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);
1096 RECORD(PP_CONDITIONAL_STACK);
1098 // SourceManager Block.
1099 BLOCK(SOURCE_MANAGER_BLOCK);
1100 RECORD(SM_SLOC_FILE_ENTRY);
1101 RECORD(SM_SLOC_BUFFER_ENTRY);
1102 RECORD(SM_SLOC_BUFFER_BLOB);
1103 RECORD(SM_SLOC_BUFFER_BLOB_COMPRESSED);
1104 RECORD(SM_SLOC_EXPANSION_ENTRY);
1106 // Preprocessor Block.
1107 BLOCK(PREPROCESSOR_BLOCK);
1108 RECORD(PP_MACRO_DIRECTIVE_HISTORY);
1109 RECORD(PP_MACRO_FUNCTION_LIKE);
1110 RECORD(PP_MACRO_OBJECT_LIKE);
1111 RECORD(PP_MODULE_MACRO);
1115 BLOCK(SUBMODULE_BLOCK);
1116 RECORD(SUBMODULE_METADATA);
1117 RECORD(SUBMODULE_DEFINITION);
1118 RECORD(SUBMODULE_UMBRELLA_HEADER);
1119 RECORD(SUBMODULE_HEADER);
1120 RECORD(SUBMODULE_TOPHEADER);
1121 RECORD(SUBMODULE_UMBRELLA_DIR);
1122 RECORD(SUBMODULE_IMPORTS);
1123 RECORD(SUBMODULE_EXPORTS);
1124 RECORD(SUBMODULE_REQUIRES);
1125 RECORD(SUBMODULE_EXCLUDED_HEADER);
1126 RECORD(SUBMODULE_LINK_LIBRARY);
1127 RECORD(SUBMODULE_CONFIG_MACRO);
1128 RECORD(SUBMODULE_CONFLICT);
1129 RECORD(SUBMODULE_PRIVATE_HEADER);
1130 RECORD(SUBMODULE_TEXTUAL_HEADER);
1131 RECORD(SUBMODULE_PRIVATE_TEXTUAL_HEADER);
1132 RECORD(SUBMODULE_INITIALIZERS);
1135 BLOCK(COMMENTS_BLOCK);
1136 RECORD(COMMENTS_RAW_COMMENT);
1138 // Decls and Types block.
1139 BLOCK(DECLTYPES_BLOCK);
1140 RECORD(TYPE_EXT_QUAL);
1141 RECORD(TYPE_COMPLEX);
1142 RECORD(TYPE_POINTER);
1143 RECORD(TYPE_BLOCK_POINTER);
1144 RECORD(TYPE_LVALUE_REFERENCE);
1145 RECORD(TYPE_RVALUE_REFERENCE);
1146 RECORD(TYPE_MEMBER_POINTER);
1147 RECORD(TYPE_CONSTANT_ARRAY);
1148 RECORD(TYPE_INCOMPLETE_ARRAY);
1149 RECORD(TYPE_VARIABLE_ARRAY);
1150 RECORD(TYPE_VECTOR);
1151 RECORD(TYPE_EXT_VECTOR);
1152 RECORD(TYPE_FUNCTION_NO_PROTO);
1153 RECORD(TYPE_FUNCTION_PROTO);
1154 RECORD(TYPE_TYPEDEF);
1155 RECORD(TYPE_TYPEOF_EXPR);
1156 RECORD(TYPE_TYPEOF);
1157 RECORD(TYPE_RECORD);
1159 RECORD(TYPE_OBJC_INTERFACE);
1160 RECORD(TYPE_OBJC_OBJECT_POINTER);
1161 RECORD(TYPE_DECLTYPE);
1162 RECORD(TYPE_ELABORATED);
1163 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM);
1164 RECORD(TYPE_UNRESOLVED_USING);
1165 RECORD(TYPE_INJECTED_CLASS_NAME);
1166 RECORD(TYPE_OBJC_OBJECT);
1167 RECORD(TYPE_TEMPLATE_TYPE_PARM);
1168 RECORD(TYPE_TEMPLATE_SPECIALIZATION);
1169 RECORD(TYPE_DEPENDENT_NAME);
1170 RECORD(TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION);
1171 RECORD(TYPE_DEPENDENT_SIZED_ARRAY);
1173 RECORD(TYPE_PACK_EXPANSION);
1174 RECORD(TYPE_ATTRIBUTED);
1175 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK);
1177 RECORD(TYPE_UNARY_TRANSFORM);
1178 RECORD(TYPE_ATOMIC);
1179 RECORD(TYPE_DECAYED);
1180 RECORD(TYPE_ADJUSTED);
1181 RECORD(TYPE_OBJC_TYPE_PARAM);
1182 RECORD(LOCAL_REDECLARATIONS);
1183 RECORD(DECL_TYPEDEF);
1184 RECORD(DECL_TYPEALIAS);
1186 RECORD(DECL_RECORD);
1187 RECORD(DECL_ENUM_CONSTANT);
1188 RECORD(DECL_FUNCTION);
1189 RECORD(DECL_OBJC_METHOD);
1190 RECORD(DECL_OBJC_INTERFACE);
1191 RECORD(DECL_OBJC_PROTOCOL);
1192 RECORD(DECL_OBJC_IVAR);
1193 RECORD(DECL_OBJC_AT_DEFS_FIELD);
1194 RECORD(DECL_OBJC_CATEGORY);
1195 RECORD(DECL_OBJC_CATEGORY_IMPL);
1196 RECORD(DECL_OBJC_IMPLEMENTATION);
1197 RECORD(DECL_OBJC_COMPATIBLE_ALIAS);
1198 RECORD(DECL_OBJC_PROPERTY);
1199 RECORD(DECL_OBJC_PROPERTY_IMPL);
1201 RECORD(DECL_MS_PROPERTY);
1203 RECORD(DECL_IMPLICIT_PARAM);
1204 RECORD(DECL_PARM_VAR);
1205 RECORD(DECL_FILE_SCOPE_ASM);
1207 RECORD(DECL_CONTEXT_LEXICAL);
1208 RECORD(DECL_CONTEXT_VISIBLE);
1209 RECORD(DECL_NAMESPACE);
1210 RECORD(DECL_NAMESPACE_ALIAS);
1212 RECORD(DECL_USING_SHADOW);
1213 RECORD(DECL_USING_DIRECTIVE);
1214 RECORD(DECL_UNRESOLVED_USING_VALUE);
1215 RECORD(DECL_UNRESOLVED_USING_TYPENAME);
1216 RECORD(DECL_LINKAGE_SPEC);
1217 RECORD(DECL_CXX_RECORD);
1218 RECORD(DECL_CXX_METHOD);
1219 RECORD(DECL_CXX_CONSTRUCTOR);
1220 RECORD(DECL_CXX_INHERITED_CONSTRUCTOR);
1221 RECORD(DECL_CXX_DESTRUCTOR);
1222 RECORD(DECL_CXX_CONVERSION);
1223 RECORD(DECL_ACCESS_SPEC);
1224 RECORD(DECL_FRIEND);
1225 RECORD(DECL_FRIEND_TEMPLATE);
1226 RECORD(DECL_CLASS_TEMPLATE);
1227 RECORD(DECL_CLASS_TEMPLATE_SPECIALIZATION);
1228 RECORD(DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION);
1229 RECORD(DECL_VAR_TEMPLATE);
1230 RECORD(DECL_VAR_TEMPLATE_SPECIALIZATION);
1231 RECORD(DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION);
1232 RECORD(DECL_FUNCTION_TEMPLATE);
1233 RECORD(DECL_TEMPLATE_TYPE_PARM);
1234 RECORD(DECL_NON_TYPE_TEMPLATE_PARM);
1235 RECORD(DECL_TEMPLATE_TEMPLATE_PARM);
1236 RECORD(DECL_TYPE_ALIAS_TEMPLATE);
1237 RECORD(DECL_STATIC_ASSERT);
1238 RECORD(DECL_CXX_BASE_SPECIFIERS);
1239 RECORD(DECL_CXX_CTOR_INITIALIZERS);
1240 RECORD(DECL_INDIRECTFIELD);
1241 RECORD(DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK);
1242 RECORD(DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK);
1243 RECORD(DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION);
1244 RECORD(DECL_IMPORT);
1245 RECORD(DECL_OMP_THREADPRIVATE);
1247 RECORD(DECL_OBJC_TYPE_PARAM);
1248 RECORD(DECL_OMP_CAPTUREDEXPR);
1249 RECORD(DECL_PRAGMA_COMMENT);
1250 RECORD(DECL_PRAGMA_DETECT_MISMATCH);
1251 RECORD(DECL_OMP_DECLARE_REDUCTION);
1253 // Statements and Exprs can occur in the Decls and Types block.
1254 AddStmtsExprs(Stream, Record);
1256 BLOCK(PREPROCESSOR_DETAIL_BLOCK);
1257 RECORD(PPD_MACRO_EXPANSION);
1258 RECORD(PPD_MACRO_DEFINITION);
1259 RECORD(PPD_INCLUSION_DIRECTIVE);
1261 // Decls and Types block.
1262 BLOCK(EXTENSION_BLOCK);
1263 RECORD(EXTENSION_METADATA);
1265 BLOCK(UNHASHED_CONTROL_BLOCK);
1267 RECORD(DIAGNOSTIC_OPTIONS);
1268 RECORD(DIAG_PRAGMA_MAPPINGS);
1275 /// \brief Prepares a path for being written to an AST file by converting it
1276 /// to an absolute path and removing nested './'s.
1278 /// \return \c true if the path was changed.
1279 static bool cleanPathForOutput(FileManager &FileMgr,
1280 SmallVectorImpl<char> &Path) {
1281 bool Changed = FileMgr.makeAbsolutePath(Path);
1282 return Changed | llvm::sys::path::remove_dots(Path);
1285 /// \brief Adjusts the given filename to only write out the portion of the
1286 /// filename that is not part of the system root directory.
1288 /// \param Filename the file name to adjust.
1290 /// \param BaseDir When non-NULL, the PCH file is a relocatable AST file and
1291 /// the returned filename will be adjusted by this root directory.
1293 /// \returns either the original filename (if it needs no adjustment) or the
1294 /// adjusted filename (which points into the @p Filename parameter).
1296 adjustFilenameForRelocatableAST(const char *Filename, StringRef BaseDir) {
1297 assert(Filename && "No file name to adjust?");
1299 if (BaseDir.empty())
1302 // Verify that the filename and the system root have the same prefix.
1304 for (; Filename[Pos] && Pos < BaseDir.size(); ++Pos)
1305 if (Filename[Pos] != BaseDir[Pos])
1306 return Filename; // Prefixes don't match.
1308 // We hit the end of the filename before we hit the end of the system root.
1312 // If there's not a path separator at the end of the base directory nor
1313 // immediately after it, then this isn't within the base directory.
1314 if (!llvm::sys::path::is_separator(Filename[Pos])) {
1315 if (!llvm::sys::path::is_separator(BaseDir.back()))
1318 // If the file name has a '/' at the current position, skip over the '/'.
1319 // We distinguish relative paths from absolute paths by the
1320 // absence of '/' at the beginning of relative paths.
1322 // FIXME: This is wrong. We distinguish them by asking if the path is
1323 // absolute, which isn't the same thing. And there might be multiple '/'s
1324 // in a row. Use a better mechanism to indicate whether we have emitted an
1325 // absolute or relative path.
1329 return Filename + Pos;
1332 ASTFileSignature ASTWriter::createSignature(StringRef Bytes) {
1333 // Calculate the hash till start of UNHASHED_CONTROL_BLOCK.
1335 Hasher.update(ArrayRef<uint8_t>(Bytes.bytes_begin(), Bytes.size()));
1336 auto Hash = Hasher.result();
1338 // Convert to an array [5*i32].
1339 ASTFileSignature Signature;
1340 auto LShift = [&](unsigned char Val, unsigned Shift) {
1341 return (uint32_t)Val << Shift;
1343 for (int I = 0; I != 5; ++I)
1344 Signature[I] = LShift(Hash[I * 4 + 0], 24) | LShift(Hash[I * 4 + 1], 16) |
1345 LShift(Hash[I * 4 + 2], 8) | LShift(Hash[I * 4 + 3], 0);
1350 ASTFileSignature ASTWriter::writeUnhashedControlBlock(Preprocessor &PP,
1351 ASTContext &Context) {
1352 // Flush first to prepare the PCM hash (signature).
1353 Stream.FlushToWord();
1354 auto StartOfUnhashedControl = Stream.GetCurrentBitNo() >> 3;
1356 // Enter the block and prepare to write records.
1358 Stream.EnterSubblock(UNHASHED_CONTROL_BLOCK_ID, 5);
1360 // For implicit modules, write the hash of the PCM as its signature.
1361 ASTFileSignature Signature;
1362 if (WritingModule &&
1363 PP.getHeaderSearchInfo().getHeaderSearchOpts().ModulesHashContent) {
1364 Signature = createSignature(StringRef(Buffer.begin(), StartOfUnhashedControl));
1365 Record.append(Signature.begin(), Signature.end());
1366 Stream.EmitRecord(SIGNATURE, Record);
1370 // Diagnostic options.
1371 const auto &Diags = Context.getDiagnostics();
1372 const DiagnosticOptions &DiagOpts = Diags.getDiagnosticOptions();
1373 #define DIAGOPT(Name, Bits, Default) Record.push_back(DiagOpts.Name);
1374 #define ENUM_DIAGOPT(Name, Type, Bits, Default) \
1375 Record.push_back(static_cast<unsigned>(DiagOpts.get##Name()));
1376 #include "clang/Basic/DiagnosticOptions.def"
1377 Record.push_back(DiagOpts.Warnings.size());
1378 for (unsigned I = 0, N = DiagOpts.Warnings.size(); I != N; ++I)
1379 AddString(DiagOpts.Warnings[I], Record);
1380 Record.push_back(DiagOpts.Remarks.size());
1381 for (unsigned I = 0, N = DiagOpts.Remarks.size(); I != N; ++I)
1382 AddString(DiagOpts.Remarks[I], Record);
1383 // Note: we don't serialize the log or serialization file names, because they
1384 // are generally transient files and will almost always be overridden.
1385 Stream.EmitRecord(DIAGNOSTIC_OPTIONS, Record);
1387 // Write out the diagnostic/pragma mappings.
1388 WritePragmaDiagnosticMappings(Diags, /* IsModule = */ WritingModule);
1390 // Leave the options block.
1395 /// \brief Write the control block.
1396 void ASTWriter::WriteControlBlock(Preprocessor &PP, ASTContext &Context,
1398 const std::string &OutputFile) {
1399 using namespace llvm;
1400 Stream.EnterSubblock(CONTROL_BLOCK_ID, 5);
1404 auto MetadataAbbrev = std::make_shared<BitCodeAbbrev>();
1405 MetadataAbbrev->Add(BitCodeAbbrevOp(METADATA));
1406 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Major
1407 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Minor
1408 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang maj.
1409 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang min.
1410 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Relocatable
1411 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Timestamps
1412 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Errors
1413 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // SVN branch/tag
1414 unsigned MetadataAbbrevCode = Stream.EmitAbbrev(std::move(MetadataAbbrev));
1415 assert((!WritingModule || isysroot.empty()) &&
1416 "writing module as a relocatable PCH?");
1418 RecordData::value_type Record[] = {METADATA, VERSION_MAJOR, VERSION_MINOR,
1419 CLANG_VERSION_MAJOR, CLANG_VERSION_MINOR,
1420 !isysroot.empty(), IncludeTimestamps,
1421 ASTHasCompilerErrors};
1422 Stream.EmitRecordWithBlob(MetadataAbbrevCode, Record,
1423 getClangFullRepositoryVersion());
1425 if (WritingModule) {
1428 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1429 Abbrev->Add(BitCodeAbbrevOp(MODULE_NAME));
1430 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
1431 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1432 RecordData::value_type Record[] = {MODULE_NAME};
1433 Stream.EmitRecordWithBlob(AbbrevCode, Record, WritingModule->Name);
1436 if (WritingModule && WritingModule->Directory) {
1437 SmallString<128> BaseDir(WritingModule->Directory->getName());
1438 cleanPathForOutput(Context.getSourceManager().getFileManager(), BaseDir);
1440 // If the home of the module is the current working directory, then we
1441 // want to pick up the cwd of the build process loading the module, not
1442 // our cwd, when we load this module.
1443 if (!PP.getHeaderSearchInfo()
1444 .getHeaderSearchOpts()
1445 .ModuleMapFileHomeIsCwd ||
1446 WritingModule->Directory->getName() != StringRef(".")) {
1447 // Module directory.
1448 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1449 Abbrev->Add(BitCodeAbbrevOp(MODULE_DIRECTORY));
1450 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Directory
1451 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1453 RecordData::value_type Record[] = {MODULE_DIRECTORY};
1454 Stream.EmitRecordWithBlob(AbbrevCode, Record, BaseDir);
1457 // Write out all other paths relative to the base directory if possible.
1458 BaseDirectory.assign(BaseDir.begin(), BaseDir.end());
1459 } else if (!isysroot.empty()) {
1460 // Write out paths relative to the sysroot if possible.
1461 BaseDirectory = isysroot;
1465 if (WritingModule) {
1468 auto &Map = PP.getHeaderSearchInfo().getModuleMap();
1470 // Primary module map file.
1471 AddPath(Map.getModuleMapFileForUniquing(WritingModule)->getName(), Record);
1473 // Additional module map files.
1474 if (auto *AdditionalModMaps =
1475 Map.getAdditionalModuleMapFiles(WritingModule)) {
1476 Record.push_back(AdditionalModMaps->size());
1477 for (const FileEntry *F : *AdditionalModMaps)
1478 AddPath(F->getName(), Record);
1480 Record.push_back(0);
1483 Stream.EmitRecord(MODULE_MAP_FILE, Record);
1488 serialization::ModuleManager &Mgr = Chain->getModuleManager();
1491 for (ModuleFile &M : Mgr) {
1492 // Skip modules that weren't directly imported.
1493 if (!M.isDirectlyImported())
1496 Record.push_back((unsigned)M.Kind); // FIXME: Stable encoding
1497 AddSourceLocation(M.ImportLoc, Record);
1499 // If we have calculated signature, there is no need to store
1500 // the size or timestamp.
1501 Record.push_back(M.Signature ? 0 : M.File->getSize());
1502 Record.push_back(M.Signature ? 0 : getTimestampForOutput(M.File));
1504 for (auto I : M.Signature)
1505 Record.push_back(I);
1507 AddPath(M.FileName, Record);
1509 Stream.EmitRecord(IMPORTS, Record);
1512 // Write the options block.
1513 Stream.EnterSubblock(OPTIONS_BLOCK_ID, 4);
1515 // Language options.
1517 const LangOptions &LangOpts = Context.getLangOpts();
1518 #define LANGOPT(Name, Bits, Default, Description) \
1519 Record.push_back(LangOpts.Name);
1520 #define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1521 Record.push_back(static_cast<unsigned>(LangOpts.get##Name()));
1522 #include "clang/Basic/LangOptions.def"
1523 #define SANITIZER(NAME, ID) \
1524 Record.push_back(LangOpts.Sanitize.has(SanitizerKind::ID));
1525 #include "clang/Basic/Sanitizers.def"
1527 Record.push_back(LangOpts.ModuleFeatures.size());
1528 for (StringRef Feature : LangOpts.ModuleFeatures)
1529 AddString(Feature, Record);
1531 Record.push_back((unsigned) LangOpts.ObjCRuntime.getKind());
1532 AddVersionTuple(LangOpts.ObjCRuntime.getVersion(), Record);
1534 AddString(LangOpts.CurrentModule, Record);
1537 Record.push_back(LangOpts.CommentOpts.BlockCommandNames.size());
1538 for (const auto &I : LangOpts.CommentOpts.BlockCommandNames) {
1539 AddString(I, Record);
1541 Record.push_back(LangOpts.CommentOpts.ParseAllComments);
1543 // OpenMP offloading options.
1544 Record.push_back(LangOpts.OMPTargetTriples.size());
1545 for (auto &T : LangOpts.OMPTargetTriples)
1546 AddString(T.getTriple(), Record);
1548 AddString(LangOpts.OMPHostIRFile, Record);
1550 Stream.EmitRecord(LANGUAGE_OPTIONS, Record);
1554 const TargetInfo &Target = Context.getTargetInfo();
1555 const TargetOptions &TargetOpts = Target.getTargetOpts();
1556 AddString(TargetOpts.Triple, Record);
1557 AddString(TargetOpts.CPU, Record);
1558 AddString(TargetOpts.ABI, Record);
1559 Record.push_back(TargetOpts.FeaturesAsWritten.size());
1560 for (unsigned I = 0, N = TargetOpts.FeaturesAsWritten.size(); I != N; ++I) {
1561 AddString(TargetOpts.FeaturesAsWritten[I], Record);
1563 Record.push_back(TargetOpts.Features.size());
1564 for (unsigned I = 0, N = TargetOpts.Features.size(); I != N; ++I) {
1565 AddString(TargetOpts.Features[I], Record);
1567 Stream.EmitRecord(TARGET_OPTIONS, Record);
1569 // File system options.
1571 const FileSystemOptions &FSOpts =
1572 Context.getSourceManager().getFileManager().getFileSystemOpts();
1573 AddString(FSOpts.WorkingDir, Record);
1574 Stream.EmitRecord(FILE_SYSTEM_OPTIONS, Record);
1576 // Header search options.
1578 const HeaderSearchOptions &HSOpts
1579 = PP.getHeaderSearchInfo().getHeaderSearchOpts();
1580 AddString(HSOpts.Sysroot, Record);
1583 Record.push_back(HSOpts.UserEntries.size());
1584 for (unsigned I = 0, N = HSOpts.UserEntries.size(); I != N; ++I) {
1585 const HeaderSearchOptions::Entry &Entry = HSOpts.UserEntries[I];
1586 AddString(Entry.Path, Record);
1587 Record.push_back(static_cast<unsigned>(Entry.Group));
1588 Record.push_back(Entry.IsFramework);
1589 Record.push_back(Entry.IgnoreSysRoot);
1592 // System header prefixes.
1593 Record.push_back(HSOpts.SystemHeaderPrefixes.size());
1594 for (unsigned I = 0, N = HSOpts.SystemHeaderPrefixes.size(); I != N; ++I) {
1595 AddString(HSOpts.SystemHeaderPrefixes[I].Prefix, Record);
1596 Record.push_back(HSOpts.SystemHeaderPrefixes[I].IsSystemHeader);
1599 AddString(HSOpts.ResourceDir, Record);
1600 AddString(HSOpts.ModuleCachePath, Record);
1601 AddString(HSOpts.ModuleUserBuildPath, Record);
1602 Record.push_back(HSOpts.DisableModuleHash);
1603 Record.push_back(HSOpts.UseBuiltinIncludes);
1604 Record.push_back(HSOpts.UseStandardSystemIncludes);
1605 Record.push_back(HSOpts.UseStandardCXXIncludes);
1606 Record.push_back(HSOpts.UseLibcxx);
1607 // Write out the specific module cache path that contains the module files.
1608 AddString(PP.getHeaderSearchInfo().getModuleCachePath(), Record);
1609 Stream.EmitRecord(HEADER_SEARCH_OPTIONS, Record);
1611 // Preprocessor options.
1613 const PreprocessorOptions &PPOpts = PP.getPreprocessorOpts();
1615 // Macro definitions.
1616 Record.push_back(PPOpts.Macros.size());
1617 for (unsigned I = 0, N = PPOpts.Macros.size(); I != N; ++I) {
1618 AddString(PPOpts.Macros[I].first, Record);
1619 Record.push_back(PPOpts.Macros[I].second);
1623 Record.push_back(PPOpts.Includes.size());
1624 for (unsigned I = 0, N = PPOpts.Includes.size(); I != N; ++I)
1625 AddString(PPOpts.Includes[I], Record);
1628 Record.push_back(PPOpts.MacroIncludes.size());
1629 for (unsigned I = 0, N = PPOpts.MacroIncludes.size(); I != N; ++I)
1630 AddString(PPOpts.MacroIncludes[I], Record);
1632 Record.push_back(PPOpts.UsePredefines);
1633 // Detailed record is important since it is used for the module cache hash.
1634 Record.push_back(PPOpts.DetailedRecord);
1635 AddString(PPOpts.ImplicitPCHInclude, Record);
1636 AddString(PPOpts.ImplicitPTHInclude, Record);
1637 Record.push_back(static_cast<unsigned>(PPOpts.ObjCXXARCStandardLibrary));
1638 Stream.EmitRecord(PREPROCESSOR_OPTIONS, Record);
1640 // Leave the options block.
1643 // Original file name and file ID
1644 SourceManager &SM = Context.getSourceManager();
1645 if (const FileEntry *MainFile = SM.getFileEntryForID(SM.getMainFileID())) {
1646 auto FileAbbrev = std::make_shared<BitCodeAbbrev>();
1647 FileAbbrev->Add(BitCodeAbbrevOp(ORIGINAL_FILE));
1648 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // File ID
1649 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1650 unsigned FileAbbrevCode = Stream.EmitAbbrev(std::move(FileAbbrev));
1653 Record.push_back(ORIGINAL_FILE);
1654 Record.push_back(SM.getMainFileID().getOpaqueValue());
1655 EmitRecordWithPath(FileAbbrevCode, Record, MainFile->getName());
1659 Record.push_back(SM.getMainFileID().getOpaqueValue());
1660 Stream.EmitRecord(ORIGINAL_FILE_ID, Record);
1662 // Original PCH directory
1663 if (!OutputFile.empty() && OutputFile != "-") {
1664 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1665 Abbrev->Add(BitCodeAbbrevOp(ORIGINAL_PCH_DIR));
1666 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1667 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1669 SmallString<128> OutputPath(OutputFile);
1671 SM.getFileManager().makeAbsolutePath(OutputPath);
1672 StringRef origDir = llvm::sys::path::parent_path(OutputPath);
1674 RecordData::value_type Record[] = {ORIGINAL_PCH_DIR};
1675 Stream.EmitRecordWithBlob(AbbrevCode, Record, origDir);
1678 WriteInputFiles(Context.SourceMgr,
1679 PP.getHeaderSearchInfo().getHeaderSearchOpts(),
1680 PP.getLangOpts().Modules);
1686 /// \brief An input file.
1687 struct InputFileEntry {
1688 const FileEntry *File;
1691 bool BufferOverridden;
1694 } // end anonymous namespace
1696 void ASTWriter::WriteInputFiles(SourceManager &SourceMgr,
1697 HeaderSearchOptions &HSOpts,
1699 using namespace llvm;
1700 Stream.EnterSubblock(INPUT_FILES_BLOCK_ID, 4);
1702 // Create input-file abbreviation.
1703 auto IFAbbrev = std::make_shared<BitCodeAbbrev>();
1704 IFAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE));
1705 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
1706 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 12)); // Size
1707 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // Modification time
1708 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Overridden
1709 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Transient
1710 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1711 unsigned IFAbbrevCode = Stream.EmitAbbrev(std::move(IFAbbrev));
1713 // Get all ContentCache objects for files, sorted by whether the file is a
1714 // system one or not. System files go at the back, users files at the front.
1715 std::deque<InputFileEntry> SortedFiles;
1716 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size(); I != N; ++I) {
1717 // Get this source location entry.
1718 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
1719 assert(&SourceMgr.getSLocEntry(FileID::get(I)) == SLoc);
1721 // We only care about file entries that were not overridden.
1722 if (!SLoc->isFile())
1724 const SrcMgr::ContentCache *Cache = SLoc->getFile().getContentCache();
1725 if (!Cache->OrigEntry)
1728 InputFileEntry Entry;
1729 Entry.File = Cache->OrigEntry;
1730 Entry.IsSystemFile = Cache->IsSystemFile;
1731 Entry.IsTransient = Cache->IsTransient;
1732 Entry.BufferOverridden = Cache->BufferOverridden;
1733 if (Cache->IsSystemFile)
1734 SortedFiles.push_back(Entry);
1736 SortedFiles.push_front(Entry);
1739 unsigned UserFilesNum = 0;
1740 // Write out all of the input files.
1741 std::vector<uint64_t> InputFileOffsets;
1742 for (const auto &Entry : SortedFiles) {
1743 uint32_t &InputFileID = InputFileIDs[Entry.File];
1744 if (InputFileID != 0)
1745 continue; // already recorded this file.
1747 // Record this entry's offset.
1748 InputFileOffsets.push_back(Stream.GetCurrentBitNo());
1750 InputFileID = InputFileOffsets.size();
1752 if (!Entry.IsSystemFile)
1755 // Emit size/modification time for this file.
1756 // And whether this file was overridden.
1757 RecordData::value_type Record[] = {
1759 InputFileOffsets.size(),
1760 (uint64_t)Entry.File->getSize(),
1761 (uint64_t)getTimestampForOutput(Entry.File),
1762 Entry.BufferOverridden,
1765 EmitRecordWithPath(IFAbbrevCode, Record, Entry.File->getName());
1770 // Create input file offsets abbreviation.
1771 auto OffsetsAbbrev = std::make_shared<BitCodeAbbrev>();
1772 OffsetsAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE_OFFSETS));
1773 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # input files
1774 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # non-system
1776 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Array
1777 unsigned OffsetsAbbrevCode = Stream.EmitAbbrev(std::move(OffsetsAbbrev));
1779 // Write input file offsets.
1780 RecordData::value_type Record[] = {INPUT_FILE_OFFSETS,
1781 InputFileOffsets.size(), UserFilesNum};
1782 Stream.EmitRecordWithBlob(OffsetsAbbrevCode, Record, bytes(InputFileOffsets));
1785 //===----------------------------------------------------------------------===//
1786 // Source Manager Serialization
1787 //===----------------------------------------------------------------------===//
1789 /// \brief Create an abbreviation for the SLocEntry that refers to a
1791 static unsigned CreateSLocFileAbbrev(llvm::BitstreamWriter &Stream) {
1792 using namespace llvm;
1794 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1795 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_FILE_ENTRY));
1796 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1797 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1798 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Characteristic
1799 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1800 // FileEntry fields.
1801 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Input File ID
1802 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumCreatedFIDs
1803 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 24)); // FirstDeclIndex
1804 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumDecls
1805 return Stream.EmitAbbrev(std::move(Abbrev));
1808 /// \brief Create an abbreviation for the SLocEntry that refers to a
1810 static unsigned CreateSLocBufferAbbrev(llvm::BitstreamWriter &Stream) {
1811 using namespace llvm;
1813 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1814 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_BUFFER_ENTRY));
1815 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1816 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1817 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Characteristic
1818 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1819 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Buffer name blob
1820 return Stream.EmitAbbrev(std::move(Abbrev));
1823 /// \brief Create an abbreviation for the SLocEntry that refers to a
1825 static unsigned CreateSLocBufferBlobAbbrev(llvm::BitstreamWriter &Stream,
1827 using namespace llvm;
1829 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1830 Abbrev->Add(BitCodeAbbrevOp(Compressed ? SM_SLOC_BUFFER_BLOB_COMPRESSED
1831 : SM_SLOC_BUFFER_BLOB));
1833 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Uncompressed size
1834 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Blob
1835 return Stream.EmitAbbrev(std::move(Abbrev));
1838 /// \brief Create an abbreviation for the SLocEntry that refers to a macro
1840 static unsigned CreateSLocExpansionAbbrev(llvm::BitstreamWriter &Stream) {
1841 using namespace llvm;
1843 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1844 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_EXPANSION_ENTRY));
1845 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1846 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Spelling location
1847 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Start location
1848 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // End location
1849 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Token length
1850 return Stream.EmitAbbrev(std::move(Abbrev));
1855 // Trait used for the on-disk hash table of header search information.
1856 class HeaderFileInfoTrait {
1858 const HeaderSearch &HS;
1860 // Keep track of the framework names we've used during serialization.
1861 SmallVector<char, 128> FrameworkStringData;
1862 llvm::StringMap<unsigned> FrameworkNameOffset;
1865 HeaderFileInfoTrait(ASTWriter &Writer, const HeaderSearch &HS)
1866 : Writer(Writer), HS(HS) { }
1869 const FileEntry *FE;
1872 typedef const key_type &key_type_ref;
1874 typedef HeaderFileInfo data_type;
1875 typedef const data_type &data_type_ref;
1876 typedef unsigned hash_value_type;
1877 typedef unsigned offset_type;
1879 hash_value_type ComputeHash(key_type_ref key) {
1880 // The hash is based only on size/time of the file, so that the reader can
1881 // match even when symlinking or excess path elements ("foo/../", "../")
1882 // change the form of the name. However, complete path is still the key.
1883 return llvm::hash_combine(key.FE->getSize(),
1884 Writer.getTimestampForOutput(key.FE));
1887 std::pair<unsigned,unsigned>
1888 EmitKeyDataLength(raw_ostream& Out, key_type_ref key, data_type_ref Data) {
1889 using namespace llvm::support;
1890 endian::Writer<little> LE(Out);
1891 unsigned KeyLen = key.Filename.size() + 1 + 8 + 8;
1892 LE.write<uint16_t>(KeyLen);
1893 unsigned DataLen = 1 + 2 + 4 + 4;
1894 for (auto ModInfo : HS.getModuleMap().findAllModulesForHeader(key.FE))
1895 if (Writer.getLocalOrImportedSubmoduleID(ModInfo.getModule()))
1897 LE.write<uint8_t>(DataLen);
1898 return std::make_pair(KeyLen, DataLen);
1901 void EmitKey(raw_ostream& Out, key_type_ref key, unsigned KeyLen) {
1902 using namespace llvm::support;
1903 endian::Writer<little> LE(Out);
1904 LE.write<uint64_t>(key.FE->getSize());
1906 LE.write<uint64_t>(Writer.getTimestampForOutput(key.FE));
1908 Out.write(key.Filename.data(), KeyLen);
1911 void EmitData(raw_ostream &Out, key_type_ref key,
1912 data_type_ref Data, unsigned DataLen) {
1913 using namespace llvm::support;
1914 endian::Writer<little> LE(Out);
1915 uint64_t Start = Out.tell(); (void)Start;
1917 unsigned char Flags = (Data.isImport << 4)
1918 | (Data.isPragmaOnce << 3)
1919 | (Data.DirInfo << 1)
1920 | Data.IndexHeaderMapHeader;
1921 LE.write<uint8_t>(Flags);
1922 LE.write<uint16_t>(Data.NumIncludes);
1924 if (!Data.ControllingMacro)
1925 LE.write<uint32_t>(Data.ControllingMacroID);
1927 LE.write<uint32_t>(Writer.getIdentifierRef(Data.ControllingMacro));
1929 unsigned Offset = 0;
1930 if (!Data.Framework.empty()) {
1931 // If this header refers into a framework, save the framework name.
1932 llvm::StringMap<unsigned>::iterator Pos
1933 = FrameworkNameOffset.find(Data.Framework);
1934 if (Pos == FrameworkNameOffset.end()) {
1935 Offset = FrameworkStringData.size() + 1;
1936 FrameworkStringData.append(Data.Framework.begin(),
1937 Data.Framework.end());
1938 FrameworkStringData.push_back(0);
1940 FrameworkNameOffset[Data.Framework] = Offset;
1942 Offset = Pos->second;
1944 LE.write<uint32_t>(Offset);
1946 // FIXME: If the header is excluded, we should write out some
1947 // record of that fact.
1948 for (auto ModInfo : HS.getModuleMap().findAllModulesForHeader(key.FE)) {
1949 if (uint32_t ModID =
1950 Writer.getLocalOrImportedSubmoduleID(ModInfo.getModule())) {
1951 uint32_t Value = (ModID << 2) | (unsigned)ModInfo.getRole();
1952 assert((Value >> 2) == ModID && "overflow in header module info");
1953 LE.write<uint32_t>(Value);
1957 assert(Out.tell() - Start == DataLen && "Wrong data length");
1960 const char *strings_begin() const { return FrameworkStringData.begin(); }
1961 const char *strings_end() const { return FrameworkStringData.end(); }
1964 } // end anonymous namespace
1966 /// \brief Write the header search block for the list of files that
1968 /// \param HS The header search structure to save.
1969 void ASTWriter::WriteHeaderSearch(const HeaderSearch &HS) {
1970 SmallVector<const FileEntry *, 16> FilesByUID;
1971 HS.getFileMgr().GetUniqueIDMapping(FilesByUID);
1973 if (FilesByUID.size() > HS.header_file_size())
1974 FilesByUID.resize(HS.header_file_size());
1976 HeaderFileInfoTrait GeneratorTrait(*this, HS);
1977 llvm::OnDiskChainedHashTableGenerator<HeaderFileInfoTrait> Generator;
1978 SmallVector<const char *, 4> SavedStrings;
1979 unsigned NumHeaderSearchEntries = 0;
1980 for (unsigned UID = 0, LastUID = FilesByUID.size(); UID != LastUID; ++UID) {
1981 const FileEntry *File = FilesByUID[UID];
1985 // Get the file info. This will load info from the external source if
1986 // necessary. Skip emitting this file if we have no information on it
1987 // as a header file (in which case HFI will be null) or if it hasn't
1988 // changed since it was loaded. Also skip it if it's for a modular header
1989 // from a different module; in that case, we rely on the module(s)
1990 // containing the header to provide this information.
1991 const HeaderFileInfo *HFI =
1992 HS.getExistingFileInfo(File, /*WantExternal*/!Chain);
1993 if (!HFI || (HFI->isModuleHeader && !HFI->isCompilingModuleHeader))
1996 // Massage the file path into an appropriate form.
1997 StringRef Filename = File->getName();
1998 SmallString<128> FilenameTmp(Filename);
1999 if (PreparePathForOutput(FilenameTmp)) {
2000 // If we performed any translation on the file name at all, we need to
2001 // save this string, since the generator will refer to it later.
2002 Filename = StringRef(strdup(FilenameTmp.c_str()));
2003 SavedStrings.push_back(Filename.data());
2006 HeaderFileInfoTrait::key_type key = { File, Filename };
2007 Generator.insert(key, *HFI, GeneratorTrait);
2008 ++NumHeaderSearchEntries;
2011 // Create the on-disk hash table in a buffer.
2012 SmallString<4096> TableData;
2013 uint32_t BucketOffset;
2015 using namespace llvm::support;
2016 llvm::raw_svector_ostream Out(TableData);
2017 // Make sure that no bucket is at offset 0
2018 endian::Writer<little>(Out).write<uint32_t>(0);
2019 BucketOffset = Generator.Emit(Out, GeneratorTrait);
2022 // Create a blob abbreviation
2023 using namespace llvm;
2025 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2026 Abbrev->Add(BitCodeAbbrevOp(HEADER_SEARCH_TABLE));
2027 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2028 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2029 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2030 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2031 unsigned TableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2033 // Write the header search table
2034 RecordData::value_type Record[] = {HEADER_SEARCH_TABLE, BucketOffset,
2035 NumHeaderSearchEntries, TableData.size()};
2036 TableData.append(GeneratorTrait.strings_begin(),GeneratorTrait.strings_end());
2037 Stream.EmitRecordWithBlob(TableAbbrev, Record, TableData);
2039 // Free all of the strings we had to duplicate.
2040 for (unsigned I = 0, N = SavedStrings.size(); I != N; ++I)
2041 free(const_cast<char *>(SavedStrings[I]));
2044 static void emitBlob(llvm::BitstreamWriter &Stream, StringRef Blob,
2045 unsigned SLocBufferBlobCompressedAbbrv,
2046 unsigned SLocBufferBlobAbbrv) {
2047 typedef ASTWriter::RecordData::value_type RecordDataType;
2049 // Compress the buffer if possible. We expect that almost all PCM
2050 // consumers will not want its contents.
2051 SmallString<0> CompressedBuffer;
2052 if (llvm::zlib::isAvailable()) {
2053 llvm::Error E = llvm::zlib::compress(Blob.drop_back(1), CompressedBuffer);
2055 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB_COMPRESSED,
2057 Stream.EmitRecordWithBlob(SLocBufferBlobCompressedAbbrv, Record,
2061 llvm::consumeError(std::move(E));
2064 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB};
2065 Stream.EmitRecordWithBlob(SLocBufferBlobAbbrv, Record, Blob);
2068 /// \brief Writes the block containing the serialized form of the
2071 /// TODO: We should probably use an on-disk hash table (stored in a
2072 /// blob), indexed based on the file name, so that we only create
2073 /// entries for files that we actually need. In the common case (no
2074 /// errors), we probably won't have to create file entries for any of
2075 /// the files in the AST.
2076 void ASTWriter::WriteSourceManagerBlock(SourceManager &SourceMgr,
2077 const Preprocessor &PP) {
2080 // Enter the source manager block.
2081 Stream.EnterSubblock(SOURCE_MANAGER_BLOCK_ID, 4);
2083 // Abbreviations for the various kinds of source-location entries.
2084 unsigned SLocFileAbbrv = CreateSLocFileAbbrev(Stream);
2085 unsigned SLocBufferAbbrv = CreateSLocBufferAbbrev(Stream);
2086 unsigned SLocBufferBlobAbbrv = CreateSLocBufferBlobAbbrev(Stream, false);
2087 unsigned SLocBufferBlobCompressedAbbrv =
2088 CreateSLocBufferBlobAbbrev(Stream, true);
2089 unsigned SLocExpansionAbbrv = CreateSLocExpansionAbbrev(Stream);
2091 // Write out the source location entry table. We skip the first
2092 // entry, which is always the same dummy entry.
2093 std::vector<uint32_t> SLocEntryOffsets;
2094 RecordData PreloadSLocs;
2095 SLocEntryOffsets.reserve(SourceMgr.local_sloc_entry_size() - 1);
2096 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size();
2098 // Get this source location entry.
2099 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
2100 FileID FID = FileID::get(I);
2101 assert(&SourceMgr.getSLocEntry(FID) == SLoc);
2103 // Record the offset of this source-location entry.
2104 SLocEntryOffsets.push_back(Stream.GetCurrentBitNo());
2106 // Figure out which record code to use.
2108 if (SLoc->isFile()) {
2109 const SrcMgr::ContentCache *Cache = SLoc->getFile().getContentCache();
2110 if (Cache->OrigEntry) {
2111 Code = SM_SLOC_FILE_ENTRY;
2113 Code = SM_SLOC_BUFFER_ENTRY;
2115 Code = SM_SLOC_EXPANSION_ENTRY;
2117 Record.push_back(Code);
2119 // Starting offset of this entry within this module, so skip the dummy.
2120 Record.push_back(SLoc->getOffset() - 2);
2121 if (SLoc->isFile()) {
2122 const SrcMgr::FileInfo &File = SLoc->getFile();
2123 AddSourceLocation(File.getIncludeLoc(), Record);
2124 Record.push_back(File.getFileCharacteristic()); // FIXME: stable encoding
2125 Record.push_back(File.hasLineDirectives());
2127 const SrcMgr::ContentCache *Content = File.getContentCache();
2128 bool EmitBlob = false;
2129 if (Content->OrigEntry) {
2130 assert(Content->OrigEntry == Content->ContentsEntry &&
2131 "Writing to AST an overridden file is not supported");
2133 // The source location entry is a file. Emit input file ID.
2134 assert(InputFileIDs[Content->OrigEntry] != 0 && "Missed file entry");
2135 Record.push_back(InputFileIDs[Content->OrigEntry]);
2137 Record.push_back(File.NumCreatedFIDs);
2139 FileDeclIDsTy::iterator FDI = FileDeclIDs.find(FID);
2140 if (FDI != FileDeclIDs.end()) {
2141 Record.push_back(FDI->second->FirstDeclIndex);
2142 Record.push_back(FDI->second->DeclIDs.size());
2144 Record.push_back(0);
2145 Record.push_back(0);
2148 Stream.EmitRecordWithAbbrev(SLocFileAbbrv, Record);
2150 if (Content->BufferOverridden || Content->IsTransient)
2153 // The source location entry is a buffer. The blob associated
2154 // with this entry contains the contents of the buffer.
2156 // We add one to the size so that we capture the trailing NULL
2157 // that is required by llvm::MemoryBuffer::getMemBuffer (on
2158 // the reader side).
2159 const llvm::MemoryBuffer *Buffer
2160 = Content->getBuffer(PP.getDiagnostics(), PP.getSourceManager());
2161 StringRef Name = Buffer->getBufferIdentifier();
2162 Stream.EmitRecordWithBlob(SLocBufferAbbrv, Record,
2163 StringRef(Name.data(), Name.size() + 1));
2166 if (Name == "<built-in>")
2167 PreloadSLocs.push_back(SLocEntryOffsets.size());
2171 // Include the implicit terminating null character in the on-disk buffer
2172 // if we're writing it uncompressed.
2173 const llvm::MemoryBuffer *Buffer =
2174 Content->getBuffer(PP.getDiagnostics(), PP.getSourceManager());
2175 StringRef Blob(Buffer->getBufferStart(), Buffer->getBufferSize() + 1);
2176 emitBlob(Stream, Blob, SLocBufferBlobCompressedAbbrv,
2177 SLocBufferBlobAbbrv);
2180 // The source location entry is a macro expansion.
2181 const SrcMgr::ExpansionInfo &Expansion = SLoc->getExpansion();
2182 AddSourceLocation(Expansion.getSpellingLoc(), Record);
2183 AddSourceLocation(Expansion.getExpansionLocStart(), Record);
2184 AddSourceLocation(Expansion.isMacroArgExpansion()
2186 : Expansion.getExpansionLocEnd(),
2189 // Compute the token length for this macro expansion.
2190 unsigned NextOffset = SourceMgr.getNextLocalOffset();
2192 NextOffset = SourceMgr.getLocalSLocEntry(I + 1).getOffset();
2193 Record.push_back(NextOffset - SLoc->getOffset() - 1);
2194 Stream.EmitRecordWithAbbrev(SLocExpansionAbbrv, Record);
2200 if (SLocEntryOffsets.empty())
2203 // Write the source-location offsets table into the AST block. This
2204 // table is used for lazily loading source-location information.
2205 using namespace llvm;
2207 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2208 Abbrev->Add(BitCodeAbbrevOp(SOURCE_LOCATION_OFFSETS));
2209 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs
2210 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // total size
2211 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets
2212 unsigned SLocOffsetsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2214 RecordData::value_type Record[] = {
2215 SOURCE_LOCATION_OFFSETS, SLocEntryOffsets.size(),
2216 SourceMgr.getNextLocalOffset() - 1 /* skip dummy */};
2217 Stream.EmitRecordWithBlob(SLocOffsetsAbbrev, Record,
2218 bytes(SLocEntryOffsets));
2220 // Write the source location entry preloads array, telling the AST
2221 // reader which source locations entries it should load eagerly.
2222 Stream.EmitRecord(SOURCE_LOCATION_PRELOADS, PreloadSLocs);
2224 // Write the line table. It depends on remapping working, so it must come
2225 // after the source location offsets.
2226 if (SourceMgr.hasLineTable()) {
2227 LineTableInfo &LineTable = SourceMgr.getLineTable();
2231 // Emit the needed file names.
2232 llvm::DenseMap<int, int> FilenameMap;
2233 for (const auto &L : LineTable) {
2236 for (auto &LE : L.second) {
2237 if (FilenameMap.insert(std::make_pair(LE.FilenameID,
2238 FilenameMap.size())).second)
2239 AddPath(LineTable.getFilename(LE.FilenameID), Record);
2242 Record.push_back(0);
2244 // Emit the line entries
2245 for (const auto &L : LineTable) {
2246 // Only emit entries for local files.
2251 Record.push_back(L.first.ID);
2253 // Emit the line entries
2254 Record.push_back(L.second.size());
2255 for (const auto &LE : L.second) {
2256 Record.push_back(LE.FileOffset);
2257 Record.push_back(LE.LineNo);
2258 Record.push_back(FilenameMap[LE.FilenameID]);
2259 Record.push_back((unsigned)LE.FileKind);
2260 Record.push_back(LE.IncludeOffset);
2264 Stream.EmitRecord(SOURCE_MANAGER_LINE_TABLE, Record);
2268 //===----------------------------------------------------------------------===//
2269 // Preprocessor Serialization
2270 //===----------------------------------------------------------------------===//
2272 static bool shouldIgnoreMacro(MacroDirective *MD, bool IsModule,
2273 const Preprocessor &PP) {
2274 if (MacroInfo *MI = MD->getMacroInfo())
2275 if (MI->isBuiltinMacro())
2279 SourceLocation Loc = MD->getLocation();
2280 if (Loc.isInvalid())
2282 if (PP.getSourceManager().getFileID(Loc) == PP.getPredefinesFileID())
2289 /// \brief Writes the block containing the serialized form of the
2292 void ASTWriter::WritePreprocessor(const Preprocessor &PP, bool IsModule) {
2293 PreprocessingRecord *PPRec = PP.getPreprocessingRecord();
2295 WritePreprocessorDetail(*PPRec);
2298 RecordData ModuleMacroRecord;
2300 // If the preprocessor __COUNTER__ value has been bumped, remember it.
2301 if (PP.getCounterValue() != 0) {
2302 RecordData::value_type Record[] = {PP.getCounterValue()};
2303 Stream.EmitRecord(PP_COUNTER_VALUE, Record);
2306 if (PP.isRecordingPreamble() && PP.hasRecordedPreamble()) {
2308 for (const auto &Cond : PP.getPreambleConditionalStack()) {
2309 AddSourceLocation(Cond.IfLoc, Record);
2310 Record.push_back(Cond.WasSkipping);
2311 Record.push_back(Cond.FoundNonSkip);
2312 Record.push_back(Cond.FoundElse);
2314 Stream.EmitRecord(PP_CONDITIONAL_STACK, Record);
2318 // Enter the preprocessor block.
2319 Stream.EnterSubblock(PREPROCESSOR_BLOCK_ID, 3);
2321 // If the AST file contains __DATE__ or __TIME__ emit a warning about this.
2322 // FIXME: Include a location for the use, and say which one was used.
2323 if (PP.SawDateOrTime())
2324 PP.Diag(SourceLocation(), diag::warn_module_uses_date_time) << IsModule;
2326 // Loop over all the macro directives that are live at the end of the file,
2327 // emitting each to the PP section.
2329 // Construct the list of identifiers with macro directives that need to be
2331 SmallVector<const IdentifierInfo *, 128> MacroIdentifiers;
2332 for (auto &Id : PP.getIdentifierTable())
2333 if (Id.second->hadMacroDefinition() &&
2334 (!Id.second->isFromAST() ||
2335 Id.second->hasChangedSinceDeserialization()))
2336 MacroIdentifiers.push_back(Id.second);
2337 // Sort the set of macro definitions that need to be serialized by the
2338 // name of the macro, to provide a stable ordering.
2339 std::sort(MacroIdentifiers.begin(), MacroIdentifiers.end(),
2340 llvm::less_ptr<IdentifierInfo>());
2342 // Emit the macro directives as a list and associate the offset with the
2343 // identifier they belong to.
2344 for (const IdentifierInfo *Name : MacroIdentifiers) {
2345 MacroDirective *MD = PP.getLocalMacroDirectiveHistory(Name);
2346 auto StartOffset = Stream.GetCurrentBitNo();
2348 // Emit the macro directives in reverse source order.
2349 for (; MD; MD = MD->getPrevious()) {
2350 // Once we hit an ignored macro, we're done: the rest of the chain
2351 // will all be ignored macros.
2352 if (shouldIgnoreMacro(MD, IsModule, PP))
2355 AddSourceLocation(MD->getLocation(), Record);
2356 Record.push_back(MD->getKind());
2357 if (auto *DefMD = dyn_cast<DefMacroDirective>(MD)) {
2358 Record.push_back(getMacroRef(DefMD->getInfo(), Name));
2359 } else if (auto *VisMD = dyn_cast<VisibilityMacroDirective>(MD)) {
2360 Record.push_back(VisMD->isPublic());
2364 // Write out any exported module macros.
2365 bool EmittedModuleMacros = false;
2366 // We write out exported module macros for PCH as well.
2367 auto Leafs = PP.getLeafModuleMacros(Name);
2368 SmallVector<ModuleMacro*, 8> Worklist(Leafs.begin(), Leafs.end());
2369 llvm::DenseMap<ModuleMacro*, unsigned> Visits;
2370 while (!Worklist.empty()) {
2371 auto *Macro = Worklist.pop_back_val();
2373 // Emit a record indicating this submodule exports this macro.
2374 ModuleMacroRecord.push_back(
2375 getSubmoduleID(Macro->getOwningModule()));
2376 ModuleMacroRecord.push_back(getMacroRef(Macro->getMacroInfo(), Name));
2377 for (auto *M : Macro->overrides())
2378 ModuleMacroRecord.push_back(getSubmoduleID(M->getOwningModule()));
2380 Stream.EmitRecord(PP_MODULE_MACRO, ModuleMacroRecord);
2381 ModuleMacroRecord.clear();
2383 // Enqueue overridden macros once we've visited all their ancestors.
2384 for (auto *M : Macro->overrides())
2385 if (++Visits[M] == M->getNumOverridingMacros())
2386 Worklist.push_back(M);
2388 EmittedModuleMacros = true;
2391 if (Record.empty() && !EmittedModuleMacros)
2394 IdentMacroDirectivesOffsetMap[Name] = StartOffset;
2395 Stream.EmitRecord(PP_MACRO_DIRECTIVE_HISTORY, Record);
2399 /// \brief Offsets of each of the macros into the bitstream, indexed by
2400 /// the local macro ID
2402 /// For each identifier that is associated with a macro, this map
2403 /// provides the offset into the bitstream where that macro is
2405 std::vector<uint32_t> MacroOffsets;
2407 for (unsigned I = 0, N = MacroInfosToEmit.size(); I != N; ++I) {
2408 const IdentifierInfo *Name = MacroInfosToEmit[I].Name;
2409 MacroInfo *MI = MacroInfosToEmit[I].MI;
2410 MacroID ID = MacroInfosToEmit[I].ID;
2412 if (ID < FirstMacroID) {
2413 assert(0 && "Loaded MacroInfo entered MacroInfosToEmit ?");
2417 // Record the local offset of this macro.
2418 unsigned Index = ID - FirstMacroID;
2419 if (Index == MacroOffsets.size())
2420 MacroOffsets.push_back(Stream.GetCurrentBitNo());
2422 if (Index > MacroOffsets.size())
2423 MacroOffsets.resize(Index + 1);
2425 MacroOffsets[Index] = Stream.GetCurrentBitNo();
2428 AddIdentifierRef(Name, Record);
2429 AddSourceLocation(MI->getDefinitionLoc(), Record);
2430 AddSourceLocation(MI->getDefinitionEndLoc(), Record);
2431 Record.push_back(MI->isUsed());
2432 Record.push_back(MI->isUsedForHeaderGuard());
2434 if (MI->isObjectLike()) {
2435 Code = PP_MACRO_OBJECT_LIKE;
2437 Code = PP_MACRO_FUNCTION_LIKE;
2439 Record.push_back(MI->isC99Varargs());
2440 Record.push_back(MI->isGNUVarargs());
2441 Record.push_back(MI->hasCommaPasting());
2442 Record.push_back(MI->getNumArgs());
2443 for (const IdentifierInfo *Arg : MI->args())
2444 AddIdentifierRef(Arg, Record);
2447 // If we have a detailed preprocessing record, record the macro definition
2448 // ID that corresponds to this macro.
2450 Record.push_back(MacroDefinitions[PPRec->findMacroDefinition(MI)]);
2452 Stream.EmitRecord(Code, Record);
2455 // Emit the tokens array.
2456 for (unsigned TokNo = 0, e = MI->getNumTokens(); TokNo != e; ++TokNo) {
2457 // Note that we know that the preprocessor does not have any annotation
2458 // tokens in it because they are created by the parser, and thus can't
2459 // be in a macro definition.
2460 const Token &Tok = MI->getReplacementToken(TokNo);
2461 AddToken(Tok, Record);
2462 Stream.EmitRecord(PP_TOKEN, Record);
2470 // Write the offsets table for macro IDs.
2471 using namespace llvm;
2473 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2474 Abbrev->Add(BitCodeAbbrevOp(MACRO_OFFSET));
2475 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of macros
2476 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
2477 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2479 unsigned MacroOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2481 RecordData::value_type Record[] = {MACRO_OFFSET, MacroOffsets.size(),
2482 FirstMacroID - NUM_PREDEF_MACRO_IDS};
2483 Stream.EmitRecordWithBlob(MacroOffsetAbbrev, Record, bytes(MacroOffsets));
2487 void ASTWriter::WritePreprocessorDetail(PreprocessingRecord &PPRec) {
2488 if (PPRec.local_begin() == PPRec.local_end())
2491 SmallVector<PPEntityOffset, 64> PreprocessedEntityOffsets;
2493 // Enter the preprocessor block.
2494 Stream.EnterSubblock(PREPROCESSOR_DETAIL_BLOCK_ID, 3);
2496 // If the preprocessor has a preprocessing record, emit it.
2497 unsigned NumPreprocessingRecords = 0;
2498 using namespace llvm;
2500 // Set up the abbreviation for
2501 unsigned InclusionAbbrev = 0;
2503 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2504 Abbrev->Add(BitCodeAbbrevOp(PPD_INCLUSION_DIRECTIVE));
2505 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // filename length
2506 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // in quotes
2507 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // kind
2508 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // imported module
2509 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2510 InclusionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2513 unsigned FirstPreprocessorEntityID
2514 = (Chain ? PPRec.getNumLoadedPreprocessedEntities() : 0)
2515 + NUM_PREDEF_PP_ENTITY_IDS;
2516 unsigned NextPreprocessorEntityID = FirstPreprocessorEntityID;
2518 for (PreprocessingRecord::iterator E = PPRec.local_begin(),
2519 EEnd = PPRec.local_end();
2521 (void)++E, ++NumPreprocessingRecords, ++NextPreprocessorEntityID) {
2524 PreprocessedEntityOffsets.push_back(
2525 PPEntityOffset((*E)->getSourceRange(), Stream.GetCurrentBitNo()));
2527 if (auto *MD = dyn_cast<MacroDefinitionRecord>(*E)) {
2528 // Record this macro definition's ID.
2529 MacroDefinitions[MD] = NextPreprocessorEntityID;
2531 AddIdentifierRef(MD->getName(), Record);
2532 Stream.EmitRecord(PPD_MACRO_DEFINITION, Record);
2536 if (auto *ME = dyn_cast<MacroExpansion>(*E)) {
2537 Record.push_back(ME->isBuiltinMacro());
2538 if (ME->isBuiltinMacro())
2539 AddIdentifierRef(ME->getName(), Record);
2541 Record.push_back(MacroDefinitions[ME->getDefinition()]);
2542 Stream.EmitRecord(PPD_MACRO_EXPANSION, Record);
2546 if (auto *ID = dyn_cast<InclusionDirective>(*E)) {
2547 Record.push_back(PPD_INCLUSION_DIRECTIVE);
2548 Record.push_back(ID->getFileName().size());
2549 Record.push_back(ID->wasInQuotes());
2550 Record.push_back(static_cast<unsigned>(ID->getKind()));
2551 Record.push_back(ID->importedModule());
2552 SmallString<64> Buffer;
2553 Buffer += ID->getFileName();
2554 // Check that the FileEntry is not null because it was not resolved and
2555 // we create a PCH even with compiler errors.
2557 Buffer += ID->getFile()->getName();
2558 Stream.EmitRecordWithBlob(InclusionAbbrev, Record, Buffer);
2562 llvm_unreachable("Unhandled PreprocessedEntity in ASTWriter");
2566 // Write the offsets table for the preprocessing record.
2567 if (NumPreprocessingRecords > 0) {
2568 assert(PreprocessedEntityOffsets.size() == NumPreprocessingRecords);
2570 // Write the offsets table for identifier IDs.
2571 using namespace llvm;
2573 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2574 Abbrev->Add(BitCodeAbbrevOp(PPD_ENTITIES_OFFSETS));
2575 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first pp entity
2576 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2577 unsigned PPEOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2579 RecordData::value_type Record[] = {PPD_ENTITIES_OFFSETS,
2580 FirstPreprocessorEntityID -
2581 NUM_PREDEF_PP_ENTITY_IDS};
2582 Stream.EmitRecordWithBlob(PPEOffsetAbbrev, Record,
2583 bytes(PreprocessedEntityOffsets));
2587 unsigned ASTWriter::getLocalOrImportedSubmoduleID(Module *Mod) {
2591 llvm::DenseMap<Module *, unsigned>::iterator Known = SubmoduleIDs.find(Mod);
2592 if (Known != SubmoduleIDs.end())
2593 return Known->second;
2595 auto *Top = Mod->getTopLevelModule();
2596 if (Top != WritingModule &&
2597 (getLangOpts().CompilingPCH ||
2598 !Top->fullModuleNameIs(StringRef(getLangOpts().CurrentModule))))
2601 return SubmoduleIDs[Mod] = NextSubmoduleID++;
2604 unsigned ASTWriter::getSubmoduleID(Module *Mod) {
2605 // FIXME: This can easily happen, if we have a reference to a submodule that
2606 // did not result in us loading a module file for that submodule. For
2607 // instance, a cross-top-level-module 'conflict' declaration will hit this.
2608 unsigned ID = getLocalOrImportedSubmoduleID(Mod);
2609 assert((ID || !Mod) &&
2610 "asked for module ID for non-local, non-imported module");
2614 /// \brief Compute the number of modules within the given tree (including the
2616 static unsigned getNumberOfModules(Module *Mod) {
2617 unsigned ChildModules = 0;
2618 for (auto Sub = Mod->submodule_begin(), SubEnd = Mod->submodule_end();
2619 Sub != SubEnd; ++Sub)
2620 ChildModules += getNumberOfModules(*Sub);
2622 return ChildModules + 1;
2625 void ASTWriter::WriteSubmodules(Module *WritingModule) {
2626 // Enter the submodule description block.
2627 Stream.EnterSubblock(SUBMODULE_BLOCK_ID, /*bits for abbreviations*/5);
2629 // Write the abbreviations needed for the submodules block.
2630 using namespace llvm;
2632 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2633 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_DEFINITION));
2634 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
2635 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Parent
2636 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2637 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExplicit
2638 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsSystem
2639 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExternC
2640 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferSubmodules...
2641 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExplicit...
2642 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExportWild...
2643 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ConfigMacrosExh...
2644 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2645 unsigned DefinitionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2647 Abbrev = std::make_shared<BitCodeAbbrev>();
2648 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_HEADER));
2649 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2650 unsigned UmbrellaAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2652 Abbrev = std::make_shared<BitCodeAbbrev>();
2653 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_HEADER));
2654 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2655 unsigned HeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2657 Abbrev = std::make_shared<BitCodeAbbrev>();
2658 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TOPHEADER));
2659 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2660 unsigned TopHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2662 Abbrev = std::make_shared<BitCodeAbbrev>();
2663 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_DIR));
2664 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2665 unsigned UmbrellaDirAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2667 Abbrev = std::make_shared<BitCodeAbbrev>();
2668 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_REQUIRES));
2669 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // State
2670 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Feature
2671 unsigned RequiresAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2673 Abbrev = std::make_shared<BitCodeAbbrev>();
2674 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXCLUDED_HEADER));
2675 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2676 unsigned ExcludedHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2678 Abbrev = std::make_shared<BitCodeAbbrev>();
2679 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TEXTUAL_HEADER));
2680 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2681 unsigned TextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2683 Abbrev = std::make_shared<BitCodeAbbrev>();
2684 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_HEADER));
2685 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2686 unsigned PrivateHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2688 Abbrev = std::make_shared<BitCodeAbbrev>();
2689 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_TEXTUAL_HEADER));
2690 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2691 unsigned PrivateTextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2693 Abbrev = std::make_shared<BitCodeAbbrev>();
2694 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_LINK_LIBRARY));
2695 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2696 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2697 unsigned LinkLibraryAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2699 Abbrev = std::make_shared<BitCodeAbbrev>();
2700 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFIG_MACRO));
2701 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2702 unsigned ConfigMacroAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2704 Abbrev = std::make_shared<BitCodeAbbrev>();
2705 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFLICT));
2706 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Other module
2707 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Message
2708 unsigned ConflictAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2710 // Write the submodule metadata block.
2711 RecordData::value_type Record[] = {
2712 getNumberOfModules(WritingModule),
2713 FirstSubmoduleID - NUM_PREDEF_SUBMODULE_IDS,
2714 (unsigned)WritingModule->Kind};
2715 Stream.EmitRecord(SUBMODULE_METADATA, Record);
2717 // Write all of the submodules.
2718 std::queue<Module *> Q;
2719 Q.push(WritingModule);
2720 while (!Q.empty()) {
2721 Module *Mod = Q.front();
2723 unsigned ID = getSubmoduleID(Mod);
2725 uint64_t ParentID = 0;
2727 assert(SubmoduleIDs[Mod->Parent] && "Submodule parent not written?");
2728 ParentID = SubmoduleIDs[Mod->Parent];
2731 // Emit the definition of the block.
2733 RecordData::value_type Record[] = {SUBMODULE_DEFINITION,
2740 Mod->InferSubmodules,
2741 Mod->InferExplicitSubmodules,
2742 Mod->InferExportWildcard,
2743 Mod->ConfigMacrosExhaustive};
2744 Stream.EmitRecordWithBlob(DefinitionAbbrev, Record, Mod->Name);
2747 // Emit the requirements.
2748 for (const auto &R : Mod->Requirements) {
2749 RecordData::value_type Record[] = {SUBMODULE_REQUIRES, R.second};
2750 Stream.EmitRecordWithBlob(RequiresAbbrev, Record, R.first);
2753 // Emit the umbrella header, if there is one.
2754 if (auto UmbrellaHeader = Mod->getUmbrellaHeader()) {
2755 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_HEADER};
2756 Stream.EmitRecordWithBlob(UmbrellaAbbrev, Record,
2757 UmbrellaHeader.NameAsWritten);
2758 } else if (auto UmbrellaDir = Mod->getUmbrellaDir()) {
2759 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_DIR};
2760 Stream.EmitRecordWithBlob(UmbrellaDirAbbrev, Record,
2761 UmbrellaDir.NameAsWritten);
2764 // Emit the headers.
2766 unsigned RecordKind;
2768 Module::HeaderKind HeaderKind;
2770 {SUBMODULE_HEADER, HeaderAbbrev, Module::HK_Normal},
2771 {SUBMODULE_TEXTUAL_HEADER, TextualHeaderAbbrev, Module::HK_Textual},
2772 {SUBMODULE_PRIVATE_HEADER, PrivateHeaderAbbrev, Module::HK_Private},
2773 {SUBMODULE_PRIVATE_TEXTUAL_HEADER, PrivateTextualHeaderAbbrev,
2774 Module::HK_PrivateTextual},
2775 {SUBMODULE_EXCLUDED_HEADER, ExcludedHeaderAbbrev, Module::HK_Excluded}
2777 for (auto &HL : HeaderLists) {
2778 RecordData::value_type Record[] = {HL.RecordKind};
2779 for (auto &H : Mod->Headers[HL.HeaderKind])
2780 Stream.EmitRecordWithBlob(HL.Abbrev, Record, H.NameAsWritten);
2783 // Emit the top headers.
2785 auto TopHeaders = Mod->getTopHeaders(PP->getFileManager());
2786 RecordData::value_type Record[] = {SUBMODULE_TOPHEADER};
2787 for (auto *H : TopHeaders)
2788 Stream.EmitRecordWithBlob(TopHeaderAbbrev, Record, H->getName());
2791 // Emit the imports.
2792 if (!Mod->Imports.empty()) {
2794 for (auto *I : Mod->Imports)
2795 Record.push_back(getSubmoduleID(I));
2796 Stream.EmitRecord(SUBMODULE_IMPORTS, Record);
2799 // Emit the exports.
2800 if (!Mod->Exports.empty()) {
2802 for (const auto &E : Mod->Exports) {
2803 // FIXME: This may fail; we don't require that all exported modules
2804 // are local or imported.
2805 Record.push_back(getSubmoduleID(E.getPointer()));
2806 Record.push_back(E.getInt());
2808 Stream.EmitRecord(SUBMODULE_EXPORTS, Record);
2811 //FIXME: How do we emit the 'use'd modules? They may not be submodules.
2812 // Might be unnecessary as use declarations are only used to build the
2815 // Emit the link libraries.
2816 for (const auto &LL : Mod->LinkLibraries) {
2817 RecordData::value_type Record[] = {SUBMODULE_LINK_LIBRARY,
2819 Stream.EmitRecordWithBlob(LinkLibraryAbbrev, Record, LL.Library);
2822 // Emit the conflicts.
2823 for (const auto &C : Mod->Conflicts) {
2824 // FIXME: This may fail; we don't require that all conflicting modules
2825 // are local or imported.
2826 RecordData::value_type Record[] = {SUBMODULE_CONFLICT,
2827 getSubmoduleID(C.Other)};
2828 Stream.EmitRecordWithBlob(ConflictAbbrev, Record, C.Message);
2831 // Emit the configuration macros.
2832 for (const auto &CM : Mod->ConfigMacros) {
2833 RecordData::value_type Record[] = {SUBMODULE_CONFIG_MACRO};
2834 Stream.EmitRecordWithBlob(ConfigMacroAbbrev, Record, CM);
2837 // Emit the initializers, if any.
2839 for (Decl *D : Context->getModuleInitializers(Mod))
2840 Inits.push_back(GetDeclRef(D));
2842 Stream.EmitRecord(SUBMODULE_INITIALIZERS, Inits);
2844 // Queue up the submodules of this module.
2845 for (auto *M : Mod->submodules())
2851 assert((NextSubmoduleID - FirstSubmoduleID ==
2852 getNumberOfModules(WritingModule)) &&
2853 "Wrong # of submodules; found a reference to a non-local, "
2854 "non-imported submodule?");
2857 void ASTWriter::WritePragmaDiagnosticMappings(const DiagnosticsEngine &Diag,
2859 llvm::SmallDenseMap<const DiagnosticsEngine::DiagState *, unsigned, 64>
2861 unsigned CurrID = 0;
2864 auto EncodeDiagStateFlags =
2865 [](const DiagnosticsEngine::DiagState *DS) -> unsigned {
2866 unsigned Result = (unsigned)DS->ExtBehavior;
2868 {(unsigned)DS->IgnoreAllWarnings, (unsigned)DS->EnableAllWarnings,
2869 (unsigned)DS->WarningsAsErrors, (unsigned)DS->ErrorsAsFatal,
2870 (unsigned)DS->SuppressSystemWarnings})
2871 Result = (Result << 1) | Val;
2875 unsigned Flags = EncodeDiagStateFlags(Diag.DiagStatesByLoc.FirstDiagState);
2876 Record.push_back(Flags);
2878 auto AddDiagState = [&](const DiagnosticsEngine::DiagState *State,
2879 bool IncludeNonPragmaStates) {
2880 // Ensure that the diagnostic state wasn't modified since it was created.
2881 // We will not correctly round-trip this information otherwise.
2882 assert(Flags == EncodeDiagStateFlags(State) &&
2883 "diag state flags vary in single AST file");
2885 unsigned &DiagStateID = DiagStateIDMap[State];
2886 Record.push_back(DiagStateID);
2888 if (DiagStateID == 0) {
2889 DiagStateID = ++CurrID;
2891 // Add a placeholder for the number of mappings.
2892 auto SizeIdx = Record.size();
2893 Record.emplace_back();
2894 for (const auto &I : *State) {
2895 if (I.second.isPragma() || IncludeNonPragmaStates) {
2896 Record.push_back(I.first);
2897 Record.push_back(I.second.serialize());
2900 // Update the placeholder.
2901 Record[SizeIdx] = (Record.size() - SizeIdx) / 2;
2905 AddDiagState(Diag.DiagStatesByLoc.FirstDiagState, isModule);
2907 // Reserve a spot for the number of locations with state transitions.
2908 auto NumLocationsIdx = Record.size();
2909 Record.emplace_back();
2911 // Emit the state transitions.
2912 unsigned NumLocations = 0;
2913 for (auto &FileIDAndFile : Diag.DiagStatesByLoc.Files) {
2914 if (!FileIDAndFile.first.isValid() ||
2915 !FileIDAndFile.second.HasLocalTransitions)
2918 AddSourceLocation(Diag.SourceMgr->getLocForStartOfFile(FileIDAndFile.first),
2920 Record.push_back(FileIDAndFile.second.StateTransitions.size());
2921 for (auto &StatePoint : FileIDAndFile.second.StateTransitions) {
2922 Record.push_back(StatePoint.Offset);
2923 AddDiagState(StatePoint.State, false);
2927 // Backpatch the number of locations.
2928 Record[NumLocationsIdx] = NumLocations;
2930 // Emit CurDiagStateLoc. Do it last in order to match source order.
2932 // This also protects against a hypothetical corner case with simulating
2933 // -Werror settings for implicit modules in the ASTReader, where reading
2934 // CurDiagState out of context could change whether warning pragmas are
2935 // treated as errors.
2936 AddSourceLocation(Diag.DiagStatesByLoc.CurDiagStateLoc, Record);
2937 AddDiagState(Diag.DiagStatesByLoc.CurDiagState, false);
2939 Stream.EmitRecord(DIAG_PRAGMA_MAPPINGS, Record);
2942 //===----------------------------------------------------------------------===//
2943 // Type Serialization
2944 //===----------------------------------------------------------------------===//
2946 /// \brief Write the representation of a type to the AST stream.
2947 void ASTWriter::WriteType(QualType T) {
2948 TypeIdx &IdxRef = TypeIdxs[T];
2949 if (IdxRef.getIndex() == 0) // we haven't seen this type before.
2950 IdxRef = TypeIdx(NextTypeID++);
2951 TypeIdx Idx = IdxRef;
2953 assert(Idx.getIndex() >= FirstTypeID && "Re-writing a type from a prior AST");
2957 // Emit the type's representation.
2958 ASTTypeWriter W(*this, Record);
2960 uint64_t Offset = W.Emit();
2962 // Record the offset for this type.
2963 unsigned Index = Idx.getIndex() - FirstTypeID;
2964 if (TypeOffsets.size() == Index)
2965 TypeOffsets.push_back(Offset);
2966 else if (TypeOffsets.size() < Index) {
2967 TypeOffsets.resize(Index + 1);
2968 TypeOffsets[Index] = Offset;
2970 llvm_unreachable("Types emitted in wrong order");
2974 //===----------------------------------------------------------------------===//
2975 // Declaration Serialization
2976 //===----------------------------------------------------------------------===//
2978 /// \brief Write the block containing all of the declaration IDs
2979 /// lexically declared within the given DeclContext.
2981 /// \returns the offset of the DECL_CONTEXT_LEXICAL block within the
2982 /// bistream, or 0 if no block was written.
2983 uint64_t ASTWriter::WriteDeclContextLexicalBlock(ASTContext &Context,
2985 if (DC->decls_empty())
2988 uint64_t Offset = Stream.GetCurrentBitNo();
2989 SmallVector<uint32_t, 128> KindDeclPairs;
2990 for (const auto *D : DC->decls()) {
2991 KindDeclPairs.push_back(D->getKind());
2992 KindDeclPairs.push_back(GetDeclRef(D));
2995 ++NumLexicalDeclContexts;
2996 RecordData::value_type Record[] = {DECL_CONTEXT_LEXICAL};
2997 Stream.EmitRecordWithBlob(DeclContextLexicalAbbrev, Record,
2998 bytes(KindDeclPairs));
3002 void ASTWriter::WriteTypeDeclOffsets() {
3003 using namespace llvm;
3005 // Write the type offsets array
3006 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3007 Abbrev->Add(BitCodeAbbrevOp(TYPE_OFFSET));
3008 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of types
3009 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base type index
3010 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // types block
3011 unsigned TypeOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3013 RecordData::value_type Record[] = {TYPE_OFFSET, TypeOffsets.size(),
3014 FirstTypeID - NUM_PREDEF_TYPE_IDS};
3015 Stream.EmitRecordWithBlob(TypeOffsetAbbrev, Record, bytes(TypeOffsets));
3018 // Write the declaration offsets array
3019 Abbrev = std::make_shared<BitCodeAbbrev>();
3020 Abbrev->Add(BitCodeAbbrevOp(DECL_OFFSET));
3021 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of declarations
3022 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base decl ID
3023 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // declarations block
3024 unsigned DeclOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3026 RecordData::value_type Record[] = {DECL_OFFSET, DeclOffsets.size(),
3027 FirstDeclID - NUM_PREDEF_DECL_IDS};
3028 Stream.EmitRecordWithBlob(DeclOffsetAbbrev, Record, bytes(DeclOffsets));
3032 void ASTWriter::WriteFileDeclIDsMap() {
3033 using namespace llvm;
3035 SmallVector<std::pair<FileID, DeclIDInFileInfo *>, 64> SortedFileDeclIDs(
3036 FileDeclIDs.begin(), FileDeclIDs.end());
3037 std::sort(SortedFileDeclIDs.begin(), SortedFileDeclIDs.end(),
3038 llvm::less_first());
3040 // Join the vectors of DeclIDs from all files.
3041 SmallVector<DeclID, 256> FileGroupedDeclIDs;
3042 for (auto &FileDeclEntry : SortedFileDeclIDs) {
3043 DeclIDInFileInfo &Info = *FileDeclEntry.second;
3044 Info.FirstDeclIndex = FileGroupedDeclIDs.size();
3045 for (auto &LocDeclEntry : Info.DeclIDs)
3046 FileGroupedDeclIDs.push_back(LocDeclEntry.second);
3049 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3050 Abbrev->Add(BitCodeAbbrevOp(FILE_SORTED_DECLS));
3051 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3052 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3053 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
3054 RecordData::value_type Record[] = {FILE_SORTED_DECLS,
3055 FileGroupedDeclIDs.size()};
3056 Stream.EmitRecordWithBlob(AbbrevCode, Record, bytes(FileGroupedDeclIDs));
3059 void ASTWriter::WriteComments() {
3060 Stream.EnterSubblock(COMMENTS_BLOCK_ID, 3);
3061 ArrayRef<RawComment *> RawComments = Context->Comments.getComments();
3063 for (const auto *I : RawComments) {
3065 AddSourceRange(I->getSourceRange(), Record);
3066 Record.push_back(I->getKind());
3067 Record.push_back(I->isTrailingComment());
3068 Record.push_back(I->isAlmostTrailingComment());
3069 Stream.EmitRecord(COMMENTS_RAW_COMMENT, Record);
3074 //===----------------------------------------------------------------------===//
3075 // Global Method Pool and Selector Serialization
3076 //===----------------------------------------------------------------------===//
3080 // Trait used for the on-disk hash table used in the method pool.
3081 class ASTMethodPoolTrait {
3085 typedef Selector key_type;
3086 typedef key_type key_type_ref;
3090 ObjCMethodList Instance, Factory;
3092 typedef const data_type& data_type_ref;
3094 typedef unsigned hash_value_type;
3095 typedef unsigned offset_type;
3097 explicit ASTMethodPoolTrait(ASTWriter &Writer) : Writer(Writer) { }
3099 static hash_value_type ComputeHash(Selector Sel) {
3100 return serialization::ComputeHash(Sel);
3103 std::pair<unsigned,unsigned>
3104 EmitKeyDataLength(raw_ostream& Out, Selector Sel,
3105 data_type_ref Methods) {
3106 using namespace llvm::support;
3107 endian::Writer<little> LE(Out);
3108 unsigned KeyLen = 2 + (Sel.getNumArgs()? Sel.getNumArgs() * 4 : 4);
3109 LE.write<uint16_t>(KeyLen);
3110 unsigned DataLen = 4 + 2 + 2; // 2 bytes for each of the method counts
3111 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3112 Method = Method->getNext())
3113 if (Method->getMethod())
3115 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3116 Method = Method->getNext())
3117 if (Method->getMethod())
3119 LE.write<uint16_t>(DataLen);
3120 return std::make_pair(KeyLen, DataLen);
3123 void EmitKey(raw_ostream& Out, Selector Sel, unsigned) {
3124 using namespace llvm::support;
3125 endian::Writer<little> LE(Out);
3126 uint64_t Start = Out.tell();
3127 assert((Start >> 32) == 0 && "Selector key offset too large");
3128 Writer.SetSelectorOffset(Sel, Start);
3129 unsigned N = Sel.getNumArgs();
3130 LE.write<uint16_t>(N);
3133 for (unsigned I = 0; I != N; ++I)
3135 Writer.getIdentifierRef(Sel.getIdentifierInfoForSlot(I)));
3138 void EmitData(raw_ostream& Out, key_type_ref,
3139 data_type_ref Methods, unsigned DataLen) {
3140 using namespace llvm::support;
3141 endian::Writer<little> LE(Out);
3142 uint64_t Start = Out.tell(); (void)Start;
3143 LE.write<uint32_t>(Methods.ID);
3144 unsigned NumInstanceMethods = 0;
3145 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3146 Method = Method->getNext())
3147 if (Method->getMethod())
3148 ++NumInstanceMethods;
3150 unsigned NumFactoryMethods = 0;
3151 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3152 Method = Method->getNext())
3153 if (Method->getMethod())
3154 ++NumFactoryMethods;
3156 unsigned InstanceBits = Methods.Instance.getBits();
3157 assert(InstanceBits < 4);
3158 unsigned InstanceHasMoreThanOneDeclBit =
3159 Methods.Instance.hasMoreThanOneDecl();
3160 unsigned FullInstanceBits = (NumInstanceMethods << 3) |
3161 (InstanceHasMoreThanOneDeclBit << 2) |
3163 unsigned FactoryBits = Methods.Factory.getBits();
3164 assert(FactoryBits < 4);
3165 unsigned FactoryHasMoreThanOneDeclBit =
3166 Methods.Factory.hasMoreThanOneDecl();
3167 unsigned FullFactoryBits = (NumFactoryMethods << 3) |
3168 (FactoryHasMoreThanOneDeclBit << 2) |
3170 LE.write<uint16_t>(FullInstanceBits);
3171 LE.write<uint16_t>(FullFactoryBits);
3172 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3173 Method = Method->getNext())
3174 if (Method->getMethod())
3175 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3176 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3177 Method = Method->getNext())
3178 if (Method->getMethod())
3179 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3181 assert(Out.tell() - Start == DataLen && "Data length is wrong");
3185 } // end anonymous namespace
3187 /// \brief Write ObjC data: selectors and the method pool.
3189 /// The method pool contains both instance and factory methods, stored
3190 /// in an on-disk hash table indexed by the selector. The hash table also
3191 /// contains an empty entry for every other selector known to Sema.
3192 void ASTWriter::WriteSelectors(Sema &SemaRef) {
3193 using namespace llvm;
3195 // Do we have to do anything at all?
3196 if (SemaRef.MethodPool.empty() && SelectorIDs.empty())
3198 unsigned NumTableEntries = 0;
3199 // Create and write out the blob that contains selectors and the method pool.
3201 llvm::OnDiskChainedHashTableGenerator<ASTMethodPoolTrait> Generator;
3202 ASTMethodPoolTrait Trait(*this);
3204 // Create the on-disk hash table representation. We walk through every
3205 // selector we've seen and look it up in the method pool.
3206 SelectorOffsets.resize(NextSelectorID - FirstSelectorID);
3207 for (auto &SelectorAndID : SelectorIDs) {
3208 Selector S = SelectorAndID.first;
3209 SelectorID ID = SelectorAndID.second;
3210 Sema::GlobalMethodPool::iterator F = SemaRef.MethodPool.find(S);
3211 ASTMethodPoolTrait::data_type Data = {
3216 if (F != SemaRef.MethodPool.end()) {
3217 Data.Instance = F->second.first;
3218 Data.Factory = F->second.second;
3220 // Only write this selector if it's not in an existing AST or something
3222 if (Chain && ID < FirstSelectorID) {
3223 // Selector already exists. Did it change?
3224 bool changed = false;
3225 for (ObjCMethodList *M = &Data.Instance;
3226 !changed && M && M->getMethod(); M = M->getNext()) {
3227 if (!M->getMethod()->isFromASTFile())
3230 for (ObjCMethodList *M = &Data.Factory; !changed && M && M->getMethod();
3232 if (!M->getMethod()->isFromASTFile())
3237 } else if (Data.Instance.getMethod() || Data.Factory.getMethod()) {
3238 // A new method pool entry.
3241 Generator.insert(S, Data, Trait);
3244 // Create the on-disk hash table in a buffer.
3245 SmallString<4096> MethodPool;
3246 uint32_t BucketOffset;
3248 using namespace llvm::support;
3249 ASTMethodPoolTrait Trait(*this);
3250 llvm::raw_svector_ostream Out(MethodPool);
3251 // Make sure that no bucket is at offset 0
3252 endian::Writer<little>(Out).write<uint32_t>(0);
3253 BucketOffset = Generator.Emit(Out, Trait);
3256 // Create a blob abbreviation
3257 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3258 Abbrev->Add(BitCodeAbbrevOp(METHOD_POOL));
3259 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3260 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3261 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3262 unsigned MethodPoolAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3264 // Write the method pool
3266 RecordData::value_type Record[] = {METHOD_POOL, BucketOffset,
3268 Stream.EmitRecordWithBlob(MethodPoolAbbrev, Record, MethodPool);
3271 // Create a blob abbreviation for the selector table offsets.
3272 Abbrev = std::make_shared<BitCodeAbbrev>();
3273 Abbrev->Add(BitCodeAbbrevOp(SELECTOR_OFFSETS));
3274 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size
3275 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3276 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3277 unsigned SelectorOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3279 // Write the selector offsets table.
3281 RecordData::value_type Record[] = {
3282 SELECTOR_OFFSETS, SelectorOffsets.size(),
3283 FirstSelectorID - NUM_PREDEF_SELECTOR_IDS};
3284 Stream.EmitRecordWithBlob(SelectorOffsetAbbrev, Record,
3285 bytes(SelectorOffsets));
3290 /// \brief Write the selectors referenced in @selector expression into AST file.
3291 void ASTWriter::WriteReferencedSelectorsPool(Sema &SemaRef) {
3292 using namespace llvm;
3293 if (SemaRef.ReferencedSelectors.empty())
3297 ASTRecordWriter Writer(*this, Record);
3299 // Note: this writes out all references even for a dependent AST. But it is
3300 // very tricky to fix, and given that @selector shouldn't really appear in
3301 // headers, probably not worth it. It's not a correctness issue.
3302 for (auto &SelectorAndLocation : SemaRef.ReferencedSelectors) {
3303 Selector Sel = SelectorAndLocation.first;
3304 SourceLocation Loc = SelectorAndLocation.second;
3305 Writer.AddSelectorRef(Sel);
3306 Writer.AddSourceLocation(Loc);
3308 Writer.Emit(REFERENCED_SELECTOR_POOL);
3311 //===----------------------------------------------------------------------===//
3312 // Identifier Table Serialization
3313 //===----------------------------------------------------------------------===//
3315 /// Determine the declaration that should be put into the name lookup table to
3316 /// represent the given declaration in this module. This is usually D itself,
3317 /// but if D was imported and merged into a local declaration, we want the most
3318 /// recent local declaration instead. The chosen declaration will be the most
3319 /// recent declaration in any module that imports this one.
3320 static NamedDecl *getDeclForLocalLookup(const LangOptions &LangOpts,
3322 if (!LangOpts.Modules || !D->isFromASTFile())
3325 if (Decl *Redecl = D->getPreviousDecl()) {
3326 // For Redeclarable decls, a prior declaration might be local.
3327 for (; Redecl; Redecl = Redecl->getPreviousDecl()) {
3328 // If we find a local decl, we're done.
3329 if (!Redecl->isFromASTFile()) {
3330 // Exception: in very rare cases (for injected-class-names), not all
3331 // redeclarations are in the same semantic context. Skip ones in a
3332 // different context. They don't go in this lookup table at all.
3333 if (!Redecl->getDeclContext()->getRedeclContext()->Equals(
3334 D->getDeclContext()->getRedeclContext()))
3336 return cast<NamedDecl>(Redecl);
3339 // If we find a decl from a (chained-)PCH stop since we won't find a
3341 if (Redecl->getOwningModuleID() == 0)
3344 } else if (Decl *First = D->getCanonicalDecl()) {
3345 // For Mergeable decls, the first decl might be local.
3346 if (!First->isFromASTFile())
3347 return cast<NamedDecl>(First);
3350 // All declarations are imported. Our most recent declaration will also be
3351 // the most recent one in anyone who imports us.
3357 class ASTIdentifierTableTrait {
3360 IdentifierResolver &IdResolver;
3363 ASTWriter::RecordData *InterestingIdentifierOffsets;
3365 /// \brief Determines whether this is an "interesting" identifier that needs a
3366 /// full IdentifierInfo structure written into the hash table. Notably, this
3367 /// doesn't check whether the name has macros defined; use PublicMacroIterator
3369 bool isInterestingIdentifier(const IdentifierInfo *II, uint64_t MacroOffset) {
3372 (IsModule ? II->hasRevertedBuiltin() : II->getObjCOrBuiltinID()) ||
3373 II->hasRevertedTokenIDToIdentifier() ||
3374 (NeedDecls && II->getFETokenInfo<void>()))
3381 typedef IdentifierInfo* key_type;
3382 typedef key_type key_type_ref;
3384 typedef IdentID data_type;
3385 typedef data_type data_type_ref;
3387 typedef unsigned hash_value_type;
3388 typedef unsigned offset_type;
3390 ASTIdentifierTableTrait(ASTWriter &Writer, Preprocessor &PP,
3391 IdentifierResolver &IdResolver, bool IsModule,
3392 ASTWriter::RecordData *InterestingIdentifierOffsets)
3393 : Writer(Writer), PP(PP), IdResolver(IdResolver), IsModule(IsModule),
3394 NeedDecls(!IsModule || !Writer.getLangOpts().CPlusPlus),
3395 InterestingIdentifierOffsets(InterestingIdentifierOffsets) {}
3397 bool needDecls() const { return NeedDecls; }
3399 static hash_value_type ComputeHash(const IdentifierInfo* II) {
3400 return llvm::HashString(II->getName());
3403 bool isInterestingIdentifier(const IdentifierInfo *II) {
3404 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3405 return isInterestingIdentifier(II, MacroOffset);
3408 bool isInterestingNonMacroIdentifier(const IdentifierInfo *II) {
3409 return isInterestingIdentifier(II, 0);
3412 std::pair<unsigned,unsigned>
3413 EmitKeyDataLength(raw_ostream& Out, IdentifierInfo* II, IdentID ID) {
3414 unsigned KeyLen = II->getLength() + 1;
3415 unsigned DataLen = 4; // 4 bytes for the persistent ID << 1
3416 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3417 if (isInterestingIdentifier(II, MacroOffset)) {
3418 DataLen += 2; // 2 bytes for builtin ID
3419 DataLen += 2; // 2 bytes for flags
3421 DataLen += 4; // MacroDirectives offset.
3424 for (IdentifierResolver::iterator D = IdResolver.begin(II),
3425 DEnd = IdResolver.end();
3430 using namespace llvm::support;
3431 endian::Writer<little> LE(Out);
3433 assert((uint16_t)DataLen == DataLen && (uint16_t)KeyLen == KeyLen);
3434 LE.write<uint16_t>(DataLen);
3435 // We emit the key length after the data length so that every
3436 // string is preceded by a 16-bit length. This matches the PTH
3437 // format for storing identifiers.
3438 LE.write<uint16_t>(KeyLen);
3439 return std::make_pair(KeyLen, DataLen);
3442 void EmitKey(raw_ostream& Out, const IdentifierInfo* II,
3444 // Record the location of the key data. This is used when generating
3445 // the mapping from persistent IDs to strings.
3446 Writer.SetIdentifierOffset(II, Out.tell());
3448 // Emit the offset of the key/data length information to the interesting
3449 // identifiers table if necessary.
3450 if (InterestingIdentifierOffsets && isInterestingIdentifier(II))
3451 InterestingIdentifierOffsets->push_back(Out.tell() - 4);
3453 Out.write(II->getNameStart(), KeyLen);
3456 void EmitData(raw_ostream& Out, IdentifierInfo* II,
3457 IdentID ID, unsigned) {
3458 using namespace llvm::support;
3459 endian::Writer<little> LE(Out);
3461 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3462 if (!isInterestingIdentifier(II, MacroOffset)) {
3463 LE.write<uint32_t>(ID << 1);
3467 LE.write<uint32_t>((ID << 1) | 0x01);
3468 uint32_t Bits = (uint32_t)II->getObjCOrBuiltinID();
3469 assert((Bits & 0xffff) == Bits && "ObjCOrBuiltinID too big for ASTReader.");
3470 LE.write<uint16_t>(Bits);
3472 bool HadMacroDefinition = MacroOffset != 0;
3473 Bits = (Bits << 1) | unsigned(HadMacroDefinition);
3474 Bits = (Bits << 1) | unsigned(II->isExtensionToken());
3475 Bits = (Bits << 1) | unsigned(II->isPoisoned());
3476 Bits = (Bits << 1) | unsigned(II->hasRevertedBuiltin());
3477 Bits = (Bits << 1) | unsigned(II->hasRevertedTokenIDToIdentifier());
3478 Bits = (Bits << 1) | unsigned(II->isCPlusPlusOperatorKeyword());
3479 LE.write<uint16_t>(Bits);
3481 if (HadMacroDefinition)
3482 LE.write<uint32_t>(MacroOffset);
3485 // Emit the declaration IDs in reverse order, because the
3486 // IdentifierResolver provides the declarations as they would be
3487 // visible (e.g., the function "stat" would come before the struct
3488 // "stat"), but the ASTReader adds declarations to the end of the list
3489 // (so we need to see the struct "stat" before the function "stat").
3490 // Only emit declarations that aren't from a chained PCH, though.
3491 SmallVector<NamedDecl *, 16> Decls(IdResolver.begin(II),
3493 for (SmallVectorImpl<NamedDecl *>::reverse_iterator D = Decls.rbegin(),
3494 DEnd = Decls.rend();
3497 Writer.getDeclID(getDeclForLocalLookup(PP.getLangOpts(), *D)));
3502 } // end anonymous namespace
3504 /// \brief Write the identifier table into the AST file.
3506 /// The identifier table consists of a blob containing string data
3507 /// (the actual identifiers themselves) and a separate "offsets" index
3508 /// that maps identifier IDs to locations within the blob.
3509 void ASTWriter::WriteIdentifierTable(Preprocessor &PP,
3510 IdentifierResolver &IdResolver,
3512 using namespace llvm;
3514 RecordData InterestingIdents;
3516 // Create and write out the blob that contains the identifier
3519 llvm::OnDiskChainedHashTableGenerator<ASTIdentifierTableTrait> Generator;
3520 ASTIdentifierTableTrait Trait(
3521 *this, PP, IdResolver, IsModule,
3522 (getLangOpts().CPlusPlus && IsModule) ? &InterestingIdents : nullptr);
3524 // Look for any identifiers that were named while processing the
3525 // headers, but are otherwise not needed. We add these to the hash
3526 // table to enable checking of the predefines buffer in the case
3527 // where the user adds new macro definitions when building the AST
3529 SmallVector<const IdentifierInfo *, 128> IIs;
3530 for (const auto &ID : PP.getIdentifierTable())
3531 IIs.push_back(ID.second);
3532 // Sort the identifiers lexicographically before getting them references so
3533 // that their order is stable.
3534 std::sort(IIs.begin(), IIs.end(), llvm::less_ptr<IdentifierInfo>());
3535 for (const IdentifierInfo *II : IIs)
3536 if (Trait.isInterestingNonMacroIdentifier(II))
3537 getIdentifierRef(II);
3539 // Create the on-disk hash table representation. We only store offsets
3540 // for identifiers that appear here for the first time.
3541 IdentifierOffsets.resize(NextIdentID - FirstIdentID);
3542 for (auto IdentIDPair : IdentifierIDs) {
3543 auto *II = const_cast<IdentifierInfo *>(IdentIDPair.first);
3544 IdentID ID = IdentIDPair.second;
3545 assert(II && "NULL identifier in identifier table");
3546 // Write out identifiers if either the ID is local or the identifier has
3547 // changed since it was loaded.
3548 if (ID >= FirstIdentID || !Chain || !II->isFromAST()
3549 || II->hasChangedSinceDeserialization() ||
3550 (Trait.needDecls() &&
3551 II->hasFETokenInfoChangedSinceDeserialization()))
3552 Generator.insert(II, ID, Trait);
3555 // Create the on-disk hash table in a buffer.
3556 SmallString<4096> IdentifierTable;
3557 uint32_t BucketOffset;
3559 using namespace llvm::support;
3560 llvm::raw_svector_ostream Out(IdentifierTable);
3561 // Make sure that no bucket is at offset 0
3562 endian::Writer<little>(Out).write<uint32_t>(0);
3563 BucketOffset = Generator.Emit(Out, Trait);
3566 // Create a blob abbreviation
3567 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3568 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_TABLE));
3569 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3570 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3571 unsigned IDTableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3573 // Write the identifier table
3574 RecordData::value_type Record[] = {IDENTIFIER_TABLE, BucketOffset};
3575 Stream.EmitRecordWithBlob(IDTableAbbrev, Record, IdentifierTable);
3578 // Write the offsets table for identifier IDs.
3579 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3580 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_OFFSET));
3581 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of identifiers
3582 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3583 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3584 unsigned IdentifierOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3587 for (unsigned I = 0, N = IdentifierOffsets.size(); I != N; ++I)
3588 assert(IdentifierOffsets[I] && "Missing identifier offset?");
3591 RecordData::value_type Record[] = {IDENTIFIER_OFFSET,
3592 IdentifierOffsets.size(),
3593 FirstIdentID - NUM_PREDEF_IDENT_IDS};
3594 Stream.EmitRecordWithBlob(IdentifierOffsetAbbrev, Record,
3595 bytes(IdentifierOffsets));
3597 // In C++, write the list of interesting identifiers (those that are
3598 // defined as macros, poisoned, or similar unusual things).
3599 if (!InterestingIdents.empty())
3600 Stream.EmitRecord(INTERESTING_IDENTIFIERS, InterestingIdents);
3603 //===----------------------------------------------------------------------===//
3604 // DeclContext's Name Lookup Table Serialization
3605 //===----------------------------------------------------------------------===//
3609 // Trait used for the on-disk hash table used in the method pool.
3610 class ASTDeclContextNameLookupTrait {
3612 llvm::SmallVector<DeclID, 64> DeclIDs;
3615 typedef DeclarationNameKey key_type;
3616 typedef key_type key_type_ref;
3618 /// A start and end index into DeclIDs, representing a sequence of decls.
3619 typedef std::pair<unsigned, unsigned> data_type;
3620 typedef const data_type& data_type_ref;
3622 typedef unsigned hash_value_type;
3623 typedef unsigned offset_type;
3625 explicit ASTDeclContextNameLookupTrait(ASTWriter &Writer) : Writer(Writer) { }
3627 template<typename Coll>
3628 data_type getData(const Coll &Decls) {
3629 unsigned Start = DeclIDs.size();
3630 for (NamedDecl *D : Decls) {
3632 Writer.GetDeclRef(getDeclForLocalLookup(Writer.getLangOpts(), D)));
3634 return std::make_pair(Start, DeclIDs.size());
3637 data_type ImportData(const reader::ASTDeclContextNameLookupTrait::data_type &FromReader) {
3638 unsigned Start = DeclIDs.size();
3639 for (auto ID : FromReader)
3640 DeclIDs.push_back(ID);
3641 return std::make_pair(Start, DeclIDs.size());
3644 static bool EqualKey(key_type_ref a, key_type_ref b) {
3648 hash_value_type ComputeHash(DeclarationNameKey Name) {
3649 return Name.getHash();
3652 void EmitFileRef(raw_ostream &Out, ModuleFile *F) const {
3653 assert(Writer.hasChain() &&
3654 "have reference to loaded module file but no chain?");
3656 using namespace llvm::support;
3657 endian::Writer<little>(Out)
3658 .write<uint32_t>(Writer.getChain()->getModuleFileID(F));
3661 std::pair<unsigned, unsigned> EmitKeyDataLength(raw_ostream &Out,
3662 DeclarationNameKey Name,
3663 data_type_ref Lookup) {
3664 using namespace llvm::support;
3665 endian::Writer<little> LE(Out);
3666 unsigned KeyLen = 1;
3667 switch (Name.getKind()) {
3668 case DeclarationName::Identifier:
3669 case DeclarationName::ObjCZeroArgSelector:
3670 case DeclarationName::ObjCOneArgSelector:
3671 case DeclarationName::ObjCMultiArgSelector:
3672 case DeclarationName::CXXLiteralOperatorName:
3673 case DeclarationName::CXXDeductionGuideName:
3676 case DeclarationName::CXXOperatorName:
3679 case DeclarationName::CXXConstructorName:
3680 case DeclarationName::CXXDestructorName:
3681 case DeclarationName::CXXConversionFunctionName:
3682 case DeclarationName::CXXUsingDirective:
3685 LE.write<uint16_t>(KeyLen);
3687 // 4 bytes for each DeclID.
3688 unsigned DataLen = 4 * (Lookup.second - Lookup.first);
3689 assert(uint16_t(DataLen) == DataLen &&
3690 "too many decls for serialized lookup result");
3691 LE.write<uint16_t>(DataLen);
3693 return std::make_pair(KeyLen, DataLen);
3696 void EmitKey(raw_ostream &Out, DeclarationNameKey Name, unsigned) {
3697 using namespace llvm::support;
3698 endian::Writer<little> LE(Out);
3699 LE.write<uint8_t>(Name.getKind());
3700 switch (Name.getKind()) {
3701 case DeclarationName::Identifier:
3702 case DeclarationName::CXXLiteralOperatorName:
3703 case DeclarationName::CXXDeductionGuideName:
3704 LE.write<uint32_t>(Writer.getIdentifierRef(Name.getIdentifier()));
3706 case DeclarationName::ObjCZeroArgSelector:
3707 case DeclarationName::ObjCOneArgSelector:
3708 case DeclarationName::ObjCMultiArgSelector:
3709 LE.write<uint32_t>(Writer.getSelectorRef(Name.getSelector()));
3711 case DeclarationName::CXXOperatorName:
3712 assert(Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS &&
3713 "Invalid operator?");
3714 LE.write<uint8_t>(Name.getOperatorKind());
3716 case DeclarationName::CXXConstructorName:
3717 case DeclarationName::CXXDestructorName:
3718 case DeclarationName::CXXConversionFunctionName:
3719 case DeclarationName::CXXUsingDirective:
3723 llvm_unreachable("Invalid name kind?");
3726 void EmitData(raw_ostream &Out, key_type_ref, data_type Lookup,
3728 using namespace llvm::support;
3729 endian::Writer<little> LE(Out);
3730 uint64_t Start = Out.tell(); (void)Start;
3731 for (unsigned I = Lookup.first, N = Lookup.second; I != N; ++I)
3732 LE.write<uint32_t>(DeclIDs[I]);
3733 assert(Out.tell() - Start == DataLen && "Data length is wrong");
3737 } // end anonymous namespace
3739 bool ASTWriter::isLookupResultExternal(StoredDeclsList &Result,
3741 return Result.hasExternalDecls() && DC->NeedToReconcileExternalVisibleStorage;
3744 bool ASTWriter::isLookupResultEntirelyExternal(StoredDeclsList &Result,
3746 for (auto *D : Result.getLookupResult())
3747 if (!getDeclForLocalLookup(getLangOpts(), D)->isFromASTFile())
3754 ASTWriter::GenerateNameLookupTable(const DeclContext *ConstDC,
3755 llvm::SmallVectorImpl<char> &LookupTable) {
3756 assert(!ConstDC->HasLazyLocalLexicalLookups &&
3757 !ConstDC->HasLazyExternalLexicalLookups &&
3758 "must call buildLookups first");
3760 // FIXME: We need to build the lookups table, which is logically const.
3761 auto *DC = const_cast<DeclContext*>(ConstDC);
3762 assert(DC == DC->getPrimaryContext() && "only primary DC has lookup table");
3764 // Create the on-disk hash table representation.
3765 MultiOnDiskHashTableGenerator<reader::ASTDeclContextNameLookupTrait,
3766 ASTDeclContextNameLookupTrait> Generator;
3767 ASTDeclContextNameLookupTrait Trait(*this);
3769 // The first step is to collect the declaration names which we need to
3770 // serialize into the name lookup table, and to collect them in a stable
3772 SmallVector<DeclarationName, 16> Names;
3774 // We also build up small sets of the constructor and conversion function
3775 // names which are visible.
3776 llvm::SmallSet<DeclarationName, 8> ConstructorNameSet, ConversionNameSet;
3778 for (auto &Lookup : *DC->buildLookup()) {
3779 auto &Name = Lookup.first;
3780 auto &Result = Lookup.second;
3782 // If there are no local declarations in our lookup result, we
3783 // don't need to write an entry for the name at all. If we can't
3784 // write out a lookup set without performing more deserialization,
3785 // just skip this entry.
3786 if (isLookupResultExternal(Result, DC) &&
3787 isLookupResultEntirelyExternal(Result, DC))
3790 // We also skip empty results. If any of the results could be external and
3791 // the currently available results are empty, then all of the results are
3792 // external and we skip it above. So the only way we get here with an empty
3793 // results is when no results could have been external *and* we have
3794 // external results.
3796 // FIXME: While we might want to start emitting on-disk entries for negative
3797 // lookups into a decl context as an optimization, today we *have* to skip
3798 // them because there are names with empty lookup results in decl contexts
3799 // which we can't emit in any stable ordering: we lookup constructors and
3800 // conversion functions in the enclosing namespace scope creating empty
3801 // results for them. This in almost certainly a bug in Clang's name lookup,
3802 // but that is likely to be hard or impossible to fix and so we tolerate it
3803 // here by omitting lookups with empty results.
3804 if (Lookup.second.getLookupResult().empty())
3807 switch (Lookup.first.getNameKind()) {
3809 Names.push_back(Lookup.first);
3812 case DeclarationName::CXXConstructorName:
3813 assert(isa<CXXRecordDecl>(DC) &&
3814 "Cannot have a constructor name outside of a class!");
3815 ConstructorNameSet.insert(Name);
3818 case DeclarationName::CXXConversionFunctionName:
3819 assert(isa<CXXRecordDecl>(DC) &&
3820 "Cannot have a conversion function name outside of a class!");
3821 ConversionNameSet.insert(Name);
3826 // Sort the names into a stable order.
3827 std::sort(Names.begin(), Names.end());
3829 if (auto *D = dyn_cast<CXXRecordDecl>(DC)) {
3830 // We need to establish an ordering of constructor and conversion function
3831 // names, and they don't have an intrinsic ordering.
3833 // First we try the easy case by forming the current context's constructor
3834 // name and adding that name first. This is a very useful optimization to
3835 // avoid walking the lexical declarations in many cases, and it also
3836 // handles the only case where a constructor name can come from some other
3837 // lexical context -- when that name is an implicit constructor merged from
3838 // another declaration in the redecl chain. Any non-implicit constructor or
3839 // conversion function which doesn't occur in all the lexical contexts
3840 // would be an ODR violation.
3841 auto ImplicitCtorName = Context->DeclarationNames.getCXXConstructorName(
3842 Context->getCanonicalType(Context->getRecordType(D)));
3843 if (ConstructorNameSet.erase(ImplicitCtorName))
3844 Names.push_back(ImplicitCtorName);
3846 // If we still have constructors or conversion functions, we walk all the
3847 // names in the decl and add the constructors and conversion functions
3848 // which are visible in the order they lexically occur within the context.
3849 if (!ConstructorNameSet.empty() || !ConversionNameSet.empty())
3850 for (Decl *ChildD : cast<CXXRecordDecl>(DC)->decls())
3851 if (auto *ChildND = dyn_cast<NamedDecl>(ChildD)) {
3852 auto Name = ChildND->getDeclName();
3853 switch (Name.getNameKind()) {
3857 case DeclarationName::CXXConstructorName:
3858 if (ConstructorNameSet.erase(Name))
3859 Names.push_back(Name);
3862 case DeclarationName::CXXConversionFunctionName:
3863 if (ConversionNameSet.erase(Name))
3864 Names.push_back(Name);
3868 if (ConstructorNameSet.empty() && ConversionNameSet.empty())
3872 assert(ConstructorNameSet.empty() && "Failed to find all of the visible "
3873 "constructors by walking all the "
3874 "lexical members of the context.");
3875 assert(ConversionNameSet.empty() && "Failed to find all of the visible "
3876 "conversion functions by walking all "
3877 "the lexical members of the context.");
3880 // Next we need to do a lookup with each name into this decl context to fully
3881 // populate any results from external sources. We don't actually use the
3882 // results of these lookups because we only want to use the results after all
3883 // results have been loaded and the pointers into them will be stable.
3884 for (auto &Name : Names)
3887 // Now we need to insert the results for each name into the hash table. For
3888 // constructor names and conversion function names, we actually need to merge
3889 // all of the results for them into one list of results each and insert
3891 SmallVector<NamedDecl *, 8> ConstructorDecls;
3892 SmallVector<NamedDecl *, 8> ConversionDecls;
3894 // Now loop over the names, either inserting them or appending for the two
3896 for (auto &Name : Names) {
3897 DeclContext::lookup_result Result = DC->noload_lookup(Name);
3899 switch (Name.getNameKind()) {
3901 Generator.insert(Name, Trait.getData(Result), Trait);
3904 case DeclarationName::CXXConstructorName:
3905 ConstructorDecls.append(Result.begin(), Result.end());
3908 case DeclarationName::CXXConversionFunctionName:
3909 ConversionDecls.append(Result.begin(), Result.end());
3914 // Handle our two special cases if we ended up having any. We arbitrarily use
3915 // the first declaration's name here because the name itself isn't part of
3916 // the key, only the kind of name is used.
3917 if (!ConstructorDecls.empty())
3918 Generator.insert(ConstructorDecls.front()->getDeclName(),
3919 Trait.getData(ConstructorDecls), Trait);
3920 if (!ConversionDecls.empty())
3921 Generator.insert(ConversionDecls.front()->getDeclName(),
3922 Trait.getData(ConversionDecls), Trait);
3924 // Create the on-disk hash table. Also emit the existing imported and
3925 // merged table if there is one.
3926 auto *Lookups = Chain ? Chain->getLoadedLookupTables(DC) : nullptr;
3927 Generator.emit(LookupTable, Trait, Lookups ? &Lookups->Table : nullptr);
3930 /// \brief Write the block containing all of the declaration IDs
3931 /// visible from the given DeclContext.
3933 /// \returns the offset of the DECL_CONTEXT_VISIBLE block within the
3934 /// bitstream, or 0 if no block was written.
3935 uint64_t ASTWriter::WriteDeclContextVisibleBlock(ASTContext &Context,
3937 // If we imported a key declaration of this namespace, write the visible
3938 // lookup results as an update record for it rather than including them
3939 // on this declaration. We will only look at key declarations on reload.
3940 if (isa<NamespaceDecl>(DC) && Chain &&
3941 Chain->getKeyDeclaration(cast<Decl>(DC))->isFromASTFile()) {
3942 // Only do this once, for the first local declaration of the namespace.
3943 for (auto *Prev = cast<NamespaceDecl>(DC)->getPreviousDecl(); Prev;
3944 Prev = Prev->getPreviousDecl())
3945 if (!Prev->isFromASTFile())
3948 // Note that we need to emit an update record for the primary context.
3949 UpdatedDeclContexts.insert(DC->getPrimaryContext());
3951 // Make sure all visible decls are written. They will be recorded later. We
3952 // do this using a side data structure so we can sort the names into
3953 // a deterministic order.
3954 StoredDeclsMap *Map = DC->getPrimaryContext()->buildLookup();
3955 SmallVector<std::pair<DeclarationName, DeclContext::lookup_result>, 16>
3958 LookupResults.reserve(Map->size());
3959 for (auto &Entry : *Map)
3960 LookupResults.push_back(
3961 std::make_pair(Entry.first, Entry.second.getLookupResult()));
3964 std::sort(LookupResults.begin(), LookupResults.end(), llvm::less_first());
3965 for (auto &NameAndResult : LookupResults) {
3966 DeclarationName Name = NameAndResult.first;
3967 DeclContext::lookup_result Result = NameAndResult.second;
3968 if (Name.getNameKind() == DeclarationName::CXXConstructorName ||
3969 Name.getNameKind() == DeclarationName::CXXConversionFunctionName) {
3970 // We have to work around a name lookup bug here where negative lookup
3971 // results for these names get cached in namespace lookup tables (these
3972 // names should never be looked up in a namespace).
3973 assert(Result.empty() && "Cannot have a constructor or conversion "
3974 "function name in a namespace!");
3978 for (NamedDecl *ND : Result)
3979 if (!ND->isFromASTFile())
3986 if (DC->getPrimaryContext() != DC)
3989 // Skip contexts which don't support name lookup.
3990 if (!DC->isLookupContext())
3993 // If not in C++, we perform name lookup for the translation unit via the
3994 // IdentifierInfo chains, don't bother to build a visible-declarations table.
3995 if (DC->isTranslationUnit() && !Context.getLangOpts().CPlusPlus)
3998 // Serialize the contents of the mapping used for lookup. Note that,
3999 // although we have two very different code paths, the serialized
4000 // representation is the same for both cases: a declaration name,
4001 // followed by a size, followed by references to the visible
4002 // declarations that have that name.
4003 uint64_t Offset = Stream.GetCurrentBitNo();
4004 StoredDeclsMap *Map = DC->buildLookup();
4005 if (!Map || Map->empty())
4008 // Create the on-disk hash table in a buffer.
4009 SmallString<4096> LookupTable;
4010 GenerateNameLookupTable(DC, LookupTable);
4012 // Write the lookup table
4013 RecordData::value_type Record[] = {DECL_CONTEXT_VISIBLE};
4014 Stream.EmitRecordWithBlob(DeclContextVisibleLookupAbbrev, Record,
4016 ++NumVisibleDeclContexts;
4020 /// \brief Write an UPDATE_VISIBLE block for the given context.
4022 /// UPDATE_VISIBLE blocks contain the declarations that are added to an existing
4023 /// DeclContext in a dependent AST file. As such, they only exist for the TU
4024 /// (in C++), for namespaces, and for classes with forward-declared unscoped
4025 /// enumeration members (in C++11).
4026 void ASTWriter::WriteDeclContextVisibleUpdate(const DeclContext *DC) {
4027 StoredDeclsMap *Map = DC->getLookupPtr();
4028 if (!Map || Map->empty())
4031 // Create the on-disk hash table in a buffer.
4032 SmallString<4096> LookupTable;
4033 GenerateNameLookupTable(DC, LookupTable);
4035 // If we're updating a namespace, select a key declaration as the key for the
4036 // update record; those are the only ones that will be checked on reload.
4037 if (isa<NamespaceDecl>(DC))
4038 DC = cast<DeclContext>(Chain->getKeyDeclaration(cast<Decl>(DC)));
4040 // Write the lookup table
4041 RecordData::value_type Record[] = {UPDATE_VISIBLE, getDeclID(cast<Decl>(DC))};
4042 Stream.EmitRecordWithBlob(UpdateVisibleAbbrev, Record, LookupTable);
4045 /// \brief Write an FP_PRAGMA_OPTIONS block for the given FPOptions.
4046 void ASTWriter::WriteFPPragmaOptions(const FPOptions &Opts) {
4047 RecordData::value_type Record[] = {Opts.getInt()};
4048 Stream.EmitRecord(FP_PRAGMA_OPTIONS, Record);
4051 /// \brief Write an OPENCL_EXTENSIONS block for the given OpenCLOptions.
4052 void ASTWriter::WriteOpenCLExtensions(Sema &SemaRef) {
4053 if (!SemaRef.Context.getLangOpts().OpenCL)
4056 const OpenCLOptions &Opts = SemaRef.getOpenCLOptions();
4058 for (const auto &I:Opts.OptMap) {
4059 AddString(I.getKey(), Record);
4060 auto V = I.getValue();
4061 Record.push_back(V.Supported ? 1 : 0);
4062 Record.push_back(V.Enabled ? 1 : 0);
4063 Record.push_back(V.Avail);
4064 Record.push_back(V.Core);
4066 Stream.EmitRecord(OPENCL_EXTENSIONS, Record);
4069 void ASTWriter::WriteOpenCLExtensionTypes(Sema &SemaRef) {
4070 if (!SemaRef.Context.getLangOpts().OpenCL)
4074 for (const auto &I : SemaRef.OpenCLTypeExtMap) {
4076 static_cast<unsigned>(getTypeID(I.first->getCanonicalTypeInternal())));
4077 Record.push_back(I.second.size());
4078 for (auto Ext : I.second)
4079 AddString(Ext, Record);
4081 Stream.EmitRecord(OPENCL_EXTENSION_TYPES, Record);
4084 void ASTWriter::WriteOpenCLExtensionDecls(Sema &SemaRef) {
4085 if (!SemaRef.Context.getLangOpts().OpenCL)
4089 for (const auto &I : SemaRef.OpenCLDeclExtMap) {
4090 Record.push_back(getDeclID(I.first));
4091 Record.push_back(static_cast<unsigned>(I.second.size()));
4092 for (auto Ext : I.second)
4093 AddString(Ext, Record);
4095 Stream.EmitRecord(OPENCL_EXTENSION_DECLS, Record);
4098 void ASTWriter::WriteCUDAPragmas(Sema &SemaRef) {
4099 if (SemaRef.ForceCUDAHostDeviceDepth > 0) {
4100 RecordData::value_type Record[] = {SemaRef.ForceCUDAHostDeviceDepth};
4101 Stream.EmitRecord(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH, Record);
4105 void ASTWriter::WriteObjCCategories() {
4106 SmallVector<ObjCCategoriesInfo, 2> CategoriesMap;
4107 RecordData Categories;
4109 for (unsigned I = 0, N = ObjCClassesWithCategories.size(); I != N; ++I) {
4111 unsigned StartIndex = Categories.size();
4113 ObjCInterfaceDecl *Class = ObjCClassesWithCategories[I];
4115 // Allocate space for the size.
4116 Categories.push_back(0);
4118 // Add the categories.
4119 for (ObjCInterfaceDecl::known_categories_iterator
4120 Cat = Class->known_categories_begin(),
4121 CatEnd = Class->known_categories_end();
4122 Cat != CatEnd; ++Cat, ++Size) {
4123 assert(getDeclID(*Cat) != 0 && "Bogus category");
4124 AddDeclRef(*Cat, Categories);
4128 Categories[StartIndex] = Size;
4130 // Record this interface -> category map.
4131 ObjCCategoriesInfo CatInfo = { getDeclID(Class), StartIndex };
4132 CategoriesMap.push_back(CatInfo);
4135 // Sort the categories map by the definition ID, since the reader will be
4136 // performing binary searches on this information.
4137 llvm::array_pod_sort(CategoriesMap.begin(), CategoriesMap.end());
4139 // Emit the categories map.
4140 using namespace llvm;
4142 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4143 Abbrev->Add(BitCodeAbbrevOp(OBJC_CATEGORIES_MAP));
4144 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # of entries
4145 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4146 unsigned AbbrevID = Stream.EmitAbbrev(std::move(Abbrev));
4148 RecordData::value_type Record[] = {OBJC_CATEGORIES_MAP, CategoriesMap.size()};
4149 Stream.EmitRecordWithBlob(AbbrevID, Record,
4150 reinterpret_cast<char *>(CategoriesMap.data()),
4151 CategoriesMap.size() * sizeof(ObjCCategoriesInfo));
4153 // Emit the category lists.
4154 Stream.EmitRecord(OBJC_CATEGORIES, Categories);
4157 void ASTWriter::WriteLateParsedTemplates(Sema &SemaRef) {
4158 Sema::LateParsedTemplateMapT &LPTMap = SemaRef.LateParsedTemplateMap;
4164 for (auto &LPTMapEntry : LPTMap) {
4165 const FunctionDecl *FD = LPTMapEntry.first;
4166 LateParsedTemplate &LPT = *LPTMapEntry.second;
4167 AddDeclRef(FD, Record);
4168 AddDeclRef(LPT.D, Record);
4169 Record.push_back(LPT.Toks.size());
4171 for (const auto &Tok : LPT.Toks) {
4172 AddToken(Tok, Record);
4175 Stream.EmitRecord(LATE_PARSED_TEMPLATE, Record);
4178 /// \brief Write the state of 'pragma clang optimize' at the end of the module.
4179 void ASTWriter::WriteOptimizePragmaOptions(Sema &SemaRef) {
4181 SourceLocation PragmaLoc = SemaRef.getOptimizeOffPragmaLocation();
4182 AddSourceLocation(PragmaLoc, Record);
4183 Stream.EmitRecord(OPTIMIZE_PRAGMA_OPTIONS, Record);
4186 /// \brief Write the state of 'pragma ms_struct' at the end of the module.
4187 void ASTWriter::WriteMSStructPragmaOptions(Sema &SemaRef) {
4189 Record.push_back(SemaRef.MSStructPragmaOn ? PMSST_ON : PMSST_OFF);
4190 Stream.EmitRecord(MSSTRUCT_PRAGMA_OPTIONS, Record);
4193 /// \brief Write the state of 'pragma pointers_to_members' at the end of the
4195 void ASTWriter::WriteMSPointersToMembersPragmaOptions(Sema &SemaRef) {
4197 Record.push_back(SemaRef.MSPointerToMemberRepresentationMethod);
4198 AddSourceLocation(SemaRef.ImplicitMSInheritanceAttrLoc, Record);
4199 Stream.EmitRecord(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS, Record);
4202 /// \brief Write the state of 'pragma pack' at the end of the module.
4203 void ASTWriter::WritePackPragmaOptions(Sema &SemaRef) {
4204 // Don't serialize pragma pack state for modules, since it should only take
4205 // effect on a per-submodule basis.
4210 Record.push_back(SemaRef.PackStack.CurrentValue);
4211 AddSourceLocation(SemaRef.PackStack.CurrentPragmaLocation, Record);
4212 Record.push_back(SemaRef.PackStack.Stack.size());
4213 for (const auto &StackEntry : SemaRef.PackStack.Stack) {
4214 Record.push_back(StackEntry.Value);
4215 AddSourceLocation(StackEntry.PragmaLocation, Record);
4216 AddString(StackEntry.StackSlotLabel, Record);
4218 Stream.EmitRecord(PACK_PRAGMA_OPTIONS, Record);
4221 void ASTWriter::WriteModuleFileExtension(Sema &SemaRef,
4222 ModuleFileExtensionWriter &Writer) {
4223 // Enter the extension block.
4224 Stream.EnterSubblock(EXTENSION_BLOCK_ID, 4);
4226 // Emit the metadata record abbreviation.
4227 auto Abv = std::make_shared<llvm::BitCodeAbbrev>();
4228 Abv->Add(llvm::BitCodeAbbrevOp(EXTENSION_METADATA));
4229 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4230 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4231 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4232 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4233 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4234 unsigned Abbrev = Stream.EmitAbbrev(std::move(Abv));
4236 // Emit the metadata record.
4238 auto Metadata = Writer.getExtension()->getExtensionMetadata();
4239 Record.push_back(EXTENSION_METADATA);
4240 Record.push_back(Metadata.MajorVersion);
4241 Record.push_back(Metadata.MinorVersion);
4242 Record.push_back(Metadata.BlockName.size());
4243 Record.push_back(Metadata.UserInfo.size());
4244 SmallString<64> Buffer;
4245 Buffer += Metadata.BlockName;
4246 Buffer += Metadata.UserInfo;
4247 Stream.EmitRecordWithBlob(Abbrev, Record, Buffer);
4249 // Emit the contents of the extension block.
4250 Writer.writeExtensionContents(SemaRef, Stream);
4252 // Exit the extension block.
4256 //===----------------------------------------------------------------------===//
4257 // General Serialization Routines
4258 //===----------------------------------------------------------------------===//
4260 /// \brief Emit the list of attributes to the specified record.
4261 void ASTRecordWriter::AddAttributes(ArrayRef<const Attr *> Attrs) {
4262 auto &Record = *this;
4263 Record.push_back(Attrs.size());
4264 for (const auto *A : Attrs) {
4265 Record.push_back(A->getKind()); // FIXME: stable encoding, target attrs
4266 Record.AddSourceRange(A->getRange());
4268 #include "clang/Serialization/AttrPCHWrite.inc"
4273 void ASTWriter::AddToken(const Token &Tok, RecordDataImpl &Record) {
4274 AddSourceLocation(Tok.getLocation(), Record);
4275 Record.push_back(Tok.getLength());
4277 // FIXME: When reading literal tokens, reconstruct the literal pointer
4279 AddIdentifierRef(Tok.getIdentifierInfo(), Record);
4280 // FIXME: Should translate token kind to a stable encoding.
4281 Record.push_back(Tok.getKind());
4282 // FIXME: Should translate token flags to a stable encoding.
4283 Record.push_back(Tok.getFlags());
4286 void ASTWriter::AddString(StringRef Str, RecordDataImpl &Record) {
4287 Record.push_back(Str.size());
4288 Record.insert(Record.end(), Str.begin(), Str.end());
4291 bool ASTWriter::PreparePathForOutput(SmallVectorImpl<char> &Path) {
4292 assert(Context && "should have context when outputting path");
4295 cleanPathForOutput(Context->getSourceManager().getFileManager(), Path);
4297 // Remove a prefix to make the path relative, if relevant.
4298 const char *PathBegin = Path.data();
4299 const char *PathPtr =
4300 adjustFilenameForRelocatableAST(PathBegin, BaseDirectory);
4301 if (PathPtr != PathBegin) {
4302 Path.erase(Path.begin(), Path.begin() + (PathPtr - PathBegin));
4309 void ASTWriter::AddPath(StringRef Path, RecordDataImpl &Record) {
4310 SmallString<128> FilePath(Path);
4311 PreparePathForOutput(FilePath);
4312 AddString(FilePath, Record);
4315 void ASTWriter::EmitRecordWithPath(unsigned Abbrev, RecordDataRef Record,
4317 SmallString<128> FilePath(Path);
4318 PreparePathForOutput(FilePath);
4319 Stream.EmitRecordWithBlob(Abbrev, Record, FilePath);
4322 void ASTWriter::AddVersionTuple(const VersionTuple &Version,
4323 RecordDataImpl &Record) {
4324 Record.push_back(Version.getMajor());
4325 if (Optional<unsigned> Minor = Version.getMinor())
4326 Record.push_back(*Minor + 1);
4328 Record.push_back(0);
4329 if (Optional<unsigned> Subminor = Version.getSubminor())
4330 Record.push_back(*Subminor + 1);
4332 Record.push_back(0);
4335 /// \brief Note that the identifier II occurs at the given offset
4336 /// within the identifier table.
4337 void ASTWriter::SetIdentifierOffset(const IdentifierInfo *II, uint32_t Offset) {
4338 IdentID ID = IdentifierIDs[II];
4339 // Only store offsets new to this AST file. Other identifier names are looked
4340 // up earlier in the chain and thus don't need an offset.
4341 if (ID >= FirstIdentID)
4342 IdentifierOffsets[ID - FirstIdentID] = Offset;
4345 /// \brief Note that the selector Sel occurs at the given offset
4346 /// within the method pool/selector table.
4347 void ASTWriter::SetSelectorOffset(Selector Sel, uint32_t Offset) {
4348 unsigned ID = SelectorIDs[Sel];
4349 assert(ID && "Unknown selector");
4350 // Don't record offsets for selectors that are also available in a different
4352 if (ID < FirstSelectorID)
4354 SelectorOffsets[ID - FirstSelectorID] = Offset;
4357 ASTWriter::ASTWriter(llvm::BitstreamWriter &Stream,
4358 SmallVectorImpl<char> &Buffer, MemoryBufferCache &PCMCache,
4359 ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions,
4360 bool IncludeTimestamps)
4361 : Stream(Stream), Buffer(Buffer), PCMCache(PCMCache),
4362 IncludeTimestamps(IncludeTimestamps) {
4363 for (const auto &Ext : Extensions) {
4364 if (auto Writer = Ext->createExtensionWriter(*this))
4365 ModuleFileExtensionWriters.push_back(std::move(Writer));
4369 ASTWriter::~ASTWriter() {
4370 llvm::DeleteContainerSeconds(FileDeclIDs);
4373 const LangOptions &ASTWriter::getLangOpts() const {
4374 assert(WritingAST && "can't determine lang opts when not writing AST");
4375 return Context->getLangOpts();
4378 time_t ASTWriter::getTimestampForOutput(const FileEntry *E) const {
4379 return IncludeTimestamps ? E->getModificationTime() : 0;
4382 ASTFileSignature ASTWriter::WriteAST(Sema &SemaRef,
4383 const std::string &OutputFile,
4384 Module *WritingModule, StringRef isysroot,
4388 ASTHasCompilerErrors = hasErrors;
4390 // Emit the file header.
4391 Stream.Emit((unsigned)'C', 8);
4392 Stream.Emit((unsigned)'P', 8);
4393 Stream.Emit((unsigned)'C', 8);
4394 Stream.Emit((unsigned)'H', 8);
4396 WriteBlockInfoBlock();
4398 Context = &SemaRef.Context;
4400 this->WritingModule = WritingModule;
4401 ASTFileSignature Signature =
4402 WriteASTCore(SemaRef, isysroot, OutputFile, WritingModule);
4405 this->WritingModule = nullptr;
4406 this->BaseDirectory.clear();
4409 if (SemaRef.Context.getLangOpts().ImplicitModules && WritingModule) {
4410 // Construct MemoryBuffer and update buffer manager.
4411 PCMCache.addBuffer(OutputFile,
4412 llvm::MemoryBuffer::getMemBufferCopy(
4413 StringRef(Buffer.begin(), Buffer.size())));
4418 template<typename Vector>
4419 static void AddLazyVectorDecls(ASTWriter &Writer, Vector &Vec,
4420 ASTWriter::RecordData &Record) {
4421 for (typename Vector::iterator I = Vec.begin(nullptr, true), E = Vec.end();
4423 Writer.AddDeclRef(*I, Record);
4427 ASTFileSignature ASTWriter::WriteASTCore(Sema &SemaRef, StringRef isysroot,
4428 const std::string &OutputFile,
4429 Module *WritingModule) {
4430 using namespace llvm;
4432 bool isModule = WritingModule != nullptr;
4434 // Make sure that the AST reader knows to finalize itself.
4436 Chain->finalizeForWriting();
4438 ASTContext &Context = SemaRef.Context;
4439 Preprocessor &PP = SemaRef.PP;
4441 // Set up predefined declaration IDs.
4442 auto RegisterPredefDecl = [&] (Decl *D, PredefinedDeclIDs ID) {
4444 assert(D->isCanonicalDecl() && "predefined decl is not canonical");
4448 RegisterPredefDecl(Context.getTranslationUnitDecl(),
4449 PREDEF_DECL_TRANSLATION_UNIT_ID);
4450 RegisterPredefDecl(Context.ObjCIdDecl, PREDEF_DECL_OBJC_ID_ID);
4451 RegisterPredefDecl(Context.ObjCSelDecl, PREDEF_DECL_OBJC_SEL_ID);
4452 RegisterPredefDecl(Context.ObjCClassDecl, PREDEF_DECL_OBJC_CLASS_ID);
4453 RegisterPredefDecl(Context.ObjCProtocolClassDecl,
4454 PREDEF_DECL_OBJC_PROTOCOL_ID);
4455 RegisterPredefDecl(Context.Int128Decl, PREDEF_DECL_INT_128_ID);
4456 RegisterPredefDecl(Context.UInt128Decl, PREDEF_DECL_UNSIGNED_INT_128_ID);
4457 RegisterPredefDecl(Context.ObjCInstanceTypeDecl,
4458 PREDEF_DECL_OBJC_INSTANCETYPE_ID);
4459 RegisterPredefDecl(Context.BuiltinVaListDecl, PREDEF_DECL_BUILTIN_VA_LIST_ID);
4460 RegisterPredefDecl(Context.VaListTagDecl, PREDEF_DECL_VA_LIST_TAG);
4461 RegisterPredefDecl(Context.BuiltinMSVaListDecl,
4462 PREDEF_DECL_BUILTIN_MS_VA_LIST_ID);
4463 RegisterPredefDecl(Context.ExternCContext, PREDEF_DECL_EXTERN_C_CONTEXT_ID);
4464 RegisterPredefDecl(Context.MakeIntegerSeqDecl,
4465 PREDEF_DECL_MAKE_INTEGER_SEQ_ID);
4466 RegisterPredefDecl(Context.CFConstantStringTypeDecl,
4467 PREDEF_DECL_CF_CONSTANT_STRING_ID);
4468 RegisterPredefDecl(Context.CFConstantStringTagDecl,
4469 PREDEF_DECL_CF_CONSTANT_STRING_TAG_ID);
4470 RegisterPredefDecl(Context.TypePackElementDecl,
4471 PREDEF_DECL_TYPE_PACK_ELEMENT_ID);
4473 // Build a record containing all of the tentative definitions in this file, in
4474 // TentativeDefinitions order. Generally, this record will be empty for
4476 RecordData TentativeDefinitions;
4477 AddLazyVectorDecls(*this, SemaRef.TentativeDefinitions, TentativeDefinitions);
4479 // Build a record containing all of the file scoped decls in this file.
4480 RecordData UnusedFileScopedDecls;
4482 AddLazyVectorDecls(*this, SemaRef.UnusedFileScopedDecls,
4483 UnusedFileScopedDecls);
4485 // Build a record containing all of the delegating constructors we still need
4487 RecordData DelegatingCtorDecls;
4489 AddLazyVectorDecls(*this, SemaRef.DelegatingCtorDecls, DelegatingCtorDecls);
4491 // Write the set of weak, undeclared identifiers. We always write the
4492 // entire table, since later PCH files in a PCH chain are only interested in
4493 // the results at the end of the chain.
4494 RecordData WeakUndeclaredIdentifiers;
4495 for (auto &WeakUndeclaredIdentifier : SemaRef.WeakUndeclaredIdentifiers) {
4496 IdentifierInfo *II = WeakUndeclaredIdentifier.first;
4497 WeakInfo &WI = WeakUndeclaredIdentifier.second;
4498 AddIdentifierRef(II, WeakUndeclaredIdentifiers);
4499 AddIdentifierRef(WI.getAlias(), WeakUndeclaredIdentifiers);
4500 AddSourceLocation(WI.getLocation(), WeakUndeclaredIdentifiers);
4501 WeakUndeclaredIdentifiers.push_back(WI.getUsed());
4504 // Build a record containing all of the ext_vector declarations.
4505 RecordData ExtVectorDecls;
4506 AddLazyVectorDecls(*this, SemaRef.ExtVectorDecls, ExtVectorDecls);
4508 // Build a record containing all of the VTable uses information.
4509 RecordData VTableUses;
4510 if (!SemaRef.VTableUses.empty()) {
4511 for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I) {
4512 AddDeclRef(SemaRef.VTableUses[I].first, VTableUses);
4513 AddSourceLocation(SemaRef.VTableUses[I].second, VTableUses);
4514 VTableUses.push_back(SemaRef.VTablesUsed[SemaRef.VTableUses[I].first]);
4518 // Build a record containing all of the UnusedLocalTypedefNameCandidates.
4519 RecordData UnusedLocalTypedefNameCandidates;
4520 for (const TypedefNameDecl *TD : SemaRef.UnusedLocalTypedefNameCandidates)
4521 AddDeclRef(TD, UnusedLocalTypedefNameCandidates);
4523 // Build a record containing all of pending implicit instantiations.
4524 RecordData PendingInstantiations;
4525 for (const auto &I : SemaRef.PendingInstantiations) {
4526 AddDeclRef(I.first, PendingInstantiations);
4527 AddSourceLocation(I.second, PendingInstantiations);
4529 assert(SemaRef.PendingLocalImplicitInstantiations.empty() &&
4530 "There are local ones at end of translation unit!");
4532 // Build a record containing some declaration references.
4533 RecordData SemaDeclRefs;
4534 if (SemaRef.StdNamespace || SemaRef.StdBadAlloc || SemaRef.StdAlignValT) {
4535 AddDeclRef(SemaRef.getStdNamespace(), SemaDeclRefs);
4536 AddDeclRef(SemaRef.getStdBadAlloc(), SemaDeclRefs);
4537 AddDeclRef(SemaRef.getStdAlignValT(), SemaDeclRefs);
4540 RecordData CUDASpecialDeclRefs;
4541 if (Context.getcudaConfigureCallDecl()) {
4542 AddDeclRef(Context.getcudaConfigureCallDecl(), CUDASpecialDeclRefs);
4545 // Build a record containing all of the known namespaces.
4546 RecordData KnownNamespaces;
4547 for (const auto &I : SemaRef.KnownNamespaces) {
4549 AddDeclRef(I.first, KnownNamespaces);
4552 // Build a record of all used, undefined objects that require definitions.
4553 RecordData UndefinedButUsed;
4555 SmallVector<std::pair<NamedDecl *, SourceLocation>, 16> Undefined;
4556 SemaRef.getUndefinedButUsed(Undefined);
4557 for (const auto &I : Undefined) {
4558 AddDeclRef(I.first, UndefinedButUsed);
4559 AddSourceLocation(I.second, UndefinedButUsed);
4562 // Build a record containing all delete-expressions that we would like to
4563 // analyze later in AST.
4564 RecordData DeleteExprsToAnalyze;
4566 for (const auto &DeleteExprsInfo :
4567 SemaRef.getMismatchingDeleteExpressions()) {
4568 AddDeclRef(DeleteExprsInfo.first, DeleteExprsToAnalyze);
4569 DeleteExprsToAnalyze.push_back(DeleteExprsInfo.second.size());
4570 for (const auto &DeleteLoc : DeleteExprsInfo.second) {
4571 AddSourceLocation(DeleteLoc.first, DeleteExprsToAnalyze);
4572 DeleteExprsToAnalyze.push_back(DeleteLoc.second);
4576 // Write the control block
4577 WriteControlBlock(PP, Context, isysroot, OutputFile);
4579 // Write the remaining AST contents.
4580 Stream.EnterSubblock(AST_BLOCK_ID, 5);
4582 // This is so that older clang versions, before the introduction
4583 // of the control block, can read and reject the newer PCH format.
4585 RecordData Record = {VERSION_MAJOR};
4586 Stream.EmitRecord(METADATA_OLD_FORMAT, Record);
4589 // Create a lexical update block containing all of the declarations in the
4590 // translation unit that do not come from other AST files.
4591 const TranslationUnitDecl *TU = Context.getTranslationUnitDecl();
4592 SmallVector<uint32_t, 128> NewGlobalKindDeclPairs;
4593 for (const auto *D : TU->noload_decls()) {
4594 if (!D->isFromASTFile()) {
4595 NewGlobalKindDeclPairs.push_back(D->getKind());
4596 NewGlobalKindDeclPairs.push_back(GetDeclRef(D));
4600 auto Abv = std::make_shared<BitCodeAbbrev>();
4601 Abv->Add(llvm::BitCodeAbbrevOp(TU_UPDATE_LEXICAL));
4602 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4603 unsigned TuUpdateLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv));
4605 RecordData::value_type Record[] = {TU_UPDATE_LEXICAL};
4606 Stream.EmitRecordWithBlob(TuUpdateLexicalAbbrev, Record,
4607 bytes(NewGlobalKindDeclPairs));
4610 // And a visible updates block for the translation unit.
4611 Abv = std::make_shared<BitCodeAbbrev>();
4612 Abv->Add(llvm::BitCodeAbbrevOp(UPDATE_VISIBLE));
4613 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4614 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4615 UpdateVisibleAbbrev = Stream.EmitAbbrev(std::move(Abv));
4616 WriteDeclContextVisibleUpdate(TU);
4618 // If we have any extern "C" names, write out a visible update for them.
4619 if (Context.ExternCContext)
4620 WriteDeclContextVisibleUpdate(Context.ExternCContext);
4622 // If the translation unit has an anonymous namespace, and we don't already
4623 // have an update block for it, write it as an update block.
4624 // FIXME: Why do we not do this if there's already an update block?
4625 if (NamespaceDecl *NS = TU->getAnonymousNamespace()) {
4626 ASTWriter::UpdateRecord &Record = DeclUpdates[TU];
4628 Record.push_back(DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, NS));
4631 // Add update records for all mangling numbers and static local numbers.
4632 // These aren't really update records, but this is a convenient way of
4633 // tagging this rare extra data onto the declarations.
4634 for (const auto &Number : Context.MangleNumbers)
4635 if (!Number.first->isFromASTFile())
4636 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_MANGLING_NUMBER,
4638 for (const auto &Number : Context.StaticLocalNumbers)
4639 if (!Number.first->isFromASTFile())
4640 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_STATIC_LOCAL_NUMBER,
4643 // Make sure visible decls, added to DeclContexts previously loaded from
4644 // an AST file, are registered for serialization. Likewise for template
4645 // specializations added to imported templates.
4646 for (const auto *I : DeclsToEmitEvenIfUnreferenced) {
4650 // Make sure all decls associated with an identifier are registered for
4651 // serialization, if we're storing decls with identifiers.
4652 if (!WritingModule || !getLangOpts().CPlusPlus) {
4653 llvm::SmallVector<const IdentifierInfo*, 256> IIs;
4654 for (const auto &ID : PP.getIdentifierTable()) {
4655 const IdentifierInfo *II = ID.second;
4656 if (!Chain || !II->isFromAST() || II->hasChangedSinceDeserialization())
4659 // Sort the identifiers to visit based on their name.
4660 std::sort(IIs.begin(), IIs.end(), llvm::less_ptr<IdentifierInfo>());
4661 for (const IdentifierInfo *II : IIs) {
4662 for (IdentifierResolver::iterator D = SemaRef.IdResolver.begin(II),
4663 DEnd = SemaRef.IdResolver.end();
4670 // For method pool in the module, if it contains an entry for a selector,
4671 // the entry should be complete, containing everything introduced by that
4672 // module and all modules it imports. It's possible that the entry is out of
4673 // date, so we need to pull in the new content here.
4675 // It's possible that updateOutOfDateSelector can update SelectorIDs. To be
4676 // safe, we copy all selectors out.
4677 llvm::SmallVector<Selector, 256> AllSelectors;
4678 for (auto &SelectorAndID : SelectorIDs)
4679 AllSelectors.push_back(SelectorAndID.first);
4680 for (auto &Selector : AllSelectors)
4681 SemaRef.updateOutOfDateSelector(Selector);
4683 // Form the record of special types.
4684 RecordData SpecialTypes;
4685 AddTypeRef(Context.getRawCFConstantStringType(), SpecialTypes);
4686 AddTypeRef(Context.getFILEType(), SpecialTypes);
4687 AddTypeRef(Context.getjmp_bufType(), SpecialTypes);
4688 AddTypeRef(Context.getsigjmp_bufType(), SpecialTypes);
4689 AddTypeRef(Context.ObjCIdRedefinitionType, SpecialTypes);
4690 AddTypeRef(Context.ObjCClassRedefinitionType, SpecialTypes);
4691 AddTypeRef(Context.ObjCSelRedefinitionType, SpecialTypes);
4692 AddTypeRef(Context.getucontext_tType(), SpecialTypes);
4695 // Write the mapping information describing our module dependencies and how
4696 // each of those modules were mapped into our own offset/ID space, so that
4697 // the reader can build the appropriate mapping to its own offset/ID space.
4698 // The map consists solely of a blob with the following format:
4699 // *(module-name-len:i16 module-name:len*i8
4700 // source-location-offset:i32
4701 // identifier-id:i32
4702 // preprocessed-entity-id:i32
4703 // macro-definition-id:i32
4706 // declaration-id:i32
4707 // c++-base-specifiers-id:i32
4710 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4711 Abbrev->Add(BitCodeAbbrevOp(MODULE_OFFSET_MAP));
4712 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4713 unsigned ModuleOffsetMapAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
4714 SmallString<2048> Buffer;
4716 llvm::raw_svector_ostream Out(Buffer);
4717 for (ModuleFile &M : Chain->ModuleMgr) {
4718 using namespace llvm::support;
4719 endian::Writer<little> LE(Out);
4720 StringRef FileName = M.FileName;
4721 LE.write<uint16_t>(FileName.size());
4722 Out.write(FileName.data(), FileName.size());
4724 // Note: if a base ID was uint max, it would not be possible to load
4725 // another module after it or have more than one entity inside it.
4726 uint32_t None = std::numeric_limits<uint32_t>::max();
4728 auto writeBaseIDOrNone = [&](uint32_t BaseID, bool ShouldWrite) {
4729 assert(BaseID < std::numeric_limits<uint32_t>::max() && "base id too high");
4731 LE.write<uint32_t>(BaseID);
4733 LE.write<uint32_t>(None);
4736 // These values should be unique within a chain, since they will be read
4737 // as keys into ContinuousRangeMaps.
4738 writeBaseIDOrNone(M.SLocEntryBaseOffset, M.LocalNumSLocEntries);
4739 writeBaseIDOrNone(M.BaseIdentifierID, M.LocalNumIdentifiers);
4740 writeBaseIDOrNone(M.BaseMacroID, M.LocalNumMacros);
4741 writeBaseIDOrNone(M.BasePreprocessedEntityID,
4742 M.NumPreprocessedEntities);
4743 writeBaseIDOrNone(M.BaseSubmoduleID, M.LocalNumSubmodules);
4744 writeBaseIDOrNone(M.BaseSelectorID, M.LocalNumSelectors);
4745 writeBaseIDOrNone(M.BaseDeclID, M.LocalNumDecls);
4746 writeBaseIDOrNone(M.BaseTypeIndex, M.LocalNumTypes);
4749 RecordData::value_type Record[] = {MODULE_OFFSET_MAP};
4750 Stream.EmitRecordWithBlob(ModuleOffsetMapAbbrev, Record,
4751 Buffer.data(), Buffer.size());
4754 RecordData DeclUpdatesOffsetsRecord;
4756 // Keep writing types, declarations, and declaration update records
4757 // until we've emitted all of them.
4758 Stream.EnterSubblock(DECLTYPES_BLOCK_ID, /*bits for abbreviations*/5);
4762 WriteDeclUpdatesBlocks(DeclUpdatesOffsetsRecord);
4763 while (!DeclTypesToEmit.empty()) {
4764 DeclOrType DOT = DeclTypesToEmit.front();
4765 DeclTypesToEmit.pop();
4767 WriteType(DOT.getType());
4769 WriteDecl(Context, DOT.getDecl());
4771 } while (!DeclUpdates.empty());
4774 DoneWritingDeclsAndTypes = true;
4776 // These things can only be done once we've written out decls and types.
4777 WriteTypeDeclOffsets();
4778 if (!DeclUpdatesOffsetsRecord.empty())
4779 Stream.EmitRecord(DECL_UPDATE_OFFSETS, DeclUpdatesOffsetsRecord);
4780 WriteFileDeclIDsMap();
4781 WriteSourceManagerBlock(Context.getSourceManager(), PP);
4783 WritePreprocessor(PP, isModule);
4784 WriteHeaderSearch(PP.getHeaderSearchInfo());
4785 WriteSelectors(SemaRef);
4786 WriteReferencedSelectorsPool(SemaRef);
4787 WriteLateParsedTemplates(SemaRef);
4788 WriteIdentifierTable(PP, SemaRef.IdResolver, isModule);
4789 WriteFPPragmaOptions(SemaRef.getFPOptions());
4790 WriteOpenCLExtensions(SemaRef);
4791 WriteOpenCLExtensionTypes(SemaRef);
4792 WriteOpenCLExtensionDecls(SemaRef);
4793 WriteCUDAPragmas(SemaRef);
4795 // If we're emitting a module, write out the submodule information.
4797 WriteSubmodules(WritingModule);
4799 Stream.EmitRecord(SPECIAL_TYPES, SpecialTypes);
4801 // Write the record containing external, unnamed definitions.
4802 if (!EagerlyDeserializedDecls.empty())
4803 Stream.EmitRecord(EAGERLY_DESERIALIZED_DECLS, EagerlyDeserializedDecls);
4805 if (!ModularCodegenDecls.empty())
4806 Stream.EmitRecord(MODULAR_CODEGEN_DECLS, ModularCodegenDecls);
4808 // Write the record containing tentative definitions.
4809 if (!TentativeDefinitions.empty())
4810 Stream.EmitRecord(TENTATIVE_DEFINITIONS, TentativeDefinitions);
4812 // Write the record containing unused file scoped decls.
4813 if (!UnusedFileScopedDecls.empty())
4814 Stream.EmitRecord(UNUSED_FILESCOPED_DECLS, UnusedFileScopedDecls);
4816 // Write the record containing weak undeclared identifiers.
4817 if (!WeakUndeclaredIdentifiers.empty())
4818 Stream.EmitRecord(WEAK_UNDECLARED_IDENTIFIERS,
4819 WeakUndeclaredIdentifiers);
4821 // Write the record containing ext_vector type names.
4822 if (!ExtVectorDecls.empty())
4823 Stream.EmitRecord(EXT_VECTOR_DECLS, ExtVectorDecls);
4825 // Write the record containing VTable uses information.
4826 if (!VTableUses.empty())
4827 Stream.EmitRecord(VTABLE_USES, VTableUses);
4829 // Write the record containing potentially unused local typedefs.
4830 if (!UnusedLocalTypedefNameCandidates.empty())
4831 Stream.EmitRecord(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES,
4832 UnusedLocalTypedefNameCandidates);
4834 // Write the record containing pending implicit instantiations.
4835 if (!PendingInstantiations.empty())
4836 Stream.EmitRecord(PENDING_IMPLICIT_INSTANTIATIONS, PendingInstantiations);
4838 // Write the record containing declaration references of Sema.
4839 if (!SemaDeclRefs.empty())
4840 Stream.EmitRecord(SEMA_DECL_REFS, SemaDeclRefs);
4842 // Write the record containing CUDA-specific declaration references.
4843 if (!CUDASpecialDeclRefs.empty())
4844 Stream.EmitRecord(CUDA_SPECIAL_DECL_REFS, CUDASpecialDeclRefs);
4846 // Write the delegating constructors.
4847 if (!DelegatingCtorDecls.empty())
4848 Stream.EmitRecord(DELEGATING_CTORS, DelegatingCtorDecls);
4850 // Write the known namespaces.
4851 if (!KnownNamespaces.empty())
4852 Stream.EmitRecord(KNOWN_NAMESPACES, KnownNamespaces);
4854 // Write the undefined internal functions and variables, and inline functions.
4855 if (!UndefinedButUsed.empty())
4856 Stream.EmitRecord(UNDEFINED_BUT_USED, UndefinedButUsed);
4858 if (!DeleteExprsToAnalyze.empty())
4859 Stream.EmitRecord(DELETE_EXPRS_TO_ANALYZE, DeleteExprsToAnalyze);
4861 // Write the visible updates to DeclContexts.
4862 for (auto *DC : UpdatedDeclContexts)
4863 WriteDeclContextVisibleUpdate(DC);
4865 if (!WritingModule) {
4866 // Write the submodules that were imported, if any.
4870 ModuleInfo(uint64_t ID, Module *M) : ID(ID), M(M) {}
4872 llvm::SmallVector<ModuleInfo, 64> Imports;
4873 for (const auto *I : Context.local_imports()) {
4874 assert(SubmoduleIDs.find(I->getImportedModule()) != SubmoduleIDs.end());
4875 Imports.push_back(ModuleInfo(SubmoduleIDs[I->getImportedModule()],
4876 I->getImportedModule()));
4879 if (!Imports.empty()) {
4880 auto Cmp = [](const ModuleInfo &A, const ModuleInfo &B) {
4883 auto Eq = [](const ModuleInfo &A, const ModuleInfo &B) {
4884 return A.ID == B.ID;
4887 // Sort and deduplicate module IDs.
4888 std::sort(Imports.begin(), Imports.end(), Cmp);
4889 Imports.erase(std::unique(Imports.begin(), Imports.end(), Eq),
4892 RecordData ImportedModules;
4893 for (const auto &Import : Imports) {
4894 ImportedModules.push_back(Import.ID);
4895 // FIXME: If the module has macros imported then later has declarations
4896 // imported, this location won't be the right one as a location for the
4897 // declaration imports.
4898 AddSourceLocation(PP.getModuleImportLoc(Import.M), ImportedModules);
4901 Stream.EmitRecord(IMPORTED_MODULES, ImportedModules);
4905 WriteObjCCategories();
4906 if(!WritingModule) {
4907 WriteOptimizePragmaOptions(SemaRef);
4908 WriteMSStructPragmaOptions(SemaRef);
4909 WriteMSPointersToMembersPragmaOptions(SemaRef);
4911 WritePackPragmaOptions(SemaRef);
4913 // Some simple statistics
4914 RecordData::value_type Record[] = {
4915 NumStatements, NumMacros, NumLexicalDeclContexts, NumVisibleDeclContexts};
4916 Stream.EmitRecord(STATISTICS, Record);
4919 // Write the module file extension blocks.
4920 for (const auto &ExtWriter : ModuleFileExtensionWriters)
4921 WriteModuleFileExtension(SemaRef, *ExtWriter);
4923 return writeUnhashedControlBlock(PP, Context);
4926 void ASTWriter::WriteDeclUpdatesBlocks(RecordDataImpl &OffsetsRecord) {
4927 if (DeclUpdates.empty())
4930 DeclUpdateMap LocalUpdates;
4931 LocalUpdates.swap(DeclUpdates);
4933 for (auto &DeclUpdate : LocalUpdates) {
4934 const Decl *D = DeclUpdate.first;
4936 bool HasUpdatedBody = false;
4937 RecordData RecordData;
4938 ASTRecordWriter Record(*this, RecordData);
4939 for (auto &Update : DeclUpdate.second) {
4940 DeclUpdateKind Kind = (DeclUpdateKind)Update.getKind();
4942 // An updated body is emitted last, so that the reader doesn't need
4943 // to skip over the lazy body to reach statements for other records.
4944 if (Kind == UPD_CXX_ADDED_FUNCTION_DEFINITION)
4945 HasUpdatedBody = true;
4947 Record.push_back(Kind);
4950 case UPD_CXX_ADDED_IMPLICIT_MEMBER:
4951 case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION:
4952 case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE:
4953 assert(Update.getDecl() && "no decl to add?");
4954 Record.push_back(GetDeclRef(Update.getDecl()));
4957 case UPD_CXX_ADDED_FUNCTION_DEFINITION:
4960 case UPD_CXX_INSTANTIATED_STATIC_DATA_MEMBER:
4961 Record.AddSourceLocation(Update.getLoc());
4964 case UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT:
4965 Record.AddStmt(const_cast<Expr *>(
4966 cast<ParmVarDecl>(Update.getDecl())->getDefaultArg()));
4969 case UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER:
4971 cast<FieldDecl>(Update.getDecl())->getInClassInitializer());
4974 case UPD_CXX_INSTANTIATED_CLASS_DEFINITION: {
4975 auto *RD = cast<CXXRecordDecl>(D);
4976 UpdatedDeclContexts.insert(RD->getPrimaryContext());
4977 Record.AddCXXDefinitionData(RD);
4978 Record.AddOffset(WriteDeclContextLexicalBlock(
4979 *Context, const_cast<CXXRecordDecl *>(RD)));
4981 // This state is sometimes updated by template instantiation, when we
4982 // switch from the specialization referring to the template declaration
4983 // to it referring to the template definition.
4984 if (auto *MSInfo = RD->getMemberSpecializationInfo()) {
4985 Record.push_back(MSInfo->getTemplateSpecializationKind());
4986 Record.AddSourceLocation(MSInfo->getPointOfInstantiation());
4988 auto *Spec = cast<ClassTemplateSpecializationDecl>(RD);
4989 Record.push_back(Spec->getTemplateSpecializationKind());
4990 Record.AddSourceLocation(Spec->getPointOfInstantiation());
4992 // The instantiation might have been resolved to a partial
4993 // specialization. If so, record which one.
4994 auto From = Spec->getInstantiatedFrom();
4995 if (auto PartialSpec =
4996 From.dyn_cast<ClassTemplatePartialSpecializationDecl*>()) {
4997 Record.push_back(true);
4998 Record.AddDeclRef(PartialSpec);
4999 Record.AddTemplateArgumentList(
5000 &Spec->getTemplateInstantiationArgs());
5002 Record.push_back(false);
5005 Record.push_back(RD->getTagKind());
5006 Record.AddSourceLocation(RD->getLocation());
5007 Record.AddSourceLocation(RD->getLocStart());
5008 Record.AddSourceRange(RD->getBraceRange());
5010 // Instantiation may change attributes; write them all out afresh.
5011 Record.push_back(D->hasAttrs());
5013 Record.AddAttributes(D->getAttrs());
5015 // FIXME: Ensure we don't get here for explicit instantiations.
5019 case UPD_CXX_RESOLVED_DTOR_DELETE:
5020 Record.AddDeclRef(Update.getDecl());
5023 case UPD_CXX_RESOLVED_EXCEPTION_SPEC:
5025 cast<FunctionDecl>(D)->getType()->castAs<FunctionProtoType>(),
5029 case UPD_CXX_DEDUCED_RETURN_TYPE:
5030 Record.push_back(GetOrCreateTypeID(Update.getType()));
5033 case UPD_DECL_MARKED_USED:
5036 case UPD_MANGLING_NUMBER:
5037 case UPD_STATIC_LOCAL_NUMBER:
5038 Record.push_back(Update.getNumber());
5041 case UPD_DECL_MARKED_OPENMP_THREADPRIVATE:
5042 Record.AddSourceRange(
5043 D->getAttr<OMPThreadPrivateDeclAttr>()->getRange());
5046 case UPD_DECL_MARKED_OPENMP_DECLARETARGET:
5047 Record.AddSourceRange(
5048 D->getAttr<OMPDeclareTargetDeclAttr>()->getRange());
5051 case UPD_DECL_EXPORTED:
5052 Record.push_back(getSubmoduleID(Update.getModule()));
5055 case UPD_ADDED_ATTR_TO_RECORD:
5056 Record.AddAttributes(llvm::makeArrayRef(Update.getAttr()));
5061 if (HasUpdatedBody) {
5062 const auto *Def = cast<FunctionDecl>(D);
5063 Record.push_back(UPD_CXX_ADDED_FUNCTION_DEFINITION);
5064 Record.push_back(Def->isInlined());
5065 Record.AddSourceLocation(Def->getInnerLocStart());
5066 Record.AddFunctionDefinition(Def);
5069 OffsetsRecord.push_back(GetDeclRef(D));
5070 OffsetsRecord.push_back(Record.Emit(DECL_UPDATES));
5074 void ASTWriter::AddSourceLocation(SourceLocation Loc, RecordDataImpl &Record) {
5075 uint32_t Raw = Loc.getRawEncoding();
5076 Record.push_back((Raw << 1) | (Raw >> 31));
5079 void ASTWriter::AddSourceRange(SourceRange Range, RecordDataImpl &Record) {
5080 AddSourceLocation(Range.getBegin(), Record);
5081 AddSourceLocation(Range.getEnd(), Record);
5084 void ASTRecordWriter::AddAPInt(const llvm::APInt &Value) {
5085 Record->push_back(Value.getBitWidth());
5086 const uint64_t *Words = Value.getRawData();
5087 Record->append(Words, Words + Value.getNumWords());
5090 void ASTRecordWriter::AddAPSInt(const llvm::APSInt &Value) {
5091 Record->push_back(Value.isUnsigned());
5095 void ASTRecordWriter::AddAPFloat(const llvm::APFloat &Value) {
5096 AddAPInt(Value.bitcastToAPInt());
5099 void ASTWriter::AddIdentifierRef(const IdentifierInfo *II, RecordDataImpl &Record) {
5100 Record.push_back(getIdentifierRef(II));
5103 IdentID ASTWriter::getIdentifierRef(const IdentifierInfo *II) {
5107 IdentID &ID = IdentifierIDs[II];
5113 MacroID ASTWriter::getMacroRef(MacroInfo *MI, const IdentifierInfo *Name) {
5114 // Don't emit builtin macros like __LINE__ to the AST file unless they
5115 // have been redefined by the header (in which case they are not
5117 if (!MI || MI->isBuiltinMacro())
5120 MacroID &ID = MacroIDs[MI];
5123 MacroInfoToEmitData Info = { Name, MI, ID };
5124 MacroInfosToEmit.push_back(Info);
5129 MacroID ASTWriter::getMacroID(MacroInfo *MI) {
5130 if (!MI || MI->isBuiltinMacro())
5133 assert(MacroIDs.find(MI) != MacroIDs.end() && "Macro not emitted!");
5134 return MacroIDs[MI];
5137 uint64_t ASTWriter::getMacroDirectivesOffset(const IdentifierInfo *Name) {
5138 return IdentMacroDirectivesOffsetMap.lookup(Name);
5141 void ASTRecordWriter::AddSelectorRef(const Selector SelRef) {
5142 Record->push_back(Writer->getSelectorRef(SelRef));
5145 SelectorID ASTWriter::getSelectorRef(Selector Sel) {
5146 if (Sel.getAsOpaquePtr() == nullptr) {
5150 SelectorID SID = SelectorIDs[Sel];
5151 if (SID == 0 && Chain) {
5152 // This might trigger a ReadSelector callback, which will set the ID for
5154 Chain->LoadSelector(Sel);
5155 SID = SelectorIDs[Sel];
5158 SID = NextSelectorID++;
5159 SelectorIDs[Sel] = SID;
5164 void ASTRecordWriter::AddCXXTemporary(const CXXTemporary *Temp) {
5165 AddDeclRef(Temp->getDestructor());
5168 void ASTRecordWriter::AddTemplateArgumentLocInfo(
5169 TemplateArgument::ArgKind Kind, const TemplateArgumentLocInfo &Arg) {
5171 case TemplateArgument::Expression:
5172 AddStmt(Arg.getAsExpr());
5174 case TemplateArgument::Type:
5175 AddTypeSourceInfo(Arg.getAsTypeSourceInfo());
5177 case TemplateArgument::Template:
5178 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5179 AddSourceLocation(Arg.getTemplateNameLoc());
5181 case TemplateArgument::TemplateExpansion:
5182 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5183 AddSourceLocation(Arg.getTemplateNameLoc());
5184 AddSourceLocation(Arg.getTemplateEllipsisLoc());
5186 case TemplateArgument::Null:
5187 case TemplateArgument::Integral:
5188 case TemplateArgument::Declaration:
5189 case TemplateArgument::NullPtr:
5190 case TemplateArgument::Pack:
5191 // FIXME: Is this right?
5196 void ASTRecordWriter::AddTemplateArgumentLoc(const TemplateArgumentLoc &Arg) {
5197 AddTemplateArgument(Arg.getArgument());
5199 if (Arg.getArgument().getKind() == TemplateArgument::Expression) {
5200 bool InfoHasSameExpr
5201 = Arg.getArgument().getAsExpr() == Arg.getLocInfo().getAsExpr();
5202 Record->push_back(InfoHasSameExpr);
5203 if (InfoHasSameExpr)
5204 return; // Avoid storing the same expr twice.
5206 AddTemplateArgumentLocInfo(Arg.getArgument().getKind(), Arg.getLocInfo());
5209 void ASTRecordWriter::AddTypeSourceInfo(TypeSourceInfo *TInfo) {
5211 AddTypeRef(QualType());
5215 AddTypeLoc(TInfo->getTypeLoc());
5218 void ASTRecordWriter::AddTypeLoc(TypeLoc TL) {
5219 AddTypeRef(TL.getType());
5221 TypeLocWriter TLW(*this);
5222 for (; !TL.isNull(); TL = TL.getNextTypeLoc())
5226 void ASTWriter::AddTypeRef(QualType T, RecordDataImpl &Record) {
5227 Record.push_back(GetOrCreateTypeID(T));
5230 TypeID ASTWriter::GetOrCreateTypeID(QualType T) {
5232 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5235 assert(!T.getLocalFastQualifiers());
5237 TypeIdx &Idx = TypeIdxs[T];
5238 if (Idx.getIndex() == 0) {
5239 if (DoneWritingDeclsAndTypes) {
5240 assert(0 && "New type seen after serializing all the types to emit!");
5244 // We haven't seen this type before. Assign it a new ID and put it
5245 // into the queue of types to emit.
5246 Idx = TypeIdx(NextTypeID++);
5247 DeclTypesToEmit.push(T);
5253 TypeID ASTWriter::getTypeID(QualType T) const {
5255 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5258 assert(!T.getLocalFastQualifiers());
5260 TypeIdxMap::const_iterator I = TypeIdxs.find(T);
5261 assert(I != TypeIdxs.end() && "Type not emitted!");
5266 void ASTWriter::AddDeclRef(const Decl *D, RecordDataImpl &Record) {
5267 Record.push_back(GetDeclRef(D));
5270 DeclID ASTWriter::GetDeclRef(const Decl *D) {
5271 assert(WritingAST && "Cannot request a declaration ID before AST writing");
5277 // If D comes from an AST file, its declaration ID is already known and
5279 if (D->isFromASTFile())
5280 return D->getGlobalID();
5282 assert(!(reinterpret_cast<uintptr_t>(D) & 0x01) && "Invalid decl pointer");
5283 DeclID &ID = DeclIDs[D];
5285 if (DoneWritingDeclsAndTypes) {
5286 assert(0 && "New decl seen after serializing all the decls to emit!");
5290 // We haven't seen this declaration before. Give it a new ID and
5291 // enqueue it in the list of declarations to emit.
5293 DeclTypesToEmit.push(const_cast<Decl *>(D));
5299 DeclID ASTWriter::getDeclID(const Decl *D) {
5303 // If D comes from an AST file, its declaration ID is already known and
5305 if (D->isFromASTFile())
5306 return D->getGlobalID();
5308 assert(DeclIDs.find(D) != DeclIDs.end() && "Declaration not emitted!");
5312 void ASTWriter::associateDeclWithFile(const Decl *D, DeclID ID) {
5316 SourceLocation Loc = D->getLocation();
5317 if (Loc.isInvalid())
5320 // We only keep track of the file-level declarations of each file.
5321 if (!D->getLexicalDeclContext()->isFileContext())
5323 // FIXME: ParmVarDecls that are part of a function type of a parameter of
5324 // a function/objc method, should not have TU as lexical context.
5325 if (isa<ParmVarDecl>(D))
5328 SourceManager &SM = Context->getSourceManager();
5329 SourceLocation FileLoc = SM.getFileLoc(Loc);
5330 assert(SM.isLocalSourceLocation(FileLoc));
5333 std::tie(FID, Offset) = SM.getDecomposedLoc(FileLoc);
5334 if (FID.isInvalid())
5336 assert(SM.getSLocEntry(FID).isFile());
5338 DeclIDInFileInfo *&Info = FileDeclIDs[FID];
5340 Info = new DeclIDInFileInfo();
5342 std::pair<unsigned, serialization::DeclID> LocDecl(Offset, ID);
5343 LocDeclIDsTy &Decls = Info->DeclIDs;
5345 if (Decls.empty() || Decls.back().first <= Offset) {
5346 Decls.push_back(LocDecl);
5350 LocDeclIDsTy::iterator I =
5351 std::upper_bound(Decls.begin(), Decls.end(), LocDecl, llvm::less_first());
5353 Decls.insert(I, LocDecl);
5356 void ASTRecordWriter::AddDeclarationName(DeclarationName Name) {
5357 // FIXME: Emit a stable enum for NameKind. 0 = Identifier etc.
5358 Record->push_back(Name.getNameKind());
5359 switch (Name.getNameKind()) {
5360 case DeclarationName::Identifier:
5361 AddIdentifierRef(Name.getAsIdentifierInfo());
5364 case DeclarationName::ObjCZeroArgSelector:
5365 case DeclarationName::ObjCOneArgSelector:
5366 case DeclarationName::ObjCMultiArgSelector:
5367 AddSelectorRef(Name.getObjCSelector());
5370 case DeclarationName::CXXConstructorName:
5371 case DeclarationName::CXXDestructorName:
5372 case DeclarationName::CXXConversionFunctionName:
5373 AddTypeRef(Name.getCXXNameType());
5376 case DeclarationName::CXXDeductionGuideName:
5377 AddDeclRef(Name.getCXXDeductionGuideTemplate());
5380 case DeclarationName::CXXOperatorName:
5381 Record->push_back(Name.getCXXOverloadedOperator());
5384 case DeclarationName::CXXLiteralOperatorName:
5385 AddIdentifierRef(Name.getCXXLiteralIdentifier());
5388 case DeclarationName::CXXUsingDirective:
5389 // No extra data to emit
5394 unsigned ASTWriter::getAnonymousDeclarationNumber(const NamedDecl *D) {
5395 assert(needsAnonymousDeclarationNumber(D) &&
5396 "expected an anonymous declaration");
5398 // Number the anonymous declarations within this context, if we've not
5400 auto It = AnonymousDeclarationNumbers.find(D);
5401 if (It == AnonymousDeclarationNumbers.end()) {
5402 auto *DC = D->getLexicalDeclContext();
5403 numberAnonymousDeclsWithin(DC, [&](const NamedDecl *ND, unsigned Number) {
5404 AnonymousDeclarationNumbers[ND] = Number;
5407 It = AnonymousDeclarationNumbers.find(D);
5408 assert(It != AnonymousDeclarationNumbers.end() &&
5409 "declaration not found within its lexical context");
5415 void ASTRecordWriter::AddDeclarationNameLoc(const DeclarationNameLoc &DNLoc,
5416 DeclarationName Name) {
5417 switch (Name.getNameKind()) {
5418 case DeclarationName::CXXConstructorName:
5419 case DeclarationName::CXXDestructorName:
5420 case DeclarationName::CXXConversionFunctionName:
5421 AddTypeSourceInfo(DNLoc.NamedType.TInfo);
5424 case DeclarationName::CXXOperatorName:
5425 AddSourceLocation(SourceLocation::getFromRawEncoding(
5426 DNLoc.CXXOperatorName.BeginOpNameLoc));
5428 SourceLocation::getFromRawEncoding(DNLoc.CXXOperatorName.EndOpNameLoc));
5431 case DeclarationName::CXXLiteralOperatorName:
5432 AddSourceLocation(SourceLocation::getFromRawEncoding(
5433 DNLoc.CXXLiteralOperatorName.OpNameLoc));
5436 case DeclarationName::Identifier:
5437 case DeclarationName::ObjCZeroArgSelector:
5438 case DeclarationName::ObjCOneArgSelector:
5439 case DeclarationName::ObjCMultiArgSelector:
5440 case DeclarationName::CXXUsingDirective:
5441 case DeclarationName::CXXDeductionGuideName:
5446 void ASTRecordWriter::AddDeclarationNameInfo(
5447 const DeclarationNameInfo &NameInfo) {
5448 AddDeclarationName(NameInfo.getName());
5449 AddSourceLocation(NameInfo.getLoc());
5450 AddDeclarationNameLoc(NameInfo.getInfo(), NameInfo.getName());
5453 void ASTRecordWriter::AddQualifierInfo(const QualifierInfo &Info) {
5454 AddNestedNameSpecifierLoc(Info.QualifierLoc);
5455 Record->push_back(Info.NumTemplParamLists);
5456 for (unsigned i = 0, e = Info.NumTemplParamLists; i != e; ++i)
5457 AddTemplateParameterList(Info.TemplParamLists[i]);
5460 void ASTRecordWriter::AddNestedNameSpecifier(NestedNameSpecifier *NNS) {
5461 // Nested name specifiers usually aren't too long. I think that 8 would
5462 // typically accommodate the vast majority.
5463 SmallVector<NestedNameSpecifier *, 8> NestedNames;
5465 // Push each of the NNS's onto a stack for serialization in reverse order.
5467 NestedNames.push_back(NNS);
5468 NNS = NNS->getPrefix();
5471 Record->push_back(NestedNames.size());
5472 while(!NestedNames.empty()) {
5473 NNS = NestedNames.pop_back_val();
5474 NestedNameSpecifier::SpecifierKind Kind = NNS->getKind();
5475 Record->push_back(Kind);
5477 case NestedNameSpecifier::Identifier:
5478 AddIdentifierRef(NNS->getAsIdentifier());
5481 case NestedNameSpecifier::Namespace:
5482 AddDeclRef(NNS->getAsNamespace());
5485 case NestedNameSpecifier::NamespaceAlias:
5486 AddDeclRef(NNS->getAsNamespaceAlias());
5489 case NestedNameSpecifier::TypeSpec:
5490 case NestedNameSpecifier::TypeSpecWithTemplate:
5491 AddTypeRef(QualType(NNS->getAsType(), 0));
5492 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5495 case NestedNameSpecifier::Global:
5496 // Don't need to write an associated value.
5499 case NestedNameSpecifier::Super:
5500 AddDeclRef(NNS->getAsRecordDecl());
5506 void ASTRecordWriter::AddNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS) {
5507 // Nested name specifiers usually aren't too long. I think that 8 would
5508 // typically accommodate the vast majority.
5509 SmallVector<NestedNameSpecifierLoc , 8> NestedNames;
5511 // Push each of the nested-name-specifiers's onto a stack for
5512 // serialization in reverse order.
5514 NestedNames.push_back(NNS);
5515 NNS = NNS.getPrefix();
5518 Record->push_back(NestedNames.size());
5519 while(!NestedNames.empty()) {
5520 NNS = NestedNames.pop_back_val();
5521 NestedNameSpecifier::SpecifierKind Kind
5522 = NNS.getNestedNameSpecifier()->getKind();
5523 Record->push_back(Kind);
5525 case NestedNameSpecifier::Identifier:
5526 AddIdentifierRef(NNS.getNestedNameSpecifier()->getAsIdentifier());
5527 AddSourceRange(NNS.getLocalSourceRange());
5530 case NestedNameSpecifier::Namespace:
5531 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespace());
5532 AddSourceRange(NNS.getLocalSourceRange());
5535 case NestedNameSpecifier::NamespaceAlias:
5536 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespaceAlias());
5537 AddSourceRange(NNS.getLocalSourceRange());
5540 case NestedNameSpecifier::TypeSpec:
5541 case NestedNameSpecifier::TypeSpecWithTemplate:
5542 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5543 AddTypeLoc(NNS.getTypeLoc());
5544 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5547 case NestedNameSpecifier::Global:
5548 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5551 case NestedNameSpecifier::Super:
5552 AddDeclRef(NNS.getNestedNameSpecifier()->getAsRecordDecl());
5553 AddSourceRange(NNS.getLocalSourceRange());
5559 void ASTRecordWriter::AddTemplateName(TemplateName Name) {
5560 TemplateName::NameKind Kind = Name.getKind();
5561 Record->push_back(Kind);
5563 case TemplateName::Template:
5564 AddDeclRef(Name.getAsTemplateDecl());
5567 case TemplateName::OverloadedTemplate: {
5568 OverloadedTemplateStorage *OvT = Name.getAsOverloadedTemplate();
5569 Record->push_back(OvT->size());
5570 for (const auto &I : *OvT)
5575 case TemplateName::QualifiedTemplate: {
5576 QualifiedTemplateName *QualT = Name.getAsQualifiedTemplateName();
5577 AddNestedNameSpecifier(QualT->getQualifier());
5578 Record->push_back(QualT->hasTemplateKeyword());
5579 AddDeclRef(QualT->getTemplateDecl());
5583 case TemplateName::DependentTemplate: {
5584 DependentTemplateName *DepT = Name.getAsDependentTemplateName();
5585 AddNestedNameSpecifier(DepT->getQualifier());
5586 Record->push_back(DepT->isIdentifier());
5587 if (DepT->isIdentifier())
5588 AddIdentifierRef(DepT->getIdentifier());
5590 Record->push_back(DepT->getOperator());
5594 case TemplateName::SubstTemplateTemplateParm: {
5595 SubstTemplateTemplateParmStorage *subst
5596 = Name.getAsSubstTemplateTemplateParm();
5597 AddDeclRef(subst->getParameter());
5598 AddTemplateName(subst->getReplacement());
5602 case TemplateName::SubstTemplateTemplateParmPack: {
5603 SubstTemplateTemplateParmPackStorage *SubstPack
5604 = Name.getAsSubstTemplateTemplateParmPack();
5605 AddDeclRef(SubstPack->getParameterPack());
5606 AddTemplateArgument(SubstPack->getArgumentPack());
5612 void ASTRecordWriter::AddTemplateArgument(const TemplateArgument &Arg) {
5613 Record->push_back(Arg.getKind());
5614 switch (Arg.getKind()) {
5615 case TemplateArgument::Null:
5617 case TemplateArgument::Type:
5618 AddTypeRef(Arg.getAsType());
5620 case TemplateArgument::Declaration:
5621 AddDeclRef(Arg.getAsDecl());
5622 AddTypeRef(Arg.getParamTypeForDecl());
5624 case TemplateArgument::NullPtr:
5625 AddTypeRef(Arg.getNullPtrType());
5627 case TemplateArgument::Integral:
5628 AddAPSInt(Arg.getAsIntegral());
5629 AddTypeRef(Arg.getIntegralType());
5631 case TemplateArgument::Template:
5632 AddTemplateName(Arg.getAsTemplateOrTemplatePattern());
5634 case TemplateArgument::TemplateExpansion:
5635 AddTemplateName(Arg.getAsTemplateOrTemplatePattern());
5636 if (Optional<unsigned> NumExpansions = Arg.getNumTemplateExpansions())
5637 Record->push_back(*NumExpansions + 1);
5639 Record->push_back(0);
5641 case TemplateArgument::Expression:
5642 AddStmt(Arg.getAsExpr());
5644 case TemplateArgument::Pack:
5645 Record->push_back(Arg.pack_size());
5646 for (const auto &P : Arg.pack_elements())
5647 AddTemplateArgument(P);
5652 void ASTRecordWriter::AddTemplateParameterList(
5653 const TemplateParameterList *TemplateParams) {
5654 assert(TemplateParams && "No TemplateParams!");
5655 AddSourceLocation(TemplateParams->getTemplateLoc());
5656 AddSourceLocation(TemplateParams->getLAngleLoc());
5657 AddSourceLocation(TemplateParams->getRAngleLoc());
5659 Record->push_back(TemplateParams->size());
5660 for (const auto &P : *TemplateParams)
5664 /// \brief Emit a template argument list.
5665 void ASTRecordWriter::AddTemplateArgumentList(
5666 const TemplateArgumentList *TemplateArgs) {
5667 assert(TemplateArgs && "No TemplateArgs!");
5668 Record->push_back(TemplateArgs->size());
5669 for (int i = 0, e = TemplateArgs->size(); i != e; ++i)
5670 AddTemplateArgument(TemplateArgs->get(i));
5673 void ASTRecordWriter::AddASTTemplateArgumentListInfo(
5674 const ASTTemplateArgumentListInfo *ASTTemplArgList) {
5675 assert(ASTTemplArgList && "No ASTTemplArgList!");
5676 AddSourceLocation(ASTTemplArgList->LAngleLoc);
5677 AddSourceLocation(ASTTemplArgList->RAngleLoc);
5678 Record->push_back(ASTTemplArgList->NumTemplateArgs);
5679 const TemplateArgumentLoc *TemplArgs = ASTTemplArgList->getTemplateArgs();
5680 for (int i = 0, e = ASTTemplArgList->NumTemplateArgs; i != e; ++i)
5681 AddTemplateArgumentLoc(TemplArgs[i]);
5684 void ASTRecordWriter::AddUnresolvedSet(const ASTUnresolvedSet &Set) {
5685 Record->push_back(Set.size());
5686 for (ASTUnresolvedSet::const_iterator
5687 I = Set.begin(), E = Set.end(); I != E; ++I) {
5688 AddDeclRef(I.getDecl());
5689 Record->push_back(I.getAccess());
5693 // FIXME: Move this out of the main ASTRecordWriter interface.
5694 void ASTRecordWriter::AddCXXBaseSpecifier(const CXXBaseSpecifier &Base) {
5695 Record->push_back(Base.isVirtual());
5696 Record->push_back(Base.isBaseOfClass());
5697 Record->push_back(Base.getAccessSpecifierAsWritten());
5698 Record->push_back(Base.getInheritConstructors());
5699 AddTypeSourceInfo(Base.getTypeSourceInfo());
5700 AddSourceRange(Base.getSourceRange());
5701 AddSourceLocation(Base.isPackExpansion()? Base.getEllipsisLoc()
5702 : SourceLocation());
5705 static uint64_t EmitCXXBaseSpecifiers(ASTWriter &W,
5706 ArrayRef<CXXBaseSpecifier> Bases) {
5707 ASTWriter::RecordData Record;
5708 ASTRecordWriter Writer(W, Record);
5709 Writer.push_back(Bases.size());
5711 for (auto &Base : Bases)
5712 Writer.AddCXXBaseSpecifier(Base);
5714 return Writer.Emit(serialization::DECL_CXX_BASE_SPECIFIERS);
5717 // FIXME: Move this out of the main ASTRecordWriter interface.
5718 void ASTRecordWriter::AddCXXBaseSpecifiers(ArrayRef<CXXBaseSpecifier> Bases) {
5719 AddOffset(EmitCXXBaseSpecifiers(*Writer, Bases));
5723 EmitCXXCtorInitializers(ASTWriter &W,
5724 ArrayRef<CXXCtorInitializer *> CtorInits) {
5725 ASTWriter::RecordData Record;
5726 ASTRecordWriter Writer(W, Record);
5727 Writer.push_back(CtorInits.size());
5729 for (auto *Init : CtorInits) {
5730 if (Init->isBaseInitializer()) {
5731 Writer.push_back(CTOR_INITIALIZER_BASE);
5732 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5733 Writer.push_back(Init->isBaseVirtual());
5734 } else if (Init->isDelegatingInitializer()) {
5735 Writer.push_back(CTOR_INITIALIZER_DELEGATING);
5736 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5737 } else if (Init->isMemberInitializer()){
5738 Writer.push_back(CTOR_INITIALIZER_MEMBER);
5739 Writer.AddDeclRef(Init->getMember());
5741 Writer.push_back(CTOR_INITIALIZER_INDIRECT_MEMBER);
5742 Writer.AddDeclRef(Init->getIndirectMember());
5745 Writer.AddSourceLocation(Init->getMemberLocation());
5746 Writer.AddStmt(Init->getInit());
5747 Writer.AddSourceLocation(Init->getLParenLoc());
5748 Writer.AddSourceLocation(Init->getRParenLoc());
5749 Writer.push_back(Init->isWritten());
5750 if (Init->isWritten())
5751 Writer.push_back(Init->getSourceOrder());
5754 return Writer.Emit(serialization::DECL_CXX_CTOR_INITIALIZERS);
5757 // FIXME: Move this out of the main ASTRecordWriter interface.
5758 void ASTRecordWriter::AddCXXCtorInitializers(
5759 ArrayRef<CXXCtorInitializer *> CtorInits) {
5760 AddOffset(EmitCXXCtorInitializers(*Writer, CtorInits));
5763 void ASTRecordWriter::AddCXXDefinitionData(const CXXRecordDecl *D) {
5764 auto &Data = D->data();
5765 Record->push_back(Data.IsLambda);
5766 Record->push_back(Data.UserDeclaredConstructor);
5767 Record->push_back(Data.UserDeclaredSpecialMembers);
5768 Record->push_back(Data.Aggregate);
5769 Record->push_back(Data.PlainOldData);
5770 Record->push_back(Data.Empty);
5771 Record->push_back(Data.Polymorphic);
5772 Record->push_back(Data.Abstract);
5773 Record->push_back(Data.IsStandardLayout);
5774 Record->push_back(Data.HasNoNonEmptyBases);
5775 Record->push_back(Data.HasPrivateFields);
5776 Record->push_back(Data.HasProtectedFields);
5777 Record->push_back(Data.HasPublicFields);
5778 Record->push_back(Data.HasMutableFields);
5779 Record->push_back(Data.HasVariantMembers);
5780 Record->push_back(Data.HasOnlyCMembers);
5781 Record->push_back(Data.HasInClassInitializer);
5782 Record->push_back(Data.HasUninitializedReferenceMember);
5783 Record->push_back(Data.HasUninitializedFields);
5784 Record->push_back(Data.HasInheritedConstructor);
5785 Record->push_back(Data.HasInheritedAssignment);
5786 Record->push_back(Data.NeedOverloadResolutionForMoveConstructor);
5787 Record->push_back(Data.NeedOverloadResolutionForMoveAssignment);
5788 Record->push_back(Data.NeedOverloadResolutionForDestructor);
5789 Record->push_back(Data.DefaultedMoveConstructorIsDeleted);
5790 Record->push_back(Data.DefaultedMoveAssignmentIsDeleted);
5791 Record->push_back(Data.DefaultedDestructorIsDeleted);
5792 Record->push_back(Data.HasTrivialSpecialMembers);
5793 Record->push_back(Data.DeclaredNonTrivialSpecialMembers);
5794 Record->push_back(Data.HasIrrelevantDestructor);
5795 Record->push_back(Data.HasConstexprNonCopyMoveConstructor);
5796 Record->push_back(Data.HasDefaultedDefaultConstructor);
5797 Record->push_back(Data.DefaultedDefaultConstructorIsConstexpr);
5798 Record->push_back(Data.HasConstexprDefaultConstructor);
5799 Record->push_back(Data.HasNonLiteralTypeFieldsOrBases);
5800 Record->push_back(Data.ComputedVisibleConversions);
5801 Record->push_back(Data.UserProvidedDefaultConstructor);
5802 Record->push_back(Data.DeclaredSpecialMembers);
5803 Record->push_back(Data.ImplicitCopyConstructorCanHaveConstParamForVBase);
5804 Record->push_back(Data.ImplicitCopyConstructorCanHaveConstParamForNonVBase);
5805 Record->push_back(Data.ImplicitCopyAssignmentHasConstParam);
5806 Record->push_back(Data.HasDeclaredCopyConstructorWithConstParam);
5807 Record->push_back(Data.HasDeclaredCopyAssignmentWithConstParam);
5809 // getODRHash will compute the ODRHash if it has not been previously computed.
5810 Record->push_back(D->getODRHash());
5811 bool ModulesDebugInfo = Writer->Context->getLangOpts().ModulesDebugInfo &&
5812 Writer->WritingModule && !D->isDependentType();
5813 Record->push_back(ModulesDebugInfo);
5814 if (ModulesDebugInfo)
5815 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(D));
5817 // IsLambda bit is already saved.
5819 Record->push_back(Data.NumBases);
5820 if (Data.NumBases > 0)
5821 AddCXXBaseSpecifiers(Data.bases());
5823 // FIXME: Make VBases lazily computed when needed to avoid storing them.
5824 Record->push_back(Data.NumVBases);
5825 if (Data.NumVBases > 0)
5826 AddCXXBaseSpecifiers(Data.vbases());
5828 AddUnresolvedSet(Data.Conversions.get(*Writer->Context));
5829 AddUnresolvedSet(Data.VisibleConversions.get(*Writer->Context));
5830 // Data.Definition is the owning decl, no need to write it.
5831 AddDeclRef(D->getFirstFriend());
5833 // Add lambda-specific data.
5834 if (Data.IsLambda) {
5835 auto &Lambda = D->getLambdaData();
5836 Record->push_back(Lambda.Dependent);
5837 Record->push_back(Lambda.IsGenericLambda);
5838 Record->push_back(Lambda.CaptureDefault);
5839 Record->push_back(Lambda.NumCaptures);
5840 Record->push_back(Lambda.NumExplicitCaptures);
5841 Record->push_back(Lambda.ManglingNumber);
5842 AddDeclRef(D->getLambdaContextDecl());
5843 AddTypeSourceInfo(Lambda.MethodTyInfo);
5844 for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
5845 const LambdaCapture &Capture = Lambda.Captures[I];
5846 AddSourceLocation(Capture.getLocation());
5847 Record->push_back(Capture.isImplicit());
5848 Record->push_back(Capture.getCaptureKind());
5849 switch (Capture.getCaptureKind()) {
5857 Capture.capturesVariable() ? Capture.getCapturedVar() : nullptr;
5859 AddSourceLocation(Capture.isPackExpansion() ? Capture.getEllipsisLoc()
5860 : SourceLocation());
5867 void ASTWriter::ReaderInitialized(ASTReader *Reader) {
5868 assert(Reader && "Cannot remove chain");
5869 assert((!Chain || Chain == Reader) && "Cannot replace chain");
5870 assert(FirstDeclID == NextDeclID &&
5871 FirstTypeID == NextTypeID &&
5872 FirstIdentID == NextIdentID &&
5873 FirstMacroID == NextMacroID &&
5874 FirstSubmoduleID == NextSubmoduleID &&
5875 FirstSelectorID == NextSelectorID &&
5876 "Setting chain after writing has started.");
5880 // Note, this will get called multiple times, once one the reader starts up
5881 // and again each time it's done reading a PCH or module.
5882 FirstDeclID = NUM_PREDEF_DECL_IDS + Chain->getTotalNumDecls();
5883 FirstTypeID = NUM_PREDEF_TYPE_IDS + Chain->getTotalNumTypes();
5884 FirstIdentID = NUM_PREDEF_IDENT_IDS + Chain->getTotalNumIdentifiers();
5885 FirstMacroID = NUM_PREDEF_MACRO_IDS + Chain->getTotalNumMacros();
5886 FirstSubmoduleID = NUM_PREDEF_SUBMODULE_IDS + Chain->getTotalNumSubmodules();
5887 FirstSelectorID = NUM_PREDEF_SELECTOR_IDS + Chain->getTotalNumSelectors();
5888 NextDeclID = FirstDeclID;
5889 NextTypeID = FirstTypeID;
5890 NextIdentID = FirstIdentID;
5891 NextMacroID = FirstMacroID;
5892 NextSelectorID = FirstSelectorID;
5893 NextSubmoduleID = FirstSubmoduleID;
5896 void ASTWriter::IdentifierRead(IdentID ID, IdentifierInfo *II) {
5897 // Always keep the highest ID. See \p TypeRead() for more information.
5898 IdentID &StoredID = IdentifierIDs[II];
5903 void ASTWriter::MacroRead(serialization::MacroID ID, MacroInfo *MI) {
5904 // Always keep the highest ID. See \p TypeRead() for more information.
5905 MacroID &StoredID = MacroIDs[MI];
5910 void ASTWriter::TypeRead(TypeIdx Idx, QualType T) {
5911 // Always take the highest-numbered type index. This copes with an interesting
5912 // case for chained AST writing where we schedule writing the type and then,
5913 // later, deserialize the type from another AST. In this case, we want to
5914 // keep the higher-numbered entry so that we can properly write it out to
5916 TypeIdx &StoredIdx = TypeIdxs[T];
5917 if (Idx.getIndex() >= StoredIdx.getIndex())
5921 void ASTWriter::SelectorRead(SelectorID ID, Selector S) {
5922 // Always keep the highest ID. See \p TypeRead() for more information.
5923 SelectorID &StoredID = SelectorIDs[S];
5928 void ASTWriter::MacroDefinitionRead(serialization::PreprocessedEntityID ID,
5929 MacroDefinitionRecord *MD) {
5930 assert(MacroDefinitions.find(MD) == MacroDefinitions.end());
5931 MacroDefinitions[MD] = ID;
5934 void ASTWriter::ModuleRead(serialization::SubmoduleID ID, Module *Mod) {
5935 assert(SubmoduleIDs.find(Mod) == SubmoduleIDs.end());
5936 SubmoduleIDs[Mod] = ID;
5939 void ASTWriter::CompletedTagDefinition(const TagDecl *D) {
5940 if (Chain && Chain->isProcessingUpdateRecords()) return;
5941 assert(D->isCompleteDefinition());
5942 assert(!WritingAST && "Already writing the AST!");
5943 if (auto *RD = dyn_cast<CXXRecordDecl>(D)) {
5944 // We are interested when a PCH decl is modified.
5945 if (RD->isFromASTFile()) {
5946 // A forward reference was mutated into a definition. Rewrite it.
5947 // FIXME: This happens during template instantiation, should we
5948 // have created a new definition decl instead ?
5949 assert(isTemplateInstantiation(RD->getTemplateSpecializationKind()) &&
5950 "completed a tag from another module but not by instantiation?");
5951 DeclUpdates[RD].push_back(
5952 DeclUpdate(UPD_CXX_INSTANTIATED_CLASS_DEFINITION));
5957 static bool isImportedDeclContext(ASTReader *Chain, const Decl *D) {
5958 if (D->isFromASTFile())
5961 // The predefined __va_list_tag struct is imported if we imported any decls.
5962 // FIXME: This is a gross hack.
5963 return D == D->getASTContext().getVaListTagDecl();
5966 void ASTWriter::AddedVisibleDecl(const DeclContext *DC, const Decl *D) {
5967 if (Chain && Chain->isProcessingUpdateRecords()) return;
5968 assert(DC->isLookupContext() &&
5969 "Should not add lookup results to non-lookup contexts!");
5971 // TU is handled elsewhere.
5972 if (isa<TranslationUnitDecl>(DC))
5975 // Namespaces are handled elsewhere, except for template instantiations of
5976 // FunctionTemplateDecls in namespaces. We are interested in cases where the
5977 // local instantiations are added to an imported context. Only happens when
5978 // adding ADL lookup candidates, for example templated friends.
5979 if (isa<NamespaceDecl>(DC) && D->getFriendObjectKind() == Decl::FOK_None &&
5980 !isa<FunctionTemplateDecl>(D))
5983 // We're only interested in cases where a local declaration is added to an
5984 // imported context.
5985 if (D->isFromASTFile() || !isImportedDeclContext(Chain, cast<Decl>(DC)))
5988 assert(DC == DC->getPrimaryContext() && "added to non-primary context");
5989 assert(!getDefinitiveDeclContext(DC) && "DeclContext not definitive!");
5990 assert(!WritingAST && "Already writing the AST!");
5991 if (UpdatedDeclContexts.insert(DC) && !cast<Decl>(DC)->isFromASTFile()) {
5992 // We're adding a visible declaration to a predefined decl context. Ensure
5993 // that we write out all of its lookup results so we don't get a nasty
5994 // surprise when we try to emit its lookup table.
5995 for (auto *Child : DC->decls())
5996 DeclsToEmitEvenIfUnreferenced.push_back(Child);
5998 DeclsToEmitEvenIfUnreferenced.push_back(D);
6001 void ASTWriter::AddedCXXImplicitMember(const CXXRecordDecl *RD, const Decl *D) {
6002 if (Chain && Chain->isProcessingUpdateRecords()) return;
6003 assert(D->isImplicit());
6005 // We're only interested in cases where a local declaration is added to an
6006 // imported context.
6007 if (D->isFromASTFile() || !isImportedDeclContext(Chain, RD))
6010 if (!isa<CXXMethodDecl>(D))
6013 // A decl coming from PCH was modified.
6014 assert(RD->isCompleteDefinition());
6015 assert(!WritingAST && "Already writing the AST!");
6016 DeclUpdates[RD].push_back(DeclUpdate(UPD_CXX_ADDED_IMPLICIT_MEMBER, D));
6019 void ASTWriter::ResolvedExceptionSpec(const FunctionDecl *FD) {
6020 if (Chain && Chain->isProcessingUpdateRecords()) return;
6021 assert(!DoneWritingDeclsAndTypes && "Already done writing updates!");
6023 Chain->forEachImportedKeyDecl(FD, [&](const Decl *D) {
6024 // If we don't already know the exception specification for this redecl
6025 // chain, add an update record for it.
6026 if (isUnresolvedExceptionSpec(cast<FunctionDecl>(D)
6028 ->castAs<FunctionProtoType>()
6029 ->getExceptionSpecType()))
6030 DeclUpdates[D].push_back(UPD_CXX_RESOLVED_EXCEPTION_SPEC);
6034 void ASTWriter::DeducedReturnType(const FunctionDecl *FD, QualType ReturnType) {
6035 if (Chain && Chain->isProcessingUpdateRecords()) return;
6036 assert(!WritingAST && "Already writing the AST!");
6038 Chain->forEachImportedKeyDecl(FD, [&](const Decl *D) {
6039 DeclUpdates[D].push_back(
6040 DeclUpdate(UPD_CXX_DEDUCED_RETURN_TYPE, ReturnType));
6044 void ASTWriter::ResolvedOperatorDelete(const CXXDestructorDecl *DD,
6045 const FunctionDecl *Delete) {
6046 if (Chain && Chain->isProcessingUpdateRecords()) return;
6047 assert(!WritingAST && "Already writing the AST!");
6048 assert(Delete && "Not given an operator delete");
6050 Chain->forEachImportedKeyDecl(DD, [&](const Decl *D) {
6051 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_RESOLVED_DTOR_DELETE, Delete));
6055 void ASTWriter::CompletedImplicitDefinition(const FunctionDecl *D) {
6056 if (Chain && Chain->isProcessingUpdateRecords()) return;
6057 assert(!WritingAST && "Already writing the AST!");
6058 if (!D->isFromASTFile())
6059 return; // Declaration not imported from PCH.
6061 // Implicit function decl from a PCH was defined.
6062 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_FUNCTION_DEFINITION));
6065 void ASTWriter::FunctionDefinitionInstantiated(const FunctionDecl *D) {
6066 if (Chain && Chain->isProcessingUpdateRecords()) return;
6067 assert(!WritingAST && "Already writing the AST!");
6068 if (!D->isFromASTFile())
6071 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_FUNCTION_DEFINITION));
6074 void ASTWriter::StaticDataMemberInstantiated(const VarDecl *D) {
6075 if (Chain && Chain->isProcessingUpdateRecords()) return;
6076 assert(!WritingAST && "Already writing the AST!");
6077 if (!D->isFromASTFile())
6080 // Since the actual instantiation is delayed, this really means that we need
6081 // to update the instantiation location.
6082 DeclUpdates[D].push_back(
6083 DeclUpdate(UPD_CXX_INSTANTIATED_STATIC_DATA_MEMBER,
6084 D->getMemberSpecializationInfo()->getPointOfInstantiation()));
6087 void ASTWriter::DefaultArgumentInstantiated(const ParmVarDecl *D) {
6088 if (Chain && Chain->isProcessingUpdateRecords()) return;
6089 assert(!WritingAST && "Already writing the AST!");
6090 if (!D->isFromASTFile())
6093 DeclUpdates[D].push_back(
6094 DeclUpdate(UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT, D));
6097 void ASTWriter::DefaultMemberInitializerInstantiated(const FieldDecl *D) {
6098 assert(!WritingAST && "Already writing the AST!");
6099 if (!D->isFromASTFile())
6102 DeclUpdates[D].push_back(
6103 DeclUpdate(UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER, D));
6106 void ASTWriter::AddedObjCCategoryToInterface(const ObjCCategoryDecl *CatD,
6107 const ObjCInterfaceDecl *IFD) {
6108 if (Chain && Chain->isProcessingUpdateRecords()) return;
6109 assert(!WritingAST && "Already writing the AST!");
6110 if (!IFD->isFromASTFile())
6111 return; // Declaration not imported from PCH.
6113 assert(IFD->getDefinition() && "Category on a class without a definition?");
6114 ObjCClassesWithCategories.insert(
6115 const_cast<ObjCInterfaceDecl *>(IFD->getDefinition()));
6118 void ASTWriter::DeclarationMarkedUsed(const Decl *D) {
6119 if (Chain && Chain->isProcessingUpdateRecords()) return;
6120 assert(!WritingAST && "Already writing the AST!");
6122 // If there is *any* declaration of the entity that's not from an AST file,
6123 // we can skip writing the update record. We make sure that isUsed() triggers
6124 // completion of the redeclaration chain of the entity.
6125 for (auto Prev = D->getMostRecentDecl(); Prev; Prev = Prev->getPreviousDecl())
6126 if (IsLocalDecl(Prev))
6129 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_MARKED_USED));
6132 void ASTWriter::DeclarationMarkedOpenMPThreadPrivate(const Decl *D) {
6133 if (Chain && Chain->isProcessingUpdateRecords()) return;
6134 assert(!WritingAST && "Already writing the AST!");
6135 if (!D->isFromASTFile())
6138 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_MARKED_OPENMP_THREADPRIVATE));
6141 void ASTWriter::DeclarationMarkedOpenMPDeclareTarget(const Decl *D,
6143 if (Chain && Chain->isProcessingUpdateRecords()) return;
6144 assert(!WritingAST && "Already writing the AST!");
6145 if (!D->isFromASTFile())
6148 DeclUpdates[D].push_back(
6149 DeclUpdate(UPD_DECL_MARKED_OPENMP_DECLARETARGET, Attr));
6152 void ASTWriter::RedefinedHiddenDefinition(const NamedDecl *D, Module *M) {
6153 if (Chain && Chain->isProcessingUpdateRecords()) return;
6154 assert(!WritingAST && "Already writing the AST!");
6155 assert(D->isHidden() && "expected a hidden declaration");
6156 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_EXPORTED, M));
6159 void ASTWriter::AddedAttributeToRecord(const Attr *Attr,
6160 const RecordDecl *Record) {
6161 if (Chain && Chain->isProcessingUpdateRecords()) return;
6162 assert(!WritingAST && "Already writing the AST!");
6163 if (!Record->isFromASTFile())
6165 DeclUpdates[Record].push_back(DeclUpdate(UPD_ADDED_ATTR_TO_RECORD, Attr));
6168 void ASTWriter::AddedCXXTemplateSpecialization(
6169 const ClassTemplateDecl *TD, const ClassTemplateSpecializationDecl *D) {
6170 assert(!WritingAST && "Already writing the AST!");
6172 if (!TD->getFirstDecl()->isFromASTFile())
6174 if (Chain && Chain->isProcessingUpdateRecords())
6177 DeclsToEmitEvenIfUnreferenced.push_back(D);
6180 void ASTWriter::AddedCXXTemplateSpecialization(
6181 const VarTemplateDecl *TD, const VarTemplateSpecializationDecl *D) {
6182 assert(!WritingAST && "Already writing the AST!");
6184 if (!TD->getFirstDecl()->isFromASTFile())
6186 if (Chain && Chain->isProcessingUpdateRecords())
6189 DeclsToEmitEvenIfUnreferenced.push_back(D);
6192 void ASTWriter::AddedCXXTemplateSpecialization(const FunctionTemplateDecl *TD,
6193 const FunctionDecl *D) {
6194 assert(!WritingAST && "Already writing the AST!");
6196 if (!TD->getFirstDecl()->isFromASTFile())
6198 if (Chain && Chain->isProcessingUpdateRecords())
6201 DeclsToEmitEvenIfUnreferenced.push_back(D);