Bug Summary

File:tools/clang/lib/Serialization/ASTWriter.cpp
Warning:line 420, column 9
1st function call argument is an uninitialized value

Annotated Source Code

/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp

1//===- ASTWriter.cpp - AST File Writer ------------------------------------===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file defines the ASTWriter class, which writes AST files.
11//
12//===----------------------------------------------------------------------===//
13
14#include "clang/Serialization/ASTWriter.h"
15#include "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/Attr.h"
21#include "clang/AST/Decl.h"
22#include "clang/AST/DeclBase.h"
23#include "clang/AST/DeclCXX.h"
24#include "clang/AST/DeclContextInternals.h"
25#include "clang/AST/DeclFriend.h"
26#include "clang/AST/DeclObjC.h"
27#include "clang/AST/DeclTemplate.h"
28#include "clang/AST/DeclarationName.h"
29#include "clang/AST/Expr.h"
30#include "clang/AST/ExprCXX.h"
31#include "clang/AST/LambdaCapture.h"
32#include "clang/AST/NestedNameSpecifier.h"
33#include "clang/AST/RawCommentList.h"
34#include "clang/AST/TemplateName.h"
35#include "clang/AST/Type.h"
36#include "clang/AST/TypeLocVisitor.h"
37#include "clang/Basic/Diagnostic.h"
38#include "clang/Basic/DiagnosticOptions.h"
39#include "clang/Basic/FileManager.h"
40#include "clang/Basic/FileSystemOptions.h"
41#include "clang/Basic/IdentifierTable.h"
42#include "clang/Basic/LLVM.h"
43#include "clang/Basic/Lambda.h"
44#include "clang/Basic/LangOptions.h"
45#include "clang/Basic/MemoryBufferCache.h"
46#include "clang/Basic/Module.h"
47#include "clang/Basic/ObjCRuntime.h"
48#include "clang/Basic/OpenCLOptions.h"
49#include "clang/Basic/SourceLocation.h"
50#include "clang/Basic/SourceManager.h"
51#include "clang/Basic/SourceManagerInternals.h"
52#include "clang/Basic/Specifiers.h"
53#include "clang/Basic/TargetInfo.h"
54#include "clang/Basic/TargetOptions.h"
55#include "clang/Basic/Version.h"
56#include "clang/Basic/VersionTuple.h"
57#include "clang/Lex/HeaderSearch.h"
58#include "clang/Lex/HeaderSearchOptions.h"
59#include "clang/Lex/MacroInfo.h"
60#include "clang/Lex/ModuleMap.h"
61#include "clang/Lex/PreprocessingRecord.h"
62#include "clang/Lex/Preprocessor.h"
63#include "clang/Lex/PreprocessorOptions.h"
64#include "clang/Lex/Token.h"
65#include "clang/Sema/IdentifierResolver.h"
66#include "clang/Sema/ObjCMethodList.h"
67#include "clang/Sema/Sema.h"
68#include "clang/Sema/Weak.h"
69#include "clang/Serialization/ASTReader.h"
70#include "clang/Serialization/Module.h"
71#include "clang/Serialization/ModuleFileExtension.h"
72#include "clang/Serialization/SerializationDiagnostic.h"
73#include "llvm/ADT/APFloat.h"
74#include "llvm/ADT/APInt.h"
75#include "llvm/ADT/APSInt.h"
76#include "llvm/ADT/ArrayRef.h"
77#include "llvm/ADT/DenseMap.h"
78#include "llvm/ADT/Hashing.h"
79#include "llvm/ADT/Optional.h"
80#include "llvm/ADT/PointerIntPair.h"
81#include "llvm/ADT/STLExtras.h"
82#include "llvm/ADT/SmallSet.h"
83#include "llvm/ADT/SmallString.h"
84#include "llvm/ADT/SmallVector.h"
85#include "llvm/ADT/StringExtras.h"
86#include "llvm/ADT/StringMap.h"
87#include "llvm/ADT/StringRef.h"
88#include "llvm/Bitcode/BitCodes.h"
89#include "llvm/Bitcode/BitstreamWriter.h"
90#include "llvm/Support/Casting.h"
91#include "llvm/Support/Compression.h"
92#include "llvm/Support/Endian.h"
93#include "llvm/Support/EndianStream.h"
94#include "llvm/Support/Error.h"
95#include "llvm/Support/ErrorHandling.h"
96#include "llvm/Support/MemoryBuffer.h"
97#include "llvm/Support/OnDiskHashTable.h"
98#include "llvm/Support/Path.h"
99#include "llvm/Support/SHA1.h"
100#include "llvm/Support/raw_ostream.h"
101#include <algorithm>
102#include <cassert>
103#include <cstdint>
104#include <cstdlib>
105#include <cstring>
106#include <ctime>
107#include <deque>
108#include <limits>
109#include <memory>
110#include <queue>
111#include <tuple>
112#include <utility>
113#include <vector>
114
115using namespace clang;
116using namespace clang::serialization;
117
118template <typename T, typename Allocator>
119static StringRef bytes(const std::vector<T, Allocator> &v) {
120 if (v.empty()) return StringRef();
121 return StringRef(reinterpret_cast<const char*>(&v[0]),
122 sizeof(T) * v.size());
123}
124
125template <typename T>
126static StringRef bytes(const SmallVectorImpl<T> &v) {
127 return StringRef(reinterpret_cast<const char*>(v.data()),
128 sizeof(T) * v.size());
129}
130
131//===----------------------------------------------------------------------===//
132// Type serialization
133//===----------------------------------------------------------------------===//
134
135namespace clang {
136
137 class ASTTypeWriter {
138 ASTWriter &Writer;
139 ASTRecordWriter Record;
140
141 /// \brief Type code that corresponds to the record generated.
142 TypeCode Code = static_cast<TypeCode>(0);
143
144 /// \brief Abbreviation to use for the record, if any.
145 unsigned AbbrevToUse = 0;
146
147 public:
148 ASTTypeWriter(ASTWriter &Writer, ASTWriter::RecordDataImpl &Record)
149 : Writer(Writer), Record(Writer, Record) {}
150
151 uint64_t Emit() {
152 return Record.Emit(Code, AbbrevToUse);
153 }
154
155 void Visit(QualType T) {
156 if (T.hasLocalNonFastQualifiers()) {
157 Qualifiers Qs = T.getLocalQualifiers();
158 Record.AddTypeRef(T.getLocalUnqualifiedType());
159 Record.push_back(Qs.getAsOpaqueValue());
160 Code = TYPE_EXT_QUAL;
161 AbbrevToUse = Writer.TypeExtQualAbbrev;
162 } else {
163 switch (T->getTypeClass()) {
164 // For all of the concrete, non-dependent types, call the
165 // appropriate visitor function.
166#define TYPE(Class, Base) \
167 case Type::Class: Visit##Class##Type(cast<Class##Type>(T)); break;
168#define ABSTRACT_TYPE(Class, Base)
169#include "clang/AST/TypeNodes.def"
170 }
171 }
172 }
173
174 void VisitArrayType(const ArrayType *T);
175 void VisitFunctionType(const FunctionType *T);
176 void VisitTagType(const TagType *T);
177
178#define TYPE(Class, Base) void Visit##Class##Type(const Class##Type *T);
179#define ABSTRACT_TYPE(Class, Base)
180#include "clang/AST/TypeNodes.def"
181 };
182
183} // namespace clang
184
185void ASTTypeWriter::VisitBuiltinType(const BuiltinType *T) {
186 llvm_unreachable("Built-in types are never serialized")::llvm::llvm_unreachable_internal("Built-in types are never serialized"
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 186)
;
187}
188
189void ASTTypeWriter::VisitComplexType(const ComplexType *T) {
190 Record.AddTypeRef(T->getElementType());
191 Code = TYPE_COMPLEX;
192}
193
194void ASTTypeWriter::VisitPointerType(const PointerType *T) {
195 Record.AddTypeRef(T->getPointeeType());
196 Code = TYPE_POINTER;
197}
198
199void ASTTypeWriter::VisitDecayedType(const DecayedType *T) {
200 Record.AddTypeRef(T->getOriginalType());
201 Code = TYPE_DECAYED;
202}
203
204void ASTTypeWriter::VisitAdjustedType(const AdjustedType *T) {
205 Record.AddTypeRef(T->getOriginalType());
206 Record.AddTypeRef(T->getAdjustedType());
207 Code = TYPE_ADJUSTED;
208}
209
210void ASTTypeWriter::VisitBlockPointerType(const BlockPointerType *T) {
211 Record.AddTypeRef(T->getPointeeType());
212 Code = TYPE_BLOCK_POINTER;
213}
214
215void ASTTypeWriter::VisitLValueReferenceType(const LValueReferenceType *T) {
216 Record.AddTypeRef(T->getPointeeTypeAsWritten());
217 Record.push_back(T->isSpelledAsLValue());
218 Code = TYPE_LVALUE_REFERENCE;
219}
220
221void ASTTypeWriter::VisitRValueReferenceType(const RValueReferenceType *T) {
222 Record.AddTypeRef(T->getPointeeTypeAsWritten());
223 Code = TYPE_RVALUE_REFERENCE;
224}
225
226void ASTTypeWriter::VisitMemberPointerType(const MemberPointerType *T) {
227 Record.AddTypeRef(T->getPointeeType());
228 Record.AddTypeRef(QualType(T->getClass(), 0));
229 Code = TYPE_MEMBER_POINTER;
230}
231
232void ASTTypeWriter::VisitArrayType(const ArrayType *T) {
233 Record.AddTypeRef(T->getElementType());
234 Record.push_back(T->getSizeModifier()); // FIXME: stable values
235 Record.push_back(T->getIndexTypeCVRQualifiers()); // FIXME: stable values
236}
237
238void ASTTypeWriter::VisitConstantArrayType(const ConstantArrayType *T) {
239 VisitArrayType(T);
240 Record.AddAPInt(T->getSize());
241 Code = TYPE_CONSTANT_ARRAY;
242}
243
244void ASTTypeWriter::VisitIncompleteArrayType(const IncompleteArrayType *T) {
245 VisitArrayType(T);
246 Code = TYPE_INCOMPLETE_ARRAY;
247}
248
249void ASTTypeWriter::VisitVariableArrayType(const VariableArrayType *T) {
250 VisitArrayType(T);
251 Record.AddSourceLocation(T->getLBracketLoc());
252 Record.AddSourceLocation(T->getRBracketLoc());
253 Record.AddStmt(T->getSizeExpr());
254 Code = TYPE_VARIABLE_ARRAY;
255}
256
257void ASTTypeWriter::VisitVectorType(const VectorType *T) {
258 Record.AddTypeRef(T->getElementType());
259 Record.push_back(T->getNumElements());
260 Record.push_back(T->getVectorKind());
261 Code = TYPE_VECTOR;
262}
263
264void ASTTypeWriter::VisitExtVectorType(const ExtVectorType *T) {
265 VisitVectorType(T);
266 Code = TYPE_EXT_VECTOR;
267}
268
269void ASTTypeWriter::VisitFunctionType(const FunctionType *T) {
270 Record.AddTypeRef(T->getReturnType());
271 FunctionType::ExtInfo C = T->getExtInfo();
272 Record.push_back(C.getNoReturn());
273 Record.push_back(C.getHasRegParm());
274 Record.push_back(C.getRegParm());
275 // FIXME: need to stabilize encoding of calling convention...
276 Record.push_back(C.getCC());
277 Record.push_back(C.getProducesResult());
278 Record.push_back(C.getNoCallerSavedRegs());
279
280 if (C.getHasRegParm() || C.getRegParm() || C.getProducesResult())
281 AbbrevToUse = 0;
282}
283
284void ASTTypeWriter::VisitFunctionNoProtoType(const FunctionNoProtoType *T) {
285 VisitFunctionType(T);
286 Code = TYPE_FUNCTION_NO_PROTO;
287}
288
289static void addExceptionSpec(const FunctionProtoType *T,
290 ASTRecordWriter &Record) {
291 Record.push_back(T->getExceptionSpecType());
292 if (T->getExceptionSpecType() == EST_Dynamic) {
293 Record.push_back(T->getNumExceptions());
294 for (unsigned I = 0, N = T->getNumExceptions(); I != N; ++I)
295 Record.AddTypeRef(T->getExceptionType(I));
296 } else if (T->getExceptionSpecType() == EST_ComputedNoexcept) {
297 Record.AddStmt(T->getNoexceptExpr());
298 } else if (T->getExceptionSpecType() == EST_Uninstantiated) {
299 Record.AddDeclRef(T->getExceptionSpecDecl());
300 Record.AddDeclRef(T->getExceptionSpecTemplate());
301 } else if (T->getExceptionSpecType() == EST_Unevaluated) {
302 Record.AddDeclRef(T->getExceptionSpecDecl());
303 }
304}
305
306void ASTTypeWriter::VisitFunctionProtoType(const FunctionProtoType *T) {
307 VisitFunctionType(T);
308
309 Record.push_back(T->isVariadic());
310 Record.push_back(T->hasTrailingReturn());
311 Record.push_back(T->getTypeQuals());
312 Record.push_back(static_cast<unsigned>(T->getRefQualifier()));
313 addExceptionSpec(T, Record);
314
315 Record.push_back(T->getNumParams());
316 for (unsigned I = 0, N = T->getNumParams(); I != N; ++I)
317 Record.AddTypeRef(T->getParamType(I));
318
319 if (T->hasExtParameterInfos()) {
320 for (unsigned I = 0, N = T->getNumParams(); I != N; ++I)
321 Record.push_back(T->getExtParameterInfo(I).getOpaqueValue());
322 }
323
324 if (T->isVariadic() || T->hasTrailingReturn() || T->getTypeQuals() ||
325 T->getRefQualifier() || T->getExceptionSpecType() != EST_None ||
326 T->hasExtParameterInfos())
327 AbbrevToUse = 0;
328
329 Code = TYPE_FUNCTION_PROTO;
330}
331
332void ASTTypeWriter::VisitUnresolvedUsingType(const UnresolvedUsingType *T) {
333 Record.AddDeclRef(T->getDecl());
334 Code = TYPE_UNRESOLVED_USING;
335}
336
337void ASTTypeWriter::VisitTypedefType(const TypedefType *T) {
338 Record.AddDeclRef(T->getDecl());
339 assert(!T->isCanonicalUnqualified() && "Invalid typedef ?")(static_cast <bool> (!T->isCanonicalUnqualified() &&
"Invalid typedef ?") ? void (0) : __assert_fail ("!T->isCanonicalUnqualified() && \"Invalid typedef ?\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 339, __extension__ __PRETTY_FUNCTION__))
;
340 Record.AddTypeRef(T->getCanonicalTypeInternal());
341 Code = TYPE_TYPEDEF;
342}
343
344void ASTTypeWriter::VisitTypeOfExprType(const TypeOfExprType *T) {
345 Record.AddStmt(T->getUnderlyingExpr());
346 Code = TYPE_TYPEOF_EXPR;
347}
348
349void ASTTypeWriter::VisitTypeOfType(const TypeOfType *T) {
350 Record.AddTypeRef(T->getUnderlyingType());
351 Code = TYPE_TYPEOF;
352}
353
354void ASTTypeWriter::VisitDecltypeType(const DecltypeType *T) {
355 Record.AddTypeRef(T->getUnderlyingType());
356 Record.AddStmt(T->getUnderlyingExpr());
357 Code = TYPE_DECLTYPE;
358}
359
360void ASTTypeWriter::VisitUnaryTransformType(const UnaryTransformType *T) {
361 Record.AddTypeRef(T->getBaseType());
362 Record.AddTypeRef(T->getUnderlyingType());
363 Record.push_back(T->getUTTKind());
364 Code = TYPE_UNARY_TRANSFORM;
365}
366
367void ASTTypeWriter::VisitAutoType(const AutoType *T) {
368 Record.AddTypeRef(T->getDeducedType());
369 Record.push_back((unsigned)T->getKeyword());
370 if (T->getDeducedType().isNull())
371 Record.push_back(T->isDependentType());
372 Code = TYPE_AUTO;
373}
374
375void ASTTypeWriter::VisitDeducedTemplateSpecializationType(
376 const DeducedTemplateSpecializationType *T) {
377 Record.AddTemplateName(T->getTemplateName());
378 Record.AddTypeRef(T->getDeducedType());
379 if (T->getDeducedType().isNull())
380 Record.push_back(T->isDependentType());
381 Code = TYPE_DEDUCED_TEMPLATE_SPECIALIZATION;
382}
383
384void ASTTypeWriter::VisitTagType(const TagType *T) {
385 Record.push_back(T->isDependentType());
386 Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
387 assert(!T->isBeingDefined() &&(static_cast <bool> (!T->isBeingDefined() &&
"Cannot serialize in the middle of a type definition") ? void
(0) : __assert_fail ("!T->isBeingDefined() && \"Cannot serialize in the middle of a type definition\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 388, __extension__ __PRETTY_FUNCTION__))
388 "Cannot serialize in the middle of a type definition")(static_cast <bool> (!T->isBeingDefined() &&
"Cannot serialize in the middle of a type definition") ? void
(0) : __assert_fail ("!T->isBeingDefined() && \"Cannot serialize in the middle of a type definition\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 388, __extension__ __PRETTY_FUNCTION__))
;
389}
390
391void ASTTypeWriter::VisitRecordType(const RecordType *T) {
392 VisitTagType(T);
393 Code = TYPE_RECORD;
394}
395
396void ASTTypeWriter::VisitEnumType(const EnumType *T) {
397 VisitTagType(T);
398 Code = TYPE_ENUM;
399}
400
401void ASTTypeWriter::VisitAttributedType(const AttributedType *T) {
402 Record.AddTypeRef(T->getModifiedType());
403 Record.AddTypeRef(T->getEquivalentType());
404 Record.push_back(T->getAttrKind());
405 Code = TYPE_ATTRIBUTED;
406}
407
408void
409ASTTypeWriter::VisitSubstTemplateTypeParmType(
410 const SubstTemplateTypeParmType *T) {
411 Record.AddTypeRef(QualType(T->getReplacedParameter(), 0));
412 Record.AddTypeRef(T->getReplacementType());
413 Code = TYPE_SUBST_TEMPLATE_TYPE_PARM;
414}
415
416void
417ASTTypeWriter::VisitSubstTemplateTypeParmPackType(
418 const SubstTemplateTypeParmPackType *T) {
419 Record.AddTypeRef(QualType(T->getReplacedParameter(), 0));
420 Record.AddTemplateArgument(T->getArgumentPack());
421 Code = TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK;
422}
423
424void
425ASTTypeWriter::VisitTemplateSpecializationType(
426 const TemplateSpecializationType *T) {
427 Record.push_back(T->isDependentType());
428 Record.AddTemplateName(T->getTemplateName());
429 Record.push_back(T->getNumArgs());
430 for (const auto &ArgI : *T)
431 Record.AddTemplateArgument(ArgI);
432 Record.AddTypeRef(T->isTypeAlias() ? T->getAliasedType()
433 : T->isCanonicalUnqualified()
434 ? QualType()
435 : T->getCanonicalTypeInternal());
436 Code = TYPE_TEMPLATE_SPECIALIZATION;
437}
438
439void
440ASTTypeWriter::VisitDependentSizedArrayType(const DependentSizedArrayType *T) {
441 VisitArrayType(T);
442 Record.AddStmt(T->getSizeExpr());
443 Record.AddSourceRange(T->getBracketsRange());
444 Code = TYPE_DEPENDENT_SIZED_ARRAY;
445}
446
447void
448ASTTypeWriter::VisitDependentSizedExtVectorType(
449 const DependentSizedExtVectorType *T) {
450 Record.AddTypeRef(T->getElementType());
451 Record.AddStmt(T->getSizeExpr());
452 Record.AddSourceLocation(T->getAttributeLoc());
453 Code = TYPE_DEPENDENT_SIZED_EXT_VECTOR;
454}
455
456void
457ASTTypeWriter::VisitDependentAddressSpaceType(
458 const DependentAddressSpaceType *T) {
459 Record.AddTypeRef(T->getPointeeType());
460 Record.AddStmt(T->getAddrSpaceExpr());
461 Record.AddSourceLocation(T->getAttributeLoc());
462 Code = TYPE_DEPENDENT_ADDRESS_SPACE;
463}
464
465void
466ASTTypeWriter::VisitTemplateTypeParmType(const TemplateTypeParmType *T) {
467 Record.push_back(T->getDepth());
468 Record.push_back(T->getIndex());
469 Record.push_back(T->isParameterPack());
470 Record.AddDeclRef(T->getDecl());
471 Code = TYPE_TEMPLATE_TYPE_PARM;
472}
473
474void
475ASTTypeWriter::VisitDependentNameType(const DependentNameType *T) {
476 Record.push_back(T->getKeyword());
477 Record.AddNestedNameSpecifier(T->getQualifier());
478 Record.AddIdentifierRef(T->getIdentifier());
479 Record.AddTypeRef(
480 T->isCanonicalUnqualified() ? QualType() : T->getCanonicalTypeInternal());
481 Code = TYPE_DEPENDENT_NAME;
482}
483
484void
485ASTTypeWriter::VisitDependentTemplateSpecializationType(
486 const DependentTemplateSpecializationType *T) {
487 Record.push_back(T->getKeyword());
488 Record.AddNestedNameSpecifier(T->getQualifier());
489 Record.AddIdentifierRef(T->getIdentifier());
490 Record.push_back(T->getNumArgs());
491 for (const auto &I : *T)
492 Record.AddTemplateArgument(I);
493 Code = TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION;
494}
495
496void ASTTypeWriter::VisitPackExpansionType(const PackExpansionType *T) {
497 Record.AddTypeRef(T->getPattern());
498 if (Optional<unsigned> NumExpansions = T->getNumExpansions())
499 Record.push_back(*NumExpansions + 1);
500 else
501 Record.push_back(0);
502 Code = TYPE_PACK_EXPANSION;
503}
504
505void ASTTypeWriter::VisitParenType(const ParenType *T) {
506 Record.AddTypeRef(T->getInnerType());
507 Code = TYPE_PAREN;
508}
509
510void ASTTypeWriter::VisitElaboratedType(const ElaboratedType *T) {
511 Record.push_back(T->getKeyword());
512 Record.AddNestedNameSpecifier(T->getQualifier());
513 Record.AddTypeRef(T->getNamedType());
514 Code = TYPE_ELABORATED;
515}
516
517void ASTTypeWriter::VisitInjectedClassNameType(const InjectedClassNameType *T) {
518 Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
519 Record.AddTypeRef(T->getInjectedSpecializationType());
520 Code = TYPE_INJECTED_CLASS_NAME;
521}
522
523void ASTTypeWriter::VisitObjCInterfaceType(const ObjCInterfaceType *T) {
524 Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
525 Code = TYPE_OBJC_INTERFACE;
526}
527
528void ASTTypeWriter::VisitObjCTypeParamType(const ObjCTypeParamType *T) {
529 Record.AddDeclRef(T->getDecl());
530 Record.push_back(T->getNumProtocols());
531 for (const auto *I : T->quals())
532 Record.AddDeclRef(I);
533 Code = TYPE_OBJC_TYPE_PARAM;
534}
535
536void ASTTypeWriter::VisitObjCObjectType(const ObjCObjectType *T) {
537 Record.AddTypeRef(T->getBaseType());
538 Record.push_back(T->getTypeArgsAsWritten().size());
539 for (auto TypeArg : T->getTypeArgsAsWritten())
540 Record.AddTypeRef(TypeArg);
541 Record.push_back(T->getNumProtocols());
542 for (const auto *I : T->quals())
543 Record.AddDeclRef(I);
544 Record.push_back(T->isKindOfTypeAsWritten());
545 Code = TYPE_OBJC_OBJECT;
546}
547
548void
549ASTTypeWriter::VisitObjCObjectPointerType(const ObjCObjectPointerType *T) {
550 Record.AddTypeRef(T->getPointeeType());
551 Code = TYPE_OBJC_OBJECT_POINTER;
552}
553
554void
555ASTTypeWriter::VisitAtomicType(const AtomicType *T) {
556 Record.AddTypeRef(T->getValueType());
557 Code = TYPE_ATOMIC;
558}
559
560void
561ASTTypeWriter::VisitPipeType(const PipeType *T) {
562 Record.AddTypeRef(T->getElementType());
563 Record.push_back(T->isReadOnly());
564 Code = TYPE_PIPE;
565}
566
567namespace {
568
569class TypeLocWriter : public TypeLocVisitor<TypeLocWriter> {
570 ASTRecordWriter &Record;
571
572public:
573 TypeLocWriter(ASTRecordWriter &Record) : Record(Record) {}
574
575#define ABSTRACT_TYPELOC(CLASS, PARENT)
576#define TYPELOC(CLASS, PARENT) \
577 void Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc);
578#include "clang/AST/TypeLocNodes.def"
579
580 void VisitArrayTypeLoc(ArrayTypeLoc TyLoc);
581 void VisitFunctionTypeLoc(FunctionTypeLoc TyLoc);
582};
583
584} // namespace
585
586void TypeLocWriter::VisitQualifiedTypeLoc(QualifiedTypeLoc TL) {
587 // nothing to do
588}
589
590void TypeLocWriter::VisitBuiltinTypeLoc(BuiltinTypeLoc TL) {
591 Record.AddSourceLocation(TL.getBuiltinLoc());
592 if (TL.needsExtraLocalData()) {
593 Record.push_back(TL.getWrittenTypeSpec());
594 Record.push_back(TL.getWrittenSignSpec());
595 Record.push_back(TL.getWrittenWidthSpec());
596 Record.push_back(TL.hasModeAttr());
597 }
598}
599
600void TypeLocWriter::VisitComplexTypeLoc(ComplexTypeLoc TL) {
601 Record.AddSourceLocation(TL.getNameLoc());
602}
603
604void TypeLocWriter::VisitPointerTypeLoc(PointerTypeLoc TL) {
605 Record.AddSourceLocation(TL.getStarLoc());
606}
607
608void TypeLocWriter::VisitDecayedTypeLoc(DecayedTypeLoc TL) {
609 // nothing to do
610}
611
612void TypeLocWriter::VisitAdjustedTypeLoc(AdjustedTypeLoc TL) {
613 // nothing to do
614}
615
616void TypeLocWriter::VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL) {
617 Record.AddSourceLocation(TL.getCaretLoc());
618}
619
620void TypeLocWriter::VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL) {
621 Record.AddSourceLocation(TL.getAmpLoc());
622}
623
624void TypeLocWriter::VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL) {
625 Record.AddSourceLocation(TL.getAmpAmpLoc());
626}
627
628void TypeLocWriter::VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL) {
629 Record.AddSourceLocation(TL.getStarLoc());
630 Record.AddTypeSourceInfo(TL.getClassTInfo());
631}
632
633void TypeLocWriter::VisitArrayTypeLoc(ArrayTypeLoc TL) {
634 Record.AddSourceLocation(TL.getLBracketLoc());
635 Record.AddSourceLocation(TL.getRBracketLoc());
636 Record.push_back(TL.getSizeExpr() ? 1 : 0);
637 if (TL.getSizeExpr())
638 Record.AddStmt(TL.getSizeExpr());
639}
640
641void TypeLocWriter::VisitConstantArrayTypeLoc(ConstantArrayTypeLoc TL) {
642 VisitArrayTypeLoc(TL);
643}
644
645void TypeLocWriter::VisitIncompleteArrayTypeLoc(IncompleteArrayTypeLoc TL) {
646 VisitArrayTypeLoc(TL);
647}
648
649void TypeLocWriter::VisitVariableArrayTypeLoc(VariableArrayTypeLoc TL) {
650 VisitArrayTypeLoc(TL);
651}
652
653void TypeLocWriter::VisitDependentSizedArrayTypeLoc(
654 DependentSizedArrayTypeLoc TL) {
655 VisitArrayTypeLoc(TL);
656}
657
658void TypeLocWriter::VisitDependentAddressSpaceTypeLoc(
659 DependentAddressSpaceTypeLoc TL) {
660 Record.AddSourceLocation(TL.getAttrNameLoc());
661 SourceRange range = TL.getAttrOperandParensRange();
662 Record.AddSourceLocation(range.getBegin());
663 Record.AddSourceLocation(range.getEnd());
664 Record.AddStmt(TL.getAttrExprOperand());
665}
666
667void TypeLocWriter::VisitDependentSizedExtVectorTypeLoc(
668 DependentSizedExtVectorTypeLoc TL) {
669 Record.AddSourceLocation(TL.getNameLoc());
670}
671
672void TypeLocWriter::VisitVectorTypeLoc(VectorTypeLoc TL) {
673 Record.AddSourceLocation(TL.getNameLoc());
674}
675
676void TypeLocWriter::VisitExtVectorTypeLoc(ExtVectorTypeLoc TL) {
677 Record.AddSourceLocation(TL.getNameLoc());
678}
679
680void TypeLocWriter::VisitFunctionTypeLoc(FunctionTypeLoc TL) {
681 Record.AddSourceLocation(TL.getLocalRangeBegin());
682 Record.AddSourceLocation(TL.getLParenLoc());
683 Record.AddSourceLocation(TL.getRParenLoc());
684 Record.AddSourceRange(TL.getExceptionSpecRange());
685 Record.AddSourceLocation(TL.getLocalRangeEnd());
686 for (unsigned i = 0, e = TL.getNumParams(); i != e; ++i)
687 Record.AddDeclRef(TL.getParam(i));
688}
689
690void TypeLocWriter::VisitFunctionProtoTypeLoc(FunctionProtoTypeLoc TL) {
691 VisitFunctionTypeLoc(TL);
692}
693
694void TypeLocWriter::VisitFunctionNoProtoTypeLoc(FunctionNoProtoTypeLoc TL) {
695 VisitFunctionTypeLoc(TL);
696}
697
698void TypeLocWriter::VisitUnresolvedUsingTypeLoc(UnresolvedUsingTypeLoc TL) {
699 Record.AddSourceLocation(TL.getNameLoc());
700}
701
702void TypeLocWriter::VisitTypedefTypeLoc(TypedefTypeLoc TL) {
703 Record.AddSourceLocation(TL.getNameLoc());
704}
705
706void TypeLocWriter::VisitObjCTypeParamTypeLoc(ObjCTypeParamTypeLoc TL) {
707 if (TL.getNumProtocols()) {
708 Record.AddSourceLocation(TL.getProtocolLAngleLoc());
709 Record.AddSourceLocation(TL.getProtocolRAngleLoc());
710 }
711 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
712 Record.AddSourceLocation(TL.getProtocolLoc(i));
713}
714
715void TypeLocWriter::VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL) {
716 Record.AddSourceLocation(TL.getTypeofLoc());
717 Record.AddSourceLocation(TL.getLParenLoc());
718 Record.AddSourceLocation(TL.getRParenLoc());
719}
720
721void TypeLocWriter::VisitTypeOfTypeLoc(TypeOfTypeLoc TL) {
722 Record.AddSourceLocation(TL.getTypeofLoc());
723 Record.AddSourceLocation(TL.getLParenLoc());
724 Record.AddSourceLocation(TL.getRParenLoc());
725 Record.AddTypeSourceInfo(TL.getUnderlyingTInfo());
726}
727
728void TypeLocWriter::VisitDecltypeTypeLoc(DecltypeTypeLoc TL) {
729 Record.AddSourceLocation(TL.getNameLoc());
730}
731
732void TypeLocWriter::VisitUnaryTransformTypeLoc(UnaryTransformTypeLoc TL) {
733 Record.AddSourceLocation(TL.getKWLoc());
734 Record.AddSourceLocation(TL.getLParenLoc());
735 Record.AddSourceLocation(TL.getRParenLoc());
736 Record.AddTypeSourceInfo(TL.getUnderlyingTInfo());
737}
738
739void TypeLocWriter::VisitAutoTypeLoc(AutoTypeLoc TL) {
740 Record.AddSourceLocation(TL.getNameLoc());
741}
742
743void TypeLocWriter::VisitDeducedTemplateSpecializationTypeLoc(
744 DeducedTemplateSpecializationTypeLoc TL) {
745 Record.AddSourceLocation(TL.getTemplateNameLoc());
746}
747
748void TypeLocWriter::VisitRecordTypeLoc(RecordTypeLoc TL) {
749 Record.AddSourceLocation(TL.getNameLoc());
750}
751
752void TypeLocWriter::VisitEnumTypeLoc(EnumTypeLoc TL) {
753 Record.AddSourceLocation(TL.getNameLoc());
754}
755
756void TypeLocWriter::VisitAttributedTypeLoc(AttributedTypeLoc TL) {
757 Record.AddSourceLocation(TL.getAttrNameLoc());
758 if (TL.hasAttrOperand()) {
759 SourceRange range = TL.getAttrOperandParensRange();
760 Record.AddSourceLocation(range.getBegin());
761 Record.AddSourceLocation(range.getEnd());
762 }
763 if (TL.hasAttrExprOperand()) {
764 Expr *operand = TL.getAttrExprOperand();
765 Record.push_back(operand ? 1 : 0);
766 if (operand) Record.AddStmt(operand);
767 } else if (TL.hasAttrEnumOperand()) {
768 Record.AddSourceLocation(TL.getAttrEnumOperandLoc());
769 }
770}
771
772void TypeLocWriter::VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL) {
773 Record.AddSourceLocation(TL.getNameLoc());
774}
775
776void TypeLocWriter::VisitSubstTemplateTypeParmTypeLoc(
777 SubstTemplateTypeParmTypeLoc TL) {
778 Record.AddSourceLocation(TL.getNameLoc());
779}
780
781void TypeLocWriter::VisitSubstTemplateTypeParmPackTypeLoc(
782 SubstTemplateTypeParmPackTypeLoc TL) {
783 Record.AddSourceLocation(TL.getNameLoc());
784}
785
786void TypeLocWriter::VisitTemplateSpecializationTypeLoc(
787 TemplateSpecializationTypeLoc TL) {
788 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
789 Record.AddSourceLocation(TL.getTemplateNameLoc());
790 Record.AddSourceLocation(TL.getLAngleLoc());
791 Record.AddSourceLocation(TL.getRAngleLoc());
792 for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i)
793 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(i).getArgument().getKind(),
794 TL.getArgLoc(i).getLocInfo());
795}
796
797void TypeLocWriter::VisitParenTypeLoc(ParenTypeLoc TL) {
798 Record.AddSourceLocation(TL.getLParenLoc());
799 Record.AddSourceLocation(TL.getRParenLoc());
800}
801
802void TypeLocWriter::VisitElaboratedTypeLoc(ElaboratedTypeLoc TL) {
803 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
804 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
805}
806
807void TypeLocWriter::VisitInjectedClassNameTypeLoc(InjectedClassNameTypeLoc TL) {
808 Record.AddSourceLocation(TL.getNameLoc());
809}
810
811void TypeLocWriter::VisitDependentNameTypeLoc(DependentNameTypeLoc TL) {
812 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
813 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
814 Record.AddSourceLocation(TL.getNameLoc());
815}
816
817void TypeLocWriter::VisitDependentTemplateSpecializationTypeLoc(
818 DependentTemplateSpecializationTypeLoc TL) {
819 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
820 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
821 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
822 Record.AddSourceLocation(TL.getTemplateNameLoc());
823 Record.AddSourceLocation(TL.getLAngleLoc());
824 Record.AddSourceLocation(TL.getRAngleLoc());
825 for (unsigned I = 0, E = TL.getNumArgs(); I != E; ++I)
826 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(I).getArgument().getKind(),
827 TL.getArgLoc(I).getLocInfo());
828}
829
830void TypeLocWriter::VisitPackExpansionTypeLoc(PackExpansionTypeLoc TL) {
831 Record.AddSourceLocation(TL.getEllipsisLoc());
832}
833
834void TypeLocWriter::VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) {
835 Record.AddSourceLocation(TL.getNameLoc());
836}
837
838void TypeLocWriter::VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) {
839 Record.push_back(TL.hasBaseTypeAsWritten());
840 Record.AddSourceLocation(TL.getTypeArgsLAngleLoc());
841 Record.AddSourceLocation(TL.getTypeArgsRAngleLoc());
842 for (unsigned i = 0, e = TL.getNumTypeArgs(); i != e; ++i)
843 Record.AddTypeSourceInfo(TL.getTypeArgTInfo(i));
844 Record.AddSourceLocation(TL.getProtocolLAngleLoc());
845 Record.AddSourceLocation(TL.getProtocolRAngleLoc());
846 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
847 Record.AddSourceLocation(TL.getProtocolLoc(i));
848}
849
850void TypeLocWriter::VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) {
851 Record.AddSourceLocation(TL.getStarLoc());
852}
853
854void TypeLocWriter::VisitAtomicTypeLoc(AtomicTypeLoc TL) {
855 Record.AddSourceLocation(TL.getKWLoc());
856 Record.AddSourceLocation(TL.getLParenLoc());
857 Record.AddSourceLocation(TL.getRParenLoc());
858}
859
860void TypeLocWriter::VisitPipeTypeLoc(PipeTypeLoc TL) {
861 Record.AddSourceLocation(TL.getKWLoc());
862}
863
864void ASTWriter::WriteTypeAbbrevs() {
865 using namespace llvm;
866
867 std::shared_ptr<BitCodeAbbrev> Abv;
868
869 // Abbreviation for TYPE_EXT_QUAL
870 Abv = std::make_shared<BitCodeAbbrev>();
871 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_EXT_QUAL));
872 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
873 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 3)); // Quals
874 TypeExtQualAbbrev = Stream.EmitAbbrev(std::move(Abv));
875
876 // Abbreviation for TYPE_FUNCTION_PROTO
877 Abv = std::make_shared<BitCodeAbbrev>();
878 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_FUNCTION_PROTO));
879 // FunctionType
880 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ReturnType
881 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // NoReturn
882 Abv->Add(BitCodeAbbrevOp(0)); // HasRegParm
883 Abv->Add(BitCodeAbbrevOp(0)); // RegParm
884 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 4)); // CC
885 Abv->Add(BitCodeAbbrevOp(0)); // ProducesResult
886 Abv->Add(BitCodeAbbrevOp(0)); // NoCallerSavedRegs
887 // FunctionProtoType
888 Abv->Add(BitCodeAbbrevOp(0)); // IsVariadic
889 Abv->Add(BitCodeAbbrevOp(0)); // HasTrailingReturn
890 Abv->Add(BitCodeAbbrevOp(0)); // TypeQuals
891 Abv->Add(BitCodeAbbrevOp(0)); // RefQualifier
892 Abv->Add(BitCodeAbbrevOp(EST_None)); // ExceptionSpec
893 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // NumParams
894 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
895 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Params
896 TypeFunctionProtoAbbrev = Stream.EmitAbbrev(std::move(Abv));
897}
898
899//===----------------------------------------------------------------------===//
900// ASTWriter Implementation
901//===----------------------------------------------------------------------===//
902
903static void EmitBlockID(unsigned ID, const char *Name,
904 llvm::BitstreamWriter &Stream,
905 ASTWriter::RecordDataImpl &Record) {
906 Record.clear();
907 Record.push_back(ID);
908 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETBID, Record);
909
910 // Emit the block name if present.
911 if (!Name || Name[0] == 0)
912 return;
913 Record.clear();
914 while (*Name)
915 Record.push_back(*Name++);
916 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_BLOCKNAME, Record);
917}
918
919static void EmitRecordID(unsigned ID, const char *Name,
920 llvm::BitstreamWriter &Stream,
921 ASTWriter::RecordDataImpl &Record) {
922 Record.clear();
923 Record.push_back(ID);
924 while (*Name)
925 Record.push_back(*Name++);
926 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETRECORDNAME, Record);
927}
928
929static void AddStmtsExprs(llvm::BitstreamWriter &Stream,
930 ASTWriter::RecordDataImpl &Record) {
931#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
932 RECORD(STMT_STOP);
933 RECORD(STMT_NULL_PTR);
934 RECORD(STMT_REF_PTR);
935 RECORD(STMT_NULL);
936 RECORD(STMT_COMPOUND);
937 RECORD(STMT_CASE);
938 RECORD(STMT_DEFAULT);
939 RECORD(STMT_LABEL);
940 RECORD(STMT_ATTRIBUTED);
941 RECORD(STMT_IF);
942 RECORD(STMT_SWITCH);
943 RECORD(STMT_WHILE);
944 RECORD(STMT_DO);
945 RECORD(STMT_FOR);
946 RECORD(STMT_GOTO);
947 RECORD(STMT_INDIRECT_GOTO);
948 RECORD(STMT_CONTINUE);
949 RECORD(STMT_BREAK);
950 RECORD(STMT_RETURN);
951 RECORD(STMT_DECL);
952 RECORD(STMT_GCCASM);
953 RECORD(STMT_MSASM);
954 RECORD(EXPR_PREDEFINED);
955 RECORD(EXPR_DECL_REF);
956 RECORD(EXPR_INTEGER_LITERAL);
957 RECORD(EXPR_FLOATING_LITERAL);
958 RECORD(EXPR_IMAGINARY_LITERAL);
959 RECORD(EXPR_STRING_LITERAL);
960 RECORD(EXPR_CHARACTER_LITERAL);
961 RECORD(EXPR_PAREN);
962 RECORD(EXPR_PAREN_LIST);
963 RECORD(EXPR_UNARY_OPERATOR);
964 RECORD(EXPR_SIZEOF_ALIGN_OF);
965 RECORD(EXPR_ARRAY_SUBSCRIPT);
966 RECORD(EXPR_CALL);
967 RECORD(EXPR_MEMBER);
968 RECORD(EXPR_BINARY_OPERATOR);
969 RECORD(EXPR_COMPOUND_ASSIGN_OPERATOR);
970 RECORD(EXPR_CONDITIONAL_OPERATOR);
971 RECORD(EXPR_IMPLICIT_CAST);
972 RECORD(EXPR_CSTYLE_CAST);
973 RECORD(EXPR_COMPOUND_LITERAL);
974 RECORD(EXPR_EXT_VECTOR_ELEMENT);
975 RECORD(EXPR_INIT_LIST);
976 RECORD(EXPR_DESIGNATED_INIT);
977 RECORD(EXPR_DESIGNATED_INIT_UPDATE);
978 RECORD(EXPR_IMPLICIT_VALUE_INIT);
979 RECORD(EXPR_NO_INIT);
980 RECORD(EXPR_VA_ARG);
981 RECORD(EXPR_ADDR_LABEL);
982 RECORD(EXPR_STMT);
983 RECORD(EXPR_CHOOSE);
984 RECORD(EXPR_GNU_NULL);
985 RECORD(EXPR_SHUFFLE_VECTOR);
986 RECORD(EXPR_BLOCK);
987 RECORD(EXPR_GENERIC_SELECTION);
988 RECORD(EXPR_OBJC_STRING_LITERAL);
989 RECORD(EXPR_OBJC_BOXED_EXPRESSION);
990 RECORD(EXPR_OBJC_ARRAY_LITERAL);
991 RECORD(EXPR_OBJC_DICTIONARY_LITERAL);
992 RECORD(EXPR_OBJC_ENCODE);
993 RECORD(EXPR_OBJC_SELECTOR_EXPR);
994 RECORD(EXPR_OBJC_PROTOCOL_EXPR);
995 RECORD(EXPR_OBJC_IVAR_REF_EXPR);
996 RECORD(EXPR_OBJC_PROPERTY_REF_EXPR);
997 RECORD(EXPR_OBJC_KVC_REF_EXPR);
998 RECORD(EXPR_OBJC_MESSAGE_EXPR);
999 RECORD(STMT_OBJC_FOR_COLLECTION);
1000 RECORD(STMT_OBJC_CATCH);
1001 RECORD(STMT_OBJC_FINALLY);
1002 RECORD(STMT_OBJC_AT_TRY);
1003 RECORD(STMT_OBJC_AT_SYNCHRONIZED);
1004 RECORD(STMT_OBJC_AT_THROW);
1005 RECORD(EXPR_OBJC_BOOL_LITERAL);
1006 RECORD(STMT_CXX_CATCH);
1007 RECORD(STMT_CXX_TRY);
1008 RECORD(STMT_CXX_FOR_RANGE);
1009 RECORD(EXPR_CXX_OPERATOR_CALL);
1010 RECORD(EXPR_CXX_MEMBER_CALL);
1011 RECORD(EXPR_CXX_CONSTRUCT);
1012 RECORD(EXPR_CXX_TEMPORARY_OBJECT);
1013 RECORD(EXPR_CXX_STATIC_CAST);
1014 RECORD(EXPR_CXX_DYNAMIC_CAST);
1015 RECORD(EXPR_CXX_REINTERPRET_CAST);
1016 RECORD(EXPR_CXX_CONST_CAST);
1017 RECORD(EXPR_CXX_FUNCTIONAL_CAST);
1018 RECORD(EXPR_USER_DEFINED_LITERAL);
1019 RECORD(EXPR_CXX_STD_INITIALIZER_LIST);
1020 RECORD(EXPR_CXX_BOOL_LITERAL);
1021 RECORD(EXPR_CXX_NULL_PTR_LITERAL);
1022 RECORD(EXPR_CXX_TYPEID_EXPR);
1023 RECORD(EXPR_CXX_TYPEID_TYPE);
1024 RECORD(EXPR_CXX_THIS);
1025 RECORD(EXPR_CXX_THROW);
1026 RECORD(EXPR_CXX_DEFAULT_ARG);
1027 RECORD(EXPR_CXX_DEFAULT_INIT);
1028 RECORD(EXPR_CXX_BIND_TEMPORARY);
1029 RECORD(EXPR_CXX_SCALAR_VALUE_INIT);
1030 RECORD(EXPR_CXX_NEW);
1031 RECORD(EXPR_CXX_DELETE);
1032 RECORD(EXPR_CXX_PSEUDO_DESTRUCTOR);
1033 RECORD(EXPR_EXPR_WITH_CLEANUPS);
1034 RECORD(EXPR_CXX_DEPENDENT_SCOPE_MEMBER);
1035 RECORD(EXPR_CXX_DEPENDENT_SCOPE_DECL_REF);
1036 RECORD(EXPR_CXX_UNRESOLVED_CONSTRUCT);
1037 RECORD(EXPR_CXX_UNRESOLVED_MEMBER);
1038 RECORD(EXPR_CXX_UNRESOLVED_LOOKUP);
1039 RECORD(EXPR_CXX_EXPRESSION_TRAIT);
1040 RECORD(EXPR_CXX_NOEXCEPT);
1041 RECORD(EXPR_OPAQUE_VALUE);
1042 RECORD(EXPR_BINARY_CONDITIONAL_OPERATOR);
1043 RECORD(EXPR_TYPE_TRAIT);
1044 RECORD(EXPR_ARRAY_TYPE_TRAIT);
1045 RECORD(EXPR_PACK_EXPANSION);
1046 RECORD(EXPR_SIZEOF_PACK);
1047 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM);
1048 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK);
1049 RECORD(EXPR_FUNCTION_PARM_PACK);
1050 RECORD(EXPR_MATERIALIZE_TEMPORARY);
1051 RECORD(EXPR_CUDA_KERNEL_CALL);
1052 RECORD(EXPR_CXX_UUIDOF_EXPR);
1053 RECORD(EXPR_CXX_UUIDOF_TYPE);
1054 RECORD(EXPR_LAMBDA);
1055#undef RECORD
1056}
1057
1058void ASTWriter::WriteBlockInfoBlock() {
1059 RecordData Record;
1060 Stream.EnterBlockInfoBlock();
1061
1062#define BLOCK(X) EmitBlockID(X ## _ID, #X, Stream, Record)
1063#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
1064
1065 // Control Block.
1066 BLOCK(CONTROL_BLOCK);
1067 RECORD(METADATA);
1068 RECORD(MODULE_NAME);
1069 RECORD(MODULE_DIRECTORY);
1070 RECORD(MODULE_MAP_FILE);
1071 RECORD(IMPORTS);
1072 RECORD(ORIGINAL_FILE);
1073 RECORD(ORIGINAL_PCH_DIR);
1074 RECORD(ORIGINAL_FILE_ID);
1075 RECORD(INPUT_FILE_OFFSETS);
1076
1077 BLOCK(OPTIONS_BLOCK);
1078 RECORD(LANGUAGE_OPTIONS);
1079 RECORD(TARGET_OPTIONS);
1080 RECORD(FILE_SYSTEM_OPTIONS);
1081 RECORD(HEADER_SEARCH_OPTIONS);
1082 RECORD(PREPROCESSOR_OPTIONS);
1083
1084 BLOCK(INPUT_FILES_BLOCK);
1085 RECORD(INPUT_FILE);
1086
1087 // AST Top-Level Block.
1088 BLOCK(AST_BLOCK);
1089 RECORD(TYPE_OFFSET);
1090 RECORD(DECL_OFFSET);
1091 RECORD(IDENTIFIER_OFFSET);
1092 RECORD(IDENTIFIER_TABLE);
1093 RECORD(EAGERLY_DESERIALIZED_DECLS);
1094 RECORD(MODULAR_CODEGEN_DECLS);
1095 RECORD(SPECIAL_TYPES);
1096 RECORD(STATISTICS);
1097 RECORD(TENTATIVE_DEFINITIONS);
1098 RECORD(SELECTOR_OFFSETS);
1099 RECORD(METHOD_POOL);
1100 RECORD(PP_COUNTER_VALUE);
1101 RECORD(SOURCE_LOCATION_OFFSETS);
1102 RECORD(SOURCE_LOCATION_PRELOADS);
1103 RECORD(EXT_VECTOR_DECLS);
1104 RECORD(UNUSED_FILESCOPED_DECLS);
1105 RECORD(PPD_ENTITIES_OFFSETS);
1106 RECORD(VTABLE_USES);
1107 RECORD(REFERENCED_SELECTOR_POOL);
1108 RECORD(TU_UPDATE_LEXICAL);
1109 RECORD(SEMA_DECL_REFS);
1110 RECORD(WEAK_UNDECLARED_IDENTIFIERS);
1111 RECORD(PENDING_IMPLICIT_INSTANTIATIONS);
1112 RECORD(UPDATE_VISIBLE);
1113 RECORD(DECL_UPDATE_OFFSETS);
1114 RECORD(DECL_UPDATES);
1115 RECORD(CUDA_SPECIAL_DECL_REFS);
1116 RECORD(HEADER_SEARCH_TABLE);
1117 RECORD(FP_PRAGMA_OPTIONS);
1118 RECORD(OPENCL_EXTENSIONS);
1119 RECORD(OPENCL_EXTENSION_TYPES);
1120 RECORD(OPENCL_EXTENSION_DECLS);
1121 RECORD(DELEGATING_CTORS);
1122 RECORD(KNOWN_NAMESPACES);
1123 RECORD(MODULE_OFFSET_MAP);
1124 RECORD(SOURCE_MANAGER_LINE_TABLE);
1125 RECORD(OBJC_CATEGORIES_MAP);
1126 RECORD(FILE_SORTED_DECLS);
1127 RECORD(IMPORTED_MODULES);
1128 RECORD(OBJC_CATEGORIES);
1129 RECORD(MACRO_OFFSET);
1130 RECORD(INTERESTING_IDENTIFIERS);
1131 RECORD(UNDEFINED_BUT_USED);
1132 RECORD(LATE_PARSED_TEMPLATE);
1133 RECORD(OPTIMIZE_PRAGMA_OPTIONS);
1134 RECORD(MSSTRUCT_PRAGMA_OPTIONS);
1135 RECORD(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS);
1136 RECORD(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES);
1137 RECORD(DELETE_EXPRS_TO_ANALYZE);
1138 RECORD(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH);
1139 RECORD(PP_CONDITIONAL_STACK);
1140
1141 // SourceManager Block.
1142 BLOCK(SOURCE_MANAGER_BLOCK);
1143 RECORD(SM_SLOC_FILE_ENTRY);
1144 RECORD(SM_SLOC_BUFFER_ENTRY);
1145 RECORD(SM_SLOC_BUFFER_BLOB);
1146 RECORD(SM_SLOC_BUFFER_BLOB_COMPRESSED);
1147 RECORD(SM_SLOC_EXPANSION_ENTRY);
1148
1149 // Preprocessor Block.
1150 BLOCK(PREPROCESSOR_BLOCK);
1151 RECORD(PP_MACRO_DIRECTIVE_HISTORY);
1152 RECORD(PP_MACRO_FUNCTION_LIKE);
1153 RECORD(PP_MACRO_OBJECT_LIKE);
1154 RECORD(PP_MODULE_MACRO);
1155 RECORD(PP_TOKEN);
1156
1157 // Submodule Block.
1158 BLOCK(SUBMODULE_BLOCK);
1159 RECORD(SUBMODULE_METADATA);
1160 RECORD(SUBMODULE_DEFINITION);
1161 RECORD(SUBMODULE_UMBRELLA_HEADER);
1162 RECORD(SUBMODULE_HEADER);
1163 RECORD(SUBMODULE_TOPHEADER);
1164 RECORD(SUBMODULE_UMBRELLA_DIR);
1165 RECORD(SUBMODULE_IMPORTS);
1166 RECORD(SUBMODULE_EXPORTS);
1167 RECORD(SUBMODULE_REQUIRES);
1168 RECORD(SUBMODULE_EXCLUDED_HEADER);
1169 RECORD(SUBMODULE_LINK_LIBRARY);
1170 RECORD(SUBMODULE_CONFIG_MACRO);
1171 RECORD(SUBMODULE_CONFLICT);
1172 RECORD(SUBMODULE_PRIVATE_HEADER);
1173 RECORD(SUBMODULE_TEXTUAL_HEADER);
1174 RECORD(SUBMODULE_PRIVATE_TEXTUAL_HEADER);
1175 RECORD(SUBMODULE_INITIALIZERS);
1176 RECORD(SUBMODULE_EXPORT_AS);
1177
1178 // Comments Block.
1179 BLOCK(COMMENTS_BLOCK);
1180 RECORD(COMMENTS_RAW_COMMENT);
1181
1182 // Decls and Types block.
1183 BLOCK(DECLTYPES_BLOCK);
1184 RECORD(TYPE_EXT_QUAL);
1185 RECORD(TYPE_COMPLEX);
1186 RECORD(TYPE_POINTER);
1187 RECORD(TYPE_BLOCK_POINTER);
1188 RECORD(TYPE_LVALUE_REFERENCE);
1189 RECORD(TYPE_RVALUE_REFERENCE);
1190 RECORD(TYPE_MEMBER_POINTER);
1191 RECORD(TYPE_CONSTANT_ARRAY);
1192 RECORD(TYPE_INCOMPLETE_ARRAY);
1193 RECORD(TYPE_VARIABLE_ARRAY);
1194 RECORD(TYPE_VECTOR);
1195 RECORD(TYPE_EXT_VECTOR);
1196 RECORD(TYPE_FUNCTION_NO_PROTO);
1197 RECORD(TYPE_FUNCTION_PROTO);
1198 RECORD(TYPE_TYPEDEF);
1199 RECORD(TYPE_TYPEOF_EXPR);
1200 RECORD(TYPE_TYPEOF);
1201 RECORD(TYPE_RECORD);
1202 RECORD(TYPE_ENUM);
1203 RECORD(TYPE_OBJC_INTERFACE);
1204 RECORD(TYPE_OBJC_OBJECT_POINTER);
1205 RECORD(TYPE_DECLTYPE);
1206 RECORD(TYPE_ELABORATED);
1207 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM);
1208 RECORD(TYPE_UNRESOLVED_USING);
1209 RECORD(TYPE_INJECTED_CLASS_NAME);
1210 RECORD(TYPE_OBJC_OBJECT);
1211 RECORD(TYPE_TEMPLATE_TYPE_PARM);
1212 RECORD(TYPE_TEMPLATE_SPECIALIZATION);
1213 RECORD(TYPE_DEPENDENT_NAME);
1214 RECORD(TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION);
1215 RECORD(TYPE_DEPENDENT_SIZED_ARRAY);
1216 RECORD(TYPE_PAREN);
1217 RECORD(TYPE_PACK_EXPANSION);
1218 RECORD(TYPE_ATTRIBUTED);
1219 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK);
1220 RECORD(TYPE_AUTO);
1221 RECORD(TYPE_UNARY_TRANSFORM);
1222 RECORD(TYPE_ATOMIC);
1223 RECORD(TYPE_DECAYED);
1224 RECORD(TYPE_ADJUSTED);
1225 RECORD(TYPE_OBJC_TYPE_PARAM);
1226 RECORD(LOCAL_REDECLARATIONS);
1227 RECORD(DECL_TYPEDEF);
1228 RECORD(DECL_TYPEALIAS);
1229 RECORD(DECL_ENUM);
1230 RECORD(DECL_RECORD);
1231 RECORD(DECL_ENUM_CONSTANT);
1232 RECORD(DECL_FUNCTION);
1233 RECORD(DECL_OBJC_METHOD);
1234 RECORD(DECL_OBJC_INTERFACE);
1235 RECORD(DECL_OBJC_PROTOCOL);
1236 RECORD(DECL_OBJC_IVAR);
1237 RECORD(DECL_OBJC_AT_DEFS_FIELD);
1238 RECORD(DECL_OBJC_CATEGORY);
1239 RECORD(DECL_OBJC_CATEGORY_IMPL);
1240 RECORD(DECL_OBJC_IMPLEMENTATION);
1241 RECORD(DECL_OBJC_COMPATIBLE_ALIAS);
1242 RECORD(DECL_OBJC_PROPERTY);
1243 RECORD(DECL_OBJC_PROPERTY_IMPL);
1244 RECORD(DECL_FIELD);
1245 RECORD(DECL_MS_PROPERTY);
1246 RECORD(DECL_VAR);
1247 RECORD(DECL_IMPLICIT_PARAM);
1248 RECORD(DECL_PARM_VAR);
1249 RECORD(DECL_FILE_SCOPE_ASM);
1250 RECORD(DECL_BLOCK);
1251 RECORD(DECL_CONTEXT_LEXICAL);
1252 RECORD(DECL_CONTEXT_VISIBLE);
1253 RECORD(DECL_NAMESPACE);
1254 RECORD(DECL_NAMESPACE_ALIAS);
1255 RECORD(DECL_USING);
1256 RECORD(DECL_USING_SHADOW);
1257 RECORD(DECL_USING_DIRECTIVE);
1258 RECORD(DECL_UNRESOLVED_USING_VALUE);
1259 RECORD(DECL_UNRESOLVED_USING_TYPENAME);
1260 RECORD(DECL_LINKAGE_SPEC);
1261 RECORD(DECL_CXX_RECORD);
1262 RECORD(DECL_CXX_METHOD);
1263 RECORD(DECL_CXX_CONSTRUCTOR);
1264 RECORD(DECL_CXX_INHERITED_CONSTRUCTOR);
1265 RECORD(DECL_CXX_DESTRUCTOR);
1266 RECORD(DECL_CXX_CONVERSION);
1267 RECORD(DECL_ACCESS_SPEC);
1268 RECORD(DECL_FRIEND);
1269 RECORD(DECL_FRIEND_TEMPLATE);
1270 RECORD(DECL_CLASS_TEMPLATE);
1271 RECORD(DECL_CLASS_TEMPLATE_SPECIALIZATION);
1272 RECORD(DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION);
1273 RECORD(DECL_VAR_TEMPLATE);
1274 RECORD(DECL_VAR_TEMPLATE_SPECIALIZATION);
1275 RECORD(DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION);
1276 RECORD(DECL_FUNCTION_TEMPLATE);
1277 RECORD(DECL_TEMPLATE_TYPE_PARM);
1278 RECORD(DECL_NON_TYPE_TEMPLATE_PARM);
1279 RECORD(DECL_TEMPLATE_TEMPLATE_PARM);
1280 RECORD(DECL_TYPE_ALIAS_TEMPLATE);
1281 RECORD(DECL_STATIC_ASSERT);
1282 RECORD(DECL_CXX_BASE_SPECIFIERS);
1283 RECORD(DECL_CXX_CTOR_INITIALIZERS);
1284 RECORD(DECL_INDIRECTFIELD);
1285 RECORD(DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK);
1286 RECORD(DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK);
1287 RECORD(DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION);
1288 RECORD(DECL_IMPORT);
1289 RECORD(DECL_OMP_THREADPRIVATE);
1290 RECORD(DECL_EMPTY);
1291 RECORD(DECL_OBJC_TYPE_PARAM);
1292 RECORD(DECL_OMP_CAPTUREDEXPR);
1293 RECORD(DECL_PRAGMA_COMMENT);
1294 RECORD(DECL_PRAGMA_DETECT_MISMATCH);
1295 RECORD(DECL_OMP_DECLARE_REDUCTION);
1296
1297 // Statements and Exprs can occur in the Decls and Types block.
1298 AddStmtsExprs(Stream, Record);
1299
1300 BLOCK(PREPROCESSOR_DETAIL_BLOCK);
1301 RECORD(PPD_MACRO_EXPANSION);
1302 RECORD(PPD_MACRO_DEFINITION);
1303 RECORD(PPD_INCLUSION_DIRECTIVE);
1304
1305 // Decls and Types block.
1306 BLOCK(EXTENSION_BLOCK);
1307 RECORD(EXTENSION_METADATA);
1308
1309 BLOCK(UNHASHED_CONTROL_BLOCK);
1310 RECORD(SIGNATURE);
1311 RECORD(DIAGNOSTIC_OPTIONS);
1312 RECORD(DIAG_PRAGMA_MAPPINGS);
1313
1314#undef RECORD
1315#undef BLOCK
1316 Stream.ExitBlock();
1317}
1318
1319/// \brief Prepares a path for being written to an AST file by converting it
1320/// to an absolute path and removing nested './'s.
1321///
1322/// \return \c true if the path was changed.
1323static bool cleanPathForOutput(FileManager &FileMgr,
1324 SmallVectorImpl<char> &Path) {
1325 bool Changed = FileMgr.makeAbsolutePath(Path);
1326 return Changed | llvm::sys::path::remove_dots(Path);
1327}
1328
1329/// \brief Adjusts the given filename to only write out the portion of the
1330/// filename that is not part of the system root directory.
1331///
1332/// \param Filename the file name to adjust.
1333///
1334/// \param BaseDir When non-NULL, the PCH file is a relocatable AST file and
1335/// the returned filename will be adjusted by this root directory.
1336///
1337/// \returns either the original filename (if it needs no adjustment) or the
1338/// adjusted filename (which points into the @p Filename parameter).
1339static const char *
1340adjustFilenameForRelocatableAST(const char *Filename, StringRef BaseDir) {
1341 assert(Filename && "No file name to adjust?")(static_cast <bool> (Filename && "No file name to adjust?"
) ? void (0) : __assert_fail ("Filename && \"No file name to adjust?\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1341, __extension__ __PRETTY_FUNCTION__))
;
1342
1343 if (BaseDir.empty())
1344 return Filename;
1345
1346 // Verify that the filename and the system root have the same prefix.
1347 unsigned Pos = 0;
1348 for (; Filename[Pos] && Pos < BaseDir.size(); ++Pos)
1349 if (Filename[Pos] != BaseDir[Pos])
1350 return Filename; // Prefixes don't match.
1351
1352 // We hit the end of the filename before we hit the end of the system root.
1353 if (!Filename[Pos])
1354 return Filename;
1355
1356 // If there's not a path separator at the end of the base directory nor
1357 // immediately after it, then this isn't within the base directory.
1358 if (!llvm::sys::path::is_separator(Filename[Pos])) {
1359 if (!llvm::sys::path::is_separator(BaseDir.back()))
1360 return Filename;
1361 } else {
1362 // If the file name has a '/' at the current position, skip over the '/'.
1363 // We distinguish relative paths from absolute paths by the
1364 // absence of '/' at the beginning of relative paths.
1365 //
1366 // FIXME: This is wrong. We distinguish them by asking if the path is
1367 // absolute, which isn't the same thing. And there might be multiple '/'s
1368 // in a row. Use a better mechanism to indicate whether we have emitted an
1369 // absolute or relative path.
1370 ++Pos;
1371 }
1372
1373 return Filename + Pos;
1374}
1375
1376ASTFileSignature ASTWriter::createSignature(StringRef Bytes) {
1377 // Calculate the hash till start of UNHASHED_CONTROL_BLOCK.
1378 llvm::SHA1 Hasher;
1379 Hasher.update(ArrayRef<uint8_t>(Bytes.bytes_begin(), Bytes.size()));
1380 auto Hash = Hasher.result();
1381
1382 // Convert to an array [5*i32].
1383 ASTFileSignature Signature;
1384 auto LShift = [&](unsigned char Val, unsigned Shift) {
1385 return (uint32_t)Val << Shift;
1386 };
1387 for (int I = 0; I != 5; ++I)
1388 Signature[I] = LShift(Hash[I * 4 + 0], 24) | LShift(Hash[I * 4 + 1], 16) |
1389 LShift(Hash[I * 4 + 2], 8) | LShift(Hash[I * 4 + 3], 0);
1390
1391 return Signature;
1392}
1393
1394ASTFileSignature ASTWriter::writeUnhashedControlBlock(Preprocessor &PP,
1395 ASTContext &Context) {
1396 // Flush first to prepare the PCM hash (signature).
1397 Stream.FlushToWord();
1398 auto StartOfUnhashedControl = Stream.GetCurrentBitNo() >> 3;
1399
1400 // Enter the block and prepare to write records.
1401 RecordData Record;
1402 Stream.EnterSubblock(UNHASHED_CONTROL_BLOCK_ID, 5);
1403
1404 // For implicit modules, write the hash of the PCM as its signature.
1405 ASTFileSignature Signature;
1406 if (WritingModule &&
1407 PP.getHeaderSearchInfo().getHeaderSearchOpts().ModulesHashContent) {
1408 Signature = createSignature(StringRef(Buffer.begin(), StartOfUnhashedControl));
1409 Record.append(Signature.begin(), Signature.end());
1410 Stream.EmitRecord(SIGNATURE, Record);
1411 Record.clear();
1412 }
1413
1414 // Diagnostic options.
1415 const auto &Diags = Context.getDiagnostics();
1416 const DiagnosticOptions &DiagOpts = Diags.getDiagnosticOptions();
1417#define DIAGOPT(Name, Bits, Default) Record.push_back(DiagOpts.Name);
1418#define ENUM_DIAGOPT(Name, Type, Bits, Default) \
1419 Record.push_back(static_cast<unsigned>(DiagOpts.get##Name()));
1420#include "clang/Basic/DiagnosticOptions.def"
1421 Record.push_back(DiagOpts.Warnings.size());
1422 for (unsigned I = 0, N = DiagOpts.Warnings.size(); I != N; ++I)
1423 AddString(DiagOpts.Warnings[I], Record);
1424 Record.push_back(DiagOpts.Remarks.size());
1425 for (unsigned I = 0, N = DiagOpts.Remarks.size(); I != N; ++I)
1426 AddString(DiagOpts.Remarks[I], Record);
1427 // Note: we don't serialize the log or serialization file names, because they
1428 // are generally transient files and will almost always be overridden.
1429 Stream.EmitRecord(DIAGNOSTIC_OPTIONS, Record);
1430
1431 // Write out the diagnostic/pragma mappings.
1432 WritePragmaDiagnosticMappings(Diags, /* IsModule = */ WritingModule);
1433
1434 // Leave the options block.
1435 Stream.ExitBlock();
1436 return Signature;
1437}
1438
1439/// \brief Write the control block.
1440void ASTWriter::WriteControlBlock(Preprocessor &PP, ASTContext &Context,
1441 StringRef isysroot,
1442 const std::string &OutputFile) {
1443 using namespace llvm;
1444
1445 Stream.EnterSubblock(CONTROL_BLOCK_ID, 5);
1446 RecordData Record;
1447
1448 // Metadata
1449 auto MetadataAbbrev = std::make_shared<BitCodeAbbrev>();
1450 MetadataAbbrev->Add(BitCodeAbbrevOp(METADATA));
1451 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Major
1452 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Minor
1453 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang maj.
1454 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang min.
1455 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Relocatable
1456 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Timestamps
1457 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Errors
1458 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // SVN branch/tag
1459 unsigned MetadataAbbrevCode = Stream.EmitAbbrev(std::move(MetadataAbbrev));
1460 assert((!WritingModule || isysroot.empty()) &&(static_cast <bool> ((!WritingModule || isysroot.empty(
)) && "writing module as a relocatable PCH?") ? void (
0) : __assert_fail ("(!WritingModule || isysroot.empty()) && \"writing module as a relocatable PCH?\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1461, __extension__ __PRETTY_FUNCTION__))
1461 "writing module as a relocatable PCH?")(static_cast <bool> ((!WritingModule || isysroot.empty(
)) && "writing module as a relocatable PCH?") ? void (
0) : __assert_fail ("(!WritingModule || isysroot.empty()) && \"writing module as a relocatable PCH?\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1461, __extension__ __PRETTY_FUNCTION__))
;
1462 {
1463 RecordData::value_type Record[] = {METADATA, VERSION_MAJOR, VERSION_MINOR,
1464 CLANG_VERSION_MAJOR6, CLANG_VERSION_MINOR0,
1465 !isysroot.empty(), IncludeTimestamps,
1466 ASTHasCompilerErrors};
1467 Stream.EmitRecordWithBlob(MetadataAbbrevCode, Record,
1468 getClangFullRepositoryVersion());
1469 }
1470
1471 if (WritingModule) {
1472 // Module name
1473 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1474 Abbrev->Add(BitCodeAbbrevOp(MODULE_NAME));
1475 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
1476 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1477 RecordData::value_type Record[] = {MODULE_NAME};
1478 Stream.EmitRecordWithBlob(AbbrevCode, Record, WritingModule->Name);
1479 }
1480
1481 if (WritingModule && WritingModule->Directory) {
1482 SmallString<128> BaseDir(WritingModule->Directory->getName());
1483 cleanPathForOutput(Context.getSourceManager().getFileManager(), BaseDir);
1484
1485 // If the home of the module is the current working directory, then we
1486 // want to pick up the cwd of the build process loading the module, not
1487 // our cwd, when we load this module.
1488 if (!PP.getHeaderSearchInfo()
1489 .getHeaderSearchOpts()
1490 .ModuleMapFileHomeIsCwd ||
1491 WritingModule->Directory->getName() != StringRef(".")) {
1492 // Module directory.
1493 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1494 Abbrev->Add(BitCodeAbbrevOp(MODULE_DIRECTORY));
1495 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Directory
1496 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1497
1498 RecordData::value_type Record[] = {MODULE_DIRECTORY};
1499 Stream.EmitRecordWithBlob(AbbrevCode, Record, BaseDir);
1500 }
1501
1502 // Write out all other paths relative to the base directory if possible.
1503 BaseDirectory.assign(BaseDir.begin(), BaseDir.end());
1504 } else if (!isysroot.empty()) {
1505 // Write out paths relative to the sysroot if possible.
1506 BaseDirectory = isysroot;
1507 }
1508
1509 // Module map file
1510 if (WritingModule && WritingModule->Kind == Module::ModuleMapModule) {
1511 Record.clear();
1512
1513 auto &Map = PP.getHeaderSearchInfo().getModuleMap();
1514 AddPath(WritingModule->PresumedModuleMapFile.empty()
1515 ? Map.getModuleMapFileForUniquing(WritingModule)->getName()
1516 : StringRef(WritingModule->PresumedModuleMapFile),
1517 Record);
1518
1519 // Additional module map files.
1520 if (auto *AdditionalModMaps =
1521 Map.getAdditionalModuleMapFiles(WritingModule)) {
1522 Record.push_back(AdditionalModMaps->size());
1523 for (const FileEntry *F : *AdditionalModMaps)
1524 AddPath(F->getName(), Record);
1525 } else {
1526 Record.push_back(0);
1527 }
1528
1529 Stream.EmitRecord(MODULE_MAP_FILE, Record);
1530 }
1531
1532 // Imports
1533 if (Chain) {
1534 serialization::ModuleManager &Mgr = Chain->getModuleManager();
1535 Record.clear();
1536
1537 for (ModuleFile &M : Mgr) {
1538 // Skip modules that weren't directly imported.
1539 if (!M.isDirectlyImported())
1540 continue;
1541
1542 Record.push_back((unsigned)M.Kind); // FIXME: Stable encoding
1543 AddSourceLocation(M.ImportLoc, Record);
1544
1545 // If we have calculated signature, there is no need to store
1546 // the size or timestamp.
1547 Record.push_back(M.Signature ? 0 : M.File->getSize());
1548 Record.push_back(M.Signature ? 0 : getTimestampForOutput(M.File));
1549
1550 for (auto I : M.Signature)
1551 Record.push_back(I);
1552
1553 AddString(M.ModuleName, Record);
1554 AddPath(M.FileName, Record);
1555 }
1556 Stream.EmitRecord(IMPORTS, Record);
1557 }
1558
1559 // Write the options block.
1560 Stream.EnterSubblock(OPTIONS_BLOCK_ID, 4);
1561
1562 // Language options.
1563 Record.clear();
1564 const LangOptions &LangOpts = Context.getLangOpts();
1565#define LANGOPT(Name, Bits, Default, Description) \
1566 Record.push_back(LangOpts.Name);
1567#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1568 Record.push_back(static_cast<unsigned>(LangOpts.get##Name()));
1569#include "clang/Basic/LangOptions.def"
1570#define SANITIZER(NAME, ID) \
1571 Record.push_back(LangOpts.Sanitize.has(SanitizerKind::ID));
1572#include "clang/Basic/Sanitizers.def"
1573
1574 Record.push_back(LangOpts.ModuleFeatures.size());
1575 for (StringRef Feature : LangOpts.ModuleFeatures)
1576 AddString(Feature, Record);
1577
1578 Record.push_back((unsigned) LangOpts.ObjCRuntime.getKind());
1579 AddVersionTuple(LangOpts.ObjCRuntime.getVersion(), Record);
1580
1581 AddString(LangOpts.CurrentModule, Record);
1582
1583 // Comment options.
1584 Record.push_back(LangOpts.CommentOpts.BlockCommandNames.size());
1585 for (const auto &I : LangOpts.CommentOpts.BlockCommandNames) {
1586 AddString(I, Record);
1587 }
1588 Record.push_back(LangOpts.CommentOpts.ParseAllComments);
1589
1590 // OpenMP offloading options.
1591 Record.push_back(LangOpts.OMPTargetTriples.size());
1592 for (auto &T : LangOpts.OMPTargetTriples)
1593 AddString(T.getTriple(), Record);
1594
1595 AddString(LangOpts.OMPHostIRFile, Record);
1596
1597 Stream.EmitRecord(LANGUAGE_OPTIONS, Record);
1598
1599 // Target options.
1600 Record.clear();
1601 const TargetInfo &Target = Context.getTargetInfo();
1602 const TargetOptions &TargetOpts = Target.getTargetOpts();
1603 AddString(TargetOpts.Triple, Record);
1604 AddString(TargetOpts.CPU, Record);
1605 AddString(TargetOpts.ABI, Record);
1606 Record.push_back(TargetOpts.FeaturesAsWritten.size());
1607 for (unsigned I = 0, N = TargetOpts.FeaturesAsWritten.size(); I != N; ++I) {
1608 AddString(TargetOpts.FeaturesAsWritten[I], Record);
1609 }
1610 Record.push_back(TargetOpts.Features.size());
1611 for (unsigned I = 0, N = TargetOpts.Features.size(); I != N; ++I) {
1612 AddString(TargetOpts.Features[I], Record);
1613 }
1614 Stream.EmitRecord(TARGET_OPTIONS, Record);
1615
1616 // File system options.
1617 Record.clear();
1618 const FileSystemOptions &FSOpts =
1619 Context.getSourceManager().getFileManager().getFileSystemOpts();
1620 AddString(FSOpts.WorkingDir, Record);
1621 Stream.EmitRecord(FILE_SYSTEM_OPTIONS, Record);
1622
1623 // Header search options.
1624 Record.clear();
1625 const HeaderSearchOptions &HSOpts
1626 = PP.getHeaderSearchInfo().getHeaderSearchOpts();
1627 AddString(HSOpts.Sysroot, Record);
1628
1629 // Include entries.
1630 Record.push_back(HSOpts.UserEntries.size());
1631 for (unsigned I = 0, N = HSOpts.UserEntries.size(); I != N; ++I) {
1632 const HeaderSearchOptions::Entry &Entry = HSOpts.UserEntries[I];
1633 AddString(Entry.Path, Record);
1634 Record.push_back(static_cast<unsigned>(Entry.Group));
1635 Record.push_back(Entry.IsFramework);
1636 Record.push_back(Entry.IgnoreSysRoot);
1637 }
1638
1639 // System header prefixes.
1640 Record.push_back(HSOpts.SystemHeaderPrefixes.size());
1641 for (unsigned I = 0, N = HSOpts.SystemHeaderPrefixes.size(); I != N; ++I) {
1642 AddString(HSOpts.SystemHeaderPrefixes[I].Prefix, Record);
1643 Record.push_back(HSOpts.SystemHeaderPrefixes[I].IsSystemHeader);
1644 }
1645
1646 AddString(HSOpts.ResourceDir, Record);
1647 AddString(HSOpts.ModuleCachePath, Record);
1648 AddString(HSOpts.ModuleUserBuildPath, Record);
1649 Record.push_back(HSOpts.DisableModuleHash);
1650 Record.push_back(HSOpts.ImplicitModuleMaps);
1651 Record.push_back(HSOpts.ModuleMapFileHomeIsCwd);
1652 Record.push_back(HSOpts.UseBuiltinIncludes);
1653 Record.push_back(HSOpts.UseStandardSystemIncludes);
1654 Record.push_back(HSOpts.UseStandardCXXIncludes);
1655 Record.push_back(HSOpts.UseLibcxx);
1656 // Write out the specific module cache path that contains the module files.
1657 AddString(PP.getHeaderSearchInfo().getModuleCachePath(), Record);
1658 Stream.EmitRecord(HEADER_SEARCH_OPTIONS, Record);
1659
1660 // Preprocessor options.
1661 Record.clear();
1662 const PreprocessorOptions &PPOpts = PP.getPreprocessorOpts();
1663
1664 // Macro definitions.
1665 Record.push_back(PPOpts.Macros.size());
1666 for (unsigned I = 0, N = PPOpts.Macros.size(); I != N; ++I) {
1667 AddString(PPOpts.Macros[I].first, Record);
1668 Record.push_back(PPOpts.Macros[I].second);
1669 }
1670
1671 // Includes
1672 Record.push_back(PPOpts.Includes.size());
1673 for (unsigned I = 0, N = PPOpts.Includes.size(); I != N; ++I)
1674 AddString(PPOpts.Includes[I], Record);
1675
1676 // Macro includes
1677 Record.push_back(PPOpts.MacroIncludes.size());
1678 for (unsigned I = 0, N = PPOpts.MacroIncludes.size(); I != N; ++I)
1679 AddString(PPOpts.MacroIncludes[I], Record);
1680
1681 Record.push_back(PPOpts.UsePredefines);
1682 // Detailed record is important since it is used for the module cache hash.
1683 Record.push_back(PPOpts.DetailedRecord);
1684 AddString(PPOpts.ImplicitPCHInclude, Record);
1685 AddString(PPOpts.ImplicitPTHInclude, Record);
1686 Record.push_back(static_cast<unsigned>(PPOpts.ObjCXXARCStandardLibrary));
1687 Stream.EmitRecord(PREPROCESSOR_OPTIONS, Record);
1688
1689 // Leave the options block.
1690 Stream.ExitBlock();
1691
1692 // Original file name and file ID
1693 SourceManager &SM = Context.getSourceManager();
1694 if (const FileEntry *MainFile = SM.getFileEntryForID(SM.getMainFileID())) {
1695 auto FileAbbrev = std::make_shared<BitCodeAbbrev>();
1696 FileAbbrev->Add(BitCodeAbbrevOp(ORIGINAL_FILE));
1697 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // File ID
1698 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1699 unsigned FileAbbrevCode = Stream.EmitAbbrev(std::move(FileAbbrev));
1700
1701 Record.clear();
1702 Record.push_back(ORIGINAL_FILE);
1703 Record.push_back(SM.getMainFileID().getOpaqueValue());
1704 EmitRecordWithPath(FileAbbrevCode, Record, MainFile->getName());
1705 }
1706
1707 Record.clear();
1708 Record.push_back(SM.getMainFileID().getOpaqueValue());
1709 Stream.EmitRecord(ORIGINAL_FILE_ID, Record);
1710
1711 // Original PCH directory
1712 if (!OutputFile.empty() && OutputFile != "-") {
1713 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1714 Abbrev->Add(BitCodeAbbrevOp(ORIGINAL_PCH_DIR));
1715 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1716 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1717
1718 SmallString<128> OutputPath(OutputFile);
1719
1720 SM.getFileManager().makeAbsolutePath(OutputPath);
1721 StringRef origDir = llvm::sys::path::parent_path(OutputPath);
1722
1723 RecordData::value_type Record[] = {ORIGINAL_PCH_DIR};
1724 Stream.EmitRecordWithBlob(AbbrevCode, Record, origDir);
1725 }
1726
1727 WriteInputFiles(Context.SourceMgr,
1728 PP.getHeaderSearchInfo().getHeaderSearchOpts(),
1729 PP.getLangOpts().Modules);
1730 Stream.ExitBlock();
1731}
1732
1733namespace {
1734
1735/// \brief An input file.
1736struct InputFileEntry {
1737 const FileEntry *File;
1738 bool IsSystemFile;
1739 bool IsTransient;
1740 bool BufferOverridden;
1741 bool IsTopLevelModuleMap;
1742};
1743
1744} // namespace
1745
1746void ASTWriter::WriteInputFiles(SourceManager &SourceMgr,
1747 HeaderSearchOptions &HSOpts,
1748 bool Modules) {
1749 using namespace llvm;
1750
1751 Stream.EnterSubblock(INPUT_FILES_BLOCK_ID, 4);
1752
1753 // Create input-file abbreviation.
1754 auto IFAbbrev = std::make_shared<BitCodeAbbrev>();
1755 IFAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE));
1756 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
1757 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 12)); // Size
1758 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // Modification time
1759 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Overridden
1760 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Transient
1761 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Module map
1762 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1763 unsigned IFAbbrevCode = Stream.EmitAbbrev(std::move(IFAbbrev));
1764
1765 // Get all ContentCache objects for files, sorted by whether the file is a
1766 // system one or not. System files go at the back, users files at the front.
1767 std::deque<InputFileEntry> SortedFiles;
1768 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size(); I != N; ++I) {
1769 // Get this source location entry.
1770 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
1771 assert(&SourceMgr.getSLocEntry(FileID::get(I)) == SLoc)(static_cast <bool> (&SourceMgr.getSLocEntry(FileID
::get(I)) == SLoc) ? void (0) : __assert_fail ("&SourceMgr.getSLocEntry(FileID::get(I)) == SLoc"
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1771, __extension__ __PRETTY_FUNCTION__))
;
1772
1773 // We only care about file entries that were not overridden.
1774 if (!SLoc->isFile())
1775 continue;
1776 const SrcMgr::FileInfo &File = SLoc->getFile();
1777 const SrcMgr::ContentCache *Cache = File.getContentCache();
1778 if (!Cache->OrigEntry)
1779 continue;
1780
1781 InputFileEntry Entry;
1782 Entry.File = Cache->OrigEntry;
1783 Entry.IsSystemFile = Cache->IsSystemFile;
1784 Entry.IsTransient = Cache->IsTransient;
1785 Entry.BufferOverridden = Cache->BufferOverridden;
1786 Entry.IsTopLevelModuleMap = isModuleMap(File.getFileCharacteristic()) &&
1787 File.getIncludeLoc().isInvalid();
1788 if (Cache->IsSystemFile)
1789 SortedFiles.push_back(Entry);
1790 else
1791 SortedFiles.push_front(Entry);
1792 }
1793
1794 unsigned UserFilesNum = 0;
1795 // Write out all of the input files.
1796 std::vector<uint64_t> InputFileOffsets;
1797 for (const auto &Entry : SortedFiles) {
1798 uint32_t &InputFileID = InputFileIDs[Entry.File];
1799 if (InputFileID != 0)
1800 continue; // already recorded this file.
1801
1802 // Record this entry's offset.
1803 InputFileOffsets.push_back(Stream.GetCurrentBitNo());
1804
1805 InputFileID = InputFileOffsets.size();
1806
1807 if (!Entry.IsSystemFile)
1808 ++UserFilesNum;
1809
1810 // Emit size/modification time for this file.
1811 // And whether this file was overridden.
1812 RecordData::value_type Record[] = {
1813 INPUT_FILE,
1814 InputFileOffsets.size(),
1815 (uint64_t)Entry.File->getSize(),
1816 (uint64_t)getTimestampForOutput(Entry.File),
1817 Entry.BufferOverridden,
1818 Entry.IsTransient,
1819 Entry.IsTopLevelModuleMap};
1820
1821 EmitRecordWithPath(IFAbbrevCode, Record, Entry.File->getName());
1822 }
1823
1824 Stream.ExitBlock();
1825
1826 // Create input file offsets abbreviation.
1827 auto OffsetsAbbrev = std::make_shared<BitCodeAbbrev>();
1828 OffsetsAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE_OFFSETS));
1829 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # input files
1830 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # non-system
1831 // input files
1832 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Array
1833 unsigned OffsetsAbbrevCode = Stream.EmitAbbrev(std::move(OffsetsAbbrev));
1834
1835 // Write input file offsets.
1836 RecordData::value_type Record[] = {INPUT_FILE_OFFSETS,
1837 InputFileOffsets.size(), UserFilesNum};
1838 Stream.EmitRecordWithBlob(OffsetsAbbrevCode, Record, bytes(InputFileOffsets));
1839}
1840
1841//===----------------------------------------------------------------------===//
1842// Source Manager Serialization
1843//===----------------------------------------------------------------------===//
1844
1845/// \brief Create an abbreviation for the SLocEntry that refers to a
1846/// file.
1847static unsigned CreateSLocFileAbbrev(llvm::BitstreamWriter &Stream) {
1848 using namespace llvm;
1849
1850 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1851 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_FILE_ENTRY));
1852 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1853 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1854 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1855 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1856 // FileEntry fields.
1857 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Input File ID
1858 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumCreatedFIDs
1859 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 24)); // FirstDeclIndex
1860 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumDecls
1861 return Stream.EmitAbbrev(std::move(Abbrev));
1862}
1863
1864/// \brief Create an abbreviation for the SLocEntry that refers to a
1865/// buffer.
1866static unsigned CreateSLocBufferAbbrev(llvm::BitstreamWriter &Stream) {
1867 using namespace llvm;
1868
1869 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1870 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_BUFFER_ENTRY));
1871 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1872 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1873 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1874 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1875 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Buffer name blob
1876 return Stream.EmitAbbrev(std::move(Abbrev));
1877}
1878
1879/// \brief Create an abbreviation for the SLocEntry that refers to a
1880/// buffer's blob.
1881static unsigned CreateSLocBufferBlobAbbrev(llvm::BitstreamWriter &Stream,
1882 bool Compressed) {
1883 using namespace llvm;
1884
1885 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1886 Abbrev->Add(BitCodeAbbrevOp(Compressed ? SM_SLOC_BUFFER_BLOB_COMPRESSED
1887 : SM_SLOC_BUFFER_BLOB));
1888 if (Compressed)
1889 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Uncompressed size
1890 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Blob
1891 return Stream.EmitAbbrev(std::move(Abbrev));
1892}
1893
1894/// \brief Create an abbreviation for the SLocEntry that refers to a macro
1895/// expansion.
1896static unsigned CreateSLocExpansionAbbrev(llvm::BitstreamWriter &Stream) {
1897 using namespace llvm;
1898
1899 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1900 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_EXPANSION_ENTRY));
1901 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1902 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Spelling location
1903 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Start location
1904 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // End location
1905 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Token length
1906 return Stream.EmitAbbrev(std::move(Abbrev));
1907}
1908
1909namespace {
1910
1911 // Trait used for the on-disk hash table of header search information.
1912 class HeaderFileInfoTrait {
1913 ASTWriter &Writer;
1914
1915 // Keep track of the framework names we've used during serialization.
1916 SmallVector<char, 128> FrameworkStringData;
1917 llvm::StringMap<unsigned> FrameworkNameOffset;
1918
1919 public:
1920 HeaderFileInfoTrait(ASTWriter &Writer) : Writer(Writer) {}
1921
1922 struct key_type {
1923 StringRef Filename;
1924 off_t Size;
1925 time_t ModTime;
1926 };
1927 using key_type_ref = const key_type &;
1928
1929 using UnresolvedModule =
1930 llvm::PointerIntPair<Module *, 2, ModuleMap::ModuleHeaderRole>;
1931
1932 struct data_type {
1933 const HeaderFileInfo &HFI;
1934 ArrayRef<ModuleMap::KnownHeader> KnownHeaders;
1935 UnresolvedModule Unresolved;
1936 };
1937 using data_type_ref = const data_type &;
1938
1939 using hash_value_type = unsigned;
1940 using offset_type = unsigned;
1941
1942 hash_value_type ComputeHash(key_type_ref key) {
1943 // The hash is based only on size/time of the file, so that the reader can
1944 // match even when symlinking or excess path elements ("foo/../", "../")
1945 // change the form of the name. However, complete path is still the key.
1946 return llvm::hash_combine(key.Size, key.ModTime);
1947 }
1948
1949 std::pair<unsigned, unsigned>
1950 EmitKeyDataLength(raw_ostream& Out, key_type_ref key, data_type_ref Data) {
1951 using namespace llvm::support;
1952
1953 endian::Writer<little> LE(Out);
1954 unsigned KeyLen = key.Filename.size() + 1 + 8 + 8;
1955 LE.write<uint16_t>(KeyLen);
1956 unsigned DataLen = 1 + 2 + 4 + 4;
1957 for (auto ModInfo : Data.KnownHeaders)
1958 if (Writer.getLocalOrImportedSubmoduleID(ModInfo.getModule()))
1959 DataLen += 4;
1960 if (Data.Unresolved.getPointer())
1961 DataLen += 4;
1962 LE.write<uint8_t>(DataLen);
1963 return std::make_pair(KeyLen, DataLen);
1964 }
1965
1966 void EmitKey(raw_ostream& Out, key_type_ref key, unsigned KeyLen) {
1967 using namespace llvm::support;
1968
1969 endian::Writer<little> LE(Out);
1970 LE.write<uint64_t>(key.Size);
1971 KeyLen -= 8;
1972 LE.write<uint64_t>(key.ModTime);
1973 KeyLen -= 8;
1974 Out.write(key.Filename.data(), KeyLen);
1975 }
1976
1977 void EmitData(raw_ostream &Out, key_type_ref key,
1978 data_type_ref Data, unsigned DataLen) {
1979 using namespace llvm::support;
1980
1981 endian::Writer<little> LE(Out);
1982 uint64_t Start = Out.tell(); (void)Start;
1983
1984 unsigned char Flags = (Data.HFI.isImport << 5)
1985 | (Data.HFI.isPragmaOnce << 4)
1986 | (Data.HFI.DirInfo << 1)
1987 | Data.HFI.IndexHeaderMapHeader;
1988 LE.write<uint8_t>(Flags);
1989 LE.write<uint16_t>(Data.HFI.NumIncludes);
1990
1991 if (!Data.HFI.ControllingMacro)
1992 LE.write<uint32_t>(Data.HFI.ControllingMacroID);
1993 else
1994 LE.write<uint32_t>(Writer.getIdentifierRef(Data.HFI.ControllingMacro));
1995
1996 unsigned Offset = 0;
1997 if (!Data.HFI.Framework.empty()) {
1998 // If this header refers into a framework, save the framework name.
1999 llvm::StringMap<unsigned>::iterator Pos
2000 = FrameworkNameOffset.find(Data.HFI.Framework);
2001 if (Pos == FrameworkNameOffset.end()) {
2002 Offset = FrameworkStringData.size() + 1;
2003 FrameworkStringData.append(Data.HFI.Framework.begin(),
2004 Data.HFI.Framework.end());
2005 FrameworkStringData.push_back(0);
2006
2007 FrameworkNameOffset[Data.HFI.Framework] = Offset;
2008 } else
2009 Offset = Pos->second;
2010 }
2011 LE.write<uint32_t>(Offset);
2012
2013 auto EmitModule = [&](Module *M, ModuleMap::ModuleHeaderRole Role) {
2014 if (uint32_t ModID = Writer.getLocalOrImportedSubmoduleID(M)) {
2015 uint32_t Value = (ModID << 2) | (unsigned)Role;
2016 assert((Value >> 2) == ModID && "overflow in header module info")(static_cast <bool> ((Value >> 2) == ModID &&
"overflow in header module info") ? void (0) : __assert_fail
("(Value >> 2) == ModID && \"overflow in header module info\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2016, __extension__ __PRETTY_FUNCTION__))
;
2017 LE.write<uint32_t>(Value);
2018 }
2019 };
2020
2021 // FIXME: If the header is excluded, we should write out some
2022 // record of that fact.
2023 for (auto ModInfo : Data.KnownHeaders)
2024 EmitModule(ModInfo.getModule(), ModInfo.getRole());
2025 if (Data.Unresolved.getPointer())
2026 EmitModule(Data.Unresolved.getPointer(), Data.Unresolved.getInt());
2027
2028 assert(Out.tell() - Start == DataLen && "Wrong data length")(static_cast <bool> (Out.tell() - Start == DataLen &&
"Wrong data length") ? void (0) : __assert_fail ("Out.tell() - Start == DataLen && \"Wrong data length\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2028, __extension__ __PRETTY_FUNCTION__))
;
2029 }
2030
2031 const char *strings_begin() const { return FrameworkStringData.begin(); }
2032 const char *strings_end() const { return FrameworkStringData.end(); }
2033 };
2034
2035} // namespace
2036
2037/// \brief Write the header search block for the list of files that
2038///
2039/// \param HS The header search structure to save.
2040void ASTWriter::WriteHeaderSearch(const HeaderSearch &HS) {
2041 HeaderFileInfoTrait GeneratorTrait(*this);
2042 llvm::OnDiskChainedHashTableGenerator<HeaderFileInfoTrait> Generator;
2043 SmallVector<const char *, 4> SavedStrings;
2044 unsigned NumHeaderSearchEntries = 0;
2045
2046 // Find all unresolved headers for the current module. We generally will
2047 // have resolved them before we get here, but not necessarily: we might be
2048 // compiling a preprocessed module, where there is no requirement for the
2049 // original files to exist any more.
2050 const HeaderFileInfo Empty; // So we can take a reference.
2051 if (WritingModule) {
2052 llvm::SmallVector<Module *, 16> Worklist(1, WritingModule);
2053 while (!Worklist.empty()) {
2054 Module *M = Worklist.pop_back_val();
2055 if (!M->isAvailable())
2056 continue;
2057
2058 // Map to disk files where possible, to pick up any missing stat
2059 // information. This also means we don't need to check the unresolved
2060 // headers list when emitting resolved headers in the first loop below.
2061 // FIXME: It'd be preferable to avoid doing this if we were given
2062 // sufficient stat information in the module map.
2063 HS.getModuleMap().resolveHeaderDirectives(M);
2064
2065 // If the file didn't exist, we can still create a module if we were given
2066 // enough information in the module map.
2067 for (auto U : M->MissingHeaders) {
2068 // Check that we were given enough information to build a module
2069 // without this file existing on disk.
2070 if (!U.Size || (!U.ModTime && IncludeTimestamps)) {
2071 PP->Diag(U.FileNameLoc, diag::err_module_no_size_mtime_for_header)
2072 << WritingModule->getFullModuleName() << U.Size.hasValue()
2073 << U.FileName;
2074 continue;
2075 }
2076
2077 // Form the effective relative pathname for the file.
2078 SmallString<128> Filename(M->Directory->getName());
2079 llvm::sys::path::append(Filename, U.FileName);
2080 PreparePathForOutput(Filename);
2081
2082 StringRef FilenameDup = strdup(Filename.c_str());
2083 SavedStrings.push_back(FilenameDup.data());
2084
2085 HeaderFileInfoTrait::key_type Key = {
2086 FilenameDup, *U.Size, IncludeTimestamps ? *U.ModTime : 0
2087 };
2088 HeaderFileInfoTrait::data_type Data = {
2089 Empty, {}, {M, ModuleMap::headerKindToRole(U.Kind)}
2090 };
2091 // FIXME: Deal with cases where there are multiple unresolved header
2092 // directives in different submodules for the same header.
2093 Generator.insert(Key, Data, GeneratorTrait);
2094 ++NumHeaderSearchEntries;
2095 }
2096
2097 Worklist.append(M->submodule_begin(), M->submodule_end());
2098 }
2099 }
2100
2101 SmallVector<const FileEntry *, 16> FilesByUID;
2102 HS.getFileMgr().GetUniqueIDMapping(FilesByUID);
2103
2104 if (FilesByUID.size() > HS.header_file_size())
2105 FilesByUID.resize(HS.header_file_size());
2106
2107 for (unsigned UID = 0, LastUID = FilesByUID.size(); UID != LastUID; ++UID) {
2108 const FileEntry *File = FilesByUID[UID];
2109 if (!File)
2110 continue;
2111
2112 // Get the file info. This will load info from the external source if
2113 // necessary. Skip emitting this file if we have no information on it
2114 // as a header file (in which case HFI will be null) or if it hasn't
2115 // changed since it was loaded. Also skip it if it's for a modular header
2116 // from a different module; in that case, we rely on the module(s)
2117 // containing the header to provide this information.
2118 const HeaderFileInfo *HFI =
2119 HS.getExistingFileInfo(File, /*WantExternal*/!Chain);
2120 if (!HFI || (HFI->isModuleHeader && !HFI->isCompilingModuleHeader))
2121 continue;
2122
2123 // Massage the file path into an appropriate form.
2124 StringRef Filename = File->getName();
2125 SmallString<128> FilenameTmp(Filename);
2126 if (PreparePathForOutput(FilenameTmp)) {
2127 // If we performed any translation on the file name at all, we need to
2128 // save this string, since the generator will refer to it later.
2129 Filename = StringRef(strdup(FilenameTmp.c_str()));
2130 SavedStrings.push_back(Filename.data());
2131 }
2132
2133 HeaderFileInfoTrait::key_type Key = {
2134 Filename, File->getSize(), getTimestampForOutput(File)
2135 };
2136 HeaderFileInfoTrait::data_type Data = {
2137 *HFI, HS.getModuleMap().findAllModulesForHeader(File), {}
2138 };
2139 Generator.insert(Key, Data, GeneratorTrait);
2140 ++NumHeaderSearchEntries;
2141 }
2142
2143 // Create the on-disk hash table in a buffer.
2144 SmallString<4096> TableData;
2145 uint32_t BucketOffset;
2146 {
2147 using namespace llvm::support;
2148
2149 llvm::raw_svector_ostream Out(TableData);
2150 // Make sure that no bucket is at offset 0
2151 endian::Writer<little>(Out).write<uint32_t>(0);
2152 BucketOffset = Generator.Emit(Out, GeneratorTrait);
2153 }
2154
2155 // Create a blob abbreviation
2156 using namespace llvm;
2157
2158 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2159 Abbrev->Add(BitCodeAbbrevOp(HEADER_SEARCH_TABLE));
2160 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2161 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2162 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2163 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2164 unsigned TableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2165
2166 // Write the header search table
2167 RecordData::value_type Record[] = {HEADER_SEARCH_TABLE, BucketOffset,
2168 NumHeaderSearchEntries, TableData.size()};
2169 TableData.append(GeneratorTrait.strings_begin(),GeneratorTrait.strings_end());
2170 Stream.EmitRecordWithBlob(TableAbbrev, Record, TableData);
2171
2172 // Free all of the strings we had to duplicate.
2173 for (unsigned I = 0, N = SavedStrings.size(); I != N; ++I)
2174 free(const_cast<char *>(SavedStrings[I]));
2175}
2176
2177static void emitBlob(llvm::BitstreamWriter &Stream, StringRef Blob,
2178 unsigned SLocBufferBlobCompressedAbbrv,
2179 unsigned SLocBufferBlobAbbrv) {
2180 using RecordDataType = ASTWriter::RecordData::value_type;
2181
2182 // Compress the buffer if possible. We expect that almost all PCM
2183 // consumers will not want its contents.
2184 SmallString<0> CompressedBuffer;
2185 if (llvm::zlib::isAvailable()) {
2186 llvm::Error E = llvm::zlib::compress(Blob.drop_back(1), CompressedBuffer);
2187 if (!E) {
2188 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB_COMPRESSED,
2189 Blob.size() - 1};
2190 Stream.EmitRecordWithBlob(SLocBufferBlobCompressedAbbrv, Record,
2191 CompressedBuffer);
2192 return;
2193 }
2194 llvm::consumeError(std::move(E));
2195 }
2196
2197 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB};
2198 Stream.EmitRecordWithBlob(SLocBufferBlobAbbrv, Record, Blob);
2199}
2200
2201/// \brief Writes the block containing the serialized form of the
2202/// source manager.
2203///
2204/// TODO: We should probably use an on-disk hash table (stored in a
2205/// blob), indexed based on the file name, so that we only create
2206/// entries for files that we actually need. In the common case (no
2207/// errors), we probably won't have to create file entries for any of
2208/// the files in the AST.
2209void ASTWriter::WriteSourceManagerBlock(SourceManager &SourceMgr,
2210 const Preprocessor &PP) {
2211 RecordData Record;
2212
2213 // Enter the source manager block.
2214 Stream.EnterSubblock(SOURCE_MANAGER_BLOCK_ID, 4);
2215
2216 // Abbreviations for the various kinds of source-location entries.
2217 unsigned SLocFileAbbrv = CreateSLocFileAbbrev(Stream);
2218 unsigned SLocBufferAbbrv = CreateSLocBufferAbbrev(Stream);
2219 unsigned SLocBufferBlobAbbrv = CreateSLocBufferBlobAbbrev(Stream, false);
2220 unsigned SLocBufferBlobCompressedAbbrv =
2221 CreateSLocBufferBlobAbbrev(Stream, true);
2222 unsigned SLocExpansionAbbrv = CreateSLocExpansionAbbrev(Stream);
2223
2224 // Write out the source location entry table. We skip the first
2225 // entry, which is always the same dummy entry.
2226 std::vector<uint32_t> SLocEntryOffsets;
2227 RecordData PreloadSLocs;
2228 SLocEntryOffsets.reserve(SourceMgr.local_sloc_entry_size() - 1);
2229 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size();
2230 I != N; ++I) {
2231 // Get this source location entry.
2232 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
2233 FileID FID = FileID::get(I);
2234 assert(&SourceMgr.getSLocEntry(FID) == SLoc)(static_cast <bool> (&SourceMgr.getSLocEntry(FID) ==
SLoc) ? void (0) : __assert_fail ("&SourceMgr.getSLocEntry(FID) == SLoc"
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2234, __extension__ __PRETTY_FUNCTION__))
;
2235
2236 // Record the offset of this source-location entry.
2237 SLocEntryOffsets.push_back(Stream.GetCurrentBitNo());
2238
2239 // Figure out which record code to use.
2240 unsigned Code;
2241 if (SLoc->isFile()) {
2242 const SrcMgr::ContentCache *Cache = SLoc->getFile().getContentCache();
2243 if (Cache->OrigEntry) {
2244 Code = SM_SLOC_FILE_ENTRY;
2245 } else
2246 Code = SM_SLOC_BUFFER_ENTRY;
2247 } else
2248 Code = SM_SLOC_EXPANSION_ENTRY;
2249 Record.clear();
2250 Record.push_back(Code);
2251
2252 // Starting offset of this entry within this module, so skip the dummy.
2253 Record.push_back(SLoc->getOffset() - 2);
2254 if (SLoc->isFile()) {
2255 const SrcMgr::FileInfo &File = SLoc->getFile();
2256 AddSourceLocation(File.getIncludeLoc(), Record);
2257 Record.push_back(File.getFileCharacteristic()); // FIXME: stable encoding
2258 Record.push_back(File.hasLineDirectives());
2259
2260 const SrcMgr::ContentCache *Content = File.getContentCache();
2261 bool EmitBlob = false;
2262 if (Content->OrigEntry) {
2263 assert(Content->OrigEntry == Content->ContentsEntry &&(static_cast <bool> (Content->OrigEntry == Content->
ContentsEntry && "Writing to AST an overridden file is not supported"
) ? void (0) : __assert_fail ("Content->OrigEntry == Content->ContentsEntry && \"Writing to AST an overridden file is not supported\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2264, __extension__ __PRETTY_FUNCTION__))
2264 "Writing to AST an overridden file is not supported")(static_cast <bool> (Content->OrigEntry == Content->
ContentsEntry && "Writing to AST an overridden file is not supported"
) ? void (0) : __assert_fail ("Content->OrigEntry == Content->ContentsEntry && \"Writing to AST an overridden file is not supported\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2264, __extension__ __PRETTY_FUNCTION__))
;
2265
2266 // The source location entry is a file. Emit input file ID.
2267 assert(InputFileIDs[Content->OrigEntry] != 0 && "Missed file entry")(static_cast <bool> (InputFileIDs[Content->OrigEntry
] != 0 && "Missed file entry") ? void (0) : __assert_fail
("InputFileIDs[Content->OrigEntry] != 0 && \"Missed file entry\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2267, __extension__ __PRETTY_FUNCTION__))
;
2268 Record.push_back(InputFileIDs[Content->OrigEntry]);
2269
2270 Record.push_back(File.NumCreatedFIDs);
2271
2272 FileDeclIDsTy::iterator FDI = FileDeclIDs.find(FID);
2273 if (FDI != FileDeclIDs.end()) {
2274 Record.push_back(FDI->second->FirstDeclIndex);
2275 Record.push_back(FDI->second->DeclIDs.size());
2276 } else {
2277 Record.push_back(0);
2278 Record.push_back(0);
2279 }
2280
2281 Stream.EmitRecordWithAbbrev(SLocFileAbbrv, Record);
2282
2283 if (Content->BufferOverridden || Content->IsTransient)
2284 EmitBlob = true;
2285 } else {
2286 // The source location entry is a buffer. The blob associated
2287 // with this entry contains the contents of the buffer.
2288
2289 // We add one to the size so that we capture the trailing NULL
2290 // that is required by llvm::MemoryBuffer::getMemBuffer (on
2291 // the reader side).
2292 const llvm::MemoryBuffer *Buffer
2293 = Content->getBuffer(PP.getDiagnostics(), PP.getSourceManager());
2294 StringRef Name = Buffer->getBufferIdentifier();
2295 Stream.EmitRecordWithBlob(SLocBufferAbbrv, Record,
2296 StringRef(Name.data(), Name.size() + 1));
2297 EmitBlob = true;
2298
2299 if (Name == "<built-in>")
2300 PreloadSLocs.push_back(SLocEntryOffsets.size());
2301 }
2302
2303 if (EmitBlob) {
2304 // Include the implicit terminating null character in the on-disk buffer
2305 // if we're writing it uncompressed.
2306 const llvm::MemoryBuffer *Buffer =
2307 Content->getBuffer(PP.getDiagnostics(), PP.getSourceManager());
2308 StringRef Blob(Buffer->getBufferStart(), Buffer->getBufferSize() + 1);
2309 emitBlob(Stream, Blob, SLocBufferBlobCompressedAbbrv,
2310 SLocBufferBlobAbbrv);
2311 }
2312 } else {
2313 // The source location entry is a macro expansion.
2314 const SrcMgr::ExpansionInfo &Expansion = SLoc->getExpansion();
2315 AddSourceLocation(Expansion.getSpellingLoc(), Record);
2316 AddSourceLocation(Expansion.getExpansionLocStart(), Record);
2317 AddSourceLocation(Expansion.isMacroArgExpansion()
2318 ? SourceLocation()
2319 : Expansion.getExpansionLocEnd(),
2320 Record);
2321
2322 // Compute the token length for this macro expansion.
2323 unsigned NextOffset = SourceMgr.getNextLocalOffset();
2324 if (I + 1 != N)
2325 NextOffset = SourceMgr.getLocalSLocEntry(I + 1).getOffset();
2326 Record.push_back(NextOffset - SLoc->getOffset() - 1);
2327 Stream.EmitRecordWithAbbrev(SLocExpansionAbbrv, Record);
2328 }
2329 }
2330
2331 Stream.ExitBlock();
2332
2333 if (SLocEntryOffsets.empty())
2334 return;
2335
2336 // Write the source-location offsets table into the AST block. This
2337 // table is used for lazily loading source-location information.
2338 using namespace llvm;
2339
2340 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2341 Abbrev->Add(BitCodeAbbrevOp(SOURCE_LOCATION_OFFSETS));
2342 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs
2343 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // total size
2344 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets
2345 unsigned SLocOffsetsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2346 {
2347 RecordData::value_type Record[] = {
2348 SOURCE_LOCATION_OFFSETS, SLocEntryOffsets.size(),
2349 SourceMgr.getNextLocalOffset() - 1 /* skip dummy */};
2350 Stream.EmitRecordWithBlob(SLocOffsetsAbbrev, Record,
2351 bytes(SLocEntryOffsets));
2352 }
2353 // Write the source location entry preloads array, telling the AST
2354 // reader which source locations entries it should load eagerly.
2355 Stream.EmitRecord(SOURCE_LOCATION_PRELOADS, PreloadSLocs);
2356
2357 // Write the line table. It depends on remapping working, so it must come
2358 // after the source location offsets.
2359 if (SourceMgr.hasLineTable()) {
2360 LineTableInfo &LineTable = SourceMgr.getLineTable();
2361
2362 Record.clear();
2363
2364 // Emit the needed file names.
2365 llvm::DenseMap<int, int> FilenameMap;
2366 for (const auto &L : LineTable) {
2367 if (L.first.ID < 0)
2368 continue;
2369 for (auto &LE : L.second) {
2370 if (FilenameMap.insert(std::make_pair(LE.FilenameID,
2371 FilenameMap.size())).second)
2372 AddPath(LineTable.getFilename(LE.FilenameID), Record);
2373 }
2374 }
2375 Record.push_back(0);
2376
2377 // Emit the line entries
2378 for (const auto &L : LineTable) {
2379 // Only emit entries for local files.
2380 if (L.first.ID < 0)
2381 continue;
2382
2383 // Emit the file ID
2384 Record.push_back(L.first.ID);
2385
2386 // Emit the line entries
2387 Record.push_back(L.second.size());
2388 for (const auto &LE : L.second) {
2389 Record.push_back(LE.FileOffset);
2390 Record.push_back(LE.LineNo);
2391 Record.push_back(FilenameMap[LE.FilenameID]);
2392 Record.push_back((unsigned)LE.FileKind);
2393 Record.push_back(LE.IncludeOffset);
2394 }
2395 }
2396
2397 Stream.EmitRecord(SOURCE_MANAGER_LINE_TABLE, Record);
2398 }
2399}
2400
2401//===----------------------------------------------------------------------===//
2402// Preprocessor Serialization
2403//===----------------------------------------------------------------------===//
2404
2405static bool shouldIgnoreMacro(MacroDirective *MD, bool IsModule,
2406 const Preprocessor &PP) {
2407 if (MacroInfo *MI = MD->getMacroInfo())
2408 if (MI->isBuiltinMacro())
2409 return true;
2410
2411 if (IsModule) {
2412 SourceLocation Loc = MD->getLocation();
2413 if (Loc.isInvalid())
2414 return true;
2415 if (PP.getSourceManager().getFileID(Loc) == PP.getPredefinesFileID())
2416 return true;
2417 }
2418
2419 return false;
2420}
2421
2422/// \brief Writes the block containing the serialized form of the
2423/// preprocessor.
2424void ASTWriter::WritePreprocessor(const Preprocessor &PP, bool IsModule) {
2425 PreprocessingRecord *PPRec = PP.getPreprocessingRecord();
2426 if (PPRec)
2427 WritePreprocessorDetail(*PPRec);
2428
2429 RecordData Record;
2430 RecordData ModuleMacroRecord;
2431
2432 // If the preprocessor __COUNTER__ value has been bumped, remember it.
2433 if (PP.getCounterValue() != 0) {
2434 RecordData::value_type Record[] = {PP.getCounterValue()};
2435 Stream.EmitRecord(PP_COUNTER_VALUE, Record);
2436 }
2437
2438 if (PP.isRecordingPreamble() && PP.hasRecordedPreamble()) {
2439 assert(!IsModule)(static_cast <bool> (!IsModule) ? void (0) : __assert_fail
("!IsModule", "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2439, __extension__ __PRETTY_FUNCTION__))
;
2440 auto SkipInfo = PP.getPreambleSkipInfo();
2441 if (SkipInfo.hasValue()) {
2442 Record.push_back(true);
2443 AddSourceLocation(SkipInfo->HashTokenLoc, Record);
2444 AddSourceLocation(SkipInfo->IfTokenLoc, Record);
2445 Record.push_back(SkipInfo->FoundNonSkipPortion);
2446 Record.push_back(SkipInfo->FoundElse);
2447 AddSourceLocation(SkipInfo->ElseLoc, Record);
2448 } else {
2449 Record.push_back(false);
2450 }
2451 for (const auto &Cond : PP.getPreambleConditionalStack()) {
2452 AddSourceLocation(Cond.IfLoc, Record);
2453 Record.push_back(Cond.WasSkipping);
2454 Record.push_back(Cond.FoundNonSkip);
2455 Record.push_back(Cond.FoundElse);
2456 }
2457 Stream.EmitRecord(PP_CONDITIONAL_STACK, Record);
2458 Record.clear();
2459 }
2460
2461 // Enter the preprocessor block.
2462 Stream.EnterSubblock(PREPROCESSOR_BLOCK_ID, 3);
2463
2464 // If the AST file contains __DATE__ or __TIME__ emit a warning about this.
2465 // FIXME: Include a location for the use, and say which one was used.
2466 if (PP.SawDateOrTime())
2467 PP.Diag(SourceLocation(), diag::warn_module_uses_date_time) << IsModule;
2468
2469 // Loop over all the macro directives that are live at the end of the file,
2470 // emitting each to the PP section.
2471
2472 // Construct the list of identifiers with macro directives that need to be
2473 // serialized.
2474 SmallVector<const IdentifierInfo *, 128> MacroIdentifiers;
2475 for (auto &Id : PP.getIdentifierTable())
2476 if (Id.second->hadMacroDefinition() &&
2477 (!Id.second->isFromAST() ||
2478 Id.second->hasChangedSinceDeserialization()))
2479 MacroIdentifiers.push_back(Id.second);
2480 // Sort the set of macro definitions that need to be serialized by the
2481 // name of the macro, to provide a stable ordering.
2482 std::sort(MacroIdentifiers.begin(), MacroIdentifiers.end(),
2483 llvm::less_ptr<IdentifierInfo>());
2484
2485 // Emit the macro directives as a list and associate the offset with the
2486 // identifier they belong to.
2487 for (const IdentifierInfo *Name : MacroIdentifiers) {
2488 MacroDirective *MD = PP.getLocalMacroDirectiveHistory(Name);
2489 auto StartOffset = Stream.GetCurrentBitNo();
2490
2491 // Emit the macro directives in reverse source order.
2492 for (; MD; MD = MD->getPrevious()) {
2493 // Once we hit an ignored macro, we're done: the rest of the chain
2494 // will all be ignored macros.
2495 if (shouldIgnoreMacro(MD, IsModule, PP))
2496 break;
2497
2498 AddSourceLocation(MD->getLocation(), Record);
2499 Record.push_back(MD->getKind());
2500 if (auto *DefMD = dyn_cast<DefMacroDirective>(MD)) {
2501 Record.push_back(getMacroRef(DefMD->getInfo(), Name));
2502 } else if (auto *VisMD = dyn_cast<VisibilityMacroDirective>(MD)) {
2503 Record.push_back(VisMD->isPublic());
2504 }
2505 }
2506
2507 // Write out any exported module macros.
2508 bool EmittedModuleMacros = false;
2509 // We write out exported module macros for PCH as well.
2510 auto Leafs = PP.getLeafModuleMacros(Name);
2511 SmallVector<ModuleMacro*, 8> Worklist(Leafs.begin(), Leafs.end());
2512 llvm::DenseMap<ModuleMacro*, unsigned> Visits;
2513 while (!Worklist.empty()) {
2514 auto *Macro = Worklist.pop_back_val();
2515
2516 // Emit a record indicating this submodule exports this macro.
2517 ModuleMacroRecord.push_back(
2518 getSubmoduleID(Macro->getOwningModule()));
2519 ModuleMacroRecord.push_back(getMacroRef(Macro->getMacroInfo(), Name));
2520 for (auto *M : Macro->overrides())
2521 ModuleMacroRecord.push_back(getSubmoduleID(M->getOwningModule()));
2522
2523 Stream.EmitRecord(PP_MODULE_MACRO, ModuleMacroRecord);
2524 ModuleMacroRecord.clear();
2525
2526 // Enqueue overridden macros once we've visited all their ancestors.
2527 for (auto *M : Macro->overrides())
2528 if (++Visits[M] == M->getNumOverridingMacros())
2529 Worklist.push_back(M);
2530
2531 EmittedModuleMacros = true;
2532 }
2533
2534 if (Record.empty() && !EmittedModuleMacros)
2535 continue;
2536
2537 IdentMacroDirectivesOffsetMap[Name] = StartOffset;
2538 Stream.EmitRecord(PP_MACRO_DIRECTIVE_HISTORY, Record);
2539 Record.clear();
2540 }
2541
2542 /// \brief Offsets of each of the macros into the bitstream, indexed by
2543 /// the local macro ID
2544 ///
2545 /// For each identifier that is associated with a macro, this map
2546 /// provides the offset into the bitstream where that macro is
2547 /// defined.
2548 std::vector<uint32_t> MacroOffsets;
2549
2550 for (unsigned I = 0, N = MacroInfosToEmit.size(); I != N; ++I) {
2551 const IdentifierInfo *Name = MacroInfosToEmit[I].Name;
2552 MacroInfo *MI = MacroInfosToEmit[I].MI;
2553 MacroID ID = MacroInfosToEmit[I].ID;
2554
2555 if (ID < FirstMacroID) {
2556 assert(0 && "Loaded MacroInfo entered MacroInfosToEmit ?")(static_cast <bool> (0 && "Loaded MacroInfo entered MacroInfosToEmit ?"
) ? void (0) : __assert_fail ("0 && \"Loaded MacroInfo entered MacroInfosToEmit ?\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2556, __extension__ __PRETTY_FUNCTION__))
;
2557 continue;
2558 }
2559
2560 // Record the local offset of this macro.
2561 unsigned Index = ID - FirstMacroID;
2562 if (Index == MacroOffsets.size())
2563 MacroOffsets.push_back(Stream.GetCurrentBitNo());
2564 else {
2565 if (Index > MacroOffsets.size())
2566 MacroOffsets.resize(Index + 1);
2567
2568 MacroOffsets[Index] = Stream.GetCurrentBitNo();
2569 }
2570
2571 AddIdentifierRef(Name, Record);
2572 AddSourceLocation(MI->getDefinitionLoc(), Record);
2573 AddSourceLocation(MI->getDefinitionEndLoc(), Record);
2574 Record.push_back(MI->isUsed());
2575 Record.push_back(MI->isUsedForHeaderGuard());
2576 unsigned Code;
2577 if (MI->isObjectLike()) {
2578 Code = PP_MACRO_OBJECT_LIKE;
2579 } else {
2580 Code = PP_MACRO_FUNCTION_LIKE;
2581
2582 Record.push_back(MI->isC99Varargs());
2583 Record.push_back(MI->isGNUVarargs());
2584 Record.push_back(MI->hasCommaPasting());
2585 Record.push_back(MI->getNumParams());
2586 for (const IdentifierInfo *Param : MI->params())
2587 AddIdentifierRef(Param, Record);
2588 }
2589
2590 // If we have a detailed preprocessing record, record the macro definition
2591 // ID that corresponds to this macro.
2592 if (PPRec)
2593 Record.push_back(MacroDefinitions[PPRec->findMacroDefinition(MI)]);
2594
2595 Stream.EmitRecord(Code, Record);
2596 Record.clear();
2597
2598 // Emit the tokens array.
2599 for (unsigned TokNo = 0, e = MI->getNumTokens(); TokNo != e; ++TokNo) {
2600 // Note that we know that the preprocessor does not have any annotation
2601 // tokens in it because they are created by the parser, and thus can't
2602 // be in a macro definition.
2603 const Token &Tok = MI->getReplacementToken(TokNo);
2604 AddToken(Tok, Record);
2605 Stream.EmitRecord(PP_TOKEN, Record);
2606 Record.clear();
2607 }
2608 ++NumMacros;
2609 }
2610
2611 Stream.ExitBlock();
2612
2613 // Write the offsets table for macro IDs.
2614 using namespace llvm;
2615
2616 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2617 Abbrev->Add(BitCodeAbbrevOp(MACRO_OFFSET));
2618 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of macros
2619 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
2620 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2621
2622 unsigned MacroOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2623 {
2624 RecordData::value_type Record[] = {MACRO_OFFSET, MacroOffsets.size(),
2625 FirstMacroID - NUM_PREDEF_MACRO_IDS};
2626 Stream.EmitRecordWithBlob(MacroOffsetAbbrev, Record, bytes(MacroOffsets));
2627 }
2628}
2629
2630void ASTWriter::WritePreprocessorDetail(PreprocessingRecord &PPRec) {
2631 if (PPRec.local_begin() == PPRec.local_end())
2632 return;
2633
2634 SmallVector<PPEntityOffset, 64> PreprocessedEntityOffsets;
2635
2636 // Enter the preprocessor block.
2637 Stream.EnterSubblock(PREPROCESSOR_DETAIL_BLOCK_ID, 3);
2638
2639 // If the preprocessor has a preprocessing record, emit it.
2640 unsigned NumPreprocessingRecords = 0;
2641 using namespace llvm;
2642
2643 // Set up the abbreviation for
2644 unsigned InclusionAbbrev = 0;
2645 {
2646 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2647 Abbrev->Add(BitCodeAbbrevOp(PPD_INCLUSION_DIRECTIVE));
2648 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // filename length
2649 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // in quotes
2650 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // kind
2651 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // imported module
2652 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2653 InclusionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2654 }
2655
2656 unsigned FirstPreprocessorEntityID
2657 = (Chain ? PPRec.getNumLoadedPreprocessedEntities() : 0)
2658 + NUM_PREDEF_PP_ENTITY_IDS;
2659 unsigned NextPreprocessorEntityID = FirstPreprocessorEntityID;
2660 RecordData Record;
2661 for (PreprocessingRecord::iterator E = PPRec.local_begin(),
2662 EEnd = PPRec.local_end();
2663 E != EEnd;
2664 (void)++E, ++NumPreprocessingRecords, ++NextPreprocessorEntityID) {
2665 Record.clear();
2666
2667 PreprocessedEntityOffsets.push_back(
2668 PPEntityOffset((*E)->getSourceRange(), Stream.GetCurrentBitNo()));
2669
2670 if (auto *MD = dyn_cast<MacroDefinitionRecord>(*E)) {
2671 // Record this macro definition's ID.
2672 MacroDefinitions[MD] = NextPreprocessorEntityID;
2673
2674 AddIdentifierRef(MD->getName(), Record);
2675 Stream.EmitRecord(PPD_MACRO_DEFINITION, Record);
2676 continue;
2677 }
2678
2679 if (auto *ME = dyn_cast<MacroExpansion>(*E)) {
2680 Record.push_back(ME->isBuiltinMacro());
2681 if (ME->isBuiltinMacro())
2682 AddIdentifierRef(ME->getName(), Record);
2683 else
2684 Record.push_back(MacroDefinitions[ME->getDefinition()]);
2685 Stream.EmitRecord(PPD_MACRO_EXPANSION, Record);
2686 continue;
2687 }
2688
2689 if (auto *ID = dyn_cast<InclusionDirective>(*E)) {
2690 Record.push_back(PPD_INCLUSION_DIRECTIVE);
2691 Record.push_back(ID->getFileName().size());
2692 Record.push_back(ID->wasInQuotes());
2693 Record.push_back(static_cast<unsigned>(ID->getKind()));
2694 Record.push_back(ID->importedModule());
2695 SmallString<64> Buffer;
2696 Buffer += ID->getFileName();
2697 // Check that the FileEntry is not null because it was not resolved and
2698 // we create a PCH even with compiler errors.
2699 if (ID->getFile())
2700 Buffer += ID->getFile()->getName();
2701 Stream.EmitRecordWithBlob(InclusionAbbrev, Record, Buffer);
2702 continue;
2703 }
2704
2705 llvm_unreachable("Unhandled PreprocessedEntity in ASTWriter")::llvm::llvm_unreachable_internal("Unhandled PreprocessedEntity in ASTWriter"
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2705)
;
2706 }
2707 Stream.ExitBlock();
2708
2709 // Write the offsets table for the preprocessing record.
2710 if (NumPreprocessingRecords > 0) {
2711 assert(PreprocessedEntityOffsets.size() == NumPreprocessingRecords)(static_cast <bool> (PreprocessedEntityOffsets.size() ==
NumPreprocessingRecords) ? void (0) : __assert_fail ("PreprocessedEntityOffsets.size() == NumPreprocessingRecords"
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2711, __extension__ __PRETTY_FUNCTION__))
;
2712
2713 // Write the offsets table for identifier IDs.
2714 using namespace llvm;
2715
2716 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2717 Abbrev->Add(BitCodeAbbrevOp(PPD_ENTITIES_OFFSETS));
2718 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first pp entity
2719 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2720 unsigned PPEOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2721
2722 RecordData::value_type Record[] = {PPD_ENTITIES_OFFSETS,
2723 FirstPreprocessorEntityID -
2724 NUM_PREDEF_PP_ENTITY_IDS};
2725 Stream.EmitRecordWithBlob(PPEOffsetAbbrev, Record,
2726 bytes(PreprocessedEntityOffsets));
2727 }
2728}
2729
2730unsigned ASTWriter::getLocalOrImportedSubmoduleID(Module *Mod) {
2731 if (!Mod)
2732 return 0;
2733
2734 llvm::DenseMap<Module *, unsigned>::iterator Known = SubmoduleIDs.find(Mod);
2735 if (Known != SubmoduleIDs.end())
2736 return Known->second;
2737
2738 auto *Top = Mod->getTopLevelModule();
2739 if (Top != WritingModule &&
2740 (getLangOpts().CompilingPCH ||
2741 !Top->fullModuleNameIs(StringRef(getLangOpts().CurrentModule))))
2742 return 0;
2743
2744 return SubmoduleIDs[Mod] = NextSubmoduleID++;
2745}
2746
2747unsigned ASTWriter::getSubmoduleID(Module *Mod) {
2748 // FIXME: This can easily happen, if we have a reference to a submodule that
2749 // did not result in us loading a module file for that submodule. For
2750 // instance, a cross-top-level-module 'conflict' declaration will hit this.
2751 unsigned ID = getLocalOrImportedSubmoduleID(Mod);
2752 assert((ID || !Mod) &&(static_cast <bool> ((ID || !Mod) && "asked for module ID for non-local, non-imported module"
) ? void (0) : __assert_fail ("(ID || !Mod) && \"asked for module ID for non-local, non-imported module\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2753, __extension__ __PRETTY_FUNCTION__))
2753 "asked for module ID for non-local, non-imported module")(static_cast <bool> ((ID || !Mod) && "asked for module ID for non-local, non-imported module"
) ? void (0) : __assert_fail ("(ID || !Mod) && \"asked for module ID for non-local, non-imported module\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2753, __extension__ __PRETTY_FUNCTION__))
;
2754 return ID;
2755}
2756
2757/// \brief Compute the number of modules within the given tree (including the
2758/// given module).
2759static unsigned getNumberOfModules(Module *Mod) {
2760 unsigned ChildModules = 0;
2761 for (auto Sub = Mod->submodule_begin(), SubEnd = Mod->submodule_end();
2762 Sub != SubEnd; ++Sub)
2763 ChildModules += getNumberOfModules(*Sub);
2764
2765 return ChildModules + 1;
2766}
2767
2768void ASTWriter::WriteSubmodules(Module *WritingModule) {
2769 // Enter the submodule description block.
2770 Stream.EnterSubblock(SUBMODULE_BLOCK_ID, /*bits for abbreviations*/5);
2771
2772 // Write the abbreviations needed for the submodules block.
2773 using namespace llvm;
2774
2775 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2776 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_DEFINITION));
2777 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
2778 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Parent
2779 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Kind
2780 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2781 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExplicit
2782 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsSystem
2783 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExternC
2784 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferSubmodules...
2785 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExplicit...
2786 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExportWild...
2787 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ConfigMacrosExh...
2788 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2789 unsigned DefinitionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2790
2791 Abbrev = std::make_shared<BitCodeAbbrev>();
2792 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_HEADER));
2793 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2794 unsigned UmbrellaAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2795
2796 Abbrev = std::make_shared<BitCodeAbbrev>();
2797 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_HEADER));
2798 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2799 unsigned HeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2800
2801 Abbrev = std::make_shared<BitCodeAbbrev>();
2802 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TOPHEADER));
2803 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2804 unsigned TopHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2805
2806 Abbrev = std::make_shared<BitCodeAbbrev>();
2807 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_DIR));
2808 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2809 unsigned UmbrellaDirAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2810
2811 Abbrev = std::make_shared<BitCodeAbbrev>();
2812 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_REQUIRES));
2813 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // State
2814 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Feature
2815 unsigned RequiresAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2816
2817 Abbrev = std::make_shared<BitCodeAbbrev>();
2818 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXCLUDED_HEADER));
2819 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2820 unsigned ExcludedHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2821
2822 Abbrev = std::make_shared<BitCodeAbbrev>();
2823 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TEXTUAL_HEADER));
2824 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2825 unsigned TextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2826
2827 Abbrev = std::make_shared<BitCodeAbbrev>();
2828 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_HEADER));
2829 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2830 unsigned PrivateHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2831
2832 Abbrev = std::make_shared<BitCodeAbbrev>();
2833 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_TEXTUAL_HEADER));
2834 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2835 unsigned PrivateTextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2836
2837 Abbrev = std::make_shared<BitCodeAbbrev>();
2838 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_LINK_LIBRARY));
2839 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2840 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2841 unsigned LinkLibraryAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2842
2843 Abbrev = std::make_shared<BitCodeAbbrev>();
2844 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFIG_MACRO));
2845 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2846 unsigned ConfigMacroAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2847
2848 Abbrev = std::make_shared<BitCodeAbbrev>();
2849 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFLICT));
2850 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Other module
2851 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Message
2852 unsigned ConflictAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2853
2854 Abbrev = std::make_shared<BitCodeAbbrev>();
2855 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXPORT_AS));
2856 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2857 unsigned ExportAsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2858
2859 // Write the submodule metadata block.
2860 RecordData::value_type Record[] = {
2861 getNumberOfModules(WritingModule),
2862 FirstSubmoduleID - NUM_PREDEF_SUBMODULE_IDS};
2863 Stream.EmitRecord(SUBMODULE_METADATA, Record);
2864
2865 // Write all of the submodules.
2866 std::queue<Module *> Q;
2867 Q.push(WritingModule);
2868 while (!Q.empty()) {
2869 Module *Mod = Q.front();
2870 Q.pop();
2871 unsigned ID = getSubmoduleID(Mod);
2872
2873 uint64_t ParentID = 0;
2874 if (Mod->Parent) {
2875 assert(SubmoduleIDs[Mod->Parent] && "Submodule parent not written?")(static_cast <bool> (SubmoduleIDs[Mod->Parent] &&
"Submodule parent not written?") ? void (0) : __assert_fail (
"SubmoduleIDs[Mod->Parent] && \"Submodule parent not written?\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2875, __extension__ __PRETTY_FUNCTION__))
;
2876 ParentID = SubmoduleIDs[Mod->Parent];
2877 }
2878
2879 // Emit the definition of the block.
2880 {
2881 RecordData::value_type Record[] = {SUBMODULE_DEFINITION,
2882 ID,
2883 ParentID,
2884 (RecordData::value_type)Mod->Kind,
2885 Mod->IsFramework,
2886 Mod->IsExplicit,
2887 Mod->IsSystem,
2888 Mod->IsExternC,
2889 Mod->InferSubmodules,
2890 Mod->InferExplicitSubmodules,
2891 Mod->InferExportWildcard,
2892 Mod->ConfigMacrosExhaustive};
2893 Stream.EmitRecordWithBlob(DefinitionAbbrev, Record, Mod->Name);
2894 }
2895
2896 // Emit the requirements.
2897 for (const auto &R : Mod->Requirements) {
2898 RecordData::value_type Record[] = {SUBMODULE_REQUIRES, R.second};
2899 Stream.EmitRecordWithBlob(RequiresAbbrev, Record, R.first);
2900 }
2901
2902 // Emit the umbrella header, if there is one.
2903 if (auto UmbrellaHeader = Mod->getUmbrellaHeader()) {
2904 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_HEADER};
2905 Stream.EmitRecordWithBlob(UmbrellaAbbrev, Record,
2906 UmbrellaHeader.NameAsWritten);
2907 } else if (auto UmbrellaDir = Mod->getUmbrellaDir()) {
2908 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_DIR};
2909 Stream.EmitRecordWithBlob(UmbrellaDirAbbrev, Record,
2910 UmbrellaDir.NameAsWritten);
2911 }
2912
2913 // Emit the headers.
2914 struct {
2915 unsigned RecordKind;
2916 unsigned Abbrev;
2917 Module::HeaderKind HeaderKind;
2918 } HeaderLists[] = {
2919 {SUBMODULE_HEADER, HeaderAbbrev, Module::HK_Normal},
2920 {SUBMODULE_TEXTUAL_HEADER, TextualHeaderAbbrev, Module::HK_Textual},
2921 {SUBMODULE_PRIVATE_HEADER, PrivateHeaderAbbrev, Module::HK_Private},
2922 {SUBMODULE_PRIVATE_TEXTUAL_HEADER, PrivateTextualHeaderAbbrev,
2923 Module::HK_PrivateTextual},
2924 {SUBMODULE_EXCLUDED_HEADER, ExcludedHeaderAbbrev, Module::HK_Excluded}
2925 };
2926 for (auto &HL : HeaderLists) {
2927 RecordData::value_type Record[] = {HL.RecordKind};
2928 for (auto &H : Mod->Headers[HL.HeaderKind])
2929 Stream.EmitRecordWithBlob(HL.Abbrev, Record, H.NameAsWritten);
2930 }
2931
2932 // Emit the top headers.
2933 {
2934 auto TopHeaders = Mod->getTopHeaders(PP->getFileManager());
2935 RecordData::value_type Record[] = {SUBMODULE_TOPHEADER};
2936 for (auto *H : TopHeaders)
2937 Stream.EmitRecordWithBlob(TopHeaderAbbrev, Record, H->getName());
2938 }
2939
2940 // Emit the imports.
2941 if (!Mod->Imports.empty()) {
2942 RecordData Record;
2943 for (auto *I : Mod->Imports)
2944 Record.push_back(getSubmoduleID(I));
2945 Stream.EmitRecord(SUBMODULE_IMPORTS, Record);
2946 }
2947
2948 // Emit the exports.
2949 if (!Mod->Exports.empty()) {
2950 RecordData Record;
2951 for (const auto &E : Mod->Exports) {
2952 // FIXME: This may fail; we don't require that all exported modules
2953 // are local or imported.
2954 Record.push_back(getSubmoduleID(E.getPointer()));
2955 Record.push_back(E.getInt());
2956 }
2957 Stream.EmitRecord(SUBMODULE_EXPORTS, Record);
2958 }
2959
2960 //FIXME: How do we emit the 'use'd modules? They may not be submodules.
2961 // Might be unnecessary as use declarations are only used to build the
2962 // module itself.
2963
2964 // Emit the link libraries.
2965 for (const auto &LL : Mod->LinkLibraries) {
2966 RecordData::value_type Record[] = {SUBMODULE_LINK_LIBRARY,
2967 LL.IsFramework};
2968 Stream.EmitRecordWithBlob(LinkLibraryAbbrev, Record, LL.Library);
2969 }
2970
2971 // Emit the conflicts.
2972 for (const auto &C : Mod->Conflicts) {
2973 // FIXME: This may fail; we don't require that all conflicting modules
2974 // are local or imported.
2975 RecordData::value_type Record[] = {SUBMODULE_CONFLICT,
2976 getSubmoduleID(C.Other)};
2977 Stream.EmitRecordWithBlob(ConflictAbbrev, Record, C.Message);
2978 }
2979
2980 // Emit the configuration macros.
2981 for (const auto &CM : Mod->ConfigMacros) {
2982 RecordData::value_type Record[] = {SUBMODULE_CONFIG_MACRO};
2983 Stream.EmitRecordWithBlob(ConfigMacroAbbrev, Record, CM);
2984 }
2985
2986 // Emit the initializers, if any.
2987 RecordData Inits;
2988 for (Decl *D : Context->getModuleInitializers(Mod))
2989 Inits.push_back(GetDeclRef(D));
2990 if (!Inits.empty())
2991 Stream.EmitRecord(SUBMODULE_INITIALIZERS, Inits);
2992
2993 // Emit the name of the re-exported module, if any.
2994 if (!Mod->ExportAsModule.empty()) {
2995 RecordData::value_type Record[] = {SUBMODULE_EXPORT_AS};
2996 Stream.EmitRecordWithBlob(ExportAsAbbrev, Record, Mod->ExportAsModule);
2997 }
2998
2999 // Queue up the submodules of this module.
3000 for (auto *M : Mod->submodules())
3001 Q.push(M);
3002 }
3003
3004 Stream.ExitBlock();
3005
3006 assert((NextSubmoduleID - FirstSubmoduleID ==(static_cast <bool> ((NextSubmoduleID - FirstSubmoduleID
== getNumberOfModules(WritingModule)) && "Wrong # of submodules; found a reference to a non-local, "
"non-imported submodule?") ? void (0) : __assert_fail ("(NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule)) && \"Wrong # of submodules; found a reference to a non-local, \" \"non-imported submodule?\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3009, __extension__ __PRETTY_FUNCTION__))
3007 getNumberOfModules(WritingModule)) &&(static_cast <bool> ((NextSubmoduleID - FirstSubmoduleID
== getNumberOfModules(WritingModule)) && "Wrong # of submodules; found a reference to a non-local, "
"non-imported submodule?") ? void (0) : __assert_fail ("(NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule)) && \"Wrong # of submodules; found a reference to a non-local, \" \"non-imported submodule?\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3009, __extension__ __PRETTY_FUNCTION__))
3008 "Wrong # of submodules; found a reference to a non-local, "(static_cast <bool> ((NextSubmoduleID - FirstSubmoduleID
== getNumberOfModules(WritingModule)) && "Wrong # of submodules; found a reference to a non-local, "
"non-imported submodule?") ? void (0) : __assert_fail ("(NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule)) && \"Wrong # of submodules; found a reference to a non-local, \" \"non-imported submodule?\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3009, __extension__ __PRETTY_FUNCTION__))
3009 "non-imported submodule?")(static_cast <bool> ((NextSubmoduleID - FirstSubmoduleID
== getNumberOfModules(WritingModule)) && "Wrong # of submodules; found a reference to a non-local, "
"non-imported submodule?") ? void (0) : __assert_fail ("(NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule)) && \"Wrong # of submodules; found a reference to a non-local, \" \"non-imported submodule?\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3009, __extension__ __PRETTY_FUNCTION__))
;
3010}
3011
3012void ASTWriter::WritePragmaDiagnosticMappings(const DiagnosticsEngine &Diag,
3013 bool isModule) {
3014 llvm::SmallDenseMap<const DiagnosticsEngine::DiagState *, unsigned, 64>
3015 DiagStateIDMap;
3016 unsigned CurrID = 0;
3017 RecordData Record;
3018
3019 auto EncodeDiagStateFlags =
3020 [](const DiagnosticsEngine::DiagState *DS) -> unsigned {
3021 unsigned Result = (unsigned)DS->ExtBehavior;
3022 for (unsigned Val :
3023 {(unsigned)DS->IgnoreAllWarnings, (unsigned)DS->EnableAllWarnings,
3024 (unsigned)DS->WarningsAsErrors, (unsigned)DS->ErrorsAsFatal,
3025 (unsigned)DS->SuppressSystemWarnings})
3026 Result = (Result << 1) | Val;
3027 return Result;
3028 };
3029
3030 unsigned Flags = EncodeDiagStateFlags(Diag.DiagStatesByLoc.FirstDiagState);
3031 Record.push_back(Flags);
3032
3033 auto AddDiagState = [&](const DiagnosticsEngine::DiagState *State,
3034 bool IncludeNonPragmaStates) {
3035 // Ensure that the diagnostic state wasn't modified since it was created.
3036 // We will not correctly round-trip this information otherwise.
3037 assert(Flags == EncodeDiagStateFlags(State) &&(static_cast <bool> (Flags == EncodeDiagStateFlags(State
) && "diag state flags vary in single AST file") ? void
(0) : __assert_fail ("Flags == EncodeDiagStateFlags(State) && \"diag state flags vary in single AST file\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3038, __extension__ __PRETTY_FUNCTION__))
3038 "diag state flags vary in single AST file")(static_cast <bool> (Flags == EncodeDiagStateFlags(State
) && "diag state flags vary in single AST file") ? void
(0) : __assert_fail ("Flags == EncodeDiagStateFlags(State) && \"diag state flags vary in single AST file\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3038, __extension__ __PRETTY_FUNCTION__))
;
3039
3040 unsigned &DiagStateID = DiagStateIDMap[State];
3041 Record.push_back(DiagStateID);
3042
3043 if (DiagStateID == 0) {
3044 DiagStateID = ++CurrID;
3045
3046 // Add a placeholder for the number of mappings.
3047 auto SizeIdx = Record.size();
3048 Record.emplace_back();
3049 for (const auto &I : *State) {
3050 if (I.second.isPragma() || IncludeNonPragmaStates) {
3051 Record.push_back(I.first);
3052 Record.push_back(I.second.serialize());
3053 }
3054 }
3055 // Update the placeholder.
3056 Record[SizeIdx] = (Record.size() - SizeIdx) / 2;
3057 }
3058 };
3059
3060 AddDiagState(Diag.DiagStatesByLoc.FirstDiagState, isModule);
3061
3062 // Reserve a spot for the number of locations with state transitions.
3063 auto NumLocationsIdx = Record.size();
3064 Record.emplace_back();
3065
3066 // Emit the state transitions.
3067 unsigned NumLocations = 0;
3068 for (auto &FileIDAndFile : Diag.DiagStatesByLoc.Files) {
3069 if (!FileIDAndFile.first.isValid() ||
3070 !FileIDAndFile.second.HasLocalTransitions)
3071 continue;
3072 ++NumLocations;
3073 AddSourceLocation(Diag.SourceMgr->getLocForStartOfFile(FileIDAndFile.first),
3074 Record);
3075 Record.push_back(FileIDAndFile.second.StateTransitions.size());
3076 for (auto &StatePoint : FileIDAndFile.second.StateTransitions) {
3077 Record.push_back(StatePoint.Offset);
3078 AddDiagState(StatePoint.State, false);
3079 }
3080 }
3081
3082 // Backpatch the number of locations.
3083 Record[NumLocationsIdx] = NumLocations;
3084
3085 // Emit CurDiagStateLoc. Do it last in order to match source order.
3086 //
3087 // This also protects against a hypothetical corner case with simulating
3088 // -Werror settings for implicit modules in the ASTReader, where reading
3089 // CurDiagState out of context could change whether warning pragmas are
3090 // treated as errors.
3091 AddSourceLocation(Diag.DiagStatesByLoc.CurDiagStateLoc, Record);
3092 AddDiagState(Diag.DiagStatesByLoc.CurDiagState, false);
3093
3094 Stream.EmitRecord(DIAG_PRAGMA_MAPPINGS, Record);
3095}
3096
3097//===----------------------------------------------------------------------===//
3098// Type Serialization
3099//===----------------------------------------------------------------------===//
3100
3101/// \brief Write the representation of a type to the AST stream.
3102void ASTWriter::WriteType(QualType T) {
3103 TypeIdx &IdxRef = TypeIdxs[T];
3104 if (IdxRef.getIndex() == 0) // we haven't seen this type before.
3105 IdxRef = TypeIdx(NextTypeID++);
3106 TypeIdx Idx = IdxRef;
3107
3108 assert(Idx.getIndex() >= FirstTypeID && "Re-writing a type from a prior AST")(static_cast <bool> (Idx.getIndex() >= FirstTypeID &&
"Re-writing a type from a prior AST") ? void (0) : __assert_fail
("Idx.getIndex() >= FirstTypeID && \"Re-writing a type from a prior AST\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3108, __extension__ __PRETTY_FUNCTION__))
;
3109
3110 RecordData Record;
3111
3112 // Emit the type's representation.
3113 ASTTypeWriter W(*this, Record);
3114 W.Visit(T);
3115 uint64_t Offset = W.Emit();
3116
3117 // Record the offset for this type.
3118 unsigned Index = Idx.getIndex() - FirstTypeID;
3119 if (TypeOffsets.size() == Index)
3120 TypeOffsets.push_back(Offset);
3121 else if (TypeOffsets.size() < Index) {
3122 TypeOffsets.resize(Index + 1);
3123 TypeOffsets[Index] = Offset;
3124 } else {
3125 llvm_unreachable("Types emitted in wrong order")::llvm::llvm_unreachable_internal("Types emitted in wrong order"
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3125)
;
3126 }
3127}
3128
3129//===----------------------------------------------------------------------===//
3130// Declaration Serialization
3131//===----------------------------------------------------------------------===//
3132
3133/// \brief Write the block containing all of the declaration IDs
3134/// lexically declared within the given DeclContext.
3135///
3136/// \returns the offset of the DECL_CONTEXT_LEXICAL block within the
3137/// bistream, or 0 if no block was written.
3138uint64_t ASTWriter::WriteDeclContextLexicalBlock(ASTContext &Context,
3139 DeclContext *DC) {
3140 if (DC->decls_empty())
3141 return 0;
3142
3143 uint64_t Offset = Stream.GetCurrentBitNo();
3144 SmallVector<uint32_t, 128> KindDeclPairs;
3145 for (const auto *D : DC->decls()) {
3146 KindDeclPairs.push_back(D->getKind());
3147 KindDeclPairs.push_back(GetDeclRef(D));
3148 }
3149
3150 ++NumLexicalDeclContexts;
3151 RecordData::value_type Record[] = {DECL_CONTEXT_LEXICAL};
3152 Stream.EmitRecordWithBlob(DeclContextLexicalAbbrev, Record,
3153 bytes(KindDeclPairs));
3154 return Offset;
3155}
3156
3157void ASTWriter::WriteTypeDeclOffsets() {
3158 using namespace llvm;
3159
3160 // Write the type offsets array
3161 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3162 Abbrev->Add(BitCodeAbbrevOp(TYPE_OFFSET));
3163 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of types
3164 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base type index
3165 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // types block
3166 unsigned TypeOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3167 {
3168 RecordData::value_type Record[] = {TYPE_OFFSET, TypeOffsets.size(),
3169 FirstTypeID - NUM_PREDEF_TYPE_IDS};
3170 Stream.EmitRecordWithBlob(TypeOffsetAbbrev, Record, bytes(TypeOffsets));
3171 }
3172
3173 // Write the declaration offsets array
3174 Abbrev = std::make_shared<BitCodeAbbrev>();
3175 Abbrev->Add(BitCodeAbbrevOp(DECL_OFFSET));
3176 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of declarations
3177 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base decl ID
3178 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // declarations block
3179 unsigned DeclOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3180 {
3181 RecordData::value_type Record[] = {DECL_OFFSET, DeclOffsets.size(),
3182 FirstDeclID - NUM_PREDEF_DECL_IDS};
3183 Stream.EmitRecordWithBlob(DeclOffsetAbbrev, Record, bytes(DeclOffsets));
3184 }
3185}
3186
3187void ASTWriter::WriteFileDeclIDsMap() {
3188 using namespace llvm;
3189
3190 SmallVector<std::pair<FileID, DeclIDInFileInfo *>, 64> SortedFileDeclIDs(
3191 FileDeclIDs.begin(), FileDeclIDs.end());
3192 std::sort(SortedFileDeclIDs.begin(), SortedFileDeclIDs.end(),
3193 llvm::less_first());
3194
3195 // Join the vectors of DeclIDs from all files.
3196 SmallVector<DeclID, 256> FileGroupedDeclIDs;
3197 for (auto &FileDeclEntry : SortedFileDeclIDs) {
3198 DeclIDInFileInfo &Info = *FileDeclEntry.second;
3199 Info.FirstDeclIndex = FileGroupedDeclIDs.size();
3200 for (auto &LocDeclEntry : Info.DeclIDs)
3201 FileGroupedDeclIDs.push_back(LocDeclEntry.second);
3202 }
3203
3204 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3205 Abbrev->Add(BitCodeAbbrevOp(FILE_SORTED_DECLS));
3206 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3207 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3208 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
3209 RecordData::value_type Record[] = {FILE_SORTED_DECLS,
3210 FileGroupedDeclIDs.size()};
3211 Stream.EmitRecordWithBlob(AbbrevCode, Record, bytes(FileGroupedDeclIDs));
3212}
3213
3214void ASTWriter::WriteComments() {
3215 Stream.EnterSubblock(COMMENTS_BLOCK_ID, 3);
3216 ArrayRef<RawComment *> RawComments = Context->Comments.getComments();
3217 RecordData Record;
3218 for (const auto *I : RawComments) {
3219 Record.clear();
3220 AddSourceRange(I->getSourceRange(), Record);
3221 Record.push_back(I->getKind());
3222 Record.push_back(I->isTrailingComment());
3223 Record.push_back(I->isAlmostTrailingComment());
3224 Stream.EmitRecord(COMMENTS_RAW_COMMENT, Record);
3225 }
3226 Stream.ExitBlock();
3227}
3228
3229//===----------------------------------------------------------------------===//
3230// Global Method Pool and Selector Serialization
3231//===----------------------------------------------------------------------===//
3232
3233namespace {
3234
3235// Trait used for the on-disk hash table used in the method pool.
3236class ASTMethodPoolTrait {
3237 ASTWriter &Writer;
3238
3239public:
3240 using key_type = Selector;
3241 using key_type_ref = key_type;
3242
3243 struct data_type {
3244 SelectorID ID;
3245 ObjCMethodList Instance, Factory;
3246 };
3247 using data_type_ref = const data_type &;
3248
3249 using hash_value_type = unsigned;
3250 using offset_type = unsigned;
3251
3252 explicit ASTMethodPoolTrait(ASTWriter &Writer) : Writer(Writer) {}
3253
3254 static hash_value_type ComputeHash(Selector Sel) {
3255 return serialization::ComputeHash(Sel);
3256 }
3257
3258 std::pair<unsigned, unsigned>
3259 EmitKeyDataLength(raw_ostream& Out, Selector Sel,
3260 data_type_ref Methods) {
3261 using namespace llvm::support;
3262
3263 endian::Writer<little> LE(Out);
3264 unsigned KeyLen = 2 + (Sel.getNumArgs()? Sel.getNumArgs() * 4 : 4);
3265 LE.write<uint16_t>(KeyLen);
3266 unsigned DataLen = 4 + 2 + 2; // 2 bytes for each of the method counts
3267 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3268 Method = Method->getNext())
3269 if (Method->getMethod())
3270 DataLen += 4;
3271 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3272 Method = Method->getNext())
3273 if (Method->getMethod())
3274 DataLen += 4;
3275 LE.write<uint16_t>(DataLen);
3276 return std::make_pair(KeyLen, DataLen);
3277 }
3278
3279 void EmitKey(raw_ostream& Out, Selector Sel, unsigned) {
3280 using namespace llvm::support;
3281
3282 endian::Writer<little> LE(Out);
3283 uint64_t Start = Out.tell();
3284 assert((Start >> 32) == 0 && "Selector key offset too large")(static_cast <bool> ((Start >> 32) == 0 &&
"Selector key offset too large") ? void (0) : __assert_fail (
"(Start >> 32) == 0 && \"Selector key offset too large\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3284, __extension__ __PRETTY_FUNCTION__))
;
3285 Writer.SetSelectorOffset(Sel, Start);
3286 unsigned N = Sel.getNumArgs();
3287 LE.write<uint16_t>(N);
3288 if (N == 0)
3289 N = 1;
3290 for (unsigned I = 0; I != N; ++I)
3291 LE.write<uint32_t>(
3292 Writer.getIdentifierRef(Sel.getIdentifierInfoForSlot(I)));
3293 }
3294
3295 void EmitData(raw_ostream& Out, key_type_ref,
3296 data_type_ref Methods, unsigned DataLen) {
3297 using namespace llvm::support;
3298
3299 endian::Writer<little> LE(Out);
3300 uint64_t Start = Out.tell(); (void)Start;
3301 LE.write<uint32_t>(Methods.ID);
3302 unsigned NumInstanceMethods = 0;
3303 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3304 Method = Method->getNext())
3305 if (Method->getMethod())
3306 ++NumInstanceMethods;
3307
3308 unsigned NumFactoryMethods = 0;
3309 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3310 Method = Method->getNext())
3311 if (Method->getMethod())
3312 ++NumFactoryMethods;
3313
3314 unsigned InstanceBits = Methods.Instance.getBits();
3315 assert(InstanceBits < 4)(static_cast <bool> (InstanceBits < 4) ? void (0) : __assert_fail
("InstanceBits < 4", "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3315, __extension__ __PRETTY_FUNCTION__))
;
3316 unsigned InstanceHasMoreThanOneDeclBit =
3317 Methods.Instance.hasMoreThanOneDecl();
3318 unsigned FullInstanceBits = (NumInstanceMethods << 3) |
3319 (InstanceHasMoreThanOneDeclBit << 2) |
3320 InstanceBits;
3321 unsigned FactoryBits = Methods.Factory.getBits();
3322 assert(FactoryBits < 4)(static_cast <bool> (FactoryBits < 4) ? void (0) : __assert_fail
("FactoryBits < 4", "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3322, __extension__ __PRETTY_FUNCTION__))
;
3323 unsigned FactoryHasMoreThanOneDeclBit =
3324 Methods.Factory.hasMoreThanOneDecl();
3325 unsigned FullFactoryBits = (NumFactoryMethods << 3) |
3326 (FactoryHasMoreThanOneDeclBit << 2) |
3327 FactoryBits;
3328 LE.write<uint16_t>(FullInstanceBits);
3329 LE.write<uint16_t>(FullFactoryBits);
3330 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3331 Method = Method->getNext())
3332 if (Method->getMethod())
3333 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3334 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3335 Method = Method->getNext())
3336 if (Method->getMethod())
3337 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3338
3339 assert(Out.tell() - Start == DataLen && "Data length is wrong")(static_cast <bool> (Out.tell() - Start == DataLen &&
"Data length is wrong") ? void (0) : __assert_fail ("Out.tell() - Start == DataLen && \"Data length is wrong\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3339, __extension__ __PRETTY_FUNCTION__))
;
3340 }
3341};
3342
3343} // namespace
3344
3345/// \brief Write ObjC data: selectors and the method pool.
3346///
3347/// The method pool contains both instance and factory methods, stored
3348/// in an on-disk hash table indexed by the selector. The hash table also
3349/// contains an empty entry for every other selector known to Sema.
3350void ASTWriter::WriteSelectors(Sema &SemaRef) {
3351 using namespace llvm;
3352
3353 // Do we have to do anything at all?
3354 if (SemaRef.MethodPool.empty() && SelectorIDs.empty())
3355 return;
3356 unsigned NumTableEntries = 0;
3357 // Create and write out the blob that contains selectors and the method pool.
3358 {
3359 llvm::OnDiskChainedHashTableGenerator<ASTMethodPoolTrait> Generator;
3360 ASTMethodPoolTrait Trait(*this);
3361
3362 // Create the on-disk hash table representation. We walk through every
3363 // selector we've seen and look it up in the method pool.
3364 SelectorOffsets.resize(NextSelectorID - FirstSelectorID);
3365 for (auto &SelectorAndID : SelectorIDs) {
3366 Selector S = SelectorAndID.first;
3367 SelectorID ID = SelectorAndID.second;
3368 Sema::GlobalMethodPool::iterator F = SemaRef.MethodPool.find(S);
3369 ASTMethodPoolTrait::data_type Data = {
3370 ID,
3371 ObjCMethodList(),
3372 ObjCMethodList()
3373 };
3374 if (F != SemaRef.MethodPool.end()) {
3375 Data.Instance = F->second.first;
3376 Data.Factory = F->second.second;
3377 }
3378 // Only write this selector if it's not in an existing AST or something
3379 // changed.
3380 if (Chain && ID < FirstSelectorID) {
3381 // Selector already exists. Did it change?
3382 bool changed = false;
3383 for (ObjCMethodList *M = &Data.Instance;
3384 !changed && M && M->getMethod(); M = M->getNext()) {
3385 if (!M->getMethod()->isFromASTFile())
3386 changed = true;
3387 }
3388 for (ObjCMethodList *M = &Data.Factory; !changed && M && M->getMethod();
3389 M = M->getNext()) {
3390 if (!M->getMethod()->isFromASTFile())
3391 changed = true;
3392 }
3393 if (!changed)
3394 continue;
3395 } else if (Data.Instance.getMethod() || Data.Factory.getMethod()) {
3396 // A new method pool entry.
3397 ++NumTableEntries;
3398 }
3399 Generator.insert(S, Data, Trait);
3400 }
3401
3402 // Create the on-disk hash table in a buffer.
3403 SmallString<4096> MethodPool;
3404 uint32_t BucketOffset;
3405 {
3406 using namespace llvm::support;
3407
3408 ASTMethodPoolTrait Trait(*this);
3409 llvm::raw_svector_ostream Out(MethodPool);
3410 // Make sure that no bucket is at offset 0
3411 endian::Writer<little>(Out).write<uint32_t>(0);
3412 BucketOffset = Generator.Emit(Out, Trait);
3413 }
3414
3415 // Create a blob abbreviation
3416 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3417 Abbrev->Add(BitCodeAbbrevOp(METHOD_POOL));
3418 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3419 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3420 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3421 unsigned MethodPoolAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3422
3423 // Write the method pool
3424 {
3425 RecordData::value_type Record[] = {METHOD_POOL, BucketOffset,
3426 NumTableEntries};
3427 Stream.EmitRecordWithBlob(MethodPoolAbbrev, Record, MethodPool);
3428 }
3429
3430 // Create a blob abbreviation for the selector table offsets.
3431 Abbrev = std::make_shared<BitCodeAbbrev>();
3432 Abbrev->Add(BitCodeAbbrevOp(SELECTOR_OFFSETS));
3433 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size
3434 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3435 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3436 unsigned SelectorOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3437
3438 // Write the selector offsets table.
3439 {
3440 RecordData::value_type Record[] = {
3441 SELECTOR_OFFSETS, SelectorOffsets.size(),
3442 FirstSelectorID - NUM_PREDEF_SELECTOR_IDS};
3443 Stream.EmitRecordWithBlob(SelectorOffsetAbbrev, Record,
3444 bytes(SelectorOffsets));
3445 }
3446 }
3447}
3448
3449/// \brief Write the selectors referenced in @selector expression into AST file.
3450void ASTWriter::WriteReferencedSelectorsPool(Sema &SemaRef) {
3451 using namespace llvm;
3452
3453 if (SemaRef.ReferencedSelectors.empty())
3454 return;
3455
3456 RecordData Record;
3457 ASTRecordWriter Writer(*this, Record);
3458
3459 // Note: this writes out all references even for a dependent AST. But it is
3460 // very tricky to fix, and given that @selector shouldn't really appear in
3461 // headers, probably not worth it. It's not a correctness issue.
3462 for (auto &SelectorAndLocation : SemaRef.ReferencedSelectors) {
3463 Selector Sel = SelectorAndLocation.first;
3464 SourceLocation Loc = SelectorAndLocation.second;
3465 Writer.AddSelectorRef(Sel);
3466 Writer.AddSourceLocation(Loc);
3467 }
3468 Writer.Emit(REFERENCED_SELECTOR_POOL);
3469}
3470
3471//===----------------------------------------------------------------------===//
3472// Identifier Table Serialization
3473//===----------------------------------------------------------------------===//
3474
3475/// Determine the declaration that should be put into the name lookup table to
3476/// represent the given declaration in this module. This is usually D itself,
3477/// but if D was imported and merged into a local declaration, we want the most
3478/// recent local declaration instead. The chosen declaration will be the most
3479/// recent declaration in any module that imports this one.
3480static NamedDecl *getDeclForLocalLookup(const LangOptions &LangOpts,
3481 NamedDecl *D) {
3482 if (!LangOpts.Modules || !D->isFromASTFile())
3483 return D;
3484
3485 if (Decl *Redecl = D->getPreviousDecl()) {
3486 // For Redeclarable decls, a prior declaration might be local.
3487 for (; Redecl; Redecl = Redecl->getPreviousDecl()) {
3488 // If we find a local decl, we're done.
3489 if (!Redecl->isFromASTFile()) {
3490 // Exception: in very rare cases (for injected-class-names), not all
3491 // redeclarations are in the same semantic context. Skip ones in a
3492 // different context. They don't go in this lookup table at all.
3493 if (!Redecl->getDeclContext()->getRedeclContext()->Equals(
3494 D->getDeclContext()->getRedeclContext()))
3495 continue;
3496 return cast<NamedDecl>(Redecl);
3497 }
3498
3499 // If we find a decl from a (chained-)PCH stop since we won't find a
3500 // local one.
3501 if (Redecl->getOwningModuleID() == 0)
3502 break;
3503 }
3504 } else if (Decl *First = D->getCanonicalDecl()) {
3505 // For Mergeable decls, the first decl might be local.
3506 if (!First->isFromASTFile())
3507 return cast<NamedDecl>(First);
3508 }
3509
3510 // All declarations are imported. Our most recent declaration will also be
3511 // the most recent one in anyone who imports us.
3512 return D;
3513}
3514
3515namespace {
3516
3517class ASTIdentifierTableTrait {
3518 ASTWriter &Writer;
3519 Preprocessor &PP;
3520 IdentifierResolver &IdResolver;
3521 bool IsModule;
3522 bool NeedDecls;
3523 ASTWriter::RecordData *InterestingIdentifierOffsets;
3524
3525 /// \brief Determines whether this is an "interesting" identifier that needs a
3526 /// full IdentifierInfo structure written into the hash table. Notably, this
3527 /// doesn't check whether the name has macros defined; use PublicMacroIterator
3528 /// to check that.
3529 bool isInterestingIdentifier(const IdentifierInfo *II, uint64_t MacroOffset) {
3530 if (MacroOffset ||
3531 II->isPoisoned() ||
3532 (IsModule ? II->hasRevertedBuiltin() : II->getObjCOrBuiltinID()) ||
3533 II->hasRevertedTokenIDToIdentifier() ||
3534 (NeedDecls && II->getFETokenInfo<void>()))
3535 return true;
3536
3537 return false;
3538 }
3539
3540public:
3541 using key_type = IdentifierInfo *;
3542 using key_type_ref = key_type;
3543
3544 using data_type = IdentID;
3545 using data_type_ref = data_type;
3546
3547 using hash_value_type = unsigned;
3548 using offset_type = unsigned;
3549
3550 ASTIdentifierTableTrait(ASTWriter &Writer, Preprocessor &PP,
3551 IdentifierResolver &IdResolver, bool IsModule,
3552 ASTWriter::RecordData *InterestingIdentifierOffsets)
3553 : Writer(Writer), PP(PP), IdResolver(IdResolver), IsModule(IsModule),
3554 NeedDecls(!IsModule || !Writer.getLangOpts().CPlusPlus),
3555 InterestingIdentifierOffsets(InterestingIdentifierOffsets) {}
3556
3557 bool needDecls() const { return NeedDecls; }
3558
3559 static hash_value_type ComputeHash(const IdentifierInfo* II) {
3560 return llvm::HashString(II->getName());
3561 }
3562
3563 bool isInterestingIdentifier(const IdentifierInfo *II) {
3564 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3565 return isInterestingIdentifier(II, MacroOffset);
3566 }
3567
3568 bool isInterestingNonMacroIdentifier(const IdentifierInfo *II) {
3569 return isInterestingIdentifier(II, 0);
3570 }
3571
3572 std::pair<unsigned, unsigned>
3573 EmitKeyDataLength(raw_ostream& Out, IdentifierInfo* II, IdentID ID) {
3574 unsigned KeyLen = II->getLength() + 1;
3575 unsigned DataLen = 4; // 4 bytes for the persistent ID << 1
3576 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3577 if (isInterestingIdentifier(II, MacroOffset)) {
3578 DataLen += 2; // 2 bytes for builtin ID
3579 DataLen += 2; // 2 bytes for flags
3580 if (MacroOffset)
3581 DataLen += 4; // MacroDirectives offset.
3582
3583 if (NeedDecls) {
3584 for (IdentifierResolver::iterator D = IdResolver.begin(II),
3585 DEnd = IdResolver.end();
3586 D != DEnd; ++D)
3587 DataLen += 4;
3588 }
3589 }
3590
3591 using namespace llvm::support;
3592
3593 endian::Writer<little> LE(Out);
3594
3595 assert((uint16_t)DataLen == DataLen && (uint16_t)KeyLen == KeyLen)(static_cast <bool> ((uint16_t)DataLen == DataLen &&
(uint16_t)KeyLen == KeyLen) ? void (0) : __assert_fail ("(uint16_t)DataLen == DataLen && (uint16_t)KeyLen == KeyLen"
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3595, __extension__ __PRETTY_FUNCTION__))
;
3596 LE.write<uint16_t>(DataLen);
3597 // We emit the key length after the data length so that every
3598 // string is preceded by a 16-bit length. This matches the PTH
3599 // format for storing identifiers.
3600 LE.write<uint16_t>(KeyLen);
3601 return std::make_pair(KeyLen, DataLen);
3602 }
3603
3604 void EmitKey(raw_ostream& Out, const IdentifierInfo* II,
3605 unsigned KeyLen) {
3606 // Record the location of the key data. This is used when generating
3607 // the mapping from persistent IDs to strings.
3608 Writer.SetIdentifierOffset(II, Out.tell());
3609
3610 // Emit the offset of the key/data length information to the interesting
3611 // identifiers table if necessary.
3612 if (InterestingIdentifierOffsets && isInterestingIdentifier(II))
3613 InterestingIdentifierOffsets->push_back(Out.tell() - 4);
3614
3615 Out.write(II->getNameStart(), KeyLen);
3616 }
3617
3618 void EmitData(raw_ostream& Out, IdentifierInfo* II,
3619 IdentID ID, unsigned) {
3620 using namespace llvm::support;
3621
3622 endian::Writer<little> LE(Out);
3623
3624 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3625 if (!isInterestingIdentifier(II, MacroOffset)) {
3626 LE.write<uint32_t>(ID << 1);
3627 return;
3628 }
3629
3630 LE.write<uint32_t>((ID << 1) | 0x01);
3631 uint32_t Bits = (uint32_t)II->getObjCOrBuiltinID();
3632 assert((Bits & 0xffff) == Bits && "ObjCOrBuiltinID too big for ASTReader.")(static_cast <bool> ((Bits & 0xffff) == Bits &&
"ObjCOrBuiltinID too big for ASTReader.") ? void (0) : __assert_fail
("(Bits & 0xffff) == Bits && \"ObjCOrBuiltinID too big for ASTReader.\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3632, __extension__ __PRETTY_FUNCTION__))
;
3633 LE.write<uint16_t>(Bits);
3634 Bits = 0;
3635 bool HadMacroDefinition = MacroOffset != 0;
3636 Bits = (Bits << 1) | unsigned(HadMacroDefinition);
3637 Bits = (Bits << 1) | unsigned(II->isExtensionToken());
3638 Bits = (Bits << 1) | unsigned(II->isPoisoned());
3639 Bits = (Bits << 1) | unsigned(II->hasRevertedBuiltin());
3640 Bits = (Bits << 1) | unsigned(II->hasRevertedTokenIDToIdentifier());
3641 Bits = (Bits << 1) | unsigned(II->isCPlusPlusOperatorKeyword());
3642 LE.write<uint16_t>(Bits);
3643
3644 if (HadMacroDefinition)
3645 LE.write<uint32_t>(MacroOffset);
3646
3647 if (NeedDecls) {
3648 // Emit the declaration IDs in reverse order, because the
3649 // IdentifierResolver provides the declarations as they would be
3650 // visible (e.g., the function "stat" would come before the struct
3651 // "stat"), but the ASTReader adds declarations to the end of the list
3652 // (so we need to see the struct "stat" before the function "stat").
3653 // Only emit declarations that aren't from a chained PCH, though.
3654 SmallVector<NamedDecl *, 16> Decls(IdResolver.begin(II),
3655 IdResolver.end());
3656 for (SmallVectorImpl<NamedDecl *>::reverse_iterator D = Decls.rbegin(),
3657 DEnd = Decls.rend();
3658 D != DEnd; ++D)
3659 LE.write<uint32_t>(
3660 Writer.getDeclID(getDeclForLocalLookup(PP.getLangOpts(), *D)));
3661 }
3662 }
3663};
3664
3665} // namespace
3666
3667/// \brief Write the identifier table into the AST file.
3668///
3669/// The identifier table consists of a blob containing string data
3670/// (the actual identifiers themselves) and a separate "offsets" index
3671/// that maps identifier IDs to locations within the blob.
3672void ASTWriter::WriteIdentifierTable(Preprocessor &PP,
3673 IdentifierResolver &IdResolver,
3674 bool IsModule) {
3675 using namespace llvm;
3676
3677 RecordData InterestingIdents;
3678
3679 // Create and write out the blob that contains the identifier
3680 // strings.
3681 {
3682 llvm::OnDiskChainedHashTableGenerator<ASTIdentifierTableTrait> Generator;
3683 ASTIdentifierTableTrait Trait(
3684 *this, PP, IdResolver, IsModule,
3685 (getLangOpts().CPlusPlus && IsModule) ? &InterestingIdents : nullptr);
3686
3687 // Look for any identifiers that were named while processing the
3688 // headers, but are otherwise not needed. We add these to the hash
3689 // table to enable checking of the predefines buffer in the case
3690 // where the user adds new macro definitions when building the AST
3691 // file.
3692 SmallVector<const IdentifierInfo *, 128> IIs;
3693 for (const auto &ID : PP.getIdentifierTable())
3694 IIs.push_back(ID.second);
3695 // Sort the identifiers lexicographically before getting them references so
3696 // that their order is stable.
3697 std::sort(IIs.begin(), IIs.end(), llvm::less_ptr<IdentifierInfo>());
3698 for (const IdentifierInfo *II : IIs)
3699 if (Trait.isInterestingNonMacroIdentifier(II))
3700 getIdentifierRef(II);
3701
3702 // Create the on-disk hash table representation. We only store offsets
3703 // for identifiers that appear here for the first time.
3704 IdentifierOffsets.resize(NextIdentID - FirstIdentID);
3705 for (auto IdentIDPair : IdentifierIDs) {
3706 auto *II = const_cast<IdentifierInfo *>(IdentIDPair.first);
3707 IdentID ID = IdentIDPair.second;
3708 assert(II && "NULL identifier in identifier table")(static_cast <bool> (II && "NULL identifier in identifier table"
) ? void (0) : __assert_fail ("II && \"NULL identifier in identifier table\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3708, __extension__ __PRETTY_FUNCTION__))
;
3709 // Write out identifiers if either the ID is local or the identifier has
3710 // changed since it was loaded.
3711 if (ID >= FirstIdentID || !Chain || !II->isFromAST()
3712 || II->hasChangedSinceDeserialization() ||
3713 (Trait.needDecls() &&
3714 II->hasFETokenInfoChangedSinceDeserialization()))
3715 Generator.insert(II, ID, Trait);
3716 }
3717
3718 // Create the on-disk hash table in a buffer.
3719 SmallString<4096> IdentifierTable;
3720 uint32_t BucketOffset;
3721 {
3722 using namespace llvm::support;
3723
3724 llvm::raw_svector_ostream Out(IdentifierTable);
3725 // Make sure that no bucket is at offset 0
3726 endian::Writer<little>(Out).write<uint32_t>(0);
3727 BucketOffset = Generator.Emit(Out, Trait);
3728 }
3729
3730 // Create a blob abbreviation
3731 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3732 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_TABLE));
3733 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3734 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3735 unsigned IDTableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3736
3737 // Write the identifier table
3738 RecordData::value_type Record[] = {IDENTIFIER_TABLE, BucketOffset};
3739 Stream.EmitRecordWithBlob(IDTableAbbrev, Record, IdentifierTable);
3740 }
3741
3742 // Write the offsets table for identifier IDs.
3743 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3744 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_OFFSET));
3745 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of identifiers
3746 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3747 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3748 unsigned IdentifierOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3749
3750#ifndef NDEBUG
3751 for (unsigned I = 0, N = IdentifierOffsets.size(); I != N; ++I)
3752 assert(IdentifierOffsets[I] && "Missing identifier offset?")(static_cast <bool> (IdentifierOffsets[I] && "Missing identifier offset?"
) ? void (0) : __assert_fail ("IdentifierOffsets[I] && \"Missing identifier offset?\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3752, __extension__ __PRETTY_FUNCTION__))
;
3753#endif
3754
3755 RecordData::value_type Record[] = {IDENTIFIER_OFFSET,
3756 IdentifierOffsets.size(),
3757 FirstIdentID - NUM_PREDEF_IDENT_IDS};
3758 Stream.EmitRecordWithBlob(IdentifierOffsetAbbrev, Record,
3759 bytes(IdentifierOffsets));
3760
3761 // In C++, write the list of interesting identifiers (those that are
3762 // defined as macros, poisoned, or similar unusual things).
3763 if (!InterestingIdents.empty())
3764 Stream.EmitRecord(INTERESTING_IDENTIFIERS, InterestingIdents);
3765}
3766
3767//===----------------------------------------------------------------------===//
3768// DeclContext's Name Lookup Table Serialization
3769//===----------------------------------------------------------------------===//
3770
3771namespace {
3772
3773// Trait used for the on-disk hash table used in the method pool.
3774class ASTDeclContextNameLookupTrait {
3775 ASTWriter &Writer;
3776 llvm::SmallVector<DeclID, 64> DeclIDs;
3777
3778public:
3779 using key_type = DeclarationNameKey;
3780 using key_type_ref = key_type;
3781
3782 /// A start and end index into DeclIDs, representing a sequence of decls.
3783 using data_type = std::pair<unsigned, unsigned>;
3784 using data_type_ref = const data_type &;
3785
3786 using hash_value_type = unsigned;
3787 using offset_type = unsigned;
3788
3789 explicit ASTDeclContextNameLookupTrait(ASTWriter &Writer) : Writer(Writer) {}
3790
3791 template<typename Coll>
3792 data_type getData(const Coll &Decls) {
3793 unsigned Start = DeclIDs.size();
3794 for (NamedDecl *D : Decls) {
3795 DeclIDs.push_back(
3796 Writer.GetDeclRef(getDeclForLocalLookup(Writer.getLangOpts(), D)));
3797 }
3798 return std::make_pair(Start, DeclIDs.size());
3799 }
3800
3801 data_type ImportData(const reader::ASTDeclContextNameLookupTrait::data_type &FromReader) {
3802 unsigned Start = DeclIDs.size();
3803 for (auto ID : FromReader)
3804 DeclIDs.push_back(ID);
3805 return std::make_pair(Start, DeclIDs.size());
3806 }
3807
3808 static bool EqualKey(key_type_ref a, key_type_ref b) {
3809 return a == b;
3810 }
3811
3812 hash_value_type ComputeHash(DeclarationNameKey Name) {
3813 return Name.getHash();
3814 }
3815
3816 void EmitFileRef(raw_ostream &Out, ModuleFile *F) const {
3817 assert(Writer.hasChain() &&(static_cast <bool> (Writer.hasChain() && "have reference to loaded module file but no chain?"
) ? void (0) : __assert_fail ("Writer.hasChain() && \"have reference to loaded module file but no chain?\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3818, __extension__ __PRETTY_FUNCTION__))
3818 "have reference to loaded module file but no chain?")(static_cast <bool> (Writer.hasChain() && "have reference to loaded module file but no chain?"
) ? void (0) : __assert_fail ("Writer.hasChain() && \"have reference to loaded module file but no chain?\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3818, __extension__ __PRETTY_FUNCTION__))
;
3819
3820 using namespace llvm::support;
3821
3822 endian::Writer<little>(Out)
3823 .write<uint32_t>(Writer.getChain()->getModuleFileID(F));
3824 }
3825
3826 std::pair<unsigned, unsigned> EmitKeyDataLength(raw_ostream &Out,
3827 DeclarationNameKey Name,
3828 data_type_ref Lookup) {
3829 using namespace llvm::support;
3830
3831 endian::Writer<little> LE(Out);
3832 unsigned KeyLen = 1;
3833 switch (Name.getKind()) {
3834 case DeclarationName::Identifier:
3835 case DeclarationName::ObjCZeroArgSelector:
3836 case DeclarationName::ObjCOneArgSelector:
3837 case DeclarationName::ObjCMultiArgSelector:
3838 case DeclarationName::CXXLiteralOperatorName:
3839 case DeclarationName::CXXDeductionGuideName:
3840 KeyLen += 4;
3841 break;
3842 case DeclarationName::CXXOperatorName:
3843 KeyLen += 1;
3844 break;
3845 case DeclarationName::CXXConstructorName:
3846 case DeclarationName::CXXDestructorName:
3847 case DeclarationName::CXXConversionFunctionName:
3848 case DeclarationName::CXXUsingDirective:
3849 break;
3850 }
3851 LE.write<uint16_t>(KeyLen);
3852
3853 // 4 bytes for each DeclID.
3854 unsigned DataLen = 4 * (Lookup.second - Lookup.first);
3855 assert(uint16_t(DataLen) == DataLen &&(static_cast <bool> (uint16_t(DataLen) == DataLen &&
"too many decls for serialized lookup result") ? void (0) : __assert_fail
("uint16_t(DataLen) == DataLen && \"too many decls for serialized lookup result\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3856, __extension__ __PRETTY_FUNCTION__))
3856 "too many decls for serialized lookup result")(static_cast <bool> (uint16_t(DataLen) == DataLen &&
"too many decls for serialized lookup result") ? void (0) : __assert_fail
("uint16_t(DataLen) == DataLen && \"too many decls for serialized lookup result\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3856, __extension__ __PRETTY_FUNCTION__))
;
3857 LE.write<uint16_t>(DataLen);
3858
3859 return std::make_pair(KeyLen, DataLen);
3860 }
3861
3862 void EmitKey(raw_ostream &Out, DeclarationNameKey Name, unsigned) {
3863 using namespace llvm::support;
3864
3865 endian::Writer<little> LE(Out);
3866 LE.write<uint8_t>(Name.getKind());
3867 switch (Name.getKind()) {
3868 case DeclarationName::Identifier:
3869 case DeclarationName::CXXLiteralOperatorName:
3870 case DeclarationName::CXXDeductionGuideName:
3871 LE.write<uint32_t>(Writer.getIdentifierRef(Name.getIdentifier()));
3872 return;
3873 case DeclarationName::ObjCZeroArgSelector:
3874 case DeclarationName::ObjCOneArgSelector:
3875 case DeclarationName::ObjCMultiArgSelector:
3876 LE.write<uint32_t>(Writer.getSelectorRef(Name.getSelector()));
3877 return;
3878 case DeclarationName::CXXOperatorName:
3879 assert(Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS &&(static_cast <bool> (Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS
&& "Invalid operator?") ? void (0) : __assert_fail (
"Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS && \"Invalid operator?\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3880, __extension__ __PRETTY_FUNCTION__))
3880 "Invalid operator?")(static_cast <bool> (Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS
&& "Invalid operator?") ? void (0) : __assert_fail (
"Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS && \"Invalid operator?\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3880, __extension__ __PRETTY_FUNCTION__))
;
3881 LE.write<uint8_t>(Name.getOperatorKind());
3882 return;
3883 case DeclarationName::CXXConstructorName:
3884 case DeclarationName::CXXDestructorName:
3885 case DeclarationName::CXXConversionFunctionName:
3886 case DeclarationName::CXXUsingDirective:
3887 return;
3888 }
3889
3890 llvm_unreachable("Invalid name kind?")::llvm::llvm_unreachable_internal("Invalid name kind?", "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3890)
;
3891 }
3892
3893 void EmitData(raw_ostream &Out, key_type_ref, data_type Lookup,
3894 unsigned DataLen) {
3895 using namespace llvm::support;
3896
3897 endian::Writer<little> LE(Out);
3898 uint64_t Start = Out.tell(); (void)Start;
3899 for (unsigned I = Lookup.first, N = Lookup.second; I != N; ++I)
3900 LE.write<uint32_t>(DeclIDs[I]);
3901 assert(Out.tell() - Start == DataLen && "Data length is wrong")(static_cast <bool> (Out.tell() - Start == DataLen &&
"Data length is wrong") ? void (0) : __assert_fail ("Out.tell() - Start == DataLen && \"Data length is wrong\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3901, __extension__ __PRETTY_FUNCTION__))
;
3902 }
3903};
3904
3905} // namespace
3906
3907bool ASTWriter::isLookupResultExternal(StoredDeclsList &Result,
3908 DeclContext *DC) {
3909 return Result.hasExternalDecls() && DC->NeedToReconcileExternalVisibleStorage;
3910}
3911
3912bool ASTWriter::isLookupResultEntirelyExternal(StoredDeclsList &Result,
3913 DeclContext *DC) {
3914 for (auto *D : Result.getLookupResult())
3915 if (!getDeclForLocalLookup(getLangOpts(), D)->isFromASTFile())
3916 return false;
3917
3918 return true;
3919}
3920
3921void
3922ASTWriter::GenerateNameLookupTable(const DeclContext *ConstDC,
3923 llvm::SmallVectorImpl<char> &LookupTable) {
3924 assert(!ConstDC->HasLazyLocalLexicalLookups &&(static_cast <bool> (!ConstDC->HasLazyLocalLexicalLookups
&& !ConstDC->HasLazyExternalLexicalLookups &&
"must call buildLookups first") ? void (0) : __assert_fail (
"!ConstDC->HasLazyLocalLexicalLookups && !ConstDC->HasLazyExternalLexicalLookups && \"must call buildLookups first\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3926, __extension__ __PRETTY_FUNCTION__))
3925 !ConstDC->HasLazyExternalLexicalLookups &&(static_cast <bool> (!ConstDC->HasLazyLocalLexicalLookups
&& !ConstDC->HasLazyExternalLexicalLookups &&
"must call buildLookups first") ? void (0) : __assert_fail (
"!ConstDC->HasLazyLocalLexicalLookups && !ConstDC->HasLazyExternalLexicalLookups && \"must call buildLookups first\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3926, __extension__ __PRETTY_FUNCTION__))
3926 "must call buildLookups first")(static_cast <bool> (!ConstDC->HasLazyLocalLexicalLookups
&& !ConstDC->HasLazyExternalLexicalLookups &&
"must call buildLookups first") ? void (0) : __assert_fail (
"!ConstDC->HasLazyLocalLexicalLookups && !ConstDC->HasLazyExternalLexicalLookups && \"must call buildLookups first\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3926, __extension__ __PRETTY_FUNCTION__))
;
3927
3928 // FIXME: We need to build the lookups table, which is logically const.
3929 auto *DC = const_cast<DeclContext*>(ConstDC);
3930 assert(DC == DC->getPrimaryContext() && "only primary DC has lookup table")(static_cast <bool> (DC == DC->getPrimaryContext() &&
"only primary DC has lookup table") ? void (0) : __assert_fail
("DC == DC->getPrimaryContext() && \"only primary DC has lookup table\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3930, __extension__ __PRETTY_FUNCTION__))
;
3931
3932 // Create the on-disk hash table representation.
3933 MultiOnDiskHashTableGenerator<reader::ASTDeclContextNameLookupTrait,
3934 ASTDeclContextNameLookupTrait> Generator;
3935 ASTDeclContextNameLookupTrait Trait(*this);
3936
3937 // The first step is to collect the declaration names which we need to
3938 // serialize into the name lookup table, and to collect them in a stable
3939 // order.
3940 SmallVector<DeclarationName, 16> Names;
3941
3942 // We also build up small sets of the constructor and conversion function
3943 // names which are visible.
3944 llvm::SmallSet<DeclarationName, 8> ConstructorNameSet, ConversionNameSet;
3945
3946 for (auto &Lookup : *DC->buildLookup()) {
3947 auto &Name = Lookup.first;
3948 auto &Result = Lookup.second;
3949
3950 // If there are no local declarations in our lookup result, we
3951 // don't need to write an entry for the name at all. If we can't
3952 // write out a lookup set without performing more deserialization,
3953 // just skip this entry.
3954 if (isLookupResultExternal(Result, DC) &&
3955 isLookupResultEntirelyExternal(Result, DC))
3956 continue;
3957
3958 // We also skip empty results. If any of the results could be external and
3959 // the currently available results are empty, then all of the results are
3960 // external and we skip it above. So the only way we get here with an empty
3961 // results is when no results could have been external *and* we have
3962 // external results.
3963 //
3964 // FIXME: While we might want to start emitting on-disk entries for negative
3965 // lookups into a decl context as an optimization, today we *have* to skip
3966 // them because there are names with empty lookup results in decl contexts
3967 // which we can't emit in any stable ordering: we lookup constructors and
3968 // conversion functions in the enclosing namespace scope creating empty
3969 // results for them. This in almost certainly a bug in Clang's name lookup,
3970 // but that is likely to be hard or impossible to fix and so we tolerate it
3971 // here by omitting lookups with empty results.
3972 if (Lookup.second.getLookupResult().empty())
3973 continue;
3974
3975 switch (Lookup.first.getNameKind()) {
3976 default:
3977 Names.push_back(Lookup.first);
3978 break;
3979
3980 case DeclarationName::CXXConstructorName:
3981 assert(isa<CXXRecordDecl>(DC) &&(static_cast <bool> (isa<CXXRecordDecl>(DC) &&
"Cannot have a constructor name outside of a class!") ? void
(0) : __assert_fail ("isa<CXXRecordDecl>(DC) && \"Cannot have a constructor name outside of a class!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3982, __extension__ __PRETTY_FUNCTION__))
3982 "Cannot have a constructor name outside of a class!")(static_cast <bool> (isa<CXXRecordDecl>(DC) &&
"Cannot have a constructor name outside of a class!") ? void
(0) : __assert_fail ("isa<CXXRecordDecl>(DC) && \"Cannot have a constructor name outside of a class!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3982, __extension__ __PRETTY_FUNCTION__))
;
3983 ConstructorNameSet.insert(Name);
3984 break;
3985
3986 case DeclarationName::CXXConversionFunctionName:
3987 assert(isa<CXXRecordDecl>(DC) &&(static_cast <bool> (isa<CXXRecordDecl>(DC) &&
"Cannot have a conversion function name outside of a class!"
) ? void (0) : __assert_fail ("isa<CXXRecordDecl>(DC) && \"Cannot have a conversion function name outside of a class!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3988, __extension__ __PRETTY_FUNCTION__))
3988 "Cannot have a conversion function name outside of a class!")(static_cast <bool> (isa<CXXRecordDecl>(DC) &&
"Cannot have a conversion function name outside of a class!"
) ? void (0) : __assert_fail ("isa<CXXRecordDecl>(DC) && \"Cannot have a conversion function name outside of a class!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3988, __extension__ __PRETTY_FUNCTION__))
;
3989 ConversionNameSet.insert(Name);
3990 break;
3991 }
3992 }
3993
3994 // Sort the names into a stable order.
3995 std::sort(Names.begin(), Names.end());
3996
3997 if (auto *D = dyn_cast<CXXRecordDecl>(DC)) {
3998 // We need to establish an ordering of constructor and conversion function
3999 // names, and they don't have an intrinsic ordering.
4000
4001 // First we try the easy case by forming the current context's constructor
4002 // name and adding that name first. This is a very useful optimization to
4003 // avoid walking the lexical declarations in many cases, and it also
4004 // handles the only case where a constructor name can come from some other
4005 // lexical context -- when that name is an implicit constructor merged from
4006 // another declaration in the redecl chain. Any non-implicit constructor or
4007 // conversion function which doesn't occur in all the lexical contexts
4008 // would be an ODR violation.
4009 auto ImplicitCtorName = Context->DeclarationNames.getCXXConstructorName(
4010 Context->getCanonicalType(Context->getRecordType(D)));
4011 if (ConstructorNameSet.erase(ImplicitCtorName))
4012 Names.push_back(ImplicitCtorName);
4013
4014 // If we still have constructors or conversion functions, we walk all the
4015 // names in the decl and add the constructors and conversion functions
4016 // which are visible in the order they lexically occur within the context.
4017 if (!ConstructorNameSet.empty() || !ConversionNameSet.empty())
4018 for (Decl *ChildD : cast<CXXRecordDecl>(DC)->decls())
4019 if (auto *ChildND = dyn_cast<NamedDecl>(ChildD)) {
4020 auto Name = ChildND->getDeclName();
4021 switch (Name.getNameKind()) {
4022 default:
4023 continue;
4024
4025 case DeclarationName::CXXConstructorName:
4026 if (ConstructorNameSet.erase(Name))
4027 Names.push_back(Name);
4028 break;
4029
4030 case DeclarationName::CXXConversionFunctionName:
4031 if (ConversionNameSet.erase(Name))
4032 Names.push_back(Name);
4033 break;
4034 }
4035
4036 if (ConstructorNameSet.empty() && ConversionNameSet.empty())
4037 break;
4038 }
4039
4040 assert(ConstructorNameSet.empty() && "Failed to find all of the visible "(static_cast <bool> (ConstructorNameSet.empty() &&
"Failed to find all of the visible " "constructors by walking all the "
"lexical members of the context.") ? void (0) : __assert_fail
("ConstructorNameSet.empty() && \"Failed to find all of the visible \" \"constructors by walking all the \" \"lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4042, __extension__ __PRETTY_FUNCTION__))
4041 "constructors by walking all the "(static_cast <bool> (ConstructorNameSet.empty() &&
"Failed to find all of the visible " "constructors by walking all the "
"lexical members of the context.") ? void (0) : __assert_fail
("ConstructorNameSet.empty() && \"Failed to find all of the visible \" \"constructors by walking all the \" \"lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4042, __extension__ __PRETTY_FUNCTION__))
4042 "lexical members of the context.")(static_cast <bool> (ConstructorNameSet.empty() &&
"Failed to find all of the visible " "constructors by walking all the "
"lexical members of the context.") ? void (0) : __assert_fail
("ConstructorNameSet.empty() && \"Failed to find all of the visible \" \"constructors by walking all the \" \"lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4042, __extension__ __PRETTY_FUNCTION__))
;
4043 assert(ConversionNameSet.empty() && "Failed to find all of the visible "(static_cast <bool> (ConversionNameSet.empty() &&
"Failed to find all of the visible " "conversion functions by walking all "
"the lexical members of the context.") ? void (0) : __assert_fail
("ConversionNameSet.empty() && \"Failed to find all of the visible \" \"conversion functions by walking all \" \"the lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4045, __extension__ __PRETTY_FUNCTION__))
4044 "conversion functions by walking all "(static_cast <bool> (ConversionNameSet.empty() &&
"Failed to find all of the visible " "conversion functions by walking all "
"the lexical members of the context.") ? void (0) : __assert_fail
("ConversionNameSet.empty() && \"Failed to find all of the visible \" \"conversion functions by walking all \" \"the lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4045, __extension__ __PRETTY_FUNCTION__))
4045 "the lexical members of the context.")(static_cast <bool> (ConversionNameSet.empty() &&
"Failed to find all of the visible " "conversion functions by walking all "
"the lexical members of the context.") ? void (0) : __assert_fail
("ConversionNameSet.empty() && \"Failed to find all of the visible \" \"conversion functions by walking all \" \"the lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4045, __extension__ __PRETTY_FUNCTION__))
;
4046 }
4047
4048 // Next we need to do a lookup with each name into this decl context to fully
4049 // populate any results from external sources. We don't actually use the
4050 // results of these lookups because we only want to use the results after all
4051 // results have been loaded and the pointers into them will be stable.
4052 for (auto &Name : Names)
4053 DC->lookup(Name);
4054
4055 // Now we need to insert the results for each name into the hash table. For
4056 // constructor names and conversion function names, we actually need to merge
4057 // all of the results for them into one list of results each and insert
4058 // those.
4059 SmallVector<NamedDecl *, 8> ConstructorDecls;
4060 SmallVector<NamedDecl *, 8> ConversionDecls;
4061
4062 // Now loop over the names, either inserting them or appending for the two
4063 // special cases.
4064 for (auto &Name : Names) {
4065 DeclContext::lookup_result Result = DC->noload_lookup(Name);
4066
4067 switch (Name.getNameKind()) {
4068 default:
4069 Generator.insert(Name, Trait.getData(Result), Trait);
4070 break;
4071
4072 case DeclarationName::CXXConstructorName:
4073 ConstructorDecls.append(Result.begin(), Result.end());
4074 break;
4075
4076 case DeclarationName::CXXConversionFunctionName:
4077 ConversionDecls.append(Result.begin(), Result.end());
4078 break;
4079 }
4080 }
4081
4082 // Handle our two special cases if we ended up having any. We arbitrarily use
4083 // the first declaration's name here because the name itself isn't part of
4084 // the key, only the kind of name is used.
4085 if (!ConstructorDecls.empty())
4086 Generator.insert(ConstructorDecls.front()->getDeclName(),
4087 Trait.getData(ConstructorDecls), Trait);
4088 if (!ConversionDecls.empty())
4089 Generator.insert(ConversionDecls.front()->getDeclName(),
4090 Trait.getData(ConversionDecls), Trait);
4091
4092 // Create the on-disk hash table. Also emit the existing imported and
4093 // merged table if there is one.
4094 auto *Lookups = Chain ? Chain->getLoadedLookupTables(DC) : nullptr;
4095 Generator.emit(LookupTable, Trait, Lookups ? &Lookups->Table : nullptr);
4096}
4097
4098/// \brief Write the block containing all of the declaration IDs
4099/// visible from the given DeclContext.
4100///
4101/// \returns the offset of the DECL_CONTEXT_VISIBLE block within the
4102/// bitstream, or 0 if no block was written.
4103uint64_t ASTWriter::WriteDeclContextVisibleBlock(ASTContext &Context,
4104 DeclContext *DC) {
4105 // If we imported a key declaration of this namespace, write the visible
4106 // lookup results as an update record for it rather than including them
4107 // on this declaration. We will only look at key declarations on reload.
4108 if (isa<NamespaceDecl>(DC) && Chain &&
4109 Chain->getKeyDeclaration(cast<Decl>(DC))->isFromASTFile()) {
4110 // Only do this once, for the first local declaration of the namespace.
4111 for (auto *Prev = cast<NamespaceDecl>(DC)->getPreviousDecl(); Prev;
4112 Prev = Prev->getPreviousDecl())
4113 if (!Prev->isFromASTFile())
4114 return 0;
4115
4116 // Note that we need to emit an update record for the primary context.
4117 UpdatedDeclContexts.insert(DC->getPrimaryContext());
4118
4119 // Make sure all visible decls are written. They will be recorded later. We
4120 // do this using a side data structure so we can sort the names into
4121 // a deterministic order.
4122 StoredDeclsMap *Map = DC->getPrimaryContext()->buildLookup();
4123 SmallVector<std::pair<DeclarationName, DeclContext::lookup_result>, 16>
4124 LookupResults;
4125 if (Map) {
4126 LookupResults.reserve(Map->size());
4127 for (auto &Entry : *Map)
4128 LookupResults.push_back(
4129 std::make_pair(Entry.first, Entry.second.getLookupResult()));
4130 }
4131
4132 std::sort(LookupResults.begin(), LookupResults.end(), llvm::less_first());
4133 for (auto &NameAndResult : LookupResults) {
4134 DeclarationName Name = NameAndResult.first;
4135 DeclContext::lookup_result Result = NameAndResult.second;
4136 if (Name.getNameKind() == DeclarationName::CXXConstructorName ||
4137 Name.getNameKind() == DeclarationName::CXXConversionFunctionName) {
4138 // We have to work around a name lookup bug here where negative lookup
4139 // results for these names get cached in namespace lookup tables (these
4140 // names should never be looked up in a namespace).
4141 assert(Result.empty() && "Cannot have a constructor or conversion "(static_cast <bool> (Result.empty() && "Cannot have a constructor or conversion "
"function name in a namespace!") ? void (0) : __assert_fail (
"Result.empty() && \"Cannot have a constructor or conversion \" \"function name in a namespace!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4142, __extension__ __PRETTY_FUNCTION__))
4142 "function name in a namespace!")(static_cast <bool> (Result.empty() && "Cannot have a constructor or conversion "
"function name in a namespace!") ? void (0) : __assert_fail (
"Result.empty() && \"Cannot have a constructor or conversion \" \"function name in a namespace!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4142, __extension__ __PRETTY_FUNCTION__))
;
4143 continue;
4144 }
4145
4146 for (NamedDecl *ND : Result)
4147 if (!ND->isFromASTFile())
4148 GetDeclRef(ND);
4149 }
4150
4151 return 0;
4152 }
4153
4154 if (DC->getPrimaryContext() != DC)
4155 return 0;
4156
4157 // Skip contexts which don't support name lookup.
4158 if (!DC->isLookupContext())
4159 return 0;
4160
4161 // If not in C++, we perform name lookup for the translation unit via the
4162 // IdentifierInfo chains, don't bother to build a visible-declarations table.
4163 if (DC->isTranslationUnit() && !Context.getLangOpts().CPlusPlus)
4164 return 0;
4165
4166 // Serialize the contents of the mapping used for lookup. Note that,
4167 // although we have two very different code paths, the serialized
4168 // representation is the same for both cases: a declaration name,
4169 // followed by a size, followed by references to the visible
4170 // declarations that have that name.
4171 uint64_t Offset = Stream.GetCurrentBitNo();
4172 StoredDeclsMap *Map = DC->buildLookup();
4173 if (!Map || Map->empty())
4174 return 0;
4175
4176 // Create the on-disk hash table in a buffer.
4177 SmallString<4096> LookupTable;
4178 GenerateNameLookupTable(DC, LookupTable);
4179
4180 // Write the lookup table
4181 RecordData::value_type Record[] = {DECL_CONTEXT_VISIBLE};
4182 Stream.EmitRecordWithBlob(DeclContextVisibleLookupAbbrev, Record,
4183 LookupTable);
4184 ++NumVisibleDeclContexts;
4185 return Offset;
4186}
4187
4188/// \brief Write an UPDATE_VISIBLE block for the given context.
4189///
4190/// UPDATE_VISIBLE blocks contain the declarations that are added to an existing
4191/// DeclContext in a dependent AST file. As such, they only exist for the TU
4192/// (in C++), for namespaces, and for classes with forward-declared unscoped
4193/// enumeration members (in C++11).
4194void ASTWriter::WriteDeclContextVisibleUpdate(const DeclContext *DC) {
4195 StoredDeclsMap *Map = DC->getLookupPtr();
4196 if (!Map || Map->empty())
4197 return;
4198
4199 // Create the on-disk hash table in a buffer.
4200 SmallString<4096> LookupTable;
4201 GenerateNameLookupTable(DC, LookupTable);
4202
4203 // If we're updating a namespace, select a key declaration as the key for the
4204 // update record; those are the only ones that will be checked on reload.
4205 if (isa<NamespaceDecl>(DC))
4206 DC = cast<DeclContext>(Chain->getKeyDeclaration(cast<Decl>(DC)));
4207
4208 // Write the lookup table
4209 RecordData::value_type Record[] = {UPDATE_VISIBLE, getDeclID(cast<Decl>(DC))};
4210 Stream.EmitRecordWithBlob(UpdateVisibleAbbrev, Record, LookupTable);
4211}
4212
4213/// \brief Write an FP_PRAGMA_OPTIONS block for the given FPOptions.
4214void ASTWriter::WriteFPPragmaOptions(const FPOptions &Opts) {
4215 RecordData::value_type Record[] = {Opts.getInt()};
4216 Stream.EmitRecord(FP_PRAGMA_OPTIONS, Record);
1
Calling 'BitstreamWriter::EmitRecord'
4217}
4218
4219/// \brief Write an OPENCL_EXTENSIONS block for the given OpenCLOptions.
4220void ASTWriter::WriteOpenCLExtensions(Sema &SemaRef) {
4221 if (!SemaRef.Context.getLangOpts().OpenCL)
4222 return;
4223
4224 const OpenCLOptions &Opts = SemaRef.getOpenCLOptions();
4225 RecordData Record;
4226 for (const auto &I:Opts.OptMap) {
4227 AddString(I.getKey(), Record);
4228 auto V = I.getValue();
4229 Record.push_back(V.Supported ? 1 : 0);
4230 Record.push_back(V.Enabled ? 1 : 0);
4231 Record.push_back(V.Avail);
4232 Record.push_back(V.Core);
4233 }
4234 Stream.EmitRecord(OPENCL_EXTENSIONS, Record);
4235}
4236
4237void ASTWriter::WriteOpenCLExtensionTypes(Sema &SemaRef) {
4238 if (!SemaRef.Context.getLangOpts().OpenCL)
4239 return;
4240
4241 RecordData Record;
4242 for (const auto &I : SemaRef.OpenCLTypeExtMap) {
4243 Record.push_back(
4244 static_cast<unsigned>(getTypeID(I.first->getCanonicalTypeInternal())));
4245 Record.push_back(I.second.size());
4246 for (auto Ext : I.second)
4247 AddString(Ext, Record);
4248 }
4249 Stream.EmitRecord(OPENCL_EXTENSION_TYPES, Record);
4250}
4251
4252void ASTWriter::WriteOpenCLExtensionDecls(Sema &SemaRef) {
4253 if (!SemaRef.Context.getLangOpts().OpenCL)
4254 return;
4255
4256 RecordData Record;
4257 for (const auto &I : SemaRef.OpenCLDeclExtMap) {
4258 Record.push_back(getDeclID(I.first));
4259 Record.push_back(static_cast<unsigned>(I.second.size()));
4260 for (auto Ext : I.second)
4261 AddString(Ext, Record);
4262 }
4263 Stream.EmitRecord(OPENCL_EXTENSION_DECLS, Record);
4264}
4265
4266void ASTWriter::WriteCUDAPragmas(Sema &SemaRef) {
4267 if (SemaRef.ForceCUDAHostDeviceDepth > 0) {
4268 RecordData::value_type Record[] = {SemaRef.ForceCUDAHostDeviceDepth};
4269 Stream.EmitRecord(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH, Record);
4270 }
4271}
4272
4273void ASTWriter::WriteObjCCategories() {
4274 SmallVector<ObjCCategoriesInfo, 2> CategoriesMap;
4275 RecordData Categories;
4276
4277 for (unsigned I = 0, N = ObjCClassesWithCategories.size(); I != N; ++I) {
4278 unsigned Size = 0;
4279 unsigned StartIndex = Categories.size();
4280
4281 ObjCInterfaceDecl *Class = ObjCClassesWithCategories[I];
4282
4283 // Allocate space for the size.
4284 Categories.push_back(0);
4285
4286 // Add the categories.
4287 for (ObjCInterfaceDecl::known_categories_iterator
4288 Cat = Class->known_categories_begin(),
4289 CatEnd = Class->known_categories_end();
4290 Cat != CatEnd; ++Cat, ++Size) {
4291 assert(getDeclID(*Cat) != 0 && "Bogus category")(static_cast <bool> (getDeclID(*Cat) != 0 && "Bogus category"
) ? void (0) : __assert_fail ("getDeclID(*Cat) != 0 && \"Bogus category\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4291, __extension__ __PRETTY_FUNCTION__))
;
4292 AddDeclRef(*Cat, Categories);
4293 }
4294
4295 // Update the size.
4296 Categories[StartIndex] = Size;
4297
4298 // Record this interface -> category map.
4299 ObjCCategoriesInfo CatInfo = { getDeclID(Class), StartIndex };
4300 CategoriesMap.push_back(CatInfo);
4301 }
4302
4303 // Sort the categories map by the definition ID, since the reader will be
4304 // performing binary searches on this information.
4305 llvm::array_pod_sort(CategoriesMap.begin(), CategoriesMap.end());
4306
4307 // Emit the categories map.
4308 using namespace llvm;
4309
4310 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4311 Abbrev->Add(BitCodeAbbrevOp(OBJC_CATEGORIES_MAP));
4312 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # of entries
4313 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4314 unsigned AbbrevID = Stream.EmitAbbrev(std::move(Abbrev));
4315
4316 RecordData::value_type Record[] = {OBJC_CATEGORIES_MAP, CategoriesMap.size()};
4317 Stream.EmitRecordWithBlob(AbbrevID, Record,
4318 reinterpret_cast<char *>(CategoriesMap.data()),
4319 CategoriesMap.size() * sizeof(ObjCCategoriesInfo));
4320
4321 // Emit the category lists.
4322 Stream.EmitRecord(OBJC_CATEGORIES, Categories);
4323}
4324
4325void ASTWriter::WriteLateParsedTemplates(Sema &SemaRef) {
4326 Sema::LateParsedTemplateMapT &LPTMap = SemaRef.LateParsedTemplateMap;
4327
4328 if (LPTMap.empty())
4329 return;
4330
4331 RecordData Record;
4332 for (auto &LPTMapEntry : LPTMap) {
4333 const FunctionDecl *FD = LPTMapEntry.first;
4334 LateParsedTemplate &LPT = *LPTMapEntry.second;
4335 AddDeclRef(FD, Record);
4336 AddDeclRef(LPT.D, Record);
4337 Record.push_back(LPT.Toks.size());
4338
4339 for (const auto &Tok : LPT.Toks) {
4340 AddToken(Tok, Record);
4341 }
4342 }
4343 Stream.EmitRecord(LATE_PARSED_TEMPLATE, Record);
4344}
4345
4346/// \brief Write the state of 'pragma clang optimize' at the end of the module.
4347void ASTWriter::WriteOptimizePragmaOptions(Sema &SemaRef) {
4348 RecordData Record;
4349 SourceLocation PragmaLoc = SemaRef.getOptimizeOffPragmaLocation();
4350 AddSourceLocation(PragmaLoc, Record);
4351 Stream.EmitRecord(OPTIMIZE_PRAGMA_OPTIONS, Record);
4352}
4353
4354/// \brief Write the state of 'pragma ms_struct' at the end of the module.
4355void ASTWriter::WriteMSStructPragmaOptions(Sema &SemaRef) {
4356 RecordData Record;
4357 Record.push_back(SemaRef.MSStructPragmaOn ? PMSST_ON : PMSST_OFF);
4358 Stream.EmitRecord(MSSTRUCT_PRAGMA_OPTIONS, Record);
4359}
4360
4361/// \brief Write the state of 'pragma pointers_to_members' at the end of the
4362//module.
4363void ASTWriter::WriteMSPointersToMembersPragmaOptions(Sema &SemaRef) {
4364 RecordData Record;
4365 Record.push_back(SemaRef.MSPointerToMemberRepresentationMethod);
4366 AddSourceLocation(SemaRef.ImplicitMSInheritanceAttrLoc, Record);
4367 Stream.EmitRecord(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS, Record);
4368}
4369
4370/// \brief Write the state of 'pragma pack' at the end of the module.
4371void ASTWriter::WritePackPragmaOptions(Sema &SemaRef) {
4372 // Don't serialize pragma pack state for modules, since it should only take
4373 // effect on a per-submodule basis.
4374 if (WritingModule)
4375 return;
4376
4377 RecordData Record;
4378 Record.push_back(SemaRef.PackStack.CurrentValue);
4379 AddSourceLocation(SemaRef.PackStack.CurrentPragmaLocation, Record);
4380 Record.push_back(SemaRef.PackStack.Stack.size());
4381 for (const auto &StackEntry : SemaRef.PackStack.Stack) {
4382 Record.push_back(StackEntry.Value);
4383 AddSourceLocation(StackEntry.PragmaLocation, Record);
4384 AddSourceLocation(StackEntry.PragmaPushLocation, Record);
4385 AddString(StackEntry.StackSlotLabel, Record);
4386 }
4387 Stream.EmitRecord(PACK_PRAGMA_OPTIONS, Record);
4388}
4389
4390void ASTWriter::WriteModuleFileExtension(Sema &SemaRef,
4391 ModuleFileExtensionWriter &Writer) {
4392 // Enter the extension block.
4393 Stream.EnterSubblock(EXTENSION_BLOCK_ID, 4);
4394
4395 // Emit the metadata record abbreviation.
4396 auto Abv = std::make_shared<llvm::BitCodeAbbrev>();
4397 Abv->Add(llvm::BitCodeAbbrevOp(EXTENSION_METADATA));
4398 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4399 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4400 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4401 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4402 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4403 unsigned Abbrev = Stream.EmitAbbrev(std::move(Abv));
4404
4405 // Emit the metadata record.
4406 RecordData Record;
4407 auto Metadata = Writer.getExtension()->getExtensionMetadata();
4408 Record.push_back(EXTENSION_METADATA);
4409 Record.push_back(Metadata.MajorVersion);
4410 Record.push_back(Metadata.MinorVersion);
4411 Record.push_back(Metadata.BlockName.size());
4412 Record.push_back(Metadata.UserInfo.size());
4413 SmallString<64> Buffer;
4414 Buffer += Metadata.BlockName;
4415 Buffer += Metadata.UserInfo;
4416 Stream.EmitRecordWithBlob(Abbrev, Record, Buffer);
4417
4418 // Emit the contents of the extension block.
4419 Writer.writeExtensionContents(SemaRef, Stream);
4420
4421 // Exit the extension block.
4422 Stream.ExitBlock();
4423}
4424
4425//===----------------------------------------------------------------------===//
4426// General Serialization Routines
4427//===----------------------------------------------------------------------===//
4428
4429/// \brief Emit the list of attributes to the specified record.
4430void ASTRecordWriter::AddAttributes(ArrayRef<const Attr *> Attrs) {
4431 auto &Record = *this;
4432 Record.push_back(Attrs.size());
4433 for (const auto *A : Attrs) {
4434 Record.push_back(A->getKind()); // FIXME: stable encoding, target attrs
4435 Record.AddSourceRange(A->getRange());
4436
4437#include "clang/Serialization/AttrPCHWrite.inc"
4438 }
4439}
4440
4441void ASTWriter::AddToken(const Token &Tok, RecordDataImpl &Record) {
4442 AddSourceLocation(Tok.getLocation(), Record);
4443 Record.push_back(Tok.getLength());
4444
4445 // FIXME: When reading literal tokens, reconstruct the literal pointer
4446 // if it is needed.
4447 AddIdentifierRef(Tok.getIdentifierInfo(), Record);
4448 // FIXME: Should translate token kind to a stable encoding.
4449 Record.push_back(Tok.getKind());
4450 // FIXME: Should translate token flags to a stable encoding.
4451 Record.push_back(Tok.getFlags());
4452}
4453
4454void ASTWriter::AddString(StringRef Str, RecordDataImpl &Record) {
4455 Record.push_back(Str.size());
4456 Record.insert(Record.end(), Str.begin(), Str.end());
4457}
4458
4459bool ASTWriter::PreparePathForOutput(SmallVectorImpl<char> &Path) {
4460 assert(Context && "should have context when outputting path")(static_cast <bool> (Context && "should have context when outputting path"
) ? void (0) : __assert_fail ("Context && \"should have context when outputting path\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4460, __extension__ __PRETTY_FUNCTION__))
;
4461
4462 bool Changed =
4463 cleanPathForOutput(Context->getSourceManager().getFileManager(), Path);
4464
4465 // Remove a prefix to make the path relative, if relevant.
4466 const char *PathBegin = Path.data();
4467 const char *PathPtr =
4468 adjustFilenameForRelocatableAST(PathBegin, BaseDirectory);
4469 if (PathPtr != PathBegin) {
4470 Path.erase(Path.begin(), Path.begin() + (PathPtr - PathBegin));
4471 Changed = true;
4472 }
4473
4474 return Changed;
4475}
4476
4477void ASTWriter::AddPath(StringRef Path, RecordDataImpl &Record) {
4478 SmallString<128> FilePath(Path);
4479 PreparePathForOutput(FilePath);
4480 AddString(FilePath, Record);
4481}
4482
4483void ASTWriter::EmitRecordWithPath(unsigned Abbrev, RecordDataRef Record,
4484 StringRef Path) {
4485 SmallString<128> FilePath(Path);
4486 PreparePathForOutput(FilePath);
4487 Stream.EmitRecordWithBlob(Abbrev, Record, FilePath);
4488}
4489
4490void ASTWriter::AddVersionTuple(const VersionTuple &Version,
4491 RecordDataImpl &Record) {
4492 Record.push_back(Version.getMajor());
4493 if (Optional<unsigned> Minor = Version.getMinor())
4494 Record.push_back(*Minor + 1);
4495 else
4496 Record.push_back(0);
4497 if (Optional<unsigned> Subminor = Version.getSubminor())
4498 Record.push_back(*Subminor + 1);
4499 else
4500 Record.push_back(0);
4501}
4502
4503/// \brief Note that the identifier II occurs at the given offset
4504/// within the identifier table.
4505void ASTWriter::SetIdentifierOffset(const IdentifierInfo *II, uint32_t Offset) {
4506 IdentID ID = IdentifierIDs[II];
4507 // Only store offsets new to this AST file. Other identifier names are looked
4508 // up earlier in the chain and thus don't need an offset.
4509 if (ID >= FirstIdentID)
4510 IdentifierOffsets[ID - FirstIdentID] = Offset;
4511}
4512
4513/// \brief Note that the selector Sel occurs at the given offset
4514/// within the method pool/selector table.
4515void ASTWriter::SetSelectorOffset(Selector Sel, uint32_t Offset) {
4516 unsigned ID = SelectorIDs[Sel];
4517 assert(ID && "Unknown selector")(static_cast <bool> (ID && "Unknown selector") ?
void (0) : __assert_fail ("ID && \"Unknown selector\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4517, __extension__ __PRETTY_FUNCTION__))
;
4518 // Don't record offsets for selectors that are also available in a different
4519 // file.
4520 if (ID < FirstSelectorID)
4521 return;
4522 SelectorOffsets[ID - FirstSelectorID] = Offset;
4523}
4524
4525ASTWriter::ASTWriter(llvm::BitstreamWriter &Stream,
4526 SmallVectorImpl<char> &Buffer, MemoryBufferCache &PCMCache,
4527 ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions,
4528 bool IncludeTimestamps)
4529 : Stream(Stream), Buffer(Buffer), PCMCache(PCMCache),
4530 IncludeTimestamps(IncludeTimestamps) {
4531 for (const auto &Ext : Extensions) {
4532 if (auto Writer = Ext->createExtensionWriter(*this))
4533 ModuleFileExtensionWriters.push_back(std::move(Writer));
4534 }
4535}
4536
4537ASTWriter::~ASTWriter() {
4538 llvm::DeleteContainerSeconds(FileDeclIDs);
4539}
4540
4541const LangOptions &ASTWriter::getLangOpts() const {
4542 assert(WritingAST && "can't determine lang opts when not writing AST")(static_cast <bool> (WritingAST && "can't determine lang opts when not writing AST"
) ? void (0) : __assert_fail ("WritingAST && \"can't determine lang opts when not writing AST\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4542, __extension__ __PRETTY_FUNCTION__))
;
4543 return Context->getLangOpts();
4544}
4545
4546time_t ASTWriter::getTimestampForOutput(const FileEntry *E) const {
4547 return IncludeTimestamps ? E->getModificationTime() : 0;
4548}
4549
4550ASTFileSignature ASTWriter::WriteAST(Sema &SemaRef,
4551 const std::string &OutputFile,
4552 Module *WritingModule, StringRef isysroot,
4553 bool hasErrors) {
4554 WritingAST = true;
4555
4556 ASTHasCompilerErrors = hasErrors;
4557
4558 // Emit the file header.
4559 Stream.Emit((unsigned)'C', 8);
4560 Stream.Emit((unsigned)'P', 8);
4561 Stream.Emit((unsigned)'C', 8);
4562 Stream.Emit((unsigned)'H', 8);
4563
4564 WriteBlockInfoBlock();
4565
4566 Context = &SemaRef.Context;
4567 PP = &SemaRef.PP;
4568 this->WritingModule = WritingModule;
4569 ASTFileSignature Signature =
4570 WriteASTCore(SemaRef, isysroot, OutputFile, WritingModule);
4571 Context = nullptr;
4572 PP = nullptr;
4573 this->WritingModule = nullptr;
4574 this->BaseDirectory.clear();
4575
4576 WritingAST = false;
4577 if (SemaRef.Context.getLangOpts().ImplicitModules && WritingModule) {
4578 // Construct MemoryBuffer and update buffer manager.
4579 PCMCache.addBuffer(OutputFile,
4580 llvm::MemoryBuffer::getMemBufferCopy(
4581 StringRef(Buffer.begin(), Buffer.size())));
4582 }
4583 return Signature;
4584}
4585
4586template<typename Vector>
4587static void AddLazyVectorDecls(ASTWriter &Writer, Vector &Vec,
4588 ASTWriter::RecordData &Record) {
4589 for (typename Vector::iterator I = Vec.begin(nullptr, true), E = Vec.end();
4590 I != E; ++I) {
4591 Writer.AddDeclRef(*I, Record);
4592 }
4593}
4594
4595ASTFileSignature ASTWriter::WriteASTCore(Sema &SemaRef, StringRef isysroot,
4596 const std::string &OutputFile,
4597 Module *WritingModule) {
4598 using namespace llvm;
4599
4600 bool isModule = WritingModule != nullptr;
4601
4602 // Make sure that the AST reader knows to finalize itself.
4603 if (Chain)
4604 Chain->finalizeForWriting();
4605
4606 ASTContext &Context = SemaRef.Context;
4607 Preprocessor &PP = SemaRef.PP;
4608
4609 // Set up predefined declaration IDs.
4610 auto RegisterPredefDecl = [&] (Decl *D, PredefinedDeclIDs ID) {
4611 if (D) {
4612 assert(D->isCanonicalDecl() && "predefined decl is not canonical")(static_cast <bool> (D->isCanonicalDecl() &&
"predefined decl is not canonical") ? void (0) : __assert_fail
("D->isCanonicalDecl() && \"predefined decl is not canonical\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4612, __extension__ __PRETTY_FUNCTION__))
;
4613 DeclIDs[D] = ID;
4614 }
4615 };
4616 RegisterPredefDecl(Context.getTranslationUnitDecl(),
4617 PREDEF_DECL_TRANSLATION_UNIT_ID);
4618 RegisterPredefDecl(Context.ObjCIdDecl, PREDEF_DECL_OBJC_ID_ID);
4619 RegisterPredefDecl(Context.ObjCSelDecl, PREDEF_DECL_OBJC_SEL_ID);
4620 RegisterPredefDecl(Context.ObjCClassDecl, PREDEF_DECL_OBJC_CLASS_ID);
4621 RegisterPredefDecl(Context.ObjCProtocolClassDecl,
4622 PREDEF_DECL_OBJC_PROTOCOL_ID);
4623 RegisterPredefDecl(Context.Int128Decl, PREDEF_DECL_INT_128_ID);
4624 RegisterPredefDecl(Context.UInt128Decl, PREDEF_DECL_UNSIGNED_INT_128_ID);
4625 RegisterPredefDecl(Context.ObjCInstanceTypeDecl,
4626 PREDEF_DECL_OBJC_INSTANCETYPE_ID);
4627 RegisterPredefDecl(Context.BuiltinVaListDecl, PREDEF_DECL_BUILTIN_VA_LIST_ID);
4628 RegisterPredefDecl(Context.VaListTagDecl, PREDEF_DECL_VA_LIST_TAG);
4629 RegisterPredefDecl(Context.BuiltinMSVaListDecl,
4630 PREDEF_DECL_BUILTIN_MS_VA_LIST_ID);
4631 RegisterPredefDecl(Context.ExternCContext, PREDEF_DECL_EXTERN_C_CONTEXT_ID);
4632 RegisterPredefDecl(Context.MakeIntegerSeqDecl,
4633 PREDEF_DECL_MAKE_INTEGER_SEQ_ID);
4634 RegisterPredefDecl(Context.CFConstantStringTypeDecl,
4635 PREDEF_DECL_CF_CONSTANT_STRING_ID);
4636 RegisterPredefDecl(Context.CFConstantStringTagDecl,
4637 PREDEF_DECL_CF_CONSTANT_STRING_TAG_ID);
4638 RegisterPredefDecl(Context.TypePackElementDecl,
4639 PREDEF_DECL_TYPE_PACK_ELEMENT_ID);
4640
4641 // Build a record containing all of the tentative definitions in this file, in
4642 // TentativeDefinitions order. Generally, this record will be empty for
4643 // headers.
4644 RecordData TentativeDefinitions;
4645 AddLazyVectorDecls(*this, SemaRef.TentativeDefinitions, TentativeDefinitions);
4646
4647 // Build a record containing all of the file scoped decls in this file.
4648 RecordData UnusedFileScopedDecls;
4649 if (!isModule)
4650 AddLazyVectorDecls(*this, SemaRef.UnusedFileScopedDecls,
4651 UnusedFileScopedDecls);
4652
4653 // Build a record containing all of the delegating constructors we still need
4654 // to resolve.
4655 RecordData DelegatingCtorDecls;
4656 if (!isModule)
4657 AddLazyVectorDecls(*this, SemaRef.DelegatingCtorDecls, DelegatingCtorDecls);
4658
4659 // Write the set of weak, undeclared identifiers. We always write the
4660 // entire table, since later PCH files in a PCH chain are only interested in
4661 // the results at the end of the chain.
4662 RecordData WeakUndeclaredIdentifiers;
4663 for (auto &WeakUndeclaredIdentifier : SemaRef.WeakUndeclaredIdentifiers) {
4664 IdentifierInfo *II = WeakUndeclaredIdentifier.first;
4665 WeakInfo &WI = WeakUndeclaredIdentifier.second;
4666 AddIdentifierRef(II, WeakUndeclaredIdentifiers);
4667 AddIdentifierRef(WI.getAlias(), WeakUndeclaredIdentifiers);
4668 AddSourceLocation(WI.getLocation(), WeakUndeclaredIdentifiers);
4669 WeakUndeclaredIdentifiers.push_back(WI.getUsed());
4670 }
4671
4672 // Build a record containing all of the ext_vector declarations.
4673 RecordData ExtVectorDecls;
4674 AddLazyVectorDecls(*this, SemaRef.ExtVectorDecls, ExtVectorDecls);
4675
4676 // Build a record containing all of the VTable uses information.
4677 RecordData VTableUses;
4678 if (!SemaRef.VTableUses.empty()) {
4679 for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I) {
4680 AddDeclRef(SemaRef.VTableUses[I].first, VTableUses);
4681 AddSourceLocation(SemaRef.VTableUses[I].second, VTableUses);
4682 VTableUses.push_back(SemaRef.VTablesUsed[SemaRef.VTableUses[I].first]);
4683 }
4684 }
4685
4686 // Build a record containing all of the UnusedLocalTypedefNameCandidates.
4687 RecordData UnusedLocalTypedefNameCandidates;
4688 for (const TypedefNameDecl *TD : SemaRef.UnusedLocalTypedefNameCandidates)
4689 AddDeclRef(TD, UnusedLocalTypedefNameCandidates);
4690
4691 // Build a record containing all of pending implicit instantiations.
4692 RecordData PendingInstantiations;
4693 for (const auto &I : SemaRef.PendingInstantiations) {
4694 AddDeclRef(I.first, PendingInstantiations);
4695 AddSourceLocation(I.second, PendingInstantiations);
4696 }
4697 assert(SemaRef.PendingLocalImplicitInstantiations.empty() &&(static_cast <bool> (SemaRef.PendingLocalImplicitInstantiations
.empty() && "There are local ones at end of translation unit!"
) ? void (0) : __assert_fail ("SemaRef.PendingLocalImplicitInstantiations.empty() && \"There are local ones at end of translation unit!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4698, __extension__ __PRETTY_FUNCTION__))
4698 "There are local ones at end of translation unit!")(static_cast <bool> (SemaRef.PendingLocalImplicitInstantiations
.empty() && "There are local ones at end of translation unit!"
) ? void (0) : __assert_fail ("SemaRef.PendingLocalImplicitInstantiations.empty() && \"There are local ones at end of translation unit!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4698, __extension__ __PRETTY_FUNCTION__))
;
4699
4700 // Build a record containing some declaration references.
4701 RecordData SemaDeclRefs;
4702 if (SemaRef.StdNamespace || SemaRef.StdBadAlloc || SemaRef.StdAlignValT) {
4703 AddDeclRef(SemaRef.getStdNamespace(), SemaDeclRefs);
4704 AddDeclRef(SemaRef.getStdBadAlloc(), SemaDeclRefs);
4705 AddDeclRef(SemaRef.getStdAlignValT(), SemaDeclRefs);
4706 }
4707
4708 RecordData CUDASpecialDeclRefs;
4709 if (Context.getcudaConfigureCallDecl()) {
4710 AddDeclRef(Context.getcudaConfigureCallDecl(), CUDASpecialDeclRefs);
4711 }
4712
4713 // Build a record containing all of the known namespaces.
4714 RecordData KnownNamespaces;
4715 for (const auto &I : SemaRef.KnownNamespaces) {
4716 if (!I.second)
4717 AddDeclRef(I.first, KnownNamespaces);
4718 }
4719
4720 // Build a record of all used, undefined objects that require definitions.
4721 RecordData UndefinedButUsed;
4722
4723 SmallVector<std::pair<NamedDecl *, SourceLocation>, 16> Undefined;
4724 SemaRef.getUndefinedButUsed(Undefined);
4725 for (const auto &I : Undefined) {
4726 AddDeclRef(I.first, UndefinedButUsed);
4727 AddSourceLocation(I.second, UndefinedButUsed);
4728 }
4729
4730 // Build a record containing all delete-expressions that we would like to
4731 // analyze later in AST.
4732 RecordData DeleteExprsToAnalyze;
4733
4734 for (const auto &DeleteExprsInfo :
4735 SemaRef.getMismatchingDeleteExpressions()) {
4736 AddDeclRef(DeleteExprsInfo.first, DeleteExprsToAnalyze);
4737 DeleteExprsToAnalyze.push_back(DeleteExprsInfo.second.size());
4738 for (const auto &DeleteLoc : DeleteExprsInfo.second) {
4739 AddSourceLocation(DeleteLoc.first, DeleteExprsToAnalyze);
4740 DeleteExprsToAnalyze.push_back(DeleteLoc.second);
4741 }
4742 }
4743
4744 // Write the control block
4745 WriteControlBlock(PP, Context, isysroot, OutputFile);
4746
4747 // Write the remaining AST contents.
4748 Stream.EnterSubblock(AST_BLOCK_ID, 5);
4749
4750 // This is so that older clang versions, before the introduction
4751 // of the control block, can read and reject the newer PCH format.
4752 {
4753 RecordData Record = {VERSION_MAJOR};
4754 Stream.EmitRecord(METADATA_OLD_FORMAT, Record);
4755 }
4756
4757 // Create a lexical update block containing all of the declarations in the
4758 // translation unit that do not come from other AST files.
4759 const TranslationUnitDecl *TU = Context.getTranslationUnitDecl();
4760 SmallVector<uint32_t, 128> NewGlobalKindDeclPairs;
4761 for (const auto *D : TU->noload_decls()) {
4762 if (!D->isFromASTFile()) {
4763 NewGlobalKindDeclPairs.push_back(D->getKind());
4764 NewGlobalKindDeclPairs.push_back(GetDeclRef(D));
4765 }
4766 }
4767
4768 auto Abv = std::make_shared<BitCodeAbbrev>();
4769 Abv->Add(llvm::BitCodeAbbrevOp(TU_UPDATE_LEXICAL));
4770 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4771 unsigned TuUpdateLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv));
4772 {
4773 RecordData::value_type Record[] = {TU_UPDATE_LEXICAL};
4774 Stream.EmitRecordWithBlob(TuUpdateLexicalAbbrev, Record,
4775 bytes(NewGlobalKindDeclPairs));
4776 }
4777
4778 // And a visible updates block for the translation unit.
4779 Abv = std::make_shared<BitCodeAbbrev>();
4780 Abv->Add(llvm::BitCodeAbbrevOp(UPDATE_VISIBLE));
4781 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4782 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4783 UpdateVisibleAbbrev = Stream.EmitAbbrev(std::move(Abv));
4784 WriteDeclContextVisibleUpdate(TU);
4785
4786 // If we have any extern "C" names, write out a visible update for them.
4787 if (Context.ExternCContext)
4788 WriteDeclContextVisibleUpdate(Context.ExternCContext);
4789
4790 // If the translation unit has an anonymous namespace, and we don't already
4791 // have an update block for it, write it as an update block.
4792 // FIXME: Why do we not do this if there's already an update block?
4793 if (NamespaceDecl *NS = TU->getAnonymousNamespace()) {
4794 ASTWriter::UpdateRecord &Record = DeclUpdates[TU];
4795 if (Record.empty())
4796 Record.push_back(DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, NS));
4797 }
4798
4799 // Add update records for all mangling numbers and static local numbers.
4800 // These aren't really update records, but this is a convenient way of
4801 // tagging this rare extra data onto the declarations.
4802 for (const auto &Number : Context.MangleNumbers)
4803 if (!Number.first->isFromASTFile())
4804 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_MANGLING_NUMBER,
4805 Number.second));
4806 for (const auto &Number : Context.StaticLocalNumbers)
4807 if (!Number.first->isFromASTFile())
4808 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_STATIC_LOCAL_NUMBER,
4809 Number.second));
4810
4811 // Make sure visible decls, added to DeclContexts previously loaded from
4812 // an AST file, are registered for serialization. Likewise for template
4813 // specializations added to imported templates.
4814 for (const auto *I : DeclsToEmitEvenIfUnreferenced) {
4815 GetDeclRef(I);
4816 }
4817
4818 // Make sure all decls associated with an identifier are registered for
4819 // serialization, if we're storing decls with identifiers.
4820 if (!WritingModule || !getLangOpts().CPlusPlus) {
4821 llvm::SmallVector<const IdentifierInfo*, 256> IIs;
4822 for (const auto &ID : PP.getIdentifierTable()) {
4823 const IdentifierInfo *II = ID.second;
4824 if (!Chain || !II->isFromAST() || II->hasChangedSinceDeserialization())
4825 IIs.push_back(II);
4826 }
4827 // Sort the identifiers to visit based on their name.
4828 std::sort(IIs.begin(), IIs.end(), llvm::less_ptr<IdentifierInfo>());
4829 for (const IdentifierInfo *II : IIs) {
4830 for (IdentifierResolver::iterator D = SemaRef.IdResolver.begin(II),
4831 DEnd = SemaRef.IdResolver.end();
4832 D != DEnd; ++D) {
4833 GetDeclRef(*D);
4834 }
4835 }
4836 }
4837
4838 // For method pool in the module, if it contains an entry for a selector,
4839 // the entry should be complete, containing everything introduced by that
4840 // module and all modules it imports. It's possible that the entry is out of
4841 // date, so we need to pull in the new content here.
4842
4843 // It's possible that updateOutOfDateSelector can update SelectorIDs. To be
4844 // safe, we copy all selectors out.
4845 llvm::SmallVector<Selector, 256> AllSelectors;
4846 for (auto &SelectorAndID : SelectorIDs)
4847 AllSelectors.push_back(SelectorAndID.first);
4848 for (auto &Selector : AllSelectors)
4849 SemaRef.updateOutOfDateSelector(Selector);
4850
4851 // Form the record of special types.
4852 RecordData SpecialTypes;
4853 AddTypeRef(Context.getRawCFConstantStringType(), SpecialTypes);
4854 AddTypeRef(Context.getFILEType(), SpecialTypes);
4855 AddTypeRef(Context.getjmp_bufType(), SpecialTypes);
4856 AddTypeRef(Context.getsigjmp_bufType(), SpecialTypes);
4857 AddTypeRef(Context.ObjCIdRedefinitionType, SpecialTypes);
4858 AddTypeRef(Context.ObjCClassRedefinitionType, SpecialTypes);
4859 AddTypeRef(Context.ObjCSelRedefinitionType, SpecialTypes);
4860 AddTypeRef(Context.getucontext_tType(), SpecialTypes);
4861
4862 if (Chain) {
4863 // Write the mapping information describing our module dependencies and how
4864 // each of those modules were mapped into our own offset/ID space, so that
4865 // the reader can build the appropriate mapping to its own offset/ID space.
4866 // The map consists solely of a blob with the following format:
4867 // *(module-kind:i8
4868 // module-name-len:i16 module-name:len*i8
4869 // source-location-offset:i32
4870 // identifier-id:i32
4871 // preprocessed-entity-id:i32
4872 // macro-definition-id:i32
4873 // submodule-id:i32
4874 // selector-id:i32
4875 // declaration-id:i32
4876 // c++-base-specifiers-id:i32
4877 // type-id:i32)
4878 //
4879 // module-kind is the ModuleKind enum value. If it is MK_PrebuiltModule or
4880 // MK_ExplicitModule, then the module-name is the module name. Otherwise,
4881 // it is the module file name.
4882 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4883 Abbrev->Add(BitCodeAbbrevOp(MODULE_OFFSET_MAP));
4884 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4885 unsigned ModuleOffsetMapAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
4886 SmallString<2048> Buffer;
4887 {
4888 llvm::raw_svector_ostream Out(Buffer);
4889 for (ModuleFile &M : Chain->ModuleMgr) {
4890 using namespace llvm::support;
4891
4892 endian::Writer<little> LE(Out);
4893 LE.write<uint8_t>(static_cast<uint8_t>(M.Kind));
4894 StringRef Name =
4895 M.Kind == MK_PrebuiltModule || M.Kind == MK_ExplicitModule
4896 ? M.ModuleName
4897 : M.FileName;
4898 LE.write<uint16_t>(Name.size());
4899 Out.write(Name.data(), Name.size());
4900
4901 // Note: if a base ID was uint max, it would not be possible to load
4902 // another module after it or have more than one entity inside it.
4903 uint32_t None = std::numeric_limits<uint32_t>::max();
4904
4905 auto writeBaseIDOrNone = [&](uint32_t BaseID, bool ShouldWrite) {
4906 assert(BaseID < std::numeric_limits<uint32_t>::max() && "base id too high")(static_cast <bool> (BaseID < std::numeric_limits<
uint32_t>::max() && "base id too high") ? void (0)
: __assert_fail ("BaseID < std::numeric_limits<uint32_t>::max() && \"base id too high\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4906, __extension__ __PRETTY_FUNCTION__))
;
4907 if (ShouldWrite)
4908 LE.write<uint32_t>(BaseID);
4909 else
4910 LE.write<uint32_t>(None);
4911 };
4912
4913 // These values should be unique within a chain, since they will be read
4914 // as keys into ContinuousRangeMaps.
4915 writeBaseIDOrNone(M.SLocEntryBaseOffset, M.LocalNumSLocEntries);
4916 writeBaseIDOrNone(M.BaseIdentifierID, M.LocalNumIdentifiers);
4917 writeBaseIDOrNone(M.BaseMacroID, M.LocalNumMacros);
4918 writeBaseIDOrNone(M.BasePreprocessedEntityID,
4919 M.NumPreprocessedEntities);
4920 writeBaseIDOrNone(M.BaseSubmoduleID, M.LocalNumSubmodules);
4921 writeBaseIDOrNone(M.BaseSelectorID, M.LocalNumSelectors);
4922 writeBaseIDOrNone(M.BaseDeclID, M.LocalNumDecls);
4923 writeBaseIDOrNone(M.BaseTypeIndex, M.LocalNumTypes);
4924 }
4925 }
4926 RecordData::value_type Record[] = {MODULE_OFFSET_MAP};
4927 Stream.EmitRecordWithBlob(ModuleOffsetMapAbbrev, Record,
4928 Buffer.data(), Buffer.size());
4929 }
4930
4931 RecordData DeclUpdatesOffsetsRecord;
4932
4933 // Keep writing types, declarations, and declaration update records
4934 // until we've emitted all of them.
4935 Stream.EnterSubblock(DECLTYPES_BLOCK_ID, /*bits for abbreviations*/5);
4936 WriteTypeAbbrevs();
4937 WriteDeclAbbrevs();
4938 do {
4939 WriteDeclUpdatesBlocks(DeclUpdatesOffsetsRecord);
4940 while (!DeclTypesToEmit.empty()) {
4941 DeclOrType DOT = DeclTypesToEmit.front();
4942 DeclTypesToEmit.pop();
4943 if (DOT.isType())
4944 WriteType(DOT.getType());
4945 else
4946 WriteDecl(Context, DOT.getDecl());
4947 }
4948 } while (!DeclUpdates.empty());
4949 Stream.ExitBlock();
4950
4951 DoneWritingDeclsAndTypes = true;
4952
4953 // These things can only be done once we've written out decls and types.
4954 WriteTypeDeclOffsets();
4955 if (!DeclUpdatesOffsetsRecord.empty())
4956 Stream.EmitRecord(DECL_UPDATE_OFFSETS, DeclUpdatesOffsetsRecord);
4957 WriteFileDeclIDsMap();
4958 WriteSourceManagerBlock(Context.getSourceManager(), PP);
4959 WriteComments();
4960 WritePreprocessor(PP, isModule);
4961 WriteHeaderSearch(PP.getHeaderSearchInfo());
4962 WriteSelectors(SemaRef);
4963 WriteReferencedSelectorsPool(SemaRef);
4964 WriteLateParsedTemplates(SemaRef);
4965 WriteIdentifierTable(PP, SemaRef.IdResolver, isModule);
4966 WriteFPPragmaOptions(SemaRef.getFPOptions());
4967 WriteOpenCLExtensions(SemaRef);
4968 WriteOpenCLExtensionTypes(SemaRef);
4969 WriteOpenCLExtensionDecls(SemaRef);
4970 WriteCUDAPragmas(SemaRef);
4971
4972 // If we're emitting a module, write out the submodule information.
4973 if (WritingModule)
4974 WriteSubmodules(WritingModule);
4975
4976 Stream.EmitRecord(SPECIAL_TYPES, SpecialTypes);
4977
4978 // Write the record containing external, unnamed definitions.
4979 if (!EagerlyDeserializedDecls.empty())
4980 Stream.EmitRecord(EAGERLY_DESERIALIZED_DECLS, EagerlyDeserializedDecls);
4981
4982 if (!ModularCodegenDecls.empty())
4983 Stream.EmitRecord(MODULAR_CODEGEN_DECLS, ModularCodegenDecls);
4984
4985 // Write the record containing tentative definitions.
4986 if (!TentativeDefinitions.empty())
4987 Stream.EmitRecord(TENTATIVE_DEFINITIONS, TentativeDefinitions);
4988
4989 // Write the record containing unused file scoped decls.
4990 if (!UnusedFileScopedDecls.empty())
4991 Stream.EmitRecord(UNUSED_FILESCOPED_DECLS, UnusedFileScopedDecls);
4992
4993 // Write the record containing weak undeclared identifiers.
4994 if (!WeakUndeclaredIdentifiers.empty())
4995 Stream.EmitRecord(WEAK_UNDECLARED_IDENTIFIERS,
4996 WeakUndeclaredIdentifiers);
4997
4998 // Write the record containing ext_vector type names.
4999 if (!ExtVectorDecls.empty())
5000 Stream.EmitRecord(EXT_VECTOR_DECLS, ExtVectorDecls);
5001
5002 // Write the record containing VTable uses information.
5003 if (!VTableUses.empty())
5004 Stream.EmitRecord(VTABLE_USES, VTableUses);
5005
5006 // Write the record containing potentially unused local typedefs.
5007 if (!UnusedLocalTypedefNameCandidates.empty())
5008 Stream.EmitRecord(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES,
5009 UnusedLocalTypedefNameCandidates);
5010
5011 // Write the record containing pending implicit instantiations.
5012 if (!PendingInstantiations.empty())
5013 Stream.EmitRecord(PENDING_IMPLICIT_INSTANTIATIONS, PendingInstantiations);
5014
5015 // Write the record containing declaration references of Sema.
5016 if (!SemaDeclRefs.empty())
5017 Stream.EmitRecord(SEMA_DECL_REFS, SemaDeclRefs);
5018
5019 // Write the record containing CUDA-specific declaration references.
5020 if (!CUDASpecialDeclRefs.empty())
5021 Stream.EmitRecord(CUDA_SPECIAL_DECL_REFS, CUDASpecialDeclRefs);
5022
5023 // Write the delegating constructors.
5024 if (!DelegatingCtorDecls.empty())
5025 Stream.EmitRecord(DELEGATING_CTORS, DelegatingCtorDecls);
5026
5027 // Write the known namespaces.
5028 if (!KnownNamespaces.empty())
5029 Stream.EmitRecord(KNOWN_NAMESPACES, KnownNamespaces);
5030
5031 // Write the undefined internal functions and variables, and inline functions.
5032 if (!UndefinedButUsed.empty())
5033 Stream.EmitRecord(UNDEFINED_BUT_USED, UndefinedButUsed);
5034
5035 if (!DeleteExprsToAnalyze.empty())
5036 Stream.EmitRecord(DELETE_EXPRS_TO_ANALYZE, DeleteExprsToAnalyze);
5037
5038 // Write the visible updates to DeclContexts.
5039 for (auto *DC : UpdatedDeclContexts)
5040 WriteDeclContextVisibleUpdate(DC);
5041
5042 if (!WritingModule) {
5043 // Write the submodules that were imported, if any.
5044 struct ModuleInfo {
5045 uint64_t ID;
5046 Module *M;
5047 ModuleInfo(uint64_t ID, Module *M) : ID(ID), M(M) {}
5048 };
5049 llvm::SmallVector<ModuleInfo, 64> Imports;
5050 for (const auto *I : Context.local_imports()) {
5051 assert(SubmoduleIDs.find(I->getImportedModule()) != SubmoduleIDs.end())(static_cast <bool> (SubmoduleIDs.find(I->getImportedModule
()) != SubmoduleIDs.end()) ? void (0) : __assert_fail ("SubmoduleIDs.find(I->getImportedModule()) != SubmoduleIDs.end()"
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5051, __extension__ __PRETTY_FUNCTION__))
;
5052 Imports.push_back(ModuleInfo(SubmoduleIDs[I->getImportedModule()],
5053 I->getImportedModule()));
5054 }
5055
5056 if (!Imports.empty()) {
5057 auto Cmp = [](const ModuleInfo &A, const ModuleInfo &B) {
5058 return A.ID < B.ID;
5059 };
5060 auto Eq = [](const ModuleInfo &A, const ModuleInfo &B) {
5061 return A.ID == B.ID;
5062 };
5063
5064 // Sort and deduplicate module IDs.
5065 std::sort(Imports.begin(), Imports.end(), Cmp);
5066 Imports.erase(std::unique(Imports.begin(), Imports.end(), Eq),
5067 Imports.end());
5068
5069 RecordData ImportedModules;
5070 for (const auto &Import : Imports) {
5071 ImportedModules.push_back(Import.ID);
5072 // FIXME: If the module has macros imported then later has declarations
5073 // imported, this location won't be the right one as a location for the
5074 // declaration imports.
5075 AddSourceLocation(PP.getModuleImportLoc(Import.M), ImportedModules);
5076 }
5077
5078 Stream.EmitRecord(IMPORTED_MODULES, ImportedModules);
5079 }
5080 }
5081
5082 WriteObjCCategories();
5083 if(!WritingModule) {
5084 WriteOptimizePragmaOptions(SemaRef);
5085 WriteMSStructPragmaOptions(SemaRef);
5086 WriteMSPointersToMembersPragmaOptions(SemaRef);
5087 }
5088 WritePackPragmaOptions(SemaRef);
5089
5090 // Some simple statistics
5091 RecordData::value_type Record[] = {
5092 NumStatements, NumMacros, NumLexicalDeclContexts, NumVisibleDeclContexts};
5093 Stream.EmitRecord(STATISTICS, Record);
5094 Stream.ExitBlock();
5095
5096 // Write the module file extension blocks.
5097 for (const auto &ExtWriter : ModuleFileExtensionWriters)
5098 WriteModuleFileExtension(SemaRef, *ExtWriter);
5099
5100 return writeUnhashedControlBlock(PP, Context);
5101}
5102
5103void ASTWriter::WriteDeclUpdatesBlocks(RecordDataImpl &OffsetsRecord) {
5104 if (DeclUpdates.empty())
5105 return;
5106
5107 DeclUpdateMap LocalUpdates;
5108 LocalUpdates.swap(DeclUpdates);
5109
5110 for (auto &DeclUpdate : LocalUpdates) {
5111 const Decl *D = DeclUpdate.first;
5112
5113 bool HasUpdatedBody = false;
5114 RecordData RecordData;
5115 ASTRecordWriter Record(*this, RecordData);
5116 for (auto &Update : DeclUpdate.second) {
5117 DeclUpdateKind Kind = (DeclUpdateKind)Update.getKind();
5118
5119 // An updated body is emitted last, so that the reader doesn't need
5120 // to skip over the lazy body to reach statements for other records.
5121 if (Kind == UPD_CXX_ADDED_FUNCTION_DEFINITION)
5122 HasUpdatedBody = true;
5123 else
5124 Record.push_back(Kind);
5125
5126 switch (Kind) {
5127 case UPD_CXX_ADDED_IMPLICIT_MEMBER:
5128 case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION:
5129 case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE:
5130 assert(Update.getDecl() && "no decl to add?")(static_cast <bool> (Update.getDecl() && "no decl to add?"
) ? void (0) : __assert_fail ("Update.getDecl() && \"no decl to add?\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5130, __extension__ __PRETTY_FUNCTION__))
;
5131 Record.push_back(GetDeclRef(Update.getDecl()));
5132 break;
5133
5134 case UPD_CXX_ADDED_FUNCTION_DEFINITION:
5135 break;
5136
5137 case UPD_CXX_INSTANTIATED_STATIC_DATA_MEMBER: {
5138 const VarDecl *VD = cast<VarDecl>(D);
5139 Record.AddSourceLocation(Update.getLoc());
5140 Record.push_back(VD->isInline());
5141 Record.push_back(VD->isInlineSpecified());
5142 if (VD->getInit()) {
5143 Record.push_back(!VD->isInitKnownICE() ? 1
5144 : (VD->isInitICE() ? 3 : 2));
5145 Record.AddStmt(const_cast<Expr*>(VD->getInit()));
5146 } else {
5147 Record.push_back(0);
5148 }
5149 break;
5150 }
5151
5152 case UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT:
5153 Record.AddStmt(const_cast<Expr *>(
5154 cast<ParmVarDecl>(Update.getDecl())->getDefaultArg()));
5155 break;
5156
5157 case UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER:
5158 Record.AddStmt(
5159 cast<FieldDecl>(Update.getDecl())->getInClassInitializer());
5160 break;
5161
5162 case UPD_CXX_INSTANTIATED_CLASS_DEFINITION: {
5163 auto *RD = cast<CXXRecordDecl>(D);
5164 UpdatedDeclContexts.insert(RD->getPrimaryContext());
5165 Record.AddCXXDefinitionData(RD);
5166 Record.AddOffset(WriteDeclContextLexicalBlock(
5167 *Context, const_cast<CXXRecordDecl *>(RD)));
5168
5169 // This state is sometimes updated by template instantiation, when we
5170 // switch from the specialization referring to the template declaration
5171 // to it referring to the template definition.
5172 if (auto *MSInfo = RD->getMemberSpecializationInfo()) {
5173 Record.push_back(MSInfo->getTemplateSpecializationKind());
5174 Record.AddSourceLocation(MSInfo->getPointOfInstantiation());
5175 } else {
5176 auto *Spec = cast<ClassTemplateSpecializationDecl>(RD);
5177 Record.push_back(Spec->getTemplateSpecializationKind());
5178 Record.AddSourceLocation(Spec->getPointOfInstantiation());
5179
5180 // The instantiation might have been resolved to a partial
5181 // specialization. If so, record which one.
5182 auto From = Spec->getInstantiatedFrom();
5183 if (auto PartialSpec =
5184 From.dyn_cast<ClassTemplatePartialSpecializationDecl*>()) {
5185 Record.push_back(true);
5186 Record.AddDeclRef(PartialSpec);
5187 Record.AddTemplateArgumentList(
5188 &Spec->getTemplateInstantiationArgs());
5189 } else {
5190 Record.push_back(false);
5191 }
5192 }
5193 Record.push_back(RD->getTagKind());
5194 Record.AddSourceLocation(RD->getLocation());
5195 Record.AddSourceLocation(RD->getLocStart());
5196 Record.AddSourceRange(RD->getBraceRange());
5197
5198 // Instantiation may change attributes; write them all out afresh.
5199 Record.push_back(D->hasAttrs());
5200 if (D->hasAttrs())
5201 Record.AddAttributes(D->getAttrs());
5202
5203 // FIXME: Ensure we don't get here for explicit instantiations.
5204 break;
5205 }
5206
5207 case UPD_CXX_RESOLVED_DTOR_DELETE:
5208 Record.AddDeclRef(Update.getDecl());
5209 Record.AddStmt(cast<CXXDestructorDecl>(D)->getOperatorDeleteThisArg());
5210 break;
5211
5212 case UPD_CXX_RESOLVED_EXCEPTION_SPEC:
5213 addExceptionSpec(
5214 cast<FunctionDecl>(D)->getType()->castAs<FunctionProtoType>(),
5215 Record);
5216 break;
5217
5218 case UPD_CXX_DEDUCED_RETURN_TYPE:
5219 Record.push_back(GetOrCreateTypeID(Update.getType()));
5220 break;
5221
5222 case UPD_DECL_MARKED_USED:
5223 break;
5224
5225 case UPD_MANGLING_NUMBER:
5226 case UPD_STATIC_LOCAL_NUMBER:
5227 Record.push_back(Update.getNumber());
5228 break;
5229
5230 case UPD_DECL_MARKED_OPENMP_THREADPRIVATE:
5231 Record.AddSourceRange(
5232 D->getAttr<OMPThreadPrivateDeclAttr>()->getRange());
5233 break;
5234
5235 case UPD_DECL_MARKED_OPENMP_DECLARETARGET:
5236 Record.AddSourceRange(
5237 D->getAttr<OMPDeclareTargetDeclAttr>()->getRange());
5238 break;
5239
5240 case UPD_DECL_EXPORTED:
5241 Record.push_back(getSubmoduleID(Update.getModule()));
5242 break;
5243
5244 case UPD_ADDED_ATTR_TO_RECORD:
5245 Record.AddAttributes(llvm::makeArrayRef(Update.getAttr()));
5246 break;
5247 }
5248 }
5249
5250 if (HasUpdatedBody) {
5251 const auto *Def = cast<FunctionDecl>(D);
5252 Record.push_back(UPD_CXX_ADDED_FUNCTION_DEFINITION);
5253 Record.push_back(Def->isInlined());
5254 Record.AddSourceLocation(Def->getInnerLocStart());
5255 Record.AddFunctionDefinition(Def);
5256 }
5257
5258 OffsetsRecord.push_back(GetDeclRef(D));
5259 OffsetsRecord.push_back(Record.Emit(DECL_UPDATES));
5260 }
5261}
5262
5263void ASTWriter::AddSourceLocation(SourceLocation Loc, RecordDataImpl &Record) {
5264 uint32_t Raw = Loc.getRawEncoding();
5265 Record.push_back((Raw << 1) | (Raw >> 31));
5266}
5267
5268void ASTWriter::AddSourceRange(SourceRange Range, RecordDataImpl &Record) {
5269 AddSourceLocation(Range.getBegin(), Record);
5270 AddSourceLocation(Range.getEnd(), Record);
5271}
5272
5273void ASTRecordWriter::AddAPInt(const llvm::APInt &Value) {
5274 Record->push_back(Value.getBitWidth());
5275 const uint64_t *Words = Value.getRawData();
5276 Record->append(Words, Words + Value.getNumWords());
5277}
5278
5279void ASTRecordWriter::AddAPSInt(const llvm::APSInt &Value) {
5280 Record->push_back(Value.isUnsigned());
5281 AddAPInt(Value);
5282}
5283
5284void ASTRecordWriter::AddAPFloat(const llvm::APFloat &Value) {
5285 AddAPInt(Value.bitcastToAPInt());
5286}
5287
5288void ASTWriter::AddIdentifierRef(const IdentifierInfo *II, RecordDataImpl &Record) {
5289 Record.push_back(getIdentifierRef(II));
5290}
5291
5292IdentID ASTWriter::getIdentifierRef(const IdentifierInfo *II) {
5293 if (!II)
5294 return 0;
5295
5296 IdentID &ID = IdentifierIDs[II];
5297 if (ID == 0)
5298 ID = NextIdentID++;
5299 return ID;
5300}
5301
5302MacroID ASTWriter::getMacroRef(MacroInfo *MI, const IdentifierInfo *Name) {
5303 // Don't emit builtin macros like __LINE__ to the AST file unless they
5304 // have been redefined by the header (in which case they are not
5305 // isBuiltinMacro).
5306 if (!MI || MI->isBuiltinMacro())
5307 return 0;
5308
5309 MacroID &ID = MacroIDs[MI];
5310 if (ID == 0) {
5311 ID = NextMacroID++;
5312 MacroInfoToEmitData Info = { Name, MI, ID };
5313 MacroInfosToEmit.push_back(Info);
5314 }
5315 return ID;
5316}
5317
5318MacroID ASTWriter::getMacroID(MacroInfo *MI) {
5319 if (!MI || MI->isBuiltinMacro())
5320 return 0;
5321
5322 assert(MacroIDs.find(MI) != MacroIDs.end() && "Macro not emitted!")(static_cast <bool> (MacroIDs.find(MI) != MacroIDs.end(
) && "Macro not emitted!") ? void (0) : __assert_fail
("MacroIDs.find(MI) != MacroIDs.end() && \"Macro not emitted!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5322, __extension__ __PRETTY_FUNCTION__))
;
5323 return MacroIDs[MI];
5324}
5325
5326uint64_t ASTWriter::getMacroDirectivesOffset(const IdentifierInfo *Name) {
5327 return IdentMacroDirectivesOffsetMap.lookup(Name);
5328}
5329
5330void ASTRecordWriter::AddSelectorRef(const Selector SelRef) {
5331 Record->push_back(Writer->getSelectorRef(SelRef));
5332}
5333
5334SelectorID ASTWriter::getSelectorRef(Selector Sel) {
5335 if (Sel.getAsOpaquePtr() == nullptr) {
5336 return 0;
5337 }
5338
5339 SelectorID SID = SelectorIDs[Sel];
5340 if (SID == 0 && Chain) {
5341 // This might trigger a ReadSelector callback, which will set the ID for
5342 // this selector.
5343 Chain->LoadSelector(Sel);
5344 SID = SelectorIDs[Sel];
5345 }
5346 if (SID == 0) {
5347 SID = NextSelectorID++;
5348 SelectorIDs[Sel] = SID;
5349 }
5350 return SID;
5351}
5352
5353void ASTRecordWriter::AddCXXTemporary(const CXXTemporary *Temp) {
5354 AddDeclRef(Temp->getDestructor());
5355}
5356
5357void ASTRecordWriter::AddTemplateArgumentLocInfo(
5358 TemplateArgument::ArgKind Kind, const TemplateArgumentLocInfo &Arg) {
5359 switch (Kind) {
5360 case TemplateArgument::Expression:
5361 AddStmt(Arg.getAsExpr());
5362 break;
5363 case TemplateArgument::Type:
5364 AddTypeSourceInfo(Arg.getAsTypeSourceInfo());
5365 break;
5366 case TemplateArgument::Template:
5367 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5368 AddSourceLocation(Arg.getTemplateNameLoc());
5369 break;
5370 case TemplateArgument::TemplateExpansion:
5371 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5372 AddSourceLocation(Arg.getTemplateNameLoc());
5373 AddSourceLocation(Arg.getTemplateEllipsisLoc());
5374 break;
5375 case TemplateArgument::Null:
5376 case TemplateArgument::Integral:
5377 case TemplateArgument::Declaration:
5378 case TemplateArgument::NullPtr:
5379 case TemplateArgument::Pack:
5380 // FIXME: Is this right?
5381 break;
5382 }
5383}
5384
5385void ASTRecordWriter::AddTemplateArgumentLoc(const TemplateArgumentLoc &Arg) {
5386 AddTemplateArgument(Arg.getArgument());
5387
5388 if (Arg.getArgument().getKind() == TemplateArgument::Expression) {
5389 bool InfoHasSameExpr
5390 = Arg.getArgument().getAsExpr() == Arg.getLocInfo().getAsExpr();
5391 Record->push_back(InfoHasSameExpr);
5392 if (InfoHasSameExpr)
5393 return; // Avoid storing the same expr twice.
5394 }
5395 AddTemplateArgumentLocInfo(Arg.getArgument().getKind(), Arg.getLocInfo());
5396}
5397
5398void ASTRecordWriter::AddTypeSourceInfo(TypeSourceInfo *TInfo) {
5399 if (!TInfo) {
5400 AddTypeRef(QualType());
5401 return;
5402 }
5403
5404 AddTypeLoc(TInfo->getTypeLoc());
5405}
5406
5407void ASTRecordWriter::AddTypeLoc(TypeLoc TL) {
5408 AddTypeRef(TL.getType());
5409
5410 TypeLocWriter TLW(*this);
5411 for (; !TL.isNull(); TL = TL.getNextTypeLoc())
5412 TLW.Visit(TL);
5413}
5414
5415void ASTWriter::AddTypeRef(QualType T, RecordDataImpl &Record) {
5416 Record.push_back(GetOrCreateTypeID(T));
5417}
5418
5419TypeID ASTWriter::GetOrCreateTypeID(QualType T) {
5420 assert(Context)(static_cast <bool> (Context) ? void (0) : __assert_fail
("Context", "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5420, __extension__ __PRETTY_FUNCTION__))
;
5421 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5422 if (T.isNull())
5423 return TypeIdx();
5424 assert(!T.getLocalFastQualifiers())(static_cast <bool> (!T.getLocalFastQualifiers()) ? void
(0) : __assert_fail ("!T.getLocalFastQualifiers()", "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5424, __extension__ __PRETTY_FUNCTION__))
;
5425
5426 TypeIdx &Idx = TypeIdxs[T];
5427 if (Idx.getIndex() == 0) {
5428 if (DoneWritingDeclsAndTypes) {
5429 assert(0 && "New type seen after serializing all the types to emit!")(static_cast <bool> (0 && "New type seen after serializing all the types to emit!"
) ? void (0) : __assert_fail ("0 && \"New type seen after serializing all the types to emit!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5429, __extension__ __PRETTY_FUNCTION__))
;
5430 return TypeIdx();
5431 }
5432
5433 // We haven't seen this type before. Assign it a new ID and put it
5434 // into the queue of types to emit.
5435 Idx = TypeIdx(NextTypeID++);
5436 DeclTypesToEmit.push(T);
5437 }
5438 return Idx;
5439 });
5440}
5441
5442TypeID ASTWriter::getTypeID(QualType T) const {
5443 assert(Context)(static_cast <bool> (Context) ? void (0) : __assert_fail
("Context", "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5443, __extension__ __PRETTY_FUNCTION__))
;
5444 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5445 if (T.isNull())
5446 return TypeIdx();
5447 assert(!T.getLocalFastQualifiers())(static_cast <bool> (!T.getLocalFastQualifiers()) ? void
(0) : __assert_fail ("!T.getLocalFastQualifiers()", "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5447, __extension__ __PRETTY_FUNCTION__))
;
5448
5449 TypeIdxMap::const_iterator I = TypeIdxs.find(T);
5450 assert(I != TypeIdxs.end() && "Type not emitted!")(static_cast <bool> (I != TypeIdxs.end() && "Type not emitted!"
) ? void (0) : __assert_fail ("I != TypeIdxs.end() && \"Type not emitted!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5450, __extension__ __PRETTY_FUNCTION__))
;
5451 return I->second;
5452 });
5453}
5454
5455void ASTWriter::AddDeclRef(const Decl *D, RecordDataImpl &Record) {
5456 Record.push_back(GetDeclRef(D));
5457}
5458
5459DeclID ASTWriter::GetDeclRef(const Decl *D) {
5460 assert(WritingAST && "Cannot request a declaration ID before AST writing")(static_cast <bool> (WritingAST && "Cannot request a declaration ID before AST writing"
) ? void (0) : __assert_fail ("WritingAST && \"Cannot request a declaration ID before AST writing\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5460, __extension__ __PRETTY_FUNCTION__))
;
5461
5462 if (!D) {
5463 return 0;
5464 }
5465
5466 // If D comes from an AST file, its declaration ID is already known and
5467 // fixed.
5468 if (D->isFromASTFile())
5469 return D->getGlobalID();
5470
5471 assert(!(reinterpret_cast<uintptr_t>(D) & 0x01) && "Invalid decl pointer")(static_cast <bool> (!(reinterpret_cast<uintptr_t>
(D) & 0x01) && "Invalid decl pointer") ? void (0)
: __assert_fail ("!(reinterpret_cast<uintptr_t>(D) & 0x01) && \"Invalid decl pointer\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5471, __extension__ __PRETTY_FUNCTION__))
;
5472 DeclID &ID = DeclIDs[D];
5473 if (ID == 0) {
5474 if (DoneWritingDeclsAndTypes) {
5475 assert(0 && "New decl seen after serializing all the decls to emit!")(static_cast <bool> (0 && "New decl seen after serializing all the decls to emit!"
) ? void (0) : __assert_fail ("0 && \"New decl seen after serializing all the decls to emit!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5475, __extension__ __PRETTY_FUNCTION__))
;
5476 return 0;
5477 }
5478
5479 // We haven't seen this declaration before. Give it a new ID and
5480 // enqueue it in the list of declarations to emit.
5481 ID = NextDeclID++;
5482 DeclTypesToEmit.push(const_cast<Decl *>(D));
5483 }
5484
5485 return ID;
5486}
5487
5488DeclID ASTWriter::getDeclID(const Decl *D) {
5489 if (!D)
5490 return 0;
5491
5492 // If D comes from an AST file, its declaration ID is already known and
5493 // fixed.
5494 if (D->isFromASTFile())
5495 return D->getGlobalID();
5496
5497 assert(DeclIDs.find(D) != DeclIDs.end() && "Declaration not emitted!")(static_cast <bool> (DeclIDs.find(D) != DeclIDs.end() &&
"Declaration not emitted!") ? void (0) : __assert_fail ("DeclIDs.find(D) != DeclIDs.end() && \"Declaration not emitted!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5497, __extension__ __PRETTY_FUNCTION__))
;
5498 return DeclIDs[D];
5499}
5500
5501void ASTWriter::associateDeclWithFile(const Decl *D, DeclID ID) {
5502 assert(ID)(static_cast <bool> (ID) ? void (0) : __assert_fail ("ID"
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5502, __extension__ __PRETTY_FUNCTION__))
;
5503 assert(D)(static_cast <bool> (D) ? void (0) : __assert_fail ("D"
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5503, __extension__ __PRETTY_FUNCTION__))
;
5504
5505 SourceLocation Loc = D->getLocation();
5506 if (Loc.isInvalid())
5507 return;
5508
5509 // We only keep track of the file-level declarations of each file.
5510 if (!D->getLexicalDeclContext()->isFileContext())
5511 return;
5512 // FIXME: ParmVarDecls that are part of a function type of a parameter of
5513 // a function/objc method, should not have TU as lexical context.
5514 if (isa<ParmVarDecl>(D))
5515 return;
5516
5517 SourceManager &SM = Context->getSourceManager();
5518 SourceLocation FileLoc = SM.getFileLoc(Loc);
5519 assert(SM.isLocalSourceLocation(FileLoc))(static_cast <bool> (SM.isLocalSourceLocation(FileLoc))
? void (0) : __assert_fail ("SM.isLocalSourceLocation(FileLoc)"
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5519, __extension__ __PRETTY_FUNCTION__))
;
5520 FileID FID;
5521 unsigned Offset;
5522 std::tie(FID, Offset) = SM.getDecomposedLoc(FileLoc);
5523 if (FID.isInvalid())
5524 return;
5525 assert(SM.getSLocEntry(FID).isFile())(static_cast <bool> (SM.getSLocEntry(FID).isFile()) ? void
(0) : __assert_fail ("SM.getSLocEntry(FID).isFile()", "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5525, __extension__ __PRETTY_FUNCTION__))
;
5526
5527 DeclIDInFileInfo *&Info = FileDeclIDs[FID];
5528 if (!Info)
5529 Info = new DeclIDInFileInfo();
5530
5531 std::pair<unsigned, serialization::DeclID> LocDecl(Offset, ID);
5532 LocDeclIDsTy &Decls = Info->DeclIDs;
5533
5534 if (Decls.empty() || Decls.back().first <= Offset) {
5535 Decls.push_back(LocDecl);
5536 return;
5537 }
5538
5539 LocDeclIDsTy::iterator I =
5540 std::upper_bound(Decls.begin(), Decls.end(), LocDecl, llvm::less_first());
5541
5542 Decls.insert(I, LocDecl);
5543}
5544
5545void ASTRecordWriter::AddDeclarationName(DeclarationName Name) {
5546 // FIXME: Emit a stable enum for NameKind. 0 = Identifier etc.
5547 Record->push_back(Name.getNameKind());
5548 switch (Name.getNameKind()) {
5549 case DeclarationName::Identifier:
5550 AddIdentifierRef(Name.getAsIdentifierInfo());
5551 break;
5552
5553 case DeclarationName::ObjCZeroArgSelector:
5554 case DeclarationName::ObjCOneArgSelector:
5555 case DeclarationName::ObjCMultiArgSelector:
5556 AddSelectorRef(Name.getObjCSelector());
5557 break;
5558
5559 case DeclarationName::CXXConstructorName:
5560 case DeclarationName::CXXDestructorName:
5561 case DeclarationName::CXXConversionFunctionName:
5562 AddTypeRef(Name.getCXXNameType());
5563 break;
5564
5565 case DeclarationName::CXXDeductionGuideName:
5566 AddDeclRef(Name.getCXXDeductionGuideTemplate());
5567 break;
5568
5569 case DeclarationName::CXXOperatorName:
5570 Record->push_back(Name.getCXXOverloadedOperator());
5571 break;
5572
5573 case DeclarationName::CXXLiteralOperatorName:
5574 AddIdentifierRef(Name.getCXXLiteralIdentifier());
5575 break;
5576
5577 case DeclarationName::CXXUsingDirective:
5578 // No extra data to emit
5579 break;
5580 }
5581}
5582
5583unsigned ASTWriter::getAnonymousDeclarationNumber(const NamedDecl *D) {
5584 assert(needsAnonymousDeclarationNumber(D) &&(static_cast <bool> (needsAnonymousDeclarationNumber(D)
&& "expected an anonymous declaration") ? void (0) :
__assert_fail ("needsAnonymousDeclarationNumber(D) && \"expected an anonymous declaration\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5585, __extension__ __PRETTY_FUNCTION__))
5585 "expected an anonymous declaration")(static_cast <bool> (needsAnonymousDeclarationNumber(D)
&& "expected an anonymous declaration") ? void (0) :
__assert_fail ("needsAnonymousDeclarationNumber(D) && \"expected an anonymous declaration\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5585, __extension__ __PRETTY_FUNCTION__))
;
5586
5587 // Number the anonymous declarations within this context, if we've not
5588 // already done so.
5589 auto It = AnonymousDeclarationNumbers.find(D);
5590 if (It == AnonymousDeclarationNumbers.end()) {
5591 auto *DC = D->getLexicalDeclContext();
5592 numberAnonymousDeclsWithin(DC, [&](const NamedDecl *ND, unsigned Number) {
5593 AnonymousDeclarationNumbers[ND] = Number;
5594 });
5595
5596 It = AnonymousDeclarationNumbers.find(D);
5597 assert(It != AnonymousDeclarationNumbers.end() &&(static_cast <bool> (It != AnonymousDeclarationNumbers.
end() && "declaration not found within its lexical context"
) ? void (0) : __assert_fail ("It != AnonymousDeclarationNumbers.end() && \"declaration not found within its lexical context\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5598, __extension__ __PRETTY_FUNCTION__))
5598 "declaration not found within its lexical context")(static_cast <bool> (It != AnonymousDeclarationNumbers.
end() && "declaration not found within its lexical context"
) ? void (0) : __assert_fail ("It != AnonymousDeclarationNumbers.end() && \"declaration not found within its lexical context\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5598, __extension__ __PRETTY_FUNCTION__))
;
5599 }
5600
5601 return It->second;
5602}
5603
5604void ASTRecordWriter::AddDeclarationNameLoc(const DeclarationNameLoc &DNLoc,
5605 DeclarationName Name) {
5606 switch (Name.getNameKind()) {
5607 case DeclarationName::CXXConstructorName:
5608 case DeclarationName::CXXDestructorName:
5609 case DeclarationName::CXXConversionFunctionName:
5610 AddTypeSourceInfo(DNLoc.NamedType.TInfo);
5611 break;
5612
5613 case DeclarationName::CXXOperatorName:
5614 AddSourceLocation(SourceLocation::getFromRawEncoding(
5615 DNLoc.CXXOperatorName.BeginOpNameLoc));
5616 AddSourceLocation(
5617 SourceLocation::getFromRawEncoding(DNLoc.CXXOperatorName.EndOpNameLoc));
5618 break;
5619
5620 case DeclarationName::CXXLiteralOperatorName:
5621 AddSourceLocation(SourceLocation::getFromRawEncoding(
5622 DNLoc.CXXLiteralOperatorName.OpNameLoc));
5623 break;
5624
5625 case DeclarationName::Identifier:
5626 case DeclarationName::ObjCZeroArgSelector:
5627 case DeclarationName::ObjCOneArgSelector:
5628 case DeclarationName::ObjCMultiArgSelector:
5629 case DeclarationName::CXXUsingDirective:
5630 case DeclarationName::CXXDeductionGuideName:
5631 break;
5632 }
5633}
5634
5635void ASTRecordWriter::AddDeclarationNameInfo(
5636 const DeclarationNameInfo &NameInfo) {
5637 AddDeclarationName(NameInfo.getName());
5638 AddSourceLocation(NameInfo.getLoc());
5639 AddDeclarationNameLoc(NameInfo.getInfo(), NameInfo.getName());
5640}
5641
5642void ASTRecordWriter::AddQualifierInfo(const QualifierInfo &Info) {
5643 AddNestedNameSpecifierLoc(Info.QualifierLoc);
5644 Record->push_back(Info.NumTemplParamLists);
5645 for (unsigned i = 0, e = Info.NumTemplParamLists; i != e; ++i)
5646 AddTemplateParameterList(Info.TemplParamLists[i]);
5647}
5648
5649void ASTRecordWriter::AddNestedNameSpecifier(NestedNameSpecifier *NNS) {
5650 // Nested name specifiers usually aren't too long. I think that 8 would
5651 // typically accommodate the vast majority.
5652 SmallVector<NestedNameSpecifier *, 8> NestedNames;
5653
5654 // Push each of the NNS's onto a stack for serialization in reverse order.
5655 while (NNS) {
5656 NestedNames.push_back(NNS);
5657 NNS = NNS->getPrefix();
5658 }
5659
5660 Record->push_back(NestedNames.size());
5661 while(!NestedNames.empty()) {
5662 NNS = NestedNames.pop_back_val();
5663 NestedNameSpecifier::SpecifierKind Kind = NNS->getKind();
5664 Record->push_back(Kind);
5665 switch (Kind) {
5666 case NestedNameSpecifier::Identifier:
5667 AddIdentifierRef(NNS->getAsIdentifier());
5668 break;
5669
5670 case NestedNameSpecifier::Namespace:
5671 AddDeclRef(NNS->getAsNamespace());
5672 break;
5673
5674 case NestedNameSpecifier::NamespaceAlias:
5675 AddDeclRef(NNS->getAsNamespaceAlias());
5676 break;
5677
5678 case NestedNameSpecifier::TypeSpec:
5679 case NestedNameSpecifier::TypeSpecWithTemplate:
5680 AddTypeRef(QualType(NNS->getAsType(), 0));
5681 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5682 break;
5683
5684 case NestedNameSpecifier::Global:
5685 // Don't need to write an associated value.
5686 break;
5687
5688 case NestedNameSpecifier::Super:
5689 AddDeclRef(NNS->getAsRecordDecl());
5690 break;
5691 }
5692 }
5693}
5694
5695void ASTRecordWriter::AddNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS) {
5696 // Nested name specifiers usually aren't too long. I think that 8 would
5697 // typically accommodate the vast majority.
5698 SmallVector<NestedNameSpecifierLoc , 8> NestedNames;
5699
5700 // Push each of the nested-name-specifiers's onto a stack for
5701 // serialization in reverse order.
5702 while (NNS) {
5703 NestedNames.push_back(NNS);
5704 NNS = NNS.getPrefix();
5705 }
5706
5707 Record->push_back(NestedNames.size());
5708 while(!NestedNames.empty()) {
5709 NNS = NestedNames.pop_back_val();
5710 NestedNameSpecifier::SpecifierKind Kind
5711 = NNS.getNestedNameSpecifier()->getKind();
5712 Record->push_back(Kind);
5713 switch (Kind) {
5714 case NestedNameSpecifier::Identifier:
5715 AddIdentifierRef(NNS.getNestedNameSpecifier()->getAsIdentifier());
5716 AddSourceRange(NNS.getLocalSourceRange());
5717 break;
5718
5719 case NestedNameSpecifier::Namespace:
5720 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespace());
5721 AddSourceRange(NNS.getLocalSourceRange());
5722 break;
5723
5724 case NestedNameSpecifier::NamespaceAlias:
5725 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespaceAlias());
5726 AddSourceRange(NNS.getLocalSourceRange());
5727 break;
5728
5729 case NestedNameSpecifier::TypeSpec:
5730 case NestedNameSpecifier::TypeSpecWithTemplate:
5731 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5732 AddTypeLoc(NNS.getTypeLoc());
5733 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5734 break;
5735
5736 case NestedNameSpecifier::Global:
5737 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5738 break;
5739
5740 case NestedNameSpecifier::Super:
5741 AddDeclRef(NNS.getNestedNameSpecifier()->getAsRecordDecl());
5742 AddSourceRange(NNS.getLocalSourceRange());
5743 break;
5744 }
5745 }
5746}
5747
5748void ASTRecordWriter::AddTemplateName(TemplateName Name) {
5749 TemplateName::NameKind Kind = Name.getKind();
5750 Record->push_back(Kind);
5751 switch (Kind) {
5752 case TemplateName::Template:
5753 AddDeclRef(Name.getAsTemplateDecl());
5754 break;
5755
5756 case TemplateName::OverloadedTemplate: {
5757 OverloadedTemplateStorage *OvT = Name.getAsOverloadedTemplate();
5758 Record->push_back(OvT->size());
5759 for (const auto &I : *OvT)
5760 AddDeclRef(I);
5761 break;
5762 }
5763
5764 case TemplateName::QualifiedTemplate: {
5765 QualifiedTemplateName *QualT = Name.getAsQualifiedTemplateName();
5766 AddNestedNameSpecifier(QualT->getQualifier());
5767 Record->push_back(QualT->hasTemplateKeyword());
5768 AddDeclRef(QualT->getTemplateDecl());
5769 break;
5770 }
5771
5772 case TemplateName::DependentTemplate: {
5773 DependentTemplateName *DepT = Name.getAsDependentTemplateName();
5774 AddNestedNameSpecifier(DepT->getQualifier());
5775 Record->push_back(DepT->isIdentifier());
5776 if (DepT->isIdentifier())
5777 AddIdentifierRef(DepT->getIdentifier());
5778 else
5779 Record->push_back(DepT->getOperator());
5780 break;
5781 }
5782
5783 case TemplateName::SubstTemplateTemplateParm: {
5784 SubstTemplateTemplateParmStorage *subst
5785 = Name.getAsSubstTemplateTemplateParm();
5786 AddDeclRef(subst->getParameter());
5787 AddTemplateName(subst->getReplacement());
5788 break;
5789 }
5790
5791 case TemplateName::SubstTemplateTemplateParmPack: {
5792 SubstTemplateTemplateParmPackStorage *SubstPack
5793 = Name.getAsSubstTemplateTemplateParmPack();
5794 AddDeclRef(SubstPack->getParameterPack());
5795 AddTemplateArgument(SubstPack->getArgumentPack());
5796 break;
5797 }
5798 }
5799}
5800
5801void ASTRecordWriter::AddTemplateArgument(const TemplateArgument &Arg) {
5802 Record->push_back(Arg.getKind());
5803 switch (Arg.getKind()) {
5804 case TemplateArgument::Null:
5805 break;
5806 case TemplateArgument::Type:
5807 AddTypeRef(Arg.getAsType());
5808 break;
5809 case TemplateArgument::Declaration:
5810 AddDeclRef(Arg.getAsDecl());
5811 AddTypeRef(Arg.getParamTypeForDecl());
5812 break;
5813 case TemplateArgument::NullPtr:
5814 AddTypeRef(Arg.getNullPtrType());
5815 break;
5816 case TemplateArgument::Integral:
5817 AddAPSInt(Arg.getAsIntegral());
5818 AddTypeRef(Arg.getIntegralType());
5819 break;
5820 case TemplateArgument::Template:
5821 AddTemplateName(Arg.getAsTemplateOrTemplatePattern());
5822 break;
5823 case TemplateArgument::TemplateExpansion:
5824 AddTemplateName(Arg.getAsTemplateOrTemplatePattern());
5825 if (Optional<unsigned> NumExpansions = Arg.getNumTemplateExpansions())
5826 Record->push_back(*NumExpansions + 1);
5827 else
5828 Record->push_back(0);
5829 break;
5830 case TemplateArgument::Expression:
5831 AddStmt(Arg.getAsExpr());
5832 break;
5833 case TemplateArgument::Pack:
5834 Record->push_back(Arg.pack_size());
5835 for (const auto &P : Arg.pack_elements())
5836 AddTemplateArgument(P);
5837 break;
5838 }
5839}
5840
5841void ASTRecordWriter::AddTemplateParameterList(
5842 const TemplateParameterList *TemplateParams) {
5843 assert(TemplateParams && "No TemplateParams!")(static_cast <bool> (TemplateParams && "No TemplateParams!"
) ? void (0) : __assert_fail ("TemplateParams && \"No TemplateParams!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5843, __extension__ __PRETTY_FUNCTION__))
;
5844 AddSourceLocation(TemplateParams->getTemplateLoc());
5845 AddSourceLocation(TemplateParams->getLAngleLoc());
5846 AddSourceLocation(TemplateParams->getRAngleLoc());
5847 // TODO: Concepts
5848 Record->push_back(TemplateParams->size());
5849 for (const auto &P : *TemplateParams)
5850 AddDeclRef(P);
5851}
5852
5853/// \brief Emit a template argument list.
5854void ASTRecordWriter::AddTemplateArgumentList(
5855 const TemplateArgumentList *TemplateArgs) {
5856 assert(TemplateArgs && "No TemplateArgs!")(static_cast <bool> (TemplateArgs && "No TemplateArgs!"
) ? void (0) : __assert_fail ("TemplateArgs && \"No TemplateArgs!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5856, __extension__ __PRETTY_FUNCTION__))
;
5857 Record->push_back(TemplateArgs->size());
5858 for (int i = 0, e = TemplateArgs->size(); i != e; ++i)
5859 AddTemplateArgument(TemplateArgs->get(i));
5860}
5861
5862void ASTRecordWriter::AddASTTemplateArgumentListInfo(
5863 const ASTTemplateArgumentListInfo *ASTTemplArgList) {
5864 assert(ASTTemplArgList && "No ASTTemplArgList!")(static_cast <bool> (ASTTemplArgList && "No ASTTemplArgList!"
) ? void (0) : __assert_fail ("ASTTemplArgList && \"No ASTTemplArgList!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5864, __extension__ __PRETTY_FUNCTION__))
;
5865 AddSourceLocation(ASTTemplArgList->LAngleLoc);
5866 AddSourceLocation(ASTTemplArgList->RAngleLoc);
5867 Record->push_back(ASTTemplArgList->NumTemplateArgs);
5868 const TemplateArgumentLoc *TemplArgs = ASTTemplArgList->getTemplateArgs();
5869 for (int i = 0, e = ASTTemplArgList->NumTemplateArgs; i != e; ++i)
5870 AddTemplateArgumentLoc(TemplArgs[i]);
5871}
5872
5873void ASTRecordWriter::AddUnresolvedSet(const ASTUnresolvedSet &Set) {
5874 Record->push_back(Set.size());
5875 for (ASTUnresolvedSet::const_iterator
5876 I = Set.begin(), E = Set.end(); I != E; ++I) {
5877 AddDeclRef(I.getDecl());
5878 Record->push_back(I.getAccess());
5879 }
5880}
5881
5882// FIXME: Move this out of the main ASTRecordWriter interface.
5883void ASTRecordWriter::AddCXXBaseSpecifier(const CXXBaseSpecifier &Base) {
5884 Record->push_back(Base.isVirtual());
5885 Record->push_back(Base.isBaseOfClass());
5886 Record->push_back(Base.getAccessSpecifierAsWritten());
5887 Record->push_back(Base.getInheritConstructors());
5888 AddTypeSourceInfo(Base.getTypeSourceInfo());
5889 AddSourceRange(Base.getSourceRange());
5890 AddSourceLocation(Base.isPackExpansion()? Base.getEllipsisLoc()
5891 : SourceLocation());
5892}
5893
5894static uint64_t EmitCXXBaseSpecifiers(ASTWriter &W,
5895 ArrayRef<CXXBaseSpecifier> Bases) {
5896 ASTWriter::RecordData Record;
5897 ASTRecordWriter Writer(W, Record);
5898 Writer.push_back(Bases.size());
5899
5900 for (auto &Base : Bases)
5901 Writer.AddCXXBaseSpecifier(Base);
5902
5903 return Writer.Emit(serialization::DECL_CXX_BASE_SPECIFIERS);
5904}
5905
5906// FIXME: Move this out of the main ASTRecordWriter interface.
5907void ASTRecordWriter::AddCXXBaseSpecifiers(ArrayRef<CXXBaseSpecifier> Bases) {
5908 AddOffset(EmitCXXBaseSpecifiers(*Writer, Bases));
5909}
5910
5911static uint64_t
5912EmitCXXCtorInitializers(ASTWriter &W,
5913 ArrayRef<CXXCtorInitializer *> CtorInits) {
5914 ASTWriter::RecordData Record;
5915 ASTRecordWriter Writer(W, Record);
5916 Writer.push_back(CtorInits.size());
5917
5918 for (auto *Init : CtorInits) {
5919 if (Init->isBaseInitializer()) {
5920 Writer.push_back(CTOR_INITIALIZER_BASE);
5921 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5922 Writer.push_back(Init->isBaseVirtual());
5923 } else if (Init->isDelegatingInitializer()) {
5924 Writer.push_back(CTOR_INITIALIZER_DELEGATING);
5925 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5926 } else if (Init->isMemberInitializer()){
5927 Writer.push_back(CTOR_INITIALIZER_MEMBER);
5928 Writer.AddDeclRef(Init->getMember());
5929 } else {
5930 Writer.push_back(CTOR_INITIALIZER_INDIRECT_MEMBER);
5931 Writer.AddDeclRef(Init->getIndirectMember());
5932 }
5933
5934 Writer.AddSourceLocation(Init->getMemberLocation());
5935 Writer.AddStmt(Init->getInit());
5936 Writer.AddSourceLocation(Init->getLParenLoc());
5937 Writer.AddSourceLocation(Init->getRParenLoc());
5938 Writer.push_back(Init->isWritten());
5939 if (Init->isWritten())
5940 Writer.push_back(Init->getSourceOrder());
5941 }
5942
5943 return Writer.Emit(serialization::DECL_CXX_CTOR_INITIALIZERS);
5944}
5945
5946// FIXME: Move this out of the main ASTRecordWriter interface.
5947void ASTRecordWriter::AddCXXCtorInitializers(
5948 ArrayRef<CXXCtorInitializer *> CtorInits) {
5949 AddOffset(EmitCXXCtorInitializers(*Writer, CtorInits));
5950}
5951
5952void ASTRecordWriter::AddCXXDefinitionData(const CXXRecordDecl *D) {
5953 auto &Data = D->data();
5954 Record->push_back(Data.IsLambda);
5955 Record->push_back(Data.UserDeclaredConstructor);
5956 Record->push_back(Data.UserDeclaredSpecialMembers);
5957 Record->push_back(Data.Aggregate);
5958 Record->push_back(Data.PlainOldData);
5959 Record->push_back(Data.Empty);
5960 Record->push_back(Data.Polymorphic);
5961 Record->push_back(Data.Abstract);
5962 Record->push_back(Data.IsStandardLayout);
5963 Record->push_back(Data.HasNoNonEmptyBases);
5964 Record->push_back(Data.HasPrivateFields);
5965 Record->push_back(Data.HasProtectedFields);
5966 Record->push_back(Data.HasPublicFields);
5967 Record->push_back(Data.HasMutableFields);
5968 Record->push_back(Data.HasVariantMembers);
5969 Record->push_back(Data.HasOnlyCMembers);
5970 Record->push_back(Data.HasInClassInitializer);
5971 Record->push_back(Data.HasUninitializedReferenceMember);
5972 Record->push_back(Data.HasUninitializedFields);
5973 Record->push_back(Data.HasInheritedConstructor);
5974 Record->push_back(Data.HasInheritedAssignment);
5975 Record->push_back(Data.NeedOverloadResolutionForCopyConstructor);
5976 Record->push_back(Data.NeedOverloadResolutionForMoveConstructor);
5977 Record->push_back(Data.NeedOverloadResolutionForMoveAssignment);
5978 Record->push_back(Data.NeedOverloadResolutionForDestructor);
5979 Record->push_back(Data.DefaultedCopyConstructorIsDeleted);
5980 Record->push_back(Data.DefaultedMoveConstructorIsDeleted);
5981 Record->push_back(Data.DefaultedMoveAssignmentIsDeleted);
5982 Record->push_back(Data.DefaultedDestructorIsDeleted);
5983 Record->push_back(Data.HasTrivialSpecialMembers);
5984 Record->push_back(Data.DeclaredNonTrivialSpecialMembers);
5985 Record->push_back(Data.HasIrrelevantDestructor);
5986 Record->push_back(Data.HasConstexprNonCopyMoveConstructor);
5987 Record->push_back(Data.HasDefaultedDefaultConstructor);
5988 Record->push_back(Data.CanPassInRegisters);
5989 Record->push_back(Data.DefaultedDefaultConstructorIsConstexpr);
5990 Record->push_back(Data.HasConstexprDefaultConstructor);
5991 Record->push_back(Data.HasNonLiteralTypeFieldsOrBases);
5992 Record->push_back(Data.ComputedVisibleConversions);
5993 Record->push_back(Data.UserProvidedDefaultConstructor);
5994 Record->push_back(Data.DeclaredSpecialMembers);
5995 Record->push_back(Data.ImplicitCopyConstructorCanHaveConstParamForVBase);
5996 Record->push_back(Data.ImplicitCopyConstructorCanHaveConstParamForNonVBase);
5997 Record->push_back(Data.ImplicitCopyAssignmentHasConstParam);
5998 Record->push_back(Data.HasDeclaredCopyConstructorWithConstParam);
5999 Record->push_back(Data.HasDeclaredCopyAssignmentWithConstParam);
6000
6001 // getODRHash will compute the ODRHash if it has not been previously computed.
6002 Record->push_back(D->getODRHash());
6003 bool ModulesDebugInfo = Writer->Context->getLangOpts().ModulesDebugInfo &&
6004 Writer->WritingModule && !D->isDependentType();
6005 Record->push_back(ModulesDebugInfo);
6006 if (ModulesDebugInfo)
6007 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(D));
6008
6009 // IsLambda bit is already saved.
6010
6011 Record->push_back(Data.NumBases);
6012 if (Data.NumBases > 0)
6013 AddCXXBaseSpecifiers(Data.bases());
6014
6015 // FIXME: Make VBases lazily computed when needed to avoid storing them.
6016 Record->push_back(Data.NumVBases);
6017 if (Data.NumVBases > 0)
6018 AddCXXBaseSpecifiers(Data.vbases());
6019
6020 AddUnresolvedSet(Data.Conversions.get(*Writer->Context));
6021 AddUnresolvedSet(Data.VisibleConversions.get(*Writer->Context));
6022 // Data.Definition is the owning decl, no need to write it.
6023 AddDeclRef(D->getFirstFriend());
6024
6025 // Add lambda-specific data.
6026 if (Data.IsLambda) {
6027 auto &Lambda = D->getLambdaData();
6028 Record->push_back(Lambda.Dependent);
6029 Record->push_back(Lambda.IsGenericLambda);
6030 Record->push_back(Lambda.CaptureDefault);
6031 Record->push_back(Lambda.NumCaptures);
6032 Record->push_back(Lambda.NumExplicitCaptures);
6033 Record->push_back(Lambda.ManglingNumber);
6034 AddDeclRef(D->getLambdaContextDecl());
6035 AddTypeSourceInfo(Lambda.MethodTyInfo);
6036 for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
6037 const LambdaCapture &Capture = Lambda.Captures[I];
6038 AddSourceLocation(Capture.getLocation());
6039 Record->push_back(Capture.isImplicit());
6040 Record->push_back(Capture.getCaptureKind());
6041 switch (Capture.getCaptureKind()) {
6042 case LCK_StarThis:
6043 case LCK_This:
6044 case LCK_VLAType:
6045 break;
6046 case LCK_ByCopy:
6047 case LCK_ByRef:
6048 VarDecl *Var =
6049 Capture.capturesVariable() ? Capture.getCapturedVar() : nullptr;
6050 AddDeclRef(Var);
6051 AddSourceLocation(Capture.isPackExpansion() ? Capture.getEllipsisLoc()
6052 : SourceLocation());
6053 break;
6054 }
6055 }
6056 }
6057}
6058
6059void ASTWriter::ReaderInitialized(ASTReader *Reader) {
6060 assert(Reader && "Cannot remove chain")(static_cast <bool> (Reader && "Cannot remove chain"
) ? void (0) : __assert_fail ("Reader && \"Cannot remove chain\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6060, __extension__ __PRETTY_FUNCTION__))
;
6061 assert((!Chain || Chain == Reader) && "Cannot replace chain")(static_cast <bool> ((!Chain || Chain == Reader) &&
"Cannot replace chain") ? void (0) : __assert_fail ("(!Chain || Chain == Reader) && \"Cannot replace chain\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6061, __extension__ __PRETTY_FUNCTION__))
;
6062 assert(FirstDeclID == NextDeclID &&(static_cast <bool> (FirstDeclID == NextDeclID &&
FirstTypeID == NextTypeID && FirstIdentID == NextIdentID
&& FirstMacroID == NextMacroID && FirstSubmoduleID
== NextSubmoduleID && FirstSelectorID == NextSelectorID
&& "Setting chain after writing has started.") ? void
(0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6068, __extension__ __PRETTY_FUNCTION__))
6063 FirstTypeID == NextTypeID &&(static_cast <bool> (FirstDeclID == NextDeclID &&
FirstTypeID == NextTypeID && FirstIdentID == NextIdentID
&& FirstMacroID == NextMacroID && FirstSubmoduleID
== NextSubmoduleID && FirstSelectorID == NextSelectorID
&& "Setting chain after writing has started.") ? void
(0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6068, __extension__ __PRETTY_FUNCTION__))
6064 FirstIdentID == NextIdentID &&(static_cast <bool> (FirstDeclID == NextDeclID &&
FirstTypeID == NextTypeID && FirstIdentID == NextIdentID
&& FirstMacroID == NextMacroID && FirstSubmoduleID
== NextSubmoduleID && FirstSelectorID == NextSelectorID
&& "Setting chain after writing has started.") ? void
(0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6068, __extension__ __PRETTY_FUNCTION__))
6065 FirstMacroID == NextMacroID &&(static_cast <bool> (FirstDeclID == NextDeclID &&
FirstTypeID == NextTypeID && FirstIdentID == NextIdentID
&& FirstMacroID == NextMacroID && FirstSubmoduleID
== NextSubmoduleID && FirstSelectorID == NextSelectorID
&& "Setting chain after writing has started.") ? void
(0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6068, __extension__ __PRETTY_FUNCTION__))
6066 FirstSubmoduleID == NextSubmoduleID &&(static_cast <bool> (FirstDeclID == NextDeclID &&
FirstTypeID == NextTypeID && FirstIdentID == NextIdentID
&& FirstMacroID == NextMacroID && FirstSubmoduleID
== NextSubmoduleID && FirstSelectorID == NextSelectorID
&& "Setting chain after writing has started.") ? void
(0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6068, __extension__ __PRETTY_FUNCTION__))
6067 FirstSelectorID == NextSelectorID &&(static_cast <bool> (FirstDeclID == NextDeclID &&
FirstTypeID == NextTypeID && FirstIdentID == NextIdentID
&& FirstMacroID == NextMacroID && FirstSubmoduleID
== NextSubmoduleID && FirstSelectorID == NextSelectorID
&& "Setting chain after writing has started.") ? void
(0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6068, __extension__ __PRETTY_FUNCTION__))
6068 "Setting chain after writing has started.")(static_cast <bool> (FirstDeclID == NextDeclID &&
FirstTypeID == NextTypeID && FirstIdentID == NextIdentID
&& FirstMacroID == NextMacroID && FirstSubmoduleID
== NextSubmoduleID && FirstSelectorID == NextSelectorID
&& "Setting chain after writing has started.") ? void
(0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6068, __extension__ __PRETTY_FUNCTION__))
;
6069
6070 Chain = Reader;
6071
6072 // Note, this will get called multiple times, once one the reader starts up
6073 // and again each time it's done reading a PCH or module.
6074 FirstDeclID = NUM_PREDEF_DECL_IDS + Chain->getTotalNumDecls();
6075 FirstTypeID = NUM_PREDEF_TYPE_IDS + Chain->getTotalNumTypes();
6076 FirstIdentID = NUM_PREDEF_IDENT_IDS + Chain->getTotalNumIdentifiers();
6077 FirstMacroID = NUM_PREDEF_MACRO_IDS + Chain->getTotalNumMacros();
6078 FirstSubmoduleID = NUM_PREDEF_SUBMODULE_IDS + Chain->getTotalNumSubmodules();
6079 FirstSelectorID = NUM_PREDEF_SELECTOR_IDS + Chain->getTotalNumSelectors();
6080 NextDeclID = FirstDeclID;
6081 NextTypeID = FirstTypeID;
6082 NextIdentID = FirstIdentID;
6083 NextMacroID = FirstMacroID;
6084 NextSelectorID = FirstSelectorID;
6085 NextSubmoduleID = FirstSubmoduleID;
6086}
6087
6088void ASTWriter::IdentifierRead(IdentID ID, IdentifierInfo *II) {
6089 // Always keep the highest ID. See \p TypeRead() for more information.
6090 IdentID &StoredID = IdentifierIDs[II];
6091 if (ID > StoredID)
6092 StoredID = ID;
6093}
6094
6095void ASTWriter::MacroRead(serialization::MacroID ID, MacroInfo *MI) {
6096 // Always keep the highest ID. See \p TypeRead() for more information.
6097 MacroID &StoredID = MacroIDs[MI];
6098 if (ID > StoredID)
6099 StoredID = ID;
6100}
6101
6102void ASTWriter::TypeRead(TypeIdx Idx, QualType T) {
6103 // Always take the highest-numbered type index. This copes with an interesting
6104 // case for chained AST writing where we schedule writing the type and then,
6105 // later, deserialize the type from another AST. In this case, we want to
6106 // keep the higher-numbered entry so that we can properly write it out to
6107 // the AST file.
6108 TypeIdx &StoredIdx = TypeIdxs[T];
6109 if (Idx.getIndex() >= StoredIdx.getIndex())
6110 StoredIdx = Idx;
6111}
6112
6113void ASTWriter::SelectorRead(SelectorID ID, Selector S) {
6114 // Always keep the highest ID. See \p TypeRead() for more information.
6115 SelectorID &StoredID = SelectorIDs[S];
6116 if (ID > StoredID)
6117 StoredID = ID;
6118}
6119
6120void ASTWriter::MacroDefinitionRead(serialization::PreprocessedEntityID ID,
6121 MacroDefinitionRecord *MD) {
6122 assert(MacroDefinitions.find(MD) == MacroDefinitions.end())(static_cast <bool> (MacroDefinitions.find(MD) == MacroDefinitions
.end()) ? void (0) : __assert_fail ("MacroDefinitions.find(MD) == MacroDefinitions.end()"
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6122, __extension__ __PRETTY_FUNCTION__))
;
6123 MacroDefinitions[MD] = ID;
6124}
6125
6126void ASTWriter::ModuleRead(serialization::SubmoduleID ID, Module *Mod) {
6127 assert(SubmoduleIDs.find(Mod) == SubmoduleIDs.end())(static_cast <bool> (SubmoduleIDs.find(Mod) == SubmoduleIDs
.end()) ? void (0) : __assert_fail ("SubmoduleIDs.find(Mod) == SubmoduleIDs.end()"
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6127, __extension__ __PRETTY_FUNCTION__))
;
6128 SubmoduleIDs[Mod] = ID;
6129}
6130
6131void ASTWriter::CompletedTagDefinition(const TagDecl *D) {
6132 if (Chain && Chain->isProcessingUpdateRecords()) return;
6133 assert(D->isCompleteDefinition())(static_cast <bool> (D->isCompleteDefinition()) ? void
(0) : __assert_fail ("D->isCompleteDefinition()", "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6133, __extension__ __PRETTY_FUNCTION__))
;
6134 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6134, __extension__ __PRETTY_FUNCTION__))
;
6135 if (auto *RD = dyn_cast<CXXRecordDecl>(D)) {
6136 // We are interested when a PCH decl is modified.
6137 if (RD->isFromASTFile()) {
6138 // A forward reference was mutated into a definition. Rewrite it.
6139 // FIXME: This happens during template instantiation, should we
6140 // have created a new definition decl instead ?
6141 assert(isTemplateInstantiation(RD->getTemplateSpecializationKind()) &&(static_cast <bool> (isTemplateInstantiation(RD->getTemplateSpecializationKind
()) && "completed a tag from another module but not by instantiation?"
) ? void (0) : __assert_fail ("isTemplateInstantiation(RD->getTemplateSpecializationKind()) && \"completed a tag from another module but not by instantiation?\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6142, __extension__ __PRETTY_FUNCTION__))
6142 "completed a tag from another module but not by instantiation?")(static_cast <bool> (isTemplateInstantiation(RD->getTemplateSpecializationKind
()) && "completed a tag from another module but not by instantiation?"
) ? void (0) : __assert_fail ("isTemplateInstantiation(RD->getTemplateSpecializationKind()) && \"completed a tag from another module but not by instantiation?\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6142, __extension__ __PRETTY_FUNCTION__))
;
6143 DeclUpdates[RD].push_back(
6144 DeclUpdate(UPD_CXX_INSTANTIATED_CLASS_DEFINITION));
6145 }
6146 }
6147}
6148
6149static bool isImportedDeclContext(ASTReader *Chain, const Decl *D) {
6150 if (D->isFromASTFile())
6151 return true;
6152
6153 // The predefined __va_list_tag struct is imported if we imported any decls.
6154 // FIXME: This is a gross hack.
6155 return D == D->getASTContext().getVaListTagDecl();
6156}
6157
6158void ASTWriter::AddedVisibleDecl(const DeclContext *DC, const Decl *D) {
6159 if (Chain && Chain->isProcessingUpdateRecords()) return;
6160 assert(DC->isLookupContext() &&(static_cast <bool> (DC->isLookupContext() &&
"Should not add lookup results to non-lookup contexts!") ? void
(0) : __assert_fail ("DC->isLookupContext() && \"Should not add lookup results to non-lookup contexts!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6161, __extension__ __PRETTY_FUNCTION__))
6161 "Should not add lookup results to non-lookup contexts!")(static_cast <bool> (DC->isLookupContext() &&
"Should not add lookup results to non-lookup contexts!") ? void
(0) : __assert_fail ("DC->isLookupContext() && \"Should not add lookup results to non-lookup contexts!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6161, __extension__ __PRETTY_FUNCTION__))
;
6162
6163 // TU is handled elsewhere.
6164 if (isa<TranslationUnitDecl>(DC))
6165 return;
6166
6167 // Namespaces are handled elsewhere, except for template instantiations of
6168 // FunctionTemplateDecls in namespaces. We are interested in cases where the
6169 // local instantiations are added to an imported context. Only happens when
6170 // adding ADL lookup candidates, for example templated friends.
6171 if (isa<NamespaceDecl>(DC) && D->getFriendObjectKind() == Decl::FOK_None &&
6172 !isa<FunctionTemplateDecl>(D))
6173 return;
6174
6175 // We're only interested in cases where a local declaration is added to an
6176 // imported context.
6177 if (D->isFromASTFile() || !isImportedDeclContext(Chain, cast<Decl>(DC)))
6178 return;
6179
6180 assert(DC == DC->getPrimaryContext() && "added to non-primary context")(static_cast <bool> (DC == DC->getPrimaryContext() &&
"added to non-primary context") ? void (0) : __assert_fail (
"DC == DC->getPrimaryContext() && \"added to non-primary context\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6180, __extension__ __PRETTY_FUNCTION__))
;
6181 assert(!getDefinitiveDeclContext(DC) && "DeclContext not definitive!")(static_cast <bool> (!getDefinitiveDeclContext(DC) &&
"DeclContext not definitive!") ? void (0) : __assert_fail ("!getDefinitiveDeclContext(DC) && \"DeclContext not definitive!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6181, __extension__ __PRETTY_FUNCTION__))
;
6182 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6182, __extension__ __PRETTY_FUNCTION__))
;
6183 if (UpdatedDeclContexts.insert(DC) && !cast<Decl>(DC)->isFromASTFile()) {
6184 // We're adding a visible declaration to a predefined decl context. Ensure
6185 // that we write out all of its lookup results so we don't get a nasty
6186 // surprise when we try to emit its lookup table.
6187 for (auto *Child : DC->decls())
6188 DeclsToEmitEvenIfUnreferenced.push_back(Child);
6189 }
6190 DeclsToEmitEvenIfUnreferenced.push_back(D);
6191}
6192
6193void ASTWriter::AddedCXXImplicitMember(const CXXRecordDecl *RD, const Decl *D) {
6194 if (Chain && Chain->isProcessingUpdateRecords()) return;
6195 assert(D->isImplicit())(static_cast <bool> (D->isImplicit()) ? void (0) : __assert_fail
("D->isImplicit()", "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6195, __extension__ __PRETTY_FUNCTION__))
;
6196
6197 // We're only interested in cases where a local declaration is added to an
6198 // imported context.
6199 if (D->isFromASTFile() || !isImportedDeclContext(Chain, RD))
6200 return;
6201
6202 if (!isa<CXXMethodDecl>(D))
6203 return;
6204
6205 // A decl coming from PCH was modified.
6206 assert(RD->isCompleteDefinition())(static_cast <bool> (RD->isCompleteDefinition()) ? void
(0) : __assert_fail ("RD->isCompleteDefinition()", "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6206, __extension__ __PRETTY_FUNCTION__))
;
6207 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6207, __extension__ __PRETTY_FUNCTION__))
;
6208 DeclUpdates[RD].push_back(DeclUpdate(UPD_CXX_ADDED_IMPLICIT_MEMBER, D));
6209}
6210
6211void ASTWriter::ResolvedExceptionSpec(const FunctionDecl *FD) {
6212 if (Chain && Chain->isProcessingUpdateRecords()) return;
6213 assert(!DoneWritingDeclsAndTypes && "Already done writing updates!")(static_cast <bool> (!DoneWritingDeclsAndTypes &&
"Already done writing updates!") ? void (0) : __assert_fail (
"!DoneWritingDeclsAndTypes && \"Already done writing updates!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6213, __extension__ __PRETTY_FUNCTION__))
;
6214 if (!Chain) return;
6215 Chain->forEachImportedKeyDecl(FD, [&](const Decl *D) {
6216 // If we don't already know the exception specification for this redecl
6217 // chain, add an update record for it.
6218 if (isUnresolvedExceptionSpec(cast<FunctionDecl>(D)
6219 ->getType()
6220 ->castAs<FunctionProtoType>()
6221 ->getExceptionSpecType()))
6222 DeclUpdates[D].push_back(UPD_CXX_RESOLVED_EXCEPTION_SPEC);
6223 });
6224}
6225
6226void ASTWriter::DeducedReturnType(const FunctionDecl *FD, QualType ReturnType) {
6227 if (Chain && Chain->isProcessingUpdateRecords()) return;
6228 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6228, __extension__ __PRETTY_FUNCTION__))
;
6229 if (!Chain) return;
6230 Chain->forEachImportedKeyDecl(FD, [&](const Decl *D) {
6231 DeclUpdates[D].push_back(
6232 DeclUpdate(UPD_CXX_DEDUCED_RETURN_TYPE, ReturnType));
6233 });
6234}
6235
6236void ASTWriter::ResolvedOperatorDelete(const CXXDestructorDecl *DD,
6237 const FunctionDecl *Delete,
6238 Expr *ThisArg) {
6239 if (Chain && Chain->isProcessingUpdateRecords()) return;
6240 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6240, __extension__ __PRETTY_FUNCTION__))
;
6241 assert(Delete && "Not given an operator delete")(static_cast <bool> (Delete && "Not given an operator delete"
) ? void (0) : __assert_fail ("Delete && \"Not given an operator delete\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6241, __extension__ __PRETTY_FUNCTION__))
;
6242 if (!Chain) return;
6243 Chain->forEachImportedKeyDecl(DD, [&](const Decl *D) {
6244 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_RESOLVED_DTOR_DELETE, Delete));
6245 });
6246}
6247
6248void ASTWriter::CompletedImplicitDefinition(const FunctionDecl *D) {
6249 if (Chain && Chain->isProcessingUpdateRecords()) return;
6250 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6250, __extension__ __PRETTY_FUNCTION__))
;
6251 if (!D->isFromASTFile())
6252 return; // Declaration not imported from PCH.
6253
6254 // Implicit function decl from a PCH was defined.
6255 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_FUNCTION_DEFINITION));
6256}
6257
6258void ASTWriter::FunctionDefinitionInstantiated(const FunctionDecl *D) {
6259 if (Chain && Chain->isProcessingUpdateRecords()) return;
6260 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6260, __extension__ __PRETTY_FUNCTION__))
;
6261 if (!D->isFromASTFile())
6262 return;
6263
6264 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_FUNCTION_DEFINITION));
6265}
6266
6267void ASTWriter::StaticDataMemberInstantiated(const VarDecl *D) {
6268 if (Chain && Chain->isProcessingUpdateRecords()) return;
6269 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6269, __extension__ __PRETTY_FUNCTION__))
;
6270 if (!D->isFromASTFile())
6271 return;
6272
6273 // Since the actual instantiation is delayed, this really means that we need
6274 // to update the instantiation location.
6275 DeclUpdates[D].push_back(
6276 DeclUpdate(UPD_CXX_INSTANTIATED_STATIC_DATA_MEMBER,
6277 D->getMemberSpecializationInfo()->getPointOfInstantiation()));
6278}
6279
6280void ASTWriter::DefaultArgumentInstantiated(const ParmVarDecl *D) {
6281 if (Chain && Chain->isProcessingUpdateRecords()) return;
6282 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6282, __extension__ __PRETTY_FUNCTION__))
;
6283 if (!D->isFromASTFile())
6284 return;
6285
6286 DeclUpdates[D].push_back(
6287 DeclUpdate(UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT, D));
6288}
6289
6290void ASTWriter::DefaultMemberInitializerInstantiated(const FieldDecl *D) {
6291 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6291, __extension__ __PRETTY_FUNCTION__))
;
6292 if (!D->isFromASTFile())
6293 return;
6294
6295 DeclUpdates[D].push_back(
6296 DeclUpdate(UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER, D));
6297}
6298
6299void ASTWriter::AddedObjCCategoryToInterface(const ObjCCategoryDecl *CatD,
6300 const ObjCInterfaceDecl *IFD) {
6301 if (Chain && Chain->isProcessingUpdateRecords()) return;
6302 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6302, __extension__ __PRETTY_FUNCTION__))
;
6303 if (!IFD->isFromASTFile())
6304 return; // Declaration not imported from PCH.
6305
6306 assert(IFD->getDefinition() && "Category on a class without a definition?")(static_cast <bool> (IFD->getDefinition() &&
"Category on a class without a definition?") ? void (0) : __assert_fail
("IFD->getDefinition() && \"Category on a class without a definition?\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6306, __extension__ __PRETTY_FUNCTION__))
;
6307 ObjCClassesWithCategories.insert(
6308 const_cast<ObjCInterfaceDecl *>(IFD->getDefinition()));
6309}
6310
6311void ASTWriter::DeclarationMarkedUsed(const Decl *D) {
6312 if (Chain && Chain->isProcessingUpdateRecords()) return;
6313 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6313, __extension__ __PRETTY_FUNCTION__))
;
6314
6315 // If there is *any* declaration of the entity that's not from an AST file,
6316 // we can skip writing the update record. We make sure that isUsed() triggers
6317 // completion of the redeclaration chain of the entity.
6318 for (auto Prev = D->getMostRecentDecl(); Prev; Prev = Prev->getPreviousDecl())
6319 if (IsLocalDecl(Prev))
6320 return;
6321
6322 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_MARKED_USED));
6323}
6324
6325void ASTWriter::DeclarationMarkedOpenMPThreadPrivate(const Decl *D) {
6326 if (Chain && Chain->isProcessingUpdateRecords()) return;
6327 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6327, __extension__ __PRETTY_FUNCTION__))
;
6328 if (!D->isFromASTFile())
6329 return;
6330
6331 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_MARKED_OPENMP_THREADPRIVATE));
6332}
6333
6334void ASTWriter::DeclarationMarkedOpenMPDeclareTarget(const Decl *D,
6335 const Attr *Attr) {
6336 if (Chain && Chain->isProcessingUpdateRecords()) return;
6337 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6337, __extension__ __PRETTY_FUNCTION__))
;
6338 if (!D->isFromASTFile())
6339 return;
6340
6341 DeclUpdates[D].push_back(
6342 DeclUpdate(UPD_DECL_MARKED_OPENMP_DECLARETARGET, Attr));
6343}
6344
6345void ASTWriter::RedefinedHiddenDefinition(const NamedDecl *D, Module *M) {
6346 if (Chain && Chain->isProcessingUpdateRecords()) return;
6347 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6347, __extension__ __PRETTY_FUNCTION__))
;
6348 assert(D->isHidden() && "expected a hidden declaration")(static_cast <bool> (D->isHidden() && "expected a hidden declaration"
) ? void (0) : __assert_fail ("D->isHidden() && \"expected a hidden declaration\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6348, __extension__ __PRETTY_FUNCTION__))
;
6349 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_EXPORTED, M));
6350}
6351
6352void ASTWriter::AddedAttributeToRecord(const Attr *Attr,
6353 const RecordDecl *Record) {
6354 if (Chain && Chain->isProcessingUpdateRecords()) return;
6355 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6355, __extension__ __PRETTY_FUNCTION__))
;
6356 if (!Record->isFromASTFile())
6357 return;
6358 DeclUpdates[Record].push_back(DeclUpdate(UPD_ADDED_ATTR_TO_RECORD, Attr));
6359}
6360
6361void ASTWriter::AddedCXXTemplateSpecialization(
6362 const ClassTemplateDecl *TD, const ClassTemplateSpecializationDecl *D) {
6363 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6363, __extension__ __PRETTY_FUNCTION__))
;
6364
6365 if (!TD->getFirstDecl()->isFromASTFile())
6366 return;
6367 if (Chain && Chain->isProcessingUpdateRecords())
6368 return;
6369
6370 DeclsToEmitEvenIfUnreferenced.push_back(D);
6371}
6372
6373void ASTWriter::AddedCXXTemplateSpecialization(
6374 const VarTemplateDecl *TD, const VarTemplateSpecializationDecl *D) {
6375 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6375, __extension__ __PRETTY_FUNCTION__))
;
6376
6377 if (!TD->getFirstDecl()->isFromASTFile())
6378 return;
6379 if (Chain && Chain->isProcessingUpdateRecords())
6380 return;
6381
6382 DeclsToEmitEvenIfUnreferenced.push_back(D);
6383}
6384
6385void ASTWriter::AddedCXXTemplateSpecialization(const FunctionTemplateDecl *TD,
6386 const FunctionDecl *D) {
6387 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6387, __extension__ __PRETTY_FUNCTION__))
;
6388
6389 if (!TD->getFirstDecl()->isFromASTFile())
6390 return;
6391 if (Chain && Chain->isProcessingUpdateRecords())
6392 return;
6393
6394 DeclsToEmitEvenIfUnreferenced.push_back(D);
6395}

/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h

1//===- BitstreamWriter.h - Low-level bitstream writer interface -*- C++ -*-===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This header defines the BitstreamWriter class. This class can be used to
11// write an arbitrary bitstream, regardless of its contents.
12//
13//===----------------------------------------------------------------------===//
14
15#ifndef LLVM_BITCODE_BITSTREAMWRITER_H
16#define LLVM_BITCODE_BITSTREAMWRITER_H
17
18#include "llvm/ADT/ArrayRef.h"
19#include "llvm/ADT/Optional.h"
20#include "llvm/ADT/SmallVector.h"
21#include "llvm/ADT/StringRef.h"
22#include "llvm/Bitcode/BitCodes.h"
23#include "llvm/Support/Endian.h"
24#include <vector>
25
26namespace llvm {
27
28class BitstreamWriter {
29 SmallVectorImpl<char> &Out;
30
31 /// CurBit - Always between 0 and 31 inclusive, specifies the next bit to use.
32 unsigned CurBit;
33
34 /// CurValue - The current value. Only bits < CurBit are valid.
35 uint32_t CurValue;
36
37 /// CurCodeSize - This is the declared size of code values used for the
38 /// current block, in bits.
39 unsigned CurCodeSize;
40
41 /// BlockInfoCurBID - When emitting a BLOCKINFO_BLOCK, this is the currently
42 /// selected BLOCK ID.
43 unsigned BlockInfoCurBID;
44
45 /// CurAbbrevs - Abbrevs installed at in this block.
46 std::vector<std::shared_ptr<BitCodeAbbrev>> CurAbbrevs;
47
48 struct Block {
49 unsigned PrevCodeSize;
50 size_t StartSizeWord;
51 std::vector<std::shared_ptr<BitCodeAbbrev>> PrevAbbrevs;
52 Block(unsigned PCS, size_t SSW) : PrevCodeSize(PCS), StartSizeWord(SSW) {}
53 };
54
55 /// BlockScope - This tracks the current blocks that we have entered.
56 std::vector<Block> BlockScope;
57
58 /// BlockInfo - This contains information emitted to BLOCKINFO_BLOCK blocks.
59 /// These describe abbreviations that all blocks of the specified ID inherit.
60 struct BlockInfo {
61 unsigned BlockID;
62 std::vector<std::shared_ptr<BitCodeAbbrev>> Abbrevs;
63 };
64 std::vector<BlockInfo> BlockInfoRecords;
65
66 void WriteByte(unsigned char Value) {
67 Out.push_back(Value);
68 }
69
70 void WriteWord(unsigned Value) {
71 Value = support::endian::byte_swap<uint32_t, support::little>(Value);
72 Out.append(reinterpret_cast<const char *>(&Value),
73 reinterpret_cast<const char *>(&Value + 1));
74 }
75
76 size_t GetBufferOffset() const { return Out.size(); }
77
78 size_t GetWordIndex() const {
79 size_t Offset = GetBufferOffset();
80 assert((Offset & 3) == 0 && "Not 32-bit aligned")(static_cast <bool> ((Offset & 3) == 0 && "Not 32-bit aligned"
) ? void (0) : __assert_fail ("(Offset & 3) == 0 && \"Not 32-bit aligned\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 80, __extension__ __PRETTY_FUNCTION__))
;
81 return Offset / 4;
82 }
83
84public:
85 explicit BitstreamWriter(SmallVectorImpl<char> &O)
86 : Out(O), CurBit(0), CurValue(0), CurCodeSize(2) {}
87
88 ~BitstreamWriter() {
89 assert(CurBit == 0 && "Unflushed data remaining")(static_cast <bool> (CurBit == 0 && "Unflushed data remaining"
) ? void (0) : __assert_fail ("CurBit == 0 && \"Unflushed data remaining\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 89, __extension__ __PRETTY_FUNCTION__))
;
90 assert(BlockScope.empty() && CurAbbrevs.empty() && "Block imbalance")(static_cast <bool> (BlockScope.empty() && CurAbbrevs
.empty() && "Block imbalance") ? void (0) : __assert_fail
("BlockScope.empty() && CurAbbrevs.empty() && \"Block imbalance\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 90, __extension__ __PRETTY_FUNCTION__))
;
91 }
92
93 /// \brief Retrieve the current position in the stream, in bits.
94 uint64_t GetCurrentBitNo() const { return GetBufferOffset() * 8 + CurBit; }
95
96 /// \brief Retrieve the number of bits currently used to encode an abbrev ID.
97 unsigned GetAbbrevIDWidth() const { return CurCodeSize; }
98
99 //===--------------------------------------------------------------------===//
100 // Basic Primitives for emitting bits to the stream.
101 //===--------------------------------------------------------------------===//
102
103 /// Backpatch a 32-bit word in the output at the given bit offset
104 /// with the specified value.
105 void BackpatchWord(uint64_t BitNo, unsigned NewWord) {
106 using namespace llvm::support;
107 unsigned ByteNo = BitNo / 8;
108 assert((!endian::readAtBitAlignment<uint32_t, little, unaligned>((static_cast <bool> ((!endian::readAtBitAlignment<uint32_t
, little, unaligned>( &Out[ByteNo], BitNo & 7)) &&
"Expected to be patching over 0-value placeholders") ? void (
0) : __assert_fail ("(!endian::readAtBitAlignment<uint32_t, little, unaligned>( &Out[ByteNo], BitNo & 7)) && \"Expected to be patching over 0-value placeholders\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 110, __extension__ __PRETTY_FUNCTION__))
109 &Out[ByteNo], BitNo & 7)) &&(static_cast <bool> ((!endian::readAtBitAlignment<uint32_t
, little, unaligned>( &Out[ByteNo], BitNo & 7)) &&
"Expected to be patching over 0-value placeholders") ? void (
0) : __assert_fail ("(!endian::readAtBitAlignment<uint32_t, little, unaligned>( &Out[ByteNo], BitNo & 7)) && \"Expected to be patching over 0-value placeholders\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 110, __extension__ __PRETTY_FUNCTION__))
110 "Expected to be patching over 0-value placeholders")(static_cast <bool> ((!endian::readAtBitAlignment<uint32_t
, little, unaligned>( &Out[ByteNo], BitNo & 7)) &&
"Expected to be patching over 0-value placeholders") ? void (
0) : __assert_fail ("(!endian::readAtBitAlignment<uint32_t, little, unaligned>( &Out[ByteNo], BitNo & 7)) && \"Expected to be patching over 0-value placeholders\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 110, __extension__ __PRETTY_FUNCTION__))
;
111 endian::writeAtBitAlignment<uint32_t, little, unaligned>(
112 &Out[ByteNo], NewWord, BitNo & 7);
113 }
114
115 void BackpatchWord64(uint64_t BitNo, uint64_t Val) {
116 BackpatchWord(BitNo, (uint32_t)Val);
117 BackpatchWord(BitNo + 32, (uint32_t)(Val >> 32));
118 }
119
120 void Emit(uint32_t Val, unsigned NumBits) {
121 assert(NumBits && NumBits <= 32 && "Invalid value size!")(static_cast <bool> (NumBits && NumBits <= 32
&& "Invalid value size!") ? void (0) : __assert_fail
("NumBits && NumBits <= 32 && \"Invalid value size!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 121, __extension__ __PRETTY_FUNCTION__))
;
122 assert((Val & ~(~0U >> (32-NumBits))) == 0 && "High bits set!")(static_cast <bool> ((Val & ~(~0U >> (32-NumBits
))) == 0 && "High bits set!") ? void (0) : __assert_fail
("(Val & ~(~0U >> (32-NumBits))) == 0 && \"High bits set!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 122, __extension__ __PRETTY_FUNCTION__))
;
123 CurValue |= Val << CurBit;
124 if (CurBit + NumBits < 32) {
125 CurBit += NumBits;
126 return;
127 }
128
129 // Add the current word.
130 WriteWord(CurValue);
131
132 if (CurBit)
133 CurValue = Val >> (32-CurBit);
134 else
135 CurValue = 0;
136 CurBit = (CurBit+NumBits) & 31;
137 }
138
139 void FlushToWord() {
140 if (CurBit) {
141 WriteWord(CurValue);
142 CurBit = 0;
143 CurValue = 0;
144 }
145 }
146
147 void EmitVBR(uint32_t Val, unsigned NumBits) {
148 assert(NumBits <= 32 && "Too many bits to emit!")(static_cast <bool> (NumBits <= 32 && "Too many bits to emit!"
) ? void (0) : __assert_fail ("NumBits <= 32 && \"Too many bits to emit!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 148, __extension__ __PRETTY_FUNCTION__))
;
149 uint32_t Threshold = 1U << (NumBits-1);
150
151 // Emit the bits with VBR encoding, NumBits-1 bits at a time.
152 while (Val >= Threshold) {
153 Emit((Val & ((1 << (NumBits-1))-1)) | (1 << (NumBits-1)), NumBits);
154 Val >>= NumBits-1;
155 }
156
157 Emit(Val, NumBits);
158 }
159
160 void EmitVBR64(uint64_t Val, unsigned NumBits) {
161 assert(NumBits <= 32 && "Too many bits to emit!")(static_cast <bool> (NumBits <= 32 && "Too many bits to emit!"
) ? void (0) : __assert_fail ("NumBits <= 32 && \"Too many bits to emit!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 161, __extension__ __PRETTY_FUNCTION__))
;
162 if ((uint32_t)Val == Val)
163 return EmitVBR((uint32_t)Val, NumBits);
164
165 uint32_t Threshold = 1U << (NumBits-1);
166
167 // Emit the bits with VBR encoding, NumBits-1 bits at a time.
168 while (Val >= Threshold) {
169 Emit(((uint32_t)Val & ((1 << (NumBits-1))-1)) |
170 (1 << (NumBits-1)), NumBits);
171 Val >>= NumBits-1;
172 }
173
174 Emit((uint32_t)Val, NumBits);
175 }
176
177 /// EmitCode - Emit the specified code.
178 void EmitCode(unsigned Val) {
179 Emit(Val, CurCodeSize);
180 }
181
182 //===--------------------------------------------------------------------===//
183 // Block Manipulation
184 //===--------------------------------------------------------------------===//
185
186 /// getBlockInfo - If there is block info for the specified ID, return it,
187 /// otherwise return null.
188 BlockInfo *getBlockInfo(unsigned BlockID) {
189 // Common case, the most recent entry matches BlockID.
190 if (!BlockInfoRecords.empty() && BlockInfoRecords.back().BlockID == BlockID)
191 return &BlockInfoRecords.back();
192
193 for (unsigned i = 0, e = static_cast<unsigned>(BlockInfoRecords.size());
194 i != e; ++i)
195 if (BlockInfoRecords[i].BlockID == BlockID)
196 return &BlockInfoRecords[i];
197 return nullptr;
198 }
199
200 void EnterSubblock(unsigned BlockID, unsigned CodeLen) {
201 // Block header:
202 // [ENTER_SUBBLOCK, blockid, newcodelen, <align4bytes>, blocklen]
203 EmitCode(bitc::ENTER_SUBBLOCK);
204 EmitVBR(BlockID, bitc::BlockIDWidth);
205 EmitVBR(CodeLen, bitc::CodeLenWidth);
206 FlushToWord();
207
208 size_t BlockSizeWordIndex = GetWordIndex();
209 unsigned OldCodeSize = CurCodeSize;
210
211 // Emit a placeholder, which will be replaced when the block is popped.
212 Emit(0, bitc::BlockSizeWidth);
213
214 CurCodeSize = CodeLen;
215
216 // Push the outer block's abbrev set onto the stack, start out with an
217 // empty abbrev set.
218 BlockScope.emplace_back(OldCodeSize, BlockSizeWordIndex);
219 BlockScope.back().PrevAbbrevs.swap(CurAbbrevs);
220
221 // If there is a blockinfo for this BlockID, add all the predefined abbrevs
222 // to the abbrev list.
223 if (BlockInfo *Info = getBlockInfo(BlockID)) {
224 CurAbbrevs.insert(CurAbbrevs.end(), Info->Abbrevs.begin(),
225 Info->Abbrevs.end());
226 }
227 }
228
229 void ExitBlock() {
230 assert(!BlockScope.empty() && "Block scope imbalance!")(static_cast <bool> (!BlockScope.empty() && "Block scope imbalance!"
) ? void (0) : __assert_fail ("!BlockScope.empty() && \"Block scope imbalance!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 230, __extension__ __PRETTY_FUNCTION__))
;
231 const Block &B = BlockScope.back();
232
233 // Block tail:
234 // [END_BLOCK, <align4bytes>]
235 EmitCode(bitc::END_BLOCK);
236 FlushToWord();
237
238 // Compute the size of the block, in words, not counting the size field.
239 size_t SizeInWords = GetWordIndex() - B.StartSizeWord - 1;
240 uint64_t BitNo = uint64_t(B.StartSizeWord) * 32;
241
242 // Update the block size field in the header of this sub-block.
243 BackpatchWord(BitNo, SizeInWords);
244
245 // Restore the inner block's code size and abbrev table.
246 CurCodeSize = B.PrevCodeSize;
247 CurAbbrevs = std::move(B.PrevAbbrevs);
248 BlockScope.pop_back();
249 }
250
251 //===--------------------------------------------------------------------===//
252 // Record Emission
253 //===--------------------------------------------------------------------===//
254
255private:
256 /// EmitAbbreviatedLiteral - Emit a literal value according to its abbrev
257 /// record. This is a no-op, since the abbrev specifies the literal to use.
258 template<typename uintty>
259 void EmitAbbreviatedLiteral(const BitCodeAbbrevOp &Op, uintty V) {
260 assert(Op.isLiteral() && "Not a literal")(static_cast <bool> (Op.isLiteral() && "Not a literal"
) ? void (0) : __assert_fail ("Op.isLiteral() && \"Not a literal\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 260, __extension__ __PRETTY_FUNCTION__))
;
261 // If the abbrev specifies the literal value to use, don't emit
262 // anything.
263 assert(V == Op.getLiteralValue() &&(static_cast <bool> (V == Op.getLiteralValue() &&
"Invalid abbrev for record!") ? void (0) : __assert_fail ("V == Op.getLiteralValue() && \"Invalid abbrev for record!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 264, __extension__ __PRETTY_FUNCTION__))
264 "Invalid abbrev for record!")(static_cast <bool> (V == Op.getLiteralValue() &&
"Invalid abbrev for record!") ? void (0) : __assert_fail ("V == Op.getLiteralValue() && \"Invalid abbrev for record!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 264, __extension__ __PRETTY_FUNCTION__))
;
265 }
266
267 /// EmitAbbreviatedField - Emit a single scalar field value with the specified
268 /// encoding.
269 template<typename uintty>
270 void EmitAbbreviatedField(const BitCodeAbbrevOp &Op, uintty V) {
271 assert(!Op.isLiteral() && "Literals should use EmitAbbreviatedLiteral!")(static_cast <bool> (!Op.isLiteral() && "Literals should use EmitAbbreviatedLiteral!"
) ? void (0) : __assert_fail ("!Op.isLiteral() && \"Literals should use EmitAbbreviatedLiteral!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 271, __extension__ __PRETTY_FUNCTION__))
;
272
273 // Encode the value as we are commanded.
274 switch (Op.getEncoding()) {
275 default: llvm_unreachable("Unknown encoding!")::llvm::llvm_unreachable_internal("Unknown encoding!", "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 275)
;
276 case BitCodeAbbrevOp::Fixed:
277 if (Op.getEncodingData())
278 Emit((unsigned)V, (unsigned)Op.getEncodingData());
279 break;
280 case BitCodeAbbrevOp::VBR:
281 if (Op.getEncodingData())
282 EmitVBR64(V, (unsigned)Op.getEncodingData());
283 break;
284 case BitCodeAbbrevOp::Char6:
285 Emit(BitCodeAbbrevOp::EncodeChar6((char)V), 6);
286 break;
287 }
288 }
289
290 /// EmitRecordWithAbbrevImpl - This is the core implementation of the record
291 /// emission code. If BlobData is non-null, then it specifies an array of
292 /// data that should be emitted as part of the Blob or Array operand that is
293 /// known to exist at the end of the record. If Code is specified, then
294 /// it is the record code to emit before the Vals, which must not contain
295 /// the code.
296 template <typename uintty>
297 void EmitRecordWithAbbrevImpl(unsigned Abbrev, ArrayRef<uintty> Vals,
298 StringRef Blob, Optional<unsigned> Code) {
299 const char *BlobData = Blob.data();
300 unsigned BlobLen = (unsigned) Blob.size();
301 unsigned AbbrevNo = Abbrev-bitc::FIRST_APPLICATION_ABBREV;
302 assert(AbbrevNo < CurAbbrevs.size() && "Invalid abbrev #!")(static_cast <bool> (AbbrevNo < CurAbbrevs.size() &&
"Invalid abbrev #!") ? void (0) : __assert_fail ("AbbrevNo < CurAbbrevs.size() && \"Invalid abbrev #!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 302, __extension__ __PRETTY_FUNCTION__))
;
303 const BitCodeAbbrev *Abbv = CurAbbrevs[AbbrevNo].get();
304
305 EmitCode(Abbrev);
306
307 unsigned i = 0, e = static_cast<unsigned>(Abbv->getNumOperandInfos());
308 if (Code) {
309 assert(e && "Expected non-empty abbreviation")(static_cast <bool> (e && "Expected non-empty abbreviation"
) ? void (0) : __assert_fail ("e && \"Expected non-empty abbreviation\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 309, __extension__ __PRETTY_FUNCTION__))
;
310 const BitCodeAbbrevOp &Op = Abbv->getOperandInfo(i++);
311
312 if (Op.isLiteral())
313 EmitAbbreviatedLiteral(Op, Code.getValue());
314 else {
315 assert(Op.getEncoding() != BitCodeAbbrevOp::Array &&(static_cast <bool> (Op.getEncoding() != BitCodeAbbrevOp
::Array && Op.getEncoding() != BitCodeAbbrevOp::Blob &&
"Expected literal or scalar") ? void (0) : __assert_fail ("Op.getEncoding() != BitCodeAbbrevOp::Array && Op.getEncoding() != BitCodeAbbrevOp::Blob && \"Expected literal or scalar\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 317, __extension__ __PRETTY_FUNCTION__))
316 Op.getEncoding() != BitCodeAbbrevOp::Blob &&(static_cast <bool> (Op.getEncoding() != BitCodeAbbrevOp
::Array && Op.getEncoding() != BitCodeAbbrevOp::Blob &&
"Expected literal or scalar") ? void (0) : __assert_fail ("Op.getEncoding() != BitCodeAbbrevOp::Array && Op.getEncoding() != BitCodeAbbrevOp::Blob && \"Expected literal or scalar\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 317, __extension__ __PRETTY_FUNCTION__))
317 "Expected literal or scalar")(static_cast <bool> (Op.getEncoding() != BitCodeAbbrevOp
::Array && Op.getEncoding() != BitCodeAbbrevOp::Blob &&
"Expected literal or scalar") ? void (0) : __assert_fail ("Op.getEncoding() != BitCodeAbbrevOp::Array && Op.getEncoding() != BitCodeAbbrevOp::Blob && \"Expected literal or scalar\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 317, __extension__ __PRETTY_FUNCTION__))
;
318 EmitAbbreviatedField(Op, Code.getValue());
319 }
320 }
321
322 unsigned RecordIdx = 0;
323 for (; i != e; ++i) {
324 const BitCodeAbbrevOp &Op = Abbv->getOperandInfo(i);
325 if (Op.isLiteral()) {
326 assert(RecordIdx < Vals.size() && "Invalid abbrev/record")(static_cast <bool> (RecordIdx < Vals.size() &&
"Invalid abbrev/record") ? void (0) : __assert_fail ("RecordIdx < Vals.size() && \"Invalid abbrev/record\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 326, __extension__ __PRETTY_FUNCTION__))
;
327 EmitAbbreviatedLiteral(Op, Vals[RecordIdx]);
328 ++RecordIdx;
329 } else if (Op.getEncoding() == BitCodeAbbrevOp::Array) {
330 // Array case.
331 assert(i + 2 == e && "array op not second to last?")(static_cast <bool> (i + 2 == e && "array op not second to last?"
) ? void (0) : __assert_fail ("i + 2 == e && \"array op not second to last?\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 331, __extension__ __PRETTY_FUNCTION__))
;
332 const BitCodeAbbrevOp &EltEnc = Abbv->getOperandInfo(++i);
333
334 // If this record has blob data, emit it, otherwise we must have record
335 // entries to encode this way.
336 if (BlobData) {
337 assert(RecordIdx == Vals.size() &&(static_cast <bool> (RecordIdx == Vals.size() &&
"Blob data and record entries specified for array!") ? void (
0) : __assert_fail ("RecordIdx == Vals.size() && \"Blob data and record entries specified for array!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 338, __extension__ __PRETTY_FUNCTION__))
338 "Blob data and record entries specified for array!")(static_cast <bool> (RecordIdx == Vals.size() &&
"Blob data and record entries specified for array!") ? void (
0) : __assert_fail ("RecordIdx == Vals.size() && \"Blob data and record entries specified for array!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 338, __extension__ __PRETTY_FUNCTION__))
;
339 // Emit a vbr6 to indicate the number of elements present.
340 EmitVBR(static_cast<uint32_t>(BlobLen), 6);
341
342 // Emit each field.
343 for (unsigned i = 0; i != BlobLen; ++i)
344 EmitAbbreviatedField(EltEnc, (unsigned char)BlobData[i]);
345
346 // Know that blob data is consumed for assertion below.
347 BlobData = nullptr;
348 } else {
349 // Emit a vbr6 to indicate the number of elements present.
350 EmitVBR(static_cast<uint32_t>(Vals.size()-RecordIdx), 6);
351
352 // Emit each field.
353 for (unsigned e = Vals.size(); RecordIdx != e; ++RecordIdx)
354 EmitAbbreviatedField(EltEnc, Vals[RecordIdx]);
355 }
356 } else if (Op.getEncoding() == BitCodeAbbrevOp::Blob) {
357 // If this record has blob data, emit it, otherwise we must have record
358 // entries to encode this way.
359
360 if (BlobData) {
361 assert(RecordIdx == Vals.size() &&(static_cast <bool> (RecordIdx == Vals.size() &&
"Blob data and record entries specified for blob operand!") ?
void (0) : __assert_fail ("RecordIdx == Vals.size() && \"Blob data and record entries specified for blob operand!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 362, __extension__ __PRETTY_FUNCTION__))
362 "Blob data and record entries specified for blob operand!")(static_cast <bool> (RecordIdx == Vals.size() &&
"Blob data and record entries specified for blob operand!") ?
void (0) : __assert_fail ("RecordIdx == Vals.size() && \"Blob data and record entries specified for blob operand!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 362, __extension__ __PRETTY_FUNCTION__))
;
363
364 assert(Blob.data() == BlobData && "BlobData got moved")(static_cast <bool> (Blob.data() == BlobData &&
"BlobData got moved") ? void (0) : __assert_fail ("Blob.data() == BlobData && \"BlobData got moved\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 364, __extension__ __PRETTY_FUNCTION__))
;
365 assert(Blob.size() == BlobLen && "BlobLen got changed")(static_cast <bool> (Blob.size() == BlobLen && "BlobLen got changed"
) ? void (0) : __assert_fail ("Blob.size() == BlobLen && \"BlobLen got changed\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 365, __extension__ __PRETTY_FUNCTION__))
;
366 emitBlob(Blob);
367 BlobData = nullptr;
368 } else {
369 emitBlob(Vals.slice(RecordIdx));
370 }
371 } else { // Single scalar field.
372 assert(RecordIdx < Vals.size() && "Invalid abbrev/record")(static_cast <bool> (RecordIdx < Vals.size() &&
"Invalid abbrev/record") ? void (0) : __assert_fail ("RecordIdx < Vals.size() && \"Invalid abbrev/record\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 372, __extension__ __PRETTY_FUNCTION__))
;
373 EmitAbbreviatedField(Op, Vals[RecordIdx]);
374 ++RecordIdx;
375 }
376 }
377 assert(RecordIdx == Vals.size() && "Not all record operands emitted!")(static_cast <bool> (RecordIdx == Vals.size() &&
"Not all record operands emitted!") ? void (0) : __assert_fail
("RecordIdx == Vals.size() && \"Not all record operands emitted!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 377, __extension__ __PRETTY_FUNCTION__))
;
378 assert(BlobData == nullptr &&(static_cast <bool> (BlobData == nullptr && "Blob data specified for record that doesn't use it!"
) ? void (0) : __assert_fail ("BlobData == nullptr && \"Blob data specified for record that doesn't use it!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 379, __extension__ __PRETTY_FUNCTION__))
379 "Blob data specified for record that doesn't use it!")(static_cast <bool> (BlobData == nullptr && "Blob data specified for record that doesn't use it!"
) ? void (0) : __assert_fail ("BlobData == nullptr && \"Blob data specified for record that doesn't use it!\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 379, __extension__ __PRETTY_FUNCTION__))
;
380 }
381
382public:
383 /// Emit a blob, including flushing before and tail-padding.
384 template <class UIntTy>
385 void emitBlob(ArrayRef<UIntTy> Bytes, bool ShouldEmitSize = true) {
386 // Emit a vbr6 to indicate the number of elements present.
387 if (ShouldEmitSize)
388 EmitVBR(static_cast<uint32_t>(Bytes.size()), 6);
389
390 // Flush to a 32-bit alignment boundary.
391 FlushToWord();
392
393 // Emit literal bytes.
394 for (const auto &B : Bytes) {
395 assert(isUInt<8>(B) && "Value too large to emit as byte")(static_cast <bool> (isUInt<8>(B) && "Value too large to emit as byte"
) ? void (0) : __assert_fail ("isUInt<8>(B) && \"Value too large to emit as byte\""
, "/build/llvm-toolchain-snapshot-6.0~svn318631/include/llvm/Bitcode/BitstreamWriter.h"
, 395, __extension__ __PRETTY_FUNCTION__))
;
396 WriteByte((unsigned char)B);
397 }
398
399 // Align end to 32-bits.
400 while (GetBufferOffset() & 3)
401 WriteByte(0);
402 }
403 void emitBlob(StringRef Bytes, bool ShouldEmitSize = true) {
404 emitBlob(makeArrayRef((const uint8_t *)Bytes.data(), Bytes.size()),
405 ShouldEmitSize);
406 }
407
408 /// EmitRecord - Emit the specified record to the stream, using an abbrev if
409 /// we have one to compress the output.
410 template <typename Container>
411 void EmitRecord(unsigned Code, const Container &Vals, unsigned Abbrev = 0) {
412 if (!Abbrev) {
2
Taking true branch
413 // If we don't have an abbrev to use, emit this in its fully unabbreviated
414 // form.
415 auto Count = static_cast<uint32_t>(makeArrayRef(Vals).size());
416 EmitCode(bitc::UNABBREV_RECORD);
417 EmitVBR(Code, 6);
418 EmitVBR(Count, 6);
419 for (unsigned i = 0, e = Count; i != e; ++i)
3
Assuming 'i' is not equal to 'e'
4
Loop condition is true. Entering loop body
5
Assuming 'i' is not equal to 'e'
6
Loop condition is true. Entering loop body
420 EmitVBR64(Vals[i], 6);
7
1st function call argument is an uninitialized value
421 return;
422 }
423
424 EmitRecordWithAbbrevImpl(Abbrev, makeArrayRef(Vals), StringRef(), Code);
425 }
426
427 /// EmitRecordWithAbbrev - Emit a record with the specified abbreviation.
428 /// Unlike EmitRecord, the code for the record should be included in Vals as
429 /// the first entry.
430 template <typename Container>
431 void EmitRecordWithAbbrev(unsigned Abbrev, const Container &Vals) {
432 EmitRecordWithAbbrevImpl(Abbrev, makeArrayRef(Vals), StringRef(), None);
433 }
434
435 /// EmitRecordWithBlob - Emit the specified record to the stream, using an
436 /// abbrev that includes a blob at the end. The blob data to emit is
437 /// specified by the pointer and length specified at the end. In contrast to
438 /// EmitRecord, this routine expects that the first entry in Vals is the code
439 /// of the record.
440 template <typename Container>
441 void EmitRecordWithBlob(unsigned Abbrev, const Container &Vals,
442 StringRef Blob) {
443 EmitRecordWithAbbrevImpl(Abbrev, makeArrayRef(Vals), Blob, None);
444 }
445 template <typename Container>
446 void EmitRecordWithBlob(unsigned Abbrev, const Container &Vals,
447 const char *BlobData, unsigned BlobLen) {
448 return EmitRecordWithAbbrevImpl(Abbrev, makeArrayRef(Vals),
449 StringRef(BlobData, BlobLen), None);
450 }
451
452 /// EmitRecordWithArray - Just like EmitRecordWithBlob, works with records
453 /// that end with an array.
454 template <typename Container>
455 void EmitRecordWithArray(unsigned Abbrev, const Container &Vals,
456 StringRef Array) {
457 EmitRecordWithAbbrevImpl(Abbrev, makeArrayRef(Vals), Array, None);
458 }
459 template <typename Container>
460 void EmitRecordWithArray(unsigned Abbrev, const Container &Vals,
461 const char *ArrayData, unsigned ArrayLen) {
462 return EmitRecordWithAbbrevImpl(Abbrev, makeArrayRef(Vals),
463 StringRef(ArrayData, ArrayLen), None);
464 }
465
466 //===--------------------------------------------------------------------===//
467 // Abbrev Emission
468 //===--------------------------------------------------------------------===//
469
470private:
471 // Emit the abbreviation as a DEFINE_ABBREV record.
472 void EncodeAbbrev(const BitCodeAbbrev &Abbv) {
473 EmitCode(bitc::DEFINE_ABBREV);
474 EmitVBR(Abbv.getNumOperandInfos(), 5);
475 for (unsigned i = 0, e = static_cast<unsigned>(Abbv.getNumOperandInfos());
476 i != e; ++i) {
477 const BitCodeAbbrevOp &Op = Abbv.getOperandInfo(i);
478 Emit(Op.isLiteral(), 1);
479 if (Op.isLiteral()) {
480 EmitVBR64(Op.getLiteralValue(), 8);
481 } else {
482 Emit(Op.getEncoding(), 3);
483 if (Op.hasEncodingData())
484 EmitVBR64(Op.getEncodingData(), 5);
485 }
486 }
487 }
488public:
489
490 /// EmitAbbrev - This emits an abbreviation to the stream. Note that this
491 /// method takes ownership of the specified abbrev.
492 unsigned EmitAbbrev(std::shared_ptr<BitCodeAbbrev> Abbv) {
493 // Emit the abbreviation as a record.
494 EncodeAbbrev(*Abbv);
495 CurAbbrevs.push_back(std::move(Abbv));
496 return static_cast<unsigned>(CurAbbrevs.size())-1 +
497 bitc::FIRST_APPLICATION_ABBREV;
498 }
499
500 //===--------------------------------------------------------------------===//
501 // BlockInfo Block Emission
502 //===--------------------------------------------------------------------===//
503
504 /// EnterBlockInfoBlock - Start emitting the BLOCKINFO_BLOCK.
505 void EnterBlockInfoBlock() {
506 EnterSubblock(bitc::BLOCKINFO_BLOCK_ID, 2);
507 BlockInfoCurBID = ~0U;
508 BlockInfoRecords.clear();
509 }
510private:
511 /// SwitchToBlockID - If we aren't already talking about the specified block
512 /// ID, emit a BLOCKINFO_CODE_SETBID record.
513 void SwitchToBlockID(unsigned BlockID) {
514 if (BlockInfoCurBID == BlockID) return;
515 SmallVector<unsigned, 2> V;
516 V.push_back(BlockID);
517 EmitRecord(bitc::BLOCKINFO_CODE_SETBID, V);
518 BlockInfoCurBID = BlockID;
519 }
520
521 BlockInfo &getOrCreateBlockInfo(unsigned BlockID) {
522 if (BlockInfo *BI = getBlockInfo(BlockID))
523 return *BI;
524
525 // Otherwise, add a new record.
526 BlockInfoRecords.emplace_back();
527 BlockInfoRecords.back().BlockID = BlockID;
528 return BlockInfoRecords.back();
529 }
530
531public:
532
533 /// EmitBlockInfoAbbrev - Emit a DEFINE_ABBREV record for the specified
534 /// BlockID.
535 unsigned EmitBlockInfoAbbrev(unsigned BlockID, std::shared_ptr<BitCodeAbbrev> Abbv) {
536 SwitchToBlockID(BlockID);
537 EncodeAbbrev(*Abbv);
538
539 // Add the abbrev to the specified block record.
540 BlockInfo &Info = getOrCreateBlockInfo(BlockID);
541 Info.Abbrevs.push_back(std::move(Abbv));
542
543 return Info.Abbrevs.size()-1+bitc::FIRST_APPLICATION_ABBREV;
544 }
545};
546
547
548} // End llvm namespace
549
550#endif