Bug Summary

File:clang/lib/Serialization/ASTWriter.cpp
Warning:line 1838, column 7
Potential memory leak

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -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 -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -tune-cpu generic -fno-split-dwarf-inlining -debugger-tuning=gdb -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-12/lib/clang/12.0.0 -D CLANG_VENDOR="Debian " -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/build-llvm/tools/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/include -I /build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/build-llvm/include -I /build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/llvm/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/backward -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-12/lib/clang/12.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-comment -std=c++14 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/build-llvm/tools/clang/lib/Serialization -fdebug-prefix-map=/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b=. -ferror-limit 19 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -o /tmp/scan-build-2020-09-17-195756-12974-1 -x c++ /build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/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/MemoryBuffer.h"
99#include "llvm/Support/OnDiskHashTable.h"
100#include "llvm/Support/Path.h"
101#include "llvm/Support/SHA1.h"
102#include "llvm/Support/VersionTuple.h"
103#include "llvm/Support/raw_ostream.h"
104#include <algorithm>
105#include <cassert>
106#include <cstdint>
107#include <cstdlib>
108#include <cstring>
109#include <ctime>
110#include <deque>
111#include <limits>
112#include <memory>
113#include <queue>
114#include <tuple>
115#include <utility>
116#include <vector>
117
118using namespace clang;
119using namespace clang::serialization;
120
121template <typename T, typename Allocator>
122static StringRef bytes(const std::vector<T, Allocator> &v) {
123 if (v.empty()) return StringRef();
124 return StringRef(reinterpret_cast<const char*>(&v[0]),
125 sizeof(T) * v.size());
126}
127
128template <typename T>
129static StringRef bytes(const SmallVectorImpl<T> &v) {
130 return StringRef(reinterpret_cast<const char*>(v.data()),
131 sizeof(T) * v.size());
132}
133
134//===----------------------------------------------------------------------===//
135// Type serialization
136//===----------------------------------------------------------------------===//
137
138static TypeCode getTypeCodeForTypeClass(Type::TypeClass id) {
139 switch (id) {
140#define TYPE_BIT_CODE(CLASS_ID, CODE_ID, CODE_VALUE) \
141 case Type::CLASS_ID: return TYPE_##CODE_ID;
142#include "clang/Serialization/TypeBitCodes.def"
143 case Type::Builtin:
144 llvm_unreachable("shouldn't be serializing a builtin type this way")::llvm::llvm_unreachable_internal("shouldn't be serializing a builtin type this way"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 144)
;
145 }
146 llvm_unreachable("bad type kind")::llvm::llvm_unreachable_internal("bad type kind", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 146)
;
147}
148
149namespace {
150
151class ASTTypeWriter {
152 ASTWriter &Writer;
153 ASTWriter::RecordData Record;
154 ASTRecordWriter BasicWriter;
155
156public:
157 ASTTypeWriter(ASTWriter &Writer)
158 : Writer(Writer), BasicWriter(Writer, Record) {}
159
160 uint64_t write(QualType T) {
161 if (T.hasLocalNonFastQualifiers()) {
162 Qualifiers Qs = T.getLocalQualifiers();
163 BasicWriter.writeQualType(T.getLocalUnqualifiedType());
164 BasicWriter.writeQualifiers(Qs);
165 return BasicWriter.Emit(TYPE_EXT_QUAL, Writer.getTypeExtQualAbbrev());
166 }
167
168 const Type *typePtr = T.getTypePtr();
169 serialization::AbstractTypeWriter<ASTRecordWriter> atw(BasicWriter);
170 atw.write(typePtr);
171 return BasicWriter.Emit(getTypeCodeForTypeClass(typePtr->getTypeClass()),
172 /*abbrev*/ 0);
173 }
174};
175
176class TypeLocWriter : public TypeLocVisitor<TypeLocWriter> {
177 ASTRecordWriter &Record;
178
179public:
180 TypeLocWriter(ASTRecordWriter &Record) : Record(Record) {}
181
182#define ABSTRACT_TYPELOC(CLASS, PARENT)
183#define TYPELOC(CLASS, PARENT) \
184 void Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc);
185#include "clang/AST/TypeLocNodes.def"
186
187 void VisitArrayTypeLoc(ArrayTypeLoc TyLoc);
188 void VisitFunctionTypeLoc(FunctionTypeLoc TyLoc);
189};
190
191} // namespace
192
193void TypeLocWriter::VisitQualifiedTypeLoc(QualifiedTypeLoc TL) {
194 // nothing to do
195}
196
197void TypeLocWriter::VisitBuiltinTypeLoc(BuiltinTypeLoc TL) {
198 Record.AddSourceLocation(TL.getBuiltinLoc());
199 if (TL.needsExtraLocalData()) {
200 Record.push_back(TL.getWrittenTypeSpec());
201 Record.push_back(TL.getWrittenSignSpec());
202 Record.push_back(TL.getWrittenWidthSpec());
203 Record.push_back(TL.hasModeAttr());
204 }
205}
206
207void TypeLocWriter::VisitComplexTypeLoc(ComplexTypeLoc TL) {
208 Record.AddSourceLocation(TL.getNameLoc());
209}
210
211void TypeLocWriter::VisitPointerTypeLoc(PointerTypeLoc TL) {
212 Record.AddSourceLocation(TL.getStarLoc());
213}
214
215void TypeLocWriter::VisitDecayedTypeLoc(DecayedTypeLoc TL) {
216 // nothing to do
217}
218
219void TypeLocWriter::VisitAdjustedTypeLoc(AdjustedTypeLoc TL) {
220 // nothing to do
221}
222
223void TypeLocWriter::VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL) {
224 Record.AddSourceLocation(TL.getCaretLoc());
225}
226
227void TypeLocWriter::VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL) {
228 Record.AddSourceLocation(TL.getAmpLoc());
229}
230
231void TypeLocWriter::VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL) {
232 Record.AddSourceLocation(TL.getAmpAmpLoc());
233}
234
235void TypeLocWriter::VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL) {
236 Record.AddSourceLocation(TL.getStarLoc());
237 Record.AddTypeSourceInfo(TL.getClassTInfo());
238}
239
240void TypeLocWriter::VisitArrayTypeLoc(ArrayTypeLoc TL) {
241 Record.AddSourceLocation(TL.getLBracketLoc());
242 Record.AddSourceLocation(TL.getRBracketLoc());
243 Record.push_back(TL.getSizeExpr() ? 1 : 0);
244 if (TL.getSizeExpr())
245 Record.AddStmt(TL.getSizeExpr());
246}
247
248void TypeLocWriter::VisitConstantArrayTypeLoc(ConstantArrayTypeLoc TL) {
249 VisitArrayTypeLoc(TL);
250}
251
252void TypeLocWriter::VisitIncompleteArrayTypeLoc(IncompleteArrayTypeLoc TL) {
253 VisitArrayTypeLoc(TL);
254}
255
256void TypeLocWriter::VisitVariableArrayTypeLoc(VariableArrayTypeLoc TL) {
257 VisitArrayTypeLoc(TL);
258}
259
260void TypeLocWriter::VisitDependentSizedArrayTypeLoc(
261 DependentSizedArrayTypeLoc TL) {
262 VisitArrayTypeLoc(TL);
263}
264
265void TypeLocWriter::VisitDependentAddressSpaceTypeLoc(
266 DependentAddressSpaceTypeLoc TL) {
267 Record.AddSourceLocation(TL.getAttrNameLoc());
268 SourceRange range = TL.getAttrOperandParensRange();
269 Record.AddSourceLocation(range.getBegin());
270 Record.AddSourceLocation(range.getEnd());
271 Record.AddStmt(TL.getAttrExprOperand());
272}
273
274void TypeLocWriter::VisitDependentSizedExtVectorTypeLoc(
275 DependentSizedExtVectorTypeLoc TL) {
276 Record.AddSourceLocation(TL.getNameLoc());
277}
278
279void TypeLocWriter::VisitVectorTypeLoc(VectorTypeLoc TL) {
280 Record.AddSourceLocation(TL.getNameLoc());
281}
282
283void TypeLocWriter::VisitDependentVectorTypeLoc(
284 DependentVectorTypeLoc TL) {
285 Record.AddSourceLocation(TL.getNameLoc());
286}
287
288void TypeLocWriter::VisitExtVectorTypeLoc(ExtVectorTypeLoc TL) {
289 Record.AddSourceLocation(TL.getNameLoc());
290}
291
292void TypeLocWriter::VisitConstantMatrixTypeLoc(ConstantMatrixTypeLoc TL) {
293 Record.AddSourceLocation(TL.getAttrNameLoc());
294 SourceRange range = TL.getAttrOperandParensRange();
295 Record.AddSourceLocation(range.getBegin());
296 Record.AddSourceLocation(range.getEnd());
297 Record.AddStmt(TL.getAttrRowOperand());
298 Record.AddStmt(TL.getAttrColumnOperand());
299}
300
301void TypeLocWriter::VisitDependentSizedMatrixTypeLoc(
302 DependentSizedMatrixTypeLoc TL) {
303 Record.AddSourceLocation(TL.getAttrNameLoc());
304 SourceRange range = TL.getAttrOperandParensRange();
305 Record.AddSourceLocation(range.getBegin());
306 Record.AddSourceLocation(range.getEnd());
307 Record.AddStmt(TL.getAttrRowOperand());
308 Record.AddStmt(TL.getAttrColumnOperand());
309}
310
311void TypeLocWriter::VisitFunctionTypeLoc(FunctionTypeLoc TL) {
312 Record.AddSourceLocation(TL.getLocalRangeBegin());
313 Record.AddSourceLocation(TL.getLParenLoc());
314 Record.AddSourceLocation(TL.getRParenLoc());
315 Record.AddSourceRange(TL.getExceptionSpecRange());
316 Record.AddSourceLocation(TL.getLocalRangeEnd());
317 for (unsigned i = 0, e = TL.getNumParams(); i != e; ++i)
318 Record.AddDeclRef(TL.getParam(i));
319}
320
321void TypeLocWriter::VisitFunctionProtoTypeLoc(FunctionProtoTypeLoc TL) {
322 VisitFunctionTypeLoc(TL);
323}
324
325void TypeLocWriter::VisitFunctionNoProtoTypeLoc(FunctionNoProtoTypeLoc TL) {
326 VisitFunctionTypeLoc(TL);
327}
328
329void TypeLocWriter::VisitUnresolvedUsingTypeLoc(UnresolvedUsingTypeLoc TL) {
330 Record.AddSourceLocation(TL.getNameLoc());
331}
332
333void TypeLocWriter::VisitTypedefTypeLoc(TypedefTypeLoc TL) {
334 Record.AddSourceLocation(TL.getNameLoc());
335}
336
337void TypeLocWriter::VisitObjCTypeParamTypeLoc(ObjCTypeParamTypeLoc TL) {
338 if (TL.getNumProtocols()) {
339 Record.AddSourceLocation(TL.getProtocolLAngleLoc());
340 Record.AddSourceLocation(TL.getProtocolRAngleLoc());
341 }
342 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
343 Record.AddSourceLocation(TL.getProtocolLoc(i));
344}
345
346void TypeLocWriter::VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL) {
347 Record.AddSourceLocation(TL.getTypeofLoc());
348 Record.AddSourceLocation(TL.getLParenLoc());
349 Record.AddSourceLocation(TL.getRParenLoc());
350}
351
352void TypeLocWriter::VisitTypeOfTypeLoc(TypeOfTypeLoc TL) {
353 Record.AddSourceLocation(TL.getTypeofLoc());
354 Record.AddSourceLocation(TL.getLParenLoc());
355 Record.AddSourceLocation(TL.getRParenLoc());
356 Record.AddTypeSourceInfo(TL.getUnderlyingTInfo());
357}
358
359void TypeLocWriter::VisitDecltypeTypeLoc(DecltypeTypeLoc TL) {
360 Record.AddSourceLocation(TL.getNameLoc());
361}
362
363void TypeLocWriter::VisitUnaryTransformTypeLoc(UnaryTransformTypeLoc TL) {
364 Record.AddSourceLocation(TL.getKWLoc());
365 Record.AddSourceLocation(TL.getLParenLoc());
366 Record.AddSourceLocation(TL.getRParenLoc());
367 Record.AddTypeSourceInfo(TL.getUnderlyingTInfo());
368}
369
370void TypeLocWriter::VisitAutoTypeLoc(AutoTypeLoc TL) {
371 Record.AddSourceLocation(TL.getNameLoc());
372 Record.push_back(TL.isConstrained());
373 if (TL.isConstrained()) {
374 Record.AddNestedNameSpecifierLoc(TL.getNestedNameSpecifierLoc());
375 Record.AddSourceLocation(TL.getTemplateKWLoc());
376 Record.AddSourceLocation(TL.getConceptNameLoc());
377 Record.AddDeclRef(TL.getFoundDecl());
378 Record.AddSourceLocation(TL.getLAngleLoc());
379 Record.AddSourceLocation(TL.getRAngleLoc());
380 for (unsigned I = 0; I < TL.getNumArgs(); ++I)
381 Record.AddTemplateArgumentLocInfo(TL.getTypePtr()->getArg(I).getKind(),
382 TL.getArgLocInfo(I));
383 }
384}
385
386void TypeLocWriter::VisitDeducedTemplateSpecializationTypeLoc(
387 DeducedTemplateSpecializationTypeLoc TL) {
388 Record.AddSourceLocation(TL.getTemplateNameLoc());
389}
390
391void TypeLocWriter::VisitRecordTypeLoc(RecordTypeLoc TL) {
392 Record.AddSourceLocation(TL.getNameLoc());
393}
394
395void TypeLocWriter::VisitEnumTypeLoc(EnumTypeLoc TL) {
396 Record.AddSourceLocation(TL.getNameLoc());
397}
398
399void TypeLocWriter::VisitAttributedTypeLoc(AttributedTypeLoc TL) {
400 Record.AddAttr(TL.getAttr());
401}
402
403void TypeLocWriter::VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL) {
404 Record.AddSourceLocation(TL.getNameLoc());
405}
406
407void TypeLocWriter::VisitSubstTemplateTypeParmTypeLoc(
408 SubstTemplateTypeParmTypeLoc TL) {
409 Record.AddSourceLocation(TL.getNameLoc());
410}
411
412void TypeLocWriter::VisitSubstTemplateTypeParmPackTypeLoc(
413 SubstTemplateTypeParmPackTypeLoc TL) {
414 Record.AddSourceLocation(TL.getNameLoc());
415}
416
417void TypeLocWriter::VisitTemplateSpecializationTypeLoc(
418 TemplateSpecializationTypeLoc TL) {
419 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
420 Record.AddSourceLocation(TL.getTemplateNameLoc());
421 Record.AddSourceLocation(TL.getLAngleLoc());
422 Record.AddSourceLocation(TL.getRAngleLoc());
423 for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i)
424 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(i).getArgument().getKind(),
425 TL.getArgLoc(i).getLocInfo());
426}
427
428void TypeLocWriter::VisitParenTypeLoc(ParenTypeLoc TL) {
429 Record.AddSourceLocation(TL.getLParenLoc());
430 Record.AddSourceLocation(TL.getRParenLoc());
431}
432
433void TypeLocWriter::VisitMacroQualifiedTypeLoc(MacroQualifiedTypeLoc TL) {
434 Record.AddSourceLocation(TL.getExpansionLoc());
435}
436
437void TypeLocWriter::VisitElaboratedTypeLoc(ElaboratedTypeLoc TL) {
438 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
439 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
440}
441
442void TypeLocWriter::VisitInjectedClassNameTypeLoc(InjectedClassNameTypeLoc TL) {
443 Record.AddSourceLocation(TL.getNameLoc());
444}
445
446void TypeLocWriter::VisitDependentNameTypeLoc(DependentNameTypeLoc TL) {
447 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
448 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
449 Record.AddSourceLocation(TL.getNameLoc());
450}
451
452void TypeLocWriter::VisitDependentTemplateSpecializationTypeLoc(
453 DependentTemplateSpecializationTypeLoc TL) {
454 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
455 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
456 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
457 Record.AddSourceLocation(TL.getTemplateNameLoc());
458 Record.AddSourceLocation(TL.getLAngleLoc());
459 Record.AddSourceLocation(TL.getRAngleLoc());
460 for (unsigned I = 0, E = TL.getNumArgs(); I != E; ++I)
461 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(I).getArgument().getKind(),
462 TL.getArgLoc(I).getLocInfo());
463}
464
465void TypeLocWriter::VisitPackExpansionTypeLoc(PackExpansionTypeLoc TL) {
466 Record.AddSourceLocation(TL.getEllipsisLoc());
467}
468
469void TypeLocWriter::VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) {
470 Record.AddSourceLocation(TL.getNameLoc());
471}
472
473void TypeLocWriter::VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) {
474 Record.push_back(TL.hasBaseTypeAsWritten());
475 Record.AddSourceLocation(TL.getTypeArgsLAngleLoc());
476 Record.AddSourceLocation(TL.getTypeArgsRAngleLoc());
477 for (unsigned i = 0, e = TL.getNumTypeArgs(); i != e; ++i)
478 Record.AddTypeSourceInfo(TL.getTypeArgTInfo(i));
479 Record.AddSourceLocation(TL.getProtocolLAngleLoc());
480 Record.AddSourceLocation(TL.getProtocolRAngleLoc());
481 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
482 Record.AddSourceLocation(TL.getProtocolLoc(i));
483}
484
485void TypeLocWriter::VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) {
486 Record.AddSourceLocation(TL.getStarLoc());
487}
488
489void TypeLocWriter::VisitAtomicTypeLoc(AtomicTypeLoc TL) {
490 Record.AddSourceLocation(TL.getKWLoc());
491 Record.AddSourceLocation(TL.getLParenLoc());
492 Record.AddSourceLocation(TL.getRParenLoc());
493}
494
495void TypeLocWriter::VisitPipeTypeLoc(PipeTypeLoc TL) {
496 Record.AddSourceLocation(TL.getKWLoc());
497}
498
499void TypeLocWriter::VisitExtIntTypeLoc(clang::ExtIntTypeLoc TL) {
500 Record.AddSourceLocation(TL.getNameLoc());
501}
502void TypeLocWriter::VisitDependentExtIntTypeLoc(
503 clang::DependentExtIntTypeLoc TL) {
504 Record.AddSourceLocation(TL.getNameLoc());
505}
506
507void ASTWriter::WriteTypeAbbrevs() {
508 using namespace llvm;
509
510 std::shared_ptr<BitCodeAbbrev> Abv;
511
512 // Abbreviation for TYPE_EXT_QUAL
513 Abv = std::make_shared<BitCodeAbbrev>();
514 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_EXT_QUAL));
515 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
516 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 3)); // Quals
517 TypeExtQualAbbrev = Stream.EmitAbbrev(std::move(Abv));
518
519 // Abbreviation for TYPE_FUNCTION_PROTO
520 Abv = std::make_shared<BitCodeAbbrev>();
521 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_FUNCTION_PROTO));
522 // FunctionType
523 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ReturnType
524 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // NoReturn
525 Abv->Add(BitCodeAbbrevOp(0)); // HasRegParm
526 Abv->Add(BitCodeAbbrevOp(0)); // RegParm
527 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 4)); // CC
528 Abv->Add(BitCodeAbbrevOp(0)); // ProducesResult
529 Abv->Add(BitCodeAbbrevOp(0)); // NoCallerSavedRegs
530 Abv->Add(BitCodeAbbrevOp(0)); // NoCfCheck
531 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // CmseNSCall
532 // FunctionProtoType
533 Abv->Add(BitCodeAbbrevOp(0)); // IsVariadic
534 Abv->Add(BitCodeAbbrevOp(0)); // HasTrailingReturn
535 Abv->Add(BitCodeAbbrevOp(0)); // TypeQuals
536 Abv->Add(BitCodeAbbrevOp(0)); // RefQualifier
537 Abv->Add(BitCodeAbbrevOp(EST_None)); // ExceptionSpec
538 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // NumParams
539 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
540 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Params
541 TypeFunctionProtoAbbrev = Stream.EmitAbbrev(std::move(Abv));
542}
543
544//===----------------------------------------------------------------------===//
545// ASTWriter Implementation
546//===----------------------------------------------------------------------===//
547
548static void EmitBlockID(unsigned ID, const char *Name,
549 llvm::BitstreamWriter &Stream,
550 ASTWriter::RecordDataImpl &Record) {
551 Record.clear();
552 Record.push_back(ID);
553 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETBID, Record);
554
555 // Emit the block name if present.
556 if (!Name || Name[0] == 0)
557 return;
558 Record.clear();
559 while (*Name)
560 Record.push_back(*Name++);
561 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_BLOCKNAME, Record);
562}
563
564static void EmitRecordID(unsigned ID, const char *Name,
565 llvm::BitstreamWriter &Stream,
566 ASTWriter::RecordDataImpl &Record) {
567 Record.clear();
568 Record.push_back(ID);
569 while (*Name)
570 Record.push_back(*Name++);
571 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETRECORDNAME, Record);
572}
573
574static void AddStmtsExprs(llvm::BitstreamWriter &Stream,
575 ASTWriter::RecordDataImpl &Record) {
576#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
577 RECORD(STMT_STOP);
578 RECORD(STMT_NULL_PTR);
579 RECORD(STMT_REF_PTR);
580 RECORD(STMT_NULL);
581 RECORD(STMT_COMPOUND);
582 RECORD(STMT_CASE);
583 RECORD(STMT_DEFAULT);
584 RECORD(STMT_LABEL);
585 RECORD(STMT_ATTRIBUTED);
586 RECORD(STMT_IF);
587 RECORD(STMT_SWITCH);
588 RECORD(STMT_WHILE);
589 RECORD(STMT_DO);
590 RECORD(STMT_FOR);
591 RECORD(STMT_GOTO);
592 RECORD(STMT_INDIRECT_GOTO);
593 RECORD(STMT_CONTINUE);
594 RECORD(STMT_BREAK);
595 RECORD(STMT_RETURN);
596 RECORD(STMT_DECL);
597 RECORD(STMT_GCCASM);
598 RECORD(STMT_MSASM);
599 RECORD(EXPR_PREDEFINED);
600 RECORD(EXPR_DECL_REF);
601 RECORD(EXPR_INTEGER_LITERAL);
602 RECORD(EXPR_FIXEDPOINT_LITERAL);
603 RECORD(EXPR_FLOATING_LITERAL);
604 RECORD(EXPR_IMAGINARY_LITERAL);
605 RECORD(EXPR_STRING_LITERAL);
606 RECORD(EXPR_CHARACTER_LITERAL);
607 RECORD(EXPR_PAREN);
608 RECORD(EXPR_PAREN_LIST);
609 RECORD(EXPR_UNARY_OPERATOR);
610 RECORD(EXPR_SIZEOF_ALIGN_OF);
611 RECORD(EXPR_ARRAY_SUBSCRIPT);
612 RECORD(EXPR_CALL);
613 RECORD(EXPR_MEMBER);
614 RECORD(EXPR_BINARY_OPERATOR);
615 RECORD(EXPR_COMPOUND_ASSIGN_OPERATOR);
616 RECORD(EXPR_CONDITIONAL_OPERATOR);
617 RECORD(EXPR_IMPLICIT_CAST);
618 RECORD(EXPR_CSTYLE_CAST);
619 RECORD(EXPR_COMPOUND_LITERAL);
620 RECORD(EXPR_EXT_VECTOR_ELEMENT);
621 RECORD(EXPR_INIT_LIST);
622 RECORD(EXPR_DESIGNATED_INIT);
623 RECORD(EXPR_DESIGNATED_INIT_UPDATE);
624 RECORD(EXPR_IMPLICIT_VALUE_INIT);
625 RECORD(EXPR_NO_INIT);
626 RECORD(EXPR_VA_ARG);
627 RECORD(EXPR_ADDR_LABEL);
628 RECORD(EXPR_STMT);
629 RECORD(EXPR_CHOOSE);
630 RECORD(EXPR_GNU_NULL);
631 RECORD(EXPR_SHUFFLE_VECTOR);
632 RECORD(EXPR_BLOCK);
633 RECORD(EXPR_GENERIC_SELECTION);
634 RECORD(EXPR_OBJC_STRING_LITERAL);
635 RECORD(EXPR_OBJC_BOXED_EXPRESSION);
636 RECORD(EXPR_OBJC_ARRAY_LITERAL);
637 RECORD(EXPR_OBJC_DICTIONARY_LITERAL);
638 RECORD(EXPR_OBJC_ENCODE);
639 RECORD(EXPR_OBJC_SELECTOR_EXPR);
640 RECORD(EXPR_OBJC_PROTOCOL_EXPR);
641 RECORD(EXPR_OBJC_IVAR_REF_EXPR);
642 RECORD(EXPR_OBJC_PROPERTY_REF_EXPR);
643 RECORD(EXPR_OBJC_KVC_REF_EXPR);
644 RECORD(EXPR_OBJC_MESSAGE_EXPR);
645 RECORD(STMT_OBJC_FOR_COLLECTION);
646 RECORD(STMT_OBJC_CATCH);
647 RECORD(STMT_OBJC_FINALLY);
648 RECORD(STMT_OBJC_AT_TRY);
649 RECORD(STMT_OBJC_AT_SYNCHRONIZED);
650 RECORD(STMT_OBJC_AT_THROW);
651 RECORD(EXPR_OBJC_BOOL_LITERAL);
652 RECORD(STMT_CXX_CATCH);
653 RECORD(STMT_CXX_TRY);
654 RECORD(STMT_CXX_FOR_RANGE);
655 RECORD(EXPR_CXX_OPERATOR_CALL);
656 RECORD(EXPR_CXX_MEMBER_CALL);
657 RECORD(EXPR_CXX_REWRITTEN_BINARY_OPERATOR);
658 RECORD(EXPR_CXX_CONSTRUCT);
659 RECORD(EXPR_CXX_TEMPORARY_OBJECT);
660 RECORD(EXPR_CXX_STATIC_CAST);
661 RECORD(EXPR_CXX_DYNAMIC_CAST);
662 RECORD(EXPR_CXX_REINTERPRET_CAST);
663 RECORD(EXPR_CXX_CONST_CAST);
664 RECORD(EXPR_CXX_ADDRSPACE_CAST);
665 RECORD(EXPR_CXX_FUNCTIONAL_CAST);
666 RECORD(EXPR_USER_DEFINED_LITERAL);
667 RECORD(EXPR_CXX_STD_INITIALIZER_LIST);
668 RECORD(EXPR_CXX_BOOL_LITERAL);
669 RECORD(EXPR_CXX_NULL_PTR_LITERAL);
670 RECORD(EXPR_CXX_TYPEID_EXPR);
671 RECORD(EXPR_CXX_TYPEID_TYPE);
672 RECORD(EXPR_CXX_THIS);
673 RECORD(EXPR_CXX_THROW);
674 RECORD(EXPR_CXX_DEFAULT_ARG);
675 RECORD(EXPR_CXX_DEFAULT_INIT);
676 RECORD(EXPR_CXX_BIND_TEMPORARY);
677 RECORD(EXPR_CXX_SCALAR_VALUE_INIT);
678 RECORD(EXPR_CXX_NEW);
679 RECORD(EXPR_CXX_DELETE);
680 RECORD(EXPR_CXX_PSEUDO_DESTRUCTOR);
681 RECORD(EXPR_EXPR_WITH_CLEANUPS);
682 RECORD(EXPR_CXX_DEPENDENT_SCOPE_MEMBER);
683 RECORD(EXPR_CXX_DEPENDENT_SCOPE_DECL_REF);
684 RECORD(EXPR_CXX_UNRESOLVED_CONSTRUCT);
685 RECORD(EXPR_CXX_UNRESOLVED_MEMBER);
686 RECORD(EXPR_CXX_UNRESOLVED_LOOKUP);
687 RECORD(EXPR_CXX_EXPRESSION_TRAIT);
688 RECORD(EXPR_CXX_NOEXCEPT);
689 RECORD(EXPR_OPAQUE_VALUE);
690 RECORD(EXPR_BINARY_CONDITIONAL_OPERATOR);
691 RECORD(EXPR_TYPE_TRAIT);
692 RECORD(EXPR_ARRAY_TYPE_TRAIT);
693 RECORD(EXPR_PACK_EXPANSION);
694 RECORD(EXPR_SIZEOF_PACK);
695 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM);
696 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK);
697 RECORD(EXPR_FUNCTION_PARM_PACK);
698 RECORD(EXPR_MATERIALIZE_TEMPORARY);
699 RECORD(EXPR_CUDA_KERNEL_CALL);
700 RECORD(EXPR_CXX_UUIDOF_EXPR);
701 RECORD(EXPR_CXX_UUIDOF_TYPE);
702 RECORD(EXPR_LAMBDA);
703#undef RECORD
704}
705
706void ASTWriter::WriteBlockInfoBlock() {
707 RecordData Record;
708 Stream.EnterBlockInfoBlock();
709
710#define BLOCK(X) EmitBlockID(X ## _ID, #X, Stream, Record)
711#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
712
713 // Control Block.
714 BLOCK(CONTROL_BLOCK);
715 RECORD(METADATA);
716 RECORD(MODULE_NAME);
717 RECORD(MODULE_DIRECTORY);
718 RECORD(MODULE_MAP_FILE);
719 RECORD(IMPORTS);
720 RECORD(ORIGINAL_FILE);
721 RECORD(ORIGINAL_PCH_DIR);
722 RECORD(ORIGINAL_FILE_ID);
723 RECORD(INPUT_FILE_OFFSETS);
724
725 BLOCK(OPTIONS_BLOCK);
726 RECORD(LANGUAGE_OPTIONS);
727 RECORD(TARGET_OPTIONS);
728 RECORD(FILE_SYSTEM_OPTIONS);
729 RECORD(HEADER_SEARCH_OPTIONS);
730 RECORD(PREPROCESSOR_OPTIONS);
731
732 BLOCK(INPUT_FILES_BLOCK);
733 RECORD(INPUT_FILE);
734 RECORD(INPUT_FILE_HASH);
735
736 // AST Top-Level Block.
737 BLOCK(AST_BLOCK);
738 RECORD(TYPE_OFFSET);
739 RECORD(DECL_OFFSET);
740 RECORD(IDENTIFIER_OFFSET);
741 RECORD(IDENTIFIER_TABLE);
742 RECORD(EAGERLY_DESERIALIZED_DECLS);
743 RECORD(MODULAR_CODEGEN_DECLS);
744 RECORD(SPECIAL_TYPES);
745 RECORD(STATISTICS);
746 RECORD(TENTATIVE_DEFINITIONS);
747 RECORD(SELECTOR_OFFSETS);
748 RECORD(METHOD_POOL);
749 RECORD(PP_COUNTER_VALUE);
750 RECORD(SOURCE_LOCATION_OFFSETS);
751 RECORD(SOURCE_LOCATION_PRELOADS);
752 RECORD(EXT_VECTOR_DECLS);
753 RECORD(UNUSED_FILESCOPED_DECLS);
754 RECORD(PPD_ENTITIES_OFFSETS);
755 RECORD(VTABLE_USES);
756 RECORD(PPD_SKIPPED_RANGES);
757 RECORD(REFERENCED_SELECTOR_POOL);
758 RECORD(TU_UPDATE_LEXICAL);
759 RECORD(SEMA_DECL_REFS);
760 RECORD(WEAK_UNDECLARED_IDENTIFIERS);
761 RECORD(PENDING_IMPLICIT_INSTANTIATIONS);
762 RECORD(UPDATE_VISIBLE);
763 RECORD(DECL_UPDATE_OFFSETS);
764 RECORD(DECL_UPDATES);
765 RECORD(CUDA_SPECIAL_DECL_REFS);
766 RECORD(HEADER_SEARCH_TABLE);
767 RECORD(FP_PRAGMA_OPTIONS);
768 RECORD(OPENCL_EXTENSIONS);
769 RECORD(OPENCL_EXTENSION_TYPES);
770 RECORD(OPENCL_EXTENSION_DECLS);
771 RECORD(DELEGATING_CTORS);
772 RECORD(KNOWN_NAMESPACES);
773 RECORD(MODULE_OFFSET_MAP);
774 RECORD(SOURCE_MANAGER_LINE_TABLE);
775 RECORD(OBJC_CATEGORIES_MAP);
776 RECORD(FILE_SORTED_DECLS);
777 RECORD(IMPORTED_MODULES);
778 RECORD(OBJC_CATEGORIES);
779 RECORD(MACRO_OFFSET);
780 RECORD(INTERESTING_IDENTIFIERS);
781 RECORD(UNDEFINED_BUT_USED);
782 RECORD(LATE_PARSED_TEMPLATE);
783 RECORD(OPTIMIZE_PRAGMA_OPTIONS);
784 RECORD(MSSTRUCT_PRAGMA_OPTIONS);
785 RECORD(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS);
786 RECORD(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES);
787 RECORD(DELETE_EXPRS_TO_ANALYZE);
788 RECORD(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH);
789 RECORD(PP_CONDITIONAL_STACK);
790 RECORD(DECLS_TO_CHECK_FOR_DEFERRED_DIAGS);
791
792 // SourceManager Block.
793 BLOCK(SOURCE_MANAGER_BLOCK);
794 RECORD(SM_SLOC_FILE_ENTRY);
795 RECORD(SM_SLOC_BUFFER_ENTRY);
796 RECORD(SM_SLOC_BUFFER_BLOB);
797 RECORD(SM_SLOC_BUFFER_BLOB_COMPRESSED);
798 RECORD(SM_SLOC_EXPANSION_ENTRY);
799
800 // Preprocessor Block.
801 BLOCK(PREPROCESSOR_BLOCK);
802 RECORD(PP_MACRO_DIRECTIVE_HISTORY);
803 RECORD(PP_MACRO_FUNCTION_LIKE);
804 RECORD(PP_MACRO_OBJECT_LIKE);
805 RECORD(PP_MODULE_MACRO);
806 RECORD(PP_TOKEN);
807
808 // Submodule Block.
809 BLOCK(SUBMODULE_BLOCK);
810 RECORD(SUBMODULE_METADATA);
811 RECORD(SUBMODULE_DEFINITION);
812 RECORD(SUBMODULE_UMBRELLA_HEADER);
813 RECORD(SUBMODULE_HEADER);
814 RECORD(SUBMODULE_TOPHEADER);
815 RECORD(SUBMODULE_UMBRELLA_DIR);
816 RECORD(SUBMODULE_IMPORTS);
817 RECORD(SUBMODULE_EXPORTS);
818 RECORD(SUBMODULE_REQUIRES);
819 RECORD(SUBMODULE_EXCLUDED_HEADER);
820 RECORD(SUBMODULE_LINK_LIBRARY);
821 RECORD(SUBMODULE_CONFIG_MACRO);
822 RECORD(SUBMODULE_CONFLICT);
823 RECORD(SUBMODULE_PRIVATE_HEADER);
824 RECORD(SUBMODULE_TEXTUAL_HEADER);
825 RECORD(SUBMODULE_PRIVATE_TEXTUAL_HEADER);
826 RECORD(SUBMODULE_INITIALIZERS);
827 RECORD(SUBMODULE_EXPORT_AS);
828
829 // Comments Block.
830 BLOCK(COMMENTS_BLOCK);
831 RECORD(COMMENTS_RAW_COMMENT);
832
833 // Decls and Types block.
834 BLOCK(DECLTYPES_BLOCK);
835 RECORD(TYPE_EXT_QUAL);
836 RECORD(TYPE_COMPLEX);
837 RECORD(TYPE_POINTER);
838 RECORD(TYPE_BLOCK_POINTER);
839 RECORD(TYPE_LVALUE_REFERENCE);
840 RECORD(TYPE_RVALUE_REFERENCE);
841 RECORD(TYPE_MEMBER_POINTER);
842 RECORD(TYPE_CONSTANT_ARRAY);
843 RECORD(TYPE_INCOMPLETE_ARRAY);
844 RECORD(TYPE_VARIABLE_ARRAY);
845 RECORD(TYPE_VECTOR);
846 RECORD(TYPE_EXT_VECTOR);
847 RECORD(TYPE_FUNCTION_NO_PROTO);
848 RECORD(TYPE_FUNCTION_PROTO);
849 RECORD(TYPE_TYPEDEF);
850 RECORD(TYPE_TYPEOF_EXPR);
851 RECORD(TYPE_TYPEOF);
852 RECORD(TYPE_RECORD);
853 RECORD(TYPE_ENUM);
854 RECORD(TYPE_OBJC_INTERFACE);
855 RECORD(TYPE_OBJC_OBJECT_POINTER);
856 RECORD(TYPE_DECLTYPE);
857 RECORD(TYPE_ELABORATED);
858 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM);
859 RECORD(TYPE_UNRESOLVED_USING);
860 RECORD(TYPE_INJECTED_CLASS_NAME);
861 RECORD(TYPE_OBJC_OBJECT);
862 RECORD(TYPE_TEMPLATE_TYPE_PARM);
863 RECORD(TYPE_TEMPLATE_SPECIALIZATION);
864 RECORD(TYPE_DEPENDENT_NAME);
865 RECORD(TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION);
866 RECORD(TYPE_DEPENDENT_SIZED_ARRAY);
867 RECORD(TYPE_PAREN);
868 RECORD(TYPE_MACRO_QUALIFIED);
869 RECORD(TYPE_PACK_EXPANSION);
870 RECORD(TYPE_ATTRIBUTED);
871 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK);
872 RECORD(TYPE_AUTO);
873 RECORD(TYPE_UNARY_TRANSFORM);
874 RECORD(TYPE_ATOMIC);
875 RECORD(TYPE_DECAYED);
876 RECORD(TYPE_ADJUSTED);
877 RECORD(TYPE_OBJC_TYPE_PARAM);
878 RECORD(LOCAL_REDECLARATIONS);
879 RECORD(DECL_TYPEDEF);
880 RECORD(DECL_TYPEALIAS);
881 RECORD(DECL_ENUM);
882 RECORD(DECL_RECORD);
883 RECORD(DECL_ENUM_CONSTANT);
884 RECORD(DECL_FUNCTION);
885 RECORD(DECL_OBJC_METHOD);
886 RECORD(DECL_OBJC_INTERFACE);
887 RECORD(DECL_OBJC_PROTOCOL);
888 RECORD(DECL_OBJC_IVAR);
889 RECORD(DECL_OBJC_AT_DEFS_FIELD);
890 RECORD(DECL_OBJC_CATEGORY);
891 RECORD(DECL_OBJC_CATEGORY_IMPL);
892 RECORD(DECL_OBJC_IMPLEMENTATION);
893 RECORD(DECL_OBJC_COMPATIBLE_ALIAS);
894 RECORD(DECL_OBJC_PROPERTY);
895 RECORD(DECL_OBJC_PROPERTY_IMPL);
896 RECORD(DECL_FIELD);
897 RECORD(DECL_MS_PROPERTY);
898 RECORD(DECL_VAR);
899 RECORD(DECL_IMPLICIT_PARAM);
900 RECORD(DECL_PARM_VAR);
901 RECORD(DECL_FILE_SCOPE_ASM);
902 RECORD(DECL_BLOCK);
903 RECORD(DECL_CONTEXT_LEXICAL);
904 RECORD(DECL_CONTEXT_VISIBLE);
905 RECORD(DECL_NAMESPACE);
906 RECORD(DECL_NAMESPACE_ALIAS);
907 RECORD(DECL_USING);
908 RECORD(DECL_USING_SHADOW);
909 RECORD(DECL_USING_DIRECTIVE);
910 RECORD(DECL_UNRESOLVED_USING_VALUE);
911 RECORD(DECL_UNRESOLVED_USING_TYPENAME);
912 RECORD(DECL_LINKAGE_SPEC);
913 RECORD(DECL_CXX_RECORD);
914 RECORD(DECL_CXX_METHOD);
915 RECORD(DECL_CXX_CONSTRUCTOR);
916 RECORD(DECL_CXX_DESTRUCTOR);
917 RECORD(DECL_CXX_CONVERSION);
918 RECORD(DECL_ACCESS_SPEC);
919 RECORD(DECL_FRIEND);
920 RECORD(DECL_FRIEND_TEMPLATE);
921 RECORD(DECL_CLASS_TEMPLATE);
922 RECORD(DECL_CLASS_TEMPLATE_SPECIALIZATION);
923 RECORD(DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION);
924 RECORD(DECL_VAR_TEMPLATE);
925 RECORD(DECL_VAR_TEMPLATE_SPECIALIZATION);
926 RECORD(DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION);
927 RECORD(DECL_FUNCTION_TEMPLATE);
928 RECORD(DECL_TEMPLATE_TYPE_PARM);
929 RECORD(DECL_NON_TYPE_TEMPLATE_PARM);
930 RECORD(DECL_TEMPLATE_TEMPLATE_PARM);
931 RECORD(DECL_CONCEPT);
932 RECORD(DECL_REQUIRES_EXPR_BODY);
933 RECORD(DECL_TYPE_ALIAS_TEMPLATE);
934 RECORD(DECL_STATIC_ASSERT);
935 RECORD(DECL_CXX_BASE_SPECIFIERS);
936 RECORD(DECL_CXX_CTOR_INITIALIZERS);
937 RECORD(DECL_INDIRECTFIELD);
938 RECORD(DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK);
939 RECORD(DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK);
940 RECORD(DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION);
941 RECORD(DECL_IMPORT);
942 RECORD(DECL_OMP_THREADPRIVATE);
943 RECORD(DECL_EMPTY);
944 RECORD(DECL_OBJC_TYPE_PARAM);
945 RECORD(DECL_OMP_CAPTUREDEXPR);
946 RECORD(DECL_PRAGMA_COMMENT);
947 RECORD(DECL_PRAGMA_DETECT_MISMATCH);
948 RECORD(DECL_OMP_DECLARE_REDUCTION);
949 RECORD(DECL_OMP_ALLOCATE);
950
951 // Statements and Exprs can occur in the Decls and Types block.
952 AddStmtsExprs(Stream, Record);
953
954 BLOCK(PREPROCESSOR_DETAIL_BLOCK);
955 RECORD(PPD_MACRO_EXPANSION);
956 RECORD(PPD_MACRO_DEFINITION);
957 RECORD(PPD_INCLUSION_DIRECTIVE);
958
959 // Decls and Types block.
960 BLOCK(EXTENSION_BLOCK);
961 RECORD(EXTENSION_METADATA);
962
963 BLOCK(UNHASHED_CONTROL_BLOCK);
964 RECORD(SIGNATURE);
965 RECORD(AST_BLOCK_HASH);
966 RECORD(DIAGNOSTIC_OPTIONS);
967 RECORD(DIAG_PRAGMA_MAPPINGS);
968
969#undef RECORD
970#undef BLOCK
971 Stream.ExitBlock();
972}
973
974/// Prepares a path for being written to an AST file by converting it
975/// to an absolute path and removing nested './'s.
976///
977/// \return \c true if the path was changed.
978static bool cleanPathForOutput(FileManager &FileMgr,
979 SmallVectorImpl<char> &Path) {
980 bool Changed = FileMgr.makeAbsolutePath(Path);
981 return Changed | llvm::sys::path::remove_dots(Path);
982}
983
984/// Adjusts the given filename to only write out the portion of the
985/// filename that is not part of the system root directory.
986///
987/// \param Filename the file name to adjust.
988///
989/// \param BaseDir When non-NULL, the PCH file is a relocatable AST file and
990/// the returned filename will be adjusted by this root directory.
991///
992/// \returns either the original filename (if it needs no adjustment) or the
993/// adjusted filename (which points into the @p Filename parameter).
994static const char *
995adjustFilenameForRelocatableAST(const char *Filename, StringRef BaseDir) {
996 assert(Filename && "No file name to adjust?")((Filename && "No file name to adjust?") ? static_cast
<void> (0) : __assert_fail ("Filename && \"No file name to adjust?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 996, __PRETTY_FUNCTION__))
;
997
998 if (BaseDir.empty())
999 return Filename;
1000
1001 // Verify that the filename and the system root have the same prefix.
1002 unsigned Pos = 0;
1003 for (; Filename[Pos] && Pos < BaseDir.size(); ++Pos)
1004 if (Filename[Pos] != BaseDir[Pos])
1005 return Filename; // Prefixes don't match.
1006
1007 // We hit the end of the filename before we hit the end of the system root.
1008 if (!Filename[Pos])
1009 return Filename;
1010
1011 // If there's not a path separator at the end of the base directory nor
1012 // immediately after it, then this isn't within the base directory.
1013 if (!llvm::sys::path::is_separator(Filename[Pos])) {
1014 if (!llvm::sys::path::is_separator(BaseDir.back()))
1015 return Filename;
1016 } else {
1017 // If the file name has a '/' at the current position, skip over the '/'.
1018 // We distinguish relative paths from absolute paths by the
1019 // absence of '/' at the beginning of relative paths.
1020 //
1021 // FIXME: This is wrong. We distinguish them by asking if the path is
1022 // absolute, which isn't the same thing. And there might be multiple '/'s
1023 // in a row. Use a better mechanism to indicate whether we have emitted an
1024 // absolute or relative path.
1025 ++Pos;
1026 }
1027
1028 return Filename + Pos;
1029}
1030
1031std::pair<ASTFileSignature, ASTFileSignature>
1032ASTWriter::createSignature(StringRef AllBytes, StringRef ASTBlockBytes) {
1033 llvm::SHA1 Hasher;
1034 Hasher.update(ASTBlockBytes);
1035 auto Hash = Hasher.result();
1036 ASTFileSignature ASTBlockHash = ASTFileSignature::create(Hash);
1037
1038 // Add the remaining bytes (i.e. bytes before the unhashed control block that
1039 // are not part of the AST block).
1040 Hasher.update(
1041 AllBytes.take_front(ASTBlockBytes.bytes_end() - AllBytes.bytes_begin()));
1042 Hasher.update(
1043 AllBytes.take_back(AllBytes.bytes_end() - ASTBlockBytes.bytes_end()));
1044 Hash = Hasher.result();
1045 ASTFileSignature Signature = ASTFileSignature::create(Hash);
1046
1047 return std::make_pair(ASTBlockHash, Signature);
1048}
1049
1050ASTFileSignature ASTWriter::writeUnhashedControlBlock(Preprocessor &PP,
1051 ASTContext &Context) {
1052 // Flush first to prepare the PCM hash (signature).
1053 Stream.FlushToWord();
1054 auto StartOfUnhashedControl = Stream.GetCurrentBitNo() >> 3;
1055
1056 // Enter the block and prepare to write records.
1057 RecordData Record;
1058 Stream.EnterSubblock(UNHASHED_CONTROL_BLOCK_ID, 5);
1059
1060 // For implicit modules, write the hash of the PCM as its signature.
1061 ASTFileSignature Signature;
1062 if (WritingModule &&
1063 PP.getHeaderSearchInfo().getHeaderSearchOpts().ModulesHashContent) {
1064 ASTFileSignature ASTBlockHash;
1065 auto ASTBlockStartByte = ASTBlockRange.first >> 3;
1066 auto ASTBlockByteLength = (ASTBlockRange.second >> 3) - ASTBlockStartByte;
1067 std::tie(ASTBlockHash, Signature) = createSignature(
1068 StringRef(Buffer.begin(), StartOfUnhashedControl),
1069 StringRef(Buffer.begin() + ASTBlockStartByte, ASTBlockByteLength));
1070
1071 Record.append(ASTBlockHash.begin(), ASTBlockHash.end());
1072 Stream.EmitRecord(AST_BLOCK_HASH, Record);
1073 Record.clear();
1074 Record.append(Signature.begin(), Signature.end());
1075 Stream.EmitRecord(SIGNATURE, Record);
1076 Record.clear();
1077 }
1078
1079 // Diagnostic options.
1080 const auto &Diags = Context.getDiagnostics();
1081 const DiagnosticOptions &DiagOpts = Diags.getDiagnosticOptions();
1082#define DIAGOPT(Name, Bits, Default) Record.push_back(DiagOpts.Name);
1083#define ENUM_DIAGOPT(Name, Type, Bits, Default) \
1084 Record.push_back(static_cast<unsigned>(DiagOpts.get##Name()));
1085#include "clang/Basic/DiagnosticOptions.def"
1086 Record.push_back(DiagOpts.Warnings.size());
1087 for (unsigned I = 0, N = DiagOpts.Warnings.size(); I != N; ++I)
1088 AddString(DiagOpts.Warnings[I], Record);
1089 Record.push_back(DiagOpts.Remarks.size());
1090 for (unsigned I = 0, N = DiagOpts.Remarks.size(); I != N; ++I)
1091 AddString(DiagOpts.Remarks[I], Record);
1092 // Note: we don't serialize the log or serialization file names, because they
1093 // are generally transient files and will almost always be overridden.
1094 Stream.EmitRecord(DIAGNOSTIC_OPTIONS, Record);
1095
1096 // Write out the diagnostic/pragma mappings.
1097 WritePragmaDiagnosticMappings(Diags, /* isModule = */ WritingModule);
1098
1099 // Leave the options block.
1100 Stream.ExitBlock();
1101 return Signature;
1102}
1103
1104/// Write the control block.
1105void ASTWriter::WriteControlBlock(Preprocessor &PP, ASTContext &Context,
1106 StringRef isysroot,
1107 const std::string &OutputFile) {
1108 using namespace llvm;
1109
1110 Stream.EnterSubblock(CONTROL_BLOCK_ID, 5);
1111 RecordData Record;
1112
1113 // Metadata
1114 auto MetadataAbbrev = std::make_shared<BitCodeAbbrev>();
1115 MetadataAbbrev->Add(BitCodeAbbrevOp(METADATA));
1116 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Major
1117 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Minor
1118 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang maj.
1119 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang min.
1120 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Relocatable
1121 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Timestamps
1122 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Errors
1123 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // SVN branch/tag
1124 unsigned MetadataAbbrevCode = Stream.EmitAbbrev(std::move(MetadataAbbrev));
1125 assert((!WritingModule || isysroot.empty()) &&(((!WritingModule || isysroot.empty()) && "writing module as a relocatable PCH?"
) ? static_cast<void> (0) : __assert_fail ("(!WritingModule || isysroot.empty()) && \"writing module as a relocatable PCH?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 1126, __PRETTY_FUNCTION__))
1126 "writing module as a relocatable PCH?")(((!WritingModule || isysroot.empty()) && "writing module as a relocatable PCH?"
) ? static_cast<void> (0) : __assert_fail ("(!WritingModule || isysroot.empty()) && \"writing module as a relocatable PCH?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 1126, __PRETTY_FUNCTION__))
;
1127 {
1128 RecordData::value_type Record[] = {
1129 METADATA,
1130 VERSION_MAJOR,
1131 VERSION_MINOR,
1132 CLANG_VERSION_MAJOR12,
1133 CLANG_VERSION_MINOR0,
1134 !isysroot.empty(),
1135 IncludeTimestamps,
1136 ASTHasCompilerErrors};
1137 Stream.EmitRecordWithBlob(MetadataAbbrevCode, Record,
1138 getClangFullRepositoryVersion());
1139 }
1140
1141 if (WritingModule) {
1142 // Module name
1143 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1144 Abbrev->Add(BitCodeAbbrevOp(MODULE_NAME));
1145 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
1146 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1147 RecordData::value_type Record[] = {MODULE_NAME};
1148 Stream.EmitRecordWithBlob(AbbrevCode, Record, WritingModule->Name);
1149 }
1150
1151 if (WritingModule && WritingModule->Directory) {
1152 SmallString<128> BaseDir(WritingModule->Directory->getName());
1153 cleanPathForOutput(Context.getSourceManager().getFileManager(), BaseDir);
1154
1155 // If the home of the module is the current working directory, then we
1156 // want to pick up the cwd of the build process loading the module, not
1157 // our cwd, when we load this module.
1158 if (!PP.getHeaderSearchInfo()
1159 .getHeaderSearchOpts()
1160 .ModuleMapFileHomeIsCwd ||
1161 WritingModule->Directory->getName() != StringRef(".")) {
1162 // Module directory.
1163 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1164 Abbrev->Add(BitCodeAbbrevOp(MODULE_DIRECTORY));
1165 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Directory
1166 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1167
1168 RecordData::value_type Record[] = {MODULE_DIRECTORY};
1169 Stream.EmitRecordWithBlob(AbbrevCode, Record, BaseDir);
1170 }
1171
1172 // Write out all other paths relative to the base directory if possible.
1173 BaseDirectory.assign(BaseDir.begin(), BaseDir.end());
1174 } else if (!isysroot.empty()) {
1175 // Write out paths relative to the sysroot if possible.
1176 BaseDirectory = std::string(isysroot);
1177 }
1178
1179 // Module map file
1180 if (WritingModule && WritingModule->Kind == Module::ModuleMapModule) {
1181 Record.clear();
1182
1183 auto &Map = PP.getHeaderSearchInfo().getModuleMap();
1184 AddPath(WritingModule->PresumedModuleMapFile.empty()
1185 ? Map.getModuleMapFileForUniquing(WritingModule)->getName()
1186 : StringRef(WritingModule->PresumedModuleMapFile),
1187 Record);
1188
1189 // Additional module map files.
1190 if (auto *AdditionalModMaps =
1191 Map.getAdditionalModuleMapFiles(WritingModule)) {
1192 Record.push_back(AdditionalModMaps->size());
1193 for (const FileEntry *F : *AdditionalModMaps)
1194 AddPath(F->getName(), Record);
1195 } else {
1196 Record.push_back(0);
1197 }
1198
1199 Stream.EmitRecord(MODULE_MAP_FILE, Record);
1200 }
1201
1202 // Imports
1203 if (Chain) {
1204 serialization::ModuleManager &Mgr = Chain->getModuleManager();
1205 Record.clear();
1206
1207 for (ModuleFile &M : Mgr) {
1208 // Skip modules that weren't directly imported.
1209 if (!M.isDirectlyImported())
1210 continue;
1211
1212 Record.push_back((unsigned)M.Kind); // FIXME: Stable encoding
1213 AddSourceLocation(M.ImportLoc, Record);
1214
1215 // If we have calculated signature, there is no need to store
1216 // the size or timestamp.
1217 Record.push_back(M.Signature ? 0 : M.File->getSize());
1218 Record.push_back(M.Signature ? 0 : getTimestampForOutput(M.File));
1219
1220 for (auto I : M.Signature)
1221 Record.push_back(I);
1222
1223 AddString(M.ModuleName, Record);
1224 AddPath(M.FileName, Record);
1225 }
1226 Stream.EmitRecord(IMPORTS, Record);
1227 }
1228
1229 // Write the options block.
1230 Stream.EnterSubblock(OPTIONS_BLOCK_ID, 4);
1231
1232 // Language options.
1233 Record.clear();
1234 const LangOptions &LangOpts = Context.getLangOpts();
1235#define LANGOPT(Name, Bits, Default, Description) \
1236 Record.push_back(LangOpts.Name);
1237#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1238 Record.push_back(static_cast<unsigned>(LangOpts.get##Name()));
1239#include "clang/Basic/LangOptions.def"
1240#define SANITIZER(NAME, ID) \
1241 Record.push_back(LangOpts.Sanitize.has(SanitizerKind::ID));
1242#include "clang/Basic/Sanitizers.def"
1243
1244 Record.push_back(LangOpts.ModuleFeatures.size());
1245 for (StringRef Feature : LangOpts.ModuleFeatures)
1246 AddString(Feature, Record);
1247
1248 Record.push_back((unsigned) LangOpts.ObjCRuntime.getKind());
1249 AddVersionTuple(LangOpts.ObjCRuntime.getVersion(), Record);
1250
1251 AddString(LangOpts.CurrentModule, Record);
1252
1253 // Comment options.
1254 Record.push_back(LangOpts.CommentOpts.BlockCommandNames.size());
1255 for (const auto &I : LangOpts.CommentOpts.BlockCommandNames) {
1256 AddString(I, Record);
1257 }
1258 Record.push_back(LangOpts.CommentOpts.ParseAllComments);
1259
1260 // OpenMP offloading options.
1261 Record.push_back(LangOpts.OMPTargetTriples.size());
1262 for (auto &T : LangOpts.OMPTargetTriples)
1263 AddString(T.getTriple(), Record);
1264
1265 AddString(LangOpts.OMPHostIRFile, Record);
1266
1267 Stream.EmitRecord(LANGUAGE_OPTIONS, Record);
1268
1269 // Target options.
1270 Record.clear();
1271 const TargetInfo &Target = Context.getTargetInfo();
1272 const TargetOptions &TargetOpts = Target.getTargetOpts();
1273 AddString(TargetOpts.Triple, Record);
1274 AddString(TargetOpts.CPU, Record);
1275 AddString(TargetOpts.TuneCPU, Record);
1276 AddString(TargetOpts.ABI, Record);
1277 Record.push_back(TargetOpts.FeaturesAsWritten.size());
1278 for (unsigned I = 0, N = TargetOpts.FeaturesAsWritten.size(); I != N; ++I) {
1279 AddString(TargetOpts.FeaturesAsWritten[I], Record);
1280 }
1281 Record.push_back(TargetOpts.Features.size());
1282 for (unsigned I = 0, N = TargetOpts.Features.size(); I != N; ++I) {
1283 AddString(TargetOpts.Features[I], Record);
1284 }
1285 Stream.EmitRecord(TARGET_OPTIONS, Record);
1286
1287 // File system options.
1288 Record.clear();
1289 const FileSystemOptions &FSOpts =
1290 Context.getSourceManager().getFileManager().getFileSystemOpts();
1291 AddString(FSOpts.WorkingDir, Record);
1292 Stream.EmitRecord(FILE_SYSTEM_OPTIONS, Record);
1293
1294 // Header search options.
1295 Record.clear();
1296 const HeaderSearchOptions &HSOpts
1297 = PP.getHeaderSearchInfo().getHeaderSearchOpts();
1298 AddString(HSOpts.Sysroot, Record);
1299
1300 // Include entries.
1301 Record.push_back(HSOpts.UserEntries.size());
1302 for (unsigned I = 0, N = HSOpts.UserEntries.size(); I != N; ++I) {
1303 const HeaderSearchOptions::Entry &Entry = HSOpts.UserEntries[I];
1304 AddString(Entry.Path, Record);
1305 Record.push_back(static_cast<unsigned>(Entry.Group));
1306 Record.push_back(Entry.IsFramework);
1307 Record.push_back(Entry.IgnoreSysRoot);
1308 }
1309
1310 // System header prefixes.
1311 Record.push_back(HSOpts.SystemHeaderPrefixes.size());
1312 for (unsigned I = 0, N = HSOpts.SystemHeaderPrefixes.size(); I != N; ++I) {
1313 AddString(HSOpts.SystemHeaderPrefixes[I].Prefix, Record);
1314 Record.push_back(HSOpts.SystemHeaderPrefixes[I].IsSystemHeader);
1315 }
1316
1317 AddString(HSOpts.ResourceDir, Record);
1318 AddString(HSOpts.ModuleCachePath, Record);
1319 AddString(HSOpts.ModuleUserBuildPath, Record);
1320 Record.push_back(HSOpts.DisableModuleHash);
1321 Record.push_back(HSOpts.ImplicitModuleMaps);
1322 Record.push_back(HSOpts.ModuleMapFileHomeIsCwd);
1323 Record.push_back(HSOpts.UseBuiltinIncludes);
1324 Record.push_back(HSOpts.UseStandardSystemIncludes);
1325 Record.push_back(HSOpts.UseStandardCXXIncludes);
1326 Record.push_back(HSOpts.UseLibcxx);
1327 // Write out the specific module cache path that contains the module files.
1328 AddString(PP.getHeaderSearchInfo().getModuleCachePath(), Record);
1329 Stream.EmitRecord(HEADER_SEARCH_OPTIONS, Record);
1330
1331 // Preprocessor options.
1332 Record.clear();
1333 const PreprocessorOptions &PPOpts = PP.getPreprocessorOpts();
1334
1335 // Macro definitions.
1336 Record.push_back(PPOpts.Macros.size());
1337 for (unsigned I = 0, N = PPOpts.Macros.size(); I != N; ++I) {
1338 AddString(PPOpts.Macros[I].first, Record);
1339 Record.push_back(PPOpts.Macros[I].second);
1340 }
1341
1342 // Includes
1343 Record.push_back(PPOpts.Includes.size());
1344 for (unsigned I = 0, N = PPOpts.Includes.size(); I != N; ++I)
1345 AddString(PPOpts.Includes[I], Record);
1346
1347 // Macro includes
1348 Record.push_back(PPOpts.MacroIncludes.size());
1349 for (unsigned I = 0, N = PPOpts.MacroIncludes.size(); I != N; ++I)
1350 AddString(PPOpts.MacroIncludes[I], Record);
1351
1352 Record.push_back(PPOpts.UsePredefines);
1353 // Detailed record is important since it is used for the module cache hash.
1354 Record.push_back(PPOpts.DetailedRecord);
1355 AddString(PPOpts.ImplicitPCHInclude, Record);
1356 Record.push_back(static_cast<unsigned>(PPOpts.ObjCXXARCStandardLibrary));
1357 Stream.EmitRecord(PREPROCESSOR_OPTIONS, Record);
1358
1359 // Leave the options block.
1360 Stream.ExitBlock();
1361
1362 // Original file name and file ID
1363 SourceManager &SM = Context.getSourceManager();
1364 if (const FileEntry *MainFile = SM.getFileEntryForID(SM.getMainFileID())) {
1365 auto FileAbbrev = std::make_shared<BitCodeAbbrev>();
1366 FileAbbrev->Add(BitCodeAbbrevOp(ORIGINAL_FILE));
1367 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // File ID
1368 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1369 unsigned FileAbbrevCode = Stream.EmitAbbrev(std::move(FileAbbrev));
1370
1371 Record.clear();
1372 Record.push_back(ORIGINAL_FILE);
1373 Record.push_back(SM.getMainFileID().getOpaqueValue());
1374 EmitRecordWithPath(FileAbbrevCode, Record, MainFile->getName());
1375 }
1376
1377 Record.clear();
1378 Record.push_back(SM.getMainFileID().getOpaqueValue());
1379 Stream.EmitRecord(ORIGINAL_FILE_ID, Record);
1380
1381 // Original PCH directory
1382 if (!OutputFile.empty() && OutputFile != "-") {
1383 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1384 Abbrev->Add(BitCodeAbbrevOp(ORIGINAL_PCH_DIR));
1385 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1386 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1387
1388 SmallString<128> OutputPath(OutputFile);
1389
1390 SM.getFileManager().makeAbsolutePath(OutputPath);
1391 StringRef origDir = llvm::sys::path::parent_path(OutputPath);
1392
1393 RecordData::value_type Record[] = {ORIGINAL_PCH_DIR};
1394 Stream.EmitRecordWithBlob(AbbrevCode, Record, origDir);
1395 }
1396
1397 WriteInputFiles(Context.SourceMgr,
1398 PP.getHeaderSearchInfo().getHeaderSearchOpts(),
1399 PP.getLangOpts().Modules);
1400 Stream.ExitBlock();
1401}
1402
1403namespace {
1404
1405/// An input file.
1406struct InputFileEntry {
1407 const FileEntry *File;
1408 bool IsSystemFile;
1409 bool IsTransient;
1410 bool BufferOverridden;
1411 bool IsTopLevelModuleMap;
1412 uint32_t ContentHash[2];
1413};
1414
1415} // namespace
1416
1417void ASTWriter::WriteInputFiles(SourceManager &SourceMgr,
1418 HeaderSearchOptions &HSOpts,
1419 bool Modules) {
1420 using namespace llvm;
1421
1422 Stream.EnterSubblock(INPUT_FILES_BLOCK_ID, 4);
1423
1424 // Create input-file abbreviation.
1425 auto IFAbbrev = std::make_shared<BitCodeAbbrev>();
1426 IFAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE));
1427 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
1428 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 12)); // Size
1429 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // Modification time
1430 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Overridden
1431 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Transient
1432 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Module map
1433 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1434 unsigned IFAbbrevCode = Stream.EmitAbbrev(std::move(IFAbbrev));
1435
1436 // Create input file hash abbreviation.
1437 auto IFHAbbrev = std::make_shared<BitCodeAbbrev>();
1438 IFHAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE_HASH));
1439 IFHAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1440 IFHAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1441 unsigned IFHAbbrevCode = Stream.EmitAbbrev(std::move(IFHAbbrev));
1442
1443 // Get all ContentCache objects for files, sorted by whether the file is a
1444 // system one or not. System files go at the back, users files at the front.
1445 std::deque<InputFileEntry> SortedFiles;
1446 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size(); I != N; ++I) {
1447 // Get this source location entry.
1448 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
1449 assert(&SourceMgr.getSLocEntry(FileID::get(I)) == SLoc)((&SourceMgr.getSLocEntry(FileID::get(I)) == SLoc) ? static_cast
<void> (0) : __assert_fail ("&SourceMgr.getSLocEntry(FileID::get(I)) == SLoc"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 1449, __PRETTY_FUNCTION__))
;
1450
1451 // We only care about file entries that were not overridden.
1452 if (!SLoc->isFile())
1453 continue;
1454 const SrcMgr::FileInfo &File = SLoc->getFile();
1455 const SrcMgr::ContentCache *Cache = File.getContentCache();
1456 if (!Cache->OrigEntry)
1457 continue;
1458
1459 InputFileEntry Entry;
1460 Entry.File = Cache->OrigEntry;
1461 Entry.IsSystemFile = isSystem(File.getFileCharacteristic());
1462 Entry.IsTransient = Cache->IsTransient;
1463 Entry.BufferOverridden = Cache->BufferOverridden;
1464 Entry.IsTopLevelModuleMap = isModuleMap(File.getFileCharacteristic()) &&
1465 File.getIncludeLoc().isInvalid();
1466
1467 auto ContentHash = hash_code(-1);
1468 if (PP->getHeaderSearchInfo()
1469 .getHeaderSearchOpts()
1470 .ValidateASTInputFilesContent) {
1471 auto *MemBuff = Cache->getRawBuffer();
1472 if (MemBuff)
1473 ContentHash = hash_value(MemBuff->getBuffer());
1474 else
1475 // FIXME: The path should be taken from the FileEntryRef.
1476 PP->Diag(SourceLocation(), diag::err_module_unable_to_hash_content)
1477 << Entry.File->getName();
1478 }
1479 auto CH = llvm::APInt(64, ContentHash);
1480 Entry.ContentHash[0] =
1481 static_cast<uint32_t>(CH.getLoBits(32).getZExtValue());
1482 Entry.ContentHash[1] =
1483 static_cast<uint32_t>(CH.getHiBits(32).getZExtValue());
1484
1485 if (Entry.IsSystemFile)
1486 SortedFiles.push_back(Entry);
1487 else
1488 SortedFiles.push_front(Entry);
1489 }
1490
1491 unsigned UserFilesNum = 0;
1492 // Write out all of the input files.
1493 std::vector<uint64_t> InputFileOffsets;
1494 for (const auto &Entry : SortedFiles) {
1495 uint32_t &InputFileID = InputFileIDs[Entry.File];
1496 if (InputFileID != 0)
1497 continue; // already recorded this file.
1498
1499 // Record this entry's offset.
1500 InputFileOffsets.push_back(Stream.GetCurrentBitNo());
1501
1502 InputFileID = InputFileOffsets.size();
1503
1504 if (!Entry.IsSystemFile)
1505 ++UserFilesNum;
1506
1507 // Emit size/modification time for this file.
1508 // And whether this file was overridden.
1509 {
1510 RecordData::value_type Record[] = {
1511 INPUT_FILE,
1512 InputFileOffsets.size(),
1513 (uint64_t)Entry.File->getSize(),
1514 (uint64_t)getTimestampForOutput(Entry.File),
1515 Entry.BufferOverridden,
1516 Entry.IsTransient,
1517 Entry.IsTopLevelModuleMap};
1518
1519 // FIXME: The path should be taken from the FileEntryRef.
1520 EmitRecordWithPath(IFAbbrevCode, Record, Entry.File->getName());
1521 }
1522
1523 // Emit content hash for this file.
1524 {
1525 RecordData::value_type Record[] = {INPUT_FILE_HASH, Entry.ContentHash[0],
1526 Entry.ContentHash[1]};
1527 Stream.EmitRecordWithAbbrev(IFHAbbrevCode, Record);
1528 }
1529 }
1530
1531 Stream.ExitBlock();
1532
1533 // Create input file offsets abbreviation.
1534 auto OffsetsAbbrev = std::make_shared<BitCodeAbbrev>();
1535 OffsetsAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE_OFFSETS));
1536 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # input files
1537 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # non-system
1538 // input files
1539 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Array
1540 unsigned OffsetsAbbrevCode = Stream.EmitAbbrev(std::move(OffsetsAbbrev));
1541
1542 // Write input file offsets.
1543 RecordData::value_type Record[] = {INPUT_FILE_OFFSETS,
1544 InputFileOffsets.size(), UserFilesNum};
1545 Stream.EmitRecordWithBlob(OffsetsAbbrevCode, Record, bytes(InputFileOffsets));
1546}
1547
1548//===----------------------------------------------------------------------===//
1549// Source Manager Serialization
1550//===----------------------------------------------------------------------===//
1551
1552/// Create an abbreviation for the SLocEntry that refers to a
1553/// file.
1554static unsigned CreateSLocFileAbbrev(llvm::BitstreamWriter &Stream) {
1555 using namespace llvm;
1556
1557 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1558 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_FILE_ENTRY));
1559 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1560 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1561 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1562 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1563 // FileEntry fields.
1564 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Input File ID
1565 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumCreatedFIDs
1566 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 24)); // FirstDeclIndex
1567 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumDecls
1568 return Stream.EmitAbbrev(std::move(Abbrev));
1569}
1570
1571/// Create an abbreviation for the SLocEntry that refers to a
1572/// buffer.
1573static unsigned CreateSLocBufferAbbrev(llvm::BitstreamWriter &Stream) {
1574 using namespace llvm;
1575
1576 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1577 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_BUFFER_ENTRY));
1578 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1579 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1580 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1581 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1582 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Buffer name blob
1583 return Stream.EmitAbbrev(std::move(Abbrev));
1584}
1585
1586/// Create an abbreviation for the SLocEntry that refers to a
1587/// buffer's blob.
1588static unsigned CreateSLocBufferBlobAbbrev(llvm::BitstreamWriter &Stream,
1589 bool Compressed) {
1590 using namespace llvm;
1591
1592 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1593 Abbrev->Add(BitCodeAbbrevOp(Compressed ? SM_SLOC_BUFFER_BLOB_COMPRESSED
1594 : SM_SLOC_BUFFER_BLOB));
1595 if (Compressed)
1596 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Uncompressed size
1597 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Blob
1598 return Stream.EmitAbbrev(std::move(Abbrev));
1599}
1600
1601/// Create an abbreviation for the SLocEntry that refers to a macro
1602/// expansion.
1603static unsigned CreateSLocExpansionAbbrev(llvm::BitstreamWriter &Stream) {
1604 using namespace llvm;
1605
1606 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1607 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_EXPANSION_ENTRY));
1608 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1609 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Spelling location
1610 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Start location
1611 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // End location
1612 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Is token range
1613 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Token length
1614 return Stream.EmitAbbrev(std::move(Abbrev));
1615}
1616
1617namespace {
1618
1619 // Trait used for the on-disk hash table of header search information.
1620 class HeaderFileInfoTrait {
1621 ASTWriter &Writer;
1622
1623 // Keep track of the framework names we've used during serialization.
1624 SmallVector<char, 128> FrameworkStringData;
1625 llvm::StringMap<unsigned> FrameworkNameOffset;
1626
1627 public:
1628 HeaderFileInfoTrait(ASTWriter &Writer) : Writer(Writer) {}
1629
1630 struct key_type {
1631 StringRef Filename;
1632 off_t Size;
1633 time_t ModTime;
1634 };
1635 using key_type_ref = const key_type &;
1636
1637 using UnresolvedModule =
1638 llvm::PointerIntPair<Module *, 2, ModuleMap::ModuleHeaderRole>;
1639
1640 struct data_type {
1641 const HeaderFileInfo &HFI;
1642 ArrayRef<ModuleMap::KnownHeader> KnownHeaders;
1643 UnresolvedModule Unresolved;
1644 };
1645 using data_type_ref = const data_type &;
1646
1647 using hash_value_type = unsigned;
1648 using offset_type = unsigned;
1649
1650 hash_value_type ComputeHash(key_type_ref key) {
1651 // The hash is based only on size/time of the file, so that the reader can
1652 // match even when symlinking or excess path elements ("foo/../", "../")
1653 // change the form of the name. However, complete path is still the key.
1654 return llvm::hash_combine(key.Size, key.ModTime);
1655 }
1656
1657 std::pair<unsigned, unsigned>
1658 EmitKeyDataLength(raw_ostream& Out, key_type_ref key, data_type_ref Data) {
1659 using namespace llvm::support;
1660
1661 endian::Writer LE(Out, little);
1662 unsigned KeyLen = key.Filename.size() + 1 + 8 + 8;
1663 LE.write<uint16_t>(KeyLen);
1664 unsigned DataLen = 1 + 2 + 4 + 4;
1665 for (auto ModInfo : Data.KnownHeaders)
1666 if (Writer.getLocalOrImportedSubmoduleID(ModInfo.getModule()))
1667 DataLen += 4;
1668 if (Data.Unresolved.getPointer())
1669 DataLen += 4;
1670 LE.write<uint8_t>(DataLen);
1671 return std::make_pair(KeyLen, DataLen);
1672 }
1673
1674 void EmitKey(raw_ostream& Out, key_type_ref key, unsigned KeyLen) {
1675 using namespace llvm::support;
1676
1677 endian::Writer LE(Out, little);
1678 LE.write<uint64_t>(key.Size);
1679 KeyLen -= 8;
1680 LE.write<uint64_t>(key.ModTime);
1681 KeyLen -= 8;
1682 Out.write(key.Filename.data(), KeyLen);
1683 }
1684
1685 void EmitData(raw_ostream &Out, key_type_ref key,
1686 data_type_ref Data, unsigned DataLen) {
1687 using namespace llvm::support;
1688
1689 endian::Writer LE(Out, little);
1690 uint64_t Start = Out.tell(); (void)Start;
1691
1692 unsigned char Flags = (Data.HFI.isImport << 5)
1693 | (Data.HFI.isPragmaOnce << 4)
1694 | (Data.HFI.DirInfo << 1)
1695 | Data.HFI.IndexHeaderMapHeader;
1696 LE.write<uint8_t>(Flags);
1697 LE.write<uint16_t>(Data.HFI.NumIncludes);
1698
1699 if (!Data.HFI.ControllingMacro)
1700 LE.write<uint32_t>(Data.HFI.ControllingMacroID);
1701 else
1702 LE.write<uint32_t>(Writer.getIdentifierRef(Data.HFI.ControllingMacro));
1703
1704 unsigned Offset = 0;
1705 if (!Data.HFI.Framework.empty()) {
1706 // If this header refers into a framework, save the framework name.
1707 llvm::StringMap<unsigned>::iterator Pos
1708 = FrameworkNameOffset.find(Data.HFI.Framework);
1709 if (Pos == FrameworkNameOffset.end()) {
1710 Offset = FrameworkStringData.size() + 1;
1711 FrameworkStringData.append(Data.HFI.Framework.begin(),
1712 Data.HFI.Framework.end());
1713 FrameworkStringData.push_back(0);
1714
1715 FrameworkNameOffset[Data.HFI.Framework] = Offset;
1716 } else
1717 Offset = Pos->second;
1718 }
1719 LE.write<uint32_t>(Offset);
1720
1721 auto EmitModule = [&](Module *M, ModuleMap::ModuleHeaderRole Role) {
1722 if (uint32_t ModID = Writer.getLocalOrImportedSubmoduleID(M)) {
1723 uint32_t Value = (ModID << 2) | (unsigned)Role;
1724 assert((Value >> 2) == ModID && "overflow in header module info")(((Value >> 2) == ModID && "overflow in header module info"
) ? static_cast<void> (0) : __assert_fail ("(Value >> 2) == ModID && \"overflow in header module info\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 1724, __PRETTY_FUNCTION__))
;
1725 LE.write<uint32_t>(Value);
1726 }
1727 };
1728
1729 // FIXME: If the header is excluded, we should write out some
1730 // record of that fact.
1731 for (auto ModInfo : Data.KnownHeaders)
1732 EmitModule(ModInfo.getModule(), ModInfo.getRole());
1733 if (Data.Unresolved.getPointer())
1734 EmitModule(Data.Unresolved.getPointer(), Data.Unresolved.getInt());
1735
1736 assert(Out.tell() - Start == DataLen && "Wrong data length")((Out.tell() - Start == DataLen && "Wrong data length"
) ? static_cast<void> (0) : __assert_fail ("Out.tell() - Start == DataLen && \"Wrong data length\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 1736, __PRETTY_FUNCTION__))
;
1737 }
1738
1739 const char *strings_begin() const { return FrameworkStringData.begin(); }
1740 const char *strings_end() const { return FrameworkStringData.end(); }
1741 };
1742
1743} // namespace
1744
1745/// Write the header search block for the list of files that
1746///
1747/// \param HS The header search structure to save.
1748void ASTWriter::WriteHeaderSearch(const HeaderSearch &HS) {
1749 HeaderFileInfoTrait GeneratorTrait(*this);
1750 llvm::OnDiskChainedHashTableGenerator<HeaderFileInfoTrait> Generator;
1751 SmallVector<const char *, 4> SavedStrings;
1752 unsigned NumHeaderSearchEntries = 0;
1753
1754 // Find all unresolved headers for the current module. We generally will
1755 // have resolved them before we get here, but not necessarily: we might be
1756 // compiling a preprocessed module, where there is no requirement for the
1757 // original files to exist any more.
1758 const HeaderFileInfo Empty; // So we can take a reference.
1759 if (WritingModule) {
1
Assuming field 'WritingModule' is null
2
Taking false branch
1760 llvm::SmallVector<Module *, 16> Worklist(1, WritingModule);
1761 while (!Worklist.empty()) {
1762 Module *M = Worklist.pop_back_val();
1763 // We don't care about headers in unimportable submodules.
1764 if (M->isUnimportable())
1765 continue;
1766
1767 // Map to disk files where possible, to pick up any missing stat
1768 // information. This also means we don't need to check the unresolved
1769 // headers list when emitting resolved headers in the first loop below.
1770 // FIXME: It'd be preferable to avoid doing this if we were given
1771 // sufficient stat information in the module map.
1772 HS.getModuleMap().resolveHeaderDirectives(M);
1773
1774 // If the file didn't exist, we can still create a module if we were given
1775 // enough information in the module map.
1776 for (auto U : M->MissingHeaders) {
1777 // Check that we were given enough information to build a module
1778 // without this file existing on disk.
1779 if (!U.Size || (!U.ModTime && IncludeTimestamps)) {
1780 PP->Diag(U.FileNameLoc, diag::err_module_no_size_mtime_for_header)
1781 << WritingModule->getFullModuleName() << U.Size.hasValue()
1782 << U.FileName;
1783 continue;
1784 }
1785
1786 // Form the effective relative pathname for the file.
1787 SmallString<128> Filename(M->Directory->getName());
1788 llvm::sys::path::append(Filename, U.FileName);
1789 PreparePathForOutput(Filename);
1790
1791 StringRef FilenameDup = strdup(Filename.c_str());
1792 SavedStrings.push_back(FilenameDup.data());
1793
1794 HeaderFileInfoTrait::key_type Key = {
1795 FilenameDup, *U.Size, IncludeTimestamps ? *U.ModTime : 0
1796 };
1797 HeaderFileInfoTrait::data_type Data = {
1798 Empty, {}, {M, ModuleMap::headerKindToRole(U.Kind)}
1799 };
1800 // FIXME: Deal with cases where there are multiple unresolved header
1801 // directives in different submodules for the same header.
1802 Generator.insert(Key, Data, GeneratorTrait);
1803 ++NumHeaderSearchEntries;
1804 }
1805
1806 Worklist.append(M->submodule_begin(), M->submodule_end());
1807 }
1808 }
1809
1810 SmallVector<const FileEntry *, 16> FilesByUID;
1811 HS.getFileMgr().GetUniqueIDMapping(FilesByUID);
1812
1813 if (FilesByUID.size() > HS.header_file_size())
3
Assuming the condition is false
4
Taking false branch
1814 FilesByUID.resize(HS.header_file_size());
1815
1816 for (unsigned UID = 0, LastUID = FilesByUID.size(); UID != LastUID; ++UID) {
5
Assuming 'UID' is not equal to 'LastUID'
6
Loop condition is true. Entering loop body
1817 const FileEntry *File = FilesByUID[UID];
1818 if (!File)
7
Assuming 'File' is non-null
8
Taking false branch
1819 continue;
1820
1821 // Get the file info. This will load info from the external source if
1822 // necessary. Skip emitting this file if we have no information on it
1823 // as a header file (in which case HFI will be null) or if it hasn't
1824 // changed since it was loaded. Also skip it if it's for a modular header
1825 // from a different module; in that case, we rely on the module(s)
1826 // containing the header to provide this information.
1827 const HeaderFileInfo *HFI =
1828 HS.getExistingFileInfo(File, /*WantExternal*/!Chain);
9
Assuming field 'Chain' is null
1829 if (!HFI || (HFI->isModuleHeader && !HFI->isCompilingModuleHeader))
10
Assuming 'HFI' is non-null
11
Assuming field 'isModuleHeader' is not equal to 0
12
Assuming field 'isCompilingModuleHeader' is not equal to 0
13
Taking false branch
1830 continue;
1831
1832 // Massage the file path into an appropriate form.
1833 StringRef Filename = File->getName();
1834 SmallString<128> FilenameTmp(Filename);
1835 if (PreparePathForOutput(FilenameTmp)) {
14
Assuming the condition is true
15
Taking true branch
1836 // If we performed any translation on the file name at all, we need to
1837 // save this string, since the generator will refer to it later.
1838 Filename = StringRef(strdup(FilenameTmp.c_str()));
16
Memory is allocated
17
Potential memory leak
1839 SavedStrings.push_back(Filename.data());
1840 }
1841
1842 HeaderFileInfoTrait::key_type Key = {
1843 Filename, File->getSize(), getTimestampForOutput(File)
1844 };
1845 HeaderFileInfoTrait::data_type Data = {
1846 *HFI, HS.getModuleMap().findResolvedModulesForHeader(File), {}
1847 };
1848 Generator.insert(Key, Data, GeneratorTrait);
1849 ++NumHeaderSearchEntries;
1850 }
1851
1852 // Create the on-disk hash table in a buffer.
1853 SmallString<4096> TableData;
1854 uint32_t BucketOffset;
1855 {
1856 using namespace llvm::support;
1857
1858 llvm::raw_svector_ostream Out(TableData);
1859 // Make sure that no bucket is at offset 0
1860 endian::write<uint32_t>(Out, 0, little);
1861 BucketOffset = Generator.Emit(Out, GeneratorTrait);
1862 }
1863
1864 // Create a blob abbreviation
1865 using namespace llvm;
1866
1867 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1868 Abbrev->Add(BitCodeAbbrevOp(HEADER_SEARCH_TABLE));
1869 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1870 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1871 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1872 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
1873 unsigned TableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
1874
1875 // Write the header search table
1876 RecordData::value_type Record[] = {HEADER_SEARCH_TABLE, BucketOffset,
1877 NumHeaderSearchEntries, TableData.size()};
1878 TableData.append(GeneratorTrait.strings_begin(),GeneratorTrait.strings_end());
1879 Stream.EmitRecordWithBlob(TableAbbrev, Record, TableData);
1880
1881 // Free all of the strings we had to duplicate.
1882 for (unsigned I = 0, N = SavedStrings.size(); I != N; ++I)
1883 free(const_cast<char *>(SavedStrings[I]));
1884}
1885
1886static void emitBlob(llvm::BitstreamWriter &Stream, StringRef Blob,
1887 unsigned SLocBufferBlobCompressedAbbrv,
1888 unsigned SLocBufferBlobAbbrv) {
1889 using RecordDataType = ASTWriter::RecordData::value_type;
1890
1891 // Compress the buffer if possible. We expect that almost all PCM
1892 // consumers will not want its contents.
1893 SmallString<0> CompressedBuffer;
1894 if (llvm::zlib::isAvailable()) {
1895 llvm::Error E = llvm::zlib::compress(Blob.drop_back(1), CompressedBuffer);
1896 if (!E) {
1897 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB_COMPRESSED,
1898 Blob.size() - 1};
1899 Stream.EmitRecordWithBlob(SLocBufferBlobCompressedAbbrv, Record,
1900 CompressedBuffer);
1901 return;
1902 }
1903 llvm::consumeError(std::move(E));
1904 }
1905
1906 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB};
1907 Stream.EmitRecordWithBlob(SLocBufferBlobAbbrv, Record, Blob);
1908}
1909
1910/// Writes the block containing the serialized form of the
1911/// source manager.
1912///
1913/// TODO: We should probably use an on-disk hash table (stored in a
1914/// blob), indexed based on the file name, so that we only create
1915/// entries for files that we actually need. In the common case (no
1916/// errors), we probably won't have to create file entries for any of
1917/// the files in the AST.
1918void ASTWriter::WriteSourceManagerBlock(SourceManager &SourceMgr,
1919 const Preprocessor &PP) {
1920 RecordData Record;
1921
1922 // Enter the source manager block.
1923 Stream.EnterSubblock(SOURCE_MANAGER_BLOCK_ID, 4);
1924 const uint64_t SourceManagerBlockOffset = Stream.GetCurrentBitNo();
1925
1926 // Abbreviations for the various kinds of source-location entries.
1927 unsigned SLocFileAbbrv = CreateSLocFileAbbrev(Stream);
1928 unsigned SLocBufferAbbrv = CreateSLocBufferAbbrev(Stream);
1929 unsigned SLocBufferBlobAbbrv = CreateSLocBufferBlobAbbrev(Stream, false);
1930 unsigned SLocBufferBlobCompressedAbbrv =
1931 CreateSLocBufferBlobAbbrev(Stream, true);
1932 unsigned SLocExpansionAbbrv = CreateSLocExpansionAbbrev(Stream);
1933
1934 // Write out the source location entry table. We skip the first
1935 // entry, which is always the same dummy entry.
1936 std::vector<uint32_t> SLocEntryOffsets;
1937 uint64_t SLocEntryOffsetsBase = Stream.GetCurrentBitNo();
1938 RecordData PreloadSLocs;
1939 SLocEntryOffsets.reserve(SourceMgr.local_sloc_entry_size() - 1);
1940 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size();
1941 I != N; ++I) {
1942 // Get this source location entry.
1943 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
1944 FileID FID = FileID::get(I);
1945 assert(&SourceMgr.getSLocEntry(FID) == SLoc)((&SourceMgr.getSLocEntry(FID) == SLoc) ? static_cast<
void> (0) : __assert_fail ("&SourceMgr.getSLocEntry(FID) == SLoc"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 1945, __PRETTY_FUNCTION__))
;
1946
1947 // Record the offset of this source-location entry.
1948 uint64_t Offset = Stream.GetCurrentBitNo() - SLocEntryOffsetsBase;
1949 assert((Offset >> 32) == 0 && "SLocEntry offset too large")(((Offset >> 32) == 0 && "SLocEntry offset too large"
) ? static_cast<void> (0) : __assert_fail ("(Offset >> 32) == 0 && \"SLocEntry offset too large\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 1949, __PRETTY_FUNCTION__))
;
1950 SLocEntryOffsets.push_back(Offset);
1951
1952 // Figure out which record code to use.
1953 unsigned Code;
1954 if (SLoc->isFile()) {
1955 const SrcMgr::ContentCache *Cache = SLoc->getFile().getContentCache();
1956 if (Cache->OrigEntry) {
1957 Code = SM_SLOC_FILE_ENTRY;
1958 } else
1959 Code = SM_SLOC_BUFFER_ENTRY;
1960 } else
1961 Code = SM_SLOC_EXPANSION_ENTRY;
1962 Record.clear();
1963 Record.push_back(Code);
1964
1965 // Starting offset of this entry within this module, so skip the dummy.
1966 Record.push_back(SLoc->getOffset() - 2);
1967 if (SLoc->isFile()) {
1968 const SrcMgr::FileInfo &File = SLoc->getFile();
1969 AddSourceLocation(File.getIncludeLoc(), Record);
1970 Record.push_back(File.getFileCharacteristic()); // FIXME: stable encoding
1971 Record.push_back(File.hasLineDirectives());
1972
1973 const SrcMgr::ContentCache *Content = File.getContentCache();
1974 bool EmitBlob = false;
1975 if (Content->OrigEntry) {
1976 assert(Content->OrigEntry == Content->ContentsEntry &&((Content->OrigEntry == Content->ContentsEntry &&
"Writing to AST an overridden file is not supported") ? static_cast
<void> (0) : __assert_fail ("Content->OrigEntry == Content->ContentsEntry && \"Writing to AST an overridden file is not supported\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 1977, __PRETTY_FUNCTION__))
1977 "Writing to AST an overridden file is not supported")((Content->OrigEntry == Content->ContentsEntry &&
"Writing to AST an overridden file is not supported") ? static_cast
<void> (0) : __assert_fail ("Content->OrigEntry == Content->ContentsEntry && \"Writing to AST an overridden file is not supported\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 1977, __PRETTY_FUNCTION__))
;
1978
1979 // The source location entry is a file. Emit input file ID.
1980 assert(InputFileIDs[Content->OrigEntry] != 0 && "Missed file entry")((InputFileIDs[Content->OrigEntry] != 0 && "Missed file entry"
) ? static_cast<void> (0) : __assert_fail ("InputFileIDs[Content->OrigEntry] != 0 && \"Missed file entry\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 1980, __PRETTY_FUNCTION__))
;
1981 Record.push_back(InputFileIDs[Content->OrigEntry]);
1982
1983 Record.push_back(File.NumCreatedFIDs);
1984
1985 FileDeclIDsTy::iterator FDI = FileDeclIDs.find(FID);
1986 if (FDI != FileDeclIDs.end()) {
1987 Record.push_back(FDI->second->FirstDeclIndex);
1988 Record.push_back(FDI->second->DeclIDs.size());
1989 } else {
1990 Record.push_back(0);
1991 Record.push_back(0);
1992 }
1993
1994 Stream.EmitRecordWithAbbrev(SLocFileAbbrv, Record);
1995
1996 if (Content->BufferOverridden || Content->IsTransient)
1997 EmitBlob = true;
1998 } else {
1999 // The source location entry is a buffer. The blob associated
2000 // with this entry contains the contents of the buffer.
2001
2002 // We add one to the size so that we capture the trailing NULL
2003 // that is required by llvm::MemoryBuffer::getMemBuffer (on
2004 // the reader side).
2005 const llvm::MemoryBuffer *Buffer =
2006 Content->getBuffer(PP.getDiagnostics(), PP.getFileManager());
2007 StringRef Name = Buffer->getBufferIdentifier();
2008 Stream.EmitRecordWithBlob(SLocBufferAbbrv, Record,
2009 StringRef(Name.data(), Name.size() + 1));
2010 EmitBlob = true;
2011
2012 if (Name == "<built-in>")
2013 PreloadSLocs.push_back(SLocEntryOffsets.size());
2014 }
2015
2016 if (EmitBlob) {
2017 // Include the implicit terminating null character in the on-disk buffer
2018 // if we're writing it uncompressed.
2019 const llvm::MemoryBuffer *Buffer =
2020 Content->getBuffer(PP.getDiagnostics(), PP.getFileManager());
2021 StringRef Blob(Buffer->getBufferStart(), Buffer->getBufferSize() + 1);
2022 emitBlob(Stream, Blob, SLocBufferBlobCompressedAbbrv,
2023 SLocBufferBlobAbbrv);
2024 }
2025 } else {
2026 // The source location entry is a macro expansion.
2027 const SrcMgr::ExpansionInfo &Expansion = SLoc->getExpansion();
2028 AddSourceLocation(Expansion.getSpellingLoc(), Record);
2029 AddSourceLocation(Expansion.getExpansionLocStart(), Record);
2030 AddSourceLocation(Expansion.isMacroArgExpansion()
2031 ? SourceLocation()
2032 : Expansion.getExpansionLocEnd(),
2033 Record);
2034 Record.push_back(Expansion.isExpansionTokenRange());
2035
2036 // Compute the token length for this macro expansion.
2037 unsigned NextOffset = SourceMgr.getNextLocalOffset();
2038 if (I + 1 != N)
2039 NextOffset = SourceMgr.getLocalSLocEntry(I + 1).getOffset();
2040 Record.push_back(NextOffset - SLoc->getOffset() - 1);
2041 Stream.EmitRecordWithAbbrev(SLocExpansionAbbrv, Record);
2042 }
2043 }
2044
2045 Stream.ExitBlock();
2046
2047 if (SLocEntryOffsets.empty())
2048 return;
2049
2050 // Write the source-location offsets table into the AST block. This
2051 // table is used for lazily loading source-location information.
2052 using namespace llvm;
2053
2054 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2055 Abbrev->Add(BitCodeAbbrevOp(SOURCE_LOCATION_OFFSETS));
2056 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs
2057 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // total size
2058 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // base offset
2059 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets
2060 unsigned SLocOffsetsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2061 {
2062 RecordData::value_type Record[] = {
2063 SOURCE_LOCATION_OFFSETS, SLocEntryOffsets.size(),
2064 SourceMgr.getNextLocalOffset() - 1 /* skip dummy */,
2065 SLocEntryOffsetsBase - SourceManagerBlockOffset};
2066 Stream.EmitRecordWithBlob(SLocOffsetsAbbrev, Record,
2067 bytes(SLocEntryOffsets));
2068 }
2069 // Write the source location entry preloads array, telling the AST
2070 // reader which source locations entries it should load eagerly.
2071 Stream.EmitRecord(SOURCE_LOCATION_PRELOADS, PreloadSLocs);
2072
2073 // Write the line table. It depends on remapping working, so it must come
2074 // after the source location offsets.
2075 if (SourceMgr.hasLineTable()) {
2076 LineTableInfo &LineTable = SourceMgr.getLineTable();
2077
2078 Record.clear();
2079
2080 // Emit the needed file names.
2081 llvm::DenseMap<int, int> FilenameMap;
2082 FilenameMap[-1] = -1; // For unspecified filenames.
2083 for (const auto &L : LineTable) {
2084 if (L.first.ID < 0)
2085 continue;
2086 for (auto &LE : L.second) {
2087 if (FilenameMap.insert(std::make_pair(LE.FilenameID,
2088 FilenameMap.size() - 1)).second)
2089 AddPath(LineTable.getFilename(LE.FilenameID), Record);
2090 }
2091 }
2092 Record.push_back(0);
2093
2094 // Emit the line entries
2095 for (const auto &L : LineTable) {
2096 // Only emit entries for local files.
2097 if (L.first.ID < 0)
2098 continue;
2099
2100 // Emit the file ID
2101 Record.push_back(L.first.ID);
2102
2103 // Emit the line entries
2104 Record.push_back(L.second.size());
2105 for (const auto &LE : L.second) {
2106 Record.push_back(LE.FileOffset);
2107 Record.push_back(LE.LineNo);
2108 Record.push_back(FilenameMap[LE.FilenameID]);
2109 Record.push_back((unsigned)LE.FileKind);
2110 Record.push_back(LE.IncludeOffset);
2111 }
2112 }
2113
2114 Stream.EmitRecord(SOURCE_MANAGER_LINE_TABLE, Record);
2115 }
2116}
2117
2118//===----------------------------------------------------------------------===//
2119// Preprocessor Serialization
2120//===----------------------------------------------------------------------===//
2121
2122static bool shouldIgnoreMacro(MacroDirective *MD, bool IsModule,
2123 const Preprocessor &PP) {
2124 if (MacroInfo *MI = MD->getMacroInfo())
2125 if (MI->isBuiltinMacro())
2126 return true;
2127
2128 if (IsModule) {
2129 SourceLocation Loc = MD->getLocation();
2130 if (Loc.isInvalid())
2131 return true;
2132 if (PP.getSourceManager().getFileID(Loc) == PP.getPredefinesFileID())
2133 return true;
2134 }
2135
2136 return false;
2137}
2138
2139/// Writes the block containing the serialized form of the
2140/// preprocessor.
2141void ASTWriter::WritePreprocessor(const Preprocessor &PP, bool IsModule) {
2142 uint64_t MacroOffsetsBase = Stream.GetCurrentBitNo();
2143
2144 PreprocessingRecord *PPRec = PP.getPreprocessingRecord();
2145 if (PPRec)
2146 WritePreprocessorDetail(*PPRec, MacroOffsetsBase);
2147
2148 RecordData Record;
2149 RecordData ModuleMacroRecord;
2150
2151 // If the preprocessor __COUNTER__ value has been bumped, remember it.
2152 if (PP.getCounterValue() != 0) {
2153 RecordData::value_type Record[] = {PP.getCounterValue()};
2154 Stream.EmitRecord(PP_COUNTER_VALUE, Record);
2155 }
2156
2157 if (PP.isRecordingPreamble() && PP.hasRecordedPreamble()) {
2158 assert(!IsModule)((!IsModule) ? static_cast<void> (0) : __assert_fail ("!IsModule"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 2158, __PRETTY_FUNCTION__))
;
2159 auto SkipInfo = PP.getPreambleSkipInfo();
2160 if (SkipInfo.hasValue()) {
2161 Record.push_back(true);
2162 AddSourceLocation(SkipInfo->HashTokenLoc, Record);
2163 AddSourceLocation(SkipInfo->IfTokenLoc, Record);
2164 Record.push_back(SkipInfo->FoundNonSkipPortion);
2165 Record.push_back(SkipInfo->FoundElse);
2166 AddSourceLocation(SkipInfo->ElseLoc, Record);
2167 } else {
2168 Record.push_back(false);
2169 }
2170 for (const auto &Cond : PP.getPreambleConditionalStack()) {
2171 AddSourceLocation(Cond.IfLoc, Record);
2172 Record.push_back(Cond.WasSkipping);
2173 Record.push_back(Cond.FoundNonSkip);
2174 Record.push_back(Cond.FoundElse);
2175 }
2176 Stream.EmitRecord(PP_CONDITIONAL_STACK, Record);
2177 Record.clear();
2178 }
2179
2180 // Enter the preprocessor block.
2181 Stream.EnterSubblock(PREPROCESSOR_BLOCK_ID, 3);
2182
2183 // If the AST file contains __DATE__ or __TIME__ emit a warning about this.
2184 // FIXME: Include a location for the use, and say which one was used.
2185 if (PP.SawDateOrTime())
2186 PP.Diag(SourceLocation(), diag::warn_module_uses_date_time) << IsModule;
2187
2188 // Loop over all the macro directives that are live at the end of the file,
2189 // emitting each to the PP section.
2190
2191 // Construct the list of identifiers with macro directives that need to be
2192 // serialized.
2193 SmallVector<const IdentifierInfo *, 128> MacroIdentifiers;
2194 for (auto &Id : PP.getIdentifierTable())
2195 if (Id.second->hadMacroDefinition() &&
2196 (!Id.second->isFromAST() ||
2197 Id.second->hasChangedSinceDeserialization()))
2198 MacroIdentifiers.push_back(Id.second);
2199 // Sort the set of macro definitions that need to be serialized by the
2200 // name of the macro, to provide a stable ordering.
2201 llvm::sort(MacroIdentifiers, llvm::deref<std::less<>>());
2202
2203 // Emit the macro directives as a list and associate the offset with the
2204 // identifier they belong to.
2205 for (const IdentifierInfo *Name : MacroIdentifiers) {
2206 MacroDirective *MD = PP.getLocalMacroDirectiveHistory(Name);
2207 uint64_t StartOffset = Stream.GetCurrentBitNo() - MacroOffsetsBase;
2208 assert((StartOffset >> 32) == 0 && "Macro identifiers offset too large")(((StartOffset >> 32) == 0 && "Macro identifiers offset too large"
) ? static_cast<void> (0) : __assert_fail ("(StartOffset >> 32) == 0 && \"Macro identifiers offset too large\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 2208, __PRETTY_FUNCTION__))
;
2209
2210 // Emit the macro directives in reverse source order.
2211 for (; MD; MD = MD->getPrevious()) {
2212 // Once we hit an ignored macro, we're done: the rest of the chain
2213 // will all be ignored macros.
2214 if (shouldIgnoreMacro(MD, IsModule, PP))
2215 break;
2216
2217 AddSourceLocation(MD->getLocation(), Record);
2218 Record.push_back(MD->getKind());
2219 if (auto *DefMD = dyn_cast<DefMacroDirective>(MD)) {
2220 Record.push_back(getMacroRef(DefMD->getInfo(), Name));
2221 } else if (auto *VisMD = dyn_cast<VisibilityMacroDirective>(MD)) {
2222 Record.push_back(VisMD->isPublic());
2223 }
2224 }
2225
2226 // Write out any exported module macros.
2227 bool EmittedModuleMacros = false;
2228 // We write out exported module macros for PCH as well.
2229 auto Leafs = PP.getLeafModuleMacros(Name);
2230 SmallVector<ModuleMacro*, 8> Worklist(Leafs.begin(), Leafs.end());
2231 llvm::DenseMap<ModuleMacro*, unsigned> Visits;
2232 while (!Worklist.empty()) {
2233 auto *Macro = Worklist.pop_back_val();
2234
2235 // Emit a record indicating this submodule exports this macro.
2236 ModuleMacroRecord.push_back(
2237 getSubmoduleID(Macro->getOwningModule()));
2238 ModuleMacroRecord.push_back(getMacroRef(Macro->getMacroInfo(), Name));
2239 for (auto *M : Macro->overrides())
2240 ModuleMacroRecord.push_back(getSubmoduleID(M->getOwningModule()));
2241
2242 Stream.EmitRecord(PP_MODULE_MACRO, ModuleMacroRecord);
2243 ModuleMacroRecord.clear();
2244
2245 // Enqueue overridden macros once we've visited all their ancestors.
2246 for (auto *M : Macro->overrides())
2247 if (++Visits[M] == M->getNumOverridingMacros())
2248 Worklist.push_back(M);
2249
2250 EmittedModuleMacros = true;
2251 }
2252
2253 if (Record.empty() && !EmittedModuleMacros)
2254 continue;
2255
2256 IdentMacroDirectivesOffsetMap[Name] = StartOffset;
2257 Stream.EmitRecord(PP_MACRO_DIRECTIVE_HISTORY, Record);
2258 Record.clear();
2259 }
2260
2261 /// Offsets of each of the macros into the bitstream, indexed by
2262 /// the local macro ID
2263 ///
2264 /// For each identifier that is associated with a macro, this map
2265 /// provides the offset into the bitstream where that macro is
2266 /// defined.
2267 std::vector<uint32_t> MacroOffsets;
2268
2269 for (unsigned I = 0, N = MacroInfosToEmit.size(); I != N; ++I) {
2270 const IdentifierInfo *Name = MacroInfosToEmit[I].Name;
2271 MacroInfo *MI = MacroInfosToEmit[I].MI;
2272 MacroID ID = MacroInfosToEmit[I].ID;
2273
2274 if (ID < FirstMacroID) {
2275 assert(0 && "Loaded MacroInfo entered MacroInfosToEmit ?")((0 && "Loaded MacroInfo entered MacroInfosToEmit ?")
? static_cast<void> (0) : __assert_fail ("0 && \"Loaded MacroInfo entered MacroInfosToEmit ?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 2275, __PRETTY_FUNCTION__))
;
2276 continue;
2277 }
2278
2279 // Record the local offset of this macro.
2280 unsigned Index = ID - FirstMacroID;
2281 if (Index >= MacroOffsets.size())
2282 MacroOffsets.resize(Index + 1);
2283
2284 uint64_t Offset = Stream.GetCurrentBitNo() - MacroOffsetsBase;
2285 assert((Offset >> 32) == 0 && "Macro offset too large")(((Offset >> 32) == 0 && "Macro offset too large"
) ? static_cast<void> (0) : __assert_fail ("(Offset >> 32) == 0 && \"Macro offset too large\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 2285, __PRETTY_FUNCTION__))
;
2286 MacroOffsets[Index] = Offset;
2287
2288 AddIdentifierRef(Name, Record);
2289 AddSourceLocation(MI->getDefinitionLoc(), Record);
2290 AddSourceLocation(MI->getDefinitionEndLoc(), Record);
2291 Record.push_back(MI->isUsed());
2292 Record.push_back(MI->isUsedForHeaderGuard());
2293 unsigned Code;
2294 if (MI->isObjectLike()) {
2295 Code = PP_MACRO_OBJECT_LIKE;
2296 } else {
2297 Code = PP_MACRO_FUNCTION_LIKE;
2298
2299 Record.push_back(MI->isC99Varargs());
2300 Record.push_back(MI->isGNUVarargs());
2301 Record.push_back(MI->hasCommaPasting());
2302 Record.push_back(MI->getNumParams());
2303 for (const IdentifierInfo *Param : MI->params())
2304 AddIdentifierRef(Param, Record);
2305 }
2306
2307 // If we have a detailed preprocessing record, record the macro definition
2308 // ID that corresponds to this macro.
2309 if (PPRec)
2310 Record.push_back(MacroDefinitions[PPRec->findMacroDefinition(MI)]);
2311
2312 Stream.EmitRecord(Code, Record);
2313 Record.clear();
2314
2315 // Emit the tokens array.
2316 for (unsigned TokNo = 0, e = MI->getNumTokens(); TokNo != e; ++TokNo) {
2317 // Note that we know that the preprocessor does not have any annotation
2318 // tokens in it because they are created by the parser, and thus can't
2319 // be in a macro definition.
2320 const Token &Tok = MI->getReplacementToken(TokNo);
2321 AddToken(Tok, Record);
2322 Stream.EmitRecord(PP_TOKEN, Record);
2323 Record.clear();
2324 }
2325 ++NumMacros;
2326 }
2327
2328 Stream.ExitBlock();
2329
2330 // Write the offsets table for macro IDs.
2331 using namespace llvm;
2332
2333 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2334 Abbrev->Add(BitCodeAbbrevOp(MACRO_OFFSET));
2335 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of macros
2336 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
2337 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // base offset
2338 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2339
2340 unsigned MacroOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2341 {
2342 RecordData::value_type Record[] = {MACRO_OFFSET, MacroOffsets.size(),
2343 FirstMacroID - NUM_PREDEF_MACRO_IDS,
2344 MacroOffsetsBase - ASTBlockStartOffset};
2345 Stream.EmitRecordWithBlob(MacroOffsetAbbrev, Record, bytes(MacroOffsets));
2346 }
2347}
2348
2349void ASTWriter::WritePreprocessorDetail(PreprocessingRecord &PPRec,
2350 uint64_t MacroOffsetsBase) {
2351 if (PPRec.local_begin() == PPRec.local_end())
2352 return;
2353
2354 SmallVector<PPEntityOffset, 64> PreprocessedEntityOffsets;
2355
2356 // Enter the preprocessor block.
2357 Stream.EnterSubblock(PREPROCESSOR_DETAIL_BLOCK_ID, 3);
2358
2359 // If the preprocessor has a preprocessing record, emit it.
2360 unsigned NumPreprocessingRecords = 0;
2361 using namespace llvm;
2362
2363 // Set up the abbreviation for
2364 unsigned InclusionAbbrev = 0;
2365 {
2366 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2367 Abbrev->Add(BitCodeAbbrevOp(PPD_INCLUSION_DIRECTIVE));
2368 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // filename length
2369 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // in quotes
2370 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // kind
2371 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // imported module
2372 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2373 InclusionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2374 }
2375
2376 unsigned FirstPreprocessorEntityID
2377 = (Chain ? PPRec.getNumLoadedPreprocessedEntities() : 0)
2378 + NUM_PREDEF_PP_ENTITY_IDS;
2379 unsigned NextPreprocessorEntityID = FirstPreprocessorEntityID;
2380 RecordData Record;
2381 for (PreprocessingRecord::iterator E = PPRec.local_begin(),
2382 EEnd = PPRec.local_end();
2383 E != EEnd;
2384 (void)++E, ++NumPreprocessingRecords, ++NextPreprocessorEntityID) {
2385 Record.clear();
2386
2387 uint64_t Offset = Stream.GetCurrentBitNo() - MacroOffsetsBase;
2388 assert((Offset >> 32) == 0 && "Preprocessed entity offset too large")(((Offset >> 32) == 0 && "Preprocessed entity offset too large"
) ? static_cast<void> (0) : __assert_fail ("(Offset >> 32) == 0 && \"Preprocessed entity offset too large\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 2388, __PRETTY_FUNCTION__))
;
2389 PreprocessedEntityOffsets.push_back(
2390 PPEntityOffset((*E)->getSourceRange(), Offset));
2391
2392 if (auto *MD = dyn_cast<MacroDefinitionRecord>(*E)) {
2393 // Record this macro definition's ID.
2394 MacroDefinitions[MD] = NextPreprocessorEntityID;
2395
2396 AddIdentifierRef(MD->getName(), Record);
2397 Stream.EmitRecord(PPD_MACRO_DEFINITION, Record);
2398 continue;
2399 }
2400
2401 if (auto *ME = dyn_cast<MacroExpansion>(*E)) {
2402 Record.push_back(ME->isBuiltinMacro());
2403 if (ME->isBuiltinMacro())
2404 AddIdentifierRef(ME->getName(), Record);
2405 else
2406 Record.push_back(MacroDefinitions[ME->getDefinition()]);
2407 Stream.EmitRecord(PPD_MACRO_EXPANSION, Record);
2408 continue;
2409 }
2410
2411 if (auto *ID = dyn_cast<InclusionDirective>(*E)) {
2412 Record.push_back(PPD_INCLUSION_DIRECTIVE);
2413 Record.push_back(ID->getFileName().size());
2414 Record.push_back(ID->wasInQuotes());
2415 Record.push_back(static_cast<unsigned>(ID->getKind()));
2416 Record.push_back(ID->importedModule());
2417 SmallString<64> Buffer;
2418 Buffer += ID->getFileName();
2419 // Check that the FileEntry is not null because it was not resolved and
2420 // we create a PCH even with compiler errors.
2421 if (ID->getFile())
2422 Buffer += ID->getFile()->getName();
2423 Stream.EmitRecordWithBlob(InclusionAbbrev, Record, Buffer);
2424 continue;
2425 }
2426
2427 llvm_unreachable("Unhandled PreprocessedEntity in ASTWriter")::llvm::llvm_unreachable_internal("Unhandled PreprocessedEntity in ASTWriter"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 2427)
;
2428 }
2429 Stream.ExitBlock();
2430
2431 // Write the offsets table for the preprocessing record.
2432 if (NumPreprocessingRecords > 0) {
2433 assert(PreprocessedEntityOffsets.size() == NumPreprocessingRecords)((PreprocessedEntityOffsets.size() == NumPreprocessingRecords
) ? static_cast<void> (0) : __assert_fail ("PreprocessedEntityOffsets.size() == NumPreprocessingRecords"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 2433, __PRETTY_FUNCTION__))
;
2434
2435 // Write the offsets table for identifier IDs.
2436 using namespace llvm;
2437
2438 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2439 Abbrev->Add(BitCodeAbbrevOp(PPD_ENTITIES_OFFSETS));
2440 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first pp entity
2441 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2442 unsigned PPEOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2443
2444 RecordData::value_type Record[] = {PPD_ENTITIES_OFFSETS,
2445 FirstPreprocessorEntityID -
2446 NUM_PREDEF_PP_ENTITY_IDS};
2447 Stream.EmitRecordWithBlob(PPEOffsetAbbrev, Record,
2448 bytes(PreprocessedEntityOffsets));
2449 }
2450
2451 // Write the skipped region table for the preprocessing record.
2452 ArrayRef<SourceRange> SkippedRanges = PPRec.getSkippedRanges();
2453 if (SkippedRanges.size() > 0) {
2454 std::vector<PPSkippedRange> SerializedSkippedRanges;
2455 SerializedSkippedRanges.reserve(SkippedRanges.size());
2456 for (auto const& Range : SkippedRanges)
2457 SerializedSkippedRanges.emplace_back(Range);
2458
2459 using namespace llvm;
2460 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2461 Abbrev->Add(BitCodeAbbrevOp(PPD_SKIPPED_RANGES));
2462 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2463 unsigned PPESkippedRangeAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2464
2465 Record.clear();
2466 Record.push_back(PPD_SKIPPED_RANGES);
2467 Stream.EmitRecordWithBlob(PPESkippedRangeAbbrev, Record,
2468 bytes(SerializedSkippedRanges));
2469 }
2470}
2471
2472unsigned ASTWriter::getLocalOrImportedSubmoduleID(Module *Mod) {
2473 if (!Mod)
2474 return 0;
2475
2476 llvm::DenseMap<Module *, unsigned>::iterator Known = SubmoduleIDs.find(Mod);
2477 if (Known != SubmoduleIDs.end())
2478 return Known->second;
2479
2480 auto *Top = Mod->getTopLevelModule();
2481 if (Top != WritingModule &&
2482 (getLangOpts().CompilingPCH ||
2483 !Top->fullModuleNameIs(StringRef(getLangOpts().CurrentModule))))
2484 return 0;
2485
2486 return SubmoduleIDs[Mod] = NextSubmoduleID++;
2487}
2488
2489unsigned ASTWriter::getSubmoduleID(Module *Mod) {
2490 // FIXME: This can easily happen, if we have a reference to a submodule that
2491 // did not result in us loading a module file for that submodule. For
2492 // instance, a cross-top-level-module 'conflict' declaration will hit this.
2493 unsigned ID = getLocalOrImportedSubmoduleID(Mod);
2494 assert((ID || !Mod) &&(((ID || !Mod) && "asked for module ID for non-local, non-imported module"
) ? static_cast<void> (0) : __assert_fail ("(ID || !Mod) && \"asked for module ID for non-local, non-imported module\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 2495, __PRETTY_FUNCTION__))
2495 "asked for module ID for non-local, non-imported module")(((ID || !Mod) && "asked for module ID for non-local, non-imported module"
) ? static_cast<void> (0) : __assert_fail ("(ID || !Mod) && \"asked for module ID for non-local, non-imported module\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 2495, __PRETTY_FUNCTION__))
;
2496 return ID;
2497}
2498
2499/// Compute the number of modules within the given tree (including the
2500/// given module).
2501static unsigned getNumberOfModules(Module *Mod) {
2502 unsigned ChildModules = 0;
2503 for (auto Sub = Mod->submodule_begin(), SubEnd = Mod->submodule_end();
2504 Sub != SubEnd; ++Sub)
2505 ChildModules += getNumberOfModules(*Sub);
2506
2507 return ChildModules + 1;
2508}
2509
2510void ASTWriter::WriteSubmodules(Module *WritingModule) {
2511 // Enter the submodule description block.
2512 Stream.EnterSubblock(SUBMODULE_BLOCK_ID, /*bits for abbreviations*/5);
2513
2514 // Write the abbreviations needed for the submodules block.
2515 using namespace llvm;
2516
2517 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2518 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_DEFINITION));
2519 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
2520 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Parent
2521 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Kind
2522 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2523 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExplicit
2524 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsSystem
2525 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExternC
2526 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferSubmodules...
2527 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExplicit...
2528 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExportWild...
2529 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ConfigMacrosExh...
2530 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModuleMapIsPriv...
2531 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2532 unsigned DefinitionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2533
2534 Abbrev = std::make_shared<BitCodeAbbrev>();
2535 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_HEADER));
2536 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2537 unsigned UmbrellaAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2538
2539 Abbrev = std::make_shared<BitCodeAbbrev>();
2540 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_HEADER));
2541 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2542 unsigned HeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2543
2544 Abbrev = std::make_shared<BitCodeAbbrev>();
2545 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TOPHEADER));
2546 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2547 unsigned TopHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2548
2549 Abbrev = std::make_shared<BitCodeAbbrev>();
2550 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_DIR));
2551 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2552 unsigned UmbrellaDirAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2553
2554 Abbrev = std::make_shared<BitCodeAbbrev>();
2555 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_REQUIRES));
2556 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // State
2557 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Feature
2558 unsigned RequiresAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2559
2560 Abbrev = std::make_shared<BitCodeAbbrev>();
2561 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXCLUDED_HEADER));
2562 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2563 unsigned ExcludedHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2564
2565 Abbrev = std::make_shared<BitCodeAbbrev>();
2566 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TEXTUAL_HEADER));
2567 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2568 unsigned TextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2569
2570 Abbrev = std::make_shared<BitCodeAbbrev>();
2571 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_HEADER));
2572 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2573 unsigned PrivateHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2574
2575 Abbrev = std::make_shared<BitCodeAbbrev>();
2576 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_TEXTUAL_HEADER));
2577 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2578 unsigned PrivateTextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2579
2580 Abbrev = std::make_shared<BitCodeAbbrev>();
2581 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_LINK_LIBRARY));
2582 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2583 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2584 unsigned LinkLibraryAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2585
2586 Abbrev = std::make_shared<BitCodeAbbrev>();
2587 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFIG_MACRO));
2588 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2589 unsigned ConfigMacroAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2590
2591 Abbrev = std::make_shared<BitCodeAbbrev>();
2592 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFLICT));
2593 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Other module
2594 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Message
2595 unsigned ConflictAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2596
2597 Abbrev = std::make_shared<BitCodeAbbrev>();
2598 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXPORT_AS));
2599 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2600 unsigned ExportAsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2601
2602 // Write the submodule metadata block.
2603 RecordData::value_type Record[] = {
2604 getNumberOfModules(WritingModule),
2605 FirstSubmoduleID - NUM_PREDEF_SUBMODULE_IDS};
2606 Stream.EmitRecord(SUBMODULE_METADATA, Record);
2607
2608 // Write all of the submodules.
2609 std::queue<Module *> Q;
2610 Q.push(WritingModule);
2611 while (!Q.empty()) {
2612 Module *Mod = Q.front();
2613 Q.pop();
2614 unsigned ID = getSubmoduleID(Mod);
2615
2616 uint64_t ParentID = 0;
2617 if (Mod->Parent) {
2618 assert(SubmoduleIDs[Mod->Parent] && "Submodule parent not written?")((SubmoduleIDs[Mod->Parent] && "Submodule parent not written?"
) ? static_cast<void> (0) : __assert_fail ("SubmoduleIDs[Mod->Parent] && \"Submodule parent not written?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 2618, __PRETTY_FUNCTION__))
;
2619 ParentID = SubmoduleIDs[Mod->Parent];
2620 }
2621
2622 // Emit the definition of the block.
2623 {
2624 RecordData::value_type Record[] = {SUBMODULE_DEFINITION,
2625 ID,
2626 ParentID,
2627 (RecordData::value_type)Mod->Kind,
2628 Mod->IsFramework,
2629 Mod->IsExplicit,
2630 Mod->IsSystem,
2631 Mod->IsExternC,
2632 Mod->InferSubmodules,
2633 Mod->InferExplicitSubmodules,
2634 Mod->InferExportWildcard,
2635 Mod->ConfigMacrosExhaustive,
2636 Mod->ModuleMapIsPrivate};
2637 Stream.EmitRecordWithBlob(DefinitionAbbrev, Record, Mod->Name);
2638 }
2639
2640 // Emit the requirements.
2641 for (const auto &R : Mod->Requirements) {
2642 RecordData::value_type Record[] = {SUBMODULE_REQUIRES, R.second};
2643 Stream.EmitRecordWithBlob(RequiresAbbrev, Record, R.first);
2644 }
2645
2646 // Emit the umbrella header, if there is one.
2647 if (auto UmbrellaHeader = Mod->getUmbrellaHeader()) {
2648 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_HEADER};
2649 Stream.EmitRecordWithBlob(UmbrellaAbbrev, Record,
2650 UmbrellaHeader.NameAsWritten);
2651 } else if (auto UmbrellaDir = Mod->getUmbrellaDir()) {
2652 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_DIR};
2653 Stream.EmitRecordWithBlob(UmbrellaDirAbbrev, Record,
2654 UmbrellaDir.NameAsWritten);
2655 }
2656
2657 // Emit the headers.
2658 struct {
2659 unsigned RecordKind;
2660 unsigned Abbrev;
2661 Module::HeaderKind HeaderKind;
2662 } HeaderLists[] = {
2663 {SUBMODULE_HEADER, HeaderAbbrev, Module::HK_Normal},
2664 {SUBMODULE_TEXTUAL_HEADER, TextualHeaderAbbrev, Module::HK_Textual},
2665 {SUBMODULE_PRIVATE_HEADER, PrivateHeaderAbbrev, Module::HK_Private},
2666 {SUBMODULE_PRIVATE_TEXTUAL_HEADER, PrivateTextualHeaderAbbrev,
2667 Module::HK_PrivateTextual},
2668 {SUBMODULE_EXCLUDED_HEADER, ExcludedHeaderAbbrev, Module::HK_Excluded}
2669 };
2670 for (auto &HL : HeaderLists) {
2671 RecordData::value_type Record[] = {HL.RecordKind};
2672 for (auto &H : Mod->Headers[HL.HeaderKind])
2673 Stream.EmitRecordWithBlob(HL.Abbrev, Record, H.NameAsWritten);
2674 }
2675
2676 // Emit the top headers.
2677 {
2678 auto TopHeaders = Mod->getTopHeaders(PP->getFileManager());
2679 RecordData::value_type Record[] = {SUBMODULE_TOPHEADER};
2680 for (auto *H : TopHeaders)
2681 Stream.EmitRecordWithBlob(TopHeaderAbbrev, Record, H->getName());
2682 }
2683
2684 // Emit the imports.
2685 if (!Mod->Imports.empty()) {
2686 RecordData Record;
2687 for (auto *I : Mod->Imports)
2688 Record.push_back(getSubmoduleID(I));
2689 Stream.EmitRecord(SUBMODULE_IMPORTS, Record);
2690 }
2691
2692 // Emit the exports.
2693 if (!Mod->Exports.empty()) {
2694 RecordData Record;
2695 for (const auto &E : Mod->Exports) {
2696 // FIXME: This may fail; we don't require that all exported modules
2697 // are local or imported.
2698 Record.push_back(getSubmoduleID(E.getPointer()));
2699 Record.push_back(E.getInt());
2700 }
2701 Stream.EmitRecord(SUBMODULE_EXPORTS, Record);
2702 }
2703
2704 //FIXME: How do we emit the 'use'd modules? They may not be submodules.
2705 // Might be unnecessary as use declarations are only used to build the
2706 // module itself.
2707
2708 // Emit the link libraries.
2709 for (const auto &LL : Mod->LinkLibraries) {
2710 RecordData::value_type Record[] = {SUBMODULE_LINK_LIBRARY,
2711 LL.IsFramework};
2712 Stream.EmitRecordWithBlob(LinkLibraryAbbrev, Record, LL.Library);
2713 }
2714
2715 // Emit the conflicts.
2716 for (const auto &C : Mod->Conflicts) {
2717 // FIXME: This may fail; we don't require that all conflicting modules
2718 // are local or imported.
2719 RecordData::value_type Record[] = {SUBMODULE_CONFLICT,
2720 getSubmoduleID(C.Other)};
2721 Stream.EmitRecordWithBlob(ConflictAbbrev, Record, C.Message);
2722 }
2723
2724 // Emit the configuration macros.
2725 for (const auto &CM : Mod->ConfigMacros) {
2726 RecordData::value_type Record[] = {SUBMODULE_CONFIG_MACRO};
2727 Stream.EmitRecordWithBlob(ConfigMacroAbbrev, Record, CM);
2728 }
2729
2730 // Emit the initializers, if any.
2731 RecordData Inits;
2732 for (Decl *D : Context->getModuleInitializers(Mod))
2733 Inits.push_back(GetDeclRef(D));
2734 if (!Inits.empty())
2735 Stream.EmitRecord(SUBMODULE_INITIALIZERS, Inits);
2736
2737 // Emit the name of the re-exported module, if any.
2738 if (!Mod->ExportAsModule.empty()) {
2739 RecordData::value_type Record[] = {SUBMODULE_EXPORT_AS};
2740 Stream.EmitRecordWithBlob(ExportAsAbbrev, Record, Mod->ExportAsModule);
2741 }
2742
2743 // Queue up the submodules of this module.
2744 for (auto *M : Mod->submodules())
2745 Q.push(M);
2746 }
2747
2748 Stream.ExitBlock();
2749
2750 assert((NextSubmoduleID - FirstSubmoduleID ==(((NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule
)) && "Wrong # of submodules; found a reference to a non-local, "
"non-imported submodule?") ? static_cast<void> (0) : __assert_fail
("(NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule)) && \"Wrong # of submodules; found a reference to a non-local, \" \"non-imported submodule?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 2753, __PRETTY_FUNCTION__))
2751 getNumberOfModules(WritingModule)) &&(((NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule
)) && "Wrong # of submodules; found a reference to a non-local, "
"non-imported submodule?") ? static_cast<void> (0) : __assert_fail
("(NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule)) && \"Wrong # of submodules; found a reference to a non-local, \" \"non-imported submodule?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 2753, __PRETTY_FUNCTION__))
2752 "Wrong # of submodules; found a reference to a non-local, "(((NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule
)) && "Wrong # of submodules; found a reference to a non-local, "
"non-imported submodule?") ? static_cast<void> (0) : __assert_fail
("(NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule)) && \"Wrong # of submodules; found a reference to a non-local, \" \"non-imported submodule?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 2753, __PRETTY_FUNCTION__))
2753 "non-imported submodule?")(((NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule
)) && "Wrong # of submodules; found a reference to a non-local, "
"non-imported submodule?") ? static_cast<void> (0) : __assert_fail
("(NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule)) && \"Wrong # of submodules; found a reference to a non-local, \" \"non-imported submodule?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 2753, __PRETTY_FUNCTION__))
;
2754}
2755
2756void ASTWriter::WritePragmaDiagnosticMappings(const DiagnosticsEngine &Diag,
2757 bool isModule) {
2758 llvm::SmallDenseMap<const DiagnosticsEngine::DiagState *, unsigned, 64>
2759 DiagStateIDMap;
2760 unsigned CurrID = 0;
2761 RecordData Record;
2762
2763 auto EncodeDiagStateFlags =
2764 [](const DiagnosticsEngine::DiagState *DS) -> unsigned {
2765 unsigned Result = (unsigned)DS->ExtBehavior;
2766 for (unsigned Val :
2767 {(unsigned)DS->IgnoreAllWarnings, (unsigned)DS->EnableAllWarnings,
2768 (unsigned)DS->WarningsAsErrors, (unsigned)DS->ErrorsAsFatal,
2769 (unsigned)DS->SuppressSystemWarnings})
2770 Result = (Result << 1) | Val;
2771 return Result;
2772 };
2773
2774 unsigned Flags = EncodeDiagStateFlags(Diag.DiagStatesByLoc.FirstDiagState);
2775 Record.push_back(Flags);
2776
2777 auto AddDiagState = [&](const DiagnosticsEngine::DiagState *State,
2778 bool IncludeNonPragmaStates) {
2779 // Ensure that the diagnostic state wasn't modified since it was created.
2780 // We will not correctly round-trip this information otherwise.
2781 assert(Flags == EncodeDiagStateFlags(State) &&((Flags == EncodeDiagStateFlags(State) && "diag state flags vary in single AST file"
) ? static_cast<void> (0) : __assert_fail ("Flags == EncodeDiagStateFlags(State) && \"diag state flags vary in single AST file\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 2782, __PRETTY_FUNCTION__))
2782 "diag state flags vary in single AST file")((Flags == EncodeDiagStateFlags(State) && "diag state flags vary in single AST file"
) ? static_cast<void> (0) : __assert_fail ("Flags == EncodeDiagStateFlags(State) && \"diag state flags vary in single AST file\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 2782, __PRETTY_FUNCTION__))
;
2783
2784 unsigned &DiagStateID = DiagStateIDMap[State];
2785 Record.push_back(DiagStateID);
2786
2787 if (DiagStateID == 0) {
2788 DiagStateID = ++CurrID;
2789
2790 // Add a placeholder for the number of mappings.
2791 auto SizeIdx = Record.size();
2792 Record.emplace_back();
2793 for (const auto &I : *State) {
2794 if (I.second.isPragma() || IncludeNonPragmaStates) {
2795 Record.push_back(I.first);
2796 Record.push_back(I.second.serialize());
2797 }
2798 }
2799 // Update the placeholder.
2800 Record[SizeIdx] = (Record.size() - SizeIdx) / 2;
2801 }
2802 };
2803
2804 AddDiagState(Diag.DiagStatesByLoc.FirstDiagState, isModule);
2805
2806 // Reserve a spot for the number of locations with state transitions.
2807 auto NumLocationsIdx = Record.size();
2808 Record.emplace_back();
2809
2810 // Emit the state transitions.
2811 unsigned NumLocations = 0;
2812 for (auto &FileIDAndFile : Diag.DiagStatesByLoc.Files) {
2813 if (!FileIDAndFile.first.isValid() ||
2814 !FileIDAndFile.second.HasLocalTransitions)
2815 continue;
2816 ++NumLocations;
2817
2818 SourceLocation Loc = Diag.SourceMgr->getComposedLoc(FileIDAndFile.first, 0);
2819 assert(!Loc.isInvalid() && "start loc for valid FileID is invalid")((!Loc.isInvalid() && "start loc for valid FileID is invalid"
) ? static_cast<void> (0) : __assert_fail ("!Loc.isInvalid() && \"start loc for valid FileID is invalid\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 2819, __PRETTY_FUNCTION__))
;
2820 AddSourceLocation(Loc, Record);
2821
2822 Record.push_back(FileIDAndFile.second.StateTransitions.size());
2823 for (auto &StatePoint : FileIDAndFile.second.StateTransitions) {
2824 Record.push_back(StatePoint.Offset);
2825 AddDiagState(StatePoint.State, false);
2826 }
2827 }
2828
2829 // Backpatch the number of locations.
2830 Record[NumLocationsIdx] = NumLocations;
2831
2832 // Emit CurDiagStateLoc. Do it last in order to match source order.
2833 //
2834 // This also protects against a hypothetical corner case with simulating
2835 // -Werror settings for implicit modules in the ASTReader, where reading
2836 // CurDiagState out of context could change whether warning pragmas are
2837 // treated as errors.
2838 AddSourceLocation(Diag.DiagStatesByLoc.CurDiagStateLoc, Record);
2839 AddDiagState(Diag.DiagStatesByLoc.CurDiagState, false);
2840
2841 Stream.EmitRecord(DIAG_PRAGMA_MAPPINGS, Record);
2842}
2843
2844//===----------------------------------------------------------------------===//
2845// Type Serialization
2846//===----------------------------------------------------------------------===//
2847
2848/// Write the representation of a type to the AST stream.
2849void ASTWriter::WriteType(QualType T) {
2850 TypeIdx &IdxRef = TypeIdxs[T];
2851 if (IdxRef.getIndex() == 0) // we haven't seen this type before.
2852 IdxRef = TypeIdx(NextTypeID++);
2853 TypeIdx Idx = IdxRef;
2854
2855 assert(Idx.getIndex() >= FirstTypeID && "Re-writing a type from a prior AST")((Idx.getIndex() >= FirstTypeID && "Re-writing a type from a prior AST"
) ? static_cast<void> (0) : __assert_fail ("Idx.getIndex() >= FirstTypeID && \"Re-writing a type from a prior AST\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 2855, __PRETTY_FUNCTION__))
;
2856
2857 // Emit the type's representation.
2858 uint64_t Offset = ASTTypeWriter(*this).write(T) - DeclTypesBlockStartOffset;
2859
2860 // Record the offset for this type.
2861 unsigned Index = Idx.getIndex() - FirstTypeID;
2862 if (TypeOffsets.size() == Index)
2863 TypeOffsets.emplace_back(Offset);
2864 else if (TypeOffsets.size() < Index) {
2865 TypeOffsets.resize(Index + 1);
2866 TypeOffsets[Index].setBitOffset(Offset);
2867 } else {
2868 llvm_unreachable("Types emitted in wrong order")::llvm::llvm_unreachable_internal("Types emitted in wrong order"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 2868)
;
2869 }
2870}
2871
2872//===----------------------------------------------------------------------===//
2873// Declaration Serialization
2874//===----------------------------------------------------------------------===//
2875
2876/// Write the block containing all of the declaration IDs
2877/// lexically declared within the given DeclContext.
2878///
2879/// \returns the offset of the DECL_CONTEXT_LEXICAL block within the
2880/// bitstream, or 0 if no block was written.
2881uint64_t ASTWriter::WriteDeclContextLexicalBlock(ASTContext &Context,
2882 DeclContext *DC) {
2883 if (DC->decls_empty())
2884 return 0;
2885
2886 uint64_t Offset = Stream.GetCurrentBitNo();
2887 SmallVector<uint32_t, 128> KindDeclPairs;
2888 for (const auto *D : DC->decls()) {
2889 KindDeclPairs.push_back(D->getKind());
2890 KindDeclPairs.push_back(GetDeclRef(D));
2891 }
2892
2893 ++NumLexicalDeclContexts;
2894 RecordData::value_type Record[] = {DECL_CONTEXT_LEXICAL};
2895 Stream.EmitRecordWithBlob(DeclContextLexicalAbbrev, Record,
2896 bytes(KindDeclPairs));
2897 return Offset;
2898}
2899
2900void ASTWriter::WriteTypeDeclOffsets() {
2901 using namespace llvm;
2902
2903 // Write the type offsets array
2904 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2905 Abbrev->Add(BitCodeAbbrevOp(TYPE_OFFSET));
2906 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of types
2907 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base type index
2908 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // types block
2909 unsigned TypeOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2910 {
2911 RecordData::value_type Record[] = {TYPE_OFFSET, TypeOffsets.size(),
2912 FirstTypeID - NUM_PREDEF_TYPE_IDS};
2913 Stream.EmitRecordWithBlob(TypeOffsetAbbrev, Record, bytes(TypeOffsets));
2914 }
2915
2916 // Write the declaration offsets array
2917 Abbrev = std::make_shared<BitCodeAbbrev>();
2918 Abbrev->Add(BitCodeAbbrevOp(DECL_OFFSET));
2919 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of declarations
2920 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base decl ID
2921 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // declarations block
2922 unsigned DeclOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2923 {
2924 RecordData::value_type Record[] = {DECL_OFFSET, DeclOffsets.size(),
2925 FirstDeclID - NUM_PREDEF_DECL_IDS};
2926 Stream.EmitRecordWithBlob(DeclOffsetAbbrev, Record, bytes(DeclOffsets));
2927 }
2928}
2929
2930void ASTWriter::WriteFileDeclIDsMap() {
2931 using namespace llvm;
2932
2933 SmallVector<std::pair<FileID, DeclIDInFileInfo *>, 64> SortedFileDeclIDs;
2934 SortedFileDeclIDs.reserve(FileDeclIDs.size());
2935 for (const auto &P : FileDeclIDs)
2936 SortedFileDeclIDs.push_back(std::make_pair(P.first, P.second.get()));
2937 llvm::sort(SortedFileDeclIDs, llvm::less_first());
2938
2939 // Join the vectors of DeclIDs from all files.
2940 SmallVector<DeclID, 256> FileGroupedDeclIDs;
2941 for (auto &FileDeclEntry : SortedFileDeclIDs) {
2942 DeclIDInFileInfo &Info = *FileDeclEntry.second;
2943 Info.FirstDeclIndex = FileGroupedDeclIDs.size();
2944 for (auto &LocDeclEntry : Info.DeclIDs)
2945 FileGroupedDeclIDs.push_back(LocDeclEntry.second);
2946 }
2947
2948 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2949 Abbrev->Add(BitCodeAbbrevOp(FILE_SORTED_DECLS));
2950 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2951 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2952 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
2953 RecordData::value_type Record[] = {FILE_SORTED_DECLS,
2954 FileGroupedDeclIDs.size()};
2955 Stream.EmitRecordWithBlob(AbbrevCode, Record, bytes(FileGroupedDeclIDs));
2956}
2957
2958void ASTWriter::WriteComments() {
2959 Stream.EnterSubblock(COMMENTS_BLOCK_ID, 3);
2960 auto _ = llvm::make_scope_exit([this] { Stream.ExitBlock(); });
2961 if (!PP->getPreprocessorOpts().WriteCommentListToPCH)
2962 return;
2963 RecordData Record;
2964 for (const auto &FO : Context->Comments.OrderedComments) {
2965 for (const auto &OC : FO.second) {
2966 const RawComment *I = OC.second;
2967 Record.clear();
2968 AddSourceRange(I->getSourceRange(), Record);
2969 Record.push_back(I->getKind());
2970 Record.push_back(I->isTrailingComment());
2971 Record.push_back(I->isAlmostTrailingComment());
2972 Stream.EmitRecord(COMMENTS_RAW_COMMENT, Record);
2973 }
2974 }
2975}
2976
2977//===----------------------------------------------------------------------===//
2978// Global Method Pool and Selector Serialization
2979//===----------------------------------------------------------------------===//
2980
2981namespace {
2982
2983// Trait used for the on-disk hash table used in the method pool.
2984class ASTMethodPoolTrait {
2985 ASTWriter &Writer;
2986
2987public:
2988 using key_type = Selector;
2989 using key_type_ref = key_type;
2990
2991 struct data_type {
2992 SelectorID ID;
2993 ObjCMethodList Instance, Factory;
2994 };
2995 using data_type_ref = const data_type &;
2996
2997 using hash_value_type = unsigned;
2998 using offset_type = unsigned;
2999
3000 explicit ASTMethodPoolTrait(ASTWriter &Writer) : Writer(Writer) {}
3001
3002 static hash_value_type ComputeHash(Selector Sel) {
3003 return serialization::ComputeHash(Sel);
3004 }
3005
3006 std::pair<unsigned, unsigned>
3007 EmitKeyDataLength(raw_ostream& Out, Selector Sel,
3008 data_type_ref Methods) {
3009 using namespace llvm::support;
3010
3011 endian::Writer LE(Out, little);
3012 unsigned KeyLen = 2 + (Sel.getNumArgs()? Sel.getNumArgs() * 4 : 4);
3013 LE.write<uint16_t>(KeyLen);
3014 unsigned DataLen = 4 + 2 + 2; // 2 bytes for each of the method counts
3015 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3016 Method = Method->getNext())
3017 if (Method->getMethod())
3018 DataLen += 4;
3019 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3020 Method = Method->getNext())
3021 if (Method->getMethod())
3022 DataLen += 4;
3023 LE.write<uint16_t>(DataLen);
3024 return std::make_pair(KeyLen, DataLen);
3025 }
3026
3027 void EmitKey(raw_ostream& Out, Selector Sel, unsigned) {
3028 using namespace llvm::support;
3029
3030 endian::Writer LE(Out, little);
3031 uint64_t Start = Out.tell();
3032 assert((Start >> 32) == 0 && "Selector key offset too large")(((Start >> 32) == 0 && "Selector key offset too large"
) ? static_cast<void> (0) : __assert_fail ("(Start >> 32) == 0 && \"Selector key offset too large\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3032, __PRETTY_FUNCTION__))
;
3033 Writer.SetSelectorOffset(Sel, Start);
3034 unsigned N = Sel.getNumArgs();
3035 LE.write<uint16_t>(N);
3036 if (N == 0)
3037 N = 1;
3038 for (unsigned I = 0; I != N; ++I)
3039 LE.write<uint32_t>(
3040 Writer.getIdentifierRef(Sel.getIdentifierInfoForSlot(I)));
3041 }
3042
3043 void EmitData(raw_ostream& Out, key_type_ref,
3044 data_type_ref Methods, unsigned DataLen) {
3045 using namespace llvm::support;
3046
3047 endian::Writer LE(Out, little);
3048 uint64_t Start = Out.tell(); (void)Start;
3049 LE.write<uint32_t>(Methods.ID);
3050 unsigned NumInstanceMethods = 0;
3051 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3052 Method = Method->getNext())
3053 if (Method->getMethod())
3054 ++NumInstanceMethods;
3055
3056 unsigned NumFactoryMethods = 0;
3057 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3058 Method = Method->getNext())
3059 if (Method->getMethod())
3060 ++NumFactoryMethods;
3061
3062 unsigned InstanceBits = Methods.Instance.getBits();
3063 assert(InstanceBits < 4)((InstanceBits < 4) ? static_cast<void> (0) : __assert_fail
("InstanceBits < 4", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3063, __PRETTY_FUNCTION__))
;
3064 unsigned InstanceHasMoreThanOneDeclBit =
3065 Methods.Instance.hasMoreThanOneDecl();
3066 unsigned FullInstanceBits = (NumInstanceMethods << 3) |
3067 (InstanceHasMoreThanOneDeclBit << 2) |
3068 InstanceBits;
3069 unsigned FactoryBits = Methods.Factory.getBits();
3070 assert(FactoryBits < 4)((FactoryBits < 4) ? static_cast<void> (0) : __assert_fail
("FactoryBits < 4", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3070, __PRETTY_FUNCTION__))
;
3071 unsigned FactoryHasMoreThanOneDeclBit =
3072 Methods.Factory.hasMoreThanOneDecl();
3073 unsigned FullFactoryBits = (NumFactoryMethods << 3) |
3074 (FactoryHasMoreThanOneDeclBit << 2) |
3075 FactoryBits;
3076 LE.write<uint16_t>(FullInstanceBits);
3077 LE.write<uint16_t>(FullFactoryBits);
3078 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3079 Method = Method->getNext())
3080 if (Method->getMethod())
3081 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3082 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3083 Method = Method->getNext())
3084 if (Method->getMethod())
3085 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3086
3087 assert(Out.tell() - Start == DataLen && "Data length is wrong")((Out.tell() - Start == DataLen && "Data length is wrong"
) ? static_cast<void> (0) : __assert_fail ("Out.tell() - Start == DataLen && \"Data length is wrong\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3087, __PRETTY_FUNCTION__))
;
3088 }
3089};
3090
3091} // namespace
3092
3093/// Write ObjC data: selectors and the method pool.
3094///
3095/// The method pool contains both instance and factory methods, stored
3096/// in an on-disk hash table indexed by the selector. The hash table also
3097/// contains an empty entry for every other selector known to Sema.
3098void ASTWriter::WriteSelectors(Sema &SemaRef) {
3099 using namespace llvm;
3100
3101 // Do we have to do anything at all?
3102 if (SemaRef.MethodPool.empty() && SelectorIDs.empty())
3103 return;
3104 unsigned NumTableEntries = 0;
3105 // Create and write out the blob that contains selectors and the method pool.
3106 {
3107 llvm::OnDiskChainedHashTableGenerator<ASTMethodPoolTrait> Generator;
3108 ASTMethodPoolTrait Trait(*this);
3109
3110 // Create the on-disk hash table representation. We walk through every
3111 // selector we've seen and look it up in the method pool.
3112 SelectorOffsets.resize(NextSelectorID - FirstSelectorID);
3113 for (auto &SelectorAndID : SelectorIDs) {
3114 Selector S = SelectorAndID.first;
3115 SelectorID ID = SelectorAndID.second;
3116 Sema::GlobalMethodPool::iterator F = SemaRef.MethodPool.find(S);
3117 ASTMethodPoolTrait::data_type Data = {
3118 ID,
3119 ObjCMethodList(),
3120 ObjCMethodList()
3121 };
3122 if (F != SemaRef.MethodPool.end()) {
3123 Data.Instance = F->second.first;
3124 Data.Factory = F->second.second;
3125 }
3126 // Only write this selector if it's not in an existing AST or something
3127 // changed.
3128 if (Chain && ID < FirstSelectorID) {
3129 // Selector already exists. Did it change?
3130 bool changed = false;
3131 for (ObjCMethodList *M = &Data.Instance;
3132 !changed && M && M->getMethod(); M = M->getNext()) {
3133 if (!M->getMethod()->isFromASTFile())
3134 changed = true;
3135 }
3136 for (ObjCMethodList *M = &Data.Factory; !changed && M && M->getMethod();
3137 M = M->getNext()) {
3138 if (!M->getMethod()->isFromASTFile())
3139 changed = true;
3140 }
3141 if (!changed)
3142 continue;
3143 } else if (Data.Instance.getMethod() || Data.Factory.getMethod()) {
3144 // A new method pool entry.
3145 ++NumTableEntries;
3146 }
3147 Generator.insert(S, Data, Trait);
3148 }
3149
3150 // Create the on-disk hash table in a buffer.
3151 SmallString<4096> MethodPool;
3152 uint32_t BucketOffset;
3153 {
3154 using namespace llvm::support;
3155
3156 ASTMethodPoolTrait Trait(*this);
3157 llvm::raw_svector_ostream Out(MethodPool);
3158 // Make sure that no bucket is at offset 0
3159 endian::write<uint32_t>(Out, 0, little);
3160 BucketOffset = Generator.Emit(Out, Trait);
3161 }
3162
3163 // Create a blob abbreviation
3164 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3165 Abbrev->Add(BitCodeAbbrevOp(METHOD_POOL));
3166 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3167 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3168 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3169 unsigned MethodPoolAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3170
3171 // Write the method pool
3172 {
3173 RecordData::value_type Record[] = {METHOD_POOL, BucketOffset,
3174 NumTableEntries};
3175 Stream.EmitRecordWithBlob(MethodPoolAbbrev, Record, MethodPool);
3176 }
3177
3178 // Create a blob abbreviation for the selector table offsets.
3179 Abbrev = std::make_shared<BitCodeAbbrev>();
3180 Abbrev->Add(BitCodeAbbrevOp(SELECTOR_OFFSETS));
3181 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size
3182 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3183 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3184 unsigned SelectorOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3185
3186 // Write the selector offsets table.
3187 {
3188 RecordData::value_type Record[] = {
3189 SELECTOR_OFFSETS, SelectorOffsets.size(),
3190 FirstSelectorID - NUM_PREDEF_SELECTOR_IDS};
3191 Stream.EmitRecordWithBlob(SelectorOffsetAbbrev, Record,
3192 bytes(SelectorOffsets));
3193 }
3194 }
3195}
3196
3197/// Write the selectors referenced in @selector expression into AST file.
3198void ASTWriter::WriteReferencedSelectorsPool(Sema &SemaRef) {
3199 using namespace llvm;
3200
3201 if (SemaRef.ReferencedSelectors.empty())
3202 return;
3203
3204 RecordData Record;
3205 ASTRecordWriter Writer(*this, Record);
3206
3207 // Note: this writes out all references even for a dependent AST. But it is
3208 // very tricky to fix, and given that @selector shouldn't really appear in
3209 // headers, probably not worth it. It's not a correctness issue.
3210 for (auto &SelectorAndLocation : SemaRef.ReferencedSelectors) {
3211 Selector Sel = SelectorAndLocation.first;
3212 SourceLocation Loc = SelectorAndLocation.second;
3213 Writer.AddSelectorRef(Sel);
3214 Writer.AddSourceLocation(Loc);
3215 }
3216 Writer.Emit(REFERENCED_SELECTOR_POOL);
3217}
3218
3219//===----------------------------------------------------------------------===//
3220// Identifier Table Serialization
3221//===----------------------------------------------------------------------===//
3222
3223/// Determine the declaration that should be put into the name lookup table to
3224/// represent the given declaration in this module. This is usually D itself,
3225/// but if D was imported and merged into a local declaration, we want the most
3226/// recent local declaration instead. The chosen declaration will be the most
3227/// recent declaration in any module that imports this one.
3228static NamedDecl *getDeclForLocalLookup(const LangOptions &LangOpts,
3229 NamedDecl *D) {
3230 if (!LangOpts.Modules || !D->isFromASTFile())
3231 return D;
3232
3233 if (Decl *Redecl = D->getPreviousDecl()) {
3234 // For Redeclarable decls, a prior declaration might be local.
3235 for (; Redecl; Redecl = Redecl->getPreviousDecl()) {
3236 // If we find a local decl, we're done.
3237 if (!Redecl->isFromASTFile()) {
3238 // Exception: in very rare cases (for injected-class-names), not all
3239 // redeclarations are in the same semantic context. Skip ones in a
3240 // different context. They don't go in this lookup table at all.
3241 if (!Redecl->getDeclContext()->getRedeclContext()->Equals(
3242 D->getDeclContext()->getRedeclContext()))
3243 continue;
3244 return cast<NamedDecl>(Redecl);
3245 }
3246
3247 // If we find a decl from a (chained-)PCH stop since we won't find a
3248 // local one.
3249 if (Redecl->getOwningModuleID() == 0)
3250 break;
3251 }
3252 } else if (Decl *First = D->getCanonicalDecl()) {
3253 // For Mergeable decls, the first decl might be local.
3254 if (!First->isFromASTFile())
3255 return cast<NamedDecl>(First);
3256 }
3257
3258 // All declarations are imported. Our most recent declaration will also be
3259 // the most recent one in anyone who imports us.
3260 return D;
3261}
3262
3263namespace {
3264
3265class ASTIdentifierTableTrait {
3266 ASTWriter &Writer;
3267 Preprocessor &PP;
3268 IdentifierResolver &IdResolver;
3269 bool IsModule;
3270 bool NeedDecls;
3271 ASTWriter::RecordData *InterestingIdentifierOffsets;
3272
3273 /// Determines whether this is an "interesting" identifier that needs a
3274 /// full IdentifierInfo structure written into the hash table. Notably, this
3275 /// doesn't check whether the name has macros defined; use PublicMacroIterator
3276 /// to check that.
3277 bool isInterestingIdentifier(const IdentifierInfo *II, uint64_t MacroOffset) {
3278 if (MacroOffset ||
3279 II->isPoisoned() ||
3280 (IsModule ? II->hasRevertedBuiltin() : II->getObjCOrBuiltinID()) ||
3281 II->hasRevertedTokenIDToIdentifier() ||
3282 (NeedDecls && II->getFETokenInfo()))
3283 return true;
3284
3285 return false;
3286 }
3287
3288public:
3289 using key_type = IdentifierInfo *;
3290 using key_type_ref = key_type;
3291
3292 using data_type = IdentID;
3293 using data_type_ref = data_type;
3294
3295 using hash_value_type = unsigned;
3296 using offset_type = unsigned;
3297
3298 ASTIdentifierTableTrait(ASTWriter &Writer, Preprocessor &PP,
3299 IdentifierResolver &IdResolver, bool IsModule,
3300 ASTWriter::RecordData *InterestingIdentifierOffsets)
3301 : Writer(Writer), PP(PP), IdResolver(IdResolver), IsModule(IsModule),
3302 NeedDecls(!IsModule || !Writer.getLangOpts().CPlusPlus),
3303 InterestingIdentifierOffsets(InterestingIdentifierOffsets) {}
3304
3305 bool needDecls() const { return NeedDecls; }
3306
3307 static hash_value_type ComputeHash(const IdentifierInfo* II) {
3308 return llvm::djbHash(II->getName());
3309 }
3310
3311 bool isInterestingIdentifier(const IdentifierInfo *II) {
3312 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3313 return isInterestingIdentifier(II, MacroOffset);
3314 }
3315
3316 bool isInterestingNonMacroIdentifier(const IdentifierInfo *II) {
3317 return isInterestingIdentifier(II, 0);
3318 }
3319
3320 std::pair<unsigned, unsigned>
3321 EmitKeyDataLength(raw_ostream& Out, IdentifierInfo* II, IdentID ID) {
3322 unsigned KeyLen = II->getLength() + 1;
3323 unsigned DataLen = 4; // 4 bytes for the persistent ID << 1
3324 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3325 if (isInterestingIdentifier(II, MacroOffset)) {
3326 DataLen += 2; // 2 bytes for builtin ID
3327 DataLen += 2; // 2 bytes for flags
3328 if (MacroOffset)
3329 DataLen += 4; // MacroDirectives offset.
3330
3331 if (NeedDecls) {
3332 for (IdentifierResolver::iterator D = IdResolver.begin(II),
3333 DEnd = IdResolver.end();
3334 D != DEnd; ++D)
3335 DataLen += 4;
3336 }
3337 }
3338
3339 using namespace llvm::support;
3340
3341 endian::Writer LE(Out, little);
3342
3343 assert((uint16_t)DataLen == DataLen && (uint16_t)KeyLen == KeyLen)(((uint16_t)DataLen == DataLen && (uint16_t)KeyLen ==
KeyLen) ? static_cast<void> (0) : __assert_fail ("(uint16_t)DataLen == DataLen && (uint16_t)KeyLen == KeyLen"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3343, __PRETTY_FUNCTION__))
;
3344 LE.write<uint16_t>(DataLen);
3345 // We emit the key length after the data length so that every
3346 // string is preceded by a 16-bit length. This matches the PTH
3347 // format for storing identifiers.
3348 LE.write<uint16_t>(KeyLen);
3349 return std::make_pair(KeyLen, DataLen);
3350 }
3351
3352 void EmitKey(raw_ostream& Out, const IdentifierInfo* II,
3353 unsigned KeyLen) {
3354 // Record the location of the key data. This is used when generating
3355 // the mapping from persistent IDs to strings.
3356 Writer.SetIdentifierOffset(II, Out.tell());
3357
3358 // Emit the offset of the key/data length information to the interesting
3359 // identifiers table if necessary.
3360 if (InterestingIdentifierOffsets && isInterestingIdentifier(II))
3361 InterestingIdentifierOffsets->push_back(Out.tell() - 4);
3362
3363 Out.write(II->getNameStart(), KeyLen);
3364 }
3365
3366 void EmitData(raw_ostream& Out, IdentifierInfo* II,
3367 IdentID ID, unsigned) {
3368 using namespace llvm::support;
3369
3370 endian::Writer LE(Out, little);
3371
3372 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3373 if (!isInterestingIdentifier(II, MacroOffset)) {
3374 LE.write<uint32_t>(ID << 1);
3375 return;
3376 }
3377
3378 LE.write<uint32_t>((ID << 1) | 0x01);
3379 uint32_t Bits = (uint32_t)II->getObjCOrBuiltinID();
3380 assert((Bits & 0xffff) == Bits && "ObjCOrBuiltinID too big for ASTReader.")(((Bits & 0xffff) == Bits && "ObjCOrBuiltinID too big for ASTReader."
) ? static_cast<void> (0) : __assert_fail ("(Bits & 0xffff) == Bits && \"ObjCOrBuiltinID too big for ASTReader.\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3380, __PRETTY_FUNCTION__))
;
3381 LE.write<uint16_t>(Bits);
3382 Bits = 0;
3383 bool HadMacroDefinition = MacroOffset != 0;
3384 Bits = (Bits << 1) | unsigned(HadMacroDefinition);
3385 Bits = (Bits << 1) | unsigned(II->isExtensionToken());
3386 Bits = (Bits << 1) | unsigned(II->isPoisoned());
3387 Bits = (Bits << 1) | unsigned(II->hasRevertedBuiltin());
3388 Bits = (Bits << 1) | unsigned(II->hasRevertedTokenIDToIdentifier());
3389 Bits = (Bits << 1) | unsigned(II->isCPlusPlusOperatorKeyword());
3390 LE.write<uint16_t>(Bits);
3391
3392 if (HadMacroDefinition)
3393 LE.write<uint32_t>(MacroOffset);
3394
3395 if (NeedDecls) {
3396 // Emit the declaration IDs in reverse order, because the
3397 // IdentifierResolver provides the declarations as they would be
3398 // visible (e.g., the function "stat" would come before the struct
3399 // "stat"), but the ASTReader adds declarations to the end of the list
3400 // (so we need to see the struct "stat" before the function "stat").
3401 // Only emit declarations that aren't from a chained PCH, though.
3402 SmallVector<NamedDecl *, 16> Decls(IdResolver.begin(II),
3403 IdResolver.end());
3404 for (SmallVectorImpl<NamedDecl *>::reverse_iterator D = Decls.rbegin(),
3405 DEnd = Decls.rend();
3406 D != DEnd; ++D)
3407 LE.write<uint32_t>(
3408 Writer.getDeclID(getDeclForLocalLookup(PP.getLangOpts(), *D)));
3409 }
3410 }
3411};
3412
3413} // namespace
3414
3415/// Write the identifier table into the AST file.
3416///
3417/// The identifier table consists of a blob containing string data
3418/// (the actual identifiers themselves) and a separate "offsets" index
3419/// that maps identifier IDs to locations within the blob.
3420void ASTWriter::WriteIdentifierTable(Preprocessor &PP,
3421 IdentifierResolver &IdResolver,
3422 bool IsModule) {
3423 using namespace llvm;
3424
3425 RecordData InterestingIdents;
3426
3427 // Create and write out the blob that contains the identifier
3428 // strings.
3429 {
3430 llvm::OnDiskChainedHashTableGenerator<ASTIdentifierTableTrait> Generator;
3431 ASTIdentifierTableTrait Trait(
3432 *this, PP, IdResolver, IsModule,
3433 (getLangOpts().CPlusPlus && IsModule) ? &InterestingIdents : nullptr);
3434
3435 // Look for any identifiers that were named while processing the
3436 // headers, but are otherwise not needed. We add these to the hash
3437 // table to enable checking of the predefines buffer in the case
3438 // where the user adds new macro definitions when building the AST
3439 // file.
3440 SmallVector<const IdentifierInfo *, 128> IIs;
3441 for (const auto &ID : PP.getIdentifierTable())
3442 IIs.push_back(ID.second);
3443 // Sort the identifiers lexicographically before getting them references so
3444 // that their order is stable.
3445 llvm::sort(IIs, llvm::deref<std::less<>>());
3446 for (const IdentifierInfo *II : IIs)
3447 if (Trait.isInterestingNonMacroIdentifier(II))
3448 getIdentifierRef(II);
3449
3450 // Create the on-disk hash table representation. We only store offsets
3451 // for identifiers that appear here for the first time.
3452 IdentifierOffsets.resize(NextIdentID - FirstIdentID);
3453 for (auto IdentIDPair : IdentifierIDs) {
3454 auto *II = const_cast<IdentifierInfo *>(IdentIDPair.first);
3455 IdentID ID = IdentIDPair.second;
3456 assert(II && "NULL identifier in identifier table")((II && "NULL identifier in identifier table") ? static_cast
<void> (0) : __assert_fail ("II && \"NULL identifier in identifier table\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3456, __PRETTY_FUNCTION__))
;
3457 // Write out identifiers if either the ID is local or the identifier has
3458 // changed since it was loaded.
3459 if (ID >= FirstIdentID || !Chain || !II->isFromAST()
3460 || II->hasChangedSinceDeserialization() ||
3461 (Trait.needDecls() &&
3462 II->hasFETokenInfoChangedSinceDeserialization()))
3463 Generator.insert(II, ID, Trait);
3464 }
3465
3466 // Create the on-disk hash table in a buffer.
3467 SmallString<4096> IdentifierTable;
3468 uint32_t BucketOffset;
3469 {
3470 using namespace llvm::support;
3471
3472 llvm::raw_svector_ostream Out(IdentifierTable);
3473 // Make sure that no bucket is at offset 0
3474 endian::write<uint32_t>(Out, 0, little);
3475 BucketOffset = Generator.Emit(Out, Trait);
3476 }
3477
3478 // Create a blob abbreviation
3479 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3480 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_TABLE));
3481 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3482 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3483 unsigned IDTableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3484
3485 // Write the identifier table
3486 RecordData::value_type Record[] = {IDENTIFIER_TABLE, BucketOffset};
3487 Stream.EmitRecordWithBlob(IDTableAbbrev, Record, IdentifierTable);
3488 }
3489
3490 // Write the offsets table for identifier IDs.
3491 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3492 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_OFFSET));
3493 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of identifiers
3494 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3495 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3496 unsigned IdentifierOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3497
3498#ifndef NDEBUG
3499 for (unsigned I = 0, N = IdentifierOffsets.size(); I != N; ++I)
3500 assert(IdentifierOffsets[I] && "Missing identifier offset?")((IdentifierOffsets[I] && "Missing identifier offset?"
) ? static_cast<void> (0) : __assert_fail ("IdentifierOffsets[I] && \"Missing identifier offset?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3500, __PRETTY_FUNCTION__))
;
3501#endif
3502
3503 RecordData::value_type Record[] = {IDENTIFIER_OFFSET,
3504 IdentifierOffsets.size(),
3505 FirstIdentID - NUM_PREDEF_IDENT_IDS};
3506 Stream.EmitRecordWithBlob(IdentifierOffsetAbbrev, Record,
3507 bytes(IdentifierOffsets));
3508
3509 // In C++, write the list of interesting identifiers (those that are
3510 // defined as macros, poisoned, or similar unusual things).
3511 if (!InterestingIdents.empty())
3512 Stream.EmitRecord(INTERESTING_IDENTIFIERS, InterestingIdents);
3513}
3514
3515//===----------------------------------------------------------------------===//
3516// DeclContext's Name Lookup Table Serialization
3517//===----------------------------------------------------------------------===//
3518
3519namespace {
3520
3521// Trait used for the on-disk hash table used in the method pool.
3522class ASTDeclContextNameLookupTrait {
3523 ASTWriter &Writer;
3524 llvm::SmallVector<DeclID, 64> DeclIDs;
3525
3526public:
3527 using key_type = DeclarationNameKey;
3528 using key_type_ref = key_type;
3529
3530 /// A start and end index into DeclIDs, representing a sequence of decls.
3531 using data_type = std::pair<unsigned, unsigned>;
3532 using data_type_ref = const data_type &;
3533
3534 using hash_value_type = unsigned;
3535 using offset_type = unsigned;
3536
3537 explicit ASTDeclContextNameLookupTrait(ASTWriter &Writer) : Writer(Writer) {}
3538
3539 template<typename Coll>
3540 data_type getData(const Coll &Decls) {
3541 unsigned Start = DeclIDs.size();
3542 for (NamedDecl *D : Decls) {
3543 DeclIDs.push_back(
3544 Writer.GetDeclRef(getDeclForLocalLookup(Writer.getLangOpts(), D)));
3545 }
3546 return std::make_pair(Start, DeclIDs.size());
3547 }
3548
3549 data_type ImportData(const reader::ASTDeclContextNameLookupTrait::data_type &FromReader) {
3550 unsigned Start = DeclIDs.size();
3551 for (auto ID : FromReader)
3552 DeclIDs.push_back(ID);
3553 return std::make_pair(Start, DeclIDs.size());
3554 }
3555
3556 static bool EqualKey(key_type_ref a, key_type_ref b) {
3557 return a == b;
3558 }
3559
3560 hash_value_type ComputeHash(DeclarationNameKey Name) {
3561 return Name.getHash();
3562 }
3563
3564 void EmitFileRef(raw_ostream &Out, ModuleFile *F) const {
3565 assert(Writer.hasChain() &&((Writer.hasChain() && "have reference to loaded module file but no chain?"
) ? static_cast<void> (0) : __assert_fail ("Writer.hasChain() && \"have reference to loaded module file but no chain?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3566, __PRETTY_FUNCTION__))
3566 "have reference to loaded module file but no chain?")((Writer.hasChain() && "have reference to loaded module file but no chain?"
) ? static_cast<void> (0) : __assert_fail ("Writer.hasChain() && \"have reference to loaded module file but no chain?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3566, __PRETTY_FUNCTION__))
;
3567
3568 using namespace llvm::support;
3569
3570 endian::write<uint32_t>(Out, Writer.getChain()->getModuleFileID(F), little);
3571 }
3572
3573 std::pair<unsigned, unsigned> EmitKeyDataLength(raw_ostream &Out,
3574 DeclarationNameKey Name,
3575 data_type_ref Lookup) {
3576 using namespace llvm::support;
3577
3578 endian::Writer LE(Out, little);
3579 unsigned KeyLen = 1;
3580 switch (Name.getKind()) {
3581 case DeclarationName::Identifier:
3582 case DeclarationName::ObjCZeroArgSelector:
3583 case DeclarationName::ObjCOneArgSelector:
3584 case DeclarationName::ObjCMultiArgSelector:
3585 case DeclarationName::CXXLiteralOperatorName:
3586 case DeclarationName::CXXDeductionGuideName:
3587 KeyLen += 4;
3588 break;
3589 case DeclarationName::CXXOperatorName:
3590 KeyLen += 1;
3591 break;
3592 case DeclarationName::CXXConstructorName:
3593 case DeclarationName::CXXDestructorName:
3594 case DeclarationName::CXXConversionFunctionName:
3595 case DeclarationName::CXXUsingDirective:
3596 break;
3597 }
3598 LE.write<uint16_t>(KeyLen);
3599
3600 // 4 bytes for each DeclID.
3601 unsigned DataLen = 4 * (Lookup.second - Lookup.first);
3602 assert(uint16_t(DataLen) == DataLen &&((uint16_t(DataLen) == DataLen && "too many decls for serialized lookup result"
) ? static_cast<void> (0) : __assert_fail ("uint16_t(DataLen) == DataLen && \"too many decls for serialized lookup result\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3603, __PRETTY_FUNCTION__))
3603 "too many decls for serialized lookup result")((uint16_t(DataLen) == DataLen && "too many decls for serialized lookup result"
) ? static_cast<void> (0) : __assert_fail ("uint16_t(DataLen) == DataLen && \"too many decls for serialized lookup result\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3603, __PRETTY_FUNCTION__))
;
3604 LE.write<uint16_t>(DataLen);
3605
3606 return std::make_pair(KeyLen, DataLen);
3607 }
3608
3609 void EmitKey(raw_ostream &Out, DeclarationNameKey Name, unsigned) {
3610 using namespace llvm::support;
3611
3612 endian::Writer LE(Out, little);
3613 LE.write<uint8_t>(Name.getKind());
3614 switch (Name.getKind()) {
3615 case DeclarationName::Identifier:
3616 case DeclarationName::CXXLiteralOperatorName:
3617 case DeclarationName::CXXDeductionGuideName:
3618 LE.write<uint32_t>(Writer.getIdentifierRef(Name.getIdentifier()));
3619 return;
3620 case DeclarationName::ObjCZeroArgSelector:
3621 case DeclarationName::ObjCOneArgSelector:
3622 case DeclarationName::ObjCMultiArgSelector:
3623 LE.write<uint32_t>(Writer.getSelectorRef(Name.getSelector()));
3624 return;
3625 case DeclarationName::CXXOperatorName:
3626 assert(Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS &&((Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS &&
"Invalid operator?") ? static_cast<void> (0) : __assert_fail
("Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS && \"Invalid operator?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3627, __PRETTY_FUNCTION__))
3627 "Invalid operator?")((Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS &&
"Invalid operator?") ? static_cast<void> (0) : __assert_fail
("Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS && \"Invalid operator?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3627, __PRETTY_FUNCTION__))
;
3628 LE.write<uint8_t>(Name.getOperatorKind());
3629 return;
3630 case DeclarationName::CXXConstructorName:
3631 case DeclarationName::CXXDestructorName:
3632 case DeclarationName::CXXConversionFunctionName:
3633 case DeclarationName::CXXUsingDirective:
3634 return;
3635 }
3636
3637 llvm_unreachable("Invalid name kind?")::llvm::llvm_unreachable_internal("Invalid name kind?", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3637)
;
3638 }
3639
3640 void EmitData(raw_ostream &Out, key_type_ref, data_type Lookup,
3641 unsigned DataLen) {
3642 using namespace llvm::support;
3643
3644 endian::Writer LE(Out, little);
3645 uint64_t Start = Out.tell(); (void)Start;
3646 for (unsigned I = Lookup.first, N = Lookup.second; I != N; ++I)
3647 LE.write<uint32_t>(DeclIDs[I]);
3648 assert(Out.tell() - Start == DataLen && "Data length is wrong")((Out.tell() - Start == DataLen && "Data length is wrong"
) ? static_cast<void> (0) : __assert_fail ("Out.tell() - Start == DataLen && \"Data length is wrong\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3648, __PRETTY_FUNCTION__))
;
3649 }
3650};
3651
3652} // namespace
3653
3654bool ASTWriter::isLookupResultExternal(StoredDeclsList &Result,
3655 DeclContext *DC) {
3656 return Result.hasExternalDecls() &&
3657 DC->hasNeedToReconcileExternalVisibleStorage();
3658}
3659
3660bool ASTWriter::isLookupResultEntirelyExternal(StoredDeclsList &Result,
3661 DeclContext *DC) {
3662 for (auto *D : Result.getLookupResult())
3663 if (!getDeclForLocalLookup(getLangOpts(), D)->isFromASTFile())
3664 return false;
3665
3666 return true;
3667}
3668
3669void
3670ASTWriter::GenerateNameLookupTable(const DeclContext *ConstDC,
3671 llvm::SmallVectorImpl<char> &LookupTable) {
3672 assert(!ConstDC->hasLazyLocalLexicalLookups() &&((!ConstDC->hasLazyLocalLexicalLookups() && !ConstDC
->hasLazyExternalLexicalLookups() && "must call buildLookups first"
) ? static_cast<void> (0) : __assert_fail ("!ConstDC->hasLazyLocalLexicalLookups() && !ConstDC->hasLazyExternalLexicalLookups() && \"must call buildLookups first\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3674, __PRETTY_FUNCTION__))
3673 !ConstDC->hasLazyExternalLexicalLookups() &&((!ConstDC->hasLazyLocalLexicalLookups() && !ConstDC
->hasLazyExternalLexicalLookups() && "must call buildLookups first"
) ? static_cast<void> (0) : __assert_fail ("!ConstDC->hasLazyLocalLexicalLookups() && !ConstDC->hasLazyExternalLexicalLookups() && \"must call buildLookups first\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3674, __PRETTY_FUNCTION__))
3674 "must call buildLookups first")((!ConstDC->hasLazyLocalLexicalLookups() && !ConstDC
->hasLazyExternalLexicalLookups() && "must call buildLookups first"
) ? static_cast<void> (0) : __assert_fail ("!ConstDC->hasLazyLocalLexicalLookups() && !ConstDC->hasLazyExternalLexicalLookups() && \"must call buildLookups first\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3674, __PRETTY_FUNCTION__))
;
3675
3676 // FIXME: We need to build the lookups table, which is logically const.
3677 auto *DC = const_cast<DeclContext*>(ConstDC);
3678 assert(DC == DC->getPrimaryContext() && "only primary DC has lookup table")((DC == DC->getPrimaryContext() && "only primary DC has lookup table"
) ? static_cast<void> (0) : __assert_fail ("DC == DC->getPrimaryContext() && \"only primary DC has lookup table\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3678, __PRETTY_FUNCTION__))
;
3679
3680 // Create the on-disk hash table representation.
3681 MultiOnDiskHashTableGenerator<reader::ASTDeclContextNameLookupTrait,
3682 ASTDeclContextNameLookupTrait> Generator;
3683 ASTDeclContextNameLookupTrait Trait(*this);
3684
3685 // The first step is to collect the declaration names which we need to
3686 // serialize into the name lookup table, and to collect them in a stable
3687 // order.
3688 SmallVector<DeclarationName, 16> Names;
3689
3690 // We also build up small sets of the constructor and conversion function
3691 // names which are visible.
3692 llvm::SmallPtrSet<DeclarationName, 8> ConstructorNameSet, ConversionNameSet;
3693
3694 for (auto &Lookup : *DC->buildLookup()) {
3695 auto &Name = Lookup.first;
3696 auto &Result = Lookup.second;
3697
3698 // If there are no local declarations in our lookup result, we
3699 // don't need to write an entry for the name at all. If we can't
3700 // write out a lookup set without performing more deserialization,
3701 // just skip this entry.
3702 if (isLookupResultExternal(Result, DC) &&
3703 isLookupResultEntirelyExternal(Result, DC))
3704 continue;
3705
3706 // We also skip empty results. If any of the results could be external and
3707 // the currently available results are empty, then all of the results are
3708 // external and we skip it above. So the only way we get here with an empty
3709 // results is when no results could have been external *and* we have
3710 // external results.
3711 //
3712 // FIXME: While we might want to start emitting on-disk entries for negative
3713 // lookups into a decl context as an optimization, today we *have* to skip
3714 // them because there are names with empty lookup results in decl contexts
3715 // which we can't emit in any stable ordering: we lookup constructors and
3716 // conversion functions in the enclosing namespace scope creating empty
3717 // results for them. This in almost certainly a bug in Clang's name lookup,
3718 // but that is likely to be hard or impossible to fix and so we tolerate it
3719 // here by omitting lookups with empty results.
3720 if (Lookup.second.getLookupResult().empty())
3721 continue;
3722
3723 switch (Lookup.first.getNameKind()) {
3724 default:
3725 Names.push_back(Lookup.first);
3726 break;
3727
3728 case DeclarationName::CXXConstructorName:
3729 assert(isa<CXXRecordDecl>(DC) &&((isa<CXXRecordDecl>(DC) && "Cannot have a constructor name outside of a class!"
) ? static_cast<void> (0) : __assert_fail ("isa<CXXRecordDecl>(DC) && \"Cannot have a constructor name outside of a class!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3730, __PRETTY_FUNCTION__))
3730 "Cannot have a constructor name outside of a class!")((isa<CXXRecordDecl>(DC) && "Cannot have a constructor name outside of a class!"
) ? static_cast<void> (0) : __assert_fail ("isa<CXXRecordDecl>(DC) && \"Cannot have a constructor name outside of a class!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3730, __PRETTY_FUNCTION__))
;
3731 ConstructorNameSet.insert(Name);
3732 break;
3733
3734 case DeclarationName::CXXConversionFunctionName:
3735 assert(isa<CXXRecordDecl>(DC) &&((isa<CXXRecordDecl>(DC) && "Cannot have a conversion function name outside of a class!"
) ? static_cast<void> (0) : __assert_fail ("isa<CXXRecordDecl>(DC) && \"Cannot have a conversion function name outside of a class!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3736, __PRETTY_FUNCTION__))
3736 "Cannot have a conversion function name outside of a class!")((isa<CXXRecordDecl>(DC) && "Cannot have a conversion function name outside of a class!"
) ? static_cast<void> (0) : __assert_fail ("isa<CXXRecordDecl>(DC) && \"Cannot have a conversion function name outside of a class!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3736, __PRETTY_FUNCTION__))
;
3737 ConversionNameSet.insert(Name);
3738 break;
3739 }
3740 }
3741
3742 // Sort the names into a stable order.
3743 llvm::sort(Names);
3744
3745 if (auto *D = dyn_cast<CXXRecordDecl>(DC)) {
3746 // We need to establish an ordering of constructor and conversion function
3747 // names, and they don't have an intrinsic ordering.
3748
3749 // First we try the easy case by forming the current context's constructor
3750 // name and adding that name first. This is a very useful optimization to
3751 // avoid walking the lexical declarations in many cases, and it also
3752 // handles the only case where a constructor name can come from some other
3753 // lexical context -- when that name is an implicit constructor merged from
3754 // another declaration in the redecl chain. Any non-implicit constructor or
3755 // conversion function which doesn't occur in all the lexical contexts
3756 // would be an ODR violation.
3757 auto ImplicitCtorName = Context->DeclarationNames.getCXXConstructorName(
3758 Context->getCanonicalType(Context->getRecordType(D)));
3759 if (ConstructorNameSet.erase(ImplicitCtorName))
3760 Names.push_back(ImplicitCtorName);
3761
3762 // If we still have constructors or conversion functions, we walk all the
3763 // names in the decl and add the constructors and conversion functions
3764 // which are visible in the order they lexically occur within the context.
3765 if (!ConstructorNameSet.empty() || !ConversionNameSet.empty())
3766 for (Decl *ChildD : cast<CXXRecordDecl>(DC)->decls())
3767 if (auto *ChildND = dyn_cast<NamedDecl>(ChildD)) {
3768 auto Name = ChildND->getDeclName();
3769 switch (Name.getNameKind()) {
3770 default:
3771 continue;
3772
3773 case DeclarationName::CXXConstructorName:
3774 if (ConstructorNameSet.erase(Name))
3775 Names.push_back(Name);
3776 break;
3777
3778 case DeclarationName::CXXConversionFunctionName:
3779 if (ConversionNameSet.erase(Name))
3780 Names.push_back(Name);
3781 break;
3782 }
3783
3784 if (ConstructorNameSet.empty() && ConversionNameSet.empty())
3785 break;
3786 }
3787
3788 assert(ConstructorNameSet.empty() && "Failed to find all of the visible "((ConstructorNameSet.empty() && "Failed to find all of the visible "
"constructors by walking all the " "lexical members of the context."
) ? static_cast<void> (0) : __assert_fail ("ConstructorNameSet.empty() && \"Failed to find all of the visible \" \"constructors by walking all the \" \"lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3790, __PRETTY_FUNCTION__))
3789 "constructors by walking all the "((ConstructorNameSet.empty() && "Failed to find all of the visible "
"constructors by walking all the " "lexical members of the context."
) ? static_cast<void> (0) : __assert_fail ("ConstructorNameSet.empty() && \"Failed to find all of the visible \" \"constructors by walking all the \" \"lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3790, __PRETTY_FUNCTION__))
3790 "lexical members of the context.")((ConstructorNameSet.empty() && "Failed to find all of the visible "
"constructors by walking all the " "lexical members of the context."
) ? static_cast<void> (0) : __assert_fail ("ConstructorNameSet.empty() && \"Failed to find all of the visible \" \"constructors by walking all the \" \"lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3790, __PRETTY_FUNCTION__))
;
3791 assert(ConversionNameSet.empty() && "Failed to find all of the visible "((ConversionNameSet.empty() && "Failed to find all of the visible "
"conversion functions by walking all " "the lexical members of the context."
) ? static_cast<void> (0) : __assert_fail ("ConversionNameSet.empty() && \"Failed to find all of the visible \" \"conversion functions by walking all \" \"the lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3793, __PRETTY_FUNCTION__))
3792 "conversion functions by walking all "((ConversionNameSet.empty() && "Failed to find all of the visible "
"conversion functions by walking all " "the lexical members of the context."
) ? static_cast<void> (0) : __assert_fail ("ConversionNameSet.empty() && \"Failed to find all of the visible \" \"conversion functions by walking all \" \"the lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3793, __PRETTY_FUNCTION__))
3793 "the lexical members of the context.")((ConversionNameSet.empty() && "Failed to find all of the visible "
"conversion functions by walking all " "the lexical members of the context."
) ? static_cast<void> (0) : __assert_fail ("ConversionNameSet.empty() && \"Failed to find all of the visible \" \"conversion functions by walking all \" \"the lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3793, __PRETTY_FUNCTION__))
;
3794 }
3795
3796 // Next we need to do a lookup with each name into this decl context to fully
3797 // populate any results from external sources. We don't actually use the
3798 // results of these lookups because we only want to use the results after all
3799 // results have been loaded and the pointers into them will be stable.
3800 for (auto &Name : Names)
3801 DC->lookup(Name);
3802
3803 // Now we need to insert the results for each name into the hash table. For
3804 // constructor names and conversion function names, we actually need to merge
3805 // all of the results for them into one list of results each and insert
3806 // those.
3807 SmallVector<NamedDecl *, 8> ConstructorDecls;
3808 SmallVector<NamedDecl *, 8> ConversionDecls;
3809
3810 // Now loop over the names, either inserting them or appending for the two
3811 // special cases.
3812 for (auto &Name : Names) {
3813 DeclContext::lookup_result Result = DC->noload_lookup(Name);
3814
3815 switch (Name.getNameKind()) {
3816 default:
3817 Generator.insert(Name, Trait.getData(Result), Trait);
3818 break;
3819
3820 case DeclarationName::CXXConstructorName:
3821 ConstructorDecls.append(Result.begin(), Result.end());
3822 break;
3823
3824 case DeclarationName::CXXConversionFunctionName:
3825 ConversionDecls.append(Result.begin(), Result.end());
3826 break;
3827 }
3828 }
3829
3830 // Handle our two special cases if we ended up having any. We arbitrarily use
3831 // the first declaration's name here because the name itself isn't part of
3832 // the key, only the kind of name is used.
3833 if (!ConstructorDecls.empty())
3834 Generator.insert(ConstructorDecls.front()->getDeclName(),
3835 Trait.getData(ConstructorDecls), Trait);
3836 if (!ConversionDecls.empty())
3837 Generator.insert(ConversionDecls.front()->getDeclName(),
3838 Trait.getData(ConversionDecls), Trait);
3839
3840 // Create the on-disk hash table. Also emit the existing imported and
3841 // merged table if there is one.
3842 auto *Lookups = Chain ? Chain->getLoadedLookupTables(DC) : nullptr;
3843 Generator.emit(LookupTable, Trait, Lookups ? &Lookups->Table : nullptr);
3844}
3845
3846/// Write the block containing all of the declaration IDs
3847/// visible from the given DeclContext.
3848///
3849/// \returns the offset of the DECL_CONTEXT_VISIBLE block within the
3850/// bitstream, or 0 if no block was written.
3851uint64_t ASTWriter::WriteDeclContextVisibleBlock(ASTContext &Context,
3852 DeclContext *DC) {
3853 // If we imported a key declaration of this namespace, write the visible
3854 // lookup results as an update record for it rather than including them
3855 // on this declaration. We will only look at key declarations on reload.
3856 if (isa<NamespaceDecl>(DC) && Chain &&
3857 Chain->getKeyDeclaration(cast<Decl>(DC))->isFromASTFile()) {
3858 // Only do this once, for the first local declaration of the namespace.
3859 for (auto *Prev = cast<NamespaceDecl>(DC)->getPreviousDecl(); Prev;
3860 Prev = Prev->getPreviousDecl())
3861 if (!Prev->isFromASTFile())
3862 return 0;
3863
3864 // Note that we need to emit an update record for the primary context.
3865 UpdatedDeclContexts.insert(DC->getPrimaryContext());
3866
3867 // Make sure all visible decls are written. They will be recorded later. We
3868 // do this using a side data structure so we can sort the names into
3869 // a deterministic order.
3870 StoredDeclsMap *Map = DC->getPrimaryContext()->buildLookup();
3871 SmallVector<std::pair<DeclarationName, DeclContext::lookup_result>, 16>
3872 LookupResults;
3873 if (Map) {
3874 LookupResults.reserve(Map->size());
3875 for (auto &Entry : *Map)
3876 LookupResults.push_back(
3877 std::make_pair(Entry.first, Entry.second.getLookupResult()));
3878 }
3879
3880 llvm::sort(LookupResults, llvm::less_first());
3881 for (auto &NameAndResult : LookupResults) {
3882 DeclarationName Name = NameAndResult.first;
3883 DeclContext::lookup_result Result = NameAndResult.second;
3884 if (Name.getNameKind() == DeclarationName::CXXConstructorName ||
3885 Name.getNameKind() == DeclarationName::CXXConversionFunctionName) {
3886 // We have to work around a name lookup bug here where negative lookup
3887 // results for these names get cached in namespace lookup tables (these
3888 // names should never be looked up in a namespace).
3889 assert(Result.empty() && "Cannot have a constructor or conversion "((Result.empty() && "Cannot have a constructor or conversion "
"function name in a namespace!") ? static_cast<void> (
0) : __assert_fail ("Result.empty() && \"Cannot have a constructor or conversion \" \"function name in a namespace!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3890, __PRETTY_FUNCTION__))
3890 "function name in a namespace!")((Result.empty() && "Cannot have a constructor or conversion "
"function name in a namespace!") ? static_cast<void> (
0) : __assert_fail ("Result.empty() && \"Cannot have a constructor or conversion \" \"function name in a namespace!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 3890, __PRETTY_FUNCTION__))
;
3891 continue;
3892 }
3893
3894 for (NamedDecl *ND : Result)
3895 if (!ND->isFromASTFile())
3896 GetDeclRef(ND);
3897 }
3898
3899 return 0;
3900 }
3901
3902 if (DC->getPrimaryContext() != DC)
3903 return 0;
3904
3905 // Skip contexts which don't support name lookup.
3906 if (!DC->isLookupContext())
3907 return 0;
3908
3909 // If not in C++, we perform name lookup for the translation unit via the
3910 // IdentifierInfo chains, don't bother to build a visible-declarations table.
3911 if (DC->isTranslationUnit() && !Context.getLangOpts().CPlusPlus)
3912 return 0;
3913
3914 // Serialize the contents of the mapping used for lookup. Note that,
3915 // although we have two very different code paths, the serialized
3916 // representation is the same for both cases: a declaration name,
3917 // followed by a size, followed by references to the visible
3918 // declarations that have that name.
3919 uint64_t Offset = Stream.GetCurrentBitNo();
3920 StoredDeclsMap *Map = DC->buildLookup();
3921 if (!Map || Map->empty())
3922 return 0;
3923
3924 // Create the on-disk hash table in a buffer.
3925 SmallString<4096> LookupTable;
3926 GenerateNameLookupTable(DC, LookupTable);
3927
3928 // Write the lookup table
3929 RecordData::value_type Record[] = {DECL_CONTEXT_VISIBLE};
3930 Stream.EmitRecordWithBlob(DeclContextVisibleLookupAbbrev, Record,
3931 LookupTable);
3932 ++NumVisibleDeclContexts;
3933 return Offset;
3934}
3935
3936/// Write an UPDATE_VISIBLE block for the given context.
3937///
3938/// UPDATE_VISIBLE blocks contain the declarations that are added to an existing
3939/// DeclContext in a dependent AST file. As such, they only exist for the TU
3940/// (in C++), for namespaces, and for classes with forward-declared unscoped
3941/// enumeration members (in C++11).
3942void ASTWriter::WriteDeclContextVisibleUpdate(const DeclContext *DC) {
3943 StoredDeclsMap *Map = DC->getLookupPtr();
3944 if (!Map || Map->empty())
3945 return;
3946
3947 // Create the on-disk hash table in a buffer.
3948 SmallString<4096> LookupTable;
3949 GenerateNameLookupTable(DC, LookupTable);
3950
3951 // If we're updating a namespace, select a key declaration as the key for the
3952 // update record; those are the only ones that will be checked on reload.
3953 if (isa<NamespaceDecl>(DC))
3954 DC = cast<DeclContext>(Chain->getKeyDeclaration(cast<Decl>(DC)));
3955
3956 // Write the lookup table
3957 RecordData::value_type Record[] = {UPDATE_VISIBLE, getDeclID(cast<Decl>(DC))};
3958 Stream.EmitRecordWithBlob(UpdateVisibleAbbrev, Record, LookupTable);
3959}
3960
3961/// Write an FP_PRAGMA_OPTIONS block for the given FPOptions.
3962void ASTWriter::WriteFPPragmaOptions(const FPOptionsOverride &Opts) {
3963 RecordData::value_type Record[] = {Opts.getAsOpaqueInt()};
3964 Stream.EmitRecord(FP_PRAGMA_OPTIONS, Record);
3965}
3966
3967/// Write an OPENCL_EXTENSIONS block for the given OpenCLOptions.
3968void ASTWriter::WriteOpenCLExtensions(Sema &SemaRef) {
3969 if (!SemaRef.Context.getLangOpts().OpenCL)
3970 return;
3971
3972 const OpenCLOptions &Opts = SemaRef.getOpenCLOptions();
3973 RecordData Record;
3974 for (const auto &I:Opts.OptMap) {
3975 AddString(I.getKey(), Record);
3976 auto V = I.getValue();
3977 Record.push_back(V.Supported ? 1 : 0);
3978 Record.push_back(V.Enabled ? 1 : 0);
3979 Record.push_back(V.Avail);
3980 Record.push_back(V.Core);
3981 }
3982 Stream.EmitRecord(OPENCL_EXTENSIONS, Record);
3983}
3984
3985void ASTWriter::WriteOpenCLExtensionTypes(Sema &SemaRef) {
3986 if (!SemaRef.Context.getLangOpts().OpenCL)
3987 return;
3988
3989 // Sort the elements of the map OpenCLTypeExtMap by TypeIDs,
3990 // without copying them.
3991 const llvm::DenseMap<const Type *, std::set<std::string>> &OpenCLTypeExtMap =
3992 SemaRef.OpenCLTypeExtMap;
3993 using ElementTy = std::pair<TypeID, const std::set<std::string> *>;
3994 llvm::SmallVector<ElementTy, 8> StableOpenCLTypeExtMap;
3995 StableOpenCLTypeExtMap.reserve(OpenCLTypeExtMap.size());
3996
3997 for (const auto &I : OpenCLTypeExtMap)
3998 StableOpenCLTypeExtMap.emplace_back(
3999 getTypeID(I.first->getCanonicalTypeInternal()), &I.second);
4000
4001 auto CompareByTypeID = [](const ElementTy &E1, const ElementTy &E2) -> bool {
4002 return E1.first < E2.first;
4003 };
4004 llvm::sort(StableOpenCLTypeExtMap, CompareByTypeID);
4005
4006 RecordData Record;
4007 for (const ElementTy &E : StableOpenCLTypeExtMap) {
4008 Record.push_back(E.first); // TypeID
4009 const std::set<std::string> *ExtSet = E.second;
4010 Record.push_back(static_cast<unsigned>(ExtSet->size()));
4011 for (const std::string &Ext : *ExtSet)
4012 AddString(Ext, Record);
4013 }
4014
4015 Stream.EmitRecord(OPENCL_EXTENSION_TYPES, Record);
4016}
4017
4018void ASTWriter::WriteOpenCLExtensionDecls(Sema &SemaRef) {
4019 if (!SemaRef.Context.getLangOpts().OpenCL)
4020 return;
4021
4022 // Sort the elements of the map OpenCLDeclExtMap by DeclIDs,
4023 // without copying them.
4024 const llvm::DenseMap<const Decl *, std::set<std::string>> &OpenCLDeclExtMap =
4025 SemaRef.OpenCLDeclExtMap;
4026 using ElementTy = std::pair<DeclID, const std::set<std::string> *>;
4027 llvm::SmallVector<ElementTy, 8> StableOpenCLDeclExtMap;
4028 StableOpenCLDeclExtMap.reserve(OpenCLDeclExtMap.size());
4029
4030 for (const auto &I : OpenCLDeclExtMap)
4031 StableOpenCLDeclExtMap.emplace_back(getDeclID(I.first), &I.second);
4032
4033 auto CompareByDeclID = [](const ElementTy &E1, const ElementTy &E2) -> bool {
4034 return E1.first < E2.first;
4035 };
4036 llvm::sort(StableOpenCLDeclExtMap, CompareByDeclID);
4037
4038 RecordData Record;
4039 for (const ElementTy &E : StableOpenCLDeclExtMap) {
4040 Record.push_back(E.first); // DeclID
4041 const std::set<std::string> *ExtSet = E.second;
4042 Record.push_back(static_cast<unsigned>(ExtSet->size()));
4043 for (const std::string &Ext : *ExtSet)
4044 AddString(Ext, Record);
4045 }
4046
4047 Stream.EmitRecord(OPENCL_EXTENSION_DECLS, Record);
4048}
4049
4050void ASTWriter::WriteCUDAPragmas(Sema &SemaRef) {
4051 if (SemaRef.ForceCUDAHostDeviceDepth > 0) {
4052 RecordData::value_type Record[] = {SemaRef.ForceCUDAHostDeviceDepth};
4053 Stream.EmitRecord(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH, Record);
4054 }
4055}
4056
4057void ASTWriter::WriteObjCCategories() {
4058 SmallVector<ObjCCategoriesInfo, 2> CategoriesMap;
4059 RecordData Categories;
4060
4061 for (unsigned I = 0, N = ObjCClassesWithCategories.size(); I != N; ++I) {
4062 unsigned Size = 0;
4063 unsigned StartIndex = Categories.size();
4064
4065 ObjCInterfaceDecl *Class = ObjCClassesWithCategories[I];
4066
4067 // Allocate space for the size.
4068 Categories.push_back(0);
4069
4070 // Add the categories.
4071 for (ObjCInterfaceDecl::known_categories_iterator
4072 Cat = Class->known_categories_begin(),
4073 CatEnd = Class->known_categories_end();
4074 Cat != CatEnd; ++Cat, ++Size) {
4075 assert(getDeclID(*Cat) != 0 && "Bogus category")((getDeclID(*Cat) != 0 && "Bogus category") ? static_cast
<void> (0) : __assert_fail ("getDeclID(*Cat) != 0 && \"Bogus category\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 4075, __PRETTY_FUNCTION__))
;
4076 AddDeclRef(*Cat, Categories);
4077 }
4078
4079 // Update the size.
4080 Categories[StartIndex] = Size;
4081
4082 // Record this interface -> category map.
4083 ObjCCategoriesInfo CatInfo = { getDeclID(Class), StartIndex };
4084 CategoriesMap.push_back(CatInfo);
4085 }
4086
4087 // Sort the categories map by the definition ID, since the reader will be
4088 // performing binary searches on this information.
4089 llvm::array_pod_sort(CategoriesMap.begin(), CategoriesMap.end());
4090
4091 // Emit the categories map.
4092 using namespace llvm;
4093
4094 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4095 Abbrev->Add(BitCodeAbbrevOp(OBJC_CATEGORIES_MAP));
4096 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # of entries
4097 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4098 unsigned AbbrevID = Stream.EmitAbbrev(std::move(Abbrev));
4099
4100 RecordData::value_type Record[] = {OBJC_CATEGORIES_MAP, CategoriesMap.size()};
4101 Stream.EmitRecordWithBlob(AbbrevID, Record,
4102 reinterpret_cast<char *>(CategoriesMap.data()),
4103 CategoriesMap.size() * sizeof(ObjCCategoriesInfo));
4104
4105 // Emit the category lists.
4106 Stream.EmitRecord(OBJC_CATEGORIES, Categories);
4107}
4108
4109void ASTWriter::WriteLateParsedTemplates(Sema &SemaRef) {
4110 Sema::LateParsedTemplateMapT &LPTMap = SemaRef.LateParsedTemplateMap;
4111
4112 if (LPTMap.empty())
4113 return;
4114
4115 RecordData Record;
4116 for (auto &LPTMapEntry : LPTMap) {
4117 const FunctionDecl *FD = LPTMapEntry.first;
4118 LateParsedTemplate &LPT = *LPTMapEntry.second;
4119 AddDeclRef(FD, Record);
4120 AddDeclRef(LPT.D, Record);
4121 Record.push_back(LPT.Toks.size());
4122
4123 for (const auto &Tok : LPT.Toks) {
4124 AddToken(Tok, Record);
4125 }
4126 }
4127 Stream.EmitRecord(LATE_PARSED_TEMPLATE, Record);
4128}
4129
4130/// Write the state of 'pragma clang optimize' at the end of the module.
4131void ASTWriter::WriteOptimizePragmaOptions(Sema &SemaRef) {
4132 RecordData Record;
4133 SourceLocation PragmaLoc = SemaRef.getOptimizeOffPragmaLocation();
4134 AddSourceLocation(PragmaLoc, Record);
4135 Stream.EmitRecord(OPTIMIZE_PRAGMA_OPTIONS, Record);
4136}
4137
4138/// Write the state of 'pragma ms_struct' at the end of the module.
4139void ASTWriter::WriteMSStructPragmaOptions(Sema &SemaRef) {
4140 RecordData Record;
4141 Record.push_back(SemaRef.MSStructPragmaOn ? PMSST_ON : PMSST_OFF);
4142 Stream.EmitRecord(MSSTRUCT_PRAGMA_OPTIONS, Record);
4143}
4144
4145/// Write the state of 'pragma pointers_to_members' at the end of the
4146//module.
4147void ASTWriter::WriteMSPointersToMembersPragmaOptions(Sema &SemaRef) {
4148 RecordData Record;
4149 Record.push_back(SemaRef.MSPointerToMemberRepresentationMethod);
4150 AddSourceLocation(SemaRef.ImplicitMSInheritanceAttrLoc, Record);
4151 Stream.EmitRecord(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS, Record);
4152}
4153
4154/// Write the state of 'pragma pack' at the end of the module.
4155void ASTWriter::WritePackPragmaOptions(Sema &SemaRef) {
4156 // Don't serialize pragma pack state for modules, since it should only take
4157 // effect on a per-submodule basis.
4158 if (WritingModule)
4159 return;
4160
4161 RecordData Record;
4162 Record.push_back(SemaRef.PackStack.CurrentValue);
4163 AddSourceLocation(SemaRef.PackStack.CurrentPragmaLocation, Record);
4164 Record.push_back(SemaRef.PackStack.Stack.size());
4165 for (const auto &StackEntry : SemaRef.PackStack.Stack) {
4166 Record.push_back(StackEntry.Value);
4167 AddSourceLocation(StackEntry.PragmaLocation, Record);
4168 AddSourceLocation(StackEntry.PragmaPushLocation, Record);
4169 AddString(StackEntry.StackSlotLabel, Record);
4170 }
4171 Stream.EmitRecord(PACK_PRAGMA_OPTIONS, Record);
4172}
4173
4174/// Write the state of 'pragma float_control' at the end of the module.
4175void ASTWriter::WriteFloatControlPragmaOptions(Sema &SemaRef) {
4176 // Don't serialize pragma float_control state for modules,
4177 // since it should only take effect on a per-submodule basis.
4178 if (WritingModule)
4179 return;
4180
4181 RecordData Record;
4182 Record.push_back(SemaRef.FpPragmaStack.CurrentValue.getAsOpaqueInt());
4183 AddSourceLocation(SemaRef.FpPragmaStack.CurrentPragmaLocation, Record);
4184 Record.push_back(SemaRef.FpPragmaStack.Stack.size());
4185 for (const auto &StackEntry : SemaRef.FpPragmaStack.Stack) {
4186 Record.push_back(StackEntry.Value.getAsOpaqueInt());
4187 AddSourceLocation(StackEntry.PragmaLocation, Record);
4188 AddSourceLocation(StackEntry.PragmaPushLocation, Record);
4189 AddString(StackEntry.StackSlotLabel, Record);
4190 }
4191 Stream.EmitRecord(FLOAT_CONTROL_PRAGMA_OPTIONS, Record);
4192}
4193
4194void ASTWriter::WriteModuleFileExtension(Sema &SemaRef,
4195 ModuleFileExtensionWriter &Writer) {
4196 // Enter the extension block.
4197 Stream.EnterSubblock(EXTENSION_BLOCK_ID, 4);
4198
4199 // Emit the metadata record abbreviation.
4200 auto Abv = std::make_shared<llvm::BitCodeAbbrev>();
4201 Abv->Add(llvm::BitCodeAbbrevOp(EXTENSION_METADATA));
4202 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4203 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4204 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4205 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4206 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4207 unsigned Abbrev = Stream.EmitAbbrev(std::move(Abv));
4208
4209 // Emit the metadata record.
4210 RecordData Record;
4211 auto Metadata = Writer.getExtension()->getExtensionMetadata();
4212 Record.push_back(EXTENSION_METADATA);
4213 Record.push_back(Metadata.MajorVersion);
4214 Record.push_back(Metadata.MinorVersion);
4215 Record.push_back(Metadata.BlockName.size());
4216 Record.push_back(Metadata.UserInfo.size());
4217 SmallString<64> Buffer;
4218 Buffer += Metadata.BlockName;
4219 Buffer += Metadata.UserInfo;
4220 Stream.EmitRecordWithBlob(Abbrev, Record, Buffer);
4221
4222 // Emit the contents of the extension block.
4223 Writer.writeExtensionContents(SemaRef, Stream);
4224
4225 // Exit the extension block.
4226 Stream.ExitBlock();
4227}
4228
4229//===----------------------------------------------------------------------===//
4230// General Serialization Routines
4231//===----------------------------------------------------------------------===//
4232
4233void ASTRecordWriter::AddAttr(const Attr *A) {
4234 auto &Record = *this;
4235 if (!A)
4236 return Record.push_back(0);
4237 Record.push_back(A->getKind() + 1); // FIXME: stable encoding, target attrs
4238
4239 Record.AddIdentifierRef(A->getAttrName());
4240 Record.AddIdentifierRef(A->getScopeName());
4241 Record.AddSourceRange(A->getRange());
4242 Record.AddSourceLocation(A->getScopeLoc());
4243 Record.push_back(A->getParsedKind());
4244 Record.push_back(A->getSyntax());
4245 Record.push_back(A->getAttributeSpellingListIndexRaw());
4246
4247#include "clang/Serialization/AttrPCHWrite.inc"
4248}
4249
4250/// Emit the list of attributes to the specified record.
4251void ASTRecordWriter::AddAttributes(ArrayRef<const Attr *> Attrs) {
4252 push_back(Attrs.size());
4253 for (const auto *A : Attrs)
4254 AddAttr(A);
4255}
4256
4257void ASTWriter::AddToken(const Token &Tok, RecordDataImpl &Record) {
4258 AddSourceLocation(Tok.getLocation(), Record);
4259 Record.push_back(Tok.getLength());
4260
4261 // FIXME: When reading literal tokens, reconstruct the literal pointer
4262 // if it is needed.
4263 AddIdentifierRef(Tok.getIdentifierInfo(), Record);
4264 // FIXME: Should translate token kind to a stable encoding.
4265 Record.push_back(Tok.getKind());
4266 // FIXME: Should translate token flags to a stable encoding.
4267 Record.push_back(Tok.getFlags());
4268}
4269
4270void ASTWriter::AddString(StringRef Str, RecordDataImpl &Record) {
4271 Record.push_back(Str.size());
4272 Record.insert(Record.end(), Str.begin(), Str.end());
4273}
4274
4275bool ASTWriter::PreparePathForOutput(SmallVectorImpl<char> &Path) {
4276 assert(Context && "should have context when outputting path")((Context && "should have context when outputting path"
) ? static_cast<void> (0) : __assert_fail ("Context && \"should have context when outputting path\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 4276, __PRETTY_FUNCTION__))
;
4277
4278 bool Changed =
4279 cleanPathForOutput(Context->getSourceManager().getFileManager(), Path);
4280
4281 // Remove a prefix to make the path relative, if relevant.
4282 const char *PathBegin = Path.data();
4283 const char *PathPtr =
4284 adjustFilenameForRelocatableAST(PathBegin, BaseDirectory);
4285 if (PathPtr != PathBegin) {
4286 Path.erase(Path.begin(), Path.begin() + (PathPtr - PathBegin));
4287 Changed = true;
4288 }
4289
4290 return Changed;
4291}
4292
4293void ASTWriter::AddPath(StringRef Path, RecordDataImpl &Record) {
4294 SmallString<128> FilePath(Path);
4295 PreparePathForOutput(FilePath);
4296 AddString(FilePath, Record);
4297}
4298
4299void ASTWriter::EmitRecordWithPath(unsigned Abbrev, RecordDataRef Record,
4300 StringRef Path) {
4301 SmallString<128> FilePath(Path);
4302 PreparePathForOutput(FilePath);
4303 Stream.EmitRecordWithBlob(Abbrev, Record, FilePath);
4304}
4305
4306void ASTWriter::AddVersionTuple(const VersionTuple &Version,
4307 RecordDataImpl &Record) {
4308 Record.push_back(Version.getMajor());
4309 if (Optional<unsigned> Minor = Version.getMinor())
4310 Record.push_back(*Minor + 1);
4311 else
4312 Record.push_back(0);
4313 if (Optional<unsigned> Subminor = Version.getSubminor())
4314 Record.push_back(*Subminor + 1);
4315 else
4316 Record.push_back(0);
4317}
4318
4319/// Note that the identifier II occurs at the given offset
4320/// within the identifier table.
4321void ASTWriter::SetIdentifierOffset(const IdentifierInfo *II, uint32_t Offset) {
4322 IdentID ID = IdentifierIDs[II];
4323 // Only store offsets new to this AST file. Other identifier names are looked
4324 // up earlier in the chain and thus don't need an offset.
4325 if (ID >= FirstIdentID)
4326 IdentifierOffsets[ID - FirstIdentID] = Offset;
4327}
4328
4329/// Note that the selector Sel occurs at the given offset
4330/// within the method pool/selector table.
4331void ASTWriter::SetSelectorOffset(Selector Sel, uint32_t Offset) {
4332 unsigned ID = SelectorIDs[Sel];
4333 assert(ID && "Unknown selector")((ID && "Unknown selector") ? static_cast<void>
(0) : __assert_fail ("ID && \"Unknown selector\"", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 4333, __PRETTY_FUNCTION__))
;
4334 // Don't record offsets for selectors that are also available in a different
4335 // file.
4336 if (ID < FirstSelectorID)
4337 return;
4338 SelectorOffsets[ID - FirstSelectorID] = Offset;
4339}
4340
4341ASTWriter::ASTWriter(llvm::BitstreamWriter &Stream,
4342 SmallVectorImpl<char> &Buffer,
4343 InMemoryModuleCache &ModuleCache,
4344 ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions,
4345 bool IncludeTimestamps)
4346 : Stream(Stream), Buffer(Buffer), ModuleCache(ModuleCache),
4347 IncludeTimestamps(IncludeTimestamps) {
4348 for (const auto &Ext : Extensions) {
4349 if (auto Writer = Ext->createExtensionWriter(*this))
4350 ModuleFileExtensionWriters.push_back(std::move(Writer));
4351 }
4352}
4353
4354ASTWriter::~ASTWriter() = default;
4355
4356const LangOptions &ASTWriter::getLangOpts() const {
4357 assert(WritingAST && "can't determine lang opts when not writing AST")((WritingAST && "can't determine lang opts when not writing AST"
) ? static_cast<void> (0) : __assert_fail ("WritingAST && \"can't determine lang opts when not writing AST\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 4357, __PRETTY_FUNCTION__))
;
4358 return Context->getLangOpts();
4359}
4360
4361time_t ASTWriter::getTimestampForOutput(const FileEntry *E) const {
4362 return IncludeTimestamps ? E->getModificationTime() : 0;
4363}
4364
4365ASTFileSignature ASTWriter::WriteAST(Sema &SemaRef,
4366 const std::string &OutputFile,
4367 Module *WritingModule, StringRef isysroot,
4368 bool hasErrors,
4369 bool ShouldCacheASTInMemory) {
4370 WritingAST = true;
4371
4372 ASTHasCompilerErrors = hasErrors;
4373
4374 // Emit the file header.
4375 Stream.Emit((unsigned)'C', 8);
4376 Stream.Emit((unsigned)'P', 8);
4377 Stream.Emit((unsigned)'C', 8);
4378 Stream.Emit((unsigned)'H', 8);
4379
4380 WriteBlockInfoBlock();
4381
4382 Context = &SemaRef.Context;
4383 PP = &SemaRef.PP;
4384 this->WritingModule = WritingModule;
4385 ASTFileSignature Signature =
4386 WriteASTCore(SemaRef, isysroot, OutputFile, WritingModule);
4387 Context = nullptr;
4388 PP = nullptr;
4389 this->WritingModule = nullptr;
4390 this->BaseDirectory.clear();
4391
4392 WritingAST = false;
4393 if (ShouldCacheASTInMemory) {
4394 // Construct MemoryBuffer and update buffer manager.
4395 ModuleCache.addBuiltPCM(OutputFile,
4396 llvm::MemoryBuffer::getMemBufferCopy(
4397 StringRef(Buffer.begin(), Buffer.size())));
4398 }
4399 return Signature;
4400}
4401
4402template<typename Vector>
4403static void AddLazyVectorDecls(ASTWriter &Writer, Vector &Vec,
4404 ASTWriter::RecordData &Record) {
4405 for (typename Vector::iterator I = Vec.begin(nullptr, true), E = Vec.end();
4406 I != E; ++I) {
4407 Writer.AddDeclRef(*I, Record);
4408 }
4409}
4410
4411ASTFileSignature ASTWriter::WriteASTCore(Sema &SemaRef, StringRef isysroot,
4412 const std::string &OutputFile,
4413 Module *WritingModule) {
4414 using namespace llvm;
4415
4416 bool isModule = WritingModule != nullptr;
4417
4418 // Make sure that the AST reader knows to finalize itself.
4419 if (Chain)
4420 Chain->finalizeForWriting();
4421
4422 ASTContext &Context = SemaRef.Context;
4423 Preprocessor &PP = SemaRef.PP;
4424
4425 // Set up predefined declaration IDs.
4426 auto RegisterPredefDecl = [&] (Decl *D, PredefinedDeclIDs ID) {
4427 if (D) {
4428 assert(D->isCanonicalDecl() && "predefined decl is not canonical")((D->isCanonicalDecl() && "predefined decl is not canonical"
) ? static_cast<void> (0) : __assert_fail ("D->isCanonicalDecl() && \"predefined decl is not canonical\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 4428, __PRETTY_FUNCTION__))
;
4429 DeclIDs[D] = ID;
4430 }
4431 };
4432 RegisterPredefDecl(Context.getTranslationUnitDecl(),
4433 PREDEF_DECL_TRANSLATION_UNIT_ID);
4434 RegisterPredefDecl(Context.ObjCIdDecl, PREDEF_DECL_OBJC_ID_ID);
4435 RegisterPredefDecl(Context.ObjCSelDecl, PREDEF_DECL_OBJC_SEL_ID);
4436 RegisterPredefDecl(Context.ObjCClassDecl, PREDEF_DECL_OBJC_CLASS_ID);
4437 RegisterPredefDecl(Context.ObjCProtocolClassDecl,
4438 PREDEF_DECL_OBJC_PROTOCOL_ID);
4439 RegisterPredefDecl(Context.Int128Decl, PREDEF_DECL_INT_128_ID);
4440 RegisterPredefDecl(Context.UInt128Decl, PREDEF_DECL_UNSIGNED_INT_128_ID);
4441 RegisterPredefDecl(Context.ObjCInstanceTypeDecl,
4442 PREDEF_DECL_OBJC_INSTANCETYPE_ID);
4443 RegisterPredefDecl(Context.BuiltinVaListDecl, PREDEF_DECL_BUILTIN_VA_LIST_ID);
4444 RegisterPredefDecl(Context.VaListTagDecl, PREDEF_DECL_VA_LIST_TAG);
4445 RegisterPredefDecl(Context.BuiltinMSVaListDecl,
4446 PREDEF_DECL_BUILTIN_MS_VA_LIST_ID);
4447 RegisterPredefDecl(Context.MSGuidTagDecl,
4448 PREDEF_DECL_BUILTIN_MS_GUID_ID);
4449 RegisterPredefDecl(Context.ExternCContext, PREDEF_DECL_EXTERN_C_CONTEXT_ID);
4450 RegisterPredefDecl(Context.MakeIntegerSeqDecl,
4451 PREDEF_DECL_MAKE_INTEGER_SEQ_ID);
4452 RegisterPredefDecl(Context.CFConstantStringTypeDecl,
4453 PREDEF_DECL_CF_CONSTANT_STRING_ID);
4454 RegisterPredefDecl(Context.CFConstantStringTagDecl,
4455 PREDEF_DECL_CF_CONSTANT_STRING_TAG_ID);
4456 RegisterPredefDecl(Context.TypePackElementDecl,
4457 PREDEF_DECL_TYPE_PACK_ELEMENT_ID);
4458
4459 // Build a record containing all of the tentative definitions in this file, in
4460 // TentativeDefinitions order. Generally, this record will be empty for
4461 // headers.
4462 RecordData TentativeDefinitions;
4463 AddLazyVectorDecls(*this, SemaRef.TentativeDefinitions, TentativeDefinitions);
4464
4465 // Build a record containing all of the file scoped decls in this file.
4466 RecordData UnusedFileScopedDecls;
4467 if (!isModule)
4468 AddLazyVectorDecls(*this, SemaRef.UnusedFileScopedDecls,
4469 UnusedFileScopedDecls);
4470
4471 // Build a record containing all of the delegating constructors we still need
4472 // to resolve.
4473 RecordData DelegatingCtorDecls;
4474 if (!isModule)
4475 AddLazyVectorDecls(*this, SemaRef.DelegatingCtorDecls, DelegatingCtorDecls);
4476
4477 // Write the set of weak, undeclared identifiers. We always write the
4478 // entire table, since later PCH files in a PCH chain are only interested in
4479 // the results at the end of the chain.
4480 RecordData WeakUndeclaredIdentifiers;
4481 for (auto &WeakUndeclaredIdentifier : SemaRef.WeakUndeclaredIdentifiers) {
4482 IdentifierInfo *II = WeakUndeclaredIdentifier.first;
4483 WeakInfo &WI = WeakUndeclaredIdentifier.second;
4484 AddIdentifierRef(II, WeakUndeclaredIdentifiers);
4485 AddIdentifierRef(WI.getAlias(), WeakUndeclaredIdentifiers);
4486 AddSourceLocation(WI.getLocation(), WeakUndeclaredIdentifiers);
4487 WeakUndeclaredIdentifiers.push_back(WI.getUsed());
4488 }
4489
4490 // Build a record containing all of the ext_vector declarations.
4491 RecordData ExtVectorDecls;
4492 AddLazyVectorDecls(*this, SemaRef.ExtVectorDecls, ExtVectorDecls);
4493
4494 // Build a record containing all of the VTable uses information.
4495 RecordData VTableUses;
4496 if (!SemaRef.VTableUses.empty()) {
4497 for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I) {
4498 AddDeclRef(SemaRef.VTableUses[I].first, VTableUses);
4499 AddSourceLocation(SemaRef.VTableUses[I].second, VTableUses);
4500 VTableUses.push_back(SemaRef.VTablesUsed[SemaRef.VTableUses[I].first]);
4501 }
4502 }
4503
4504 // Build a record containing all of the UnusedLocalTypedefNameCandidates.
4505 RecordData UnusedLocalTypedefNameCandidates;
4506 for (const TypedefNameDecl *TD : SemaRef.UnusedLocalTypedefNameCandidates)
4507 AddDeclRef(TD, UnusedLocalTypedefNameCandidates);
4508
4509 // Build a record containing all of pending implicit instantiations.
4510 RecordData PendingInstantiations;
4511 for (const auto &I : SemaRef.PendingInstantiations) {
4512 AddDeclRef(I.first, PendingInstantiations);
4513 AddSourceLocation(I.second, PendingInstantiations);
4514 }
4515 assert(SemaRef.PendingLocalImplicitInstantiations.empty() &&((SemaRef.PendingLocalImplicitInstantiations.empty() &&
"There are local ones at end of translation unit!") ? static_cast
<void> (0) : __assert_fail ("SemaRef.PendingLocalImplicitInstantiations.empty() && \"There are local ones at end of translation unit!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 4516, __PRETTY_FUNCTION__))
4516 "There are local ones at end of translation unit!")((SemaRef.PendingLocalImplicitInstantiations.empty() &&
"There are local ones at end of translation unit!") ? static_cast
<void> (0) : __assert_fail ("SemaRef.PendingLocalImplicitInstantiations.empty() && \"There are local ones at end of translation unit!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 4516, __PRETTY_FUNCTION__))
;
4517
4518 // Build a record containing some declaration references.
4519 RecordData SemaDeclRefs;
4520 if (SemaRef.StdNamespace || SemaRef.StdBadAlloc || SemaRef.StdAlignValT) {
4521 AddDeclRef(SemaRef.getStdNamespace(), SemaDeclRefs);
4522 AddDeclRef(SemaRef.getStdBadAlloc(), SemaDeclRefs);
4523 AddDeclRef(SemaRef.getStdAlignValT(), SemaDeclRefs);
4524 }
4525
4526 RecordData CUDASpecialDeclRefs;
4527 if (Context.getcudaConfigureCallDecl()) {
4528 AddDeclRef(Context.getcudaConfigureCallDecl(), CUDASpecialDeclRefs);
4529 }
4530
4531 // Build a record containing all of the known namespaces.
4532 RecordData KnownNamespaces;
4533 for (const auto &I : SemaRef.KnownNamespaces) {
4534 if (!I.second)
4535 AddDeclRef(I.first, KnownNamespaces);
4536 }
4537
4538 // Build a record of all used, undefined objects that require definitions.
4539 RecordData UndefinedButUsed;
4540
4541 SmallVector<std::pair<NamedDecl *, SourceLocation>, 16> Undefined;
4542 SemaRef.getUndefinedButUsed(Undefined);
4543 for (const auto &I : Undefined) {
4544 AddDeclRef(I.first, UndefinedButUsed);
4545 AddSourceLocation(I.second, UndefinedButUsed);
4546 }
4547
4548 // Build a record containing all delete-expressions that we would like to
4549 // analyze later in AST.
4550 RecordData DeleteExprsToAnalyze;
4551
4552 if (!isModule) {
4553 for (const auto &DeleteExprsInfo :
4554 SemaRef.getMismatchingDeleteExpressions()) {
4555 AddDeclRef(DeleteExprsInfo.first, DeleteExprsToAnalyze);
4556 DeleteExprsToAnalyze.push_back(DeleteExprsInfo.second.size());
4557 for (const auto &DeleteLoc : DeleteExprsInfo.second) {
4558 AddSourceLocation(DeleteLoc.first, DeleteExprsToAnalyze);
4559 DeleteExprsToAnalyze.push_back(DeleteLoc.second);
4560 }
4561 }
4562 }
4563
4564 // Write the control block
4565 WriteControlBlock(PP, Context, isysroot, OutputFile);
4566
4567 // Write the remaining AST contents.
4568 Stream.FlushToWord();
4569 ASTBlockRange.first = Stream.GetCurrentBitNo();
4570 Stream.EnterSubblock(AST_BLOCK_ID, 5);
4571 ASTBlockStartOffset = Stream.GetCurrentBitNo();
4572
4573 // This is so that older clang versions, before the introduction
4574 // of the control block, can read and reject the newer PCH format.
4575 {
4576 RecordData Record = {VERSION_MAJOR};
4577 Stream.EmitRecord(METADATA_OLD_FORMAT, Record);
4578 }
4579
4580 // Create a lexical update block containing all of the declarations in the
4581 // translation unit that do not come from other AST files.
4582 const TranslationUnitDecl *TU = Context.getTranslationUnitDecl();
4583 SmallVector<uint32_t, 128> NewGlobalKindDeclPairs;
4584 for (const auto *D : TU->noload_decls()) {
4585 if (!D->isFromASTFile()) {
4586 NewGlobalKindDeclPairs.push_back(D->getKind());
4587 NewGlobalKindDeclPairs.push_back(GetDeclRef(D));
4588 }
4589 }
4590
4591 auto Abv = std::make_shared<BitCodeAbbrev>();
4592 Abv->Add(llvm::BitCodeAbbrevOp(TU_UPDATE_LEXICAL));
4593 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4594 unsigned TuUpdateLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv));
4595 {
4596 RecordData::value_type Record[] = {TU_UPDATE_LEXICAL};
4597 Stream.EmitRecordWithBlob(TuUpdateLexicalAbbrev, Record,
4598 bytes(NewGlobalKindDeclPairs));
4599 }
4600
4601 // And a visible updates block for the translation unit.
4602 Abv = std::make_shared<BitCodeAbbrev>();
4603 Abv->Add(llvm::BitCodeAbbrevOp(UPDATE_VISIBLE));
4604 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4605 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4606 UpdateVisibleAbbrev = Stream.EmitAbbrev(std::move(Abv));
4607 WriteDeclContextVisibleUpdate(TU);
4608
4609 // If we have any extern "C" names, write out a visible update for them.
4610 if (Context.ExternCContext)
4611 WriteDeclContextVisibleUpdate(Context.ExternCContext);
4612
4613 // If the translation unit has an anonymous namespace, and we don't already
4614 // have an update block for it, write it as an update block.
4615 // FIXME: Why do we not do this if there's already an update block?
4616 if (NamespaceDecl *NS = TU->getAnonymousNamespace()) {
4617 ASTWriter::UpdateRecord &Record = DeclUpdates[TU];
4618 if (Record.empty())
4619 Record.push_back(DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, NS));
4620 }
4621
4622 // Add update records for all mangling numbers and static local numbers.
4623 // These aren't really update records, but this is a convenient way of
4624 // tagging this rare extra data onto the declarations.
4625 for (const auto &Number : Context.MangleNumbers)
4626 if (!Number.first->isFromASTFile())
4627 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_MANGLING_NUMBER,
4628 Number.second));
4629 for (const auto &Number : Context.StaticLocalNumbers)
4630 if (!Number.first->isFromASTFile())
4631 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_STATIC_LOCAL_NUMBER,
4632 Number.second));
4633
4634 // Make sure visible decls, added to DeclContexts previously loaded from
4635 // an AST file, are registered for serialization. Likewise for template
4636 // specializations added to imported templates.
4637 for (const auto *I : DeclsToEmitEvenIfUnreferenced) {
4638 GetDeclRef(I);
4639 }
4640
4641 // Make sure all decls associated with an identifier are registered for
4642 // serialization, if we're storing decls with identifiers.
4643 if (!WritingModule || !getLangOpts().CPlusPlus) {
4644 llvm::SmallVector<const IdentifierInfo*, 256> IIs;
4645 for (const auto &ID : PP.getIdentifierTable()) {
4646 const IdentifierInfo *II = ID.second;
4647 if (!Chain || !II->isFromAST() || II->hasChangedSinceDeserialization())
4648 IIs.push_back(II);
4649 }
4650 // Sort the identifiers to visit based on their name.
4651 llvm::sort(IIs, llvm::deref<std::less<>>());
4652 for (const IdentifierInfo *II : IIs) {
4653 for (IdentifierResolver::iterator D = SemaRef.IdResolver.begin(II),
4654 DEnd = SemaRef.IdResolver.end();
4655 D != DEnd; ++D) {
4656 GetDeclRef(*D);
4657 }
4658 }
4659 }
4660
4661 // For method pool in the module, if it contains an entry for a selector,
4662 // the entry should be complete, containing everything introduced by that
4663 // module and all modules it imports. It's possible that the entry is out of
4664 // date, so we need to pull in the new content here.
4665
4666 // It's possible that updateOutOfDateSelector can update SelectorIDs. To be
4667 // safe, we copy all selectors out.
4668 llvm::SmallVector<Selector, 256> AllSelectors;
4669 for (auto &SelectorAndID : SelectorIDs)
4670 AllSelectors.push_back(SelectorAndID.first);
4671 for (auto &Selector : AllSelectors)
4672 SemaRef.updateOutOfDateSelector(Selector);
4673
4674 // Form the record of special types.
4675 RecordData SpecialTypes;
4676 AddTypeRef(Context.getRawCFConstantStringType(), SpecialTypes);
4677 AddTypeRef(Context.getFILEType(), SpecialTypes);
4678 AddTypeRef(Context.getjmp_bufType(), SpecialTypes);
4679 AddTypeRef(Context.getsigjmp_bufType(), SpecialTypes);
4680 AddTypeRef(Context.ObjCIdRedefinitionType, SpecialTypes);
4681 AddTypeRef(Context.ObjCClassRedefinitionType, SpecialTypes);
4682 AddTypeRef(Context.ObjCSelRedefinitionType, SpecialTypes);
4683 AddTypeRef(Context.getucontext_tType(), SpecialTypes);
4684
4685 if (Chain) {
4686 // Write the mapping information describing our module dependencies and how
4687 // each of those modules were mapped into our own offset/ID space, so that
4688 // the reader can build the appropriate mapping to its own offset/ID space.
4689 // The map consists solely of a blob with the following format:
4690 // *(module-kind:i8
4691 // module-name-len:i16 module-name:len*i8
4692 // source-location-offset:i32
4693 // identifier-id:i32
4694 // preprocessed-entity-id:i32
4695 // macro-definition-id:i32
4696 // submodule-id:i32
4697 // selector-id:i32
4698 // declaration-id:i32
4699 // c++-base-specifiers-id:i32
4700 // type-id:i32)
4701 //
4702 // module-kind is the ModuleKind enum value. If it is MK_PrebuiltModule,
4703 // MK_ExplicitModule or MK_ImplicitModule, then the module-name is the
4704 // module name. Otherwise, it is the module file name.
4705 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4706 Abbrev->Add(BitCodeAbbrevOp(MODULE_OFFSET_MAP));
4707 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4708 unsigned ModuleOffsetMapAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
4709 SmallString<2048> Buffer;
4710 {
4711 llvm::raw_svector_ostream Out(Buffer);
4712 for (ModuleFile &M : Chain->ModuleMgr) {
4713 using namespace llvm::support;
4714
4715 endian::Writer LE(Out, little);
4716 LE.write<uint8_t>(static_cast<uint8_t>(M.Kind));
4717 StringRef Name = M.isModule() ? M.ModuleName : M.FileName;
4718 LE.write<uint16_t>(Name.size());
4719 Out.write(Name.data(), Name.size());
4720
4721 // Note: if a base ID was uint max, it would not be possible to load
4722 // another module after it or have more than one entity inside it.
4723 uint32_t None = std::numeric_limits<uint32_t>::max();
4724
4725 auto writeBaseIDOrNone = [&](uint32_t BaseID, bool ShouldWrite) {
4726 assert(BaseID < std::numeric_limits<uint32_t>::max() && "base id too high")((BaseID < std::numeric_limits<uint32_t>::max() &&
"base id too high") ? static_cast<void> (0) : __assert_fail
("BaseID < std::numeric_limits<uint32_t>::max() && \"base id too high\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 4726, __PRETTY_FUNCTION__))
;
4727 if (ShouldWrite)
4728 LE.write<uint32_t>(BaseID);
4729 else
4730 LE.write<uint32_t>(None);
4731 };
4732
4733 // These values should be unique within a chain, since they will be read
4734 // as keys into ContinuousRangeMaps.
4735 writeBaseIDOrNone(M.SLocEntryBaseOffset, M.LocalNumSLocEntries);
4736 writeBaseIDOrNone(M.BaseIdentifierID, M.LocalNumIdentifiers);
4737 writeBaseIDOrNone(M.BaseMacroID, M.LocalNumMacros);
4738 writeBaseIDOrNone(M.BasePreprocessedEntityID,
4739 M.NumPreprocessedEntities);
4740 writeBaseIDOrNone(M.BaseSubmoduleID, M.LocalNumSubmodules);
4741 writeBaseIDOrNone(M.BaseSelectorID, M.LocalNumSelectors);
4742 writeBaseIDOrNone(M.BaseDeclID, M.LocalNumDecls);
4743 writeBaseIDOrNone(M.BaseTypeIndex, M.LocalNumTypes);
4744 }
4745 }
4746 RecordData::value_type Record[] = {MODULE_OFFSET_MAP};
4747 Stream.EmitRecordWithBlob(ModuleOffsetMapAbbrev, Record,
4748 Buffer.data(), Buffer.size());
4749 }
4750
4751 // Build a record containing all of the DeclsToCheckForDeferredDiags.
4752 RecordData DeclsToCheckForDeferredDiags;
4753 for (auto *D : SemaRef.DeclsToCheckForDeferredDiags)
4754 AddDeclRef(D, DeclsToCheckForDeferredDiags);
4755
4756 RecordData DeclUpdatesOffsetsRecord;
4757
4758 // Keep writing types, declarations, and declaration update records
4759 // until we've emitted all of them.
4760 Stream.EnterSubblock(DECLTYPES_BLOCK_ID, /*bits for abbreviations*/5);
4761 DeclTypesBlockStartOffset = Stream.GetCurrentBitNo();
4762 WriteTypeAbbrevs();
4763 WriteDeclAbbrevs();
4764 do {
4765 WriteDeclUpdatesBlocks(DeclUpdatesOffsetsRecord);
4766 while (!DeclTypesToEmit.empty()) {
4767 DeclOrType DOT = DeclTypesToEmit.front();
4768 DeclTypesToEmit.pop();
4769 if (DOT.isType())
4770 WriteType(DOT.getType());
4771 else
4772 WriteDecl(Context, DOT.getDecl());
4773 }
4774 } while (!DeclUpdates.empty());
4775 Stream.ExitBlock();
4776
4777 DoneWritingDeclsAndTypes = true;
4778
4779 // These things can only be done once we've written out decls and types.
4780 WriteTypeDeclOffsets();
4781 if (!DeclUpdatesOffsetsRecord.empty())
4782 Stream.EmitRecord(DECL_UPDATE_OFFSETS, DeclUpdatesOffsetsRecord);
4783 WriteFileDeclIDsMap();
4784 WriteSourceManagerBlock(Context.getSourceManager(), PP);
4785 WriteComments();
4786 WritePreprocessor(PP, isModule);
4787 WriteHeaderSearch(PP.getHeaderSearchInfo());
4788 WriteSelectors(SemaRef);
4789 WriteReferencedSelectorsPool(SemaRef);
4790 WriteLateParsedTemplates(SemaRef);
4791 WriteIdentifierTable(PP, SemaRef.IdResolver, isModule);
4792 WriteFPPragmaOptions(SemaRef.CurFPFeatureOverrides());
4793 WriteOpenCLExtensions(SemaRef);
4794 WriteOpenCLExtensionTypes(SemaRef);
4795 WriteCUDAPragmas(SemaRef);
4796
4797 // If we're emitting a module, write out the submodule information.
4798 if (WritingModule)
4799 WriteSubmodules(WritingModule);
4800
4801 // We need to have information about submodules to correctly deserialize
4802 // decls from OpenCLExtensionDecls block
4803 WriteOpenCLExtensionDecls(SemaRef);
4804
4805 Stream.EmitRecord(SPECIAL_TYPES, SpecialTypes);
4806
4807 // Write the record containing external, unnamed definitions.
4808 if (!EagerlyDeserializedDecls.empty())
4809 Stream.EmitRecord(EAGERLY_DESERIALIZED_DECLS, EagerlyDeserializedDecls);
4810
4811 if (!ModularCodegenDecls.empty())
4812 Stream.EmitRecord(MODULAR_CODEGEN_DECLS, ModularCodegenDecls);
4813
4814 // Write the record containing tentative definitions.
4815 if (!TentativeDefinitions.empty())
4816 Stream.EmitRecord(TENTATIVE_DEFINITIONS, TentativeDefinitions);
4817
4818 // Write the record containing unused file scoped decls.
4819 if (!UnusedFileScopedDecls.empty())
4820 Stream.EmitRecord(UNUSED_FILESCOPED_DECLS, UnusedFileScopedDecls);
4821
4822 // Write the record containing weak undeclared identifiers.
4823 if (!WeakUndeclaredIdentifiers.empty())
4824 Stream.EmitRecord(WEAK_UNDECLARED_IDENTIFIERS,
4825 WeakUndeclaredIdentifiers);
4826
4827 // Write the record containing ext_vector type names.
4828 if (!ExtVectorDecls.empty())
4829 Stream.EmitRecord(EXT_VECTOR_DECLS, ExtVectorDecls);
4830
4831 // Write the record containing VTable uses information.
4832 if (!VTableUses.empty())
4833 Stream.EmitRecord(VTABLE_USES, VTableUses);
4834
4835 // Write the record containing potentially unused local typedefs.
4836 if (!UnusedLocalTypedefNameCandidates.empty())
4837 Stream.EmitRecord(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES,
4838 UnusedLocalTypedefNameCandidates);
4839
4840 // Write the record containing pending implicit instantiations.
4841 if (!PendingInstantiations.empty())
4842 Stream.EmitRecord(PENDING_IMPLICIT_INSTANTIATIONS, PendingInstantiations);
4843
4844 // Write the record containing declaration references of Sema.
4845 if (!SemaDeclRefs.empty())
4846 Stream.EmitRecord(SEMA_DECL_REFS, SemaDeclRefs);
4847
4848 // Write the record containing decls to be checked for deferred diags.
4849 if (!DeclsToCheckForDeferredDiags.empty())
4850 Stream.EmitRecord(DECLS_TO_CHECK_FOR_DEFERRED_DIAGS,
4851 DeclsToCheckForDeferredDiags);
4852
4853 // Write the record containing CUDA-specific declaration references.
4854 if (!CUDASpecialDeclRefs.empty())
4855 Stream.EmitRecord(CUDA_SPECIAL_DECL_REFS, CUDASpecialDeclRefs);
4856
4857 // Write the delegating constructors.
4858 if (!DelegatingCtorDecls.empty())
4859 Stream.EmitRecord(DELEGATING_CTORS, DelegatingCtorDecls);
4860
4861 // Write the known namespaces.
4862 if (!KnownNamespaces.empty())
4863 Stream.EmitRecord(KNOWN_NAMESPACES, KnownNamespaces);
4864
4865 // Write the undefined internal functions and variables, and inline functions.
4866 if (!UndefinedButUsed.empty())
4867 Stream.EmitRecord(UNDEFINED_BUT_USED, UndefinedButUsed);
4868
4869 if (!DeleteExprsToAnalyze.empty())
4870 Stream.EmitRecord(DELETE_EXPRS_TO_ANALYZE, DeleteExprsToAnalyze);
4871
4872 // Write the visible updates to DeclContexts.
4873 for (auto *DC : UpdatedDeclContexts)
4874 WriteDeclContextVisibleUpdate(DC);
4875
4876 if (!WritingModule) {
4877 // Write the submodules that were imported, if any.
4878 struct ModuleInfo {
4879 uint64_t ID;
4880 Module *M;
4881 ModuleInfo(uint64_t ID, Module *M) : ID(ID), M(M) {}
4882 };
4883 llvm::SmallVector<ModuleInfo, 64> Imports;
4884 for (const auto *I : Context.local_imports()) {
4885 assert(SubmoduleIDs.find(I->getImportedModule()) != SubmoduleIDs.end())((SubmoduleIDs.find(I->getImportedModule()) != SubmoduleIDs
.end()) ? static_cast<void> (0) : __assert_fail ("SubmoduleIDs.find(I->getImportedModule()) != SubmoduleIDs.end()"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 4885, __PRETTY_FUNCTION__))
;
4886 Imports.push_back(ModuleInfo(SubmoduleIDs[I->getImportedModule()],
4887 I->getImportedModule()));
4888 }
4889
4890 if (!Imports.empty()) {
4891 auto Cmp = [](const ModuleInfo &A, const ModuleInfo &B) {
4892 return A.ID < B.ID;
4893 };
4894 auto Eq = [](const ModuleInfo &A, const ModuleInfo &B) {
4895 return A.ID == B.ID;
4896 };
4897
4898 // Sort and deduplicate module IDs.
4899 llvm::sort(Imports, Cmp);
4900 Imports.erase(std::unique(Imports.begin(), Imports.end(), Eq),
4901 Imports.end());
4902
4903 RecordData ImportedModules;
4904 for (const auto &Import : Imports) {
4905 ImportedModules.push_back(Import.ID);
4906 // FIXME: If the module has macros imported then later has declarations
4907 // imported, this location won't be the right one as a location for the
4908 // declaration imports.
4909 AddSourceLocation(PP.getModuleImportLoc(Import.M), ImportedModules);
4910 }
4911
4912 Stream.EmitRecord(IMPORTED_MODULES, ImportedModules);
4913 }
4914 }
4915
4916 WriteObjCCategories();
4917 if(!WritingModule) {
4918 WriteOptimizePragmaOptions(SemaRef);
4919 WriteMSStructPragmaOptions(SemaRef);
4920 WriteMSPointersToMembersPragmaOptions(SemaRef);
4921 }
4922 WritePackPragmaOptions(SemaRef);
4923 WriteFloatControlPragmaOptions(SemaRef);
4924
4925 // Some simple statistics
4926 RecordData::value_type Record[] = {
4927 NumStatements, NumMacros, NumLexicalDeclContexts, NumVisibleDeclContexts};
4928 Stream.EmitRecord(STATISTICS, Record);
4929 Stream.ExitBlock();
4930 Stream.FlushToWord();
4931 ASTBlockRange.second = Stream.GetCurrentBitNo();
4932
4933 // Write the module file extension blocks.
4934 for (const auto &ExtWriter : ModuleFileExtensionWriters)
4935 WriteModuleFileExtension(SemaRef, *ExtWriter);
4936
4937 return writeUnhashedControlBlock(PP, Context);
4938}
4939
4940void ASTWriter::WriteDeclUpdatesBlocks(RecordDataImpl &OffsetsRecord) {
4941 if (DeclUpdates.empty())
4942 return;
4943
4944 DeclUpdateMap LocalUpdates;
4945 LocalUpdates.swap(DeclUpdates);
4946
4947 for (auto &DeclUpdate : LocalUpdates) {
4948 const Decl *D = DeclUpdate.first;
4949
4950 bool HasUpdatedBody = false;
4951 RecordData RecordData;
4952 ASTRecordWriter Record(*this, RecordData);
4953 for (auto &Update : DeclUpdate.second) {
4954 DeclUpdateKind Kind = (DeclUpdateKind)Update.getKind();
4955
4956 // An updated body is emitted last, so that the reader doesn't need
4957 // to skip over the lazy body to reach statements for other records.
4958 if (Kind == UPD_CXX_ADDED_FUNCTION_DEFINITION)
4959 HasUpdatedBody = true;
4960 else
4961 Record.push_back(Kind);
4962
4963 switch (Kind) {
4964 case UPD_CXX_ADDED_IMPLICIT_MEMBER:
4965 case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION:
4966 case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE:
4967 assert(Update.getDecl() && "no decl to add?")((Update.getDecl() && "no decl to add?") ? static_cast
<void> (0) : __assert_fail ("Update.getDecl() && \"no decl to add?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 4967, __PRETTY_FUNCTION__))
;
4968 Record.push_back(GetDeclRef(Update.getDecl()));
4969 break;
4970
4971 case UPD_CXX_ADDED_FUNCTION_DEFINITION:
4972 break;
4973
4974 case UPD_CXX_POINT_OF_INSTANTIATION:
4975 // FIXME: Do we need to also save the template specialization kind here?
4976 Record.AddSourceLocation(Update.getLoc());
4977 break;
4978
4979 case UPD_CXX_ADDED_VAR_DEFINITION: {
4980 const VarDecl *VD = cast<VarDecl>(D);
4981 Record.push_back(VD->isInline());
4982 Record.push_back(VD->isInlineSpecified());
4983 if (VD->getInit()) {
4984 Record.push_back(!VD->isInitKnownICE() ? 1
4985 : (VD->isInitICE() ? 3 : 2));
4986 Record.AddStmt(const_cast<Expr*>(VD->getInit()));
4987 } else {
4988 Record.push_back(0);
4989 }
4990 break;
4991 }
4992
4993 case UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT:
4994 Record.AddStmt(const_cast<Expr *>(
4995 cast<ParmVarDecl>(Update.getDecl())->getDefaultArg()));
4996 break;
4997
4998 case UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER:
4999 Record.AddStmt(
5000 cast<FieldDecl>(Update.getDecl())->getInClassInitializer());
5001 break;
5002
5003 case UPD_CXX_INSTANTIATED_CLASS_DEFINITION: {
5004 auto *RD = cast<CXXRecordDecl>(D);
5005 UpdatedDeclContexts.insert(RD->getPrimaryContext());
5006 Record.push_back(RD->isParamDestroyedInCallee());
5007 Record.push_back(RD->getArgPassingRestrictions());
5008 Record.AddCXXDefinitionData(RD);
5009 Record.AddOffset(WriteDeclContextLexicalBlock(
5010 *Context, const_cast<CXXRecordDecl *>(RD)));
5011
5012 // This state is sometimes updated by template instantiation, when we
5013 // switch from the specialization referring to the template declaration
5014 // to it referring to the template definition.
5015 if (auto *MSInfo = RD->getMemberSpecializationInfo()) {
5016 Record.push_back(MSInfo->getTemplateSpecializationKind());
5017 Record.AddSourceLocation(MSInfo->getPointOfInstantiation());
5018 } else {
5019 auto *Spec = cast<ClassTemplateSpecializationDecl>(RD);
5020 Record.push_back(Spec->getTemplateSpecializationKind());
5021 Record.AddSourceLocation(Spec->getPointOfInstantiation());
5022
5023 // The instantiation might have been resolved to a partial
5024 // specialization. If so, record which one.
5025 auto From = Spec->getInstantiatedFrom();
5026 if (auto PartialSpec =
5027 From.dyn_cast<ClassTemplatePartialSpecializationDecl*>()) {
5028 Record.push_back(true);
5029 Record.AddDeclRef(PartialSpec);
5030 Record.AddTemplateArgumentList(
5031 &Spec->getTemplateInstantiationArgs());
5032 } else {
5033 Record.push_back(false);
5034 }
5035 }
5036 Record.push_back(RD->getTagKind());
5037 Record.AddSourceLocation(RD->getLocation());
5038 Record.AddSourceLocation(RD->getBeginLoc());
5039 Record.AddSourceRange(RD->getBraceRange());
5040
5041 // Instantiation may change attributes; write them all out afresh.
5042 Record.push_back(D->hasAttrs());
5043 if (D->hasAttrs())
5044 Record.AddAttributes(D->getAttrs());
5045
5046 // FIXME: Ensure we don't get here for explicit instantiations.
5047 break;
5048 }
5049
5050 case UPD_CXX_RESOLVED_DTOR_DELETE:
5051 Record.AddDeclRef(Update.getDecl());
5052 Record.AddStmt(cast<CXXDestructorDecl>(D)->getOperatorDeleteThisArg());
5053 break;
5054
5055 case UPD_CXX_RESOLVED_EXCEPTION_SPEC: {
5056 auto prototype =
5057 cast<FunctionDecl>(D)->getType()->castAs<FunctionProtoType>();
5058 Record.writeExceptionSpecInfo(prototype->getExceptionSpecInfo());
5059 break;
5060 }
5061
5062 case UPD_CXX_DEDUCED_RETURN_TYPE:
5063 Record.push_back(GetOrCreateTypeID(Update.getType()));
5064 break;
5065
5066 case UPD_DECL_MARKED_USED:
5067 break;
5068
5069 case UPD_MANGLING_NUMBER:
5070 case UPD_STATIC_LOCAL_NUMBER:
5071 Record.push_back(Update.getNumber());
5072 break;
5073
5074 case UPD_DECL_MARKED_OPENMP_THREADPRIVATE:
5075 Record.AddSourceRange(
5076 D->getAttr<OMPThreadPrivateDeclAttr>()->getRange());
5077 break;
5078
5079 case UPD_DECL_MARKED_OPENMP_ALLOCATE: {
5080 auto *A = D->getAttr<OMPAllocateDeclAttr>();
5081 Record.push_back(A->getAllocatorType());
5082 Record.AddStmt(A->getAllocator());
5083 Record.AddSourceRange(A->getRange());
5084 break;
5085 }
5086
5087 case UPD_DECL_MARKED_OPENMP_DECLARETARGET:
5088 Record.push_back(D->getAttr<OMPDeclareTargetDeclAttr>()->getMapType());
5089 Record.AddSourceRange(
5090 D->getAttr<OMPDeclareTargetDeclAttr>()->getRange());
5091 break;
5092
5093 case UPD_DECL_EXPORTED:
5094 Record.push_back(getSubmoduleID(Update.getModule()));
5095 break;
5096
5097 case UPD_ADDED_ATTR_TO_RECORD:
5098 Record.AddAttributes(llvm::makeArrayRef(Update.getAttr()));
5099 break;
5100 }
5101 }
5102
5103 if (HasUpdatedBody) {
5104 const auto *Def = cast<FunctionDecl>(D);
5105 Record.push_back(UPD_CXX_ADDED_FUNCTION_DEFINITION);
5106 Record.push_back(Def->isInlined());
5107 Record.AddSourceLocation(Def->getInnerLocStart());
5108 Record.AddFunctionDefinition(Def);
5109 }
5110
5111 OffsetsRecord.push_back(GetDeclRef(D));
5112 OffsetsRecord.push_back(Record.Emit(DECL_UPDATES));
5113 }
5114}
5115
5116void ASTWriter::AddSourceLocation(SourceLocation Loc, RecordDataImpl &Record) {
5117 uint32_t Raw = Loc.getRawEncoding();
5118 Record.push_back((Raw << 1) | (Raw >> 31));
5119}
5120
5121void ASTWriter::AddSourceRange(SourceRange Range, RecordDataImpl &Record) {
5122 AddSourceLocation(Range.getBegin(), Record);
5123 AddSourceLocation(Range.getEnd(), Record);
5124}
5125
5126void ASTRecordWriter::AddAPFloat(const llvm::APFloat &Value) {
5127 AddAPInt(Value.bitcastToAPInt());
5128}
5129
5130static void WriteFixedPointSemantics(ASTRecordWriter &Record,
5131 llvm::FixedPointSemantics FPSema) {
5132 Record.push_back(FPSema.getWidth());
5133 Record.push_back(FPSema.getScale());
5134 Record.push_back(FPSema.isSigned() | FPSema.isSaturated() << 1 |
5135 FPSema.hasUnsignedPadding() << 2);
5136}
5137
5138void ASTRecordWriter::AddAPValue(const APValue &Value) {
5139 APValue::ValueKind Kind = Value.getKind();
5140 push_back(static_cast<uint64_t>(Kind));
5141 switch (Kind) {
5142 case APValue::None:
5143 case APValue::Indeterminate:
5144 return;
5145 case APValue::Int:
5146 AddAPSInt(Value.getInt());
5147 return;
5148 case APValue::Float:
5149 push_back(static_cast<uint64_t>(
5150 llvm::APFloatBase::SemanticsToEnum(Value.getFloat().getSemantics())));
5151 AddAPFloat(Value.getFloat());
5152 return;
5153 case APValue::FixedPoint: {
5154 WriteFixedPointSemantics(*this, Value.getFixedPoint().getSemantics());
5155 AddAPSInt(Value.getFixedPoint().getValue());
5156 return;
5157 }
5158 case APValue::ComplexInt: {
5159 AddAPSInt(Value.getComplexIntReal());
5160 AddAPSInt(Value.getComplexIntImag());
5161 return;
5162 }
5163 case APValue::ComplexFloat: {
5164 push_back(static_cast<uint64_t>(llvm::APFloatBase::SemanticsToEnum(
5165 Value.getComplexFloatReal().getSemantics())));
5166 AddAPFloat(Value.getComplexFloatReal());
5167 push_back(static_cast<uint64_t>(llvm::APFloatBase::SemanticsToEnum(
5168 Value.getComplexFloatImag().getSemantics())));
5169 AddAPFloat(Value.getComplexFloatImag());
5170 return;
5171 }
5172 case APValue::LValue:
5173 case APValue::Vector:
5174 case APValue::Array:
5175 case APValue::Struct:
5176 case APValue::Union:
5177 case APValue::MemberPointer:
5178 case APValue::AddrLabelDiff:
5179 // TODO : Handle all these APValue::ValueKind.
5180 return;
5181 }
5182 llvm_unreachable("Invalid APValue::ValueKind")::llvm::llvm_unreachable_internal("Invalid APValue::ValueKind"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5182)
;
5183}
5184
5185void ASTWriter::AddIdentifierRef(const IdentifierInfo *II, RecordDataImpl &Record) {
5186 Record.push_back(getIdentifierRef(II));
5187}
5188
5189IdentID ASTWriter::getIdentifierRef(const IdentifierInfo *II) {
5190 if (!II)
5191 return 0;
5192
5193 IdentID &ID = IdentifierIDs[II];
5194 if (ID == 0)
5195 ID = NextIdentID++;
5196 return ID;
5197}
5198
5199MacroID ASTWriter::getMacroRef(MacroInfo *MI, const IdentifierInfo *Name) {
5200 // Don't emit builtin macros like __LINE__ to the AST file unless they
5201 // have been redefined by the header (in which case they are not
5202 // isBuiltinMacro).
5203 if (!MI || MI->isBuiltinMacro())
5204 return 0;
5205
5206 MacroID &ID = MacroIDs[MI];
5207 if (ID == 0) {
5208 ID = NextMacroID++;
5209 MacroInfoToEmitData Info = { Name, MI, ID };
5210 MacroInfosToEmit.push_back(Info);
5211 }
5212 return ID;
5213}
5214
5215MacroID ASTWriter::getMacroID(MacroInfo *MI) {
5216 if (!MI || MI->isBuiltinMacro())
5217 return 0;
5218
5219 assert(MacroIDs.find(MI) != MacroIDs.end() && "Macro not emitted!")((MacroIDs.find(MI) != MacroIDs.end() && "Macro not emitted!"
) ? static_cast<void> (0) : __assert_fail ("MacroIDs.find(MI) != MacroIDs.end() && \"Macro not emitted!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5219, __PRETTY_FUNCTION__))
;
5220 return MacroIDs[MI];
5221}
5222
5223uint32_t ASTWriter::getMacroDirectivesOffset(const IdentifierInfo *Name) {
5224 return IdentMacroDirectivesOffsetMap.lookup(Name);
5225}
5226
5227void ASTRecordWriter::AddSelectorRef(const Selector SelRef) {
5228 Record->push_back(Writer->getSelectorRef(SelRef));
5229}
5230
5231SelectorID ASTWriter::getSelectorRef(Selector Sel) {
5232 if (Sel.getAsOpaquePtr() == nullptr) {
5233 return 0;
5234 }
5235
5236 SelectorID SID = SelectorIDs[Sel];
5237 if (SID == 0 && Chain) {
5238 // This might trigger a ReadSelector callback, which will set the ID for
5239 // this selector.
5240 Chain->LoadSelector(Sel);
5241 SID = SelectorIDs[Sel];
5242 }
5243 if (SID == 0) {
5244 SID = NextSelectorID++;
5245 SelectorIDs[Sel] = SID;
5246 }
5247 return SID;
5248}
5249
5250void ASTRecordWriter::AddCXXTemporary(const CXXTemporary *Temp) {
5251 AddDeclRef(Temp->getDestructor());
5252}
5253
5254void ASTRecordWriter::AddTemplateArgumentLocInfo(
5255 TemplateArgument::ArgKind Kind, const TemplateArgumentLocInfo &Arg) {
5256 switch (Kind) {
5257 case TemplateArgument::Expression:
5258 AddStmt(Arg.getAsExpr());
5259 break;
5260 case TemplateArgument::Type:
5261 AddTypeSourceInfo(Arg.getAsTypeSourceInfo());
5262 break;
5263 case TemplateArgument::Template:
5264 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5265 AddSourceLocation(Arg.getTemplateNameLoc());
5266 break;
5267 case TemplateArgument::TemplateExpansion:
5268 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5269 AddSourceLocation(Arg.getTemplateNameLoc());
5270 AddSourceLocation(Arg.getTemplateEllipsisLoc());
5271 break;
5272 case TemplateArgument::Null:
5273 case TemplateArgument::Integral:
5274 case TemplateArgument::Declaration:
5275 case TemplateArgument::NullPtr:
5276 case TemplateArgument::Pack:
5277 // FIXME: Is this right?
5278 break;
5279 }
5280}
5281
5282void ASTRecordWriter::AddTemplateArgumentLoc(const TemplateArgumentLoc &Arg) {
5283 AddTemplateArgument(Arg.getArgument());
5284
5285 if (Arg.getArgument().getKind() == TemplateArgument::Expression) {
5286 bool InfoHasSameExpr
5287 = Arg.getArgument().getAsExpr() == Arg.getLocInfo().getAsExpr();
5288 Record->push_back(InfoHasSameExpr);
5289 if (InfoHasSameExpr)
5290 return; // Avoid storing the same expr twice.
5291 }
5292 AddTemplateArgumentLocInfo(Arg.getArgument().getKind(), Arg.getLocInfo());
5293}
5294
5295void ASTRecordWriter::AddTypeSourceInfo(TypeSourceInfo *TInfo) {
5296 if (!TInfo) {
5297 AddTypeRef(QualType());
5298 return;
5299 }
5300
5301 AddTypeRef(TInfo->getType());
5302 AddTypeLoc(TInfo->getTypeLoc());
5303}
5304
5305void ASTRecordWriter::AddTypeLoc(TypeLoc TL) {
5306 TypeLocWriter TLW(*this);
5307 for (; !TL.isNull(); TL = TL.getNextTypeLoc())
5308 TLW.Visit(TL);
5309}
5310
5311void ASTWriter::AddTypeRef(QualType T, RecordDataImpl &Record) {
5312 Record.push_back(GetOrCreateTypeID(T));
5313}
5314
5315TypeID ASTWriter::GetOrCreateTypeID(QualType T) {
5316 assert(Context)((Context) ? static_cast<void> (0) : __assert_fail ("Context"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5316, __PRETTY_FUNCTION__))
;
5317 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5318 if (T.isNull())
5319 return TypeIdx();
5320 assert(!T.getLocalFastQualifiers())((!T.getLocalFastQualifiers()) ? static_cast<void> (0) :
__assert_fail ("!T.getLocalFastQualifiers()", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5320, __PRETTY_FUNCTION__))
;
5321
5322 TypeIdx &Idx = TypeIdxs[T];
5323 if (Idx.getIndex() == 0) {
5324 if (DoneWritingDeclsAndTypes) {
5325 assert(0 && "New type seen after serializing all the types to emit!")((0 && "New type seen after serializing all the types to emit!"
) ? static_cast<void> (0) : __assert_fail ("0 && \"New type seen after serializing all the types to emit!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5325, __PRETTY_FUNCTION__))
;
5326 return TypeIdx();
5327 }
5328
5329 // We haven't seen this type before. Assign it a new ID and put it
5330 // into the queue of types to emit.
5331 Idx = TypeIdx(NextTypeID++);
5332 DeclTypesToEmit.push(T);
5333 }
5334 return Idx;
5335 });
5336}
5337
5338TypeID ASTWriter::getTypeID(QualType T) const {
5339 assert(Context)((Context) ? static_cast<void> (0) : __assert_fail ("Context"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5339, __PRETTY_FUNCTION__))
;
5340 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5341 if (T.isNull())
5342 return TypeIdx();
5343 assert(!T.getLocalFastQualifiers())((!T.getLocalFastQualifiers()) ? static_cast<void> (0) :
__assert_fail ("!T.getLocalFastQualifiers()", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5343, __PRETTY_FUNCTION__))
;
5344
5345 TypeIdxMap::const_iterator I = TypeIdxs.find(T);
5346 assert(I != TypeIdxs.end() && "Type not emitted!")((I != TypeIdxs.end() && "Type not emitted!") ? static_cast
<void> (0) : __assert_fail ("I != TypeIdxs.end() && \"Type not emitted!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5346, __PRETTY_FUNCTION__))
;
5347 return I->second;
5348 });
5349}
5350
5351void ASTWriter::AddDeclRef(const Decl *D, RecordDataImpl &Record) {
5352 Record.push_back(GetDeclRef(D));
5353}
5354
5355DeclID ASTWriter::GetDeclRef(const Decl *D) {
5356 assert(WritingAST && "Cannot request a declaration ID before AST writing")((WritingAST && "Cannot request a declaration ID before AST writing"
) ? static_cast<void> (0) : __assert_fail ("WritingAST && \"Cannot request a declaration ID before AST writing\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5356, __PRETTY_FUNCTION__))
;
5357
5358 if (!D) {
5359 return 0;
5360 }
5361
5362 // If D comes from an AST file, its declaration ID is already known and
5363 // fixed.
5364 if (D->isFromASTFile())
5365 return D->getGlobalID();
5366
5367 assert(!(reinterpret_cast<uintptr_t>(D) & 0x01) && "Invalid decl pointer")((!(reinterpret_cast<uintptr_t>(D) & 0x01) &&
"Invalid decl pointer") ? static_cast<void> (0) : __assert_fail
("!(reinterpret_cast<uintptr_t>(D) & 0x01) && \"Invalid decl pointer\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5367, __PRETTY_FUNCTION__))
;
5368 DeclID &ID = DeclIDs[D];
5369 if (ID == 0) {
5370 if (DoneWritingDeclsAndTypes) {
5371 assert(0 && "New decl seen after serializing all the decls to emit!")((0 && "New decl seen after serializing all the decls to emit!"
) ? static_cast<void> (0) : __assert_fail ("0 && \"New decl seen after serializing all the decls to emit!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5371, __PRETTY_FUNCTION__))
;
5372 return 0;
5373 }
5374
5375 // We haven't seen this declaration before. Give it a new ID and
5376 // enqueue it in the list of declarations to emit.
5377 ID = NextDeclID++;
5378 DeclTypesToEmit.push(const_cast<Decl *>(D));
5379 }
5380
5381 return ID;
5382}
5383
5384DeclID ASTWriter::getDeclID(const Decl *D) {
5385 if (!D)
5386 return 0;
5387
5388 // If D comes from an AST file, its declaration ID is already known and
5389 // fixed.
5390 if (D->isFromASTFile())
5391 return D->getGlobalID();
5392
5393 assert(DeclIDs.find(D) != DeclIDs.end() && "Declaration not emitted!")((DeclIDs.find(D) != DeclIDs.end() && "Declaration not emitted!"
) ? static_cast<void> (0) : __assert_fail ("DeclIDs.find(D) != DeclIDs.end() && \"Declaration not emitted!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5393, __PRETTY_FUNCTION__))
;
5394 return DeclIDs[D];
5395}
5396
5397void ASTWriter::associateDeclWithFile(const Decl *D, DeclID ID) {
5398 assert(ID)((ID) ? static_cast<void> (0) : __assert_fail ("ID", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5398, __PRETTY_FUNCTION__))
;
5399 assert(D)((D) ? static_cast<void> (0) : __assert_fail ("D", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5399, __PRETTY_FUNCTION__))
;
5400
5401 SourceLocation Loc = D->getLocation();
5402 if (Loc.isInvalid())
5403 return;
5404
5405 // We only keep track of the file-level declarations of each file.
5406 if (!D->getLexicalDeclContext()->isFileContext())
5407 return;
5408 // FIXME: ParmVarDecls that are part of a function type of a parameter of
5409 // a function/objc method, should not have TU as lexical context.
5410 // TemplateTemplateParmDecls that are part of an alias template, should not
5411 // have TU as lexical context.
5412 if (isa<ParmVarDecl>(D) || isa<TemplateTemplateParmDecl>(D))
5413 return;
5414
5415 SourceManager &SM = Context->getSourceManager();
5416 SourceLocation FileLoc = SM.getFileLoc(Loc);
5417 assert(SM.isLocalSourceLocation(FileLoc))((SM.isLocalSourceLocation(FileLoc)) ? static_cast<void>
(0) : __assert_fail ("SM.isLocalSourceLocation(FileLoc)", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5417, __PRETTY_FUNCTION__))
;
5418 FileID FID;
5419 unsigned Offset;
5420 std::tie(FID, Offset) = SM.getDecomposedLoc(FileLoc);
5421 if (FID.isInvalid())
5422 return;
5423 assert(SM.getSLocEntry(FID).isFile())((SM.getSLocEntry(FID).isFile()) ? static_cast<void> (0
) : __assert_fail ("SM.getSLocEntry(FID).isFile()", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5423, __PRETTY_FUNCTION__))
;
5424
5425 std::unique_ptr<DeclIDInFileInfo> &Info = FileDeclIDs[FID];
5426 if (!Info)
5427 Info = std::make_unique<DeclIDInFileInfo>();
5428
5429 std::pair<unsigned, serialization::DeclID> LocDecl(Offset, ID);
5430 LocDeclIDsTy &Decls = Info->DeclIDs;
5431
5432 if (Decls.empty() || Decls.back().first <= Offset) {
5433 Decls.push_back(LocDecl);
5434 return;
5435 }
5436
5437 LocDeclIDsTy::iterator I =
5438 llvm::upper_bound(Decls, LocDecl, llvm::less_first());
5439
5440 Decls.insert(I, LocDecl);
5441}
5442
5443unsigned ASTWriter::getAnonymousDeclarationNumber(const NamedDecl *D) {
5444 assert(needsAnonymousDeclarationNumber(D) &&((needsAnonymousDeclarationNumber(D) && "expected an anonymous declaration"
) ? static_cast<void> (0) : __assert_fail ("needsAnonymousDeclarationNumber(D) && \"expected an anonymous declaration\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5445, __PRETTY_FUNCTION__))
5445 "expected an anonymous declaration")((needsAnonymousDeclarationNumber(D) && "expected an anonymous declaration"
) ? static_cast<void> (0) : __assert_fail ("needsAnonymousDeclarationNumber(D) && \"expected an anonymous declaration\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5445, __PRETTY_FUNCTION__))
;
5446
5447 // Number the anonymous declarations within this context, if we've not
5448 // already done so.
5449 auto It = AnonymousDeclarationNumbers.find(D);
5450 if (It == AnonymousDeclarationNumbers.end()) {
5451 auto *DC = D->getLexicalDeclContext();
5452 numberAnonymousDeclsWithin(DC, [&](const NamedDecl *ND, unsigned Number) {
5453 AnonymousDeclarationNumbers[ND] = Number;
5454 });
5455
5456 It = AnonymousDeclarationNumbers.find(D);
5457 assert(It != AnonymousDeclarationNumbers.end() &&((It != AnonymousDeclarationNumbers.end() && "declaration not found within its lexical context"
) ? static_cast<void> (0) : __assert_fail ("It != AnonymousDeclarationNumbers.end() && \"declaration not found within its lexical context\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5458, __PRETTY_FUNCTION__))
5458 "declaration not found within its lexical context")((It != AnonymousDeclarationNumbers.end() && "declaration not found within its lexical context"
) ? static_cast<void> (0) : __assert_fail ("It != AnonymousDeclarationNumbers.end() && \"declaration not found within its lexical context\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5458, __PRETTY_FUNCTION__))
;
5459 }
5460
5461 return It->second;
5462}
5463
5464void ASTRecordWriter::AddDeclarationNameLoc(const DeclarationNameLoc &DNLoc,
5465 DeclarationName Name) {
5466 switch (Name.getNameKind()) {
5467 case DeclarationName::CXXConstructorName:
5468 case DeclarationName::CXXDestructorName:
5469 case DeclarationName::CXXConversionFunctionName:
5470 AddTypeSourceInfo(DNLoc.NamedType.TInfo);
5471 break;
5472
5473 case DeclarationName::CXXOperatorName:
5474 AddSourceLocation(SourceLocation::getFromRawEncoding(
5475 DNLoc.CXXOperatorName.BeginOpNameLoc));
5476 AddSourceLocation(
5477 SourceLocation::getFromRawEncoding(DNLoc.CXXOperatorName.EndOpNameLoc));
5478 break;
5479
5480 case DeclarationName::CXXLiteralOperatorName:
5481 AddSourceLocation(SourceLocation::getFromRawEncoding(
5482 DNLoc.CXXLiteralOperatorName.OpNameLoc));
5483 break;
5484
5485 case DeclarationName::Identifier:
5486 case DeclarationName::ObjCZeroArgSelector:
5487 case DeclarationName::ObjCOneArgSelector:
5488 case DeclarationName::ObjCMultiArgSelector:
5489 case DeclarationName::CXXUsingDirective:
5490 case DeclarationName::CXXDeductionGuideName:
5491 break;
5492 }
5493}
5494
5495void ASTRecordWriter::AddDeclarationNameInfo(
5496 const DeclarationNameInfo &NameInfo) {
5497 AddDeclarationName(NameInfo.getName());
5498 AddSourceLocation(NameInfo.getLoc());
5499 AddDeclarationNameLoc(NameInfo.getInfo(), NameInfo.getName());
5500}
5501
5502void ASTRecordWriter::AddQualifierInfo(const QualifierInfo &Info) {
5503 AddNestedNameSpecifierLoc(Info.QualifierLoc);
5504 Record->push_back(Info.NumTemplParamLists);
5505 for (unsigned i = 0, e = Info.NumTemplParamLists; i != e; ++i)
5506 AddTemplateParameterList(Info.TemplParamLists[i]);
5507}
5508
5509void ASTRecordWriter::AddNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS) {
5510 // Nested name specifiers usually aren't too long. I think that 8 would
5511 // typically accommodate the vast majority.
5512 SmallVector<NestedNameSpecifierLoc , 8> NestedNames;
5513
5514 // Push each of the nested-name-specifiers's onto a stack for
5515 // serialization in reverse order.
5516 while (NNS) {
5517 NestedNames.push_back(NNS);
5518 NNS = NNS.getPrefix();
5519 }
5520
5521 Record->push_back(NestedNames.size());
5522 while(!NestedNames.empty()) {
5523 NNS = NestedNames.pop_back_val();
5524 NestedNameSpecifier::SpecifierKind Kind
5525 = NNS.getNestedNameSpecifier()->getKind();
5526 Record->push_back(Kind);
5527 switch (Kind) {
5528 case NestedNameSpecifier::Identifier:
5529 AddIdentifierRef(NNS.getNestedNameSpecifier()->getAsIdentifier());
5530 AddSourceRange(NNS.getLocalSourceRange());
5531 break;
5532
5533 case NestedNameSpecifier::Namespace:
5534 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespace());
5535 AddSourceRange(NNS.getLocalSourceRange());
5536 break;
5537
5538 case NestedNameSpecifier::NamespaceAlias:
5539 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespaceAlias());
5540 AddSourceRange(NNS.getLocalSourceRange());
5541 break;
5542
5543 case NestedNameSpecifier::TypeSpec:
5544 case NestedNameSpecifier::TypeSpecWithTemplate:
5545 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5546 AddTypeRef(NNS.getTypeLoc().getType());
5547 AddTypeLoc(NNS.getTypeLoc());
5548 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5549 break;
5550
5551 case NestedNameSpecifier::Global:
5552 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5553 break;
5554
5555 case NestedNameSpecifier::Super:
5556 AddDeclRef(NNS.getNestedNameSpecifier()->getAsRecordDecl());
5557 AddSourceRange(NNS.getLocalSourceRange());
5558 break;
5559 }
5560 }
5561}
5562
5563void ASTRecordWriter::AddTemplateParameterList(
5564 const TemplateParameterList *TemplateParams) {
5565 assert(TemplateParams && "No TemplateParams!")((TemplateParams && "No TemplateParams!") ? static_cast
<void> (0) : __assert_fail ("TemplateParams && \"No TemplateParams!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5565, __PRETTY_FUNCTION__))
;
5566 AddSourceLocation(TemplateParams->getTemplateLoc());
5567 AddSourceLocation(TemplateParams->getLAngleLoc());
5568 AddSourceLocation(TemplateParams->getRAngleLoc());
5569
5570 Record->push_back(TemplateParams->size());
5571 for (const auto &P : *TemplateParams)
5572 AddDeclRef(P);
5573 if (const Expr *RequiresClause = TemplateParams->getRequiresClause()) {
5574 Record->push_back(true);
5575 AddStmt(const_cast<Expr*>(RequiresClause));
5576 } else {
5577 Record->push_back(false);
5578 }
5579}
5580
5581/// Emit a template argument list.
5582void ASTRecordWriter::AddTemplateArgumentList(
5583 const TemplateArgumentList *TemplateArgs) {
5584 assert(TemplateArgs && "No TemplateArgs!")((TemplateArgs && "No TemplateArgs!") ? static_cast<
void> (0) : __assert_fail ("TemplateArgs && \"No TemplateArgs!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5584, __PRETTY_FUNCTION__))
;
5585 Record->push_back(TemplateArgs->size());
5586 for (int i = 0, e = TemplateArgs->size(); i != e; ++i)
5587 AddTemplateArgument(TemplateArgs->get(i));
5588}
5589
5590void ASTRecordWriter::AddASTTemplateArgumentListInfo(
5591 const ASTTemplateArgumentListInfo *ASTTemplArgList) {
5592 assert(ASTTemplArgList && "No ASTTemplArgList!")((ASTTemplArgList && "No ASTTemplArgList!") ? static_cast
<void> (0) : __assert_fail ("ASTTemplArgList && \"No ASTTemplArgList!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5592, __PRETTY_FUNCTION__))
;
5593 AddSourceLocation(ASTTemplArgList->LAngleLoc);
5594 AddSourceLocation(ASTTemplArgList->RAngleLoc);
5595 Record->push_back(ASTTemplArgList->NumTemplateArgs);
5596 const TemplateArgumentLoc *TemplArgs = ASTTemplArgList->getTemplateArgs();
5597 for (int i = 0, e = ASTTemplArgList->NumTemplateArgs; i != e; ++i)
5598 AddTemplateArgumentLoc(TemplArgs[i]);
5599}
5600
5601void ASTRecordWriter::AddUnresolvedSet(const ASTUnresolvedSet &Set) {
5602 Record->push_back(Set.size());
5603 for (ASTUnresolvedSet::const_iterator
5604 I = Set.begin(), E = Set.end(); I != E; ++I) {
5605 AddDeclRef(I.getDecl());
5606 Record->push_back(I.getAccess());
5607 }
5608}
5609
5610// FIXME: Move this out of the main ASTRecordWriter interface.
5611void ASTRecordWriter::AddCXXBaseSpecifier(const CXXBaseSpecifier &Base) {
5612 Record->push_back(Base.isVirtual());
5613 Record->push_back(Base.isBaseOfClass());
5614 Record->push_back(Base.getAccessSpecifierAsWritten());
5615 Record->push_back(Base.getInheritConstructors());
5616 AddTypeSourceInfo(Base.getTypeSourceInfo());
5617 AddSourceRange(Base.getSourceRange());
5618 AddSourceLocation(Base.isPackExpansion()? Base.getEllipsisLoc()
5619 : SourceLocation());
5620}
5621
5622static uint64_t EmitCXXBaseSpecifiers(ASTWriter &W,
5623 ArrayRef<CXXBaseSpecifier> Bases) {
5624 ASTWriter::RecordData Record;
5625 ASTRecordWriter Writer(W, Record);
5626 Writer.push_back(Bases.size());
5627
5628 for (auto &Base : Bases)
5629 Writer.AddCXXBaseSpecifier(Base);
5630
5631 return Writer.Emit(serialization::DECL_CXX_BASE_SPECIFIERS);
5632}
5633
5634// FIXME: Move this out of the main ASTRecordWriter interface.
5635void ASTRecordWriter::AddCXXBaseSpecifiers(ArrayRef<CXXBaseSpecifier> Bases) {
5636 AddOffset(EmitCXXBaseSpecifiers(*Writer, Bases));
5637}
5638
5639static uint64_t
5640EmitCXXCtorInitializers(ASTWriter &W,
5641 ArrayRef<CXXCtorInitializer *> CtorInits) {
5642 ASTWriter::RecordData Record;
5643 ASTRecordWriter Writer(W, Record);
5644 Writer.push_back(CtorInits.size());
5645
5646 for (auto *Init : CtorInits) {
5647 if (Init->isBaseInitializer()) {
5648 Writer.push_back(CTOR_INITIALIZER_BASE);
5649 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5650 Writer.push_back(Init->isBaseVirtual());
5651 } else if (Init->isDelegatingInitializer()) {
5652 Writer.push_back(CTOR_INITIALIZER_DELEGATING);
5653 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5654 } else if (Init->isMemberInitializer()){
5655 Writer.push_back(CTOR_INITIALIZER_MEMBER);
5656 Writer.AddDeclRef(Init->getMember());
5657 } else {
5658 Writer.push_back(CTOR_INITIALIZER_INDIRECT_MEMBER);
5659 Writer.AddDeclRef(Init->getIndirectMember());
5660 }
5661
5662 Writer.AddSourceLocation(Init->getMemberLocation());
5663 Writer.AddStmt(Init->getInit());
5664 Writer.AddSourceLocation(Init->getLParenLoc());
5665 Writer.AddSourceLocation(Init->getRParenLoc());
5666 Writer.push_back(Init->isWritten());
5667 if (Init->isWritten())
5668 Writer.push_back(Init->getSourceOrder());
5669 }
5670
5671 return Writer.Emit(serialization::DECL_CXX_CTOR_INITIALIZERS);
5672}
5673
5674// FIXME: Move this out of the main ASTRecordWriter interface.
5675void ASTRecordWriter::AddCXXCtorInitializers(
5676 ArrayRef<CXXCtorInitializer *> CtorInits) {
5677 AddOffset(EmitCXXCtorInitializers(*Writer, CtorInits));
5678}
5679
5680void ASTRecordWriter::AddCXXDefinitionData(const CXXRecordDecl *D) {
5681 auto &Data = D->data();
5682 Record->push_back(Data.IsLambda);
5683
5684 #define FIELD(Name, Width, Merge) \
5685 Record->push_back(Data.Name);
5686 #include "clang/AST/CXXRecordDeclDefinitionBits.def"
5687
5688 // getODRHash will compute the ODRHash if it has not been previously computed.
5689 Record->push_back(D->getODRHash());
5690 bool ModulesDebugInfo =
5691 Writer->Context->getLangOpts().ModulesDebugInfo && !D->isDependentType();
5692 Record->push_back(ModulesDebugInfo);
5693 if (ModulesDebugInfo)
5694 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(D));
5695
5696 // IsLambda bit is already saved.
5697
5698 Record->push_back(Data.NumBases);
5699 if (Data.NumBases > 0)
5700 AddCXXBaseSpecifiers(Data.bases());
5701
5702 // FIXME: Make VBases lazily computed when needed to avoid storing them.
5703 Record->push_back(Data.NumVBases);
5704 if (Data.NumVBases > 0)
5705 AddCXXBaseSpecifiers(Data.vbases());
5706
5707 AddUnresolvedSet(Data.Conversions.get(*Writer->Context));
5708 Record->push_back(Data.ComputedVisibleConversions);
5709 if (Data.ComputedVisibleConversions)
5710 AddUnresolvedSet(Data.VisibleConversions.get(*Writer->Context));
5711 // Data.Definition is the owning decl, no need to write it.
5712 AddDeclRef(D->getFirstFriend());
5713
5714 // Add lambda-specific data.
5715 if (Data.IsLambda) {
5716 auto &Lambda = D->getLambdaData();
5717 Record->push_back(Lambda.Dependent);
5718 Record->push_back(Lambda.IsGenericLambda);
5719 Record->push_back(Lambda.CaptureDefault);
5720 Record->push_back(Lambda.NumCaptures);
5721 Record->push_back(Lambda.NumExplicitCaptures);
5722 Record->push_back(Lambda.HasKnownInternalLinkage);
5723 Record->push_back(Lambda.ManglingNumber);
5724 AddDeclRef(D->getLambdaContextDecl());
5725 AddTypeSourceInfo(Lambda.MethodTyInfo);
5726 for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
5727 const LambdaCapture &Capture = Lambda.Captures[I];
5728 AddSourceLocation(Capture.getLocation());
5729 Record->push_back(Capture.isImplicit());
5730 Record->push_back(Capture.getCaptureKind());
5731 switch (Capture.getCaptureKind()) {
5732 case LCK_StarThis:
5733 case LCK_This:
5734 case LCK_VLAType:
5735 break;
5736 case LCK_ByCopy:
5737 case LCK_ByRef:
5738 VarDecl *Var =
5739 Capture.capturesVariable() ? Capture.getCapturedVar() : nullptr;
5740 AddDeclRef(Var);
5741 AddSourceLocation(Capture.isPackExpansion() ? Capture.getEllipsisLoc()
5742 : SourceLocation());
5743 break;
5744 }
5745 }
5746 }
5747}
5748
5749void ASTWriter::ReaderInitialized(ASTReader *Reader) {
5750 assert(Reader && "Cannot remove chain")((Reader && "Cannot remove chain") ? static_cast<void
> (0) : __assert_fail ("Reader && \"Cannot remove chain\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5750, __PRETTY_FUNCTION__))
;
5751 assert((!Chain || Chain == Reader) && "Cannot replace chain")(((!Chain || Chain == Reader) && "Cannot replace chain"
) ? static_cast<void> (0) : __assert_fail ("(!Chain || Chain == Reader) && \"Cannot replace chain\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5751, __PRETTY_FUNCTION__))
;
5752 assert(FirstDeclID == NextDeclID &&((FirstDeclID == NextDeclID && FirstTypeID == NextTypeID
&& FirstIdentID == NextIdentID && FirstMacroID
== NextMacroID && FirstSubmoduleID == NextSubmoduleID
&& FirstSelectorID == NextSelectorID && "Setting chain after writing has started."
) ? static_cast<void> (0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5758, __PRETTY_FUNCTION__))
5753 FirstTypeID == NextTypeID &&((FirstDeclID == NextDeclID && FirstTypeID == NextTypeID
&& FirstIdentID == NextIdentID && FirstMacroID
== NextMacroID && FirstSubmoduleID == NextSubmoduleID
&& FirstSelectorID == NextSelectorID && "Setting chain after writing has started."
) ? static_cast<void> (0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5758, __PRETTY_FUNCTION__))
5754 FirstIdentID == NextIdentID &&((FirstDeclID == NextDeclID && FirstTypeID == NextTypeID
&& FirstIdentID == NextIdentID && FirstMacroID
== NextMacroID && FirstSubmoduleID == NextSubmoduleID
&& FirstSelectorID == NextSelectorID && "Setting chain after writing has started."
) ? static_cast<void> (0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5758, __PRETTY_FUNCTION__))
5755 FirstMacroID == NextMacroID &&((FirstDeclID == NextDeclID && FirstTypeID == NextTypeID
&& FirstIdentID == NextIdentID && FirstMacroID
== NextMacroID && FirstSubmoduleID == NextSubmoduleID
&& FirstSelectorID == NextSelectorID && "Setting chain after writing has started."
) ? static_cast<void> (0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5758, __PRETTY_FUNCTION__))
5756 FirstSubmoduleID == NextSubmoduleID &&((FirstDeclID == NextDeclID && FirstTypeID == NextTypeID
&& FirstIdentID == NextIdentID && FirstMacroID
== NextMacroID && FirstSubmoduleID == NextSubmoduleID
&& FirstSelectorID == NextSelectorID && "Setting chain after writing has started."
) ? static_cast<void> (0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5758, __PRETTY_FUNCTION__))
5757 FirstSelectorID == NextSelectorID &&((FirstDeclID == NextDeclID && FirstTypeID == NextTypeID
&& FirstIdentID == NextIdentID && FirstMacroID
== NextMacroID && FirstSubmoduleID == NextSubmoduleID
&& FirstSelectorID == NextSelectorID && "Setting chain after writing has started."
) ? static_cast<void> (0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5758, __PRETTY_FUNCTION__))
5758 "Setting chain after writing has started.")((FirstDeclID == NextDeclID && FirstTypeID == NextTypeID
&& FirstIdentID == NextIdentID && FirstMacroID
== NextMacroID && FirstSubmoduleID == NextSubmoduleID
&& FirstSelectorID == NextSelectorID && "Setting chain after writing has started."
) ? static_cast<void> (0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5758, __PRETTY_FUNCTION__))
;
5759
5760 Chain = Reader;
5761
5762 // Note, this will get called multiple times, once one the reader starts up
5763 // and again each time it's done reading a PCH or module.
5764 FirstDeclID = NUM_PREDEF_DECL_IDS + Chain->getTotalNumDecls();
5765 FirstTypeID = NUM_PREDEF_TYPE_IDS + Chain->getTotalNumTypes();
5766 FirstIdentID = NUM_PREDEF_IDENT_IDS + Chain->getTotalNumIdentifiers();
5767 FirstMacroID = NUM_PREDEF_MACRO_IDS + Chain->getTotalNumMacros();
5768 FirstSubmoduleID = NUM_PREDEF_SUBMODULE_IDS + Chain->getTotalNumSubmodules();
5769 FirstSelectorID = NUM_PREDEF_SELECTOR_IDS + Chain->getTotalNumSelectors();
5770 NextDeclID = FirstDeclID;
5771 NextTypeID = FirstTypeID;
5772 NextIdentID = FirstIdentID;
5773 NextMacroID = FirstMacroID;
5774 NextSelectorID = FirstSelectorID;
5775 NextSubmoduleID = FirstSubmoduleID;
5776}
5777
5778void ASTWriter::IdentifierRead(IdentID ID, IdentifierInfo *II) {
5779 // Always keep the highest ID. See \p TypeRead() for more information.
5780 IdentID &StoredID = IdentifierIDs[II];
5781 if (ID > StoredID)
5782 StoredID = ID;
5783}
5784
5785void ASTWriter::MacroRead(serialization::MacroID ID, MacroInfo *MI) {
5786 // Always keep the highest ID. See \p TypeRead() for more information.
5787 MacroID &StoredID = MacroIDs[MI];
5788 if (ID > StoredID)
5789 StoredID = ID;
5790}
5791
5792void ASTWriter::TypeRead(TypeIdx Idx, QualType T) {
5793 // Always take the highest-numbered type index. This copes with an interesting
5794 // case for chained AST writing where we schedule writing the type and then,
5795 // later, deserialize the type from another AST. In this case, we want to
5796 // keep the higher-numbered entry so that we can properly write it out to
5797 // the AST file.
5798 TypeIdx &StoredIdx = TypeIdxs[T];
5799 if (Idx.getIndex() >= StoredIdx.getIndex())
5800 StoredIdx = Idx;
5801}
5802
5803void ASTWriter::SelectorRead(SelectorID ID, Selector S) {
5804 // Always keep the highest ID. See \p TypeRead() for more information.
5805 SelectorID &StoredID = SelectorIDs[S];
5806 if (ID > StoredID)
5807 StoredID = ID;
5808}
5809
5810void ASTWriter::MacroDefinitionRead(serialization::PreprocessedEntityID ID,
5811 MacroDefinitionRecord *MD) {
5812 assert(MacroDefinitions.find(MD) == MacroDefinitions.end())((MacroDefinitions.find(MD) == MacroDefinitions.end()) ? static_cast
<void> (0) : __assert_fail ("MacroDefinitions.find(MD) == MacroDefinitions.end()"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5812, __PRETTY_FUNCTION__))
;
5813 MacroDefinitions[MD] = ID;
5814}
5815
5816void ASTWriter::ModuleRead(serialization::SubmoduleID ID, Module *Mod) {
5817 assert(SubmoduleIDs.find(Mod) == SubmoduleIDs.end())((SubmoduleIDs.find(Mod) == SubmoduleIDs.end()) ? static_cast
<void> (0) : __assert_fail ("SubmoduleIDs.find(Mod) == SubmoduleIDs.end()"
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5817, __PRETTY_FUNCTION__))
;
5818 SubmoduleIDs[Mod] = ID;
5819}
5820
5821void ASTWriter::CompletedTagDefinition(const TagDecl *D) {
5822 if (Chain && Chain->isProcessingUpdateRecords()) return;
5823 assert(D->isCompleteDefinition())((D->isCompleteDefinition()) ? static_cast<void> (0)
: __assert_fail ("D->isCompleteDefinition()", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5823, __PRETTY_FUNCTION__))
;
5824 assert(!WritingAST && "Already writing the AST!")((!WritingAST && "Already writing the AST!") ? static_cast
<void> (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5824, __PRETTY_FUNCTION__))
;
5825 if (auto *RD = dyn_cast<CXXRecordDecl>(D)) {
5826 // We are interested when a PCH decl is modified.
5827 if (RD->isFromASTFile()) {
5828 // A forward reference was mutated into a definition. Rewrite it.
5829 // FIXME: This happens during template instantiation, should we
5830 // have created a new definition decl instead ?
5831 assert(isTemplateInstantiation(RD->getTemplateSpecializationKind()) &&((isTemplateInstantiation(RD->getTemplateSpecializationKind
()) && "completed a tag from another module but not by instantiation?"
) ? static_cast<void> (0) : __assert_fail ("isTemplateInstantiation(RD->getTemplateSpecializationKind()) && \"completed a tag from another module but not by instantiation?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5832, __PRETTY_FUNCTION__))
5832 "completed a tag from another module but not by instantiation?")((isTemplateInstantiation(RD->getTemplateSpecializationKind
()) && "completed a tag from another module but not by instantiation?"
) ? static_cast<void> (0) : __assert_fail ("isTemplateInstantiation(RD->getTemplateSpecializationKind()) && \"completed a tag from another module but not by instantiation?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5832, __PRETTY_FUNCTION__))
;
5833 DeclUpdates[RD].push_back(
5834 DeclUpdate(UPD_CXX_INSTANTIATED_CLASS_DEFINITION));
5835 }
5836 }
5837}
5838
5839static bool isImportedDeclContext(ASTReader *Chain, const Decl *D) {
5840 if (D->isFromASTFile())
5841 return true;
5842
5843 // The predefined __va_list_tag struct is imported if we imported any decls.
5844 // FIXME: This is a gross hack.
5845 return D == D->getASTContext().getVaListTagDecl();
5846}
5847
5848void ASTWriter::AddedVisibleDecl(const DeclContext *DC, const Decl *D) {
5849 if (Chain && Chain->isProcessingUpdateRecords()) return;
5850 assert(DC->isLookupContext() &&((DC->isLookupContext() && "Should not add lookup results to non-lookup contexts!"
) ? static_cast<void> (0) : __assert_fail ("DC->isLookupContext() && \"Should not add lookup results to non-lookup contexts!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5851, __PRETTY_FUNCTION__))
5851 "Should not add lookup results to non-lookup contexts!")((DC->isLookupContext() && "Should not add lookup results to non-lookup contexts!"
) ? static_cast<void> (0) : __assert_fail ("DC->isLookupContext() && \"Should not add lookup results to non-lookup contexts!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5851, __PRETTY_FUNCTION__))
;
5852
5853 // TU is handled elsewhere.
5854 if (isa<TranslationUnitDecl>(DC))
5855 return;
5856
5857 // Namespaces are handled elsewhere, except for template instantiations of
5858 // FunctionTemplateDecls in namespaces. We are interested in cases where the
5859 // local instantiations are added to an imported context. Only happens when
5860 // adding ADL lookup candidates, for example templated friends.
5861 if (isa<NamespaceDecl>(DC) && D->getFriendObjectKind() == Decl::FOK_None &&
5862 !isa<FunctionTemplateDecl>(D))
5863 return;
5864
5865 // We're only interested in cases where a local declaration is added to an
5866 // imported context.
5867 if (D->isFromASTFile() || !isImportedDeclContext(Chain, cast<Decl>(DC)))
5868 return;
5869
5870 assert(DC == DC->getPrimaryContext() && "added to non-primary context")((DC == DC->getPrimaryContext() && "added to non-primary context"
) ? static_cast<void> (0) : __assert_fail ("DC == DC->getPrimaryContext() && \"added to non-primary context\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5870, __PRETTY_FUNCTION__))
;
5871 assert(!getDefinitiveDeclContext(DC) && "DeclContext not definitive!")((!getDefinitiveDeclContext(DC) && "DeclContext not definitive!"
) ? static_cast<void> (0) : __assert_fail ("!getDefinitiveDeclContext(DC) && \"DeclContext not definitive!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5871, __PRETTY_FUNCTION__))
;
5872 assert(!WritingAST && "Already writing the AST!")((!WritingAST && "Already writing the AST!") ? static_cast
<void> (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5872, __PRETTY_FUNCTION__))
;
5873 if (UpdatedDeclContexts.insert(DC) && !cast<Decl>(DC)->isFromASTFile()) {
5874 // We're adding a visible declaration to a predefined decl context. Ensure
5875 // that we write out all of its lookup results so we don't get a nasty
5876 // surprise when we try to emit its lookup table.
5877 for (auto *Child : DC->decls())
5878 DeclsToEmitEvenIfUnreferenced.push_back(Child);
5879 }
5880 DeclsToEmitEvenIfUnreferenced.push_back(D);
5881}
5882
5883void ASTWriter::AddedCXXImplicitMember(const CXXRecordDecl *RD, const Decl *D) {
5884 if (Chain && Chain->isProcessingUpdateRecords()) return;
5885 assert(D->isImplicit())((D->isImplicit()) ? static_cast<void> (0) : __assert_fail
("D->isImplicit()", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5885, __PRETTY_FUNCTION__))
;
5886
5887 // We're only interested in cases where a local declaration is added to an
5888 // imported context.
5889 if (D->isFromASTFile() || !isImportedDeclContext(Chain, RD))
5890 return;
5891
5892 if (!isa<CXXMethodDecl>(D))
5893 return;
5894
5895 // A decl coming from PCH was modified.
5896 assert(RD->isCompleteDefinition())((RD->isCompleteDefinition()) ? static_cast<void> (0
) : __assert_fail ("RD->isCompleteDefinition()", "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5896, __PRETTY_FUNCTION__))
;
5897 assert(!WritingAST && "Already writing the AST!")((!WritingAST && "Already writing the AST!") ? static_cast
<void> (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5897, __PRETTY_FUNCTION__))
;
5898 DeclUpdates[RD].push_back(DeclUpdate(UPD_CXX_ADDED_IMPLICIT_MEMBER, D));
5899}
5900
5901void ASTWriter::ResolvedExceptionSpec(const FunctionDecl *FD) {
5902 if (Chain && Chain->isProcessingUpdateRecords()) return;
5903 assert(!DoneWritingDeclsAndTypes && "Already done writing updates!")((!DoneWritingDeclsAndTypes && "Already done writing updates!"
) ? static_cast<void> (0) : __assert_fail ("!DoneWritingDeclsAndTypes && \"Already done writing updates!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5903, __PRETTY_FUNCTION__))
;
5904 if (!Chain) return;
5905 Chain->forEachImportedKeyDecl(FD, [&](const Decl *D) {
5906 // If we don't already know the exception specification for this redecl
5907 // chain, add an update record for it.
5908 if (isUnresolvedExceptionSpec(cast<FunctionDecl>(D)
5909 ->getType()
5910 ->castAs<FunctionProtoType>()
5911 ->getExceptionSpecType()))
5912 DeclUpdates[D].push_back(UPD_CXX_RESOLVED_EXCEPTION_SPEC);
5913 });
5914}
5915
5916void ASTWriter::DeducedReturnType(const FunctionDecl *FD, QualType ReturnType) {
5917 if (Chain && Chain->isProcessingUpdateRecords()) return;
5918 assert(!WritingAST && "Already writing the AST!")((!WritingAST && "Already writing the AST!") ? static_cast
<void> (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5918, __PRETTY_FUNCTION__))
;
5919 if (!Chain) return;
5920 Chain->forEachImportedKeyDecl(FD, [&](const Decl *D) {
5921 DeclUpdates[D].push_back(
5922 DeclUpdate(UPD_CXX_DEDUCED_RETURN_TYPE, ReturnType));
5923 });
5924}
5925
5926void ASTWriter::ResolvedOperatorDelete(const CXXDestructorDecl *DD,
5927 const FunctionDecl *Delete,
5928 Expr *ThisArg) {
5929 if (Chain && Chain->isProcessingUpdateRecords()) return;
5930 assert(!WritingAST && "Already writing the AST!")((!WritingAST && "Already writing the AST!") ? static_cast
<void> (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5930, __PRETTY_FUNCTION__))
;
5931 assert(Delete && "Not given an operator delete")((Delete && "Not given an operator delete") ? static_cast
<void> (0) : __assert_fail ("Delete && \"Not given an operator delete\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5931, __PRETTY_FUNCTION__))
;
5932 if (!Chain) return;
5933 Chain->forEachImportedKeyDecl(DD, [&](const Decl *D) {
5934 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_RESOLVED_DTOR_DELETE, Delete));
5935 });
5936}
5937
5938void ASTWriter::CompletedImplicitDefinition(const FunctionDecl *D) {
5939 if (Chain && Chain->isProcessingUpdateRecords()) return;
5940 assert(!WritingAST && "Already writing the AST!")((!WritingAST && "Already writing the AST!") ? static_cast
<void> (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5940, __PRETTY_FUNCTION__))
;
5941 if (!D->isFromASTFile())
5942 return; // Declaration not imported from PCH.
5943
5944 // Implicit function decl from a PCH was defined.
5945 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_FUNCTION_DEFINITION));
5946}
5947
5948void ASTWriter::VariableDefinitionInstantiated(const VarDecl *D) {
5949 if (Chain && Chain->isProcessingUpdateRecords()) return;
5950 assert(!WritingAST && "Already writing the AST!")((!WritingAST && "Already writing the AST!") ? static_cast
<void> (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5950, __PRETTY_FUNCTION__))
;
5951 if (!D->isFromASTFile())
5952 return;
5953
5954 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_VAR_DEFINITION));
5955}
5956
5957void ASTWriter::FunctionDefinitionInstantiated(const FunctionDecl *D) {
5958 if (Chain && Chain->isProcessingUpdateRecords()) return;
5959 assert(!WritingAST && "Already writing the AST!")((!WritingAST && "Already writing the AST!") ? static_cast
<void> (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5959, __PRETTY_FUNCTION__))
;
5960 if (!D->isFromASTFile())
5961 return;
5962
5963 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_FUNCTION_DEFINITION));
5964}
5965
5966void ASTWriter::InstantiationRequested(const ValueDecl *D) {
5967 if (Chain && Chain->isProcessingUpdateRecords()) return;
5968 assert(!WritingAST && "Already writing the AST!")((!WritingAST && "Already writing the AST!") ? static_cast
<void> (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5968, __PRETTY_FUNCTION__))
;
5969 if (!D->isFromASTFile())
5970 return;
5971
5972 // Since the actual instantiation is delayed, this really means that we need
5973 // to update the instantiation location.
5974 SourceLocation POI;
5975 if (auto *VD = dyn_cast<VarDecl>(D))
5976 POI = VD->getPointOfInstantiation();
5977 else
5978 POI = cast<FunctionDecl>(D)->getPointOfInstantiation();
5979 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_POINT_OF_INSTANTIATION, POI));
5980}
5981
5982void ASTWriter::DefaultArgumentInstantiated(const ParmVarDecl *D) {
5983 if (Chain && Chain->isProcessingUpdateRecords()) return;
5984 assert(!WritingAST && "Already writing the AST!")((!WritingAST && "Already writing the AST!") ? static_cast
<void> (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5984, __PRETTY_FUNCTION__))
;
5985 if (!D->isFromASTFile())
5986 return;
5987
5988 DeclUpdates[D].push_back(
5989 DeclUpdate(UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT, D));
5990}
5991
5992void ASTWriter::DefaultMemberInitializerInstantiated(const FieldDecl *D) {
5993 assert(!WritingAST && "Already writing the AST!")((!WritingAST && "Already writing the AST!") ? static_cast
<void> (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 5993, __PRETTY_FUNCTION__))
;
5994 if (!D->isFromASTFile())
5995 return;
5996
5997 DeclUpdates[D].push_back(
5998 DeclUpdate(UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER, D));
5999}
6000
6001void ASTWriter::AddedObjCCategoryToInterface(const ObjCCategoryDecl *CatD,
6002 const ObjCInterfaceDecl *IFD) {
6003 if (Chain && Chain->isProcessingUpdateRecords()) return;
6004 assert(!WritingAST && "Already writing the AST!")((!WritingAST && "Already writing the AST!") ? static_cast
<void> (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 6004, __PRETTY_FUNCTION__))
;
6005 if (!IFD->isFromASTFile())
6006 return; // Declaration not imported from PCH.
6007
6008 assert(IFD->getDefinition() && "Category on a class without a definition?")((IFD->getDefinition() && "Category on a class without a definition?"
) ? static_cast<void> (0) : __assert_fail ("IFD->getDefinition() && \"Category on a class without a definition?\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 6008, __PRETTY_FUNCTION__))
;
6009 ObjCClassesWithCategories.insert(
6010 const_cast<ObjCInterfaceDecl *>(IFD->getDefinition()));
6011}
6012
6013void ASTWriter::DeclarationMarkedUsed(const Decl *D) {
6014 if (Chain && Chain->isProcessingUpdateRecords()) return;
6015 assert(!WritingAST && "Already writing the AST!")((!WritingAST && "Already writing the AST!") ? static_cast
<void> (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 6015, __PRETTY_FUNCTION__))
;
6016
6017 // If there is *any* declaration of the entity that's not from an AST file,
6018 // we can skip writing the update record. We make sure that isUsed() triggers
6019 // completion of the redeclaration chain of the entity.
6020 for (auto Prev = D->getMostRecentDecl(); Prev; Prev = Prev->getPreviousDecl())
6021 if (IsLocalDecl(Prev))
6022 return;
6023
6024 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_MARKED_USED));
6025}
6026
6027void ASTWriter::DeclarationMarkedOpenMPThreadPrivate(const Decl *D) {
6028 if (Chain && Chain->isProcessingUpdateRecords()) return;
6029 assert(!WritingAST && "Already writing the AST!")((!WritingAST && "Already writing the AST!") ? static_cast
<void> (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 6029, __PRETTY_FUNCTION__))
;
6030 if (!D->isFromASTFile())
6031 return;
6032
6033 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_MARKED_OPENMP_THREADPRIVATE));
6034}
6035
6036void ASTWriter::DeclarationMarkedOpenMPAllocate(const Decl *D, const Attr *A) {
6037 if (Chain && Chain->isProcessingUpdateRecords()) return;
6038 assert(!WritingAST && "Already writing the AST!")((!WritingAST && "Already writing the AST!") ? static_cast
<void> (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-12~++20200917111122+b03c2b8395b/clang/lib/Serialization/ASTWriter.cpp"
, 6038, __PRETTY_FUNCTION__))
;
6039 if (!D->isFromASTFile())
6040 return;
6041
6042 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_MARKED_OPENMP_ALLOCATE, A));
6043}
6044
6045void ASTWriter::DeclarationMarkedOpenMPDeclareTarget(const