Bug Summary

File:llvm/include/llvm/Bitstream/BitstreamWriter.h
Warning:line 501, column 9
1st function call argument is an uninitialized value

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name ASTWriter.cpp -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mframe-pointer=none -relaxed-aliasing -fmath-errno -ffp-contract=on -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -ffunction-sections -fdata-sections -fcoverage-compilation-dir=/build/llvm-toolchain-snapshot-14~++20220116100644+5f782d25a742/build-llvm -resource-dir /usr/lib/llvm-14/lib/clang/14.0.0 -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I tools/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-14~++20220116100644+5f782d25a742/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-14~++20220116100644+5f782d25a742/clang/include -I tools/clang/include -I include -I /build/llvm-toolchain-snapshot-14~++20220116100644+5f782d25a742/llvm/include -D _FORTIFY_SOURCE=2 -D NDEBUG -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/x86_64-linux-gnu/c++/10 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../include/c++/10/backward -internal-isystem /usr/lib/llvm-14/lib/clang/14.0.0/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/10/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -fmacro-prefix-map=/build/llvm-toolchain-snapshot-14~++20220116100644+5f782d25a742/build-llvm=build-llvm -fmacro-prefix-map=/build/llvm-toolchain-snapshot-14~++20220116100644+5f782d25a742/= -fcoverage-prefix-map=/build/llvm-toolchain-snapshot-14~++20220116100644+5f782d25a742/build-llvm=build-llvm -fcoverage-prefix-map=/build/llvm-toolchain-snapshot-14~++20220116100644+5f782d25a742/= -O3 -Wno-unused-command-line-argument -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-class-memaccess -Wno-redundant-move -Wno-pessimizing-move -Wno-noexcept-type -Wno-comment -std=c++14 -fdeprecated-macro -fdebug-compilation-dir=/build/llvm-toolchain-snapshot-14~++20220116100644+5f782d25a742/build-llvm -fdebug-prefix-map=/build/llvm-toolchain-snapshot-14~++20220116100644+5f782d25a742/build-llvm=build-llvm -fdebug-prefix-map=/build/llvm-toolchain-snapshot-14~++20220116100644+5f782d25a742/= -ferror-limit 19 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fcolor-diagnostics -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/scan-build-2022-01-16-232930-107970-1 -x c++ /build/llvm-toolchain-snapshot-14~++20220116100644+5f782d25a742/clang/lib/Serialization/ASTWriter.cpp

/build/llvm-toolchain-snapshot-14~++20220116100644+5f782d25a742/clang/lib/Serialization/ASTWriter.cpp

1//===- ASTWriter.cpp - AST File Writer ------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file defines the ASTWriter class, which writes AST files.
10//
11//===----------------------------------------------------------------------===//
12
13#include "ASTCommon.h"
14#include "ASTReaderInternals.h"
15#include "MultiOnDiskHashTable.h"
16#include "clang/AST/ASTContext.h"
17#include "clang/AST/ASTUnresolvedSet.h"
18#include "clang/AST/AbstractTypeWriter.h"
19#include "clang/AST/Attr.h"
20#include "clang/AST/Decl.h"
21#include "clang/AST/DeclBase.h"
22#include "clang/AST/DeclCXX.h"
23#include "clang/AST/DeclContextInternals.h"
24#include "clang/AST/DeclFriend.h"
25#include "clang/AST/DeclObjC.h"
26#include "clang/AST/DeclTemplate.h"
27#include "clang/AST/DeclarationName.h"
28#include "clang/AST/Expr.h"
29#include "clang/AST/ExprCXX.h"
30#include "clang/AST/LambdaCapture.h"
31#include "clang/AST/NestedNameSpecifier.h"
32#include "clang/AST/OpenMPClause.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/Module.h"
46#include "clang/Basic/ObjCRuntime.h"
47#include "clang/Basic/OpenCLOptions.h"
48#include "clang/Basic/SourceLocation.h"
49#include "clang/Basic/SourceManager.h"
50#include "clang/Basic/SourceManagerInternals.h"
51#include "clang/Basic/Specifiers.h"
52#include "clang/Basic/TargetInfo.h"
53#include "clang/Basic/TargetOptions.h"
54#include "clang/Basic/Version.h"
55#include "clang/Lex/HeaderSearch.h"
56#include "clang/Lex/HeaderSearchOptions.h"
57#include "clang/Lex/MacroInfo.h"
58#include "clang/Lex/ModuleMap.h"
59#include "clang/Lex/PreprocessingRecord.h"
60#include "clang/Lex/Preprocessor.h"
61#include "clang/Lex/PreprocessorOptions.h"
62#include "clang/Lex/Token.h"
63#include "clang/Sema/IdentifierResolver.h"
64#include "clang/Sema/ObjCMethodList.h"
65#include "clang/Sema/Sema.h"
66#include "clang/Sema/Weak.h"
67#include "clang/Serialization/ASTBitCodes.h"
68#include "clang/Serialization/ASTReader.h"
69#include "clang/Serialization/ASTRecordWriter.h"
70#include "clang/Serialization/InMemoryModuleCache.h"
71#include "clang/Serialization/ModuleFile.h"
72#include "clang/Serialization/ModuleFileExtension.h"
73#include "clang/Serialization/SerializationDiagnostic.h"
74#include "llvm/ADT/APFloat.h"
75#include "llvm/ADT/APInt.h"
76#include "llvm/ADT/APSInt.h"
77#include "llvm/ADT/ArrayRef.h"
78#include "llvm/ADT/DenseMap.h"
79#include "llvm/ADT/Hashing.h"
80#include "llvm/ADT/Optional.h"
81#include "llvm/ADT/PointerIntPair.h"
82#include "llvm/ADT/STLExtras.h"
83#include "llvm/ADT/ScopeExit.h"
84#include "llvm/ADT/SmallPtrSet.h"
85#include "llvm/ADT/SmallString.h"
86#include "llvm/ADT/SmallVector.h"
87#include "llvm/ADT/StringMap.h"
88#include "llvm/ADT/StringRef.h"
89#include "llvm/Bitstream/BitCodes.h"
90#include "llvm/Bitstream/BitstreamWriter.h"
91#include "llvm/Support/Casting.h"
92#include "llvm/Support/Compression.h"
93#include "llvm/Support/DJB.h"
94#include "llvm/Support/Endian.h"
95#include "llvm/Support/EndianStream.h"
96#include "llvm/Support/Error.h"
97#include "llvm/Support/ErrorHandling.h"
98#include "llvm/Support/LEB128.h"
99#include "llvm/Support/MemoryBuffer.h"
100#include "llvm/Support/OnDiskHashTable.h"
101#include "llvm/Support/Path.h"
102#include "llvm/Support/SHA1.h"
103#include "llvm/Support/VersionTuple.h"
104#include "llvm/Support/raw_ostream.h"
105#include <algorithm>
106#include <cassert>
107#include <cstdint>
108#include <cstdlib>
109#include <cstring>
110#include <ctime>
111#include <deque>
112#include <limits>
113#include <memory>
114#include <queue>
115#include <tuple>
116#include <utility>
117#include <vector>
118
119using namespace clang;
120using namespace clang::serialization;
121
122template <typename T, typename Allocator>
123static StringRef bytes(const std::vector<T, Allocator> &v) {
124 if (v.empty()) return StringRef();
125 return StringRef(reinterpret_cast<const char*>(&v[0]),
126 sizeof(T) * v.size());
127}
128
129template <typename T>
130static StringRef bytes(const SmallVectorImpl<T> &v) {
131 return StringRef(reinterpret_cast<const char*>(v.data()),
132 sizeof(T) * v.size());
133}
134
135static std::string bytes(const std::vector<bool> &V) {
136 std::string Str;
137 Str.reserve(V.size() / 8);
138 for (unsigned I = 0, E = V.size(); I < E;) {
139 char Byte = 0;
140 for (unsigned Bit = 0; Bit < 8 && I < E; ++Bit, ++I)
141 Byte |= V[I] << Bit;
142 Str += Byte;
143 }
144 return Str;
145}
146
147//===----------------------------------------------------------------------===//
148// Type serialization
149//===----------------------------------------------------------------------===//
150
151static TypeCode getTypeCodeForTypeClass(Type::TypeClass id) {
152 switch (id) {
153#define TYPE_BIT_CODE(CLASS_ID, CODE_ID, CODE_VALUE) \
154 case Type::CLASS_ID: return TYPE_##CODE_ID;
155#include "clang/Serialization/TypeBitCodes.def"
156 case Type::Builtin:
157 llvm_unreachable("shouldn't be serializing a builtin type this way")::llvm::llvm_unreachable_internal("shouldn't be serializing a builtin type this way"
, "clang/lib/Serialization/ASTWriter.cpp", 157)
;
158 }
159 llvm_unreachable("bad type kind")::llvm::llvm_unreachable_internal("bad type kind", "clang/lib/Serialization/ASTWriter.cpp"
, 159)
;
160}
161
162namespace {
163
164std::set<const FileEntry *> GetAllModuleMaps(const HeaderSearch &HS,
165 Module *RootModule) {
166 std::set<const FileEntry *> ModuleMaps{};
167 std::set<Module *> ProcessedModules;
168 SmallVector<Module *> ModulesToProcess{RootModule};
169
170 SmallVector<const FileEntry *, 16> FilesByUID;
171 HS.getFileMgr().GetUniqueIDMapping(FilesByUID);
172
173 if (FilesByUID.size() > HS.header_file_size())
174 FilesByUID.resize(HS.header_file_size());
175
176 for (unsigned UID = 0, LastUID = FilesByUID.size(); UID != LastUID; ++UID) {
177 const FileEntry *File = FilesByUID[UID];
178 if (!File)
179 continue;
180
181 const HeaderFileInfo *HFI =
182 HS.getExistingFileInfo(File, /*WantExternal*/ false);
183 if (!HFI || (HFI->isModuleHeader && !HFI->isCompilingModuleHeader))
184 continue;
185
186 for (const auto &KH : HS.findAllModulesForHeader(File)) {
187 if (!KH.getModule())
188 continue;
189 ModulesToProcess.push_back(KH.getModule());
190 }
191 }
192
193 while (!ModulesToProcess.empty()) {
194 auto *CurrentModule = ModulesToProcess.pop_back_val();
195 ProcessedModules.insert(CurrentModule);
196
197 auto *ModuleMapFile =
198 HS.getModuleMap().getModuleMapFileForUniquing(CurrentModule);
199 if (!ModuleMapFile) {
200 continue;
201 }
202
203 ModuleMaps.insert(ModuleMapFile);
204
205 for (auto *ImportedModule : (CurrentModule)->Imports) {
206 if (!ImportedModule ||
207 ProcessedModules.find(ImportedModule) != ProcessedModules.end()) {
208 continue;
209 }
210 ModulesToProcess.push_back(ImportedModule);
211 }
212 }
213
214 return ModuleMaps;
215}
216
217class ASTTypeWriter {
218 ASTWriter &Writer;
219 ASTWriter::RecordData Record;
220 ASTRecordWriter BasicWriter;
221
222public:
223 ASTTypeWriter(ASTWriter &Writer)
224 : Writer(Writer), BasicWriter(Writer, Record) {}
225
226 uint64_t write(QualType T) {
227 if (T.hasLocalNonFastQualifiers()) {
228 Qualifiers Qs = T.getLocalQualifiers();
229 BasicWriter.writeQualType(T.getLocalUnqualifiedType());
230 BasicWriter.writeQualifiers(Qs);
231 return BasicWriter.Emit(TYPE_EXT_QUAL, Writer.getTypeExtQualAbbrev());
232 }
233
234 const Type *typePtr = T.getTypePtr();
235 serialization::AbstractTypeWriter<ASTRecordWriter> atw(BasicWriter);
236 atw.write(typePtr);
237 return BasicWriter.Emit(getTypeCodeForTypeClass(typePtr->getTypeClass()),
238 /*abbrev*/ 0);
239 }
240};
241
242class TypeLocWriter : public TypeLocVisitor<TypeLocWriter> {
243 ASTRecordWriter &Record;
244
245public:
246 TypeLocWriter(ASTRecordWriter &Record) : Record(Record) {}
247
248#define ABSTRACT_TYPELOC(CLASS, PARENT)
249#define TYPELOC(CLASS, PARENT) \
250 void Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc);
251#include "clang/AST/TypeLocNodes.def"
252
253 void VisitArrayTypeLoc(ArrayTypeLoc TyLoc);
254 void VisitFunctionTypeLoc(FunctionTypeLoc TyLoc);
255};
256
257} // namespace
258
259void TypeLocWriter::VisitQualifiedTypeLoc(QualifiedTypeLoc TL) {
260 // nothing to do
261}
262
263void TypeLocWriter::VisitBuiltinTypeLoc(BuiltinTypeLoc TL) {
264 Record.AddSourceLocation(TL.getBuiltinLoc());
265 if (TL.needsExtraLocalData()) {
266 Record.push_back(TL.getWrittenTypeSpec());
267 Record.push_back(static_cast<uint64_t>(TL.getWrittenSignSpec()));
268 Record.push_back(static_cast<uint64_t>(TL.getWrittenWidthSpec()));
269 Record.push_back(TL.hasModeAttr());
270 }
271}
272
273void TypeLocWriter::VisitComplexTypeLoc(ComplexTypeLoc TL) {
274 Record.AddSourceLocation(TL.getNameLoc());
275}
276
277void TypeLocWriter::VisitPointerTypeLoc(PointerTypeLoc TL) {
278 Record.AddSourceLocation(TL.getStarLoc());
279}
280
281void TypeLocWriter::VisitDecayedTypeLoc(DecayedTypeLoc TL) {
282 // nothing to do
283}
284
285void TypeLocWriter::VisitAdjustedTypeLoc(AdjustedTypeLoc TL) {
286 // nothing to do
287}
288
289void TypeLocWriter::VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL) {
290 Record.AddSourceLocation(TL.getCaretLoc());
291}
292
293void TypeLocWriter::VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL) {
294 Record.AddSourceLocation(TL.getAmpLoc());
295}
296
297void TypeLocWriter::VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL) {
298 Record.AddSourceLocation(TL.getAmpAmpLoc());
299}
300
301void TypeLocWriter::VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL) {
302 Record.AddSourceLocation(TL.getStarLoc());
303 Record.AddTypeSourceInfo(TL.getClassTInfo());
304}
305
306void TypeLocWriter::VisitArrayTypeLoc(ArrayTypeLoc TL) {
307 Record.AddSourceLocation(TL.getLBracketLoc());
308 Record.AddSourceLocation(TL.getRBracketLoc());
309 Record.push_back(TL.getSizeExpr() ? 1 : 0);
310 if (TL.getSizeExpr())
311 Record.AddStmt(TL.getSizeExpr());
312}
313
314void TypeLocWriter::VisitConstantArrayTypeLoc(ConstantArrayTypeLoc TL) {
315 VisitArrayTypeLoc(TL);
316}
317
318void TypeLocWriter::VisitIncompleteArrayTypeLoc(IncompleteArrayTypeLoc TL) {
319 VisitArrayTypeLoc(TL);
320}
321
322void TypeLocWriter::VisitVariableArrayTypeLoc(VariableArrayTypeLoc TL) {
323 VisitArrayTypeLoc(TL);
324}
325
326void TypeLocWriter::VisitDependentSizedArrayTypeLoc(
327 DependentSizedArrayTypeLoc TL) {
328 VisitArrayTypeLoc(TL);
329}
330
331void TypeLocWriter::VisitDependentAddressSpaceTypeLoc(
332 DependentAddressSpaceTypeLoc TL) {
333 Record.AddSourceLocation(TL.getAttrNameLoc());
334 SourceRange range = TL.getAttrOperandParensRange();
335 Record.AddSourceLocation(range.getBegin());
336 Record.AddSourceLocation(range.getEnd());
337 Record.AddStmt(TL.getAttrExprOperand());
338}
339
340void TypeLocWriter::VisitDependentSizedExtVectorTypeLoc(
341 DependentSizedExtVectorTypeLoc TL) {
342 Record.AddSourceLocation(TL.getNameLoc());
343}
344
345void TypeLocWriter::VisitVectorTypeLoc(VectorTypeLoc TL) {
346 Record.AddSourceLocation(TL.getNameLoc());
347}
348
349void TypeLocWriter::VisitDependentVectorTypeLoc(
350 DependentVectorTypeLoc TL) {
351 Record.AddSourceLocation(TL.getNameLoc());
352}
353
354void TypeLocWriter::VisitExtVectorTypeLoc(ExtVectorTypeLoc TL) {
355 Record.AddSourceLocation(TL.getNameLoc());
356}
357
358void TypeLocWriter::VisitConstantMatrixTypeLoc(ConstantMatrixTypeLoc TL) {
359 Record.AddSourceLocation(TL.getAttrNameLoc());
360 SourceRange range = TL.getAttrOperandParensRange();
361 Record.AddSourceLocation(range.getBegin());
362 Record.AddSourceLocation(range.getEnd());
363 Record.AddStmt(TL.getAttrRowOperand());
364 Record.AddStmt(TL.getAttrColumnOperand());
365}
366
367void TypeLocWriter::VisitDependentSizedMatrixTypeLoc(
368 DependentSizedMatrixTypeLoc TL) {
369 Record.AddSourceLocation(TL.getAttrNameLoc());
370 SourceRange range = TL.getAttrOperandParensRange();
371 Record.AddSourceLocation(range.getBegin());
372 Record.AddSourceLocation(range.getEnd());
373 Record.AddStmt(TL.getAttrRowOperand());
374 Record.AddStmt(TL.getAttrColumnOperand());
375}
376
377void TypeLocWriter::VisitFunctionTypeLoc(FunctionTypeLoc TL) {
378 Record.AddSourceLocation(TL.getLocalRangeBegin());
379 Record.AddSourceLocation(TL.getLParenLoc());
380 Record.AddSourceLocation(TL.getRParenLoc());
381 Record.AddSourceRange(TL.getExceptionSpecRange());
382 Record.AddSourceLocation(TL.getLocalRangeEnd());
383 for (unsigned i = 0, e = TL.getNumParams(); i != e; ++i)
384 Record.AddDeclRef(TL.getParam(i));
385}
386
387void TypeLocWriter::VisitFunctionProtoTypeLoc(FunctionProtoTypeLoc TL) {
388 VisitFunctionTypeLoc(TL);
389}
390
391void TypeLocWriter::VisitFunctionNoProtoTypeLoc(FunctionNoProtoTypeLoc TL) {
392 VisitFunctionTypeLoc(TL);
393}
394
395void TypeLocWriter::VisitUnresolvedUsingTypeLoc(UnresolvedUsingTypeLoc TL) {
396 Record.AddSourceLocation(TL.getNameLoc());
397}
398
399void TypeLocWriter::VisitUsingTypeLoc(UsingTypeLoc TL) {
400 Record.AddSourceLocation(TL.getNameLoc());
401}
402
403void TypeLocWriter::VisitTypedefTypeLoc(TypedefTypeLoc TL) {
404 Record.AddSourceLocation(TL.getNameLoc());
405}
406
407void TypeLocWriter::VisitObjCTypeParamTypeLoc(ObjCTypeParamTypeLoc TL) {
408 if (TL.getNumProtocols()) {
409 Record.AddSourceLocation(TL.getProtocolLAngleLoc());
410 Record.AddSourceLocation(TL.getProtocolRAngleLoc());
411 }
412 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
413 Record.AddSourceLocation(TL.getProtocolLoc(i));
414}
415
416void TypeLocWriter::VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL) {
417 Record.AddSourceLocation(TL.getTypeofLoc());
418 Record.AddSourceLocation(TL.getLParenLoc());
419 Record.AddSourceLocation(TL.getRParenLoc());
420}
421
422void TypeLocWriter::VisitTypeOfTypeLoc(TypeOfTypeLoc TL) {
423 Record.AddSourceLocation(TL.getTypeofLoc());
424 Record.AddSourceLocation(TL.getLParenLoc());
425 Record.AddSourceLocation(TL.getRParenLoc());
426 Record.AddTypeSourceInfo(TL.getUnderlyingTInfo());
427}
428
429void TypeLocWriter::VisitDecltypeTypeLoc(DecltypeTypeLoc TL) {
430 Record.AddSourceLocation(TL.getDecltypeLoc());
431 Record.AddSourceLocation(TL.getRParenLoc());
432}
433
434void TypeLocWriter::VisitUnaryTransformTypeLoc(UnaryTransformTypeLoc TL) {
435 Record.AddSourceLocation(TL.getKWLoc());
436 Record.AddSourceLocation(TL.getLParenLoc());
437 Record.AddSourceLocation(TL.getRParenLoc());
438 Record.AddTypeSourceInfo(TL.getUnderlyingTInfo());
439}
440
441void TypeLocWriter::VisitAutoTypeLoc(AutoTypeLoc TL) {
442 Record.AddSourceLocation(TL.getNameLoc());
443 Record.push_back(TL.isConstrained());
444 if (TL.isConstrained()) {
445 Record.AddNestedNameSpecifierLoc(TL.getNestedNameSpecifierLoc());
446 Record.AddSourceLocation(TL.getTemplateKWLoc());
447 Record.AddSourceLocation(TL.getConceptNameLoc());
448 Record.AddDeclRef(TL.getFoundDecl());
449 Record.AddSourceLocation(TL.getLAngleLoc());
450 Record.AddSourceLocation(TL.getRAngleLoc());
451 for (unsigned I = 0; I < TL.getNumArgs(); ++I)
452 Record.AddTemplateArgumentLocInfo(TL.getTypePtr()->getArg(I).getKind(),
453 TL.getArgLocInfo(I));
454 }
455}
456
457void TypeLocWriter::VisitDeducedTemplateSpecializationTypeLoc(
458 DeducedTemplateSpecializationTypeLoc TL) {
459 Record.AddSourceLocation(TL.getTemplateNameLoc());
460}
461
462void TypeLocWriter::VisitRecordTypeLoc(RecordTypeLoc TL) {
463 Record.AddSourceLocation(TL.getNameLoc());
464}
465
466void TypeLocWriter::VisitEnumTypeLoc(EnumTypeLoc TL) {
467 Record.AddSourceLocation(TL.getNameLoc());
468}
469
470void TypeLocWriter::VisitAttributedTypeLoc(AttributedTypeLoc TL) {
471 Record.AddAttr(TL.getAttr());
472}
473
474void TypeLocWriter::VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL) {
475 Record.AddSourceLocation(TL.getNameLoc());
476}
477
478void TypeLocWriter::VisitSubstTemplateTypeParmTypeLoc(
479 SubstTemplateTypeParmTypeLoc TL) {
480 Record.AddSourceLocation(TL.getNameLoc());
481}
482
483void TypeLocWriter::VisitSubstTemplateTypeParmPackTypeLoc(
484 SubstTemplateTypeParmPackTypeLoc TL) {
485 Record.AddSourceLocation(TL.getNameLoc());
486}
487
488void TypeLocWriter::VisitTemplateSpecializationTypeLoc(
489 TemplateSpecializationTypeLoc TL) {
490 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
491 Record.AddSourceLocation(TL.getTemplateNameLoc());
492 Record.AddSourceLocation(TL.getLAngleLoc());
493 Record.AddSourceLocation(TL.getRAngleLoc());
494 for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i)
495 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(i).getArgument().getKind(),
496 TL.getArgLoc(i).getLocInfo());
497}
498
499void TypeLocWriter::VisitParenTypeLoc(ParenTypeLoc TL) {
500 Record.AddSourceLocation(TL.getLParenLoc());
501 Record.AddSourceLocation(TL.getRParenLoc());
502}
503
504void TypeLocWriter::VisitMacroQualifiedTypeLoc(MacroQualifiedTypeLoc TL) {
505 Record.AddSourceLocation(TL.getExpansionLoc());
506}
507
508void TypeLocWriter::VisitElaboratedTypeLoc(ElaboratedTypeLoc TL) {
509 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
510 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
511}
512
513void TypeLocWriter::VisitInjectedClassNameTypeLoc(InjectedClassNameTypeLoc TL) {
514 Record.AddSourceLocation(TL.getNameLoc());
515}
516
517void TypeLocWriter::VisitDependentNameTypeLoc(DependentNameTypeLoc TL) {
518 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
519 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
520 Record.AddSourceLocation(TL.getNameLoc());
521}
522
523void TypeLocWriter::VisitDependentTemplateSpecializationTypeLoc(
524 DependentTemplateSpecializationTypeLoc TL) {
525 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
526 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
527 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
528 Record.AddSourceLocation(TL.getTemplateNameLoc());
529 Record.AddSourceLocation(TL.getLAngleLoc());
530 Record.AddSourceLocation(TL.getRAngleLoc());
531 for (unsigned I = 0, E = TL.getNumArgs(); I != E; ++I)
532 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(I).getArgument().getKind(),
533 TL.getArgLoc(I).getLocInfo());
534}
535
536void TypeLocWriter::VisitPackExpansionTypeLoc(PackExpansionTypeLoc TL) {
537 Record.AddSourceLocation(TL.getEllipsisLoc());
538}
539
540void TypeLocWriter::VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) {
541 Record.AddSourceLocation(TL.getNameLoc());
542}
543
544void TypeLocWriter::VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) {
545 Record.push_back(TL.hasBaseTypeAsWritten());
546 Record.AddSourceLocation(TL.getTypeArgsLAngleLoc());
547 Record.AddSourceLocation(TL.getTypeArgsRAngleLoc());
548 for (unsigned i = 0, e = TL.getNumTypeArgs(); i != e; ++i)
549 Record.AddTypeSourceInfo(TL.getTypeArgTInfo(i));
550 Record.AddSourceLocation(TL.getProtocolLAngleLoc());
551 Record.AddSourceLocation(TL.getProtocolRAngleLoc());
552 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
553 Record.AddSourceLocation(TL.getProtocolLoc(i));
554}
555
556void TypeLocWriter::VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) {
557 Record.AddSourceLocation(TL.getStarLoc());
558}
559
560void TypeLocWriter::VisitAtomicTypeLoc(AtomicTypeLoc TL) {
561 Record.AddSourceLocation(TL.getKWLoc());
562 Record.AddSourceLocation(TL.getLParenLoc());
563 Record.AddSourceLocation(TL.getRParenLoc());
564}
565
566void TypeLocWriter::VisitPipeTypeLoc(PipeTypeLoc TL) {
567 Record.AddSourceLocation(TL.getKWLoc());
568}
569
570void TypeLocWriter::VisitBitIntTypeLoc(clang::BitIntTypeLoc TL) {
571 Record.AddSourceLocation(TL.getNameLoc());
572}
573void TypeLocWriter::VisitDependentBitIntTypeLoc(
574 clang::DependentBitIntTypeLoc TL) {
575 Record.AddSourceLocation(TL.getNameLoc());
576}
577
578void ASTWriter::WriteTypeAbbrevs() {
579 using namespace llvm;
580
581 std::shared_ptr<BitCodeAbbrev> Abv;
582
583 // Abbreviation for TYPE_EXT_QUAL
584 Abv = std::make_shared<BitCodeAbbrev>();
585 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_EXT_QUAL));
586 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
587 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 3)); // Quals
588 TypeExtQualAbbrev = Stream.EmitAbbrev(std::move(Abv));
589
590 // Abbreviation for TYPE_FUNCTION_PROTO
591 Abv = std::make_shared<BitCodeAbbrev>();
592 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_FUNCTION_PROTO));
593 // FunctionType
594 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ReturnType
595 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // NoReturn
596 Abv->Add(BitCodeAbbrevOp(0)); // HasRegParm
597 Abv->Add(BitCodeAbbrevOp(0)); // RegParm
598 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 4)); // CC
599 Abv->Add(BitCodeAbbrevOp(0)); // ProducesResult
600 Abv->Add(BitCodeAbbrevOp(0)); // NoCallerSavedRegs
601 Abv->Add(BitCodeAbbrevOp(0)); // NoCfCheck
602 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // CmseNSCall
603 // FunctionProtoType
604 Abv->Add(BitCodeAbbrevOp(0)); // IsVariadic
605 Abv->Add(BitCodeAbbrevOp(0)); // HasTrailingReturn
606 Abv->Add(BitCodeAbbrevOp(0)); // TypeQuals
607 Abv->Add(BitCodeAbbrevOp(0)); // RefQualifier
608 Abv->Add(BitCodeAbbrevOp(EST_None)); // ExceptionSpec
609 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // NumParams
610 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
611 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Params
612 TypeFunctionProtoAbbrev = Stream.EmitAbbrev(std::move(Abv));
613}
614
615//===----------------------------------------------------------------------===//
616// ASTWriter Implementation
617//===----------------------------------------------------------------------===//
618
619static void EmitBlockID(unsigned ID, const char *Name,
620 llvm::BitstreamWriter &Stream,
621 ASTWriter::RecordDataImpl &Record) {
622 Record.clear();
623 Record.push_back(ID);
624 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETBID, Record);
625
626 // Emit the block name if present.
627 if (!Name || Name[0] == 0)
628 return;
629 Record.clear();
630 while (*Name)
631 Record.push_back(*Name++);
632 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_BLOCKNAME, Record);
633}
634
635static void EmitRecordID(unsigned ID, const char *Name,
636 llvm::BitstreamWriter &Stream,
637 ASTWriter::RecordDataImpl &Record) {
638 Record.clear();
639 Record.push_back(ID);
640 while (*Name)
641 Record.push_back(*Name++);
642 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETRECORDNAME, Record);
643}
644
645static void AddStmtsExprs(llvm::BitstreamWriter &Stream,
646 ASTWriter::RecordDataImpl &Record) {
647#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
648 RECORD(STMT_STOP);
649 RECORD(STMT_NULL_PTR);
650 RECORD(STMT_REF_PTR);
651 RECORD(STMT_NULL);
652 RECORD(STMT_COMPOUND);
653 RECORD(STMT_CASE);
654 RECORD(STMT_DEFAULT);
655 RECORD(STMT_LABEL);
656 RECORD(STMT_ATTRIBUTED);
657 RECORD(STMT_IF);
658 RECORD(STMT_SWITCH);
659 RECORD(STMT_WHILE);
660 RECORD(STMT_DO);
661 RECORD(STMT_FOR);
662 RECORD(STMT_GOTO);
663 RECORD(STMT_INDIRECT_GOTO);
664 RECORD(STMT_CONTINUE);
665 RECORD(STMT_BREAK);
666 RECORD(STMT_RETURN);
667 RECORD(STMT_DECL);
668 RECORD(STMT_GCCASM);
669 RECORD(STMT_MSASM);
670 RECORD(EXPR_PREDEFINED);
671 RECORD(EXPR_DECL_REF);
672 RECORD(EXPR_INTEGER_LITERAL);
673 RECORD(EXPR_FIXEDPOINT_LITERAL);
674 RECORD(EXPR_FLOATING_LITERAL);
675 RECORD(EXPR_IMAGINARY_LITERAL);
676 RECORD(EXPR_STRING_LITERAL);
677 RECORD(EXPR_CHARACTER_LITERAL);
678 RECORD(EXPR_PAREN);
679 RECORD(EXPR_PAREN_LIST);
680 RECORD(EXPR_UNARY_OPERATOR);
681 RECORD(EXPR_SIZEOF_ALIGN_OF);
682 RECORD(EXPR_ARRAY_SUBSCRIPT);
683 RECORD(EXPR_CALL);
684 RECORD(EXPR_MEMBER);
685 RECORD(EXPR_BINARY_OPERATOR);
686 RECORD(EXPR_COMPOUND_ASSIGN_OPERATOR);
687 RECORD(EXPR_CONDITIONAL_OPERATOR);
688 RECORD(EXPR_IMPLICIT_CAST);
689 RECORD(EXPR_CSTYLE_CAST);
690 RECORD(EXPR_COMPOUND_LITERAL);
691 RECORD(EXPR_EXT_VECTOR_ELEMENT);
692 RECORD(EXPR_INIT_LIST);
693 RECORD(EXPR_DESIGNATED_INIT);
694 RECORD(EXPR_DESIGNATED_INIT_UPDATE);
695 RECORD(EXPR_IMPLICIT_VALUE_INIT);
696 RECORD(EXPR_NO_INIT);
697 RECORD(EXPR_VA_ARG);
698 RECORD(EXPR_ADDR_LABEL);
699 RECORD(EXPR_STMT);
700 RECORD(EXPR_CHOOSE);
701 RECORD(EXPR_GNU_NULL);
702 RECORD(EXPR_SHUFFLE_VECTOR);
703 RECORD(EXPR_BLOCK);
704 RECORD(EXPR_GENERIC_SELECTION);
705 RECORD(EXPR_OBJC_STRING_LITERAL);
706 RECORD(EXPR_OBJC_BOXED_EXPRESSION);
707 RECORD(EXPR_OBJC_ARRAY_LITERAL);
708 RECORD(EXPR_OBJC_DICTIONARY_LITERAL);
709 RECORD(EXPR_OBJC_ENCODE);
710 RECORD(EXPR_OBJC_SELECTOR_EXPR);
711 RECORD(EXPR_OBJC_PROTOCOL_EXPR);
712 RECORD(EXPR_OBJC_IVAR_REF_EXPR);
713 RECORD(EXPR_OBJC_PROPERTY_REF_EXPR);
714 RECORD(EXPR_OBJC_KVC_REF_EXPR);
715 RECORD(EXPR_OBJC_MESSAGE_EXPR);
716 RECORD(STMT_OBJC_FOR_COLLECTION);
717 RECORD(STMT_OBJC_CATCH);
718 RECORD(STMT_OBJC_FINALLY);
719 RECORD(STMT_OBJC_AT_TRY);
720 RECORD(STMT_OBJC_AT_SYNCHRONIZED);
721 RECORD(STMT_OBJC_AT_THROW);
722 RECORD(EXPR_OBJC_BOOL_LITERAL);
723 RECORD(STMT_CXX_CATCH);
724 RECORD(STMT_CXX_TRY);
725 RECORD(STMT_CXX_FOR_RANGE);
726 RECORD(EXPR_CXX_OPERATOR_CALL);
727 RECORD(EXPR_CXX_MEMBER_CALL);
728 RECORD(EXPR_CXX_REWRITTEN_BINARY_OPERATOR);
729 RECORD(EXPR_CXX_CONSTRUCT);
730 RECORD(EXPR_CXX_TEMPORARY_OBJECT);
731 RECORD(EXPR_CXX_STATIC_CAST);
732 RECORD(EXPR_CXX_DYNAMIC_CAST);
733 RECORD(EXPR_CXX_REINTERPRET_CAST);
734 RECORD(EXPR_CXX_CONST_CAST);
735 RECORD(EXPR_CXX_ADDRSPACE_CAST);
736 RECORD(EXPR_CXX_FUNCTIONAL_CAST);
737 RECORD(EXPR_USER_DEFINED_LITERAL);
738 RECORD(EXPR_CXX_STD_INITIALIZER_LIST);
739 RECORD(EXPR_CXX_BOOL_LITERAL);
740 RECORD(EXPR_CXX_NULL_PTR_LITERAL);
741 RECORD(EXPR_CXX_TYPEID_EXPR);
742 RECORD(EXPR_CXX_TYPEID_TYPE);
743 RECORD(EXPR_CXX_THIS);
744 RECORD(EXPR_CXX_THROW);
745 RECORD(EXPR_CXX_DEFAULT_ARG);
746 RECORD(EXPR_CXX_DEFAULT_INIT);
747 RECORD(EXPR_CXX_BIND_TEMPORARY);
748 RECORD(EXPR_CXX_SCALAR_VALUE_INIT);
749 RECORD(EXPR_CXX_NEW);
750 RECORD(EXPR_CXX_DELETE);
751 RECORD(EXPR_CXX_PSEUDO_DESTRUCTOR);
752 RECORD(EXPR_EXPR_WITH_CLEANUPS);
753 RECORD(EXPR_CXX_DEPENDENT_SCOPE_MEMBER);
754 RECORD(EXPR_CXX_DEPENDENT_SCOPE_DECL_REF);
755 RECORD(EXPR_CXX_UNRESOLVED_CONSTRUCT);
756 RECORD(EXPR_CXX_UNRESOLVED_MEMBER);
757 RECORD(EXPR_CXX_UNRESOLVED_LOOKUP);
758 RECORD(EXPR_CXX_EXPRESSION_TRAIT);
759 RECORD(EXPR_CXX_NOEXCEPT);
760 RECORD(EXPR_OPAQUE_VALUE);
761 RECORD(EXPR_BINARY_CONDITIONAL_OPERATOR);
762 RECORD(EXPR_TYPE_TRAIT);
763 RECORD(EXPR_ARRAY_TYPE_TRAIT);
764 RECORD(EXPR_PACK_EXPANSION);
765 RECORD(EXPR_SIZEOF_PACK);
766 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM);
767 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK);
768 RECORD(EXPR_FUNCTION_PARM_PACK);
769 RECORD(EXPR_MATERIALIZE_TEMPORARY);
770 RECORD(EXPR_CUDA_KERNEL_CALL);
771 RECORD(EXPR_CXX_UUIDOF_EXPR);
772 RECORD(EXPR_CXX_UUIDOF_TYPE);
773 RECORD(EXPR_LAMBDA);
774#undef RECORD
775}
776
777void ASTWriter::WriteBlockInfoBlock() {
778 RecordData Record;
779 Stream.EnterBlockInfoBlock();
780
781#define BLOCK(X) EmitBlockID(X ## _ID, #X, Stream, Record)
782#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
783
784 // Control Block.
785 BLOCK(CONTROL_BLOCK);
786 RECORD(METADATA);
787 RECORD(MODULE_NAME);
788 RECORD(MODULE_DIRECTORY);
789 RECORD(MODULE_MAP_FILE);
790 RECORD(IMPORTS);
791 RECORD(ORIGINAL_FILE);
792 RECORD(ORIGINAL_PCH_DIR);
793 RECORD(ORIGINAL_FILE_ID);
794 RECORD(INPUT_FILE_OFFSETS);
795
796 BLOCK(OPTIONS_BLOCK);
797 RECORD(LANGUAGE_OPTIONS);
798 RECORD(TARGET_OPTIONS);
799 RECORD(FILE_SYSTEM_OPTIONS);
800 RECORD(HEADER_SEARCH_OPTIONS);
801 RECORD(PREPROCESSOR_OPTIONS);
802
803 BLOCK(INPUT_FILES_BLOCK);
804 RECORD(INPUT_FILE);
805 RECORD(INPUT_FILE_HASH);
806
807 // AST Top-Level Block.
808 BLOCK(AST_BLOCK);
809 RECORD(TYPE_OFFSET);
810 RECORD(DECL_OFFSET);
811 RECORD(IDENTIFIER_OFFSET);
812 RECORD(IDENTIFIER_TABLE);
813 RECORD(EAGERLY_DESERIALIZED_DECLS);
814 RECORD(MODULAR_CODEGEN_DECLS);
815 RECORD(SPECIAL_TYPES);
816 RECORD(STATISTICS);
817 RECORD(TENTATIVE_DEFINITIONS);
818 RECORD(SELECTOR_OFFSETS);
819 RECORD(METHOD_POOL);
820 RECORD(PP_COUNTER_VALUE);
821 RECORD(SOURCE_LOCATION_OFFSETS);
822 RECORD(SOURCE_LOCATION_PRELOADS);
823 RECORD(EXT_VECTOR_DECLS);
824 RECORD(UNUSED_FILESCOPED_DECLS);
825 RECORD(PPD_ENTITIES_OFFSETS);
826 RECORD(VTABLE_USES);
827 RECORD(PPD_SKIPPED_RANGES);
828 RECORD(REFERENCED_SELECTOR_POOL);
829 RECORD(TU_UPDATE_LEXICAL);
830 RECORD(SEMA_DECL_REFS);
831 RECORD(WEAK_UNDECLARED_IDENTIFIERS);
832 RECORD(PENDING_IMPLICIT_INSTANTIATIONS);
833 RECORD(UPDATE_VISIBLE);
834 RECORD(DECL_UPDATE_OFFSETS);
835 RECORD(DECL_UPDATES);
836 RECORD(CUDA_SPECIAL_DECL_REFS);
837 RECORD(HEADER_SEARCH_TABLE);
838 RECORD(FP_PRAGMA_OPTIONS);
839 RECORD(OPENCL_EXTENSIONS);
840 RECORD(OPENCL_EXTENSION_TYPES);
841 RECORD(OPENCL_EXTENSION_DECLS);
842 RECORD(DELEGATING_CTORS);
843 RECORD(KNOWN_NAMESPACES);
844 RECORD(MODULE_OFFSET_MAP);
845 RECORD(SOURCE_MANAGER_LINE_TABLE);
846 RECORD(OBJC_CATEGORIES_MAP);
847 RECORD(FILE_SORTED_DECLS);
848 RECORD(IMPORTED_MODULES);
849 RECORD(OBJC_CATEGORIES);
850 RECORD(MACRO_OFFSET);
851 RECORD(INTERESTING_IDENTIFIERS);
852 RECORD(UNDEFINED_BUT_USED);
853 RECORD(LATE_PARSED_TEMPLATE);
854 RECORD(OPTIMIZE_PRAGMA_OPTIONS);
855 RECORD(MSSTRUCT_PRAGMA_OPTIONS);
856 RECORD(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS);
857 RECORD(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES);
858 RECORD(DELETE_EXPRS_TO_ANALYZE);
859 RECORD(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH);
860 RECORD(PP_CONDITIONAL_STACK);
861 RECORD(DECLS_TO_CHECK_FOR_DEFERRED_DIAGS);
862
863 // SourceManager Block.
864 BLOCK(SOURCE_MANAGER_BLOCK);
865 RECORD(SM_SLOC_FILE_ENTRY);
866 RECORD(SM_SLOC_BUFFER_ENTRY);
867 RECORD(SM_SLOC_BUFFER_BLOB);
868 RECORD(SM_SLOC_BUFFER_BLOB_COMPRESSED);
869 RECORD(SM_SLOC_EXPANSION_ENTRY);
870
871 // Preprocessor Block.
872 BLOCK(PREPROCESSOR_BLOCK);
873 RECORD(PP_MACRO_DIRECTIVE_HISTORY);
874 RECORD(PP_MACRO_FUNCTION_LIKE);
875 RECORD(PP_MACRO_OBJECT_LIKE);
876 RECORD(PP_MODULE_MACRO);
877 RECORD(PP_TOKEN);
878
879 // Submodule Block.
880 BLOCK(SUBMODULE_BLOCK);
881 RECORD(SUBMODULE_METADATA);
882 RECORD(SUBMODULE_DEFINITION);
883 RECORD(SUBMODULE_UMBRELLA_HEADER);
884 RECORD(SUBMODULE_HEADER);
885 RECORD(SUBMODULE_TOPHEADER);
886 RECORD(SUBMODULE_UMBRELLA_DIR);
887 RECORD(SUBMODULE_IMPORTS);
888 RECORD(SUBMODULE_EXPORTS);
889 RECORD(SUBMODULE_REQUIRES);
890 RECORD(SUBMODULE_EXCLUDED_HEADER);
891 RECORD(SUBMODULE_LINK_LIBRARY);
892 RECORD(SUBMODULE_CONFIG_MACRO);
893 RECORD(SUBMODULE_CONFLICT);
894 RECORD(SUBMODULE_PRIVATE_HEADER);
895 RECORD(SUBMODULE_TEXTUAL_HEADER);
896 RECORD(SUBMODULE_PRIVATE_TEXTUAL_HEADER);
897 RECORD(SUBMODULE_INITIALIZERS);
898 RECORD(SUBMODULE_EXPORT_AS);
899
900 // Comments Block.
901 BLOCK(COMMENTS_BLOCK);
902 RECORD(COMMENTS_RAW_COMMENT);
903
904 // Decls and Types block.
905 BLOCK(DECLTYPES_BLOCK);
906 RECORD(TYPE_EXT_QUAL);
907 RECORD(TYPE_COMPLEX);
908 RECORD(TYPE_POINTER);
909 RECORD(TYPE_BLOCK_POINTER);
910 RECORD(TYPE_LVALUE_REFERENCE);
911 RECORD(TYPE_RVALUE_REFERENCE);
912 RECORD(TYPE_MEMBER_POINTER);
913 RECORD(TYPE_CONSTANT_ARRAY);
914 RECORD(TYPE_INCOMPLETE_ARRAY);
915 RECORD(TYPE_VARIABLE_ARRAY);
916 RECORD(TYPE_VECTOR);
917 RECORD(TYPE_EXT_VECTOR);
918 RECORD(TYPE_FUNCTION_NO_PROTO);
919 RECORD(TYPE_FUNCTION_PROTO);
920 RECORD(TYPE_TYPEDEF);
921 RECORD(TYPE_TYPEOF_EXPR);
922 RECORD(TYPE_TYPEOF);
923 RECORD(TYPE_RECORD);
924 RECORD(TYPE_ENUM);
925 RECORD(TYPE_OBJC_INTERFACE);
926 RECORD(TYPE_OBJC_OBJECT_POINTER);
927 RECORD(TYPE_DECLTYPE);
928 RECORD(TYPE_ELABORATED);
929 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM);
930 RECORD(TYPE_UNRESOLVED_USING);
931 RECORD(TYPE_INJECTED_CLASS_NAME);
932 RECORD(TYPE_OBJC_OBJECT);
933 RECORD(TYPE_TEMPLATE_TYPE_PARM);
934 RECORD(TYPE_TEMPLATE_SPECIALIZATION);
935 RECORD(TYPE_DEPENDENT_NAME);
936 RECORD(TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION);
937 RECORD(TYPE_DEPENDENT_SIZED_ARRAY);
938 RECORD(TYPE_PAREN);
939 RECORD(TYPE_MACRO_QUALIFIED);
940 RECORD(TYPE_PACK_EXPANSION);
941 RECORD(TYPE_ATTRIBUTED);
942 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK);
943 RECORD(TYPE_AUTO);
944 RECORD(TYPE_UNARY_TRANSFORM);
945 RECORD(TYPE_ATOMIC);
946 RECORD(TYPE_DECAYED);
947 RECORD(TYPE_ADJUSTED);
948 RECORD(TYPE_OBJC_TYPE_PARAM);
949 RECORD(LOCAL_REDECLARATIONS);
950 RECORD(DECL_TYPEDEF);
951 RECORD(DECL_TYPEALIAS);
952 RECORD(DECL_ENUM);
953 RECORD(DECL_RECORD);
954 RECORD(DECL_ENUM_CONSTANT);
955 RECORD(DECL_FUNCTION);
956 RECORD(DECL_OBJC_METHOD);
957 RECORD(DECL_OBJC_INTERFACE);
958 RECORD(DECL_OBJC_PROTOCOL);
959 RECORD(DECL_OBJC_IVAR);
960 RECORD(DECL_OBJC_AT_DEFS_FIELD);
961 RECORD(DECL_OBJC_CATEGORY);
962 RECORD(DECL_OBJC_CATEGORY_IMPL);
963 RECORD(DECL_OBJC_IMPLEMENTATION);
964 RECORD(DECL_OBJC_COMPATIBLE_ALIAS);
965 RECORD(DECL_OBJC_PROPERTY);
966 RECORD(DECL_OBJC_PROPERTY_IMPL);
967 RECORD(DECL_FIELD);
968 RECORD(DECL_MS_PROPERTY);
969 RECORD(DECL_VAR);
970 RECORD(DECL_IMPLICIT_PARAM);
971 RECORD(DECL_PARM_VAR);
972 RECORD(DECL_FILE_SCOPE_ASM);
973 RECORD(DECL_BLOCK);
974 RECORD(DECL_CONTEXT_LEXICAL);
975 RECORD(DECL_CONTEXT_VISIBLE);
976 RECORD(DECL_NAMESPACE);
977 RECORD(DECL_NAMESPACE_ALIAS);
978 RECORD(DECL_USING);
979 RECORD(DECL_USING_SHADOW);
980 RECORD(DECL_USING_DIRECTIVE);
981 RECORD(DECL_UNRESOLVED_USING_VALUE);
982 RECORD(DECL_UNRESOLVED_USING_TYPENAME);
983 RECORD(DECL_LINKAGE_SPEC);
984 RECORD(DECL_CXX_RECORD);
985 RECORD(DECL_CXX_METHOD);
986 RECORD(DECL_CXX_CONSTRUCTOR);
987 RECORD(DECL_CXX_DESTRUCTOR);
988 RECORD(DECL_CXX_CONVERSION);
989 RECORD(DECL_ACCESS_SPEC);
990 RECORD(DECL_FRIEND);
991 RECORD(DECL_FRIEND_TEMPLATE);
992 RECORD(DECL_CLASS_TEMPLATE);
993 RECORD(DECL_CLASS_TEMPLATE_SPECIALIZATION);
994 RECORD(DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION);
995 RECORD(DECL_VAR_TEMPLATE);
996 RECORD(DECL_VAR_TEMPLATE_SPECIALIZATION);
997 RECORD(DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION);
998 RECORD(DECL_FUNCTION_TEMPLATE);
999 RECORD(DECL_TEMPLATE_TYPE_PARM);
1000 RECORD(DECL_NON_TYPE_TEMPLATE_PARM);
1001 RECORD(DECL_TEMPLATE_TEMPLATE_PARM);
1002 RECORD(DECL_CONCEPT);
1003 RECORD(DECL_REQUIRES_EXPR_BODY);
1004 RECORD(DECL_TYPE_ALIAS_TEMPLATE);
1005 RECORD(DECL_STATIC_ASSERT);
1006 RECORD(DECL_CXX_BASE_SPECIFIERS);
1007 RECORD(DECL_CXX_CTOR_INITIALIZERS);
1008 RECORD(DECL_INDIRECTFIELD);
1009 RECORD(DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK);
1010 RECORD(DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK);
1011 RECORD(DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION);
1012 RECORD(DECL_IMPORT);
1013 RECORD(DECL_OMP_THREADPRIVATE);
1014 RECORD(DECL_EMPTY);
1015 RECORD(DECL_OBJC_TYPE_PARAM);
1016 RECORD(DECL_OMP_CAPTUREDEXPR);
1017 RECORD(DECL_PRAGMA_COMMENT);
1018 RECORD(DECL_PRAGMA_DETECT_MISMATCH);
1019 RECORD(DECL_OMP_DECLARE_REDUCTION);
1020 RECORD(DECL_OMP_ALLOCATE);
1021
1022 // Statements and Exprs can occur in the Decls and Types block.
1023 AddStmtsExprs(Stream, Record);
1024
1025 BLOCK(PREPROCESSOR_DETAIL_BLOCK);
1026 RECORD(PPD_MACRO_EXPANSION);
1027 RECORD(PPD_MACRO_DEFINITION);
1028 RECORD(PPD_INCLUSION_DIRECTIVE);
1029
1030 // Decls and Types block.
1031 BLOCK(EXTENSION_BLOCK);
1032 RECORD(EXTENSION_METADATA);
1033
1034 BLOCK(UNHASHED_CONTROL_BLOCK);
1035 RECORD(SIGNATURE);
1036 RECORD(AST_BLOCK_HASH);
1037 RECORD(DIAGNOSTIC_OPTIONS);
1038 RECORD(DIAG_PRAGMA_MAPPINGS);
1039
1040#undef RECORD
1041#undef BLOCK
1042 Stream.ExitBlock();
1043}
1044
1045/// Prepares a path for being written to an AST file by converting it
1046/// to an absolute path and removing nested './'s.
1047///
1048/// \return \c true if the path was changed.
1049static bool cleanPathForOutput(FileManager &FileMgr,
1050 SmallVectorImpl<char> &Path) {
1051 bool Changed = FileMgr.makeAbsolutePath(Path);
1052 return Changed | llvm::sys::path::remove_dots(Path);
1053}
1054
1055/// Adjusts the given filename to only write out the portion of the
1056/// filename that is not part of the system root directory.
1057///
1058/// \param Filename the file name to adjust.
1059///
1060/// \param BaseDir When non-NULL, the PCH file is a relocatable AST file and
1061/// the returned filename will be adjusted by this root directory.
1062///
1063/// \returns either the original filename (if it needs no adjustment) or the
1064/// adjusted filename (which points into the @p Filename parameter).
1065static const char *
1066adjustFilenameForRelocatableAST(const char *Filename, StringRef BaseDir) {
1067 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?\""
, "clang/lib/Serialization/ASTWriter.cpp", 1067, __extension__
__PRETTY_FUNCTION__))
;
1068
1069 if (BaseDir.empty())
1070 return Filename;
1071
1072 // Verify that the filename and the system root have the same prefix.
1073 unsigned Pos = 0;
1074 for (; Filename[Pos] && Pos < BaseDir.size(); ++Pos)
1075 if (Filename[Pos] != BaseDir[Pos])
1076 return Filename; // Prefixes don't match.
1077
1078 // We hit the end of the filename before we hit the end of the system root.
1079 if (!Filename[Pos])
1080 return Filename;
1081
1082 // If there's not a path separator at the end of the base directory nor
1083 // immediately after it, then this isn't within the base directory.
1084 if (!llvm::sys::path::is_separator(Filename[Pos])) {
1085 if (!llvm::sys::path::is_separator(BaseDir.back()))
1086 return Filename;
1087 } else {
1088 // If the file name has a '/' at the current position, skip over the '/'.
1089 // We distinguish relative paths from absolute paths by the
1090 // absence of '/' at the beginning of relative paths.
1091 //
1092 // FIXME: This is wrong. We distinguish them by asking if the path is
1093 // absolute, which isn't the same thing. And there might be multiple '/'s
1094 // in a row. Use a better mechanism to indicate whether we have emitted an
1095 // absolute or relative path.
1096 ++Pos;
1097 }
1098
1099 return Filename + Pos;
1100}
1101
1102std::pair<ASTFileSignature, ASTFileSignature>
1103ASTWriter::createSignature(StringRef AllBytes, StringRef ASTBlockBytes) {
1104 llvm::SHA1 Hasher;
1105 Hasher.update(ASTBlockBytes);
1106 auto Hash = Hasher.result();
1107 ASTFileSignature ASTBlockHash = ASTFileSignature::create(Hash);
1108
1109 // Add the remaining bytes (i.e. bytes before the unhashed control block that
1110 // are not part of the AST block).
1111 Hasher.update(
1112 AllBytes.take_front(ASTBlockBytes.bytes_end() - AllBytes.bytes_begin()));
1113 Hasher.update(
1114 AllBytes.take_back(AllBytes.bytes_end() - ASTBlockBytes.bytes_end()));
1115 Hash = Hasher.result();
1116 ASTFileSignature Signature = ASTFileSignature::create(Hash);
1117
1118 return std::make_pair(ASTBlockHash, Signature);
1119}
1120
1121ASTFileSignature ASTWriter::writeUnhashedControlBlock(Preprocessor &PP,
1122 ASTContext &Context) {
1123 using namespace llvm;
1124
1125 // Flush first to prepare the PCM hash (signature).
1126 Stream.FlushToWord();
1127 auto StartOfUnhashedControl = Stream.GetCurrentBitNo() >> 3;
1128
1129 // Enter the block and prepare to write records.
1130 RecordData Record;
1131 Stream.EnterSubblock(UNHASHED_CONTROL_BLOCK_ID, 5);
1132
1133 // For implicit modules, write the hash of the PCM as its signature.
1134 ASTFileSignature Signature;
1135 if (WritingModule &&
1136 PP.getHeaderSearchInfo().getHeaderSearchOpts().ModulesHashContent) {
1137 ASTFileSignature ASTBlockHash;
1138 auto ASTBlockStartByte = ASTBlockRange.first >> 3;
1139 auto ASTBlockByteLength = (ASTBlockRange.second >> 3) - ASTBlockStartByte;
1140 std::tie(ASTBlockHash, Signature) = createSignature(
1141 StringRef(Buffer.begin(), StartOfUnhashedControl),
1142 StringRef(Buffer.begin() + ASTBlockStartByte, ASTBlockByteLength));
1143
1144 Record.append(ASTBlockHash.begin(), ASTBlockHash.end());
1145 Stream.EmitRecord(AST_BLOCK_HASH, Record);
1146 Record.clear();
1147 Record.append(Signature.begin(), Signature.end());
1148 Stream.EmitRecord(SIGNATURE, Record);
1149 Record.clear();
1150 }
1151
1152 // Diagnostic options.
1153 const auto &Diags = Context.getDiagnostics();
1154 const DiagnosticOptions &DiagOpts = Diags.getDiagnosticOptions();
1155#define DIAGOPT(Name, Bits, Default) Record.push_back(DiagOpts.Name);
1156#define ENUM_DIAGOPT(Name, Type, Bits, Default) \
1157 Record.push_back(static_cast<unsigned>(DiagOpts.get##Name()));
1158#include "clang/Basic/DiagnosticOptions.def"
1159 Record.push_back(DiagOpts.Warnings.size());
1160 for (unsigned I = 0, N = DiagOpts.Warnings.size(); I != N; ++I)
1161 AddString(DiagOpts.Warnings[I], Record);
1162 Record.push_back(DiagOpts.Remarks.size());
1163 for (unsigned I = 0, N = DiagOpts.Remarks.size(); I != N; ++I)
1164 AddString(DiagOpts.Remarks[I], Record);
1165 // Note: we don't serialize the log or serialization file names, because they
1166 // are generally transient files and will almost always be overridden.
1167 Stream.EmitRecord(DIAGNOSTIC_OPTIONS, Record);
1168 Record.clear();
1169
1170 // Write out the diagnostic/pragma mappings.
1171 WritePragmaDiagnosticMappings(Diags, /* isModule = */ WritingModule);
1172
1173 // Header search entry usage.
1174 auto HSEntryUsage = PP.getHeaderSearchInfo().computeUserEntryUsage();
1175 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1176 Abbrev->Add(BitCodeAbbrevOp(HEADER_SEARCH_ENTRY_USAGE));
1177 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // Number of bits.
1178 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Bit vector.
1179 unsigned HSUsageAbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1180 {
1181 RecordData::value_type Record[] = {HEADER_SEARCH_ENTRY_USAGE,
1182 HSEntryUsage.size()};
1183 Stream.EmitRecordWithBlob(HSUsageAbbrevCode, Record, bytes(HSEntryUsage));
1184 }
1185
1186 // Leave the options block.
1187 Stream.ExitBlock();
1188 return Signature;
1189}
1190
1191/// Write the control block.
1192void ASTWriter::WriteControlBlock(Preprocessor &PP, ASTContext &Context,
1193 StringRef isysroot,
1194 const std::string &OutputFile) {
1195 using namespace llvm;
1196
1197 Stream.EnterSubblock(CONTROL_BLOCK_ID, 5);
1198 RecordData Record;
1199
1200 // Metadata
1201 auto MetadataAbbrev = std::make_shared<BitCodeAbbrev>();
1202 MetadataAbbrev->Add(BitCodeAbbrevOp(METADATA));
1203 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Major
1204 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Minor
1205 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang maj.
1206 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang min.
1207 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Relocatable
1208 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Timestamps
1209 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Errors
1210 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // SVN branch/tag
1211 unsigned MetadataAbbrevCode = Stream.EmitAbbrev(std::move(MetadataAbbrev));
1212 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?\""
, "clang/lib/Serialization/ASTWriter.cpp", 1213, __extension__
__PRETTY_FUNCTION__))
1213 "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?\""
, "clang/lib/Serialization/ASTWriter.cpp", 1213, __extension__
__PRETTY_FUNCTION__))
;
1214 {
1215 RecordData::value_type Record[] = {
1216 METADATA,
1217 VERSION_MAJOR,
1218 VERSION_MINOR,
1219 CLANG_VERSION_MAJOR14,
1220 CLANG_VERSION_MINOR0,
1221 !isysroot.empty(),
1222 IncludeTimestamps,
1223 ASTHasCompilerErrors};
1224 Stream.EmitRecordWithBlob(MetadataAbbrevCode, Record,
1225 getClangFullRepositoryVersion());
1226 }
1227
1228 if (WritingModule) {
1229 // Module name
1230 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1231 Abbrev->Add(BitCodeAbbrevOp(MODULE_NAME));
1232 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
1233 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1234 RecordData::value_type Record[] = {MODULE_NAME};
1235 Stream.EmitRecordWithBlob(AbbrevCode, Record, WritingModule->Name);
1236 }
1237
1238 if (WritingModule && WritingModule->Directory) {
1239 SmallString<128> BaseDir(WritingModule->Directory->getName());
1240 cleanPathForOutput(Context.getSourceManager().getFileManager(), BaseDir);
1241
1242 // If the home of the module is the current working directory, then we
1243 // want to pick up the cwd of the build process loading the module, not
1244 // our cwd, when we load this module.
1245 if (!PP.getHeaderSearchInfo()
1246 .getHeaderSearchOpts()
1247 .ModuleMapFileHomeIsCwd ||
1248 WritingModule->Directory->getName() != StringRef(".")) {
1249 // Module directory.
1250 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1251 Abbrev->Add(BitCodeAbbrevOp(MODULE_DIRECTORY));
1252 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Directory
1253 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1254
1255 RecordData::value_type Record[] = {MODULE_DIRECTORY};
1256 Stream.EmitRecordWithBlob(AbbrevCode, Record, BaseDir);
1257 }
1258
1259 // Write out all other paths relative to the base directory if possible.
1260 BaseDirectory.assign(BaseDir.begin(), BaseDir.end());
1261 } else if (!isysroot.empty()) {
1262 // Write out paths relative to the sysroot if possible.
1263 BaseDirectory = std::string(isysroot);
1264 }
1265
1266 // Module map file
1267 if (WritingModule && WritingModule->Kind == Module::ModuleMapModule) {
1268 Record.clear();
1269
1270 auto &Map = PP.getHeaderSearchInfo().getModuleMap();
1271 AddPath(WritingModule->PresumedModuleMapFile.empty()
1272 ? Map.getModuleMapFileForUniquing(WritingModule)->getName()
1273 : StringRef(WritingModule->PresumedModuleMapFile),
1274 Record);
1275
1276 // Additional module map files.
1277 if (auto *AdditionalModMaps =
1278 Map.getAdditionalModuleMapFiles(WritingModule)) {
1279 Record.push_back(AdditionalModMaps->size());
1280 for (const FileEntry *F : *AdditionalModMaps)
1281 AddPath(F->getName(), Record);
1282 } else {
1283 Record.push_back(0);
1284 }
1285
1286 Stream.EmitRecord(MODULE_MAP_FILE, Record);
1287 }
1288
1289 // Imports
1290 if (Chain) {
1291 serialization::ModuleManager &Mgr = Chain->getModuleManager();
1292 Record.clear();
1293
1294 for (ModuleFile &M : Mgr) {
1295 // Skip modules that weren't directly imported.
1296 if (!M.isDirectlyImported())
1297 continue;
1298
1299 Record.push_back((unsigned)M.Kind); // FIXME: Stable encoding
1300 AddSourceLocation(M.ImportLoc, Record);
1301
1302 // If we have calculated signature, there is no need to store
1303 // the size or timestamp.
1304 Record.push_back(M.Signature ? 0 : M.File->getSize());
1305 Record.push_back(M.Signature ? 0 : getTimestampForOutput(M.File));
1306
1307 for (auto I : M.Signature)
1308 Record.push_back(I);
1309
1310 AddString(M.ModuleName, Record);
1311 AddPath(M.FileName, Record);
1312 }
1313 Stream.EmitRecord(IMPORTS, Record);
1314 }
1315
1316 // Write the options block.
1317 Stream.EnterSubblock(OPTIONS_BLOCK_ID, 4);
1318
1319 // Language options.
1320 Record.clear();
1321 const LangOptions &LangOpts = Context.getLangOpts();
1322#define LANGOPT(Name, Bits, Default, Description) \
1323 Record.push_back(LangOpts.Name);
1324#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1325 Record.push_back(static_cast<unsigned>(LangOpts.get##Name()));
1326#include "clang/Basic/LangOptions.def"
1327#define SANITIZER(NAME, ID) \
1328 Record.push_back(LangOpts.Sanitize.has(SanitizerKind::ID));
1329#include "clang/Basic/Sanitizers.def"
1330
1331 Record.push_back(LangOpts.ModuleFeatures.size());
1332 for (StringRef Feature : LangOpts.ModuleFeatures)
1333 AddString(Feature, Record);
1334
1335 Record.push_back((unsigned) LangOpts.ObjCRuntime.getKind());
1336 AddVersionTuple(LangOpts.ObjCRuntime.getVersion(), Record);
1337
1338 AddString(LangOpts.CurrentModule, Record);
1339
1340 // Comment options.
1341 Record.push_back(LangOpts.CommentOpts.BlockCommandNames.size());
1342 for (const auto &I : LangOpts.CommentOpts.BlockCommandNames) {
1343 AddString(I, Record);
1344 }
1345 Record.push_back(LangOpts.CommentOpts.ParseAllComments);
1346
1347 // OpenMP offloading options.
1348 Record.push_back(LangOpts.OMPTargetTriples.size());
1349 for (auto &T : LangOpts.OMPTargetTriples)
1350 AddString(T.getTriple(), Record);
1351
1352 AddString(LangOpts.OMPHostIRFile, Record);
1353
1354 Stream.EmitRecord(LANGUAGE_OPTIONS, Record);
1355
1356 // Target options.
1357 Record.clear();
1358 const TargetInfo &Target = Context.getTargetInfo();
1359 const TargetOptions &TargetOpts = Target.getTargetOpts();
1360 AddString(TargetOpts.Triple, Record);
1361 AddString(TargetOpts.CPU, Record);
1362 AddString(TargetOpts.TuneCPU, Record);
1363 AddString(TargetOpts.ABI, Record);
1364 Record.push_back(TargetOpts.FeaturesAsWritten.size());
1365 for (unsigned I = 0, N = TargetOpts.FeaturesAsWritten.size(); I != N; ++I) {
1366 AddString(TargetOpts.FeaturesAsWritten[I], Record);
1367 }
1368 Record.push_back(TargetOpts.Features.size());
1369 for (unsigned I = 0, N = TargetOpts.Features.size(); I != N; ++I) {
1370 AddString(TargetOpts.Features[I], Record);
1371 }
1372 Stream.EmitRecord(TARGET_OPTIONS, Record);
1373
1374 // File system options.
1375 Record.clear();
1376 const FileSystemOptions &FSOpts =
1377 Context.getSourceManager().getFileManager().getFileSystemOpts();
1378 AddString(FSOpts.WorkingDir, Record);
1379 Stream.EmitRecord(FILE_SYSTEM_OPTIONS, Record);
1380
1381 // Header search options.
1382 Record.clear();
1383 const HeaderSearchOptions &HSOpts
1384 = PP.getHeaderSearchInfo().getHeaderSearchOpts();
1385 AddString(HSOpts.Sysroot, Record);
1386
1387 // Include entries.
1388 Record.push_back(HSOpts.UserEntries.size());
1389 for (unsigned I = 0, N = HSOpts.UserEntries.size(); I != N; ++I) {
1390 const HeaderSearchOptions::Entry &Entry = HSOpts.UserEntries[I];
1391 AddString(Entry.Path, Record);
1392 Record.push_back(static_cast<unsigned>(Entry.Group));
1393 Record.push_back(Entry.IsFramework);
1394 Record.push_back(Entry.IgnoreSysRoot);
1395 }
1396
1397 // System header prefixes.
1398 Record.push_back(HSOpts.SystemHeaderPrefixes.size());
1399 for (unsigned I = 0, N = HSOpts.SystemHeaderPrefixes.size(); I != N; ++I) {
1400 AddString(HSOpts.SystemHeaderPrefixes[I].Prefix, Record);
1401 Record.push_back(HSOpts.SystemHeaderPrefixes[I].IsSystemHeader);
1402 }
1403
1404 AddString(HSOpts.ResourceDir, Record);
1405 AddString(HSOpts.ModuleCachePath, Record);
1406 AddString(HSOpts.ModuleUserBuildPath, Record);
1407 Record.push_back(HSOpts.DisableModuleHash);
1408 Record.push_back(HSOpts.ImplicitModuleMaps);
1409 Record.push_back(HSOpts.ModuleMapFileHomeIsCwd);
1410 Record.push_back(HSOpts.EnablePrebuiltImplicitModules);
1411 Record.push_back(HSOpts.UseBuiltinIncludes);
1412 Record.push_back(HSOpts.UseStandardSystemIncludes);
1413 Record.push_back(HSOpts.UseStandardCXXIncludes);
1414 Record.push_back(HSOpts.UseLibcxx);
1415 // Write out the specific module cache path that contains the module files.
1416 AddString(PP.getHeaderSearchInfo().getModuleCachePath(), Record);
1417 Stream.EmitRecord(HEADER_SEARCH_OPTIONS, Record);
1418
1419 // Preprocessor options.
1420 Record.clear();
1421 const PreprocessorOptions &PPOpts = PP.getPreprocessorOpts();
1422
1423 // Macro definitions.
1424 Record.push_back(PPOpts.Macros.size());
1425 for (unsigned I = 0, N = PPOpts.Macros.size(); I != N; ++I) {
1426 AddString(PPOpts.Macros[I].first, Record);
1427 Record.push_back(PPOpts.Macros[I].second);
1428 }
1429
1430 // Includes
1431 Record.push_back(PPOpts.Includes.size());
1432 for (unsigned I = 0, N = PPOpts.Includes.size(); I != N; ++I)
1433 AddString(PPOpts.Includes[I], Record);
1434
1435 // Macro includes
1436 Record.push_back(PPOpts.MacroIncludes.size());
1437 for (unsigned I = 0, N = PPOpts.MacroIncludes.size(); I != N; ++I)
1438 AddString(PPOpts.MacroIncludes[I], Record);
1439
1440 Record.push_back(PPOpts.UsePredefines);
1441 // Detailed record is important since it is used for the module cache hash.
1442 Record.push_back(PPOpts.DetailedRecord);
1443 AddString(PPOpts.ImplicitPCHInclude, Record);
1444 Record.push_back(static_cast<unsigned>(PPOpts.ObjCXXARCStandardLibrary));
1445 Stream.EmitRecord(PREPROCESSOR_OPTIONS, Record);
1446
1447 // Leave the options block.
1448 Stream.ExitBlock();
1449
1450 // Original file name and file ID
1451 SourceManager &SM = Context.getSourceManager();
1452 if (const FileEntry *MainFile = SM.getFileEntryForID(SM.getMainFileID())) {
1453 auto FileAbbrev = std::make_shared<BitCodeAbbrev>();
1454 FileAbbrev->Add(BitCodeAbbrevOp(ORIGINAL_FILE));
1455 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // File ID
1456 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1457 unsigned FileAbbrevCode = Stream.EmitAbbrev(std::move(FileAbbrev));
1458
1459 Record.clear();
1460 Record.push_back(ORIGINAL_FILE);
1461 Record.push_back(SM.getMainFileID().getOpaqueValue());
1462 EmitRecordWithPath(FileAbbrevCode, Record, MainFile->getName());
1463 }
1464
1465 Record.clear();
1466 Record.push_back(SM.getMainFileID().getOpaqueValue());
1467 Stream.EmitRecord(ORIGINAL_FILE_ID, Record);
1468
1469 // Original PCH directory
1470 if (!OutputFile.empty() && OutputFile != "-") {
1471 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1472 Abbrev->Add(BitCodeAbbrevOp(ORIGINAL_PCH_DIR));
1473 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1474 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1475
1476 SmallString<128> OutputPath(OutputFile);
1477
1478 SM.getFileManager().makeAbsolutePath(OutputPath);
1479 StringRef origDir = llvm::sys::path::parent_path(OutputPath);
1480
1481 RecordData::value_type Record[] = {ORIGINAL_PCH_DIR};
1482 Stream.EmitRecordWithBlob(AbbrevCode, Record, origDir);
1483 }
1484
1485 std::set<const FileEntry *> AffectingModuleMaps;
1486 if (WritingModule) {
1487 AffectingModuleMaps =
1488 GetAllModuleMaps(PP.getHeaderSearchInfo(), WritingModule);
1489 }
1490
1491 WriteInputFiles(Context.SourceMgr,
1492 PP.getHeaderSearchInfo().getHeaderSearchOpts(),
1493 AffectingModuleMaps);
1494 Stream.ExitBlock();
1495}
1496
1497namespace {
1498
1499/// An input file.
1500struct InputFileEntry {
1501 const FileEntry *File;
1502 bool IsSystemFile;
1503 bool IsTransient;
1504 bool BufferOverridden;
1505 bool IsTopLevelModuleMap;
1506 uint32_t ContentHash[2];
1507};
1508
1509} // namespace
1510
1511void ASTWriter::WriteInputFiles(
1512 SourceManager &SourceMgr, HeaderSearchOptions &HSOpts,
1513 std::set<const FileEntry *> &AffectingModuleMaps) {
1514 using namespace llvm;
1515
1516 Stream.EnterSubblock(INPUT_FILES_BLOCK_ID, 4);
1517
1518 // Create input-file abbreviation.
1519 auto IFAbbrev = std::make_shared<BitCodeAbbrev>();
1520 IFAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE));
1521 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
1522 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 12)); // Size
1523 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // Modification time
1524 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Overridden
1525 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Transient
1526 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Module map
1527 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1528 unsigned IFAbbrevCode = Stream.EmitAbbrev(std::move(IFAbbrev));
1529
1530 // Create input file hash abbreviation.
1531 auto IFHAbbrev = std::make_shared<BitCodeAbbrev>();
1532 IFHAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE_HASH));
1533 IFHAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1534 IFHAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1535 unsigned IFHAbbrevCode = Stream.EmitAbbrev(std::move(IFHAbbrev));
1536
1537 // Get all ContentCache objects for files, sorted by whether the file is a
1538 // system one or not. System files go at the back, users files at the front.
1539 std::deque<InputFileEntry> SortedFiles;
1540 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size(); I != N; ++I) {
1541 // Get this source location entry.
1542 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
1543 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"
, "clang/lib/Serialization/ASTWriter.cpp", 1543, __extension__
__PRETTY_FUNCTION__))
;
1544
1545 // We only care about file entries that were not overridden.
1546 if (!SLoc->isFile())
1547 continue;
1548 const SrcMgr::FileInfo &File = SLoc->getFile();
1549 const SrcMgr::ContentCache *Cache = &File.getContentCache();
1550 if (!Cache->OrigEntry)
1551 continue;
1552
1553 if (isModuleMap(File.getFileCharacteristic()) &&
1554 !isSystem(File.getFileCharacteristic()) &&
1555 !AffectingModuleMaps.empty() &&
1556 AffectingModuleMaps.find(Cache->OrigEntry) ==
1557 AffectingModuleMaps.end()) {
1558 SkippedModuleMaps.insert(Cache->OrigEntry);
1559 // Do not emit modulemaps that do not affect current module.
1560 continue;
1561 }
1562
1563 InputFileEntry Entry;
1564 Entry.File = Cache->OrigEntry;
1565 Entry.IsSystemFile = isSystem(File.getFileCharacteristic());
1566 Entry.IsTransient = Cache->IsTransient;
1567 Entry.BufferOverridden = Cache->BufferOverridden;
1568 Entry.IsTopLevelModuleMap = isModuleMap(File.getFileCharacteristic()) &&
1569 File.getIncludeLoc().isInvalid();
1570
1571 auto ContentHash = hash_code(-1);
1572 if (PP->getHeaderSearchInfo()
1573 .getHeaderSearchOpts()
1574 .ValidateASTInputFilesContent) {
1575 auto MemBuff = Cache->getBufferIfLoaded();
1576 if (MemBuff)
1577 ContentHash = hash_value(MemBuff->getBuffer());
1578 else
1579 // FIXME: The path should be taken from the FileEntryRef.
1580 PP->Diag(SourceLocation(), diag::err_module_unable_to_hash_content)
1581 << Entry.File->getName();
1582 }
1583 auto CH = llvm::APInt(64, ContentHash);
1584 Entry.ContentHash[0] =
1585 static_cast<uint32_t>(CH.getLoBits(32).getZExtValue());
1586 Entry.ContentHash[1] =
1587 static_cast<uint32_t>(CH.getHiBits(32).getZExtValue());
1588
1589 if (Entry.IsSystemFile)
1590 SortedFiles.push_back(Entry);
1591 else
1592 SortedFiles.push_front(Entry);
1593 }
1594
1595 unsigned UserFilesNum = 0;
1596 // Write out all of the input files.
1597 std::vector<uint64_t> InputFileOffsets;
1598 for (const auto &Entry : SortedFiles) {
1599 uint32_t &InputFileID = InputFileIDs[Entry.File];
1600 if (InputFileID != 0)
1601 continue; // already recorded this file.
1602
1603 // Record this entry's offset.
1604 InputFileOffsets.push_back(Stream.GetCurrentBitNo());
1605
1606 InputFileID = InputFileOffsets.size();
1607
1608 if (!Entry.IsSystemFile)
1609 ++UserFilesNum;
1610
1611 // Emit size/modification time for this file.
1612 // And whether this file was overridden.
1613 {
1614 RecordData::value_type Record[] = {
1615 INPUT_FILE,
1616 InputFileOffsets.size(),
1617 (uint64_t)Entry.File->getSize(),
1618 (uint64_t)getTimestampForOutput(Entry.File),
1619 Entry.BufferOverridden,
1620 Entry.IsTransient,
1621 Entry.IsTopLevelModuleMap};
1622
1623 // FIXME: The path should be taken from the FileEntryRef.
1624 EmitRecordWithPath(IFAbbrevCode, Record, Entry.File->getName());
1625 }
1626
1627 // Emit content hash for this file.
1628 {
1629 RecordData::value_type Record[] = {INPUT_FILE_HASH, Entry.ContentHash[0],
1630 Entry.ContentHash[1]};
1631 Stream.EmitRecordWithAbbrev(IFHAbbrevCode, Record);
1632 }
1633 }
1634
1635 Stream.ExitBlock();
1636
1637 // Create input file offsets abbreviation.
1638 auto OffsetsAbbrev = std::make_shared<BitCodeAbbrev>();
1639 OffsetsAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE_OFFSETS));
1640 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # input files
1641 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # non-system
1642 // input files
1643 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Array
1644 unsigned OffsetsAbbrevCode = Stream.EmitAbbrev(std::move(OffsetsAbbrev));
1645
1646 // Write input file offsets.
1647 RecordData::value_type Record[] = {INPUT_FILE_OFFSETS,
1648 InputFileOffsets.size(), UserFilesNum};
1649 Stream.EmitRecordWithBlob(OffsetsAbbrevCode, Record, bytes(InputFileOffsets));
1650}
1651
1652//===----------------------------------------------------------------------===//
1653// Source Manager Serialization
1654//===----------------------------------------------------------------------===//
1655
1656/// Create an abbreviation for the SLocEntry that refers to a
1657/// file.
1658static unsigned CreateSLocFileAbbrev(llvm::BitstreamWriter &Stream) {
1659 using namespace llvm;
1660
1661 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1662 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_FILE_ENTRY));
1663 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1664 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1665 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1666 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1667 // FileEntry fields.
1668 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Input File ID
1669 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumCreatedFIDs
1670 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 24)); // FirstDeclIndex
1671 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumDecls
1672 return Stream.EmitAbbrev(std::move(Abbrev));
1673}
1674
1675/// Create an abbreviation for the SLocEntry that refers to a
1676/// buffer.
1677static unsigned CreateSLocBufferAbbrev(llvm::BitstreamWriter &Stream) {
1678 using namespace llvm;
1679
1680 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1681 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_BUFFER_ENTRY));
1682 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1683 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1684 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1685 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1686 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Buffer name blob
1687 return Stream.EmitAbbrev(std::move(Abbrev));
1688}
1689
1690/// Create an abbreviation for the SLocEntry that refers to a
1691/// buffer's blob.
1692static unsigned CreateSLocBufferBlobAbbrev(llvm::BitstreamWriter &Stream,
1693 bool Compressed) {
1694 using namespace llvm;
1695
1696 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1697 Abbrev->Add(BitCodeAbbrevOp(Compressed ? SM_SLOC_BUFFER_BLOB_COMPRESSED
1698 : SM_SLOC_BUFFER_BLOB));
1699 if (Compressed)
1700 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Uncompressed size
1701 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Blob
1702 return Stream.EmitAbbrev(std::move(Abbrev));
1703}
1704
1705/// Create an abbreviation for the SLocEntry that refers to a macro
1706/// expansion.
1707static unsigned CreateSLocExpansionAbbrev(llvm::BitstreamWriter &Stream) {
1708 using namespace llvm;
1709
1710 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1711 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_EXPANSION_ENTRY));
1712 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1713 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Spelling location
1714 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Start location
1715 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // End location
1716 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Is token range
1717 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Token length
1718 return Stream.EmitAbbrev(std::move(Abbrev));
1719}
1720
1721/// Emit key length and data length as ULEB-encoded data, and return them as a
1722/// pair.
1723static std::pair<unsigned, unsigned>
1724emitULEBKeyDataLength(unsigned KeyLen, unsigned DataLen, raw_ostream &Out) {
1725 llvm::encodeULEB128(KeyLen, Out);
1726 llvm::encodeULEB128(DataLen, Out);
1727 return std::make_pair(KeyLen, DataLen);
1728}
1729
1730namespace {
1731
1732 // Trait used for the on-disk hash table of header search information.
1733 class HeaderFileInfoTrait {
1734 ASTWriter &Writer;
1735
1736 // Keep track of the framework names we've used during serialization.
1737 SmallString<128> FrameworkStringData;
1738 llvm::StringMap<unsigned> FrameworkNameOffset;
1739
1740 public:
1741 HeaderFileInfoTrait(ASTWriter &Writer) : Writer(Writer) {}
1742
1743 struct key_type {
1744 StringRef Filename;
1745 off_t Size;
1746 time_t ModTime;
1747 };
1748 using key_type_ref = const key_type &;
1749
1750 using UnresolvedModule =
1751 llvm::PointerIntPair<Module *, 2, ModuleMap::ModuleHeaderRole>;
1752
1753 struct data_type {
1754 const HeaderFileInfo &HFI;
1755 ArrayRef<ModuleMap::KnownHeader> KnownHeaders;
1756 UnresolvedModule Unresolved;
1757 };
1758 using data_type_ref = const data_type &;
1759
1760 using hash_value_type = unsigned;
1761 using offset_type = unsigned;
1762
1763 hash_value_type ComputeHash(key_type_ref key) {
1764 // The hash is based only on size/time of the file, so that the reader can
1765 // match even when symlinking or excess path elements ("foo/../", "../")
1766 // change the form of the name. However, complete path is still the key.
1767 return llvm::hash_combine(key.Size, key.ModTime);
1768 }
1769
1770 std::pair<unsigned, unsigned>
1771 EmitKeyDataLength(raw_ostream& Out, key_type_ref key, data_type_ref Data) {
1772 unsigned KeyLen = key.Filename.size() + 1 + 8 + 8;
1773 unsigned DataLen = 1 + 2 + 4 + 4;
1774 for (auto ModInfo : Data.KnownHeaders)
1775 if (Writer.getLocalOrImportedSubmoduleID(ModInfo.getModule()))
1776 DataLen += 4;
1777 if (Data.Unresolved.getPointer())
1778 DataLen += 4;
1779 return emitULEBKeyDataLength(KeyLen, DataLen, Out);
1780 }
1781
1782 void EmitKey(raw_ostream& Out, key_type_ref key, unsigned KeyLen) {
1783 using namespace llvm::support;
1784
1785 endian::Writer LE(Out, little);
1786 LE.write<uint64_t>(key.Size);
1787 KeyLen -= 8;
1788 LE.write<uint64_t>(key.ModTime);
1789 KeyLen -= 8;
1790 Out.write(key.Filename.data(), KeyLen);
1791 }
1792
1793 void EmitData(raw_ostream &Out, key_type_ref key,
1794 data_type_ref Data, unsigned DataLen) {
1795 using namespace llvm::support;
1796
1797 endian::Writer LE(Out, little);
1798 uint64_t Start = Out.tell(); (void)Start;
1799
1800 unsigned char Flags = (Data.HFI.isImport << 5)
1801 | (Data.HFI.isPragmaOnce << 4)
1802 | (Data.HFI.DirInfo << 1)
1803 | Data.HFI.IndexHeaderMapHeader;
1804 LE.write<uint8_t>(Flags);
1805 LE.write<uint16_t>(Data.HFI.NumIncludes);
1806
1807 if (!Data.HFI.ControllingMacro)
1808 LE.write<uint32_t>(Data.HFI.ControllingMacroID);
1809 else
1810 LE.write<uint32_t>(Writer.getIdentifierRef(Data.HFI.ControllingMacro));
1811
1812 unsigned Offset = 0;
1813 if (!Data.HFI.Framework.empty()) {
1814 // If this header refers into a framework, save the framework name.
1815 llvm::StringMap<unsigned>::iterator Pos
1816 = FrameworkNameOffset.find(Data.HFI.Framework);
1817 if (Pos == FrameworkNameOffset.end()) {
1818 Offset = FrameworkStringData.size() + 1;
1819 FrameworkStringData.append(Data.HFI.Framework);
1820 FrameworkStringData.push_back(0);
1821
1822 FrameworkNameOffset[Data.HFI.Framework] = Offset;
1823 } else
1824 Offset = Pos->second;
1825 }
1826 LE.write<uint32_t>(Offset);
1827
1828 auto EmitModule = [&](Module *M, ModuleMap::ModuleHeaderRole Role) {
1829 if (uint32_t ModID = Writer.getLocalOrImportedSubmoduleID(M)) {
1830 uint32_t Value = (ModID << 2) | (unsigned)Role;
1831 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 1831, __extension__
__PRETTY_FUNCTION__))
;
1832 LE.write<uint32_t>(Value);
1833 }
1834 };
1835
1836 // FIXME: If the header is excluded, we should write out some
1837 // record of that fact.
1838 for (auto ModInfo : Data.KnownHeaders)
1839 EmitModule(ModInfo.getModule(), ModInfo.getRole());
1840 if (Data.Unresolved.getPointer())
1841 EmitModule(Data.Unresolved.getPointer(), Data.Unresolved.getInt());
1842
1843 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 1843, __extension__
__PRETTY_FUNCTION__))
;
1844 }
1845
1846 const char *strings_begin() const { return FrameworkStringData.begin(); }
1847 const char *strings_end() const { return FrameworkStringData.end(); }
1848 };
1849
1850} // namespace
1851
1852/// Write the header search block for the list of files that
1853///
1854/// \param HS The header search structure to save.
1855void ASTWriter::WriteHeaderSearch(const HeaderSearch &HS) {
1856 HeaderFileInfoTrait GeneratorTrait(*this);
1857 llvm::OnDiskChainedHashTableGenerator<HeaderFileInfoTrait> Generator;
1858 SmallVector<const char *, 4> SavedStrings;
1859 unsigned NumHeaderSearchEntries = 0;
1860
1861 // Find all unresolved headers for the current module. We generally will
1862 // have resolved them before we get here, but not necessarily: we might be
1863 // compiling a preprocessed module, where there is no requirement for the
1864 // original files to exist any more.
1865 const HeaderFileInfo Empty; // So we can take a reference.
1866 if (WritingModule) {
1867 llvm::SmallVector<Module *, 16> Worklist(1, WritingModule);
1868 while (!Worklist.empty()) {
1869 Module *M = Worklist.pop_back_val();
1870 // We don't care about headers in unimportable submodules.
1871 if (M->isUnimportable())
1872 continue;
1873
1874 // Map to disk files where possible, to pick up any missing stat
1875 // information. This also means we don't need to check the unresolved
1876 // headers list when emitting resolved headers in the first loop below.
1877 // FIXME: It'd be preferable to avoid doing this if we were given
1878 // sufficient stat information in the module map.
1879 HS.getModuleMap().resolveHeaderDirectives(M);
1880
1881 // If the file didn't exist, we can still create a module if we were given
1882 // enough information in the module map.
1883 for (auto U : M->MissingHeaders) {
1884 // Check that we were given enough information to build a module
1885 // without this file existing on disk.
1886 if (!U.Size || (!U.ModTime && IncludeTimestamps)) {
1887 PP->Diag(U.FileNameLoc, diag::err_module_no_size_mtime_for_header)
1888 << WritingModule->getFullModuleName() << U.Size.hasValue()
1889 << U.FileName;
1890 continue;
1891 }
1892
1893 // Form the effective relative pathname for the file.
1894 SmallString<128> Filename(M->Directory->getName());
1895 llvm::sys::path::append(Filename, U.FileName);
1896 PreparePathForOutput(Filename);
1897
1898 StringRef FilenameDup = strdup(Filename.c_str());
1899 SavedStrings.push_back(FilenameDup.data());
1900
1901 HeaderFileInfoTrait::key_type Key = {
1902 FilenameDup, *U.Size, IncludeTimestamps ? *U.ModTime : 0
1903 };
1904 HeaderFileInfoTrait::data_type Data = {
1905 Empty, {}, {M, ModuleMap::headerKindToRole(U.Kind)}
1906 };
1907 // FIXME: Deal with cases where there are multiple unresolved header
1908 // directives in different submodules for the same header.
1909 Generator.insert(Key, Data, GeneratorTrait);
1910 ++NumHeaderSearchEntries;
1911 }
1912
1913 Worklist.append(M->submodule_begin(), M->submodule_end());
1914 }
1915 }
1916
1917 SmallVector<const FileEntry *, 16> FilesByUID;
1918 HS.getFileMgr().GetUniqueIDMapping(FilesByUID);
1919
1920 if (FilesByUID.size() > HS.header_file_size())
1921 FilesByUID.resize(HS.header_file_size());
1922
1923 for (unsigned UID = 0, LastUID = FilesByUID.size(); UID != LastUID; ++UID) {
1924 const FileEntry *File = FilesByUID[UID];
1925 if (!File)
1926 continue;
1927
1928 // Get the file info. This will load info from the external source if
1929 // necessary. Skip emitting this file if we have no information on it
1930 // as a header file (in which case HFI will be null) or if it hasn't
1931 // changed since it was loaded. Also skip it if it's for a modular header
1932 // from a different module; in that case, we rely on the module(s)
1933 // containing the header to provide this information.
1934 const HeaderFileInfo *HFI =
1935 HS.getExistingFileInfo(File, /*WantExternal*/!Chain);
1936 if (!HFI || (HFI->isModuleHeader && !HFI->isCompilingModuleHeader))
1937 continue;
1938
1939 // Massage the file path into an appropriate form.
1940 StringRef Filename = File->getName();
1941 SmallString<128> FilenameTmp(Filename);
1942 if (PreparePathForOutput(FilenameTmp)) {
1943 // If we performed any translation on the file name at all, we need to
1944 // save this string, since the generator will refer to it later.
1945 Filename = StringRef(strdup(FilenameTmp.c_str()));
1946 SavedStrings.push_back(Filename.data());
1947 }
1948
1949 HeaderFileInfoTrait::key_type Key = {
1950 Filename, File->getSize(), getTimestampForOutput(File)
1951 };
1952 HeaderFileInfoTrait::data_type Data = {
1953 *HFI, HS.getModuleMap().findResolvedModulesForHeader(File), {}
1954 };
1955 Generator.insert(Key, Data, GeneratorTrait);
1956 ++NumHeaderSearchEntries;
1957 }
1958
1959 // Create the on-disk hash table in a buffer.
1960 SmallString<4096> TableData;
1961 uint32_t BucketOffset;
1962 {
1963 using namespace llvm::support;
1964
1965 llvm::raw_svector_ostream Out(TableData);
1966 // Make sure that no bucket is at offset 0
1967 endian::write<uint32_t>(Out, 0, little);
1968 BucketOffset = Generator.Emit(Out, GeneratorTrait);
1969 }
1970
1971 // Create a blob abbreviation
1972 using namespace llvm;
1973
1974 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1975 Abbrev->Add(BitCodeAbbrevOp(HEADER_SEARCH_TABLE));
1976 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1977 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1978 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1979 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
1980 unsigned TableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
1981
1982 // Write the header search table
1983 RecordData::value_type Record[] = {HEADER_SEARCH_TABLE, BucketOffset,
1984 NumHeaderSearchEntries, TableData.size()};
1985 TableData.append(GeneratorTrait.strings_begin(),GeneratorTrait.strings_end());
1986 Stream.EmitRecordWithBlob(TableAbbrev, Record, TableData);
1987
1988 // Free all of the strings we had to duplicate.
1989 for (unsigned I = 0, N = SavedStrings.size(); I != N; ++I)
1990 free(const_cast<char *>(SavedStrings[I]));
1991}
1992
1993static void emitBlob(llvm::BitstreamWriter &Stream, StringRef Blob,
1994 unsigned SLocBufferBlobCompressedAbbrv,
1995 unsigned SLocBufferBlobAbbrv) {
1996 using RecordDataType = ASTWriter::RecordData::value_type;
1997
1998 // Compress the buffer if possible. We expect that almost all PCM
1999 // consumers will not want its contents.
2000 SmallString<0> CompressedBuffer;
2001 if (llvm::zlib::isAvailable()) {
2002 llvm::Error E = llvm::zlib::compress(Blob.drop_back(1), CompressedBuffer);
2003 if (!E) {
2004 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB_COMPRESSED,
2005 Blob.size() - 1};
2006 Stream.EmitRecordWithBlob(SLocBufferBlobCompressedAbbrv, Record,
2007 CompressedBuffer);
2008 return;
2009 }
2010 llvm::consumeError(std::move(E));
2011 }
2012
2013 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB};
2014 Stream.EmitRecordWithBlob(SLocBufferBlobAbbrv, Record, Blob);
2015}
2016
2017/// Writes the block containing the serialized form of the
2018/// source manager.
2019///
2020/// TODO: We should probably use an on-disk hash table (stored in a
2021/// blob), indexed based on the file name, so that we only create
2022/// entries for files that we actually need. In the common case (no
2023/// errors), we probably won't have to create file entries for any of
2024/// the files in the AST.
2025void ASTWriter::WriteSourceManagerBlock(SourceManager &SourceMgr,
2026 const Preprocessor &PP) {
2027 RecordData Record;
2028
2029 // Enter the source manager block.
2030 Stream.EnterSubblock(SOURCE_MANAGER_BLOCK_ID, 4);
2031 const uint64_t SourceManagerBlockOffset = Stream.GetCurrentBitNo();
2032
2033 // Abbreviations for the various kinds of source-location entries.
2034 unsigned SLocFileAbbrv = CreateSLocFileAbbrev(Stream);
2035 unsigned SLocBufferAbbrv = CreateSLocBufferAbbrev(Stream);
2036 unsigned SLocBufferBlobAbbrv = CreateSLocBufferBlobAbbrev(Stream, false);
2037 unsigned SLocBufferBlobCompressedAbbrv =
2038 CreateSLocBufferBlobAbbrev(Stream, true);
2039 unsigned SLocExpansionAbbrv = CreateSLocExpansionAbbrev(Stream);
2040
2041 // Write out the source location entry table. We skip the first
2042 // entry, which is always the same dummy entry.
2043 std::vector<uint32_t> SLocEntryOffsets;
2044 uint64_t SLocEntryOffsetsBase = Stream.GetCurrentBitNo();
2045 RecordData PreloadSLocs;
2046 SLocEntryOffsets.reserve(SourceMgr.local_sloc_entry_size() - 1);
2047 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size();
2048 I != N; ++I) {
2049 // Get this source location entry.
2050 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
2051 FileID FID = FileID::get(I);
2052 assert(&SourceMgr.getSLocEntry(FID) == SLoc)(static_cast <bool> (&SourceMgr.getSLocEntry(FID) ==
SLoc) ? void (0) : __assert_fail ("&SourceMgr.getSLocEntry(FID) == SLoc"
, "clang/lib/Serialization/ASTWriter.cpp", 2052, __extension__
__PRETTY_FUNCTION__))
;
2053
2054 // Record the offset of this source-location entry.
2055 uint64_t Offset = Stream.GetCurrentBitNo() - SLocEntryOffsetsBase;
2056 assert((Offset >> 32) == 0 && "SLocEntry offset too large")(static_cast <bool> ((Offset >> 32) == 0 &&
"SLocEntry offset too large") ? void (0) : __assert_fail ("(Offset >> 32) == 0 && \"SLocEntry offset too large\""
, "clang/lib/Serialization/ASTWriter.cpp", 2056, __extension__
__PRETTY_FUNCTION__))
;
2057 SLocEntryOffsets.push_back(Offset);
2058
2059 // Figure out which record code to use.
2060 unsigned Code;
2061 if (SLoc->isFile()) {
2062 const SrcMgr::ContentCache *Cache = &SLoc->getFile().getContentCache();
2063 if (Cache->OrigEntry) {
2064 Code = SM_SLOC_FILE_ENTRY;
2065 } else
2066 Code = SM_SLOC_BUFFER_ENTRY;
2067 } else
2068 Code = SM_SLOC_EXPANSION_ENTRY;
2069 Record.clear();
2070 Record.push_back(Code);
2071
2072 // Starting offset of this entry within this module, so skip the dummy.
2073 Record.push_back(SLoc->getOffset() - 2);
2074 if (SLoc->isFile()) {
2075 const SrcMgr::FileInfo &File = SLoc->getFile();
2076 const SrcMgr::ContentCache *Content = &File.getContentCache();
2077 if (Content->OrigEntry && !SkippedModuleMaps.empty() &&
2078 SkippedModuleMaps.find(Content->OrigEntry) !=
2079 SkippedModuleMaps.end()) {
2080 // Do not emit files that were not listed as inputs.
2081 continue;
2082 }
2083 AddSourceLocation(File.getIncludeLoc(), Record);
2084 Record.push_back(File.getFileCharacteristic()); // FIXME: stable encoding
2085 Record.push_back(File.hasLineDirectives());
2086
2087 bool EmitBlob = false;
2088 if (Content->OrigEntry) {
2089 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 2090, __extension__
__PRETTY_FUNCTION__))
2090 "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\""
, "clang/lib/Serialization/ASTWriter.cpp", 2090, __extension__
__PRETTY_FUNCTION__))
;
2091
2092 // The source location entry is a file. Emit input file ID.
2093 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 2093, __extension__
__PRETTY_FUNCTION__))
;
2094 Record.push_back(InputFileIDs[Content->OrigEntry]);
2095
2096 Record.push_back(File.NumCreatedFIDs);
2097
2098 FileDeclIDsTy::iterator FDI = FileDeclIDs.find(FID);
2099 if (FDI != FileDeclIDs.end()) {
2100 Record.push_back(FDI->second->FirstDeclIndex);
2101 Record.push_back(FDI->second->DeclIDs.size());
2102 } else {
2103 Record.push_back(0);
2104 Record.push_back(0);
2105 }
2106
2107 Stream.EmitRecordWithAbbrev(SLocFileAbbrv, Record);
2108
2109 if (Content->BufferOverridden || Content->IsTransient)
2110 EmitBlob = true;
2111 } else {
2112 // The source location entry is a buffer. The blob associated
2113 // with this entry contains the contents of the buffer.
2114
2115 // We add one to the size so that we capture the trailing NULL
2116 // that is required by llvm::MemoryBuffer::getMemBuffer (on
2117 // the reader side).
2118 llvm::Optional<llvm::MemoryBufferRef> Buffer =
2119 Content->getBufferOrNone(PP.getDiagnostics(), PP.getFileManager());
2120 StringRef Name = Buffer ? Buffer->getBufferIdentifier() : "";
2121 Stream.EmitRecordWithBlob(SLocBufferAbbrv, Record,
2122 StringRef(Name.data(), Name.size() + 1));
2123 EmitBlob = true;
2124
2125 if (Name == "<built-in>")
2126 PreloadSLocs.push_back(SLocEntryOffsets.size());
2127 }
2128
2129 if (EmitBlob) {
2130 // Include the implicit terminating null character in the on-disk buffer
2131 // if we're writing it uncompressed.
2132 llvm::Optional<llvm::MemoryBufferRef> Buffer =
2133 Content->getBufferOrNone(PP.getDiagnostics(), PP.getFileManager());
2134 if (!Buffer)
2135 Buffer = llvm::MemoryBufferRef("<<<INVALID BUFFER>>>", "");
2136 StringRef Blob(Buffer->getBufferStart(), Buffer->getBufferSize() + 1);
2137 emitBlob(Stream, Blob, SLocBufferBlobCompressedAbbrv,
2138 SLocBufferBlobAbbrv);
2139 }
2140 } else {
2141 // The source location entry is a macro expansion.
2142 const SrcMgr::ExpansionInfo &Expansion = SLoc->getExpansion();
2143 AddSourceLocation(Expansion.getSpellingLoc(), Record);
2144 AddSourceLocation(Expansion.getExpansionLocStart(), Record);
2145 AddSourceLocation(Expansion.isMacroArgExpansion()
2146 ? SourceLocation()
2147 : Expansion.getExpansionLocEnd(),
2148 Record);
2149 Record.push_back(Expansion.isExpansionTokenRange());
2150
2151 // Compute the token length for this macro expansion.
2152 SourceLocation::UIntTy NextOffset = SourceMgr.getNextLocalOffset();
2153 if (I + 1 != N)
2154 NextOffset = SourceMgr.getLocalSLocEntry(I + 1).getOffset();
2155 Record.push_back(NextOffset - SLoc->getOffset() - 1);
2156 Stream.EmitRecordWithAbbrev(SLocExpansionAbbrv, Record);
2157 }
2158 }
2159
2160 Stream.ExitBlock();
2161
2162 if (SLocEntryOffsets.empty())
2163 return;
2164
2165 // Write the source-location offsets table into the AST block. This
2166 // table is used for lazily loading source-location information.
2167 using namespace llvm;
2168
2169 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2170 Abbrev->Add(BitCodeAbbrevOp(SOURCE_LOCATION_OFFSETS));
2171 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs
2172 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // total size
2173 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // base offset
2174 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets
2175 unsigned SLocOffsetsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2176 {
2177 RecordData::value_type Record[] = {
2178 SOURCE_LOCATION_OFFSETS, SLocEntryOffsets.size(),
2179 SourceMgr.getNextLocalOffset() - 1 /* skip dummy */,
2180 SLocEntryOffsetsBase - SourceManagerBlockOffset};
2181 Stream.EmitRecordWithBlob(SLocOffsetsAbbrev, Record,
2182 bytes(SLocEntryOffsets));
2183 }
2184 // Write the source location entry preloads array, telling the AST
2185 // reader which source locations entries it should load eagerly.
2186 Stream.EmitRecord(SOURCE_LOCATION_PRELOADS, PreloadSLocs);
2187
2188 // Write the line table. It depends on remapping working, so it must come
2189 // after the source location offsets.
2190 if (SourceMgr.hasLineTable()) {
2191 LineTableInfo &LineTable = SourceMgr.getLineTable();
2192
2193 Record.clear();
2194
2195 // Emit the needed file names.
2196 llvm::DenseMap<int, int> FilenameMap;
2197 FilenameMap[-1] = -1; // For unspecified filenames.
2198 for (const auto &L : LineTable) {
2199 if (L.first.ID < 0)
2200 continue;
2201 for (auto &LE : L.second) {
2202 if (FilenameMap.insert(std::make_pair(LE.FilenameID,
2203 FilenameMap.size() - 1)).second)
2204 AddPath(LineTable.getFilename(LE.FilenameID), Record);
2205 }
2206 }
2207 Record.push_back(0);
2208
2209 // Emit the line entries
2210 for (const auto &L : LineTable) {
2211 // Only emit entries for local files.
2212 if (L.first.ID < 0)
2213 continue;
2214
2215 // Emit the file ID
2216 Record.push_back(L.first.ID);
2217
2218 // Emit the line entries
2219 Record.push_back(L.second.size());
2220 for (const auto &LE : L.second) {
2221 Record.push_back(LE.FileOffset);
2222 Record.push_back(LE.LineNo);
2223 Record.push_back(FilenameMap[LE.FilenameID]);
2224 Record.push_back((unsigned)LE.FileKind);
2225 Record.push_back(LE.IncludeOffset);
2226 }
2227 }
2228
2229 Stream.EmitRecord(SOURCE_MANAGER_LINE_TABLE, Record);
2230 }
2231}
2232
2233//===----------------------------------------------------------------------===//
2234// Preprocessor Serialization
2235//===----------------------------------------------------------------------===//
2236
2237static bool shouldIgnoreMacro(MacroDirective *MD, bool IsModule,
2238 const Preprocessor &PP) {
2239 if (MacroInfo *MI = MD->getMacroInfo())
2240 if (MI->isBuiltinMacro())
2241 return true;
2242
2243 if (IsModule) {
2244 SourceLocation Loc = MD->getLocation();
2245 if (Loc.isInvalid())
2246 return true;
2247 if (PP.getSourceManager().getFileID(Loc) == PP.getPredefinesFileID())
2248 return true;
2249 }
2250
2251 return false;
2252}
2253
2254/// Writes the block containing the serialized form of the
2255/// preprocessor.
2256void ASTWriter::WritePreprocessor(const Preprocessor &PP, bool IsModule) {
2257 uint64_t MacroOffsetsBase = Stream.GetCurrentBitNo();
2258
2259 PreprocessingRecord *PPRec = PP.getPreprocessingRecord();
2260 if (PPRec)
2261 WritePreprocessorDetail(*PPRec, MacroOffsetsBase);
2262
2263 RecordData Record;
2264 RecordData ModuleMacroRecord;
2265
2266 // If the preprocessor __COUNTER__ value has been bumped, remember it.
2267 if (PP.getCounterValue() != 0) {
2268 RecordData::value_type Record[] = {PP.getCounterValue()};
2269 Stream.EmitRecord(PP_COUNTER_VALUE, Record);
2270 }
2271
2272 if (PP.isRecordingPreamble() && PP.hasRecordedPreamble()) {
2273 assert(!IsModule)(static_cast <bool> (!IsModule) ? void (0) : __assert_fail
("!IsModule", "clang/lib/Serialization/ASTWriter.cpp", 2273,
__extension__ __PRETTY_FUNCTION__))
;
2274 auto SkipInfo = PP.getPreambleSkipInfo();
2275 if (SkipInfo.hasValue()) {
2276 Record.push_back(true);
2277 AddSourceLocation(SkipInfo->HashTokenLoc, Record);
2278 AddSourceLocation(SkipInfo->IfTokenLoc, Record);
2279 Record.push_back(SkipInfo->FoundNonSkipPortion);
2280 Record.push_back(SkipInfo->FoundElse);
2281 AddSourceLocation(SkipInfo->ElseLoc, Record);
2282 } else {
2283 Record.push_back(false);
2284 }
2285 for (const auto &Cond : PP.getPreambleConditionalStack()) {
2286 AddSourceLocation(Cond.IfLoc, Record);
2287 Record.push_back(Cond.WasSkipping);
2288 Record.push_back(Cond.FoundNonSkip);
2289 Record.push_back(Cond.FoundElse);
2290 }
2291 Stream.EmitRecord(PP_CONDITIONAL_STACK, Record);
2292 Record.clear();
2293 }
2294
2295 // Enter the preprocessor block.
2296 Stream.EnterSubblock(PREPROCESSOR_BLOCK_ID, 3);
2297
2298 // If the AST file contains __DATE__ or __TIME__ emit a warning about this.
2299 // FIXME: Include a location for the use, and say which one was used.
2300 if (PP.SawDateOrTime())
2301 PP.Diag(SourceLocation(), diag::warn_module_uses_date_time) << IsModule;
2302
2303 // Loop over all the macro directives that are live at the end of the file,
2304 // emitting each to the PP section.
2305
2306 // Construct the list of identifiers with macro directives that need to be
2307 // serialized.
2308 SmallVector<const IdentifierInfo *, 128> MacroIdentifiers;
2309 for (auto &Id : PP.getIdentifierTable())
2310 if (Id.second->hadMacroDefinition() &&
2311 (!Id.second->isFromAST() ||
2312 Id.second->hasChangedSinceDeserialization()))
2313 MacroIdentifiers.push_back(Id.second);
2314 // Sort the set of macro definitions that need to be serialized by the
2315 // name of the macro, to provide a stable ordering.
2316 llvm::sort(MacroIdentifiers, llvm::deref<std::less<>>());
2317
2318 // Emit the macro directives as a list and associate the offset with the
2319 // identifier they belong to.
2320 for (const IdentifierInfo *Name : MacroIdentifiers) {
2321 MacroDirective *MD = PP.getLocalMacroDirectiveHistory(Name);
2322 uint64_t StartOffset = Stream.GetCurrentBitNo() - MacroOffsetsBase;
2323 assert((StartOffset >> 32) == 0 && "Macro identifiers offset too large")(static_cast <bool> ((StartOffset >> 32) == 0 &&
"Macro identifiers offset too large") ? void (0) : __assert_fail
("(StartOffset >> 32) == 0 && \"Macro identifiers offset too large\""
, "clang/lib/Serialization/ASTWriter.cpp", 2323, __extension__
__PRETTY_FUNCTION__))
;
2324
2325 // Emit the macro directives in reverse source order.
2326 for (; MD; MD = MD->getPrevious()) {
2327 // Once we hit an ignored macro, we're done: the rest of the chain
2328 // will all be ignored macros.
2329 if (shouldIgnoreMacro(MD, IsModule, PP))
2330 break;
2331
2332 AddSourceLocation(MD->getLocation(), Record);
2333 Record.push_back(MD->getKind());
2334 if (auto *DefMD = dyn_cast<DefMacroDirective>(MD)) {
2335 Record.push_back(getMacroRef(DefMD->getInfo(), Name));
2336 } else if (auto *VisMD = dyn_cast<VisibilityMacroDirective>(MD)) {
2337 Record.push_back(VisMD->isPublic());
2338 }
2339 }
2340
2341 // Write out any exported module macros.
2342 bool EmittedModuleMacros = false;
2343 // We write out exported module macros for PCH as well.
2344 auto Leafs = PP.getLeafModuleMacros(Name);
2345 SmallVector<ModuleMacro*, 8> Worklist(Leafs.begin(), Leafs.end());
2346 llvm::DenseMap<ModuleMacro*, unsigned> Visits;
2347 while (!Worklist.empty()) {
2348 auto *Macro = Worklist.pop_back_val();
2349
2350 // Emit a record indicating this submodule exports this macro.
2351 ModuleMacroRecord.push_back(
2352 getSubmoduleID(Macro->getOwningModule()));
2353 ModuleMacroRecord.push_back(getMacroRef(Macro->getMacroInfo(), Name));
2354 for (auto *M : Macro->overrides())
2355 ModuleMacroRecord.push_back(getSubmoduleID(M->getOwningModule()));
2356
2357 Stream.EmitRecord(PP_MODULE_MACRO, ModuleMacroRecord);
2358 ModuleMacroRecord.clear();
2359
2360 // Enqueue overridden macros once we've visited all their ancestors.
2361 for (auto *M : Macro->overrides())
2362 if (++Visits[M] == M->getNumOverridingMacros())
2363 Worklist.push_back(M);
2364
2365 EmittedModuleMacros = true;
2366 }
2367
2368 if (Record.empty() && !EmittedModuleMacros)
2369 continue;
2370
2371 IdentMacroDirectivesOffsetMap[Name] = StartOffset;
2372 Stream.EmitRecord(PP_MACRO_DIRECTIVE_HISTORY, Record);
2373 Record.clear();
2374 }
2375
2376 /// Offsets of each of the macros into the bitstream, indexed by
2377 /// the local macro ID
2378 ///
2379 /// For each identifier that is associated with a macro, this map
2380 /// provides the offset into the bitstream where that macro is
2381 /// defined.
2382 std::vector<uint32_t> MacroOffsets;
2383
2384 for (unsigned I = 0, N = MacroInfosToEmit.size(); I != N; ++I) {
2385 const IdentifierInfo *Name = MacroInfosToEmit[I].Name;
2386 MacroInfo *MI = MacroInfosToEmit[I].MI;
2387 MacroID ID = MacroInfosToEmit[I].ID;
2388
2389 if (ID < FirstMacroID) {
2390 assert(0 && "Loaded MacroInfo entered MacroInfosToEmit ?")(static_cast <bool> (0 && "Loaded MacroInfo entered MacroInfosToEmit ?"
) ? void (0) : __assert_fail ("0 && \"Loaded MacroInfo entered MacroInfosToEmit ?\""
, "clang/lib/Serialization/ASTWriter.cpp", 2390, __extension__
__PRETTY_FUNCTION__))
;
2391 continue;
2392 }
2393
2394 // Record the local offset of this macro.
2395 unsigned Index = ID - FirstMacroID;
2396 if (Index >= MacroOffsets.size())
2397 MacroOffsets.resize(Index + 1);
2398
2399 uint64_t Offset = Stream.GetCurrentBitNo() - MacroOffsetsBase;
2400 assert((Offset >> 32) == 0 && "Macro offset too large")(static_cast <bool> ((Offset >> 32) == 0 &&
"Macro offset too large") ? void (0) : __assert_fail ("(Offset >> 32) == 0 && \"Macro offset too large\""
, "clang/lib/Serialization/ASTWriter.cpp", 2400, __extension__
__PRETTY_FUNCTION__))
;
2401 MacroOffsets[Index] = Offset;
2402
2403 AddIdentifierRef(Name, Record);
2404 AddSourceLocation(MI->getDefinitionLoc(), Record);
2405 AddSourceLocation(MI->getDefinitionEndLoc(), Record);
2406 Record.push_back(MI->isUsed());
2407 Record.push_back(MI->isUsedForHeaderGuard());
2408 unsigned Code;
2409 if (MI->isObjectLike()) {
2410 Code = PP_MACRO_OBJECT_LIKE;
2411 } else {
2412 Code = PP_MACRO_FUNCTION_LIKE;
2413
2414 Record.push_back(MI->isC99Varargs());
2415 Record.push_back(MI->isGNUVarargs());
2416 Record.push_back(MI->hasCommaPasting());
2417 Record.push_back(MI->getNumParams());
2418 for (const IdentifierInfo *Param : MI->params())
2419 AddIdentifierRef(Param, Record);
2420 }
2421
2422 // If we have a detailed preprocessing record, record the macro definition
2423 // ID that corresponds to this macro.
2424 if (PPRec)
2425 Record.push_back(MacroDefinitions[PPRec->findMacroDefinition(MI)]);
2426
2427 Stream.EmitRecord(Code, Record);
2428 Record.clear();
2429
2430 // Emit the tokens array.
2431 for (unsigned TokNo = 0, e = MI->getNumTokens(); TokNo != e; ++TokNo) {
2432 // Note that we know that the preprocessor does not have any annotation
2433 // tokens in it because they are created by the parser, and thus can't
2434 // be in a macro definition.
2435 const Token &Tok = MI->getReplacementToken(TokNo);
2436 AddToken(Tok, Record);
2437 Stream.EmitRecord(PP_TOKEN, Record);
2438 Record.clear();
2439 }
2440 ++NumMacros;
2441 }
2442
2443 Stream.ExitBlock();
2444
2445 // Write the offsets table for macro IDs.
2446 using namespace llvm;
2447
2448 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2449 Abbrev->Add(BitCodeAbbrevOp(MACRO_OFFSET));
2450 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of macros
2451 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
2452 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // base offset
2453 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2454
2455 unsigned MacroOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2456 {
2457 RecordData::value_type Record[] = {MACRO_OFFSET, MacroOffsets.size(),
2458 FirstMacroID - NUM_PREDEF_MACRO_IDS,
2459 MacroOffsetsBase - ASTBlockStartOffset};
2460 Stream.EmitRecordWithBlob(MacroOffsetAbbrev, Record, bytes(MacroOffsets));
2461 }
2462}
2463
2464void ASTWriter::WritePreprocessorDetail(PreprocessingRecord &PPRec,
2465 uint64_t MacroOffsetsBase) {
2466 if (PPRec.local_begin() == PPRec.local_end())
2467 return;
2468
2469 SmallVector<PPEntityOffset, 64> PreprocessedEntityOffsets;
2470
2471 // Enter the preprocessor block.
2472 Stream.EnterSubblock(PREPROCESSOR_DETAIL_BLOCK_ID, 3);
2473
2474 // If the preprocessor has a preprocessing record, emit it.
2475 unsigned NumPreprocessingRecords = 0;
2476 using namespace llvm;
2477
2478 // Set up the abbreviation for
2479 unsigned InclusionAbbrev = 0;
2480 {
2481 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2482 Abbrev->Add(BitCodeAbbrevOp(PPD_INCLUSION_DIRECTIVE));
2483 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // filename length
2484 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // in quotes
2485 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // kind
2486 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // imported module
2487 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2488 InclusionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2489 }
2490
2491 unsigned FirstPreprocessorEntityID
2492 = (Chain ? PPRec.getNumLoadedPreprocessedEntities() : 0)
2493 + NUM_PREDEF_PP_ENTITY_IDS;
2494 unsigned NextPreprocessorEntityID = FirstPreprocessorEntityID;
2495 RecordData Record;
2496 for (PreprocessingRecord::iterator E = PPRec.local_begin(),
2497 EEnd = PPRec.local_end();
2498 E != EEnd;
2499 (void)++E, ++NumPreprocessingRecords, ++NextPreprocessorEntityID) {
2500 Record.clear();
2501
2502 uint64_t Offset = Stream.GetCurrentBitNo() - MacroOffsetsBase;
2503 assert((Offset >> 32) == 0 && "Preprocessed entity offset too large")(static_cast <bool> ((Offset >> 32) == 0 &&
"Preprocessed entity offset too large") ? void (0) : __assert_fail
("(Offset >> 32) == 0 && \"Preprocessed entity offset too large\""
, "clang/lib/Serialization/ASTWriter.cpp", 2503, __extension__
__PRETTY_FUNCTION__))
;
2504 PreprocessedEntityOffsets.push_back(
2505 PPEntityOffset((*E)->getSourceRange(), Offset));
2506
2507 if (auto *MD = dyn_cast<MacroDefinitionRecord>(*E)) {
2508 // Record this macro definition's ID.
2509 MacroDefinitions[MD] = NextPreprocessorEntityID;
2510
2511 AddIdentifierRef(MD->getName(), Record);
2512 Stream.EmitRecord(PPD_MACRO_DEFINITION, Record);
2513 continue;
2514 }
2515
2516 if (auto *ME = dyn_cast<MacroExpansion>(*E)) {
2517 Record.push_back(ME->isBuiltinMacro());
2518 if (ME->isBuiltinMacro())
2519 AddIdentifierRef(ME->getName(), Record);
2520 else
2521 Record.push_back(MacroDefinitions[ME->getDefinition()]);
2522 Stream.EmitRecord(PPD_MACRO_EXPANSION, Record);
2523 continue;
2524 }
2525
2526 if (auto *ID = dyn_cast<InclusionDirective>(*E)) {
2527 Record.push_back(PPD_INCLUSION_DIRECTIVE);
2528 Record.push_back(ID->getFileName().size());
2529 Record.push_back(ID->wasInQuotes());
2530 Record.push_back(static_cast<unsigned>(ID->getKind()));
2531 Record.push_back(ID->importedModule());
2532 SmallString<64> Buffer;
2533 Buffer += ID->getFileName();
2534 // Check that the FileEntry is not null because it was not resolved and
2535 // we create a PCH even with compiler errors.
2536 if (ID->getFile())
2537 Buffer += ID->getFile()->getName();
2538 Stream.EmitRecordWithBlob(InclusionAbbrev, Record, Buffer);
2539 continue;
2540 }
2541
2542 llvm_unreachable("Unhandled PreprocessedEntity in ASTWriter")::llvm::llvm_unreachable_internal("Unhandled PreprocessedEntity in ASTWriter"
, "clang/lib/Serialization/ASTWriter.cpp", 2542)
;
2543 }
2544 Stream.ExitBlock();
2545
2546 // Write the offsets table for the preprocessing record.
2547 if (NumPreprocessingRecords > 0) {
2548 assert(PreprocessedEntityOffsets.size() == NumPreprocessingRecords)(static_cast <bool> (PreprocessedEntityOffsets.size() ==
NumPreprocessingRecords) ? void (0) : __assert_fail ("PreprocessedEntityOffsets.size() == NumPreprocessingRecords"
, "clang/lib/Serialization/ASTWriter.cpp", 2548, __extension__
__PRETTY_FUNCTION__))
;
2549
2550 // Write the offsets table for identifier IDs.
2551 using namespace llvm;
2552
2553 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2554 Abbrev->Add(BitCodeAbbrevOp(PPD_ENTITIES_OFFSETS));
2555 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first pp entity
2556 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2557 unsigned PPEOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2558
2559 RecordData::value_type Record[] = {PPD_ENTITIES_OFFSETS,
2560 FirstPreprocessorEntityID -
2561 NUM_PREDEF_PP_ENTITY_IDS};
2562 Stream.EmitRecordWithBlob(PPEOffsetAbbrev, Record,
2563 bytes(PreprocessedEntityOffsets));
2564 }
2565
2566 // Write the skipped region table for the preprocessing record.
2567 ArrayRef<SourceRange> SkippedRanges = PPRec.getSkippedRanges();
2568 if (SkippedRanges.size() > 0) {
2569 std::vector<PPSkippedRange> SerializedSkippedRanges;
2570 SerializedSkippedRanges.reserve(SkippedRanges.size());
2571 for (auto const& Range : SkippedRanges)
2572 SerializedSkippedRanges.emplace_back(Range);
2573
2574 using namespace llvm;
2575 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2576 Abbrev->Add(BitCodeAbbrevOp(PPD_SKIPPED_RANGES));
2577 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2578 unsigned PPESkippedRangeAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2579
2580 Record.clear();
2581 Record.push_back(PPD_SKIPPED_RANGES);
2582 Stream.EmitRecordWithBlob(PPESkippedRangeAbbrev, Record,
2583 bytes(SerializedSkippedRanges));
2584 }
2585}
2586
2587unsigned ASTWriter::getLocalOrImportedSubmoduleID(const Module *Mod) {
2588 if (!Mod)
2589 return 0;
2590
2591 auto Known = SubmoduleIDs.find(Mod);
2592 if (Known != SubmoduleIDs.end())
2593 return Known->second;
2594
2595 auto *Top = Mod->getTopLevelModule();
2596 if (Top != WritingModule &&
2597 (getLangOpts().CompilingPCH ||
2598 !Top->fullModuleNameIs(StringRef(getLangOpts().CurrentModule))))
2599 return 0;
2600
2601 return SubmoduleIDs[Mod] = NextSubmoduleID++;
2602}
2603
2604unsigned ASTWriter::getSubmoduleID(Module *Mod) {
2605 // FIXME: This can easily happen, if we have a reference to a submodule that
2606 // did not result in us loading a module file for that submodule. For
2607 // instance, a cross-top-level-module 'conflict' declaration will hit this.
2608 unsigned ID = getLocalOrImportedSubmoduleID(Mod);
2609 assert((ID || !Mod) &&(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\""
, "clang/lib/Serialization/ASTWriter.cpp", 2610, __extension__
__PRETTY_FUNCTION__))
2610 "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\""
, "clang/lib/Serialization/ASTWriter.cpp", 2610, __extension__
__PRETTY_FUNCTION__))
;
2611 return ID;
2612}
2613
2614/// Compute the number of modules within the given tree (including the
2615/// given module).
2616static unsigned getNumberOfModules(Module *Mod) {
2617 unsigned ChildModules = 0;
2618 for (auto Sub = Mod->submodule_begin(), SubEnd = Mod->submodule_end();
2619 Sub != SubEnd; ++Sub)
2620 ChildModules += getNumberOfModules(*Sub);
2621
2622 return ChildModules + 1;
2623}
2624
2625void ASTWriter::WriteSubmodules(Module *WritingModule) {
2626 // Enter the submodule description block.
2627 Stream.EnterSubblock(SUBMODULE_BLOCK_ID, /*bits for abbreviations*/5);
2628
2629 // Write the abbreviations needed for the submodules block.
2630 using namespace llvm;
2631
2632 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2633 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_DEFINITION));
2634 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
2635 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Parent
2636 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Kind
2637 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2638 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExplicit
2639 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsSystem
2640 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExternC
2641 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferSubmodules...
2642 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExplicit...
2643 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExportWild...
2644 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ConfigMacrosExh...
2645 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModuleMapIsPriv...
2646 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2647 unsigned DefinitionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2648
2649 Abbrev = std::make_shared<BitCodeAbbrev>();
2650 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_HEADER));
2651 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2652 unsigned UmbrellaAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2653
2654 Abbrev = std::make_shared<BitCodeAbbrev>();
2655 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_HEADER));
2656 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2657 unsigned HeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2658
2659 Abbrev = std::make_shared<BitCodeAbbrev>();
2660 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TOPHEADER));
2661 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2662 unsigned TopHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2663
2664 Abbrev = std::make_shared<BitCodeAbbrev>();
2665 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_DIR));
2666 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2667 unsigned UmbrellaDirAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2668
2669 Abbrev = std::make_shared<BitCodeAbbrev>();
2670 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_REQUIRES));
2671 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // State
2672 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Feature
2673 unsigned RequiresAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2674
2675 Abbrev = std::make_shared<BitCodeAbbrev>();
2676 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXCLUDED_HEADER));
2677 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2678 unsigned ExcludedHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2679
2680 Abbrev = std::make_shared<BitCodeAbbrev>();
2681 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TEXTUAL_HEADER));
2682 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2683 unsigned TextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2684
2685 Abbrev = std::make_shared<BitCodeAbbrev>();
2686 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_HEADER));
2687 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2688 unsigned PrivateHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2689
2690 Abbrev = std::make_shared<BitCodeAbbrev>();
2691 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_TEXTUAL_HEADER));
2692 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2693 unsigned PrivateTextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2694
2695 Abbrev = std::make_shared<BitCodeAbbrev>();
2696 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_LINK_LIBRARY));
2697 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2698 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2699 unsigned LinkLibraryAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2700
2701 Abbrev = std::make_shared<BitCodeAbbrev>();
2702 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFIG_MACRO));
2703 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2704 unsigned ConfigMacroAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2705
2706 Abbrev = std::make_shared<BitCodeAbbrev>();
2707 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFLICT));
2708 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Other module
2709 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Message
2710 unsigned ConflictAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2711
2712 Abbrev = std::make_shared<BitCodeAbbrev>();
2713 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXPORT_AS));
2714 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2715 unsigned ExportAsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2716
2717 // Write the submodule metadata block.
2718 RecordData::value_type Record[] = {
2719 getNumberOfModules(WritingModule),
2720 FirstSubmoduleID - NUM_PREDEF_SUBMODULE_IDS};
2721 Stream.EmitRecord(SUBMODULE_METADATA, Record);
2722
2723 // Write all of the submodules.
2724 std::queue<Module *> Q;
2725 Q.push(WritingModule);
2726 while (!Q.empty()) {
2727 Module *Mod = Q.front();
2728 Q.pop();
2729 unsigned ID = getSubmoduleID(Mod);
2730
2731 uint64_t ParentID = 0;
2732 if (Mod->Parent) {
2733 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?\""
, "clang/lib/Serialization/ASTWriter.cpp", 2733, __extension__
__PRETTY_FUNCTION__))
;
2734 ParentID = SubmoduleIDs[Mod->Parent];
2735 }
2736
2737 // Emit the definition of the block.
2738 {
2739 RecordData::value_type Record[] = {SUBMODULE_DEFINITION,
2740 ID,
2741 ParentID,
2742 (RecordData::value_type)Mod->Kind,
2743 Mod->IsFramework,
2744 Mod->IsExplicit,
2745 Mod->IsSystem,
2746 Mod->IsExternC,
2747 Mod->InferSubmodules,
2748 Mod->InferExplicitSubmodules,
2749 Mod->InferExportWildcard,
2750 Mod->ConfigMacrosExhaustive,
2751 Mod->ModuleMapIsPrivate};
2752 Stream.EmitRecordWithBlob(DefinitionAbbrev, Record, Mod->Name);
2753 }
2754
2755 // Emit the requirements.
2756 for (const auto &R : Mod->Requirements) {
2757 RecordData::value_type Record[] = {SUBMODULE_REQUIRES, R.second};
2758 Stream.EmitRecordWithBlob(RequiresAbbrev, Record, R.first);
2759 }
2760
2761 // Emit the umbrella header, if there is one.
2762 if (auto UmbrellaHeader = Mod->getUmbrellaHeader()) {
2763 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_HEADER};
2764 Stream.EmitRecordWithBlob(UmbrellaAbbrev, Record,
2765 UmbrellaHeader.NameAsWritten);
2766 } else if (auto UmbrellaDir = Mod->getUmbrellaDir()) {
2767 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_DIR};
2768 Stream.EmitRecordWithBlob(UmbrellaDirAbbrev, Record,
2769 UmbrellaDir.NameAsWritten);
2770 }
2771
2772 // Emit the headers.
2773 struct {
2774 unsigned RecordKind;
2775 unsigned Abbrev;
2776 Module::HeaderKind HeaderKind;
2777 } HeaderLists[] = {
2778 {SUBMODULE_HEADER, HeaderAbbrev, Module::HK_Normal},
2779 {SUBMODULE_TEXTUAL_HEADER, TextualHeaderAbbrev, Module::HK_Textual},
2780 {SUBMODULE_PRIVATE_HEADER, PrivateHeaderAbbrev, Module::HK_Private},
2781 {SUBMODULE_PRIVATE_TEXTUAL_HEADER, PrivateTextualHeaderAbbrev,
2782 Module::HK_PrivateTextual},
2783 {SUBMODULE_EXCLUDED_HEADER, ExcludedHeaderAbbrev, Module::HK_Excluded}
2784 };
2785 for (auto &HL : HeaderLists) {
2786 RecordData::value_type Record[] = {HL.RecordKind};
2787 for (auto &H : Mod->Headers[HL.HeaderKind])
2788 Stream.EmitRecordWithBlob(HL.Abbrev, Record, H.NameAsWritten);
2789 }
2790
2791 // Emit the top headers.
2792 {
2793 auto TopHeaders = Mod->getTopHeaders(PP->getFileManager());
2794 RecordData::value_type Record[] = {SUBMODULE_TOPHEADER};
2795 for (auto *H : TopHeaders)
2796 Stream.EmitRecordWithBlob(TopHeaderAbbrev, Record, H->getName());
2797 }
2798
2799 // Emit the imports.
2800 if (!Mod->Imports.empty()) {
2801 RecordData Record;
2802 for (auto *I : Mod->Imports)
2803 Record.push_back(getSubmoduleID(I));
2804 Stream.EmitRecord(SUBMODULE_IMPORTS, Record);
2805 }
2806
2807 // Emit the exports.
2808 if (!Mod->Exports.empty()) {
2809 RecordData Record;
2810 for (const auto &E : Mod->Exports) {
2811 // FIXME: This may fail; we don't require that all exported modules
2812 // are local or imported.
2813 Record.push_back(getSubmoduleID(E.getPointer()));
2814 Record.push_back(E.getInt());
2815 }
2816 Stream.EmitRecord(SUBMODULE_EXPORTS, Record);
2817 }
2818
2819 //FIXME: How do we emit the 'use'd modules? They may not be submodules.
2820 // Might be unnecessary as use declarations are only used to build the
2821 // module itself.
2822
2823 // Emit the link libraries.
2824 for (const auto &LL : Mod->LinkLibraries) {
2825 RecordData::value_type Record[] = {SUBMODULE_LINK_LIBRARY,
2826 LL.IsFramework};
2827 Stream.EmitRecordWithBlob(LinkLibraryAbbrev, Record, LL.Library);
2828 }
2829
2830 // Emit the conflicts.
2831 for (const auto &C : Mod->Conflicts) {
2832 // FIXME: This may fail; we don't require that all conflicting modules
2833 // are local or imported.
2834 RecordData::value_type Record[] = {SUBMODULE_CONFLICT,
2835 getSubmoduleID(C.Other)};
2836 Stream.EmitRecordWithBlob(ConflictAbbrev, Record, C.Message);
2837 }
2838
2839 // Emit the configuration macros.
2840 for (const auto &CM : Mod->ConfigMacros) {
2841 RecordData::value_type Record[] = {SUBMODULE_CONFIG_MACRO};
2842 Stream.EmitRecordWithBlob(ConfigMacroAbbrev, Record, CM);
2843 }
2844
2845 // Emit the initializers, if any.
2846 RecordData Inits;
2847 for (Decl *D : Context->getModuleInitializers(Mod))
2848 Inits.push_back(GetDeclRef(D));
2849 if (!Inits.empty())
2850 Stream.EmitRecord(SUBMODULE_INITIALIZERS, Inits);
2851
2852 // Emit the name of the re-exported module, if any.
2853 if (!Mod->ExportAsModule.empty()) {
2854 RecordData::value_type Record[] = {SUBMODULE_EXPORT_AS};
2855 Stream.EmitRecordWithBlob(ExportAsAbbrev, Record, Mod->ExportAsModule);
2856 }
2857
2858 // Queue up the submodules of this module.
2859 for (auto *M : Mod->submodules())
2860 Q.push(M);
2861 }
2862
2863 Stream.ExitBlock();
2864
2865 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?\""
, "clang/lib/Serialization/ASTWriter.cpp", 2868, __extension__
__PRETTY_FUNCTION__))
2866 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?\""
, "clang/lib/Serialization/ASTWriter.cpp", 2868, __extension__
__PRETTY_FUNCTION__))
2867 "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?\""
, "clang/lib/Serialization/ASTWriter.cpp", 2868, __extension__
__PRETTY_FUNCTION__))
2868 "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?\""
, "clang/lib/Serialization/ASTWriter.cpp", 2868, __extension__
__PRETTY_FUNCTION__))
;
2869}
2870
2871void ASTWriter::WritePragmaDiagnosticMappings(const DiagnosticsEngine &Diag,
2872 bool isModule) {
2873 llvm::SmallDenseMap<const DiagnosticsEngine::DiagState *, unsigned, 64>
2874 DiagStateIDMap;
2875 unsigned CurrID = 0;
2876 RecordData Record;
2877
2878 auto EncodeDiagStateFlags =
2879 [](const DiagnosticsEngine::DiagState *DS) -> unsigned {
2880 unsigned Result = (unsigned)DS->ExtBehavior;
2881 for (unsigned Val :
2882 {(unsigned)DS->IgnoreAllWarnings, (unsigned)DS->EnableAllWarnings,
2883 (unsigned)DS->WarningsAsErrors, (unsigned)DS->ErrorsAsFatal,
2884 (unsigned)DS->SuppressSystemWarnings})
2885 Result = (Result << 1) | Val;
2886 return Result;
2887 };
2888
2889 unsigned Flags = EncodeDiagStateFlags(Diag.DiagStatesByLoc.FirstDiagState);
2890 Record.push_back(Flags);
2891
2892 auto AddDiagState = [&](const DiagnosticsEngine::DiagState *State,
2893 bool IncludeNonPragmaStates) {
2894 // Ensure that the diagnostic state wasn't modified since it was created.
2895 // We will not correctly round-trip this information otherwise.
2896 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 2897, __extension__
__PRETTY_FUNCTION__))
2897 "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\""
, "clang/lib/Serialization/ASTWriter.cpp", 2897, __extension__
__PRETTY_FUNCTION__))
;
2898
2899 unsigned &DiagStateID = DiagStateIDMap[State];
2900 Record.push_back(DiagStateID);
2901
2902 if (DiagStateID == 0) {
2903 DiagStateID = ++CurrID;
2904
2905 // Add a placeholder for the number of mappings.
2906 auto SizeIdx = Record.size();
2907 Record.emplace_back();
2908 for (const auto &I : *State) {
2909 if (I.second.isPragma() || IncludeNonPragmaStates) {
2910 Record.push_back(I.first);
2911 Record.push_back(I.second.serialize());
2912 }
2913 }
2914 // Update the placeholder.
2915 Record[SizeIdx] = (Record.size() - SizeIdx) / 2;
2916 }
2917 };
2918
2919 AddDiagState(Diag.DiagStatesByLoc.FirstDiagState, isModule);
2920
2921 // Reserve a spot for the number of locations with state transitions.
2922 auto NumLocationsIdx = Record.size();
2923 Record.emplace_back();
2924
2925 // Emit the state transitions.
2926 unsigned NumLocations = 0;
2927 for (auto &FileIDAndFile : Diag.DiagStatesByLoc.Files) {
2928 if (!FileIDAndFile.first.isValid() ||
2929 !FileIDAndFile.second.HasLocalTransitions)
2930 continue;
2931 ++NumLocations;
2932
2933 SourceLocation Loc = Diag.SourceMgr->getComposedLoc(FileIDAndFile.first, 0);
2934 assert(!Loc.isInvalid() && "start loc for valid FileID is invalid")(static_cast <bool> (!Loc.isInvalid() && "start loc for valid FileID is invalid"
) ? void (0) : __assert_fail ("!Loc.isInvalid() && \"start loc for valid FileID is invalid\""
, "clang/lib/Serialization/ASTWriter.cpp", 2934, __extension__
__PRETTY_FUNCTION__))
;
2935 AddSourceLocation(Loc, Record);
2936
2937 Record.push_back(FileIDAndFile.second.StateTransitions.size());
2938 for (auto &StatePoint : FileIDAndFile.second.StateTransitions) {
2939 Record.push_back(StatePoint.Offset);
2940 AddDiagState(StatePoint.State, false);
2941 }
2942 }
2943
2944 // Backpatch the number of locations.
2945 Record[NumLocationsIdx] = NumLocations;
2946
2947 // Emit CurDiagStateLoc. Do it last in order to match source order.
2948 //
2949 // This also protects against a hypothetical corner case with simulating
2950 // -Werror settings for implicit modules in the ASTReader, where reading
2951 // CurDiagState out of context could change whether warning pragmas are
2952 // treated as errors.
2953 AddSourceLocation(Diag.DiagStatesByLoc.CurDiagStateLoc, Record);
2954 AddDiagState(Diag.DiagStatesByLoc.CurDiagState, false);
2955
2956 Stream.EmitRecord(DIAG_PRAGMA_MAPPINGS, Record);
2957}
2958
2959//===----------------------------------------------------------------------===//
2960// Type Serialization
2961//===----------------------------------------------------------------------===//
2962
2963/// Write the representation of a type to the AST stream.
2964void ASTWriter::WriteType(QualType T) {
2965 TypeIdx &IdxRef = TypeIdxs[T];
2966 if (IdxRef.getIndex() == 0) // we haven't seen this type before.
2967 IdxRef = TypeIdx(NextTypeID++);
2968 TypeIdx Idx = IdxRef;
2969
2970 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 2970, __extension__
__PRETTY_FUNCTION__))
;
2971
2972 // Emit the type's representation.
2973 uint64_t Offset = ASTTypeWriter(*this).write(T) - DeclTypesBlockStartOffset;
2974
2975 // Record the offset for this type.
2976 unsigned Index = Idx.getIndex() - FirstTypeID;
2977 if (TypeOffsets.size() == Index)
2978 TypeOffsets.emplace_back(Offset);
2979 else if (TypeOffsets.size() < Index) {
2980 TypeOffsets.resize(Index + 1);
2981 TypeOffsets[Index].setBitOffset(Offset);
2982 } else {
2983 llvm_unreachable("Types emitted in wrong order")::llvm::llvm_unreachable_internal("Types emitted in wrong order"
, "clang/lib/Serialization/ASTWriter.cpp", 2983)
;
2984 }
2985}
2986
2987//===----------------------------------------------------------------------===//
2988// Declaration Serialization
2989//===----------------------------------------------------------------------===//
2990
2991/// Write the block containing all of the declaration IDs
2992/// lexically declared within the given DeclContext.
2993///
2994/// \returns the offset of the DECL_CONTEXT_LEXICAL block within the
2995/// bitstream, or 0 if no block was written.
2996uint64_t ASTWriter::WriteDeclContextLexicalBlock(ASTContext &Context,
2997 DeclContext *DC) {
2998 if (DC->decls_empty())
2999 return 0;
3000
3001 uint64_t Offset = Stream.GetCurrentBitNo();
3002 SmallVector<uint32_t, 128> KindDeclPairs;
3003 for (const auto *D : DC->decls()) {
3004 KindDeclPairs.push_back(D->getKind());
3005 KindDeclPairs.push_back(GetDeclRef(D));
3006 }
3007
3008 ++NumLexicalDeclContexts;
3009 RecordData::value_type Record[] = {DECL_CONTEXT_LEXICAL};
3010 Stream.EmitRecordWithBlob(DeclContextLexicalAbbrev, Record,
3011 bytes(KindDeclPairs));
3012 return Offset;
3013}
3014
3015void ASTWriter::WriteTypeDeclOffsets() {
3016 using namespace llvm;
3017
3018 // Write the type offsets array
3019 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3020 Abbrev->Add(BitCodeAbbrevOp(TYPE_OFFSET));
3021 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of types
3022 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base type index
3023 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // types block
3024 unsigned TypeOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3025 {
3026 RecordData::value_type Record[] = {TYPE_OFFSET, TypeOffsets.size(),
3027 FirstTypeID - NUM_PREDEF_TYPE_IDS};
3028 Stream.EmitRecordWithBlob(TypeOffsetAbbrev, Record, bytes(TypeOffsets));
3029 }
3030
3031 // Write the declaration offsets array
3032 Abbrev = std::make_shared<BitCodeAbbrev>();
3033 Abbrev->Add(BitCodeAbbrevOp(DECL_OFFSET));
3034 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of declarations
3035 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base decl ID
3036 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // declarations block
3037 unsigned DeclOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3038 {
3039 RecordData::value_type Record[] = {DECL_OFFSET, DeclOffsets.size(),
3040 FirstDeclID - NUM_PREDEF_DECL_IDS};
3041 Stream.EmitRecordWithBlob(DeclOffsetAbbrev, Record, bytes(DeclOffsets));
3042 }
3043}
3044
3045void ASTWriter::WriteFileDeclIDsMap() {
3046 using namespace llvm;
3047
3048 SmallVector<std::pair<FileID, DeclIDInFileInfo *>, 64> SortedFileDeclIDs;
3049 SortedFileDeclIDs.reserve(FileDeclIDs.size());
3050 for (const auto &P : FileDeclIDs)
3051 SortedFileDeclIDs.push_back(std::make_pair(P.first, P.second.get()));
3052 llvm::sort(SortedFileDeclIDs, llvm::less_first());
3053
3054 // Join the vectors of DeclIDs from all files.
3055 SmallVector<DeclID, 256> FileGroupedDeclIDs;
3056 for (auto &FileDeclEntry : SortedFileDeclIDs) {
3057 DeclIDInFileInfo &Info = *FileDeclEntry.second;
3058 Info.FirstDeclIndex = FileGroupedDeclIDs.size();
3059 for (auto &LocDeclEntry : Info.DeclIDs)
3060 FileGroupedDeclIDs.push_back(LocDeclEntry.second);
3061 }
3062
3063 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3064 Abbrev->Add(BitCodeAbbrevOp(FILE_SORTED_DECLS));
3065 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3066 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3067 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
3068 RecordData::value_type Record[] = {FILE_SORTED_DECLS,
3069 FileGroupedDeclIDs.size()};
3070 Stream.EmitRecordWithBlob(AbbrevCode, Record, bytes(FileGroupedDeclIDs));
3071}
3072
3073void ASTWriter::WriteComments() {
3074 Stream.EnterSubblock(COMMENTS_BLOCK_ID, 3);
3075 auto _ = llvm::make_scope_exit([this] { Stream.ExitBlock(); });
3076 if (!PP->getPreprocessorOpts().WriteCommentListToPCH)
3077 return;
3078 RecordData Record;
3079 for (const auto &FO : Context->Comments.OrderedComments) {
3080 for (const auto &OC : FO.second) {
3081 const RawComment *I = OC.second;
3082 Record.clear();
3083 AddSourceRange(I->getSourceRange(), Record);
3084 Record.push_back(I->getKind());
3085 Record.push_back(I->isTrailingComment());
3086 Record.push_back(I->isAlmostTrailingComment());
3087 Stream.EmitRecord(COMMENTS_RAW_COMMENT, Record);
3088 }
3089 }
3090}
3091
3092//===----------------------------------------------------------------------===//
3093// Global Method Pool and Selector Serialization
3094//===----------------------------------------------------------------------===//
3095
3096namespace {
3097
3098// Trait used for the on-disk hash table used in the method pool.
3099class ASTMethodPoolTrait {
3100 ASTWriter &Writer;
3101
3102public:
3103 using key_type = Selector;
3104 using key_type_ref = key_type;
3105
3106 struct data_type {
3107 SelectorID ID;
3108 ObjCMethodList Instance, Factory;
3109 };
3110 using data_type_ref = const data_type &;
3111
3112 using hash_value_type = unsigned;
3113 using offset_type = unsigned;
3114
3115 explicit ASTMethodPoolTrait(ASTWriter &Writer) : Writer(Writer) {}
3116
3117 static hash_value_type ComputeHash(Selector Sel) {
3118 return serialization::ComputeHash(Sel);
3119 }
3120
3121 std::pair<unsigned, unsigned>
3122 EmitKeyDataLength(raw_ostream& Out, Selector Sel,
3123 data_type_ref Methods) {
3124 unsigned KeyLen = 2 + (Sel.getNumArgs()? Sel.getNumArgs() * 4 : 4);
3125 unsigned DataLen = 4 + 2 + 2; // 2 bytes for each of the method counts
3126 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3127 Method = Method->getNext())
3128 if (ShouldWriteMethodListNode(Method))
3129 DataLen += 4;
3130 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3131 Method = Method->getNext())
3132 if (ShouldWriteMethodListNode(Method))
3133 DataLen += 4;
3134 return emitULEBKeyDataLength(KeyLen, DataLen, Out);
3135 }
3136
3137 void EmitKey(raw_ostream& Out, Selector Sel, unsigned) {
3138 using namespace llvm::support;
3139
3140 endian::Writer LE(Out, little);
3141 uint64_t Start = Out.tell();
3142 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 3142, __extension__
__PRETTY_FUNCTION__))
;
3143 Writer.SetSelectorOffset(Sel, Start);
3144 unsigned N = Sel.getNumArgs();
3145 LE.write<uint16_t>(N);
3146 if (N == 0)
3147 N = 1;
3148 for (unsigned I = 0; I != N; ++I)
3149 LE.write<uint32_t>(
3150 Writer.getIdentifierRef(Sel.getIdentifierInfoForSlot(I)));
3151 }
3152
3153 void EmitData(raw_ostream& Out, key_type_ref,
3154 data_type_ref Methods, unsigned DataLen) {
3155 using namespace llvm::support;
3156
3157 endian::Writer LE(Out, little);
3158 uint64_t Start = Out.tell(); (void)Start;
3159 LE.write<uint32_t>(Methods.ID);
3160 unsigned NumInstanceMethods = 0;
3161 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3162 Method = Method->getNext())
3163 if (ShouldWriteMethodListNode(Method))
3164 ++NumInstanceMethods;
3165
3166 unsigned NumFactoryMethods = 0;
3167 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3168 Method = Method->getNext())
3169 if (ShouldWriteMethodListNode(Method))
3170 ++NumFactoryMethods;
3171
3172 unsigned InstanceBits = Methods.Instance.getBits();
3173 assert(InstanceBits < 4)(static_cast <bool> (InstanceBits < 4) ? void (0) : __assert_fail
("InstanceBits < 4", "clang/lib/Serialization/ASTWriter.cpp"
, 3173, __extension__ __PRETTY_FUNCTION__))
;
3174 unsigned InstanceHasMoreThanOneDeclBit =
3175 Methods.Instance.hasMoreThanOneDecl();
3176 unsigned FullInstanceBits = (NumInstanceMethods << 3) |
3177 (InstanceHasMoreThanOneDeclBit << 2) |
3178 InstanceBits;
3179 unsigned FactoryBits = Methods.Factory.getBits();
3180 assert(FactoryBits < 4)(static_cast <bool> (FactoryBits < 4) ? void (0) : __assert_fail
("FactoryBits < 4", "clang/lib/Serialization/ASTWriter.cpp"
, 3180, __extension__ __PRETTY_FUNCTION__))
;
3181 unsigned FactoryHasMoreThanOneDeclBit =
3182 Methods.Factory.hasMoreThanOneDecl();
3183 unsigned FullFactoryBits = (NumFactoryMethods << 3) |
3184 (FactoryHasMoreThanOneDeclBit << 2) |
3185 FactoryBits;
3186 LE.write<uint16_t>(FullInstanceBits);
3187 LE.write<uint16_t>(FullFactoryBits);
3188 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3189 Method = Method->getNext())
3190 if (ShouldWriteMethodListNode(Method))
3191 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3192 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3193 Method = Method->getNext())
3194 if (ShouldWriteMethodListNode(Method))
3195 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3196
3197 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 3197, __extension__
__PRETTY_FUNCTION__))
;
3198 }
3199
3200private:
3201 static bool ShouldWriteMethodListNode(const ObjCMethodList *Node) {
3202 return (Node->getMethod() && !Node->getMethod()->isFromASTFile());
3203 }
3204};
3205
3206} // namespace
3207
3208/// Write ObjC data: selectors and the method pool.
3209///
3210/// The method pool contains both instance and factory methods, stored
3211/// in an on-disk hash table indexed by the selector. The hash table also
3212/// contains an empty entry for every other selector known to Sema.
3213void ASTWriter::WriteSelectors(Sema &SemaRef) {
3214 using namespace llvm;
3215
3216 // Do we have to do anything at all?
3217 if (SemaRef.MethodPool.empty() && SelectorIDs.empty())
3218 return;
3219 unsigned NumTableEntries = 0;
3220 // Create and write out the blob that contains selectors and the method pool.
3221 {
3222 llvm::OnDiskChainedHashTableGenerator<ASTMethodPoolTrait> Generator;
3223 ASTMethodPoolTrait Trait(*this);
3224
3225 // Create the on-disk hash table representation. We walk through every
3226 // selector we've seen and look it up in the method pool.
3227 SelectorOffsets.resize(NextSelectorID - FirstSelectorID);
3228 for (auto &SelectorAndID : SelectorIDs) {
3229 Selector S = SelectorAndID.first;
3230 SelectorID ID = SelectorAndID.second;
3231 Sema::GlobalMethodPool::iterator F = SemaRef.MethodPool.find(S);
3232 ASTMethodPoolTrait::data_type Data = {
3233 ID,
3234 ObjCMethodList(),
3235 ObjCMethodList()
3236 };
3237 if (F != SemaRef.MethodPool.end()) {
3238 Data.Instance = F->second.first;
3239 Data.Factory = F->second.second;
3240 }
3241 // Only write this selector if it's not in an existing AST or something
3242 // changed.
3243 if (Chain && ID < FirstSelectorID) {
3244 // Selector already exists. Did it change?
3245 bool changed = false;
3246 for (ObjCMethodList *M = &Data.Instance; M && M->getMethod();
3247 M = M->getNext()) {
3248 if (!M->getMethod()->isFromASTFile()) {
3249 changed = true;
3250 Data.Instance = *M;
3251 break;
3252 }
3253 }
3254 for (ObjCMethodList *M = &Data.Factory; M && M->getMethod();
3255 M = M->getNext()) {
3256 if (!M->getMethod()->isFromASTFile()) {
3257 changed = true;
3258 Data.Factory = *M;
3259 break;
3260 }
3261 }
3262 if (!changed)
3263 continue;
3264 } else if (Data.Instance.getMethod() || Data.Factory.getMethod()) {
3265 // A new method pool entry.
3266 ++NumTableEntries;
3267 }
3268 Generator.insert(S, Data, Trait);
3269 }
3270
3271 // Create the on-disk hash table in a buffer.
3272 SmallString<4096> MethodPool;
3273 uint32_t BucketOffset;
3274 {
3275 using namespace llvm::support;
3276
3277 ASTMethodPoolTrait Trait(*this);
3278 llvm::raw_svector_ostream Out(MethodPool);
3279 // Make sure that no bucket is at offset 0
3280 endian::write<uint32_t>(Out, 0, little);
3281 BucketOffset = Generator.Emit(Out, Trait);
3282 }
3283
3284 // Create a blob abbreviation
3285 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3286 Abbrev->Add(BitCodeAbbrevOp(METHOD_POOL));
3287 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3288 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3289 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3290 unsigned MethodPoolAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3291
3292 // Write the method pool
3293 {
3294 RecordData::value_type Record[] = {METHOD_POOL, BucketOffset,
3295 NumTableEntries};
3296 Stream.EmitRecordWithBlob(MethodPoolAbbrev, Record, MethodPool);
3297 }
3298
3299 // Create a blob abbreviation for the selector table offsets.
3300 Abbrev = std::make_shared<BitCodeAbbrev>();
3301 Abbrev->Add(BitCodeAbbrevOp(SELECTOR_OFFSETS));
3302 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size
3303 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3304 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3305 unsigned SelectorOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3306
3307 // Write the selector offsets table.
3308 {
3309 RecordData::value_type Record[] = {
3310 SELECTOR_OFFSETS, SelectorOffsets.size(),
3311 FirstSelectorID - NUM_PREDEF_SELECTOR_IDS};
3312 Stream.EmitRecordWithBlob(SelectorOffsetAbbrev, Record,
3313 bytes(SelectorOffsets));
3314 }
3315 }
3316}
3317
3318/// Write the selectors referenced in @selector expression into AST file.
3319void ASTWriter::WriteReferencedSelectorsPool(Sema &SemaRef) {
3320 using namespace llvm;
3321
3322 if (SemaRef.ReferencedSelectors.empty())
3323 return;
3324
3325 RecordData Record;
3326 ASTRecordWriter Writer(*this, Record);
3327
3328 // Note: this writes out all references even for a dependent AST. But it is
3329 // very tricky to fix, and given that @selector shouldn't really appear in
3330 // headers, probably not worth it. It's not a correctness issue.
3331 for (auto &SelectorAndLocation : SemaRef.ReferencedSelectors) {
3332 Selector Sel = SelectorAndLocation.first;
3333 SourceLocation Loc = SelectorAndLocation.second;
3334 Writer.AddSelectorRef(Sel);
3335 Writer.AddSourceLocation(Loc);
3336 }
3337 Writer.Emit(REFERENCED_SELECTOR_POOL);
3338}
3339
3340//===----------------------------------------------------------------------===//
3341// Identifier Table Serialization
3342//===----------------------------------------------------------------------===//
3343
3344/// Determine the declaration that should be put into the name lookup table to
3345/// represent the given declaration in this module. This is usually D itself,
3346/// but if D was imported and merged into a local declaration, we want the most
3347/// recent local declaration instead. The chosen declaration will be the most
3348/// recent declaration in any module that imports this one.
3349static NamedDecl *getDeclForLocalLookup(const LangOptions &LangOpts,
3350 NamedDecl *D) {
3351 if (!LangOpts.Modules || !D->isFromASTFile())
3352 return D;
3353
3354 if (Decl *Redecl = D->getPreviousDecl()) {
3355 // For Redeclarable decls, a prior declaration might be local.
3356 for (; Redecl; Redecl = Redecl->getPreviousDecl()) {
3357 // If we find a local decl, we're done.
3358 if (!Redecl->isFromASTFile()) {
3359 // Exception: in very rare cases (for injected-class-names), not all
3360 // redeclarations are in the same semantic context. Skip ones in a
3361 // different context. They don't go in this lookup table at all.
3362 if (!Redecl->getDeclContext()->getRedeclContext()->Equals(
3363 D->getDeclContext()->getRedeclContext()))
3364 continue;
3365 return cast<NamedDecl>(Redecl);
3366 }
3367
3368 // If we find a decl from a (chained-)PCH stop since we won't find a
3369 // local one.
3370 if (Redecl->getOwningModuleID() == 0)
3371 break;
3372 }
3373 } else if (Decl *First = D->getCanonicalDecl()) {
3374 // For Mergeable decls, the first decl might be local.
3375 if (!First->isFromASTFile())
3376 return cast<NamedDecl>(First);
3377 }
3378
3379 // All declarations are imported. Our most recent declaration will also be
3380 // the most recent one in anyone who imports us.
3381 return D;
3382}
3383
3384namespace {
3385
3386class ASTIdentifierTableTrait {
3387 ASTWriter &Writer;
3388 Preprocessor &PP;
3389 IdentifierResolver &IdResolver;
3390 bool IsModule;
3391 bool NeedDecls;
3392 ASTWriter::RecordData *InterestingIdentifierOffsets;
3393
3394 /// Determines whether this is an "interesting" identifier that needs a
3395 /// full IdentifierInfo structure written into the hash table. Notably, this
3396 /// doesn't check whether the name has macros defined; use PublicMacroIterator
3397 /// to check that.
3398 bool isInterestingIdentifier(const IdentifierInfo *II, uint64_t MacroOffset) {
3399 if (MacroOffset || II->isPoisoned() ||
3400 (!IsModule && II->getObjCOrBuiltinID()) ||
3401 II->hasRevertedTokenIDToIdentifier() ||
3402 (NeedDecls && II->getFETokenInfo()))
3403 return true;
3404
3405 return false;
3406 }
3407
3408public:
3409 using key_type = IdentifierInfo *;
3410 using key_type_ref = key_type;
3411
3412 using data_type = IdentID;
3413 using data_type_ref = data_type;
3414
3415 using hash_value_type = unsigned;
3416 using offset_type = unsigned;
3417
3418 ASTIdentifierTableTrait(ASTWriter &Writer, Preprocessor &PP,
3419 IdentifierResolver &IdResolver, bool IsModule,
3420 ASTWriter::RecordData *InterestingIdentifierOffsets)
3421 : Writer(Writer), PP(PP), IdResolver(IdResolver), IsModule(IsModule),
3422 NeedDecls(!IsModule || !Writer.getLangOpts().CPlusPlus),
3423 InterestingIdentifierOffsets(InterestingIdentifierOffsets) {}
3424
3425 bool needDecls() const { return NeedDecls; }
3426
3427 static hash_value_type ComputeHash(const IdentifierInfo* II) {
3428 return llvm::djbHash(II->getName());
3429 }
3430
3431 bool isInterestingIdentifier(const IdentifierInfo *II) {
3432 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3433 return isInterestingIdentifier(II, MacroOffset);
3434 }
3435
3436 bool isInterestingNonMacroIdentifier(const IdentifierInfo *II) {
3437 return isInterestingIdentifier(II, 0);
3438 }
3439
3440 std::pair<unsigned, unsigned>
3441 EmitKeyDataLength(raw_ostream& Out, IdentifierInfo* II, IdentID ID) {
3442 // Record the location of the identifier data. This is used when generating
3443 // the mapping from persistent IDs to strings.
3444 Writer.SetIdentifierOffset(II, Out.tell());
3445
3446 // Emit the offset of the key/data length information to the interesting
3447 // identifiers table if necessary.
3448 if (InterestingIdentifierOffsets && isInterestingIdentifier(II))
3449 InterestingIdentifierOffsets->push_back(Out.tell());
3450
3451 unsigned KeyLen = II->getLength() + 1;
3452 unsigned DataLen = 4; // 4 bytes for the persistent ID << 1
3453 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3454 if (isInterestingIdentifier(II, MacroOffset)) {
3455 DataLen += 2; // 2 bytes for builtin ID
3456 DataLen += 2; // 2 bytes for flags
3457 if (MacroOffset)
3458 DataLen += 4; // MacroDirectives offset.
3459
3460 if (NeedDecls) {
3461 for (IdentifierResolver::iterator D = IdResolver.begin(II),
3462 DEnd = IdResolver.end();
3463 D != DEnd; ++D)
3464 DataLen += 4;
3465 }
3466 }
3467 return emitULEBKeyDataLength(KeyLen, DataLen, Out);
3468 }
3469
3470 void EmitKey(raw_ostream& Out, const IdentifierInfo* II,
3471 unsigned KeyLen) {
3472 Out.write(II->getNameStart(), KeyLen);
3473 }
3474
3475 void EmitData(raw_ostream& Out, IdentifierInfo* II,
3476 IdentID ID, unsigned) {
3477 using namespace llvm::support;
3478
3479 endian::Writer LE(Out, little);
3480
3481 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3482 if (!isInterestingIdentifier(II, MacroOffset)) {
3483 LE.write<uint32_t>(ID << 1);
3484 return;
3485 }
3486
3487 LE.write<uint32_t>((ID << 1) | 0x01);
3488 uint32_t Bits = (uint32_t)II->getObjCOrBuiltinID();
3489 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.\""
, "clang/lib/Serialization/ASTWriter.cpp", 3489, __extension__
__PRETTY_FUNCTION__))
;
3490 LE.write<uint16_t>(Bits);
3491 Bits = 0;
3492 bool HadMacroDefinition = MacroOffset != 0;
3493 Bits = (Bits << 1) | unsigned(HadMacroDefinition);
3494 Bits = (Bits << 1) | unsigned(II->isExtensionToken());
3495 Bits = (Bits << 1) | unsigned(II->isPoisoned());
3496 Bits = (Bits << 1) | unsigned(II->hasRevertedTokenIDToIdentifier());
3497 Bits = (Bits << 1) | unsigned(II->isCPlusPlusOperatorKeyword());
3498 LE.write<uint16_t>(Bits);
3499
3500 if (HadMacroDefinition)
3501 LE.write<uint32_t>(MacroOffset);
3502
3503 if (NeedDecls) {
3504 // Emit the declaration IDs in reverse order, because the
3505 // IdentifierResolver provides the declarations as they would be
3506 // visible (e.g., the function "stat" would come before the struct
3507 // "stat"), but the ASTReader adds declarations to the end of the list
3508 // (so we need to see the struct "stat" before the function "stat").
3509 // Only emit declarations that aren't from a chained PCH, though.
3510 SmallVector<NamedDecl *, 16> Decls(IdResolver.begin(II),
3511 IdResolver.end());
3512 for (NamedDecl *D : llvm::reverse(Decls))
3513 LE.write<uint32_t>(
3514 Writer.getDeclID(getDeclForLocalLookup(PP.getLangOpts(), D)));
3515 }
3516 }
3517};
3518
3519} // namespace
3520
3521/// Write the identifier table into the AST file.
3522///
3523/// The identifier table consists of a blob containing string data
3524/// (the actual identifiers themselves) and a separate "offsets" index
3525/// that maps identifier IDs to locations within the blob.
3526void ASTWriter::WriteIdentifierTable(Preprocessor &PP,
3527 IdentifierResolver &IdResolver,
3528 bool IsModule) {
3529 using namespace llvm;
3530
3531 RecordData InterestingIdents;
3532
3533 // Create and write out the blob that contains the identifier
3534 // strings.
3535 {
3536 llvm::OnDiskChainedHashTableGenerator<ASTIdentifierTableTrait> Generator;
3537 ASTIdentifierTableTrait Trait(
3538 *this, PP, IdResolver, IsModule,
3539 (getLangOpts().CPlusPlus && IsModule) ? &InterestingIdents : nullptr);
3540
3541 // Look for any identifiers that were named while processing the
3542 // headers, but are otherwise not needed. We add these to the hash
3543 // table to enable checking of the predefines buffer in the case
3544 // where the user adds new macro definitions when building the AST
3545 // file.
3546 SmallVector<const IdentifierInfo *, 128> IIs;
3547 for (const auto &ID : PP.getIdentifierTable())
3548 IIs.push_back(ID.second);
3549 // Sort the identifiers lexicographically before getting them references so
3550 // that their order is stable.
3551 llvm::sort(IIs, llvm::deref<std::less<>>());
3552 for (const IdentifierInfo *II : IIs)
3553 if (Trait.isInterestingNonMacroIdentifier(II))
3554 getIdentifierRef(II);
3555
3556 // Create the on-disk hash table representation. We only store offsets
3557 // for identifiers that appear here for the first time.
3558 IdentifierOffsets.resize(NextIdentID - FirstIdentID);
3559 for (auto IdentIDPair : IdentifierIDs) {
3560 auto *II = const_cast<IdentifierInfo *>(IdentIDPair.first);
3561 IdentID ID = IdentIDPair.second;
3562 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 3562, __extension__
__PRETTY_FUNCTION__))
;
3563 // Write out identifiers if either the ID is local or the identifier has
3564 // changed since it was loaded.
3565 if (ID >= FirstIdentID || !Chain || !II->isFromAST()
3566 || II->hasChangedSinceDeserialization() ||
3567 (Trait.needDecls() &&
3568 II->hasFETokenInfoChangedSinceDeserialization()))
3569 Generator.insert(II, ID, Trait);
3570 }
3571
3572 // Create the on-disk hash table in a buffer.
3573 SmallString<4096> IdentifierTable;
3574 uint32_t BucketOffset;
3575 {
3576 using namespace llvm::support;
3577
3578 llvm::raw_svector_ostream Out(IdentifierTable);
3579 // Make sure that no bucket is at offset 0
3580 endian::write<uint32_t>(Out, 0, little);
3581 BucketOffset = Generator.Emit(Out, Trait);
3582 }
3583
3584 // Create a blob abbreviation
3585 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3586 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_TABLE));
3587 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3588 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3589 unsigned IDTableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3590
3591 // Write the identifier table
3592 RecordData::value_type Record[] = {IDENTIFIER_TABLE, BucketOffset};
3593 Stream.EmitRecordWithBlob(IDTableAbbrev, Record, IdentifierTable);
3594 }
3595
3596 // Write the offsets table for identifier IDs.
3597 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3598 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_OFFSET));
3599 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of identifiers
3600 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3601 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3602 unsigned IdentifierOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3603
3604#ifndef NDEBUG
3605 for (unsigned I = 0, N = IdentifierOffsets.size(); I != N; ++I)
3606 assert(IdentifierOffsets[I] && "Missing identifier offset?")(static_cast <bool> (IdentifierOffsets[I] && "Missing identifier offset?"
) ? void (0) : __assert_fail ("IdentifierOffsets[I] && \"Missing identifier offset?\""
, "clang/lib/Serialization/ASTWriter.cpp", 3606, __extension__
__PRETTY_FUNCTION__))
;
3607#endif
3608
3609 RecordData::value_type Record[] = {IDENTIFIER_OFFSET,
3610 IdentifierOffsets.size(),
3611 FirstIdentID - NUM_PREDEF_IDENT_IDS};
3612 Stream.EmitRecordWithBlob(IdentifierOffsetAbbrev, Record,
3613 bytes(IdentifierOffsets));
3614
3615 // In C++, write the list of interesting identifiers (those that are
3616 // defined as macros, poisoned, or similar unusual things).
3617 if (!InterestingIdents.empty())
3618 Stream.EmitRecord(INTERESTING_IDENTIFIERS, InterestingIdents);
3619}
3620
3621//===----------------------------------------------------------------------===//
3622// DeclContext's Name Lookup Table Serialization
3623//===----------------------------------------------------------------------===//
3624
3625namespace {
3626
3627// Trait used for the on-disk hash table used in the method pool.
3628class ASTDeclContextNameLookupTrait {
3629 ASTWriter &Writer;
3630 llvm::SmallVector<DeclID, 64> DeclIDs;
3631
3632public:
3633 using key_type = DeclarationNameKey;
3634 using key_type_ref = key_type;
3635
3636 /// A start and end index into DeclIDs, representing a sequence of decls.
3637 using data_type = std::pair<unsigned, unsigned>;
3638 using data_type_ref = const data_type &;
3639
3640 using hash_value_type = unsigned;
3641 using offset_type = unsigned;
3642
3643 explicit ASTDeclContextNameLookupTrait(ASTWriter &Writer) : Writer(Writer) {}
3644
3645 template<typename Coll>
3646 data_type getData(const Coll &Decls) {
3647 unsigned Start = DeclIDs.size();
3648 for (NamedDecl *D : Decls) {
3649 DeclIDs.push_back(
3650 Writer.GetDeclRef(getDeclForLocalLookup(Writer.getLangOpts(), D)));
3651 }
3652 return std::make_pair(Start, DeclIDs.size());
3653 }
3654
3655 data_type ImportData(const reader::ASTDeclContextNameLookupTrait::data_type &FromReader) {
3656 unsigned Start = DeclIDs.size();
3657 for (auto ID : FromReader)
3658 DeclIDs.push_back(ID);
3659 return std::make_pair(Start, DeclIDs.size());
3660 }
3661
3662 static bool EqualKey(key_type_ref a, key_type_ref b) {
3663 return a == b;
3664 }
3665
3666 hash_value_type ComputeHash(DeclarationNameKey Name) {
3667 return Name.getHash();
3668 }
3669
3670 void EmitFileRef(raw_ostream &Out, ModuleFile *F) const {
3671 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?\""
, "clang/lib/Serialization/ASTWriter.cpp", 3672, __extension__
__PRETTY_FUNCTION__))
3672 "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?\""
, "clang/lib/Serialization/ASTWriter.cpp", 3672, __extension__
__PRETTY_FUNCTION__))
;
3673
3674 using namespace llvm::support;
3675
3676 endian::write<uint32_t>(Out, Writer.getChain()->getModuleFileID(F), little);
3677 }
3678
3679 std::pair<unsigned, unsigned> EmitKeyDataLength(raw_ostream &Out,
3680 DeclarationNameKey Name,
3681 data_type_ref Lookup) {
3682 unsigned KeyLen = 1;
3683 switch (Name.getKind()) {
3684 case DeclarationName::Identifier:
3685 case DeclarationName::ObjCZeroArgSelector:
3686 case DeclarationName::ObjCOneArgSelector:
3687 case DeclarationName::ObjCMultiArgSelector:
3688 case DeclarationName::CXXLiteralOperatorName:
3689 case DeclarationName::CXXDeductionGuideName:
3690 KeyLen += 4;
3691 break;
3692 case DeclarationName::CXXOperatorName:
3693 KeyLen += 1;
3694 break;
3695 case DeclarationName::CXXConstructorName:
3696 case DeclarationName::CXXDestructorName:
3697 case DeclarationName::CXXConversionFunctionName:
3698 case DeclarationName::CXXUsingDirective:
3699 break;
3700 }
3701
3702 // 4 bytes for each DeclID.
3703 unsigned DataLen = 4 * (Lookup.second - Lookup.first);
3704
3705 return emitULEBKeyDataLength(KeyLen, DataLen, Out);
3706 }
3707
3708 void EmitKey(raw_ostream &Out, DeclarationNameKey Name, unsigned) {
3709 using namespace llvm::support;
3710
3711 endian::Writer LE(Out, little);
3712 LE.write<uint8_t>(Name.getKind());
3713 switch (Name.getKind()) {
3714 case DeclarationName::Identifier:
3715 case DeclarationName::CXXLiteralOperatorName:
3716 case DeclarationName::CXXDeductionGuideName:
3717 LE.write<uint32_t>(Writer.getIdentifierRef(Name.getIdentifier()));
3718 return;
3719 case DeclarationName::ObjCZeroArgSelector:
3720 case DeclarationName::ObjCOneArgSelector:
3721 case DeclarationName::ObjCMultiArgSelector:
3722 LE.write<uint32_t>(Writer.getSelectorRef(Name.getSelector()));
3723 return;
3724 case DeclarationName::CXXOperatorName:
3725 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?\""
, "clang/lib/Serialization/ASTWriter.cpp", 3726, __extension__
__PRETTY_FUNCTION__))
3726 "Invalid operator?")(static_cast <bool> (Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS
&& "Invalid operator?") ? void (0) : __assert_fail (
"Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS && \"Invalid operator?\""
, "clang/lib/Serialization/ASTWriter.cpp", 3726, __extension__
__PRETTY_FUNCTION__))
;
3727 LE.write<uint8_t>(Name.getOperatorKind());
3728 return;
3729 case DeclarationName::CXXConstructorName:
3730 case DeclarationName::CXXDestructorName:
3731 case DeclarationName::CXXConversionFunctionName:
3732 case DeclarationName::CXXUsingDirective:
3733 return;
3734 }
3735
3736 llvm_unreachable("Invalid name kind?")::llvm::llvm_unreachable_internal("Invalid name kind?", "clang/lib/Serialization/ASTWriter.cpp"
, 3736)
;
3737 }
3738
3739 void EmitData(raw_ostream &Out, key_type_ref, data_type Lookup,
3740 unsigned DataLen) {
3741 using namespace llvm::support;
3742
3743 endian::Writer LE(Out, little);
3744 uint64_t Start = Out.tell(); (void)Start;
3745 for (unsigned I = Lookup.first, N = Lookup.second; I != N; ++I)
3746 LE.write<uint32_t>(DeclIDs[I]);
3747 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 3747, __extension__
__PRETTY_FUNCTION__))
;
3748 }
3749};
3750
3751} // namespace
3752
3753bool ASTWriter::isLookupResultExternal(StoredDeclsList &Result,
3754 DeclContext *DC) {
3755 return Result.hasExternalDecls() &&
3756 DC->hasNeedToReconcileExternalVisibleStorage();
3757}
3758
3759bool ASTWriter::isLookupResultEntirelyExternal(StoredDeclsList &Result,
3760 DeclContext *DC) {
3761 for (auto *D : Result.getLookupResult())
3762 if (!getDeclForLocalLookup(getLangOpts(), D)->isFromASTFile())
3763 return false;
3764
3765 return true;
3766}
3767
3768void
3769ASTWriter::GenerateNameLookupTable(const DeclContext *ConstDC,
3770 llvm::SmallVectorImpl<char> &LookupTable) {
3771 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 3773, __extension__
__PRETTY_FUNCTION__))
3772 !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\""
, "clang/lib/Serialization/ASTWriter.cpp", 3773, __extension__
__PRETTY_FUNCTION__))
3773 "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\""
, "clang/lib/Serialization/ASTWriter.cpp", 3773, __extension__
__PRETTY_FUNCTION__))
;
3774
3775 // FIXME: We need to build the lookups table, which is logically const.
3776 auto *DC = const_cast<DeclContext*>(ConstDC);
3777 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 3777, __extension__
__PRETTY_FUNCTION__))
;
3778
3779 // Create the on-disk hash table representation.
3780 MultiOnDiskHashTableGenerator<reader::ASTDeclContextNameLookupTrait,
3781 ASTDeclContextNameLookupTrait> Generator;
3782 ASTDeclContextNameLookupTrait Trait(*this);
3783
3784 // The first step is to collect the declaration names which we need to
3785 // serialize into the name lookup table, and to collect them in a stable
3786 // order.
3787 SmallVector<DeclarationName, 16> Names;
3788
3789 // We also build up small sets of the constructor and conversion function
3790 // names which are visible.
3791 llvm::SmallPtrSet<DeclarationName, 8> ConstructorNameSet, ConversionNameSet;
3792
3793 for (auto &Lookup : *DC->buildLookup()) {
3794 auto &Name = Lookup.first;
3795 auto &Result = Lookup.second;
3796
3797 // If there are no local declarations in our lookup result, we
3798 // don't need to write an entry for the name at all. If we can't
3799 // write out a lookup set without performing more deserialization,
3800 // just skip this entry.
3801 if (isLookupResultExternal(Result, DC) &&
3802 isLookupResultEntirelyExternal(Result, DC))
3803 continue;
3804
3805 // We also skip empty results. If any of the results could be external and
3806 // the currently available results are empty, then all of the results are
3807 // external and we skip it above. So the only way we get here with an empty
3808 // results is when no results could have been external *and* we have
3809 // external results.
3810 //
3811 // FIXME: While we might want to start emitting on-disk entries for negative
3812 // lookups into a decl context as an optimization, today we *have* to skip
3813 // them because there are names with empty lookup results in decl contexts
3814 // which we can't emit in any stable ordering: we lookup constructors and
3815 // conversion functions in the enclosing namespace scope creating empty
3816 // results for them. This in almost certainly a bug in Clang's name lookup,
3817 // but that is likely to be hard or impossible to fix and so we tolerate it
3818 // here by omitting lookups with empty results.
3819 if (Lookup.second.getLookupResult().empty())
3820 continue;
3821
3822 switch (Lookup.first.getNameKind()) {
3823 default:
3824 Names.push_back(Lookup.first);
3825 break;
3826
3827 case DeclarationName::CXXConstructorName:
3828 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!\""
, "clang/lib/Serialization/ASTWriter.cpp", 3829, __extension__
__PRETTY_FUNCTION__))
3829 "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!\""
, "clang/lib/Serialization/ASTWriter.cpp", 3829, __extension__
__PRETTY_FUNCTION__))
;
3830 ConstructorNameSet.insert(Name);
3831 break;
3832
3833 case DeclarationName::CXXConversionFunctionName:
3834 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!\""
, "clang/lib/Serialization/ASTWriter.cpp", 3835, __extension__
__PRETTY_FUNCTION__))
3835 "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!\""
, "clang/lib/Serialization/ASTWriter.cpp", 3835, __extension__
__PRETTY_FUNCTION__))
;
3836 ConversionNameSet.insert(Name);
3837 break;
3838 }
3839 }
3840
3841 // Sort the names into a stable order.
3842 llvm::sort(Names);
3843
3844 if (auto *D = dyn_cast<CXXRecordDecl>(DC)) {
3845 // We need to establish an ordering of constructor and conversion function
3846 // names, and they don't have an intrinsic ordering.
3847
3848 // First we try the easy case by forming the current context's constructor
3849 // name and adding that name first. This is a very useful optimization to
3850 // avoid walking the lexical declarations in many cases, and it also
3851 // handles the only case where a constructor name can come from some other
3852 // lexical context -- when that name is an implicit constructor merged from
3853 // another declaration in the redecl chain. Any non-implicit constructor or
3854 // conversion function which doesn't occur in all the lexical contexts
3855 // would be an ODR violation.
3856 auto ImplicitCtorName = Context->DeclarationNames.getCXXConstructorName(
3857 Context->getCanonicalType(Context->getRecordType(D)));
3858 if (ConstructorNameSet.erase(ImplicitCtorName))
3859 Names.push_back(ImplicitCtorName);
3860
3861 // If we still have constructors or conversion functions, we walk all the
3862 // names in the decl and add the constructors and conversion functions
3863 // which are visible in the order they lexically occur within the context.
3864 if (!ConstructorNameSet.empty() || !ConversionNameSet.empty())
3865 for (Decl *ChildD : cast<CXXRecordDecl>(DC)->decls())
3866 if (auto *ChildND = dyn_cast<NamedDecl>(ChildD)) {
3867 auto Name = ChildND->getDeclName();
3868 switch (Name.getNameKind()) {
3869 default:
3870 continue;
3871
3872 case DeclarationName::CXXConstructorName:
3873 if (ConstructorNameSet.erase(Name))
3874 Names.push_back(Name);
3875 break;
3876
3877 case DeclarationName::CXXConversionFunctionName:
3878 if (ConversionNameSet.erase(Name))
3879 Names.push_back(Name);
3880 break;
3881 }
3882
3883 if (ConstructorNameSet.empty() && ConversionNameSet.empty())
3884 break;
3885 }
3886
3887 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.\""
, "clang/lib/Serialization/ASTWriter.cpp", 3889, __extension__
__PRETTY_FUNCTION__))
3888 "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.\""
, "clang/lib/Serialization/ASTWriter.cpp", 3889, __extension__
__PRETTY_FUNCTION__))
3889 "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.\""
, "clang/lib/Serialization/ASTWriter.cpp", 3889, __extension__
__PRETTY_FUNCTION__))
;
3890 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.\""
, "clang/lib/Serialization/ASTWriter.cpp", 3892, __extension__
__PRETTY_FUNCTION__))
3891 "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.\""
, "clang/lib/Serialization/ASTWriter.cpp", 3892, __extension__
__PRETTY_FUNCTION__))
3892 "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.\""
, "clang/lib/Serialization/ASTWriter.cpp", 3892, __extension__
__PRETTY_FUNCTION__))
;
3893 }
3894
3895 // Next we need to do a lookup with each name into this decl context to fully
3896 // populate any results from external sources. We don't actually use the
3897 // results of these lookups because we only want to use the results after all
3898 // results have been loaded and the pointers into them will be stable.
3899 for (auto &Name : Names)
3900 DC->lookup(Name);
3901
3902 // Now we need to insert the results for each name into the hash table. For
3903 // constructor names and conversion function names, we actually need to merge
3904 // all of the results for them into one list of results each and insert
3905 // those.
3906 SmallVector<NamedDecl *, 8> ConstructorDecls;
3907 SmallVector<NamedDecl *, 8> ConversionDecls;
3908
3909 // Now loop over the names, either inserting them or appending for the two
3910 // special cases.
3911 for (auto &Name : Names) {
3912 DeclContext::lookup_result Result = DC->noload_lookup(Name);
3913
3914 switch (Name.getNameKind()) {
3915 default:
3916 Generator.insert(Name, Trait.getData(Result), Trait);
3917 break;
3918
3919 case DeclarationName::CXXConstructorName:
3920 ConstructorDecls.append(Result.begin(), Result.end());
3921 break;
3922
3923 case DeclarationName::CXXConversionFunctionName:
3924 ConversionDecls.append(Result.begin(), Result.end());
3925 break;
3926 }
3927 }
3928
3929 // Handle our two special cases if we ended up having any. We arbitrarily use
3930 // the first declaration's name here because the name itself isn't part of
3931 // the key, only the kind of name is used.
3932 if (!ConstructorDecls.empty())
3933 Generator.insert(ConstructorDecls.front()->getDeclName(),
3934 Trait.getData(ConstructorDecls), Trait);
3935 if (!ConversionDecls.empty())
3936 Generator.insert(ConversionDecls.front()->getDeclName(),
3937 Trait.getData(ConversionDecls), Trait);
3938
3939 // Create the on-disk hash table. Also emit the existing imported and
3940 // merged table if there is one.
3941 auto *Lookups = Chain ? Chain->getLoadedLookupTables(DC) : nullptr;
3942 Generator.emit(LookupTable, Trait, Lookups ? &Lookups->Table : nullptr);
3943}
3944
3945/// Write the block containing all of the declaration IDs
3946/// visible from the given DeclContext.
3947///
3948/// \returns the offset of the DECL_CONTEXT_VISIBLE block within the
3949/// bitstream, or 0 if no block was written.
3950uint64_t ASTWriter::WriteDeclContextVisibleBlock(ASTContext &Context,
3951 DeclContext *DC) {
3952 // If we imported a key declaration of this namespace, write the visible
3953 // lookup results as an update record for it rather than including them
3954 // on this declaration. We will only look at key declarations on reload.
3955 if (isa<NamespaceDecl>(DC) && Chain &&
3956 Chain->getKeyDeclaration(cast<Decl>(DC))->isFromASTFile()) {
3957 // Only do this once, for the first local declaration of the namespace.
3958 for (auto *Prev = cast<NamespaceDecl>(DC)->getPreviousDecl(); Prev;
3959 Prev = Prev->getPreviousDecl())
3960 if (!Prev->isFromASTFile())
3961 return 0;
3962
3963 // Note that we need to emit an update record for the primary context.
3964 UpdatedDeclContexts.insert(DC->getPrimaryContext());
3965
3966 // Make sure all visible decls are written. They will be recorded later. We
3967 // do this using a side data structure so we can sort the names into
3968 // a deterministic order.
3969 StoredDeclsMap *Map = DC->getPrimaryContext()->buildLookup();
3970 SmallVector<std::pair<DeclarationName, DeclContext::lookup_result>, 16>
3971 LookupResults;
3972 if (Map) {
3973 LookupResults.reserve(Map->size());
3974 for (auto &Entry : *Map)
3975 LookupResults.push_back(
3976 std::make_pair(Entry.first, Entry.second.getLookupResult()));
3977 }
3978
3979 llvm::sort(LookupResults, llvm::less_first());
3980 for (auto &NameAndResult : LookupResults) {
3981 DeclarationName Name = NameAndResult.first;
3982 DeclContext::lookup_result Result = NameAndResult.second;
3983 if (Name.getNameKind() == DeclarationName::CXXConstructorName ||
3984 Name.getNameKind() == DeclarationName::CXXConversionFunctionName) {
3985 // We have to work around a name lookup bug here where negative lookup
3986 // results for these names get cached in namespace lookup tables (these
3987 // names should never be looked up in a namespace).
3988 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!\""
, "clang/lib/Serialization/ASTWriter.cpp", 3989, __extension__
__PRETTY_FUNCTION__))
3989 "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!\""
, "clang/lib/Serialization/ASTWriter.cpp", 3989, __extension__
__PRETTY_FUNCTION__))
;
3990 continue;
3991 }
3992
3993 for (NamedDecl *ND : Result)
3994 if (!ND->isFromASTFile())
3995 GetDeclRef(ND);
3996 }
3997
3998 return 0;
3999 }
4000
4001 if (DC->getPrimaryContext() != DC)
4002 return 0;
4003
4004 // Skip contexts which don't support name lookup.
4005 if (!DC->isLookupContext())
4006 return 0;
4007
4008 // If not in C++, we perform name lookup for the translation unit via the
4009 // IdentifierInfo chains, don't bother to build a visible-declarations table.
4010 if (DC->isTranslationUnit() && !Context.getLangOpts().CPlusPlus)
4011 return 0;
4012
4013 // Serialize the contents of the mapping used for lookup. Note that,
4014 // although we have two very different code paths, the serialized
4015 // representation is the same for both cases: a declaration name,
4016 // followed by a size, followed by references to the visible
4017 // declarations that have that name.
4018 uint64_t Offset = Stream.GetCurrentBitNo();
4019 StoredDeclsMap *Map = DC->buildLookup();
4020 if (!Map || Map->empty())
4021 return 0;
4022
4023 // Create the on-disk hash table in a buffer.
4024 SmallString<4096> LookupTable;
4025 GenerateNameLookupTable(DC, LookupTable);
4026
4027 // Write the lookup table
4028 RecordData::value_type Record[] = {DECL_CONTEXT_VISIBLE};
4029 Stream.EmitRecordWithBlob(DeclContextVisibleLookupAbbrev, Record,
4030 LookupTable);
4031 ++NumVisibleDeclContexts;
4032 return Offset;
4033}
4034
4035/// Write an UPDATE_VISIBLE block for the given context.
4036///
4037/// UPDATE_VISIBLE blocks contain the declarations that are added to an existing
4038/// DeclContext in a dependent AST file. As such, they only exist for the TU
4039/// (in C++), for namespaces, and for classes with forward-declared unscoped
4040/// enumeration members (in C++11).
4041void ASTWriter::WriteDeclContextVisibleUpdate(const DeclContext *DC) {
4042 StoredDeclsMap *Map = DC->getLookupPtr();
4043 if (!Map || Map->empty())
4044 return;
4045
4046 // Create the on-disk hash table in a buffer.
4047 SmallString<4096> LookupTable;
4048 GenerateNameLookupTable(DC, LookupTable);
4049
4050 // If we're updating a namespace, select a key declaration as the key for the
4051 // update record; those are the only ones that will be checked on reload.
4052 if (isa<NamespaceDecl>(DC))
4053 DC = cast<DeclContext>(Chain->getKeyDeclaration(cast<Decl>(DC)));
4054
4055 // Write the lookup table
4056 RecordData::value_type Record[] = {UPDATE_VISIBLE, getDeclID(cast<Decl>(DC))};
4057 Stream.EmitRecordWithBlob(UpdateVisibleAbbrev, Record, LookupTable);
4058}
4059
4060/// Write an FP_PRAGMA_OPTIONS block for the given FPOptions.
4061void ASTWriter::WriteFPPragmaOptions(const FPOptionsOverride &Opts) {
4062 RecordData::value_type Record[] = {Opts.getAsOpaqueInt()};
4063 Stream.EmitRecord(FP_PRAGMA_OPTIONS, Record);
1
Calling 'BitstreamWriter::EmitRecord'
4064}
4065
4066/// Write an OPENCL_EXTENSIONS block for the given OpenCLOptions.
4067void ASTWriter::WriteOpenCLExtensions(Sema &SemaRef) {
4068 if (!SemaRef.Context.getLangOpts().OpenCL)
4069 return;
4070
4071 const OpenCLOptions &Opts = SemaRef.getOpenCLOptions();
4072 RecordData Record;
4073 for (const auto &I:Opts.OptMap) {
4074 AddString(I.getKey(), Record);
4075 auto V = I.getValue();
4076 Record.push_back(V.Supported ? 1 : 0);
4077 Record.push_back(V.Enabled ? 1 : 0);
4078 Record.push_back(V.WithPragma ? 1 : 0);
4079 Record.push_back(V.Avail);
4080 Record.push_back(V.Core);
4081 Record.push_back(V.Opt);
4082 }
4083 Stream.EmitRecord(OPENCL_EXTENSIONS, Record);
4084}
4085void ASTWriter::WriteCUDAPragmas(Sema &SemaRef) {
4086 if (SemaRef.ForceCUDAHostDeviceDepth > 0) {
4087 RecordData::value_type Record[] = {SemaRef.ForceCUDAHostDeviceDepth};
4088 Stream.EmitRecord(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH, Record);
4089 }
4090}
4091
4092void ASTWriter::WriteObjCCategories() {
4093 SmallVector<ObjCCategoriesInfo, 2> CategoriesMap;
4094 RecordData Categories;
4095
4096 for (unsigned I = 0, N = ObjCClassesWithCategories.size(); I != N; ++I) {
4097 unsigned Size = 0;
4098 unsigned StartIndex = Categories.size();
4099
4100 ObjCInterfaceDecl *Class = ObjCClassesWithCategories[I];
4101
4102 // Allocate space for the size.
4103 Categories.push_back(0);
4104
4105 // Add the categories.
4106 for (ObjCInterfaceDecl::known_categories_iterator
4107 Cat = Class->known_categories_begin(),
4108 CatEnd = Class->known_categories_end();
4109 Cat != CatEnd; ++Cat, ++Size) {
4110 assert(getDeclID(*Cat) != 0 && "Bogus category")(static_cast <bool> (getDeclID(*Cat) != 0 && "Bogus category"
) ? void (0) : __assert_fail ("getDeclID(*Cat) != 0 && \"Bogus category\""
, "clang/lib/Serialization/ASTWriter.cpp", 4110, __extension__
__PRETTY_FUNCTION__))
;
4111 AddDeclRef(*Cat, Categories);
4112 }
4113
4114 // Update the size.
4115 Categories[StartIndex] = Size;
4116
4117 // Record this interface -> category map.
4118 ObjCCategoriesInfo CatInfo = { getDeclID(Class), StartIndex };
4119 CategoriesMap.push_back(CatInfo);
4120 }
4121
4122 // Sort the categories map by the definition ID, since the reader will be
4123 // performing binary searches on this information.
4124 llvm::array_pod_sort(CategoriesMap.begin(), CategoriesMap.end());
4125
4126 // Emit the categories map.
4127 using namespace llvm;
4128
4129 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4130 Abbrev->Add(BitCodeAbbrevOp(OBJC_CATEGORIES_MAP));
4131 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # of entries
4132 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4133 unsigned AbbrevID = Stream.EmitAbbrev(std::move(Abbrev));
4134
4135 RecordData::value_type Record[] = {OBJC_CATEGORIES_MAP, CategoriesMap.size()};
4136 Stream.EmitRecordWithBlob(AbbrevID, Record,
4137 reinterpret_cast<char *>(CategoriesMap.data()),
4138 CategoriesMap.size() * sizeof(ObjCCategoriesInfo));
4139
4140 // Emit the category lists.
4141 Stream.EmitRecord(OBJC_CATEGORIES, Categories);
4142}
4143
4144void ASTWriter::WriteLateParsedTemplates(Sema &SemaRef) {
4145 Sema::LateParsedTemplateMapT &LPTMap = SemaRef.LateParsedTemplateMap;
4146
4147 if (LPTMap.empty())
4148 return;
4149
4150 RecordData Record;
4151 for (auto &LPTMapEntry : LPTMap) {
4152 const FunctionDecl *FD = LPTMapEntry.first;
4153 LateParsedTemplate &LPT = *LPTMapEntry.second;
4154 AddDeclRef(FD, Record);
4155 AddDeclRef(LPT.D, Record);
4156 Record.push_back(LPT.Toks.size());
4157
4158 for (const auto &Tok : LPT.Toks) {
4159 AddToken(Tok, Record);
4160 }
4161 }
4162 Stream.EmitRecord(LATE_PARSED_TEMPLATE, Record);
4163}
4164
4165/// Write the state of 'pragma clang optimize' at the end of the module.
4166void ASTWriter::WriteOptimizePragmaOptions(Sema &SemaRef) {
4167 RecordData Record;
4168 SourceLocation PragmaLoc = SemaRef.getOptimizeOffPragmaLocation();
4169 AddSourceLocation(PragmaLoc, Record);
4170 Stream.EmitRecord(OPTIMIZE_PRAGMA_OPTIONS, Record);
4171}
4172
4173/// Write the state of 'pragma ms_struct' at the end of the module.
4174void ASTWriter::WriteMSStructPragmaOptions(Sema &SemaRef) {
4175 RecordData Record;
4176 Record.push_back(SemaRef.MSStructPragmaOn ? PMSST_ON : PMSST_OFF);
4177 Stream.EmitRecord(MSSTRUCT_PRAGMA_OPTIONS, Record);
4178}
4179
4180/// Write the state of 'pragma pointers_to_members' at the end of the
4181//module.
4182void ASTWriter::WriteMSPointersToMembersPragmaOptions(Sema &SemaRef) {
4183 RecordData Record;
4184 Record.push_back(SemaRef.MSPointerToMemberRepresentationMethod);
4185 AddSourceLocation(SemaRef.ImplicitMSInheritanceAttrLoc, Record);
4186 Stream.EmitRecord(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS, Record);
4187}
4188
4189/// Write the state of 'pragma align/pack' at the end of the module.
4190void ASTWriter::WritePackPragmaOptions(Sema &SemaRef) {
4191 // Don't serialize pragma align/pack state for modules, since it should only
4192 // take effect on a per-submodule basis.
4193 if (WritingModule)
4194 return;
4195
4196 RecordData Record;
4197 AddAlignPackInfo(SemaRef.AlignPackStack.CurrentValue, Record);
4198 AddSourceLocation(SemaRef.AlignPackStack.CurrentPragmaLocation, Record);
4199 Record.push_back(SemaRef.AlignPackStack.Stack.size());
4200 for (const auto &StackEntry : SemaRef.AlignPackStack.Stack) {
4201 AddAlignPackInfo(StackEntry.Value, Record);
4202 AddSourceLocation(StackEntry.PragmaLocation, Record);
4203 AddSourceLocation(StackEntry.PragmaPushLocation, Record);
4204 AddString(StackEntry.StackSlotLabel, Record);
4205 }
4206 Stream.EmitRecord(ALIGN_PACK_PRAGMA_OPTIONS, Record);
4207}
4208
4209/// Write the state of 'pragma float_control' at the end of the module.
4210void ASTWriter::WriteFloatControlPragmaOptions(Sema &SemaRef) {
4211 // Don't serialize pragma float_control state for modules,
4212 // since it should only take effect on a per-submodule basis.
4213 if (WritingModule)
4214 return;
4215
4216 RecordData Record;
4217 Record.push_back(SemaRef.FpPragmaStack.CurrentValue.getAsOpaqueInt());
4218 AddSourceLocation(SemaRef.FpPragmaStack.CurrentPragmaLocation, Record);
4219 Record.push_back(SemaRef.FpPragmaStack.Stack.size());
4220 for (const auto &StackEntry : SemaRef.FpPragmaStack.Stack) {
4221 Record.push_back(StackEntry.Value.getAsOpaqueInt());
4222 AddSourceLocation(StackEntry.PragmaLocation, Record);
4223 AddSourceLocation(StackEntry.PragmaPushLocation, Record);
4224 AddString(StackEntry.StackSlotLabel, Record);
4225 }
4226 Stream.EmitRecord(FLOAT_CONTROL_PRAGMA_OPTIONS, Record);
4227}
4228
4229void ASTWriter::WriteModuleFileExtension(Sema &SemaRef,
4230 ModuleFileExtensionWriter &Writer) {
4231 // Enter the extension block.
4232 Stream.EnterSubblock(EXTENSION_BLOCK_ID, 4);
4233
4234 // Emit the metadata record abbreviation.
4235 auto Abv = std::make_shared<llvm::BitCodeAbbrev>();
4236 Abv->Add(llvm::BitCodeAbbrevOp(EXTENSION_METADATA));
4237 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4238 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4239 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4240 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4241 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4242 unsigned Abbrev = Stream.EmitAbbrev(std::move(Abv));
4243
4244 // Emit the metadata record.
4245 RecordData Record;
4246 auto Metadata = Writer.getExtension()->getExtensionMetadata();
4247 Record.push_back(EXTENSION_METADATA);
4248 Record.push_back(Metadata.MajorVersion);
4249 Record.push_back(Metadata.MinorVersion);
4250 Record.push_back(Metadata.BlockName.size());
4251 Record.push_back(Metadata.UserInfo.size());
4252 SmallString<64> Buffer;
4253 Buffer += Metadata.BlockName;
4254 Buffer += Metadata.UserInfo;
4255 Stream.EmitRecordWithBlob(Abbrev, Record, Buffer);
4256
4257 // Emit the contents of the extension block.
4258 Writer.writeExtensionContents(SemaRef, Stream);
4259
4260 // Exit the extension block.
4261 Stream.ExitBlock();
4262}
4263
4264//===----------------------------------------------------------------------===//
4265// General Serialization Routines
4266//===----------------------------------------------------------------------===//
4267
4268void ASTRecordWriter::AddAttr(const Attr *A) {
4269 auto &Record = *this;
4270 if (!A)
4271 return Record.push_back(0);
4272 Record.push_back(A->getKind() + 1); // FIXME: stable encoding, target attrs
4273
4274 Record.AddIdentifierRef(A->getAttrName());
4275 Record.AddIdentifierRef(A->getScopeName());
4276 Record.AddSourceRange(A->getRange());
4277 Record.AddSourceLocation(A->getScopeLoc());
4278 Record.push_back(A->getParsedKind());
4279 Record.push_back(A->getSyntax());
4280 Record.push_back(A->getAttributeSpellingListIndexRaw());
4281
4282#include "clang/Serialization/AttrPCHWrite.inc"
4283}
4284
4285/// Emit the list of attributes to the specified record.
4286void ASTRecordWriter::AddAttributes(ArrayRef<const Attr *> Attrs) {
4287 push_back(Attrs.size());
4288 for (const auto *A : Attrs)
4289 AddAttr(A);
4290}
4291
4292void ASTWriter::AddToken(const Token &Tok, RecordDataImpl &Record) {
4293 AddSourceLocation(Tok.getLocation(), Record);
4294 Record.push_back(Tok.getLength());
4295
4296 // FIXME: When reading literal tokens, reconstruct the literal pointer
4297 // if it is needed.
4298 AddIdentifierRef(Tok.getIdentifierInfo(), Record);
4299 // FIXME: Should translate token kind to a stable encoding.
4300 Record.push_back(Tok.getKind());
4301 // FIXME: Should translate token flags to a stable encoding.
4302 Record.push_back(Tok.getFlags());
4303}
4304
4305void ASTWriter::AddString(StringRef Str, RecordDataImpl &Record) {
4306 Record.push_back(Str.size());
4307 Record.insert(Record.end(), Str.begin(), Str.end());
4308}
4309
4310bool ASTWriter::PreparePathForOutput(SmallVectorImpl<char> &Path) {
4311 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 4311, __extension__
__PRETTY_FUNCTION__))
;
4312
4313 bool Changed =
4314 cleanPathForOutput(Context->getSourceManager().getFileManager(), Path);
4315
4316 // Remove a prefix to make the path relative, if relevant.
4317 const char *PathBegin = Path.data();
4318 const char *PathPtr =
4319 adjustFilenameForRelocatableAST(PathBegin, BaseDirectory);
4320 if (PathPtr != PathBegin) {
4321 Path.erase(Path.begin(), Path.begin() + (PathPtr - PathBegin));
4322 Changed = true;
4323 }
4324
4325 return Changed;
4326}
4327
4328void ASTWriter::AddPath(StringRef Path, RecordDataImpl &Record) {
4329 SmallString<128> FilePath(Path);
4330 PreparePathForOutput(FilePath);
4331 AddString(FilePath, Record);
4332}
4333
4334void ASTWriter::EmitRecordWithPath(unsigned Abbrev, RecordDataRef Record,
4335 StringRef Path) {
4336 SmallString<128> FilePath(Path);
4337 PreparePathForOutput(FilePath);
4338 Stream.EmitRecordWithBlob(Abbrev, Record, FilePath);
4339}
4340
4341void ASTWriter::AddVersionTuple(const VersionTuple &Version,
4342 RecordDataImpl &Record) {
4343 Record.push_back(Version.getMajor());
4344 if (Optional<unsigned> Minor = Version.getMinor())
4345 Record.push_back(*Minor + 1);
4346 else
4347 Record.push_back(0);
4348 if (Optional<unsigned> Subminor = Version.getSubminor())
4349 Record.push_back(*Subminor + 1);
4350 else
4351 Record.push_back(0);
4352}
4353
4354/// Note that the identifier II occurs at the given offset
4355/// within the identifier table.
4356void ASTWriter::SetIdentifierOffset(const IdentifierInfo *II, uint32_t Offset) {
4357 IdentID ID = IdentifierIDs[II];
4358 // Only store offsets new to this AST file. Other identifier names are looked
4359 // up earlier in the chain and thus don't need an offset.
4360 if (ID >= FirstIdentID)
4361 IdentifierOffsets[ID - FirstIdentID] = Offset;
4362}
4363
4364/// Note that the selector Sel occurs at the given offset
4365/// within the method pool/selector table.
4366void ASTWriter::SetSelectorOffset(Selector Sel, uint32_t Offset) {
4367 unsigned ID = SelectorIDs[Sel];
4368 assert(ID && "Unknown selector")(static_cast <bool> (ID && "Unknown selector") ?
void (0) : __assert_fail ("ID && \"Unknown selector\""
, "clang/lib/Serialization/ASTWriter.cpp", 4368, __extension__
__PRETTY_FUNCTION__))
;
4369 // Don't record offsets for selectors that are also available in a different
4370 // file.
4371 if (ID < FirstSelectorID)
4372 return;
4373 SelectorOffsets[ID - FirstSelectorID] = Offset;
4374}
4375
4376ASTWriter::ASTWriter(llvm::BitstreamWriter &Stream,
4377 SmallVectorImpl<char> &Buffer,
4378 InMemoryModuleCache &ModuleCache,
4379 ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions,
4380 bool IncludeTimestamps)
4381 : Stream(Stream), Buffer(Buffer), ModuleCache(ModuleCache),
4382 IncludeTimestamps(IncludeTimestamps) {
4383 for (const auto &Ext : Extensions) {
4384 if (auto Writer = Ext->createExtensionWriter(*this))
4385 ModuleFileExtensionWriters.push_back(std::move(Writer));
4386 }
4387}
4388
4389ASTWriter::~ASTWriter() = default;
4390
4391const LangOptions &ASTWriter::getLangOpts() const {
4392 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 4392, __extension__
__PRETTY_FUNCTION__))
;
4393 return Context->getLangOpts();
4394}
4395
4396time_t ASTWriter::getTimestampForOutput(const FileEntry *E) const {
4397 return IncludeTimestamps ? E->getModificationTime() : 0;
4398}
4399
4400ASTFileSignature ASTWriter::WriteAST(Sema &SemaRef,
4401 const std::string &OutputFile,
4402 Module *WritingModule, StringRef isysroot,
4403 bool hasErrors,
4404 bool ShouldCacheASTInMemory) {
4405 WritingAST = true;
4406
4407 ASTHasCompilerErrors = hasErrors;
4408
4409 // Emit the file header.
4410 Stream.Emit((unsigned)'C', 8);
4411 Stream.Emit((unsigned)'P', 8);
4412 Stream.Emit((unsigned)'C', 8);
4413 Stream.Emit((unsigned)'H', 8);
4414
4415 WriteBlockInfoBlock();
4416
4417 Context = &SemaRef.Context;
4418 PP = &SemaRef.PP;
4419 this->WritingModule = WritingModule;
4420 ASTFileSignature Signature =
4421 WriteASTCore(SemaRef, isysroot, OutputFile, WritingModule);
4422 Context = nullptr;
4423 PP = nullptr;
4424 this->WritingModule = nullptr;
4425 this->BaseDirectory.clear();
4426
4427 WritingAST = false;
4428 if (ShouldCacheASTInMemory) {
4429 // Construct MemoryBuffer and update buffer manager.
4430 ModuleCache.addBuiltPCM(OutputFile,
4431 llvm::MemoryBuffer::getMemBufferCopy(
4432 StringRef(Buffer.begin(), Buffer.size())));
4433 }
4434 return Signature;
4435}
4436
4437template<typename Vector>
4438static void AddLazyVectorDecls(ASTWriter &Writer, Vector &Vec,
4439 ASTWriter::RecordData &Record) {
4440 for (typename Vector::iterator I = Vec.begin(nullptr, true), E = Vec.end();
4441 I != E; ++I) {
4442 Writer.AddDeclRef(*I, Record);
4443 }
4444}
4445
4446ASTFileSignature ASTWriter::WriteASTCore(Sema &SemaRef, StringRef isysroot,
4447 const std::string &OutputFile,
4448 Module *WritingModule) {
4449 using namespace llvm;
4450
4451 bool isModule = WritingModule != nullptr;
4452
4453 // Make sure that the AST reader knows to finalize itself.
4454 if (Chain)
4455 Chain->finalizeForWriting();
4456
4457 ASTContext &Context = SemaRef.Context;
4458 Preprocessor &PP = SemaRef.PP;
4459
4460 // Set up predefined declaration IDs.
4461 auto RegisterPredefDecl = [&] (Decl *D, PredefinedDeclIDs ID) {
4462 if (D) {
4463 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 4463, __extension__
__PRETTY_FUNCTION__))
;
4464 DeclIDs[D] = ID;
4465 }
4466 };
4467 RegisterPredefDecl(Context.getTranslationUnitDecl(),
4468 PREDEF_DECL_TRANSLATION_UNIT_ID);
4469 RegisterPredefDecl(Context.ObjCIdDecl, PREDEF_DECL_OBJC_ID_ID);
4470 RegisterPredefDecl(Context.ObjCSelDecl, PREDEF_DECL_OBJC_SEL_ID);
4471 RegisterPredefDecl(Context.ObjCClassDecl, PREDEF_DECL_OBJC_CLASS_ID);
4472 RegisterPredefDecl(Context.ObjCProtocolClassDecl,
4473 PREDEF_DECL_OBJC_PROTOCOL_ID);
4474 RegisterPredefDecl(Context.Int128Decl, PREDEF_DECL_INT_128_ID);
4475 RegisterPredefDecl(Context.UInt128Decl, PREDEF_DECL_UNSIGNED_INT_128_ID);
4476 RegisterPredefDecl(Context.ObjCInstanceTypeDecl,
4477 PREDEF_DECL_OBJC_INSTANCETYPE_ID);
4478 RegisterPredefDecl(Context.BuiltinVaListDecl, PREDEF_DECL_BUILTIN_VA_LIST_ID);
4479 RegisterPredefDecl(Context.VaListTagDecl, PREDEF_DECL_VA_LIST_TAG);
4480 RegisterPredefDecl(Context.BuiltinMSVaListDecl,
4481 PREDEF_DECL_BUILTIN_MS_VA_LIST_ID);
4482 RegisterPredefDecl(Context.MSGuidTagDecl,
4483 PREDEF_DECL_BUILTIN_MS_GUID_ID);
4484 RegisterPredefDecl(Context.ExternCContext, PREDEF_DECL_EXTERN_C_CONTEXT_ID);
4485 RegisterPredefDecl(Context.MakeIntegerSeqDecl,
4486 PREDEF_DECL_MAKE_INTEGER_SEQ_ID);
4487 RegisterPredefDecl(Context.CFConstantStringTypeDecl,
4488 PREDEF_DECL_CF_CONSTANT_STRING_ID);
4489 RegisterPredefDecl(Context.CFConstantStringTagDecl,
4490 PREDEF_DECL_CF_CONSTANT_STRING_TAG_ID);
4491 RegisterPredefDecl(Context.TypePackElementDecl,
4492 PREDEF_DECL_TYPE_PACK_ELEMENT_ID);
4493
4494 // Build a record containing all of the tentative definitions in this file, in
4495 // TentativeDefinitions order. Generally, this record will be empty for
4496 // headers.
4497 RecordData TentativeDefinitions;
4498 AddLazyVectorDecls(*this, SemaRef.TentativeDefinitions, TentativeDefinitions);
4499
4500 // Build a record containing all of the file scoped decls in this file.
4501 RecordData UnusedFileScopedDecls;
4502 if (!isModule)
4503 AddLazyVectorDecls(*this, SemaRef.UnusedFileScopedDecls,
4504 UnusedFileScopedDecls);
4505
4506 // Build a record containing all of the delegating constructors we still need
4507 // to resolve.
4508 RecordData DelegatingCtorDecls;
4509 if (!isModule)
4510 AddLazyVectorDecls(*this, SemaRef.DelegatingCtorDecls, DelegatingCtorDecls);
4511
4512 // Write the set of weak, undeclared identifiers. We always write the
4513 // entire table, since later PCH files in a PCH chain are only interested in
4514 // the results at the end of the chain.
4515 RecordData WeakUndeclaredIdentifiers;
4516 for (auto &WeakUndeclaredIdentifier : SemaRef.WeakUndeclaredIdentifiers) {
4517 IdentifierInfo *II = WeakUndeclaredIdentifier.first;
4518 WeakInfo &WI = WeakUndeclaredIdentifier.second;
4519 AddIdentifierRef(II, WeakUndeclaredIdentifiers);
4520 AddIdentifierRef(WI.getAlias(), WeakUndeclaredIdentifiers);
4521 AddSourceLocation(WI.getLocation(), WeakUndeclaredIdentifiers);
4522 WeakUndeclaredIdentifiers.push_back(WI.getUsed());
4523 }
4524
4525 // Build a record containing all of the ext_vector declarations.
4526 RecordData ExtVectorDecls;
4527 AddLazyVectorDecls(*this, SemaRef.ExtVectorDecls, ExtVectorDecls);
4528
4529 // Build a record containing all of the VTable uses information.
4530 RecordData VTableUses;
4531 if (!SemaRef.VTableUses.empty()) {
4532 for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I) {
4533 AddDeclRef(SemaRef.VTableUses[I].first, VTableUses);
4534 AddSourceLocation(SemaRef.VTableUses[I].second, VTableUses);
4535 VTableUses.push_back(SemaRef.VTablesUsed[SemaRef.VTableUses[I].first]);
4536 }
4537 }
4538
4539 // Build a record containing all of the UnusedLocalTypedefNameCandidates.
4540 RecordData UnusedLocalTypedefNameCandidates;
4541 for (const TypedefNameDecl *TD : SemaRef.UnusedLocalTypedefNameCandidates)
4542 AddDeclRef(TD, UnusedLocalTypedefNameCandidates);
4543
4544 // Build a record containing all of pending implicit instantiations.
4545 RecordData PendingInstantiations;
4546 for (const auto &I : SemaRef.PendingInstantiations) {
4547 AddDeclRef(I.first, PendingInstantiations);
4548 AddSourceLocation(I.second, PendingInstantiations);
4549 }
4550 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!\""
, "clang/lib/Serialization/ASTWriter.cpp", 4551, __extension__
__PRETTY_FUNCTION__))
4551 "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!\""
, "clang/lib/Serialization/ASTWriter.cpp", 4551, __extension__
__PRETTY_FUNCTION__))
;
4552
4553 // Build a record containing some declaration references.
4554 RecordData SemaDeclRefs;
4555 if (SemaRef.StdNamespace || SemaRef.StdBadAlloc || SemaRef.StdAlignValT) {
4556 AddDeclRef(SemaRef.getStdNamespace(), SemaDeclRefs);
4557 AddDeclRef(SemaRef.getStdBadAlloc(), SemaDeclRefs);
4558 AddDeclRef(SemaRef.getStdAlignValT(), SemaDeclRefs);
4559 }
4560
4561 RecordData CUDASpecialDeclRefs;
4562 if (Context.getcudaConfigureCallDecl()) {
4563 AddDeclRef(Context.getcudaConfigureCallDecl(), CUDASpecialDeclRefs);
4564 }
4565
4566 // Build a record containing all of the known namespaces.
4567 RecordData KnownNamespaces;
4568 for (const auto &I : SemaRef.KnownNamespaces) {
4569 if (!I.second)
4570 AddDeclRef(I.first, KnownNamespaces);
4571 }
4572
4573 // Build a record of all used, undefined objects that require definitions.
4574 RecordData UndefinedButUsed;
4575
4576 SmallVector<std::pair<NamedDecl *, SourceLocation>, 16> Undefined;
4577 SemaRef.getUndefinedButUsed(Undefined);
4578 for (const auto &I : Undefined) {
4579 AddDeclRef(I.first, UndefinedButUsed);
4580 AddSourceLocation(I.second, UndefinedButUsed);
4581 }
4582
4583 // Build a record containing all delete-expressions that we would like to
4584 // analyze later in AST.
4585 RecordData DeleteExprsToAnalyze;
4586
4587 if (!isModule) {
4588 for (const auto &DeleteExprsInfo :
4589 SemaRef.getMismatchingDeleteExpressions()) {
4590 AddDeclRef(DeleteExprsInfo.first, DeleteExprsToAnalyze);
4591 DeleteExprsToAnalyze.push_back(DeleteExprsInfo.second.size());
4592 for (const auto &DeleteLoc : DeleteExprsInfo.second) {
4593 AddSourceLocation(DeleteLoc.first, DeleteExprsToAnalyze);
4594 DeleteExprsToAnalyze.push_back(DeleteLoc.second);
4595 }
4596 }
4597 }
4598
4599 // Write the control block
4600 WriteControlBlock(PP, Context, isysroot, OutputFile);
4601
4602 // Write the remaining AST contents.
4603 Stream.FlushToWord();
4604 ASTBlockRange.first = Stream.GetCurrentBitNo();
4605 Stream.EnterSubblock(AST_BLOCK_ID, 5);
4606 ASTBlockStartOffset = Stream.GetCurrentBitNo();
4607
4608 // This is so that older clang versions, before the introduction
4609 // of the control block, can read and reject the newer PCH format.
4610 {
4611 RecordData Record = {VERSION_MAJOR};
4612 Stream.EmitRecord(METADATA_OLD_FORMAT, Record);
4613 }
4614
4615 // Create a lexical update block containing all of the declarations in the
4616 // translation unit that do not come from other AST files.
4617 const TranslationUnitDecl *TU = Context.getTranslationUnitDecl();
4618 SmallVector<uint32_t, 128> NewGlobalKindDeclPairs;
4619 for (const auto *D : TU->noload_decls()) {
4620 if (!D->isFromASTFile()) {
4621 NewGlobalKindDeclPairs.push_back(D->getKind());
4622 NewGlobalKindDeclPairs.push_back(GetDeclRef(D));
4623 }
4624 }
4625
4626 auto Abv = std::make_shared<BitCodeAbbrev>();
4627 Abv->Add(llvm::BitCodeAbbrevOp(TU_UPDATE_LEXICAL));
4628 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4629 unsigned TuUpdateLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv));
4630 {
4631 RecordData::value_type Record[] = {TU_UPDATE_LEXICAL};
4632 Stream.EmitRecordWithBlob(TuUpdateLexicalAbbrev, Record,
4633 bytes(NewGlobalKindDeclPairs));
4634 }
4635
4636 // And a visible updates block for the translation unit.
4637 Abv = std::make_shared<BitCodeAbbrev>();
4638 Abv->Add(llvm::BitCodeAbbrevOp(UPDATE_VISIBLE));
4639 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4640 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4641 UpdateVisibleAbbrev = Stream.EmitAbbrev(std::move(Abv));
4642 WriteDeclContextVisibleUpdate(TU);
4643
4644 // If we have any extern "C" names, write out a visible update for them.
4645 if (Context.ExternCContext)
4646 WriteDeclContextVisibleUpdate(Context.ExternCContext);
4647
4648 // If the translation unit has an anonymous namespace, and we don't already
4649 // have an update block for it, write it as an update block.
4650 // FIXME: Why do we not do this if there's already an update block?
4651 if (NamespaceDecl *NS = TU->getAnonymousNamespace()) {
4652 ASTWriter::UpdateRecord &Record = DeclUpdates[TU];
4653 if (Record.empty())
4654 Record.push_back(DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, NS));
4655 }
4656
4657 // Add update records for all mangling numbers and static local numbers.
4658 // These aren't really update records, but this is a convenient way of
4659 // tagging this rare extra data onto the declarations.
4660 for (const auto &Number : Context.MangleNumbers)
4661 if (!Number.first->isFromASTFile())
4662 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_MANGLING_NUMBER,
4663 Number.second));
4664 for (const auto &Number : Context.StaticLocalNumbers)
4665 if (!Number.first->isFromASTFile())
4666 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_STATIC_LOCAL_NUMBER,
4667 Number.second));
4668
4669 // Make sure visible decls, added to DeclContexts previously loaded from
4670 // an AST file, are registered for serialization. Likewise for template
4671 // specializations added to imported templates.
4672 for (const auto *I : DeclsToEmitEvenIfUnreferenced) {
4673 GetDeclRef(I);
4674 }
4675
4676 // Make sure all decls associated with an identifier are registered for
4677 // serialization, if we're storing decls with identifiers.
4678 if (!WritingModule || !getLangOpts().CPlusPlus) {
4679 llvm::SmallVector<const IdentifierInfo*, 256> IIs;
4680 for (const auto &ID : PP.getIdentifierTable()) {
4681 const IdentifierInfo *II = ID.second;
4682 if (!Chain || !II->isFromAST() || II->hasChangedSinceDeserialization())
4683 IIs.push_back(II);
4684 }
4685 // Sort the identifiers to visit based on their name.
4686 llvm::sort(IIs, llvm::deref<std::less<>>());
4687 for (const IdentifierInfo *II : IIs) {
4688 for (IdentifierResolver::iterator D = SemaRef.IdResolver.begin(II),
4689 DEnd = SemaRef.IdResolver.end();
4690 D != DEnd; ++D) {
4691 GetDeclRef(*D);
4692 }
4693 }
4694 }
4695
4696 // For method pool in the module, if it contains an entry for a selector,
4697 // the entry should be complete, containing everything introduced by that
4698 // module and all modules it imports. It's possible that the entry is out of
4699 // date, so we need to pull in the new content here.
4700
4701 // It's possible that updateOutOfDateSelector can update SelectorIDs. To be
4702 // safe, we copy all selectors out.
4703 llvm::SmallVector<Selector, 256> AllSelectors;
4704 for (auto &SelectorAndID : SelectorIDs)
4705 AllSelectors.push_back(SelectorAndID.first);
4706 for (auto &Selector : AllSelectors)
4707 SemaRef.updateOutOfDateSelector(Selector);
4708
4709 // Form the record of special types.
4710 RecordData SpecialTypes;
4711 AddTypeRef(Context.getRawCFConstantStringType(), SpecialTypes);
4712 AddTypeRef(Context.getFILEType(), SpecialTypes);
4713 AddTypeRef(Context.getjmp_bufType(), SpecialTypes);
4714 AddTypeRef(Context.getsigjmp_bufType(), SpecialTypes);
4715 AddTypeRef(Context.ObjCIdRedefinitionType, SpecialTypes);
4716 AddTypeRef(Context.ObjCClassRedefinitionType, SpecialTypes);
4717 AddTypeRef(Context.ObjCSelRedefinitionType, SpecialTypes);
4718 AddTypeRef(Context.getucontext_tType(), SpecialTypes);
4719
4720 if (Chain) {
4721 // Write the mapping information describing our module dependencies and how
4722 // each of those modules were mapped into our own offset/ID space, so that
4723 // the reader can build the appropriate mapping to its own offset/ID space.
4724 // The map consists solely of a blob with the following format:
4725 // *(module-kind:i8
4726 // module-name-len:i16 module-name:len*i8
4727 // source-location-offset:i32
4728 // identifier-id:i32
4729 // preprocessed-entity-id:i32
4730 // macro-definition-id:i32
4731 // submodule-id:i32
4732 // selector-id:i32
4733 // declaration-id:i32
4734 // c++-base-specifiers-id:i32
4735 // type-id:i32)
4736 //
4737 // module-kind is the ModuleKind enum value. If it is MK_PrebuiltModule,
4738 // MK_ExplicitModule or MK_ImplicitModule, then the module-name is the
4739 // module name. Otherwise, it is the module file name.
4740 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4741 Abbrev->Add(BitCodeAbbrevOp(MODULE_OFFSET_MAP));
4742 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4743 unsigned ModuleOffsetMapAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
4744 SmallString<2048> Buffer;
4745 {
4746 llvm::raw_svector_ostream Out(Buffer);
4747 for (ModuleFile &M : Chain->ModuleMgr) {
4748 using namespace llvm::support;
4749
4750 endian::Writer LE(Out, little);
4751 LE.write<uint8_t>(static_cast<uint8_t>(M.Kind));
4752 StringRef Name = M.isModule() ? M.ModuleName : M.FileName;
4753 LE.write<uint16_t>(Name.size());
4754 Out.write(Name.data(), Name.size());
4755
4756 // Note: if a base ID was uint max, it would not be possible to load
4757 // another module after it or have more than one entity inside it.
4758 uint32_t None = std::numeric_limits<uint32_t>::max();
4759
4760 auto writeBaseIDOrNone = [&](auto BaseID, bool ShouldWrite) {
4761 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 4761, __extension__
__PRETTY_FUNCTION__))
;
4762 if (ShouldWrite)
4763 LE.write<uint32_t>(BaseID);
4764 else
4765 LE.write<uint32_t>(None);
4766 };
4767
4768 // These values should be unique within a chain, since they will be read
4769 // as keys into ContinuousRangeMaps.
4770 writeBaseIDOrNone(M.SLocEntryBaseOffset, M.LocalNumSLocEntries);
4771 writeBaseIDOrNone(M.BaseIdentifierID, M.LocalNumIdentifiers);
4772 writeBaseIDOrNone(M.BaseMacroID, M.LocalNumMacros);
4773 writeBaseIDOrNone(M.BasePreprocessedEntityID,
4774 M.NumPreprocessedEntities);
4775 writeBaseIDOrNone(M.BaseSubmoduleID, M.LocalNumSubmodules);
4776 writeBaseIDOrNone(M.BaseSelectorID, M.LocalNumSelectors);
4777 writeBaseIDOrNone(M.BaseDeclID, M.LocalNumDecls);
4778 writeBaseIDOrNone(M.BaseTypeIndex, M.LocalNumTypes);
4779 }
4780 }
4781 RecordData::value_type Record[] = {MODULE_OFFSET_MAP};
4782 Stream.EmitRecordWithBlob(ModuleOffsetMapAbbrev, Record,
4783 Buffer.data(), Buffer.size());
4784 }
4785
4786 // Build a record containing all of the DeclsToCheckForDeferredDiags.
4787 SmallVector<serialization::DeclID, 64> DeclsToCheckForDeferredDiags;
4788 for (auto *D : SemaRef.DeclsToCheckForDeferredDiags)
4789 DeclsToCheckForDeferredDiags.push_back(GetDeclRef(D));
4790
4791 RecordData DeclUpdatesOffsetsRecord;
4792
4793 // Keep writing types, declarations, and declaration update records
4794 // until we've emitted all of them.
4795 Stream.EnterSubblock(DECLTYPES_BLOCK_ID, /*bits for abbreviations*/5);
4796 DeclTypesBlockStartOffset = Stream.GetCurrentBitNo();
4797 WriteTypeAbbrevs();
4798 WriteDeclAbbrevs();
4799 do {
4800 WriteDeclUpdatesBlocks(DeclUpdatesOffsetsRecord);
4801 while (!DeclTypesToEmit.empty()) {
4802 DeclOrType DOT = DeclTypesToEmit.front();
4803 DeclTypesToEmit.pop();
4804 if (DOT.isType())
4805 WriteType(DOT.getType());
4806 else
4807 WriteDecl(Context, DOT.getDecl());
4808 }
4809 } while (!DeclUpdates.empty());
4810 Stream.ExitBlock();
4811
4812 DoneWritingDeclsAndTypes = true;
4813
4814 // These things can only be done once we've written out decls and types.
4815 WriteTypeDeclOffsets();
4816 if (!DeclUpdatesOffsetsRecord.empty())
4817 Stream.EmitRecord(DECL_UPDATE_OFFSETS, DeclUpdatesOffsetsRecord);
4818 WriteFileDeclIDsMap();
4819 WriteSourceManagerBlock(Context.getSourceManager(), PP);
4820 WriteComments();
4821 WritePreprocessor(PP, isModule);
4822 WriteHeaderSearch(PP.getHeaderSearchInfo());
4823 WriteSelectors(SemaRef);
4824 WriteReferencedSelectorsPool(SemaRef);
4825 WriteLateParsedTemplates(SemaRef);
4826 WriteIdentifierTable(PP, SemaRef.IdResolver, isModule);
4827 WriteFPPragmaOptions(SemaRef.CurFPFeatureOverrides());
4828 WriteOpenCLExtensions(SemaRef);
4829 WriteCUDAPragmas(SemaRef);
4830
4831 // If we're emitting a module, write out the submodule information.
4832 if (WritingModule)
4833 WriteSubmodules(WritingModule);
4834
4835 Stream.EmitRecord(SPECIAL_TYPES, SpecialTypes);
4836
4837 // Write the record containing external, unnamed definitions.
4838 if (!EagerlyDeserializedDecls.empty())
4839 Stream.EmitRecord(EAGERLY_DESERIALIZED_DECLS, EagerlyDeserializedDecls);
4840
4841 if (!ModularCodegenDecls.empty())
4842 Stream.EmitRecord(MODULAR_CODEGEN_DECLS, ModularCodegenDecls);
4843
4844 // Write the record containing tentative definitions.
4845 if (!TentativeDefinitions.empty())
4846 Stream.EmitRecord(TENTATIVE_DEFINITIONS, TentativeDefinitions);
4847
4848 // Write the record containing unused file scoped decls.
4849 if (!UnusedFileScopedDecls.empty())
4850 Stream.EmitRecord(UNUSED_FILESCOPED_DECLS, UnusedFileScopedDecls);
4851
4852 // Write the record containing weak undeclared identifiers.
4853 if (!WeakUndeclaredIdentifiers.empty())
4854 Stream.EmitRecord(WEAK_UNDECLARED_IDENTIFIERS,
4855 WeakUndeclaredIdentifiers);
4856
4857 // Write the record containing ext_vector type names.
4858 if (!ExtVectorDecls.empty())
4859 Stream.EmitRecord(EXT_VECTOR_DECLS, ExtVectorDecls);
4860
4861 // Write the record containing VTable uses information.
4862 if (!VTableUses.empty())
4863 Stream.EmitRecord(VTABLE_USES, VTableUses);
4864
4865 // Write the record containing potentially unused local typedefs.
4866 if (!UnusedLocalTypedefNameCandidates.empty())
4867 Stream.EmitRecord(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES,
4868 UnusedLocalTypedefNameCandidates);
4869
4870 // Write the record containing pending implicit instantiations.
4871 if (!PendingInstantiations.empty())
4872 Stream.EmitRecord(PENDING_IMPLICIT_INSTANTIATIONS, PendingInstantiations);
4873
4874 // Write the record containing declaration references of Sema.
4875 if (!SemaDeclRefs.empty())
4876 Stream.EmitRecord(SEMA_DECL_REFS, SemaDeclRefs);
4877
4878 // Write the record containing decls to be checked for deferred diags.
4879 if (!DeclsToCheckForDeferredDiags.empty())
4880 Stream.EmitRecord(DECLS_TO_CHECK_FOR_DEFERRED_DIAGS,
4881 DeclsToCheckForDeferredDiags);
4882
4883 // Write the record containing CUDA-specific declaration references.
4884 if (!CUDASpecialDeclRefs.empty())
4885 Stream.EmitRecord(CUDA_SPECIAL_DECL_REFS, CUDASpecialDeclRefs);
4886
4887 // Write the delegating constructors.
4888 if (!DelegatingCtorDecls.empty())
4889 Stream.EmitRecord(DELEGATING_CTORS, DelegatingCtorDecls);
4890
4891 // Write the known namespaces.
4892 if (!KnownNamespaces.empty())
4893 Stream.EmitRecord(KNOWN_NAMESPACES, KnownNamespaces);
4894
4895 // Write the undefined internal functions and variables, and inline functions.
4896 if (!UndefinedButUsed.empty())
4897 Stream.EmitRecord(UNDEFINED_BUT_USED, UndefinedButUsed);
4898
4899 if (!DeleteExprsToAnalyze.empty())
4900 Stream.EmitRecord(DELETE_EXPRS_TO_ANALYZE, DeleteExprsToAnalyze);
4901
4902 // Write the visible updates to DeclContexts.
4903 for (auto *DC : UpdatedDeclContexts)
4904 WriteDeclContextVisibleUpdate(DC);
4905
4906 if (!WritingModule) {
4907 // Write the submodules that were imported, if any.
4908 struct ModuleInfo {
4909 uint64_t ID;
4910 Module *M;
4911 ModuleInfo(uint64_t ID, Module *M) : ID(ID), M(M) {}
4912 };
4913 llvm::SmallVector<ModuleInfo, 64> Imports;
4914 for (const auto *I : Context.local_imports()) {
4915 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()"
, "clang/lib/Serialization/ASTWriter.cpp", 4915, __extension__
__PRETTY_FUNCTION__))
;
4916 Imports.push_back(ModuleInfo(SubmoduleIDs[I->getImportedModule()],
4917 I->getImportedModule()));
4918 }
4919
4920 if (!Imports.empty()) {
4921 auto Cmp = [](const ModuleInfo &A, const ModuleInfo &B) {
4922 return A.ID < B.ID;
4923 };
4924 auto Eq = [](const ModuleInfo &A, const ModuleInfo &B) {
4925 return A.ID == B.ID;
4926 };
4927
4928 // Sort and deduplicate module IDs.
4929 llvm::sort(Imports, Cmp);
4930 Imports.erase(std::unique(Imports.begin(), Imports.end(), Eq),
4931 Imports.end());
4932
4933 RecordData ImportedModules;
4934 for (const auto &Import : Imports) {
4935 ImportedModules.push_back(Import.ID);
4936 // FIXME: If the module has macros imported then later has declarations
4937 // imported, this location won't be the right one as a location for the
4938 // declaration imports.
4939 AddSourceLocation(PP.getModuleImportLoc(Import.M), ImportedModules);
4940 }
4941
4942 Stream.EmitRecord(IMPORTED_MODULES, ImportedModules);
4943 }
4944 }
4945
4946 WriteObjCCategories();
4947 if(!WritingModule) {
4948 WriteOptimizePragmaOptions(SemaRef);
4949 WriteMSStructPragmaOptions(SemaRef);
4950 WriteMSPointersToMembersPragmaOptions(SemaRef);
4951 }
4952 WritePackPragmaOptions(SemaRef);
4953 WriteFloatControlPragmaOptions(SemaRef);
4954
4955 // Some simple statistics
4956 RecordData::value_type Record[] = {
4957 NumStatements, NumMacros, NumLexicalDeclContexts, NumVisibleDeclContexts};
4958 Stream.EmitRecord(STATISTICS, Record);
4959 Stream.ExitBlock();
4960 Stream.FlushToWord();
4961 ASTBlockRange.second = Stream.GetCurrentBitNo();
4962
4963 // Write the module file extension blocks.
4964 for (const auto &ExtWriter : ModuleFileExtensionWriters)
4965 WriteModuleFileExtension(SemaRef, *ExtWriter);
4966
4967 return writeUnhashedControlBlock(PP, Context);
4968}
4969
4970void ASTWriter::WriteDeclUpdatesBlocks(RecordDataImpl &OffsetsRecord) {
4971 if (DeclUpdates.empty())
4972 return;
4973
4974 DeclUpdateMap LocalUpdates;
4975 LocalUpdates.swap(DeclUpdates);
4976
4977 for (auto &DeclUpdate : LocalUpdates) {
4978 const Decl *D = DeclUpdate.first;
4979
4980 bool HasUpdatedBody = false;
4981 RecordData RecordData;
4982 ASTRecordWriter Record(*this, RecordData);
4983 for (auto &Update : DeclUpdate.second) {
4984 DeclUpdateKind Kind = (DeclUpdateKind)Update.getKind();
4985
4986 // An updated body is emitted last, so that the reader doesn't need
4987 // to skip over the lazy body to reach statements for other records.
4988 if (Kind == UPD_CXX_ADDED_FUNCTION_DEFINITION)
4989 HasUpdatedBody = true;
4990 else
4991 Record.push_back(Kind);
4992
4993 switch (Kind) {
4994 case UPD_CXX_ADDED_IMPLICIT_MEMBER:
4995 case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION:
4996 case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE:
4997 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?\""
, "clang/lib/Serialization/ASTWriter.cpp", 4997, __extension__
__PRETTY_FUNCTION__))
;
4998 Record.push_back(GetDeclRef(Update.getDecl()));
4999 break;
5000
5001 case UPD_CXX_ADDED_FUNCTION_DEFINITION:
5002 break;
5003
5004 case UPD_CXX_POINT_OF_INSTANTIATION:
5005 // FIXME: Do we need to also save the template specialization kind here?
5006 Record.AddSourceLocation(Update.getLoc());
5007 break;
5008
5009 case UPD_CXX_ADDED_VAR_DEFINITION: {
5010 const VarDecl *VD = cast<VarDecl>(D);
5011 Record.push_back(VD->isInline());
5012 Record.push_back(VD->isInlineSpecified());
5013 Record.AddVarDeclInit(VD);
5014 break;
5015 }
5016
5017 case UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT:
5018 Record.AddStmt(const_cast<Expr *>(
5019 cast<ParmVarDecl>(Update.getDecl())->getDefaultArg()));
5020 break;
5021
5022 case UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER:
5023 Record.AddStmt(
5024 cast<FieldDecl>(Update.getDecl())->getInClassInitializer());
5025 break;
5026
5027 case UPD_CXX_INSTANTIATED_CLASS_DEFINITION: {
5028 auto *RD = cast<CXXRecordDecl>(D);
5029 UpdatedDeclContexts.insert(RD->getPrimaryContext());
5030 Record.push_back(RD->isParamDestroyedInCallee());
5031 Record.push_back(RD->getArgPassingRestrictions());
5032 Record.AddCXXDefinitionData(RD);
5033 Record.AddOffset(WriteDeclContextLexicalBlock(
5034 *Context, const_cast<CXXRecordDecl *>(RD)));
5035
5036 // This state is sometimes updated by template instantiation, when we
5037 // switch from the specialization referring to the template declaration
5038 // to it referring to the template definition.
5039 if (auto *MSInfo = RD->getMemberSpecializationInfo()) {
5040 Record.push_back(MSInfo->getTemplateSpecializationKind());
5041 Record.AddSourceLocation(MSInfo->getPointOfInstantiation());
5042 } else {
5043 auto *Spec = cast<ClassTemplateSpecializationDecl>(RD);
5044 Record.push_back(Spec->getTemplateSpecializationKind());
5045 Record.AddSourceLocation(Spec->getPointOfInstantiation());
5046
5047 // The instantiation might have been resolved to a partial
5048 // specialization. If so, record which one.
5049 auto From = Spec->getInstantiatedFrom();
5050 if (auto PartialSpec =
5051 From.dyn_cast<ClassTemplatePartialSpecializationDecl*>()) {
5052 Record.push_back(true);
5053 Record.AddDeclRef(PartialSpec);
5054 Record.AddTemplateArgumentList(
5055 &Spec->getTemplateInstantiationArgs());
5056 } else {
5057 Record.push_back(false);
5058 }
5059 }
5060 Record.push_back(RD->getTagKind());
5061 Record.AddSourceLocation(RD->getLocation());
5062 Record.AddSourceLocation(RD->getBeginLoc());
5063 Record.AddSourceRange(RD->getBraceRange());
5064
5065 // Instantiation may change attributes; write them all out afresh.
5066 Record.push_back(D->hasAttrs());
5067 if (D->hasAttrs())
5068 Record.AddAttributes(D->getAttrs());
5069
5070 // FIXME: Ensure we don't get here for explicit instantiations.
5071 break;
5072 }
5073
5074 case UPD_CXX_RESOLVED_DTOR_DELETE:
5075 Record.AddDeclRef(Update.getDecl());
5076 Record.AddStmt(cast<CXXDestructorDecl>(D)->getOperatorDeleteThisArg());
5077 break;
5078
5079 case UPD_CXX_RESOLVED_EXCEPTION_SPEC: {
5080 auto prototype =
5081 cast<FunctionDecl>(D)->getType()->castAs<FunctionProtoType>();
5082 Record.writeExceptionSpecInfo(prototype->getExceptionSpecInfo());
5083 break;
5084 }
5085
5086 case UPD_CXX_DEDUCED_RETURN_TYPE:
5087 Record.push_back(GetOrCreateTypeID(Update.getType()));
5088 break;
5089
5090 case UPD_DECL_MARKED_USED:
5091 break;
5092
5093 case UPD_MANGLING_NUMBER:
5094 case UPD_STATIC_LOCAL_NUMBER:
5095 Record.push_back(Update.getNumber());
5096 break;
5097
5098 case UPD_DECL_MARKED_OPENMP_THREADPRIVATE:
5099 Record.AddSourceRange(
5100 D->getAttr<OMPThreadPrivateDeclAttr>()->getRange());
5101 break;
5102
5103 case UPD_DECL_MARKED_OPENMP_ALLOCATE: {
5104 auto *A = D->getAttr<OMPAllocateDeclAttr>();
5105 Record.push_back(A->getAllocatorType());
5106 Record.AddStmt(A->getAllocator());
5107 Record.AddStmt(A->getAlignment());
5108 Record.AddSourceRange(A->getRange());
5109 break;
5110 }
5111
5112 case UPD_DECL_MARKED_OPENMP_DECLARETARGET:
5113 Record.push_back(D->getAttr<OMPDeclareTargetDeclAttr>()->getMapType());
5114 Record.AddSourceRange(
5115 D->getAttr<OMPDeclareTargetDeclAttr>()->getRange());
5116 break;
5117
5118 case UPD_DECL_EXPORTED:
5119 Record.push_back(getSubmoduleID(Update.getModule()));
5120 break;
5121
5122 case UPD_ADDED_ATTR_TO_RECORD:
5123 Record.AddAttributes(llvm::makeArrayRef(Update.getAttr()));
5124 break;
5125 }
5126 }
5127
5128 if (HasUpdatedBody) {
5129 const auto *Def = cast<FunctionDecl>(D);
5130 Record.push_back(UPD_CXX_ADDED_FUNCTION_DEFINITION);
5131 Record.push_back(Def->isInlined());
5132 Record.AddSourceLocation(Def->getInnerLocStart());
5133 Record.AddFunctionDefinition(Def);
5134 }
5135
5136 OffsetsRecord.push_back(GetDeclRef(D));
5137 OffsetsRecord.push_back(Record.Emit(DECL_UPDATES));
5138 }
5139}
5140
5141void ASTWriter::AddAlignPackInfo(const Sema::AlignPackInfo &Info,
5142 RecordDataImpl &Record) {
5143 uint32_t Raw = Sema::AlignPackInfo::getRawEncoding(Info);
5144 Record.push_back(Raw);
5145}
5146
5147void ASTWriter::AddSourceLocation(SourceLocation Loc, RecordDataImpl &Record) {
5148 SourceLocation::UIntTy Raw = Loc.getRawEncoding();
5149 Record.push_back((Raw << 1) | (Raw >> (8 * sizeof(Raw) - 1)));
5150}
5151
5152void ASTWriter::AddSourceRange(SourceRange Range, RecordDataImpl &Record) {
5153 AddSourceLocation(Range.getBegin(), Record);
5154 AddSourceLocation(Range.getEnd(), Record);
5155}
5156
5157void ASTRecordWriter::AddAPFloat(const llvm::APFloat &Value) {
5158 AddAPInt(Value.bitcastToAPInt());
5159}
5160
5161void ASTWriter::AddIdentifierRef(const IdentifierInfo *II, RecordDataImpl &Record) {
5162 Record.push_back(getIdentifierRef(II));
5163}
5164
5165IdentID ASTWriter::getIdentifierRef(const IdentifierInfo *II) {
5166 if (!II)
5167 return 0;
5168
5169 IdentID &ID = IdentifierIDs[II];
5170 if (ID == 0)
5171 ID = NextIdentID++;
5172 return ID;
5173}
5174
5175MacroID ASTWriter::getMacroRef(MacroInfo *MI, const IdentifierInfo *Name) {
5176 // Don't emit builtin macros like __LINE__ to the AST file unless they
5177 // have been redefined by the header (in which case they are not
5178 // isBuiltinMacro).
5179 if (!MI || MI->isBuiltinMacro())
5180 return 0;
5181
5182 MacroID &ID = MacroIDs[MI];
5183 if (ID == 0) {
5184 ID = NextMacroID++;
5185 MacroInfoToEmitData Info = { Name, MI, ID };
5186 MacroInfosToEmit.push_back(Info);
5187 }
5188 return ID;
5189}
5190
5191MacroID ASTWriter::getMacroID(MacroInfo *MI) {
5192 if (!MI || MI->isBuiltinMacro())
5193 return 0;
5194
5195 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!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5195, __extension__
__PRETTY_FUNCTION__))
;
5196 return MacroIDs[MI];
5197}
5198
5199uint32_t ASTWriter::getMacroDirectivesOffset(const IdentifierInfo *Name) {
5200 return IdentMacroDirectivesOffsetMap.lookup(Name);
5201}
5202
5203void ASTRecordWriter::AddSelectorRef(const Selector SelRef) {
5204 Record->push_back(Writer->getSelectorRef(SelRef));
5205}
5206
5207SelectorID ASTWriter::getSelectorRef(Selector Sel) {
5208 if (Sel.getAsOpaquePtr() == nullptr) {
5209 return 0;
5210 }
5211
5212 SelectorID SID = SelectorIDs[Sel];
5213 if (SID == 0 && Chain) {
5214 // This might trigger a ReadSelector callback, which will set the ID for
5215 // this selector.
5216 Chain->LoadSelector(Sel);
5217 SID = SelectorIDs[Sel];
5218 }
5219 if (SID == 0) {
5220 SID = NextSelectorID++;
5221 SelectorIDs[Sel] = SID;
5222 }
5223 return SID;
5224}
5225
5226void ASTRecordWriter::AddCXXTemporary(const CXXTemporary *Temp) {
5227 AddDeclRef(Temp->getDestructor());
5228}
5229
5230void ASTRecordWriter::AddTemplateArgumentLocInfo(
5231 TemplateArgument::ArgKind Kind, const TemplateArgumentLocInfo &Arg) {
5232 switch (Kind) {
5233 case TemplateArgument::Expression:
5234 AddStmt(Arg.getAsExpr());
5235 break;
5236 case TemplateArgument::Type:
5237 AddTypeSourceInfo(Arg.getAsTypeSourceInfo());
5238 break;
5239 case TemplateArgument::Template:
5240 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5241 AddSourceLocation(Arg.getTemplateNameLoc());
5242 break;
5243 case TemplateArgument::TemplateExpansion:
5244 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5245 AddSourceLocation(Arg.getTemplateNameLoc());
5246 AddSourceLocation(Arg.getTemplateEllipsisLoc());
5247 break;
5248 case TemplateArgument::Null:
5249 case TemplateArgument::Integral:
5250 case TemplateArgument::Declaration:
5251 case TemplateArgument::NullPtr:
5252 case TemplateArgument::Pack:
5253 // FIXME: Is this right?
5254 break;
5255 }
5256}
5257
5258void ASTRecordWriter::AddTemplateArgumentLoc(const TemplateArgumentLoc &Arg) {
5259 AddTemplateArgument(Arg.getArgument());
5260
5261 if (Arg.getArgument().getKind() == TemplateArgument::Expression) {
5262 bool InfoHasSameExpr
5263 = Arg.getArgument().getAsExpr() == Arg.getLocInfo().getAsExpr();
5264 Record->push_back(InfoHasSameExpr);
5265 if (InfoHasSameExpr)
5266 return; // Avoid storing the same expr twice.
5267 }
5268 AddTemplateArgumentLocInfo(Arg.getArgument().getKind(), Arg.getLocInfo());
5269}
5270
5271void ASTRecordWriter::AddTypeSourceInfo(TypeSourceInfo *TInfo) {
5272 if (!TInfo) {
5273 AddTypeRef(QualType());
5274 return;
5275 }
5276
5277 AddTypeRef(TInfo->getType());
5278 AddTypeLoc(TInfo->getTypeLoc());
5279}
5280
5281void ASTRecordWriter::AddTypeLoc(TypeLoc TL) {
5282 TypeLocWriter TLW(*this);
5283 for (; !TL.isNull(); TL = TL.getNextTypeLoc())
5284 TLW.Visit(TL);
5285}
5286
5287void ASTWriter::AddTypeRef(QualType T, RecordDataImpl &Record) {
5288 Record.push_back(GetOrCreateTypeID(T));
5289}
5290
5291TypeID ASTWriter::GetOrCreateTypeID(QualType T) {
5292 assert(Context)(static_cast <bool> (Context) ? void (0) : __assert_fail
("Context", "clang/lib/Serialization/ASTWriter.cpp", 5292, __extension__
__PRETTY_FUNCTION__))
;
5293 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5294 if (T.isNull())
5295 return TypeIdx();
5296 assert(!T.getLocalFastQualifiers())(static_cast <bool> (!T.getLocalFastQualifiers()) ? void
(0) : __assert_fail ("!T.getLocalFastQualifiers()", "clang/lib/Serialization/ASTWriter.cpp"
, 5296, __extension__ __PRETTY_FUNCTION__))
;
5297
5298 TypeIdx &Idx = TypeIdxs[T];
5299 if (Idx.getIndex() == 0) {
5300 if (DoneWritingDeclsAndTypes) {
5301 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!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5301, __extension__
__PRETTY_FUNCTION__))
;
5302 return TypeIdx();
5303 }
5304
5305 // We haven't seen this type before. Assign it a new ID and put it
5306 // into the queue of types to emit.
5307 Idx = TypeIdx(NextTypeID++);
5308 DeclTypesToEmit.push(T);
5309 }
5310 return Idx;
5311 });
5312}
5313
5314TypeID ASTWriter::getTypeID(QualType T) const {
5315 assert(Context)(static_cast <bool> (Context) ? void (0) : __assert_fail
("Context", "clang/lib/Serialization/ASTWriter.cpp", 5315, __extension__
__PRETTY_FUNCTION__))
;
5316 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5317 if (T.isNull())
5318 return TypeIdx();
5319 assert(!T.getLocalFastQualifiers())(static_cast <bool> (!T.getLocalFastQualifiers()) ? void
(0) : __assert_fail ("!T.getLocalFastQualifiers()", "clang/lib/Serialization/ASTWriter.cpp"
, 5319, __extension__ __PRETTY_FUNCTION__))
;
5320
5321 TypeIdxMap::const_iterator I = TypeIdxs.find(T);
5322 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!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5322, __extension__
__PRETTY_FUNCTION__))
;
5323 return I->second;
5324 });
5325}
5326
5327void ASTWriter::AddDeclRef(const Decl *D, RecordDataImpl &Record) {
5328 Record.push_back(GetDeclRef(D));
5329}
5330
5331DeclID ASTWriter::GetDeclRef(const Decl *D) {
5332 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 5332, __extension__
__PRETTY_FUNCTION__))
;
5333
5334 if (!D) {
5335 return 0;
5336 }
5337
5338 // If D comes from an AST file, its declaration ID is already known and
5339 // fixed.
5340 if (D->isFromASTFile())
5341 return D->getGlobalID();
5342
5343 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 5343, __extension__
__PRETTY_FUNCTION__))
;
5344 DeclID &ID = DeclIDs[D];
5345 if (ID == 0) {
5346 if (DoneWritingDeclsAndTypes) {
5347 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!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5347, __extension__
__PRETTY_FUNCTION__))
;
5348 return 0;
5349 }
5350
5351 // We haven't seen this declaration before. Give it a new ID and
5352 // enqueue it in the list of declarations to emit.
5353 ID = NextDeclID++;
5354 DeclTypesToEmit.push(const_cast<Decl *>(D));
5355 }
5356
5357 return ID;
5358}
5359
5360DeclID ASTWriter::getDeclID(const Decl *D) {
5361 if (!D)
5362 return 0;
5363
5364 // If D comes from an AST file, its declaration ID is already known and
5365 // fixed.
5366 if (D->isFromASTFile())
5367 return D->getGlobalID();
5368
5369 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!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5369, __extension__
__PRETTY_FUNCTION__))
;
5370 return DeclIDs[D];
5371}
5372
5373void ASTWriter::associateDeclWithFile(const Decl *D, DeclID ID) {
5374 assert(ID)(static_cast <bool> (ID) ? void (0) : __assert_fail ("ID"
, "clang/lib/Serialization/ASTWriter.cpp", 5374, __extension__
__PRETTY_FUNCTION__))
;
5375 assert(D)(static_cast <bool> (D) ? void (0) : __assert_fail ("D"
, "clang/lib/Serialization/ASTWriter.cpp", 5375, __extension__
__PRETTY_FUNCTION__))
;
5376
5377 SourceLocation Loc = D->getLocation();
5378 if (Loc.isInvalid())
5379 return;
5380
5381 // We only keep track of the file-level declarations of each file.
5382 if (!D->getLexicalDeclContext()->isFileContext())
5383 return;
5384 // FIXME: ParmVarDecls that are part of a function type of a parameter of
5385 // a function/objc method, should not have TU as lexical context.
5386 // TemplateTemplateParmDecls that are part of an alias template, should not
5387 // have TU as lexical context.
5388 if (isa<ParmVarDecl>(D) || isa<TemplateTemplateParmDecl>(D))
5389 return;
5390
5391 SourceManager &SM = Context->getSourceManager();
5392 SourceLocation FileLoc = SM.getFileLoc(Loc);
5393 assert(SM.isLocalSourceLocation(FileLoc))(static_cast <bool> (SM.isLocalSourceLocation(FileLoc))
? void (0) : __assert_fail ("SM.isLocalSourceLocation(FileLoc)"
, "clang/lib/Serialization/ASTWriter.cpp", 5393, __extension__
__PRETTY_FUNCTION__))
;
5394 FileID FID;
5395 unsigned Offset;
5396 std::tie(FID, Offset) = SM.getDecomposedLoc(FileLoc);
5397 if (FID.isInvalid())
5398 return;
5399 assert(SM.getSLocEntry(FID).isFile())(static_cast <bool> (SM.getSLocEntry(FID).isFile()) ? void
(0) : __assert_fail ("SM.getSLocEntry(FID).isFile()", "clang/lib/Serialization/ASTWriter.cpp"
, 5399, __extension__ __PRETTY_FUNCTION__))
;
5400
5401 std::unique_ptr<DeclIDInFileInfo> &Info = FileDeclIDs[FID];
5402 if (!Info)
5403 Info = std::make_unique<DeclIDInFileInfo>();
5404
5405 std::pair<unsigned, serialization::DeclID> LocDecl(Offset, ID);
5406 LocDeclIDsTy &Decls = Info->DeclIDs;
5407
5408 if (Decls.empty() || Decls.back().first <= Offset) {
5409 Decls.push_back(LocDecl);
5410 return;
5411 }
5412
5413 LocDeclIDsTy::iterator I =
5414 llvm::upper_bound(Decls, LocDecl, llvm::less_first());
5415
5416 Decls.insert(I, LocDecl);
5417}
5418
5419unsigned ASTWriter::getAnonymousDeclarationNumber(const NamedDecl *D) {
5420 assert(needsAnonymousDeclarationNumber(D) &&(static_cast <bool> (needsAnonymousDeclarationNumber(D)
&& "expected an anonymous declaration") ? void (0) :
__assert_fail ("needsAnonymousDeclarationNumber(D) && \"expected an anonymous declaration\""
, "clang/lib/Serialization/ASTWriter.cpp", 5421, __extension__
__PRETTY_FUNCTION__))
5421 "expected an anonymous declaration")(static_cast <bool> (needsAnonymousDeclarationNumber(D)
&& "expected an anonymous declaration") ? void (0) :
__assert_fail ("needsAnonymousDeclarationNumber(D) && \"expected an anonymous declaration\""
, "clang/lib/Serialization/ASTWriter.cpp", 5421, __extension__
__PRETTY_FUNCTION__))
;
5422
5423 // Number the anonymous declarations within this context, if we've not
5424 // already done so.
5425 auto It = AnonymousDeclarationNumbers.find(D);
5426 if (It == AnonymousDeclarationNumbers.end()) {
5427 auto *DC = D->getLexicalDeclContext();
5428 numberAnonymousDeclsWithin(DC, [&](const NamedDecl *ND, unsigned Number) {
5429 AnonymousDeclarationNumbers[ND] = Number;
5430 });
5431
5432 It = AnonymousDeclarationNumbers.find(D);
5433 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 5434, __extension__
__PRETTY_FUNCTION__))
5434 "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\""
, "clang/lib/Serialization/ASTWriter.cpp", 5434, __extension__
__PRETTY_FUNCTION__))
;
5435 }
5436
5437 return It->second;
5438}
5439
5440void ASTRecordWriter::AddDeclarationNameLoc(const DeclarationNameLoc &DNLoc,
5441 DeclarationName Name) {
5442 switch (Name.getNameKind()) {
5443 case DeclarationName::CXXConstructorName:
5444 case DeclarationName::CXXDestructorName:
5445 case DeclarationName::CXXConversionFunctionName:
5446 AddTypeSourceInfo(DNLoc.getNamedTypeInfo());
5447 break;
5448
5449 case DeclarationName::CXXOperatorName:
5450 AddSourceRange(DNLoc.getCXXOperatorNameRange());
5451 break;
5452
5453 case DeclarationName::CXXLiteralOperatorName:
5454 AddSourceLocation(DNLoc.getCXXLiteralOperatorNameLoc());
5455 break;
5456
5457 case DeclarationName::Identifier:
5458 case DeclarationName::ObjCZeroArgSelector:
5459 case DeclarationName::ObjCOneArgSelector:
5460 case DeclarationName::ObjCMultiArgSelector:
5461 case DeclarationName::CXXUsingDirective:
5462 case DeclarationName::CXXDeductionGuideName:
5463 break;
5464 }
5465}
5466
5467void ASTRecordWriter::AddDeclarationNameInfo(
5468 const DeclarationNameInfo &NameInfo) {
5469 AddDeclarationName(NameInfo.getName());
5470 AddSourceLocation(NameInfo.getLoc());
5471 AddDeclarationNameLoc(NameInfo.getInfo(), NameInfo.getName());
5472}
5473
5474void ASTRecordWriter::AddQualifierInfo(const QualifierInfo &Info) {
5475 AddNestedNameSpecifierLoc(Info.QualifierLoc);
5476 Record->push_back(Info.NumTemplParamLists);
5477 for (unsigned i = 0, e = Info.NumTemplParamLists; i != e; ++i)
5478 AddTemplateParameterList(Info.TemplParamLists[i]);
5479}
5480
5481void ASTRecordWriter::AddNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS) {
5482 // Nested name specifiers usually aren't too long. I think that 8 would
5483 // typically accommodate the vast majority.
5484 SmallVector<NestedNameSpecifierLoc , 8> NestedNames;
5485
5486 // Push each of the nested-name-specifiers's onto a stack for
5487 // serialization in reverse order.
5488 while (NNS) {
5489 NestedNames.push_back(NNS);
5490 NNS = NNS.getPrefix();
5491 }
5492
5493 Record->push_back(NestedNames.size());
5494 while(!NestedNames.empty()) {
5495 NNS = NestedNames.pop_back_val();
5496 NestedNameSpecifier::SpecifierKind Kind
5497 = NNS.getNestedNameSpecifier()->getKind();
5498 Record->push_back(Kind);
5499 switch (Kind) {
5500 case NestedNameSpecifier::Identifier:
5501 AddIdentifierRef(NNS.getNestedNameSpecifier()->getAsIdentifier());
5502 AddSourceRange(NNS.getLocalSourceRange());
5503 break;
5504
5505 case NestedNameSpecifier::Namespace:
5506 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespace());
5507 AddSourceRange(NNS.getLocalSourceRange());
5508 break;
5509
5510 case NestedNameSpecifier::NamespaceAlias:
5511 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespaceAlias());
5512 AddSourceRange(NNS.getLocalSourceRange());
5513 break;
5514
5515 case NestedNameSpecifier::TypeSpec:
5516 case NestedNameSpecifier::TypeSpecWithTemplate:
5517 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5518 AddTypeRef(NNS.getTypeLoc().getType());
5519 AddTypeLoc(NNS.getTypeLoc());
5520 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5521 break;
5522
5523 case NestedNameSpecifier::Global:
5524 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5525 break;
5526
5527 case NestedNameSpecifier::Super:
5528 AddDeclRef(NNS.getNestedNameSpecifier()->getAsRecordDecl());
5529 AddSourceRange(NNS.getLocalSourceRange());
5530 break;
5531 }
5532 }
5533}
5534
5535void ASTRecordWriter::AddTemplateParameterList(
5536 const TemplateParameterList *TemplateParams) {
5537 assert(TemplateParams && "No TemplateParams!")(static_cast <bool> (TemplateParams && "No TemplateParams!"
) ? void (0) : __assert_fail ("TemplateParams && \"No TemplateParams!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5537, __extension__
__PRETTY_FUNCTION__))
;
5538 AddSourceLocation(TemplateParams->getTemplateLoc());
5539 AddSourceLocation(TemplateParams->getLAngleLoc());
5540 AddSourceLocation(TemplateParams->getRAngleLoc());
5541
5542 Record->push_back(TemplateParams->size());
5543 for (const auto &P : *TemplateParams)
5544 AddDeclRef(P);
5545 if (const Expr *RequiresClause = TemplateParams->getRequiresClause()) {
5546 Record->push_back(true);
5547 AddStmt(const_cast<Expr*>(RequiresClause));
5548 } else {
5549 Record->push_back(false);
5550 }
5551}
5552
5553/// Emit a template argument list.
5554void ASTRecordWriter::AddTemplateArgumentList(
5555 const TemplateArgumentList *TemplateArgs) {
5556 assert(TemplateArgs && "No TemplateArgs!")(static_cast <bool> (TemplateArgs && "No TemplateArgs!"
) ? void (0) : __assert_fail ("TemplateArgs && \"No TemplateArgs!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5556, __extension__
__PRETTY_FUNCTION__))
;
5557 Record->push_back(TemplateArgs->size());
5558 for (int i = 0, e = TemplateArgs->size(); i != e; ++i)
5559 AddTemplateArgument(TemplateArgs->get(i));
5560}
5561
5562void ASTRecordWriter::AddASTTemplateArgumentListInfo(
5563 const ASTTemplateArgumentListInfo *ASTTemplArgList) {
5564 assert(ASTTemplArgList && "No ASTTemplArgList!")(static_cast <bool> (ASTTemplArgList && "No ASTTemplArgList!"
) ? void (0) : __assert_fail ("ASTTemplArgList && \"No ASTTemplArgList!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5564, __extension__
__PRETTY_FUNCTION__))
;
5565 AddSourceLocation(ASTTemplArgList->LAngleLoc);
5566 AddSourceLocation(ASTTemplArgList->RAngleLoc);
5567 Record->push_back(ASTTemplArgList->NumTemplateArgs);
5568 const TemplateArgumentLoc *TemplArgs = ASTTemplArgList->getTemplateArgs();
5569 for (int i = 0, e = ASTTemplArgList->NumTemplateArgs; i != e; ++i)
5570 AddTemplateArgumentLoc(TemplArgs[i]);
5571}
5572
5573void ASTRecordWriter::AddUnresolvedSet(const ASTUnresolvedSet &Set) {
5574 Record->push_back(Set.size());
5575 for (ASTUnresolvedSet::const_iterator
5576 I = Set.begin(), E = Set.end(); I != E; ++I) {
5577 AddDeclRef(I.getDecl());
5578 Record->push_back(I.getAccess());
5579 }
5580}
5581
5582// FIXME: Move this out of the main ASTRecordWriter interface.
5583void ASTRecordWriter::AddCXXBaseSpecifier(const CXXBaseSpecifier &Base) {
5584 Record->push_back(Base.isVirtual());
5585 Record->push_back(Base.isBaseOfClass());
5586 Record->push_back(Base.getAccessSpecifierAsWritten());
5587 Record->push_back(Base.getInheritConstructors());
5588 AddTypeSourceInfo(Base.getTypeSourceInfo());
5589 AddSourceRange(Base.getSourceRange());
5590 AddSourceLocation(Base.isPackExpansion()? Base.getEllipsisLoc()
5591 : SourceLocation());
5592}
5593
5594static uint64_t EmitCXXBaseSpecifiers(ASTWriter &W,
5595 ArrayRef<CXXBaseSpecifier> Bases) {
5596 ASTWriter::RecordData Record;
5597 ASTRecordWriter Writer(W, Record);
5598 Writer.push_back(Bases.size());
5599
5600 for (auto &Base : Bases)
5601 Writer.AddCXXBaseSpecifier(Base);
5602
5603 return Writer.Emit(serialization::DECL_CXX_BASE_SPECIFIERS);
5604}
5605
5606// FIXME: Move this out of the main ASTRecordWriter interface.
5607void ASTRecordWriter::AddCXXBaseSpecifiers(ArrayRef<CXXBaseSpecifier> Bases) {
5608 AddOffset(EmitCXXBaseSpecifiers(*Writer, Bases));
5609}
5610
5611static uint64_t
5612EmitCXXCtorInitializers(ASTWriter &W,
5613 ArrayRef<CXXCtorInitializer *> CtorInits) {
5614 ASTWriter::RecordData Record;
5615 ASTRecordWriter Writer(W, Record);
5616 Writer.push_back(CtorInits.size());
5617
5618 for (auto *Init : CtorInits) {
5619 if (Init->isBaseInitializer()) {
5620 Writer.push_back(CTOR_INITIALIZER_BASE);
5621 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5622 Writer.push_back(Init->isBaseVirtual());
5623 } else if (Init->isDelegatingInitializer()) {
5624 Writer.push_back(CTOR_INITIALIZER_DELEGATING);
5625 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5626 } else if (Init->isMemberInitializer()){
5627 Writer.push_back(CTOR_INITIALIZER_MEMBER);
5628 Writer.AddDeclRef(Init->getMember());
5629 } else {
5630 Writer.push_back(CTOR_INITIALIZER_INDIRECT_MEMBER);
5631 Writer.AddDeclRef(Init->getIndirectMember());
5632 }
5633
5634 Writer.AddSourceLocation(Init->getMemberLocation());
5635 Writer.AddStmt(Init->getInit());
5636 Writer.AddSourceLocation(Init->getLParenLoc());
5637 Writer.AddSourceLocation(Init->getRParenLoc());
5638 Writer.push_back(Init->isWritten());
5639 if (Init->isWritten())
5640 Writer.push_back(Init->getSourceOrder());
5641 }
5642
5643 return Writer.Emit(serialization::DECL_CXX_CTOR_INITIALIZERS);
5644}
5645
5646// FIXME: Move this out of the main ASTRecordWriter interface.
5647void ASTRecordWriter::AddCXXCtorInitializers(
5648 ArrayRef<CXXCtorInitializer *> CtorInits) {
5649 AddOffset(EmitCXXCtorInitializers(*Writer, CtorInits));
5650}
5651
5652void ASTRecordWriter::AddCXXDefinitionData(const CXXRecordDecl *D) {
5653 auto &Data = D->data();
5654 Record->push_back(Data.IsLambda);
5655
5656 #define FIELD(Name, Width, Merge) \
5657 Record->push_back(Data.Name);
5658 #include "clang/AST/CXXRecordDeclDefinitionBits.def"
5659
5660 // getODRHash will compute the ODRHash if it has not been previously computed.
5661 Record->push_back(D->getODRHash());
5662 bool ModulesDebugInfo =
5663 Writer->Context->getLangOpts().ModulesDebugInfo && !D->isDependentType();
5664 Record->push_back(ModulesDebugInfo);
5665 if (ModulesDebugInfo)
5666 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(D));
5667
5668 // IsLambda bit is already saved.
5669
5670 Record->push_back(Data.NumBases);
5671 if (Data.NumBases > 0)
5672 AddCXXBaseSpecifiers(Data.bases());
5673
5674 // FIXME: Make VBases lazily computed when needed to avoid storing them.
5675 Record->push_back(Data.NumVBases);
5676 if (Data.NumVBases > 0)
5677 AddCXXBaseSpecifiers(Data.vbases());
5678
5679 AddUnresolvedSet(Data.Conversions.get(*Writer->Context));
5680 Record->push_back(Data.ComputedVisibleConversions);
5681 if (Data.ComputedVisibleConversions)
5682 AddUnresolvedSet(Data.VisibleConversions.get(*Writer->Context));
5683 // Data.Definition is the owning decl, no need to write it.
5684 AddDeclRef(D->getFirstFriend());
5685
5686 // Add lambda-specific data.
5687 if (Data.IsLambda) {
5688 auto &Lambda = D->getLambdaData();
5689 Record->push_back(Lambda.Dependent);
5690 Record->push_back(Lambda.IsGenericLambda);
5691 Record->push_back(Lambda.CaptureDefault);
5692 Record->push_back(Lambda.NumCaptures);
5693 Record->push_back(Lambda.NumExplicitCaptures);
5694 Record->push_back(Lambda.HasKnownInternalLinkage);
5695 Record->push_back(Lambda.ManglingNumber);
5696 Record->push_back(D->getDeviceLambdaManglingNumber());
5697 AddDeclRef(D->getLambdaContextDecl());
5698 AddTypeSourceInfo(Lambda.MethodTyInfo);
5699 for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
5700 const LambdaCapture &Capture = Lambda.Captures[I];
5701 AddSourceLocation(Capture.getLocation());
5702 Record->push_back(Capture.isImplicit());
5703 Record->push_back(Capture.getCaptureKind());
5704 switch (Capture.getCaptureKind()) {
5705 case LCK_StarThis:
5706 case LCK_This:
5707 case LCK_VLAType:
5708 break;
5709 case LCK_ByCopy:
5710 case LCK_ByRef:
5711 VarDecl *Var =
5712 Capture.capturesVariable() ? Capture.getCapturedVar() : nullptr;
5713 AddDeclRef(Var);
5714 AddSourceLocation(Capture.isPackExpansion() ? Capture.getEllipsisLoc()
5715 : SourceLocation());
5716 break;
5717 }
5718 }
5719 }
5720}
5721
5722void ASTRecordWriter::AddVarDeclInit(const VarDecl *VD) {
5723 const Expr *Init = VD->getInit();
5724 if (!Init) {
5725 push_back(0);
5726 return;
5727 }
5728
5729 unsigned Val = 1;
5730 if (EvaluatedStmt *ES = VD->getEvaluatedStmt()) {
5731 Val |= (ES->HasConstantInitialization ? 2 : 0);
5732 Val |= (ES->HasConstantDestruction ? 4 : 0);
5733 // FIXME: Also emit the constant initializer value.
5734 }
5735 push_back(Val);
5736 writeStmtRef(Init);
5737}
5738
5739void ASTWriter::ReaderInitialized(ASTReader *Reader) {
5740 assert(Reader && "Cannot remove chain")(static_cast <bool> (Reader && "Cannot remove chain"
) ? void (0) : __assert_fail ("Reader && \"Cannot remove chain\""
, "clang/lib/Serialization/ASTWriter.cpp", 5740, __extension__
__PRETTY_FUNCTION__))
;
5741 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 5741, __extension__
__PRETTY_FUNCTION__))
;
5742 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.\""
, "clang/lib/Serialization/ASTWriter.cpp", 5748, __extension__
__PRETTY_FUNCTION__))
5743 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.\""
, "clang/lib/Serialization/ASTWriter.cpp", 5748, __extension__
__PRETTY_FUNCTION__))
5744 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.\""
, "clang/lib/Serialization/ASTWriter.cpp", 5748, __extension__
__PRETTY_FUNCTION__))
5745 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.\""
, "clang/lib/Serialization/ASTWriter.cpp", 5748, __extension__
__PRETTY_FUNCTION__))
5746 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.\""
, "clang/lib/Serialization/ASTWriter.cpp", 5748, __extension__
__PRETTY_FUNCTION__))
5747 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.\""
, "clang/lib/Serialization/ASTWriter.cpp", 5748, __extension__
__PRETTY_FUNCTION__))
5748 "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.\""
, "clang/lib/Serialization/ASTWriter.cpp", 5748, __extension__
__PRETTY_FUNCTION__))
;
5749
5750 Chain = Reader;
5751
5752 // Note, this will get called multiple times, once one the reader starts up
5753 // and again each time it's done reading a PCH or module.
5754 FirstDeclID = NUM_PREDEF_DECL_IDS + Chain->getTotalNumDecls();
5755 FirstTypeID = NUM_PREDEF_TYPE_IDS + Chain->getTotalNumTypes();
5756 FirstIdentID = NUM_PREDEF_IDENT_IDS + Chain->getTotalNumIdentifiers();
5757 FirstMacroID = NUM_PREDEF_MACRO_IDS + Chain->getTotalNumMacros();
5758 FirstSubmoduleID = NUM_PREDEF_SUBMODULE_IDS + Chain->getTotalNumSubmodules();
5759 FirstSelectorID = NUM_PREDEF_SELECTOR_IDS + Chain->getTotalNumSelectors();
5760 NextDeclID = FirstDeclID;
5761 NextTypeID = FirstTypeID;
5762 NextIdentID = FirstIdentID;
5763 NextMacroID = FirstMacroID;
5764 NextSelectorID = FirstSelectorID;
5765 NextSubmoduleID = FirstSubmoduleID;
5766}
5767
5768void ASTWriter::IdentifierRead(IdentID ID, IdentifierInfo *II) {
5769 // Always keep the highest ID. See \p TypeRead() for more information.
5770 IdentID &StoredID = IdentifierIDs[II];
5771 if (ID > StoredID)
5772 StoredID = ID;
5773}
5774
5775void ASTWriter::MacroRead(serialization::MacroID ID, MacroInfo *MI) {
5776 // Always keep the highest ID. See \p TypeRead() for more information.
5777 MacroID &StoredID = MacroIDs[MI];
5778 if (ID > StoredID)
5779 StoredID = ID;
5780}
5781
5782void ASTWriter::TypeRead(TypeIdx Idx, QualType T) {
5783 // Always take the highest-numbered type index. This copes with an interesting
5784 // case for chained AST writing where we schedule writing the type and then,
5785 // later, deserialize the type from another AST. In this case, we want to
5786 // keep the higher-numbered entry so that we can properly write it out to
5787 // the AST file.
5788 TypeIdx &StoredIdx = TypeIdxs[T];
5789 if (Idx.getIndex() >= StoredIdx.getIndex())
5790 StoredIdx = Idx;
5791}
5792
5793void ASTWriter::SelectorRead(SelectorID ID, Selector S) {
5794 // Always keep the highest ID. See \p TypeRead() for more information.
5795 SelectorID &StoredID = SelectorIDs[S];
5796 if (ID > StoredID)
5797 StoredID = ID;
5798}
5799
5800void ASTWriter::MacroDefinitionRead(serialization::PreprocessedEntityID ID,
5801 MacroDefinitionRecord *MD) {
5802 assert(MacroDefinitions.find(MD) == MacroDefinitions.end())(static_cast <bool> (MacroDefinitions.find(MD) == MacroDefinitions
.end()) ? void (0) : __assert_fail ("MacroDefinitions.find(MD) == MacroDefinitions.end()"
, "clang/lib/Serialization/ASTWriter.cpp", 5802, __extension__
__PRETTY_FUNCTION__))
;
5803 MacroDefinitions[MD] = ID;
5804}
5805
5806void ASTWriter::ModuleRead(serialization::SubmoduleID ID, Module *Mod) {
5807 assert(SubmoduleIDs.find(Mod) == SubmoduleIDs.end())(static_cast <bool> (SubmoduleIDs.find(Mod) == SubmoduleIDs
.end()) ? void (0) : __assert_fail ("SubmoduleIDs.find(Mod) == SubmoduleIDs.end()"
, "clang/lib/Serialization/ASTWriter.cpp", 5807, __extension__
__PRETTY_FUNCTION__))
;
5808 SubmoduleIDs[Mod] = ID;
5809}
5810
5811void ASTWriter::CompletedTagDefinition(const TagDecl *D) {
5812 if (Chain && Chain->isProcessingUpdateRecords()) return;
5813 assert(D->isCompleteDefinition())(static_cast <bool> (D->isCompleteDefinition()) ? void
(0) : __assert_fail ("D->isCompleteDefinition()", "clang/lib/Serialization/ASTWriter.cpp"
, 5813, __extension__ __PRETTY_FUNCTION__))
;
5814 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5814, __extension__
__PRETTY_FUNCTION__))
;
5815 if (auto *RD = dyn_cast<CXXRecordDecl>(D)) {
5816 // We are interested when a PCH decl is modified.
5817 if (RD->isFromASTFile()) {
5818 // A forward reference was mutated into a definition. Rewrite it.
5819 // FIXME: This happens during template instantiation, should we
5820 // have created a new definition decl instead ?
5821 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?\""
, "clang/lib/Serialization/ASTWriter.cpp", 5822, __extension__
__PRETTY_FUNCTION__))
5822 "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?\""
, "clang/lib/Serialization/ASTWriter.cpp", 5822, __extension__
__PRETTY_FUNCTION__))
;
5823 DeclUpdates[RD].push_back(
5824 DeclUpdate(UPD_CXX_INSTANTIATED_CLASS_DEFINITION));
5825 }
5826 }
5827}
5828
5829static bool isImportedDeclContext(ASTReader *Chain, const Decl *D) {
5830 if (D->isFromASTFile())
5831 return true;
5832
5833 // The predefined __va_list_tag struct is imported if we imported any decls.
5834 // FIXME: This is a gross hack.
5835 return D == D->getASTContext().getVaListTagDecl();
5836}
5837
5838void ASTWriter::AddedVisibleDecl(const DeclContext *DC, const Decl *D) {
5839 if (Chain && Chain->isProcessingUpdateRecords()) return;
5840 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!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5841, __extension__
__PRETTY_FUNCTION__))
5841 "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!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5841, __extension__
__PRETTY_FUNCTION__))
;
5842
5843 // TU is handled elsewhere.
5844 if (isa<TranslationUnitDecl>(DC))
5845 return;
5846
5847 // Namespaces are handled elsewhere, except for template instantiations of
5848 // FunctionTemplateDecls in namespaces. We are interested in cases where the
5849 // local instantiations are added to an imported context. Only happens when
5850 // adding ADL lookup candidates, for example templated friends.
5851 if (isa<NamespaceDecl>(DC) && D->getFriendObjectKind() == Decl::FOK_None &&
5852 !isa<FunctionTemplateDecl>(D))
5853 return;
5854
5855 // We're only interested in cases where a local declaration is added to an
5856 // imported context.
5857 if (D->isFromASTFile() || !isImportedDeclContext(Chain, cast<Decl>(DC)))
5858 return;
5859
5860 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 5860, __extension__
__PRETTY_FUNCTION__))
;
5861 assert(!getDefinitiveDeclContext(DC) && "DeclContext not definitive!")(static_cast <bool> (!getDefinitiveDeclContext(DC) &&
"DeclContext not definitive!") ? void (0) : __assert_fail ("!getDefinitiveDeclContext(DC) && \"DeclContext not definitive!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5861, __extension__
__PRETTY_FUNCTION__))
;
5862 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5862, __extension__
__PRETTY_FUNCTION__))
;
5863 if (UpdatedDeclContexts.insert(DC) && !cast<Decl>(DC)->isFromASTFile()) {
5864 // We're adding a visible declaration to a predefined decl context. Ensure
5865 // that we write out all of its lookup results so we don't get a nasty
5866 // surprise when we try to emit its lookup table.
5867 for (auto *Child : DC->decls())
5868 DeclsToEmitEvenIfUnreferenced.push_back(Child);
5869 }
5870 DeclsToEmitEvenIfUnreferenced.push_back(D);
5871}
5872
5873void ASTWriter::AddedCXXImplicitMember(const CXXRecordDecl *RD, const Decl *D) {
5874 if (Chain && Chain->isProcessingUpdateRecords()) return;
5875 assert(D->isImplicit())(static_cast <bool> (D->isImplicit()) ? void (0) : __assert_fail
("D->isImplicit()", "clang/lib/Serialization/ASTWriter.cpp"
, 5875, __extension__ __PRETTY_FUNCTION__))
;
5876
5877 // We're only interested in cases where a local declaration is added to an
5878 // imported context.
5879 if (D->isFromASTFile() || !isImportedDeclContext(Chain, RD))
5880 return;
5881
5882 if (!isa<CXXMethodDecl>(D))
5883 return;
5884
5885 // A decl coming from PCH was modified.
5886 assert(RD->isCompleteDefinition())(static_cast <bool> (RD->isCompleteDefinition()) ? void
(0) : __assert_fail ("RD->isCompleteDefinition()", "clang/lib/Serialization/ASTWriter.cpp"
, 5886, __extension__ __PRETTY_FUNCTION__))
;
5887 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5887, __extension__
__PRETTY_FUNCTION__))
;
5888 DeclUpdates[RD].push_back(DeclUpdate(UPD_CXX_ADDED_IMPLICIT_MEMBER, D));
5889}
5890
5891void ASTWriter::ResolvedExceptionSpec(const FunctionDecl *FD) {
5892 if (Chain && Chain->isProcessingUpdateRecords()) return;
5893 assert(!DoneWritingDeclsAndTypes && "Already done writing updates!")(static_cast <bool> (!DoneWritingDeclsAndTypes &&
"Already done writing updates!") ? void (0) : __assert_fail (
"!DoneWritingDeclsAndTypes && \"Already done writing updates!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5893, __extension__
__PRETTY_FUNCTION__))
;
5894 if (!Chain) return;
5895 Chain->forEachImportedKeyDecl(FD, [&](const Decl *D) {
5896 // If we don't already know the exception specification for this redecl
5897 // chain, add an update record for it.
5898 if (isUnresolvedExceptionSpec(cast<FunctionDecl>(D)
5899 ->getType()
5900 ->castAs<FunctionProtoType>()
5901 ->getExceptionSpecType()))
5902 DeclUpdates[D].push_back(UPD_CXX_RESOLVED_EXCEPTION_SPEC);
5903 });
5904}
5905
5906void ASTWriter::DeducedReturnType(const FunctionDecl *FD, QualType ReturnType) {
5907 if (Chain && Chain->isProcessingUpdateRecords()) return;
5908 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5908, __extension__
__PRETTY_FUNCTION__))
;
5909 if (!Chain) return;
5910 Chain->forEachImportedKeyDecl(FD, [&](const Decl *D) {
5911 DeclUpdates[D].push_back(
5912 DeclUpdate(UPD_CXX_DEDUCED_RETURN_TYPE, ReturnType));
5913 });
5914}
5915
5916void ASTWriter::ResolvedOperatorDelete(const CXXDestructorDecl *DD,
5917 const FunctionDecl *Delete,
5918 Expr *ThisArg) {
5919 if (Chain && Chain->isProcessingUpdateRecords()) return;
5920 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5920, __extension__
__PRETTY_FUNCTION__))
;
5921 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\""
, "clang/lib/Serialization/ASTWriter.cpp", 5921, __extension__
__PRETTY_FUNCTION__))
;
5922 if (!Chain) return;
5923 Chain->forEachImportedKeyDecl(DD, [&](const Decl *D) {
5924 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_RESOLVED_DTOR_DELETE, Delete));
5925 });
5926}
5927
5928void ASTWriter::CompletedImplicitDefinition(const FunctionDecl *D) {
5929 if (Chain && Chain->isProcessingUpdateRecords()) return;
5930 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5930, __extension__
__PRETTY_FUNCTION__))
;
5931 if (!D->isFromASTFile())
5932 return; // Declaration not imported from PCH.
5933
5934 // Implicit function decl from a PCH was defined.
5935 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_FUNCTION_DEFINITION));
5936}
5937
5938void ASTWriter::VariableDefinitionInstantiated(const VarDecl *D) {
5939 if (Chain && Chain->isProcessingUpdateRecords()) return;
5940 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5940, __extension__
__PRETTY_FUNCTION__))
;
5941 if (!D->isFromASTFile())
5942 return;
5943
5944 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_VAR_DEFINITION));
5945}
5946
5947void ASTWriter::FunctionDefinitionInstantiated(const FunctionDecl *D) {
5948 if (Chain && Chain->isProcessingUpdateRecords()) return;
5949 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5949, __extension__
__PRETTY_FUNCTION__))
;
5950 if (!D->isFromASTFile())
5951 return;
5952
5953 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_FUNCTION_DEFINITION));
5954}
5955
5956void ASTWriter::InstantiationRequested(const ValueDecl *D) {
5957 if (Chain && Chain->isProcessingUpdateRecords()) return;
5958 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5958, __extension__
__PRETTY_FUNCTION__))
;
5959 if (!D->isFromASTFile())
5960 return;
5961
5962 // Since the actual instantiation is delayed, this really means that we need
5963 // to update the instantiation location.
5964 SourceLocation POI;
5965 if (auto *VD = dyn_cast<VarDecl>(D))
5966 POI = VD->getPointOfInstantiation();
5967 else
5968 POI = cast<FunctionDecl>(D)->getPointOfInstantiation();
5969 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_POINT_OF_INSTANTIATION, POI));
5970}
5971
5972void ASTWriter::DefaultArgumentInstantiated(const ParmVarDecl *D) {
5973 if (Chain && Chain->isProcessingUpdateRecords()) return;
5974 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5974, __extension__
__PRETTY_FUNCTION__))
;
5975 if (!D->isFromASTFile())
5976 return;
5977
5978 DeclUpdates[D].push_back(
5979 DeclUpdate(UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT, D));
5980}
5981
5982void ASTWriter::DefaultMemberInitializerInstantiated(const FieldDecl *D) {
5983 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5983, __extension__
__PRETTY_FUNCTION__))
;
5984 if (!D->isFromASTFile())
5985 return;
5986
5987 DeclUpdates[D].push_back(
5988 DeclUpdate(UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER, D));
5989}
5990
5991void ASTWriter::AddedObjCCategoryToInterface(const ObjCCategoryDecl *CatD,
5992 const ObjCInterfaceDecl *IFD) {
5993 if (Chain && Chain->isProcessingUpdateRecords()) return;
5994 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5994, __extension__
__PRETTY_FUNCTION__))
;
5995 if (!IFD->isFromASTFile())
5996 return; // Declaration not imported from PCH.
5997
5998 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?\""
, "clang/lib/Serialization/ASTWriter.cpp", 5998, __extension__
__PRETTY_FUNCTION__))
;
5999 ObjCClassesWithCategories.insert(
6000 const_cast<ObjCInterfaceDecl *>(IFD->getDefinition()));
6001}
6002
6003void ASTWriter::DeclarationMarkedUsed(const Decl *D) {
6004 if (Chain && Chain->isProcessingUpdateRecords()) return;
6005 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "clang/lib/Serialization/ASTWriter.cpp", 6005, __extension__
__PRETTY_FUNCTION__))
;
6006
6007 // If there is *any* declaration of the entity that's not from an AST file,
6008 // we can skip writing the update record. We make sure that isUsed() triggers
6009 // completion of the redeclaration chain of the entity.
6010 for (auto Prev = D->getMostRecentDecl(); Prev; Prev = Prev->getPreviousDecl())
6011 if (IsLocalDecl(Prev))
6012 return;
6013
6014 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_MARKED_USED));
6015}
6016
6017void ASTWriter::DeclarationMarkedOpenMPThreadPrivate(const Decl *D) {
6018 if (Chain && Chain->isProcessingUpdateRecords()) return;
6019 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "clang/lib/Serialization/ASTWriter.cpp", 6019, __extension__
__PRETTY_FUNCTION__))
;
6020 if (!D->isFromASTFile())
6021 return;
6022
6023 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_MARKED_OPENMP_THREADPRIVATE));
6024}
6025
6026void ASTWriter::DeclarationMarkedOpenMPAllocate(const Decl *D, const Attr *A) {
6027 if (Chain && Chain->isProcessingUpdateRecords()) return;
6028 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "clang/lib/Serialization/ASTWriter.cpp", 6028, __extension__
__PRETTY_FUNCTION__))
;
6029 if (!D->isFromASTFile())
6030 return;
6031
6032 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_MARKED_OPENMP_ALLOCATE, A));
6033}
6034
6035void ASTWriter::DeclarationMarkedOpenMPDeclareTarget(const Decl *D,
6036 const Attr *Attr) {
6037 if (Chain && Chain->isProcessingUpdateRecords()) return;
6038 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "clang/lib/Serialization/ASTWriter.cpp", 6038, __extension__
__PRETTY_FUNCTION__))
;
6039 if (!D->isFromASTFile())
6040 return;
6041
6042 DeclUpdates[D].push_back(
6043 DeclUpdate(UPD_DECL_MARKED_OPENMP_DECLARETARGET, Attr));
6044}
6045
6046void ASTWriter::RedefinedHiddenDefinition(const NamedDecl *D, Module *M) {
6047 if (Chain && Chain->isProcessingUpdateRecords()) return;
6048 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "clang/lib/Serialization/ASTWriter.cpp", 6048, __extension__
__PRETTY_FUNCTION__))
;
6049 assert(!D->isUnconditionallyVisible() && "expected a hidden declaration")(static_cast <bool> (!D->isUnconditionallyVisible() &&
"expected a hidden declaration") ? void (0) : __assert_fail (
"!D->isUnconditionallyVisible() && \"expected a hidden declaration\""
, "clang/lib/Serialization/ASTWriter.cpp", 6049, __extension__
__PRETTY_FUNCTION__))
;
6050 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_EXPORTED, M));
6051}
6052
6053void ASTWriter::AddedAttributeToRecord(const Attr *Attr,
6054 const RecordDecl *Record) {
6055 if (Chain && Chain->isProcessingUpdateRecords()) return;
6056 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "clang/lib/Serialization/ASTWriter.cpp", 6056, __extension__
__PRETTY_FUNCTION__))
;
6057 if (!Record->isFromASTFile())
6058 return;
6059 DeclUpdates[Record].push_back(