.Context.getLangOpts().OpenCL)
4076 for (const auto &I : SemaRef.OpenCLDeclExtMap) {
4077 Record.push_back(getDeclID(I.first));
4078 Record.push_back(static_cast<unsigned>(I.second.size()));
4079 for (auto Ext : I.second)
4080 AddString(Ext, Record);
4082 Stream.EmitRecord(OPENCL_EXTENSION_DECLS, Record);
4085 void ASTWriter::WriteCUDAPragmas(Sema &SemaRef) {
4086 if (SemaRef.ForceCUDAHostDeviceDepth > 0) {
4087 RecordData::value_type Record[] = {SemaRef.ForceCUDAHostDeviceDepth};
4088 Stream.EmitRecord(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH, Record);
4092 void ASTWriter::WriteObjCCategories() {
4093 SmallVector<ObjCCategoriesInfo, 2> CategoriesMap;
4094 RecordData Categories;
4096 for (unsigned I = 0, N = ObjCClassesWithCategories.size(); I != N; ++I) {
4098 unsigned StartIndex = Categories.size();
4100 ObjCInterfaceDecl *Class = ObjCClassesWithCategories[I];
4102 // Allocate space for the size.
4103 Categories.push_back(0);
4105 // Add the categories.
4106 for (ObjCInterfaceDecl::known_categories_iterator
4107 Cat = Class->known_categories_begin(),
4108 CatEnd = Class->known_categories_end();
4109 Cat != CatEnd; ++Cat, ++Size) {
4110 assert(getDeclID(*Cat) != 0 && "Bogus category");
4111 AddDeclRef(*Cat, Categories);
4115 Categories[StartIndex] = Size;
4117 // Record this interface -> category map.
4118 ObjCCategoriesInfo CatInfo = { getDeclID(Class), StartIndex };
4119 CategoriesMap.push_back(CatInfo);
4122 // Sort the categories map by the definition ID, since the reader will be
4123 // performing binary searches on this information.
4124 llvm::array_pod_sort(CategoriesMap.begin(), CategoriesMap.end());
4126 // Emit the categories map.
4127 using namespace llvm;
4129 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4130 Abbrev->Add(BitCodeAbbrevOp(OBJC_CATEGORIES_MAP));
4131 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # of entries
4132 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4133 unsigned AbbrevID = Stream.EmitAbbrev(std::move(Abbrev));
4135 RecordData::value_type Record[] = {OBJC_CATEGORIES_MAP, CategoriesMap.size()};
4136 Stream.EmitRecordWithBlob(AbbrevID, Record,
4137 reinterpret_cast<char *>(CategoriesMap.data()),
4138 CategoriesMap.size() * sizeof(ObjCCategoriesInfo));
4140 // Emit the category lists.
4141 Stream.EmitRecord(OBJC_CATEGORIES, Categories);
4144 void ASTWriter::WriteLateParsedTemplates(Sema &SemaRef) {
4145 Sema::LateParsedTemplateMapT &LPTMap = SemaRef.LateParsedTemplateMap;
4151 for (auto &LPTMapEntry : LPTMap) {
4152 const FunctionDecl *FD = LPTMapEntry.first;
4153 LateParsedTemplate &LPT = *LPTMapEntry.second;
4154 AddDeclRef(FD, Record);
4155 AddDeclRef(LPT.D, Record);
4156 Record.push_back(LPT.Toks.size());
4158 for (const auto &Tok : LPT.Toks) {
4159 AddToken(Tok, Record);
4162 Stream.EmitRecord(LATE_PARSED_TEMPLATE, Record);
4165 /// \brief Write the state of 'pragma clang optimize' at the end of the module.
4166 void ASTWriter::WriteOptimizePragmaOptions(Sema &SemaRef) {
4168 SourceLocation PragmaLoc = SemaRef.getOptimizeOffPragmaLocation();
4169 AddSourceLocation(PragmaLoc, Record);
4170 Stream.EmitRecord(OPTIMIZE_PRAGMA_OPTIONS, Record);
4173 /// \brief Write the state of 'pragma ms_struct' at the end of the module.
4174 void ASTWriter::WriteMSStructPragmaOptions(Sema &SemaRef) {
4176 Record.push_back(SemaRef.MSStructPragmaOn ? PMSST_ON : PMSST_OFF);
4177 Stream.EmitRecord(MSSTRUCT_PRAGMA_OPTIONS, Record);
4180 /// \brief Write the state of 'pragma pointers_to_members' at the end of the
4182 void ASTWriter::WriteMSPointersToMembersPragmaOptions(Sema &SemaRef) {
4184 Record.push_back(SemaRef.MSPointerToMemberRepresentationMethod);
4185 AddSourceLocation(SemaRef.ImplicitMSInheritanceAttrLoc, Record);
4186 Stream.EmitRecord(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS, Record);
4189 /// \brief Write the state of 'pragma pack' at the end of the module.
4190 void ASTWriter::WritePackPragmaOptions(Sema &SemaRef) {
4191 // Don't serialize pragma pack state for modules, since it should only take
4192 // effect on a per-submodule basis.
4197 Record.push_back(SemaRef.PackStack.CurrentValue);
4198 AddSourceLocation(SemaRef.PackStack.CurrentPragmaLocation, Record);
4199 Record.push_back(SemaRef.PackStack.Stack.size());
4200 for (const auto &StackEntry : SemaRef.PackStack.Stack) {
4201 Record.push_back(StackEntry.Value);
4202 AddSourceLocation(StackEntry.PragmaLocation, Record);
4203 AddString(StackEntry.StackSlotLabel, Record);
4205 Stream.EmitRecord(PACK_PRAGMA_OPTIONS, Record);
4208 void ASTWriter::WriteModuleFileExtension(Sema &SemaRef,
4209 ModuleFileExtensionWriter &Writer) {
4210 // Enter the extension block.
4211 Stream.EnterSubblock(EXTENSION_BLOCK_ID, 4);
4213 // Emit the metadata record abbreviation.
4214 auto Abv = std::make_shared<llvm::BitCodeAbbrev>();
4215 Abv->Add(llvm::BitCodeAbbrevOp(EXTENSION_METADATA));
4216 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4217 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4218 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4219 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4220 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4221 unsigned Abbrev = Stream.EmitAbbrev(std::move(Abv));
4223 // Emit the metadata record.
4225 auto Metadata = Writer.getExtension()->getExtensionMetadata();
4226 Record.push_back(EXTENSION_METADATA);
4227 Record.push_back(Metadata.MajorVersion);
4228 Record.push_back(Metadata.MinorVersion);
4229 Record.push_back(Metadata.BlockName.size());
4230 Record.push_back(Metadata.UserInfo.size());
4231 SmallString<64> Buffer;
4232 Buffer += Metadata.BlockName;
4233 Buffer += Metadata.UserInfo;
4234 Stream.EmitRecordWithBlob(Abbrev, Record, Buffer);
4236 // Emit the contents of the extension block.
4237 Writer.writeExtensionContents(SemaRef, Stream);
4239 // Exit the extension block.
4243 //===----------------------------------------------------------------------===//
4244 // General Serialization Routines
4245 //===----------------------------------------------------------------------===//
4247 /// \brief Emit the list of attributes to the specified record.
4248 void ASTRecordWriter::AddAttributes(ArrayRef<const Attr *> Attrs) {
4249 auto &Record = *this;
4250 Record.push_back(Attrs.size());
4251 for (const auto *A : Attrs) {
4252 Record.push_back(A->getKind()); // FIXME: stable encoding, target attrs
4253 Record.AddSourceRange(A->getRange());
4255 #include "clang/Serialization/AttrPCHWrite.inc"
4260 void ASTWriter::AddToken(const Token &Tok, RecordDataImpl &Record) {
4261 AddSourceLocation(Tok.getLocation(), Record);
4262 Record.push_back(Tok.getLength());
4264 // FIXME: When reading literal tokens, reconstruct the literal pointer
4266 AddIdentifierRef(Tok.getIdentifierInfo(), Record);
4267 // FIXME: Should translate token kind to a stable encoding.
4268 Record.push_back(Tok.getKind());
4269 // FIXME: Should translate token flags to a stable encoding.
4270 Record.push_back(Tok.getFlags());
4273 void ASTWriter::AddString(StringRef Str, RecordDataImpl &Record) {
4274 Record.push_back(Str.size());
4275 Record.insert(Record.end(), Str.begin(), Str.end());
4278 bool ASTWriter::PreparePathForOutput(SmallVectorImpl<char> &Path) {
4279 assert(Context && "should have context when outputting path");
4282 cleanPathForOutput(Context->getSourceManager().getFileManager(), Path);
4284 // Remove a prefix to make the path relative, if relevant.
4285 const char *PathBegin = Path.data();
4286 const char *PathPtr =
4287 adjustFilenameForRelocatableAST(PathBegin, BaseDirectory);
4288 if (PathPtr != PathBegin) {
4289 Path.erase(Path.begin(), Path.begin() + (PathPtr - PathBegin));
4296 void ASTWriter::AddPath(StringRef Path, RecordDataImpl &Record) {
4297 SmallString<128> FilePath(Path);
4298 PreparePathForOutput(FilePath);
4299 AddString(FilePath, Record);
4302 void ASTWriter::EmitRecordWithPath(unsigned Abbrev, RecordDataRef Record,
4304 SmallString<128> FilePath(Path);
4305 PreparePathForOutput(FilePath);
4306 Stream.EmitRecordWithBlob(Abbrev, Record, FilePath);
4309 void ASTWriter::AddVersionTuple(const VersionTuple &Version,
4310 RecordDataImpl &Record) {
4311 Record.push_back(Version.getMajor());
4312 if (Optional<unsigned> Minor = Version.getMinor())
4313 Record.push_back(*Minor + 1);
4315 Record.push_back(0);
4316 if (Optional<unsigned> Subminor = Version.getSubminor())
4317 Record.push_back(*Subminor + 1);
4319 Record.push_back(0);
4322 /// \brief Note that the identifier II occurs at the given offset
4323 /// within the identifier table.
4324 void ASTWriter::SetIdentifierOffset(const IdentifierInfo *II, uint32_t Offset) {
4325 IdentID ID = IdentifierIDs[II];
4326 // Only store offsets new to this AST file. Other identifier names are looked
4327 // up earlier in the chain and thus don't need an offset.
4328 if (ID >= FirstIdentID)
4329 IdentifierOffsets[ID - FirstIdentID] = Offset;
4332 /// \brief Note that the selector Sel occurs at the given offset
4333 /// within the method pool/selector table.
4334 void ASTWriter::SetSelectorOffset(Selector Sel, uint32_t Offset) {
4335 unsigned ID = SelectorIDs[Sel];
4336 assert(ID && "Unknown selector");
4337 // Don't record offsets for selectors that are also available in a different
4339 if (ID < FirstSelectorID)
4341 SelectorOffsets[ID - FirstSelectorID] = Offset;
4344 ASTWriter::ASTWriter(llvm::BitstreamWriter &Stream,
4345 SmallVectorImpl<char> &Buffer, MemoryBufferCache &PCMCache,
4346 ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions,
4347 bool IncludeTimestamps)
4348 : Stream(Stream), Buffer(Buffer), PCMCache(PCMCache),
4349 IncludeTimestamps(IncludeTimestamps) {
4350 for (const auto &Ext : Extensions) {
4351 if (auto Writer = Ext->createExtensionWriter(*this))
4352 ModuleFileExtensionWriters.push_back(std::move(Writer));
4356 ASTWriter::~ASTWriter() {
4357 llvm::DeleteContainerSeconds(FileDeclIDs);
4360 const LangOptions &ASTWriter::getLangOpts() const {
4361 assert(WritingAST && "can't determine lang opts when not writing AST");
4362 return Context->getLangOpts();
4365 time_t ASTWriter::getTimestampForOutput(const FileEntry *E) const {
4366 return IncludeTimestamps ? E->getModificationTime() : 0;
4369 ASTFileSignature ASTWriter::WriteAST(Sema &SemaRef,
4370 const std::string &OutputFile,
4371 Module *WritingModule, StringRef isysroot,
4375 ASTHasCompilerErrors = hasErrors;
4377 // Emit the file header.
4378 Stream.Emit((unsigned)'C', 8);
4379 Stream.Emit((unsigned)'P', 8);
4380 Stream.Emit((unsigned)'C', 8);
4381 Stream.Emit((unsigned)'H', 8);
4383 WriteBlockInfoBlock();
4385 Context = &SemaRef.Context;
4387 this->WritingModule = WritingModule;
4388 ASTFileSignature Signature =
4389 WriteASTCore(SemaRef, isysroot, OutputFile, WritingModule);
4392 this->WritingModule = nullptr;
4393 this->BaseDirectory.clear();
4396 if (SemaRef.Context.getLangOpts().ImplicitModules && WritingModule) {
4397 // Construct MemoryBuffer and update buffer manager.
4398 PCMCache.addBuffer(OutputFile,
4399 llvm::MemoryBuffer::getMemBufferCopy(
4400 StringRef(Buffer.begin(), Buffer.size())));
4405 template<typename Vector>
4406 static void AddLazyVectorDecls(ASTWriter &Writer, Vector &Vec,
4407 ASTWriter::RecordData &Record) {
4408 for (typename Vector::iterator I = Vec.begin(nullptr, true), E = Vec.end();
4410 Writer.AddDeclRef(*I, Record);
4414 ASTFileSignature ASTWriter::WriteASTCore(Sema &SemaRef, StringRef isysroot,
4415 const std::string &OutputFile,
4416 Module *WritingModule) {
4417 using namespace llvm;
4419 bool isModule = WritingModule != nullptr;
4421 // Make sure that the AST reader knows to finalize itself.
4423 Chain->finalizeForWriting();
4425 ASTContext &Context = SemaRef.Context;
4426 Preprocessor &PP = SemaRef.PP;
4428 // Set up predefined declaration IDs.
4429 auto RegisterPredefDecl = [&] (Decl *D, PredefinedDeclIDs ID) {
4431 assert(D->isCanonicalDecl() && "predefined decl is not canonical");
4435 RegisterPredefDecl(Context.getTranslationUnitDecl(),
4436 PREDEF_DECL_TRANSLATION_UNIT_ID);
4437 RegisterPredefDecl(Context.ObjCIdDecl, PREDEF_DECL_OBJC_ID_ID);
4438 RegisterPredefDecl(Context.ObjCSelDecl, PREDEF_DECL_OBJC_SEL_ID);
4439 RegisterPredefDecl(Context.ObjCClassDecl, PREDEF_DECL_OBJC_CLASS_ID);
4440 RegisterPredefDecl(Context.ObjCProtocolClassDecl,
4441 PREDEF_DECL_OBJC_PROTOCOL_ID);
4442 RegisterPredefDecl(Context.Int128Decl, PREDEF_DECL_INT_128_ID);
4443 RegisterPredefDecl(Context.UInt128Decl, PREDEF_DECL_UNSIGNED_INT_128_ID);
4444 RegisterPredefDecl(Context.ObjCInstanceTypeDecl,
4445 PREDEF_DECL_OBJC_INSTANCETYPE_ID);
4446 RegisterPredefDecl(Context.BuiltinVaListDecl, PREDEF_DECL_BUILTIN_VA_LIST_ID);
4447 RegisterPredefDecl(Context.VaListTagDecl, PREDEF_DECL_VA_LIST_TAG);
4448 RegisterPredefDecl(Context.BuiltinMSVaListDecl,
4449 PREDEF_DECL_BUILTIN_MS_VA_LIST_ID);
4450 RegisterPredefDecl(Context.ExternCContext, PREDEF_DECL_EXTERN_C_CONTEXT_ID);
4451 RegisterPredefDecl(Context.MakeIntegerSeqDecl,
4452 PREDEF_DECL_MAKE_INTEGER_SEQ_ID);
4453 RegisterPredefDecl(Context.CFConstantStringTypeDecl,
4454 PREDEF_DECL_CF_CONSTANT_STRING_ID);
4455 RegisterPredefDecl(Context.CFConstantStringTagDecl,
4456 PREDEF_DECL_CF_CONSTANT_STRING_TAG_ID);
4457 RegisterPredefDecl(Context.TypePackElementDecl,
4458 PREDEF_DECL_TYPE_PACK_ELEMENT_ID);
4460 // Build a record containing all of the tentative definitions in this file, in
4461 // TentativeDefinitions order. Generally, this record will be empty for
4463 RecordData TentativeDefinitions;
4464 AddLazyVectorDecls(*this, SemaRef.TentativeDefinitions, TentativeDefinitions);
4466 // Build a record containing all of the file scoped decls in this file.
4467 RecordData UnusedFileScopedDecls;
4469 AddLazyVectorDecls(*this, SemaRef.UnusedFileScopedDecls,
4470 UnusedFileScopedDecls);
4472 // Build a record containing all of the delegating constructors we still need
4474 RecordData DelegatingCtorDecls;
4476 AddLazyVectorDecls(*this, SemaRef.DelegatingCtorDecls, DelegatingCtorDecls);
4478 // Write the set of weak, undeclared identifiers. We always write the
4479 // entire table, since later PCH files in a PCH chain are only interested in
4480 // the results at the end of the chain.
4481 RecordData WeakUndeclaredIdentifiers;
4482 for (auto &WeakUndeclaredIdentifier : SemaRef.WeakUndeclaredIdentifiers) {
4483 IdentifierInfo *II = WeakUndeclaredIdentifier.first;
4484 WeakInfo &WI = WeakUndeclaredIdentifier.second;
4485 AddIdentifierRef(II, WeakUndeclaredIdentifiers);
4486 AddIdentifierRef(WI.getAlias(), WeakUndeclaredIdentifiers);
4487 AddSourceLocation(WI.getLocation(), WeakUndeclaredIdentifiers);
4488 WeakUndeclaredIdentifiers.push_back(WI.getUsed());
4491 // Build a record containing all of the ext_vector declarations.
4492 RecordData ExtVectorDecls;
4493 AddLazyVectorDecls(*this, SemaRef.ExtVectorDecls, ExtVectorDecls);
4495 // Build a record containing all of the VTable uses information.
4496 RecordData VTableUses;
4497 if (!SemaRef.VTableUses.empty()) {
4498 for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I) {
4499 AddDeclRef(SemaRef.VTableUses[I].first, VTableUses);
4500 AddSourceLocation(SemaRef.VTableUses[I].second, VTableUses);
4501 VTableUses.push_back(SemaRef.VTablesUsed[SemaRef.VTableUses[I].first]);
4505 // Build a record containing all of the UnusedLocalTypedefNameCandidates.
4506 RecordData UnusedLocalTypedefNameCandidates;
4507 for (const TypedefNameDecl *TD : SemaRef.UnusedLocalTypedefNameCandidates)
4508 AddDeclRef(TD, UnusedLocalTypedefNameCandidates);
4510 // Build a record containing all of pending implicit instantiations.
4511 RecordData PendingInstantiations;
4512 for (const auto &I : SemaRef.PendingInstantiations) {
4513 AddDeclRef(I.first, PendingInstantiations);
4514 AddSourceLocation(I.second, PendingInstantiations);
4516 assert(SemaRef.PendingLocalImplicitInstantiations.empty() &&
4517 "There are local ones at end of translation unit!");
4519 // Build a record containing some declaration references.
4520 RecordData SemaDeclRefs;
4521 if (SemaRef.StdNamespace || SemaRef.StdBadAlloc || SemaRef.StdAlignValT) {
4522 AddDeclRef(SemaRef.getStdNamespace(), SemaDeclRefs);
4523 AddDeclRef(SemaRef.getStdBadAlloc(), SemaDeclRefs);
4524 AddDeclRef(SemaRef.getStdAlignValT(), SemaDeclRefs);
4527 RecordData CUDASpecialDeclRefs;
4528 if (Context.getcudaConfigureCallDecl()) {
4529 AddDeclRef(Context.getcudaConfigureCallDecl(), CUDASpecialDeclRefs);
4532 // Build a record containing all of the known namespaces.
4533 RecordData KnownNamespaces;
4534 for (const auto &I : SemaRef.KnownNamespaces) {
4536 AddDeclRef(I.first, KnownNamespaces);
4539 // Build a record of all used, undefined objects that require definitions.
4540 RecordData UndefinedButUsed;
4542 SmallVector<std::pair<NamedDecl *, SourceLocation>, 16> Undefined;
4543 SemaRef.getUndefinedButUsed(Undefined);
4544 for (const auto &I : Undefined) {
4545 AddDeclRef(I.first, UndefinedButUsed);
4546 AddSourceLocation(I.second, UndefinedButUsed);
4549 // Build a record containing all delete-expressions that we would like to
4550 // analyze later in AST.
4551 RecordData DeleteExprsToAnalyze;
4553 for (const auto &DeleteExprsInfo :
4554 SemaRef.getMismatchingDeleteExpressions()) {
4555 AddDeclRef(DeleteExprsInfo.first, DeleteExprsToAnalyze);
4556 DeleteExprsToAnalyze.push_back(DeleteExprsInfo.second.size());
4557 for (const auto &DeleteLoc : DeleteExprsInfo.second) {
4558 AddSourceLocation(DeleteLoc.first, DeleteExprsToAnalyze);
4559 DeleteExprsToAnalyze.push_back(DeleteLoc.second);
4563 // Write the control block
4564 WriteControlBlock(PP, Context, isysroot, OutputFile);
4566 // Write the remaining AST contents.
4567 Stream.EnterSubblock(AST_BLOCK_ID, 5);
4569 // This is so that older clang versions, before the introduction
4570 // of the control block, can read and reject the newer PCH format.
4572 RecordData Record = {VERSION_MAJOR};
4573 Stream.EmitRecord(METADATA_OLD_FORMAT, Record);
4576 // Create a lexical update block containing all of the declarations in the
4577 // translation unit that do not come from other AST files.
4578 const TranslationUnitDecl *TU = Context.getTranslationUnitDecl();
4579 SmallVector<uint32_t, 128> NewGlobalKindDeclPairs;
4580 for (const auto *D : TU->noload_decls()) {
4581 if (!D->isFromASTFile()) {
4582 NewGlobalKindDeclPairs.push_back(D->getKind());
4583 NewGlobalKindDeclPairs.push_back(GetDeclRef(D));
4587 auto Abv = std::make_shared<BitCodeAbbrev>();
4588 Abv->Add(llvm::BitCodeAbbrevOp(TU_UPDATE_LEXICAL));
4589 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4590 unsigned TuUpdateLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv));
4592 RecordData::value_type Record[] = {TU_UPDATE_LEXICAL};
4593 Stream.EmitRecordWithBlob(TuUpdateLexicalAbbrev, Record,
4594 bytes(NewGlobalKindDeclPairs));
4597 // And a visible updates block for the translation unit.
4598 Abv = std::make_shared<BitCodeAbbrev>();
4599 Abv->Add(llvm::BitCodeAbbrevOp(UPDATE_VISIBLE));
4600 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4601 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4602 UpdateVisibleAbbrev = Stream.EmitAbbrev(std::move(Abv));
4603 WriteDeclContextVisibleUpdate(TU);
4605 // If we have any extern "C" names, write out a visible update for them.
4606 if (Context.ExternCContext)
4607 WriteDeclContextVisibleUpdate(Context.ExternCContext);
4609 // If the translation unit has an anonymous namespace, and we don't already
4610 // have an update block for it, write it as an update block.
4611 // FIXME: Why do we not do this if there's already an update block?
4612 if (NamespaceDecl *NS = TU->getAnonymousNamespace()) {
4613 ASTWriter::UpdateRecord &Record = DeclUpdates[TU];
4615 Record.push_back(DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, NS));
4618 // Add update records for all mangling numbers and static local numbers.
4619 // These aren't really update records, but this is a convenient way of
4620 // tagging this rare extra data onto the declarations.
4621 for (const auto &Number : Context.MangleNumbers)
4622 if (!Number.first->isFromASTFile())
4623 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_MANGLING_NUMBER,
4625 for (const auto &Number : Context.StaticLocalNumbers)
4626 if (!Number.first->isFromASTFile())
4627 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_STATIC_LOCAL_NUMBER,
4630 // Make sure visible decls, added to DeclContexts previously loaded from
4631 // an AST file, are registered for serialization. Likewise for template
4632 // specializations added to imported templates.
4633 for (const auto *I : DeclsToEmitEvenIfUnreferenced) {
4637 // Make sure all decls associated with an identifier are registered for
4638 // serialization, if we're storing decls with identifiers.
4639 if (!WritingModule || !getLangOpts().CPlusPlus) {
4640 llvm::SmallVector<const IdentifierInfo*, 256> IIs;
4641 for (const auto &ID : PP.getIdentifierTable()) {
4642 const IdentifierInfo *II = ID.second;
4643 if (!Chain || !II->isFromAST() || II->hasChangedSinceDeserialization())
4646 // Sort the identifiers to visit based on their name.
4647 std::sort(IIs.begin(), IIs.end(), llvm::less_ptr<IdentifierInfo>());
4648 for (const IdentifierInfo *II : IIs) {
4649 for (IdentifierResolver::iterator D = SemaRef.IdResolver.begin(II),
4650 DEnd = SemaRef.IdResolver.end();
4657 // For method pool in the module, if it contains an entry for a selector,
4658 // the entry should be complete, containing everything introduced by that
4659 // module and all modules it imports. It's possible that the entry is out of
4660 // date, so we need to pull in the new content here.
4662 // It's possible that updateOutOfDateSelector can update SelectorIDs. To be
4663 // safe, we copy all selectors out.
4664 llvm::SmallVector<Selector, 256> AllSelectors;
4665 for (auto &SelectorAndID : SelectorIDs)
4666 AllSelectors.push_back(SelectorAndID.first);
4667 for (auto &Selector : AllSelectors)
4668 SemaRef.updateOutOfDateSelector(Selector);
4670 // Form the record of special types.
4671 RecordData SpecialTypes;
4672 AddTypeRef(Context.getRawCFConstantStringType(), SpecialTypes);
4673 AddTypeRef(Context.getFILEType(), SpecialTypes);
4674 AddTypeRef(Context.getjmp_bufType(), SpecialTypes);
4675 AddTypeRef(Context.getsigjmp_bufType(), SpecialTypes);
4676 AddTypeRef(Context.ObjCIdRedefinitionType, SpecialTypes);
4677 AddTypeRef(Context.ObjCClassRedefinitionType, SpecialTypes);
4678 AddTypeRef(Context.ObjCSelRedefinitionType, SpecialTypes);
4679 AddTypeRef(Context.getucontext_tType(), SpecialTypes);
4682 // Write the mapping information describing our module dependencies and how
4683 // each of those modules were mapped into our own offset/ID space, so that
4684 // the reader can build the appropriate mapping to its own offset/ID space.
4685 // The map consists solely of a blob with the following format:
4686 // *(module-name-len:i16 module-name:len*i8
4687 // source-location-offset:i32
4688 // identifier-id:i32
4689 // preprocessed-entity-id:i32
4690 // macro-definition-id:i32
4693 // declaration-id:i32
4694 // c++-base-specifiers-id:i32
4697 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4698 Abbrev->Add(BitCodeAbbrevOp(MODULE_OFFSET_MAP));
4699 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4700 unsigned ModuleOffsetMapAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
4701 SmallString<2048> Buffer;
4703 llvm::raw_svector_ostream Out(Buffer);
4704 for (ModuleFile &M : Chain->ModuleMgr) {
4705 using namespace llvm::support;
4706 endian::Writer<little> LE(Out);
4707 StringRef FileName = M.FileName;
4708 LE.write<uint16_t>(FileName.size());
4709 Out.write(FileName.data(), FileName.size());
4711 // Note: if a base ID was uint max, it would not be possible to load
4712 // another module after it or have more than one entity inside it.
4713 uint32_t None = std::numeric_limits<uint32_t>::max();
4715 auto writeBaseIDOrNone = [&](uint32_t BaseID, bool ShouldWrite) {
4716 assert(BaseID < std::numeric_limits<uint32_t>::max() && "base id too high");
4718 LE.write<uint32_t>(BaseID);
4720 LE.write<uint32_t>(None);
4723 // These values should be unique within a chain, since they will be read
4724 // as keys into ContinuousRangeMaps.
4725 writeBaseIDOrNone(M.SLocEntryBaseOffset, M.LocalNumSLocEntries);
4726 writeBaseIDOrNone(M.BaseIdentifierID, M.LocalNumIdentifiers);
4727 writeBaseIDOrNone(M.BaseMacroID, M.LocalNumMacros);
4728 writeBaseIDOrNone(M.BasePreprocessedEntityID,
4729 M.NumPreprocessedEntities);
4730 writeBaseIDOrNone(M.BaseSubmoduleID, M.LocalNumSubmodules);
4731 writeBaseIDOrNone(M.BaseSelectorID, M.LocalNumSelectors);
4732 writeBaseIDOrNone(M.BaseDeclID, M.LocalNumDecls);
4733 writeBaseIDOrNone(M.BaseTypeIndex, M.LocalNumTypes);
4736 RecordData::value_type Record[] = {MODULE_OFFSET_MAP};
4737 Stream.EmitRecordWithBlob(ModuleOffsetMapAbbrev, Record,
4738 Buffer.data(), Buffer.size());
4741 RecordData DeclUpdatesOffsetsRecord;
4743 // Keep writing types, declarations, and declaration update records
4744 // until we've emitted all of them.
4745 Stream.EnterSubblock(DECLTYPES_BLOCK_ID, /*bits for abbreviations*/5);
4749 WriteDeclUpdatesBlocks(DeclUpdatesOffsetsRecord);
4750 while (!DeclTypesToEmit.empty()) {
4751 DeclOrType DOT = DeclTypesToEmit.front();
4752 DeclTypesToEmit.pop();
4754 WriteType(DOT.getType());
4756 WriteDecl(Context, DOT.getDecl());
4758 } while (!DeclUpdates.empty());
4761 DoneWritingDeclsAndTypes = true;
4763 // These things can only be done once we've written out decls and types.
4764 WriteTypeDeclOffsets();
4765 if (!DeclUpdatesOffsetsRecord.empty())
4766 Stream.EmitRecord(DECL_UPDATE_OFFSETS, DeclUpdatesOffsetsRecord);
4767 WriteFileDeclIDsMap();
4768 WriteSourceManagerBlock(Context.getSourceManager(), PP);
4770 WritePreprocessor(PP, isModule);
4771 WriteHeaderSearch(PP.getHeaderSearchInfo());
4772 WriteSelectors(SemaRef);
4773 WriteReferencedSelectorsPool(SemaRef);
4774 WriteLateParsedTemplates(SemaRef);
4775 WriteIdentifierTable(PP, SemaRef.IdResolver, isModule);
4776 WriteFPPragmaOptions(SemaRef.getFPOptions());
4777 WriteOpenCLExtensions(SemaRef);
4778 WriteOpenCLExtensionTypes(SemaRef);
4779 WriteOpenCLExtensionDecls(SemaRef);
4780 WriteCUDAPragmas(SemaRef);
4782 // If we're emitting a module, write out the submodule information.
4784 WriteSubmodules(WritingModule);
4786 Stream.EmitRecord(SPECIAL_TYPES, SpecialTypes);
4788 // Write the record containing external, unnamed definitions.
4789 if (!EagerlyDeserializedDecls.empty())
4790 Stream.EmitRecord(EAGERLY_DESERIALIZED_DECLS, EagerlyDeserializedDecls);
4792 if (!ModularCodegenDecls.empty())
4793 Stream.EmitRecord(MODULAR_CODEGEN_DECLS, ModularCodegenDecls);
4795 // Write the record containing tentative definitions.
4796 if (!TentativeDefinitions.empty())
4797 Stream.EmitRecord(TENTATIVE_DEFINITIONS, TentativeDefinitions);
4799 // Write the record containing unused file scoped decls.
4800 if (!UnusedFileScopedDecls.empty())
4801 Stream.EmitRecord(UNUSED_FILESCOPED_DECLS, UnusedFileScopedDecls);
4803 // Write the record containing weak undeclared identifiers.
4804 if (!WeakUndeclaredIdentifiers.empty())
4805 Stream.EmitRecord(WEAK_UNDECLARED_IDENTIFIERS,
4806 WeakUndeclaredIdentifiers);
4808 // Write the record containing ext_vector type names.
4809 if (!ExtVectorDecls.empty())
4810 Stream.EmitRecord(EXT_VECTOR_DECLS, ExtVectorDecls);
4812 // Write the record containing VTable uses information.
4813 if (!VTableUses.empty())
4814 Stream.EmitRecord(VTABLE_USES, VTableUses);
4816 // Write the record containing potentially unused local typedefs.
4817 if (!UnusedLocalTypedefNameCandidates.empty())
4818 Stream.EmitRecord(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES,
4819 UnusedLocalTypedefNameCandidates);
4821 // Write the record containing pending implicit instantiations.
4822 if (!PendingInstantiations.empty())
4823 Stream.EmitRecord(PENDING_IMPLICIT_INSTANTIATIONS, PendingInstantiations);
4825 // Write the record containing declaration references of Sema.
4826 if (!SemaDeclRefs.empty())
4827 Stream.EmitRecord(SEMA_DECL_REFS, SemaDeclRefs);
4829 // Write the record containing CUDA-specific declaration references.
4830 if (!CUDASpecialDeclRefs.empty())
4831 Stream.EmitRecord(CUDA_SPECIAL_DECL_REFS, CUDASpecialDeclRefs);
4833 // Write the delegating constructors.
4834 if (!DelegatingCtorDecls.empty())
4835 Stream.EmitRecord(DELEGATING_CTORS, DelegatingCtorDecls);
4837 // Write the known namespaces.
4838 if (!KnownNamespaces.empty())
4839 Stream.EmitRecord(KNOWN_NAMESPACES, KnownNamespaces);
4841 // Write the undefined internal functions and variables, and inline functions.
4842 if (!UndefinedButUsed.empty())
4843 Stream.EmitRecord(UNDEFINED_BUT_USED, UndefinedButUsed);
4845 if (!DeleteExprsToAnalyze.empty())
4846 Stream.EmitRecord(DELETE_EXPRS_TO_ANALYZE, DeleteExprsToAnalyze);
4848 // Write the visible updates to DeclContexts.
4849 for (auto *DC : UpdatedDeclContexts)
4850 WriteDeclContextVisibleUpdate(DC);
4852 if (!WritingModule) {
4853 // Write the submodules that were imported, if any.
4857 ModuleInfo(uint64_t ID, Module *M) : ID(ID), M(M) {}
4859 llvm::SmallVector<ModuleInfo, 64> Imports;
4860 for (const auto *I : Context.local_imports()) {
4861 assert(SubmoduleIDs.find(I->getImportedModule()) != SubmoduleIDs.end());
4862 Imports.push_back(ModuleInfo(SubmoduleIDs[I->getImportedModule()],
4863 I->getImportedModule()));
4866 if (!Imports.empty()) {
4867 auto Cmp = [](const ModuleInfo &A, const ModuleInfo &B) {
4870 auto Eq = [](const ModuleInfo &A, const ModuleInfo &B) {
4871 return A.ID == B.ID;
4874 // Sort and deduplicate module IDs.
4875 std::sort(Imports.begin(), Imports.end(), Cmp);
4876 Imports.erase(std::unique(Imports.begin(), Imports.end(), Eq),
4879 RecordData ImportedModules;
4880 for (const auto &Import : Imports) {
4881 ImportedModules.push_back(Import.ID);
4882 // FIXME: If the module has macros imported then later has declarations
4883 // imported, this location won't be the right one as a location for the
4884 // declaration imports.
4885 AddSourceLocation(PP.getModuleImportLoc(Import.M), ImportedModules);
4888 Stream.EmitRecord(IMPORTED_MODULES, ImportedModules);
4892 WriteObjCCategories();
4893 if(!WritingModule) {
4894 WriteOptimizePragmaOptions(SemaRef);
4895 WriteMSStructPragmaOptions(SemaRef);
4896 WriteMSPointersToMembersPragmaOptions(SemaRef);
4898 WritePackPragmaOptions(SemaRef);
4900 // Some simple statistics
4901 RecordData::value_type Record[] = {
4902 NumStatements, NumMacros, NumLexicalDeclContexts, NumVisibleDeclContexts};
4903 Stream.EmitRecord(STATISTICS, Record);
4906 // Write the module file extension blocks.
4907 for (const auto &ExtWriter : ModuleFileExtensionWriters)
4908 WriteModuleFileExtension(SemaRef, *ExtWriter);
4910 return writeUnhashedControlBlock(PP, Context);
4913 void ASTWriter::WriteDeclUpdatesBlocks(RecordDataImpl &OffsetsRecord) {
4914 if (DeclUpdates.empty())
4917 DeclUpdateMap LocalUpdates;
4918 LocalUpdates.swap(DeclUpdates);
4920 for (auto &DeclUpdate : LocalUpdates) {
4921 const Decl *D = DeclUpdate.first;
4923 bool HasUpdatedBody = false;
4924 RecordData RecordData;
4925 ASTRecordWriter Record(*this, RecordData);
4926 for (auto &Update : DeclUpdate.second) {
4927 DeclUpdateKind Kind = (DeclUpdateKind)Update.getKind();
4929 // An updated body is emitted last, so that the reader doesn't need
4930 // to skip over the lazy body to reach statements for other records.
4931 if (Kind == UPD_CXX_ADDED_FUNCTION_DEFINITION)
4932 HasUpdatedBody = true;
4934 Record.push_back(Kind);
4937 case UPD_CXX_ADDED_IMPLICIT_MEMBER:
4938 case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION:
4939 case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE:
4940 assert(Update.getDecl() && "no decl to add?");
4941 Record.push_back(GetDeclRef(Update.getDecl()));
4944 case UPD_CXX_ADDED_FUNCTION_DEFINITION:
4947 case UPD_CXX_INSTANTIATED_STATIC_DATA_MEMBER:
4948 Record.AddSourceLocation(Update.getLoc());
4951 case UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT:
4952 Record.AddStmt(const_cast<Expr *>(
4953 cast<ParmVarDecl>(Update.getDecl())->getDefaultArg()));
4956 case UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER:
4958 cast<FieldDecl>(Update.getDecl())->getInClassInitializer());
4961 case UPD_CXX_INSTANTIATED_CLASS_DEFINITION: {
4962 auto *RD = cast<CXXRecordDecl>(D);
4963 UpdatedDeclContexts.insert(RD->getPrimaryContext());
4964 Record.AddCXXDefinitionData(RD);
4965 Record.AddOffset(WriteDeclContextLexicalBlock(
4966 *Context, const_cast<CXXRecordDecl *>(RD)));
4968 // This state is sometimes updated by template instantiation, when we
4969 // switch from the specialization referring to the template declaration
4970 // to it referring to the template definition.
4971 if (auto *MSInfo = RD->getMemberSpecializationInfo()) {
4972 Record.push_back(MSInfo->getTemplateSpecializationKind());
4973 Record.AddSourceLocation(MSInfo->getPointOfInstantiation());
4975 auto *Spec = cast<ClassTemplateSpecializationDecl>(RD);
4976 Record.push_back(Spec->getTemplateSpecializationKind());
4977 Record.AddSourceLocation(Spec->getPointOfInstantiation());
4979 // The instantiation might have been resolved to a partial
4980 // specialization. If so, record which one.
4981 auto From = Spec->getInstantiatedFrom();
4982 if (auto PartialSpec =
4983 From.dyn_cast<ClassTemplatePartialSpecializationDecl*>()) {
4984 Record.push_back(true);
4985 Record.AddDeclRef(PartialSpec);
4986 Record.AddTemplateArgumentList(
4987 &Spec->getTemplateInstantiationArgs());
4989 Record.push_back(false);
4992 Record.push_back(RD->getTagKind());
4993 Record.AddSourceLocation(RD->getLocation());
4994 Record.AddSourceLocation(RD->getLocStart());
4995 Record.AddSourceRange(RD->getBraceRange());
4997 // Instantiation may change attributes; write them all out afresh.
4998 Record.push_back(D->hasAttrs());
5000 Record.AddAttributes(D->getAttrs());
5002 // FIXME: Ensure we don't get here for explicit instantiations.
5006 case UPD_CXX_RESOLVED_DTOR_DELETE:
5007 Record.AddDeclRef(Update.getDecl());
5010 case UPD_CXX_RESOLVED_EXCEPTION_SPEC:
5012 cast<FunctionDecl>(D)->getType()->castAs<FunctionProtoType>(),
5016 case UPD_CXX_DEDUCED_RETURN_TYPE:
5017 Record.push_back(GetOrCreateTypeID(Update.getType()));
5020 case UPD_DECL_MARKED_USED:
5023 case UPD_MANGLING_NUMBER:
5024 case UPD_STATIC_LOCAL_NUMBER:
5025 Record.push_back(Update.getNumber());
5028 case UPD_DECL_MARKED_OPENMP_THREADPRIVATE:
5029 Record.AddSourceRange(
5030 D->getAttr<OMPThreadPrivateDeclAttr>()->getRange());
5033 case UPD_DECL_MARKED_OPENMP_DECLARETARGET:
5034 Record.AddSourceRange(
5035 D->getAttr<OMPDeclareTargetDeclAttr>()->getRange());
5038 case UPD_DECL_EXPORTED:
5039 Record.push_back(getSubmoduleID(Update.getModule()));
5042 case UPD_ADDED_ATTR_TO_RECORD:
5043 Record.AddAttributes(llvm::makeArrayRef(Update.getAttr()));
5048 if (HasUpdatedBody) {
5049 const auto *Def = cast<FunctionDecl>(D);
5050 Record.push_back(UPD_CXX_ADDED_FUNCTION_DEFINITION);
5051 Record.push_back(Def->isInlined());
5052 Record.AddSourceLocation(Def->getInnerLocStart());
5053 Record.AddFunctionDefinition(Def);
5056 OffsetsRecord.push_back(GetDeclRef(D));
5057 OffsetsRecord.push_back(Record.Emit(DECL_UPDATES));
5061 void ASTWriter::AddSourceLocation(SourceLocation Loc, RecordDataImpl &Record) {
5062 uint32_t Raw = Loc.getRawEncoding();
5063 Record.push_back((Raw << 1) | (Raw >> 31));
5066 void ASTWriter::AddSourceRange(SourceRange Range, RecordDataImpl &Record) {
5067 AddSourceLocation(Range.getBegin(), Record);
5068 AddSourceLocation(Range.getEnd(), Record);
5071 void ASTRecordWriter::AddAPInt(const llvm::APInt &Value) {
5072 Record->push_back(Value.getBitWidth());
5073 const uint64_t *Words = Value.getRawData();
5074 Record->append(Words, Words + Value.getNumWords());
5077 void ASTRecordWriter::AddAPSInt(const llvm::APSInt &Value) {
5078 Record->push_back(Value.isUnsigned());
5082 void ASTRecordWriter::AddAPFloat(const llvm::APFloat &Value) {
5083 AddAPInt(Value.bitcastToAPInt());
5086 void ASTWriter::AddIdentifierRef(const IdentifierInfo *II, RecordDataImpl &Record) {
5087 Record.push_back(getIdentifierRef(II));
5090 IdentID ASTWriter::getIdentifierRef(const IdentifierInfo *II) {
5094 IdentID &ID = IdentifierIDs[II];
5100 MacroID ASTWriter::getMacroRef(MacroInfo *MI, const IdentifierInfo *Name) {
5101 // Don't emit builtin macros like __LINE__ to the AST file unless they
5102 // have been redefined by the header (in which case they are not
5104 if (!MI || MI->isBuiltinMacro())
5107 MacroID &ID = MacroIDs[MI];
5110 MacroInfoToEmitData Info = { Name, MI, ID };
5111 MacroInfosToEmit.push_back(Info);
5116 MacroID ASTWriter::getMacroID(MacroInfo *MI) {
5117 if (!MI || MI->isBuiltinMacro())
5120 assert(MacroIDs.find(MI) != MacroIDs.end() && "Macro not emitted!");
5121 return MacroIDs[MI];
5124 uint64_t ASTWriter::getMacroDirectivesOffset(const IdentifierInfo *Name) {
5125 return IdentMacroDirectivesOffsetMap.lookup(Name);
5128 void ASTRecordWriter::AddSelectorRef(const Selector SelRef) {
5129 Record->push_back(Writer->getSelectorRef(SelRef));
5132 SelectorID ASTWriter::getSelectorRef(Selector Sel) {
5133 if (Sel.getAsOpaquePtr() == nullptr) {
5137 SelectorID SID = SelectorIDs[Sel];
5138 if (SID == 0 && Chain) {
5139 // This might trigger a ReadSelector callback, which will set the ID for
5141 Chain->LoadSelector(Sel);
5142 SID = SelectorIDs[Sel];
5145 SID = NextSelectorID++;
5146 SelectorIDs[Sel] = SID;
5151 void ASTRecordWriter::AddCXXTemporary(const CXXTemporary *Temp) {
5152 AddDeclRef(Temp->getDestructor());
5155 void ASTRecordWriter::AddTemplateArgumentLocInfo(
5156 TemplateArgument::ArgKind Kind, const TemplateArgumentLocInfo &Arg) {
5158 case TemplateArgument::Expression:
5159 AddStmt(Arg.getAsExpr());
5161 case TemplateArgument::Type:
5162 AddTypeSourceInfo(Arg.getAsTypeSourceInfo());
5164 case TemplateArgument::Template:
5165 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5166 AddSourceLocation(Arg.getTemplateNameLoc());
5168 case TemplateArgument::TemplateExpansion:
5169 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5170 AddSourceLocation(Arg.getTemplateNameLoc());
5171 AddSourceLocation(Arg.getTemplateEllipsisLoc());
5173 case TemplateArgument::Null:
5174 case TemplateArgument::Integral:
5175 case TemplateArgument::Declaration:
5176 case TemplateArgument::NullPtr:
5177 case TemplateArgument::Pack:
5178 // FIXME: Is this right?
5183 void ASTRecordWriter::AddTemplateArgumentLoc(const TemplateArgumentLoc &Arg) {
5184 AddTemplateArgument(Arg.getArgument());
5186 if (Arg.getArgument().getKind() == TemplateArgument::Expression) {
5187 bool InfoHasSameExpr
5188 = Arg.getArgument().getAsExpr() == Arg.getLocInfo().getAsExpr();
5189 Record->push_back(InfoHasSameExpr);
5190 if (InfoHasSameExpr)
5191 return; // Avoid storing the same expr twice.
5193 AddTemplateArgumentLocInfo(Arg.getArgument().getKind(), Arg.getLocInfo());
5196 void ASTRecordWriter::AddTypeSourceInfo(TypeSourceInfo *TInfo) {
5198 AddTypeRef(QualType());
5202 AddTypeLoc(TInfo->getTypeLoc());
5205 void ASTRecordWriter::AddTypeLoc(TypeLoc TL) {
5206 AddTypeRef(TL.getType());
5208 TypeLocWriter TLW(*this);
5209 for (; !TL.isNull(); TL = TL.getNextTypeLoc())
5213 void ASTWriter::AddTypeRef(QualType T, RecordDataImpl &Record) {
5214 Record.push_back(GetOrCreateTypeID(T));
5217 TypeID ASTWriter::GetOrCreateTypeID(QualType T) {
5219 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5222 assert(!T.getLocalFastQualifiers());
5224 TypeIdx &Idx = TypeIdxs[T];
5225 if (Idx.getIndex() == 0) {
5226 if (DoneWritingDeclsAndTypes) {
5227 assert(0 && "New type seen after serializing all the types to emit!");
5231 // We haven't seen this type before. Assign it a new ID and put it
5232 // into the queue of types to emit.
5233 Idx = TypeIdx(NextTypeID++);
5234 DeclTypesToEmit.push(T);
5240 TypeID ASTWriter::getTypeID(QualType T) const {
5242 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5245 assert(!T.getLocalFastQualifiers());
5247 TypeIdxMap::const_iterator I = TypeIdxs.find(T);
5248 assert(I != TypeIdxs.end() && "Type not emitted!");
5253 void ASTWriter::AddDeclRef(const Decl *D, RecordDataImpl &Record) {
5254 Record.push_back(GetDeclRef(D));
5257 DeclID ASTWriter::GetDeclRef(const Decl *D) {
5258 assert(WritingAST && "Cannot request a declaration ID before AST writing");
5264 // If D comes from an AST file, its declaration ID is already known and
5266 if (D->isFromASTFile())
5267 return D->getGlobalID();
5269 assert(!(reinterpret_cast<uintptr_t>(D) & 0x01) && "Invalid decl pointer");
5270 DeclID &ID = DeclIDs[D];
5272 if (DoneWritingDeclsAndTypes) {
5273 assert(0 && "New decl seen after serializing all the decls to emit!");
5277 // We haven't seen this declaration before. Give it a new ID and
5278 // enqueue it in the list of declarations to emit.
5280 DeclTypesToEmit.push(const_cast<Decl *>(D));
5286 DeclID ASTWriter::getDeclID(const Decl *D) {
5290 // If D comes from an AST file, its declaration ID is already known and
5292 if (D->isFromASTFile())
5293 return D->getGlobalID();
5295 assert(DeclIDs.find(D) != DeclIDs.end() && "Declaration not emitted!");
5299 void ASTWriter::associateDeclWithFile(const Decl *D, DeclID ID) {
5303 SourceLocation Loc = D->getLocation();
5304 if (Loc.isInvalid())
5307 // We only keep track of the file-level declarations of each file.
5308 if (!D->getLexicalDeclContext()->isFileContext())
5310 // FIXME: ParmVarDecls that are part of a function type of a parameter of
5311 // a function/objc method, should not have TU as lexical context.
5312 if (isa<ParmVarDecl>(D))
5315 SourceManager &SM = Context->getSourceManager();
5316 SourceLocation FileLoc = SM.getFileLoc(Loc);
5317 assert(SM.isLocalSourceLocation(FileLoc));
5320 std::tie(FID, Offset) = SM.getDecomposedLoc(FileLoc);
5321 if (FID.isInvalid())
5323 assert(SM.getSLocEntry(FID).isFile());
5325 DeclIDInFileInfo *&Info = FileDeclIDs[FID];
5327 Info = new DeclIDInFileInfo();
5329 std::pair<unsigned, serialization::DeclID> LocDecl(Offset, ID);
5330 LocDeclIDsTy &Decls = Info->DeclIDs;
5332 if (Decls.empty() || Decls.back().first <= Offset) {
5333 Decls.push_back(LocDecl);
5337 LocDeclIDsTy::iterator I =
5338 std::upper_bound(Decls.begin(), Decls.end(), LocDecl, llvm::less_first());
5340 Decls.insert(I, LocDecl);
5343 void ASTRecordWriter::AddDeclarationName(DeclarationName Name) {
5344 // FIXME: Emit a stable enum for NameKind. 0 = Identifier etc.
5345 Record->push_back(Name.getNameKind());
5346 switch (Name.getNameKind()) {
5347 case DeclarationName::Identifier:
5348 AddIdentifierRef(Name.getAsIdentifierInfo());
5351 case DeclarationName::ObjCZeroArgSelector:
5352 case DeclarationName::ObjCOneArgSelector:
5353 case DeclarationName::ObjCMultiArgSelector:
5354 AddSelectorRef(Name.getObjCSelector());
5357 case DeclarationName::CXXConstructorName:
5358 case DeclarationName::CXXDestructorName:
5359 case DeclarationName::CXXConversionFunctionName:
5360 AddTypeRef(Name.getCXXNameType());
5363 case DeclarationName::CXXDeductionGuideName:
5364 AddDeclRef(Name.getCXXDeductionGuideTemplate());
5367 case DeclarationName::CXXOperatorName:
5368 Record->push_back(Name.getCXXOverloadedOperator());
5371 case DeclarationName::CXXLiteralOperatorName:
5372 AddIdentifierRef(Name.getCXXLiteralIdentifier());
5375 case DeclarationName::CXXUsingDirective:
5376 // No extra data to emit
5381 unsigned ASTWriter::getAnonymousDeclarationNumber(const NamedDecl *D) {
5382 assert(needsAnonymousDeclarationNumber(D) &&
5383 "expected an anonymous declaration");
5385 // Number the anonymous declarations within this context, if we've not
5387 auto It = AnonymousDeclarationNumbers.find(D);
5388 if (It == AnonymousDeclarationNumbers.end()) {
5389 auto *DC = D->getLexicalDeclContext();
5390 numberAnonymousDeclsWithin(DC, [&](const NamedDecl *ND, unsigned Number) {
5391 AnonymousDeclarationNumbers[ND] = Number;
5394 It = AnonymousDeclarationNumbers.find(D);
5395 assert(It != AnonymousDeclarationNumbers.end() &&
5396 "declaration not found within its lexical context");
5402 void ASTRecordWriter::AddDeclarationNameLoc(const DeclarationNameLoc &DNLoc,
5403 DeclarationName Name) {
5404 switch (Name.getNameKind()) {
5405 case DeclarationName::CXXConstructorName:
5406 case DeclarationName::CXXDestructorName:
5407 case DeclarationName::CXXConversionFunctionName:
5408 AddTypeSourceInfo(DNLoc.NamedType.TInfo);
5411 case DeclarationName::CXXOperatorName:
5412 AddSourceLocation(SourceLocation::getFromRawEncoding(
5413 DNLoc.CXXOperatorName.BeginOpNameLoc));
5415 SourceLocation::getFromRawEncoding(DNLoc.CXXOperatorName.EndOpNameLoc));
5418 case DeclarationName::CXXLiteralOperatorName:
5419 AddSourceLocation(SourceLocation::getFromRawEncoding(
5420 DNLoc.CXXLiteralOperatorName.OpNameLoc));
5423 case DeclarationName::Identifier:
5424 case DeclarationName::ObjCZeroArgSelector:
5425 case DeclarationName::ObjCOneArgSelector:
5426 case DeclarationName::ObjCMultiArgSelector:
5427 case DeclarationName::CXXUsingDirective:
5428 case DeclarationName::CXXDeductionGuideName:
5433 void ASTRecordWriter::AddDeclarationNameInfo(
5434 const DeclarationNameInfo &NameInfo) {
5435 AddDeclarationName(NameInfo.getName());
5436 AddSourceLocation(NameInfo.getLoc());
5437 AddDeclarationNameLoc(NameInfo.getInfo(), NameInfo.getName());
5440 void ASTRecordWriter::AddQualifierInfo(const QualifierInfo &Info) {
5441 AddNestedNameSpecifierLoc(Info.QualifierLoc);
5442 Record->push_back(Info.NumTemplParamLists);
5443 for (unsigned i = 0, e = Info.NumTemplParamLists; i != e; ++i)
5444 AddTemplateParameterList(Info.TemplParamLists[i]);
5447 void ASTRecordWriter::AddNestedNameSpecifier(NestedNameSpecifier *NNS) {
5448 // Nested name specifiers usually aren't too long. I think that 8 would
5449 // typically accommodate the vast majority.
5450 SmallVector<NestedNameSpecifier *, 8> NestedNames;
5452 // Push each of the NNS's onto a stack for serialization in reverse order.
5454 NestedNames.push_back(NNS);
5455 NNS = NNS->getPrefix();
5458 Record->push_back(NestedNames.size());
5459 while(!NestedNames.empty()) {
5460 NNS = NestedNames.pop_back_val();
5461 NestedNameSpecifier::SpecifierKind Kind = NNS->getKind();
5462 Record->push_back(Kind);
5464 case NestedNameSpecifier::Identifier:
5465 AddIdentifierRef(NNS->getAsIdentifier());
5468 case NestedNameSpecifier::Namespace:
5469 AddDeclRef(NNS->getAsNamespace());
5472 case NestedNameSpecifier::NamespaceAlias:
5473 AddDeclRef(NNS->getAsNamespaceAlias());
5476 case NestedNameSpecifier::TypeSpec:
5477 case NestedNameSpecifier::TypeSpecWithTemplate:
5478 AddTypeRef(QualType(NNS->getAsType(), 0));
5479 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5482 case NestedNameSpecifier::Global:
5483 // Don't need to write an associated value.
5486 case NestedNameSpecifier::Super:
5487 AddDeclRef(NNS->getAsRecordDecl());
5493 void ASTRecordWriter::AddNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS) {
5494 // Nested name specifiers usually aren't too long. I think that 8 would
5495 // typically accommodate the vast majority.
5496 SmallVector<NestedNameSpecifierLoc , 8> NestedNames;
5498 // Push each of the nested-name-specifiers's onto a stack for
5499 // serialization in reverse order.
5501 NestedNames.push_back(NNS);
5502 NNS = NNS.getPrefix();
5505 Record->push_back(NestedNames.size());
5506 while(!NestedNames.empty()) {
5507 NNS = NestedNames.pop_back_val();
5508 NestedNameSpecifier::SpecifierKind Kind
5509 = NNS.getNestedNameSpecifier()->getKind();
5510 Record->push_back(Kind);
5512 case NestedNameSpecifier::Identifier:
5513 AddIdentifierRef(NNS.getNestedNameSpecifier()->getAsIdentifier());
5514 AddSourceRange(NNS.getLocalSourceRange());
5517 case NestedNameSpecifier::Namespace:
5518 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespace());
5519 AddSourceRange(NNS.getLocalSourceRange());
5522 case NestedNameSpecifier::NamespaceAlias:
5523 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespaceAlias());
5524 AddSourceRange(NNS.getLocalSourceRange());
5527 case NestedNameSpecifier::TypeSpec:
5528 case NestedNameSpecifier::TypeSpecWithTemplate:
5529 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5530 AddTypeLoc(NNS.getTypeLoc());
5531 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5534 case NestedNameSpecifier::Global:
5535 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5538 case NestedNameSpecifier::Super:
5539 AddDeclRef(NNS.getNestedNameSpecifier()->getAsRecordDecl());
5540 AddSourceRange(NNS.getLocalSourceRange());
5546 void ASTRecordWriter::AddTemplateName(TemplateName Name) {
5547 TemplateName::NameKind Kind = Name.getKind();
5548 Record->push_back(Kind);
5550 case TemplateName::Template:
5551 AddDeclRef(Name.getAsTemplateDecl());
5554 case TemplateName::OverloadedTemplate: {
5555 OverloadedTemplateStorage *OvT = Name.getAsOverloadedTemplate();
5556 Record->push_back(OvT->size());
5557 for (const auto &I : *OvT)
5562 case TemplateName::QualifiedTemplate: {
5563 QualifiedTemplateName *QualT = Name.getAsQualifiedTemplateName();
5564 AddNestedNameSpecifier(QualT->getQualifier());
5565 Record->push_back(QualT->hasTemplateKeyword());
5566 AddDeclRef(QualT->getTemplateDecl());
5570 case TemplateName::DependentTemplate: {
5571 DependentTemplateName *DepT = Name.getAsDependentTemplateName();
5572 AddNestedNameSpecifier(DepT->getQualifier());
5573 Record->push_back(DepT->isIdentifier());
5574 if (DepT->isIdentifier())
5575 AddIdentifierRef(DepT->getIdentifier());
5577 Record->push_back(DepT->getOperator());
5581 case TemplateName::SubstTemplateTemplateParm: {
5582 SubstTemplateTemplateParmStorage *subst
5583 = Name.getAsSubstTemplateTemplateParm();
5584 AddDeclRef(subst->getParameter());
5585 AddTemplateName(subst->getReplacement());
5589 case TemplateName::SubstTemplateTemplateParmPack: {
5590 SubstTemplateTemplateParmPackStorage *SubstPack
5591 = Name.getAsSubstTemplateTemplateParmPack();
5592 AddDeclRef(SubstPack->getParameterPack());
5593 AddTemplateArgument(SubstPack->getArgumentPack());
5599 void ASTRecordWriter::AddTemplateArgument(const TemplateArgument &Arg) {
5600 Record->push_back(Arg.getKind());
5601 switch (Arg.getKind()) {
5602 case TemplateArgument::Null:
5604 case TemplateArgument::Type:
5605 AddTypeRef(Arg.getAsType());
5607 case TemplateArgument::Declaration:
5608 AddDeclRef(Arg.getAsDecl());
5609 AddTypeRef(Arg.getParamTypeForDecl());
5611 case TemplateArgument::NullPtr:
5612 AddTypeRef(Arg.getNullPtrType());
5614 case TemplateArgument::Integral:
5615 AddAPSInt(Arg.getAsIntegral());
5616 AddTypeRef(Arg.getIntegralType());
5618 case TemplateArgument::Template:
5619 AddTemplateName(Arg.getAsTemplateOrTemplatePattern());
5621 case TemplateArgument::TemplateExpansion:
5622 AddTemplateName(Arg.getAsTemplateOrTemplatePattern());
5623 if (Optional<unsigned> NumExpansions = Arg.getNumTemplateExpansions())
5624 Record->push_back(*NumExpansions + 1);
5626 Record->push_back(0);
5628 case TemplateArgument::Expression:
5629 AddStmt(Arg.getAsExpr());
5631 case TemplateArgument::Pack:
5632 Record->push_back(Arg.pack_size());
5633 for (const auto &P : Arg.pack_elements())
5634 AddTemplateArgument(P);
5639 void ASTRecordWriter::AddTemplateParameterList(
5640 const TemplateParameterList *TemplateParams) {
5641 assert(TemplateParams && "No TemplateParams!");
5642 AddSourceLocation(TemplateParams->getTemplateLoc());
5643 AddSourceLocation(TemplateParams->getLAngleLoc());
5644 AddSourceLocation(TemplateParams->getRAngleLoc());
5646 Record->push_back(TemplateParams->size());
5647 for (const auto &P : *TemplateParams)
5651 /// \brief Emit a template argument list.
5652 void ASTRecordWriter::AddTemplateArgumentList(
5653 const TemplateArgumentList *TemplateArgs) {
5654 assert(TemplateArgs && "No TemplateArgs!");
5655 Record->push_back(TemplateArgs->size());
5656 for (int i = 0, e = TemplateArgs->size(); i != e; ++i)
5657 AddTemplateArgument(TemplateArgs->get(i));
5660 void ASTRecordWriter::AddASTTemplateArgumentListInfo(
5661 const ASTTemplateArgumentListInfo *ASTTemplArgList) {
5662 assert(ASTTemplArgList && "No ASTTemplArgList!");
5663 AddSourceLocation(ASTTemplArgList->LAngleLoc);
5664 AddSourceLocation(ASTTemplArgList->RAngleLoc);
5665 Record->push_back(ASTTemplArgList->NumTemplateArgs);
5666 const TemplateArgumentLoc *TemplArgs = ASTTemplArgList->getTemplateArgs();
5667 for (int i = 0, e = ASTTemplArgList->NumTemplateArgs; i != e; ++i)
5668 AddTemplateArgumentLoc(TemplArgs[i]);
5671 void ASTRecordWriter::AddUnresolvedSet(const ASTUnresolvedSet &Set) {
5672 Record->push_back(Set.size());
5673 for (ASTUnresolvedSet::const_iterator
5674 I = Set.begin(), E = Set.end(); I != E; ++I) {
5675 AddDeclRef(I.getDecl());
5676 Record->push_back(I.getAccess());
5680 // FIXME: Move this out of the main ASTRecordWriter interface.
5681 void ASTRecordWriter::AddCXXBaseSpecifier(const CXXBaseSpecifier &Base) {
5682 Record->push_back(Base.isVirtual());
5683 Record->push_back(Base.isBaseOfClass());
5684 Record->push_back(Base.getAccessSpecifierAsWritten());
5685 Record->push_back(Base.getInheritConstructors());
5686 AddTypeSourceInfo(Base.getTypeSourceInfo());
5687 AddSourceRange(Base.getSourceRange());
5688 AddSourceLocation(Base.isPackExpansion()? Base.getEllipsisLoc()
5689 : SourceLocation());
5692 static uint64_t EmitCXXBaseSpecifiers(ASTWriter &W,
5693 ArrayRef<CXXBaseSpecifier> Bases) {
5694 ASTWriter::RecordData Record;
5695 ASTRecordWriter Writer(W, Record);
5696 Writer.push_back(Bases.size());
5698 for (auto &Base : Bases)
5699 Writer.AddCXXBaseSpecifier(Base);
5701 return Writer.Emit(serialization::DECL_CXX_BASE_SPECIFIERS);
5704 // FIXME: Move this out of the main ASTRecordWriter interface.
5705 void ASTRecordWriter::AddCXXBaseSpecifiers(ArrayRef<CXXBaseSpecifier> Bases) {
5706 AddOffset(EmitCXXBaseSpecifiers(*Writer, Bases));
5710 EmitCXXCtorInitializers(ASTWriter &W,
5711 ArrayRef<CXXCtorInitializer *> CtorInits) {
5712 ASTWriter::RecordData Record;
5713 ASTRecordWriter Writer(W, Record);
5714 Writer.push_back(CtorInits.size());
5716 for (auto *Init : CtorInits) {
5717 if (Init->isBaseInitializer()) {
5718 Writer.push_back(CTOR_INITIALIZER_BASE);
5719 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5720 Writer.push_back(Init->isBaseVirtual());
5721 } else if (Init->isDelegatingInitializer()) {
5722 Writer.push_back(CTOR_INITIALIZER_DELEGATING);
5723 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5724 } else if (Init->isMemberInitializer()){
5725 Writer.push_back(CTOR_INITIALIZER_MEMBER);
5726 Writer.AddDeclRef(Init->getMember());
5728 Writer.push_back(CTOR_INITIALIZER_INDIRECT_MEMBER);
5729 Writer.AddDeclRef(Init->getIndirectMember());
5732 Writer.AddSourceLocation(Init->getMemberLocation());
5733 Writer.AddStmt(Init->getInit());
5734 Writer.AddSourceLocation(Init->getLParenLoc());
5735 Writer.AddSourceLocation(Init->getRParenLoc());
5736 Writer.push_back(Init->isWritten());
5737 if (Init->isWritten())
5738 Writer.push_back(Init->getSourceOrder());
5741 return Writer.Emit(serialization::DECL_CXX_CTOR_INITIALIZERS);
5744 // FIXME: Move this out of the main ASTRecordWriter interface.
5745 void ASTRecordWriter::AddCXXCtorInitializers(
5746 ArrayRef<CXXCtorInitializer *> CtorInits) {
5747 AddOffset(EmitCXXCtorInitializers(*Writer, CtorInits));
5750 void ASTRecordWriter::AddCXXDefinitionData(const CXXRecordDecl *D) {
5751 auto &Data = D->data();
5752 Record->push_back(Data.IsLambda);
5753 Record->push_back(Data.UserDeclaredConstructor);
5754 Record->push_back(Data.UserDeclaredSpecialMembers);
5755 Record->push_back(Data.Aggregate);
5756 Record->push_back(Data.PlainOldData);
5757 Record->push_back(Data.Empty);
5758 Record->push_back(Data.Polymorphic);
5759 Record->push_back(Data.Abstract);
5760 Record->push_back(Data.IsStandardLayout);
5761 Record->push_back(Data.HasNoNonEmptyBases);
5762 Record->push_back(Data.HasPrivateFields);
5763 Record->push_back(Data.HasProtectedFields);
5764 Record->push_back(Data.HasPublicFields);
5765 Record->push_back(Data.HasMutableFields);
5766 Record->push_back(Data.HasVariantMembers);
5767 Record->push_back(Data.HasOnlyCMembers);
5768 Record->push_back(Data.HasInClassInitializer);
5769 Record->push_back(Data.HasUninitializedReferenceMember);
5770 Record->push_back(Data.HasUninitializedFields);
5771 Record->push_back(Data.HasInheritedConstructor);
5772 Record->push_back(Data.HasInheritedAssignment);
5773 Record->push_back(Data.NeedOverloadResolutionForMoveConstructor);
5774 Record->push_back(Data.NeedOverloadResolutionForMoveAssignment);
5775 Record->push_back(Data.NeedOverloadResolutionForDestructor);
5776 Record->push_back(Data.DefaultedMoveConstructorIsDeleted);
5777 Record->push_back(Data.DefaultedMoveAssignmentIsDeleted);
5778 Record->push_back(Data.DefaultedDestructorIsDeleted);
5779 Record->push_back(Data.HasTrivialSpecialMembers);
5780 Record->push_back(Data.DeclaredNonTrivialSpecialMembers);
5781 Record->push_back(Data.HasIrrelevantDestructor);
5782 Record->push_back(Data.HasConstexprNonCopyMoveConstructor);
5783 Record->push_back(Data.HasDefaultedDefaultConstructor);
5784 Record->push_back(Data.DefaultedDefaultConstructorIsConstexpr);
5785 Record->push_back(Data.HasConstexprDefaultConstructor);
5786 Record->push_back(Data.HasNonLiteralTypeFieldsOrBases);
5787 Record->push_back(Data.ComputedVisibleConversions);
5788 Record->push_back(Data.UserProvidedDefaultConstructor);
5789 Record->push_back(Data.DeclaredSpecialMembers);
5790 Record->push_back(Data.ImplicitCopyConstructorCanHaveConstParamForVBase);
5791 Record->push_back(Data.ImplicitCopyConstructorCanHaveConstParamForNonVBase);
5792 Record->push_back(Data.ImplicitCopyAssignmentHasConstParam);
5793 Record->push_back(Data.HasDeclaredCopyConstructorWithConstParam);
5794 Record->push_back(Data.HasDeclaredCopyAssignmentWithConstParam);
5796 // getODRHash will compute the ODRHash if it has not been previously computed.
5797 Record->push_back(D->getODRHash());
5798 bool ModulesDebugInfo = Writer->Context->getLangOpts().ModulesDebugInfo &&
5799 Writer->WritingModule && !D->isDependentType();
5800 Record->push_back(ModulesDebugInfo);
5801 if (ModulesDebugInfo)
5802 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(D));
5804 // IsLambda bit is already saved.
5806 Record->push_back(Data.NumBases);
5807 if (Data.NumBases > 0)
5808 AddCXXBaseSpecifiers(Data.bases());
5810 // FIXME: Make VBases lazily computed when needed to avoid storing them.
5811 Record->push_back(Data.NumVBases);
5812 if (Data.NumVBases > 0)
5813 AddCXXBaseSpecifiers(Data.vbases());
5815 AddUnresolvedSet(Data.Conversions.get(*Writer->Context));
5816 AddUnresolvedSet(Data.VisibleConversions.get(*Writer->Context));
5817 // Data.Definition is the owning decl, no need to write it.
5818 AddDeclRef(D->getFirstFriend());
5820 // Add lambda-specific data.
5821 if (Data.IsLambda) {
5822 auto &Lambda = D->getLambdaData();
5823 Record->push_back(Lambda.Dependent);
5824 Record->push_back(Lambda.IsGenericLambda);
5825 Record->push_back(Lambda.CaptureDefault);
5826 Record->push_back(Lambda.NumCaptures);
5827 Record->push_back(Lambda.NumExplicitCaptures);
5828 Record->push_back(Lambda.ManglingNumber);
5829 AddDeclRef(D->getLambdaContextDecl());
5830 AddTypeSourceInfo(Lambda.MethodTyInfo);
5831 for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
5832 const LambdaCapture &Capture = Lambda.Captures[I];
5833 AddSourceLocation(Capture.getLocation());
5834 Record->push_back(Capture.isImplicit());
5835 Record->push_back(Capture.getCaptureKind());
5836 switch (Capture.getCaptureKind()) {
5844 Capture.capturesVariable() ? Capture.getCapturedVar() : nullptr;
5846 AddSourceLocation(Capture.isPackExpansion() ? Capture.getEllipsisLoc()
5847 : SourceLocation());
5854 void ASTWriter::ReaderInitialized(ASTReader *Reader) {
5855 assert(Reader && "Cannot remove chain");
5856 assert((!Chain || Chain == Reader) && "Cannot replace chain");
5857 assert(FirstDeclID == NextDeclID &&
5858 FirstTypeID == NextTypeID &&
5859 FirstIdentID == NextIdentID &&
5860 FirstMacroID == NextMacroID &&
5861 FirstSubmoduleID == NextSubmoduleID &&
5862 FirstSelectorID == NextSelectorID &&
5863 "Setting chain after writing has started.");
5867 // Note, this will get called multiple times, once one the reader starts up
5868 // and again each time it's done reading a PCH or module.
5869 FirstDeclID = NUM_PREDEF_DECL_IDS + Chain->getTotalNumDecls();
5870 FirstTypeID = NUM_PREDEF_TYPE_IDS + Chain->getTotalNumTypes();
5871 FirstIdentID = NUM_PREDEF_IDENT_IDS + Chain->getTotalNumIdentifiers();
5872 FirstMacroID = NUM_PREDEF_MACRO_IDS + Chain->getTotalNumMacros();
5873 FirstSubmoduleID = NUM_PREDEF_SUBMODULE_IDS + Chain->getTotalNumSubmodules();
5874 FirstSelectorID = NUM_PREDEF_SELECTOR_IDS + Chain->getTotalNumSelectors();
5875 NextDeclID = FirstDeclID;
5876 NextTypeID = FirstTypeID;
5877 NextIdentID = FirstIdentID;
5878 NextMacroID = FirstMacroID;
5879 NextSelectorID = FirstSelectorID;
5880 NextSubmoduleID = FirstSubmoduleID;
5883 void ASTWriter::IdentifierRead(IdentID ID, IdentifierInfo *II) {
5884 // Always keep the highest ID. See \p TypeRead() for more information.
5885 IdentID &StoredID = IdentifierIDs[II];
5890 void ASTWriter::MacroRead(serialization::MacroID ID, MacroInfo *MI) {
5891 // Always keep the highest ID. See \p TypeRead() for more information.
5892 MacroID &StoredID = MacroIDs[MI];
5897 void ASTWriter::TypeRead(TypeIdx Idx, QualType T) {
5898 // Always take the highest-numbered type index. This copes with an interesting
5899 // case for chained AST writing where we schedule writing the type and then,
5900 // later, deserialize the type from another AST. In this case, we want to
5901 // keep the higher-numbered entry so that we can properly write it out to
5903 TypeIdx &StoredIdx = TypeIdxs[T];
5904 if (Idx.getIndex() >= StoredIdx.getIndex())
5908 void ASTWriter::SelectorRead(SelectorID ID, Selector S) {
5909 // Always keep the highest ID. See \p TypeRead() for more information.
5910 SelectorID &StoredID = SelectorIDs[S];
5915 void ASTWriter::MacroDefinitionRead(serialization::PreprocessedEntityID ID,
5916 MacroDefinitionRecord *MD) {
5917 assert(MacroDefinitions.find(MD) == MacroDefinitions.end());
5918 MacroDefinitions[MD] = ID;
5921 void ASTWriter::ModuleRead(serialization::SubmoduleID ID, Module *Mod) {
5922 assert(SubmoduleIDs.find(Mod) == SubmoduleIDs.end());
5923 SubmoduleIDs[Mod] = ID;
5926 void ASTWriter::CompletedTagDefinition(const TagDecl *D) {
5927 if (Chain && Chain->isProcessingUpdateRecords()) return;
5928 assert(D->isCompleteDefinition());
5929 assert(!WritingAST && "Already writing the AST!");
5930 if (auto *RD = dyn_cast<CXXRecordDecl>(D)) {
5931 // We are interested when a PCH decl is modified.
5932 if (RD->isFromASTFile()) {
5933 // A forward reference was mutated into a definition. Rewrite it.
5934 // FIXME: This happens during template instantiation, should we
5935 // have created a new definition decl instead ?
5936 assert(isTemplateInstantiation(RD->getTemplateSpecializationKind()) &&
5937 "completed a tag from another module but not by instantiation?");
5938 DeclUpdates[RD].push_back(
5939 DeclUpdate(UPD_CXX_INSTANTIATED_CLASS_DEFINITION));
5944 static bool isImportedDeclContext(ASTReader *Chain, const Decl *D) {
5945 if (D->isFromASTFile())
5948 // The predefined __va_list_tag struct is imported if we imported any decls.
5949 // FIXME: This is a gross hack.
5950 return D == D->getASTContext().getVaListTagDecl();
5953 void ASTWriter::AddedVisibleDecl(const DeclContext *DC, const Decl *D) {
5954 if (Chain && Chain->isProcessingUpdateRecords()) return;
5955 assert(DC->isLookupContext() &&
5956 "Should not add lookup results to non-lookup contexts!");
5958 // TU is handled elsewhere.
5959 if (isa<TranslationUnitDecl>(DC))
5962 // Namespaces are handled elsewhere, except for template instantiations of
5963 // FunctionTemplateDecls in namespaces. We are interested in cases where the
5964 // local instantiations are added to an imported context. Only happens when
5965 // adding ADL lookup candidates, for example templated friends.
5966 if (isa<NamespaceDecl>(DC) && D->getFriendObjectKind() == Decl::FOK_None &&
5967 !isa<FunctionTemplateDecl>(D))
5970 // We're only interested in cases where a local declaration is added to an
5971 // imported context.
5972 if (D->isFromASTFile() || !isImportedDeclContext(Chain, cast<Decl>(DC)))
5975 assert(DC == DC->getPrimaryContext() && "added to non-primary context");
5976 assert(!getDefinitiveDeclContext(DC) && "DeclContext not definitive!");
5977 assert(!WritingAST && "Already writing the AST!");
5978 if (UpdatedDeclContexts.insert(DC) && !cast<Decl>(DC)->isFromASTFile()) {
5979 // We're adding a visible declaration to a predefined decl context. Ensure
5980 // that we write out all of its lookup results so we don't get a nasty
5981 // surprise when we try to emit its lookup table.
5982 for (auto *Child : DC->decls())
5983 DeclsToEmitEvenIfUnreferenced.push_back(Child);
5985 DeclsToEmitEvenIfUnreferenced.push_back(D);
5988 void ASTWriter::AddedCXXImplicitMember(const CXXRecordDecl *RD, const Decl *D) {
5989 if (Chain && Chain->isProcessingUpdateRecords()) return;
5990 assert(D->isImplicit());
5992 // We're only interested in cases where a local declaration is added to an
5993 // imported context.
5994 if (D->isFromASTFile() || !isImportedDeclContext(Chain, RD))
5997 if (!isa<CXXMethodDecl>(D))
6000 // A decl coming from PCH was modified.
6001 assert(RD->isCompleteDefinition());
6002 assert(!WritingAST && "Already writing the AST!");
6003 DeclUpdates[RD].push_back(DeclUpdate(UPD_CXX_ADDED_IMPLICIT_MEMBER, D));
6006 void ASTWriter::ResolvedExceptionSpec(const FunctionDecl *FD) {
6007 if (Chain && Chain->isProcessingUpdateRecords()) return;
6008 assert(!DoneWritingDeclsAndTypes && "Already done writing updates!");
6010 Chain->forEachImportedKeyDecl(FD, [&](const Decl *D) {
6011 // If we don't already know the exception specification for this redecl
6012 // chain, add an update record for it.
6013 if (isUnresolvedExceptionSpec(cast<FunctionDecl>(D)
6015 ->castAs<FunctionProtoType>()
6016 ->getExceptionSpecType()))
6017 DeclUpdates[D].push_back(UPD_CXX_RESOLVED_EXCEPTION_SPEC);
6021 void ASTWriter::DeducedReturnType(const FunctionDecl *FD, QualType ReturnType) {
6022 if (Chain && Chain->isProcessingUpdateRecords()) return;
6023 assert(!WritingAST && "Already writing the AST!");
6025 Chain->forEachImportedKeyDecl(FD, [&](const Decl *D) {
6026 DeclUpdates[D].push_back(
6027 DeclUpdate(UPD_CXX_DEDUCED_RETURN_TYPE, ReturnType));
6031 void ASTWriter::ResolvedOperatorDelete(const CXXDestructorDecl *DD,
6032 const FunctionDecl *Delete) {
6033 if (Chain && Chain->isProcessingUpdateRecords()) return;
6034 assert(!WritingAST && "Already writing the AST!");
6035 assert(Delete && "Not given an operator delete");
6037 Chain->forEachImportedKeyDecl(DD, [&](const Decl *D) {
6038 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_RESOLVED_DTOR_DELETE, Delete));
6042 void ASTWriter::CompletedImplicitDefinition(const FunctionDecl *D) {
6043 if (Chain && Chain->isProcessingUpdateRecords()) return;
6044 assert(!WritingAST && "Already writing the AST!");
6045 if (!D->isFromASTFile())
6046 return; // Declaration not imported from PCH.
6048 // Implicit function decl from a PCH was defined.
6049 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_FUNCTION_DEFINITION));
6052 void ASTWriter::FunctionDefinitionInstantiated(const FunctionDecl *D) {
6053 if (Chain && Chain->isProcessingUpdateRecords()) return;
6054 assert(!WritingAST && "Already writing the AST!");
6055 if (!D->isFromASTFile())
6058 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_FUNCTION_DEFINITION));
6061 void ASTWriter::StaticDataMemberInstantiated(const VarDecl *D) {
6062 if (Chain && Chain->isProcessingUpdateRecords()) return;
6063 assert(!WritingAST && "Already writing the AST!");
6064 if (!D->isFromASTFile())
6067 // Since the actual instantiation is delayed, this really means that we need
6068 // to update the instantiation location.
6069 DeclUpdates[D].push_back(
6070 DeclUpdate(UPD_CXX_INSTANTIATED_STATIC_DATA_MEMBER,
6071 D->getMemberSpecializationInfo()->getPointOfInstantiation()));
6074 void ASTWriter::DefaultArgumentInstantiated(const ParmVarDecl *D) {
6075 if (Chain && Chain->isProcessingUpdateRecords()) return;
6076 assert(!WritingAST && "Already writing the AST!");
6077 if (!D->isFromASTFile())
6080 DeclUpdates[D].push_back(
6081 DeclUpdate(UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT, D));
6084 void ASTWriter::DefaultMemberInitializerInstantiated(const FieldDecl *D) {
6085 assert(!WritingAST && "Already writing the AST!");
6086 if (!D->isFromASTFile())
6089 DeclUpdates[D].push_back(
6090 DeclUpdate(UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER, D));
6093 void ASTWriter::AddedObjCCategoryToInterface(const ObjCCategoryDecl *CatD,
6094 const ObjCInterfaceDecl *IFD) {
6095 if (Chain && Chain->isProcessingUpdateRecords()) return;
6096 assert(!WritingAST && "Already writing the AST!");
6097 if (!IFD->isFromASTFile())
6098 return; // Declaration not imported from PCH.
6100 assert(IFD->getDefinition() && "Category on a class without a definition?");
6101 ObjCClassesWithCategories.insert(
6102 const_cast<ObjCInterfaceDecl *>(IFD->getDefinition()));
6105 void ASTWriter::DeclarationMarkedUsed(const Decl *D) {
6106 if (Chain && Chain->isProcessingUpdateRecords()) return;
6107 assert(!WritingAST && "Already writing the AST!");
6109 // If there is *any* declaration of the entity that's not from an AST file,
6110 // we can skip writing the update record. We make sure that isUsed() triggers
6111 // completion of the redeclaration chain of the entity.
6112 for (auto Prev = D->getMostRecentDecl(); Prev; Prev = Prev->getPreviousDecl())
6113 if (IsLocalDecl(Prev))
6116 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_MARKED_USED));
6119 void ASTWriter::DeclarationMarkedOpenMPThreadPrivate(const Decl *D) {
6120 if (Chain && Chain->isProcessingUpdateRecords()) return;
6121 assert(!WritingAST && "Already writing the AST!");
6122 if (!D->isFromASTFile())
6125 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_MARKED_OPENMP_THREADPRIVATE));
6128 void ASTWriter::DeclarationMarkedOpenMPDeclareTarget(const Decl *D,
6130 if (Chain && Chain->isProcessingUpdateRecords()) return;
6131 assert(!WritingAST && "Already writing the AST!");
6132 if (!D->isFromASTFile())
6135 DeclUpdates[D].push_back(
6136 DeclUpdate(UPD_DECL_MARKED_OPENMP_DECLARETARGET, Attr));
6139 void ASTWriter::RedefinedHiddenDefinition(const NamedDecl *D, Module *M) {
6140 if (Chain && Chain->isProcessingUpdateRecords()) return;
6141 assert(!WritingAST && "Already writing the AST!");
6142 assert(D->isHidden() && "expected a hidden declaration");
6143 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_EXPORTED, M));
6146 void ASTWriter::AddedAttributeToRecord(const Attr *Attr,
6147 const RecordDecl *Record) {
6148 if (Chain && Chain->isProcessingUpdateRecords()) return;
6149 assert(!WritingAST && "Already writing the AST!");
6150 if (!Record->isFromASTFile())
6152 DeclUpdates[Record].push_back(DeclUpdate(UPD_ADDED_ATTR_TO_RECORD, Attr));
6155 void ASTWriter::AddedCXXTemplateSpecialization(
6156 const ClassTemplateDecl *TD, const ClassTemplateSpecializationDecl *D) {
6157 assert(!WritingAST && "Already writing the AST!");
6159 if (!TD->getFirstDecl()->isFromASTFile())
6161 if (Chain && Chain->isProcessingUpdateRecords())
6164 DeclsToEmitEvenIfUnreferenced.push_back(D);
6167 void ASTWriter::AddedCXXTemplateSpecialization(
6168 const VarTemplateDecl *TD, const VarTemplateSpecializationDecl *D) {
6169 assert(!WritingAST && "Already writing the AST!");
6171 if (!TD->getFirstDecl()->isFromASTFile())
6173 if (Chain && Chain->isProcessingUpdateRecords())
6176 DeclsToEmitEvenIfUnreferenced.push_back(D);
6179 void ASTWriter::AddedCXXTemplateSpecialization(const FunctionTemplateDecl *TD,
6180 const FunctionDecl *D) {
6181 assert(!WritingAST && "Already writing the AST!");
6183 if (!TD->getFirstDecl()->isFromASTFile())
6185 if (Chain && Chain->isProcessingUpdateRecords())
6188 DeclsToEmitEvenIfUnreferenced.push_back(D);