Bug Summary

File:clang/lib/Serialization/ASTWriter.cpp
Warning:line 1901, column 19
Potential memory leak

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~++20220119111520+da61cb019eb2/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~++20220119111520+da61cb019eb2/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-14~++20220119111520+da61cb019eb2/clang/include -I tools/clang/include -I include -I /build/llvm-toolchain-snapshot-14~++20220119111520+da61cb019eb2/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~++20220119111520+da61cb019eb2/build-llvm=build-llvm -fmacro-prefix-map=/build/llvm-toolchain-snapshot-14~++20220119111520+da61cb019eb2/= -fcoverage-prefix-map=/build/llvm-toolchain-snapshot-14~++20220119111520+da61cb019eb2/build-llvm=build-llvm -fcoverage-prefix-map=/build/llvm-toolchain-snapshot-14~++20220119111520+da61cb019eb2/= -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~++20220119111520+da61cb019eb2/build-llvm -fdebug-prefix-map=/build/llvm-toolchain-snapshot-14~++20220119111520+da61cb019eb2/build-llvm=build-llvm -fdebug-prefix-map=/build/llvm-toolchain-snapshot-14~++20220119111520+da61cb019eb2/= -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-2022-01-19-134126-35450-1 -x c++ /build/llvm-toolchain-snapshot-14~++20220119111520+da61cb019eb2/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 Record.push_back(TL.isDecltypeAuto());
456 if (TL.isDecltypeAuto())
457 Record.AddSourceLocation(TL.getRParenLoc());
458}
459
460void TypeLocWriter::VisitDeducedTemplateSpecializationTypeLoc(
461 DeducedTemplateSpecializationTypeLoc TL) {
462 Record.AddSourceLocation(TL.getTemplateNameLoc());
463}
464
465void TypeLocWriter::VisitRecordTypeLoc(RecordTypeLoc TL) {
466 Record.AddSourceLocation(TL.getNameLoc());
467}
468
469void TypeLocWriter::VisitEnumTypeLoc(EnumTypeLoc TL) {
470 Record.AddSourceLocation(TL.getNameLoc());
471}
472
473void TypeLocWriter::VisitAttributedTypeLoc(AttributedTypeLoc TL) {
474 Record.AddAttr(TL.getAttr());
475}
476
477void TypeLocWriter::VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL) {
478 Record.AddSourceLocation(TL.getNameLoc());
479}
480
481void TypeLocWriter::VisitSubstTemplateTypeParmTypeLoc(
482 SubstTemplateTypeParmTypeLoc TL) {
483 Record.AddSourceLocation(TL.getNameLoc());
484}
485
486void TypeLocWriter::VisitSubstTemplateTypeParmPackTypeLoc(
487 SubstTemplateTypeParmPackTypeLoc TL) {
488 Record.AddSourceLocation(TL.getNameLoc());
489}
490
491void TypeLocWriter::VisitTemplateSpecializationTypeLoc(
492 TemplateSpecializationTypeLoc TL) {
493 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
494 Record.AddSourceLocation(TL.getTemplateNameLoc());
495 Record.AddSourceLocation(TL.getLAngleLoc());
496 Record.AddSourceLocation(TL.getRAngleLoc());
497 for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i)
498 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(i).getArgument().getKind(),
499 TL.getArgLoc(i).getLocInfo());
500}
501
502void TypeLocWriter::VisitParenTypeLoc(ParenTypeLoc TL) {
503 Record.AddSourceLocation(TL.getLParenLoc());
504 Record.AddSourceLocation(TL.getRParenLoc());
505}
506
507void TypeLocWriter::VisitMacroQualifiedTypeLoc(MacroQualifiedTypeLoc TL) {
508 Record.AddSourceLocation(TL.getExpansionLoc());
509}
510
511void TypeLocWriter::VisitElaboratedTypeLoc(ElaboratedTypeLoc TL) {
512 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
513 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
514}
515
516void TypeLocWriter::VisitInjectedClassNameTypeLoc(InjectedClassNameTypeLoc TL) {
517 Record.AddSourceLocation(TL.getNameLoc());
518}
519
520void TypeLocWriter::VisitDependentNameTypeLoc(DependentNameTypeLoc TL) {
521 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
522 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
523 Record.AddSourceLocation(TL.getNameLoc());
524}
525
526void TypeLocWriter::VisitDependentTemplateSpecializationTypeLoc(
527 DependentTemplateSpecializationTypeLoc TL) {
528 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
529 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
530 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
531 Record.AddSourceLocation(TL.getTemplateNameLoc());
532 Record.AddSourceLocation(TL.getLAngleLoc());
533 Record.AddSourceLocation(TL.getRAngleLoc());
534 for (unsigned I = 0, E = TL.getNumArgs(); I != E; ++I)
535 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(I).getArgument().getKind(),
536 TL.getArgLoc(I).getLocInfo());
537}
538
539void TypeLocWriter::VisitPackExpansionTypeLoc(PackExpansionTypeLoc TL) {
540 Record.AddSourceLocation(TL.getEllipsisLoc());
541}
542
543void TypeLocWriter::VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) {
544 Record.AddSourceLocation(TL.getNameLoc());
545}
546
547void TypeLocWriter::VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) {
548 Record.push_back(TL.hasBaseTypeAsWritten());
549 Record.AddSourceLocation(TL.getTypeArgsLAngleLoc());
550 Record.AddSourceLocation(TL.getTypeArgsRAngleLoc());
551 for (unsigned i = 0, e = TL.getNumTypeArgs(); i != e; ++i)
552 Record.AddTypeSourceInfo(TL.getTypeArgTInfo(i));
553 Record.AddSourceLocation(TL.getProtocolLAngleLoc());
554 Record.AddSourceLocation(TL.getProtocolRAngleLoc());
555 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
556 Record.AddSourceLocation(TL.getProtocolLoc(i));
557}
558
559void TypeLocWriter::VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) {
560 Record.AddSourceLocation(TL.getStarLoc());
561}
562
563void TypeLocWriter::VisitAtomicTypeLoc(AtomicTypeLoc TL) {
564 Record.AddSourceLocation(TL.getKWLoc());
565 Record.AddSourceLocation(TL.getLParenLoc());
566 Record.AddSourceLocation(TL.getRParenLoc());
567}
568
569void TypeLocWriter::VisitPipeTypeLoc(PipeTypeLoc TL) {
570 Record.AddSourceLocation(TL.getKWLoc());
571}
572
573void TypeLocWriter::VisitBitIntTypeLoc(clang::BitIntTypeLoc TL) {
574 Record.AddSourceLocation(TL.getNameLoc());
575}
576void TypeLocWriter::VisitDependentBitIntTypeLoc(
577 clang::DependentBitIntTypeLoc TL) {
578 Record.AddSourceLocation(TL.getNameLoc());
579}
580
581void ASTWriter::WriteTypeAbbrevs() {
582 using namespace llvm;
583
584 std::shared_ptr<BitCodeAbbrev> Abv;
585
586 // Abbreviation for TYPE_EXT_QUAL
587 Abv = std::make_shared<BitCodeAbbrev>();
588 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_EXT_QUAL));
589 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
590 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 3)); // Quals
591 TypeExtQualAbbrev = Stream.EmitAbbrev(std::move(Abv));
592
593 // Abbreviation for TYPE_FUNCTION_PROTO
594 Abv = std::make_shared<BitCodeAbbrev>();
595 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_FUNCTION_PROTO));
596 // FunctionType
597 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ReturnType
598 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // NoReturn
599 Abv->Add(BitCodeAbbrevOp(0)); // HasRegParm
600 Abv->Add(BitCodeAbbrevOp(0)); // RegParm
601 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 4)); // CC
602 Abv->Add(BitCodeAbbrevOp(0)); // ProducesResult
603 Abv->Add(BitCodeAbbrevOp(0)); // NoCallerSavedRegs
604 Abv->Add(BitCodeAbbrevOp(0)); // NoCfCheck
605 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // CmseNSCall
606 // FunctionProtoType
607 Abv->Add(BitCodeAbbrevOp(0)); // IsVariadic
608 Abv->Add(BitCodeAbbrevOp(0)); // HasTrailingReturn
609 Abv->Add(BitCodeAbbrevOp(0)); // TypeQuals
610 Abv->Add(BitCodeAbbrevOp(0)); // RefQualifier
611 Abv->Add(BitCodeAbbrevOp(EST_None)); // ExceptionSpec
612 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // NumParams
613 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
614 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Params
615 TypeFunctionProtoAbbrev = Stream.EmitAbbrev(std::move(Abv));
616}
617
618//===----------------------------------------------------------------------===//
619// ASTWriter Implementation
620//===----------------------------------------------------------------------===//
621
622static void EmitBlockID(unsigned ID, const char *Name,
623 llvm::BitstreamWriter &Stream,
624 ASTWriter::RecordDataImpl &Record) {
625 Record.clear();
626 Record.push_back(ID);
627 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETBID, Record);
628
629 // Emit the block name if present.
630 if (!Name || Name[0] == 0)
631 return;
632 Record.clear();
633 while (*Name)
634 Record.push_back(*Name++);
635 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_BLOCKNAME, Record);
636}
637
638static void EmitRecordID(unsigned ID, const char *Name,
639 llvm::BitstreamWriter &Stream,
640 ASTWriter::RecordDataImpl &Record) {
641 Record.clear();
642 Record.push_back(ID);
643 while (*Name)
644 Record.push_back(*Name++);
645 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETRECORDNAME, Record);
646}
647
648static void AddStmtsExprs(llvm::BitstreamWriter &Stream,
649 ASTWriter::RecordDataImpl &Record) {
650#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
651 RECORD(STMT_STOP);
652 RECORD(STMT_NULL_PTR);
653 RECORD(STMT_REF_PTR);
654 RECORD(STMT_NULL);
655 RECORD(STMT_COMPOUND);
656 RECORD(STMT_CASE);
657 RECORD(STMT_DEFAULT);
658 RECORD(STMT_LABEL);
659 RECORD(STMT_ATTRIBUTED);
660 RECORD(STMT_IF);
661 RECORD(STMT_SWITCH);
662 RECORD(STMT_WHILE);
663 RECORD(STMT_DO);
664 RECORD(STMT_FOR);
665 RECORD(STMT_GOTO);
666 RECORD(STMT_INDIRECT_GOTO);
667 RECORD(STMT_CONTINUE);
668 RECORD(STMT_BREAK);
669 RECORD(STMT_RETURN);
670 RECORD(STMT_DECL);
671 RECORD(STMT_GCCASM);
672 RECORD(STMT_MSASM);
673 RECORD(EXPR_PREDEFINED);
674 RECORD(EXPR_DECL_REF);
675 RECORD(EXPR_INTEGER_LITERAL);
676 RECORD(EXPR_FIXEDPOINT_LITERAL);
677 RECORD(EXPR_FLOATING_LITERAL);
678 RECORD(EXPR_IMAGINARY_LITERAL);
679 RECORD(EXPR_STRING_LITERAL);
680 RECORD(EXPR_CHARACTER_LITERAL);
681 RECORD(EXPR_PAREN);
682 RECORD(EXPR_PAREN_LIST);
683 RECORD(EXPR_UNARY_OPERATOR);
684 RECORD(EXPR_SIZEOF_ALIGN_OF);
685 RECORD(EXPR_ARRAY_SUBSCRIPT);
686 RECORD(EXPR_CALL);
687 RECORD(EXPR_MEMBER);
688 RECORD(EXPR_BINARY_OPERATOR);
689 RECORD(EXPR_COMPOUND_ASSIGN_OPERATOR);
690 RECORD(EXPR_CONDITIONAL_OPERATOR);
691 RECORD(EXPR_IMPLICIT_CAST);
692 RECORD(EXPR_CSTYLE_CAST);
693 RECORD(EXPR_COMPOUND_LITERAL);
694 RECORD(EXPR_EXT_VECTOR_ELEMENT);
695 RECORD(EXPR_INIT_LIST);
696 RECORD(EXPR_DESIGNATED_INIT);
697 RECORD(EXPR_DESIGNATED_INIT_UPDATE);
698 RECORD(EXPR_IMPLICIT_VALUE_INIT);
699 RECORD(EXPR_NO_INIT);
700 RECORD(EXPR_VA_ARG);
701 RECORD(EXPR_ADDR_LABEL);
702 RECORD(EXPR_STMT);
703 RECORD(EXPR_CHOOSE);
704 RECORD(EXPR_GNU_NULL);
705 RECORD(EXPR_SHUFFLE_VECTOR);
706 RECORD(EXPR_BLOCK);
707 RECORD(EXPR_GENERIC_SELECTION);
708 RECORD(EXPR_OBJC_STRING_LITERAL);
709 RECORD(EXPR_OBJC_BOXED_EXPRESSION);
710 RECORD(EXPR_OBJC_ARRAY_LITERAL);
711 RECORD(EXPR_OBJC_DICTIONARY_LITERAL);
712 RECORD(EXPR_OBJC_ENCODE);
713 RECORD(EXPR_OBJC_SELECTOR_EXPR);
714 RECORD(EXPR_OBJC_PROTOCOL_EXPR);
715 RECORD(EXPR_OBJC_IVAR_REF_EXPR);
716 RECORD(EXPR_OBJC_PROPERTY_REF_EXPR);
717 RECORD(EXPR_OBJC_KVC_REF_EXPR);
718 RECORD(EXPR_OBJC_MESSAGE_EXPR);
719 RECORD(STMT_OBJC_FOR_COLLECTION);
720 RECORD(STMT_OBJC_CATCH);
721 RECORD(STMT_OBJC_FINALLY);
722 RECORD(STMT_OBJC_AT_TRY);
723 RECORD(STMT_OBJC_AT_SYNCHRONIZED);
724 RECORD(STMT_OBJC_AT_THROW);
725 RECORD(EXPR_OBJC_BOOL_LITERAL);
726 RECORD(STMT_CXX_CATCH);
727 RECORD(STMT_CXX_TRY);
728 RECORD(STMT_CXX_FOR_RANGE);
729 RECORD(EXPR_CXX_OPERATOR_CALL);
730 RECORD(EXPR_CXX_MEMBER_CALL);
731 RECORD(EXPR_CXX_REWRITTEN_BINARY_OPERATOR);
732 RECORD(EXPR_CXX_CONSTRUCT);
733 RECORD(EXPR_CXX_TEMPORARY_OBJECT);
734 RECORD(EXPR_CXX_STATIC_CAST);
735 RECORD(EXPR_CXX_DYNAMIC_CAST);
736 RECORD(EXPR_CXX_REINTERPRET_CAST);
737 RECORD(EXPR_CXX_CONST_CAST);
738 RECORD(EXPR_CXX_ADDRSPACE_CAST);
739 RECORD(EXPR_CXX_FUNCTIONAL_CAST);
740 RECORD(EXPR_USER_DEFINED_LITERAL);
741 RECORD(EXPR_CXX_STD_INITIALIZER_LIST);
742 RECORD(EXPR_CXX_BOOL_LITERAL);
743 RECORD(EXPR_CXX_NULL_PTR_LITERAL);
744 RECORD(EXPR_CXX_TYPEID_EXPR);
745 RECORD(EXPR_CXX_TYPEID_TYPE);
746 RECORD(EXPR_CXX_THIS);
747 RECORD(EXPR_CXX_THROW);
748 RECORD(EXPR_CXX_DEFAULT_ARG);
749 RECORD(EXPR_CXX_DEFAULT_INIT);
750 RECORD(EXPR_CXX_BIND_TEMPORARY);
751 RECORD(EXPR_CXX_SCALAR_VALUE_INIT);
752 RECORD(EXPR_CXX_NEW);
753 RECORD(EXPR_CXX_DELETE);
754 RECORD(EXPR_CXX_PSEUDO_DESTRUCTOR);
755 RECORD(EXPR_EXPR_WITH_CLEANUPS);
756 RECORD(EXPR_CXX_DEPENDENT_SCOPE_MEMBER);
757 RECORD(EXPR_CXX_DEPENDENT_SCOPE_DECL_REF);
758 RECORD(EXPR_CXX_UNRESOLVED_CONSTRUCT);
759 RECORD(EXPR_CXX_UNRESOLVED_MEMBER);
760 RECORD(EXPR_CXX_UNRESOLVED_LOOKUP);
761 RECORD(EXPR_CXX_EXPRESSION_TRAIT);
762 RECORD(EXPR_CXX_NOEXCEPT);
763 RECORD(EXPR_OPAQUE_VALUE);
764 RECORD(EXPR_BINARY_CONDITIONAL_OPERATOR);
765 RECORD(EXPR_TYPE_TRAIT);
766 RECORD(EXPR_ARRAY_TYPE_TRAIT);
767 RECORD(EXPR_PACK_EXPANSION);
768 RECORD(EXPR_SIZEOF_PACK);
769 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM);
770 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK);
771 RECORD(EXPR_FUNCTION_PARM_PACK);
772 RECORD(EXPR_MATERIALIZE_TEMPORARY);
773 RECORD(EXPR_CUDA_KERNEL_CALL);
774 RECORD(EXPR_CXX_UUIDOF_EXPR);
775 RECORD(EXPR_CXX_UUIDOF_TYPE);
776 RECORD(EXPR_LAMBDA);
777#undef RECORD
778}
779
780void ASTWriter::WriteBlockInfoBlock() {
781 RecordData Record;
782 Stream.EnterBlockInfoBlock();
783
784#define BLOCK(X) EmitBlockID(X ## _ID, #X, Stream, Record)
785#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
786
787 // Control Block.
788 BLOCK(CONTROL_BLOCK);
789 RECORD(METADATA);
790 RECORD(MODULE_NAME);
791 RECORD(MODULE_DIRECTORY);
792 RECORD(MODULE_MAP_FILE);
793 RECORD(IMPORTS);
794 RECORD(ORIGINAL_FILE);
795 RECORD(ORIGINAL_PCH_DIR);
796 RECORD(ORIGINAL_FILE_ID);
797 RECORD(INPUT_FILE_OFFSETS);
798
799 BLOCK(OPTIONS_BLOCK);
800 RECORD(LANGUAGE_OPTIONS);
801 RECORD(TARGET_OPTIONS);
802 RECORD(FILE_SYSTEM_OPTIONS);
803 RECORD(HEADER_SEARCH_OPTIONS);
804 RECORD(PREPROCESSOR_OPTIONS);
805
806 BLOCK(INPUT_FILES_BLOCK);
807 RECORD(INPUT_FILE);
808 RECORD(INPUT_FILE_HASH);
809
810 // AST Top-Level Block.
811 BLOCK(AST_BLOCK);
812 RECORD(TYPE_OFFSET);
813 RECORD(DECL_OFFSET);
814 RECORD(IDENTIFIER_OFFSET);
815 RECORD(IDENTIFIER_TABLE);
816 RECORD(EAGERLY_DESERIALIZED_DECLS);
817 RECORD(MODULAR_CODEGEN_DECLS);
818 RECORD(SPECIAL_TYPES);
819 RECORD(STATISTICS);
820 RECORD(TENTATIVE_DEFINITIONS);
821 RECORD(SELECTOR_OFFSETS);
822 RECORD(METHOD_POOL);
823 RECORD(PP_COUNTER_VALUE);
824 RECORD(SOURCE_LOCATION_OFFSETS);
825 RECORD(SOURCE_LOCATION_PRELOADS);
826 RECORD(EXT_VECTOR_DECLS);
827 RECORD(UNUSED_FILESCOPED_DECLS);
828 RECORD(PPD_ENTITIES_OFFSETS);
829 RECORD(VTABLE_USES);
830 RECORD(PPD_SKIPPED_RANGES);
831 RECORD(REFERENCED_SELECTOR_POOL);
832 RECORD(TU_UPDATE_LEXICAL);
833 RECORD(SEMA_DECL_REFS);
834 RECORD(WEAK_UNDECLARED_IDENTIFIERS);
835 RECORD(PENDING_IMPLICIT_INSTANTIATIONS);
836 RECORD(UPDATE_VISIBLE);
837 RECORD(DECL_UPDATE_OFFSETS);
838 RECORD(DECL_UPDATES);
839 RECORD(CUDA_SPECIAL_DECL_REFS);
840 RECORD(HEADER_SEARCH_TABLE);
841 RECORD(FP_PRAGMA_OPTIONS);
842 RECORD(OPENCL_EXTENSIONS);
843 RECORD(OPENCL_EXTENSION_TYPES);
844 RECORD(OPENCL_EXTENSION_DECLS);
845 RECORD(DELEGATING_CTORS);
846 RECORD(KNOWN_NAMESPACES);
847 RECORD(MODULE_OFFSET_MAP);
848 RECORD(SOURCE_MANAGER_LINE_TABLE);
849 RECORD(OBJC_CATEGORIES_MAP);
850 RECORD(FILE_SORTED_DECLS);
851 RECORD(IMPORTED_MODULES);
852 RECORD(OBJC_CATEGORIES);
853 RECORD(MACRO_OFFSET);
854 RECORD(INTERESTING_IDENTIFIERS);
855 RECORD(UNDEFINED_BUT_USED);
856 RECORD(LATE_PARSED_TEMPLATE);
857 RECORD(OPTIMIZE_PRAGMA_OPTIONS);
858 RECORD(MSSTRUCT_PRAGMA_OPTIONS);
859 RECORD(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS);
860 RECORD(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES);
861 RECORD(DELETE_EXPRS_TO_ANALYZE);
862 RECORD(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH);
863 RECORD(PP_CONDITIONAL_STACK);
864 RECORD(DECLS_TO_CHECK_FOR_DEFERRED_DIAGS);
865
866 // SourceManager Block.
867 BLOCK(SOURCE_MANAGER_BLOCK);
868 RECORD(SM_SLOC_FILE_ENTRY);
869 RECORD(SM_SLOC_BUFFER_ENTRY);
870 RECORD(SM_SLOC_BUFFER_BLOB);
871 RECORD(SM_SLOC_BUFFER_BLOB_COMPRESSED);
872 RECORD(SM_SLOC_EXPANSION_ENTRY);
873
874 // Preprocessor Block.
875 BLOCK(PREPROCESSOR_BLOCK);
876 RECORD(PP_MACRO_DIRECTIVE_HISTORY);
877 RECORD(PP_MACRO_FUNCTION_LIKE);
878 RECORD(PP_MACRO_OBJECT_LIKE);
879 RECORD(PP_MODULE_MACRO);
880 RECORD(PP_TOKEN);
881
882 // Submodule Block.
883 BLOCK(SUBMODULE_BLOCK);
884 RECORD(SUBMODULE_METADATA);
885 RECORD(SUBMODULE_DEFINITION);
886 RECORD(SUBMODULE_UMBRELLA_HEADER);
887 RECORD(SUBMODULE_HEADER);
888 RECORD(SUBMODULE_TOPHEADER);
889 RECORD(SUBMODULE_UMBRELLA_DIR);
890 RECORD(SUBMODULE_IMPORTS);
891 RECORD(SUBMODULE_EXPORTS);
892 RECORD(SUBMODULE_REQUIRES);
893 RECORD(SUBMODULE_EXCLUDED_HEADER);
894 RECORD(SUBMODULE_LINK_LIBRARY);
895 RECORD(SUBMODULE_CONFIG_MACRO);
896 RECORD(SUBMODULE_CONFLICT);
897 RECORD(SUBMODULE_PRIVATE_HEADER);
898 RECORD(SUBMODULE_TEXTUAL_HEADER);
899 RECORD(SUBMODULE_PRIVATE_TEXTUAL_HEADER);
900 RECORD(SUBMODULE_INITIALIZERS);
901 RECORD(SUBMODULE_EXPORT_AS);
902
903 // Comments Block.
904 BLOCK(COMMENTS_BLOCK);
905 RECORD(COMMENTS_RAW_COMMENT);
906
907 // Decls and Types block.
908 BLOCK(DECLTYPES_BLOCK);
909 RECORD(TYPE_EXT_QUAL);
910 RECORD(TYPE_COMPLEX);
911 RECORD(TYPE_POINTER);
912 RECORD(TYPE_BLOCK_POINTER);
913 RECORD(TYPE_LVALUE_REFERENCE);
914 RECORD(TYPE_RVALUE_REFERENCE);
915 RECORD(TYPE_MEMBER_POINTER);
916 RECORD(TYPE_CONSTANT_ARRAY);
917 RECORD(TYPE_INCOMPLETE_ARRAY);
918 RECORD(TYPE_VARIABLE_ARRAY);
919 RECORD(TYPE_VECTOR);
920 RECORD(TYPE_EXT_VECTOR);
921 RECORD(TYPE_FUNCTION_NO_PROTO);
922 RECORD(TYPE_FUNCTION_PROTO);
923 RECORD(TYPE_TYPEDEF);
924 RECORD(TYPE_TYPEOF_EXPR);
925 RECORD(TYPE_TYPEOF);
926 RECORD(TYPE_RECORD);
927 RECORD(TYPE_ENUM);
928 RECORD(TYPE_OBJC_INTERFACE);
929 RECORD(TYPE_OBJC_OBJECT_POINTER);
930 RECORD(TYPE_DECLTYPE);
931 RECORD(TYPE_ELABORATED);
932 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM);
933 RECORD(TYPE_UNRESOLVED_USING);
934 RECORD(TYPE_INJECTED_CLASS_NAME);
935 RECORD(TYPE_OBJC_OBJECT);
936 RECORD(TYPE_TEMPLATE_TYPE_PARM);
937 RECORD(TYPE_TEMPLATE_SPECIALIZATION);
938 RECORD(TYPE_DEPENDENT_NAME);
939 RECORD(TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION);
940 RECORD(TYPE_DEPENDENT_SIZED_ARRAY);
941 RECORD(TYPE_PAREN);
942 RECORD(TYPE_MACRO_QUALIFIED);
943 RECORD(TYPE_PACK_EXPANSION);
944 RECORD(TYPE_ATTRIBUTED);
945 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK);
946 RECORD(TYPE_AUTO);
947 RECORD(TYPE_UNARY_TRANSFORM);
948 RECORD(TYPE_ATOMIC);
949 RECORD(TYPE_DECAYED);
950 RECORD(TYPE_ADJUSTED);
951 RECORD(TYPE_OBJC_TYPE_PARAM);
952 RECORD(LOCAL_REDECLARATIONS);
953 RECORD(DECL_TYPEDEF);
954 RECORD(DECL_TYPEALIAS);
955 RECORD(DECL_ENUM);
956 RECORD(DECL_RECORD);
957 RECORD(DECL_ENUM_CONSTANT);
958 RECORD(DECL_FUNCTION);
959 RECORD(DECL_OBJC_METHOD);
960 RECORD(DECL_OBJC_INTERFACE);
961 RECORD(DECL_OBJC_PROTOCOL);
962 RECORD(DECL_OBJC_IVAR);
963 RECORD(DECL_OBJC_AT_DEFS_FIELD);
964 RECORD(DECL_OBJC_CATEGORY);
965 RECORD(DECL_OBJC_CATEGORY_IMPL);
966 RECORD(DECL_OBJC_IMPLEMENTATION);
967 RECORD(DECL_OBJC_COMPATIBLE_ALIAS);
968 RECORD(DECL_OBJC_PROPERTY);
969 RECORD(DECL_OBJC_PROPERTY_IMPL);
970 RECORD(DECL_FIELD);
971 RECORD(DECL_MS_PROPERTY);
972 RECORD(DECL_VAR);
973 RECORD(DECL_IMPLICIT_PARAM);
974 RECORD(DECL_PARM_VAR);
975 RECORD(DECL_FILE_SCOPE_ASM);
976 RECORD(DECL_BLOCK);
977 RECORD(DECL_CONTEXT_LEXICAL);
978 RECORD(DECL_CONTEXT_VISIBLE);
979 RECORD(DECL_NAMESPACE);
980 RECORD(DECL_NAMESPACE_ALIAS);
981 RECORD(DECL_USING);
982 RECORD(DECL_USING_SHADOW);
983 RECORD(DECL_USING_DIRECTIVE);
984 RECORD(DECL_UNRESOLVED_USING_VALUE);
985 RECORD(DECL_UNRESOLVED_USING_TYPENAME);
986 RECORD(DECL_LINKAGE_SPEC);
987 RECORD(DECL_CXX_RECORD);
988 RECORD(DECL_CXX_METHOD);
989 RECORD(DECL_CXX_CONSTRUCTOR);
990 RECORD(DECL_CXX_DESTRUCTOR);
991 RECORD(DECL_CXX_CONVERSION);
992 RECORD(DECL_ACCESS_SPEC);
993 RECORD(DECL_FRIEND);
994 RECORD(DECL_FRIEND_TEMPLATE);
995 RECORD(DECL_CLASS_TEMPLATE);
996 RECORD(DECL_CLASS_TEMPLATE_SPECIALIZATION);
997 RECORD(DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION);
998 RECORD(DECL_VAR_TEMPLATE);
999 RECORD(DECL_VAR_TEMPLATE_SPECIALIZATION);
1000 RECORD(DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION);
1001 RECORD(DECL_FUNCTION_TEMPLATE);
1002 RECORD(DECL_TEMPLATE_TYPE_PARM);
1003 RECORD(DECL_NON_TYPE_TEMPLATE_PARM);
1004 RECORD(DECL_TEMPLATE_TEMPLATE_PARM);
1005 RECORD(DECL_CONCEPT);
1006 RECORD(DECL_REQUIRES_EXPR_BODY);
1007 RECORD(DECL_TYPE_ALIAS_TEMPLATE);
1008 RECORD(DECL_STATIC_ASSERT);
1009 RECORD(DECL_CXX_BASE_SPECIFIERS);
1010 RECORD(DECL_CXX_CTOR_INITIALIZERS);
1011 RECORD(DECL_INDIRECTFIELD);
1012 RECORD(DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK);
1013 RECORD(DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK);
1014 RECORD(DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION);
1015 RECORD(DECL_IMPORT);
1016 RECORD(DECL_OMP_THREADPRIVATE);
1017 RECORD(DECL_EMPTY);
1018 RECORD(DECL_OBJC_TYPE_PARAM);
1019 RECORD(DECL_OMP_CAPTUREDEXPR);
1020 RECORD(DECL_PRAGMA_COMMENT);
1021 RECORD(DECL_PRAGMA_DETECT_MISMATCH);
1022 RECORD(DECL_OMP_DECLARE_REDUCTION);
1023 RECORD(DECL_OMP_ALLOCATE);
1024
1025 // Statements and Exprs can occur in the Decls and Types block.
1026 AddStmtsExprs(Stream, Record);
1027
1028 BLOCK(PREPROCESSOR_DETAIL_BLOCK);
1029 RECORD(PPD_MACRO_EXPANSION);
1030 RECORD(PPD_MACRO_DEFINITION);
1031 RECORD(PPD_INCLUSION_DIRECTIVE);
1032
1033 // Decls and Types block.
1034 BLOCK(EXTENSION_BLOCK);
1035 RECORD(EXTENSION_METADATA);
1036
1037 BLOCK(UNHASHED_CONTROL_BLOCK);
1038 RECORD(SIGNATURE);
1039 RECORD(AST_BLOCK_HASH);
1040 RECORD(DIAGNOSTIC_OPTIONS);
1041 RECORD(DIAG_PRAGMA_MAPPINGS);
1042
1043#undef RECORD
1044#undef BLOCK
1045 Stream.ExitBlock();
1046}
1047
1048/// Prepares a path for being written to an AST file by converting it
1049/// to an absolute path and removing nested './'s.
1050///
1051/// \return \c true if the path was changed.
1052static bool cleanPathForOutput(FileManager &FileMgr,
1053 SmallVectorImpl<char> &Path) {
1054 bool Changed = FileMgr.makeAbsolutePath(Path);
1055 return Changed | llvm::sys::path::remove_dots(Path);
1056}
1057
1058/// Adjusts the given filename to only write out the portion of the
1059/// filename that is not part of the system root directory.
1060///
1061/// \param Filename the file name to adjust.
1062///
1063/// \param BaseDir When non-NULL, the PCH file is a relocatable AST file and
1064/// the returned filename will be adjusted by this root directory.
1065///
1066/// \returns either the original filename (if it needs no adjustment) or the
1067/// adjusted filename (which points into the @p Filename parameter).
1068static const char *
1069adjustFilenameForRelocatableAST(const char *Filename, StringRef BaseDir) {
1070 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", 1070, __extension__
__PRETTY_FUNCTION__))
;
1071
1072 if (BaseDir.empty())
1073 return Filename;
1074
1075 // Verify that the filename and the system root have the same prefix.
1076 unsigned Pos = 0;
1077 for (; Filename[Pos] && Pos < BaseDir.size(); ++Pos)
1078 if (Filename[Pos] != BaseDir[Pos])
1079 return Filename; // Prefixes don't match.
1080
1081 // We hit the end of the filename before we hit the end of the system root.
1082 if (!Filename[Pos])
1083 return Filename;
1084
1085 // If there's not a path separator at the end of the base directory nor
1086 // immediately after it, then this isn't within the base directory.
1087 if (!llvm::sys::path::is_separator(Filename[Pos])) {
1088 if (!llvm::sys::path::is_separator(BaseDir.back()))
1089 return Filename;
1090 } else {
1091 // If the file name has a '/' at the current position, skip over the '/'.
1092 // We distinguish relative paths from absolute paths by the
1093 // absence of '/' at the beginning of relative paths.
1094 //
1095 // FIXME: This is wrong. We distinguish them by asking if the path is
1096 // absolute, which isn't the same thing. And there might be multiple '/'s
1097 // in a row. Use a better mechanism to indicate whether we have emitted an
1098 // absolute or relative path.
1099 ++Pos;
1100 }
1101
1102 return Filename + Pos;
1103}
1104
1105std::pair<ASTFileSignature, ASTFileSignature>
1106ASTWriter::createSignature(StringRef AllBytes, StringRef ASTBlockBytes) {
1107 llvm::SHA1 Hasher;
1108 Hasher.update(ASTBlockBytes);
1109 auto Hash = Hasher.result();
1110 ASTFileSignature ASTBlockHash = ASTFileSignature::create(Hash);
1111
1112 // Add the remaining bytes (i.e. bytes before the unhashed control block that
1113 // are not part of the AST block).
1114 Hasher.update(
1115 AllBytes.take_front(ASTBlockBytes.bytes_end() - AllBytes.bytes_begin()));
1116 Hasher.update(
1117 AllBytes.take_back(AllBytes.bytes_end() - ASTBlockBytes.bytes_end()));
1118 Hash = Hasher.result();
1119 ASTFileSignature Signature = ASTFileSignature::create(Hash);
1120
1121 return std::make_pair(ASTBlockHash, Signature);
1122}
1123
1124ASTFileSignature ASTWriter::writeUnhashedControlBlock(Preprocessor &PP,
1125 ASTContext &Context) {
1126 using namespace llvm;
1127
1128 // Flush first to prepare the PCM hash (signature).
1129 Stream.FlushToWord();
1130 auto StartOfUnhashedControl = Stream.GetCurrentBitNo() >> 3;
1131
1132 // Enter the block and prepare to write records.
1133 RecordData Record;
1134 Stream.EnterSubblock(UNHASHED_CONTROL_BLOCK_ID, 5);
1135
1136 // For implicit modules, write the hash of the PCM as its signature.
1137 ASTFileSignature Signature;
1138 if (WritingModule &&
1139 PP.getHeaderSearchInfo().getHeaderSearchOpts().ModulesHashContent) {
1140 ASTFileSignature ASTBlockHash;
1141 auto ASTBlockStartByte = ASTBlockRange.first >> 3;
1142 auto ASTBlockByteLength = (ASTBlockRange.second >> 3) - ASTBlockStartByte;
1143 std::tie(ASTBlockHash, Signature) = createSignature(
1144 StringRef(Buffer.begin(), StartOfUnhashedControl),
1145 StringRef(Buffer.begin() + ASTBlockStartByte, ASTBlockByteLength));
1146
1147 Record.append(ASTBlockHash.begin(), ASTBlockHash.end());
1148 Stream.EmitRecord(AST_BLOCK_HASH, Record);
1149 Record.clear();
1150 Record.append(Signature.begin(), Signature.end());
1151 Stream.EmitRecord(SIGNATURE, Record);
1152 Record.clear();
1153 }
1154
1155 // Diagnostic options.
1156 const auto &Diags = Context.getDiagnostics();
1157 const DiagnosticOptions &DiagOpts = Diags.getDiagnosticOptions();
1158#define DIAGOPT(Name, Bits, Default) Record.push_back(DiagOpts.Name);
1159#define ENUM_DIAGOPT(Name, Type, Bits, Default) \
1160 Record.push_back(static_cast<unsigned>(DiagOpts.get##Name()));
1161#include "clang/Basic/DiagnosticOptions.def"
1162 Record.push_back(DiagOpts.Warnings.size());
1163 for (unsigned I = 0, N = DiagOpts.Warnings.size(); I != N; ++I)
1164 AddString(DiagOpts.Warnings[I], Record);
1165 Record.push_back(DiagOpts.Remarks.size());
1166 for (unsigned I = 0, N = DiagOpts.Remarks.size(); I != N; ++I)
1167 AddString(DiagOpts.Remarks[I], Record);
1168 // Note: we don't serialize the log or serialization file names, because they
1169 // are generally transient files and will almost always be overridden.
1170 Stream.EmitRecord(DIAGNOSTIC_OPTIONS, Record);
1171 Record.clear();
1172
1173 // Write out the diagnostic/pragma mappings.
1174 WritePragmaDiagnosticMappings(Diags, /* isModule = */ WritingModule);
1175
1176 // Header search entry usage.
1177 auto HSEntryUsage = PP.getHeaderSearchInfo().computeUserEntryUsage();
1178 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1179 Abbrev->Add(BitCodeAbbrevOp(HEADER_SEARCH_ENTRY_USAGE));
1180 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // Number of bits.
1181 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Bit vector.
1182 unsigned HSUsageAbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1183 {
1184 RecordData::value_type Record[] = {HEADER_SEARCH_ENTRY_USAGE,
1185 HSEntryUsage.size()};
1186 Stream.EmitRecordWithBlob(HSUsageAbbrevCode, Record, bytes(HSEntryUsage));
1187 }
1188
1189 // Leave the options block.
1190 Stream.ExitBlock();
1191 return Signature;
1192}
1193
1194/// Write the control block.
1195void ASTWriter::WriteControlBlock(Preprocessor &PP, ASTContext &Context,
1196 StringRef isysroot,
1197 const std::string &OutputFile) {
1198 using namespace llvm;
1199
1200 Stream.EnterSubblock(CONTROL_BLOCK_ID, 5);
1201 RecordData Record;
1202
1203 // Metadata
1204 auto MetadataAbbrev = std::make_shared<BitCodeAbbrev>();
1205 MetadataAbbrev->Add(BitCodeAbbrevOp(METADATA));
1206 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Major
1207 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Minor
1208 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang maj.
1209 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang min.
1210 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Relocatable
1211 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Timestamps
1212 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Errors
1213 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // SVN branch/tag
1214 unsigned MetadataAbbrevCode = Stream.EmitAbbrev(std::move(MetadataAbbrev));
1215 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", 1216, __extension__
__PRETTY_FUNCTION__))
1216 "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", 1216, __extension__
__PRETTY_FUNCTION__))
;
1217 {
1218 RecordData::value_type Record[] = {
1219 METADATA,
1220 VERSION_MAJOR,
1221 VERSION_MINOR,
1222 CLANG_VERSION_MAJOR14,
1223 CLANG_VERSION_MINOR0,
1224 !isysroot.empty(),
1225 IncludeTimestamps,
1226 ASTHasCompilerErrors};
1227 Stream.EmitRecordWithBlob(MetadataAbbrevCode, Record,
1228 getClangFullRepositoryVersion());
1229 }
1230
1231 if (WritingModule) {
1232 // Module name
1233 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1234 Abbrev->Add(BitCodeAbbrevOp(MODULE_NAME));
1235 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
1236 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1237 RecordData::value_type Record[] = {MODULE_NAME};
1238 Stream.EmitRecordWithBlob(AbbrevCode, Record, WritingModule->Name);
1239 }
1240
1241 if (WritingModule && WritingModule->Directory) {
1242 SmallString<128> BaseDir(WritingModule->Directory->getName());
1243 cleanPathForOutput(Context.getSourceManager().getFileManager(), BaseDir);
1244
1245 // If the home of the module is the current working directory, then we
1246 // want to pick up the cwd of the build process loading the module, not
1247 // our cwd, when we load this module.
1248 if (!PP.getHeaderSearchInfo()
1249 .getHeaderSearchOpts()
1250 .ModuleMapFileHomeIsCwd ||
1251 WritingModule->Directory->getName() != StringRef(".")) {
1252 // Module directory.
1253 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1254 Abbrev->Add(BitCodeAbbrevOp(MODULE_DIRECTORY));
1255 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Directory
1256 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1257
1258 RecordData::value_type Record[] = {MODULE_DIRECTORY};
1259 Stream.EmitRecordWithBlob(AbbrevCode, Record, BaseDir);
1260 }
1261
1262 // Write out all other paths relative to the base directory if possible.
1263 BaseDirectory.assign(BaseDir.begin(), BaseDir.end());
1264 } else if (!isysroot.empty()) {
1265 // Write out paths relative to the sysroot if possible.
1266 BaseDirectory = std::string(isysroot);
1267 }
1268
1269 // Module map file
1270 if (WritingModule && WritingModule->Kind == Module::ModuleMapModule) {
1271 Record.clear();
1272
1273 auto &Map = PP.getHeaderSearchInfo().getModuleMap();
1274 AddPath(WritingModule->PresumedModuleMapFile.empty()
1275 ? Map.getModuleMapFileForUniquing(WritingModule)->getName()
1276 : StringRef(WritingModule->PresumedModuleMapFile),
1277 Record);
1278
1279 // Additional module map files.
1280 if (auto *AdditionalModMaps =
1281 Map.getAdditionalModuleMapFiles(WritingModule)) {
1282 Record.push_back(AdditionalModMaps->size());
1283 for (const FileEntry *F : *AdditionalModMaps)
1284 AddPath(F->getName(), Record);
1285 } else {
1286 Record.push_back(0);
1287 }
1288
1289 Stream.EmitRecord(MODULE_MAP_FILE, Record);
1290 }
1291
1292 // Imports
1293 if (Chain) {
1294 serialization::ModuleManager &Mgr = Chain->getModuleManager();
1295 Record.clear();
1296
1297 for (ModuleFile &M : Mgr) {
1298 // Skip modules that weren't directly imported.
1299 if (!M.isDirectlyImported())
1300 continue;
1301
1302 Record.push_back((unsigned)M.Kind); // FIXME: Stable encoding
1303 AddSourceLocation(M.ImportLoc, Record);
1304
1305 // If we have calculated signature, there is no need to store
1306 // the size or timestamp.
1307 Record.push_back(M.Signature ? 0 : M.File->getSize());
1308 Record.push_back(M.Signature ? 0 : getTimestampForOutput(M.File));
1309
1310 for (auto I : M.Signature)
1311 Record.push_back(I);
1312
1313 AddString(M.ModuleName, Record);
1314 AddPath(M.FileName, Record);
1315 }
1316 Stream.EmitRecord(IMPORTS, Record);
1317 }
1318
1319 // Write the options block.
1320 Stream.EnterSubblock(OPTIONS_BLOCK_ID, 4);
1321
1322 // Language options.
1323 Record.clear();
1324 const LangOptions &LangOpts = Context.getLangOpts();
1325#define LANGOPT(Name, Bits, Default, Description) \
1326 Record.push_back(LangOpts.Name);
1327#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1328 Record.push_back(static_cast<unsigned>(LangOpts.get##Name()));
1329#include "clang/Basic/LangOptions.def"
1330#define SANITIZER(NAME, ID) \
1331 Record.push_back(LangOpts.Sanitize.has(SanitizerKind::ID));
1332#include "clang/Basic/Sanitizers.def"
1333
1334 Record.push_back(LangOpts.ModuleFeatures.size());
1335 for (StringRef Feature : LangOpts.ModuleFeatures)
1336 AddString(Feature, Record);
1337
1338 Record.push_back((unsigned) LangOpts.ObjCRuntime.getKind());
1339 AddVersionTuple(LangOpts.ObjCRuntime.getVersion(), Record);
1340
1341 AddString(LangOpts.CurrentModule, Record);
1342
1343 // Comment options.
1344 Record.push_back(LangOpts.CommentOpts.BlockCommandNames.size());
1345 for (const auto &I : LangOpts.CommentOpts.BlockCommandNames) {
1346 AddString(I, Record);
1347 }
1348 Record.push_back(LangOpts.CommentOpts.ParseAllComments);
1349
1350 // OpenMP offloading options.
1351 Record.push_back(LangOpts.OMPTargetTriples.size());
1352 for (auto &T : LangOpts.OMPTargetTriples)
1353 AddString(T.getTriple(), Record);
1354
1355 AddString(LangOpts.OMPHostIRFile, Record);
1356
1357 Stream.EmitRecord(LANGUAGE_OPTIONS, Record);
1358
1359 // Target options.
1360 Record.clear();
1361 const TargetInfo &Target = Context.getTargetInfo();
1362 const TargetOptions &TargetOpts = Target.getTargetOpts();
1363 AddString(TargetOpts.Triple, Record);
1364 AddString(TargetOpts.CPU, Record);
1365 AddString(TargetOpts.TuneCPU, Record);
1366 AddString(TargetOpts.ABI, Record);
1367 Record.push_back(TargetOpts.FeaturesAsWritten.size());
1368 for (unsigned I = 0, N = TargetOpts.FeaturesAsWritten.size(); I != N; ++I) {
1369 AddString(TargetOpts.FeaturesAsWritten[I], Record);
1370 }
1371 Record.push_back(TargetOpts.Features.size());
1372 for (unsigned I = 0, N = TargetOpts.Features.size(); I != N; ++I) {
1373 AddString(TargetOpts.Features[I], Record);
1374 }
1375 Stream.EmitRecord(TARGET_OPTIONS, Record);
1376
1377 // File system options.
1378 Record.clear();
1379 const FileSystemOptions &FSOpts =
1380 Context.getSourceManager().getFileManager().getFileSystemOpts();
1381 AddString(FSOpts.WorkingDir, Record);
1382 Stream.EmitRecord(FILE_SYSTEM_OPTIONS, Record);
1383
1384 // Header search options.
1385 Record.clear();
1386 const HeaderSearchOptions &HSOpts
1387 = PP.getHeaderSearchInfo().getHeaderSearchOpts();
1388 AddString(HSOpts.Sysroot, Record);
1389
1390 // Include entries.
1391 Record.push_back(HSOpts.UserEntries.size());
1392 for (unsigned I = 0, N = HSOpts.UserEntries.size(); I != N; ++I) {
1393 const HeaderSearchOptions::Entry &Entry = HSOpts.UserEntries[I];
1394 AddString(Entry.Path, Record);
1395 Record.push_back(static_cast<unsigned>(Entry.Group));
1396 Record.push_back(Entry.IsFramework);
1397 Record.push_back(Entry.IgnoreSysRoot);
1398 }
1399
1400 // System header prefixes.
1401 Record.push_back(HSOpts.SystemHeaderPrefixes.size());
1402 for (unsigned I = 0, N = HSOpts.SystemHeaderPrefixes.size(); I != N; ++I) {
1403 AddString(HSOpts.SystemHeaderPrefixes[I].Prefix, Record);
1404 Record.push_back(HSOpts.SystemHeaderPrefixes[I].IsSystemHeader);
1405 }
1406
1407 AddString(HSOpts.ResourceDir, Record);
1408 AddString(HSOpts.ModuleCachePath, Record);
1409 AddString(HSOpts.ModuleUserBuildPath, Record);
1410 Record.push_back(HSOpts.DisableModuleHash);
1411 Record.push_back(HSOpts.ImplicitModuleMaps);
1412 Record.push_back(HSOpts.ModuleMapFileHomeIsCwd);
1413 Record.push_back(HSOpts.EnablePrebuiltImplicitModules);
1414 Record.push_back(HSOpts.UseBuiltinIncludes);
1415 Record.push_back(HSOpts.UseStandardSystemIncludes);
1416 Record.push_back(HSOpts.UseStandardCXXIncludes);
1417 Record.push_back(HSOpts.UseLibcxx);
1418 // Write out the specific module cache path that contains the module files.
1419 AddString(PP.getHeaderSearchInfo().getModuleCachePath(), Record);
1420 Stream.EmitRecord(HEADER_SEARCH_OPTIONS, Record);
1421
1422 // Preprocessor options.
1423 Record.clear();
1424 const PreprocessorOptions &PPOpts = PP.getPreprocessorOpts();
1425
1426 // Macro definitions.
1427 Record.push_back(PPOpts.Macros.size());
1428 for (unsigned I = 0, N = PPOpts.Macros.size(); I != N; ++I) {
1429 AddString(PPOpts.Macros[I].first, Record);
1430 Record.push_back(PPOpts.Macros[I].second);
1431 }
1432
1433 // Includes
1434 Record.push_back(PPOpts.Includes.size());
1435 for (unsigned I = 0, N = PPOpts.Includes.size(); I != N; ++I)
1436 AddString(PPOpts.Includes[I], Record);
1437
1438 // Macro includes
1439 Record.push_back(PPOpts.MacroIncludes.size());
1440 for (unsigned I = 0, N = PPOpts.MacroIncludes.size(); I != N; ++I)
1441 AddString(PPOpts.MacroIncludes[I], Record);
1442
1443 Record.push_back(PPOpts.UsePredefines);
1444 // Detailed record is important since it is used for the module cache hash.
1445 Record.push_back(PPOpts.DetailedRecord);
1446 AddString(PPOpts.ImplicitPCHInclude, Record);
1447 Record.push_back(static_cast<unsigned>(PPOpts.ObjCXXARCStandardLibrary));
1448 Stream.EmitRecord(PREPROCESSOR_OPTIONS, Record);
1449
1450 // Leave the options block.
1451 Stream.ExitBlock();
1452
1453 // Original file name and file ID
1454 SourceManager &SM = Context.getSourceManager();
1455 if (const FileEntry *MainFile = SM.getFileEntryForID(SM.getMainFileID())) {
1456 auto FileAbbrev = std::make_shared<BitCodeAbbrev>();
1457 FileAbbrev->Add(BitCodeAbbrevOp(ORIGINAL_FILE));
1458 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // File ID
1459 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1460 unsigned FileAbbrevCode = Stream.EmitAbbrev(std::move(FileAbbrev));
1461
1462 Record.clear();
1463 Record.push_back(ORIGINAL_FILE);
1464 Record.push_back(SM.getMainFileID().getOpaqueValue());
1465 EmitRecordWithPath(FileAbbrevCode, Record, MainFile->getName());
1466 }
1467
1468 Record.clear();
1469 Record.push_back(SM.getMainFileID().getOpaqueValue());
1470 Stream.EmitRecord(ORIGINAL_FILE_ID, Record);
1471
1472 // Original PCH directory
1473 if (!OutputFile.empty() && OutputFile != "-") {
1474 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1475 Abbrev->Add(BitCodeAbbrevOp(ORIGINAL_PCH_DIR));
1476 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1477 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1478
1479 SmallString<128> OutputPath(OutputFile);
1480
1481 SM.getFileManager().makeAbsolutePath(OutputPath);
1482 StringRef origDir = llvm::sys::path::parent_path(OutputPath);
1483
1484 RecordData::value_type Record[] = {ORIGINAL_PCH_DIR};
1485 Stream.EmitRecordWithBlob(AbbrevCode, Record, origDir);
1486 }
1487
1488 std::set<const FileEntry *> AffectingModuleMaps;
1489 if (WritingModule) {
1490 AffectingModuleMaps =
1491 GetAllModuleMaps(PP.getHeaderSearchInfo(), WritingModule);
1492 }
1493
1494 WriteInputFiles(Context.SourceMgr,
1495 PP.getHeaderSearchInfo().getHeaderSearchOpts(),
1496 AffectingModuleMaps);
1497 Stream.ExitBlock();
1498}
1499
1500namespace {
1501
1502/// An input file.
1503struct InputFileEntry {
1504 const FileEntry *File;
1505 bool IsSystemFile;
1506 bool IsTransient;
1507 bool BufferOverridden;
1508 bool IsTopLevelModuleMap;
1509 uint32_t ContentHash[2];
1510};
1511
1512} // namespace
1513
1514void ASTWriter::WriteInputFiles(
1515 SourceManager &SourceMgr, HeaderSearchOptions &HSOpts,
1516 std::set<const FileEntry *> &AffectingModuleMaps) {
1517 using namespace llvm;
1518
1519 Stream.EnterSubblock(INPUT_FILES_BLOCK_ID, 4);
1520
1521 // Create input-file abbreviation.
1522 auto IFAbbrev = std::make_shared<BitCodeAbbrev>();
1523 IFAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE));
1524 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
1525 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 12)); // Size
1526 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // Modification time
1527 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Overridden
1528 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Transient
1529 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Module map
1530 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1531 unsigned IFAbbrevCode = Stream.EmitAbbrev(std::move(IFAbbrev));
1532
1533 // Create input file hash abbreviation.
1534 auto IFHAbbrev = std::make_shared<BitCodeAbbrev>();
1535 IFHAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE_HASH));
1536 IFHAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1537 IFHAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1538 unsigned IFHAbbrevCode = Stream.EmitAbbrev(std::move(IFHAbbrev));
1539
1540 // Get all ContentCache objects for files, sorted by whether the file is a
1541 // system one or not. System files go at the back, users files at the front.
1542 std::deque<InputFileEntry> SortedFiles;
1543 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size(); I != N; ++I) {
1544 // Get this source location entry.
1545 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
1546 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", 1546, __extension__
__PRETTY_FUNCTION__))
;
1547
1548 // We only care about file entries that were not overridden.
1549 if (!SLoc->isFile())
1550 continue;
1551 const SrcMgr::FileInfo &File = SLoc->getFile();
1552 const SrcMgr::ContentCache *Cache = &File.getContentCache();
1553 if (!Cache->OrigEntry)
1554 continue;
1555
1556 if (isModuleMap(File.getFileCharacteristic()) &&
1557 !isSystem(File.getFileCharacteristic()) &&
1558 !AffectingModuleMaps.empty() &&
1559 AffectingModuleMaps.find(Cache->OrigEntry) ==
1560 AffectingModuleMaps.end()) {
1561 SkippedModuleMaps.insert(Cache->OrigEntry);
1562 // Do not emit modulemaps that do not affect current module.
1563 continue;
1564 }
1565
1566 InputFileEntry Entry;
1567 Entry.File = Cache->OrigEntry;
1568 Entry.IsSystemFile = isSystem(File.getFileCharacteristic());
1569 Entry.IsTransient = Cache->IsTransient;
1570 Entry.BufferOverridden = Cache->BufferOverridden;
1571 Entry.IsTopLevelModuleMap = isModuleMap(File.getFileCharacteristic()) &&
1572 File.getIncludeLoc().isInvalid();
1573
1574 auto ContentHash = hash_code(-1);
1575 if (PP->getHeaderSearchInfo()
1576 .getHeaderSearchOpts()
1577 .ValidateASTInputFilesContent) {
1578 auto MemBuff = Cache->getBufferIfLoaded();
1579 if (MemBuff)
1580 ContentHash = hash_value(MemBuff->getBuffer());
1581 else
1582 // FIXME: The path should be taken from the FileEntryRef.
1583 PP->Diag(SourceLocation(), diag::err_module_unable_to_hash_content)
1584 << Entry.File->getName();
1585 }
1586 auto CH = llvm::APInt(64, ContentHash);
1587 Entry.ContentHash[0] =
1588 static_cast<uint32_t>(CH.getLoBits(32).getZExtValue());
1589 Entry.ContentHash[1] =
1590 static_cast<uint32_t>(CH.getHiBits(32).getZExtValue());
1591
1592 if (Entry.IsSystemFile)
1593 SortedFiles.push_back(Entry);
1594 else
1595 SortedFiles.push_front(Entry);
1596 }
1597
1598 unsigned UserFilesNum = 0;
1599 // Write out all of the input files.
1600 std::vector<uint64_t> InputFileOffsets;
1601 for (const auto &Entry : SortedFiles) {
1602 uint32_t &InputFileID = InputFileIDs[Entry.File];
1603 if (InputFileID != 0)
1604 continue; // already recorded this file.
1605
1606 // Record this entry's offset.
1607 InputFileOffsets.push_back(Stream.GetCurrentBitNo());
1608
1609 InputFileID = InputFileOffsets.size();
1610
1611 if (!Entry.IsSystemFile)
1612 ++UserFilesNum;
1613
1614 // Emit size/modification time for this file.
1615 // And whether this file was overridden.
1616 {
1617 RecordData::value_type Record[] = {
1618 INPUT_FILE,
1619 InputFileOffsets.size(),
1620 (uint64_t)Entry.File->getSize(),
1621 (uint64_t)getTimestampForOutput(Entry.File),
1622 Entry.BufferOverridden,
1623 Entry.IsTransient,
1624 Entry.IsTopLevelModuleMap};
1625
1626 // FIXME: The path should be taken from the FileEntryRef.
1627 EmitRecordWithPath(IFAbbrevCode, Record, Entry.File->getName());
1628 }
1629
1630 // Emit content hash for this file.
1631 {
1632 RecordData::value_type Record[] = {INPUT_FILE_HASH, Entry.ContentHash[0],
1633 Entry.ContentHash[1]};
1634 Stream.EmitRecordWithAbbrev(IFHAbbrevCode, Record);
1635 }
1636 }
1637
1638 Stream.ExitBlock();
1639
1640 // Create input file offsets abbreviation.
1641 auto OffsetsAbbrev = std::make_shared<BitCodeAbbrev>();
1642 OffsetsAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE_OFFSETS));
1643 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # input files
1644 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # non-system
1645 // input files
1646 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Array
1647 unsigned OffsetsAbbrevCode = Stream.EmitAbbrev(std::move(OffsetsAbbrev));
1648
1649 // Write input file offsets.
1650 RecordData::value_type Record[] = {INPUT_FILE_OFFSETS,
1651 InputFileOffsets.size(), UserFilesNum};
1652 Stream.EmitRecordWithBlob(OffsetsAbbrevCode, Record, bytes(InputFileOffsets));
1653}
1654
1655//===----------------------------------------------------------------------===//
1656// Source Manager Serialization
1657//===----------------------------------------------------------------------===//
1658
1659/// Create an abbreviation for the SLocEntry that refers to a
1660/// file.
1661static unsigned CreateSLocFileAbbrev(llvm::BitstreamWriter &Stream) {
1662 using namespace llvm;
1663
1664 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1665 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_FILE_ENTRY));
1666 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1667 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1668 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1669 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1670 // FileEntry fields.
1671 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Input File ID
1672 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumCreatedFIDs
1673 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 24)); // FirstDeclIndex
1674 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumDecls
1675 return Stream.EmitAbbrev(std::move(Abbrev));
1676}
1677
1678/// Create an abbreviation for the SLocEntry that refers to a
1679/// buffer.
1680static unsigned CreateSLocBufferAbbrev(llvm::BitstreamWriter &Stream) {
1681 using namespace llvm;
1682
1683 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1684 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_BUFFER_ENTRY));
1685 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1686 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1687 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1688 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1689 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Buffer name blob
1690 return Stream.EmitAbbrev(std::move(Abbrev));
1691}
1692
1693/// Create an abbreviation for the SLocEntry that refers to a
1694/// buffer's blob.
1695static unsigned CreateSLocBufferBlobAbbrev(llvm::BitstreamWriter &Stream,
1696 bool Compressed) {
1697 using namespace llvm;
1698
1699 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1700 Abbrev->Add(BitCodeAbbrevOp(Compressed ? SM_SLOC_BUFFER_BLOB_COMPRESSED
1701 : SM_SLOC_BUFFER_BLOB));
1702 if (Compressed)
1703 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Uncompressed size
1704 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Blob
1705 return Stream.EmitAbbrev(std::move(Abbrev));
1706}
1707
1708/// Create an abbreviation for the SLocEntry that refers to a macro
1709/// expansion.
1710static unsigned CreateSLocExpansionAbbrev(llvm::BitstreamWriter &Stream) {
1711 using namespace llvm;
1712
1713 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1714 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_EXPANSION_ENTRY));
1715 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1716 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Spelling location
1717 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Start location
1718 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // End location
1719 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Is token range
1720 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Token length
1721 return Stream.EmitAbbrev(std::move(Abbrev));
1722}
1723
1724/// Emit key length and data length as ULEB-encoded data, and return them as a
1725/// pair.
1726static std::pair<unsigned, unsigned>
1727emitULEBKeyDataLength(unsigned KeyLen, unsigned DataLen, raw_ostream &Out) {
1728 llvm::encodeULEB128(KeyLen, Out);
1729 llvm::encodeULEB128(DataLen, Out);
1730 return std::make_pair(KeyLen, DataLen);
1731}
1732
1733namespace {
1734
1735 // Trait used for the on-disk hash table of header search information.
1736 class HeaderFileInfoTrait {
1737 ASTWriter &Writer;
1738
1739 // Keep track of the framework names we've used during serialization.
1740 SmallString<128> FrameworkStringData;
1741 llvm::StringMap<unsigned> FrameworkNameOffset;
1742
1743 public:
1744 HeaderFileInfoTrait(ASTWriter &Writer) : Writer(Writer) {}
1745
1746 struct key_type {
1747 StringRef Filename;
1748 off_t Size;
1749 time_t ModTime;
1750 };
1751 using key_type_ref = const key_type &;
1752
1753 using UnresolvedModule =
1754 llvm::PointerIntPair<Module *, 2, ModuleMap::ModuleHeaderRole>;
1755
1756 struct data_type {
1757 const HeaderFileInfo &HFI;
1758 ArrayRef<ModuleMap::KnownHeader> KnownHeaders;
1759 UnresolvedModule Unresolved;
1760 };
1761 using data_type_ref = const data_type &;
1762
1763 using hash_value_type = unsigned;
1764 using offset_type = unsigned;
1765
1766 hash_value_type ComputeHash(key_type_ref key) {
1767 // The hash is based only on size/time of the file, so that the reader can
1768 // match even when symlinking or excess path elements ("foo/../", "../")
1769 // change the form of the name. However, complete path is still the key.
1770 return llvm::hash_combine(key.Size, key.ModTime);
1771 }
1772
1773 std::pair<unsigned, unsigned>
1774 EmitKeyDataLength(raw_ostream& Out, key_type_ref key, data_type_ref Data) {
1775 unsigned KeyLen = key.Filename.size() + 1 + 8 + 8;
1776 unsigned DataLen = 1 + 2 + 4 + 4;
1777 for (auto ModInfo : Data.KnownHeaders)
1778 if (Writer.getLocalOrImportedSubmoduleID(ModInfo.getModule()))
1779 DataLen += 4;
1780 if (Data.Unresolved.getPointer())
1781 DataLen += 4;
1782 return emitULEBKeyDataLength(KeyLen, DataLen, Out);
1783 }
1784
1785 void EmitKey(raw_ostream& Out, key_type_ref key, unsigned KeyLen) {
1786 using namespace llvm::support;
1787
1788 endian::Writer LE(Out, little);
1789 LE.write<uint64_t>(key.Size);
1790 KeyLen -= 8;
1791 LE.write<uint64_t>(key.ModTime);
1792 KeyLen -= 8;
1793 Out.write(key.Filename.data(), KeyLen);
1794 }
1795
1796 void EmitData(raw_ostream &Out, key_type_ref key,
1797 data_type_ref Data, unsigned DataLen) {
1798 using namespace llvm::support;
1799
1800 endian::Writer LE(Out, little);
1801 uint64_t Start = Out.tell(); (void)Start;
1802
1803 unsigned char Flags = (Data.HFI.isImport << 5)
1804 | (Data.HFI.isPragmaOnce << 4)
1805 | (Data.HFI.DirInfo << 1)
1806 | Data.HFI.IndexHeaderMapHeader;
1807 LE.write<uint8_t>(Flags);
1808 LE.write<uint16_t>(Data.HFI.NumIncludes);
1809
1810 if (!Data.HFI.ControllingMacro)
1811 LE.write<uint32_t>(Data.HFI.ControllingMacroID);
1812 else
1813 LE.write<uint32_t>(Writer.getIdentifierRef(Data.HFI.ControllingMacro));
1814
1815 unsigned Offset = 0;
1816 if (!Data.HFI.Framework.empty()) {
1817 // If this header refers into a framework, save the framework name.
1818 llvm::StringMap<unsigned>::iterator Pos
1819 = FrameworkNameOffset.find(Data.HFI.Framework);
1820 if (Pos == FrameworkNameOffset.end()) {
1821 Offset = FrameworkStringData.size() + 1;
1822 FrameworkStringData.append(Data.HFI.Framework);
1823 FrameworkStringData.push_back(0);
1824
1825 FrameworkNameOffset[Data.HFI.Framework] = Offset;
1826 } else
1827 Offset = Pos->second;
1828 }
1829 LE.write<uint32_t>(Offset);
1830
1831 auto EmitModule = [&](Module *M, ModuleMap::ModuleHeaderRole Role) {
1832 if (uint32_t ModID = Writer.getLocalOrImportedSubmoduleID(M)) {
1833 uint32_t Value = (ModID << 2) | (unsigned)Role;
1834 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", 1834, __extension__
__PRETTY_FUNCTION__))
;
1835 LE.write<uint32_t>(Value);
1836 }
1837 };
1838
1839 // FIXME: If the header is excluded, we should write out some
1840 // record of that fact.
1841 for (auto ModInfo : Data.KnownHeaders)
1842 EmitModule(ModInfo.getModule(), ModInfo.getRole());
1843 if (Data.Unresolved.getPointer())
1844 EmitModule(Data.Unresolved.getPointer(), Data.Unresolved.getInt());
1845
1846 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", 1846, __extension__
__PRETTY_FUNCTION__))
;
1847 }
1848
1849 const char *strings_begin() const { return FrameworkStringData.begin(); }
1850 const char *strings_end() const { return FrameworkStringData.end(); }
1851 };
1852
1853} // namespace
1854
1855/// Write the header search block for the list of files that
1856///
1857/// \param HS The header search structure to save.
1858void ASTWriter::WriteHeaderSearch(const HeaderSearch &HS) {
1859 HeaderFileInfoTrait GeneratorTrait(*this);
1860 llvm::OnDiskChainedHashTableGenerator<HeaderFileInfoTrait> Generator;
1861 SmallVector<const char *, 4> SavedStrings;
1862 unsigned NumHeaderSearchEntries = 0;
1863
1864 // Find all unresolved headers for the current module. We generally will
1865 // have resolved them before we get here, but not necessarily: we might be
1866 // compiling a preprocessed module, where there is no requirement for the
1867 // original files to exist any more.
1868 const HeaderFileInfo Empty; // So we can take a reference.
1869 if (WritingModule) {
1
Assuming field 'WritingModule' is non-null
2
Taking true branch
1870 llvm::SmallVector<Module *, 16> Worklist(1, WritingModule);
1871 while (!Worklist.empty()) {
3
Loop condition is true. Entering loop body
1872 Module *M = Worklist.pop_back_val();
1873 // We don't care about headers in unimportable submodules.
1874 if (M->isUnimportable())
4
Assuming the condition is false
5
Taking false branch
1875 continue;
1876
1877 // Map to disk files where possible, to pick up any missing stat
1878 // information. This also means we don't need to check the unresolved
1879 // headers list when emitting resolved headers in the first loop below.
1880 // FIXME: It'd be preferable to avoid doing this if we were given
1881 // sufficient stat information in the module map.
1882 HS.getModuleMap().resolveHeaderDirectives(M);
1883
1884 // If the file didn't exist, we can still create a module if we were given
1885 // enough information in the module map.
1886 for (auto U : M->MissingHeaders) {
6
Assuming '__begin3' is not equal to '__end3'
1887 // Check that we were given enough information to build a module
1888 // without this file existing on disk.
1889 if (!U.Size || (!U.ModTime && IncludeTimestamps)) {
7
Assuming the condition is false
8
Assuming the condition is false
1890 PP->Diag(U.FileNameLoc, diag::err_module_no_size_mtime_for_header)
1891 << WritingModule->getFullModuleName() << U.Size.hasValue()
1892 << U.FileName;
1893 continue;
1894 }
1895
1896 // Form the effective relative pathname for the file.
1897 SmallString<128> Filename(M->Directory->getName());
1898 llvm::sys::path::append(Filename, U.FileName);
1899 PreparePathForOutput(Filename);
1900
1901 StringRef FilenameDup = strdup(Filename.c_str());
9
Memory is allocated
10
Potential memory leak
1902 SavedStrings.push_back(FilenameDup.data());
1903
1904 HeaderFileInfoTrait::key_type Key = {
1905 FilenameDup, *U.Size, IncludeTimestamps ? *U.ModTime : 0
1906 };
1907 HeaderFileInfoTrait::data_type Data = {
1908 Empty, {}, {M, ModuleMap::headerKindToRole(U.Kind)}
1909 };
1910 // FIXME: Deal with cases where there are multiple unresolved header
1911 // directives in different submodules for the same header.
1912 Generator.insert(Key, Data, GeneratorTrait);
1913 ++NumHeaderSearchEntries;
1914 }
1915
1916 Worklist.append(M->submodule_begin(), M->submodule_end());
1917 }
1918 }
1919
1920 SmallVector<const FileEntry *, 16> FilesByUID;
1921 HS.getFileMgr().GetUniqueIDMapping(FilesByUID);
1922
1923 if (FilesByUID.size() > HS.header_file_size())
1924 FilesByUID.resize(HS.header_file_size());
1925
1926 for (unsigned UID = 0, LastUID = FilesByUID.size(); UID != LastUID; ++UID) {
1927 const FileEntry *File = FilesByUID[UID];
1928 if (!File)
1929 continue;
1930
1931 // Get the file info. This will load info from the external source if
1932 // necessary. Skip emitting this file if we have no information on it
1933 // as a header file (in which case HFI will be null) or if it hasn't
1934 // changed since it was loaded. Also skip it if it's for a modular header
1935 // from a different module; in that case, we rely on the module(s)
1936 // containing the header to provide this information.
1937 const HeaderFileInfo *HFI =
1938 HS.getExistingFileInfo(File, /*WantExternal*/!Chain);
1939 if (!HFI || (HFI->isModuleHeader && !HFI->isCompilingModuleHeader))
1940 continue;
1941
1942 // Massage the file path into an appropriate form.
1943 StringRef Filename = File->getName();
1944 SmallString<128> FilenameTmp(Filename);
1945 if (PreparePathForOutput(FilenameTmp)) {
1946 // If we performed any translation on the file name at all, we need to
1947 // save this string, since the generator will refer to it later.
1948 Filename = StringRef(strdup(FilenameTmp.c_str()));
1949 SavedStrings.push_back(Filename.data());
1950 }
1951
1952 HeaderFileInfoTrait::key_type Key = {
1953 Filename, File->getSize(), getTimestampForOutput(File)
1954 };
1955 HeaderFileInfoTrait::data_type Data = {
1956 *HFI, HS.getModuleMap().findResolvedModulesForHeader(File), {}
1957 };
1958 Generator.insert(Key, Data, GeneratorTrait);
1959 ++NumHeaderSearchEntries;
1960 }
1961
1962 // Create the on-disk hash table in a buffer.
1963 SmallString<4096> TableData;
1964 uint32_t BucketOffset;
1965 {
1966 using namespace llvm::support;
1967
1968 llvm::raw_svector_ostream Out(TableData);
1969 // Make sure that no bucket is at offset 0
1970 endian::write<uint32_t>(Out, 0, little);
1971 BucketOffset = Generator.Emit(Out, GeneratorTrait);
1972 }
1973
1974 // Create a blob abbreviation
1975 using namespace llvm;
1976
1977 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1978 Abbrev->Add(BitCodeAbbrevOp(HEADER_SEARCH_TABLE));
1979 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1980 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1981 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1982 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
1983 unsigned TableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
1984
1985 // Write the header search table
1986 RecordData::value_type Record[] = {HEADER_SEARCH_TABLE, BucketOffset,
1987 NumHeaderSearchEntries, TableData.size()};
1988 TableData.append(GeneratorTrait.strings_begin(),GeneratorTrait.strings_end());
1989 Stream.EmitRecordWithBlob(TableAbbrev, Record, TableData);
1990
1991 // Free all of the strings we had to duplicate.
1992 for (unsigned I = 0, N = SavedStrings.size(); I != N; ++I)
1993 free(const_cast<char *>(SavedStrings[I]));
1994}
1995
1996static void emitBlob(llvm::BitstreamWriter &Stream, StringRef Blob,
1997 unsigned SLocBufferBlobCompressedAbbrv,
1998 unsigned SLocBufferBlobAbbrv) {
1999 using RecordDataType = ASTWriter::RecordData::value_type;
2000
2001 // Compress the buffer if possible. We expect that almost all PCM
2002 // consumers will not want its contents.
2003 SmallString<0> CompressedBuffer;
2004 if (llvm::zlib::isAvailable()) {
2005 llvm::Error E = llvm::zlib::compress(Blob.drop_back(1), CompressedBuffer);
2006 if (!E) {
2007 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB_COMPRESSED,
2008 Blob.size() - 1};
2009 Stream.EmitRecordWithBlob(SLocBufferBlobCompressedAbbrv, Record,
2010 CompressedBuffer);
2011 return;
2012 }
2013 llvm::consumeError(std::move(E));
2014 }
2015
2016 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB};
2017 Stream.EmitRecordWithBlob(SLocBufferBlobAbbrv, Record, Blob);
2018}
2019
2020/// Writes the block containing the serialized form of the
2021/// source manager.
2022///
2023/// TODO: We should probably use an on-disk hash table (stored in a
2024/// blob), indexed based on the file name, so that we only create
2025/// entries for files that we actually need. In the common case (no
2026/// errors), we probably won't have to create file entries for any of
2027/// the files in the AST.
2028void ASTWriter::WriteSourceManagerBlock(SourceManager &SourceMgr,
2029 const Preprocessor &PP) {
2030 RecordData Record;
2031
2032 // Enter the source manager block.
2033 Stream.EnterSubblock(SOURCE_MANAGER_BLOCK_ID, 4);
2034 const uint64_t SourceManagerBlockOffset = Stream.GetCurrentBitNo();
2035
2036 // Abbreviations for the various kinds of source-location entries.
2037 unsigned SLocFileAbbrv = CreateSLocFileAbbrev(Stream);
2038 unsigned SLocBufferAbbrv = CreateSLocBufferAbbrev(Stream);
2039 unsigned SLocBufferBlobAbbrv = CreateSLocBufferBlobAbbrev(Stream, false);
2040 unsigned SLocBufferBlobCompressedAbbrv =
2041 CreateSLocBufferBlobAbbrev(Stream, true);
2042 unsigned SLocExpansionAbbrv = CreateSLocExpansionAbbrev(Stream);
2043
2044 // Write out the source location entry table. We skip the first
2045 // entry, which is always the same dummy entry.
2046 std::vector<uint32_t> SLocEntryOffsets;
2047 uint64_t SLocEntryOffsetsBase = Stream.GetCurrentBitNo();
2048 RecordData PreloadSLocs;
2049 SLocEntryOffsets.reserve(SourceMgr.local_sloc_entry_size() - 1);
2050 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size();
2051 I != N; ++I) {
2052 // Get this source location entry.
2053 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
2054 FileID FID = FileID::get(I);
2055 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", 2055, __extension__
__PRETTY_FUNCTION__))
;
2056
2057 // Record the offset of this source-location entry.
2058 uint64_t Offset = Stream.GetCurrentBitNo() - SLocEntryOffsetsBase;
2059 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", 2059, __extension__
__PRETTY_FUNCTION__))
;
2060 SLocEntryOffsets.push_back(Offset);
2061
2062 // Figure out which record code to use.
2063 unsigned Code;
2064 if (SLoc->isFile()) {
2065 const SrcMgr::ContentCache *Cache = &SLoc->getFile().getContentCache();
2066 if (Cache->OrigEntry) {
2067 Code = SM_SLOC_FILE_ENTRY;
2068 } else
2069 Code = SM_SLOC_BUFFER_ENTRY;
2070 } else
2071 Code = SM_SLOC_EXPANSION_ENTRY;
2072 Record.clear();
2073 Record.push_back(Code);
2074
2075 // Starting offset of this entry within this module, so skip the dummy.
2076 Record.push_back(SLoc->getOffset() - 2);
2077 if (SLoc->isFile()) {
2078 const SrcMgr::FileInfo &File = SLoc->getFile();
2079 const SrcMgr::ContentCache *Content = &File.getContentCache();
2080 if (Content->OrigEntry && !SkippedModuleMaps.empty() &&
2081 SkippedModuleMaps.find(Content->OrigEntry) !=
2082 SkippedModuleMaps.end()) {
2083 // Do not emit files that were not listed as inputs.
2084 continue;
2085 }
2086 AddSourceLocation(File.getIncludeLoc(), Record);
2087 Record.push_back(File.getFileCharacteristic()); // FIXME: stable encoding
2088 Record.push_back(File.hasLineDirectives());
2089
2090 bool EmitBlob = false;
2091 if (Content->OrigEntry) {
2092 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", 2093, __extension__
__PRETTY_FUNCTION__))
2093 "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", 2093, __extension__
__PRETTY_FUNCTION__))
;
2094
2095 // The source location entry is a file. Emit input file ID.
2096 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", 2096, __extension__
__PRETTY_FUNCTION__))
;
2097 Record.push_back(InputFileIDs[Content->OrigEntry]);
2098
2099 Record.push_back(File.NumCreatedFIDs);
2100
2101 FileDeclIDsTy::iterator FDI = FileDeclIDs.find(FID);
2102 if (FDI != FileDeclIDs.end()) {
2103 Record.push_back(FDI->second->FirstDeclIndex);
2104 Record.push_back(FDI->second->DeclIDs.size());
2105 } else {
2106 Record.push_back(0);
2107 Record.push_back(0);
2108 }
2109
2110 Stream.EmitRecordWithAbbrev(SLocFileAbbrv, Record);
2111
2112 if (Content->BufferOverridden || Content->IsTransient)
2113 EmitBlob = true;
2114 } else {
2115 // The source location entry is a buffer. The blob associated
2116 // with this entry contains the contents of the buffer.
2117
2118 // We add one to the size so that we capture the trailing NULL
2119 // that is required by llvm::MemoryBuffer::getMemBuffer (on
2120 // the reader side).
2121 llvm::Optional<llvm::MemoryBufferRef> Buffer =
2122 Content->getBufferOrNone(PP.getDiagnostics(), PP.getFileManager());
2123 StringRef Name = Buffer ? Buffer->getBufferIdentifier() : "";
2124 Stream.EmitRecordWithBlob(SLocBufferAbbrv, Record,
2125 StringRef(Name.data(), Name.size() + 1));
2126 EmitBlob = true;
2127
2128 if (Name == "<built-in>")
2129 PreloadSLocs.push_back(SLocEntryOffsets.size());
2130 }
2131
2132 if (EmitBlob) {
2133 // Include the implicit terminating null character in the on-disk buffer
2134 // if we're writing it uncompressed.
2135 llvm::Optional<llvm::MemoryBufferRef> Buffer =
2136 Content->getBufferOrNone(PP.getDiagnostics(), PP.getFileManager());
2137 if (!Buffer)
2138 Buffer = llvm::MemoryBufferRef("<<<INVALID BUFFER>>>", "");
2139 StringRef Blob(Buffer->getBufferStart(), Buffer->getBufferSize() + 1);
2140 emitBlob(Stream, Blob, SLocBufferBlobCompressedAbbrv,
2141 SLocBufferBlobAbbrv);
2142 }
2143 } else {
2144 // The source location entry is a macro expansion.
2145 const SrcMgr::ExpansionInfo &Expansion = SLoc->getExpansion();
2146 AddSourceLocation(Expansion.getSpellingLoc(), Record);
2147 AddSourceLocation(Expansion.getExpansionLocStart(), Record);
2148 AddSourceLocation(Expansion.isMacroArgExpansion()
2149 ? SourceLocation()
2150 : Expansion.getExpansionLocEnd(),
2151 Record);
2152 Record.push_back(Expansion.isExpansionTokenRange());
2153
2154 // Compute the token length for this macro expansion.
2155 SourceLocation::UIntTy NextOffset = SourceMgr.getNextLocalOffset();
2156 if (I + 1 != N)
2157 NextOffset = SourceMgr.getLocalSLocEntry(I + 1).getOffset();
2158 Record.push_back(NextOffset - SLoc->getOffset() - 1);
2159 Stream.EmitRecordWithAbbrev(SLocExpansionAbbrv, Record);
2160 }
2161 }
2162
2163 Stream.ExitBlock();
2164
2165 if (SLocEntryOffsets.empty())
2166 return;
2167
2168 // Write the source-location offsets table into the AST block. This
2169 // table is used for lazily loading source-location information.
2170 using namespace llvm;
2171
2172 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2173 Abbrev->Add(BitCodeAbbrevOp(SOURCE_LOCATION_OFFSETS));
2174 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs
2175 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // total size
2176 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // base offset
2177 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets
2178 unsigned SLocOffsetsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2179 {
2180 RecordData::value_type Record[] = {
2181 SOURCE_LOCATION_OFFSETS, SLocEntryOffsets.size(),
2182 SourceMgr.getNextLocalOffset() - 1 /* skip dummy */,
2183 SLocEntryOffsetsBase - SourceManagerBlockOffset};
2184 Stream.EmitRecordWithBlob(SLocOffsetsAbbrev, Record,
2185 bytes(SLocEntryOffsets));
2186 }
2187 // Write the source location entry preloads array, telling the AST
2188 // reader which source locations entries it should load eagerly.
2189 Stream.EmitRecord(SOURCE_LOCATION_PRELOADS, PreloadSLocs);
2190
2191 // Write the line table. It depends on remapping working, so it must come
2192 // after the source location offsets.
2193 if (SourceMgr.hasLineTable()) {
2194 LineTableInfo &LineTable = SourceMgr.getLineTable();
2195
2196 Record.clear();
2197
2198 // Emit the needed file names.
2199 llvm::DenseMap<int, int> FilenameMap;
2200 FilenameMap[-1] = -1; // For unspecified filenames.
2201 for (const auto &L : LineTable) {
2202 if (L.first.ID < 0)
2203 continue;
2204 for (auto &LE : L.second) {
2205 if (FilenameMap.insert(std::make_pair(LE.FilenameID,
2206 FilenameMap.size() - 1)).second)
2207 AddPath(LineTable.getFilename(LE.FilenameID), Record);
2208 }
2209 }
2210 Record.push_back(0);
2211
2212 // Emit the line entries
2213 for (const auto &L : LineTable) {
2214 // Only emit entries for local files.
2215 if (L.first.ID < 0)
2216 continue;
2217
2218 // Emit the file ID
2219 Record.push_back(L.first.ID);
2220
2221 // Emit the line entries
2222 Record.push_back(L.second.size());
2223 for (const auto &LE : L.second) {
2224 Record.push_back(LE.FileOffset);
2225 Record.push_back(LE.LineNo);
2226 Record.push_back(FilenameMap[LE.FilenameID]);
2227 Record.push_back((unsigned)LE.FileKind);
2228 Record.push_back(LE.IncludeOffset);
2229 }
2230 }
2231
2232 Stream.EmitRecord(SOURCE_MANAGER_LINE_TABLE, Record);
2233 }
2234}
2235
2236//===----------------------------------------------------------------------===//
2237// Preprocessor Serialization
2238//===----------------------------------------------------------------------===//
2239
2240static bool shouldIgnoreMacro(MacroDirective *MD, bool IsModule,
2241 const Preprocessor &PP) {
2242 if (MacroInfo *MI = MD->getMacroInfo())
2243 if (MI->isBuiltinMacro())
2244 return true;
2245
2246 if (IsModule) {
2247 SourceLocation Loc = MD->getLocation();
2248 if (Loc.isInvalid())
2249 return true;
2250 if (PP.getSourceManager().getFileID(Loc) == PP.getPredefinesFileID())
2251 return true;
2252 }
2253
2254 return false;
2255}
2256
2257/// Writes the block containing the serialized form of the
2258/// preprocessor.
2259void ASTWriter::WritePreprocessor(const Preprocessor &PP, bool IsModule) {
2260 uint64_t MacroOffsetsBase = Stream.GetCurrentBitNo();
2261
2262 PreprocessingRecord *PPRec = PP.getPreprocessingRecord();
2263 if (PPRec)
2264 WritePreprocessorDetail(*PPRec, MacroOffsetsBase);
2265
2266 RecordData Record;
2267 RecordData ModuleMacroRecord;
2268
2269 // If the preprocessor __COUNTER__ value has been bumped, remember it.
2270 if (PP.getCounterValue() != 0) {
2271 RecordData::value_type Record[] = {PP.getCounterValue()};
2272 Stream.EmitRecord(PP_COUNTER_VALUE, Record);
2273 }
2274
2275 if (PP.isRecordingPreamble() && PP.hasRecordedPreamble()) {
2276 assert(!IsModule)(static_cast <bool> (!IsModule) ? void (0) : __assert_fail
("!IsModule", "clang/lib/Serialization/ASTWriter.cpp", 2276,
__extension__ __PRETTY_FUNCTION__))
;
2277 auto SkipInfo = PP.getPreambleSkipInfo();
2278 if (SkipInfo.hasValue()) {
2279 Record.push_back(true);
2280 AddSourceLocation(SkipInfo->HashTokenLoc, Record);
2281 AddSourceLocation(SkipInfo->IfTokenLoc, Record);
2282 Record.push_back(SkipInfo->FoundNonSkipPortion);
2283 Record.push_back(SkipInfo->FoundElse);
2284 AddSourceLocation(SkipInfo->ElseLoc, Record);
2285 } else {
2286 Record.push_back(false);
2287 }
2288 for (const auto &Cond : PP.getPreambleConditionalStack()) {
2289 AddSourceLocation(Cond.IfLoc, Record);
2290 Record.push_back(Cond.WasSkipping);
2291 Record.push_back(Cond.FoundNonSkip);
2292 Record.push_back(Cond.FoundElse);
2293 }
2294 Stream.EmitRecord(PP_CONDITIONAL_STACK, Record);
2295 Record.clear();
2296 }
2297
2298 // Enter the preprocessor block.
2299 Stream.EnterSubblock(PREPROCESSOR_BLOCK_ID, 3);
2300
2301 // If the AST file contains __DATE__ or __TIME__ emit a warning about this.
2302 // FIXME: Include a location for the use, and say which one was used.
2303 if (PP.SawDateOrTime())
2304 PP.Diag(SourceLocation(), diag::warn_module_uses_date_time) << IsModule;
2305
2306 // Loop over all the macro directives that are live at the end of the file,
2307 // emitting each to the PP section.
2308
2309 // Construct the list of identifiers with macro directives that need to be
2310 // serialized.
2311 SmallVector<const IdentifierInfo *, 128> MacroIdentifiers;
2312 for (auto &Id : PP.getIdentifierTable())
2313 if (Id.second->hadMacroDefinition() &&
2314 (!Id.second->isFromAST() ||
2315 Id.second->hasChangedSinceDeserialization()))
2316 MacroIdentifiers.push_back(Id.second);
2317 // Sort the set of macro definitions that need to be serialized by the
2318 // name of the macro, to provide a stable ordering.
2319 llvm::sort(MacroIdentifiers, llvm::deref<std::less<>>());
2320
2321 // Emit the macro directives as a list and associate the offset with the
2322 // identifier they belong to.
2323 for (const IdentifierInfo *Name : MacroIdentifiers) {
2324 MacroDirective *MD = PP.getLocalMacroDirectiveHistory(Name);
2325 uint64_t StartOffset = Stream.GetCurrentBitNo() - MacroOffsetsBase;
2326 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", 2326, __extension__
__PRETTY_FUNCTION__))
;
2327
2328 // Emit the macro directives in reverse source order.
2329 for (; MD; MD = MD->getPrevious()) {
2330 // Once we hit an ignored macro, we're done: the rest of the chain
2331 // will all be ignored macros.
2332 if (shouldIgnoreMacro(MD, IsModule, PP))
2333 break;
2334
2335 AddSourceLocation(MD->getLocation(), Record);
2336 Record.push_back(MD->getKind());
2337 if (auto *DefMD = dyn_cast<DefMacroDirective>(MD)) {
2338 Record.push_back(getMacroRef(DefMD->getInfo(), Name));
2339 } else if (auto *VisMD = dyn_cast<VisibilityMacroDirective>(MD)) {
2340 Record.push_back(VisMD->isPublic());
2341 }
2342 }
2343
2344 // Write out any exported module macros.
2345 bool EmittedModuleMacros = false;
2346 // We write out exported module macros for PCH as well.
2347 auto Leafs = PP.getLeafModuleMacros(Name);
2348 SmallVector<ModuleMacro*, 8> Worklist(Leafs.begin(), Leafs.end());
2349 llvm::DenseMap<ModuleMacro*, unsigned> Visits;
2350 while (!Worklist.empty()) {
2351 auto *Macro = Worklist.pop_back_val();
2352
2353 // Emit a record indicating this submodule exports this macro.
2354 ModuleMacroRecord.push_back(
2355 getSubmoduleID(Macro->getOwningModule()));
2356 ModuleMacroRecord.push_back(getMacroRef(Macro->getMacroInfo(), Name));
2357 for (auto *M : Macro->overrides())
2358 ModuleMacroRecord.push_back(getSubmoduleID(M->getOwningModule()));
2359
2360 Stream.EmitRecord(PP_MODULE_MACRO, ModuleMacroRecord);
2361 ModuleMacroRecord.clear();
2362
2363 // Enqueue overridden macros once we've visited all their ancestors.
2364 for (auto *M : Macro->overrides())
2365 if (++Visits[M] == M->getNumOverridingMacros())
2366 Worklist.push_back(M);
2367
2368 EmittedModuleMacros = true;
2369 }
2370
2371 if (Record.empty() && !EmittedModuleMacros)
2372 continue;
2373
2374 IdentMacroDirectivesOffsetMap[Name] = StartOffset;
2375 Stream.EmitRecord(PP_MACRO_DIRECTIVE_HISTORY, Record);
2376 Record.clear();
2377 }
2378
2379 /// Offsets of each of the macros into the bitstream, indexed by
2380 /// the local macro ID
2381 ///
2382 /// For each identifier that is associated with a macro, this map
2383 /// provides the offset into the bitstream where that macro is
2384 /// defined.
2385 std::vector<uint32_t> MacroOffsets;
2386
2387 for (unsigned I = 0, N = MacroInfosToEmit.size(); I != N; ++I) {
2388 const IdentifierInfo *Name = MacroInfosToEmit[I].Name;
2389 MacroInfo *MI = MacroInfosToEmit[I].MI;
2390 MacroID ID = MacroInfosToEmit[I].ID;
2391
2392 if (ID < FirstMacroID) {
2393 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", 2393, __extension__
__PRETTY_FUNCTION__))
;
2394 continue;
2395 }
2396
2397 // Record the local offset of this macro.
2398 unsigned Index = ID - FirstMacroID;
2399 if (Index >= MacroOffsets.size())
2400 MacroOffsets.resize(Index + 1);
2401
2402 uint64_t Offset = Stream.GetCurrentBitNo() - MacroOffsetsBase;
2403 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", 2403, __extension__
__PRETTY_FUNCTION__))
;
2404 MacroOffsets[Index] = Offset;
2405
2406 AddIdentifierRef(Name, Record);
2407 AddSourceLocation(MI->getDefinitionLoc(), Record);
2408 AddSourceLocation(MI->getDefinitionEndLoc(), Record);
2409 Record.push_back(MI->isUsed());
2410 Record.push_back(MI->isUsedForHeaderGuard());
2411 unsigned Code;
2412 if (MI->isObjectLike()) {
2413 Code = PP_MACRO_OBJECT_LIKE;
2414 } else {
2415 Code = PP_MACRO_FUNCTION_LIKE;
2416
2417 Record.push_back(MI->isC99Varargs());
2418 Record.push_back(MI->isGNUVarargs());
2419 Record.push_back(MI->hasCommaPasting());
2420 Record.push_back(MI->getNumParams());
2421 for (const IdentifierInfo *Param : MI->params())
2422 AddIdentifierRef(Param, Record);
2423 }
2424
2425 // If we have a detailed preprocessing record, record the macro definition
2426 // ID that corresponds to this macro.
2427 if (PPRec)
2428 Record.push_back(MacroDefinitions[PPRec->findMacroDefinition(MI)]);
2429
2430 Stream.EmitRecord(Code, Record);
2431 Record.clear();
2432
2433 // Emit the tokens array.
2434 for (unsigned TokNo = 0, e = MI->getNumTokens(); TokNo != e; ++TokNo) {
2435 // Note that we know that the preprocessor does not have any annotation
2436 // tokens in it because they are created by the parser, and thus can't
2437 // be in a macro definition.
2438 const Token &Tok = MI->getReplacementToken(TokNo);
2439 AddToken(Tok, Record);
2440 Stream.EmitRecord(PP_TOKEN, Record);
2441 Record.clear();
2442 }
2443 ++NumMacros;
2444 }
2445
2446 Stream.ExitBlock();
2447
2448 // Write the offsets table for macro IDs.
2449 using namespace llvm;
2450
2451 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2452 Abbrev->Add(BitCodeAbbrevOp(MACRO_OFFSET));
2453 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of macros
2454 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
2455 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // base offset
2456 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2457
2458 unsigned MacroOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2459 {
2460 RecordData::value_type Record[] = {MACRO_OFFSET, MacroOffsets.size(),
2461 FirstMacroID - NUM_PREDEF_MACRO_IDS,
2462 MacroOffsetsBase - ASTBlockStartOffset};
2463 Stream.EmitRecordWithBlob(MacroOffsetAbbrev, Record, bytes(MacroOffsets));
2464 }
2465}
2466
2467void ASTWriter::WritePreprocessorDetail(PreprocessingRecord &PPRec,
2468 uint64_t MacroOffsetsBase) {
2469 if (PPRec.local_begin() == PPRec.local_end())
2470 return;
2471
2472 SmallVector<PPEntityOffset, 64> PreprocessedEntityOffsets;
2473
2474 // Enter the preprocessor block.
2475 Stream.EnterSubblock(PREPROCESSOR_DETAIL_BLOCK_ID, 3);
2476
2477 // If the preprocessor has a preprocessing record, emit it.
2478 unsigned NumPreprocessingRecords = 0;
2479 using namespace llvm;
2480
2481 // Set up the abbreviation for
2482 unsigned InclusionAbbrev = 0;
2483 {
2484 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2485 Abbrev->Add(BitCodeAbbrevOp(PPD_INCLUSION_DIRECTIVE));
2486 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // filename length
2487 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // in quotes
2488 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // kind
2489 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // imported module
2490 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2491 InclusionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2492 }
2493
2494 unsigned FirstPreprocessorEntityID
2495 = (Chain ? PPRec.getNumLoadedPreprocessedEntities() : 0)
2496 + NUM_PREDEF_PP_ENTITY_IDS;
2497 unsigned NextPreprocessorEntityID = FirstPreprocessorEntityID;
2498 RecordData Record;
2499 for (PreprocessingRecord::iterator E = PPRec.local_begin(),
2500 EEnd = PPRec.local_end();
2501 E != EEnd;
2502 (void)++E, ++NumPreprocessingRecords, ++NextPreprocessorEntityID) {
2503 Record.clear();
2504
2505 uint64_t Offset = Stream.GetCurrentBitNo() - MacroOffsetsBase;
2506 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", 2506, __extension__
__PRETTY_FUNCTION__))
;
2507 PreprocessedEntityOffsets.push_back(
2508 PPEntityOffset((*E)->getSourceRange(), Offset));
2509
2510 if (auto *MD = dyn_cast<MacroDefinitionRecord>(*E)) {
2511 // Record this macro definition's ID.
2512 MacroDefinitions[MD] = NextPreprocessorEntityID;
2513
2514 AddIdentifierRef(MD->getName(), Record);
2515 Stream.EmitRecord(PPD_MACRO_DEFINITION, Record);
2516 continue;
2517 }
2518
2519 if (auto *ME = dyn_cast<MacroExpansion>(*E)) {
2520 Record.push_back(ME->isBuiltinMacro());
2521 if (ME->isBuiltinMacro())
2522 AddIdentifierRef(ME->getName(), Record);
2523 else
2524 Record.push_back(MacroDefinitions[ME->getDefinition()]);
2525 Stream.EmitRecord(PPD_MACRO_EXPANSION, Record);
2526 continue;
2527 }
2528
2529 if (auto *ID = dyn_cast<InclusionDirective>(*E)) {
2530 Record.push_back(PPD_INCLUSION_DIRECTIVE);
2531 Record.push_back(ID->getFileName().size());
2532 Record.push_back(ID->wasInQuotes());
2533 Record.push_back(static_cast<unsigned>(ID->getKind()));
2534 Record.push_back(ID->importedModule());
2535 SmallString<64> Buffer;
2536 Buffer += ID->getFileName();
2537 // Check that the FileEntry is not null because it was not resolved and
2538 // we create a PCH even with compiler errors.
2539 if (ID->getFile())
2540 Buffer += ID->getFile()->getName();
2541 Stream.EmitRecordWithBlob(InclusionAbbrev, Record, Buffer);
2542 continue;
2543 }
2544
2545 llvm_unreachable("Unhandled PreprocessedEntity in ASTWriter")::llvm::llvm_unreachable_internal("Unhandled PreprocessedEntity in ASTWriter"
, "clang/lib/Serialization/ASTWriter.cpp", 2545)
;
2546 }
2547 Stream.ExitBlock();
2548
2549 // Write the offsets table for the preprocessing record.
2550 if (NumPreprocessingRecords > 0) {
2551 assert(PreprocessedEntityOffsets.size() == NumPreprocessingRecords)(static_cast <bool> (PreprocessedEntityOffsets.size() ==
NumPreprocessingRecords) ? void (0) : __assert_fail ("PreprocessedEntityOffsets.size() == NumPreprocessingRecords"
, "clang/lib/Serialization/ASTWriter.cpp", 2551, __extension__
__PRETTY_FUNCTION__))
;
2552
2553 // Write the offsets table for identifier IDs.
2554 using namespace llvm;
2555
2556 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2557 Abbrev->Add(BitCodeAbbrevOp(PPD_ENTITIES_OFFSETS));
2558 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first pp entity
2559 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2560 unsigned PPEOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2561
2562 RecordData::value_type Record[] = {PPD_ENTITIES_OFFSETS,
2563 FirstPreprocessorEntityID -
2564 NUM_PREDEF_PP_ENTITY_IDS};
2565 Stream.EmitRecordWithBlob(PPEOffsetAbbrev, Record,
2566 bytes(PreprocessedEntityOffsets));
2567 }
2568
2569 // Write the skipped region table for the preprocessing record.
2570 ArrayRef<SourceRange> SkippedRanges = PPRec.getSkippedRanges();
2571 if (SkippedRanges.size() > 0) {
2572 std::vector<PPSkippedRange> SerializedSkippedRanges;
2573 SerializedSkippedRanges.reserve(SkippedRanges.size());
2574 for (auto const& Range : SkippedRanges)
2575 SerializedSkippedRanges.emplace_back(Range);
2576
2577 using namespace llvm;
2578 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2579 Abbrev->Add(BitCodeAbbrevOp(PPD_SKIPPED_RANGES));
2580 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2581 unsigned PPESkippedRangeAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2582
2583 Record.clear();
2584 Record.push_back(PPD_SKIPPED_RANGES);
2585 Stream.EmitRecordWithBlob(PPESkippedRangeAbbrev, Record,
2586 bytes(SerializedSkippedRanges));
2587 }
2588}
2589
2590unsigned ASTWriter::getLocalOrImportedSubmoduleID(const Module *Mod) {
2591 if (!Mod)
2592 return 0;
2593
2594 auto Known = SubmoduleIDs.find(Mod);
2595 if (Known != SubmoduleIDs.end())
2596 return Known->second;
2597
2598 auto *Top = Mod->getTopLevelModule();
2599 if (Top != WritingModule &&
2600 (getLangOpts().CompilingPCH ||
2601 !Top->fullModuleNameIs(StringRef(getLangOpts().CurrentModule))))
2602 return 0;
2603
2604 return SubmoduleIDs[Mod] = NextSubmoduleID++;
2605}
2606
2607unsigned ASTWriter::getSubmoduleID(Module *Mod) {
2608 // FIXME: This can easily happen, if we have a reference to a submodule that
2609 // did not result in us loading a module file for that submodule. For
2610 // instance, a cross-top-level-module 'conflict' declaration will hit this.
2611 unsigned ID = getLocalOrImportedSubmoduleID(Mod);
2612 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", 2613, __extension__
__PRETTY_FUNCTION__))
2613 "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", 2613, __extension__
__PRETTY_FUNCTION__))
;
2614 return ID;
2615}
2616
2617/// Compute the number of modules within the given tree (including the
2618/// given module).
2619static unsigned getNumberOfModules(Module *Mod) {
2620 unsigned ChildModules = 0;
2621 for (auto Sub = Mod->submodule_begin(), SubEnd = Mod->submodule_end();
2622 Sub != SubEnd; ++Sub)
2623 ChildModules += getNumberOfModules(*Sub);
2624
2625 return ChildModules + 1;
2626}
2627
2628void ASTWriter::WriteSubmodules(Module *WritingModule) {
2629 // Enter the submodule description block.
2630 Stream.EnterSubblock(SUBMODULE_BLOCK_ID, /*bits for abbreviations*/5);
2631
2632 // Write the abbreviations needed for the submodules block.
2633 using namespace llvm;
2634
2635 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2636 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_DEFINITION));
2637 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
2638 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Parent
2639 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Kind
2640 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2641 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExplicit
2642 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsSystem
2643 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExternC
2644 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferSubmodules...
2645 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExplicit...
2646 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExportWild...
2647 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ConfigMacrosExh...
2648 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModuleMapIsPriv...
2649 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2650 unsigned DefinitionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2651
2652 Abbrev = std::make_shared<BitCodeAbbrev>();
2653 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_HEADER));
2654 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2655 unsigned UmbrellaAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2656
2657 Abbrev = std::make_shared<BitCodeAbbrev>();
2658 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_HEADER));
2659 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2660 unsigned HeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2661
2662 Abbrev = std::make_shared<BitCodeAbbrev>();
2663 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TOPHEADER));
2664 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2665 unsigned TopHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2666
2667 Abbrev = std::make_shared<BitCodeAbbrev>();
2668 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_DIR));
2669 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2670 unsigned UmbrellaDirAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2671
2672 Abbrev = std::make_shared<BitCodeAbbrev>();
2673 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_REQUIRES));
2674 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // State
2675 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Feature
2676 unsigned RequiresAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2677
2678 Abbrev = std::make_shared<BitCodeAbbrev>();
2679 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXCLUDED_HEADER));
2680 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2681 unsigned ExcludedHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2682
2683 Abbrev = std::make_shared<BitCodeAbbrev>();
2684 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TEXTUAL_HEADER));
2685 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2686 unsigned TextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2687
2688 Abbrev = std::make_shared<BitCodeAbbrev>();
2689 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_HEADER));
2690 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2691 unsigned PrivateHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2692
2693 Abbrev = std::make_shared<BitCodeAbbrev>();
2694 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_TEXTUAL_HEADER));
2695 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2696 unsigned PrivateTextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2697
2698 Abbrev = std::make_shared<BitCodeAbbrev>();
2699 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_LINK_LIBRARY));
2700 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2701 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2702 unsigned LinkLibraryAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2703
2704 Abbrev = std::make_shared<BitCodeAbbrev>();
2705 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFIG_MACRO));
2706 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2707 unsigned ConfigMacroAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2708
2709 Abbrev = std::make_shared<BitCodeAbbrev>();
2710 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFLICT));
2711 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Other module
2712 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Message
2713 unsigned ConflictAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2714
2715 Abbrev = std::make_shared<BitCodeAbbrev>();
2716 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXPORT_AS));
2717 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2718 unsigned ExportAsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2719
2720 // Write the submodule metadata block.
2721 RecordData::value_type Record[] = {
2722 getNumberOfModules(WritingModule),
2723 FirstSubmoduleID - NUM_PREDEF_SUBMODULE_IDS};
2724 Stream.EmitRecord(SUBMODULE_METADATA, Record);
2725
2726 // Write all of the submodules.
2727 std::queue<Module *> Q;
2728 Q.push(WritingModule);
2729 while (!Q.empty()) {
2730 Module *Mod = Q.front();
2731 Q.pop();
2732 unsigned ID = getSubmoduleID(Mod);
2733
2734 uint64_t ParentID = 0;
2735 if (Mod->Parent) {
2736 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", 2736, __extension__
__PRETTY_FUNCTION__))
;
2737 ParentID = SubmoduleIDs[Mod->Parent];
2738 }
2739
2740 // Emit the definition of the block.
2741 {
2742 RecordData::value_type Record[] = {SUBMODULE_DEFINITION,
2743 ID,
2744 ParentID,
2745 (RecordData::value_type)Mod->Kind,
2746 Mod->IsFramework,
2747 Mod->IsExplicit,
2748 Mod->IsSystem,
2749 Mod->IsExternC,
2750 Mod->InferSubmodules,
2751 Mod->InferExplicitSubmodules,
2752 Mod->InferExportWildcard,
2753 Mod->ConfigMacrosExhaustive,
2754 Mod->ModuleMapIsPrivate};
2755 Stream.EmitRecordWithBlob(DefinitionAbbrev, Record, Mod->Name);
2756 }
2757
2758 // Emit the requirements.
2759 for (const auto &R : Mod->Requirements) {
2760 RecordData::value_type Record[] = {SUBMODULE_REQUIRES, R.second};
2761 Stream.EmitRecordWithBlob(RequiresAbbrev, Record, R.first);
2762 }
2763
2764 // Emit the umbrella header, if there is one.
2765 if (auto UmbrellaHeader = Mod->getUmbrellaHeader()) {
2766 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_HEADER};
2767 Stream.EmitRecordWithBlob(UmbrellaAbbrev, Record,
2768 UmbrellaHeader.NameAsWritten);
2769 } else if (auto UmbrellaDir = Mod->getUmbrellaDir()) {
2770 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_DIR};
2771 Stream.EmitRecordWithBlob(UmbrellaDirAbbrev, Record,
2772 UmbrellaDir.NameAsWritten);
2773 }
2774
2775 // Emit the headers.
2776 struct {
2777 unsigned RecordKind;
2778 unsigned Abbrev;
2779 Module::HeaderKind HeaderKind;
2780 } HeaderLists[] = {
2781 {SUBMODULE_HEADER, HeaderAbbrev, Module::HK_Normal},
2782 {SUBMODULE_TEXTUAL_HEADER, TextualHeaderAbbrev, Module::HK_Textual},
2783 {SUBMODULE_PRIVATE_HEADER, PrivateHeaderAbbrev, Module::HK_Private},
2784 {SUBMODULE_PRIVATE_TEXTUAL_HEADER, PrivateTextualHeaderAbbrev,
2785 Module::HK_PrivateTextual},
2786 {SUBMODULE_EXCLUDED_HEADER, ExcludedHeaderAbbrev, Module::HK_Excluded}
2787 };
2788 for (auto &HL : HeaderLists) {
2789 RecordData::value_type Record[] = {HL.RecordKind};
2790 for (auto &H : Mod->Headers[HL.HeaderKind])
2791 Stream.EmitRecordWithBlob(HL.Abbrev, Record, H.NameAsWritten);
2792 }
2793
2794 // Emit the top headers.
2795 {
2796 auto TopHeaders = Mod->getTopHeaders(PP->getFileManager());
2797 RecordData::value_type Record[] = {SUBMODULE_TOPHEADER};
2798 for (auto *H : TopHeaders)
2799 Stream.EmitRecordWithBlob(TopHeaderAbbrev, Record, H->getName());
2800 }
2801
2802 // Emit the imports.
2803 if (!Mod->Imports.empty()) {
2804 RecordData Record;
2805 for (auto *I : Mod->Imports)
2806 Record.push_back(getSubmoduleID(I));
2807 Stream.EmitRecord(SUBMODULE_IMPORTS, Record);
2808 }
2809
2810 // Emit the exports.
2811 if (!Mod->Exports.empty()) {
2812 RecordData Record;
2813 for (const auto &E : Mod->Exports) {
2814 // FIXME: This may fail; we don't require that all exported modules
2815 // are local or imported.
2816 Record.push_back(getSubmoduleID(E.getPointer()));
2817 Record.push_back(E.getInt());
2818 }
2819 Stream.EmitRecord(SUBMODULE_EXPORTS, Record);
2820 }
2821
2822 //FIXME: How do we emit the 'use'd modules? They may not be submodules.
2823 // Might be unnecessary as use declarations are only used to build the
2824 // module itself.
2825
2826 // Emit the link libraries.
2827 for (const auto &LL : Mod->LinkLibraries) {
2828 RecordData::value_type Record[] = {SUBMODULE_LINK_LIBRARY,
2829 LL.IsFramework};
2830 Stream.EmitRecordWithBlob(LinkLibraryAbbrev, Record, LL.Library);
2831 }
2832
2833 // Emit the conflicts.
2834 for (const auto &C : Mod->Conflicts) {
2835 // FIXME: This may fail; we don't require that all conflicting modules
2836 // are local or imported.
2837 RecordData::value_type Record[] = {SUBMODULE_CONFLICT,
2838 getSubmoduleID(C.Other)};
2839 Stream.EmitRecordWithBlob(ConflictAbbrev, Record, C.Message);
2840 }
2841
2842 // Emit the configuration macros.
2843 for (const auto &CM : Mod->ConfigMacros) {
2844 RecordData::value_type Record[] = {SUBMODULE_CONFIG_MACRO};
2845 Stream.EmitRecordWithBlob(ConfigMacroAbbrev, Record, CM);
2846 }
2847
2848 // Emit the initializers, if any.
2849 RecordData Inits;
2850 for (Decl *D : Context->getModuleInitializers(Mod))
2851 Inits.push_back(GetDeclRef(D));
2852 if (!Inits.empty())
2853 Stream.EmitRecord(SUBMODULE_INITIALIZERS, Inits);
2854
2855 // Emit the name of the re-exported module, if any.
2856 if (!Mod->ExportAsModule.empty()) {
2857 RecordData::value_type Record[] = {SUBMODULE_EXPORT_AS};
2858 Stream.EmitRecordWithBlob(ExportAsAbbrev, Record, Mod->ExportAsModule);
2859 }
2860
2861 // Queue up the submodules of this module.
2862 for (auto *M : Mod->submodules())
2863 Q.push(M);
2864 }
2865
2866 Stream.ExitBlock();
2867
2868 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", 2871, __extension__
__PRETTY_FUNCTION__))
2869 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", 2871, __extension__
__PRETTY_FUNCTION__))
2870 "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", 2871, __extension__
__PRETTY_FUNCTION__))
2871 "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", 2871, __extension__
__PRETTY_FUNCTION__))
;
2872}
2873
2874void ASTWriter::WritePragmaDiagnosticMappings(const DiagnosticsEngine &Diag,
2875 bool isModule) {
2876 llvm::SmallDenseMap<const DiagnosticsEngine::DiagState *, unsigned, 64>
2877 DiagStateIDMap;
2878 unsigned CurrID = 0;
2879 RecordData Record;
2880
2881 auto EncodeDiagStateFlags =
2882 [](const DiagnosticsEngine::DiagState *DS) -> unsigned {
2883 unsigned Result = (unsigned)DS->ExtBehavior;
2884 for (unsigned Val :
2885 {(unsigned)DS->IgnoreAllWarnings, (unsigned)DS->EnableAllWarnings,
2886 (unsigned)DS->WarningsAsErrors, (unsigned)DS->ErrorsAsFatal,
2887 (unsigned)DS->SuppressSystemWarnings})
2888 Result = (Result << 1) | Val;
2889 return Result;
2890 };
2891
2892 unsigned Flags = EncodeDiagStateFlags(Diag.DiagStatesByLoc.FirstDiagState);
2893 Record.push_back(Flags);
2894
2895 auto AddDiagState = [&](const DiagnosticsEngine::DiagState *State,
2896 bool IncludeNonPragmaStates) {
2897 // Ensure that the diagnostic state wasn't modified since it was created.
2898 // We will not correctly round-trip this information otherwise.
2899 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", 2900, __extension__
__PRETTY_FUNCTION__))
2900 "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", 2900, __extension__
__PRETTY_FUNCTION__))
;
2901
2902 unsigned &DiagStateID = DiagStateIDMap[State];
2903 Record.push_back(DiagStateID);
2904
2905 if (DiagStateID == 0) {
2906 DiagStateID = ++CurrID;
2907
2908 // Add a placeholder for the number of mappings.
2909 auto SizeIdx = Record.size();
2910 Record.emplace_back();
2911 for (const auto &I : *State) {
2912 if (I.second.isPragma() || IncludeNonPragmaStates) {
2913 Record.push_back(I.first);
2914 Record.push_back(I.second.serialize());
2915 }
2916 }
2917 // Update the placeholder.
2918 Record[SizeIdx] = (Record.size() - SizeIdx) / 2;
2919 }
2920 };
2921
2922 AddDiagState(Diag.DiagStatesByLoc.FirstDiagState, isModule);
2923
2924 // Reserve a spot for the number of locations with state transitions.
2925 auto NumLocationsIdx = Record.size();
2926 Record.emplace_back();
2927
2928 // Emit the state transitions.
2929 unsigned NumLocations = 0;
2930 for (auto &FileIDAndFile : Diag.DiagStatesByLoc.Files) {
2931 if (!FileIDAndFile.first.isValid() ||
2932 !FileIDAndFile.second.HasLocalTransitions)
2933 continue;
2934 ++NumLocations;
2935
2936 SourceLocation Loc = Diag.SourceMgr->getComposedLoc(FileIDAndFile.first, 0);
2937 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", 2937, __extension__
__PRETTY_FUNCTION__))
;
2938 AddSourceLocation(Loc, Record);
2939
2940 Record.push_back(FileIDAndFile.second.StateTransitions.size());
2941 for (auto &StatePoint : FileIDAndFile.second.StateTransitions) {
2942 Record.push_back(StatePoint.Offset);
2943 AddDiagState(StatePoint.State, false);
2944 }
2945 }
2946
2947 // Backpatch the number of locations.
2948 Record[NumLocationsIdx] = NumLocations;
2949
2950 // Emit CurDiagStateLoc. Do it last in order to match source order.
2951 //
2952 // This also protects against a hypothetical corner case with simulating
2953 // -Werror settings for implicit modules in the ASTReader, where reading
2954 // CurDiagState out of context could change whether warning pragmas are
2955 // treated as errors.
2956 AddSourceLocation(Diag.DiagStatesByLoc.CurDiagStateLoc, Record);
2957 AddDiagState(Diag.DiagStatesByLoc.CurDiagState, false);
2958
2959 Stream.EmitRecord(DIAG_PRAGMA_MAPPINGS, Record);
2960}
2961
2962//===----------------------------------------------------------------------===//
2963// Type Serialization
2964//===----------------------------------------------------------------------===//
2965
2966/// Write the representation of a type to the AST stream.
2967void ASTWriter::WriteType(QualType T) {
2968 TypeIdx &IdxRef = TypeIdxs[T];
2969 if (IdxRef.getIndex() == 0) // we haven't seen this type before.
2970 IdxRef = TypeIdx(NextTypeID++);
2971 TypeIdx Idx = IdxRef;
2972
2973 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", 2973, __extension__
__PRETTY_FUNCTION__))
;
2974
2975 // Emit the type's representation.
2976 uint64_t Offset = ASTTypeWriter(*this).write(T) - DeclTypesBlockStartOffset;
2977
2978 // Record the offset for this type.
2979 unsigned Index = Idx.getIndex() - FirstTypeID;
2980 if (TypeOffsets.size() == Index)
2981 TypeOffsets.emplace_back(Offset);
2982 else if (TypeOffsets.size() < Index) {
2983 TypeOffsets.resize(Index + 1);
2984 TypeOffsets[Index].setBitOffset(Offset);
2985 } else {
2986 llvm_unreachable("Types emitted in wrong order")::llvm::llvm_unreachable_internal("Types emitted in wrong order"
, "clang/lib/Serialization/ASTWriter.cpp", 2986)
;
2987 }
2988}
2989
2990//===----------------------------------------------------------------------===//
2991// Declaration Serialization
2992//===----------------------------------------------------------------------===//
2993
2994/// Write the block containing all of the declaration IDs
2995/// lexically declared within the given DeclContext.
2996///
2997/// \returns the offset of the DECL_CONTEXT_LEXICAL block within the
2998/// bitstream, or 0 if no block was written.
2999uint64_t ASTWriter::WriteDeclContextLexicalBlock(ASTContext &Context,
3000 DeclContext *DC) {
3001 if (DC->decls_empty())
3002 return 0;
3003
3004 uint64_t Offset = Stream.GetCurrentBitNo();
3005 SmallVector<uint32_t, 128> KindDeclPairs;
3006 for (const auto *D : DC->decls()) {
3007 KindDeclPairs.push_back(D->getKind());
3008 KindDeclPairs.push_back(GetDeclRef(D));
3009 }
3010
3011 ++NumLexicalDeclContexts;
3012 RecordData::value_type Record[] = {DECL_CONTEXT_LEXICAL};
3013 Stream.EmitRecordWithBlob(DeclContextLexicalAbbrev, Record,
3014 bytes(KindDeclPairs));
3015 return Offset;
3016}
3017
3018void ASTWriter::WriteTypeDeclOffsets() {
3019 using namespace llvm;
3020
3021 // Write the type offsets array
3022 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3023 Abbrev->Add(BitCodeAbbrevOp(TYPE_OFFSET));
3024 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of types
3025 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base type index
3026 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // types block
3027 unsigned TypeOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3028 {
3029 RecordData::value_type Record[] = {TYPE_OFFSET, TypeOffsets.size(),
3030 FirstTypeID - NUM_PREDEF_TYPE_IDS};
3031 Stream.EmitRecordWithBlob(TypeOffsetAbbrev, Record, bytes(TypeOffsets));
3032 }
3033
3034 // Write the declaration offsets array
3035 Abbrev = std::make_shared<BitCodeAbbrev>();
3036 Abbrev->Add(BitCodeAbbrevOp(DECL_OFFSET));
3037 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of declarations
3038 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base decl ID
3039 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // declarations block
3040 unsigned DeclOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3041 {
3042 RecordData::value_type Record[] = {DECL_OFFSET, DeclOffsets.size(),
3043 FirstDeclID - NUM_PREDEF_DECL_IDS};
3044 Stream.EmitRecordWithBlob(DeclOffsetAbbrev, Record, bytes(DeclOffsets));
3045 }
3046}
3047
3048void ASTWriter::WriteFileDeclIDsMap() {
3049 using namespace llvm;
3050
3051 SmallVector<std::pair<FileID, DeclIDInFileInfo *>, 64> SortedFileDeclIDs;
3052 SortedFileDeclIDs.reserve(FileDeclIDs.size());
3053 for (const auto &P : FileDeclIDs)
3054 SortedFileDeclIDs.push_back(std::make_pair(P.first, P.second.get()));
3055 llvm::sort(SortedFileDeclIDs, llvm::less_first());
3056
3057 // Join the vectors of DeclIDs from all files.
3058 SmallVector<DeclID, 256> FileGroupedDeclIDs;
3059 for (auto &FileDeclEntry : SortedFileDeclIDs) {
3060 DeclIDInFileInfo &Info = *FileDeclEntry.second;
3061 Info.FirstDeclIndex = FileGroupedDeclIDs.size();
3062 for (auto &LocDeclEntry : Info.DeclIDs)
3063 FileGroupedDeclIDs.push_back(LocDeclEntry.second);
3064 }
3065
3066 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3067 Abbrev->Add(BitCodeAbbrevOp(FILE_SORTED_DECLS));
3068 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3069 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3070 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
3071 RecordData::value_type Record[] = {FILE_SORTED_DECLS,
3072 FileGroupedDeclIDs.size()};
3073 Stream.EmitRecordWithBlob(AbbrevCode, Record, bytes(FileGroupedDeclIDs));
3074}
3075
3076void ASTWriter::WriteComments() {
3077 Stream.EnterSubblock(COMMENTS_BLOCK_ID, 3);
3078 auto _ = llvm::make_scope_exit([this] { Stream.ExitBlock(); });
3079 if (!PP->getPreprocessorOpts().WriteCommentListToPCH)
3080 return;
3081 RecordData Record;
3082 for (const auto &FO : Context->Comments.OrderedComments) {
3083 for (const auto &OC : FO.second) {
3084 const RawComment *I = OC.second;
3085 Record.clear();
3086 AddSourceRange(I->getSourceRange(), Record);
3087 Record.push_back(I->getKind());
3088 Record.push_back(I->isTrailingComment());
3089 Record.push_back(I->isAlmostTrailingComment());
3090 Stream.EmitRecord(COMMENTS_RAW_COMMENT, Record);
3091 }
3092 }
3093}
3094
3095//===----------------------------------------------------------------------===//
3096// Global Method Pool and Selector Serialization
3097//===----------------------------------------------------------------------===//
3098
3099namespace {
3100
3101// Trait used for the on-disk hash table used in the method pool.
3102class ASTMethodPoolTrait {
3103 ASTWriter &Writer;
3104
3105public:
3106 using key_type = Selector;
3107 using key_type_ref = key_type;
3108
3109 struct data_type {
3110 SelectorID ID;
3111 ObjCMethodList Instance, Factory;
3112 };
3113 using data_type_ref = const data_type &;
3114
3115 using hash_value_type = unsigned;
3116 using offset_type = unsigned;
3117
3118 explicit ASTMethodPoolTrait(ASTWriter &Writer) : Writer(Writer) {}
3119
3120 static hash_value_type ComputeHash(Selector Sel) {
3121 return serialization::ComputeHash(Sel);
3122 }
3123
3124 std::pair<unsigned, unsigned>
3125 EmitKeyDataLength(raw_ostream& Out, Selector Sel,
3126 data_type_ref Methods) {
3127 unsigned KeyLen = 2 + (Sel.getNumArgs()? Sel.getNumArgs() * 4 : 4);
3128 unsigned DataLen = 4 + 2 + 2; // 2 bytes for each of the method counts
3129 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3130 Method = Method->getNext())
3131 if (ShouldWriteMethodListNode(Method))
3132 DataLen += 4;
3133 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3134 Method = Method->getNext())
3135 if (ShouldWriteMethodListNode(Method))
3136 DataLen += 4;
3137 return emitULEBKeyDataLength(KeyLen, DataLen, Out);
3138 }
3139
3140 void EmitKey(raw_ostream& Out, Selector Sel, unsigned) {
3141 using namespace llvm::support;
3142
3143 endian::Writer LE(Out, little);
3144 uint64_t Start = Out.tell();
3145 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", 3145, __extension__
__PRETTY_FUNCTION__))
;
3146 Writer.SetSelectorOffset(Sel, Start);
3147 unsigned N = Sel.getNumArgs();
3148 LE.write<uint16_t>(N);
3149 if (N == 0)
3150 N = 1;
3151 for (unsigned I = 0; I != N; ++I)
3152 LE.write<uint32_t>(
3153 Writer.getIdentifierRef(Sel.getIdentifierInfoForSlot(I)));
3154 }
3155
3156 void EmitData(raw_ostream& Out, key_type_ref,
3157 data_type_ref Methods, unsigned DataLen) {
3158 using namespace llvm::support;
3159
3160 endian::Writer LE(Out, little);
3161 uint64_t Start = Out.tell(); (void)Start;
3162 LE.write<uint32_t>(Methods.ID);
3163 unsigned NumInstanceMethods = 0;
3164 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3165 Method = Method->getNext())
3166 if (ShouldWriteMethodListNode(Method))
3167 ++NumInstanceMethods;
3168
3169 unsigned NumFactoryMethods = 0;
3170 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3171 Method = Method->getNext())
3172 if (ShouldWriteMethodListNode(Method))
3173 ++NumFactoryMethods;
3174
3175 unsigned InstanceBits = Methods.Instance.getBits();
3176 assert(InstanceBits < 4)(static_cast <bool> (InstanceBits < 4) ? void (0) : __assert_fail
("InstanceBits < 4", "clang/lib/Serialization/ASTWriter.cpp"
, 3176, __extension__ __PRETTY_FUNCTION__))
;
3177 unsigned InstanceHasMoreThanOneDeclBit =
3178 Methods.Instance.hasMoreThanOneDecl();
3179 unsigned FullInstanceBits = (NumInstanceMethods << 3) |
3180 (InstanceHasMoreThanOneDeclBit << 2) |
3181 InstanceBits;
3182 unsigned FactoryBits = Methods.Factory.getBits();
3183 assert(FactoryBits < 4)(static_cast <bool> (FactoryBits < 4) ? void (0) : __assert_fail
("FactoryBits < 4", "clang/lib/Serialization/ASTWriter.cpp"
, 3183, __extension__ __PRETTY_FUNCTION__))
;
3184 unsigned FactoryHasMoreThanOneDeclBit =
3185 Methods.Factory.hasMoreThanOneDecl();
3186 unsigned FullFactoryBits = (NumFactoryMethods << 3) |
3187 (FactoryHasMoreThanOneDeclBit << 2) |
3188 FactoryBits;
3189 LE.write<uint16_t>(FullInstanceBits);
3190 LE.write<uint16_t>(FullFactoryBits);
3191 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3192 Method = Method->getNext())
3193 if (ShouldWriteMethodListNode(Method))
3194 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3195 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3196 Method = Method->getNext())
3197 if (ShouldWriteMethodListNode(Method))
3198 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3199
3200 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", 3200, __extension__
__PRETTY_FUNCTION__))
;
3201 }
3202
3203private:
3204 static bool ShouldWriteMethodListNode(const ObjCMethodList *Node) {
3205 return (Node->getMethod() && !Node->getMethod()->isFromASTFile());
3206 }
3207};
3208
3209} // namespace
3210
3211/// Write ObjC data: selectors and the method pool.
3212///
3213/// The method pool contains both instance and factory methods, stored
3214/// in an on-disk hash table indexed by the selector. The hash table also
3215/// contains an empty entry for every other selector known to Sema.
3216void ASTWriter::WriteSelectors(Sema &SemaRef) {
3217 using namespace llvm;
3218
3219 // Do we have to do anything at all?
3220 if (SemaRef.MethodPool.empty() && SelectorIDs.empty())
3221 return;
3222 unsigned NumTableEntries = 0;
3223 // Create and write out the blob that contains selectors and the method pool.
3224 {
3225 llvm::OnDiskChainedHashTableGenerator<ASTMethodPoolTrait> Generator;
3226 ASTMethodPoolTrait Trait(*this);
3227
3228 // Create the on-disk hash table representation. We walk through every
3229 // selector we've seen and look it up in the method pool.
3230 SelectorOffsets.resize(NextSelectorID - FirstSelectorID);
3231 for (auto &SelectorAndID : SelectorIDs) {
3232 Selector S = SelectorAndID.first;
3233 SelectorID ID = SelectorAndID.second;
3234 Sema::GlobalMethodPool::iterator F = SemaRef.MethodPool.find(S);
3235 ASTMethodPoolTrait::data_type Data = {
3236 ID,
3237 ObjCMethodList(),
3238 ObjCMethodList()
3239 };
3240 if (F != SemaRef.MethodPool.end()) {
3241 Data.Instance = F->second.first;
3242 Data.Factory = F->second.second;
3243 }
3244 // Only write this selector if it's not in an existing AST or something
3245 // changed.
3246 if (Chain && ID < FirstSelectorID) {
3247 // Selector already exists. Did it change?
3248 bool changed = false;
3249 for (ObjCMethodList *M = &Data.Instance; M && M->getMethod();
3250 M = M->getNext()) {
3251 if (!M->getMethod()->isFromASTFile()) {
3252 changed = true;
3253 Data.Instance = *M;
3254 break;
3255 }
3256 }
3257 for (ObjCMethodList *M = &Data.Factory; M && M->getMethod();
3258 M = M->getNext()) {
3259 if (!M->getMethod()->isFromASTFile()) {
3260 changed = true;
3261 Data.Factory = *M;
3262 break;
3263 }
3264 }
3265 if (!changed)
3266 continue;
3267 } else if (Data.Instance.getMethod() || Data.Factory.getMethod()) {
3268 // A new method pool entry.
3269 ++NumTableEntries;
3270 }
3271 Generator.insert(S, Data, Trait);
3272 }
3273
3274 // Create the on-disk hash table in a buffer.
3275 SmallString<4096> MethodPool;
3276 uint32_t BucketOffset;
3277 {
3278 using namespace llvm::support;
3279
3280 ASTMethodPoolTrait Trait(*this);
3281 llvm::raw_svector_ostream Out(MethodPool);
3282 // Make sure that no bucket is at offset 0
3283 endian::write<uint32_t>(Out, 0, little);
3284 BucketOffset = Generator.Emit(Out, Trait);
3285 }
3286
3287 // Create a blob abbreviation
3288 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3289 Abbrev->Add(BitCodeAbbrevOp(METHOD_POOL));
3290 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3291 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3292 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3293 unsigned MethodPoolAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3294
3295 // Write the method pool
3296 {
3297 RecordData::value_type Record[] = {METHOD_POOL, BucketOffset,
3298 NumTableEntries};
3299 Stream.EmitRecordWithBlob(MethodPoolAbbrev, Record, MethodPool);
3300 }
3301
3302 // Create a blob abbreviation for the selector table offsets.
3303 Abbrev = std::make_shared<BitCodeAbbrev>();
3304 Abbrev->Add(BitCodeAbbrevOp(SELECTOR_OFFSETS));
3305 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size
3306 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3307 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3308 unsigned SelectorOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3309
3310 // Write the selector offsets table.
3311 {
3312 RecordData::value_type Record[] = {
3313 SELECTOR_OFFSETS, SelectorOffsets.size(),
3314 FirstSelectorID - NUM_PREDEF_SELECTOR_IDS};
3315 Stream.EmitRecordWithBlob(SelectorOffsetAbbrev, Record,
3316 bytes(SelectorOffsets));
3317 }
3318 }
3319}
3320
3321/// Write the selectors referenced in @selector expression into AST file.
3322void ASTWriter::WriteReferencedSelectorsPool(Sema &SemaRef) {
3323 using namespace llvm;
3324
3325 if (SemaRef.ReferencedSelectors.empty())
3326 return;
3327
3328 RecordData Record;
3329 ASTRecordWriter Writer(*this, Record);
3330
3331 // Note: this writes out all references even for a dependent AST. But it is
3332 // very tricky to fix, and given that @selector shouldn't really appear in
3333 // headers, probably not worth it. It's not a correctness issue.
3334 for (auto &SelectorAndLocation : SemaRef.ReferencedSelectors) {
3335 Selector Sel = SelectorAndLocation.first;
3336 SourceLocation Loc = SelectorAndLocation.second;
3337 Writer.AddSelectorRef(Sel);
3338 Writer.AddSourceLocation(Loc);
3339 }
3340 Writer.Emit(REFERENCED_SELECTOR_POOL);
3341}
3342
3343//===----------------------------------------------------------------------===//
3344// Identifier Table Serialization
3345//===----------------------------------------------------------------------===//
3346
3347/// Determine the declaration that should be put into the name lookup table to
3348/// represent the given declaration in this module. This is usually D itself,
3349/// but if D was imported and merged into a local declaration, we want the most
3350/// recent local declaration instead. The chosen declaration will be the most
3351/// recent declaration in any module that imports this one.
3352static NamedDecl *getDeclForLocalLookup(const LangOptions &LangOpts,
3353 NamedDecl *D) {
3354 if (!LangOpts.Modules || !D->isFromASTFile())
3355 return D;
3356
3357 if (Decl *Redecl = D->getPreviousDecl()) {
3358 // For Redeclarable decls, a prior declaration might be local.
3359 for (; Redecl; Redecl = Redecl->getPreviousDecl()) {
3360 // If we find a local decl, we're done.
3361 if (!Redecl->isFromASTFile()) {
3362 // Exception: in very rare cases (for injected-class-names), not all
3363 // redeclarations are in the same semantic context. Skip ones in a
3364 // different context. They don't go in this lookup table at all.
3365 if (!Redecl->getDeclContext()->getRedeclContext()->Equals(
3366 D->getDeclContext()->getRedeclContext()))
3367 continue;
3368 return cast<NamedDecl>(Redecl);
3369 }
3370
3371 // If we find a decl from a (chained-)PCH stop since we won't find a
3372 // local one.
3373 if (Redecl->getOwningModuleID() == 0)
3374 break;
3375 }
3376 } else if (Decl *First = D->getCanonicalDecl()) {
3377 // For Mergeable decls, the first decl might be local.
3378 if (!First->isFromASTFile())
3379 return cast<NamedDecl>(First);
3380 }
3381
3382 // All declarations are imported. Our most recent declaration will also be
3383 // the most recent one in anyone who imports us.
3384 return D;
3385}
3386
3387namespace {
3388
3389class ASTIdentifierTableTrait {
3390 ASTWriter &Writer;
3391 Preprocessor &PP;
3392 IdentifierResolver &IdResolver;
3393 bool IsModule;
3394 bool NeedDecls;
3395 ASTWriter::RecordData *InterestingIdentifierOffsets;
3396
3397 /// Determines whether this is an "interesting" identifier that needs a
3398 /// full IdentifierInfo structure written into the hash table. Notably, this
3399 /// doesn't check whether the name has macros defined; use PublicMacroIterator
3400 /// to check that.
3401 bool isInterestingIdentifier(const IdentifierInfo *II, uint64_t MacroOffset) {
3402 if (MacroOffset || II->isPoisoned() ||
3403 (!IsModule && II->getObjCOrBuiltinID()) ||
3404 II->hasRevertedTokenIDToIdentifier() ||
3405 (NeedDecls && II->getFETokenInfo()))
3406 return true;
3407
3408 return false;
3409 }
3410
3411public:
3412 using key_type = IdentifierInfo *;
3413 using key_type_ref = key_type;
3414
3415 using data_type = IdentID;
3416 using data_type_ref = data_type;
3417
3418 using hash_value_type = unsigned;
3419 using offset_type = unsigned;
3420
3421 ASTIdentifierTableTrait(ASTWriter &Writer, Preprocessor &PP,
3422 IdentifierResolver &IdResolver, bool IsModule,
3423 ASTWriter::RecordData *InterestingIdentifierOffsets)
3424 : Writer(Writer), PP(PP), IdResolver(IdResolver), IsModule(IsModule),
3425 NeedDecls(!IsModule || !Writer.getLangOpts().CPlusPlus),
3426 InterestingIdentifierOffsets(InterestingIdentifierOffsets) {}
3427
3428 bool needDecls() const { return NeedDecls; }
3429
3430 static hash_value_type ComputeHash(const IdentifierInfo* II) {
3431 return llvm::djbHash(II->getName());
3432 }
3433
3434 bool isInterestingIdentifier(const IdentifierInfo *II) {
3435 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3436 return isInterestingIdentifier(II, MacroOffset);
3437 }
3438
3439 bool isInterestingNonMacroIdentifier(const IdentifierInfo *II) {
3440 return isInterestingIdentifier(II, 0);
3441 }
3442
3443 std::pair<unsigned, unsigned>
3444 EmitKeyDataLength(raw_ostream& Out, IdentifierInfo* II, IdentID ID) {
3445 // Record the location of the identifier data. This is used when generating
3446 // the mapping from persistent IDs to strings.
3447 Writer.SetIdentifierOffset(II, Out.tell());
3448
3449 // Emit the offset of the key/data length information to the interesting
3450 // identifiers table if necessary.
3451 if (InterestingIdentifierOffsets && isInterestingIdentifier(II))
3452 InterestingIdentifierOffsets->push_back(Out.tell());
3453
3454 unsigned KeyLen = II->getLength() + 1;
3455 unsigned DataLen = 4; // 4 bytes for the persistent ID << 1
3456 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3457 if (isInterestingIdentifier(II, MacroOffset)) {
3458 DataLen += 2; // 2 bytes for builtin ID
3459 DataLen += 2; // 2 bytes for flags
3460 if (MacroOffset)
3461 DataLen += 4; // MacroDirectives offset.
3462
3463 if (NeedDecls) {
3464 for (IdentifierResolver::iterator D = IdResolver.begin(II),
3465 DEnd = IdResolver.end();
3466 D != DEnd; ++D)
3467 DataLen += 4;
3468 }
3469 }
3470 return emitULEBKeyDataLength(KeyLen, DataLen, Out);
3471 }
3472
3473 void EmitKey(raw_ostream& Out, const IdentifierInfo* II,
3474 unsigned KeyLen) {
3475 Out.write(II->getNameStart(), KeyLen);
3476 }
3477
3478 void EmitData(raw_ostream& Out, IdentifierInfo* II,
3479 IdentID ID, unsigned) {
3480 using namespace llvm::support;
3481
3482 endian::Writer LE(Out, little);
3483
3484 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3485 if (!isInterestingIdentifier(II, MacroOffset)) {
3486 LE.write<uint32_t>(ID << 1);
3487 return;
3488 }
3489
3490 LE.write<uint32_t>((ID << 1) | 0x01);
3491 uint32_t Bits = (uint32_t)II->getObjCOrBuiltinID();
3492 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", 3492, __extension__
__PRETTY_FUNCTION__))
;
3493 LE.write<uint16_t>(Bits);
3494 Bits = 0;
3495 bool HadMacroDefinition = MacroOffset != 0;
3496 Bits = (Bits << 1) | unsigned(HadMacroDefinition);
3497 Bits = (Bits << 1) | unsigned(II->isExtensionToken());
3498 Bits = (Bits << 1) | unsigned(II->isPoisoned());
3499 Bits = (Bits << 1) | unsigned(II->hasRevertedTokenIDToIdentifier());
3500 Bits = (Bits << 1) | unsigned(II->isCPlusPlusOperatorKeyword());
3501 LE.write<uint16_t>(Bits);
3502
3503 if (HadMacroDefinition)
3504 LE.write<uint32_t>(MacroOffset);
3505
3506 if (NeedDecls) {
3507 // Emit the declaration IDs in reverse order, because the
3508 // IdentifierResolver provides the declarations as they would be
3509 // visible (e.g., the function "stat" would come before the struct
3510 // "stat"), but the ASTReader adds declarations to the end of the list
3511 // (so we need to see the struct "stat" before the function "stat").
3512 // Only emit declarations that aren't from a chained PCH, though.
3513 SmallVector<NamedDecl *, 16> Decls(IdResolver.begin(II),
3514 IdResolver.end());
3515 for (NamedDecl *D : llvm::reverse(Decls))
3516 LE.write<uint32_t>(
3517 Writer.getDeclID(getDeclForLocalLookup(PP.getLangOpts(), D)));
3518 }
3519 }
3520};
3521
3522} // namespace
3523
3524/// Write the identifier table into the AST file.
3525///
3526/// The identifier table consists of a blob containing string data
3527/// (the actual identifiers themselves) and a separate "offsets" index
3528/// that maps identifier IDs to locations within the blob.
3529void ASTWriter::WriteIdentifierTable(Preprocessor &PP,
3530 IdentifierResolver &IdResolver,
3531 bool IsModule) {
3532 using namespace llvm;
3533
3534 RecordData InterestingIdents;
3535
3536 // Create and write out the blob that contains the identifier
3537 // strings.
3538 {
3539 llvm::OnDiskChainedHashTableGenerator<ASTIdentifierTableTrait> Generator;
3540 ASTIdentifierTableTrait Trait(
3541 *this, PP, IdResolver, IsModule,
3542 (getLangOpts().CPlusPlus && IsModule) ? &InterestingIdents : nullptr);
3543
3544 // Look for any identifiers that were named while processing the
3545 // headers, but are otherwise not needed. We add these to the hash
3546 // table to enable checking of the predefines buffer in the case
3547 // where the user adds new macro definitions when building the AST
3548 // file.
3549 SmallVector<const IdentifierInfo *, 128> IIs;
3550 for (const auto &ID : PP.getIdentifierTable())
3551 IIs.push_back(ID.second);
3552 // Sort the identifiers lexicographically before getting them references so
3553 // that their order is stable.
3554 llvm::sort(IIs, llvm::deref<std::less<>>());
3555 for (const IdentifierInfo *II : IIs)
3556 if (Trait.isInterestingNonMacroIdentifier(II))
3557 getIdentifierRef(II);
3558
3559 // Create the on-disk hash table representation. We only store offsets
3560 // for identifiers that appear here for the first time.
3561 IdentifierOffsets.resize(NextIdentID - FirstIdentID);
3562 for (auto IdentIDPair : IdentifierIDs) {
3563 auto *II = const_cast<IdentifierInfo *>(IdentIDPair.first);
3564 IdentID ID = IdentIDPair.second;
3565 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", 3565, __extension__
__PRETTY_FUNCTION__))
;
3566 // Write out identifiers if either the ID is local or the identifier has
3567 // changed since it was loaded.
3568 if (ID >= FirstIdentID || !Chain || !II->isFromAST()
3569 || II->hasChangedSinceDeserialization() ||
3570 (Trait.needDecls() &&
3571 II->hasFETokenInfoChangedSinceDeserialization()))
3572 Generator.insert(II, ID, Trait);
3573 }
3574
3575 // Create the on-disk hash table in a buffer.
3576 SmallString<4096> IdentifierTable;
3577 uint32_t BucketOffset;
3578 {
3579 using namespace llvm::support;
3580
3581 llvm::raw_svector_ostream Out(IdentifierTable);
3582 // Make sure that no bucket is at offset 0
3583 endian::write<uint32_t>(Out, 0, little);
3584 BucketOffset = Generator.Emit(Out, Trait);
3585 }
3586
3587 // Create a blob abbreviation
3588 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3589 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_TABLE));
3590 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3591 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3592 unsigned IDTableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3593
3594 // Write the identifier table
3595 RecordData::value_type Record[] = {IDENTIFIER_TABLE, BucketOffset};
3596 Stream.EmitRecordWithBlob(IDTableAbbrev, Record, IdentifierTable);
3597 }
3598
3599 // Write the offsets table for identifier IDs.
3600 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3601 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_OFFSET));
3602 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of identifiers
3603 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3604 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3605 unsigned IdentifierOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3606
3607#ifndef NDEBUG
3608 for (unsigned I = 0, N = IdentifierOffsets.size(); I != N; ++I)
3609 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", 3609, __extension__
__PRETTY_FUNCTION__))
;
3610#endif
3611
3612 RecordData::value_type Record[] = {IDENTIFIER_OFFSET,
3613 IdentifierOffsets.size(),
3614 FirstIdentID - NUM_PREDEF_IDENT_IDS};
3615 Stream.EmitRecordWithBlob(IdentifierOffsetAbbrev, Record,
3616 bytes(IdentifierOffsets));
3617
3618 // In C++, write the list of interesting identifiers (those that are
3619 // defined as macros, poisoned, or similar unusual things).
3620 if (!InterestingIdents.empty())
3621 Stream.EmitRecord(INTERESTING_IDENTIFIERS, InterestingIdents);
3622}
3623
3624//===----------------------------------------------------------------------===//
3625// DeclContext's Name Lookup Table Serialization
3626//===----------------------------------------------------------------------===//
3627
3628namespace {
3629
3630// Trait used for the on-disk hash table used in the method pool.
3631class ASTDeclContextNameLookupTrait {
3632 ASTWriter &Writer;
3633 llvm::SmallVector<DeclID, 64> DeclIDs;
3634
3635public:
3636 using key_type = DeclarationNameKey;
3637 using key_type_ref = key_type;
3638
3639 /// A start and end index into DeclIDs, representing a sequence of decls.
3640 using data_type = std::pair<unsigned, unsigned>;
3641 using data_type_ref = const data_type &;
3642
3643 using hash_value_type = unsigned;
3644 using offset_type = unsigned;
3645
3646 explicit ASTDeclContextNameLookupTrait(ASTWriter &Writer) : Writer(Writer) {}
3647
3648 template<typename Coll>
3649 data_type getData(const Coll &Decls) {
3650 unsigned Start = DeclIDs.size();
3651 for (NamedDecl *D : Decls) {
3652 DeclIDs.push_back(
3653 Writer.GetDeclRef(getDeclForLocalLookup(Writer.getLangOpts(), D)));
3654 }
3655 return std::make_pair(Start, DeclIDs.size());
3656 }
3657
3658 data_type ImportData(const reader::ASTDeclContextNameLookupTrait::data_type &FromReader) {
3659 unsigned Start = DeclIDs.size();
3660 for (auto ID : FromReader)
3661 DeclIDs.push_back(ID);
3662 return std::make_pair(Start, DeclIDs.size());
3663 }
3664
3665 static bool EqualKey(key_type_ref a, key_type_ref b) {
3666 return a == b;
3667 }
3668
3669 hash_value_type ComputeHash(DeclarationNameKey Name) {
3670 return Name.getHash();
3671 }
3672
3673 void EmitFileRef(raw_ostream &Out, ModuleFile *F) const {
3674 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", 3675, __extension__
__PRETTY_FUNCTION__))
3675 "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", 3675, __extension__
__PRETTY_FUNCTION__))
;
3676
3677 using namespace llvm::support;
3678
3679 endian::write<uint32_t>(Out, Writer.getChain()->getModuleFileID(F), little);
3680 }
3681
3682 std::pair<unsigned, unsigned> EmitKeyDataLength(raw_ostream &Out,
3683 DeclarationNameKey Name,
3684 data_type_ref Lookup) {
3685 unsigned KeyLen = 1;
3686 switch (Name.getKind()) {
3687 case DeclarationName::Identifier:
3688 case DeclarationName::ObjCZeroArgSelector:
3689 case DeclarationName::ObjCOneArgSelector:
3690 case DeclarationName::ObjCMultiArgSelector:
3691 case DeclarationName::CXXLiteralOperatorName:
3692 case DeclarationName::CXXDeductionGuideName:
3693 KeyLen += 4;
3694 break;
3695 case DeclarationName::CXXOperatorName:
3696 KeyLen += 1;
3697 break;
3698 case DeclarationName::CXXConstructorName:
3699 case DeclarationName::CXXDestructorName:
3700 case DeclarationName::CXXConversionFunctionName:
3701 case DeclarationName::CXXUsingDirective:
3702 break;
3703 }
3704
3705 // 4 bytes for each DeclID.
3706 unsigned DataLen = 4 * (Lookup.second - Lookup.first);
3707
3708 return emitULEBKeyDataLength(KeyLen, DataLen, Out);
3709 }
3710
3711 void EmitKey(raw_ostream &Out, DeclarationNameKey Name, unsigned) {
3712 using namespace llvm::support;
3713
3714 endian::Writer LE(Out, little);
3715 LE.write<uint8_t>(Name.getKind());
3716 switch (Name.getKind()) {
3717 case DeclarationName::Identifier:
3718 case DeclarationName::CXXLiteralOperatorName:
3719 case DeclarationName::CXXDeductionGuideName:
3720 LE.write<uint32_t>(Writer.getIdentifierRef(Name.getIdentifier()));
3721 return;
3722 case DeclarationName::ObjCZeroArgSelector:
3723 case DeclarationName::ObjCOneArgSelector:
3724 case DeclarationName::ObjCMultiArgSelector:
3725 LE.write<uint32_t>(Writer.getSelectorRef(Name.getSelector()));
3726 return;
3727 case DeclarationName::CXXOperatorName:
3728 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", 3729, __extension__
__PRETTY_FUNCTION__))
3729 "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", 3729, __extension__
__PRETTY_FUNCTION__))
;
3730 LE.write<uint8_t>(Name.getOperatorKind());
3731 return;
3732 case DeclarationName::CXXConstructorName:
3733 case DeclarationName::CXXDestructorName:
3734 case DeclarationName::CXXConversionFunctionName:
3735 case DeclarationName::CXXUsingDirective:
3736 return;
3737 }
3738
3739 llvm_unreachable("Invalid name kind?")::llvm::llvm_unreachable_internal("Invalid name kind?", "clang/lib/Serialization/ASTWriter.cpp"
, 3739)
;
3740 }
3741
3742 void EmitData(raw_ostream &Out, key_type_ref, data_type Lookup,
3743 unsigned DataLen) {
3744 using namespace llvm::support;
3745
3746 endian::Writer LE(Out, little);
3747 uint64_t Start = Out.tell(); (void)Start;
3748 for (unsigned I = Lookup.first, N = Lookup.second; I != N; ++I)
3749 LE.write<uint32_t>(DeclIDs[I]);
3750 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", 3750, __extension__
__PRETTY_FUNCTION__))
;
3751 }
3752};
3753
3754} // namespace
3755
3756bool ASTWriter::isLookupResultExternal(StoredDeclsList &Result,
3757 DeclContext *DC) {
3758 return Result.hasExternalDecls() &&
3759 DC->hasNeedToReconcileExternalVisibleStorage();
3760}
3761
3762bool ASTWriter::isLookupResultEntirelyExternal(StoredDeclsList &Result,
3763 DeclContext *DC) {
3764 for (auto *D : Result.getLookupResult())
3765 if (!getDeclForLocalLookup(getLangOpts(), D)->isFromASTFile())
3766 return false;
3767
3768 return true;
3769}
3770
3771void
3772ASTWriter::GenerateNameLookupTable(const DeclContext *ConstDC,
3773 llvm::SmallVectorImpl<char> &LookupTable) {
3774 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", 3776, __extension__
__PRETTY_FUNCTION__))
3775 !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", 3776, __extension__
__PRETTY_FUNCTION__))
3776 "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", 3776, __extension__
__PRETTY_FUNCTION__))
;
3777
3778 // FIXME: We need to build the lookups table, which is logically const.
3779 auto *DC = const_cast<DeclContext*>(ConstDC);
3780 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", 3780, __extension__
__PRETTY_FUNCTION__))
;
3781
3782 // Create the on-disk hash table representation.
3783 MultiOnDiskHashTableGenerator<reader::ASTDeclContextNameLookupTrait,
3784 ASTDeclContextNameLookupTrait> Generator;
3785 ASTDeclContextNameLookupTrait Trait(*this);
3786
3787 // The first step is to collect the declaration names which we need to
3788 // serialize into the name lookup table, and to collect them in a stable
3789 // order.
3790 SmallVector<DeclarationName, 16> Names;
3791
3792 // We also build up small sets of the constructor and conversion function
3793 // names which are visible.
3794 llvm::SmallPtrSet<DeclarationName, 8> ConstructorNameSet, ConversionNameSet;
3795
3796 for (auto &Lookup : *DC->buildLookup()) {
3797 auto &Name = Lookup.first;
3798 auto &Result = Lookup.second;
3799
3800 // If there are no local declarations in our lookup result, we
3801 // don't need to write an entry for the name at all. If we can't
3802 // write out a lookup set without performing more deserialization,
3803 // just skip this entry.
3804 if (isLookupResultExternal(Result, DC) &&
3805 isLookupResultEntirelyExternal(Result, DC))
3806 continue;
3807
3808 // We also skip empty results. If any of the results could be external and
3809 // the currently available results are empty, then all of the results are
3810 // external and we skip it above. So the only way we get here with an empty
3811 // results is when no results could have been external *and* we have
3812 // external results.
3813 //
3814 // FIXME: While we might want to start emitting on-disk entries for negative
3815 // lookups into a decl context as an optimization, today we *have* to skip
3816 // them because there are names with empty lookup results in decl contexts
3817 // which we can't emit in any stable ordering: we lookup constructors and
3818 // conversion functions in the enclosing namespace scope creating empty
3819 // results for them. This in almost certainly a bug in Clang's name lookup,
3820 // but that is likely to be hard or impossible to fix and so we tolerate it
3821 // here by omitting lookups with empty results.
3822 if (Lookup.second.getLookupResult().empty())
3823 continue;
3824
3825 switch (Lookup.first.getNameKind()) {
3826 default:
3827 Names.push_back(Lookup.first);
3828 break;
3829
3830 case DeclarationName::CXXConstructorName:
3831 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", 3832, __extension__
__PRETTY_FUNCTION__))
3832 "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", 3832, __extension__
__PRETTY_FUNCTION__))
;
3833 ConstructorNameSet.insert(Name);
3834 break;
3835
3836 case DeclarationName::CXXConversionFunctionName:
3837 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", 3838, __extension__
__PRETTY_FUNCTION__))
3838 "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", 3838, __extension__
__PRETTY_FUNCTION__))
;
3839 ConversionNameSet.insert(Name);
3840 break;
3841 }
3842 }
3843
3844 // Sort the names into a stable order.
3845 llvm::sort(Names);
3846
3847 if (auto *D = dyn_cast<CXXRecordDecl>(DC)) {
3848 // We need to establish an ordering of constructor and conversion function
3849 // names, and they don't have an intrinsic ordering.
3850
3851 // First we try the easy case by forming the current context's constructor
3852 // name and adding that name first. This is a very useful optimization to
3853 // avoid walking the lexical declarations in many cases, and it also
3854 // handles the only case where a constructor name can come from some other
3855 // lexical context -- when that name is an implicit constructor merged from
3856 // another declaration in the redecl chain. Any non-implicit constructor or
3857 // conversion function which doesn't occur in all the lexical contexts
3858 // would be an ODR violation.
3859 auto ImplicitCtorName = Context->DeclarationNames.getCXXConstructorName(
3860 Context->getCanonicalType(Context->getRecordType(D)));
3861 if (ConstructorNameSet.erase(ImplicitCtorName))
3862 Names.push_back(ImplicitCtorName);
3863
3864 // If we still have constructors or conversion functions, we walk all the
3865 // names in the decl and add the constructors and conversion functions
3866 // which are visible in the order they lexically occur within the context.
3867 if (!ConstructorNameSet.empty() || !ConversionNameSet.empty())
3868 for (Decl *ChildD : cast<CXXRecordDecl>(DC)->decls())
3869 if (auto *ChildND = dyn_cast<NamedDecl>(ChildD)) {
3870 auto Name = ChildND->getDeclName();
3871 switch (Name.getNameKind()) {
3872 default:
3873 continue;
3874
3875 case DeclarationName::CXXConstructorName:
3876 if (ConstructorNameSet.erase(Name))
3877 Names.push_back(Name);
3878 break;
3879
3880 case DeclarationName::CXXConversionFunctionName:
3881 if (ConversionNameSet.erase(Name))
3882 Names.push_back(Name);
3883 break;
3884 }
3885
3886 if (ConstructorNameSet.empty() && ConversionNameSet.empty())
3887 break;
3888 }
3889
3890 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", 3892, __extension__
__PRETTY_FUNCTION__))
3891 "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", 3892, __extension__
__PRETTY_FUNCTION__))
3892 "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", 3892, __extension__
__PRETTY_FUNCTION__))
;
3893 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", 3895, __extension__
__PRETTY_FUNCTION__))
3894 "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", 3895, __extension__
__PRETTY_FUNCTION__))
3895 "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", 3895, __extension__
__PRETTY_FUNCTION__))
;
3896 }
3897
3898 // Next we need to do a lookup with each name into this decl context to fully
3899 // populate any results from external sources. We don't actually use the
3900 // results of these lookups because we only want to use the results after all
3901 // results have been loaded and the pointers into them will be stable.
3902 for (auto &Name : Names)
3903 DC->lookup(Name);
3904
3905 // Now we need to insert the results for each name into the hash table. For
3906 // constructor names and conversion function names, we actually need to merge
3907 // all of the results for them into one list of results each and insert
3908 // those.
3909 SmallVector<NamedDecl *, 8> ConstructorDecls;
3910 SmallVector<NamedDecl *, 8> ConversionDecls;
3911
3912 // Now loop over the names, either inserting them or appending for the two
3913 // special cases.
3914 for (auto &Name : Names) {
3915 DeclContext::lookup_result Result = DC->noload_lookup(Name);
3916
3917 switch (Name.getNameKind()) {
3918 default:
3919 Generator.insert(Name, Trait.getData(Result), Trait);
3920 break;
3921
3922 case DeclarationName::CXXConstructorName:
3923 ConstructorDecls.append(Result.begin(), Result.end());
3924 break;
3925
3926 case DeclarationName::CXXConversionFunctionName:
3927 ConversionDecls.append(Result.begin(), Result.end());
3928 break;
3929 }
3930 }
3931
3932 // Handle our two special cases if we ended up having any. We arbitrarily use
3933 // the first declaration's name here because the name itself isn't part of
3934 // the key, only the kind of name is used.
3935 if (!ConstructorDecls.empty())
3936 Generator.insert(ConstructorDecls.front()->getDeclName(),
3937 Trait.getData(ConstructorDecls), Trait);
3938 if (!ConversionDecls.empty())
3939 Generator.insert(ConversionDecls.front()->getDeclName(),
3940 Trait.getData(ConversionDecls), Trait);
3941
3942 // Create the on-disk hash table. Also emit the existing imported and
3943 // merged table if there is one.
3944 auto *Lookups = Chain ? Chain->getLoadedLookupTables(DC) : nullptr;
3945 Generator.emit(LookupTable, Trait, Lookups ? &Lookups->Table : nullptr);
3946}
3947
3948/// Write the block containing all of the declaration IDs
3949/// visible from the given DeclContext.
3950///
3951/// \returns the offset of the DECL_CONTEXT_VISIBLE block within the
3952/// bitstream, or 0 if no block was written.
3953uint64_t ASTWriter::WriteDeclContextVisibleBlock(ASTContext &Context,
3954 DeclContext *DC) {
3955 // If we imported a key declaration of this namespace, write the visible
3956 // lookup results as an update record for it rather than including them
3957 // on this declaration. We will only look at key declarations on reload.
3958 if (isa<NamespaceDecl>(DC) && Chain &&
3959 Chain->getKeyDeclaration(cast<Decl>(DC))->isFromASTFile()) {
3960 // Only do this once, for the first local declaration of the namespace.
3961 for (auto *Prev = cast<NamespaceDecl>(DC)->getPreviousDecl(); Prev;
3962 Prev = Prev->getPreviousDecl())
3963 if (!Prev->isFromASTFile())
3964 return 0;
3965
3966 // Note that we need to emit an update record for the primary context.
3967 UpdatedDeclContexts.insert(DC->getPrimaryContext());
3968
3969 // Make sure all visible decls are written. They will be recorded later. We
3970 // do this using a side data structure so we can sort the names into
3971 // a deterministic order.
3972 StoredDeclsMap *Map = DC->getPrimaryContext()->buildLookup();
3973 SmallVector<std::pair<DeclarationName, DeclContext::lookup_result>, 16>
3974 LookupResults;
3975 if (Map) {
3976 LookupResults.reserve(Map->size());
3977 for (auto &Entry : *Map)
3978 LookupResults.push_back(
3979 std::make_pair(Entry.first, Entry.second.getLookupResult()));
3980 }
3981
3982 llvm::sort(LookupResults, llvm::less_first());
3983 for (auto &NameAndResult : LookupResults) {
3984 DeclarationName Name = NameAndResult.first;
3985 DeclContext::lookup_result Result = NameAndResult.second;
3986 if (Name.getNameKind() == DeclarationName::CXXConstructorName ||
3987 Name.getNameKind() == DeclarationName::CXXConversionFunctionName) {
3988 // We have to work around a name lookup bug here where negative lookup
3989 // results for these names get cached in namespace lookup tables (these
3990 // names should never be looked up in a namespace).
3991 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", 3992, __extension__
__PRETTY_FUNCTION__))
3992 "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", 3992, __extension__
__PRETTY_FUNCTION__))
;
3993 continue;
3994 }
3995
3996 for (NamedDecl *ND : Result)
3997 if (!ND->isFromASTFile())
3998 GetDeclRef(ND);
3999 }
4000
4001 return 0;
4002 }
4003
4004 if (DC->getPrimaryContext() != DC)
4005 return 0;
4006
4007 // Skip contexts which don't support name lookup.
4008 if (!DC->isLookupContext())
4009 return 0;
4010
4011 // If not in C++, we perform name lookup for the translation unit via the
4012 // IdentifierInfo chains, don't bother to build a visible-declarations table.
4013 if (DC->isTranslationUnit() && !Context.getLangOpts().CPlusPlus)
4014 return 0;
4015
4016 // Serialize the contents of the mapping used for lookup. Note that,
4017 // although we have two very different code paths, the serialized
4018 // representation is the same for both cases: a declaration name,
4019 // followed by a size, followed by references to the visible
4020 // declarations that have that name.
4021 uint64_t Offset = Stream.GetCurrentBitNo();
4022 StoredDeclsMap *Map = DC->buildLookup();
4023 if (!Map || Map->empty())
4024 return 0;
4025
4026 // Create the on-disk hash table in a buffer.
4027 SmallString<4096> LookupTable;
4028 GenerateNameLookupTable(DC, LookupTable);
4029
4030 // Write the lookup table
4031 RecordData::value_type Record[] = {DECL_CONTEXT_VISIBLE};
4032 Stream.EmitRecordWithBlob(DeclContextVisibleLookupAbbrev, Record,
4033 LookupTable);
4034 ++NumVisibleDeclContexts;
4035 return Offset;
4036}
4037
4038/// Write an UPDATE_VISIBLE block for the given context.
4039///
4040/// UPDATE_VISIBLE blocks contain the declarations that are added to an existing
4041/// DeclContext in a dependent AST file. As such, they only exist for the TU
4042/// (in C++), for namespaces, and for classes with forward-declared unscoped
4043/// enumeration members (in C++11).
4044void ASTWriter::WriteDeclContextVisibleUpdate(const DeclContext *DC) {
4045 StoredDeclsMap *Map = DC->getLookupPtr();
4046 if (!Map || Map->empty())
4047 return;
4048
4049 // Create the on-disk hash table in a buffer.
4050 SmallString<4096> LookupTable;
4051 GenerateNameLookupTable(DC, LookupTable);
4052
4053 // If we're updating a namespace, select a key declaration as the key for the
4054 // update record; those are the only ones that will be checked on reload.
4055 if (isa<NamespaceDecl>(DC))
4056 DC = cast<DeclContext>(Chain->getKeyDeclaration(cast<Decl>(DC)));
4057
4058 // Write the lookup table
4059 RecordData::value_type Record[] = {UPDATE_VISIBLE, getDeclID(cast<Decl>(DC))};
4060 Stream.EmitRecordWithBlob(UpdateVisibleAbbrev, Record, LookupTable);
4061}
4062
4063/// Write an FP_PRAGMA_OPTIONS block for the given FPOptions.
4064void ASTWriter::WriteFPPragmaOptions(const FPOptionsOverride &Opts) {
4065 RecordData::value_type Record[] = {Opts.getAsOpaqueInt()};
4066 Stream.EmitRecord(FP_PRAGMA_OPTIONS, Record);
4067}
4068
4069/// Write an OPENCL_EXTENSIONS block for the given OpenCLOptions.
4070void ASTWriter::WriteOpenCLExtensions(Sema &SemaRef) {
4071 if (!SemaRef.Context.getLangOpts().OpenCL)
4072 return;
4073
4074 const OpenCLOptions &Opts = SemaRef.getOpenCLOptions();
4075 RecordData Record;
4076 for (const auto &I:Opts.OptMap) {
4077 AddString(I.getKey(), Record);
4078 auto V = I.getValue();
4079 Record.push_back(V.Supported ? 1 : 0);
4080 Record.push_back(V.Enabled ? 1 : 0);
4081 Record.push_back(V.WithPragma ? 1 : 0);
4082 Record.push_back(V.Avail);
4083 Record.push_back(V.Core);
4084 Record.push_back(V.Opt);
4085 }
4086 Stream.EmitRecord(OPENCL_EXTENSIONS, Record);
4087}
4088void ASTWriter::WriteCUDAPragmas(Sema &SemaRef) {
4089 if (SemaRef.ForceCUDAHostDeviceDepth > 0) {
4090 RecordData::value_type Record[] = {SemaRef.ForceCUDAHostDeviceDepth};
4091 Stream.EmitRecord(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH, Record);
4092 }
4093}
4094
4095void ASTWriter::WriteObjCCategories() {
4096 SmallVector<ObjCCategoriesInfo, 2> CategoriesMap;
4097 RecordData Categories;
4098
4099 for (unsigned I = 0, N = ObjCClassesWithCategories.size(); I != N; ++I) {
4100 unsigned Size = 0;
4101 unsigned StartIndex = Categories.size();
4102
4103 ObjCInterfaceDecl *Class = ObjCClassesWithCategories[I];
4104
4105 // Allocate space for the size.
4106 Categories.push_back(0);
4107
4108 // Add the categories.
4109 for (ObjCInterfaceDecl::known_categories_iterator
4110 Cat = Class->known_categories_begin(),
4111 CatEnd = Class->known_categories_end();
4112 Cat != CatEnd; ++Cat, ++Size) {
4113 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", 4113, __extension__
__PRETTY_FUNCTION__))
;
4114 AddDeclRef(*Cat, Categories);
4115 }
4116
4117 // Update the size.
4118 Categories[StartIndex] = Size;
4119
4120 // Record this interface -> category map.
4121 ObjCCategoriesInfo CatInfo = { getDeclID(Class), StartIndex };
4122 CategoriesMap.push_back(CatInfo);
4123 }
4124
4125 // Sort the categories map by the definition ID, since the reader will be
4126 // performing binary searches on this information.
4127 llvm::array_pod_sort(CategoriesMap.begin(), CategoriesMap.end());
4128
4129 // Emit the categories map.
4130 using namespace llvm;
4131
4132 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4133 Abbrev->Add(BitCodeAbbrevOp(OBJC_CATEGORIES_MAP));
4134 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # of entries
4135 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4136 unsigned AbbrevID = Stream.EmitAbbrev(std::move(Abbrev));
4137
4138 RecordData::value_type Record[] = {OBJC_CATEGORIES_MAP, CategoriesMap.size()};
4139 Stream.EmitRecordWithBlob(AbbrevID, Record,
4140 reinterpret_cast<char *>(CategoriesMap.data()),
4141 CategoriesMap.size() * sizeof(ObjCCategoriesInfo));
4142
4143 // Emit the category lists.
4144 Stream.EmitRecord(OBJC_CATEGORIES, Categories);
4145}
4146
4147void ASTWriter::WriteLateParsedTemplates(Sema &SemaRef) {
4148 Sema::LateParsedTemplateMapT &LPTMap = SemaRef.LateParsedTemplateMap;
4149
4150 if (LPTMap.empty())
4151 return;
4152
4153 RecordData Record;
4154 for (auto &LPTMapEntry : LPTMap) {
4155 const FunctionDecl *FD = LPTMapEntry.first;
4156 LateParsedTemplate &LPT = *LPTMapEntry.second;
4157 AddDeclRef(FD, Record);
4158 AddDeclRef(LPT.D, Record);
4159 Record.push_back(LPT.Toks.size());
4160
4161 for (const auto &Tok : LPT.Toks) {
4162 AddToken(Tok, Record);
4163 }
4164 }
4165 Stream.EmitRecord(LATE_PARSED_TEMPLATE, Record);
4166}
4167
4168/// Write the state of 'pragma clang optimize' at the end of the module.
4169void ASTWriter::WriteOptimizePragmaOptions(Sema &SemaRef) {
4170 RecordData Record;
4171 SourceLocation PragmaLoc = SemaRef.getOptimizeOffPragmaLocation();
4172 AddSourceLocation(PragmaLoc, Record);
4173 Stream.EmitRecord(OPTIMIZE_PRAGMA_OPTIONS, Record);
4174}
4175
4176/// Write the state of 'pragma ms_struct' at the end of the module.
4177void ASTWriter::WriteMSStructPragmaOptions(Sema &SemaRef) {
4178 RecordData Record;
4179 Record.push_back(SemaRef.MSStructPragmaOn ? PMSST_ON : PMSST_OFF);
4180 Stream.EmitRecord(MSSTRUCT_PRAGMA_OPTIONS, Record);
4181}
4182
4183/// Write the state of 'pragma pointers_to_members' at the end of the
4184//module.
4185void ASTWriter::WriteMSPointersToMembersPragmaOptions(Sema &SemaRef) {
4186 RecordData Record;
4187 Record.push_back(SemaRef.MSPointerToMemberRepresentationMethod);
4188 AddSourceLocation(SemaRef.ImplicitMSInheritanceAttrLoc, Record);
4189 Stream.EmitRecord(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS, Record);
4190}
4191
4192/// Write the state of 'pragma align/pack' at the end of the module.
4193void ASTWriter::WritePackPragmaOptions(Sema &SemaRef) {
4194 // Don't serialize pragma align/pack state for modules, since it should only
4195 // take effect on a per-submodule basis.
4196 if (WritingModule)
4197 return;
4198
4199 RecordData Record;
4200 AddAlignPackInfo(SemaRef.AlignPackStack.CurrentValue, Record);
4201 AddSourceLocation(SemaRef.AlignPackStack.CurrentPragmaLocation, Record);
4202 Record.push_back(SemaRef.AlignPackStack.Stack.size());
4203 for (const auto &StackEntry : SemaRef.AlignPackStack.Stack) {
4204 AddAlignPackInfo(StackEntry.Value, Record);
4205 AddSourceLocation(StackEntry.PragmaLocation, Record);
4206 AddSourceLocation(StackEntry.PragmaPushLocation, Record);
4207 AddString(StackEntry.StackSlotLabel, Record);
4208 }
4209 Stream.EmitRecord(ALIGN_PACK_PRAGMA_OPTIONS, Record);
4210}
4211
4212/// Write the state of 'pragma float_control' at the end of the module.
4213void ASTWriter::WriteFloatControlPragmaOptions(Sema &SemaRef) {
4214 // Don't serialize pragma float_control state for modules,
4215 // since it should only take effect on a per-submodule basis.
4216 if (WritingModule)
4217 return;
4218
4219 RecordData Record;
4220 Record.push_back(SemaRef.FpPragmaStack.CurrentValue.getAsOpaqueInt());
4221 AddSourceLocation(SemaRef.FpPragmaStack.CurrentPragmaLocation, Record);
4222 Record.push_back(SemaRef.FpPragmaStack.Stack.size());
4223 for (const auto &StackEntry : SemaRef.FpPragmaStack.Stack) {
4224 Record.push_back(StackEntry.Value.getAsOpaqueInt());
4225 AddSourceLocation(StackEntry.PragmaLocation, Record);
4226 AddSourceLocation(StackEntry.PragmaPushLocation, Record);
4227 AddString(StackEntry.StackSlotLabel, Record);
4228 }
4229 Stream.EmitRecord(FLOAT_CONTROL_PRAGMA_OPTIONS, Record);
4230}
4231
4232void ASTWriter::WriteModuleFileExtension(Sema &SemaRef,
4233 ModuleFileExtensionWriter &Writer) {
4234 // Enter the extension block.
4235 Stream.EnterSubblock(EXTENSION_BLOCK_ID, 4);
4236
4237 // Emit the metadata record abbreviation.
4238 auto Abv = std::make_shared<llvm::BitCodeAbbrev>();
4239 Abv->Add(llvm::BitCodeAbbrevOp(EXTENSION_METADATA));
4240 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4241 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4242 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4243 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4244 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4245 unsigned Abbrev = Stream.EmitAbbrev(std::move(Abv));
4246
4247 // Emit the metadata record.
4248 RecordData Record;
4249 auto Metadata = Writer.getExtension()->getExtensionMetadata();
4250 Record.push_back(EXTENSION_METADATA);
4251 Record.push_back(Metadata.MajorVersion);
4252 Record.push_back(Metadata.MinorVersion);
4253 Record.push_back(Metadata.BlockName.size());
4254 Record.push_back(Metadata.UserInfo.size());
4255 SmallString<64> Buffer;
4256 Buffer += Metadata.BlockName;
4257 Buffer += Metadata.UserInfo;
4258 Stream.EmitRecordWithBlob(Abbrev, Record, Buffer);
4259
4260 // Emit the contents of the extension block.
4261 Writer.writeExtensionContents(SemaRef, Stream);
4262
4263 // Exit the extension block.
4264 Stream.ExitBlock();
4265}
4266
4267//===----------------------------------------------------------------------===//
4268// General Serialization Routines
4269//===----------------------------------------------------------------------===//
4270
4271void ASTRecordWriter::AddAttr(const Attr *A) {
4272 auto &Record = *this;
4273 if (!A)
4274 return Record.push_back(0);
4275 Record.push_back(A->getKind() + 1); // FIXME: stable encoding, target attrs
4276
4277 Record.AddIdentifierRef(A->getAttrName());
4278 Record.AddIdentifierRef(A->getScopeName());
4279 Record.AddSourceRange(A->getRange());
4280 Record.AddSourceLocation(A->getScopeLoc());
4281 Record.push_back(A->getParsedKind());
4282 Record.push_back(A->getSyntax());
4283 Record.push_back(A->getAttributeSpellingListIndexRaw());
4284
4285#include "clang/Serialization/AttrPCHWrite.inc"
4286}
4287
4288/// Emit the list of attributes to the specified record.
4289void ASTRecordWriter::AddAttributes(ArrayRef<const Attr *> Attrs) {
4290 push_back(Attrs.size());
4291 for (const auto *A : Attrs)
4292 AddAttr(A);
4293}
4294
4295void ASTWriter::AddToken(const Token &Tok, RecordDataImpl &Record) {
4296 AddSourceLocation(Tok.getLocation(), Record);
4297 Record.push_back(Tok.getLength());
4298
4299 // FIXME: When reading literal tokens, reconstruct the literal pointer
4300 // if it is needed.
4301 AddIdentifierRef(Tok.getIdentifierInfo(), Record);
4302 // FIXME: Should translate token kind to a stable encoding.
4303 Record.push_back(Tok.getKind());
4304 // FIXME: Should translate token flags to a stable encoding.
4305 Record.push_back(Tok.getFlags());
4306}
4307
4308void ASTWriter::AddString(StringRef Str, RecordDataImpl &Record) {
4309 Record.push_back(Str.size());
4310 Record.insert(Record.end(), Str.begin(), Str.end());
4311}
4312
4313bool ASTWriter::PreparePathForOutput(SmallVectorImpl<char> &Path) {
4314 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", 4314, __extension__
__PRETTY_FUNCTION__))
;
4315
4316 bool Changed =
4317 cleanPathForOutput(Context->getSourceManager().getFileManager(), Path);
4318
4319 // Remove a prefix to make the path relative, if relevant.
4320 const char *PathBegin = Path.data();
4321 const char *PathPtr =
4322 adjustFilenameForRelocatableAST(PathBegin, BaseDirectory);
4323 if (PathPtr != PathBegin) {
4324 Path.erase(Path.begin(), Path.begin() + (PathPtr - PathBegin));
4325 Changed = true;
4326 }
4327
4328 return Changed;
4329}
4330
4331void ASTWriter::AddPath(StringRef Path, RecordDataImpl &Record) {
4332 SmallString<128> FilePath(Path);
4333 PreparePathForOutput(FilePath);
4334 AddString(FilePath, Record);
4335}
4336
4337void ASTWriter::EmitRecordWithPath(unsigned Abbrev, RecordDataRef Record,
4338 StringRef Path) {
4339 SmallString<128> FilePath(Path);
4340 PreparePathForOutput(FilePath);
4341 Stream.EmitRecordWithBlob(Abbrev, Record, FilePath);
4342}
4343
4344void ASTWriter::AddVersionTuple(const VersionTuple &Version,
4345 RecordDataImpl &Record) {
4346 Record.push_back(Version.getMajor());
4347 if (Optional<unsigned> Minor = Version.getMinor())
4348 Record.push_back(*Minor + 1);
4349 else
4350 Record.push_back(0);
4351 if (Optional<unsigned> Subminor = Version.getSubminor())
4352 Record.push_back(*Subminor + 1);
4353 else
4354 Record.push_back(0);
4355}
4356
4357/// Note that the identifier II occurs at the given offset
4358/// within the identifier table.
4359void ASTWriter::SetIdentifierOffset(const IdentifierInfo *II, uint32_t Offset) {
4360 IdentID ID = IdentifierIDs[II];
4361 // Only store offsets new to this AST file. Other identifier names are looked
4362 // up earlier in the chain and thus don't need an offset.
4363 if (ID >= FirstIdentID)
4364 IdentifierOffsets[ID - FirstIdentID] = Offset;
4365}
4366
4367/// Note that the selector Sel occurs at the given offset
4368/// within the method pool/selector table.
4369void ASTWriter::SetSelectorOffset(Selector Sel, uint32_t Offset) {
4370 unsigned ID = SelectorIDs[Sel];
4371 assert(ID && "Unknown selector")(static_cast <bool> (ID && "Unknown selector") ?
void (0) : __assert_fail ("ID && \"Unknown selector\""
, "clang/lib/Serialization/ASTWriter.cpp", 4371, __extension__
__PRETTY_FUNCTION__))
;
4372 // Don't record offsets for selectors that are also available in a different
4373 // file.
4374 if (ID < FirstSelectorID)
4375 return;
4376 SelectorOffsets[ID - FirstSelectorID] = Offset;
4377}
4378
4379ASTWriter::ASTWriter(llvm::BitstreamWriter &Stream,
4380 SmallVectorImpl<char> &Buffer,
4381 InMemoryModuleCache &ModuleCache,
4382 ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions,
4383 bool IncludeTimestamps)
4384 : Stream(Stream), Buffer(Buffer), ModuleCache(ModuleCache),
4385 IncludeTimestamps(IncludeTimestamps) {
4386 for (const auto &Ext : Extensions) {
4387 if (auto Writer = Ext->createExtensionWriter(*this))
4388 ModuleFileExtensionWriters.push_back(std::move(Writer));
4389 }
4390}
4391
4392ASTWriter::~ASTWriter() = default;
4393
4394const LangOptions &ASTWriter::getLangOpts() const {
4395 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", 4395, __extension__
__PRETTY_FUNCTION__))
;
4396 return Context->getLangOpts();
4397}
4398
4399time_t ASTWriter::getTimestampForOutput(const FileEntry *E) const {
4400 return IncludeTimestamps ? E->getModificationTime() : 0;
4401}
4402
4403ASTFileSignature ASTWriter::WriteAST(Sema &SemaRef,
4404 const std::string &OutputFile,
4405 Module *WritingModule, StringRef isysroot,
4406 bool hasErrors,
4407 bool ShouldCacheASTInMemory) {
4408 WritingAST = true;
4409
4410 ASTHasCompilerErrors = hasErrors;
4411
4412 // Emit the file header.
4413 Stream.Emit((unsigned)'C', 8);
4414 Stream.Emit((unsigned)'P', 8);
4415 Stream.Emit((unsigned)'C', 8);
4416 Stream.Emit((unsigned)'H', 8);
4417
4418 WriteBlockInfoBlock();
4419
4420 Context = &SemaRef.Context;
4421 PP = &SemaRef.PP;
4422 this->WritingModule = WritingModule;
4423 ASTFileSignature Signature =
4424 WriteASTCore(SemaRef, isysroot, OutputFile, WritingModule);
4425 Context = nullptr;
4426 PP = nullptr;
4427 this->WritingModule = nullptr;
4428 this->BaseDirectory.clear();
4429
4430 WritingAST = false;
4431 if (ShouldCacheASTInMemory) {
4432 // Construct MemoryBuffer and update buffer manager.
4433 ModuleCache.addBuiltPCM(OutputFile,
4434 llvm::MemoryBuffer::getMemBufferCopy(
4435 StringRef(Buffer.begin(), Buffer.size())));
4436 }
4437 return Signature;
4438}
4439
4440template<typename Vector>
4441static void AddLazyVectorDecls(ASTWriter &Writer, Vector &Vec,
4442 ASTWriter::RecordData &Record) {
4443 for (typename Vector::iterator I = Vec.begin(nullptr, true), E = Vec.end();
4444 I != E; ++I) {
4445 Writer.AddDeclRef(*I, Record);
4446 }
4447}
4448
4449ASTFileSignature ASTWriter::WriteASTCore(Sema &SemaRef, StringRef isysroot,
4450 const std::string &OutputFile,
4451 Module *WritingModule) {
4452 using namespace llvm;
4453
4454 bool isModule = WritingModule != nullptr;
4455
4456 // Make sure that the AST reader knows to finalize itself.
4457 if (Chain)
4458 Chain->finalizeForWriting();
4459
4460 ASTContext &Context = SemaRef.Context;
4461 Preprocessor &PP = SemaRef.PP;
4462
4463 // Set up predefined declaration IDs.
4464 auto RegisterPredefDecl = [&] (Decl *D, PredefinedDeclIDs ID) {
4465 if (D) {
4466 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", 4466, __extension__
__PRETTY_FUNCTION__))
;
4467 DeclIDs[D] = ID;
4468 }
4469 };
4470 RegisterPredefDecl(Context.getTranslationUnitDecl(),
4471 PREDEF_DECL_TRANSLATION_UNIT_ID);
4472 RegisterPredefDecl(Context.ObjCIdDecl, PREDEF_DECL_OBJC_ID_ID);
4473 RegisterPredefDecl(Context.ObjCSelDecl, PREDEF_DECL_OBJC_SEL_ID);
4474 RegisterPredefDecl(Context.ObjCClassDecl, PREDEF_DECL_OBJC_CLASS_ID);
4475 RegisterPredefDecl(Context.ObjCProtocolClassDecl,
4476 PREDEF_DECL_OBJC_PROTOCOL_ID);
4477 RegisterPredefDecl(Context.Int128Decl, PREDEF_DECL_INT_128_ID);
4478 RegisterPredefDecl(Context.UInt128Decl, PREDEF_DECL_UNSIGNED_INT_128_ID);
4479 RegisterPredefDecl(Context.ObjCInstanceTypeDecl,
4480 PREDEF_DECL_OBJC_INSTANCETYPE_ID);
4481 RegisterPredefDecl(Context.BuiltinVaListDecl, PREDEF_DECL_BUILTIN_VA_LIST_ID);
4482 RegisterPredefDecl(Context.VaListTagDecl, PREDEF_DECL_VA_LIST_TAG);
4483 RegisterPredefDecl(Context.BuiltinMSVaListDecl,
4484 PREDEF_DECL_BUILTIN_MS_VA_LIST_ID);
4485 RegisterPredefDecl(Context.MSGuidTagDecl,
4486 PREDEF_DECL_BUILTIN_MS_GUID_ID);
4487 RegisterPredefDecl(Context.ExternCContext, PREDEF_DECL_EXTERN_C_CONTEXT_ID);
4488 RegisterPredefDecl(Context.MakeIntegerSeqDecl,
4489 PREDEF_DECL_MAKE_INTEGER_SEQ_ID);
4490 RegisterPredefDecl(Context.CFConstantStringTypeDecl,
4491 PREDEF_DECL_CF_CONSTANT_STRING_ID);
4492 RegisterPredefDecl(Context.CFConstantStringTagDecl,
4493 PREDEF_DECL_CF_CONSTANT_STRING_TAG_ID);
4494 RegisterPredefDecl(Context.TypePackElementDecl,
4495 PREDEF_DECL_TYPE_PACK_ELEMENT_ID);
4496
4497 // Build a record containing all of the tentative definitions in this file, in
4498 // TentativeDefinitions order. Generally, this record will be empty for
4499 // headers.
4500 RecordData TentativeDefinitions;
4501 AddLazyVectorDecls(*this, SemaRef.TentativeDefinitions, TentativeDefinitions);
4502
4503 // Build a record containing all of the file scoped decls in this file.
4504 RecordData UnusedFileScopedDecls;
4505 if (!isModule)
4506 AddLazyVectorDecls(*this, SemaRef.UnusedFileScopedDecls,
4507 UnusedFileScopedDecls);
4508
4509 // Build a record containing all of the delegating constructors we still need
4510 // to resolve.
4511 RecordData DelegatingCtorDecls;
4512 if (!isModule)
4513 AddLazyVectorDecls(*this, SemaRef.DelegatingCtorDecls, DelegatingCtorDecls);
4514
4515 // Write the set of weak, undeclared identifiers. We always write the
4516 // entire table, since later PCH files in a PCH chain are only interested in
4517 // the results at the end of the chain.
4518 RecordData WeakUndeclaredIdentifiers;
4519 for (auto &WeakUndeclaredIdentifier : SemaRef.WeakUndeclaredIdentifiers) {
4520 IdentifierInfo *II = WeakUndeclaredIdentifier.first;
4521 WeakInfo &WI = WeakUndeclaredIdentifier.second;
4522 AddIdentifierRef(II, WeakUndeclaredIdentifiers);
4523 AddIdentifierRef(WI.getAlias(), WeakUndeclaredIdentifiers);
4524 AddSourceLocation(WI.getLocation(), WeakUndeclaredIdentifiers);
4525 WeakUndeclaredIdentifiers.push_back(WI.getUsed());
4526 }
4527
4528 // Build a record containing all of the ext_vector declarations.
4529 RecordData ExtVectorDecls;
4530 AddLazyVectorDecls(*this, SemaRef.ExtVectorDecls, ExtVectorDecls);
4531
4532 // Build a record containing all of the VTable uses information.
4533 RecordData VTableUses;
4534 if (!SemaRef.VTableUses.empty()) {
4535 for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I) {
4536 AddDeclRef(SemaRef.VTableUses[I].first, VTableUses);
4537 AddSourceLocation(SemaRef.VTableUses[I].second, VTableUses);
4538 VTableUses.push_back(SemaRef.VTablesUsed[SemaRef.VTableUses[I].first]);
4539 }
4540 }
4541
4542 // Build a record containing all of the UnusedLocalTypedefNameCandidates.
4543 RecordData UnusedLocalTypedefNameCandidates;
4544 for (const TypedefNameDecl *TD : SemaRef.UnusedLocalTypedefNameCandidates)
4545 AddDeclRef(TD, UnusedLocalTypedefNameCandidates);
4546
4547 // Build a record containing all of pending implicit instantiations.
4548 RecordData PendingInstantiations;
4549 for (const auto &I : SemaRef.PendingInstantiations) {
4550 AddDeclRef(I.first, PendingInstantiations);
4551 AddSourceLocation(I.second, PendingInstantiations);
4552 }
4553 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", 4554, __extension__
__PRETTY_FUNCTION__))
4554 "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", 4554, __extension__
__PRETTY_FUNCTION__))
;
4555
4556 // Build a record containing some declaration references.
4557 RecordData SemaDeclRefs;
4558 if (SemaRef.StdNamespace || SemaRef.StdBadAlloc || SemaRef.StdAlignValT) {
4559 AddDeclRef(SemaRef.getStdNamespace(), SemaDeclRefs);
4560 AddDeclRef(SemaRef.getStdBadAlloc(), SemaDeclRefs);
4561 AddDeclRef(SemaRef.getStdAlignValT(), SemaDeclRefs);
4562 }
4563
4564 RecordData CUDASpecialDeclRefs;
4565 if (Context.getcudaConfigureCallDecl()) {
4566 AddDeclRef(Context.getcudaConfigureCallDecl(), CUDASpecialDeclRefs);
4567 }
4568
4569 // Build a record containing all of the known namespaces.
4570 RecordData KnownNamespaces;
4571 for (const auto &I : SemaRef.KnownNamespaces) {
4572 if (!I.second)
4573 AddDeclRef(I.first, KnownNamespaces);
4574 }
4575
4576 // Build a record of all used, undefined objects that require definitions.
4577 RecordData UndefinedButUsed;
4578
4579 SmallVector<std::pair<NamedDecl *, SourceLocation>, 16> Undefined;
4580 SemaRef.getUndefinedButUsed(Undefined);
4581 for (const auto &I : Undefined) {
4582 AddDeclRef(I.first, UndefinedButUsed);
4583 AddSourceLocation(I.second, UndefinedButUsed);
4584 }
4585
4586 // Build a record containing all delete-expressions that we would like to
4587 // analyze later in AST.
4588 RecordData DeleteExprsToAnalyze;
4589
4590 if (!isModule) {
4591 for (const auto &DeleteExprsInfo :
4592 SemaRef.getMismatchingDeleteExpressions()) {
4593 AddDeclRef(DeleteExprsInfo.first, DeleteExprsToAnalyze);
4594 DeleteExprsToAnalyze.push_back(DeleteExprsInfo.second.size());
4595 for (const auto &DeleteLoc : DeleteExprsInfo.second) {
4596 AddSourceLocation(DeleteLoc.first, DeleteExprsToAnalyze);
4597 DeleteExprsToAnalyze.push_back(DeleteLoc.second);
4598 }
4599 }
4600 }
4601
4602 // Write the control block
4603 WriteControlBlock(PP, Context, isysroot, OutputFile);
4604
4605 // Write the remaining AST contents.
4606 Stream.FlushToWord();
4607 ASTBlockRange.first = Stream.GetCurrentBitNo();
4608 Stream.EnterSubblock(AST_BLOCK_ID, 5);
4609 ASTBlockStartOffset = Stream.GetCurrentBitNo();
4610
4611 // This is so that older clang versions, before the introduction
4612 // of the control block, can read and reject the newer PCH format.
4613 {
4614 RecordData Record = {VERSION_MAJOR};
4615 Stream.EmitRecord(METADATA_OLD_FORMAT, Record);
4616 }
4617
4618 // Create a lexical update block containing all of the declarations in the
4619 // translation unit that do not come from other AST files.
4620 const TranslationUnitDecl *TU = Context.getTranslationUnitDecl();
4621 SmallVector<uint32_t, 128> NewGlobalKindDeclPairs;
4622 for (const auto *D : TU->noload_decls()) {
4623 if (!D->isFromASTFile()) {
4624 NewGlobalKindDeclPairs.push_back(D->getKind());
4625 NewGlobalKindDeclPairs.push_back(GetDeclRef(D));
4626 }
4627 }
4628
4629 auto Abv = std::make_shared<BitCodeAbbrev>();
4630 Abv->Add(llvm::BitCodeAbbrevOp(TU_UPDATE_LEXICAL));
4631 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4632 unsigned TuUpdateLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv));
4633 {
4634 RecordData::value_type Record[] = {TU_UPDATE_LEXICAL};
4635 Stream.EmitRecordWithBlob(TuUpdateLexicalAbbrev, Record,
4636 bytes(NewGlobalKindDeclPairs));
4637 }
4638
4639 // And a visible updates block for the translation unit.
4640 Abv = std::make_shared<BitCodeAbbrev>();
4641 Abv->Add(llvm::BitCodeAbbrevOp(UPDATE_VISIBLE));
4642 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4643 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4644 UpdateVisibleAbbrev = Stream.EmitAbbrev(std::move(Abv));
4645 WriteDeclContextVisibleUpdate(TU);
4646
4647 // If we have any extern "C" names, write out a visible update for them.
4648 if (Context.ExternCContext)
4649 WriteDeclContextVisibleUpdate(Context.ExternCContext);
4650
4651 // If the translation unit has an anonymous namespace, and we don't already
4652 // have an update block for it, write it as an update block.
4653 // FIXME: Why do we not do this if there's already an update block?
4654 if (NamespaceDecl *NS = TU->getAnonymousNamespace()) {
4655 ASTWriter::UpdateRecord &Record = DeclUpdates[TU];
4656 if (Record.empty())
4657 Record.push_back(DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, NS));
4658 }
4659
4660 // Add update records for all mangling numbers and static local numbers.
4661 // These aren't really update records, but this is a convenient way of
4662 // tagging this rare extra data onto the declarations.
4663 for (const auto &Number : Context.MangleNumbers)
4664 if (!Number.first->isFromASTFile())
4665 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_MANGLING_NUMBER,
4666 Number.second));
4667 for (const auto &Number : Context.StaticLocalNumbers)
4668 if (!Number.first->isFromASTFile())
4669 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_STATIC_LOCAL_NUMBER,
4670 Number.second));
4671
4672 // Make sure visible decls, added to DeclContexts previously loaded from
4673 // an AST file, are registered for serialization. Likewise for template
4674 // specializations added to imported templates.
4675 for (const auto *I : DeclsToEmitEvenIfUnreferenced) {
4676 GetDeclRef(I);
4677 }
4678
4679 // Make sure all decls associated with an identifier are registered for
4680 // serialization, if we're storing decls with identifiers.
4681 if (!WritingModule || !getLangOpts().CPlusPlus) {
4682 llvm::SmallVector<const IdentifierInfo*, 256> IIs;
4683 for (const auto &ID : PP.getIdentifierTable()) {
4684 const IdentifierInfo *II = ID.second;
4685 if (!Chain || !II->isFromAST() || II->hasChangedSinceDeserialization())
4686 IIs.push_back(II);
4687 }
4688 // Sort the identifiers to visit based on their name.
4689 llvm::sort(IIs, llvm::deref<std::less<>>());
4690 for (const IdentifierInfo *II : IIs) {
4691 for (IdentifierResolver::iterator D = SemaRef.IdResolver.begin(II),
4692 DEnd = SemaRef.IdResolver.end();
4693 D != DEnd; ++D) {
4694 GetDeclRef(*D);
4695 }
4696 }
4697 }
4698
4699 // For method pool in the module, if it contains an entry for a selector,
4700 // the entry should be complete, containing everything introduced by that
4701 // module and all modules it imports. It's possible that the entry is out of
4702 // date, so we need to pull in the new content here.
4703
4704 // It's possible that updateOutOfDateSelector can update SelectorIDs. To be
4705 // safe, we copy all selectors out.
4706 llvm::SmallVector<Selector, 256> AllSelectors;
4707 for (auto &SelectorAndID : SelectorIDs)
4708 AllSelectors.push_back(SelectorAndID.first);
4709 for (auto &Selector : AllSelectors)
4710 SemaRef.updateOutOfDateSelector(Selector);
4711
4712 // Form the record of special types.
4713 RecordData SpecialTypes;
4714 AddTypeRef(Context.getRawCFConstantStringType(), SpecialTypes);
4715 AddTypeRef(Context.getFILEType(), SpecialTypes);
4716 AddTypeRef(Context.getjmp_bufType(), SpecialTypes);
4717 AddTypeRef(Context.getsigjmp_bufType(), SpecialTypes);
4718 AddTypeRef(Context.ObjCIdRedefinitionType, SpecialTypes);
4719 AddTypeRef(Context.ObjCClassRedefinitionType, SpecialTypes);
4720 AddTypeRef(Context.ObjCSelRedefinitionType, SpecialTypes);
4721 AddTypeRef(Context.getucontext_tType(), SpecialTypes);
4722
4723 if (Chain) {
4724 // Write the mapping information describing our module dependencies and how
4725 // each of those modules were mapped into our own offset/ID space, so that
4726 // the reader can build the appropriate mapping to its own offset/ID space.
4727 // The map consists solely of a blob with the following format:
4728 // *(module-kind:i8
4729 // module-name-len:i16 module-name:len*i8
4730 // source-location-offset:i32
4731 // identifier-id:i32
4732 // preprocessed-entity-id:i32
4733 // macro-definition-id:i32
4734 // submodule-id:i32
4735 // selector-id:i32
4736 // declaration-id:i32
4737 // c++-base-specifiers-id:i32
4738 // type-id:i32)
4739 //
4740 // module-kind is the ModuleKind enum value. If it is MK_PrebuiltModule,
4741 // MK_ExplicitModule or MK_ImplicitModule, then the module-name is the
4742 // module name. Otherwise, it is the module file name.
4743 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4744 Abbrev->Add(BitCodeAbbrevOp(MODULE_OFFSET_MAP));
4745 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4746 unsigned ModuleOffsetMapAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
4747 SmallString<2048> Buffer;
4748 {
4749 llvm::raw_svector_ostream Out(Buffer);
4750 for (ModuleFile &M : Chain->ModuleMgr) {
4751 using namespace llvm::support;
4752
4753 endian::Writer LE(Out, little);
4754 LE.write<uint8_t>(static_cast<uint8_t>(M.Kind));
4755 StringRef Name = M.isModule() ? M.ModuleName : M.FileName;
4756 LE.write<uint16_t>(Name.size());
4757 Out.write(Name.data(), Name.size());
4758
4759 // Note: if a base ID was uint max, it would not be possible to load
4760 // another module after it or have more than one entity inside it.
4761 uint32_t None = std::numeric_limits<uint32_t>::max();
4762
4763 auto writeBaseIDOrNone = [&](auto BaseID, bool ShouldWrite) {
4764 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", 4764, __extension__
__PRETTY_FUNCTION__))
;
4765 if (ShouldWrite)
4766 LE.write<uint32_t>(BaseID);
4767 else
4768 LE.write<uint32_t>(None);
4769 };
4770
4771 // These values should be unique within a chain, since they will be read
4772 // as keys into ContinuousRangeMaps.
4773 writeBaseIDOrNone(M.SLocEntryBaseOffset, M.LocalNumSLocEntries);
4774 writeBaseIDOrNone(M.BaseIdentifierID, M.LocalNumIdentifiers);
4775 writeBaseIDOrNone(M.BaseMacroID, M.LocalNumMacros);
4776 writeBaseIDOrNone(M.BasePreprocessedEntityID,
4777 M.NumPreprocessedEntities);
4778 writeBaseIDOrNone(M.BaseSubmoduleID, M.LocalNumSubmodules);
4779 writeBaseIDOrNone(M.BaseSelectorID, M.LocalNumSelectors);
4780 writeBaseIDOrNone(M.BaseDeclID, M.LocalNumDecls);
4781 writeBaseIDOrNone(M.BaseTypeIndex, M.LocalNumTypes);
4782 }
4783 }
4784 RecordData::value_type Record[] = {MODULE_OFFSET_MAP};
4785 Stream.EmitRecordWithBlob(ModuleOffsetMapAbbrev, Record,
4786 Buffer.data(), Buffer.size());
4787 }
4788
4789 // Build a record containing all of the DeclsToCheckForDeferredDiags.
4790 SmallVector<serialization::DeclID, 64> DeclsToCheckForDeferredDiags;
4791 for (auto *D : SemaRef.DeclsToCheckForDeferredDiags)
4792 DeclsToCheckForDeferredDiags.push_back(GetDeclRef(D));
4793
4794 RecordData DeclUpdatesOffsetsRecord;
4795
4796 // Keep writing types, declarations, and declaration update records
4797 // until we've emitted all of them.
4798 Stream.EnterSubblock(DECLTYPES_BLOCK_ID, /*bits for abbreviations*/5);
4799 DeclTypesBlockStartOffset = Stream.GetCurrentBitNo();
4800 WriteTypeAbbrevs();
4801 WriteDeclAbbrevs();
4802 do {
4803 WriteDeclUpdatesBlocks(DeclUpdatesOffsetsRecord);
4804 while (!DeclTypesToEmit.empty()) {
4805 DeclOrType DOT = DeclTypesToEmit.front();
4806 DeclTypesToEmit.pop();
4807 if (DOT.isType())
4808 WriteType(DOT.getType());
4809 else
4810 WriteDecl(Context, DOT.getDecl());
4811 }
4812 } while (!DeclUpdates.empty());
4813 Stream.ExitBlock();
4814
4815 DoneWritingDeclsAndTypes = true;
4816
4817 // These things can only be done once we've written out decls and types.
4818 WriteTypeDeclOffsets();
4819 if (!DeclUpdatesOffsetsRecord.empty())
4820 Stream.EmitRecord(DECL_UPDATE_OFFSETS, DeclUpdatesOffsetsRecord);
4821 WriteFileDeclIDsMap();
4822 WriteSourceManagerBlock(Context.getSourceManager(), PP);
4823 WriteComments();
4824 WritePreprocessor(PP, isModule);
4825 WriteHeaderSearch(PP.getHeaderSearchInfo());
4826 WriteSelectors(SemaRef);
4827 WriteReferencedSelectorsPool(SemaRef);
4828 WriteLateParsedTemplates(SemaRef);
4829 WriteIdentifierTable(PP, SemaRef.IdResolver, isModule);
4830 WriteFPPragmaOptions(SemaRef.CurFPFeatureOverrides());
4831 WriteOpenCLExtensions(SemaRef);
4832 WriteCUDAPragmas(SemaRef);
4833
4834 // If we're emitting a module, write out the submodule information.
4835 if (WritingModule)
4836 WriteSubmodules(WritingModule);
4837
4838 Stream.EmitRecord(SPECIAL_TYPES, SpecialTypes);
4839
4840 // Write the record containing external, unnamed definitions.
4841 if (!EagerlyDeserializedDecls.empty())
4842 Stream.EmitRecord(EAGERLY_DESERIALIZED_DECLS, EagerlyDeserializedDecls);
4843
4844 if (!ModularCodegenDecls.empty())
4845 Stream.EmitRecord(MODULAR_CODEGEN_DECLS, ModularCodegenDecls);
4846
4847 // Write the record containing tentative definitions.
4848 if (!TentativeDefinitions.empty())
4849 Stream.EmitRecord(TENTATIVE_DEFINITIONS, TentativeDefinitions);
4850
4851 // Write the record containing unused file scoped decls.
4852 if (!UnusedFileScopedDecls.empty())
4853 Stream.EmitRecord(UNUSED_FILESCOPED_DECLS, UnusedFileScopedDecls);
4854
4855 // Write the record containing weak undeclared identifiers.
4856 if (!WeakUndeclaredIdentifiers.empty())
4857 Stream.EmitRecord(WEAK_UNDECLARED_IDENTIFIERS,
4858 WeakUndeclaredIdentifiers);
4859
4860 // Write the record containing ext_vector type names.
4861 if (!ExtVectorDecls.empty())
4862 Stream.EmitRecord(EXT_VECTOR_DECLS, ExtVectorDecls);
4863
4864 // Write the record containing VTable uses information.
4865 if (!VTableUses.empty())
4866 Stream.EmitRecord(VTABLE_USES, VTableUses);
4867
4868 // Write the record containing potentially unused local typedefs.
4869 if (!UnusedLocalTypedefNameCandidates.empty())
4870 Stream.EmitRecord(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES,
4871 UnusedLocalTypedefNameCandidates);
4872
4873 // Write the record containing pending implicit instantiations.
4874 if (!PendingInstantiations.empty())
4875 Stream.EmitRecord(PENDING_IMPLICIT_INSTANTIATIONS, PendingInstantiations);
4876
4877 // Write the record containing declaration references of Sema.
4878 if (!SemaDeclRefs.empty())
4879 Stream.EmitRecord(SEMA_DECL_REFS, SemaDeclRefs);
4880
4881 // Write the record containing decls to be checked for deferred diags.
4882 if (!DeclsToCheckForDeferredDiags.empty())
4883 Stream.EmitRecord(DECLS_TO_CHECK_FOR_DEFERRED_DIAGS,
4884 DeclsToCheckForDeferredDiags);
4885
4886 // Write the record containing CUDA-specific declaration references.
4887 if (!CUDASpecialDeclRefs.empty())
4888 Stream.EmitRecord(CUDA_SPECIAL_DECL_REFS, CUDASpecialDeclRefs);
4889
4890 // Write the delegating constructors.
4891 if (!DelegatingCtorDecls.empty())
4892 Stream.EmitRecord(DELEGATING_CTORS, DelegatingCtorDecls);
4893
4894 // Write the known namespaces.
4895 if (!KnownNamespaces.empty())
4896 Stream.EmitRecord(KNOWN_NAMESPACES, KnownNamespaces);
4897
4898 // Write the undefined internal functions and variables, and inline functions.
4899 if (!UndefinedButUsed.empty())
4900 Stream.EmitRecord(UNDEFINED_BUT_USED, UndefinedButUsed);
4901
4902 if (!DeleteExprsToAnalyze.empty())
4903 Stream.EmitRecord(DELETE_EXPRS_TO_ANALYZE, DeleteExprsToAnalyze);
4904
4905 // Write the visible updates to DeclContexts.
4906 for (auto *DC : UpdatedDeclContexts)
4907 WriteDeclContextVisibleUpdate(DC);
4908
4909 if (!WritingModule) {
4910 // Write the submodules that were imported, if any.
4911 struct ModuleInfo {
4912 uint64_t ID;
4913 Module *M;
4914 ModuleInfo(uint64_t ID, Module *M) : ID(ID), M(M) {}
4915 };
4916 llvm::SmallVector<ModuleInfo, 64> Imports;
4917 for (const auto *I : Context.local_imports()) {
4918 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", 4918, __extension__
__PRETTY_FUNCTION__))
;
4919 Imports.push_back(ModuleInfo(SubmoduleIDs[I->getImportedModule()],
4920 I->getImportedModule()));
4921 }
4922
4923 if (!Imports.empty()) {
4924 auto Cmp = [](const ModuleInfo &A, const ModuleInfo &B) {
4925 return A.ID < B.ID;
4926 };
4927 auto Eq = [](const ModuleInfo &A, const ModuleInfo &B) {
4928 return A.ID == B.ID;
4929 };
4930
4931 // Sort and deduplicate module IDs.
4932 llvm::sort(Imports, Cmp);
4933 Imports.erase(std::unique(Imports.begin(), Imports.end(), Eq),
4934 Imports.end());
4935
4936 RecordData ImportedModules;
4937 for (const auto &Import : Imports) {
4938 ImportedModules.push_back(Import.ID);
4939 // FIXME: If the module has macros imported then later has declarations
4940 // imported, this location won't be the right one as a location for the
4941 // declaration imports.
4942 AddSourceLocation(PP.getModuleImportLoc(Import.M), ImportedModules);
4943 }
4944
4945 Stream.EmitRecord(IMPORTED_MODULES, ImportedModules);
4946 }
4947 }
4948
4949 WriteObjCCategories();
4950 if(!WritingModule) {
4951 WriteOptimizePragmaOptions(SemaRef);
4952 WriteMSStructPragmaOptions(SemaRef);
4953 WriteMSPointersToMembersPragmaOptions(SemaRef);
4954 }
4955 WritePackPragmaOptions(SemaRef);
4956 WriteFloatControlPragmaOptions(SemaRef);
4957
4958 // Some simple statistics
4959 RecordData::value_type Record[] = {
4960 NumStatements, NumMacros, NumLexicalDeclContexts, NumVisibleDeclContexts};
4961 Stream.EmitRecord(STATISTICS, Record);
4962 Stream.ExitBlock();
4963 Stream.FlushToWord();
4964 ASTBlockRange.second = Stream.GetCurrentBitNo();
4965
4966 // Write the module file extension blocks.
4967 for (const auto &ExtWriter : ModuleFileExtensionWriters)
4968 WriteModuleFileExtension(SemaRef, *ExtWriter);
4969
4970 return writeUnhashedControlBlock(PP, Context);
4971}
4972
4973void ASTWriter::WriteDeclUpdatesBlocks(RecordDataImpl &OffsetsRecord) {
4974 if (DeclUpdates.empty())
4975 return;
4976
4977 DeclUpdateMap LocalUpdates;
4978 LocalUpdates.swap(DeclUpdates);
4979
4980 for (auto &DeclUpdate : LocalUpdates) {
4981 const Decl *D = DeclUpdate.first;
4982
4983 bool HasUpdatedBody = false;
4984 RecordData RecordData;
4985 ASTRecordWriter Record(*this, RecordData);
4986 for (auto &Update : DeclUpdate.second) {
4987 DeclUpdateKind Kind = (DeclUpdateKind)Update.getKind();
4988
4989 // An updated body is emitted last, so that the reader doesn't need
4990 // to skip over the lazy body to reach statements for other records.
4991 if (Kind == UPD_CXX_ADDED_FUNCTION_DEFINITION)
4992 HasUpdatedBody = true;
4993 else
4994 Record.push_back(Kind);
4995
4996 switch (Kind) {
4997 case UPD_CXX_ADDED_IMPLICIT_MEMBER:
4998 case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION:
4999 case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE:
5000 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", 5000, __extension__
__PRETTY_FUNCTION__))
;
5001 Record.push_back(GetDeclRef(Update.getDecl()));
5002 break;
5003
5004 case UPD_CXX_ADDED_FUNCTION_DEFINITION:
5005 break;
5006
5007 case UPD_CXX_POINT_OF_INSTANTIATION:
5008 // FIXME: Do we need to also save the template specialization kind here?
5009 Record.AddSourceLocation(Update.getLoc());
5010 break;
5011
5012 case UPD_CXX_ADDED_VAR_DEFINITION: {
5013 const VarDecl *VD = cast<VarDecl>(D);
5014 Record.push_back(VD->isInline());
5015 Record.push_back(VD->isInlineSpecified());
5016 Record.AddVarDeclInit(VD);
5017 break;
5018 }
5019
5020 case UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT:
5021 Record.AddStmt(const_cast<Expr *>(
5022 cast<ParmVarDecl>(Update.getDecl())->getDefaultArg()));
5023 break;
5024
5025 case UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER:
5026 Record.AddStmt(
5027 cast<FieldDecl>(Update.getDecl())->getInClassInitializer());
5028 break;
5029
5030 case UPD_CXX_INSTANTIATED_CLASS_DEFINITION: {
5031 auto *RD = cast<CXXRecordDecl>(D);
5032 UpdatedDeclContexts.insert(RD->getPrimaryContext());
5033 Record.push_back(RD->isParamDestroyedInCallee());
5034 Record.push_back(RD->getArgPassingRestrictions());
5035 Record.AddCXXDefinitionData(RD);
5036 Record.AddOffset(WriteDeclContextLexicalBlock(
5037 *Context, const_cast<CXXRecordDecl *>(RD)));
5038
5039 // This state is sometimes updated by template instantiation, when we
5040 // switch from the specialization referring to the template declaration
5041 // to it referring to the template definition.
5042 if (auto *MSInfo = RD->getMemberSpecializationInfo()) {
5043 Record.push_back(MSInfo->getTemplateSpecializationKind());
5044 Record.AddSourceLocation(MSInfo->getPointOfInstantiation());
5045 } else {
5046 auto *Spec = cast<ClassTemplateSpecializationDecl>(RD);
5047 Record.push_back(Spec->getTemplateSpecializationKind());
5048 Record.AddSourceLocation(Spec->getPointOfInstantiation());
5049
5050 // The instantiation might have been resolved to a partial
5051 // specialization. If so, record which one.
5052 auto From = Spec->getInstantiatedFrom();
5053 if (auto PartialSpec =
5054 From.dyn_cast<ClassTemplatePartialSpecializationDecl*>()) {
5055 Record.push_back(true);
5056 Record.AddDeclRef(PartialSpec);
5057 Record.AddTemplateArgumentList(
5058 &Spec->getTemplateInstantiationArgs());
5059 } else {
5060 Record.push_back(false);
5061 }
5062 }
5063 Record.push_back(RD->getTagKind());
5064 Record.AddSourceLocation(RD->getLocation());
5065 Record.AddSourceLocation(RD->getBeginLoc());
5066 Record.AddSourceRange(RD->getBraceRange());
5067
5068 // Instantiation may change attributes; write them all out afresh.
5069 Record.push_back(D->hasAttrs());
5070 if (D->hasAttrs())
5071 Record.AddAttributes(D->getAttrs());
5072
5073 // FIXME: Ensure we don't get here for explicit instantiations.
5074 break;
5075 }
5076
5077 case UPD_CXX_RESOLVED_DTOR_DELETE:
5078 Record.AddDeclRef(Update.getDecl());
5079 Record.AddStmt(cast<CXXDestructorDecl>(D)->getOperatorDeleteThisArg());
5080 break;
5081
5082 case UPD_CXX_RESOLVED_EXCEPTION_SPEC: {
5083 auto prototype =
5084 cast<FunctionDecl>(D)->getType()->castAs<FunctionProtoType>();
5085 Record.writeExceptionSpecInfo(prototype->getExceptionSpecInfo());
5086 break;
5087 }
5088
5089 case UPD_CXX_DEDUCED_RETURN_TYPE:
5090 Record.push_back(GetOrCreateTypeID(Update.getType()));
5091 break;
5092
5093 case UPD_DECL_MARKED_USED:
5094 break;
5095
5096 case UPD_MANGLING_NUMBER:
5097 case UPD_STATIC_LOCAL_NUMBER:
5098 Record.push_back(Update.getNumber());
5099 break;
5100
5101 case UPD_DECL_MARKED_OPENMP_THREADPRIVATE:
5102 Record.AddSourceRange(
5103 D->getAttr<OMPThreadPrivateDeclAttr>()->getRange());
5104 break;
5105
5106 case UPD_DECL_MARKED_OPENMP_ALLOCATE: {
5107 auto *A = D->getAttr<OMPAllocateDeclAttr>();
5108 Record.push_back(A->getAllocatorType());
5109 Record.AddStmt(A->getAllocator());
5110 Record.AddStmt(A->getAlignment());
5111 Record.AddSourceRange(A->getRange());
5112 break;
5113 }
5114
5115 case UPD_DECL_MARKED_OPENMP_DECLARETARGET:
5116 Record.push_back(D->getAttr<OMPDeclareTargetDeclAttr>()->getMapType());
5117 Record.AddSourceRange(
5118 D->getAttr<OMPDeclareTargetDeclAttr>()->getRange());
5119 break;
5120
5121 case UPD_DECL_EXPORTED:
5122 Record.push_back(getSubmoduleID(Update.getModule()));
5123 break;
5124
5125 case UPD_ADDED_ATTR_TO_RECORD:
5126 Record.AddAttributes(llvm::makeArrayRef(Update.getAttr()));
5127 break;
5128 }
5129 }
5130
5131 if (HasUpdatedBody) {
5132 const auto *Def = cast<FunctionDecl>(D);
5133 Record.push_back(UPD_CXX_ADDED_FUNCTION_DEFINITION);
5134 Record.push_back(Def->isInlined());
5135 Record.AddSourceLocation(Def->getInnerLocStart());
5136 Record.AddFunctionDefinition(Def);
5137 }
5138
5139 OffsetsRecord.push_back(GetDeclRef(D));
5140 OffsetsRecord.push_back(Record.Emit(DECL_UPDATES));
5141 }
5142}
5143
5144void ASTWriter::AddAlignPackInfo(const Sema::AlignPackInfo &Info,
5145 RecordDataImpl &Record) {
5146 uint32_t Raw = Sema::AlignPackInfo::getRawEncoding(Info);
5147 Record.push_back(Raw);
5148}
5149
5150void ASTWriter::AddSourceLocation(SourceLocation Loc, RecordDataImpl &Record) {
5151 SourceLocation::UIntTy Raw = Loc.getRawEncoding();
5152 Record.push_back((Raw << 1) | (Raw >> (8 * sizeof(Raw) - 1)));
5153}
5154
5155void ASTWriter::AddSourceRange(SourceRange Range, RecordDataImpl &Record) {
5156 AddSourceLocation(Range.getBegin(), Record);
5157 AddSourceLocation(Range.getEnd(), Record);
5158}
5159
5160void ASTRecordWriter::AddAPFloat(const llvm::APFloat &Value) {
5161 AddAPInt(Value.bitcastToAPInt());
5162}
5163
5164void ASTWriter::AddIdentifierRef(const IdentifierInfo *II, RecordDataImpl &Record) {
5165 Record.push_back(getIdentifierRef(II));
5166}
5167
5168IdentID ASTWriter::getIdentifierRef(const IdentifierInfo *II) {
5169 if (!II)
5170 return 0;
5171
5172 IdentID &ID = IdentifierIDs[II];
5173 if (ID == 0)
5174 ID = NextIdentID++;
5175 return ID;
5176}
5177
5178MacroID ASTWriter::getMacroRef(MacroInfo *MI, const IdentifierInfo *Name) {
5179 // Don't emit builtin macros like __LINE__ to the AST file unless they
5180 // have been redefined by the header (in which case they are not
5181 // isBuiltinMacro).
5182 if (!MI || MI->isBuiltinMacro())
5183 return 0;
5184
5185 MacroID &ID = MacroIDs[MI];
5186 if (ID == 0) {
5187 ID = NextMacroID++;
5188 MacroInfoToEmitData Info = { Name, MI, ID };
5189 MacroInfosToEmit.push_back(Info);
5190 }
5191 return ID;
5192}
5193
5194MacroID ASTWriter::getMacroID(MacroInfo *MI) {
5195 if (!MI || MI->isBuiltinMacro())
5196 return 0;
5197
5198 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", 5198, __extension__
__PRETTY_FUNCTION__))
;
5199 return MacroIDs[MI];
5200}
5201
5202uint32_t ASTWriter::getMacroDirectivesOffset(const IdentifierInfo *Name) {
5203 return IdentMacroDirectivesOffsetMap.lookup(Name);
5204}
5205
5206void ASTRecordWriter::AddSelectorRef(const Selector SelRef) {
5207 Record->push_back(Writer->getSelectorRef(SelRef));
5208}
5209
5210SelectorID ASTWriter::getSelectorRef(Selector Sel) {
5211 if (Sel.getAsOpaquePtr() == nullptr) {
5212 return 0;
5213 }
5214
5215 SelectorID SID = SelectorIDs[Sel];
5216 if (SID == 0 && Chain) {
5217 // This might trigger a ReadSelector callback, which will set the ID for
5218 // this selector.
5219 Chain->LoadSelector(Sel);
5220 SID = SelectorIDs[Sel];
5221 }
5222 if (SID == 0) {
5223 SID = NextSelectorID++;
5224 SelectorIDs[Sel] = SID;
5225 }
5226 return SID;
5227}
5228
5229void ASTRecordWriter::AddCXXTemporary(const CXXTemporary *Temp) {
5230 AddDeclRef(Temp->getDestructor());
5231}
5232
5233void ASTRecordWriter::AddTemplateArgumentLocInfo(
5234 TemplateArgument::ArgKind Kind, const TemplateArgumentLocInfo &Arg) {
5235 switch (Kind) {
5236 case TemplateArgument::Expression:
5237 AddStmt(Arg.getAsExpr());
5238 break;
5239 case TemplateArgument::Type:
5240 AddTypeSourceInfo(Arg.getAsTypeSourceInfo());
5241 break;
5242 case TemplateArgument::Template:
5243 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5244 AddSourceLocation(Arg.getTemplateNameLoc());
5245 break;
5246 case TemplateArgument::TemplateExpansion:
5247 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5248 AddSourceLocation(Arg.getTemplateNameLoc());
5249 AddSourceLocation(Arg.getTemplateEllipsisLoc());
5250 break;
5251 case TemplateArgument::Null:
5252 case TemplateArgument::Integral:
5253 case TemplateArgument::Declaration:
5254 case TemplateArgument::NullPtr:
5255 case TemplateArgument::Pack:
5256 // FIXME: Is this right?
5257 break;
5258 }
5259}
5260
5261void ASTRecordWriter::AddTemplateArgumentLoc(const TemplateArgumentLoc &Arg) {
5262 AddTemplateArgument(Arg.getArgument());
5263
5264 if (Arg.getArgument().getKind() == TemplateArgument::Expression) {
5265 bool InfoHasSameExpr
5266 = Arg.getArgument().getAsExpr() == Arg.getLocInfo().getAsExpr();
5267 Record->push_back(InfoHasSameExpr);
5268 if (InfoHasSameExpr)
5269 return; // Avoid storing the same expr twice.
5270 }
5271 AddTemplateArgumentLocInfo(Arg.getArgument().getKind(), Arg.getLocInfo());
5272}
5273
5274void ASTRecordWriter::AddTypeSourceInfo(TypeSourceInfo *TInfo) {
5275 if (!TInfo) {
5276 AddTypeRef(QualType());
5277 return;
5278 }
5279
5280 AddTypeRef(TInfo->getType());
5281 AddTypeLoc(TInfo->getTypeLoc());
5282}
5283
5284void ASTRecordWriter::AddTypeLoc(TypeLoc TL) {
5285 TypeLocWriter TLW(*this);
5286 for (; !TL.isNull(); TL = TL.getNextTypeLoc())
5287 TLW.Visit(TL);
5288}
5289
5290void ASTWriter::AddTypeRef(QualType T, RecordDataImpl &Record) {
5291 Record.push_back(GetOrCreateTypeID(T));
5292}
5293
5294TypeID ASTWriter::GetOrCreateTypeID(QualType T) {
5295 assert(Context)(static_cast <bool> (Context) ? void (0) : __assert_fail
("Context", "clang/lib/Serialization/ASTWriter.cpp", 5295, __extension__
__PRETTY_FUNCTION__))
;
5296 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5297 if (T.isNull())
5298 return TypeIdx();
5299 assert(!T.getLocalFastQualifiers())(static_cast <bool> (!T.getLocalFastQualifiers()) ? void
(0) : __assert_fail ("!T.getLocalFastQualifiers()", "clang/lib/Serialization/ASTWriter.cpp"
, 5299, __extension__ __PRETTY_FUNCTION__))
;
5300
5301 TypeIdx &Idx = TypeIdxs[T];
5302 if (Idx.getIndex() == 0) {
5303 if (DoneWritingDeclsAndTypes) {
5304 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", 5304, __extension__
__PRETTY_FUNCTION__))
;
5305 return TypeIdx();
5306 }
5307
5308 // We haven't seen this type before. Assign it a new ID and put it
5309 // into the queue of types to emit.
5310 Idx = TypeIdx(NextTypeID++);
5311 DeclTypesToEmit.push(T);
5312 }
5313 return Idx;
5314 });
5315}
5316
5317TypeID ASTWriter::getTypeID(QualType T) const {
5318 assert(Context)(static_cast <bool> (Context) ? void (0) : __assert_fail
("Context", "clang/lib/Serialization/ASTWriter.cpp", 5318, __extension__
__PRETTY_FUNCTION__))
;
5319 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5320 if (T.isNull())
5321 return TypeIdx();
5322 assert(!T.getLocalFastQualifiers())(static_cast <bool> (!T.getLocalFastQualifiers()) ? void
(0) : __assert_fail ("!T.getLocalFastQualifiers()", "clang/lib/Serialization/ASTWriter.cpp"
, 5322, __extension__ __PRETTY_FUNCTION__))
;
5323
5324 TypeIdxMap::const_iterator I = TypeIdxs.find(T);
5325 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", 5325, __extension__
__PRETTY_FUNCTION__))
;
5326 return I->second;
5327 });
5328}
5329
5330void ASTWriter::AddDeclRef(const Decl *D, RecordDataImpl &Record) {
5331 Record.push_back(GetDeclRef(D));
5332}
5333
5334DeclID ASTWriter::GetDeclRef(const Decl *D) {
5335 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", 5335, __extension__
__PRETTY_FUNCTION__))
;
5336
5337 if (!D) {
5338 return 0;
5339 }
5340
5341 // If D comes from an AST file, its declaration ID is already known and
5342 // fixed.
5343 if (D->isFromASTFile())
5344 return D->getGlobalID();
5345
5346 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", 5346, __extension__
__PRETTY_FUNCTION__))
;
5347 DeclID &ID = DeclIDs[D];
5348 if (ID == 0) {
5349 if (DoneWritingDeclsAndTypes) {
5350 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", 5350, __extension__
__PRETTY_FUNCTION__))
;
5351 return 0;
5352 }
5353
5354 // We haven't seen this declaration before. Give it a new ID and
5355 // enqueue it in the list of declarations to emit.
5356 ID = NextDeclID++;
5357 DeclTypesToEmit.push(const_cast<Decl *>(D));
5358 }
5359
5360 return ID;
5361}
5362
5363DeclID ASTWriter::getDeclID(const Decl *D) {
5364 if (!D)
5365 return 0;
5366
5367 // If D comes from an AST file, its declaration ID is already known and
5368 // fixed.
5369 if (D->isFromASTFile())
5370 return D->getGlobalID();
5371
5372 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", 5372, __extension__
__PRETTY_FUNCTION__))
;
5373 return DeclIDs[D];
5374}
5375
5376void ASTWriter::associateDeclWithFile(const Decl *D, DeclID ID) {
5377 assert(ID)(static_cast <bool> (ID) ? void (0) : __assert_fail ("ID"
, "clang/lib/Serialization/ASTWriter.cpp", 5377, __extension__
__PRETTY_FUNCTION__))
;
5378 assert(D)(static_cast <bool> (D) ? void (0) : __assert_fail ("D"
, "clang/lib/Serialization/ASTWriter.cpp", 5378, __extension__
__PRETTY_FUNCTION__))
;
5379
5380 SourceLocation Loc = D->getLocation();
5381 if (Loc.isInvalid())
5382 return;
5383
5384 // We only keep track of the file-level declarations of each file.
5385 if (!D->getLexicalDeclContext()->isFileContext())
5386 return;
5387 // FIXME: ParmVarDecls that are part of a function type of a parameter of
5388 // a function/objc method, should not have TU as lexical context.
5389 // TemplateTemplateParmDecls that are part of an alias template, should not
5390 // have TU as lexical context.
5391 if (isa<ParmVarDecl>(D) || isa<TemplateTemplateParmDecl>(D))
5392 return;
5393
5394 SourceManager &SM = Context->getSourceManager();
5395 SourceLocation FileLoc = SM.getFileLoc(Loc);
5396 assert(SM.isLocalSourceLocation(FileLoc))(static_cast <bool> (SM.isLocalSourceLocation(FileLoc))
? void (0) : __assert_fail ("SM.isLocalSourceLocation(FileLoc)"
, "clang/lib/Serialization/ASTWriter.cpp", 5396, __extension__
__PRETTY_FUNCTION__))
;
5397 FileID FID;
5398 unsigned Offset;
5399 std::tie(FID, Offset) = SM.getDecomposedLoc(FileLoc);
5400 if (FID.isInvalid())
5401 return;
5402 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"
, 5402, __extension__ __PRETTY_FUNCTION__))
;
5403
5404 std::unique_ptr<DeclIDInFileInfo> &Info = FileDeclIDs[FID];
5405 if (!Info)
5406 Info = std::make_unique<DeclIDInFileInfo>();
5407
5408 std::pair<unsigned, serialization::DeclID> LocDecl(Offset, ID);
5409 LocDeclIDsTy &Decls = Info->DeclIDs;
5410
5411 if (Decls.empty() || Decls.back().first <= Offset) {
5412 Decls.push_back(LocDecl);
5413 return;
5414 }
5415
5416 LocDeclIDsTy::iterator I =
5417 llvm::upper_bound(Decls, LocDecl, llvm::less_first());
5418
5419 Decls.insert(I, LocDecl);
5420}
5421
5422unsigned ASTWriter::getAnonymousDeclarationNumber(const NamedDecl *D) {
5423 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", 5424, __extension__
__PRETTY_FUNCTION__))
5424 "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", 5424, __extension__
__PRETTY_FUNCTION__))
;
5425
5426 // Number the anonymous declarations within this context, if we've not
5427 // already done so.
5428 auto It = AnonymousDeclarationNumbers.find(D);
5429 if (It == AnonymousDeclarationNumbers.end()) {
5430 auto *DC = D->getLexicalDeclContext();
5431 numberAnonymousDeclsWithin(DC, [&](const NamedDecl *ND, unsigned Number) {
5432 AnonymousDeclarationNumbers[ND] = Number;
5433 });
5434
5435 It = AnonymousDeclarationNumbers.find(D);
5436 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", 5437, __extension__
__PRETTY_FUNCTION__))
5437 "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", 5437, __extension__
__PRETTY_FUNCTION__))
;
5438 }
5439
5440 return It->second;
5441}
5442
5443void ASTRecordWriter::AddDeclarationNameLoc(const DeclarationNameLoc &DNLoc,
5444 DeclarationName Name) {
5445 switch (Name.getNameKind()) {
5446 case DeclarationName::CXXConstructorName:
5447 case DeclarationName::CXXDestructorName:
5448 case DeclarationName::CXXConversionFunctionName:
5449 AddTypeSourceInfo(DNLoc.getNamedTypeInfo());
5450 break;
5451
5452 case DeclarationName::CXXOperatorName:
5453 AddSourceRange(DNLoc.getCXXOperatorNameRange());
5454 break;
5455
5456 case DeclarationName::CXXLiteralOperatorName:
5457 AddSourceLocation(DNLoc.getCXXLiteralOperatorNameLoc());
5458 break;
5459
5460 case DeclarationName::Identifier:
5461 case DeclarationName::ObjCZeroArgSelector:
5462 case DeclarationName::ObjCOneArgSelector:
5463 case DeclarationName::ObjCMultiArgSelector:
5464 case DeclarationName::CXXUsingDirective:
5465 case DeclarationName::CXXDeductionGuideName:
5466 break;
5467 }
5468}
5469
5470void ASTRecordWriter::AddDeclarationNameInfo(
5471 const DeclarationNameInfo &NameInfo) {
5472 AddDeclarationName(NameInfo.getName());
5473 AddSourceLocation(NameInfo.getLoc());
5474 AddDeclarationNameLoc(NameInfo.getInfo(), NameInfo.getName());
5475}
5476
5477void ASTRecordWriter::AddQualifierInfo(const QualifierInfo &Info) {
5478 AddNestedNameSpecifierLoc(Info.QualifierLoc);
5479 Record->push_back(Info.NumTemplParamLists);
5480 for (unsigned i = 0, e = Info.NumTemplParamLists; i != e; ++i)
5481 AddTemplateParameterList(Info.TemplParamLists[i]);
5482}
5483
5484void ASTRecordWriter::AddNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS) {
5485 // Nested name specifiers usually aren't too long. I think that 8 would
5486 // typically accommodate the vast majority.
5487 SmallVector<NestedNameSpecifierLoc , 8> NestedNames;
5488
5489 // Push each of the nested-name-specifiers's onto a stack for
5490 // serialization in reverse order.
5491 while (NNS) {
5492 NestedNames.push_back(NNS);
5493 NNS = NNS.getPrefix();
5494 }
5495
5496 Record->push_back(NestedNames.size());
5497 while(!NestedNames.empty()) {
5498 NNS = NestedNames.pop_back_val();
5499 NestedNameSpecifier::SpecifierKind Kind
5500 = NNS.getNestedNameSpecifier()->getKind();
5501 Record->push_back(Kind);
5502 switch (Kind) {
5503 case NestedNameSpecifier::Identifier:
5504 AddIdentifierRef(NNS.getNestedNameSpecifier()->getAsIdentifier());
5505 AddSourceRange(NNS.getLocalSourceRange());
5506 break;
5507
5508 case NestedNameSpecifier::Namespace:
5509 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespace());
5510 AddSourceRange(NNS.getLocalSourceRange());
5511 break;
5512
5513 case NestedNameSpecifier::NamespaceAlias:
5514 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespaceAlias());
5515 AddSourceRange(NNS.getLocalSourceRange());
5516 break;
5517
5518 case NestedNameSpecifier::TypeSpec:
5519 case NestedNameSpecifier::TypeSpecWithTemplate:
5520 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5521 AddTypeRef(NNS.getTypeLoc().getType());
5522 AddTypeLoc(NNS.getTypeLoc());
5523 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5524 break;
5525
5526 case NestedNameSpecifier::Global:
5527 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5528 break;
5529
5530 case NestedNameSpecifier::Super:
5531 AddDeclRef(NNS.getNestedNameSpecifier()->getAsRecordDecl());
5532 AddSourceRange(NNS.getLocalSourceRange());
5533 break;
5534 }
5535 }
5536}
5537
5538void ASTRecordWriter::AddTemplateParameterList(
5539 const TemplateParameterList *TemplateParams) {
5540 assert(TemplateParams && "No TemplateParams!")(static_cast <bool> (TemplateParams && "No TemplateParams!"
) ? void (0) : __assert_fail ("TemplateParams && \"No TemplateParams!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5540, __extension__
__PRETTY_FUNCTION__))
;
5541 AddSourceLocation(TemplateParams->getTemplateLoc());
5542 AddSourceLocation(TemplateParams->getLAngleLoc());
5543 AddSourceLocation(TemplateParams->getRAngleLoc());
5544
5545 Record->push_back(TemplateParams->size());
5546 for (const auto &P : *TemplateParams)
5547 AddDeclRef(P);
5548 if (const Expr *RequiresClause = TemplateParams->getRequiresClause()) {
5549 Record->push_back(true);
5550 AddStmt(const_cast<Expr*>(RequiresClause));
5551 } else {
5552 Record->push_back(false);
5553 }
5554}
5555
5556/// Emit a template argument list.
5557void ASTRecordWriter::AddTemplateArgumentList(
5558 const TemplateArgumentList *TemplateArgs) {
5559 assert(TemplateArgs && "No TemplateArgs!")(static_cast <bool> (TemplateArgs && "No TemplateArgs!"
) ? void (0) : __assert_fail ("TemplateArgs && \"No TemplateArgs!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5559, __extension__
__PRETTY_FUNCTION__))
;
5560 Record->push_back(TemplateArgs->size());
5561 for (int i = 0, e = TemplateArgs->size(); i != e; ++i)
5562 AddTemplateArgument(TemplateArgs->get(i));
5563}
5564
5565void ASTRecordWriter::AddASTTemplateArgumentListInfo(
5566 const ASTTemplateArgumentListInfo *ASTTemplArgList) {
5567 assert(ASTTemplArgList && "No ASTTemplArgList!")(static_cast <bool> (ASTTemplArgList && "No ASTTemplArgList!"
) ? void (0) : __assert_fail ("ASTTemplArgList && \"No ASTTemplArgList!\""
, "clang/lib/Serialization/ASTWriter.cpp", 5567, __extension__
__PRETTY_FUNCTION__))
;
5568 AddSourceLocation(ASTTemplArgList->LAngleLoc);
5569 AddSourceLocation(ASTTemplArgList->RAngleLoc);
5570 Record->push_back(ASTTemplArgList->NumTemplateArgs);
5571 const TemplateArgumentLoc *TemplArgs = ASTTemplArgList->getTemplateArgs();
5572 for (int i = 0, e = ASTTemplArgList->NumTemplateArgs; i != e; ++i)
5573 AddTemplateArgumentLoc(TemplArgs[i]);
5574}
5575
5576void ASTRecordWriter::AddUnresolvedSet(const ASTUnresolvedSet &Set) {
5577 Record->push_back(Set.size());
5578 for (ASTUnresolvedSet::const_iterator
5579 I = Set.begin(), E = Set.end(); I != E; ++I) {
5580 AddDeclRef(I.getDecl());
5581 Record->push_back(I.getAccess());
5582 }
5583}
5584
5585// FIXME: Move this out of the main ASTRecordWriter interface.
5586void ASTRecordWriter::AddCXXBaseSpecifier(const CXXBaseSpecifier &Base) {
5587 Record->push_back(Base.isVirtual());
5588 Record->push_back(Base.isBaseOfClass());
5589 Record->push_back(Base.getAccessSpecifierAsWritten());
5590 Record->push_back(Base.getInheritConstructors());
5591 AddTypeSourceInfo(Base.getTypeSourceInfo());
5592 AddSourceRange(Base.getSourceRange());
5593 AddSourceLocation(Base.isPackExpansion()? Base.getEllipsisLoc()
5594 : SourceLocation());
5595}
5596
5597static uint64_t EmitCXXBaseSpecifiers(ASTWriter &W,
5598 ArrayRef<CXXBaseSpecifier> Bases) {
5599 ASTWriter::RecordData Record;
5600 ASTRecordWriter Writer(W, Record);
5601 Writer.push_back(Bases.size());
5602
5603 for (auto &Base : Bases)
5604 Writer.AddCXXBaseSpecifier(Base);
5605
5606 return Writer.Emit(serialization::DECL_CXX_BASE_SPECIFIERS);
5607}
5608
5609// FIXME: Move this out of the main ASTRecordWriter interface.
5610void ASTRecordWriter::AddCXXBaseSpecifiers(ArrayRef<CXXBaseSpecifier> Bases) {
5611 AddOffset(EmitCXXBaseSpecifiers(*Writer, Bases));
5612}
5613
5614static uint64_t
5615EmitCXXCtorInitializers(ASTWriter &W,
5616 ArrayRef<CXXCtorInitializer *> CtorInits) {
5617 ASTWriter::RecordData Record;
5618 ASTRecordWriter Writer(W, Record);
5619 Writer.push_back(CtorInits.size());
5620
5621 for (auto *Init : CtorInits) {
5622 if (Init->isBaseInitializer()) {
5623 Writer.push_back(CTOR_INITIALIZER_BASE);
5624 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5625 Writer.push_back(Init->isBaseVirtual());
5626 } else if (Init->isDelegatingInitializer()) {
5627 Writer.push_back(CTOR_INITIALIZER_DELEGATING);
5628 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5629 } else if (Init->isMemberInitializer()){
5630 Writer.push_back(CTOR_INITIALIZER_MEMBER);
5631 Writer.AddDeclRef(Init->getMember());
5632 } else {
5633 Writer.push_back(CTOR_INITIALIZER_INDIRECT_MEMBER);
5634 Writer.AddDeclRef(Init->getIndirectMember());
5635 }
5636
5637 Writer.AddSourceLocation(Init->getMemberLocation());
5638 Writer.AddStmt(Init->getInit());
5639 Writer.AddSourceLocation(Init->getLParenLoc());
5640 Writer.AddSourceLocation(Init->getRParenLoc());
5641 Writer.push_back(Init->isWritten());
5642 if (Init->isWritten())
5643 Writer.push_back(Init->getSourceOrder());
5644 }
5645
5646 return Writer.Emit(serialization::DECL_CXX_CTOR_INITIALIZERS);
5647}
5648
5649// FIXME: Move this out of the main ASTRecordWriter interface.
5650void ASTRecordWriter::AddCXXCtorInitializers(
5651 ArrayRef<CXXCtorInitializer *> CtorInits) {
5652 AddOffset(EmitCXXCtorInitializers(*Writer, CtorInits));
5653}
5654
5655void ASTRecordWriter::AddCXXDefinitionData(const CXXRecordDecl *D) {
5656 auto &Data = D->data();
5657 Record->push_back(Data.IsLambda);
5658
5659 #define FIELD(Name, Width, Merge) \
5660 Record->push_back(Data.Name);
5661 #include "clang/AST/CXXRecordDeclDefinitionBits.def"
5662
5663 // getODRHash will compute the ODRHash if it has not been previously computed.
5664 Record->push_back(D->getODRHash());
5665 bool ModulesDebugInfo =
5666 Writer->Context->getLangOpts().ModulesDebugInfo && !D->isDependentType();
5667 Record->push_back(ModulesDebugInfo);
5668 if (ModulesDebugInfo)
5669 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(D));
5670
5671 // IsLambda bit is already saved.
5672
5673 Record->push_back(Data.NumBases);
5674 if (Data.NumBases > 0)
5675 AddCXXBaseSpecifiers(Data.bases());
5676
5677 // FIXME: Make VBases lazily computed when needed to avoid storing them.
5678 Record->push_back(Data.NumVBases);
5679 if (Data.NumVBases > 0)
5680 AddCXXBaseSpecifiers(Data.vbases());
5681
5682 AddUnresolvedSet(Data.Conversions.get(*Writer->Context));
5683 Record->push_back(Data.ComputedVisibleConversions);
5684 if (Data.ComputedVisibleConversions)
5685 AddUnresolvedSet(Data.VisibleConversions.get(*Writer->Context));
5686 // Data.Definition is the owning decl, no need to write it.
5687 AddDeclRef(D->getFirstFriend());
5688
5689 // Add lambda-specific data.
5690 if (Data.IsLambda) {
5691 auto &Lambda = D->getLambdaData();
5692 Record->push_back(Lambda.Dependent);
5693 Record->push_back(Lambda.IsGenericLambda);
5694 Record->push_back(Lambda.CaptureDefault);
5695 Record->push_back(Lambda.NumCaptures);
5696 Record->push_back(Lambda.NumExplicitCaptures);
5697 Record->push_back(Lambda.HasKnownInternalLinkage);
5698 Record->push_back(Lambda.ManglingNumber);
5699 Record->push_back(D->getDeviceLambdaManglingNumber());
5700 AddDeclRef(D->getLambdaContextDecl());
5701 AddTypeSourceInfo(Lambda.MethodTyInfo);
5702 for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
5703 const LambdaCapture &Capture = Lambda.Captures[I];
5704 AddSourceLocation(Capture.getLocation());
5705 Record->push_back(Capture.isImplicit());
5706 Record->push_back(Capture.getCaptureKind());
5707 switch (Capture.getCaptureKind()) {
5708 case LCK_StarThis:
5709 case LCK_This:
5710 case LCK_VLAType:
5711 break;
5712 case LCK_ByCopy:
5713 case LCK_ByRef:
5714 VarDecl *Var =
5715 Capture.capturesVariable() ? Capture.getCapturedVar() : nullptr;
5716 AddDeclRef(Var);
5717 AddSourceLocation(Capture.isPackExpansion() ? Capture.getEllipsisLoc()
5718 : SourceLocation());
5719 break;
5720 }
5721 }
5722 }
5723}
5724
5725void ASTRecordWriter::AddVarDeclInit(const VarDecl *VD) {
5726 const Expr *Init = VD->getInit();
5727 if (!Init) {
5728 push_back(0);
5729 return;
5730 }
5731
5732 unsigned Val = 1;
5733 if (EvaluatedStmt *ES = VD->getEvaluatedStmt()) {
5734 Val |= (ES->HasConstantInitialization ? 2 : 0);
5735 Val |= (ES->HasConstantDestruction ? 4 : 0);
5736 // FIXME: Also emit the constant initializer value.
5737 }
5738 push_back(Val);
5739 writeStmtRef(Init);
5740}
5741
5742void ASTWriter::ReaderInitialized(ASTReader *Reader) {
5743 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", 5743, __extension__
__PRETTY_FUNCTION__))
;
5744 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", 5744, __extension__
__PRETTY_FUNCTION__))
;
5745 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", 5751, __extension__
__PRETTY_FUNCTION__))
5746 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", 5751, __extension__
__PRETTY_FUNCTION__))
5747 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", 5751, __extension__
__PRETTY_FUNCTION__))
5748 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", 5751, __extension__
__PRETTY_FUNCTION__))
5749 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", 5751, __extension__
__PRETTY_FUNCTION__))
5750 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", 5751, __extension__
__PRETTY_FUNCTION__))
5751 "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", 5751, __extension__
__PRETTY_FUNCTION__))
;
5752
5753 Chain = Reader;
5754
5755 // Note, this will get called multiple times, once one the reader starts up
5756 // and again each time it's done reading a PCH or module.
5757 FirstDeclID = NUM_PREDEF_DECL_IDS + Chain->getTotalNumDecls();
5758 FirstTypeID = NUM_PREDEF_TYPE_IDS + Chain->getTotalNumTypes();
5759 FirstIdentID = NUM_PREDEF_IDENT_IDS + Chain->getTotalNumIdentifiers();
5760 FirstMacroID = NUM_PREDEF_MACRO_IDS + Chain->getTotalNumMacros();
5761 FirstSubmoduleID = NUM_PREDEF_SUBMODULE_IDS + Chain->getTotalNumSubmodules();
5762 FirstSelectorID = NUM_PREDEF_SELECTOR_IDS + Chain->getTotalNumSelectors();
5763 NextDeclID = FirstDeclID;
5764 NextTypeID = FirstTypeID;
5765 NextIdentID = FirstIdentID;
5766 NextMacroID = FirstMacroID;
5767 NextSelectorID = FirstSelectorID;
5768 NextSubmoduleID = FirstSubmoduleID;
5769}
5770
5771void ASTWriter::IdentifierRead(IdentID ID, IdentifierInfo *II) {
5772 // Always keep the highest ID. See \p TypeRead() for more information.
5773 IdentID &StoredID = IdentifierIDs[II];
5774 if (ID > StoredID)
5775 StoredID = ID;
5776}
5777
5778void ASTWriter::MacroRead(serialization::MacroID ID, MacroInfo *MI) {
5779 // Always keep the highest ID. See \p TypeRead() for more information.
5780 MacroID &StoredID = MacroIDs[MI];
5781 if (ID > StoredID)
5782 StoredID = ID;
5783}
5784
5785void ASTWriter::TypeRead(TypeIdx Idx, QualType T) {
5786 // Always take the highest-numbered type index. This copes with an interesting
5787 // case for chained AST writing where we schedule writing the type and then,
5788 // later, deserialize the type from another AST. In this case, we want to
5789 // keep the higher-numbered entry so that we can properly write it out to
5790 // the AST file.
5791 TypeIdx &StoredIdx = TypeIdxs[T];
5792 if (Idx.getIndex() >= StoredIdx.getIndex())
5793 StoredIdx = Idx;
5794}
5795
5796void ASTWriter::SelectorRead(SelectorID ID, Selector S) {
5797 // Always keep the highest ID. See \p TypeRead() for more information.
5798 SelectorID &StoredID = SelectorIDs[S];
5799 if (ID > StoredID)
5800 StoredID = ID;
5801}
5802
5803void ASTWriter::MacroDefinitionRead(serialization::PreprocessedEntityID ID,
5804 MacroDefinitionRecord *MD) {
5805 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", 5805, __extension__
__PRETTY_FUNCTION__))
;
5806 MacroDefinitions[MD] = ID;
5807}
5808
5809void ASTWriter::ModuleRead(serialization::SubmoduleID ID, Module *Mod) {
5810 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", 5810, __extension__
__PRETTY_FUNCTION__))
;
5811 SubmoduleIDs[Mod] = ID;
5812}
5813
5814void ASTWriter::CompletedTagDefinition(const TagDecl *D) {
5815 if (Chain && Chain->isProcessingUpdateRecords()) return;
5816 assert(D->isCompleteDefinition())(static_cast <bool> (D->isCompleteDefinition()) ? void
(0) : __assert_fail ("D->isCompleteDefinition()", "clang/lib/Serialization/ASTWriter.cpp"
, 5816, __extension__ __PRETTY_FUNCTION__))
;
5817 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", 5817, __extension__
__PRETTY_FUNCTION__))
;
5818 if (auto *RD = dyn_cast<CXXRecordDecl>(D)) {
5819 // We are interested when a PCH decl is modified.
5820 if (RD->isFromASTFile()) {
5821 // A forward reference was mutated into a definition. Rewrite it.
5822 // FIXME: This happens during template instantiation, should we
5823 // have created a new definition decl instead ?
5824 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", 5825, __extension__
__PRETTY_FUNCTION__))
5825 "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", 5825, __extension__
__PRETTY_FUNCTION__))
;
5826 DeclUpdates[RD].push_back(
5827 DeclUpdate(UPD_CXX_INSTANTIATED_CLASS_DEFINITION));
5828 }
5829 }
5830}
5831
5832static bool isImportedDeclContext(ASTReader *Chain, const Decl *D) {
5833 if (D->isFromASTFile())
5834 return true;
5835
5836 // The predefined __va_list_tag struct is imported if we imported any decls.
5837 // FIXME: This is a gross hack.
5838 return D == D->getASTContext().getVaListTagDecl();
5839}
5840
5841void ASTWriter::AddedVisibleDecl(const DeclContext *DC, const Decl *D) {
5842 if (Chain && Chain->isProcessingUpdateRecords()) return;
5843 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", 5844, __extension__
__PRETTY_FUNCTION__))
5844 "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", 5844, __extension__
__PRETTY_FUNCTION__))
;
5845
5846 // TU is handled elsewhere.
5847 if (isa<TranslationUnitDecl>(DC))
5848 return;
5849
5850 // Namespaces are handled elsewhere, except for template instantiations of
5851 // FunctionTemplateDecls in namespaces. We are interested in cases where the
5852 // local instantiations are added to an imported context. Only happens when
5853 // adding ADL lookup candidates, for example templated friends.
5854 if (isa<NamespaceDecl>(DC) && D->getFriendObjectKind() == Decl::FOK_None &&
5855 !isa<FunctionTemplateDecl>(D))
5856 return;
5857
5858 // We're only interested in cases where a local declaration is added to an
5859 // imported context.
5860 if (D->isFromASTFile() || !isImportedDeclContext(Chain, cast<Decl>(DC)))
5861 return;
5862
5863 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", 5863, __extension__
__PRETTY_FUNCTION__))
;
5864 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", 5864, __extension__
__PRETTY_FUNCTION__))
;
5865 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", 5865, __extension__
__PRETTY_FUNCTION__))
;
5866 if (UpdatedDeclContexts.insert(DC) && !cast<Decl>(DC)->isFromASTFile()) {
5867 // We're adding a visible declaration to a predefined decl context. Ensure
5868 // that we write out all of its lookup results so we don't get a nasty
5869 // surprise when we try to emit its lookup table.
5870 for (auto *Child : DC->decls())
5871 DeclsToEmitEvenIfUnreferenced.push_back(Child);
5872 }
5873 DeclsToEmitEvenIfUnreferenced.push_back(D);
5874}
5875
5876void ASTWriter::AddedCXXImplicitMember(const CXXRecordDecl *RD, const Decl *D) {
5877 if (Chain && Chain->isProcessingUpdateRecords()) return;
5878 assert(D->isImplicit())(static_cast <bool> (D->isImplicit()) ? void (0) : __assert_fail
("D->isImplicit()", "clang/lib/Serialization/ASTWriter.cpp"
, 5878, __extension__ __PRETTY_FUNCTION__))
;
5879
5880 // We're only interested in cases where a local declaration is added to an
5881 // imported context.
5882 if (D->isFromASTFile() || !isImportedDeclContext(Chain, RD))
5883 return;
5884
5885 if (!isa<CXXMethodDecl>(D))
5886 return;
5887
5888 // A decl coming from PCH was modified.
5889 assert(RD->isCompleteDefinition())(static_cast <bool> (RD->isCompleteDefinition()) ? void
(0) : __assert_fail ("RD->isCompleteDefinition()", "clang/lib/Serialization/ASTWriter.cpp"
, 5889, __extension__ __PRETTY_FUNCTION__))
;
5890 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", 5890, __extension__
__PRETTY_FUNCTION__))
;
5891 DeclUpdates[RD].push_back(DeclUpdate(UPD_CXX_ADDED_IMPLICIT_MEMBER, D));
5892}
5893
5894void ASTWriter::ResolvedExceptionSpec(const FunctionDecl *FD) {
5895 if (Chain && Chain->isProcessingUpdateRecords()) return;
5896 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", 5896, __extension__
__PRETTY_FUNCTION__))
;
5897 if (!Chain) return;
5898 Chain->forEachImportedKeyDecl(FD, [&](const Decl *D) {
5899 // If we don't already know the exception specification for this redecl
5900 // chain, add an update record for it.
5901 if (isUnresolvedExceptionSpec(cast<FunctionDecl>(D)
5902 ->getType()
5903 ->castAs<FunctionProtoType>()
5904 ->getExceptionSpecType()))
5905 DeclUpdates[D].push_back(UPD_CXX_RESOLVED_EXCEPTION_SPEC);
5906 });
5907}
5908
5909void ASTWriter::DeducedReturnType(const FunctionDecl *FD, QualType ReturnType) {
5910 if (Chain && Chain->isProcessingUpdateRecords()) return;
5911 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", 5911, __extension__
__PRETTY_FUNCTION__))
;
5912 if (!Chain) return;
5913 Chain->forEachImportedKeyDecl(FD, [&](const Decl *D) {
5914 DeclUpdates[D].push_back(
5915 DeclUpdate(UPD_CXX_DEDUCED_RETURN_TYPE, ReturnType));
5916 });
5917}
5918
5919void ASTWriter::ResolvedOperatorDelete(const CXXDestructorDecl *DD,
5920 const FunctionDecl *Delete,
5921 Expr *ThisArg) {
5922 if (Chain && Chain->isProcessingUpdateRecords()) return;
5923 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", 5923, __extension__
__PRETTY_FUNCTION__))
;
5924 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", 5924, __extension__
__PRETTY_FUNCTION__))
;
5925 if (!Chain) return;
5926 Chain->forEachImportedKeyDecl(DD, [&](const Decl *D) {
5927 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_RESOLVED_DTOR_DELETE, Delete));
5928 });
5929}
5930
5931void ASTWriter::CompletedImplicitDefinition(const FunctionDecl *D) {
5932 if (Chain && Chain->isProcessingUpdateRecords()) return;
5933 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", 5933, __extension__
__PRETTY_FUNCTION__))
;
5934 if (!D->isFromASTFile())
5935 return; // Declaration not imported from PCH.
5936
5937 // Implicit function decl from a PCH was defined.
5938 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_FUNCTION_DEFINITION));
5939}
5940
5941void ASTWriter::VariableDefinitionInstantiated(const VarDecl *D) {
5942 if (Chain && Chain->isProcessingUpdateRecords()) return;
5943 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", 5943, __extension__
__PRETTY_FUNCTION__))
;
5944 if (!D->isFromASTFile())
5945 return;
5946
5947 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_VAR_DEFINITION));
5948}
5949
5950void ASTWriter::FunctionDefinitionInstantiated(const FunctionDecl *D) {
5951 if (Chain && Chain->isProcessingUpdateRecords()) return;
5952 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", 5952, __extension__
__PRETTY_FUNCTION__))
;
5953 if (!D->isFromASTFile())
5954 return;
5955
5956 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_FUNCTION_DEFINITION));
5957}
5958
5959void ASTWriter::InstantiationRequested(const ValueDecl *D) {
5960 if (Chain && Chain->isProcessingUpdateRecords()) return;
5961 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", 5961, __extension__
__PRETTY_FUNCTION__))
;
5962 if (!D->isFromASTFile())
5963 return;
5964
5965 // Since the actual instantiation is delayed, this really means that we need
5966 // to update the instantiation location.
5967 SourceLocation POI;
5968 if (auto *VD = dyn_cast<VarDecl>(D))
5969 POI = VD->getPointOfInstantiation();
5970 else
5971 POI = cast<FunctionDecl>(D)->getPointOfInstantiation();
5972 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_POINT_OF_INSTANTIATION, POI));
5973}
5974
5975void ASTWriter::DefaultArgumentInstantiated(const ParmVarDecl *D) {
5976 if (Chain && Chain->isProcessingUpdateRecords()) return;
5977 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", 5977, __extension__
__PRETTY_FUNCTION__))
;
5978 if (!D->isFromASTFile())
5979 return;
5980
5981 DeclUpdates[D].push_back(
5982 DeclUpdate(UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT, D));
5983}
5984
5985void ASTWriter::DefaultMemberInitializerInstantiated(const FieldDecl *D) {
5986 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", 5986, __extension__
__PRETTY_FUNCTION__))
;
5987 if (!D->isFromASTFile())
5988 return;
5989
5990 DeclUpdates[D].push_back(
5991 DeclUpdate(UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER, D));
5992}
5993
5994void ASTWriter::AddedObjCCategoryToInterface(const ObjCCategoryDecl *CatD,
5995 const ObjCInterfaceDecl *IFD) {
5996 if (Chain && Chain->isProcessingUpdateRecords()) return;
5997 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", 5997, __extension__
__PRETTY_FUNCTION__))
;
5998 if (!IFD->isFromASTFile())
5999 return; // Declaration not imported from PCH.
6000
6001 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", 6001, __extension__
__PRETTY_FUNCTION__))
;
6002 ObjCClassesWithCategories.insert(
6003 const_cast<ObjCInterfaceDecl *>(IFD->getDefinition()));
6004}
6005
6006void ASTWriter::DeclarationMarkedUsed(const Decl *D) {
6007 if (Chain && Chain->isProcessingUpdateRecords()) return;
6008 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", 6008, __extension__
__PRETTY_FUNCTION__))
;
6009
6010 // If there is *any* declaration of the entity that's not from an AST file,
6011 // we can skip writing the update record. We make sure that isUsed() triggers
6012 // completion of the redeclaration chain of the entity.
6013 for (auto Prev = D->getMostRecentDecl(); Prev; Prev = Prev->getPreviousDecl())
6014 if (IsLocalDecl(Prev))
6015 return;
6016
6017 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_MARKED_USED));
6018}
6019
6020void ASTWriter::DeclarationMarkedOpenMPThreadPrivate(const Decl *D) {
6021 if (Chain && Chain->isProcessingUpdateRecords()) return;
6022 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", 6022, __extension__
__PRETTY_FUNCTION__))
;
6023 if (!D->isFromASTFile())
6024 return;
6025
6026 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_MARKED_OPENMP_THREADPRIVATE));
6027}
6028
6029void ASTWriter::DeclarationMarkedOpenMPAllocate(const Decl *D, const Attr *A) {
6030 if (Chain && Chain->isProcessingUpdateRecords()) return;
6031 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", 6031, __extension__
__PRETTY_FUNCTION__))
;
6032 if (!D->isFromASTFile())
6033 return;
6034