Bug Summary

File:clang/lib/Serialization/ASTWriter.cpp
Warning:line 1796, column 19
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 -fhalf-no-semantic-interposition -mframe-pointer=none -relaxed-aliasing -fmath-errno -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -ffunction-sections -fdata-sections -fcoverage-compilation-dir=/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/build-llvm/tools/clang/lib/Serialization -resource-dir /usr/lib/llvm-13/lib/clang/13.0.0 -D CLANG_ROUND_TRIP_CC1_ARGS=ON -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/build-llvm/tools/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/include -I /build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/build-llvm/include -I /build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/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/c++/6.3.0/backward -internal-isystem /usr/lib/llvm-13/lib/clang/13.0.0/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../x86_64-linux-gnu/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-13~++20210413100635+64c24f493e5f/build-llvm/tools/clang/lib/Serialization -fdebug-prefix-map=/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f=. -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 -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/scan-build-2021-04-14-063029-18377-1 -x c++ /build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp
1//===- ASTWriter.cpp - AST File Writer ------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file defines the ASTWriter class, which writes AST files.
10//
11//===----------------------------------------------------------------------===//
12
13#include "ASTCommon.h"
14#include "ASTReaderInternals.h"
15#include "MultiOnDiskHashTable.h"
16#include "clang/AST/ASTContext.h"
17#include "clang/AST/ASTUnresolvedSet.h"
18#include "clang/AST/AbstractTypeWriter.h"
19#include "clang/AST/Attr.h"
20#include "clang/AST/Decl.h"
21#include "clang/AST/DeclBase.h"
22#include "clang/AST/DeclCXX.h"
23#include "clang/AST/DeclContextInternals.h"
24#include "clang/AST/DeclFriend.h"
25#include "clang/AST/DeclObjC.h"
26#include "clang/AST/DeclTemplate.h"
27#include "clang/AST/DeclarationName.h"
28#include "clang/AST/Expr.h"
29#include "clang/AST/ExprCXX.h"
30#include "clang/AST/LambdaCapture.h"
31#include "clang/AST/NestedNameSpecifier.h"
32#include "clang/AST/OpenMPClause.h"
33#include "clang/AST/RawCommentList.h"
34#include "clang/AST/TemplateName.h"
35#include "clang/AST/Type.h"
36#include "clang/AST/TypeLocVisitor.h"
37#include "clang/Basic/Diagnostic.h"
38#include "clang/Basic/DiagnosticOptions.h"
39#include "clang/Basic/FileManager.h"
40#include "clang/Basic/FileSystemOptions.h"
41#include "clang/Basic/IdentifierTable.h"
42#include "clang/Basic/LLVM.h"
43#include "clang/Basic/Lambda.h"
44#include "clang/Basic/LangOptions.h"
45#include "clang/Basic/Module.h"
46#include "clang/Basic/ObjCRuntime.h"
47#include "clang/Basic/OpenCLOptions.h"
48#include "clang/Basic/SourceLocation.h"
49#include "clang/Basic/SourceManager.h"
50#include "clang/Basic/SourceManagerInternals.h"
51#include "clang/Basic/Specifiers.h"
52#include "clang/Basic/TargetInfo.h"
53#include "clang/Basic/TargetOptions.h"
54#include "clang/Basic/Version.h"
55#include "clang/Lex/HeaderSearch.h"
56#include "clang/Lex/HeaderSearchOptions.h"
57#include "clang/Lex/MacroInfo.h"
58#include "clang/Lex/ModuleMap.h"
59#include "clang/Lex/PreprocessingRecord.h"
60#include "clang/Lex/Preprocessor.h"
61#include "clang/Lex/PreprocessorOptions.h"
62#include "clang/Lex/Token.h"
63#include "clang/Sema/IdentifierResolver.h"
64#include "clang/Sema/ObjCMethodList.h"
65#include "clang/Sema/Sema.h"
66#include "clang/Sema/Weak.h"
67#include "clang/Serialization/ASTBitCodes.h"
68#include "clang/Serialization/ASTReader.h"
69#include "clang/Serialization/ASTRecordWriter.h"
70#include "clang/Serialization/InMemoryModuleCache.h"
71#include "clang/Serialization/ModuleFile.h"
72#include "clang/Serialization/ModuleFileExtension.h"
73#include "clang/Serialization/SerializationDiagnostic.h"
74#include "llvm/ADT/APFloat.h"
75#include "llvm/ADT/APInt.h"
76#include "llvm/ADT/APSInt.h"
77#include "llvm/ADT/ArrayRef.h"
78#include "llvm/ADT/DenseMap.h"
79#include "llvm/ADT/Hashing.h"
80#include "llvm/ADT/Optional.h"
81#include "llvm/ADT/PointerIntPair.h"
82#include "llvm/ADT/STLExtras.h"
83#include "llvm/ADT/ScopeExit.h"
84#include "llvm/ADT/SmallPtrSet.h"
85#include "llvm/ADT/SmallString.h"
86#include "llvm/ADT/SmallVector.h"
87#include "llvm/ADT/StringMap.h"
88#include "llvm/ADT/StringRef.h"
89#include "llvm/Bitstream/BitCodes.h"
90#include "llvm/Bitstream/BitstreamWriter.h"
91#include "llvm/Support/Casting.h"
92#include "llvm/Support/Compression.h"
93#include "llvm/Support/DJB.h"
94#include "llvm/Support/Endian.h"
95#include "llvm/Support/EndianStream.h"
96#include "llvm/Support/Error.h"
97#include "llvm/Support/ErrorHandling.h"
98#include "llvm/Support/LEB128.h"
99#include "llvm/Support/MemoryBuffer.h"
100#include "llvm/Support/OnDiskHashTable.h"
101#include "llvm/Support/Path.h"
102#include "llvm/Support/SHA1.h"
103#include "llvm/Support/VersionTuple.h"
104#include "llvm/Support/raw_ostream.h"
105#include <algorithm>
106#include <cassert>
107#include <cstdint>
108#include <cstdlib>
109#include <cstring>
110#include <ctime>
111#include <deque>
112#include <limits>
113#include <memory>
114#include <queue>
115#include <tuple>
116#include <utility>
117#include <vector>
118
119using namespace clang;
120using namespace clang::serialization;
121
122template <typename T, typename Allocator>
123static StringRef bytes(const std::vector<T, Allocator> &v) {
124 if (v.empty()) return StringRef();
125 return StringRef(reinterpret_cast<const char*>(&v[0]),
126 sizeof(T) * v.size());
127}
128
129template <typename T>
130static StringRef bytes(const SmallVectorImpl<T> &v) {
131 return StringRef(reinterpret_cast<const char*>(v.data()),
132 sizeof(T) * v.size());
133}
134
135//===----------------------------------------------------------------------===//
136// Type serialization
137//===----------------------------------------------------------------------===//
138
139static TypeCode getTypeCodeForTypeClass(Type::TypeClass id) {
140 switch (id) {
141#define TYPE_BIT_CODE(CLASS_ID, CODE_ID, CODE_VALUE) \
142 case Type::CLASS_ID: return TYPE_##CODE_ID;
143#include "clang/Serialization/TypeBitCodes.def"
144 case Type::Builtin:
145 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 145)
;
146 }
147 llvm_unreachable("bad type kind")::llvm::llvm_unreachable_internal("bad type kind", "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 147)
;
148}
149
150namespace {
151
152class ASTTypeWriter {
153 ASTWriter &Writer;
154 ASTWriter::RecordData Record;
155 ASTRecordWriter BasicWriter;
156
157public:
158 ASTTypeWriter(ASTWriter &Writer)
159 : Writer(Writer), BasicWriter(Writer, Record) {}
160
161 uint64_t write(QualType T) {
162 if (T.hasLocalNonFastQualifiers()) {
163 Qualifiers Qs = T.getLocalQualifiers();
164 BasicWriter.writeQualType(T.getLocalUnqualifiedType());
165 BasicWriter.writeQualifiers(Qs);
166 return BasicWriter.Emit(TYPE_EXT_QUAL, Writer.getTypeExtQualAbbrev());
167 }
168
169 const Type *typePtr = T.getTypePtr();
170 serialization::AbstractTypeWriter<ASTRecordWriter> atw(BasicWriter);
171 atw.write(typePtr);
172 return BasicWriter.Emit(getTypeCodeForTypeClass(typePtr->getTypeClass()),
173 /*abbrev*/ 0);
174 }
175};
176
177class TypeLocWriter : public TypeLocVisitor<TypeLocWriter> {
178 ASTRecordWriter &Record;
179
180public:
181 TypeLocWriter(ASTRecordWriter &Record) : Record(Record) {}
182
183#define ABSTRACT_TYPELOC(CLASS, PARENT)
184#define TYPELOC(CLASS, PARENT) \
185 void Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc);
186#include "clang/AST/TypeLocNodes.def"
187
188 void VisitArrayTypeLoc(ArrayTypeLoc TyLoc);
189 void VisitFunctionTypeLoc(FunctionTypeLoc TyLoc);
190};
191
192} // namespace
193
194void TypeLocWriter::VisitQualifiedTypeLoc(QualifiedTypeLoc TL) {
195 // nothing to do
196}
197
198void TypeLocWriter::VisitBuiltinTypeLoc(BuiltinTypeLoc TL) {
199 Record.AddSourceLocation(TL.getBuiltinLoc());
200 if (TL.needsExtraLocalData()) {
201 Record.push_back(TL.getWrittenTypeSpec());
202 Record.push_back(static_cast<uint64_t>(TL.getWrittenSignSpec()));
203 Record.push_back(static_cast<uint64_t>(TL.getWrittenWidthSpec()));
204 Record.push_back(TL.hasModeAttr());
205 }
206}
207
208void TypeLocWriter::VisitComplexTypeLoc(ComplexTypeLoc TL) {
209 Record.AddSourceLocation(TL.getNameLoc());
210}
211
212void TypeLocWriter::VisitPointerTypeLoc(PointerTypeLoc TL) {
213 Record.AddSourceLocation(TL.getStarLoc());
214}
215
216void TypeLocWriter::VisitDecayedTypeLoc(DecayedTypeLoc TL) {
217 // nothing to do
218}
219
220void TypeLocWriter::VisitAdjustedTypeLoc(AdjustedTypeLoc TL) {
221 // nothing to do
222}
223
224void TypeLocWriter::VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL) {
225 Record.AddSourceLocation(TL.getCaretLoc());
226}
227
228void TypeLocWriter::VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL) {
229 Record.AddSourceLocation(TL.getAmpLoc());
230}
231
232void TypeLocWriter::VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL) {
233 Record.AddSourceLocation(TL.getAmpAmpLoc());
234}
235
236void TypeLocWriter::VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL) {
237 Record.AddSourceLocation(TL.getStarLoc());
238 Record.AddTypeSourceInfo(TL.getClassTInfo());
239}
240
241void TypeLocWriter::VisitArrayTypeLoc(ArrayTypeLoc TL) {
242 Record.AddSourceLocation(TL.getLBracketLoc());
243 Record.AddSourceLocation(TL.getRBracketLoc());
244 Record.push_back(TL.getSizeExpr() ? 1 : 0);
245 if (TL.getSizeExpr())
246 Record.AddStmt(TL.getSizeExpr());
247}
248
249void TypeLocWriter::VisitConstantArrayTypeLoc(ConstantArrayTypeLoc TL) {
250 VisitArrayTypeLoc(TL);
251}
252
253void TypeLocWriter::VisitIncompleteArrayTypeLoc(IncompleteArrayTypeLoc TL) {
254 VisitArrayTypeLoc(TL);
255}
256
257void TypeLocWriter::VisitVariableArrayTypeLoc(VariableArrayTypeLoc TL) {
258 VisitArrayTypeLoc(TL);
259}
260
261void TypeLocWriter::VisitDependentSizedArrayTypeLoc(
262 DependentSizedArrayTypeLoc TL) {
263 VisitArrayTypeLoc(TL);
264}
265
266void TypeLocWriter::VisitDependentAddressSpaceTypeLoc(
267 DependentAddressSpaceTypeLoc TL) {
268 Record.AddSourceLocation(TL.getAttrNameLoc());
269 SourceRange range = TL.getAttrOperandParensRange();
270 Record.AddSourceLocation(range.getBegin());
271 Record.AddSourceLocation(range.getEnd());
272 Record.AddStmt(TL.getAttrExprOperand());
273}
274
275void TypeLocWriter::VisitDependentSizedExtVectorTypeLoc(
276 DependentSizedExtVectorTypeLoc TL) {
277 Record.AddSourceLocation(TL.getNameLoc());
278}
279
280void TypeLocWriter::VisitVectorTypeLoc(VectorTypeLoc TL) {
281 Record.AddSourceLocation(TL.getNameLoc());
282}
283
284void TypeLocWriter::VisitDependentVectorTypeLoc(
285 DependentVectorTypeLoc TL) {
286 Record.AddSourceLocation(TL.getNameLoc());
287}
288
289void TypeLocWriter::VisitExtVectorTypeLoc(ExtVectorTypeLoc TL) {
290 Record.AddSourceLocation(TL.getNameLoc());
291}
292
293void TypeLocWriter::VisitConstantMatrixTypeLoc(ConstantMatrixTypeLoc TL) {
294 Record.AddSourceLocation(TL.getAttrNameLoc());
295 SourceRange range = TL.getAttrOperandParensRange();
296 Record.AddSourceLocation(range.getBegin());
297 Record.AddSourceLocation(range.getEnd());
298 Record.AddStmt(TL.getAttrRowOperand());
299 Record.AddStmt(TL.getAttrColumnOperand());
300}
301
302void TypeLocWriter::VisitDependentSizedMatrixTypeLoc(
303 DependentSizedMatrixTypeLoc TL) {
304 Record.AddSourceLocation(TL.getAttrNameLoc());
305 SourceRange range = TL.getAttrOperandParensRange();
306 Record.AddSourceLocation(range.getBegin());
307 Record.AddSourceLocation(range.getEnd());
308 Record.AddStmt(TL.getAttrRowOperand());
309 Record.AddStmt(TL.getAttrColumnOperand());
310}
311
312void TypeLocWriter::VisitFunctionTypeLoc(FunctionTypeLoc TL) {
313 Record.AddSourceLocation(TL.getLocalRangeBegin());
314 Record.AddSourceLocation(TL.getLParenLoc());
315 Record.AddSourceLocation(TL.getRParenLoc());
316 Record.AddSourceRange(TL.getExceptionSpecRange());
317 Record.AddSourceLocation(TL.getLocalRangeEnd());
318 for (unsigned i = 0, e = TL.getNumParams(); i != e; ++i)
319 Record.AddDeclRef(TL.getParam(i));
320}
321
322void TypeLocWriter::VisitFunctionProtoTypeLoc(FunctionProtoTypeLoc TL) {
323 VisitFunctionTypeLoc(TL);
324}
325
326void TypeLocWriter::VisitFunctionNoProtoTypeLoc(FunctionNoProtoTypeLoc TL) {
327 VisitFunctionTypeLoc(TL);
328}
329
330void TypeLocWriter::VisitUnresolvedUsingTypeLoc(UnresolvedUsingTypeLoc TL) {
331 Record.AddSourceLocation(TL.getNameLoc());
332}
333
334void TypeLocWriter::VisitTypedefTypeLoc(TypedefTypeLoc TL) {
335 Record.AddSourceLocation(TL.getNameLoc());
336}
337
338void TypeLocWriter::VisitObjCTypeParamTypeLoc(ObjCTypeParamTypeLoc TL) {
339 if (TL.getNumProtocols()) {
340 Record.AddSourceLocation(TL.getProtocolLAngleLoc());
341 Record.AddSourceLocation(TL.getProtocolRAngleLoc());
342 }
343 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
344 Record.AddSourceLocation(TL.getProtocolLoc(i));
345}
346
347void TypeLocWriter::VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL) {
348 Record.AddSourceLocation(TL.getTypeofLoc());
349 Record.AddSourceLocation(TL.getLParenLoc());
350 Record.AddSourceLocation(TL.getRParenLoc());
351}
352
353void TypeLocWriter::VisitTypeOfTypeLoc(TypeOfTypeLoc TL) {
354 Record.AddSourceLocation(TL.getTypeofLoc());
355 Record.AddSourceLocation(TL.getLParenLoc());
356 Record.AddSourceLocation(TL.getRParenLoc());
357 Record.AddTypeSourceInfo(TL.getUnderlyingTInfo());
358}
359
360void TypeLocWriter::VisitDecltypeTypeLoc(DecltypeTypeLoc TL) {
361 Record.AddSourceLocation(TL.getNameLoc());
362}
363
364void TypeLocWriter::VisitUnaryTransformTypeLoc(UnaryTransformTypeLoc TL) {
365 Record.AddSourceLocation(TL.getKWLoc());
366 Record.AddSourceLocation(TL.getLParenLoc());
367 Record.AddSourceLocation(TL.getRParenLoc());
368 Record.AddTypeSourceInfo(TL.getUnderlyingTInfo());
369}
370
371void TypeLocWriter::VisitAutoTypeLoc(AutoTypeLoc TL) {
372 Record.AddSourceLocation(TL.getNameLoc());
373 Record.push_back(TL.isConstrained());
374 if (TL.isConstrained()) {
375 Record.AddNestedNameSpecifierLoc(TL.getNestedNameSpecifierLoc());
376 Record.AddSourceLocation(TL.getTemplateKWLoc());
377 Record.AddSourceLocation(TL.getConceptNameLoc());
378 Record.AddDeclRef(TL.getFoundDecl());
379 Record.AddSourceLocation(TL.getLAngleLoc());
380 Record.AddSourceLocation(TL.getRAngleLoc());
381 for (unsigned I = 0; I < TL.getNumArgs(); ++I)
382 Record.AddTemplateArgumentLocInfo(TL.getTypePtr()->getArg(I).getKind(),
383 TL.getArgLocInfo(I));
384 }
385}
386
387void TypeLocWriter::VisitDeducedTemplateSpecializationTypeLoc(
388 DeducedTemplateSpecializationTypeLoc TL) {
389 Record.AddSourceLocation(TL.getTemplateNameLoc());
390}
391
392void TypeLocWriter::VisitRecordTypeLoc(RecordTypeLoc TL) {
393 Record.AddSourceLocation(TL.getNameLoc());
394}
395
396void TypeLocWriter::VisitEnumTypeLoc(EnumTypeLoc TL) {
397 Record.AddSourceLocation(TL.getNameLoc());
398}
399
400void TypeLocWriter::VisitAttributedTypeLoc(AttributedTypeLoc TL) {
401 Record.AddAttr(TL.getAttr());
402}
403
404void TypeLocWriter::VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL) {
405 Record.AddSourceLocation(TL.getNameLoc());
406}
407
408void TypeLocWriter::VisitSubstTemplateTypeParmTypeLoc(
409 SubstTemplateTypeParmTypeLoc TL) {
410 Record.AddSourceLocation(TL.getNameLoc());
411}
412
413void TypeLocWriter::VisitSubstTemplateTypeParmPackTypeLoc(
414 SubstTemplateTypeParmPackTypeLoc TL) {
415 Record.AddSourceLocation(TL.getNameLoc());
416}
417
418void TypeLocWriter::VisitTemplateSpecializationTypeLoc(
419 TemplateSpecializationTypeLoc TL) {
420 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
421 Record.AddSourceLocation(TL.getTemplateNameLoc());
422 Record.AddSourceLocation(TL.getLAngleLoc());
423 Record.AddSourceLocation(TL.getRAngleLoc());
424 for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i)
425 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(i).getArgument().getKind(),
426 TL.getArgLoc(i).getLocInfo());
427}
428
429void TypeLocWriter::VisitParenTypeLoc(ParenTypeLoc TL) {
430 Record.AddSourceLocation(TL.getLParenLoc());
431 Record.AddSourceLocation(TL.getRParenLoc());
432}
433
434void TypeLocWriter::VisitMacroQualifiedTypeLoc(MacroQualifiedTypeLoc TL) {
435 Record.AddSourceLocation(TL.getExpansionLoc());
436}
437
438void TypeLocWriter::VisitElaboratedTypeLoc(ElaboratedTypeLoc TL) {
439 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
440 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
441}
442
443void TypeLocWriter::VisitInjectedClassNameTypeLoc(InjectedClassNameTypeLoc TL) {
444 Record.AddSourceLocation(TL.getNameLoc());
445}
446
447void TypeLocWriter::VisitDependentNameTypeLoc(DependentNameTypeLoc TL) {
448 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
449 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
450 Record.AddSourceLocation(TL.getNameLoc());
451}
452
453void TypeLocWriter::VisitDependentTemplateSpecializationTypeLoc(
454 DependentTemplateSpecializationTypeLoc TL) {
455 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
456 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
457 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
458 Record.AddSourceLocation(TL.getTemplateNameLoc());
459 Record.AddSourceLocation(TL.getLAngleLoc());
460 Record.AddSourceLocation(TL.getRAngleLoc());
461 for (unsigned I = 0, E = TL.getNumArgs(); I != E; ++I)
462 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(I).getArgument().getKind(),
463 TL.getArgLoc(I).getLocInfo());
464}
465
466void TypeLocWriter::VisitPackExpansionTypeLoc(PackExpansionTypeLoc TL) {
467 Record.AddSourceLocation(TL.getEllipsisLoc());
468}
469
470void TypeLocWriter::VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) {
471 Record.AddSourceLocation(TL.getNameLoc());
472}
473
474void TypeLocWriter::VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) {
475 Record.push_back(TL.hasBaseTypeAsWritten());
476 Record.AddSourceLocation(TL.getTypeArgsLAngleLoc());
477 Record.AddSourceLocation(TL.getTypeArgsRAngleLoc());
478 for (unsigned i = 0, e = TL.getNumTypeArgs(); i != e; ++i)
479 Record.AddTypeSourceInfo(TL.getTypeArgTInfo(i));
480 Record.AddSourceLocation(TL.getProtocolLAngleLoc());
481 Record.AddSourceLocation(TL.getProtocolRAngleLoc());
482 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
483 Record.AddSourceLocation(TL.getProtocolLoc(i));
484}
485
486void TypeLocWriter::VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) {
487 Record.AddSourceLocation(TL.getStarLoc());
488}
489
490void TypeLocWriter::VisitAtomicTypeLoc(AtomicTypeLoc TL) {
491 Record.AddSourceLocation(TL.getKWLoc());
492 Record.AddSourceLocation(TL.getLParenLoc());
493 Record.AddSourceLocation(TL.getRParenLoc());
494}
495
496void TypeLocWriter::VisitPipeTypeLoc(PipeTypeLoc TL) {
497 Record.AddSourceLocation(TL.getKWLoc());
498}
499
500void TypeLocWriter::VisitExtIntTypeLoc(clang::ExtIntTypeLoc TL) {
501 Record.AddSourceLocation(TL.getNameLoc());
502}
503void TypeLocWriter::VisitDependentExtIntTypeLoc(
504 clang::DependentExtIntTypeLoc TL) {
505 Record.AddSourceLocation(TL.getNameLoc());
506}
507
508void ASTWriter::WriteTypeAbbrevs() {
509 using namespace llvm;
510
511 std::shared_ptr<BitCodeAbbrev> Abv;
512
513 // Abbreviation for TYPE_EXT_QUAL
514 Abv = std::make_shared<BitCodeAbbrev>();
515 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_EXT_QUAL));
516 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
517 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 3)); // Quals
518 TypeExtQualAbbrev = Stream.EmitAbbrev(std::move(Abv));
519
520 // Abbreviation for TYPE_FUNCTION_PROTO
521 Abv = std::make_shared<BitCodeAbbrev>();
522 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_FUNCTION_PROTO));
523 // FunctionType
524 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ReturnType
525 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // NoReturn
526 Abv->Add(BitCodeAbbrevOp(0)); // HasRegParm
527 Abv->Add(BitCodeAbbrevOp(0)); // RegParm
528 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 4)); // CC
529 Abv->Add(BitCodeAbbrevOp(0)); // ProducesResult
530 Abv->Add(BitCodeAbbrevOp(0)); // NoCallerSavedRegs
531 Abv->Add(BitCodeAbbrevOp(0)); // NoCfCheck
532 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // CmseNSCall
533 // FunctionProtoType
534 Abv->Add(BitCodeAbbrevOp(0)); // IsVariadic
535 Abv->Add(BitCodeAbbrevOp(0)); // HasTrailingReturn
536 Abv->Add(BitCodeAbbrevOp(0)); // TypeQuals
537 Abv->Add(BitCodeAbbrevOp(0)); // RefQualifier
538 Abv->Add(BitCodeAbbrevOp(EST_None)); // ExceptionSpec
539 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // NumParams
540 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
541 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Params
542 TypeFunctionProtoAbbrev = Stream.EmitAbbrev(std::move(Abv));
543}
544
545//===----------------------------------------------------------------------===//
546// ASTWriter Implementation
547//===----------------------------------------------------------------------===//
548
549static void EmitBlockID(unsigned ID, const char *Name,
550 llvm::BitstreamWriter &Stream,
551 ASTWriter::RecordDataImpl &Record) {
552 Record.clear();
553 Record.push_back(ID);
554 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETBID, Record);
555
556 // Emit the block name if present.
557 if (!Name || Name[0] == 0)
558 return;
559 Record.clear();
560 while (*Name)
561 Record.push_back(*Name++);
562 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_BLOCKNAME, Record);
563}
564
565static void EmitRecordID(unsigned ID, const char *Name,
566 llvm::BitstreamWriter &Stream,
567 ASTWriter::RecordDataImpl &Record) {
568 Record.clear();
569 Record.push_back(ID);
570 while (*Name)
571 Record.push_back(*Name++);
572 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETRECORDNAME, Record);
573}
574
575static void AddStmtsExprs(llvm::BitstreamWriter &Stream,
576 ASTWriter::RecordDataImpl &Record) {
577#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
578 RECORD(STMT_STOP);
579 RECORD(STMT_NULL_PTR);
580 RECORD(STMT_REF_PTR);
581 RECORD(STMT_NULL);
582 RECORD(STMT_COMPOUND);
583 RECORD(STMT_CASE);
584 RECORD(STMT_DEFAULT);
585 RECORD(STMT_LABEL);
586 RECORD(STMT_ATTRIBUTED);
587 RECORD(STMT_IF);
588 RECORD(STMT_SWITCH);
589 RECORD(STMT_WHILE);
590 RECORD(STMT_DO);
591 RECORD(STMT_FOR);
592 RECORD(STMT_GOTO);
593 RECORD(STMT_INDIRECT_GOTO);
594 RECORD(STMT_CONTINUE);
595 RECORD(STMT_BREAK);
596 RECORD(STMT_RETURN);
597 RECORD(STMT_DECL);
598 RECORD(STMT_GCCASM);
599 RECORD(STMT_MSASM);
600 RECORD(EXPR_PREDEFINED);
601 RECORD(EXPR_DECL_REF);
602 RECORD(EXPR_INTEGER_LITERAL);
603 RECORD(EXPR_FIXEDPOINT_LITERAL);
604 RECORD(EXPR_FLOATING_LITERAL);
605 RECORD(EXPR_IMAGINARY_LITERAL);
606 RECORD(EXPR_STRING_LITERAL);
607 RECORD(EXPR_CHARACTER_LITERAL);
608 RECORD(EXPR_PAREN);
609 RECORD(EXPR_PAREN_LIST);
610 RECORD(EXPR_UNARY_OPERATOR);
611 RECORD(EXPR_SIZEOF_ALIGN_OF);
612 RECORD(EXPR_ARRAY_SUBSCRIPT);
613 RECORD(EXPR_CALL);
614 RECORD(EXPR_MEMBER);
615 RECORD(EXPR_BINARY_OPERATOR);
616 RECORD(EXPR_COMPOUND_ASSIGN_OPERATOR);
617 RECORD(EXPR_CONDITIONAL_OPERATOR);
618 RECORD(EXPR_IMPLICIT_CAST);
619 RECORD(EXPR_CSTYLE_CAST);
620 RECORD(EXPR_COMPOUND_LITERAL);
621 RECORD(EXPR_EXT_VECTOR_ELEMENT);
622 RECORD(EXPR_INIT_LIST);
623 RECORD(EXPR_DESIGNATED_INIT);
624 RECORD(EXPR_DESIGNATED_INIT_UPDATE);
625 RECORD(EXPR_IMPLICIT_VALUE_INIT);
626 RECORD(EXPR_NO_INIT);
627 RECORD(EXPR_VA_ARG);
628 RECORD(EXPR_ADDR_LABEL);
629 RECORD(EXPR_STMT);
630 RECORD(EXPR_CHOOSE);
631 RECORD(EXPR_GNU_NULL);
632 RECORD(EXPR_SHUFFLE_VECTOR);
633 RECORD(EXPR_BLOCK);
634 RECORD(EXPR_GENERIC_SELECTION);
635 RECORD(EXPR_OBJC_STRING_LITERAL);
636 RECORD(EXPR_OBJC_BOXED_EXPRESSION);
637 RECORD(EXPR_OBJC_ARRAY_LITERAL);
638 RECORD(EXPR_OBJC_DICTIONARY_LITERAL);
639 RECORD(EXPR_OBJC_ENCODE);
640 RECORD(EXPR_OBJC_SELECTOR_EXPR);
641 RECORD(EXPR_OBJC_PROTOCOL_EXPR);
642 RECORD(EXPR_OBJC_IVAR_REF_EXPR);
643 RECORD(EXPR_OBJC_PROPERTY_REF_EXPR);
644 RECORD(EXPR_OBJC_KVC_REF_EXPR);
645 RECORD(EXPR_OBJC_MESSAGE_EXPR);
646 RECORD(STMT_OBJC_FOR_COLLECTION);
647 RECORD(STMT_OBJC_CATCH);
648 RECORD(STMT_OBJC_FINALLY);
649 RECORD(STMT_OBJC_AT_TRY);
650 RECORD(STMT_OBJC_AT_SYNCHRONIZED);
651 RECORD(STMT_OBJC_AT_THROW);
652 RECORD(EXPR_OBJC_BOOL_LITERAL);
653 RECORD(STMT_CXX_CATCH);
654 RECORD(STMT_CXX_TRY);
655 RECORD(STMT_CXX_FOR_RANGE);
656 RECORD(EXPR_CXX_OPERATOR_CALL);
657 RECORD(EXPR_CXX_MEMBER_CALL);
658 RECORD(EXPR_CXX_REWRITTEN_BINARY_OPERATOR);
659 RECORD(EXPR_CXX_CONSTRUCT);
660 RECORD(EXPR_CXX_TEMPORARY_OBJECT);
661 RECORD(EXPR_CXX_STATIC_CAST);
662 RECORD(EXPR_CXX_DYNAMIC_CAST);
663 RECORD(EXPR_CXX_REINTERPRET_CAST);
664 RECORD(EXPR_CXX_CONST_CAST);
665 RECORD(EXPR_CXX_ADDRSPACE_CAST);
666 RECORD(EXPR_CXX_FUNCTIONAL_CAST);
667 RECORD(EXPR_USER_DEFINED_LITERAL);
668 RECORD(EXPR_CXX_STD_INITIALIZER_LIST);
669 RECORD(EXPR_CXX_BOOL_LITERAL);
670 RECORD(EXPR_CXX_NULL_PTR_LITERAL);
671 RECORD(EXPR_CXX_TYPEID_EXPR);
672 RECORD(EXPR_CXX_TYPEID_TYPE);
673 RECORD(EXPR_CXX_THIS);
674 RECORD(EXPR_CXX_THROW);
675 RECORD(EXPR_CXX_DEFAULT_ARG);
676 RECORD(EXPR_CXX_DEFAULT_INIT);
677 RECORD(EXPR_CXX_BIND_TEMPORARY);
678 RECORD(EXPR_CXX_SCALAR_VALUE_INIT);
679 RECORD(EXPR_CXX_NEW);
680 RECORD(EXPR_CXX_DELETE);
681 RECORD(EXPR_CXX_PSEUDO_DESTRUCTOR);
682 RECORD(EXPR_EXPR_WITH_CLEANUPS);
683 RECORD(EXPR_CXX_DEPENDENT_SCOPE_MEMBER);
684 RECORD(EXPR_CXX_DEPENDENT_SCOPE_DECL_REF);
685 RECORD(EXPR_CXX_UNRESOLVED_CONSTRUCT);
686 RECORD(EXPR_CXX_UNRESOLVED_MEMBER);
687 RECORD(EXPR_CXX_UNRESOLVED_LOOKUP);
688 RECORD(EXPR_CXX_EXPRESSION_TRAIT);
689 RECORD(EXPR_CXX_NOEXCEPT);
690 RECORD(EXPR_OPAQUE_VALUE);
691 RECORD(EXPR_BINARY_CONDITIONAL_OPERATOR);
692 RECORD(EXPR_TYPE_TRAIT);
693 RECORD(EXPR_ARRAY_TYPE_TRAIT);
694 RECORD(EXPR_PACK_EXPANSION);
695 RECORD(EXPR_SIZEOF_PACK);
696 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM);
697 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK);
698 RECORD(EXPR_FUNCTION_PARM_PACK);
699 RECORD(EXPR_MATERIALIZE_TEMPORARY);
700 RECORD(EXPR_CUDA_KERNEL_CALL);
701 RECORD(EXPR_CXX_UUIDOF_EXPR);
702 RECORD(EXPR_CXX_UUIDOF_TYPE);
703 RECORD(EXPR_LAMBDA);
704#undef RECORD
705}
706
707void ASTWriter::WriteBlockInfoBlock() {
708 RecordData Record;
709 Stream.EnterBlockInfoBlock();
710
711#define BLOCK(X) EmitBlockID(X ## _ID, #X, Stream, Record)
712#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
713
714 // Control Block.
715 BLOCK(CONTROL_BLOCK);
716 RECORD(METADATA);
717 RECORD(MODULE_NAME);
718 RECORD(MODULE_DIRECTORY);
719 RECORD(MODULE_MAP_FILE);
720 RECORD(IMPORTS);
721 RECORD(ORIGINAL_FILE);
722 RECORD(ORIGINAL_PCH_DIR);
723 RECORD(ORIGINAL_FILE_ID);
724 RECORD(INPUT_FILE_OFFSETS);
725
726 BLOCK(OPTIONS_BLOCK);
727 RECORD(LANGUAGE_OPTIONS);
728 RECORD(TARGET_OPTIONS);
729 RECORD(FILE_SYSTEM_OPTIONS);
730 RECORD(HEADER_SEARCH_OPTIONS);
731 RECORD(PREPROCESSOR_OPTIONS);
732
733 BLOCK(INPUT_FILES_BLOCK);
734 RECORD(INPUT_FILE);
735 RECORD(INPUT_FILE_HASH);
736
737 // AST Top-Level Block.
738 BLOCK(AST_BLOCK);
739 RECORD(TYPE_OFFSET);
740 RECORD(DECL_OFFSET);
741 RECORD(IDENTIFIER_OFFSET);
742 RECORD(IDENTIFIER_TABLE);
743 RECORD(EAGERLY_DESERIALIZED_DECLS);
744 RECORD(MODULAR_CODEGEN_DECLS);
745 RECORD(SPECIAL_TYPES);
746 RECORD(STATISTICS);
747 RECORD(TENTATIVE_DEFINITIONS);
748 RECORD(SELECTOR_OFFSETS);
749 RECORD(METHOD_POOL);
750 RECORD(PP_COUNTER_VALUE);
751 RECORD(SOURCE_LOCATION_OFFSETS);
752 RECORD(SOURCE_LOCATION_PRELOADS);
753 RECORD(EXT_VECTOR_DECLS);
754 RECORD(UNUSED_FILESCOPED_DECLS);
755 RECORD(PPD_ENTITIES_OFFSETS);
756 RECORD(VTABLE_USES);
757 RECORD(PPD_SKIPPED_RANGES);
758 RECORD(REFERENCED_SELECTOR_POOL);
759 RECORD(TU_UPDATE_LEXICAL);
760 RECORD(SEMA_DECL_REFS);
761 RECORD(WEAK_UNDECLARED_IDENTIFIERS);
762 RECORD(PENDING_IMPLICIT_INSTANTIATIONS);
763 RECORD(UPDATE_VISIBLE);
764 RECORD(DECL_UPDATE_OFFSETS);
765 RECORD(DECL_UPDATES);
766 RECORD(CUDA_SPECIAL_DECL_REFS);
767 RECORD(HEADER_SEARCH_TABLE);
768 RECORD(FP_PRAGMA_OPTIONS);
769 RECORD(OPENCL_EXTENSIONS);
770 RECORD(OPENCL_EXTENSION_TYPES);
771 RECORD(OPENCL_EXTENSION_DECLS);
772 RECORD(DELEGATING_CTORS);
773 RECORD(KNOWN_NAMESPACES);
774 RECORD(MODULE_OFFSET_MAP);
775 RECORD(SOURCE_MANAGER_LINE_TABLE);
776 RECORD(OBJC_CATEGORIES_MAP);
777 RECORD(FILE_SORTED_DECLS);
778 RECORD(IMPORTED_MODULES);
779 RECORD(OBJC_CATEGORIES);
780 RECORD(MACRO_OFFSET);
781 RECORD(INTERESTING_IDENTIFIERS);
782 RECORD(UNDEFINED_BUT_USED);
783 RECORD(LATE_PARSED_TEMPLATE);
784 RECORD(OPTIMIZE_PRAGMA_OPTIONS);
785 RECORD(MSSTRUCT_PRAGMA_OPTIONS);
786 RECORD(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS);
787 RECORD(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES);
788 RECORD(DELETE_EXPRS_TO_ANALYZE);
789 RECORD(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH);
790 RECORD(PP_CONDITIONAL_STACK);
791 RECORD(DECLS_TO_CHECK_FOR_DEFERRED_DIAGS);
792
793 // SourceManager Block.
794 BLOCK(SOURCE_MANAGER_BLOCK);
795 RECORD(SM_SLOC_FILE_ENTRY);
796 RECORD(SM_SLOC_BUFFER_ENTRY);
797 RECORD(SM_SLOC_BUFFER_BLOB);
798 RECORD(SM_SLOC_BUFFER_BLOB_COMPRESSED);
799 RECORD(SM_SLOC_EXPANSION_ENTRY);
800
801 // Preprocessor Block.
802 BLOCK(PREPROCESSOR_BLOCK);
803 RECORD(PP_MACRO_DIRECTIVE_HISTORY);
804 RECORD(PP_MACRO_FUNCTION_LIKE);
805 RECORD(PP_MACRO_OBJECT_LIKE);
806 RECORD(PP_MODULE_MACRO);
807 RECORD(PP_TOKEN);
808
809 // Submodule Block.
810 BLOCK(SUBMODULE_BLOCK);
811 RECORD(SUBMODULE_METADATA);
812 RECORD(SUBMODULE_DEFINITION);
813 RECORD(SUBMODULE_UMBRELLA_HEADER);
814 RECORD(SUBMODULE_HEADER);
815 RECORD(SUBMODULE_TOPHEADER);
816 RECORD(SUBMODULE_UMBRELLA_DIR);
817 RECORD(SUBMODULE_IMPORTS);
818 RECORD(SUBMODULE_EXPORTS);
819 RECORD(SUBMODULE_REQUIRES);
820 RECORD(SUBMODULE_EXCLUDED_HEADER);
821 RECORD(SUBMODULE_LINK_LIBRARY);
822 RECORD(SUBMODULE_CONFIG_MACRO);
823 RECORD(SUBMODULE_CONFLICT);
824 RECORD(SUBMODULE_PRIVATE_HEADER);
825 RECORD(SUBMODULE_TEXTUAL_HEADER);
826 RECORD(SUBMODULE_PRIVATE_TEXTUAL_HEADER);
827 RECORD(SUBMODULE_INITIALIZERS);
828 RECORD(SUBMODULE_EXPORT_AS);
829
830 // Comments Block.
831 BLOCK(COMMENTS_BLOCK);
832 RECORD(COMMENTS_RAW_COMMENT);
833
834 // Decls and Types block.
835 BLOCK(DECLTYPES_BLOCK);
836 RECORD(TYPE_EXT_QUAL);
837 RECORD(TYPE_COMPLEX);
838 RECORD(TYPE_POINTER);
839 RECORD(TYPE_BLOCK_POINTER);
840 RECORD(TYPE_LVALUE_REFERENCE);
841 RECORD(TYPE_RVALUE_REFERENCE);
842 RECORD(TYPE_MEMBER_POINTER);
843 RECORD(TYPE_CONSTANT_ARRAY);
844 RECORD(TYPE_INCOMPLETE_ARRAY);
845 RECORD(TYPE_VARIABLE_ARRAY);
846 RECORD(TYPE_VECTOR);
847 RECORD(TYPE_EXT_VECTOR);
848 RECORD(TYPE_FUNCTION_NO_PROTO);
849 RECORD(TYPE_FUNCTION_PROTO);
850 RECORD(TYPE_TYPEDEF);
851 RECORD(TYPE_TYPEOF_EXPR);
852 RECORD(TYPE_TYPEOF);
853 RECORD(TYPE_RECORD);
854 RECORD(TYPE_ENUM);
855 RECORD(TYPE_OBJC_INTERFACE);
856 RECORD(TYPE_OBJC_OBJECT_POINTER);
857 RECORD(TYPE_DECLTYPE);
858 RECORD(TYPE_ELABORATED);
859 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM);
860 RECORD(TYPE_UNRESOLVED_USING);
861 RECORD(TYPE_INJECTED_CLASS_NAME);
862 RECORD(TYPE_OBJC_OBJECT);
863 RECORD(TYPE_TEMPLATE_TYPE_PARM);
864 RECORD(TYPE_TEMPLATE_SPECIALIZATION);
865 RECORD(TYPE_DEPENDENT_NAME);
866 RECORD(TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION);
867 RECORD(TYPE_DEPENDENT_SIZED_ARRAY);
868 RECORD(TYPE_PAREN);
869 RECORD(TYPE_MACRO_QUALIFIED);
870 RECORD(TYPE_PACK_EXPANSION);
871 RECORD(TYPE_ATTRIBUTED);
872 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK);
873 RECORD(TYPE_AUTO);
874 RECORD(TYPE_UNARY_TRANSFORM);
875 RECORD(TYPE_ATOMIC);
876 RECORD(TYPE_DECAYED);
877 RECORD(TYPE_ADJUSTED);
878 RECORD(TYPE_OBJC_TYPE_PARAM);
879 RECORD(LOCAL_REDECLARATIONS);
880 RECORD(DECL_TYPEDEF);
881 RECORD(DECL_TYPEALIAS);
882 RECORD(DECL_ENUM);
883 RECORD(DECL_RECORD);
884 RECORD(DECL_ENUM_CONSTANT);
885 RECORD(DECL_FUNCTION);
886 RECORD(DECL_OBJC_METHOD);
887 RECORD(DECL_OBJC_INTERFACE);
888 RECORD(DECL_OBJC_PROTOCOL);
889 RECORD(DECL_OBJC_IVAR);
890 RECORD(DECL_OBJC_AT_DEFS_FIELD);
891 RECORD(DECL_OBJC_CATEGORY);
892 RECORD(DECL_OBJC_CATEGORY_IMPL);
893 RECORD(DECL_OBJC_IMPLEMENTATION);
894 RECORD(DECL_OBJC_COMPATIBLE_ALIAS);
895 RECORD(DECL_OBJC_PROPERTY);
896 RECORD(DECL_OBJC_PROPERTY_IMPL);
897 RECORD(DECL_FIELD);
898 RECORD(DECL_MS_PROPERTY);
899 RECORD(DECL_VAR);
900 RECORD(DECL_IMPLICIT_PARAM);
901 RECORD(DECL_PARM_VAR);
902 RECORD(DECL_FILE_SCOPE_ASM);
903 RECORD(DECL_BLOCK);
904 RECORD(DECL_CONTEXT_LEXICAL);
905 RECORD(DECL_CONTEXT_VISIBLE);
906 RECORD(DECL_NAMESPACE);
907 RECORD(DECL_NAMESPACE_ALIAS);
908 RECORD(DECL_USING);
909 RECORD(DECL_USING_SHADOW);
910 RECORD(DECL_USING_DIRECTIVE);
911 RECORD(DECL_UNRESOLVED_USING_VALUE);
912 RECORD(DECL_UNRESOLVED_USING_TYPENAME);
913 RECORD(DECL_LINKAGE_SPEC);
914 RECORD(DECL_CXX_RECORD);
915 RECORD(DECL_CXX_METHOD);
916 RECORD(DECL_CXX_CONSTRUCTOR);
917 RECORD(DECL_CXX_DESTRUCTOR);
918 RECORD(DECL_CXX_CONVERSION);
919 RECORD(DECL_ACCESS_SPEC);
920 RECORD(DECL_FRIEND);
921 RECORD(DECL_FRIEND_TEMPLATE);
922 RECORD(DECL_CLASS_TEMPLATE);
923 RECORD(DECL_CLASS_TEMPLATE_SPECIALIZATION);
924 RECORD(DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION);
925 RECORD(DECL_VAR_TEMPLATE);
926 RECORD(DECL_VAR_TEMPLATE_SPECIALIZATION);
927 RECORD(DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION);
928 RECORD(DECL_FUNCTION_TEMPLATE);
929 RECORD(DECL_TEMPLATE_TYPE_PARM);
930 RECORD(DECL_NON_TYPE_TEMPLATE_PARM);
931 RECORD(DECL_TEMPLATE_TEMPLATE_PARM);
932 RECORD(DECL_CONCEPT);
933 RECORD(DECL_REQUIRES_EXPR_BODY);
934 RECORD(DECL_TYPE_ALIAS_TEMPLATE);
935 RECORD(DECL_STATIC_ASSERT);
936 RECORD(DECL_CXX_BASE_SPECIFIERS);
937 RECORD(DECL_CXX_CTOR_INITIALIZERS);
938 RECORD(DECL_INDIRECTFIELD);
939 RECORD(DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK);
940 RECORD(DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK);
941 RECORD(DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION);
942 RECORD(DECL_IMPORT);
943 RECORD(DECL_OMP_THREADPRIVATE);
944 RECORD(DECL_EMPTY);
945 RECORD(DECL_OBJC_TYPE_PARAM);
946 RECORD(DECL_OMP_CAPTUREDEXPR);
947 RECORD(DECL_PRAGMA_COMMENT);
948 RECORD(DECL_PRAGMA_DETECT_MISMATCH);
949 RECORD(DECL_OMP_DECLARE_REDUCTION);
950 RECORD(DECL_OMP_ALLOCATE);
951
952 // Statements and Exprs can occur in the Decls and Types block.
953 AddStmtsExprs(Stream, Record);
954
955 BLOCK(PREPROCESSOR_DETAIL_BLOCK);
956 RECORD(PPD_MACRO_EXPANSION);
957 RECORD(PPD_MACRO_DEFINITION);
958 RECORD(PPD_INCLUSION_DIRECTIVE);
959
960 // Decls and Types block.
961 BLOCK(EXTENSION_BLOCK);
962 RECORD(EXTENSION_METADATA);
963
964 BLOCK(UNHASHED_CONTROL_BLOCK);
965 RECORD(SIGNATURE);
966 RECORD(AST_BLOCK_HASH);
967 RECORD(DIAGNOSTIC_OPTIONS);
968 RECORD(DIAG_PRAGMA_MAPPINGS);
969
970#undef RECORD
971#undef BLOCK
972 Stream.ExitBlock();
973}
974
975/// Prepares a path for being written to an AST file by converting it
976/// to an absolute path and removing nested './'s.
977///
978/// \return \c true if the path was changed.
979static bool cleanPathForOutput(FileManager &FileMgr,
980 SmallVectorImpl<char> &Path) {
981 bool Changed = FileMgr.makeAbsolutePath(Path);
982 return Changed | llvm::sys::path::remove_dots(Path);
983}
984
985/// Adjusts the given filename to only write out the portion of the
986/// filename that is not part of the system root directory.
987///
988/// \param Filename the file name to adjust.
989///
990/// \param BaseDir When non-NULL, the PCH file is a relocatable AST file and
991/// the returned filename will be adjusted by this root directory.
992///
993/// \returns either the original filename (if it needs no adjustment) or the
994/// adjusted filename (which points into the @p Filename parameter).
995static const char *
996adjustFilenameForRelocatableAST(const char *Filename, StringRef BaseDir) {
997 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 997, __PRETTY_FUNCTION__))
;
998
999 if (BaseDir.empty())
1000 return Filename;
1001
1002 // Verify that the filename and the system root have the same prefix.
1003 unsigned Pos = 0;
1004 for (; Filename[Pos] && Pos < BaseDir.size(); ++Pos)
1005 if (Filename[Pos] != BaseDir[Pos])
1006 return Filename; // Prefixes don't match.
1007
1008 // We hit the end of the filename before we hit the end of the system root.
1009 if (!Filename[Pos])
1010 return Filename;
1011
1012 // If there's not a path separator at the end of the base directory nor
1013 // immediately after it, then this isn't within the base directory.
1014 if (!llvm::sys::path::is_separator(Filename[Pos])) {
1015 if (!llvm::sys::path::is_separator(BaseDir.back()))
1016 return Filename;
1017 } else {
1018 // If the file name has a '/' at the current position, skip over the '/'.
1019 // We distinguish relative paths from absolute paths by the
1020 // absence of '/' at the beginning of relative paths.
1021 //
1022 // FIXME: This is wrong. We distinguish them by asking if the path is
1023 // absolute, which isn't the same thing. And there might be multiple '/'s
1024 // in a row. Use a better mechanism to indicate whether we have emitted an
1025 // absolute or relative path.
1026 ++Pos;
1027 }
1028
1029 return Filename + Pos;
1030}
1031
1032std::pair<ASTFileSignature, ASTFileSignature>
1033ASTWriter::createSignature(StringRef AllBytes, StringRef ASTBlockBytes) {
1034 llvm::SHA1 Hasher;
1035 Hasher.update(ASTBlockBytes);
1036 auto Hash = Hasher.result();
1037 ASTFileSignature ASTBlockHash = ASTFileSignature::create(Hash);
1038
1039 // Add the remaining bytes (i.e. bytes before the unhashed control block that
1040 // are not part of the AST block).
1041 Hasher.update(
1042 AllBytes.take_front(ASTBlockBytes.bytes_end() - AllBytes.bytes_begin()));
1043 Hasher.update(
1044 AllBytes.take_back(AllBytes.bytes_end() - ASTBlockBytes.bytes_end()));
1045 Hash = Hasher.result();
1046 ASTFileSignature Signature = ASTFileSignature::create(Hash);
1047
1048 return std::make_pair(ASTBlockHash, Signature);
1049}
1050
1051ASTFileSignature ASTWriter::writeUnhashedControlBlock(Preprocessor &PP,
1052 ASTContext &Context) {
1053 // Flush first to prepare the PCM hash (signature).
1054 Stream.FlushToWord();
1055 auto StartOfUnhashedControl = Stream.GetCurrentBitNo() >> 3;
1056
1057 // Enter the block and prepare to write records.
1058 RecordData Record;
1059 Stream.EnterSubblock(UNHASHED_CONTROL_BLOCK_ID, 5);
1060
1061 // For implicit modules, write the hash of the PCM as its signature.
1062 ASTFileSignature Signature;
1063 if (WritingModule &&
1064 PP.getHeaderSearchInfo().getHeaderSearchOpts().ModulesHashContent) {
1065 ASTFileSignature ASTBlockHash;
1066 auto ASTBlockStartByte = ASTBlockRange.first >> 3;
1067 auto ASTBlockByteLength = (ASTBlockRange.second >> 3) - ASTBlockStartByte;
1068 std::tie(ASTBlockHash, Signature) = createSignature(
1069 StringRef(Buffer.begin(), StartOfUnhashedControl),
1070 StringRef(Buffer.begin() + ASTBlockStartByte, ASTBlockByteLength));
1071
1072 Record.append(ASTBlockHash.begin(), ASTBlockHash.end());
1073 Stream.EmitRecord(AST_BLOCK_HASH, Record);
1074 Record.clear();
1075 Record.append(Signature.begin(), Signature.end());
1076 Stream.EmitRecord(SIGNATURE, Record);
1077 Record.clear();
1078 }
1079
1080 // Diagnostic options.
1081 const auto &Diags = Context.getDiagnostics();
1082 const DiagnosticOptions &DiagOpts = Diags.getDiagnosticOptions();
1083#define DIAGOPT(Name, Bits, Default) Record.push_back(DiagOpts.Name);
1084#define ENUM_DIAGOPT(Name, Type, Bits, Default) \
1085 Record.push_back(static_cast<unsigned>(DiagOpts.get##Name()));
1086#include "clang/Basic/DiagnosticOptions.def"
1087 Record.push_back(DiagOpts.Warnings.size());
1088 for (unsigned I = 0, N = DiagOpts.Warnings.size(); I != N; ++I)
1089 AddString(DiagOpts.Warnings[I], Record);
1090 Record.push_back(DiagOpts.Remarks.size());
1091 for (unsigned I = 0, N = DiagOpts.Remarks.size(); I != N; ++I)
1092 AddString(DiagOpts.Remarks[I], Record);
1093 // Note: we don't serialize the log or serialization file names, because they
1094 // are generally transient files and will almost always be overridden.
1095 Stream.EmitRecord(DIAGNOSTIC_OPTIONS, Record);
1096
1097 // Write out the diagnostic/pragma mappings.
1098 WritePragmaDiagnosticMappings(Diags, /* isModule = */ WritingModule);
1099
1100 // Leave the options block.
1101 Stream.ExitBlock();
1102 return Signature;
1103}
1104
1105/// Write the control block.
1106void ASTWriter::WriteControlBlock(Preprocessor &PP, ASTContext &Context,
1107 StringRef isysroot,
1108 const std::string &OutputFile) {
1109 using namespace llvm;
1110
1111 Stream.EnterSubblock(CONTROL_BLOCK_ID, 5);
1112 RecordData Record;
1113
1114 // Metadata
1115 auto MetadataAbbrev = std::make_shared<BitCodeAbbrev>();
1116 MetadataAbbrev->Add(BitCodeAbbrevOp(METADATA));
1117 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Major
1118 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Minor
1119 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang maj.
1120 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang min.
1121 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Relocatable
1122 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Timestamps
1123 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Errors
1124 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // SVN branch/tag
1125 unsigned MetadataAbbrevCode = Stream.EmitAbbrev(std::move(MetadataAbbrev));
1126 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 1127, __PRETTY_FUNCTION__))
1127 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 1127, __PRETTY_FUNCTION__))
;
1128 {
1129 RecordData::value_type Record[] = {
1130 METADATA,
1131 VERSION_MAJOR,
1132 VERSION_MINOR,
1133 CLANG_VERSION_MAJOR13,
1134 CLANG_VERSION_MINOR0,
1135 !isysroot.empty(),
1136 IncludeTimestamps,
1137 ASTHasCompilerErrors};
1138 Stream.EmitRecordWithBlob(MetadataAbbrevCode, Record,
1139 getClangFullRepositoryVersion());
1140 }
1141
1142 if (WritingModule) {
1143 // Module name
1144 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1145 Abbrev->Add(BitCodeAbbrevOp(MODULE_NAME));
1146 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
1147 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1148 RecordData::value_type Record[] = {MODULE_NAME};
1149 Stream.EmitRecordWithBlob(AbbrevCode, Record, WritingModule->Name);
1150 }
1151
1152 if (WritingModule && WritingModule->Directory) {
1153 SmallString<128> BaseDir(WritingModule->Directory->getName());
1154 cleanPathForOutput(Context.getSourceManager().getFileManager(), BaseDir);
1155
1156 // If the home of the module is the current working directory, then we
1157 // want to pick up the cwd of the build process loading the module, not
1158 // our cwd, when we load this module.
1159 if (!PP.getHeaderSearchInfo()
1160 .getHeaderSearchOpts()
1161 .ModuleMapFileHomeIsCwd ||
1162 WritingModule->Directory->getName() != StringRef(".")) {
1163 // Module directory.
1164 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1165 Abbrev->Add(BitCodeAbbrevOp(MODULE_DIRECTORY));
1166 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Directory
1167 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1168
1169 RecordData::value_type Record[] = {MODULE_DIRECTORY};
1170 Stream.EmitRecordWithBlob(AbbrevCode, Record, BaseDir);
1171 }
1172
1173 // Write out all other paths relative to the base directory if possible.
1174 BaseDirectory.assign(BaseDir.begin(), BaseDir.end());
1175 } else if (!isysroot.empty()) {
1176 // Write out paths relative to the sysroot if possible.
1177 BaseDirectory = std::string(isysroot);
1178 }
1179
1180 // Module map file
1181 if (WritingModule && WritingModule->Kind == Module::ModuleMapModule) {
1182 Record.clear();
1183
1184 auto &Map = PP.getHeaderSearchInfo().getModuleMap();
1185 AddPath(WritingModule->PresumedModuleMapFile.empty()
1186 ? Map.getModuleMapFileForUniquing(WritingModule)->getName()
1187 : StringRef(WritingModule->PresumedModuleMapFile),
1188 Record);
1189
1190 // Additional module map files.
1191 if (auto *AdditionalModMaps =
1192 Map.getAdditionalModuleMapFiles(WritingModule)) {
1193 Record.push_back(AdditionalModMaps->size());
1194 for (const FileEntry *F : *AdditionalModMaps)
1195 AddPath(F->getName(), Record);
1196 } else {
1197 Record.push_back(0);
1198 }
1199
1200 Stream.EmitRecord(MODULE_MAP_FILE, Record);
1201 }
1202
1203 // Imports
1204 if (Chain) {
1205 serialization::ModuleManager &Mgr = Chain->getModuleManager();
1206 Record.clear();
1207
1208 for (ModuleFile &M : Mgr) {
1209 // Skip modules that weren't directly imported.
1210 if (!M.isDirectlyImported())
1211 continue;
1212
1213 Record.push_back((unsigned)M.Kind); // FIXME: Stable encoding
1214 AddSourceLocation(M.ImportLoc, Record);
1215
1216 // If we have calculated signature, there is no need to store
1217 // the size or timestamp.
1218 Record.push_back(M.Signature ? 0 : M.File->getSize());
1219 Record.push_back(M.Signature ? 0 : getTimestampForOutput(M.File));
1220
1221 for (auto I : M.Signature)
1222 Record.push_back(I);
1223
1224 AddString(M.ModuleName, Record);
1225 AddPath(M.FileName, Record);
1226 }
1227 Stream.EmitRecord(IMPORTS, Record);
1228 }
1229
1230 // Write the options block.
1231 Stream.EnterSubblock(OPTIONS_BLOCK_ID, 4);
1232
1233 // Language options.
1234 Record.clear();
1235 const LangOptions &LangOpts = Context.getLangOpts();
1236#define LANGOPT(Name, Bits, Default, Description) \
1237 Record.push_back(LangOpts.Name);
1238#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1239 Record.push_back(static_cast<unsigned>(LangOpts.get##Name()));
1240#include "clang/Basic/LangOptions.def"
1241#define SANITIZER(NAME, ID) \
1242 Record.push_back(LangOpts.Sanitize.has(SanitizerKind::ID));
1243#include "clang/Basic/Sanitizers.def"
1244
1245 Record.push_back(LangOpts.ModuleFeatures.size());
1246 for (StringRef Feature : LangOpts.ModuleFeatures)
1247 AddString(Feature, Record);
1248
1249 Record.push_back((unsigned) LangOpts.ObjCRuntime.getKind());
1250 AddVersionTuple(LangOpts.ObjCRuntime.getVersion(), Record);
1251
1252 AddString(LangOpts.CurrentModule, Record);
1253
1254 // Comment options.
1255 Record.push_back(LangOpts.CommentOpts.BlockCommandNames.size());
1256 for (const auto &I : LangOpts.CommentOpts.BlockCommandNames) {
1257 AddString(I, Record);
1258 }
1259 Record.push_back(LangOpts.CommentOpts.ParseAllComments);
1260
1261 // OpenMP offloading options.
1262 Record.push_back(LangOpts.OMPTargetTriples.size());
1263 for (auto &T : LangOpts.OMPTargetTriples)
1264 AddString(T.getTriple(), Record);
1265
1266 AddString(LangOpts.OMPHostIRFile, Record);
1267
1268 Stream.EmitRecord(LANGUAGE_OPTIONS, Record);
1269
1270 // Target options.
1271 Record.clear();
1272 const TargetInfo &Target = Context.getTargetInfo();
1273 const TargetOptions &TargetOpts = Target.getTargetOpts();
1274 AddString(TargetOpts.Triple, Record);
1275 AddString(TargetOpts.CPU, Record);
1276 AddString(TargetOpts.TuneCPU, Record);
1277 AddString(TargetOpts.ABI, Record);
1278 Record.push_back(TargetOpts.FeaturesAsWritten.size());
1279 for (unsigned I = 0, N = TargetOpts.FeaturesAsWritten.size(); I != N; ++I) {
1280 AddString(TargetOpts.FeaturesAsWritten[I], Record);
1281 }
1282 Record.push_back(TargetOpts.Features.size());
1283 for (unsigned I = 0, N = TargetOpts.Features.size(); I != N; ++I) {
1284 AddString(TargetOpts.Features[I], Record);
1285 }
1286 Stream.EmitRecord(TARGET_OPTIONS, Record);
1287
1288 // File system options.
1289 Record.clear();
1290 const FileSystemOptions &FSOpts =
1291 Context.getSourceManager().getFileManager().getFileSystemOpts();
1292 AddString(FSOpts.WorkingDir, Record);
1293 Stream.EmitRecord(FILE_SYSTEM_OPTIONS, Record);
1294
1295 // Header search options.
1296 Record.clear();
1297 const HeaderSearchOptions &HSOpts
1298 = PP.getHeaderSearchInfo().getHeaderSearchOpts();
1299 AddString(HSOpts.Sysroot, Record);
1300
1301 // Include entries.
1302 Record.push_back(HSOpts.UserEntries.size());
1303 for (unsigned I = 0, N = HSOpts.UserEntries.size(); I != N; ++I) {
1304 const HeaderSearchOptions::Entry &Entry = HSOpts.UserEntries[I];
1305 AddString(Entry.Path, Record);
1306 Record.push_back(static_cast<unsigned>(Entry.Group));
1307 Record.push_back(Entry.IsFramework);
1308 Record.push_back(Entry.IgnoreSysRoot);
1309 }
1310
1311 // System header prefixes.
1312 Record.push_back(HSOpts.SystemHeaderPrefixes.size());
1313 for (unsigned I = 0, N = HSOpts.SystemHeaderPrefixes.size(); I != N; ++I) {
1314 AddString(HSOpts.SystemHeaderPrefixes[I].Prefix, Record);
1315 Record.push_back(HSOpts.SystemHeaderPrefixes[I].IsSystemHeader);
1316 }
1317
1318 AddString(HSOpts.ResourceDir, Record);
1319 AddString(HSOpts.ModuleCachePath, Record);
1320 AddString(HSOpts.ModuleUserBuildPath, Record);
1321 Record.push_back(HSOpts.DisableModuleHash);
1322 Record.push_back(HSOpts.ImplicitModuleMaps);
1323 Record.push_back(HSOpts.ModuleMapFileHomeIsCwd);
1324 Record.push_back(HSOpts.EnablePrebuiltImplicitModules);
1325 Record.push_back(HSOpts.UseBuiltinIncludes);
1326 Record.push_back(HSOpts.UseStandardSystemIncludes);
1327 Record.push_back(HSOpts.UseStandardCXXIncludes);
1328 Record.push_back(HSOpts.UseLibcxx);
1329 // Write out the specific module cache path that contains the module files.
1330 AddString(PP.getHeaderSearchInfo().getModuleCachePath(), Record);
1331 Stream.EmitRecord(HEADER_SEARCH_OPTIONS, Record);
1332
1333 // Preprocessor options.
1334 Record.clear();
1335 const PreprocessorOptions &PPOpts = PP.getPreprocessorOpts();
1336
1337 // Macro definitions.
1338 Record.push_back(PPOpts.Macros.size());
1339 for (unsigned I = 0, N = PPOpts.Macros.size(); I != N; ++I) {
1340 AddString(PPOpts.Macros[I].first, Record);
1341 Record.push_back(PPOpts.Macros[I].second);
1342 }
1343
1344 // Includes
1345 Record.push_back(PPOpts.Includes.size());
1346 for (unsigned I = 0, N = PPOpts.Includes.size(); I != N; ++I)
1347 AddString(PPOpts.Includes[I], Record);
1348
1349 // Macro includes
1350 Record.push_back(PPOpts.MacroIncludes.size());
1351 for (unsigned I = 0, N = PPOpts.MacroIncludes.size(); I != N; ++I)
1352 AddString(PPOpts.MacroIncludes[I], Record);
1353
1354 Record.push_back(PPOpts.UsePredefines);
1355 // Detailed record is important since it is used for the module cache hash.
1356 Record.push_back(PPOpts.DetailedRecord);
1357 AddString(PPOpts.ImplicitPCHInclude, Record);
1358 Record.push_back(static_cast<unsigned>(PPOpts.ObjCXXARCStandardLibrary));
1359 Stream.EmitRecord(PREPROCESSOR_OPTIONS, Record);
1360
1361 // Leave the options block.
1362 Stream.ExitBlock();
1363
1364 // Original file name and file ID
1365 SourceManager &SM = Context.getSourceManager();
1366 if (const FileEntry *MainFile = SM.getFileEntryForID(SM.getMainFileID())) {
1367 auto FileAbbrev = std::make_shared<BitCodeAbbrev>();
1368 FileAbbrev->Add(BitCodeAbbrevOp(ORIGINAL_FILE));
1369 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // File ID
1370 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1371 unsigned FileAbbrevCode = Stream.EmitAbbrev(std::move(FileAbbrev));
1372
1373 Record.clear();
1374 Record.push_back(ORIGINAL_FILE);
1375 Record.push_back(SM.getMainFileID().getOpaqueValue());
1376 EmitRecordWithPath(FileAbbrevCode, Record, MainFile->getName());
1377 }
1378
1379 Record.clear();
1380 Record.push_back(SM.getMainFileID().getOpaqueValue());
1381 Stream.EmitRecord(ORIGINAL_FILE_ID, Record);
1382
1383 // Original PCH directory
1384 if (!OutputFile.empty() && OutputFile != "-") {
1385 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1386 Abbrev->Add(BitCodeAbbrevOp(ORIGINAL_PCH_DIR));
1387 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1388 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1389
1390 SmallString<128> OutputPath(OutputFile);
1391
1392 SM.getFileManager().makeAbsolutePath(OutputPath);
1393 StringRef origDir = llvm::sys::path::parent_path(OutputPath);
1394
1395 RecordData::value_type Record[] = {ORIGINAL_PCH_DIR};
1396 Stream.EmitRecordWithBlob(AbbrevCode, Record, origDir);
1397 }
1398
1399 WriteInputFiles(Context.SourceMgr,
1400 PP.getHeaderSearchInfo().getHeaderSearchOpts(),
1401 PP.getLangOpts().Modules);
1402 Stream.ExitBlock();
1403}
1404
1405namespace {
1406
1407/// An input file.
1408struct InputFileEntry {
1409 const FileEntry *File;
1410 bool IsSystemFile;
1411 bool IsTransient;
1412 bool BufferOverridden;
1413 bool IsTopLevelModuleMap;
1414 uint32_t ContentHash[2];
1415};
1416
1417} // namespace
1418
1419void ASTWriter::WriteInputFiles(SourceManager &SourceMgr,
1420 HeaderSearchOptions &HSOpts,
1421 bool Modules) {
1422 using namespace llvm;
1423
1424 Stream.EnterSubblock(INPUT_FILES_BLOCK_ID, 4);
1425
1426 // Create input-file abbreviation.
1427 auto IFAbbrev = std::make_shared<BitCodeAbbrev>();
1428 IFAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE));
1429 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
1430 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 12)); // Size
1431 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // Modification time
1432 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Overridden
1433 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Transient
1434 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Module map
1435 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1436 unsigned IFAbbrevCode = Stream.EmitAbbrev(std::move(IFAbbrev));
1437
1438 // Create input file hash abbreviation.
1439 auto IFHAbbrev = std::make_shared<BitCodeAbbrev>();
1440 IFHAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE_HASH));
1441 IFHAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1442 IFHAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1443 unsigned IFHAbbrevCode = Stream.EmitAbbrev(std::move(IFHAbbrev));
1444
1445 // Get all ContentCache objects for files, sorted by whether the file is a
1446 // system one or not. System files go at the back, users files at the front.
1447 std::deque<InputFileEntry> SortedFiles;
1448 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size(); I != N; ++I) {
1449 // Get this source location entry.
1450 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
1451 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 1451, __PRETTY_FUNCTION__))
;
1452
1453 // We only care about file entries that were not overridden.
1454 if (!SLoc->isFile())
1455 continue;
1456 const SrcMgr::FileInfo &File = SLoc->getFile();
1457 const SrcMgr::ContentCache *Cache = &File.getContentCache();
1458 if (!Cache->OrigEntry)
1459 continue;
1460
1461 InputFileEntry Entry;
1462 Entry.File = Cache->OrigEntry;
1463 Entry.IsSystemFile = isSystem(File.getFileCharacteristic());
1464 Entry.IsTransient = Cache->IsTransient;
1465 Entry.BufferOverridden = Cache->BufferOverridden;
1466 Entry.IsTopLevelModuleMap = isModuleMap(File.getFileCharacteristic()) &&
1467 File.getIncludeLoc().isInvalid();
1468
1469 auto ContentHash = hash_code(-1);
1470 if (PP->getHeaderSearchInfo()
1471 .getHeaderSearchOpts()
1472 .ValidateASTInputFilesContent) {
1473 auto MemBuff = Cache->getBufferIfLoaded();
1474 if (MemBuff)
1475 ContentHash = hash_value(MemBuff->getBuffer());
1476 else
1477 // FIXME: The path should be taken from the FileEntryRef.
1478 PP->Diag(SourceLocation(), diag::err_module_unable_to_hash_content)
1479 << Entry.File->getName();
1480 }
1481 auto CH = llvm::APInt(64, ContentHash);
1482 Entry.ContentHash[0] =
1483 static_cast<uint32_t>(CH.getLoBits(32).getZExtValue());
1484 Entry.ContentHash[1] =
1485 static_cast<uint32_t>(CH.getHiBits(32).getZExtValue());
1486
1487 if (Entry.IsSystemFile)
1488 SortedFiles.push_back(Entry);
1489 else
1490 SortedFiles.push_front(Entry);
1491 }
1492
1493 unsigned UserFilesNum = 0;
1494 // Write out all of the input files.
1495 std::vector<uint64_t> InputFileOffsets;
1496 for (const auto &Entry : SortedFiles) {
1497 uint32_t &InputFileID = InputFileIDs[Entry.File];
1498 if (InputFileID != 0)
1499 continue; // already recorded this file.
1500
1501 // Record this entry's offset.
1502 InputFileOffsets.push_back(Stream.GetCurrentBitNo());
1503
1504 InputFileID = InputFileOffsets.size();
1505
1506 if (!Entry.IsSystemFile)
1507 ++UserFilesNum;
1508
1509 // Emit size/modification time for this file.
1510 // And whether this file was overridden.
1511 {
1512 RecordData::value_type Record[] = {
1513 INPUT_FILE,
1514 InputFileOffsets.size(),
1515 (uint64_t)Entry.File->getSize(),
1516 (uint64_t)getTimestampForOutput(Entry.File),
1517 Entry.BufferOverridden,
1518 Entry.IsTransient,
1519 Entry.IsTopLevelModuleMap};
1520
1521 // FIXME: The path should be taken from the FileEntryRef.
1522 EmitRecordWithPath(IFAbbrevCode, Record, Entry.File->getName());
1523 }
1524
1525 // Emit content hash for this file.
1526 {
1527 RecordData::value_type Record[] = {INPUT_FILE_HASH, Entry.ContentHash[0],
1528 Entry.ContentHash[1]};
1529 Stream.EmitRecordWithAbbrev(IFHAbbrevCode, Record);
1530 }
1531 }
1532
1533 Stream.ExitBlock();
1534
1535 // Create input file offsets abbreviation.
1536 auto OffsetsAbbrev = std::make_shared<BitCodeAbbrev>();
1537 OffsetsAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE_OFFSETS));
1538 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # input files
1539 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # non-system
1540 // input files
1541 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Array
1542 unsigned OffsetsAbbrevCode = Stream.EmitAbbrev(std::move(OffsetsAbbrev));
1543
1544 // Write input file offsets.
1545 RecordData::value_type Record[] = {INPUT_FILE_OFFSETS,
1546 InputFileOffsets.size(), UserFilesNum};
1547 Stream.EmitRecordWithBlob(OffsetsAbbrevCode, Record, bytes(InputFileOffsets));
1548}
1549
1550//===----------------------------------------------------------------------===//
1551// Source Manager Serialization
1552//===----------------------------------------------------------------------===//
1553
1554/// Create an abbreviation for the SLocEntry that refers to a
1555/// file.
1556static unsigned CreateSLocFileAbbrev(llvm::BitstreamWriter &Stream) {
1557 using namespace llvm;
1558
1559 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1560 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_FILE_ENTRY));
1561 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1562 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1563 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1564 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1565 // FileEntry fields.
1566 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Input File ID
1567 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumCreatedFIDs
1568 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 24)); // FirstDeclIndex
1569 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumDecls
1570 return Stream.EmitAbbrev(std::move(Abbrev));
1571}
1572
1573/// Create an abbreviation for the SLocEntry that refers to a
1574/// buffer.
1575static unsigned CreateSLocBufferAbbrev(llvm::BitstreamWriter &Stream) {
1576 using namespace llvm;
1577
1578 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1579 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_BUFFER_ENTRY));
1580 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1581 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1582 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1583 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1584 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Buffer name blob
1585 return Stream.EmitAbbrev(std::move(Abbrev));
1586}
1587
1588/// Create an abbreviation for the SLocEntry that refers to a
1589/// buffer's blob.
1590static unsigned CreateSLocBufferBlobAbbrev(llvm::BitstreamWriter &Stream,
1591 bool Compressed) {
1592 using namespace llvm;
1593
1594 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1595 Abbrev->Add(BitCodeAbbrevOp(Compressed ? SM_SLOC_BUFFER_BLOB_COMPRESSED
1596 : SM_SLOC_BUFFER_BLOB));
1597 if (Compressed)
1598 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Uncompressed size
1599 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Blob
1600 return Stream.EmitAbbrev(std::move(Abbrev));
1601}
1602
1603/// Create an abbreviation for the SLocEntry that refers to a macro
1604/// expansion.
1605static unsigned CreateSLocExpansionAbbrev(llvm::BitstreamWriter &Stream) {
1606 using namespace llvm;
1607
1608 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1609 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_EXPANSION_ENTRY));
1610 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1611 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Spelling location
1612 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Start location
1613 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // End location
1614 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Is token range
1615 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Token length
1616 return Stream.EmitAbbrev(std::move(Abbrev));
1617}
1618
1619/// Emit key length and data length as ULEB-encoded data, and return them as a
1620/// pair.
1621static std::pair<unsigned, unsigned>
1622emitULEBKeyDataLength(unsigned KeyLen, unsigned DataLen, raw_ostream &Out) {
1623 llvm::encodeULEB128(KeyLen, Out);
1624 llvm::encodeULEB128(DataLen, Out);
1625 return std::make_pair(KeyLen, DataLen);
1626}
1627
1628namespace {
1629
1630 // Trait used for the on-disk hash table of header search information.
1631 class HeaderFileInfoTrait {
1632 ASTWriter &Writer;
1633
1634 // Keep track of the framework names we've used during serialization.
1635 SmallString<128> FrameworkStringData;
1636 llvm::StringMap<unsigned> FrameworkNameOffset;
1637
1638 public:
1639 HeaderFileInfoTrait(ASTWriter &Writer) : Writer(Writer) {}
1640
1641 struct key_type {
1642 StringRef Filename;
1643 off_t Size;
1644 time_t ModTime;
1645 };
1646 using key_type_ref = const key_type &;
1647
1648 using UnresolvedModule =
1649 llvm::PointerIntPair<Module *, 2, ModuleMap::ModuleHeaderRole>;
1650
1651 struct data_type {
1652 const HeaderFileInfo &HFI;
1653 ArrayRef<ModuleMap::KnownHeader> KnownHeaders;
1654 UnresolvedModule Unresolved;
1655 };
1656 using data_type_ref = const data_type &;
1657
1658 using hash_value_type = unsigned;
1659 using offset_type = unsigned;
1660
1661 hash_value_type ComputeHash(key_type_ref key) {
1662 // The hash is based only on size/time of the file, so that the reader can
1663 // match even when symlinking or excess path elements ("foo/../", "../")
1664 // change the form of the name. However, complete path is still the key.
1665 return llvm::hash_combine(key.Size, key.ModTime);
1666 }
1667
1668 std::pair<unsigned, unsigned>
1669 EmitKeyDataLength(raw_ostream& Out, key_type_ref key, data_type_ref Data) {
1670 unsigned KeyLen = key.Filename.size() + 1 + 8 + 8;
1671 unsigned DataLen = 1 + 2 + 4 + 4;
1672 for (auto ModInfo : Data.KnownHeaders)
1673 if (Writer.getLocalOrImportedSubmoduleID(ModInfo.getModule()))
1674 DataLen += 4;
1675 if (Data.Unresolved.getPointer())
1676 DataLen += 4;
1677 return emitULEBKeyDataLength(KeyLen, DataLen, Out);
1678 }
1679
1680 void EmitKey(raw_ostream& Out, key_type_ref key, unsigned KeyLen) {
1681 using namespace llvm::support;
1682
1683 endian::Writer LE(Out, little);
1684 LE.write<uint64_t>(key.Size);
1685 KeyLen -= 8;
1686 LE.write<uint64_t>(key.ModTime);
1687 KeyLen -= 8;
1688 Out.write(key.Filename.data(), KeyLen);
1689 }
1690
1691 void EmitData(raw_ostream &Out, key_type_ref key,
1692 data_type_ref Data, unsigned DataLen) {
1693 using namespace llvm::support;
1694
1695 endian::Writer LE(Out, little);
1696 uint64_t Start = Out.tell(); (void)Start;
1697
1698 unsigned char Flags = (Data.HFI.isImport << 5)
1699 | (Data.HFI.isPragmaOnce << 4)
1700 | (Data.HFI.DirInfo << 1)
1701 | Data.HFI.IndexHeaderMapHeader;
1702 LE.write<uint8_t>(Flags);
1703 LE.write<uint16_t>(Data.HFI.NumIncludes);
1704
1705 if (!Data.HFI.ControllingMacro)
1706 LE.write<uint32_t>(Data.HFI.ControllingMacroID);
1707 else
1708 LE.write<uint32_t>(Writer.getIdentifierRef(Data.HFI.ControllingMacro));
1709
1710 unsigned Offset = 0;
1711 if (!Data.HFI.Framework.empty()) {
1712 // If this header refers into a framework, save the framework name.
1713 llvm::StringMap<unsigned>::iterator Pos
1714 = FrameworkNameOffset.find(Data.HFI.Framework);
1715 if (Pos == FrameworkNameOffset.end()) {
1716 Offset = FrameworkStringData.size() + 1;
1717 FrameworkStringData.append(Data.HFI.Framework);
1718 FrameworkStringData.push_back(0);
1719
1720 FrameworkNameOffset[Data.HFI.Framework] = Offset;
1721 } else
1722 Offset = Pos->second;
1723 }
1724 LE.write<uint32_t>(Offset);
1725
1726 auto EmitModule = [&](Module *M, ModuleMap::ModuleHeaderRole Role) {
1727 if (uint32_t ModID = Writer.getLocalOrImportedSubmoduleID(M)) {
1728 uint32_t Value = (ModID << 2) | (unsigned)Role;
1729 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 1729, __PRETTY_FUNCTION__))
;
1730 LE.write<uint32_t>(Value);
1731 }
1732 };
1733
1734 // FIXME: If the header is excluded, we should write out some
1735 // record of that fact.
1736 for (auto ModInfo : Data.KnownHeaders)
1737 EmitModule(ModInfo.getModule(), ModInfo.getRole());
1738 if (Data.Unresolved.getPointer())
1739 EmitModule(Data.Unresolved.getPointer(), Data.Unresolved.getInt());
1740
1741 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 1741, __PRETTY_FUNCTION__))
;
1742 }
1743
1744 const char *strings_begin() const { return FrameworkStringData.begin(); }
1745 const char *strings_end() const { return FrameworkStringData.end(); }
1746 };
1747
1748} // namespace
1749
1750/// Write the header search block for the list of files that
1751///
1752/// \param HS The header search structure to save.
1753void ASTWriter::WriteHeaderSearch(const HeaderSearch &HS) {
1754 HeaderFileInfoTrait GeneratorTrait(*this);
1755 llvm::OnDiskChainedHashTableGenerator<HeaderFileInfoTrait> Generator;
1756 SmallVector<const char *, 4> SavedStrings;
1757 unsigned NumHeaderSearchEntries = 0;
1758
1759 // Find all unresolved headers for the current module. We generally will
1760 // have resolved them before we get here, but not necessarily: we might be
1761 // compiling a preprocessed module, where there is no requirement for the
1762 // original files to exist any more.
1763 const HeaderFileInfo Empty; // So we can take a reference.
1764 if (WritingModule) {
1
Assuming field 'WritingModule' is non-null
2
Taking true branch
1765 llvm::SmallVector<Module *, 16> Worklist(1, WritingModule);
1766 while (!Worklist.empty()) {
3
Loop condition is true. Entering loop body
1767 Module *M = Worklist.pop_back_val();
1768 // We don't care about headers in unimportable submodules.
1769 if (M->isUnimportable())
4
Assuming the condition is false
5
Taking false branch
1770 continue;
1771
1772 // Map to disk files where possible, to pick up any missing stat
1773 // information. This also means we don't need to check the unresolved
1774 // headers list when emitting resolved headers in the first loop below.
1775 // FIXME: It'd be preferable to avoid doing this if we were given
1776 // sufficient stat information in the module map.
1777 HS.getModuleMap().resolveHeaderDirectives(M);
1778
1779 // If the file didn't exist, we can still create a module if we were given
1780 // enough information in the module map.
1781 for (auto U : M->MissingHeaders) {
6
Assuming '__begin3' is not equal to '__end3'
1782 // Check that we were given enough information to build a module
1783 // without this file existing on disk.
1784 if (!U.Size || (!U.ModTime && IncludeTimestamps)) {
7
Assuming the condition is false
8
Assuming the condition is false
1785 PP->Diag(U.FileNameLoc, diag::err_module_no_size_mtime_for_header)
1786 << WritingModule->getFullModuleName() << U.Size.hasValue()
1787 << U.FileName;
1788 continue;
1789 }
1790
1791 // Form the effective relative pathname for the file.
1792 SmallString<128> Filename(M->Directory->getName());
1793 llvm::sys::path::append(Filename, U.FileName);
1794 PreparePathForOutput(Filename);
1795
1796 StringRef FilenameDup = strdup(Filename.c_str());
9
Memory is allocated
10
Potential memory leak
1797 SavedStrings.push_back(FilenameDup.data());
1798
1799 HeaderFileInfoTrait::key_type Key = {
1800 FilenameDup, *U.Size, IncludeTimestamps ? *U.ModTime : 0
1801 };
1802 HeaderFileInfoTrait::data_type Data = {
1803 Empty, {}, {M, ModuleMap::headerKindToRole(U.Kind)}
1804 };
1805 // FIXME: Deal with cases where there are multiple unresolved header
1806 // directives in different submodules for the same header.
1807 Generator.insert(Key, Data, GeneratorTrait);
1808 ++NumHeaderSearchEntries;
1809 }
1810
1811 Worklist.append(M->submodule_begin(), M->submodule_end());
1812 }
1813 }
1814
1815 SmallVector<const FileEntry *, 16> FilesByUID;
1816 HS.getFileMgr().GetUniqueIDMapping(FilesByUID);
1817
1818 if (FilesByUID.size() > HS.header_file_size())
1819 FilesByUID.resize(HS.header_file_size());
1820
1821 for (unsigned UID = 0, LastUID = FilesByUID.size(); UID != LastUID; ++UID) {
1822 const FileEntry *File = FilesByUID[UID];
1823 if (!File)
1824 continue;
1825
1826 // Get the file info. This will load info from the external source if
1827 // necessary. Skip emitting this file if we have no information on it
1828 // as a header file (in which case HFI will be null) or if it hasn't
1829 // changed since it was loaded. Also skip it if it's for a modular header
1830 // from a different module; in that case, we rely on the module(s)
1831 // containing the header to provide this information.
1832 const HeaderFileInfo *HFI =
1833 HS.getExistingFileInfo(File, /*WantExternal*/!Chain);
1834 if (!HFI || (HFI->isModuleHeader && !HFI->isCompilingModuleHeader))
1835 continue;
1836
1837 // Massage the file path into an appropriate form.
1838 StringRef Filename = File->getName();
1839 SmallString<128> FilenameTmp(Filename);
1840 if (PreparePathForOutput(FilenameTmp)) {
1841 // If we performed any translation on the file name at all, we need to
1842 // save this string, since the generator will refer to it later.
1843 Filename = StringRef(strdup(FilenameTmp.c_str()));
1844 SavedStrings.push_back(Filename.data());
1845 }
1846
1847 HeaderFileInfoTrait::key_type Key = {
1848 Filename, File->getSize(), getTimestampForOutput(File)
1849 };
1850 HeaderFileInfoTrait::data_type Data = {
1851 *HFI, HS.getModuleMap().findResolvedModulesForHeader(File), {}
1852 };
1853 Generator.insert(Key, Data, GeneratorTrait);
1854 ++NumHeaderSearchEntries;
1855 }
1856
1857 // Create the on-disk hash table in a buffer.
1858 SmallString<4096> TableData;
1859 uint32_t BucketOffset;
1860 {
1861 using namespace llvm::support;
1862
1863 llvm::raw_svector_ostream Out(TableData);
1864 // Make sure that no bucket is at offset 0
1865 endian::write<uint32_t>(Out, 0, little);
1866 BucketOffset = Generator.Emit(Out, GeneratorTrait);
1867 }
1868
1869 // Create a blob abbreviation
1870 using namespace llvm;
1871
1872 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1873 Abbrev->Add(BitCodeAbbrevOp(HEADER_SEARCH_TABLE));
1874 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1875 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1876 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
1877 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
1878 unsigned TableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
1879
1880 // Write the header search table
1881 RecordData::value_type Record[] = {HEADER_SEARCH_TABLE, BucketOffset,
1882 NumHeaderSearchEntries, TableData.size()};
1883 TableData.append(GeneratorTrait.strings_begin(),GeneratorTrait.strings_end());
1884 Stream.EmitRecordWithBlob(TableAbbrev, Record, TableData);
1885
1886 // Free all of the strings we had to duplicate.
1887 for (unsigned I = 0, N = SavedStrings.size(); I != N; ++I)
1888 free(const_cast<char *>(SavedStrings[I]));
1889}
1890
1891static void emitBlob(llvm::BitstreamWriter &Stream, StringRef Blob,
1892 unsigned SLocBufferBlobCompressedAbbrv,
1893 unsigned SLocBufferBlobAbbrv) {
1894 using RecordDataType = ASTWriter::RecordData::value_type;
1895
1896 // Compress the buffer if possible. We expect that almost all PCM
1897 // consumers will not want its contents.
1898 SmallString<0> CompressedBuffer;
1899 if (llvm::zlib::isAvailable()) {
1900 llvm::Error E = llvm::zlib::compress(Blob.drop_back(1), CompressedBuffer);
1901 if (!E) {
1902 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB_COMPRESSED,
1903 Blob.size() - 1};
1904 Stream.EmitRecordWithBlob(SLocBufferBlobCompressedAbbrv, Record,
1905 CompressedBuffer);
1906 return;
1907 }
1908 llvm::consumeError(std::move(E));
1909 }
1910
1911 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB};
1912 Stream.EmitRecordWithBlob(SLocBufferBlobAbbrv, Record, Blob);
1913}
1914
1915/// Writes the block containing the serialized form of the
1916/// source manager.
1917///
1918/// TODO: We should probably use an on-disk hash table (stored in a
1919/// blob), indexed based on the file name, so that we only create
1920/// entries for files that we actually need. In the common case (no
1921/// errors), we probably won't have to create file entries for any of
1922/// the files in the AST.
1923void ASTWriter::WriteSourceManagerBlock(SourceManager &SourceMgr,
1924 const Preprocessor &PP) {
1925 RecordData Record;
1926
1927 // Enter the source manager block.
1928 Stream.EnterSubblock(SOURCE_MANAGER_BLOCK_ID, 4);
1929 const uint64_t SourceManagerBlockOffset = Stream.GetCurrentBitNo();
1930
1931 // Abbreviations for the various kinds of source-location entries.
1932 unsigned SLocFileAbbrv = CreateSLocFileAbbrev(Stream);
1933 unsigned SLocBufferAbbrv = CreateSLocBufferAbbrev(Stream);
1934 unsigned SLocBufferBlobAbbrv = CreateSLocBufferBlobAbbrev(Stream, false);
1935 unsigned SLocBufferBlobCompressedAbbrv =
1936 CreateSLocBufferBlobAbbrev(Stream, true);
1937 unsigned SLocExpansionAbbrv = CreateSLocExpansionAbbrev(Stream);
1938
1939 // Write out the source location entry table. We skip the first
1940 // entry, which is always the same dummy entry.
1941 std::vector<uint32_t> SLocEntryOffsets;
1942 uint64_t SLocEntryOffsetsBase = Stream.GetCurrentBitNo();
1943 RecordData PreloadSLocs;
1944 SLocEntryOffsets.reserve(SourceMgr.local_sloc_entry_size() - 1);
1945 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size();
1946 I != N; ++I) {
1947 // Get this source location entry.
1948 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
1949 FileID FID = FileID::get(I);
1950 assert(&SourceMgr.getSLocEntry(FID) == SLoc)((&SourceMgr.getSLocEntry(FID) == SLoc) ? static_cast<
void> (0) : __assert_fail ("&SourceMgr.getSLocEntry(FID) == SLoc"
, "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 1950, __PRETTY_FUNCTION__))
;
1951
1952 // Record the offset of this source-location entry.
1953 uint64_t Offset = Stream.GetCurrentBitNo() - SLocEntryOffsetsBase;
1954 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 1954, __PRETTY_FUNCTION__))
;
1955 SLocEntryOffsets.push_back(Offset);
1956
1957 // Figure out which record code to use.
1958 unsigned Code;
1959 if (SLoc->isFile()) {
1960 const SrcMgr::ContentCache *Cache = &SLoc->getFile().getContentCache();
1961 if (Cache->OrigEntry) {
1962 Code = SM_SLOC_FILE_ENTRY;
1963 } else
1964 Code = SM_SLOC_BUFFER_ENTRY;
1965 } else
1966 Code = SM_SLOC_EXPANSION_ENTRY;
1967 Record.clear();
1968 Record.push_back(Code);
1969
1970 // Starting offset of this entry within this module, so skip the dummy.
1971 Record.push_back(SLoc->getOffset() - 2);
1972 if (SLoc->isFile()) {
1973 const SrcMgr::FileInfo &File = SLoc->getFile();
1974 AddSourceLocation(File.getIncludeLoc(), Record);
1975 Record.push_back(File.getFileCharacteristic()); // FIXME: stable encoding
1976 Record.push_back(File.hasLineDirectives());
1977
1978 const SrcMgr::ContentCache *Content = &File.getContentCache();
1979 bool EmitBlob = false;
1980 if (Content->OrigEntry) {
1981 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 1982, __PRETTY_FUNCTION__))
1982 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 1982, __PRETTY_FUNCTION__))
;
1983
1984 // The source location entry is a file. Emit input file ID.
1985 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 1985, __PRETTY_FUNCTION__))
;
1986 Record.push_back(InputFileIDs[Content->OrigEntry]);
1987
1988 Record.push_back(File.NumCreatedFIDs);
1989
1990 FileDeclIDsTy::iterator FDI = FileDeclIDs.find(FID);
1991 if (FDI != FileDeclIDs.end()) {
1992 Record.push_back(FDI->second->FirstDeclIndex);
1993 Record.push_back(FDI->second->DeclIDs.size());
1994 } else {
1995 Record.push_back(0);
1996 Record.push_back(0);
1997 }
1998
1999 Stream.EmitRecordWithAbbrev(SLocFileAbbrv, Record);
2000
2001 if (Content->BufferOverridden || Content->IsTransient)
2002 EmitBlob = true;
2003 } else {
2004 // The source location entry is a buffer. The blob associated
2005 // with this entry contains the contents of the buffer.
2006
2007 // We add one to the size so that we capture the trailing NULL
2008 // that is required by llvm::MemoryBuffer::getMemBuffer (on
2009 // the reader side).
2010 llvm::Optional<llvm::MemoryBufferRef> Buffer =
2011 Content->getBufferOrNone(PP.getDiagnostics(), PP.getFileManager());
2012 StringRef Name = Buffer ? Buffer->getBufferIdentifier() : "";
2013 Stream.EmitRecordWithBlob(SLocBufferAbbrv, Record,
2014 StringRef(Name.data(), Name.size() + 1));
2015 EmitBlob = true;
2016
2017 if (Name == "<built-in>")
2018 PreloadSLocs.push_back(SLocEntryOffsets.size());
2019 }
2020
2021 if (EmitBlob) {
2022 // Include the implicit terminating null character in the on-disk buffer
2023 // if we're writing it uncompressed.
2024 llvm::Optional<llvm::MemoryBufferRef> Buffer =
2025 Content->getBufferOrNone(PP.getDiagnostics(), PP.getFileManager());
2026 if (!Buffer)
2027 Buffer = llvm::MemoryBufferRef("<<<INVALID BUFFER>>>", "");
2028 StringRef Blob(Buffer->getBufferStart(), Buffer->getBufferSize() + 1);
2029 emitBlob(Stream, Blob, SLocBufferBlobCompressedAbbrv,
2030 SLocBufferBlobAbbrv);
2031 }
2032 } else {
2033 // The source location entry is a macro expansion.
2034 const SrcMgr::ExpansionInfo &Expansion = SLoc->getExpansion();
2035 AddSourceLocation(Expansion.getSpellingLoc(), Record);
2036 AddSourceLocation(Expansion.getExpansionLocStart(), Record);
2037 AddSourceLocation(Expansion.isMacroArgExpansion()
2038 ? SourceLocation()
2039 : Expansion.getExpansionLocEnd(),
2040 Record);
2041 Record.push_back(Expansion.isExpansionTokenRange());
2042
2043 // Compute the token length for this macro expansion.
2044 unsigned NextOffset = SourceMgr.getNextLocalOffset();
2045 if (I + 1 != N)
2046 NextOffset = SourceMgr.getLocalSLocEntry(I + 1).getOffset();
2047 Record.push_back(NextOffset - SLoc->getOffset() - 1);
2048 Stream.EmitRecordWithAbbrev(SLocExpansionAbbrv, Record);
2049 }
2050 }
2051
2052 Stream.ExitBlock();
2053
2054 if (SLocEntryOffsets.empty())
2055 return;
2056
2057 // Write the source-location offsets table into the AST block. This
2058 // table is used for lazily loading source-location information.
2059 using namespace llvm;
2060
2061 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2062 Abbrev->Add(BitCodeAbbrevOp(SOURCE_LOCATION_OFFSETS));
2063 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs
2064 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // total size
2065 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // base offset
2066 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets
2067 unsigned SLocOffsetsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2068 {
2069 RecordData::value_type Record[] = {
2070 SOURCE_LOCATION_OFFSETS, SLocEntryOffsets.size(),
2071 SourceMgr.getNextLocalOffset() - 1 /* skip dummy */,
2072 SLocEntryOffsetsBase - SourceManagerBlockOffset};
2073 Stream.EmitRecordWithBlob(SLocOffsetsAbbrev, Record,
2074 bytes(SLocEntryOffsets));
2075 }
2076 // Write the source location entry preloads array, telling the AST
2077 // reader which source locations entries it should load eagerly.
2078 Stream.EmitRecord(SOURCE_LOCATION_PRELOADS, PreloadSLocs);
2079
2080 // Write the line table. It depends on remapping working, so it must come
2081 // after the source location offsets.
2082 if (SourceMgr.hasLineTable()) {
2083 LineTableInfo &LineTable = SourceMgr.getLineTable();
2084
2085 Record.clear();
2086
2087 // Emit the needed file names.
2088 llvm::DenseMap<int, int> FilenameMap;
2089 FilenameMap[-1] = -1; // For unspecified filenames.
2090 for (const auto &L : LineTable) {
2091 if (L.first.ID < 0)
2092 continue;
2093 for (auto &LE : L.second) {
2094 if (FilenameMap.insert(std::make_pair(LE.FilenameID,
2095 FilenameMap.size() - 1)).second)
2096 AddPath(LineTable.getFilename(LE.FilenameID), Record);
2097 }
2098 }
2099 Record.push_back(0);
2100
2101 // Emit the line entries
2102 for (const auto &L : LineTable) {
2103 // Only emit entries for local files.
2104 if (L.first.ID < 0)
2105 continue;
2106
2107 // Emit the file ID
2108 Record.push_back(L.first.ID);
2109
2110 // Emit the line entries
2111 Record.push_back(L.second.size());
2112 for (const auto &LE : L.second) {
2113 Record.push_back(LE.FileOffset);
2114 Record.push_back(LE.LineNo);
2115 Record.push_back(FilenameMap[LE.FilenameID]);
2116 Record.push_back((unsigned)LE.FileKind);
2117 Record.push_back(LE.IncludeOffset);
2118 }
2119 }
2120
2121 Stream.EmitRecord(SOURCE_MANAGER_LINE_TABLE, Record);
2122 }
2123}
2124
2125//===----------------------------------------------------------------------===//
2126// Preprocessor Serialization
2127//===----------------------------------------------------------------------===//
2128
2129static bool shouldIgnoreMacro(MacroDirective *MD, bool IsModule,
2130 const Preprocessor &PP) {
2131 if (MacroInfo *MI = MD->getMacroInfo())
2132 if (MI->isBuiltinMacro())
2133 return true;
2134
2135 if (IsModule) {
2136 SourceLocation Loc = MD->getLocation();
2137 if (Loc.isInvalid())
2138 return true;
2139 if (PP.getSourceManager().getFileID(Loc) == PP.getPredefinesFileID())
2140 return true;
2141 }
2142
2143 return false;
2144}
2145
2146/// Writes the block containing the serialized form of the
2147/// preprocessor.
2148void ASTWriter::WritePreprocessor(const Preprocessor &PP, bool IsModule) {
2149 uint64_t MacroOffsetsBase = Stream.GetCurrentBitNo();
2150
2151 PreprocessingRecord *PPRec = PP.getPreprocessingRecord();
2152 if (PPRec)
2153 WritePreprocessorDetail(*PPRec, MacroOffsetsBase);
2154
2155 RecordData Record;
2156 RecordData ModuleMacroRecord;
2157
2158 // If the preprocessor __COUNTER__ value has been bumped, remember it.
2159 if (PP.getCounterValue() != 0) {
2160 RecordData::value_type Record[] = {PP.getCounterValue()};
2161 Stream.EmitRecord(PP_COUNTER_VALUE, Record);
2162 }
2163
2164 if (PP.isRecordingPreamble() && PP.hasRecordedPreamble()) {
2165 assert(!IsModule)((!IsModule) ? static_cast<void> (0) : __assert_fail ("!IsModule"
, "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 2165, __PRETTY_FUNCTION__))
;
2166 auto SkipInfo = PP.getPreambleSkipInfo();
2167 if (SkipInfo.hasValue()) {
2168 Record.push_back(true);
2169 AddSourceLocation(SkipInfo->HashTokenLoc, Record);
2170 AddSourceLocation(SkipInfo->IfTokenLoc, Record);
2171 Record.push_back(SkipInfo->FoundNonSkipPortion);
2172 Record.push_back(SkipInfo->FoundElse);
2173 AddSourceLocation(SkipInfo->ElseLoc, Record);
2174 } else {
2175 Record.push_back(false);
2176 }
2177 for (const auto &Cond : PP.getPreambleConditionalStack()) {
2178 AddSourceLocation(Cond.IfLoc, Record);
2179 Record.push_back(Cond.WasSkipping);
2180 Record.push_back(Cond.FoundNonSkip);
2181 Record.push_back(Cond.FoundElse);
2182 }
2183 Stream.EmitRecord(PP_CONDITIONAL_STACK, Record);
2184 Record.clear();
2185 }
2186
2187 // Enter the preprocessor block.
2188 Stream.EnterSubblock(PREPROCESSOR_BLOCK_ID, 3);
2189
2190 // If the AST file contains __DATE__ or __TIME__ emit a warning about this.
2191 // FIXME: Include a location for the use, and say which one was used.
2192 if (PP.SawDateOrTime())
2193 PP.Diag(SourceLocation(), diag::warn_module_uses_date_time) << IsModule;
2194
2195 // Loop over all the macro directives that are live at the end of the file,
2196 // emitting each to the PP section.
2197
2198 // Construct the list of identifiers with macro directives that need to be
2199 // serialized.
2200 SmallVector<const IdentifierInfo *, 128> MacroIdentifiers;
2201 for (auto &Id : PP.getIdentifierTable())
2202 if (Id.second->hadMacroDefinition() &&
2203 (!Id.second->isFromAST() ||
2204 Id.second->hasChangedSinceDeserialization()))
2205 MacroIdentifiers.push_back(Id.second);
2206 // Sort the set of macro definitions that need to be serialized by the
2207 // name of the macro, to provide a stable ordering.
2208 llvm::sort(MacroIdentifiers, llvm::deref<std::less<>>());
2209
2210 // Emit the macro directives as a list and associate the offset with the
2211 // identifier they belong to.
2212 for (const IdentifierInfo *Name : MacroIdentifiers) {
2213 MacroDirective *MD = PP.getLocalMacroDirectiveHistory(Name);
2214 uint64_t StartOffset = Stream.GetCurrentBitNo() - MacroOffsetsBase;
2215 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 2215, __PRETTY_FUNCTION__))
;
2216
2217 // Emit the macro directives in reverse source order.
2218 for (; MD; MD = MD->getPrevious()) {
2219 // Once we hit an ignored macro, we're done: the rest of the chain
2220 // will all be ignored macros.
2221 if (shouldIgnoreMacro(MD, IsModule, PP))
2222 break;
2223
2224 AddSourceLocation(MD->getLocation(), Record);
2225 Record.push_back(MD->getKind());
2226 if (auto *DefMD = dyn_cast<DefMacroDirective>(MD)) {
2227 Record.push_back(getMacroRef(DefMD->getInfo(), Name));
2228 } else if (auto *VisMD = dyn_cast<VisibilityMacroDirective>(MD)) {
2229 Record.push_back(VisMD->isPublic());
2230 }
2231 }
2232
2233 // Write out any exported module macros.
2234 bool EmittedModuleMacros = false;
2235 // We write out exported module macros for PCH as well.
2236 auto Leafs = PP.getLeafModuleMacros(Name);
2237 SmallVector<ModuleMacro*, 8> Worklist(Leafs.begin(), Leafs.end());
2238 llvm::DenseMap<ModuleMacro*, unsigned> Visits;
2239 while (!Worklist.empty()) {
2240 auto *Macro = Worklist.pop_back_val();
2241
2242 // Emit a record indicating this submodule exports this macro.
2243 ModuleMacroRecord.push_back(
2244 getSubmoduleID(Macro->getOwningModule()));
2245 ModuleMacroRecord.push_back(getMacroRef(Macro->getMacroInfo(), Name));
2246 for (auto *M : Macro->overrides())
2247 ModuleMacroRecord.push_back(getSubmoduleID(M->getOwningModule()));
2248
2249 Stream.EmitRecord(PP_MODULE_MACRO, ModuleMacroRecord);
2250 ModuleMacroRecord.clear();
2251
2252 // Enqueue overridden macros once we've visited all their ancestors.
2253 for (auto *M : Macro->overrides())
2254 if (++Visits[M] == M->getNumOverridingMacros())
2255 Worklist.push_back(M);
2256
2257 EmittedModuleMacros = true;
2258 }
2259
2260 if (Record.empty() && !EmittedModuleMacros)
2261 continue;
2262
2263 IdentMacroDirectivesOffsetMap[Name] = StartOffset;
2264 Stream.EmitRecord(PP_MACRO_DIRECTIVE_HISTORY, Record);
2265 Record.clear();
2266 }
2267
2268 /// Offsets of each of the macros into the bitstream, indexed by
2269 /// the local macro ID
2270 ///
2271 /// For each identifier that is associated with a macro, this map
2272 /// provides the offset into the bitstream where that macro is
2273 /// defined.
2274 std::vector<uint32_t> MacroOffsets;
2275
2276 for (unsigned I = 0, N = MacroInfosToEmit.size(); I != N; ++I) {
2277 const IdentifierInfo *Name = MacroInfosToEmit[I].Name;
2278 MacroInfo *MI = MacroInfosToEmit[I].MI;
2279 MacroID ID = MacroInfosToEmit[I].ID;
2280
2281 if (ID < FirstMacroID) {
2282 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 2282, __PRETTY_FUNCTION__))
;
2283 continue;
2284 }
2285
2286 // Record the local offset of this macro.
2287 unsigned Index = ID - FirstMacroID;
2288 if (Index >= MacroOffsets.size())
2289 MacroOffsets.resize(Index + 1);
2290
2291 uint64_t Offset = Stream.GetCurrentBitNo() - MacroOffsetsBase;
2292 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 2292, __PRETTY_FUNCTION__))
;
2293 MacroOffsets[Index] = Offset;
2294
2295 AddIdentifierRef(Name, Record);
2296 AddSourceLocation(MI->getDefinitionLoc(), Record);
2297 AddSourceLocation(MI->getDefinitionEndLoc(), Record);
2298 Record.push_back(MI->isUsed());
2299 Record.push_back(MI->isUsedForHeaderGuard());
2300 unsigned Code;
2301 if (MI->isObjectLike()) {
2302 Code = PP_MACRO_OBJECT_LIKE;
2303 } else {
2304 Code = PP_MACRO_FUNCTION_LIKE;
2305
2306 Record.push_back(MI->isC99Varargs());
2307 Record.push_back(MI->isGNUVarargs());
2308 Record.push_back(MI->hasCommaPasting());
2309 Record.push_back(MI->getNumParams());
2310 for (const IdentifierInfo *Param : MI->params())
2311 AddIdentifierRef(Param, Record);
2312 }
2313
2314 // If we have a detailed preprocessing record, record the macro definition
2315 // ID that corresponds to this macro.
2316 if (PPRec)
2317 Record.push_back(MacroDefinitions[PPRec->findMacroDefinition(MI)]);
2318
2319 Stream.EmitRecord(Code, Record);
2320 Record.clear();
2321
2322 // Emit the tokens array.
2323 for (unsigned TokNo = 0, e = MI->getNumTokens(); TokNo != e; ++TokNo) {
2324 // Note that we know that the preprocessor does not have any annotation
2325 // tokens in it because they are created by the parser, and thus can't
2326 // be in a macro definition.
2327 const Token &Tok = MI->getReplacementToken(TokNo);
2328 AddToken(Tok, Record);
2329 Stream.EmitRecord(PP_TOKEN, Record);
2330 Record.clear();
2331 }
2332 ++NumMacros;
2333 }
2334
2335 Stream.ExitBlock();
2336
2337 // Write the offsets table for macro IDs.
2338 using namespace llvm;
2339
2340 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2341 Abbrev->Add(BitCodeAbbrevOp(MACRO_OFFSET));
2342 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of macros
2343 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
2344 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // base offset
2345 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2346
2347 unsigned MacroOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2348 {
2349 RecordData::value_type Record[] = {MACRO_OFFSET, MacroOffsets.size(),
2350 FirstMacroID - NUM_PREDEF_MACRO_IDS,
2351 MacroOffsetsBase - ASTBlockStartOffset};
2352 Stream.EmitRecordWithBlob(MacroOffsetAbbrev, Record, bytes(MacroOffsets));
2353 }
2354}
2355
2356void ASTWriter::WritePreprocessorDetail(PreprocessingRecord &PPRec,
2357 uint64_t MacroOffsetsBase) {
2358 if (PPRec.local_begin() == PPRec.local_end())
2359 return;
2360
2361 SmallVector<PPEntityOffset, 64> PreprocessedEntityOffsets;
2362
2363 // Enter the preprocessor block.
2364 Stream.EnterSubblock(PREPROCESSOR_DETAIL_BLOCK_ID, 3);
2365
2366 // If the preprocessor has a preprocessing record, emit it.
2367 unsigned NumPreprocessingRecords = 0;
2368 using namespace llvm;
2369
2370 // Set up the abbreviation for
2371 unsigned InclusionAbbrev = 0;
2372 {
2373 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2374 Abbrev->Add(BitCodeAbbrevOp(PPD_INCLUSION_DIRECTIVE));
2375 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // filename length
2376 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // in quotes
2377 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // kind
2378 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // imported module
2379 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2380 InclusionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2381 }
2382
2383 unsigned FirstPreprocessorEntityID
2384 = (Chain ? PPRec.getNumLoadedPreprocessedEntities() : 0)
2385 + NUM_PREDEF_PP_ENTITY_IDS;
2386 unsigned NextPreprocessorEntityID = FirstPreprocessorEntityID;
2387 RecordData Record;
2388 for (PreprocessingRecord::iterator E = PPRec.local_begin(),
2389 EEnd = PPRec.local_end();
2390 E != EEnd;
2391 (void)++E, ++NumPreprocessingRecords, ++NextPreprocessorEntityID) {
2392 Record.clear();
2393
2394 uint64_t Offset = Stream.GetCurrentBitNo() - MacroOffsetsBase;
2395 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 2395, __PRETTY_FUNCTION__))
;
2396 PreprocessedEntityOffsets.push_back(
2397 PPEntityOffset((*E)->getSourceRange(), Offset));
2398
2399 if (auto *MD = dyn_cast<MacroDefinitionRecord>(*E)) {
2400 // Record this macro definition's ID.
2401 MacroDefinitions[MD] = NextPreprocessorEntityID;
2402
2403 AddIdentifierRef(MD->getName(), Record);
2404 Stream.EmitRecord(PPD_MACRO_DEFINITION, Record);
2405 continue;
2406 }
2407
2408 if (auto *ME = dyn_cast<MacroExpansion>(*E)) {
2409 Record.push_back(ME->isBuiltinMacro());
2410 if (ME->isBuiltinMacro())
2411 AddIdentifierRef(ME->getName(), Record);
2412 else
2413 Record.push_back(MacroDefinitions[ME->getDefinition()]);
2414 Stream.EmitRecord(PPD_MACRO_EXPANSION, Record);
2415 continue;
2416 }
2417
2418 if (auto *ID = dyn_cast<InclusionDirective>(*E)) {
2419 Record.push_back(PPD_INCLUSION_DIRECTIVE);
2420 Record.push_back(ID->getFileName().size());
2421 Record.push_back(ID->wasInQuotes());
2422 Record.push_back(static_cast<unsigned>(ID->getKind()));
2423 Record.push_back(ID->importedModule());
2424 SmallString<64> Buffer;
2425 Buffer += ID->getFileName();
2426 // Check that the FileEntry is not null because it was not resolved and
2427 // we create a PCH even with compiler errors.
2428 if (ID->getFile())
2429 Buffer += ID->getFile()->getName();
2430 Stream.EmitRecordWithBlob(InclusionAbbrev, Record, Buffer);
2431 continue;
2432 }
2433
2434 llvm_unreachable("Unhandled PreprocessedEntity in ASTWriter")::llvm::llvm_unreachable_internal("Unhandled PreprocessedEntity in ASTWriter"
, "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 2434)
;
2435 }
2436 Stream.ExitBlock();
2437
2438 // Write the offsets table for the preprocessing record.
2439 if (NumPreprocessingRecords > 0) {
2440 assert(PreprocessedEntityOffsets.size() == NumPreprocessingRecords)((PreprocessedEntityOffsets.size() == NumPreprocessingRecords
) ? static_cast<void> (0) : __assert_fail ("PreprocessedEntityOffsets.size() == NumPreprocessingRecords"
, "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 2440, __PRETTY_FUNCTION__))
;
2441
2442 // Write the offsets table for identifier IDs.
2443 using namespace llvm;
2444
2445 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2446 Abbrev->Add(BitCodeAbbrevOp(PPD_ENTITIES_OFFSETS));
2447 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first pp entity
2448 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2449 unsigned PPEOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2450
2451 RecordData::value_type Record[] = {PPD_ENTITIES_OFFSETS,
2452 FirstPreprocessorEntityID -
2453 NUM_PREDEF_PP_ENTITY_IDS};
2454 Stream.EmitRecordWithBlob(PPEOffsetAbbrev, Record,
2455 bytes(PreprocessedEntityOffsets));
2456 }
2457
2458 // Write the skipped region table for the preprocessing record.
2459 ArrayRef<SourceRange> SkippedRanges = PPRec.getSkippedRanges();
2460 if (SkippedRanges.size() > 0) {
2461 std::vector<PPSkippedRange> SerializedSkippedRanges;
2462 SerializedSkippedRanges.reserve(SkippedRanges.size());
2463 for (auto const& Range : SkippedRanges)
2464 SerializedSkippedRanges.emplace_back(Range);
2465
2466 using namespace llvm;
2467 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2468 Abbrev->Add(BitCodeAbbrevOp(PPD_SKIPPED_RANGES));
2469 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2470 unsigned PPESkippedRangeAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2471
2472 Record.clear();
2473 Record.push_back(PPD_SKIPPED_RANGES);
2474 Stream.EmitRecordWithBlob(PPESkippedRangeAbbrev, Record,
2475 bytes(SerializedSkippedRanges));
2476 }
2477}
2478
2479unsigned ASTWriter::getLocalOrImportedSubmoduleID(Module *Mod) {
2480 if (!Mod)
2481 return 0;
2482
2483 llvm::DenseMap<Module *, unsigned>::iterator Known = SubmoduleIDs.find(Mod);
2484 if (Known != SubmoduleIDs.end())
2485 return Known->second;
2486
2487 auto *Top = Mod->getTopLevelModule();
2488 if (Top != WritingModule &&
2489 (getLangOpts().CompilingPCH ||
2490 !Top->fullModuleNameIs(StringRef(getLangOpts().CurrentModule))))
2491 return 0;
2492
2493 return SubmoduleIDs[Mod] = NextSubmoduleID++;
2494}
2495
2496unsigned ASTWriter::getSubmoduleID(Module *Mod) {
2497 // FIXME: This can easily happen, if we have a reference to a submodule that
2498 // did not result in us loading a module file for that submodule. For
2499 // instance, a cross-top-level-module 'conflict' declaration will hit this.
2500 unsigned ID = getLocalOrImportedSubmoduleID(Mod);
2501 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 2502, __PRETTY_FUNCTION__))
2502 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 2502, __PRETTY_FUNCTION__))
;
2503 return ID;
2504}
2505
2506/// Compute the number of modules within the given tree (including the
2507/// given module).
2508static unsigned getNumberOfModules(Module *Mod) {
2509 unsigned ChildModules = 0;
2510 for (auto Sub = Mod->submodule_begin(), SubEnd = Mod->submodule_end();
2511 Sub != SubEnd; ++Sub)
2512 ChildModules += getNumberOfModules(*Sub);
2513
2514 return ChildModules + 1;
2515}
2516
2517void ASTWriter::WriteSubmodules(Module *WritingModule) {
2518 // Enter the submodule description block.
2519 Stream.EnterSubblock(SUBMODULE_BLOCK_ID, /*bits for abbreviations*/5);
2520
2521 // Write the abbreviations needed for the submodules block.
2522 using namespace llvm;
2523
2524 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2525 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_DEFINITION));
2526 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
2527 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Parent
2528 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Kind
2529 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2530 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExplicit
2531 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsSystem
2532 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExternC
2533 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferSubmodules...
2534 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExplicit...
2535 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExportWild...
2536 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ConfigMacrosExh...
2537 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModuleMapIsPriv...
2538 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2539 unsigned DefinitionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2540
2541 Abbrev = std::make_shared<BitCodeAbbrev>();
2542 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_HEADER));
2543 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2544 unsigned UmbrellaAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2545
2546 Abbrev = std::make_shared<BitCodeAbbrev>();
2547 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_HEADER));
2548 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2549 unsigned HeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2550
2551 Abbrev = std::make_shared<BitCodeAbbrev>();
2552 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TOPHEADER));
2553 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2554 unsigned TopHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2555
2556 Abbrev = std::make_shared<BitCodeAbbrev>();
2557 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_DIR));
2558 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2559 unsigned UmbrellaDirAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2560
2561 Abbrev = std::make_shared<BitCodeAbbrev>();
2562 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_REQUIRES));
2563 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // State
2564 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Feature
2565 unsigned RequiresAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2566
2567 Abbrev = std::make_shared<BitCodeAbbrev>();
2568 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXCLUDED_HEADER));
2569 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2570 unsigned ExcludedHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2571
2572 Abbrev = std::make_shared<BitCodeAbbrev>();
2573 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TEXTUAL_HEADER));
2574 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2575 unsigned TextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2576
2577 Abbrev = std::make_shared<BitCodeAbbrev>();
2578 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_HEADER));
2579 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2580 unsigned PrivateHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2581
2582 Abbrev = std::make_shared<BitCodeAbbrev>();
2583 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_TEXTUAL_HEADER));
2584 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2585 unsigned PrivateTextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2586
2587 Abbrev = std::make_shared<BitCodeAbbrev>();
2588 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_LINK_LIBRARY));
2589 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2590 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2591 unsigned LinkLibraryAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2592
2593 Abbrev = std::make_shared<BitCodeAbbrev>();
2594 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFIG_MACRO));
2595 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2596 unsigned ConfigMacroAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2597
2598 Abbrev = std::make_shared<BitCodeAbbrev>();
2599 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFLICT));
2600 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Other module
2601 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Message
2602 unsigned ConflictAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2603
2604 Abbrev = std::make_shared<BitCodeAbbrev>();
2605 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXPORT_AS));
2606 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2607 unsigned ExportAsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2608
2609 // Write the submodule metadata block.
2610 RecordData::value_type Record[] = {
2611 getNumberOfModules(WritingModule),
2612 FirstSubmoduleID - NUM_PREDEF_SUBMODULE_IDS};
2613 Stream.EmitRecord(SUBMODULE_METADATA, Record);
2614
2615 // Write all of the submodules.
2616 std::queue<Module *> Q;
2617 Q.push(WritingModule);
2618 while (!Q.empty()) {
2619 Module *Mod = Q.front();
2620 Q.pop();
2621 unsigned ID = getSubmoduleID(Mod);
2622
2623 uint64_t ParentID = 0;
2624 if (Mod->Parent) {
2625 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 2625, __PRETTY_FUNCTION__))
;
2626 ParentID = SubmoduleIDs[Mod->Parent];
2627 }
2628
2629 // Emit the definition of the block.
2630 {
2631 RecordData::value_type Record[] = {SUBMODULE_DEFINITION,
2632 ID,
2633 ParentID,
2634 (RecordData::value_type)Mod->Kind,
2635 Mod->IsFramework,
2636 Mod->IsExplicit,
2637 Mod->IsSystem,
2638 Mod->IsExternC,
2639 Mod->InferSubmodules,
2640 Mod->InferExplicitSubmodules,
2641 Mod->InferExportWildcard,
2642 Mod->ConfigMacrosExhaustive,
2643 Mod->ModuleMapIsPrivate};
2644 Stream.EmitRecordWithBlob(DefinitionAbbrev, Record, Mod->Name);
2645 }
2646
2647 // Emit the requirements.
2648 for (const auto &R : Mod->Requirements) {
2649 RecordData::value_type Record[] = {SUBMODULE_REQUIRES, R.second};
2650 Stream.EmitRecordWithBlob(RequiresAbbrev, Record, R.first);
2651 }
2652
2653 // Emit the umbrella header, if there is one.
2654 if (auto UmbrellaHeader = Mod->getUmbrellaHeader()) {
2655 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_HEADER};
2656 Stream.EmitRecordWithBlob(UmbrellaAbbrev, Record,
2657 UmbrellaHeader.NameAsWritten);
2658 } else if (auto UmbrellaDir = Mod->getUmbrellaDir()) {
2659 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_DIR};
2660 Stream.EmitRecordWithBlob(UmbrellaDirAbbrev, Record,
2661 UmbrellaDir.NameAsWritten);
2662 }
2663
2664 // Emit the headers.
2665 struct {
2666 unsigned RecordKind;
2667 unsigned Abbrev;
2668 Module::HeaderKind HeaderKind;
2669 } HeaderLists[] = {
2670 {SUBMODULE_HEADER, HeaderAbbrev, Module::HK_Normal},
2671 {SUBMODULE_TEXTUAL_HEADER, TextualHeaderAbbrev, Module::HK_Textual},
2672 {SUBMODULE_PRIVATE_HEADER, PrivateHeaderAbbrev, Module::HK_Private},
2673 {SUBMODULE_PRIVATE_TEXTUAL_HEADER, PrivateTextualHeaderAbbrev,
2674 Module::HK_PrivateTextual},
2675 {SUBMODULE_EXCLUDED_HEADER, ExcludedHeaderAbbrev, Module::HK_Excluded}
2676 };
2677 for (auto &HL : HeaderLists) {
2678 RecordData::value_type Record[] = {HL.RecordKind};
2679 for (auto &H : Mod->Headers[HL.HeaderKind])
2680 Stream.EmitRecordWithBlob(HL.Abbrev, Record, H.NameAsWritten);
2681 }
2682
2683 // Emit the top headers.
2684 {
2685 auto TopHeaders = Mod->getTopHeaders(PP->getFileManager());
2686 RecordData::value_type Record[] = {SUBMODULE_TOPHEADER};
2687 for (auto *H : TopHeaders)
2688 Stream.EmitRecordWithBlob(TopHeaderAbbrev, Record, H->getName());
2689 }
2690
2691 // Emit the imports.
2692 if (!Mod->Imports.empty()) {
2693 RecordData Record;
2694 for (auto *I : Mod->Imports)
2695 Record.push_back(getSubmoduleID(I));
2696 Stream.EmitRecord(SUBMODULE_IMPORTS, Record);
2697 }
2698
2699 // Emit the exports.
2700 if (!Mod->Exports.empty()) {
2701 RecordData Record;
2702 for (const auto &E : Mod->Exports) {
2703 // FIXME: This may fail; we don't require that all exported modules
2704 // are local or imported.
2705 Record.push_back(getSubmoduleID(E.getPointer()));
2706 Record.push_back(E.getInt());
2707 }
2708 Stream.EmitRecord(SUBMODULE_EXPORTS, Record);
2709 }
2710
2711 //FIXME: How do we emit the 'use'd modules? They may not be submodules.
2712 // Might be unnecessary as use declarations are only used to build the
2713 // module itself.
2714
2715 // Emit the link libraries.
2716 for (const auto &LL : Mod->LinkLibraries) {
2717 RecordData::value_type Record[] = {SUBMODULE_LINK_LIBRARY,
2718 LL.IsFramework};
2719 Stream.EmitRecordWithBlob(LinkLibraryAbbrev, Record, LL.Library);
2720 }
2721
2722 // Emit the conflicts.
2723 for (const auto &C : Mod->Conflicts) {
2724 // FIXME: This may fail; we don't require that all conflicting modules
2725 // are local or imported.
2726 RecordData::value_type Record[] = {SUBMODULE_CONFLICT,
2727 getSubmoduleID(C.Other)};
2728 Stream.EmitRecordWithBlob(ConflictAbbrev, Record, C.Message);
2729 }
2730
2731 // Emit the configuration macros.
2732 for (const auto &CM : Mod->ConfigMacros) {
2733 RecordData::value_type Record[] = {SUBMODULE_CONFIG_MACRO};
2734 Stream.EmitRecordWithBlob(ConfigMacroAbbrev, Record, CM);
2735 }
2736
2737 // Emit the initializers, if any.
2738 RecordData Inits;
2739 for (Decl *D : Context->getModuleInitializers(Mod))
2740 Inits.push_back(GetDeclRef(D));
2741 if (!Inits.empty())
2742 Stream.EmitRecord(SUBMODULE_INITIALIZERS, Inits);
2743
2744 // Emit the name of the re-exported module, if any.
2745 if (!Mod->ExportAsModule.empty()) {
2746 RecordData::value_type Record[] = {SUBMODULE_EXPORT_AS};
2747 Stream.EmitRecordWithBlob(ExportAsAbbrev, Record, Mod->ExportAsModule);
2748 }
2749
2750 // Queue up the submodules of this module.
2751 for (auto *M : Mod->submodules())
2752 Q.push(M);
2753 }
2754
2755 Stream.ExitBlock();
2756
2757 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 2760, __PRETTY_FUNCTION__))
2758 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 2760, __PRETTY_FUNCTION__))
2759 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 2760, __PRETTY_FUNCTION__))
2760 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 2760, __PRETTY_FUNCTION__))
;
2761}
2762
2763void ASTWriter::WritePragmaDiagnosticMappings(const DiagnosticsEngine &Diag,
2764 bool isModule) {
2765 llvm::SmallDenseMap<const DiagnosticsEngine::DiagState *, unsigned, 64>
2766 DiagStateIDMap;
2767 unsigned CurrID = 0;
2768 RecordData Record;
2769
2770 auto EncodeDiagStateFlags =
2771 [](const DiagnosticsEngine::DiagState *DS) -> unsigned {
2772 unsigned Result = (unsigned)DS->ExtBehavior;
2773 for (unsigned Val :
2774 {(unsigned)DS->IgnoreAllWarnings, (unsigned)DS->EnableAllWarnings,
2775 (unsigned)DS->WarningsAsErrors, (unsigned)DS->ErrorsAsFatal,
2776 (unsigned)DS->SuppressSystemWarnings})
2777 Result = (Result << 1) | Val;
2778 return Result;
2779 };
2780
2781 unsigned Flags = EncodeDiagStateFlags(Diag.DiagStatesByLoc.FirstDiagState);
2782 Record.push_back(Flags);
2783
2784 auto AddDiagState = [&](const DiagnosticsEngine::DiagState *State,
2785 bool IncludeNonPragmaStates) {
2786 // Ensure that the diagnostic state wasn't modified since it was created.
2787 // We will not correctly round-trip this information otherwise.
2788 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 2789, __PRETTY_FUNCTION__))
2789 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 2789, __PRETTY_FUNCTION__))
;
2790
2791 unsigned &DiagStateID = DiagStateIDMap[State];
2792 Record.push_back(DiagStateID);
2793
2794 if (DiagStateID == 0) {
2795 DiagStateID = ++CurrID;
2796
2797 // Add a placeholder for the number of mappings.
2798 auto SizeIdx = Record.size();
2799 Record.emplace_back();
2800 for (const auto &I : *State) {
2801 if (I.second.isPragma() || IncludeNonPragmaStates) {
2802 Record.push_back(I.first);
2803 Record.push_back(I.second.serialize());
2804 }
2805 }
2806 // Update the placeholder.
2807 Record[SizeIdx] = (Record.size() - SizeIdx) / 2;
2808 }
2809 };
2810
2811 AddDiagState(Diag.DiagStatesByLoc.FirstDiagState, isModule);
2812
2813 // Reserve a spot for the number of locations with state transitions.
2814 auto NumLocationsIdx = Record.size();
2815 Record.emplace_back();
2816
2817 // Emit the state transitions.
2818 unsigned NumLocations = 0;
2819 for (auto &FileIDAndFile : Diag.DiagStatesByLoc.Files) {
2820 if (!FileIDAndFile.first.isValid() ||
2821 !FileIDAndFile.second.HasLocalTransitions)
2822 continue;
2823 ++NumLocations;
2824
2825 SourceLocation Loc = Diag.SourceMgr->getComposedLoc(FileIDAndFile.first, 0);
2826 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 2826, __PRETTY_FUNCTION__))
;
2827 AddSourceLocation(Loc, Record);
2828
2829 Record.push_back(FileIDAndFile.second.StateTransitions.size());
2830 for (auto &StatePoint : FileIDAndFile.second.StateTransitions) {
2831 Record.push_back(StatePoint.Offset);
2832 AddDiagState(StatePoint.State, false);
2833 }
2834 }
2835
2836 // Backpatch the number of locations.
2837 Record[NumLocationsIdx] = NumLocations;
2838
2839 // Emit CurDiagStateLoc. Do it last in order to match source order.
2840 //
2841 // This also protects against a hypothetical corner case with simulating
2842 // -Werror settings for implicit modules in the ASTReader, where reading
2843 // CurDiagState out of context could change whether warning pragmas are
2844 // treated as errors.
2845 AddSourceLocation(Diag.DiagStatesByLoc.CurDiagStateLoc, Record);
2846 AddDiagState(Diag.DiagStatesByLoc.CurDiagState, false);
2847
2848 Stream.EmitRecord(DIAG_PRAGMA_MAPPINGS, Record);
2849}
2850
2851//===----------------------------------------------------------------------===//
2852// Type Serialization
2853//===----------------------------------------------------------------------===//
2854
2855/// Write the representation of a type to the AST stream.
2856void ASTWriter::WriteType(QualType T) {
2857 TypeIdx &IdxRef = TypeIdxs[T];
2858 if (IdxRef.getIndex() == 0) // we haven't seen this type before.
2859 IdxRef = TypeIdx(NextTypeID++);
2860 TypeIdx Idx = IdxRef;
2861
2862 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 2862, __PRETTY_FUNCTION__))
;
2863
2864 // Emit the type's representation.
2865 uint64_t Offset = ASTTypeWriter(*this).write(T) - DeclTypesBlockStartOffset;
2866
2867 // Record the offset for this type.
2868 unsigned Index = Idx.getIndex() - FirstTypeID;
2869 if (TypeOffsets.size() == Index)
2870 TypeOffsets.emplace_back(Offset);
2871 else if (TypeOffsets.size() < Index) {
2872 TypeOffsets.resize(Index + 1);
2873 TypeOffsets[Index].setBitOffset(Offset);
2874 } else {
2875 llvm_unreachable("Types emitted in wrong order")::llvm::llvm_unreachable_internal("Types emitted in wrong order"
, "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 2875)
;
2876 }
2877}
2878
2879//===----------------------------------------------------------------------===//
2880// Declaration Serialization
2881//===----------------------------------------------------------------------===//
2882
2883/// Write the block containing all of the declaration IDs
2884/// lexically declared within the given DeclContext.
2885///
2886/// \returns the offset of the DECL_CONTEXT_LEXICAL block within the
2887/// bitstream, or 0 if no block was written.
2888uint64_t ASTWriter::WriteDeclContextLexicalBlock(ASTContext &Context,
2889 DeclContext *DC) {
2890 if (DC->decls_empty())
2891 return 0;
2892
2893 uint64_t Offset = Stream.GetCurrentBitNo();
2894 SmallVector<uint32_t, 128> KindDeclPairs;
2895 for (const auto *D : DC->decls()) {
2896 KindDeclPairs.push_back(D->getKind());
2897 KindDeclPairs.push_back(GetDeclRef(D));
2898 }
2899
2900 ++NumLexicalDeclContexts;
2901 RecordData::value_type Record[] = {DECL_CONTEXT_LEXICAL};
2902 Stream.EmitRecordWithBlob(DeclContextLexicalAbbrev, Record,
2903 bytes(KindDeclPairs));
2904 return Offset;
2905}
2906
2907void ASTWriter::WriteTypeDeclOffsets() {
2908 using namespace llvm;
2909
2910 // Write the type offsets array
2911 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2912 Abbrev->Add(BitCodeAbbrevOp(TYPE_OFFSET));
2913 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of types
2914 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base type index
2915 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // types block
2916 unsigned TypeOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2917 {
2918 RecordData::value_type Record[] = {TYPE_OFFSET, TypeOffsets.size(),
2919 FirstTypeID - NUM_PREDEF_TYPE_IDS};
2920 Stream.EmitRecordWithBlob(TypeOffsetAbbrev, Record, bytes(TypeOffsets));
2921 }
2922
2923 // Write the declaration offsets array
2924 Abbrev = std::make_shared<BitCodeAbbrev>();
2925 Abbrev->Add(BitCodeAbbrevOp(DECL_OFFSET));
2926 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of declarations
2927 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base decl ID
2928 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // declarations block
2929 unsigned DeclOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2930 {
2931 RecordData::value_type Record[] = {DECL_OFFSET, DeclOffsets.size(),
2932 FirstDeclID - NUM_PREDEF_DECL_IDS};
2933 Stream.EmitRecordWithBlob(DeclOffsetAbbrev, Record, bytes(DeclOffsets));
2934 }
2935}
2936
2937void ASTWriter::WriteFileDeclIDsMap() {
2938 using namespace llvm;
2939
2940 SmallVector<std::pair<FileID, DeclIDInFileInfo *>, 64> SortedFileDeclIDs;
2941 SortedFileDeclIDs.reserve(FileDeclIDs.size());
2942 for (const auto &P : FileDeclIDs)
2943 SortedFileDeclIDs.push_back(std::make_pair(P.first, P.second.get()));
2944 llvm::sort(SortedFileDeclIDs, llvm::less_first());
2945
2946 // Join the vectors of DeclIDs from all files.
2947 SmallVector<DeclID, 256> FileGroupedDeclIDs;
2948 for (auto &FileDeclEntry : SortedFileDeclIDs) {
2949 DeclIDInFileInfo &Info = *FileDeclEntry.second;
2950 Info.FirstDeclIndex = FileGroupedDeclIDs.size();
2951 for (auto &LocDeclEntry : Info.DeclIDs)
2952 FileGroupedDeclIDs.push_back(LocDeclEntry.second);
2953 }
2954
2955 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2956 Abbrev->Add(BitCodeAbbrevOp(FILE_SORTED_DECLS));
2957 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2958 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2959 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
2960 RecordData::value_type Record[] = {FILE_SORTED_DECLS,
2961 FileGroupedDeclIDs.size()};
2962 Stream.EmitRecordWithBlob(AbbrevCode, Record, bytes(FileGroupedDeclIDs));
2963}
2964
2965void ASTWriter::WriteComments() {
2966 Stream.EnterSubblock(COMMENTS_BLOCK_ID, 3);
2967 auto _ = llvm::make_scope_exit([this] { Stream.ExitBlock(); });
2968 if (!PP->getPreprocessorOpts().WriteCommentListToPCH)
2969 return;
2970 RecordData Record;
2971 for (const auto &FO : Context->Comments.OrderedComments) {
2972 for (const auto &OC : FO.second) {
2973 const RawComment *I = OC.second;
2974 Record.clear();
2975 AddSourceRange(I->getSourceRange(), Record);
2976 Record.push_back(I->getKind());
2977 Record.push_back(I->isTrailingComment());
2978 Record.push_back(I->isAlmostTrailingComment());
2979 Stream.EmitRecord(COMMENTS_RAW_COMMENT, Record);
2980 }
2981 }
2982}
2983
2984//===----------------------------------------------------------------------===//
2985// Global Method Pool and Selector Serialization
2986//===----------------------------------------------------------------------===//
2987
2988namespace {
2989
2990// Trait used for the on-disk hash table used in the method pool.
2991class ASTMethodPoolTrait {
2992 ASTWriter &Writer;
2993
2994public:
2995 using key_type = Selector;
2996 using key_type_ref = key_type;
2997
2998 struct data_type {
2999 SelectorID ID;
3000 ObjCMethodList Instance, Factory;
3001 };
3002 using data_type_ref = const data_type &;
3003
3004 using hash_value_type = unsigned;
3005 using offset_type = unsigned;
3006
3007 explicit ASTMethodPoolTrait(ASTWriter &Writer) : Writer(Writer) {}
3008
3009 static hash_value_type ComputeHash(Selector Sel) {
3010 return serialization::ComputeHash(Sel);
3011 }
3012
3013 std::pair<unsigned, unsigned>
3014 EmitKeyDataLength(raw_ostream& Out, Selector Sel,
3015 data_type_ref Methods) {
3016 unsigned KeyLen = 2 + (Sel.getNumArgs()? Sel.getNumArgs() * 4 : 4);
3017 unsigned DataLen = 4 + 2 + 2; // 2 bytes for each of the method counts
3018 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3019 Method = Method->getNext())
3020 if (Method->getMethod())
3021 DataLen += 4;
3022 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3023 Method = Method->getNext())
3024 if (Method->getMethod())
3025 DataLen += 4;
3026 return emitULEBKeyDataLength(KeyLen, DataLen, Out);
3027 }
3028
3029 void EmitKey(raw_ostream& Out, Selector Sel, unsigned) {
3030 using namespace llvm::support;
3031
3032 endian::Writer LE(Out, little);
3033 uint64_t Start = Out.tell();
3034 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3034, __PRETTY_FUNCTION__))
;
3035 Writer.SetSelectorOffset(Sel, Start);
3036 unsigned N = Sel.getNumArgs();
3037 LE.write<uint16_t>(N);
3038 if (N == 0)
3039 N = 1;
3040 for (unsigned I = 0; I != N; ++I)
3041 LE.write<uint32_t>(
3042 Writer.getIdentifierRef(Sel.getIdentifierInfoForSlot(I)));
3043 }
3044
3045 void EmitData(raw_ostream& Out, key_type_ref,
3046 data_type_ref Methods, unsigned DataLen) {
3047 using namespace llvm::support;
3048
3049 endian::Writer LE(Out, little);
3050 uint64_t Start = Out.tell(); (void)Start;
3051 LE.write<uint32_t>(Methods.ID);
3052 unsigned NumInstanceMethods = 0;
3053 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3054 Method = Method->getNext())
3055 if (Method->getMethod())
3056 ++NumInstanceMethods;
3057
3058 unsigned NumFactoryMethods = 0;
3059 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3060 Method = Method->getNext())
3061 if (Method->getMethod())
3062 ++NumFactoryMethods;
3063
3064 unsigned InstanceBits = Methods.Instance.getBits();
3065 assert(InstanceBits < 4)((InstanceBits < 4) ? static_cast<void> (0) : __assert_fail
("InstanceBits < 4", "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3065, __PRETTY_FUNCTION__))
;
3066 unsigned InstanceHasMoreThanOneDeclBit =
3067 Methods.Instance.hasMoreThanOneDecl();
3068 unsigned FullInstanceBits = (NumInstanceMethods << 3) |
3069 (InstanceHasMoreThanOneDeclBit << 2) |
3070 InstanceBits;
3071 unsigned FactoryBits = Methods.Factory.getBits();
3072 assert(FactoryBits < 4)((FactoryBits < 4) ? static_cast<void> (0) : __assert_fail
("FactoryBits < 4", "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3072, __PRETTY_FUNCTION__))
;
3073 unsigned FactoryHasMoreThanOneDeclBit =
3074 Methods.Factory.hasMoreThanOneDecl();
3075 unsigned FullFactoryBits = (NumFactoryMethods << 3) |
3076 (FactoryHasMoreThanOneDeclBit << 2) |
3077 FactoryBits;
3078 LE.write<uint16_t>(FullInstanceBits);
3079 LE.write<uint16_t>(FullFactoryBits);
3080 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3081 Method = Method->getNext())
3082 if (Method->getMethod())
3083 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3084 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3085 Method = Method->getNext())
3086 if (Method->getMethod())
3087 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3088
3089 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3089, __PRETTY_FUNCTION__))
;
3090 }
3091};
3092
3093} // namespace
3094
3095/// Write ObjC data: selectors and the method pool.
3096///
3097/// The method pool contains both instance and factory methods, stored
3098/// in an on-disk hash table indexed by the selector. The hash table also
3099/// contains an empty entry for every other selector known to Sema.
3100void ASTWriter::WriteSelectors(Sema &SemaRef) {
3101 using namespace llvm;
3102
3103 // Do we have to do anything at all?
3104 if (SemaRef.MethodPool.empty() && SelectorIDs.empty())
3105 return;
3106 unsigned NumTableEntries = 0;
3107 // Create and write out the blob that contains selectors and the method pool.
3108 {
3109 llvm::OnDiskChainedHashTableGenerator<ASTMethodPoolTrait> Generator;
3110 ASTMethodPoolTrait Trait(*this);
3111
3112 // Create the on-disk hash table representation. We walk through every
3113 // selector we've seen and look it up in the method pool.
3114 SelectorOffsets.resize(NextSelectorID - FirstSelectorID);
3115 for (auto &SelectorAndID : SelectorIDs) {
3116 Selector S = SelectorAndID.first;
3117 SelectorID ID = SelectorAndID.second;
3118 Sema::GlobalMethodPool::iterator F = SemaRef.MethodPool.find(S);
3119 ASTMethodPoolTrait::data_type Data = {
3120 ID,
3121 ObjCMethodList(),
3122 ObjCMethodList()
3123 };
3124 if (F != SemaRef.MethodPool.end()) {
3125 Data.Instance = F->second.first;
3126 Data.Factory = F->second.second;
3127 }
3128 // Only write this selector if it's not in an existing AST or something
3129 // changed.
3130 if (Chain && ID < FirstSelectorID) {
3131 // Selector already exists. Did it change?
3132 bool changed = false;
3133 for (ObjCMethodList *M = &Data.Instance;
3134 !changed && M && M->getMethod(); M = M->getNext()) {
3135 if (!M->getMethod()->isFromASTFile())
3136 changed = true;
3137 }
3138 for (ObjCMethodList *M = &Data.Factory; !changed && M && M->getMethod();
3139 M = M->getNext()) {
3140 if (!M->getMethod()->isFromASTFile())
3141 changed = true;
3142 }
3143 if (!changed)
3144 continue;
3145 } else if (Data.Instance.getMethod() || Data.Factory.getMethod()) {
3146 // A new method pool entry.
3147 ++NumTableEntries;
3148 }
3149 Generator.insert(S, Data, Trait);
3150 }
3151
3152 // Create the on-disk hash table in a buffer.
3153 SmallString<4096> MethodPool;
3154 uint32_t BucketOffset;
3155 {
3156 using namespace llvm::support;
3157
3158 ASTMethodPoolTrait Trait(*this);
3159 llvm::raw_svector_ostream Out(MethodPool);
3160 // Make sure that no bucket is at offset 0
3161 endian::write<uint32_t>(Out, 0, little);
3162 BucketOffset = Generator.Emit(Out, Trait);
3163 }
3164
3165 // Create a blob abbreviation
3166 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3167 Abbrev->Add(BitCodeAbbrevOp(METHOD_POOL));
3168 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3169 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3170 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3171 unsigned MethodPoolAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3172
3173 // Write the method pool
3174 {
3175 RecordData::value_type Record[] = {METHOD_POOL, BucketOffset,
3176 NumTableEntries};
3177 Stream.EmitRecordWithBlob(MethodPoolAbbrev, Record, MethodPool);
3178 }
3179
3180 // Create a blob abbreviation for the selector table offsets.
3181 Abbrev = std::make_shared<BitCodeAbbrev>();
3182 Abbrev->Add(BitCodeAbbrevOp(SELECTOR_OFFSETS));
3183 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size
3184 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3185 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3186 unsigned SelectorOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3187
3188 // Write the selector offsets table.
3189 {
3190 RecordData::value_type Record[] = {
3191 SELECTOR_OFFSETS, SelectorOffsets.size(),
3192 FirstSelectorID - NUM_PREDEF_SELECTOR_IDS};
3193 Stream.EmitRecordWithBlob(SelectorOffsetAbbrev, Record,
3194 bytes(SelectorOffsets));
3195 }
3196 }
3197}
3198
3199/// Write the selectors referenced in @selector expression into AST file.
3200void ASTWriter::WriteReferencedSelectorsPool(Sema &SemaRef) {
3201 using namespace llvm;
3202
3203 if (SemaRef.ReferencedSelectors.empty())
3204 return;
3205
3206 RecordData Record;
3207 ASTRecordWriter Writer(*this, Record);
3208
3209 // Note: this writes out all references even for a dependent AST. But it is
3210 // very tricky to fix, and given that @selector shouldn't really appear in
3211 // headers, probably not worth it. It's not a correctness issue.
3212 for (auto &SelectorAndLocation : SemaRef.ReferencedSelectors) {
3213 Selector Sel = SelectorAndLocation.first;
3214 SourceLocation Loc = SelectorAndLocation.second;
3215 Writer.AddSelectorRef(Sel);
3216 Writer.AddSourceLocation(Loc);
3217 }
3218 Writer.Emit(REFERENCED_SELECTOR_POOL);
3219}
3220
3221//===----------------------------------------------------------------------===//
3222// Identifier Table Serialization
3223//===----------------------------------------------------------------------===//
3224
3225/// Determine the declaration that should be put into the name lookup table to
3226/// represent the given declaration in this module. This is usually D itself,
3227/// but if D was imported and merged into a local declaration, we want the most
3228/// recent local declaration instead. The chosen declaration will be the most
3229/// recent declaration in any module that imports this one.
3230static NamedDecl *getDeclForLocalLookup(const LangOptions &LangOpts,
3231 NamedDecl *D) {
3232 if (!LangOpts.Modules || !D->isFromASTFile())
3233 return D;
3234
3235 if (Decl *Redecl = D->getPreviousDecl()) {
3236 // For Redeclarable decls, a prior declaration might be local.
3237 for (; Redecl; Redecl = Redecl->getPreviousDecl()) {
3238 // If we find a local decl, we're done.
3239 if (!Redecl->isFromASTFile()) {
3240 // Exception: in very rare cases (for injected-class-names), not all
3241 // redeclarations are in the same semantic context. Skip ones in a
3242 // different context. They don't go in this lookup table at all.
3243 if (!Redecl->getDeclContext()->getRedeclContext()->Equals(
3244 D->getDeclContext()->getRedeclContext()))
3245 continue;
3246 return cast<NamedDecl>(Redecl);
3247 }
3248
3249 // If we find a decl from a (chained-)PCH stop since we won't find a
3250 // local one.
3251 if (Redecl->getOwningModuleID() == 0)
3252 break;
3253 }
3254 } else if (Decl *First = D->getCanonicalDecl()) {
3255 // For Mergeable decls, the first decl might be local.
3256 if (!First->isFromASTFile())
3257 return cast<NamedDecl>(First);
3258 }
3259
3260 // All declarations are imported. Our most recent declaration will also be
3261 // the most recent one in anyone who imports us.
3262 return D;
3263}
3264
3265namespace {
3266
3267class ASTIdentifierTableTrait {
3268 ASTWriter &Writer;
3269 Preprocessor &PP;
3270 IdentifierResolver &IdResolver;
3271 bool IsModule;
3272 bool NeedDecls;
3273 ASTWriter::RecordData *InterestingIdentifierOffsets;
3274
3275 /// Determines whether this is an "interesting" identifier that needs a
3276 /// full IdentifierInfo structure written into the hash table. Notably, this
3277 /// doesn't check whether the name has macros defined; use PublicMacroIterator
3278 /// to check that.
3279 bool isInterestingIdentifier(const IdentifierInfo *II, uint64_t MacroOffset) {
3280 if (MacroOffset || II->isPoisoned() ||
3281 (!IsModule && II->getObjCOrBuiltinID()) ||
3282 II->hasRevertedTokenIDToIdentifier() ||
3283 (NeedDecls && II->getFETokenInfo()))
3284 return true;
3285
3286 return false;
3287 }
3288
3289public:
3290 using key_type = IdentifierInfo *;
3291 using key_type_ref = key_type;
3292
3293 using data_type = IdentID;
3294 using data_type_ref = data_type;
3295
3296 using hash_value_type = unsigned;
3297 using offset_type = unsigned;
3298
3299 ASTIdentifierTableTrait(ASTWriter &Writer, Preprocessor &PP,
3300 IdentifierResolver &IdResolver, bool IsModule,
3301 ASTWriter::RecordData *InterestingIdentifierOffsets)
3302 : Writer(Writer), PP(PP), IdResolver(IdResolver), IsModule(IsModule),
3303 NeedDecls(!IsModule || !Writer.getLangOpts().CPlusPlus),
3304 InterestingIdentifierOffsets(InterestingIdentifierOffsets) {}
3305
3306 bool needDecls() const { return NeedDecls; }
3307
3308 static hash_value_type ComputeHash(const IdentifierInfo* II) {
3309 return llvm::djbHash(II->getName());
3310 }
3311
3312 bool isInterestingIdentifier(const IdentifierInfo *II) {
3313 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3314 return isInterestingIdentifier(II, MacroOffset);
3315 }
3316
3317 bool isInterestingNonMacroIdentifier(const IdentifierInfo *II) {
3318 return isInterestingIdentifier(II, 0);
3319 }
3320
3321 std::pair<unsigned, unsigned>
3322 EmitKeyDataLength(raw_ostream& Out, IdentifierInfo* II, IdentID ID) {
3323 // Record the location of the identifier data. This is used when generating
3324 // the mapping from persistent IDs to strings.
3325 Writer.SetIdentifierOffset(II, Out.tell());
3326
3327 // Emit the offset of the key/data length information to the interesting
3328 // identifiers table if necessary.
3329 if (InterestingIdentifierOffsets && isInterestingIdentifier(II))
3330 InterestingIdentifierOffsets->push_back(Out.tell());
3331
3332 unsigned KeyLen = II->getLength() + 1;
3333 unsigned DataLen = 4; // 4 bytes for the persistent ID << 1
3334 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3335 if (isInterestingIdentifier(II, MacroOffset)) {
3336 DataLen += 2; // 2 bytes for builtin ID
3337 DataLen += 2; // 2 bytes for flags
3338 if (MacroOffset)
3339 DataLen += 4; // MacroDirectives offset.
3340
3341 if (NeedDecls) {
3342 for (IdentifierResolver::iterator D = IdResolver.begin(II),
3343 DEnd = IdResolver.end();
3344 D != DEnd; ++D)
3345 DataLen += 4;
3346 }
3347 }
3348 return emitULEBKeyDataLength(KeyLen, DataLen, Out);
3349 }
3350
3351 void EmitKey(raw_ostream& Out, const IdentifierInfo* II,
3352 unsigned KeyLen) {
3353 Out.write(II->getNameStart(), KeyLen);
3354 }
3355
3356 void EmitData(raw_ostream& Out, IdentifierInfo* II,
3357 IdentID ID, unsigned) {
3358 using namespace llvm::support;
3359
3360 endian::Writer LE(Out, little);
3361
3362 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3363 if (!isInterestingIdentifier(II, MacroOffset)) {
3364 LE.write<uint32_t>(ID << 1);
3365 return;
3366 }
3367
3368 LE.write<uint32_t>((ID << 1) | 0x01);
3369 uint32_t Bits = (uint32_t)II->getObjCOrBuiltinID();
3370 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3370, __PRETTY_FUNCTION__))
;
3371 LE.write<uint16_t>(Bits);
3372 Bits = 0;
3373 bool HadMacroDefinition = MacroOffset != 0;
3374 Bits = (Bits << 1) | unsigned(HadMacroDefinition);
3375 Bits = (Bits << 1) | unsigned(II->isExtensionToken());
3376 Bits = (Bits << 1) | unsigned(II->isPoisoned());
3377 Bits = (Bits << 1) | unsigned(II->hasRevertedTokenIDToIdentifier());
3378 Bits = (Bits << 1) | unsigned(II->isCPlusPlusOperatorKeyword());
3379 LE.write<uint16_t>(Bits);
3380
3381 if (HadMacroDefinition)
3382 LE.write<uint32_t>(MacroOffset);
3383
3384 if (NeedDecls) {
3385 // Emit the declaration IDs in reverse order, because the
3386 // IdentifierResolver provides the declarations as they would be
3387 // visible (e.g., the function "stat" would come before the struct
3388 // "stat"), but the ASTReader adds declarations to the end of the list
3389 // (so we need to see the struct "stat" before the function "stat").
3390 // Only emit declarations that aren't from a chained PCH, though.
3391 SmallVector<NamedDecl *, 16> Decls(IdResolver.begin(II),
3392 IdResolver.end());
3393 for (SmallVectorImpl<NamedDecl *>::reverse_iterator D = Decls.rbegin(),
3394 DEnd = Decls.rend();
3395 D != DEnd; ++D)
3396 LE.write<uint32_t>(
3397 Writer.getDeclID(getDeclForLocalLookup(PP.getLangOpts(), *D)));
3398 }
3399 }
3400};
3401
3402} // namespace
3403
3404/// Write the identifier table into the AST file.
3405///
3406/// The identifier table consists of a blob containing string data
3407/// (the actual identifiers themselves) and a separate "offsets" index
3408/// that maps identifier IDs to locations within the blob.
3409void ASTWriter::WriteIdentifierTable(Preprocessor &PP,
3410 IdentifierResolver &IdResolver,
3411 bool IsModule) {
3412 using namespace llvm;
3413
3414 RecordData InterestingIdents;
3415
3416 // Create and write out the blob that contains the identifier
3417 // strings.
3418 {
3419 llvm::OnDiskChainedHashTableGenerator<ASTIdentifierTableTrait> Generator;
3420 ASTIdentifierTableTrait Trait(
3421 *this, PP, IdResolver, IsModule,
3422 (getLangOpts().CPlusPlus && IsModule) ? &InterestingIdents : nullptr);
3423
3424 // Look for any identifiers that were named while processing the
3425 // headers, but are otherwise not needed. We add these to the hash
3426 // table to enable checking of the predefines buffer in the case
3427 // where the user adds new macro definitions when building the AST
3428 // file.
3429 SmallVector<const IdentifierInfo *, 128> IIs;
3430 for (const auto &ID : PP.getIdentifierTable())
3431 IIs.push_back(ID.second);
3432 // Sort the identifiers lexicographically before getting them references so
3433 // that their order is stable.
3434 llvm::sort(IIs, llvm::deref<std::less<>>());
3435 for (const IdentifierInfo *II : IIs)
3436 if (Trait.isInterestingNonMacroIdentifier(II))
3437 getIdentifierRef(II);
3438
3439 // Create the on-disk hash table representation. We only store offsets
3440 // for identifiers that appear here for the first time.
3441 IdentifierOffsets.resize(NextIdentID - FirstIdentID);
3442 for (auto IdentIDPair : IdentifierIDs) {
3443 auto *II = const_cast<IdentifierInfo *>(IdentIDPair.first);
3444 IdentID ID = IdentIDPair.second;
3445 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3445, __PRETTY_FUNCTION__))
;
3446 // Write out identifiers if either the ID is local or the identifier has
3447 // changed since it was loaded.
3448 if (ID >= FirstIdentID || !Chain || !II->isFromAST()
3449 || II->hasChangedSinceDeserialization() ||
3450 (Trait.needDecls() &&
3451 II->hasFETokenInfoChangedSinceDeserialization()))
3452 Generator.insert(II, ID, Trait);
3453 }
3454
3455 // Create the on-disk hash table in a buffer.
3456 SmallString<4096> IdentifierTable;
3457 uint32_t BucketOffset;
3458 {
3459 using namespace llvm::support;
3460
3461 llvm::raw_svector_ostream Out(IdentifierTable);
3462 // Make sure that no bucket is at offset 0
3463 endian::write<uint32_t>(Out, 0, little);
3464 BucketOffset = Generator.Emit(Out, Trait);
3465 }
3466
3467 // Create a blob abbreviation
3468 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3469 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_TABLE));
3470 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3471 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3472 unsigned IDTableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3473
3474 // Write the identifier table
3475 RecordData::value_type Record[] = {IDENTIFIER_TABLE, BucketOffset};
3476 Stream.EmitRecordWithBlob(IDTableAbbrev, Record, IdentifierTable);
3477 }
3478
3479 // Write the offsets table for identifier IDs.
3480 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3481 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_OFFSET));
3482 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of identifiers
3483 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3484 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3485 unsigned IdentifierOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3486
3487#ifndef NDEBUG
3488 for (unsigned I = 0, N = IdentifierOffsets.size(); I != N; ++I)
3489 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3489, __PRETTY_FUNCTION__))
;
3490#endif
3491
3492 RecordData::value_type Record[] = {IDENTIFIER_OFFSET,
3493 IdentifierOffsets.size(),
3494 FirstIdentID - NUM_PREDEF_IDENT_IDS};
3495 Stream.EmitRecordWithBlob(IdentifierOffsetAbbrev, Record,
3496 bytes(IdentifierOffsets));
3497
3498 // In C++, write the list of interesting identifiers (those that are
3499 // defined as macros, poisoned, or similar unusual things).
3500 if (!InterestingIdents.empty())
3501 Stream.EmitRecord(INTERESTING_IDENTIFIERS, InterestingIdents);
3502}
3503
3504//===----------------------------------------------------------------------===//
3505// DeclContext's Name Lookup Table Serialization
3506//===----------------------------------------------------------------------===//
3507
3508namespace {
3509
3510// Trait used for the on-disk hash table used in the method pool.
3511class ASTDeclContextNameLookupTrait {
3512 ASTWriter &Writer;
3513 llvm::SmallVector<DeclID, 64> DeclIDs;
3514
3515public:
3516 using key_type = DeclarationNameKey;
3517 using key_type_ref = key_type;
3518
3519 /// A start and end index into DeclIDs, representing a sequence of decls.
3520 using data_type = std::pair<unsigned, unsigned>;
3521 using data_type_ref = const data_type &;
3522
3523 using hash_value_type = unsigned;
3524 using offset_type = unsigned;
3525
3526 explicit ASTDeclContextNameLookupTrait(ASTWriter &Writer) : Writer(Writer) {}
3527
3528 template<typename Coll>
3529 data_type getData(const Coll &Decls) {
3530 unsigned Start = DeclIDs.size();
3531 for (NamedDecl *D : Decls) {
3532 DeclIDs.push_back(
3533 Writer.GetDeclRef(getDeclForLocalLookup(Writer.getLangOpts(), D)));
3534 }
3535 return std::make_pair(Start, DeclIDs.size());
3536 }
3537
3538 data_type ImportData(const reader::ASTDeclContextNameLookupTrait::data_type &FromReader) {
3539 unsigned Start = DeclIDs.size();
3540 for (auto ID : FromReader)
3541 DeclIDs.push_back(ID);
3542 return std::make_pair(Start, DeclIDs.size());
3543 }
3544
3545 static bool EqualKey(key_type_ref a, key_type_ref b) {
3546 return a == b;
3547 }
3548
3549 hash_value_type ComputeHash(DeclarationNameKey Name) {
3550 return Name.getHash();
3551 }
3552
3553 void EmitFileRef(raw_ostream &Out, ModuleFile *F) const {
3554 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3555, __PRETTY_FUNCTION__))
3555 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3555, __PRETTY_FUNCTION__))
;
3556
3557 using namespace llvm::support;
3558
3559 endian::write<uint32_t>(Out, Writer.getChain()->getModuleFileID(F), little);
3560 }
3561
3562 std::pair<unsigned, unsigned> EmitKeyDataLength(raw_ostream &Out,
3563 DeclarationNameKey Name,
3564 data_type_ref Lookup) {
3565 unsigned KeyLen = 1;
3566 switch (Name.getKind()) {
3567 case DeclarationName::Identifier:
3568 case DeclarationName::ObjCZeroArgSelector:
3569 case DeclarationName::ObjCOneArgSelector:
3570 case DeclarationName::ObjCMultiArgSelector:
3571 case DeclarationName::CXXLiteralOperatorName:
3572 case DeclarationName::CXXDeductionGuideName:
3573 KeyLen += 4;
3574 break;
3575 case DeclarationName::CXXOperatorName:
3576 KeyLen += 1;
3577 break;
3578 case DeclarationName::CXXConstructorName:
3579 case DeclarationName::CXXDestructorName:
3580 case DeclarationName::CXXConversionFunctionName:
3581 case DeclarationName::CXXUsingDirective:
3582 break;
3583 }
3584
3585 // 4 bytes for each DeclID.
3586 unsigned DataLen = 4 * (Lookup.second - Lookup.first);
3587
3588 return emitULEBKeyDataLength(KeyLen, DataLen, Out);
3589 }
3590
3591 void EmitKey(raw_ostream &Out, DeclarationNameKey Name, unsigned) {
3592 using namespace llvm::support;
3593
3594 endian::Writer LE(Out, little);
3595 LE.write<uint8_t>(Name.getKind());
3596 switch (Name.getKind()) {
3597 case DeclarationName::Identifier:
3598 case DeclarationName::CXXLiteralOperatorName:
3599 case DeclarationName::CXXDeductionGuideName:
3600 LE.write<uint32_t>(Writer.getIdentifierRef(Name.getIdentifier()));
3601 return;
3602 case DeclarationName::ObjCZeroArgSelector:
3603 case DeclarationName::ObjCOneArgSelector:
3604 case DeclarationName::ObjCMultiArgSelector:
3605 LE.write<uint32_t>(Writer.getSelectorRef(Name.getSelector()));
3606 return;
3607 case DeclarationName::CXXOperatorName:
3608 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3609, __PRETTY_FUNCTION__))
3609 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3609, __PRETTY_FUNCTION__))
;
3610 LE.write<uint8_t>(Name.getOperatorKind());
3611 return;
3612 case DeclarationName::CXXConstructorName:
3613 case DeclarationName::CXXDestructorName:
3614 case DeclarationName::CXXConversionFunctionName:
3615 case DeclarationName::CXXUsingDirective:
3616 return;
3617 }
3618
3619 llvm_unreachable("Invalid name kind?")::llvm::llvm_unreachable_internal("Invalid name kind?", "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3619)
;
3620 }
3621
3622 void EmitData(raw_ostream &Out, key_type_ref, data_type Lookup,
3623 unsigned DataLen) {
3624 using namespace llvm::support;
3625
3626 endian::Writer LE(Out, little);
3627 uint64_t Start = Out.tell(); (void)Start;
3628 for (unsigned I = Lookup.first, N = Lookup.second; I != N; ++I)
3629 LE.write<uint32_t>(DeclIDs[I]);
3630 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3630, __PRETTY_FUNCTION__))
;
3631 }
3632};
3633
3634} // namespace
3635
3636bool ASTWriter::isLookupResultExternal(StoredDeclsList &Result,
3637 DeclContext *DC) {
3638 return Result.hasExternalDecls() &&
3639 DC->hasNeedToReconcileExternalVisibleStorage();
3640}
3641
3642bool ASTWriter::isLookupResultEntirelyExternal(StoredDeclsList &Result,
3643 DeclContext *DC) {
3644 for (auto *D : Result.getLookupResult())
3645 if (!getDeclForLocalLookup(getLangOpts(), D)->isFromASTFile())
3646 return false;
3647
3648 return true;
3649}
3650
3651void
3652ASTWriter::GenerateNameLookupTable(const DeclContext *ConstDC,
3653 llvm::SmallVectorImpl<char> &LookupTable) {
3654 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3656, __PRETTY_FUNCTION__))
3655 !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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3656, __PRETTY_FUNCTION__))
3656 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3656, __PRETTY_FUNCTION__))
;
3657
3658 // FIXME: We need to build the lookups table, which is logically const.
3659 auto *DC = const_cast<DeclContext*>(ConstDC);
3660 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3660, __PRETTY_FUNCTION__))
;
3661
3662 // Create the on-disk hash table representation.
3663 MultiOnDiskHashTableGenerator<reader::ASTDeclContextNameLookupTrait,
3664 ASTDeclContextNameLookupTrait> Generator;
3665 ASTDeclContextNameLookupTrait Trait(*this);
3666
3667 // The first step is to collect the declaration names which we need to
3668 // serialize into the name lookup table, and to collect them in a stable
3669 // order.
3670 SmallVector<DeclarationName, 16> Names;
3671
3672 // We also build up small sets of the constructor and conversion function
3673 // names which are visible.
3674 llvm::SmallPtrSet<DeclarationName, 8> ConstructorNameSet, ConversionNameSet;
3675
3676 for (auto &Lookup : *DC->buildLookup()) {
3677 auto &Name = Lookup.first;
3678 auto &Result = Lookup.second;
3679
3680 // If there are no local declarations in our lookup result, we
3681 // don't need to write an entry for the name at all. If we can't
3682 // write out a lookup set without performing more deserialization,
3683 // just skip this entry.
3684 if (isLookupResultExternal(Result, DC) &&
3685 isLookupResultEntirelyExternal(Result, DC))
3686 continue;
3687
3688 // We also skip empty results. If any of the results could be external and
3689 // the currently available results are empty, then all of the results are
3690 // external and we skip it above. So the only way we get here with an empty
3691 // results is when no results could have been external *and* we have
3692 // external results.
3693 //
3694 // FIXME: While we might want to start emitting on-disk entries for negative
3695 // lookups into a decl context as an optimization, today we *have* to skip
3696 // them because there are names with empty lookup results in decl contexts
3697 // which we can't emit in any stable ordering: we lookup constructors and
3698 // conversion functions in the enclosing namespace scope creating empty
3699 // results for them. This in almost certainly a bug in Clang's name lookup,
3700 // but that is likely to be hard or impossible to fix and so we tolerate it
3701 // here by omitting lookups with empty results.
3702 if (Lookup.second.getLookupResult().empty())
3703 continue;
3704
3705 switch (Lookup.first.getNameKind()) {
3706 default:
3707 Names.push_back(Lookup.first);
3708 break;
3709
3710 case DeclarationName::CXXConstructorName:
3711 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3712, __PRETTY_FUNCTION__))
3712 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3712, __PRETTY_FUNCTION__))
;
3713 ConstructorNameSet.insert(Name);
3714 break;
3715
3716 case DeclarationName::CXXConversionFunctionName:
3717 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3718, __PRETTY_FUNCTION__))
3718 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3718, __PRETTY_FUNCTION__))
;
3719 ConversionNameSet.insert(Name);
3720 break;
3721 }
3722 }
3723
3724 // Sort the names into a stable order.
3725 llvm::sort(Names);
3726
3727 if (auto *D = dyn_cast<CXXRecordDecl>(DC)) {
3728 // We need to establish an ordering of constructor and conversion function
3729 // names, and they don't have an intrinsic ordering.
3730
3731 // First we try the easy case by forming the current context's constructor
3732 // name and adding that name first. This is a very useful optimization to
3733 // avoid walking the lexical declarations in many cases, and it also
3734 // handles the only case where a constructor name can come from some other
3735 // lexical context -- when that name is an implicit constructor merged from
3736 // another declaration in the redecl chain. Any non-implicit constructor or
3737 // conversion function which doesn't occur in all the lexical contexts
3738 // would be an ODR violation.
3739 auto ImplicitCtorName = Context->DeclarationNames.getCXXConstructorName(
3740 Context->getCanonicalType(Context->getRecordType(D)));
3741 if (ConstructorNameSet.erase(ImplicitCtorName))
3742 Names.push_back(ImplicitCtorName);
3743
3744 // If we still have constructors or conversion functions, we walk all the
3745 // names in the decl and add the constructors and conversion functions
3746 // which are visible in the order they lexically occur within the context.
3747 if (!ConstructorNameSet.empty() || !ConversionNameSet.empty())
3748 for (Decl *ChildD : cast<CXXRecordDecl>(DC)->decls())
3749 if (auto *ChildND = dyn_cast<NamedDecl>(ChildD)) {
3750 auto Name = ChildND->getDeclName();
3751 switch (Name.getNameKind()) {
3752 default:
3753 continue;
3754
3755 case DeclarationName::CXXConstructorName:
3756 if (ConstructorNameSet.erase(Name))
3757 Names.push_back(Name);
3758 break;
3759
3760 case DeclarationName::CXXConversionFunctionName:
3761 if (ConversionNameSet.erase(Name))
3762 Names.push_back(Name);
3763 break;
3764 }
3765
3766 if (ConstructorNameSet.empty() && ConversionNameSet.empty())
3767 break;
3768 }
3769
3770 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3772, __PRETTY_FUNCTION__))
3771 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3772, __PRETTY_FUNCTION__))
3772 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3772, __PRETTY_FUNCTION__))
;
3773 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3775, __PRETTY_FUNCTION__))
3774 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3775, __PRETTY_FUNCTION__))
3775 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3775, __PRETTY_FUNCTION__))
;
3776 }
3777
3778 // Next we need to do a lookup with each name into this decl context to fully
3779 // populate any results from external sources. We don't actually use the
3780 // results of these lookups because we only want to use the results after all
3781 // results have been loaded and the pointers into them will be stable.
3782 for (auto &Name : Names)
3783 DC->lookup(Name);
3784
3785 // Now we need to insert the results for each name into the hash table. For
3786 // constructor names and conversion function names, we actually need to merge
3787 // all of the results for them into one list of results each and insert
3788 // those.
3789 SmallVector<NamedDecl *, 8> ConstructorDecls;
3790 SmallVector<NamedDecl *, 8> ConversionDecls;
3791
3792 // Now loop over the names, either inserting them or appending for the two
3793 // special cases.
3794 for (auto &Name : Names) {
3795 DeclContext::lookup_result Result = DC->noload_lookup(Name);
3796
3797 switch (Name.getNameKind()) {
3798 default:
3799 Generator.insert(Name, Trait.getData(Result), Trait);
3800 break;
3801
3802 case DeclarationName::CXXConstructorName:
3803 ConstructorDecls.append(Result.begin(), Result.end());
3804 break;
3805
3806 case DeclarationName::CXXConversionFunctionName:
3807 ConversionDecls.append(Result.begin(), Result.end());
3808 break;
3809 }
3810 }
3811
3812 // Handle our two special cases if we ended up having any. We arbitrarily use
3813 // the first declaration's name here because the name itself isn't part of
3814 // the key, only the kind of name is used.
3815 if (!ConstructorDecls.empty())
3816 Generator.insert(ConstructorDecls.front()->getDeclName(),
3817 Trait.getData(ConstructorDecls), Trait);
3818 if (!ConversionDecls.empty())
3819 Generator.insert(ConversionDecls.front()->getDeclName(),
3820 Trait.getData(ConversionDecls), Trait);
3821
3822 // Create the on-disk hash table. Also emit the existing imported and
3823 // merged table if there is one.
3824 auto *Lookups = Chain ? Chain->getLoadedLookupTables(DC) : nullptr;
3825 Generator.emit(LookupTable, Trait, Lookups ? &Lookups->Table : nullptr);
3826}
3827
3828/// Write the block containing all of the declaration IDs
3829/// visible from the given DeclContext.
3830///
3831/// \returns the offset of the DECL_CONTEXT_VISIBLE block within the
3832/// bitstream, or 0 if no block was written.
3833uint64_t ASTWriter::WriteDeclContextVisibleBlock(ASTContext &Context,
3834 DeclContext *DC) {
3835 // If we imported a key declaration of this namespace, write the visible
3836 // lookup results as an update record for it rather than including them
3837 // on this declaration. We will only look at key declarations on reload.
3838 if (isa<NamespaceDecl>(DC) && Chain &&
3839 Chain->getKeyDeclaration(cast<Decl>(DC))->isFromASTFile()) {
3840 // Only do this once, for the first local declaration of the namespace.
3841 for (auto *Prev = cast<NamespaceDecl>(DC)->getPreviousDecl(); Prev;
3842 Prev = Prev->getPreviousDecl())
3843 if (!Prev->isFromASTFile())
3844 return 0;
3845
3846 // Note that we need to emit an update record for the primary context.
3847 UpdatedDeclContexts.insert(DC->getPrimaryContext());
3848
3849 // Make sure all visible decls are written. They will be recorded later. We
3850 // do this using a side data structure so we can sort the names into
3851 // a deterministic order.
3852 StoredDeclsMap *Map = DC->getPrimaryContext()->buildLookup();
3853 SmallVector<std::pair<DeclarationName, DeclContext::lookup_result>, 16>
3854 LookupResults;
3855 if (Map) {
3856 LookupResults.reserve(Map->size());
3857 for (auto &Entry : *Map)
3858 LookupResults.push_back(
3859 std::make_pair(Entry.first, Entry.second.getLookupResult()));
3860 }
3861
3862 llvm::sort(LookupResults, llvm::less_first());
3863 for (auto &NameAndResult : LookupResults) {
3864 DeclarationName Name = NameAndResult.first;
3865 DeclContext::lookup_result Result = NameAndResult.second;
3866 if (Name.getNameKind() == DeclarationName::CXXConstructorName ||
3867 Name.getNameKind() == DeclarationName::CXXConversionFunctionName) {
3868 // We have to work around a name lookup bug here where negative lookup
3869 // results for these names get cached in namespace lookup tables (these
3870 // names should never be looked up in a namespace).
3871 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3872, __PRETTY_FUNCTION__))
3872 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 3872, __PRETTY_FUNCTION__))
;
3873 continue;
3874 }
3875
3876 for (NamedDecl *ND : Result)
3877 if (!ND->isFromASTFile())
3878 GetDeclRef(ND);
3879 }
3880
3881 return 0;
3882 }
3883
3884 if (DC->getPrimaryContext() != DC)
3885 return 0;
3886
3887 // Skip contexts which don't support name lookup.
3888 if (!DC->isLookupContext())
3889 return 0;
3890
3891 // If not in C++, we perform name lookup for the translation unit via the
3892 // IdentifierInfo chains, don't bother to build a visible-declarations table.
3893 if (DC->isTranslationUnit() && !Context.getLangOpts().CPlusPlus)
3894 return 0;
3895
3896 // Serialize the contents of the mapping used for lookup. Note that,
3897 // although we have two very different code paths, the serialized
3898 // representation is the same for both cases: a declaration name,
3899 // followed by a size, followed by references to the visible
3900 // declarations that have that name.
3901 uint64_t Offset = Stream.GetCurrentBitNo();
3902 StoredDeclsMap *Map = DC->buildLookup();
3903 if (!Map || Map->empty())
3904 return 0;
3905
3906 // Create the on-disk hash table in a buffer.
3907 SmallString<4096> LookupTable;
3908 GenerateNameLookupTable(DC, LookupTable);
3909
3910 // Write the lookup table
3911 RecordData::value_type Record[] = {DECL_CONTEXT_VISIBLE};
3912 Stream.EmitRecordWithBlob(DeclContextVisibleLookupAbbrev, Record,
3913 LookupTable);
3914 ++NumVisibleDeclContexts;
3915 return Offset;
3916}
3917
3918/// Write an UPDATE_VISIBLE block for the given context.
3919///
3920/// UPDATE_VISIBLE blocks contain the declarations that are added to an existing
3921/// DeclContext in a dependent AST file. As such, they only exist for the TU
3922/// (in C++), for namespaces, and for classes with forward-declared unscoped
3923/// enumeration members (in C++11).
3924void ASTWriter::WriteDeclContextVisibleUpdate(const DeclContext *DC) {
3925 StoredDeclsMap *Map = DC->getLookupPtr();
3926 if (!Map || Map->empty())
3927 return;
3928
3929 // Create the on-disk hash table in a buffer.
3930 SmallString<4096> LookupTable;
3931 GenerateNameLookupTable(DC, LookupTable);
3932
3933 // If we're updating a namespace, select a key declaration as the key for the
3934 // update record; those are the only ones that will be checked on reload.
3935 if (isa<NamespaceDecl>(DC))
3936 DC = cast<DeclContext>(Chain->getKeyDeclaration(cast<Decl>(DC)));
3937
3938 // Write the lookup table
3939 RecordData::value_type Record[] = {UPDATE_VISIBLE, getDeclID(cast<Decl>(DC))};
3940 Stream.EmitRecordWithBlob(UpdateVisibleAbbrev, Record, LookupTable);
3941}
3942
3943/// Write an FP_PRAGMA_OPTIONS block for the given FPOptions.
3944void ASTWriter::WriteFPPragmaOptions(const FPOptionsOverride &Opts) {
3945 RecordData::value_type Record[] = {Opts.getAsOpaqueInt()};
3946 Stream.EmitRecord(FP_PRAGMA_OPTIONS, Record);
3947}
3948
3949/// Write an OPENCL_EXTENSIONS block for the given OpenCLOptions.
3950void ASTWriter::WriteOpenCLExtensions(Sema &SemaRef) {
3951 if (!SemaRef.Context.getLangOpts().OpenCL)
3952 return;
3953
3954 const OpenCLOptions &Opts = SemaRef.getOpenCLOptions();
3955 RecordData Record;
3956 for (const auto &I:Opts.OptMap) {
3957 AddString(I.getKey(), Record);
3958 auto V = I.getValue();
3959 Record.push_back(V.Supported ? 1 : 0);
3960 Record.push_back(V.Enabled ? 1 : 0);
3961 Record.push_back(V.WithPragma ? 1 : 0);
3962 Record.push_back(V.Avail);
3963 Record.push_back(V.Core);
3964 Record.push_back(V.Opt);
3965 }
3966 Stream.EmitRecord(OPENCL_EXTENSIONS, Record);
3967}
3968
3969void ASTWriter::WriteOpenCLExtensionTypes(Sema &SemaRef) {
3970 if (!SemaRef.Context.getLangOpts().OpenCL)
3971 return;
3972
3973 // Sort the elements of the map OpenCLTypeExtMap by TypeIDs,
3974 // without copying them.
3975 const llvm::DenseMap<const Type *, std::set<std::string>> &OpenCLTypeExtMap =
3976 SemaRef.OpenCLTypeExtMap;
3977 using ElementTy = std::pair<TypeID, const std::set<std::string> *>;
3978 llvm::SmallVector<ElementTy, 8> StableOpenCLTypeExtMap;
3979 StableOpenCLTypeExtMap.reserve(OpenCLTypeExtMap.size());
3980
3981 for (const auto &I : OpenCLTypeExtMap)
3982 StableOpenCLTypeExtMap.emplace_back(
3983 getTypeID(I.first->getCanonicalTypeInternal()), &I.second);
3984
3985 auto CompareByTypeID = [](const ElementTy &E1, const ElementTy &E2) -> bool {
3986 return E1.first < E2.first;
3987 };
3988 llvm::sort(StableOpenCLTypeExtMap, CompareByTypeID);
3989
3990 RecordData Record;
3991 for (const ElementTy &E : StableOpenCLTypeExtMap) {
3992 Record.push_back(E.first); // TypeID
3993 const std::set<std::string> *ExtSet = E.second;
3994 Record.push_back(static_cast<unsigned>(ExtSet->size()));
3995 for (const std::string &Ext : *ExtSet)
3996 AddString(Ext, Record);
3997 }
3998
3999 Stream.EmitRecord(OPENCL_EXTENSION_TYPES, Record);
4000}
4001
4002void ASTWriter::WriteOpenCLExtensionDecls(Sema &SemaRef) {
4003 if (!SemaRef.Context.getLangOpts().OpenCL)
4004 return;
4005
4006 // Sort the elements of the map OpenCLDeclExtMap by DeclIDs,
4007 // without copying them.
4008 const llvm::DenseMap<const Decl *, std::set<std::string>> &OpenCLDeclExtMap =
4009 SemaRef.OpenCLDeclExtMap;
4010 using ElementTy = std::pair<DeclID, const std::set<std::string> *>;
4011 llvm::SmallVector<ElementTy, 8> StableOpenCLDeclExtMap;
4012 StableOpenCLDeclExtMap.reserve(OpenCLDeclExtMap.size());
4013
4014 for (const auto &I : OpenCLDeclExtMap)
4015 StableOpenCLDeclExtMap.emplace_back(getDeclID(I.first), &I.second);
4016
4017 auto CompareByDeclID = [](const ElementTy &E1, const ElementTy &E2) -> bool {
4018 return E1.first < E2.first;
4019 };
4020 llvm::sort(StableOpenCLDeclExtMap, CompareByDeclID);
4021
4022 RecordData Record;
4023 for (const ElementTy &E : StableOpenCLDeclExtMap) {
4024 Record.push_back(E.first); // DeclID
4025 const std::set<std::string> *ExtSet = E.second;
4026 Record.push_back(static_cast<unsigned>(ExtSet->size()));
4027 for (const std::string &Ext : *ExtSet)
4028 AddString(Ext, Record);
4029 }
4030
4031 Stream.EmitRecord(OPENCL_EXTENSION_DECLS, Record);
4032}
4033
4034void ASTWriter::WriteCUDAPragmas(Sema &SemaRef) {
4035 if (SemaRef.ForceCUDAHostDeviceDepth > 0) {
4036 RecordData::value_type Record[] = {SemaRef.ForceCUDAHostDeviceDepth};
4037 Stream.EmitRecord(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH, Record);
4038 }
4039}
4040
4041void ASTWriter::WriteObjCCategories() {
4042 SmallVector<ObjCCategoriesInfo, 2> CategoriesMap;
4043 RecordData Categories;
4044
4045 for (unsigned I = 0, N = ObjCClassesWithCategories.size(); I != N; ++I) {
4046 unsigned Size = 0;
4047 unsigned StartIndex = Categories.size();
4048
4049 ObjCInterfaceDecl *Class = ObjCClassesWithCategories[I];
4050
4051 // Allocate space for the size.
4052 Categories.push_back(0);
4053
4054 // Add the categories.
4055 for (ObjCInterfaceDecl::known_categories_iterator
4056 Cat = Class->known_categories_begin(),
4057 CatEnd = Class->known_categories_end();
4058 Cat != CatEnd; ++Cat, ++Size) {
4059 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 4059, __PRETTY_FUNCTION__))
;
4060 AddDeclRef(*Cat, Categories);
4061 }
4062
4063 // Update the size.
4064 Categories[StartIndex] = Size;
4065
4066 // Record this interface -> category map.
4067 ObjCCategoriesInfo CatInfo = { getDeclID(Class), StartIndex };
4068 CategoriesMap.push_back(CatInfo);
4069 }
4070
4071 // Sort the categories map by the definition ID, since the reader will be
4072 // performing binary searches on this information.
4073 llvm::array_pod_sort(CategoriesMap.begin(), CategoriesMap.end());
4074
4075 // Emit the categories map.
4076 using namespace llvm;
4077
4078 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4079 Abbrev->Add(BitCodeAbbrevOp(OBJC_CATEGORIES_MAP));
4080 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # of entries
4081 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4082 unsigned AbbrevID = Stream.EmitAbbrev(std::move(Abbrev));
4083
4084 RecordData::value_type Record[] = {OBJC_CATEGORIES_MAP, CategoriesMap.size()};
4085 Stream.EmitRecordWithBlob(AbbrevID, Record,
4086 reinterpret_cast<char *>(CategoriesMap.data()),
4087 CategoriesMap.size() * sizeof(ObjCCategoriesInfo));
4088
4089 // Emit the category lists.
4090 Stream.EmitRecord(OBJC_CATEGORIES, Categories);
4091}
4092
4093void ASTWriter::WriteLateParsedTemplates(Sema &SemaRef) {
4094 Sema::LateParsedTemplateMapT &LPTMap = SemaRef.LateParsedTemplateMap;
4095
4096 if (LPTMap.empty())
4097 return;
4098
4099 RecordData Record;
4100 for (auto &LPTMapEntry : LPTMap) {
4101 const FunctionDecl *FD = LPTMapEntry.first;
4102 LateParsedTemplate &LPT = *LPTMapEntry.second;
4103 AddDeclRef(FD, Record);
4104 AddDeclRef(LPT.D, Record);
4105 Record.push_back(LPT.Toks.size());
4106
4107 for (const auto &Tok : LPT.Toks) {
4108 AddToken(Tok, Record);
4109 }
4110 }
4111 Stream.EmitRecord(LATE_PARSED_TEMPLATE, Record);
4112}
4113
4114/// Write the state of 'pragma clang optimize' at the end of the module.
4115void ASTWriter::WriteOptimizePragmaOptions(Sema &SemaRef) {
4116 RecordData Record;
4117 SourceLocation PragmaLoc = SemaRef.getOptimizeOffPragmaLocation();
4118 AddSourceLocation(PragmaLoc, Record);
4119 Stream.EmitRecord(OPTIMIZE_PRAGMA_OPTIONS, Record);
4120}
4121
4122/// Write the state of 'pragma ms_struct' at the end of the module.
4123void ASTWriter::WriteMSStructPragmaOptions(Sema &SemaRef) {
4124 RecordData Record;
4125 Record.push_back(SemaRef.MSStructPragmaOn ? PMSST_ON : PMSST_OFF);
4126 Stream.EmitRecord(MSSTRUCT_PRAGMA_OPTIONS, Record);
4127}
4128
4129/// Write the state of 'pragma pointers_to_members' at the end of the
4130//module.
4131void ASTWriter::WriteMSPointersToMembersPragmaOptions(Sema &SemaRef) {
4132 RecordData Record;
4133 Record.push_back(SemaRef.MSPointerToMemberRepresentationMethod);
4134 AddSourceLocation(SemaRef.ImplicitMSInheritanceAttrLoc, Record);
4135 Stream.EmitRecord(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS, Record);
4136}
4137
4138/// Write the state of 'pragma align/pack' at the end of the module.
4139void ASTWriter::WritePackPragmaOptions(Sema &SemaRef) {
4140 // Don't serialize pragma align/pack state for modules, since it should only
4141 // take effect on a per-submodule basis.
4142 if (WritingModule)
4143 return;
4144
4145 RecordData Record;
4146 AddAlignPackInfo(SemaRef.AlignPackStack.CurrentValue, Record);
4147 AddSourceLocation(SemaRef.AlignPackStack.CurrentPragmaLocation, Record);
4148 Record.push_back(SemaRef.AlignPackStack.Stack.size());
4149 for (const auto &StackEntry : SemaRef.AlignPackStack.Stack) {
4150 AddAlignPackInfo(StackEntry.Value, Record);
4151 AddSourceLocation(StackEntry.PragmaLocation, Record);
4152 AddSourceLocation(StackEntry.PragmaPushLocation, Record);
4153 AddString(StackEntry.StackSlotLabel, Record);
4154 }
4155 Stream.EmitRecord(ALIGN_PACK_PRAGMA_OPTIONS, Record);
4156}
4157
4158/// Write the state of 'pragma float_control' at the end of the module.
4159void ASTWriter::WriteFloatControlPragmaOptions(Sema &SemaRef) {
4160 // Don't serialize pragma float_control state for modules,
4161 // since it should only take effect on a per-submodule basis.
4162 if (WritingModule)
4163 return;
4164
4165 RecordData Record;
4166 Record.push_back(SemaRef.FpPragmaStack.CurrentValue.getAsOpaqueInt());
4167 AddSourceLocation(SemaRef.FpPragmaStack.CurrentPragmaLocation, Record);
4168 Record.push_back(SemaRef.FpPragmaStack.Stack.size());
4169 for (const auto &StackEntry : SemaRef.FpPragmaStack.Stack) {
4170 Record.push_back(StackEntry.Value.getAsOpaqueInt());
4171 AddSourceLocation(StackEntry.PragmaLocation, Record);
4172 AddSourceLocation(StackEntry.PragmaPushLocation, Record);
4173 AddString(StackEntry.StackSlotLabel, Record);
4174 }
4175 Stream.EmitRecord(FLOAT_CONTROL_PRAGMA_OPTIONS, Record);
4176}
4177
4178void ASTWriter::WriteModuleFileExtension(Sema &SemaRef,
4179 ModuleFileExtensionWriter &Writer) {
4180 // Enter the extension block.
4181 Stream.EnterSubblock(EXTENSION_BLOCK_ID, 4);
4182
4183 // Emit the metadata record abbreviation.
4184 auto Abv = std::make_shared<llvm::BitCodeAbbrev>();
4185 Abv->Add(llvm::BitCodeAbbrevOp(EXTENSION_METADATA));
4186 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4187 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4188 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4189 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4190 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4191 unsigned Abbrev = Stream.EmitAbbrev(std::move(Abv));
4192
4193 // Emit the metadata record.
4194 RecordData Record;
4195 auto Metadata = Writer.getExtension()->getExtensionMetadata();
4196 Record.push_back(EXTENSION_METADATA);
4197 Record.push_back(Metadata.MajorVersion);
4198 Record.push_back(Metadata.MinorVersion);
4199 Record.push_back(Metadata.BlockName.size());
4200 Record.push_back(Metadata.UserInfo.size());
4201 SmallString<64> Buffer;
4202 Buffer += Metadata.BlockName;
4203 Buffer += Metadata.UserInfo;
4204 Stream.EmitRecordWithBlob(Abbrev, Record, Buffer);
4205
4206 // Emit the contents of the extension block.
4207 Writer.writeExtensionContents(SemaRef, Stream);
4208
4209 // Exit the extension block.
4210 Stream.ExitBlock();
4211}
4212
4213//===----------------------------------------------------------------------===//
4214// General Serialization Routines
4215//===----------------------------------------------------------------------===//
4216
4217void ASTRecordWriter::AddAttr(const Attr *A) {
4218 auto &Record = *this;
4219 if (!A)
4220 return Record.push_back(0);
4221 Record.push_back(A->getKind() + 1); // FIXME: stable encoding, target attrs
4222
4223 Record.AddIdentifierRef(A->getAttrName());
4224 Record.AddIdentifierRef(A->getScopeName());
4225 Record.AddSourceRange(A->getRange());
4226 Record.AddSourceLocation(A->getScopeLoc());
4227 Record.push_back(A->getParsedKind());
4228 Record.push_back(A->getSyntax());
4229 Record.push_back(A->getAttributeSpellingListIndexRaw());
4230
4231#include "clang/Serialization/AttrPCHWrite.inc"
4232}
4233
4234/// Emit the list of attributes to the specified record.
4235void ASTRecordWriter::AddAttributes(ArrayRef<const Attr *> Attrs) {
4236 push_back(Attrs.size());
4237 for (const auto *A : Attrs)
4238 AddAttr(A);
4239}
4240
4241void ASTWriter::AddToken(const Token &Tok, RecordDataImpl &Record) {
4242 AddSourceLocation(Tok.getLocation(), Record);
4243 Record.push_back(Tok.getLength());
4244
4245 // FIXME: When reading literal tokens, reconstruct the literal pointer
4246 // if it is needed.
4247 AddIdentifierRef(Tok.getIdentifierInfo(), Record);
4248 // FIXME: Should translate token kind to a stable encoding.
4249 Record.push_back(Tok.getKind());
4250 // FIXME: Should translate token flags to a stable encoding.
4251 Record.push_back(Tok.getFlags());
4252}
4253
4254void ASTWriter::AddString(StringRef Str, RecordDataImpl &Record) {
4255 Record.push_back(Str.size());
4256 Record.insert(Record.end(), Str.begin(), Str.end());
4257}
4258
4259bool ASTWriter::PreparePathForOutput(SmallVectorImpl<char> &Path) {
4260 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 4260, __PRETTY_FUNCTION__))
;
4261
4262 bool Changed =
4263 cleanPathForOutput(Context->getSourceManager().getFileManager(), Path);
4264
4265 // Remove a prefix to make the path relative, if relevant.
4266 const char *PathBegin = Path.data();
4267 const char *PathPtr =
4268 adjustFilenameForRelocatableAST(PathBegin, BaseDirectory);
4269 if (PathPtr != PathBegin) {
4270 Path.erase(Path.begin(), Path.begin() + (PathPtr - PathBegin));
4271 Changed = true;
4272 }
4273
4274 return Changed;
4275}
4276
4277void ASTWriter::AddPath(StringRef Path, RecordDataImpl &Record) {
4278 SmallString<128> FilePath(Path);
4279 PreparePathForOutput(FilePath);
4280 AddString(FilePath, Record);
4281}
4282
4283void ASTWriter::EmitRecordWithPath(unsigned Abbrev, RecordDataRef Record,
4284 StringRef Path) {
4285 SmallString<128> FilePath(Path);
4286 PreparePathForOutput(FilePath);
4287 Stream.EmitRecordWithBlob(Abbrev, Record, FilePath);
4288}
4289
4290void ASTWriter::AddVersionTuple(const VersionTuple &Version,
4291 RecordDataImpl &Record) {
4292 Record.push_back(Version.getMajor());
4293 if (Optional<unsigned> Minor = Version.getMinor())
4294 Record.push_back(*Minor + 1);
4295 else
4296 Record.push_back(0);
4297 if (Optional<unsigned> Subminor = Version.getSubminor())
4298 Record.push_back(*Subminor + 1);
4299 else
4300 Record.push_back(0);
4301}
4302
4303/// Note that the identifier II occurs at the given offset
4304/// within the identifier table.
4305void ASTWriter::SetIdentifierOffset(const IdentifierInfo *II, uint32_t Offset) {
4306 IdentID ID = IdentifierIDs[II];
4307 // Only store offsets new to this AST file. Other identifier names are looked
4308 // up earlier in the chain and thus don't need an offset.
4309 if (ID >= FirstIdentID)
4310 IdentifierOffsets[ID - FirstIdentID] = Offset;
4311}
4312
4313/// Note that the selector Sel occurs at the given offset
4314/// within the method pool/selector table.
4315void ASTWriter::SetSelectorOffset(Selector Sel, uint32_t Offset) {
4316 unsigned ID = SelectorIDs[Sel];
4317 assert(ID && "Unknown selector")((ID && "Unknown selector") ? static_cast<void>
(0) : __assert_fail ("ID && \"Unknown selector\"", "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 4317, __PRETTY_FUNCTION__))
;
4318 // Don't record offsets for selectors that are also available in a different
4319 // file.
4320 if (ID < FirstSelectorID)
4321 return;
4322 SelectorOffsets[ID - FirstSelectorID] = Offset;
4323}
4324
4325ASTWriter::ASTWriter(llvm::BitstreamWriter &Stream,
4326 SmallVectorImpl<char> &Buffer,
4327 InMemoryModuleCache &ModuleCache,
4328 ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions,
4329 bool IncludeTimestamps)
4330 : Stream(Stream), Buffer(Buffer), ModuleCache(ModuleCache),
4331 IncludeTimestamps(IncludeTimestamps) {
4332 for (const auto &Ext : Extensions) {
4333 if (auto Writer = Ext->createExtensionWriter(*this))
4334 ModuleFileExtensionWriters.push_back(std::move(Writer));
4335 }
4336}
4337
4338ASTWriter::~ASTWriter() = default;
4339
4340const LangOptions &ASTWriter::getLangOpts() const {
4341 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 4341, __PRETTY_FUNCTION__))
;
4342 return Context->getLangOpts();
4343}
4344
4345time_t ASTWriter::getTimestampForOutput(const FileEntry *E) const {
4346 return IncludeTimestamps ? E->getModificationTime() : 0;
4347}
4348
4349ASTFileSignature ASTWriter::WriteAST(Sema &SemaRef,
4350 const std::string &OutputFile,
4351 Module *WritingModule, StringRef isysroot,
4352 bool hasErrors,
4353 bool ShouldCacheASTInMemory) {
4354 WritingAST = true;
4355
4356 ASTHasCompilerErrors = hasErrors;
4357
4358 // Emit the file header.
4359 Stream.Emit((unsigned)'C', 8);
4360 Stream.Emit((unsigned)'P', 8);
4361 Stream.Emit((unsigned)'C', 8);
4362 Stream.Emit((unsigned)'H', 8);
4363
4364 WriteBlockInfoBlock();
4365
4366 Context = &SemaRef.Context;
4367 PP = &SemaRef.PP;
4368 this->WritingModule = WritingModule;
4369 ASTFileSignature Signature =
4370 WriteASTCore(SemaRef, isysroot, OutputFile, WritingModule);
4371 Context = nullptr;
4372 PP = nullptr;
4373 this->WritingModule = nullptr;
4374 this->BaseDirectory.clear();
4375
4376 WritingAST = false;
4377 if (ShouldCacheASTInMemory) {
4378 // Construct MemoryBuffer and update buffer manager.
4379 ModuleCache.addBuiltPCM(OutputFile,
4380 llvm::MemoryBuffer::getMemBufferCopy(
4381 StringRef(Buffer.begin(), Buffer.size())));
4382 }
4383 return Signature;
4384}
4385
4386template<typename Vector>
4387static void AddLazyVectorDecls(ASTWriter &Writer, Vector &Vec,
4388 ASTWriter::RecordData &Record) {
4389 for (typename Vector::iterator I = Vec.begin(nullptr, true), E = Vec.end();
4390 I != E; ++I) {
4391 Writer.AddDeclRef(*I, Record);
4392 }
4393}
4394
4395ASTFileSignature ASTWriter::WriteASTCore(Sema &SemaRef, StringRef isysroot,
4396 const std::string &OutputFile,
4397 Module *WritingModule) {
4398 using namespace llvm;
4399
4400 bool isModule = WritingModule != nullptr;
4401
4402 // Make sure that the AST reader knows to finalize itself.
4403 if (Chain)
4404 Chain->finalizeForWriting();
4405
4406 ASTContext &Context = SemaRef.Context;
4407 Preprocessor &PP = SemaRef.PP;
4408
4409 // Set up predefined declaration IDs.
4410 auto RegisterPredefDecl = [&] (Decl *D, PredefinedDeclIDs ID) {
4411 if (D) {
4412 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 4412, __PRETTY_FUNCTION__))
;
4413 DeclIDs[D] = ID;
4414 }
4415 };
4416 RegisterPredefDecl(Context.getTranslationUnitDecl(),
4417 PREDEF_DECL_TRANSLATION_UNIT_ID);
4418 RegisterPredefDecl(Context.ObjCIdDecl, PREDEF_DECL_OBJC_ID_ID);
4419 RegisterPredefDecl(Context.ObjCSelDecl, PREDEF_DECL_OBJC_SEL_ID);
4420 RegisterPredefDecl(Context.ObjCClassDecl, PREDEF_DECL_OBJC_CLASS_ID);
4421 RegisterPredefDecl(Context.ObjCProtocolClassDecl,
4422 PREDEF_DECL_OBJC_PROTOCOL_ID);
4423 RegisterPredefDecl(Context.Int128Decl, PREDEF_DECL_INT_128_ID);
4424 RegisterPredefDecl(Context.UInt128Decl, PREDEF_DECL_UNSIGNED_INT_128_ID);
4425 RegisterPredefDecl(Context.ObjCInstanceTypeDecl,
4426 PREDEF_DECL_OBJC_INSTANCETYPE_ID);
4427 RegisterPredefDecl(Context.BuiltinVaListDecl, PREDEF_DECL_BUILTIN_VA_LIST_ID);
4428 RegisterPredefDecl(Context.VaListTagDecl, PREDEF_DECL_VA_LIST_TAG);
4429 RegisterPredefDecl(Context.BuiltinMSVaListDecl,
4430 PREDEF_DECL_BUILTIN_MS_VA_LIST_ID);
4431 RegisterPredefDecl(Context.MSGuidTagDecl,
4432 PREDEF_DECL_BUILTIN_MS_GUID_ID);
4433 RegisterPredefDecl(Context.ExternCContext, PREDEF_DECL_EXTERN_C_CONTEXT_ID);
4434 RegisterPredefDecl(Context.MakeIntegerSeqDecl,
4435 PREDEF_DECL_MAKE_INTEGER_SEQ_ID);
4436 RegisterPredefDecl(Context.CFConstantStringTypeDecl,
4437 PREDEF_DECL_CF_CONSTANT_STRING_ID);
4438 RegisterPredefDecl(Context.CFConstantStringTagDecl,
4439 PREDEF_DECL_CF_CONSTANT_STRING_TAG_ID);
4440 RegisterPredefDecl(Context.TypePackElementDecl,
4441 PREDEF_DECL_TYPE_PACK_ELEMENT_ID);
4442
4443 // Build a record containing all of the tentative definitions in this file, in
4444 // TentativeDefinitions order. Generally, this record will be empty for
4445 // headers.
4446 RecordData TentativeDefinitions;
4447 AddLazyVectorDecls(*this, SemaRef.TentativeDefinitions, TentativeDefinitions);
4448
4449 // Build a record containing all of the file scoped decls in this file.
4450 RecordData UnusedFileScopedDecls;
4451 if (!isModule)
4452 AddLazyVectorDecls(*this, SemaRef.UnusedFileScopedDecls,
4453 UnusedFileScopedDecls);
4454
4455 // Build a record containing all of the delegating constructors we still need
4456 // to resolve.
4457 RecordData DelegatingCtorDecls;
4458 if (!isModule)
4459 AddLazyVectorDecls(*this, SemaRef.DelegatingCtorDecls, DelegatingCtorDecls);
4460
4461 // Write the set of weak, undeclared identifiers. We always write the
4462 // entire table, since later PCH files in a PCH chain are only interested in
4463 // the results at the end of the chain.
4464 RecordData WeakUndeclaredIdentifiers;
4465 for (auto &WeakUndeclaredIdentifier : SemaRef.WeakUndeclaredIdentifiers) {
4466 IdentifierInfo *II = WeakUndeclaredIdentifier.first;
4467 WeakInfo &WI = WeakUndeclaredIdentifier.second;
4468 AddIdentifierRef(II, WeakUndeclaredIdentifiers);
4469 AddIdentifierRef(WI.getAlias(), WeakUndeclaredIdentifiers);
4470 AddSourceLocation(WI.getLocation(), WeakUndeclaredIdentifiers);
4471 WeakUndeclaredIdentifiers.push_back(WI.getUsed());
4472 }
4473
4474 // Build a record containing all of the ext_vector declarations.
4475 RecordData ExtVectorDecls;
4476 AddLazyVectorDecls(*this, SemaRef.ExtVectorDecls, ExtVectorDecls);
4477
4478 // Build a record containing all of the VTable uses information.
4479 RecordData VTableUses;
4480 if (!SemaRef.VTableUses.empty()) {
4481 for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I) {
4482 AddDeclRef(SemaRef.VTableUses[I].first, VTableUses);
4483 AddSourceLocation(SemaRef.VTableUses[I].second, VTableUses);
4484 VTableUses.push_back(SemaRef.VTablesUsed[SemaRef.VTableUses[I].first]);
4485 }
4486 }
4487
4488 // Build a record containing all of the UnusedLocalTypedefNameCandidates.
4489 RecordData UnusedLocalTypedefNameCandidates;
4490 for (const TypedefNameDecl *TD : SemaRef.UnusedLocalTypedefNameCandidates)
4491 AddDeclRef(TD, UnusedLocalTypedefNameCandidates);
4492
4493 // Build a record containing all of pending implicit instantiations.
4494 RecordData PendingInstantiations;
4495 for (const auto &I : SemaRef.PendingInstantiations) {
4496 AddDeclRef(I.first, PendingInstantiations);
4497 AddSourceLocation(I.second, PendingInstantiations);
4498 }
4499 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 4500, __PRETTY_FUNCTION__))
4500 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 4500, __PRETTY_FUNCTION__))
;
4501
4502 // Build a record containing some declaration references.
4503 RecordData SemaDeclRefs;
4504 if (SemaRef.StdNamespace || SemaRef.StdBadAlloc || SemaRef.StdAlignValT) {
4505 AddDeclRef(SemaRef.getStdNamespace(), SemaDeclRefs);
4506 AddDeclRef(SemaRef.getStdBadAlloc(), SemaDeclRefs);
4507 AddDeclRef(SemaRef.getStdAlignValT(), SemaDeclRefs);
4508 }
4509
4510 RecordData CUDASpecialDeclRefs;
4511 if (Context.getcudaConfigureCallDecl()) {
4512 AddDeclRef(Context.getcudaConfigureCallDecl(), CUDASpecialDeclRefs);
4513 }
4514
4515 // Build a record containing all of the known namespaces.
4516 RecordData KnownNamespaces;
4517 for (const auto &I : SemaRef.KnownNamespaces) {
4518 if (!I.second)
4519 AddDeclRef(I.first, KnownNamespaces);
4520 }
4521
4522 // Build a record of all used, undefined objects that require definitions.
4523 RecordData UndefinedButUsed;
4524
4525 SmallVector<std::pair<NamedDecl *, SourceLocation>, 16> Undefined;
4526 SemaRef.getUndefinedButUsed(Undefined);
4527 for (const auto &I : Undefined) {
4528 AddDeclRef(I.first, UndefinedButUsed);
4529 AddSourceLocation(I.second, UndefinedButUsed);
4530 }
4531
4532 // Build a record containing all delete-expressions that we would like to
4533 // analyze later in AST.
4534 RecordData DeleteExprsToAnalyze;
4535
4536 if (!isModule) {
4537 for (const auto &DeleteExprsInfo :
4538 SemaRef.getMismatchingDeleteExpressions()) {
4539 AddDeclRef(DeleteExprsInfo.first, DeleteExprsToAnalyze);
4540 DeleteExprsToAnalyze.push_back(DeleteExprsInfo.second.size());
4541 for (const auto &DeleteLoc : DeleteExprsInfo.second) {
4542 AddSourceLocation(DeleteLoc.first, DeleteExprsToAnalyze);
4543 DeleteExprsToAnalyze.push_back(DeleteLoc.second);
4544 }
4545 }
4546 }
4547
4548 // Write the control block
4549 WriteControlBlock(PP, Context, isysroot, OutputFile);
4550
4551 // Write the remaining AST contents.
4552 Stream.FlushToWord();
4553 ASTBlockRange.first = Stream.GetCurrentBitNo();
4554 Stream.EnterSubblock(AST_BLOCK_ID, 5);
4555 ASTBlockStartOffset = Stream.GetCurrentBitNo();
4556
4557 // This is so that older clang versions, before the introduction
4558 // of the control block, can read and reject the newer PCH format.
4559 {
4560 RecordData Record = {VERSION_MAJOR};
4561 Stream.EmitRecord(METADATA_OLD_FORMAT, Record);
4562 }
4563
4564 // Create a lexical update block containing all of the declarations in the
4565 // translation unit that do not come from other AST files.
4566 const TranslationUnitDecl *TU = Context.getTranslationUnitDecl();
4567 SmallVector<uint32_t, 128> NewGlobalKindDeclPairs;
4568 for (const auto *D : TU->noload_decls()) {
4569 if (!D->isFromASTFile()) {
4570 NewGlobalKindDeclPairs.push_back(D->getKind());
4571 NewGlobalKindDeclPairs.push_back(GetDeclRef(D));
4572 }
4573 }
4574
4575 auto Abv = std::make_shared<BitCodeAbbrev>();
4576 Abv->Add(llvm::BitCodeAbbrevOp(TU_UPDATE_LEXICAL));
4577 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4578 unsigned TuUpdateLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv));
4579 {
4580 RecordData::value_type Record[] = {TU_UPDATE_LEXICAL};
4581 Stream.EmitRecordWithBlob(TuUpdateLexicalAbbrev, Record,
4582 bytes(NewGlobalKindDeclPairs));
4583 }
4584
4585 // And a visible updates block for the translation unit.
4586 Abv = std::make_shared<BitCodeAbbrev>();
4587 Abv->Add(llvm::BitCodeAbbrevOp(UPDATE_VISIBLE));
4588 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4589 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4590 UpdateVisibleAbbrev = Stream.EmitAbbrev(std::move(Abv));
4591 WriteDeclContextVisibleUpdate(TU);
4592
4593 // If we have any extern "C" names, write out a visible update for them.
4594 if (Context.ExternCContext)
4595 WriteDeclContextVisibleUpdate(Context.ExternCContext);
4596
4597 // If the translation unit has an anonymous namespace, and we don't already
4598 // have an update block for it, write it as an update block.
4599 // FIXME: Why do we not do this if there's already an update block?
4600 if (NamespaceDecl *NS = TU->getAnonymousNamespace()) {
4601 ASTWriter::UpdateRecord &Record = DeclUpdates[TU];
4602 if (Record.empty())
4603 Record.push_back(DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, NS));
4604 }
4605
4606 // Add update records for all mangling numbers and static local numbers.
4607 // These aren't really update records, but this is a convenient way of
4608 // tagging this rare extra data onto the declarations.
4609 for (const auto &Number : Context.MangleNumbers)
4610 if (!Number.first->isFromASTFile())
4611 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_MANGLING_NUMBER,
4612 Number.second));
4613 for (const auto &Number : Context.StaticLocalNumbers)
4614 if (!Number.first->isFromASTFile())
4615 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_STATIC_LOCAL_NUMBER,
4616 Number.second));
4617
4618 // Make sure visible decls, added to DeclContexts previously loaded from
4619 // an AST file, are registered for serialization. Likewise for template
4620 // specializations added to imported templates.
4621 for (const auto *I : DeclsToEmitEvenIfUnreferenced) {
4622 GetDeclRef(I);
4623 }
4624
4625 // Make sure all decls associated with an identifier are registered for
4626 // serialization, if we're storing decls with identifiers.
4627 if (!WritingModule || !getLangOpts().CPlusPlus) {
4628 llvm::SmallVector<const IdentifierInfo*, 256> IIs;
4629 for (const auto &ID : PP.getIdentifierTable()) {
4630 const IdentifierInfo *II = ID.second;
4631 if (!Chain || !II->isFromAST() || II->hasChangedSinceDeserialization())
4632 IIs.push_back(II);
4633 }
4634 // Sort the identifiers to visit based on their name.
4635 llvm::sort(IIs, llvm::deref<std::less<>>());
4636 for (const IdentifierInfo *II : IIs) {
4637 for (IdentifierResolver::iterator D = SemaRef.IdResolver.begin(II),
4638 DEnd = SemaRef.IdResolver.end();
4639 D != DEnd; ++D) {
4640 GetDeclRef(*D);
4641 }
4642 }
4643 }
4644
4645 // For method pool in the module, if it contains an entry for a selector,
4646 // the entry should be complete, containing everything introduced by that
4647 // module and all modules it imports. It's possible that the entry is out of
4648 // date, so we need to pull in the new content here.
4649
4650 // It's possible that updateOutOfDateSelector can update SelectorIDs. To be
4651 // safe, we copy all selectors out.
4652 llvm::SmallVector<Selector, 256> AllSelectors;
4653 for (auto &SelectorAndID : SelectorIDs)
4654 AllSelectors.push_back(SelectorAndID.first);
4655 for (auto &Selector : AllSelectors)
4656 SemaRef.updateOutOfDateSelector(Selector);
4657
4658 // Form the record of special types.
4659 RecordData SpecialTypes;
4660 AddTypeRef(Context.getRawCFConstantStringType(), SpecialTypes);
4661 AddTypeRef(Context.getFILEType(), SpecialTypes);
4662 AddTypeRef(Context.getjmp_bufType(), SpecialTypes);
4663 AddTypeRef(Context.getsigjmp_bufType(), SpecialTypes);
4664 AddTypeRef(Context.ObjCIdRedefinitionType, SpecialTypes);
4665 AddTypeRef(Context.ObjCClassRedefinitionType, SpecialTypes);
4666 AddTypeRef(Context.ObjCSelRedefinitionType, SpecialTypes);
4667 AddTypeRef(Context.getucontext_tType(), SpecialTypes);
4668
4669 if (Chain) {
4670 // Write the mapping information describing our module dependencies and how
4671 // each of those modules were mapped into our own offset/ID space, so that
4672 // the reader can build the appropriate mapping to its own offset/ID space.
4673 // The map consists solely of a blob with the following format:
4674 // *(module-kind:i8
4675 // module-name-len:i16 module-name:len*i8
4676 // source-location-offset:i32
4677 // identifier-id:i32
4678 // preprocessed-entity-id:i32
4679 // macro-definition-id:i32
4680 // submodule-id:i32
4681 // selector-id:i32
4682 // declaration-id:i32
4683 // c++-base-specifiers-id:i32
4684 // type-id:i32)
4685 //
4686 // module-kind is the ModuleKind enum value. If it is MK_PrebuiltModule,
4687 // MK_ExplicitModule or MK_ImplicitModule, then the module-name is the
4688 // module name. Otherwise, it is the module file name.
4689 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4690 Abbrev->Add(BitCodeAbbrevOp(MODULE_OFFSET_MAP));
4691 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4692 unsigned ModuleOffsetMapAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
4693 SmallString<2048> Buffer;
4694 {
4695 llvm::raw_svector_ostream Out(Buffer);
4696 for (ModuleFile &M : Chain->ModuleMgr) {
4697 using namespace llvm::support;
4698
4699 endian::Writer LE(Out, little);
4700 LE.write<uint8_t>(static_cast<uint8_t>(M.Kind));
4701 StringRef Name = M.isModule() ? M.ModuleName : M.FileName;
4702 LE.write<uint16_t>(Name.size());
4703 Out.write(Name.data(), Name.size());
4704
4705 // Note: if a base ID was uint max, it would not be possible to load
4706 // another module after it or have more than one entity inside it.
4707 uint32_t None = std::numeric_limits<uint32_t>::max();
4708
4709 auto writeBaseIDOrNone = [&](uint32_t BaseID, bool ShouldWrite) {
4710 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 4710, __PRETTY_FUNCTION__))
;
4711 if (ShouldWrite)
4712 LE.write<uint32_t>(BaseID);
4713 else
4714 LE.write<uint32_t>(None);
4715 };
4716
4717 // These values should be unique within a chain, since they will be read
4718 // as keys into ContinuousRangeMaps.
4719 writeBaseIDOrNone(M.SLocEntryBaseOffset, M.LocalNumSLocEntries);
4720 writeBaseIDOrNone(M.BaseIdentifierID, M.LocalNumIdentifiers);
4721 writeBaseIDOrNone(M.BaseMacroID, M.LocalNumMacros);
4722 writeBaseIDOrNone(M.BasePreprocessedEntityID,
4723 M.NumPreprocessedEntities);
4724 writeBaseIDOrNone(M.BaseSubmoduleID, M.LocalNumSubmodules);
4725 writeBaseIDOrNone(M.BaseSelectorID, M.LocalNumSelectors);
4726 writeBaseIDOrNone(M.BaseDeclID, M.LocalNumDecls);
4727 writeBaseIDOrNone(M.BaseTypeIndex, M.LocalNumTypes);
4728 }
4729 }
4730 RecordData::value_type Record[] = {MODULE_OFFSET_MAP};
4731 Stream.EmitRecordWithBlob(ModuleOffsetMapAbbrev, Record,
4732 Buffer.data(), Buffer.size());
4733 }
4734
4735 // Build a record containing all of the DeclsToCheckForDeferredDiags.
4736 RecordData DeclsToCheckForDeferredDiags;
4737 for (auto *D : SemaRef.DeclsToCheckForDeferredDiags)
4738 AddDeclRef(D, DeclsToCheckForDeferredDiags);
4739
4740 RecordData DeclUpdatesOffsetsRecord;
4741
4742 // Keep writing types, declarations, and declaration update records
4743 // until we've emitted all of them.
4744 Stream.EnterSubblock(DECLTYPES_BLOCK_ID, /*bits for abbreviations*/5);
4745 DeclTypesBlockStartOffset = Stream.GetCurrentBitNo();
4746 WriteTypeAbbrevs();
4747 WriteDeclAbbrevs();
4748 do {
4749 WriteDeclUpdatesBlocks(DeclUpdatesOffsetsRecord);
4750 while (!DeclTypesToEmit.empty()) {
4751 DeclOrType DOT = DeclTypesToEmit.front();
4752 DeclTypesToEmit.pop();
4753 if (DOT.isType())
4754 WriteType(DOT.getType());
4755 else
4756 WriteDecl(Context, DOT.getDecl());
4757 }
4758 } while (!DeclUpdates.empty());
4759 Stream.ExitBlock();
4760
4761 DoneWritingDeclsAndTypes = true;
4762
4763 // These things can only be done once we've written out decls and types.
4764 WriteTypeDeclOffsets();
4765 if (!DeclUpdatesOffsetsRecord.empty())
4766 Stream.EmitRecord(DECL_UPDATE_OFFSETS, DeclUpdatesOffsetsRecord);
4767 WriteFileDeclIDsMap();
4768 WriteSourceManagerBlock(Context.getSourceManager(), PP);
4769 WriteComments();
4770 WritePreprocessor(PP, isModule);
4771 WriteHeaderSearch(PP.getHeaderSearchInfo());
4772 WriteSelectors(SemaRef);
4773 WriteReferencedSelectorsPool(SemaRef);
4774 WriteLateParsedTemplates(SemaRef);
4775 WriteIdentifierTable(PP, SemaRef.IdResolver, isModule);
4776 WriteFPPragmaOptions(SemaRef.CurFPFeatureOverrides());
4777 WriteOpenCLExtensions(SemaRef);
4778 WriteOpenCLExtensionTypes(SemaRef);
4779 WriteCUDAPragmas(SemaRef);
4780
4781 // If we're emitting a module, write out the submodule information.
4782 if (WritingModule)
4783 WriteSubmodules(WritingModule);
4784
4785 // We need to have information about submodules to correctly deserialize
4786 // decls from OpenCLExtensionDecls block
4787 WriteOpenCLExtensionDecls(SemaRef);
4788
4789 Stream.EmitRecord(SPECIAL_TYPES, SpecialTypes);
4790
4791 // Write the record containing external, unnamed definitions.
4792 if (!EagerlyDeserializedDecls.empty())
4793 Stream.EmitRecord(EAGERLY_DESERIALIZED_DECLS, EagerlyDeserializedDecls);
4794
4795 if (!ModularCodegenDecls.empty())
4796 Stream.EmitRecord(MODULAR_CODEGEN_DECLS, ModularCodegenDecls);
4797
4798 // Write the record containing tentative definitions.
4799 if (!TentativeDefinitions.empty())
4800 Stream.EmitRecord(TENTATIVE_DEFINITIONS, TentativeDefinitions);
4801
4802 // Write the record containing unused file scoped decls.
4803 if (!UnusedFileScopedDecls.empty())
4804 Stream.EmitRecord(UNUSED_FILESCOPED_DECLS, UnusedFileScopedDecls);
4805
4806 // Write the record containing weak undeclared identifiers.
4807 if (!WeakUndeclaredIdentifiers.empty())
4808 Stream.EmitRecord(WEAK_UNDECLARED_IDENTIFIERS,
4809 WeakUndeclaredIdentifiers);
4810
4811 // Write the record containing ext_vector type names.
4812 if (!ExtVectorDecls.empty())
4813 Stream.EmitRecord(EXT_VECTOR_DECLS, ExtVectorDecls);
4814
4815 // Write the record containing VTable uses information.
4816 if (!VTableUses.empty())
4817 Stream.EmitRecord(VTABLE_USES, VTableUses);
4818
4819 // Write the record containing potentially unused local typedefs.
4820 if (!UnusedLocalTypedefNameCandidates.empty())
4821 Stream.EmitRecord(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES,
4822 UnusedLocalTypedefNameCandidates);
4823
4824 // Write the record containing pending implicit instantiations.
4825 if (!PendingInstantiations.empty())
4826 Stream.EmitRecord(PENDING_IMPLICIT_INSTANTIATIONS, PendingInstantiations);
4827
4828 // Write the record containing declaration references of Sema.
4829 if (!SemaDeclRefs.empty())
4830 Stream.EmitRecord(SEMA_DECL_REFS, SemaDeclRefs);
4831
4832 // Write the record containing decls to be checked for deferred diags.
4833 if (!DeclsToCheckForDeferredDiags.empty())
4834 Stream.EmitRecord(DECLS_TO_CHECK_FOR_DEFERRED_DIAGS,
4835 DeclsToCheckForDeferredDiags);
4836
4837 // Write the record containing CUDA-specific declaration references.
4838 if (!CUDASpecialDeclRefs.empty())
4839 Stream.EmitRecord(CUDA_SPECIAL_DECL_REFS, CUDASpecialDeclRefs);
4840
4841 // Write the delegating constructors.
4842 if (!DelegatingCtorDecls.empty())
4843 Stream.EmitRecord(DELEGATING_CTORS, DelegatingCtorDecls);
4844
4845 // Write the known namespaces.
4846 if (!KnownNamespaces.empty())
4847 Stream.EmitRecord(KNOWN_NAMESPACES, KnownNamespaces);
4848
4849 // Write the undefined internal functions and variables, and inline functions.
4850 if (!UndefinedButUsed.empty())
4851 Stream.EmitRecord(UNDEFINED_BUT_USED, UndefinedButUsed);
4852
4853 if (!DeleteExprsToAnalyze.empty())
4854 Stream.EmitRecord(DELETE_EXPRS_TO_ANALYZE, DeleteExprsToAnalyze);
4855
4856 // Write the visible updates to DeclContexts.
4857 for (auto *DC : UpdatedDeclContexts)
4858 WriteDeclContextVisibleUpdate(DC);
4859
4860 if (!WritingModule) {
4861 // Write the submodules that were imported, if any.
4862 struct ModuleInfo {
4863 uint64_t ID;
4864 Module *M;
4865 ModuleInfo(uint64_t ID, Module *M) : ID(ID), M(M) {}
4866 };
4867 llvm::SmallVector<ModuleInfo, 64> Imports;
4868 for (const auto *I : Context.local_imports()) {
4869 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 4869, __PRETTY_FUNCTION__))
;
4870 Imports.push_back(ModuleInfo(SubmoduleIDs[I->getImportedModule()],
4871 I->getImportedModule()));
4872 }
4873
4874 if (!Imports.empty()) {
4875 auto Cmp = [](const ModuleInfo &A, const ModuleInfo &B) {
4876 return A.ID < B.ID;
4877 };
4878 auto Eq = [](const ModuleInfo &A, const ModuleInfo &B) {
4879 return A.ID == B.ID;
4880 };
4881
4882 // Sort and deduplicate module IDs.
4883 llvm::sort(Imports, Cmp);
4884 Imports.erase(std::unique(Imports.begin(), Imports.end(), Eq),
4885 Imports.end());
4886
4887 RecordData ImportedModules;
4888 for (const auto &Import : Imports) {
4889 ImportedModules.push_back(Import.ID);
4890 // FIXME: If the module has macros imported then later has declarations
4891 // imported, this location won't be the right one as a location for the
4892 // declaration imports.
4893 AddSourceLocation(PP.getModuleImportLoc(Import.M), ImportedModules);
4894 }
4895
4896 Stream.EmitRecord(IMPORTED_MODULES, ImportedModules);
4897 }
4898 }
4899
4900 WriteObjCCategories();
4901 if(!WritingModule) {
4902 WriteOptimizePragmaOptions(SemaRef);
4903 WriteMSStructPragmaOptions(SemaRef);
4904 WriteMSPointersToMembersPragmaOptions(SemaRef);
4905 }
4906 WritePackPragmaOptions(SemaRef);
4907 WriteFloatControlPragmaOptions(SemaRef);
4908
4909 // Some simple statistics
4910 RecordData::value_type Record[] = {
4911 NumStatements, NumMacros, NumLexicalDeclContexts, NumVisibleDeclContexts};
4912 Stream.EmitRecord(STATISTICS, Record);
4913 Stream.ExitBlock();
4914 Stream.FlushToWord();
4915 ASTBlockRange.second = Stream.GetCurrentBitNo();
4916
4917 // Write the module file extension blocks.
4918 for (const auto &ExtWriter : ModuleFileExtensionWriters)
4919 WriteModuleFileExtension(SemaRef, *ExtWriter);
4920
4921 return writeUnhashedControlBlock(PP, Context);
4922}
4923
4924void ASTWriter::WriteDeclUpdatesBlocks(RecordDataImpl &OffsetsRecord) {
4925 if (DeclUpdates.empty())
4926 return;
4927
4928 DeclUpdateMap LocalUpdates;
4929 LocalUpdates.swap(DeclUpdates);
4930
4931 for (auto &DeclUpdate : LocalUpdates) {
4932 const Decl *D = DeclUpdate.first;
4933
4934 bool HasUpdatedBody = false;
4935 RecordData RecordData;
4936 ASTRecordWriter Record(*this, RecordData);
4937 for (auto &Update : DeclUpdate.second) {
4938 DeclUpdateKind Kind = (DeclUpdateKind)Update.getKind();
4939
4940 // An updated body is emitted last, so that the reader doesn't need
4941 // to skip over the lazy body to reach statements for other records.
4942 if (Kind == UPD_CXX_ADDED_FUNCTION_DEFINITION)
4943 HasUpdatedBody = true;
4944 else
4945 Record.push_back(Kind);
4946
4947 switch (Kind) {
4948 case UPD_CXX_ADDED_IMPLICIT_MEMBER:
4949 case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION:
4950 case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE:
4951 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 4951, __PRETTY_FUNCTION__))
;
4952 Record.push_back(GetDeclRef(Update.getDecl()));
4953 break;
4954
4955 case UPD_CXX_ADDED_FUNCTION_DEFINITION:
4956 break;
4957
4958 case UPD_CXX_POINT_OF_INSTANTIATION:
4959 // FIXME: Do we need to also save the template specialization kind here?
4960 Record.AddSourceLocation(Update.getLoc());
4961 break;
4962
4963 case UPD_CXX_ADDED_VAR_DEFINITION: {
4964 const VarDecl *VD = cast<VarDecl>(D);
4965 Record.push_back(VD->isInline());
4966 Record.push_back(VD->isInlineSpecified());
4967 Record.AddVarDeclInit(VD);
4968 break;
4969 }
4970
4971 case UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT:
4972 Record.AddStmt(const_cast<Expr *>(
4973 cast<ParmVarDecl>(Update.getDecl())->getDefaultArg()));
4974 break;
4975
4976 case UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER:
4977 Record.AddStmt(
4978 cast<FieldDecl>(Update.getDecl())->getInClassInitializer());
4979 break;
4980
4981 case UPD_CXX_INSTANTIATED_CLASS_DEFINITION: {
4982 auto *RD = cast<CXXRecordDecl>(D);
4983 UpdatedDeclContexts.insert(RD->getPrimaryContext());
4984 Record.push_back(RD->isParamDestroyedInCallee());
4985 Record.push_back(RD->getArgPassingRestrictions());
4986 Record.AddCXXDefinitionData(RD);
4987 Record.AddOffset(WriteDeclContextLexicalBlock(
4988 *Context, const_cast<CXXRecordDecl *>(RD)));
4989
4990 // This state is sometimes updated by template instantiation, when we
4991 // switch from the specialization referring to the template declaration
4992 // to it referring to the template definition.
4993 if (auto *MSInfo = RD->getMemberSpecializationInfo()) {
4994 Record.push_back(MSInfo->getTemplateSpecializationKind());
4995 Record.AddSourceLocation(MSInfo->getPointOfInstantiation());
4996 } else {
4997 auto *Spec = cast<ClassTemplateSpecializationDecl>(RD);
4998 Record.push_back(Spec->getTemplateSpecializationKind());
4999 Record.AddSourceLocation(Spec->getPointOfInstantiation());
5000
5001 // The instantiation might have been resolved to a partial
5002 // specialization. If so, record which one.
5003 auto From = Spec->getInstantiatedFrom();
5004 if (auto PartialSpec =
5005 From.dyn_cast<ClassTemplatePartialSpecializationDecl*>()) {
5006 Record.push_back(true);
5007 Record.AddDeclRef(PartialSpec);
5008 Record.AddTemplateArgumentList(
5009 &Spec->getTemplateInstantiationArgs());
5010 } else {
5011 Record.push_back(false);
5012 }
5013 }
5014 Record.push_back(RD->getTagKind());
5015 Record.AddSourceLocation(RD->getLocation());
5016 Record.AddSourceLocation(RD->getBeginLoc());
5017 Record.AddSourceRange(RD->getBraceRange());
5018
5019 // Instantiation may change attributes; write them all out afresh.
5020 Record.push_back(D->hasAttrs());
5021 if (D->hasAttrs())
5022 Record.AddAttributes(D->getAttrs());
5023
5024 // FIXME: Ensure we don't get here for explicit instantiations.
5025 break;
5026 }
5027
5028 case UPD_CXX_RESOLVED_DTOR_DELETE:
5029 Record.AddDeclRef(Update.getDecl());
5030 Record.AddStmt(cast<CXXDestructorDecl>(D)->getOperatorDeleteThisArg());
5031 break;
5032
5033 case UPD_CXX_RESOLVED_EXCEPTION_SPEC: {
5034 auto prototype =
5035 cast<FunctionDecl>(D)->getType()->castAs<FunctionProtoType>();
5036 Record.writeExceptionSpecInfo(prototype->getExceptionSpecInfo());
5037 break;
5038 }
5039
5040 case UPD_CXX_DEDUCED_RETURN_TYPE:
5041 Record.push_back(GetOrCreateTypeID(Update.getType()));
5042 break;
5043
5044 case UPD_DECL_MARKED_USED:
5045 break;
5046
5047 case UPD_MANGLING_NUMBER:
5048 case UPD_STATIC_LOCAL_NUMBER:
5049 Record.push_back(Update.getNumber());
5050 break;
5051
5052 case UPD_DECL_MARKED_OPENMP_THREADPRIVATE:
5053 Record.AddSourceRange(
5054 D->getAttr<OMPThreadPrivateDeclAttr>()->getRange());
5055 break;
5056
5057 case UPD_DECL_MARKED_OPENMP_ALLOCATE: {
5058 auto *A = D->getAttr<OMPAllocateDeclAttr>();
5059 Record.push_back(A->getAllocatorType());
5060 Record.AddStmt(A->getAllocator());
5061 Record.AddSourceRange(A->getRange());
5062 break;
5063 }
5064
5065 case UPD_DECL_MARKED_OPENMP_DECLARETARGET:
5066 Record.push_back(D->getAttr<OMPDeclareTargetDeclAttr>()->getMapType());
5067 Record.AddSourceRange(
5068 D->getAttr<OMPDeclareTargetDeclAttr>()->getRange());
5069 break;
5070
5071 case UPD_DECL_EXPORTED:
5072 Record.push_back(getSubmoduleID(Update.getModule()));
5073 break;
5074
5075 case UPD_ADDED_ATTR_TO_RECORD:
5076 Record.AddAttributes(llvm::makeArrayRef(Update.getAttr()));
5077 break;
5078 }
5079 }
5080
5081 if (HasUpdatedBody) {
5082 const auto *Def = cast<FunctionDecl>(D);
5083 Record.push_back(UPD_CXX_ADDED_FUNCTION_DEFINITION);
5084 Record.push_back(Def->isInlined());
5085 Record.AddSourceLocation(Def->getInnerLocStart());
5086 Record.AddFunctionDefinition(Def);
5087 }
5088
5089 OffsetsRecord.push_back(GetDeclRef(D));
5090 OffsetsRecord.push_back(Record.Emit(DECL_UPDATES));
5091 }
5092}
5093
5094void ASTWriter::AddAlignPackInfo(const Sema::AlignPackInfo &Info,
5095 RecordDataImpl &Record) {
5096 uint32_t Raw = Sema::AlignPackInfo::getRawEncoding(Info);
5097 Record.push_back(Raw);
5098}
5099
5100void ASTWriter::AddSourceLocation(SourceLocation Loc, RecordDataImpl &Record) {
5101 uint32_t Raw = Loc.getRawEncoding();
5102 Record.push_back((Raw << 1) | (Raw >> 31));
5103}
5104
5105void ASTWriter::AddSourceRange(SourceRange Range, RecordDataImpl &Record) {
5106 AddSourceLocation(Range.getBegin(), Record);
5107 AddSourceLocation(Range.getEnd(), Record);
5108}
5109
5110void ASTRecordWriter::AddAPFloat(const llvm::APFloat &Value) {
5111 AddAPInt(Value.bitcastToAPInt());
5112}
5113
5114void ASTWriter::AddIdentifierRef(const IdentifierInfo *II, RecordDataImpl &Record) {
5115 Record.push_back(getIdentifierRef(II));
5116}
5117
5118IdentID ASTWriter::getIdentifierRef(const IdentifierInfo *II) {
5119 if (!II)
5120 return 0;
5121
5122 IdentID &ID = IdentifierIDs[II];
5123 if (ID == 0)
5124 ID = NextIdentID++;
5125 return ID;
5126}
5127
5128MacroID ASTWriter::getMacroRef(MacroInfo *MI, const IdentifierInfo *Name) {
5129 // Don't emit builtin macros like __LINE__ to the AST file unless they
5130 // have been redefined by the header (in which case they are not
5131 // isBuiltinMacro).
5132 if (!MI || MI->isBuiltinMacro())
5133 return 0;
5134
5135 MacroID &ID = MacroIDs[MI];
5136 if (ID == 0) {
5137 ID = NextMacroID++;
5138 MacroInfoToEmitData Info = { Name, MI, ID };
5139 MacroInfosToEmit.push_back(Info);
5140 }
5141 return ID;
5142}
5143
5144MacroID ASTWriter::getMacroID(MacroInfo *MI) {
5145 if (!MI || MI->isBuiltinMacro())
5146 return 0;
5147
5148 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5148, __PRETTY_FUNCTION__))
;
5149 return MacroIDs[MI];
5150}
5151
5152uint32_t ASTWriter::getMacroDirectivesOffset(const IdentifierInfo *Name) {
5153 return IdentMacroDirectivesOffsetMap.lookup(Name);
5154}
5155
5156void ASTRecordWriter::AddSelectorRef(const Selector SelRef) {
5157 Record->push_back(Writer->getSelectorRef(SelRef));
5158}
5159
5160SelectorID ASTWriter::getSelectorRef(Selector Sel) {
5161 if (Sel.getAsOpaquePtr() == nullptr) {
5162 return 0;
5163 }
5164
5165 SelectorID SID = SelectorIDs[Sel];
5166 if (SID == 0 && Chain) {
5167 // This might trigger a ReadSelector callback, which will set the ID for
5168 // this selector.
5169 Chain->LoadSelector(Sel);
5170 SID = SelectorIDs[Sel];
5171 }
5172 if (SID == 0) {
5173 SID = NextSelectorID++;
5174 SelectorIDs[Sel] = SID;
5175 }
5176 return SID;
5177}
5178
5179void ASTRecordWriter::AddCXXTemporary(const CXXTemporary *Temp) {
5180 AddDeclRef(Temp->getDestructor());
5181}
5182
5183void ASTRecordWriter::AddTemplateArgumentLocInfo(
5184 TemplateArgument::ArgKind Kind, const TemplateArgumentLocInfo &Arg) {
5185 switch (Kind) {
5186 case TemplateArgument::Expression:
5187 AddStmt(Arg.getAsExpr());
5188 break;
5189 case TemplateArgument::Type:
5190 AddTypeSourceInfo(Arg.getAsTypeSourceInfo());
5191 break;
5192 case TemplateArgument::Template:
5193 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5194 AddSourceLocation(Arg.getTemplateNameLoc());
5195 break;
5196 case TemplateArgument::TemplateExpansion:
5197 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5198 AddSourceLocation(Arg.getTemplateNameLoc());
5199 AddSourceLocation(Arg.getTemplateEllipsisLoc());
5200 break;
5201 case TemplateArgument::Null:
5202 case TemplateArgument::Integral:
5203 case TemplateArgument::Declaration:
5204 case TemplateArgument::NullPtr:
5205 case TemplateArgument::Pack:
5206 // FIXME: Is this right?
5207 break;
5208 }
5209}
5210
5211void ASTRecordWriter::AddTemplateArgumentLoc(const TemplateArgumentLoc &Arg) {
5212 AddTemplateArgument(Arg.getArgument());
5213
5214 if (Arg.getArgument().getKind() == TemplateArgument::Expression) {
5215 bool InfoHasSameExpr
5216 = Arg.getArgument().getAsExpr() == Arg.getLocInfo().getAsExpr();
5217 Record->push_back(InfoHasSameExpr);
5218 if (InfoHasSameExpr)
5219 return; // Avoid storing the same expr twice.
5220 }
5221 AddTemplateArgumentLocInfo(Arg.getArgument().getKind(), Arg.getLocInfo());
5222}
5223
5224void ASTRecordWriter::AddTypeSourceInfo(TypeSourceInfo *TInfo) {
5225 if (!TInfo) {
5226 AddTypeRef(QualType());
5227 return;
5228 }
5229
5230 AddTypeRef(TInfo->getType());
5231 AddTypeLoc(TInfo->getTypeLoc());
5232}
5233
5234void ASTRecordWriter::AddTypeLoc(TypeLoc TL) {
5235 TypeLocWriter TLW(*this);
5236 for (; !TL.isNull(); TL = TL.getNextTypeLoc())
5237 TLW.Visit(TL);
5238}
5239
5240void ASTWriter::AddTypeRef(QualType T, RecordDataImpl &Record) {
5241 Record.push_back(GetOrCreateTypeID(T));
5242}
5243
5244TypeID ASTWriter::GetOrCreateTypeID(QualType T) {
5245 assert(Context)((Context) ? static_cast<void> (0) : __assert_fail ("Context"
, "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5245, __PRETTY_FUNCTION__))
;
5246 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5247 if (T.isNull())
5248 return TypeIdx();
5249 assert(!T.getLocalFastQualifiers())((!T.getLocalFastQualifiers()) ? static_cast<void> (0) :
__assert_fail ("!T.getLocalFastQualifiers()", "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5249, __PRETTY_FUNCTION__))
;
5250
5251 TypeIdx &Idx = TypeIdxs[T];
5252 if (Idx.getIndex() == 0) {
5253 if (DoneWritingDeclsAndTypes) {
5254 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5254, __PRETTY_FUNCTION__))
;
5255 return TypeIdx();
5256 }
5257
5258 // We haven't seen this type before. Assign it a new ID and put it
5259 // into the queue of types to emit.
5260 Idx = TypeIdx(NextTypeID++);
5261 DeclTypesToEmit.push(T);
5262 }
5263 return Idx;
5264 });
5265}
5266
5267TypeID ASTWriter::getTypeID(QualType T) const {
5268 assert(Context)((Context) ? static_cast<void> (0) : __assert_fail ("Context"
, "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5268, __PRETTY_FUNCTION__))
;
5269 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5270 if (T.isNull())
5271 return TypeIdx();
5272 assert(!T.getLocalFastQualifiers())((!T.getLocalFastQualifiers()) ? static_cast<void> (0) :
__assert_fail ("!T.getLocalFastQualifiers()", "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5272, __PRETTY_FUNCTION__))
;
5273
5274 TypeIdxMap::const_iterator I = TypeIdxs.find(T);
5275 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5275, __PRETTY_FUNCTION__))
;
5276 return I->second;
5277 });
5278}
5279
5280void ASTWriter::AddDeclRef(const Decl *D, RecordDataImpl &Record) {
5281 Record.push_back(GetDeclRef(D));
5282}
5283
5284DeclID ASTWriter::GetDeclRef(const Decl *D) {
5285 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5285, __PRETTY_FUNCTION__))
;
5286
5287 if (!D) {
5288 return 0;
5289 }
5290
5291 // If D comes from an AST file, its declaration ID is already known and
5292 // fixed.
5293 if (D->isFromASTFile())
5294 return D->getGlobalID();
5295
5296 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5296, __PRETTY_FUNCTION__))
;
5297 DeclID &ID = DeclIDs[D];
5298 if (ID == 0) {
5299 if (DoneWritingDeclsAndTypes) {
5300 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5300, __PRETTY_FUNCTION__))
;
5301 return 0;
5302 }
5303
5304 // We haven't seen this declaration before. Give it a new ID and
5305 // enqueue it in the list of declarations to emit.
5306 ID = NextDeclID++;
5307 DeclTypesToEmit.push(const_cast<Decl *>(D));
5308 }
5309
5310 return ID;
5311}
5312
5313DeclID ASTWriter::getDeclID(const Decl *D) {
5314 if (!D)
5315 return 0;
5316
5317 // If D comes from an AST file, its declaration ID is already known and
5318 // fixed.
5319 if (D->isFromASTFile())
5320 return D->getGlobalID();
5321
5322 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5322, __PRETTY_FUNCTION__))
;
5323 return DeclIDs[D];
5324}
5325
5326void ASTWriter::associateDeclWithFile(const Decl *D, DeclID ID) {
5327 assert(ID)((ID) ? static_cast<void> (0) : __assert_fail ("ID", "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5327, __PRETTY_FUNCTION__))
;
5328 assert(D)((D) ? static_cast<void> (0) : __assert_fail ("D", "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5328, __PRETTY_FUNCTION__))
;
5329
5330 SourceLocation Loc = D->getLocation();
5331 if (Loc.isInvalid())
5332 return;
5333
5334 // We only keep track of the file-level declarations of each file.
5335 if (!D->getLexicalDeclContext()->isFileContext())
5336 return;
5337 // FIXME: ParmVarDecls that are part of a function type of a parameter of
5338 // a function/objc method, should not have TU as lexical context.
5339 // TemplateTemplateParmDecls that are part of an alias template, should not
5340 // have TU as lexical context.
5341 if (isa<ParmVarDecl>(D) || isa<TemplateTemplateParmDecl>(D))
5342 return;
5343
5344 SourceManager &SM = Context->getSourceManager();
5345 SourceLocation FileLoc = SM.getFileLoc(Loc);
5346 assert(SM.isLocalSourceLocation(FileLoc))((SM.isLocalSourceLocation(FileLoc)) ? static_cast<void>
(0) : __assert_fail ("SM.isLocalSourceLocation(FileLoc)", "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5346, __PRETTY_FUNCTION__))
;
5347 FileID FID;
5348 unsigned Offset;
5349 std::tie(FID, Offset) = SM.getDecomposedLoc(FileLoc);
5350 if (FID.isInvalid())
5351 return;
5352 assert(SM.getSLocEntry(FID).isFile())((SM.getSLocEntry(FID).isFile()) ? static_cast<void> (0
) : __assert_fail ("SM.getSLocEntry(FID).isFile()", "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5352, __PRETTY_FUNCTION__))
;
5353
5354 std::unique_ptr<DeclIDInFileInfo> &Info = FileDeclIDs[FID];
5355 if (!Info)
5356 Info = std::make_unique<DeclIDInFileInfo>();
5357
5358 std::pair<unsigned, serialization::DeclID> LocDecl(Offset, ID);
5359 LocDeclIDsTy &Decls = Info->DeclIDs;
5360
5361 if (Decls.empty() || Decls.back().first <= Offset) {
5362 Decls.push_back(LocDecl);
5363 return;
5364 }
5365
5366 LocDeclIDsTy::iterator I =
5367 llvm::upper_bound(Decls, LocDecl, llvm::less_first());
5368
5369 Decls.insert(I, LocDecl);
5370}
5371
5372unsigned ASTWriter::getAnonymousDeclarationNumber(const NamedDecl *D) {
5373 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5374, __PRETTY_FUNCTION__))
5374 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5374, __PRETTY_FUNCTION__))
;
5375
5376 // Number the anonymous declarations within this context, if we've not
5377 // already done so.
5378 auto It = AnonymousDeclarationNumbers.find(D);
5379 if (It == AnonymousDeclarationNumbers.end()) {
5380 auto *DC = D->getLexicalDeclContext();
5381 numberAnonymousDeclsWithin(DC, [&](const NamedDecl *ND, unsigned Number) {
5382 AnonymousDeclarationNumbers[ND] = Number;
5383 });
5384
5385 It = AnonymousDeclarationNumbers.find(D);
5386 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5387, __PRETTY_FUNCTION__))
5387 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5387, __PRETTY_FUNCTION__))
;
5388 }
5389
5390 return It->second;
5391}
5392
5393void ASTRecordWriter::AddDeclarationNameLoc(const DeclarationNameLoc &DNLoc,
5394 DeclarationName Name) {
5395 switch (Name.getNameKind()) {
5396 case DeclarationName::CXXConstructorName:
5397 case DeclarationName::CXXDestructorName:
5398 case DeclarationName::CXXConversionFunctionName:
5399 AddTypeSourceInfo(DNLoc.getNamedTypeInfo());
5400 break;
5401
5402 case DeclarationName::CXXOperatorName:
5403 AddSourceRange(DNLoc.getCXXOperatorNameRange());
5404 break;
5405
5406 case DeclarationName::CXXLiteralOperatorName:
5407 AddSourceLocation(DNLoc.getCXXLiteralOperatorNameLoc());
5408 break;
5409
5410 case DeclarationName::Identifier:
5411 case DeclarationName::ObjCZeroArgSelector:
5412 case DeclarationName::ObjCOneArgSelector:
5413 case DeclarationName::ObjCMultiArgSelector:
5414 case DeclarationName::CXXUsingDirective:
5415 case DeclarationName::CXXDeductionGuideName:
5416 break;
5417 }
5418}
5419
5420void ASTRecordWriter::AddDeclarationNameInfo(
5421 const DeclarationNameInfo &NameInfo) {
5422 AddDeclarationName(NameInfo.getName());
5423 AddSourceLocation(NameInfo.getLoc());
5424 AddDeclarationNameLoc(NameInfo.getInfo(), NameInfo.getName());
5425}
5426
5427void ASTRecordWriter::AddQualifierInfo(const QualifierInfo &Info) {
5428 AddNestedNameSpecifierLoc(Info.QualifierLoc);
5429 Record->push_back(Info.NumTemplParamLists);
5430 for (unsigned i = 0, e = Info.NumTemplParamLists; i != e; ++i)
5431 AddTemplateParameterList(Info.TemplParamLists[i]);
5432}
5433
5434void ASTRecordWriter::AddNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS) {
5435 // Nested name specifiers usually aren't too long. I think that 8 would
5436 // typically accommodate the vast majority.
5437 SmallVector<NestedNameSpecifierLoc , 8> NestedNames;
5438
5439 // Push each of the nested-name-specifiers's onto a stack for
5440 // serialization in reverse order.
5441 while (NNS) {
5442 NestedNames.push_back(NNS);
5443 NNS = NNS.getPrefix();
5444 }
5445
5446 Record->push_back(NestedNames.size());
5447 while(!NestedNames.empty()) {
5448 NNS = NestedNames.pop_back_val();
5449 NestedNameSpecifier::SpecifierKind Kind
5450 = NNS.getNestedNameSpecifier()->getKind();
5451 Record->push_back(Kind);
5452 switch (Kind) {
5453 case NestedNameSpecifier::Identifier:
5454 AddIdentifierRef(NNS.getNestedNameSpecifier()->getAsIdentifier());
5455 AddSourceRange(NNS.getLocalSourceRange());
5456 break;
5457
5458 case NestedNameSpecifier::Namespace:
5459 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespace());
5460 AddSourceRange(NNS.getLocalSourceRange());
5461 break;
5462
5463 case NestedNameSpecifier::NamespaceAlias:
5464 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespaceAlias());
5465 AddSourceRange(NNS.getLocalSourceRange());
5466 break;
5467
5468 case NestedNameSpecifier::TypeSpec:
5469 case NestedNameSpecifier::TypeSpecWithTemplate:
5470 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5471 AddTypeRef(NNS.getTypeLoc().getType());
5472 AddTypeLoc(NNS.getTypeLoc());
5473 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5474 break;
5475
5476 case NestedNameSpecifier::Global:
5477 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5478 break;
5479
5480 case NestedNameSpecifier::Super:
5481 AddDeclRef(NNS.getNestedNameSpecifier()->getAsRecordDecl());
5482 AddSourceRange(NNS.getLocalSourceRange());
5483 break;
5484 }
5485 }
5486}
5487
5488void ASTRecordWriter::AddTemplateParameterList(
5489 const TemplateParameterList *TemplateParams) {
5490 assert(TemplateParams && "No TemplateParams!")((TemplateParams && "No TemplateParams!") ? static_cast
<void> (0) : __assert_fail ("TemplateParams && \"No TemplateParams!\""
, "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5490, __PRETTY_FUNCTION__))
;
5491 AddSourceLocation(TemplateParams->getTemplateLoc());
5492 AddSourceLocation(TemplateParams->getLAngleLoc());
5493 AddSourceLocation(TemplateParams->getRAngleLoc());
5494
5495 Record->push_back(TemplateParams->size());
5496 for (const auto &P : *TemplateParams)
5497 AddDeclRef(P);
5498 if (const Expr *RequiresClause = TemplateParams->getRequiresClause()) {
5499 Record->push_back(true);
5500 AddStmt(const_cast<Expr*>(RequiresClause));
5501 } else {
5502 Record->push_back(false);
5503 }
5504}
5505
5506/// Emit a template argument list.
5507void ASTRecordWriter::AddTemplateArgumentList(
5508 const TemplateArgumentList *TemplateArgs) {
5509 assert(TemplateArgs && "No TemplateArgs!")((TemplateArgs && "No TemplateArgs!") ? static_cast<
void> (0) : __assert_fail ("TemplateArgs && \"No TemplateArgs!\""
, "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5509, __PRETTY_FUNCTION__))
;
5510 Record->push_back(TemplateArgs->size());
5511 for (int i = 0, e = TemplateArgs->size(); i != e; ++i)
5512 AddTemplateArgument(TemplateArgs->get(i));
5513}
5514
5515void ASTRecordWriter::AddASTTemplateArgumentListInfo(
5516 const ASTTemplateArgumentListInfo *ASTTemplArgList) {
5517 assert(ASTTemplArgList && "No ASTTemplArgList!")((ASTTemplArgList && "No ASTTemplArgList!") ? static_cast
<void> (0) : __assert_fail ("ASTTemplArgList && \"No ASTTemplArgList!\""
, "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5517, __PRETTY_FUNCTION__))
;
5518 AddSourceLocation(ASTTemplArgList->LAngleLoc);
5519 AddSourceLocation(ASTTemplArgList->RAngleLoc);
5520 Record->push_back(ASTTemplArgList->NumTemplateArgs);
5521 const TemplateArgumentLoc *TemplArgs = ASTTemplArgList->getTemplateArgs();
5522 for (int i = 0, e = ASTTemplArgList->NumTemplateArgs; i != e; ++i)
5523 AddTemplateArgumentLoc(TemplArgs[i]);
5524}
5525
5526void ASTRecordWriter::AddUnresolvedSet(const ASTUnresolvedSet &Set) {
5527 Record->push_back(Set.size());
5528 for (ASTUnresolvedSet::const_iterator
5529 I = Set.begin(), E = Set.end(); I != E; ++I) {
5530 AddDeclRef(I.getDecl());
5531 Record->push_back(I.getAccess());
5532 }
5533}
5534
5535// FIXME: Move this out of the main ASTRecordWriter interface.
5536void ASTRecordWriter::AddCXXBaseSpecifier(const CXXBaseSpecifier &Base) {
5537 Record->push_back(Base.isVirtual());
5538 Record->push_back(Base.isBaseOfClass());
5539 Record->push_back(Base.getAccessSpecifierAsWritten());
5540 Record->push_back(Base.getInheritConstructors());
5541 AddTypeSourceInfo(Base.getTypeSourceInfo());
5542 AddSourceRange(Base.getSourceRange());
5543 AddSourceLocation(Base.isPackExpansion()? Base.getEllipsisLoc()
5544 : SourceLocation());
5545}
5546
5547static uint64_t EmitCXXBaseSpecifiers(ASTWriter &W,
5548 ArrayRef<CXXBaseSpecifier> Bases) {
5549 ASTWriter::RecordData Record;
5550 ASTRecordWriter Writer(W, Record);
5551 Writer.push_back(Bases.size());
5552
5553 for (auto &Base : Bases)
5554 Writer.AddCXXBaseSpecifier(Base);
5555
5556 return Writer.Emit(serialization::DECL_CXX_BASE_SPECIFIERS);
5557}
5558
5559// FIXME: Move this out of the main ASTRecordWriter interface.
5560void ASTRecordWriter::AddCXXBaseSpecifiers(ArrayRef<CXXBaseSpecifier> Bases) {
5561 AddOffset(EmitCXXBaseSpecifiers(*Writer, Bases));
5562}
5563
5564static uint64_t
5565EmitCXXCtorInitializers(ASTWriter &W,
5566 ArrayRef<CXXCtorInitializer *> CtorInits) {
5567 ASTWriter::RecordData Record;
5568 ASTRecordWriter Writer(W, Record);
5569 Writer.push_back(CtorInits.size());
5570
5571 for (auto *Init : CtorInits) {
5572 if (Init->isBaseInitializer()) {
5573 Writer.push_back(CTOR_INITIALIZER_BASE);
5574 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5575 Writer.push_back(Init->isBaseVirtual());
5576 } else if (Init->isDelegatingInitializer()) {
5577 Writer.push_back(CTOR_INITIALIZER_DELEGATING);
5578 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5579 } else if (Init->isMemberInitializer()){
5580 Writer.push_back(CTOR_INITIALIZER_MEMBER);
5581 Writer.AddDeclRef(Init->getMember());
5582 } else {
5583 Writer.push_back(CTOR_INITIALIZER_INDIRECT_MEMBER);
5584 Writer.AddDeclRef(Init->getIndirectMember());
5585 }
5586
5587 Writer.AddSourceLocation(Init->getMemberLocation());
5588 Writer.AddStmt(Init->getInit());
5589 Writer.AddSourceLocation(Init->getLParenLoc());
5590 Writer.AddSourceLocation(Init->getRParenLoc());
5591 Writer.push_back(Init->isWritten());
5592 if (Init->isWritten())
5593 Writer.push_back(Init->getSourceOrder());
5594 }
5595
5596 return Writer.Emit(serialization::DECL_CXX_CTOR_INITIALIZERS);
5597}
5598
5599// FIXME: Move this out of the main ASTRecordWriter interface.
5600void ASTRecordWriter::AddCXXCtorInitializers(
5601 ArrayRef<CXXCtorInitializer *> CtorInits) {
5602 AddOffset(EmitCXXCtorInitializers(*Writer, CtorInits));
5603}
5604
5605void ASTRecordWriter::AddCXXDefinitionData(const CXXRecordDecl *D) {
5606 auto &Data = D->data();
5607 Record->push_back(Data.IsLambda);
5608
5609 #define FIELD(Name, Width, Merge) \
5610 Record->push_back(Data.Name);
5611 #include "clang/AST/CXXRecordDeclDefinitionBits.def"
5612
5613 // getODRHash will compute the ODRHash if it has not been previously computed.
5614 Record->push_back(D->getODRHash());
5615 bool ModulesDebugInfo =
5616 Writer->Context->getLangOpts().ModulesDebugInfo && !D->isDependentType();
5617 Record->push_back(ModulesDebugInfo);
5618 if (ModulesDebugInfo)
5619 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(D));
5620
5621 // IsLambda bit is already saved.
5622
5623 Record->push_back(Data.NumBases);
5624 if (Data.NumBases > 0)
5625 AddCXXBaseSpecifiers(Data.bases());
5626
5627 // FIXME: Make VBases lazily computed when needed to avoid storing them.
5628 Record->push_back(Data.NumVBases);
5629 if (Data.NumVBases > 0)
5630 AddCXXBaseSpecifiers(Data.vbases());
5631
5632 AddUnresolvedSet(Data.Conversions.get(*Writer->Context));
5633 Record->push_back(Data.ComputedVisibleConversions);
5634 if (Data.ComputedVisibleConversions)
5635 AddUnresolvedSet(Data.VisibleConversions.get(*Writer->Context));
5636 // Data.Definition is the owning decl, no need to write it.
5637 AddDeclRef(D->getFirstFriend());
5638
5639 // Add lambda-specific data.
5640 if (Data.IsLambda) {
5641 auto &Lambda = D->getLambdaData();
5642 Record->push_back(Lambda.Dependent);
5643 Record->push_back(Lambda.IsGenericLambda);
5644 Record->push_back(Lambda.CaptureDefault);
5645 Record->push_back(Lambda.NumCaptures);
5646 Record->push_back(Lambda.NumExplicitCaptures);
5647 Record->push_back(Lambda.HasKnownInternalLinkage);
5648 Record->push_back(Lambda.ManglingNumber);
5649 Record->push_back(D->getDeviceLambdaManglingNumber());
5650 AddDeclRef(D->getLambdaContextDecl());
5651 AddTypeSourceInfo(Lambda.MethodTyInfo);
5652 for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
5653 const LambdaCapture &Capture = Lambda.Captures[I];
5654 AddSourceLocation(Capture.getLocation());
5655 Record->push_back(Capture.isImplicit());
5656 Record->push_back(Capture.getCaptureKind());
5657 switch (Capture.getCaptureKind()) {
5658 case LCK_StarThis:
5659 case LCK_This:
5660 case LCK_VLAType:
5661 break;
5662 case LCK_ByCopy:
5663 case LCK_ByRef:
5664 VarDecl *Var =
5665 Capture.capturesVariable() ? Capture.getCapturedVar() : nullptr;
5666 AddDeclRef(Var);
5667 AddSourceLocation(Capture.isPackExpansion() ? Capture.getEllipsisLoc()
5668 : SourceLocation());
5669 break;
5670 }
5671 }
5672 }
5673}
5674
5675void ASTRecordWriter::AddVarDeclInit(const VarDecl *VD) {
5676 const Expr *Init = VD->getInit();
5677 if (!Init) {
5678 push_back(0);
5679 return;
5680 }
5681
5682 unsigned Val = 1;
5683 if (EvaluatedStmt *ES = VD->getEvaluatedStmt()) {
5684 Val |= (ES->HasConstantInitialization ? 2 : 0);
5685 Val |= (ES->HasConstantDestruction ? 4 : 0);
5686 // FIXME: Also emit the constant initializer value.
5687 }
5688 push_back(Val);
5689 writeStmtRef(Init);
5690}
5691
5692void ASTWriter::ReaderInitialized(ASTReader *Reader) {
5693 assert(Reader && "Cannot remove chain")((Reader && "Cannot remove chain") ? static_cast<void
> (0) : __assert_fail ("Reader && \"Cannot remove chain\""
, "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5693, __PRETTY_FUNCTION__))
;
5694 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5694, __PRETTY_FUNCTION__))
;
5695 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5701, __PRETTY_FUNCTION__))
5696 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5701, __PRETTY_FUNCTION__))
5697 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5701, __PRETTY_FUNCTION__))
5698 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5701, __PRETTY_FUNCTION__))
5699 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5701, __PRETTY_FUNCTION__))
5700 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5701, __PRETTY_FUNCTION__))
5701 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5701, __PRETTY_FUNCTION__))
;
5702
5703 Chain = Reader;
5704
5705 // Note, this will get called multiple times, once one the reader starts up
5706 // and again each time it's done reading a PCH or module.
5707 FirstDeclID = NUM_PREDEF_DECL_IDS + Chain->getTotalNumDecls();
5708 FirstTypeID = NUM_PREDEF_TYPE_IDS + Chain->getTotalNumTypes();
5709 FirstIdentID = NUM_PREDEF_IDENT_IDS + Chain->getTotalNumIdentifiers();
5710 FirstMacroID = NUM_PREDEF_MACRO_IDS + Chain->getTotalNumMacros();
5711 FirstSubmoduleID = NUM_PREDEF_SUBMODULE_IDS + Chain->getTotalNumSubmodules();
5712 FirstSelectorID = NUM_PREDEF_SELECTOR_IDS + Chain->getTotalNumSelectors();
5713 NextDeclID = FirstDeclID;
5714 NextTypeID = FirstTypeID;
5715 NextIdentID = FirstIdentID;
5716 NextMacroID = FirstMacroID;
5717 NextSelectorID = FirstSelectorID;
5718 NextSubmoduleID = FirstSubmoduleID;
5719}
5720
5721void ASTWriter::IdentifierRead(IdentID ID, IdentifierInfo *II) {
5722 // Always keep the highest ID. See \p TypeRead() for more information.
5723 IdentID &StoredID = IdentifierIDs[II];
5724 if (ID > StoredID)
5725 StoredID = ID;
5726}
5727
5728void ASTWriter::MacroRead(serialization::MacroID ID, MacroInfo *MI) {
5729 // Always keep the highest ID. See \p TypeRead() for more information.
5730 MacroID &StoredID = MacroIDs[MI];
5731 if (ID > StoredID)
5732 StoredID = ID;
5733}
5734
5735void ASTWriter::TypeRead(TypeIdx Idx, QualType T) {
5736 // Always take the highest-numbered type index. This copes with an interesting
5737 // case for chained AST writing where we schedule writing the type and then,
5738 // later, deserialize the type from another AST. In this case, we want to
5739 // keep the higher-numbered entry so that we can properly write it out to
5740 // the AST file.
5741 TypeIdx &StoredIdx = TypeIdxs[T];
5742 if (Idx.getIndex() >= StoredIdx.getIndex())
5743 StoredIdx = Idx;
5744}
5745
5746void ASTWriter::SelectorRead(SelectorID ID, Selector S) {
5747 // Always keep the highest ID. See \p TypeRead() for more information.
5748 SelectorID &StoredID = SelectorIDs[S];
5749 if (ID > StoredID)
5750 StoredID = ID;
5751}
5752
5753void ASTWriter::MacroDefinitionRead(serialization::PreprocessedEntityID ID,
5754 MacroDefinitionRecord *MD) {
5755 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5755, __PRETTY_FUNCTION__))
;
5756 MacroDefinitions[MD] = ID;
5757}
5758
5759void ASTWriter::ModuleRead(serialization::SubmoduleID ID, Module *Mod) {
5760 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5760, __PRETTY_FUNCTION__))
;
5761 SubmoduleIDs[Mod] = ID;
5762}
5763
5764void ASTWriter::CompletedTagDefinition(const TagDecl *D) {
5765 if (Chain && Chain->isProcessingUpdateRecords()) return;
5766 assert(D->isCompleteDefinition())((D->isCompleteDefinition()) ? static_cast<void> (0)
: __assert_fail ("D->isCompleteDefinition()", "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5766, __PRETTY_FUNCTION__))
;
5767 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5767, __PRETTY_FUNCTION__))
;
5768 if (auto *RD = dyn_cast<CXXRecordDecl>(D)) {
5769 // We are interested when a PCH decl is modified.
5770 if (RD->isFromASTFile()) {
5771 // A forward reference was mutated into a definition. Rewrite it.
5772 // FIXME: This happens during template instantiation, should we
5773 // have created a new definition decl instead ?
5774 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5775, __PRETTY_FUNCTION__))
5775 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5775, __PRETTY_FUNCTION__))
;
5776 DeclUpdates[RD].push_back(
5777 DeclUpdate(UPD_CXX_INSTANTIATED_CLASS_DEFINITION));
5778 }
5779 }
5780}
5781
5782static bool isImportedDeclContext(ASTReader *Chain, const Decl *D) {
5783 if (D->isFromASTFile())
5784 return true;
5785
5786 // The predefined __va_list_tag struct is imported if we imported any decls.
5787 // FIXME: This is a gross hack.
5788 return D == D->getASTContext().getVaListTagDecl();
5789}
5790
5791void ASTWriter::AddedVisibleDecl(const DeclContext *DC, const Decl *D) {
5792 if (Chain && Chain->isProcessingUpdateRecords()) return;
5793 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5794, __PRETTY_FUNCTION__))
5794 "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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5794, __PRETTY_FUNCTION__))
;
5795
5796 // TU is handled elsewhere.
5797 if (isa<TranslationUnitDecl>(DC))
5798 return;
5799
5800 // Namespaces are handled elsewhere, except for template instantiations of
5801 // FunctionTemplateDecls in namespaces. We are interested in cases where the
5802 // local instantiations are added to an imported context. Only happens when
5803 // adding ADL lookup candidates, for example templated friends.
5804 if (isa<NamespaceDecl>(DC) && D->getFriendObjectKind() == Decl::FOK_None &&
5805 !isa<FunctionTemplateDecl>(D))
5806 return;
5807
5808 // We're only interested in cases where a local declaration is added to an
5809 // imported context.
5810 if (D->isFromASTFile() || !isImportedDeclContext(Chain, cast<Decl>(DC)))
5811 return;
5812
5813 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5813, __PRETTY_FUNCTION__))
;
5814 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5814, __PRETTY_FUNCTION__))
;
5815 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5815, __PRETTY_FUNCTION__))
;
5816 if (UpdatedDeclContexts.insert(DC) && !cast<Decl>(DC)->isFromASTFile()) {
5817 // We're adding a visible declaration to a predefined decl context. Ensure
5818 // that we write out all of its lookup results so we don't get a nasty
5819 // surprise when we try to emit its lookup table.
5820 for (auto *Child : DC->decls())
5821 DeclsToEmitEvenIfUnreferenced.push_back(Child);
5822 }
5823 DeclsToEmitEvenIfUnreferenced.push_back(D);
5824}
5825
5826void ASTWriter::AddedCXXImplicitMember(const CXXRecordDecl *RD, const Decl *D) {
5827 if (Chain && Chain->isProcessingUpdateRecords()) return;
5828 assert(D->isImplicit())((D->isImplicit()) ? static_cast<void> (0) : __assert_fail
("D->isImplicit()", "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5828, __PRETTY_FUNCTION__))
;
5829
5830 // We're only interested in cases where a local declaration is added to an
5831 // imported context.
5832 if (D->isFromASTFile() || !isImportedDeclContext(Chain, RD))
5833 return;
5834
5835 if (!isa<CXXMethodDecl>(D))
5836 return;
5837
5838 // A decl coming from PCH was modified.
5839 assert(RD->isCompleteDefinition())((RD->isCompleteDefinition()) ? static_cast<void> (0
) : __assert_fail ("RD->isCompleteDefinition()", "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5839, __PRETTY_FUNCTION__))
;
5840 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5840, __PRETTY_FUNCTION__))
;
5841 DeclUpdates[RD].push_back(DeclUpdate(UPD_CXX_ADDED_IMPLICIT_MEMBER, D));
5842}
5843
5844void ASTWriter::ResolvedExceptionSpec(const FunctionDecl *FD) {
5845 if (Chain && Chain->isProcessingUpdateRecords()) return;
5846 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5846, __PRETTY_FUNCTION__))
;
5847 if (!Chain) return;
5848 Chain->forEachImportedKeyDecl(FD, [&](const Decl *D) {
5849 // If we don't already know the exception specification for this redecl
5850 // chain, add an update record for it.
5851 if (isUnresolvedExceptionSpec(cast<FunctionDecl>(D)
5852 ->getType()
5853 ->castAs<FunctionProtoType>()
5854 ->getExceptionSpecType()))
5855 DeclUpdates[D].push_back(UPD_CXX_RESOLVED_EXCEPTION_SPEC);
5856 });
5857}
5858
5859void ASTWriter::DeducedReturnType(const FunctionDecl *FD, QualType ReturnType) {
5860 if (Chain && Chain->isProcessingUpdateRecords()) return;
5861 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5861, __PRETTY_FUNCTION__))
;
5862 if (!Chain) return;
5863 Chain->forEachImportedKeyDecl(FD, [&](const Decl *D) {
5864 DeclUpdates[D].push_back(
5865 DeclUpdate(UPD_CXX_DEDUCED_RETURN_TYPE, ReturnType));
5866 });
5867}
5868
5869void ASTWriter::ResolvedOperatorDelete(const CXXDestructorDecl *DD,
5870 const FunctionDecl *Delete,
5871 Expr *ThisArg) {
5872 if (Chain && Chain->isProcessingUpdateRecords()) return;
5873 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5873, __PRETTY_FUNCTION__))
;
5874 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5874, __PRETTY_FUNCTION__))
;
5875 if (!Chain) return;
5876 Chain->forEachImportedKeyDecl(DD, [&](const Decl *D) {
5877 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_RESOLVED_DTOR_DELETE, Delete));
5878 });
5879}
5880
5881void ASTWriter::CompletedImplicitDefinition(const FunctionDecl *D) {
5882 if (Chain && Chain->isProcessingUpdateRecords()) return;
5883 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5883, __PRETTY_FUNCTION__))
;
5884 if (!D->isFromASTFile())
5885 return; // Declaration not imported from PCH.
5886
5887 // Implicit function decl from a PCH was defined.
5888 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_FUNCTION_DEFINITION));
5889}
5890
5891void ASTWriter::VariableDefinitionInstantiated(const VarDecl *D) {
5892 if (Chain && Chain->isProcessingUpdateRecords()) return;
5893 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5893, __PRETTY_FUNCTION__))
;
5894 if (!D->isFromASTFile())
5895 return;
5896
5897 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_VAR_DEFINITION));
5898}
5899
5900void ASTWriter::FunctionDefinitionInstantiated(const FunctionDecl *D) {
5901 if (Chain && Chain->isProcessingUpdateRecords()) return;
5902 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5902, __PRETTY_FUNCTION__))
;
5903 if (!D->isFromASTFile())
5904 return;
5905
5906 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_ADDED_FUNCTION_DEFINITION));
5907}
5908
5909void ASTWriter::InstantiationRequested(const ValueDecl *D) {
5910 if (Chain && Chain->isProcessingUpdateRecords()) return;
5911 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5911, __PRETTY_FUNCTION__))
;
5912 if (!D->isFromASTFile())
5913 return;
5914
5915 // Since the actual instantiation is delayed, this really means that we need
5916 // to update the instantiation location.
5917 SourceLocation POI;
5918 if (auto *VD = dyn_cast<VarDecl>(D))
5919 POI = VD->getPointOfInstantiation();
5920 else
5921 POI = cast<FunctionDecl>(D)->getPointOfInstantiation();
5922 DeclUpdates[D].push_back(DeclUpdate(UPD_CXX_POINT_OF_INSTANTIATION, POI));
5923}
5924
5925void ASTWriter::DefaultArgumentInstantiated(const ParmVarDecl *D) {
5926 if (Chain && Chain->isProcessingUpdateRecords()) return;
5927 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5927, __PRETTY_FUNCTION__))
;
5928 if (!D->isFromASTFile())
5929 return;
5930
5931 DeclUpdates[D].push_back(
5932 DeclUpdate(UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT, D));
5933}
5934
5935void ASTWriter::DefaultMemberInitializerInstantiated(const FieldDecl *D) {
5936 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5936, __PRETTY_FUNCTION__))
;
5937 if (!D->isFromASTFile())
5938 return;
5939
5940 DeclUpdates[D].push_back(
5941 DeclUpdate(UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER, D));
5942}
5943
5944void ASTWriter::AddedObjCCategoryToInterface(const ObjCCategoryDecl *CatD,
5945 const ObjCInterfaceDecl *IFD) {
5946 if (Chain && Chain->isProcessingUpdateRecords()) return;
5947 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5947, __PRETTY_FUNCTION__))
;
5948 if (!IFD->isFromASTFile())
5949 return; // Declaration not imported from PCH.
5950
5951 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5951, __PRETTY_FUNCTION__))
;
5952 ObjCClassesWithCategories.insert(
5953 const_cast<ObjCInterfaceDecl *>(IFD->getDefinition()));
5954}
5955
5956void ASTWriter::DeclarationMarkedUsed(const Decl *D) {
5957 if (Chain && Chain->isProcessingUpdateRecords()) return;
5958 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5958, __PRETTY_FUNCTION__))
;
5959
5960 // If there is *any* declaration of the entity that's not from an AST file,
5961 // we can skip writing the update record. We make sure that isUsed() triggers
5962 // completion of the redeclaration chain of the entity.
5963 for (auto Prev = D->getMostRecentDecl(); Prev; Prev = Prev->getPreviousDecl())
5964 if (IsLocalDecl(Prev))
5965 return;
5966
5967 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_MARKED_USED));
5968}
5969
5970void ASTWriter::DeclarationMarkedOpenMPThreadPrivate(const Decl *D) {
5971 if (Chain && Chain->isProcessingUpdateRecords()) return;
5972 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5972, __PRETTY_FUNCTION__))
;
5973 if (!D->isFromASTFile())
5974 return;
5975
5976 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_MARKED_OPENMP_THREADPRIVATE));
5977}
5978
5979void ASTWriter::DeclarationMarkedOpenMPAllocate(const Decl *D, const Attr *A) {
5980 if (Chain && Chain->isProcessingUpdateRecords()) return;
5981 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5981, __PRETTY_FUNCTION__))
;
5982 if (!D->isFromASTFile())
5983 return;
5984
5985 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_MARKED_OPENMP_ALLOCATE, A));
5986}
5987
5988void ASTWriter::DeclarationMarkedOpenMPDeclareTarget(const Decl *D,
5989 const Attr *Attr) {
5990 if (Chain && Chain->isProcessingUpdateRecords()) return;
5991 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 5991, __PRETTY_FUNCTION__))
;
5992 if (!D->isFromASTFile())
5993 return;
5994
5995 DeclUpdates[D].push_back(
5996 DeclUpdate(UPD_DECL_MARKED_OPENMP_DECLARETARGET, Attr));
5997}
5998
5999void ASTWriter::RedefinedHiddenDefinition(const NamedDecl *D, Module *M) {
6000 if (Chain && Chain->isProcessingUpdateRecords()) return;
6001 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 6001, __PRETTY_FUNCTION__))
;
6002 assert(!D->isUnconditionallyVisible() && "expected a hidden declaration")((!D->isUnconditionallyVisible() && "expected a hidden declaration"
) ? static_cast<void> (0) : __assert_fail ("!D->isUnconditionallyVisible() && \"expected a hidden declaration\""
, "/build/llvm-toolchain-snapshot-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 6002, __PRETTY_FUNCTION__))
;
6003 DeclUpdates[D].push_back(DeclUpdate(UPD_DECL_EXPORTED, M));
6004}
6005
6006void ASTWriter::AddedAttributeToRecord(const Attr *Attr,
6007 const RecordDecl *Record) {
6008 if (Chain && Chain->isProcessingUpdateRecords()) return;
6009 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 6009, __PRETTY_FUNCTION__))
;
6010 if (!Record->isFromASTFile())
6011 return;
6012 DeclUpdates[Record].push_back(DeclUpdate(UPD_ADDED_ATTR_TO_RECORD, Attr));
6013}
6014
6015void ASTWriter::AddedCXXTemplateSpecialization(
6016 const ClassTemplateDecl *TD, const ClassTemplateSpecializationDecl *D) {
6017 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 6017, __PRETTY_FUNCTION__))
;
6018
6019 if (!TD->getFirstDecl()->isFromASTFile())
6020 return;
6021 if (Chain && Chain->isProcessingUpdateRecords())
6022 return;
6023
6024 DeclsToEmitEvenIfUnreferenced.push_back(D);
6025}
6026
6027void ASTWriter::AddedCXXTemplateSpecialization(
6028 const VarTemplateDecl *TD, const VarTemplateSpecializationDecl *D) {
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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 6029, __PRETTY_FUNCTION__))
;
6030
6031 if (!TD->getFirstDecl()->isFromASTFile())
6032 return;
6033 if (Chain && Chain->isProcessingUpdateRecords())
6034 return;
6035
6036 DeclsToEmitEvenIfUnreferenced.push_back(D);
6037}
6038
6039void ASTWriter::AddedCXXTemplateSpecialization(const FunctionTemplateDecl *TD,
6040 const FunctionDecl *D) {
6041 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-13~++20210413100635+64c24f493e5f/clang/lib/Serialization/ASTWriter.cpp"
, 6041, __PRETTY_FUNCTION__))
;
6042
6043 if (!TD->getFirstDecl()->isFromASTFile())
6044 return;
6045 if (Chain && Chain->isProcessingUpdateRecords())
6046 return;
6047
6048 DeclsToEmitEvenIfUnreferenced.push_back(D);
6049}
6050
6051<