Bug Summary

File:tools/clang/lib/Serialization/ASTWriter.cpp
Warning:line 2109, column 19
Potential memory leak

Annotated Source Code

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clang -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 -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -mthread-model posix -mframe-pointer=none -relaxed-aliasing -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-10/lib/clang/10.0.0 -D CLANG_VENDOR="Debian " -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-10~svn374877/build-llvm/tools/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-10~svn374877/tools/clang/include -I /build/llvm-toolchain-snapshot-10~svn374877/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-10~svn374877/build-llvm/include -I /build/llvm-toolchain-snapshot-10~svn374877/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/x86_64-linux-gnu/c++/6.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/6.3.0/../../../../include/c++/6.3.0/backward -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-10/lib/clang/10.0.0/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-unused-parameter -Wwrite-strings -Wno-missing-field-initializers -Wno-long-long -Wno-maybe-uninitialized -Wno-comment -std=c++14 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-10~svn374877/build-llvm/tools/clang/lib/Serialization -fdebug-prefix-map=/build/llvm-toolchain-snapshot-10~svn374877=. -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fobjc-runtime=gcc -fno-common -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -o /tmp/scan-build-2019-10-15-233810-7101-1 -x c++ /build/llvm-toolchain-snapshot-10~svn374877/tools/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 "clang/Serialization/ASTWriter.h"
14#include "ASTCommon.h"
15#include "ASTReaderInternals.h"
16#include "MultiOnDiskHashTable.h"
17#include "clang/AST/ASTContext.h"
18#include "clang/AST/ASTUnresolvedSet.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/RawCommentList.h"
33#include "clang/AST/TemplateName.h"
34#include "clang/AST/Type.h"
35#include "clang/AST/TypeLocVisitor.h"
36#include "clang/Basic/Diagnostic.h"
37#include "clang/Basic/DiagnosticOptions.h"
38#include "clang/Basic/FileManager.h"
39#include "clang/Basic/FileSystemOptions.h"
40#include "clang/Basic/IdentifierTable.h"
41#include "clang/Basic/LLVM.h"
42#include "clang/Basic/Lambda.h"
43#include "clang/Basic/LangOptions.h"
44#include "clang/Basic/Module.h"
45#include "clang/Basic/ObjCRuntime.h"
46#include "clang/Basic/OpenCLOptions.h"
47#include "clang/Basic/SourceLocation.h"
48#include "clang/Basic/SourceManager.h"
49#include "clang/Basic/SourceManagerInternals.h"
50#include "clang/Basic/Specifiers.h"
51#include "clang/Basic/TargetInfo.h"
52#include "clang/Basic/TargetOptions.h"
53#include "clang/Basic/Version.h"
54#include "clang/Lex/HeaderSearch.h"
55#include "clang/Lex/HeaderSearchOptions.h"
56#include "clang/Lex/MacroInfo.h"
57#include "clang/Lex/ModuleMap.h"
58#include "clang/Lex/PreprocessingRecord.h"
59#include "clang/Lex/Preprocessor.h"
60#include "clang/Lex/PreprocessorOptions.h"
61#include "clang/Lex/Token.h"
62#include "clang/Sema/IdentifierResolver.h"
63#include "clang/Sema/ObjCMethodList.h"
64#include "clang/Sema/Sema.h"
65#include "clang/Sema/Weak.h"
66#include "clang/Serialization/ASTReader.h"
67#include "clang/Serialization/InMemoryModuleCache.h"
68#include "clang/Serialization/Module.h"
69#include "clang/Serialization/ModuleFileExtension.h"
70#include "clang/Serialization/SerializationDiagnostic.h"
71#include "llvm/ADT/APFloat.h"
72#include "llvm/ADT/APInt.h"
73#include "llvm/ADT/APSInt.h"
74#include "llvm/ADT/ArrayRef.h"
75#include "llvm/ADT/DenseMap.h"
76#include "llvm/ADT/Hashing.h"
77#include "llvm/ADT/Optional.h"
78#include "llvm/ADT/PointerIntPair.h"
79#include "llvm/ADT/STLExtras.h"
80#include "llvm/ADT/ScopeExit.h"
81#include "llvm/ADT/SmallSet.h"
82#include "llvm/ADT/SmallString.h"
83#include "llvm/ADT/SmallVector.h"
84#include "llvm/ADT/StringMap.h"
85#include "llvm/ADT/StringRef.h"
86#include "llvm/Bitstream/BitCodes.h"
87#include "llvm/Bitstream/BitstreamWriter.h"
88#include "llvm/Support/Casting.h"
89#include "llvm/Support/Compression.h"
90#include "llvm/Support/DJB.h"
91#include "llvm/Support/Endian.h"
92#include "llvm/Support/EndianStream.h"
93#include "llvm/Support/Error.h"
94#include "llvm/Support/ErrorHandling.h"
95#include "llvm/Support/MemoryBuffer.h"
96#include "llvm/Support/OnDiskHashTable.h"
97#include "llvm/Support/Path.h"
98#include "llvm/Support/SHA1.h"
99#include "llvm/Support/VersionTuple.h"
100#include "llvm/Support/raw_ostream.h"
101#include <algorithm>
102#include <cassert>
103#include <cstdint>
104#include <cstdlib>
105#include <cstring>
106#include <ctime>
107#include <deque>
108#include <limits>
109#include <memory>
110#include <queue>
111#include <tuple>
112#include <utility>
113#include <vector>
114
115using namespace clang;
116using namespace clang::serialization;
117
118template <typename T, typename Allocator>
119static StringRef bytes(const std::vector<T, Allocator> &v) {
120 if (v.empty()) return StringRef();
121 return StringRef(reinterpret_cast<const char*>(&v[0]),
122 sizeof(T) * v.size());
123}
124
125template <typename T>
126static StringRef bytes(const SmallVectorImpl<T> &v) {
127 return StringRef(reinterpret_cast<const char*>(v.data()),
128 sizeof(T) * v.size());
129}
130
131//===----------------------------------------------------------------------===//
132// Type serialization
133//===----------------------------------------------------------------------===//
134
135namespace clang {
136
137 class ASTTypeWriter {
138 ASTWriter &Writer;
139 ASTRecordWriter Record;
140
141 /// Type code that corresponds to the record generated.
142 TypeCode Code = static_cast<TypeCode>(0);
143
144 /// Abbreviation to use for the record, if any.
145 unsigned AbbrevToUse = 0;
146
147 public:
148 ASTTypeWriter(ASTWriter &Writer, ASTWriter::RecordDataImpl &Record)
149 : Writer(Writer), Record(Writer, Record) {}
150
151 uint64_t Emit() {
152 return Record.Emit(Code, AbbrevToUse);
153 }
154
155 void Visit(QualType T) {
156 if (T.hasLocalNonFastQualifiers()) {
157 Qualifiers Qs = T.getLocalQualifiers();
158 Record.AddTypeRef(T.getLocalUnqualifiedType());
159 Record.push_back(Qs.getAsOpaqueValue());
160 Code = TYPE_EXT_QUAL;
161 AbbrevToUse = Writer.TypeExtQualAbbrev;
162 } else {
163 switch (T->getTypeClass()) {
164 // For all of the concrete, non-dependent types, call the
165 // appropriate visitor function.
166#define TYPE(Class, Base) \
167 case Type::Class: Visit##Class##Type(cast<Class##Type>(T)); break;
168#define ABSTRACT_TYPE(Class, Base)
169#include "clang/AST/TypeNodes.inc"
170 }
171 }
172 }
173
174 void VisitArrayType(const ArrayType *T);
175 void VisitFunctionType(const FunctionType *T);
176 void VisitTagType(const TagType *T);
177
178#define TYPE(Class, Base) void Visit##Class##Type(const Class##Type *T);
179#define ABSTRACT_TYPE(Class, Base)
180#include "clang/AST/TypeNodes.inc"
181 };
182
183} // namespace clang
184
185void ASTTypeWriter::VisitBuiltinType(const BuiltinType *T) {
186 llvm_unreachable("Built-in types are never serialized")::llvm::llvm_unreachable_internal("Built-in types are never serialized"
, "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 186)
;
187}
188
189void ASTTypeWriter::VisitComplexType(const ComplexType *T) {
190 Record.AddTypeRef(T->getElementType());
191 Code = TYPE_COMPLEX;
192}
193
194void ASTTypeWriter::VisitPointerType(const PointerType *T) {
195 Record.AddTypeRef(T->getPointeeType());
196 Code = TYPE_POINTER;
197}
198
199void ASTTypeWriter::VisitDecayedType(const DecayedType *T) {
200 Record.AddTypeRef(T->getOriginalType());
201 Code = TYPE_DECAYED;
202}
203
204void ASTTypeWriter::VisitAdjustedType(const AdjustedType *T) {
205 Record.AddTypeRef(T->getOriginalType());
206 Record.AddTypeRef(T->getAdjustedType());
207 Code = TYPE_ADJUSTED;
208}
209
210void ASTTypeWriter::VisitBlockPointerType(const BlockPointerType *T) {
211 Record.AddTypeRef(T->getPointeeType());
212 Code = TYPE_BLOCK_POINTER;
213}
214
215void ASTTypeWriter::VisitLValueReferenceType(const LValueReferenceType *T) {
216 Record.AddTypeRef(T->getPointeeTypeAsWritten());
217 Record.push_back(T->isSpelledAsLValue());
218 Code = TYPE_LVALUE_REFERENCE;
219}
220
221void ASTTypeWriter::VisitRValueReferenceType(const RValueReferenceType *T) {
222 Record.AddTypeRef(T->getPointeeTypeAsWritten());
223 Code = TYPE_RVALUE_REFERENCE;
224}
225
226void ASTTypeWriter::VisitMemberPointerType(const MemberPointerType *T) {
227 Record.AddTypeRef(T->getPointeeType());
228 Record.AddTypeRef(QualType(T->getClass(), 0));
229 Code = TYPE_MEMBER_POINTER;
230}
231
232void ASTTypeWriter::VisitArrayType(const ArrayType *T) {
233 Record.AddTypeRef(T->getElementType());
234 Record.push_back(T->getSizeModifier()); // FIXME: stable values
235 Record.push_back(T->getIndexTypeCVRQualifiers()); // FIXME: stable values
236}
237
238void ASTTypeWriter::VisitConstantArrayType(const ConstantArrayType *T) {
239 VisitArrayType(T);
240 Record.AddAPInt(T->getSize());
241 Record.AddStmt(const_cast<Expr*>(T->getSizeExpr()));
242 Code = TYPE_CONSTANT_ARRAY;
243}
244
245void ASTTypeWriter::VisitIncompleteArrayType(const IncompleteArrayType *T) {
246 VisitArrayType(T);
247 Code = TYPE_INCOMPLETE_ARRAY;
248}
249
250void ASTTypeWriter::VisitVariableArrayType(const VariableArrayType *T) {
251 VisitArrayType(T);
252 Record.AddSourceLocation(T->getLBracketLoc());
253 Record.AddSourceLocation(T->getRBracketLoc());
254 Record.AddStmt(T->getSizeExpr());
255 Code = TYPE_VARIABLE_ARRAY;
256}
257
258void ASTTypeWriter::VisitVectorType(const VectorType *T) {
259 Record.AddTypeRef(T->getElementType());
260 Record.push_back(T->getNumElements());
261 Record.push_back(T->getVectorKind());
262 Code = TYPE_VECTOR;
263}
264
265void ASTTypeWriter::VisitExtVectorType(const ExtVectorType *T) {
266 VisitVectorType(T);
267 Code = TYPE_EXT_VECTOR;
268}
269
270void ASTTypeWriter::VisitFunctionType(const FunctionType *T) {
271 Record.AddTypeRef(T->getReturnType());
272 FunctionType::ExtInfo C = T->getExtInfo();
273 Record.push_back(C.getNoReturn());
274 Record.push_back(C.getHasRegParm());
275 Record.push_back(C.getRegParm());
276 // FIXME: need to stabilize encoding of calling convention...
277 Record.push_back(C.getCC());
278 Record.push_back(C.getProducesResult());
279 Record.push_back(C.getNoCallerSavedRegs());
280 Record.push_back(C.getNoCfCheck());
281
282 if (C.getHasRegParm() || C.getRegParm() || C.getProducesResult())
283 AbbrevToUse = 0;
284}
285
286void ASTTypeWriter::VisitFunctionNoProtoType(const FunctionNoProtoType *T) {
287 VisitFunctionType(T);
288 Code = TYPE_FUNCTION_NO_PROTO;
289}
290
291static void addExceptionSpec(const FunctionProtoType *T,
292 ASTRecordWriter &Record) {
293 Record.push_back(T->getExceptionSpecType());
294 if (T->getExceptionSpecType() == EST_Dynamic) {
295 Record.push_back(T->getNumExceptions());
296 for (unsigned I = 0, N = T->getNumExceptions(); I != N; ++I)
297 Record.AddTypeRef(T->getExceptionType(I));
298 } else if (isComputedNoexcept(T->getExceptionSpecType())) {
299 Record.AddStmt(T->getNoexceptExpr());
300 } else if (T->getExceptionSpecType() == EST_Uninstantiated) {
301 Record.AddDeclRef(T->getExceptionSpecDecl());
302 Record.AddDeclRef(T->getExceptionSpecTemplate());
303 } else if (T->getExceptionSpecType() == EST_Unevaluated) {
304 Record.AddDeclRef(T->getExceptionSpecDecl());
305 }
306}
307
308void ASTTypeWriter::VisitFunctionProtoType(const FunctionProtoType *T) {
309 VisitFunctionType(T);
310
311 Record.push_back(T->isVariadic());
312 Record.push_back(T->hasTrailingReturn());
313 Record.push_back(T->getMethodQuals().getAsOpaqueValue());
314 Record.push_back(static_cast<unsigned>(T->getRefQualifier()));
315 addExceptionSpec(T, Record);
316
317 Record.push_back(T->getNumParams());
318 for (unsigned I = 0, N = T->getNumParams(); I != N; ++I)
319 Record.AddTypeRef(T->getParamType(I));
320
321 if (T->hasExtParameterInfos()) {
322 for (unsigned I = 0, N = T->getNumParams(); I != N; ++I)
323 Record.push_back(T->getExtParameterInfo(I).getOpaqueValue());
324 }
325
326 if (T->isVariadic() || T->hasTrailingReturn() || T->getMethodQuals() ||
327 T->getRefQualifier() || T->getExceptionSpecType() != EST_None ||
328 T->hasExtParameterInfos())
329 AbbrevToUse = 0;
330
331 Code = TYPE_FUNCTION_PROTO;
332}
333
334void ASTTypeWriter::VisitUnresolvedUsingType(const UnresolvedUsingType *T) {
335 Record.AddDeclRef(T->getDecl());
336 Code = TYPE_UNRESOLVED_USING;
337}
338
339void ASTTypeWriter::VisitTypedefType(const TypedefType *T) {
340 Record.AddDeclRef(T->getDecl());
341 assert(!T->isCanonicalUnqualified() && "Invalid typedef ?")((!T->isCanonicalUnqualified() && "Invalid typedef ?"
) ? static_cast<void> (0) : __assert_fail ("!T->isCanonicalUnqualified() && \"Invalid typedef ?\""
, "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 341, __PRETTY_FUNCTION__))
;
342 Record.AddTypeRef(T->getCanonicalTypeInternal());
343 Code = TYPE_TYPEDEF;
344}
345
346void ASTTypeWriter::VisitTypeOfExprType(const TypeOfExprType *T) {
347 Record.AddStmt(T->getUnderlyingExpr());
348 Code = TYPE_TYPEOF_EXPR;
349}
350
351void ASTTypeWriter::VisitTypeOfType(const TypeOfType *T) {
352 Record.AddTypeRef(T->getUnderlyingType());
353 Code = TYPE_TYPEOF;
354}
355
356void ASTTypeWriter::VisitDecltypeType(const DecltypeType *T) {
357 Record.AddTypeRef(T->getUnderlyingType());
358 Record.AddStmt(T->getUnderlyingExpr());
359 Code = TYPE_DECLTYPE;
360}
361
362void ASTTypeWriter::VisitUnaryTransformType(const UnaryTransformType *T) {
363 Record.AddTypeRef(T->getBaseType());
364 Record.AddTypeRef(T->getUnderlyingType());
365 Record.push_back(T->getUTTKind());
366 Code = TYPE_UNARY_TRANSFORM;
367}
368
369void ASTTypeWriter::VisitAutoType(const AutoType *T) {
370 Record.AddTypeRef(T->getDeducedType());
371 Record.push_back((unsigned)T->getKeyword());
372 if (T->getDeducedType().isNull())
373 Record.push_back(T->containsUnexpandedParameterPack() ? 2 :
374 T->isDependentType() ? 1 : 0);
375 Code = TYPE_AUTO;
376}
377
378void ASTTypeWriter::VisitDeducedTemplateSpecializationType(
379 const DeducedTemplateSpecializationType *T) {
380 Record.AddTemplateName(T->getTemplateName());
381 Record.AddTypeRef(T->getDeducedType());
382 if (T->getDeducedType().isNull())
383 Record.push_back(T->isDependentType());
384 Code = TYPE_DEDUCED_TEMPLATE_SPECIALIZATION;
385}
386
387void ASTTypeWriter::VisitTagType(const TagType *T) {
388 Record.push_back(T->isDependentType());
389 Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
390 assert(!T->isBeingDefined() &&((!T->isBeingDefined() && "Cannot serialize in the middle of a type definition"
) ? static_cast<void> (0) : __assert_fail ("!T->isBeingDefined() && \"Cannot serialize in the middle of a type definition\""
, "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 391, __PRETTY_FUNCTION__))
391 "Cannot serialize in the middle of a type definition")((!T->isBeingDefined() && "Cannot serialize in the middle of a type definition"
) ? static_cast<void> (0) : __assert_fail ("!T->isBeingDefined() && \"Cannot serialize in the middle of a type definition\""
, "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 391, __PRETTY_FUNCTION__))
;
392}
393
394void ASTTypeWriter::VisitRecordType(const RecordType *T) {
395 VisitTagType(T);
396 Code = TYPE_RECORD;
397}
398
399void ASTTypeWriter::VisitEnumType(const EnumType *T) {
400 VisitTagType(T);
401 Code = TYPE_ENUM;
402}
403
404void ASTTypeWriter::VisitAttributedType(const AttributedType *T) {
405 Record.AddTypeRef(T->getModifiedType());
406 Record.AddTypeRef(T->getEquivalentType());
407 Record.push_back(T->getAttrKind());
408 Code = TYPE_ATTRIBUTED;
409}
410
411void
412ASTTypeWriter::VisitSubstTemplateTypeParmType(
413 const SubstTemplateTypeParmType *T) {
414 Record.AddTypeRef(QualType(T->getReplacedParameter(), 0));
415 Record.AddTypeRef(T->getReplacementType());
416 Code = TYPE_SUBST_TEMPLATE_TYPE_PARM;
417}
418
419void
420ASTTypeWriter::VisitSubstTemplateTypeParmPackType(
421 const SubstTemplateTypeParmPackType *T) {
422 Record.AddTypeRef(QualType(T->getReplacedParameter(), 0));
423 Record.AddTemplateArgument(T->getArgumentPack());
424 Code = TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK;
425}
426
427void
428ASTTypeWriter::VisitTemplateSpecializationType(
429 const TemplateSpecializationType *T) {
430 Record.push_back(T->isDependentType());
431 Record.AddTemplateName(T->getTemplateName());
432 Record.push_back(T->getNumArgs());
433 for (const auto &ArgI : *T)
434 Record.AddTemplateArgument(ArgI);
435 Record.AddTypeRef(T->isTypeAlias() ? T->getAliasedType()
436 : T->isCanonicalUnqualified()
437 ? QualType()
438 : T->getCanonicalTypeInternal());
439 Code = TYPE_TEMPLATE_SPECIALIZATION;
440}
441
442void
443ASTTypeWriter::VisitDependentSizedArrayType(const DependentSizedArrayType *T) {
444 VisitArrayType(T);
445 Record.AddStmt(T->getSizeExpr());
446 Record.AddSourceRange(T->getBracketsRange());
447 Code = TYPE_DEPENDENT_SIZED_ARRAY;
448}
449
450void
451ASTTypeWriter::VisitDependentSizedExtVectorType(
452 const DependentSizedExtVectorType *T) {
453 Record.AddTypeRef(T->getElementType());
454 Record.AddStmt(T->getSizeExpr());
455 Record.AddSourceLocation(T->getAttributeLoc());
456 Code = TYPE_DEPENDENT_SIZED_EXT_VECTOR;
457}
458
459void ASTTypeWriter::VisitDependentVectorType(const DependentVectorType *T) {
460 Record.AddTypeRef(T->getElementType());
461 Record.AddStmt(const_cast<Expr*>(T->getSizeExpr()));
462 Record.AddSourceLocation(T->getAttributeLoc());
463 Record.push_back(T->getVectorKind());
464 Code = TYPE_DEPENDENT_SIZED_VECTOR;
465}
466
467void
468ASTTypeWriter::VisitDependentAddressSpaceType(
469 const DependentAddressSpaceType *T) {
470 Record.AddTypeRef(T->getPointeeType());
471 Record.AddStmt(T->getAddrSpaceExpr());
472 Record.AddSourceLocation(T->getAttributeLoc());
473 Code = TYPE_DEPENDENT_ADDRESS_SPACE;
474}
475
476void
477ASTTypeWriter::VisitTemplateTypeParmType(const TemplateTypeParmType *T) {
478 Record.push_back(T->getDepth());
479 Record.push_back(T->getIndex());
480 Record.push_back(T->isParameterPack());
481 Record.AddDeclRef(T->getDecl());
482 Code = TYPE_TEMPLATE_TYPE_PARM;
483}
484
485void
486ASTTypeWriter::VisitDependentNameType(const DependentNameType *T) {
487 Record.push_back(T->getKeyword());
488 Record.AddNestedNameSpecifier(T->getQualifier());
489 Record.AddIdentifierRef(T->getIdentifier());
490 Record.AddTypeRef(
491 T->isCanonicalUnqualified() ? QualType() : T->getCanonicalTypeInternal());
492 Code = TYPE_DEPENDENT_NAME;
493}
494
495void
496ASTTypeWriter::VisitDependentTemplateSpecializationType(
497 const DependentTemplateSpecializationType *T) {
498 Record.push_back(T->getKeyword());
499 Record.AddNestedNameSpecifier(T->getQualifier());
500 Record.AddIdentifierRef(T->getIdentifier());
501 Record.push_back(T->getNumArgs());
502 for (const auto &I : *T)
503 Record.AddTemplateArgument(I);
504 Code = TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION;
505}
506
507void ASTTypeWriter::VisitPackExpansionType(const PackExpansionType *T) {
508 Record.AddTypeRef(T->getPattern());
509 if (Optional<unsigned> NumExpansions = T->getNumExpansions())
510 Record.push_back(*NumExpansions + 1);
511 else
512 Record.push_back(0);
513 Code = TYPE_PACK_EXPANSION;
514}
515
516void ASTTypeWriter::VisitParenType(const ParenType *T) {
517 Record.AddTypeRef(T->getInnerType());
518 Code = TYPE_PAREN;
519}
520
521void ASTTypeWriter::VisitMacroQualifiedType(const MacroQualifiedType *T) {
522 Record.AddTypeRef(T->getUnderlyingType());
523 Record.AddIdentifierRef(T->getMacroIdentifier());
524 Code = TYPE_MACRO_QUALIFIED;
525}
526
527void ASTTypeWriter::VisitElaboratedType(const ElaboratedType *T) {
528 Record.push_back(T->getKeyword());
529 Record.AddNestedNameSpecifier(T->getQualifier());
530 Record.AddTypeRef(T->getNamedType());
531 Record.AddDeclRef(T->getOwnedTagDecl());
532 Code = TYPE_ELABORATED;
533}
534
535void ASTTypeWriter::VisitInjectedClassNameType(const InjectedClassNameType *T) {
536 Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
537 Record.AddTypeRef(T->getInjectedSpecializationType());
538 Code = TYPE_INJECTED_CLASS_NAME;
539}
540
541void ASTTypeWriter::VisitObjCInterfaceType(const ObjCInterfaceType *T) {
542 Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
543 Code = TYPE_OBJC_INTERFACE;
544}
545
546void ASTTypeWriter::VisitObjCTypeParamType(const ObjCTypeParamType *T) {
547 Record.AddDeclRef(T->getDecl());
548 Record.push_back(T->getNumProtocols());
549 for (const auto *I : T->quals())
550 Record.AddDeclRef(I);
551 Code = TYPE_OBJC_TYPE_PARAM;
552}
553
554void ASTTypeWriter::VisitObjCObjectType(const ObjCObjectType *T) {
555 Record.AddTypeRef(T->getBaseType());
556 Record.push_back(T->getTypeArgsAsWritten().size());
557 for (auto TypeArg : T->getTypeArgsAsWritten())
558 Record.AddTypeRef(TypeArg);
559 Record.push_back(T->getNumProtocols());
560 for (const auto *I : T->quals())
561 Record.AddDeclRef(I);
562 Record.push_back(T->isKindOfTypeAsWritten());
563 Code = TYPE_OBJC_OBJECT;
564}
565
566void
567ASTTypeWriter::VisitObjCObjectPointerType(const ObjCObjectPointerType *T) {
568 Record.AddTypeRef(T->getPointeeType());
569 Code = TYPE_OBJC_OBJECT_POINTER;
570}
571
572void
573ASTTypeWriter::VisitAtomicType(const AtomicType *T) {
574 Record.AddTypeRef(T->getValueType());
575 Code = TYPE_ATOMIC;
576}
577
578void
579ASTTypeWriter::VisitPipeType(const PipeType *T) {
580 Record.AddTypeRef(T->getElementType());
581 Record.push_back(T->isReadOnly());
582 Code = TYPE_PIPE;
583}
584
585namespace {
586
587class TypeLocWriter : public TypeLocVisitor<TypeLocWriter> {
588 ASTRecordWriter &Record;
589
590public:
591 TypeLocWriter(ASTRecordWriter &Record) : Record(Record) {}
592
593#define ABSTRACT_TYPELOC(CLASS, PARENT)
594#define TYPELOC(CLASS, PARENT) \
595 void Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc);
596#include "clang/AST/TypeLocNodes.def"
597
598 void VisitArrayTypeLoc(ArrayTypeLoc TyLoc);
599 void VisitFunctionTypeLoc(FunctionTypeLoc TyLoc);
600};
601
602} // namespace
603
604void TypeLocWriter::VisitQualifiedTypeLoc(QualifiedTypeLoc TL) {
605 // nothing to do
606}
607
608void TypeLocWriter::VisitBuiltinTypeLoc(BuiltinTypeLoc TL) {
609 Record.AddSourceLocation(TL.getBuiltinLoc());
610 if (TL.needsExtraLocalData()) {
611 Record.push_back(TL.getWrittenTypeSpec());
612 Record.push_back(TL.getWrittenSignSpec());
613 Record.push_back(TL.getWrittenWidthSpec());
614 Record.push_back(TL.hasModeAttr());
615 }
616}
617
618void TypeLocWriter::VisitComplexTypeLoc(ComplexTypeLoc TL) {
619 Record.AddSourceLocation(TL.getNameLoc());
620}
621
622void TypeLocWriter::VisitPointerTypeLoc(PointerTypeLoc TL) {
623 Record.AddSourceLocation(TL.getStarLoc());
624}
625
626void TypeLocWriter::VisitDecayedTypeLoc(DecayedTypeLoc TL) {
627 // nothing to do
628}
629
630void TypeLocWriter::VisitAdjustedTypeLoc(AdjustedTypeLoc TL) {
631 // nothing to do
632}
633
634void TypeLocWriter::VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL) {
635 Record.AddSourceLocation(TL.getCaretLoc());
636}
637
638void TypeLocWriter::VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL) {
639 Record.AddSourceLocation(TL.getAmpLoc());
640}
641
642void TypeLocWriter::VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL) {
643 Record.AddSourceLocation(TL.getAmpAmpLoc());
644}
645
646void TypeLocWriter::VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL) {
647 Record.AddSourceLocation(TL.getStarLoc());
648 Record.AddTypeSourceInfo(TL.getClassTInfo());
649}
650
651void TypeLocWriter::VisitArrayTypeLoc(ArrayTypeLoc TL) {
652 Record.AddSourceLocation(TL.getLBracketLoc());
653 Record.AddSourceLocation(TL.getRBracketLoc());
654 Record.push_back(TL.getSizeExpr() ? 1 : 0);
655 if (TL.getSizeExpr())
656 Record.AddStmt(TL.getSizeExpr());
657}
658
659void TypeLocWriter::VisitConstantArrayTypeLoc(ConstantArrayTypeLoc TL) {
660 VisitArrayTypeLoc(TL);
661}
662
663void TypeLocWriter::VisitIncompleteArrayTypeLoc(IncompleteArrayTypeLoc TL) {
664 VisitArrayTypeLoc(TL);
665}
666
667void TypeLocWriter::VisitVariableArrayTypeLoc(VariableArrayTypeLoc TL) {
668 VisitArrayTypeLoc(TL);
669}
670
671void TypeLocWriter::VisitDependentSizedArrayTypeLoc(
672 DependentSizedArrayTypeLoc TL) {
673 VisitArrayTypeLoc(TL);
674}
675
676void TypeLocWriter::VisitDependentAddressSpaceTypeLoc(
677 DependentAddressSpaceTypeLoc TL) {
678 Record.AddSourceLocation(TL.getAttrNameLoc());
679 SourceRange range = TL.getAttrOperandParensRange();
680 Record.AddSourceLocation(range.getBegin());
681 Record.AddSourceLocation(range.getEnd());
682 Record.AddStmt(TL.getAttrExprOperand());
683}
684
685void TypeLocWriter::VisitDependentSizedExtVectorTypeLoc(
686 DependentSizedExtVectorTypeLoc TL) {
687 Record.AddSourceLocation(TL.getNameLoc());
688}
689
690void TypeLocWriter::VisitVectorTypeLoc(VectorTypeLoc TL) {
691 Record.AddSourceLocation(TL.getNameLoc());
692}
693
694void TypeLocWriter::VisitDependentVectorTypeLoc(
695 DependentVectorTypeLoc TL) {
696 Record.AddSourceLocation(TL.getNameLoc());
697}
698
699void TypeLocWriter::VisitExtVectorTypeLoc(ExtVectorTypeLoc TL) {
700 Record.AddSourceLocation(TL.getNameLoc());
701}
702
703void TypeLocWriter::VisitFunctionTypeLoc(FunctionTypeLoc TL) {
704 Record.AddSourceLocation(TL.getLocalRangeBegin());
705 Record.AddSourceLocation(TL.getLParenLoc());
706 Record.AddSourceLocation(TL.getRParenLoc());
707 Record.AddSourceRange(TL.getExceptionSpecRange());
708 Record.AddSourceLocation(TL.getLocalRangeEnd());
709 for (unsigned i = 0, e = TL.getNumParams(); i != e; ++i)
710 Record.AddDeclRef(TL.getParam(i));
711}
712
713void TypeLocWriter::VisitFunctionProtoTypeLoc(FunctionProtoTypeLoc TL) {
714 VisitFunctionTypeLoc(TL);
715}
716
717void TypeLocWriter::VisitFunctionNoProtoTypeLoc(FunctionNoProtoTypeLoc TL) {
718 VisitFunctionTypeLoc(TL);
719}
720
721void TypeLocWriter::VisitUnresolvedUsingTypeLoc(UnresolvedUsingTypeLoc TL) {
722 Record.AddSourceLocation(TL.getNameLoc());
723}
724
725void TypeLocWriter::VisitTypedefTypeLoc(TypedefTypeLoc TL) {
726 Record.AddSourceLocation(TL.getNameLoc());
727}
728
729void TypeLocWriter::VisitObjCTypeParamTypeLoc(ObjCTypeParamTypeLoc TL) {
730 if (TL.getNumProtocols()) {
731 Record.AddSourceLocation(TL.getProtocolLAngleLoc());
732 Record.AddSourceLocation(TL.getProtocolRAngleLoc());
733 }
734 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
735 Record.AddSourceLocation(TL.getProtocolLoc(i));
736}
737
738void TypeLocWriter::VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL) {
739 Record.AddSourceLocation(TL.getTypeofLoc());
740 Record.AddSourceLocation(TL.getLParenLoc());
741 Record.AddSourceLocation(TL.getRParenLoc());
742}
743
744void TypeLocWriter::VisitTypeOfTypeLoc(TypeOfTypeLoc TL) {
745 Record.AddSourceLocation(TL.getTypeofLoc());
746 Record.AddSourceLocation(TL.getLParenLoc());
747 Record.AddSourceLocation(TL.getRParenLoc());
748 Record.AddTypeSourceInfo(TL.getUnderlyingTInfo());
749}
750
751void TypeLocWriter::VisitDecltypeTypeLoc(DecltypeTypeLoc TL) {
752 Record.AddSourceLocation(TL.getNameLoc());
753}
754
755void TypeLocWriter::VisitUnaryTransformTypeLoc(UnaryTransformTypeLoc TL) {
756 Record.AddSourceLocation(TL.getKWLoc());
757 Record.AddSourceLocation(TL.getLParenLoc());
758 Record.AddSourceLocation(TL.getRParenLoc());
759 Record.AddTypeSourceInfo(TL.getUnderlyingTInfo());
760}
761
762void TypeLocWriter::VisitAutoTypeLoc(AutoTypeLoc TL) {
763 Record.AddSourceLocation(TL.getNameLoc());
764}
765
766void TypeLocWriter::VisitDeducedTemplateSpecializationTypeLoc(
767 DeducedTemplateSpecializationTypeLoc TL) {
768 Record.AddSourceLocation(TL.getTemplateNameLoc());
769}
770
771void TypeLocWriter::VisitRecordTypeLoc(RecordTypeLoc TL) {
772 Record.AddSourceLocation(TL.getNameLoc());
773}
774
775void TypeLocWriter::VisitEnumTypeLoc(EnumTypeLoc TL) {
776 Record.AddSourceLocation(TL.getNameLoc());
777}
778
779void TypeLocWriter::VisitAttributedTypeLoc(AttributedTypeLoc TL) {
780 Record.AddAttr(TL.getAttr());
781}
782
783void TypeLocWriter::VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL) {
784 Record.AddSourceLocation(TL.getNameLoc());
785}
786
787void TypeLocWriter::VisitSubstTemplateTypeParmTypeLoc(
788 SubstTemplateTypeParmTypeLoc TL) {
789 Record.AddSourceLocation(TL.getNameLoc());
790}
791
792void TypeLocWriter::VisitSubstTemplateTypeParmPackTypeLoc(
793 SubstTemplateTypeParmPackTypeLoc TL) {
794 Record.AddSourceLocation(TL.getNameLoc());
795}
796
797void TypeLocWriter::VisitTemplateSpecializationTypeLoc(
798 TemplateSpecializationTypeLoc TL) {
799 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
800 Record.AddSourceLocation(TL.getTemplateNameLoc());
801 Record.AddSourceLocation(TL.getLAngleLoc());
802 Record.AddSourceLocation(TL.getRAngleLoc());
803 for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i)
804 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(i).getArgument().getKind(),
805 TL.getArgLoc(i).getLocInfo());
806}
807
808void TypeLocWriter::VisitParenTypeLoc(ParenTypeLoc TL) {
809 Record.AddSourceLocation(TL.getLParenLoc());
810 Record.AddSourceLocation(TL.getRParenLoc());
811}
812
813void TypeLocWriter::VisitMacroQualifiedTypeLoc(MacroQualifiedTypeLoc TL) {
814 Record.AddSourceLocation(TL.getExpansionLoc());
815}
816
817void TypeLocWriter::VisitElaboratedTypeLoc(ElaboratedTypeLoc TL) {
818 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
819 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
820}
821
822void TypeLocWriter::VisitInjectedClassNameTypeLoc(InjectedClassNameTypeLoc TL) {
823 Record.AddSourceLocation(TL.getNameLoc());
824}
825
826void TypeLocWriter::VisitDependentNameTypeLoc(DependentNameTypeLoc TL) {
827 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
828 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
829 Record.AddSourceLocation(TL.getNameLoc());
830}
831
832void TypeLocWriter::VisitDependentTemplateSpecializationTypeLoc(
833 DependentTemplateSpecializationTypeLoc TL) {
834 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
835 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
836 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
837 Record.AddSourceLocation(TL.getTemplateNameLoc());
838 Record.AddSourceLocation(TL.getLAngleLoc());
839 Record.AddSourceLocation(TL.getRAngleLoc());
840 for (unsigned I = 0, E = TL.getNumArgs(); I != E; ++I)
841 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(I).getArgument().getKind(),
842 TL.getArgLoc(I).getLocInfo());
843}
844
845void TypeLocWriter::VisitPackExpansionTypeLoc(PackExpansionTypeLoc TL) {
846 Record.AddSourceLocation(TL.getEllipsisLoc());
847}
848
849void TypeLocWriter::VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) {
850 Record.AddSourceLocation(TL.getNameLoc());
851}
852
853void TypeLocWriter::VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) {
854 Record.push_back(TL.hasBaseTypeAsWritten());
855 Record.AddSourceLocation(TL.getTypeArgsLAngleLoc());
856 Record.AddSourceLocation(TL.getTypeArgsRAngleLoc());
857 for (unsigned i = 0, e = TL.getNumTypeArgs(); i != e; ++i)
858 Record.AddTypeSourceInfo(TL.getTypeArgTInfo(i));
859 Record.AddSourceLocation(TL.getProtocolLAngleLoc());
860 Record.AddSourceLocation(TL.getProtocolRAngleLoc());
861 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
862 Record.AddSourceLocation(TL.getProtocolLoc(i));
863}
864
865void TypeLocWriter::VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) {
866 Record.AddSourceLocation(TL.getStarLoc());
867}
868
869void TypeLocWriter::VisitAtomicTypeLoc(AtomicTypeLoc TL) {
870 Record.AddSourceLocation(TL.getKWLoc());
871 Record.AddSourceLocation(TL.getLParenLoc());
872 Record.AddSourceLocation(TL.getRParenLoc());
873}
874
875void TypeLocWriter::VisitPipeTypeLoc(PipeTypeLoc TL) {
876 Record.AddSourceLocation(TL.getKWLoc());
877}
878
879void ASTWriter::WriteTypeAbbrevs() {
880 using namespace llvm;
881
882 std::shared_ptr<BitCodeAbbrev> Abv;
883
884 // Abbreviation for TYPE_EXT_QUAL
885 Abv = std::make_shared<BitCodeAbbrev>();
886 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_EXT_QUAL));
887 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
888 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 3)); // Quals
889 TypeExtQualAbbrev = Stream.EmitAbbrev(std::move(Abv));
890
891 // Abbreviation for TYPE_FUNCTION_PROTO
892 Abv = std::make_shared<BitCodeAbbrev>();
893 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_FUNCTION_PROTO));
894 // FunctionType
895 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ReturnType
896 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // NoReturn
897 Abv->Add(BitCodeAbbrevOp(0)); // HasRegParm
898 Abv->Add(BitCodeAbbrevOp(0)); // RegParm
899 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 4)); // CC
900 Abv->Add(BitCodeAbbrevOp(0)); // ProducesResult
901 Abv->Add(BitCodeAbbrevOp(0)); // NoCallerSavedRegs
902 Abv->Add(BitCodeAbbrevOp(0)); // NoCfCheck
903 // FunctionProtoType
904 Abv->Add(BitCodeAbbrevOp(0)); // IsVariadic
905 Abv->Add(BitCodeAbbrevOp(0)); // HasTrailingReturn
906 Abv->Add(BitCodeAbbrevOp(0)); // TypeQuals
907 Abv->Add(BitCodeAbbrevOp(0)); // RefQualifier
908 Abv->Add(BitCodeAbbrevOp(EST_None)); // ExceptionSpec
909 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // NumParams
910 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
911 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Params
912 TypeFunctionProtoAbbrev = Stream.EmitAbbrev(std::move(Abv));
913}
914
915//===----------------------------------------------------------------------===//
916// ASTWriter Implementation
917//===----------------------------------------------------------------------===//
918
919static void EmitBlockID(unsigned ID, const char *Name,
920 llvm::BitstreamWriter &Stream,
921 ASTWriter::RecordDataImpl &Record) {
922 Record.clear();
923 Record.push_back(ID);
924 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETBID, Record);
925
926 // Emit the block name if present.
927 if (!Name || Name[0] == 0)
928 return;
929 Record.clear();
930 while (*Name)
931 Record.push_back(*Name++);
932 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_BLOCKNAME, Record);
933}
934
935static void EmitRecordID(unsigned ID, const char *Name,
936 llvm::BitstreamWriter &Stream,
937 ASTWriter::RecordDataImpl &Record) {
938 Record.clear();
939 Record.push_back(ID);
940 while (*Name)
941 Record.push_back(*Name++);
942 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETRECORDNAME, Record);
943}
944
945static void AddStmtsExprs(llvm::BitstreamWriter &Stream,
946 ASTWriter::RecordDataImpl &Record) {
947#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
948 RECORD(STMT_STOP);
949 RECORD(STMT_NULL_PTR);
950 RECORD(STMT_REF_PTR);
951 RECORD(STMT_NULL);
952 RECORD(STMT_COMPOUND);
953 RECORD(STMT_CASE);
954 RECORD(STMT_DEFAULT);
955 RECORD(STMT_LABEL);
956 RECORD(STMT_ATTRIBUTED);
957 RECORD(STMT_IF);
958 RECORD(STMT_SWITCH);
959 RECORD(STMT_WHILE);
960 RECORD(STMT_DO);
961 RECORD(STMT_FOR);
962 RECORD(STMT_GOTO);
963 RECORD(STMT_INDIRECT_GOTO);
964 RECORD(STMT_CONTINUE);
965 RECORD(STMT_BREAK);
966 RECORD(STMT_RETURN);
967 RECORD(STMT_DECL);
968 RECORD(STMT_GCCASM);
969 RECORD(STMT_MSASM);
970 RECORD(EXPR_PREDEFINED);
971 RECORD(EXPR_DECL_REF);
972 RECORD(EXPR_INTEGER_LITERAL);
973 RECORD(EXPR_FLOATING_LITERAL);
974 RECORD(EXPR_IMAGINARY_LITERAL);
975 RECORD(EXPR_STRING_LITERAL);
976 RECORD(EXPR_CHARACTER_LITERAL);
977 RECORD(EXPR_PAREN);
978 RECORD(EXPR_PAREN_LIST);
979 RECORD(EXPR_UNARY_OPERATOR);
980 RECORD(EXPR_SIZEOF_ALIGN_OF);
981 RECORD(EXPR_ARRAY_SUBSCRIPT);
982 RECORD(EXPR_CALL);
983 RECORD(EXPR_MEMBER);
984 RECORD(EXPR_BINARY_OPERATOR);
985 RECORD(EXPR_COMPOUND_ASSIGN_OPERATOR);
986 RECORD(EXPR_CONDITIONAL_OPERATOR);
987 RECORD(EXPR_IMPLICIT_CAST);
988 RECORD(EXPR_CSTYLE_CAST);
989 RECORD(EXPR_COMPOUND_LITERAL);
990 RECORD(EXPR_EXT_VECTOR_ELEMENT);
991 RECORD(EXPR_INIT_LIST);
992 RECORD(EXPR_DESIGNATED_INIT);
993 RECORD(EXPR_DESIGNATED_INIT_UPDATE);
994 RECORD(EXPR_IMPLICIT_VALUE_INIT);
995 RECORD(EXPR_NO_INIT);
996 RECORD(EXPR_VA_ARG);
997 RECORD(EXPR_ADDR_LABEL);
998 RECORD(EXPR_STMT);
999 RECORD(EXPR_CHOOSE);
1000 RECORD(EXPR_GNU_NULL);
1001 RECORD(EXPR_SHUFFLE_VECTOR);
1002 RECORD(EXPR_BLOCK);
1003 RECORD(EXPR_GENERIC_SELECTION);
1004 RECORD(EXPR_OBJC_STRING_LITERAL);
1005 RECORD(EXPR_OBJC_BOXED_EXPRESSION);
1006 RECORD(EXPR_OBJC_ARRAY_LITERAL);
1007 RECORD(EXPR_OBJC_DICTIONARY_LITERAL);
1008 RECORD(EXPR_OBJC_ENCODE);
1009 RECORD(EXPR_OBJC_SELECTOR_EXPR);
1010 RECORD(EXPR_OBJC_PROTOCOL_EXPR);
1011 RECORD(EXPR_OBJC_IVAR_REF_EXPR);
1012 RECORD(EXPR_OBJC_PROPERTY_REF_EXPR);
1013 RECORD(EXPR_OBJC_KVC_REF_EXPR);
1014 RECORD(EXPR_OBJC_MESSAGE_EXPR);
1015 RECORD(STMT_OBJC_FOR_COLLECTION);
1016 RECORD(STMT_OBJC_CATCH);
1017 RECORD(STMT_OBJC_FINALLY);
1018 RECORD(STMT_OBJC_AT_TRY);
1019 RECORD(STMT_OBJC_AT_SYNCHRONIZED);
1020 RECORD(STMT_OBJC_AT_THROW);
1021 RECORD(EXPR_OBJC_BOOL_LITERAL);
1022 RECORD(STMT_CXX_CATCH);
1023 RECORD(STMT_CXX_TRY);
1024 RECORD(STMT_CXX_FOR_RANGE);
1025 RECORD(EXPR_CXX_OPERATOR_CALL);
1026 RECORD(EXPR_CXX_MEMBER_CALL);
1027 RECORD(EXPR_CXX_CONSTRUCT);
1028 RECORD(EXPR_CXX_TEMPORARY_OBJECT);
1029 RECORD(EXPR_CXX_STATIC_CAST);
1030 RECORD(EXPR_CXX_DYNAMIC_CAST);
1031 RECORD(EXPR_CXX_REINTERPRET_CAST);
1032 RECORD(EXPR_CXX_CONST_CAST);
1033 RECORD(EXPR_CXX_FUNCTIONAL_CAST);
1034 RECORD(EXPR_USER_DEFINED_LITERAL);
1035 RECORD(EXPR_CXX_STD_INITIALIZER_LIST);
1036 RECORD(EXPR_CXX_BOOL_LITERAL);
1037 RECORD(EXPR_CXX_NULL_PTR_LITERAL);
1038 RECORD(EXPR_CXX_TYPEID_EXPR);
1039 RECORD(EXPR_CXX_TYPEID_TYPE);
1040 RECORD(EXPR_CXX_THIS);
1041 RECORD(EXPR_CXX_THROW);
1042 RECORD(EXPR_CXX_DEFAULT_ARG);
1043 RECORD(EXPR_CXX_DEFAULT_INIT);
1044 RECORD(EXPR_CXX_BIND_TEMPORARY);
1045 RECORD(EXPR_CXX_SCALAR_VALUE_INIT);
1046 RECORD(EXPR_CXX_NEW);
1047 RECORD(EXPR_CXX_DELETE);
1048 RECORD(EXPR_CXX_PSEUDO_DESTRUCTOR);
1049 RECORD(EXPR_EXPR_WITH_CLEANUPS);
1050 RECORD(EXPR_CXX_DEPENDENT_SCOPE_MEMBER);
1051 RECORD(EXPR_CXX_DEPENDENT_SCOPE_DECL_REF);
1052 RECORD(EXPR_CXX_UNRESOLVED_CONSTRUCT);
1053 RECORD(EXPR_CXX_UNRESOLVED_MEMBER);
1054 RECORD(EXPR_CXX_UNRESOLVED_LOOKUP);
1055 RECORD(EXPR_CXX_EXPRESSION_TRAIT);
1056 RECORD(EXPR_CXX_NOEXCEPT);
1057 RECORD(EXPR_OPAQUE_VALUE);
1058 RECORD(EXPR_BINARY_CONDITIONAL_OPERATOR);
1059 RECORD(EXPR_TYPE_TRAIT);
1060 RECORD(EXPR_ARRAY_TYPE_TRAIT);
1061 RECORD(EXPR_PACK_EXPANSION);
1062 RECORD(EXPR_SIZEOF_PACK);
1063 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM);
1064 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK);
1065 RECORD(EXPR_FUNCTION_PARM_PACK);
1066 RECORD(EXPR_MATERIALIZE_TEMPORARY);
1067 RECORD(EXPR_CUDA_KERNEL_CALL);
1068 RECORD(EXPR_CXX_UUIDOF_EXPR);
1069 RECORD(EXPR_CXX_UUIDOF_TYPE);
1070 RECORD(EXPR_LAMBDA);
1071#undef RECORD
1072}
1073
1074void ASTWriter::WriteBlockInfoBlock() {
1075 RecordData Record;
1076 Stream.EnterBlockInfoBlock();
1077
1078#define BLOCK(X) EmitBlockID(X ## _ID, #X, Stream, Record)
1079#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
1080
1081 // Control Block.
1082 BLOCK(CONTROL_BLOCK);
1083 RECORD(METADATA);
1084 RECORD(MODULE_NAME);
1085 RECORD(MODULE_DIRECTORY);
1086 RECORD(MODULE_MAP_FILE);
1087 RECORD(IMPORTS);
1088 RECORD(ORIGINAL_FILE);
1089 RECORD(ORIGINAL_PCH_DIR);
1090 RECORD(ORIGINAL_FILE_ID);
1091 RECORD(INPUT_FILE_OFFSETS);
1092
1093 BLOCK(OPTIONS_BLOCK);
1094 RECORD(LANGUAGE_OPTIONS);
1095 RECORD(TARGET_OPTIONS);
1096 RECORD(FILE_SYSTEM_OPTIONS);
1097 RECORD(HEADER_SEARCH_OPTIONS);
1098 RECORD(PREPROCESSOR_OPTIONS);
1099
1100 BLOCK(INPUT_FILES_BLOCK);
1101 RECORD(INPUT_FILE);
1102
1103 // AST Top-Level Block.
1104 BLOCK(AST_BLOCK);
1105 RECORD(TYPE_OFFSET);
1106 RECORD(DECL_OFFSET);
1107 RECORD(IDENTIFIER_OFFSET);
1108 RECORD(IDENTIFIER_TABLE);
1109 RECORD(EAGERLY_DESERIALIZED_DECLS);
1110 RECORD(MODULAR_CODEGEN_DECLS);
1111 RECORD(SPECIAL_TYPES);
1112 RECORD(STATISTICS);
1113 RECORD(TENTATIVE_DEFINITIONS);
1114 RECORD(SELECTOR_OFFSETS);
1115 RECORD(METHOD_POOL);
1116 RECORD(PP_COUNTER_VALUE);
1117 RECORD(SOURCE_LOCATION_OFFSETS);
1118 RECORD(SOURCE_LOCATION_PRELOADS);
1119 RECORD(EXT_VECTOR_DECLS);
1120 RECORD(UNUSED_FILESCOPED_DECLS);
1121 RECORD(PPD_ENTITIES_OFFSETS);
1122 RECORD(VTABLE_USES);
1123 RECORD(PPD_SKIPPED_RANGES);
1124 RECORD(REFERENCED_SELECTOR_POOL);
1125 RECORD(TU_UPDATE_LEXICAL);
1126 RECORD(SEMA_DECL_REFS);
1127 RECORD(WEAK_UNDECLARED_IDENTIFIERS);
1128 RECORD(PENDING_IMPLICIT_INSTANTIATIONS);
1129 RECORD(UPDATE_VISIBLE);
1130 RECORD(DECL_UPDATE_OFFSETS);
1131 RECORD(DECL_UPDATES);
1132 RECORD(CUDA_SPECIAL_DECL_REFS);
1133 RECORD(HEADER_SEARCH_TABLE);
1134 RECORD(FP_PRAGMA_OPTIONS);
1135 RECORD(OPENCL_EXTENSIONS);
1136 RECORD(OPENCL_EXTENSION_TYPES);
1137 RECORD(OPENCL_EXTENSION_DECLS);
1138 RECORD(DELEGATING_CTORS);
1139 RECORD(KNOWN_NAMESPACES);
1140 RECORD(MODULE_OFFSET_MAP);
1141 RECORD(SOURCE_MANAGER_LINE_TABLE);
1142 RECORD(OBJC_CATEGORIES_MAP);
1143 RECORD(FILE_SORTED_DECLS);
1144 RECORD(IMPORTED_MODULES);
1145 RECORD(OBJC_CATEGORIES);
1146 RECORD(MACRO_OFFSET);
1147 RECORD(INTERESTING_IDENTIFIERS);
1148 RECORD(UNDEFINED_BUT_USED);
1149 RECORD(LATE_PARSED_TEMPLATE);
1150 RECORD(OPTIMIZE_PRAGMA_OPTIONS);
1151 RECORD(MSSTRUCT_PRAGMA_OPTIONS);
1152 RECORD(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS);
1153 RECORD(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES);
1154 RECORD(DELETE_EXPRS_TO_ANALYZE);
1155 RECORD(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH);
1156 RECORD(PP_CONDITIONAL_STACK);
1157
1158 // SourceManager Block.
1159 BLOCK(SOURCE_MANAGER_BLOCK);
1160 RECORD(SM_SLOC_FILE_ENTRY);
1161 RECORD(SM_SLOC_BUFFER_ENTRY);
1162 RECORD(SM_SLOC_BUFFER_BLOB);
1163 RECORD(SM_SLOC_BUFFER_BLOB_COMPRESSED);
1164 RECORD(SM_SLOC_EXPANSION_ENTRY);
1165
1166 // Preprocessor Block.
1167 BLOCK(PREPROCESSOR_BLOCK);
1168 RECORD(PP_MACRO_DIRECTIVE_HISTORY);
1169 RECORD(PP_MACRO_FUNCTION_LIKE);
1170 RECORD(PP_MACRO_OBJECT_LIKE);
1171 RECORD(PP_MODULE_MACRO);
1172 RECORD(PP_TOKEN);
1173
1174 // Submodule Block.
1175 BLOCK(SUBMODULE_BLOCK);
1176 RECORD(SUBMODULE_METADATA);
1177 RECORD(SUBMODULE_DEFINITION);
1178 RECORD(SUBMODULE_UMBRELLA_HEADER);
1179 RECORD(SUBMODULE_HEADER);
1180 RECORD(SUBMODULE_TOPHEADER);
1181 RECORD(SUBMODULE_UMBRELLA_DIR);
1182 RECORD(SUBMODULE_IMPORTS);
1183 RECORD(SUBMODULE_EXPORTS);
1184 RECORD(SUBMODULE_REQUIRES);
1185 RECORD(SUBMODULE_EXCLUDED_HEADER);
1186 RECORD(SUBMODULE_LINK_LIBRARY);
1187 RECORD(SUBMODULE_CONFIG_MACRO);
1188 RECORD(SUBMODULE_CONFLICT);
1189 RECORD(SUBMODULE_PRIVATE_HEADER);
1190 RECORD(SUBMODULE_TEXTUAL_HEADER);
1191 RECORD(SUBMODULE_PRIVATE_TEXTUAL_HEADER);
1192 RECORD(SUBMODULE_INITIALIZERS);
1193 RECORD(SUBMODULE_EXPORT_AS);
1194
1195 // Comments Block.
1196 BLOCK(COMMENTS_BLOCK);
1197 RECORD(COMMENTS_RAW_COMMENT);
1198
1199 // Decls and Types block.
1200 BLOCK(DECLTYPES_BLOCK);
1201 RECORD(TYPE_EXT_QUAL);
1202 RECORD(TYPE_COMPLEX);
1203 RECORD(TYPE_POINTER);
1204 RECORD(TYPE_BLOCK_POINTER);
1205 RECORD(TYPE_LVALUE_REFERENCE);
1206 RECORD(TYPE_RVALUE_REFERENCE);
1207 RECORD(TYPE_MEMBER_POINTER);
1208 RECORD(TYPE_CONSTANT_ARRAY);
1209 RECORD(TYPE_INCOMPLETE_ARRAY);
1210 RECORD(TYPE_VARIABLE_ARRAY);
1211 RECORD(TYPE_VECTOR);
1212 RECORD(TYPE_EXT_VECTOR);
1213 RECORD(TYPE_FUNCTION_NO_PROTO);
1214 RECORD(TYPE_FUNCTION_PROTO);
1215 RECORD(TYPE_TYPEDEF);
1216 RECORD(TYPE_TYPEOF_EXPR);
1217 RECORD(TYPE_TYPEOF);
1218 RECORD(TYPE_RECORD);
1219 RECORD(TYPE_ENUM);
1220 RECORD(TYPE_OBJC_INTERFACE);
1221 RECORD(TYPE_OBJC_OBJECT_POINTER);
1222 RECORD(TYPE_DECLTYPE);
1223 RECORD(TYPE_ELABORATED);
1224 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM);
1225 RECORD(TYPE_UNRESOLVED_USING);
1226 RECORD(TYPE_INJECTED_CLASS_NAME);
1227 RECORD(TYPE_OBJC_OBJECT);
1228 RECORD(TYPE_TEMPLATE_TYPE_PARM);
1229 RECORD(TYPE_TEMPLATE_SPECIALIZATION);
1230 RECORD(TYPE_DEPENDENT_NAME);
1231 RECORD(TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION);
1232 RECORD(TYPE_DEPENDENT_SIZED_ARRAY);
1233 RECORD(TYPE_PAREN);
1234 RECORD(TYPE_MACRO_QUALIFIED);
1235 RECORD(TYPE_PACK_EXPANSION);
1236 RECORD(TYPE_ATTRIBUTED);
1237 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK);
1238 RECORD(TYPE_AUTO);
1239 RECORD(TYPE_UNARY_TRANSFORM);
1240 RECORD(TYPE_ATOMIC);
1241 RECORD(TYPE_DECAYED);
1242 RECORD(TYPE_ADJUSTED);
1243 RECORD(TYPE_OBJC_TYPE_PARAM);
1244 RECORD(LOCAL_REDECLARATIONS);
1245 RECORD(DECL_TYPEDEF);
1246 RECORD(DECL_TYPEALIAS);
1247 RECORD(DECL_ENUM);
1248 RECORD(DECL_RECORD);
1249 RECORD(DECL_ENUM_CONSTANT);
1250 RECORD(DECL_FUNCTION);
1251 RECORD(DECL_OBJC_METHOD);
1252 RECORD(DECL_OBJC_INTERFACE);
1253 RECORD(DECL_OBJC_PROTOCOL);
1254 RECORD(DECL_OBJC_IVAR);
1255 RECORD(DECL_OBJC_AT_DEFS_FIELD);
1256 RECORD(DECL_OBJC_CATEGORY);
1257 RECORD(DECL_OBJC_CATEGORY_IMPL);
1258 RECORD(DECL_OBJC_IMPLEMENTATION);
1259 RECORD(DECL_OBJC_COMPATIBLE_ALIAS);
1260 RECORD(DECL_OBJC_PROPERTY);
1261 RECORD(DECL_OBJC_PROPERTY_IMPL);
1262 RECORD(DECL_FIELD);
1263 RECORD(DECL_MS_PROPERTY);
1264 RECORD(DECL_VAR);
1265 RECORD(DECL_IMPLICIT_PARAM);
1266 RECORD(DECL_PARM_VAR);
1267 RECORD(DECL_FILE_SCOPE_ASM);
1268 RECORD(DECL_BLOCK);
1269 RECORD(DECL_CONTEXT_LEXICAL);
1270 RECORD(DECL_CONTEXT_VISIBLE);
1271 RECORD(DECL_NAMESPACE);
1272 RECORD(DECL_NAMESPACE_ALIAS);
1273 RECORD(DECL_USING);
1274 RECORD(DECL_USING_SHADOW);
1275 RECORD(DECL_USING_DIRECTIVE);
1276 RECORD(DECL_UNRESOLVED_USING_VALUE);
1277 RECORD(DECL_UNRESOLVED_USING_TYPENAME);
1278 RECORD(DECL_LINKAGE_SPEC);
1279 RECORD(DECL_CXX_RECORD);
1280 RECORD(DECL_CXX_METHOD);
1281 RECORD(DECL_CXX_CONSTRUCTOR);
1282 RECORD(DECL_CXX_DESTRUCTOR);
1283 RECORD(DECL_CXX_CONVERSION);
1284 RECORD(DECL_ACCESS_SPEC);
1285 RECORD(DECL_FRIEND);
1286 RECORD(DECL_FRIEND_TEMPLATE);
1287 RECORD(DECL_CLASS_TEMPLATE);
1288 RECORD(DECL_CLASS_TEMPLATE_SPECIALIZATION);
1289 RECORD(DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION);
1290 RECORD(DECL_VAR_TEMPLATE);
1291 RECORD(DECL_VAR_TEMPLATE_SPECIALIZATION);
1292 RECORD(DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION);
1293 RECORD(DECL_FUNCTION_TEMPLATE);
1294 RECORD(DECL_TEMPLATE_TYPE_PARM);
1295 RECORD(DECL_NON_TYPE_TEMPLATE_PARM);
1296 RECORD(DECL_TEMPLATE_TEMPLATE_PARM);
1297 RECORD(DECL_CONCEPT);
1298 RECORD(DECL_TYPE_ALIAS_TEMPLATE);
1299 RECORD(DECL_STATIC_ASSERT);
1300 RECORD(DECL_CXX_BASE_SPECIFIERS);
1301 RECORD(DECL_CXX_CTOR_INITIALIZERS);
1302 RECORD(DECL_INDIRECTFIELD);
1303 RECORD(DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK);
1304 RECORD(DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK);
1305 RECORD(DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION);
1306 RECORD(DECL_IMPORT);
1307 RECORD(DECL_OMP_THREADPRIVATE);
1308 RECORD(DECL_EMPTY);
1309 RECORD(DECL_OBJC_TYPE_PARAM);
1310 RECORD(DECL_OMP_CAPTUREDEXPR);
1311 RECORD(DECL_PRAGMA_COMMENT);
1312 RECORD(DECL_PRAGMA_DETECT_MISMATCH);
1313 RECORD(DECL_OMP_DECLARE_REDUCTION);
1314 RECORD(DECL_OMP_ALLOCATE);
1315
1316 // Statements and Exprs can occur in the Decls and Types block.
1317 AddStmtsExprs(Stream, Record);
1318
1319 BLOCK(PREPROCESSOR_DETAIL_BLOCK);
1320 RECORD(PPD_MACRO_EXPANSION);
1321 RECORD(PPD_MACRO_DEFINITION);
1322 RECORD(PPD_INCLUSION_DIRECTIVE);
1323
1324 // Decls and Types block.
1325 BLOCK(EXTENSION_BLOCK);
1326 RECORD(EXTENSION_METADATA);
1327
1328 BLOCK(UNHASHED_CONTROL_BLOCK);
1329 RECORD(SIGNATURE);
1330 RECORD(DIAGNOSTIC_OPTIONS);
1331 RECORD(DIAG_PRAGMA_MAPPINGS);
1332
1333#undef RECORD
1334#undef BLOCK
1335 Stream.ExitBlock();
1336}
1337
1338/// Prepares a path for being written to an AST file by converting it
1339/// to an absolute path and removing nested './'s.
1340///
1341/// \return \c true if the path was changed.
1342static bool cleanPathForOutput(FileManager &FileMgr,
1343 SmallVectorImpl<char> &Path) {
1344 bool Changed = FileMgr.makeAbsolutePath(Path);
1345 return Changed | llvm::sys::path::remove_dots(Path);
1346}
1347
1348/// Adjusts the given filename to only write out the portion of the
1349/// filename that is not part of the system root directory.
1350///
1351/// \param Filename the file name to adjust.
1352///
1353/// \param BaseDir When non-NULL, the PCH file is a relocatable AST file and
1354/// the returned filename will be adjusted by this root directory.
1355///
1356/// \returns either the original filename (if it needs no adjustment) or the
1357/// adjusted filename (which points into the @p Filename parameter).
1358static const char *
1359adjustFilenameForRelocatableAST(const char *Filename, StringRef BaseDir) {
1360 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1360, __PRETTY_FUNCTION__))
;
1361
1362 if (BaseDir.empty())
1363 return Filename;
1364
1365 // Verify that the filename and the system root have the same prefix.
1366 unsigned Pos = 0;
1367 for (; Filename[Pos] && Pos < BaseDir.size(); ++Pos)
1368 if (Filename[Pos] != BaseDir[Pos])
1369 return Filename; // Prefixes don't match.
1370
1371 // We hit the end of the filename before we hit the end of the system root.
1372 if (!Filename[Pos])
1373 return Filename;
1374
1375 // If there's not a path separator at the end of the base directory nor
1376 // immediately after it, then this isn't within the base directory.
1377 if (!llvm::sys::path::is_separator(Filename[Pos])) {
1378 if (!llvm::sys::path::is_separator(BaseDir.back()))
1379 return Filename;
1380 } else {
1381 // If the file name has a '/' at the current position, skip over the '/'.
1382 // We distinguish relative paths from absolute paths by the
1383 // absence of '/' at the beginning of relative paths.
1384 //
1385 // FIXME: This is wrong. We distinguish them by asking if the path is
1386 // absolute, which isn't the same thing. And there might be multiple '/'s
1387 // in a row. Use a better mechanism to indicate whether we have emitted an
1388 // absolute or relative path.
1389 ++Pos;
1390 }
1391
1392 return Filename + Pos;
1393}
1394
1395ASTFileSignature ASTWriter::createSignature(StringRef Bytes) {
1396 // Calculate the hash till start of UNHASHED_CONTROL_BLOCK.
1397 llvm::SHA1 Hasher;
1398 Hasher.update(ArrayRef<uint8_t>(Bytes.bytes_begin(), Bytes.size()));
1399 auto Hash = Hasher.result();
1400
1401 // Convert to an array [5*i32].
1402 ASTFileSignature Signature;
1403 auto LShift = [&](unsigned char Val, unsigned Shift) {
1404 return (uint32_t)Val << Shift;
1405 };
1406 for (int I = 0; I != 5; ++I)
1407 Signature[I] = LShift(Hash[I * 4 + 0], 24) | LShift(Hash[I * 4 + 1], 16) |
1408 LShift(Hash[I * 4 + 2], 8) | LShift(Hash[I * 4 + 3], 0);
1409
1410 return Signature;
1411}
1412
1413ASTFileSignature ASTWriter::writeUnhashedControlBlock(Preprocessor &PP,
1414 ASTContext &Context) {
1415 // Flush first to prepare the PCM hash (signature).
1416 Stream.FlushToWord();
1417 auto StartOfUnhashedControl = Stream.GetCurrentBitNo() >> 3;
1418
1419 // Enter the block and prepare to write records.
1420 RecordData Record;
1421 Stream.EnterSubblock(UNHASHED_CONTROL_BLOCK_ID, 5);
1422
1423 // For implicit modules, write the hash of the PCM as its signature.
1424 ASTFileSignature Signature;
1425 if (WritingModule &&
1426 PP.getHeaderSearchInfo().getHeaderSearchOpts().ModulesHashContent) {
1427 Signature = createSignature(StringRef(Buffer.begin(), StartOfUnhashedControl));
1428 Record.append(Signature.begin(), Signature.end());
1429 Stream.EmitRecord(SIGNATURE, Record);
1430 Record.clear();
1431 }
1432
1433 // Diagnostic options.
1434 const auto &Diags = Context.getDiagnostics();
1435 const DiagnosticOptions &DiagOpts = Diags.getDiagnosticOptions();
1436#define DIAGOPT(Name, Bits, Default) Record.push_back(DiagOpts.Name);
1437#define ENUM_DIAGOPT(Name, Type, Bits, Default) \
1438 Record.push_back(static_cast<unsigned>(DiagOpts.get##Name()));
1439#include "clang/Basic/DiagnosticOptions.def"
1440 Record.push_back(DiagOpts.Warnings.size());
1441 for (unsigned I = 0, N = DiagOpts.Warnings.size(); I != N; ++I)
1442 AddString(DiagOpts.Warnings[I], Record);
1443 Record.push_back(DiagOpts.Remarks.size());
1444 for (unsigned I = 0, N = DiagOpts.Remarks.size(); I != N; ++I)
1445 AddString(DiagOpts.Remarks[I], Record);
1446 // Note: we don't serialize the log or serialization file names, because they
1447 // are generally transient files and will almost always be overridden.
1448 Stream.EmitRecord(DIAGNOSTIC_OPTIONS, Record);
1449
1450 // Write out the diagnostic/pragma mappings.
1451 WritePragmaDiagnosticMappings(Diags, /* isModule = */ WritingModule);
1452
1453 // Leave the options block.
1454 Stream.ExitBlock();
1455 return Signature;
1456}
1457
1458/// Write the control block.
1459void ASTWriter::WriteControlBlock(Preprocessor &PP, ASTContext &Context,
1460 StringRef isysroot,
1461 const std::string &OutputFile) {
1462 using namespace llvm;
1463
1464 Stream.EnterSubblock(CONTROL_BLOCK_ID, 5);
1465 RecordData Record;
1466
1467 // Metadata
1468 auto MetadataAbbrev = std::make_shared<BitCodeAbbrev>();
1469 MetadataAbbrev->Add(BitCodeAbbrevOp(METADATA));
1470 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Major
1471 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Minor
1472 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang maj.
1473 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang min.
1474 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Relocatable
1475 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Timestamps
1476 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // PCHHasObjectFile
1477 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Errors
1478 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // SVN branch/tag
1479 unsigned MetadataAbbrevCode = Stream.EmitAbbrev(std::move(MetadataAbbrev));
1480 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1481, __PRETTY_FUNCTION__))
1481 "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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1481, __PRETTY_FUNCTION__))
;
1482 {
1483 RecordData::value_type Record[] = {
1484 METADATA,
1485 VERSION_MAJOR,
1486 VERSION_MINOR,
1487 CLANG_VERSION_MAJOR10,
1488 CLANG_VERSION_MINOR0,
1489 !isysroot.empty(),
1490 IncludeTimestamps,
1491 Context.getLangOpts().BuildingPCHWithObjectFile,
1492 ASTHasCompilerErrors};
1493 Stream.EmitRecordWithBlob(MetadataAbbrevCode, Record,
1494 getClangFullRepositoryVersion());
1495 }
1496
1497 if (WritingModule) {
1498 // Module name
1499 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1500 Abbrev->Add(BitCodeAbbrevOp(MODULE_NAME));
1501 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
1502 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1503 RecordData::value_type Record[] = {MODULE_NAME};
1504 Stream.EmitRecordWithBlob(AbbrevCode, Record, WritingModule->Name);
1505 }
1506
1507 if (WritingModule && WritingModule->Directory) {
1508 SmallString<128> BaseDir(WritingModule->Directory->getName());
1509 cleanPathForOutput(Context.getSourceManager().getFileManager(), BaseDir);
1510
1511 // If the home of the module is the current working directory, then we
1512 // want to pick up the cwd of the build process loading the module, not
1513 // our cwd, when we load this module.
1514 if (!PP.getHeaderSearchInfo()
1515 .getHeaderSearchOpts()
1516 .ModuleMapFileHomeIsCwd ||
1517 WritingModule->Directory->getName() != StringRef(".")) {
1518 // Module directory.
1519 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1520 Abbrev->Add(BitCodeAbbrevOp(MODULE_DIRECTORY));
1521 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Directory
1522 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1523
1524 RecordData::value_type Record[] = {MODULE_DIRECTORY};
1525 Stream.EmitRecordWithBlob(AbbrevCode, Record, BaseDir);
1526 }
1527
1528 // Write out all other paths relative to the base directory if possible.
1529 BaseDirectory.assign(BaseDir.begin(), BaseDir.end());
1530 } else if (!isysroot.empty()) {
1531 // Write out paths relative to the sysroot if possible.
1532 BaseDirectory = isysroot;
1533 }
1534
1535 // Module map file
1536 if (WritingModule && WritingModule->Kind == Module::ModuleMapModule) {
1537 Record.clear();
1538
1539 auto &Map = PP.getHeaderSearchInfo().getModuleMap();
1540 AddPath(WritingModule->PresumedModuleMapFile.empty()
1541 ? Map.getModuleMapFileForUniquing(WritingModule)->getName()
1542 : StringRef(WritingModule->PresumedModuleMapFile),
1543 Record);
1544
1545 // Additional module map files.
1546 if (auto *AdditionalModMaps =
1547 Map.getAdditionalModuleMapFiles(WritingModule)) {
1548 Record.push_back(AdditionalModMaps->size());
1549 for (const FileEntry *F : *AdditionalModMaps)
1550 AddPath(F->getName(), Record);
1551 } else {
1552 Record.push_back(0);
1553 }
1554
1555 Stream.EmitRecord(MODULE_MAP_FILE, Record);
1556 }
1557
1558 // Imports
1559 if (Chain) {
1560 serialization::ModuleManager &Mgr = Chain->getModuleManager();
1561 Record.clear();
1562
1563 for (ModuleFile &M : Mgr) {
1564 // Skip modules that weren't directly imported.
1565 if (!M.isDirectlyImported())
1566 continue;
1567
1568 Record.push_back((unsigned)M.Kind); // FIXME: Stable encoding
1569 AddSourceLocation(M.ImportLoc, Record);
1570
1571 // If we have calculated signature, there is no need to store
1572 // the size or timestamp.
1573 Record.push_back(M.Signature ? 0 : M.File->getSize());
1574 Record.push_back(M.Signature ? 0 : getTimestampForOutput(M.File));
1575
1576 for (auto I : M.Signature)
1577 Record.push_back(I);
1578
1579 AddString(M.ModuleName, Record);
1580 AddPath(M.FileName, Record);
1581 }
1582 Stream.EmitRecord(IMPORTS, Record);
1583 }
1584
1585 // Write the options block.
1586 Stream.EnterSubblock(OPTIONS_BLOCK_ID, 4);
1587
1588 // Language options.
1589 Record.clear();
1590 const LangOptions &LangOpts = Context.getLangOpts();
1591#define LANGOPT(Name, Bits, Default, Description) \
1592 Record.push_back(LangOpts.Name);
1593#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1594 Record.push_back(static_cast<unsigned>(LangOpts.get##Name()));
1595#include "clang/Basic/LangOptions.def"
1596#define SANITIZER(NAME, ID) \
1597 Record.push_back(LangOpts.Sanitize.has(SanitizerKind::ID));
1598#include "clang/Basic/Sanitizers.def"
1599
1600 Record.push_back(LangOpts.ModuleFeatures.size());
1601 for (StringRef Feature : LangOpts.ModuleFeatures)
1602 AddString(Feature, Record);
1603
1604 Record.push_back((unsigned) LangOpts.ObjCRuntime.getKind());
1605 AddVersionTuple(LangOpts.ObjCRuntime.getVersion(), Record);
1606
1607 AddString(LangOpts.CurrentModule, Record);
1608
1609 // Comment options.
1610 Record.push_back(LangOpts.CommentOpts.BlockCommandNames.size());
1611 for (const auto &I : LangOpts.CommentOpts.BlockCommandNames) {
1612 AddString(I, Record);
1613 }
1614 Record.push_back(LangOpts.CommentOpts.ParseAllComments);
1615
1616 // OpenMP offloading options.
1617 Record.push_back(LangOpts.OMPTargetTriples.size());
1618 for (auto &T : LangOpts.OMPTargetTriples)
1619 AddString(T.getTriple(), Record);
1620
1621 AddString(LangOpts.OMPHostIRFile, Record);
1622
1623 Stream.EmitRecord(LANGUAGE_OPTIONS, Record);
1624
1625 // Target options.
1626 Record.clear();
1627 const TargetInfo &Target = Context.getTargetInfo();
1628 const TargetOptions &TargetOpts = Target.getTargetOpts();
1629 AddString(TargetOpts.Triple, Record);
1630 AddString(TargetOpts.CPU, Record);
1631 AddString(TargetOpts.ABI, Record);
1632 Record.push_back(TargetOpts.FeaturesAsWritten.size());
1633 for (unsigned I = 0, N = TargetOpts.FeaturesAsWritten.size(); I != N; ++I) {
1634 AddString(TargetOpts.FeaturesAsWritten[I], Record);
1635 }
1636 Record.push_back(TargetOpts.Features.size());
1637 for (unsigned I = 0, N = TargetOpts.Features.size(); I != N; ++I) {
1638 AddString(TargetOpts.Features[I], Record);
1639 }
1640 Stream.EmitRecord(TARGET_OPTIONS, Record);
1641
1642 // File system options.
1643 Record.clear();
1644 const FileSystemOptions &FSOpts =
1645 Context.getSourceManager().getFileManager().getFileSystemOpts();
1646 AddString(FSOpts.WorkingDir, Record);
1647 Stream.EmitRecord(FILE_SYSTEM_OPTIONS, Record);
1648
1649 // Header search options.
1650 Record.clear();
1651 const HeaderSearchOptions &HSOpts
1652 = PP.getHeaderSearchInfo().getHeaderSearchOpts();
1653 AddString(HSOpts.Sysroot, Record);
1654
1655 // Include entries.
1656 Record.push_back(HSOpts.UserEntries.size());
1657 for (unsigned I = 0, N = HSOpts.UserEntries.size(); I != N; ++I) {
1658 const HeaderSearchOptions::Entry &Entry = HSOpts.UserEntries[I];
1659 AddString(Entry.Path, Record);
1660 Record.push_back(static_cast<unsigned>(Entry.Group));
1661 Record.push_back(Entry.IsFramework);
1662 Record.push_back(Entry.IgnoreSysRoot);
1663 }
1664
1665 // System header prefixes.
1666 Record.push_back(HSOpts.SystemHeaderPrefixes.size());
1667 for (unsigned I = 0, N = HSOpts.SystemHeaderPrefixes.size(); I != N; ++I) {
1668 AddString(HSOpts.SystemHeaderPrefixes[I].Prefix, Record);
1669 Record.push_back(HSOpts.SystemHeaderPrefixes[I].IsSystemHeader);
1670 }
1671
1672 AddString(HSOpts.ResourceDir, Record);
1673 AddString(HSOpts.ModuleCachePath, Record);
1674 AddString(HSOpts.ModuleUserBuildPath, Record);
1675 Record.push_back(HSOpts.DisableModuleHash);
1676 Record.push_back(HSOpts.ImplicitModuleMaps);
1677 Record.push_back(HSOpts.ModuleMapFileHomeIsCwd);
1678 Record.push_back(HSOpts.UseBuiltinIncludes);
1679 Record.push_back(HSOpts.UseStandardSystemIncludes);
1680 Record.push_back(HSOpts.UseStandardCXXIncludes);
1681 Record.push_back(HSOpts.UseLibcxx);
1682 // Write out the specific module cache path that contains the module files.
1683 AddString(PP.getHeaderSearchInfo().getModuleCachePath(), Record);
1684 Stream.EmitRecord(HEADER_SEARCH_OPTIONS, Record);
1685
1686 // Preprocessor options.
1687 Record.clear();
1688 const PreprocessorOptions &PPOpts = PP.getPreprocessorOpts();
1689
1690 // Macro definitions.
1691 Record.push_back(PPOpts.Macros.size());
1692 for (unsigned I = 0, N = PPOpts.Macros.size(); I != N; ++I) {
1693 AddString(PPOpts.Macros[I].first, Record);
1694 Record.push_back(PPOpts.Macros[I].second);
1695 }
1696
1697 // Includes
1698 Record.push_back(PPOpts.Includes.size());
1699 for (unsigned I = 0, N = PPOpts.Includes.size(); I != N; ++I)
1700 AddString(PPOpts.Includes[I], Record);
1701
1702 // Macro includes
1703 Record.push_back(PPOpts.MacroIncludes.size());
1704 for (unsigned I = 0, N = PPOpts.MacroIncludes.size(); I != N; ++I)
1705 AddString(PPOpts.MacroIncludes[I], Record);
1706
1707 Record.push_back(PPOpts.UsePredefines);
1708 // Detailed record is important since it is used for the module cache hash.
1709 Record.push_back(PPOpts.DetailedRecord);
1710 AddString(PPOpts.ImplicitPCHInclude, Record);
1711 Record.push_back(static_cast<unsigned>(PPOpts.ObjCXXARCStandardLibrary));
1712 Stream.EmitRecord(PREPROCESSOR_OPTIONS, Record);
1713
1714 // Leave the options block.
1715 Stream.ExitBlock();
1716
1717 // Original file name and file ID
1718 SourceManager &SM = Context.getSourceManager();
1719 if (const FileEntry *MainFile = SM.getFileEntryForID(SM.getMainFileID())) {
1720 auto FileAbbrev = std::make_shared<BitCodeAbbrev>();
1721 FileAbbrev->Add(BitCodeAbbrevOp(ORIGINAL_FILE));
1722 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // File ID
1723 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1724 unsigned FileAbbrevCode = Stream.EmitAbbrev(std::move(FileAbbrev));
1725
1726 Record.clear();
1727 Record.push_back(ORIGINAL_FILE);
1728 Record.push_back(SM.getMainFileID().getOpaqueValue());
1729 EmitRecordWithPath(FileAbbrevCode, Record, MainFile->getName());
1730 }
1731
1732 Record.clear();
1733 Record.push_back(SM.getMainFileID().getOpaqueValue());
1734 Stream.EmitRecord(ORIGINAL_FILE_ID, Record);
1735
1736 // Original PCH directory
1737 if (!OutputFile.empty() && OutputFile != "-") {
1738 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1739 Abbrev->Add(BitCodeAbbrevOp(ORIGINAL_PCH_DIR));
1740 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1741 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1742
1743 SmallString<128> OutputPath(OutputFile);
1744
1745 SM.getFileManager().makeAbsolutePath(OutputPath);
1746 StringRef origDir = llvm::sys::path::parent_path(OutputPath);
1747
1748 RecordData::value_type Record[] = {ORIGINAL_PCH_DIR};
1749 Stream.EmitRecordWithBlob(AbbrevCode, Record, origDir);
1750 }
1751
1752 WriteInputFiles(Context.SourceMgr,
1753 PP.getHeaderSearchInfo().getHeaderSearchOpts(),
1754 PP.getLangOpts().Modules);
1755 Stream.ExitBlock();
1756}
1757
1758namespace {
1759
1760/// An input file.
1761struct InputFileEntry {
1762 const FileEntry *File;
1763 bool IsSystemFile;
1764 bool IsTransient;
1765 bool BufferOverridden;
1766 bool IsTopLevelModuleMap;
1767};
1768
1769} // namespace
1770
1771void ASTWriter::WriteInputFiles(SourceManager &SourceMgr,
1772 HeaderSearchOptions &HSOpts,
1773 bool Modules) {
1774 using namespace llvm;
1775
1776 Stream.EnterSubblock(INPUT_FILES_BLOCK_ID, 4);
1777
1778 // Create input-file abbreviation.
1779 auto IFAbbrev = std::make_shared<BitCodeAbbrev>();
1780 IFAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE));
1781 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
1782 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 12)); // Size
1783 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // Modification time
1784 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Overridden
1785 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Transient
1786 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Module map
1787 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1788 unsigned IFAbbrevCode = Stream.EmitAbbrev(std::move(IFAbbrev));
1789
1790 // Get all ContentCache objects for files, sorted by whether the file is a
1791 // system one or not. System files go at the back, users files at the front.
1792 std::deque<InputFileEntry> SortedFiles;
1793 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size(); I != N; ++I) {
1794 // Get this source location entry.
1795 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
1796 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1796, __PRETTY_FUNCTION__))
;
1797
1798 // We only care about file entries that were not overridden.
1799 if (!SLoc->isFile())
1800 continue;
1801 const SrcMgr::FileInfo &File = SLoc->getFile();
1802 const SrcMgr::ContentCache *Cache = File.getContentCache();
1803 if (!Cache->OrigEntry)
1804 continue;
1805
1806 InputFileEntry Entry;
1807 Entry.File = Cache->OrigEntry;
1808 Entry.IsSystemFile = isSystem(File.getFileCharacteristic());
1809 Entry.IsTransient = Cache->IsTransient;
1810 Entry.BufferOverridden = Cache->BufferOverridden;
1811 Entry.IsTopLevelModuleMap = isModuleMap(File.getFileCharacteristic()) &&
1812 File.getIncludeLoc().isInvalid();
1813 if (Entry.IsSystemFile)
1814 SortedFiles.push_back(Entry);
1815 else
1816 SortedFiles.push_front(Entry);
1817 }
1818
1819 unsigned UserFilesNum = 0;
1820 // Write out all of the input files.
1821 std::vector<uint64_t> InputFileOffsets;
1822 for (const auto &Entry : SortedFiles) {
1823 uint32_t &InputFileID = InputFileIDs[Entry.File];
1824 if (InputFileID != 0)
1825 continue; // already recorded this file.
1826
1827 // Record this entry's offset.
1828 InputFileOffsets.push_back(Stream.GetCurrentBitNo());
1829
1830 InputFileID = InputFileOffsets.size();
1831
1832 if (!Entry.IsSystemFile)
1833 ++UserFilesNum;
1834
1835 // Emit size/modification time for this file.
1836 // And whether this file was overridden.
1837 RecordData::value_type Record[] = {
1838 INPUT_FILE,
1839 InputFileOffsets.size(),
1840 (uint64_t)Entry.File->getSize(),
1841 (uint64_t)getTimestampForOutput(Entry.File),
1842 Entry.BufferOverridden,
1843 Entry.IsTransient,
1844 Entry.IsTopLevelModuleMap};
1845
1846 // FIXME: The path should be taken from the FileEntryRef.
1847 EmitRecordWithPath(IFAbbrevCode, Record, Entry.File->getName());
1848 }
1849
1850 Stream.ExitBlock();
1851
1852 // Create input file offsets abbreviation.
1853 auto OffsetsAbbrev = std::make_shared<BitCodeAbbrev>();
1854 OffsetsAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE_OFFSETS));
1855 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # input files
1856 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # non-system
1857 // input files
1858 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Array
1859 unsigned OffsetsAbbrevCode = Stream.EmitAbbrev(std::move(OffsetsAbbrev));
1860
1861 // Write input file offsets.
1862 RecordData::value_type Record[] = {INPUT_FILE_OFFSETS,
1863 InputFileOffsets.size(), UserFilesNum};
1864 Stream.EmitRecordWithBlob(OffsetsAbbrevCode, Record, bytes(InputFileOffsets));
1865}
1866
1867//===----------------------------------------------------------------------===//
1868// Source Manager Serialization
1869//===----------------------------------------------------------------------===//
1870
1871/// Create an abbreviation for the SLocEntry that refers to a
1872/// file.
1873static unsigned CreateSLocFileAbbrev(llvm::BitstreamWriter &Stream) {
1874 using namespace llvm;
1875
1876 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1877 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_FILE_ENTRY));
1878 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1879 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1880 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1881 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1882 // FileEntry fields.
1883 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Input File ID
1884 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumCreatedFIDs
1885 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 24)); // FirstDeclIndex
1886 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumDecls
1887 return Stream.EmitAbbrev(std::move(Abbrev));
1888}
1889
1890/// Create an abbreviation for the SLocEntry that refers to a
1891/// buffer.
1892static unsigned CreateSLocBufferAbbrev(llvm::BitstreamWriter &Stream) {
1893 using namespace llvm;
1894
1895 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1896 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_BUFFER_ENTRY));
1897 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1898 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1899 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1900 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1901 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Buffer name blob
1902 return Stream.EmitAbbrev(std::move(Abbrev));
1903}
1904
1905/// Create an abbreviation for the SLocEntry that refers to a
1906/// buffer's blob.
1907static unsigned CreateSLocBufferBlobAbbrev(llvm::BitstreamWriter &Stream,
1908 bool Compressed) {
1909 using namespace llvm;
1910
1911 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1912 Abbrev->Add(BitCodeAbbrevOp(Compressed ? SM_SLOC_BUFFER_BLOB_COMPRESSED
1913 : SM_SLOC_BUFFER_BLOB));
1914 if (Compressed)
1915 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Uncompressed size
1916 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Blob
1917 return Stream.EmitAbbrev(std::move(Abbrev));
1918}
1919
1920/// Create an abbreviation for the SLocEntry that refers to a macro
1921/// expansion.
1922static unsigned CreateSLocExpansionAbbrev(llvm::BitstreamWriter &Stream) {
1923 using namespace llvm;
1924
1925 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1926 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_EXPANSION_ENTRY));
1927 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1928 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Spelling location
1929 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Start location
1930 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // End location
1931 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Is token range
1932 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Token length
1933 return Stream.EmitAbbrev(std::move(Abbrev));
1934}
1935
1936namespace {
1937
1938 // Trait used for the on-disk hash table of header search information.
1939 class HeaderFileInfoTrait {
1940 ASTWriter &Writer;
1941
1942 // Keep track of the framework names we've used during serialization.
1943 SmallVector<char, 128> FrameworkStringData;
1944 llvm::StringMap<unsigned> FrameworkNameOffset;
1945
1946 public:
1947 HeaderFileInfoTrait(ASTWriter &Writer) : Writer(Writer) {}
1948
1949 struct key_type {
1950 StringRef Filename;
1951 off_t Size;
1952 time_t ModTime;
1953 };
1954 using key_type_ref = const key_type &;
1955
1956 using UnresolvedModule =
1957 llvm::PointerIntPair<Module *, 2, ModuleMap::ModuleHeaderRole>;
1958
1959 struct data_type {
1960 const HeaderFileInfo &HFI;
1961 ArrayRef<ModuleMap::KnownHeader> KnownHeaders;
1962 UnresolvedModule Unresolved;
1963 };
1964 using data_type_ref = const data_type &;
1965
1966 using hash_value_type = unsigned;
1967 using offset_type = unsigned;
1968
1969 hash_value_type ComputeHash(key_type_ref key) {
1970 // The hash is based only on size/time of the file, so that the reader can
1971 // match even when symlinking or excess path elements ("foo/../", "../")
1972 // change the form of the name. However, complete path is still the key.
1973 return llvm::hash_combine(key.Size, key.ModTime);
1974 }
1975
1976 std::pair<unsigned, unsigned>
1977 EmitKeyDataLength(raw_ostream& Out, key_type_ref key, data_type_ref Data) {
1978 using namespace llvm::support;
1979
1980 endian::Writer LE(Out, little);
1981 unsigned KeyLen = key.Filename.size() + 1 + 8 + 8;
1982 LE.write<uint16_t>(KeyLen);
1983 unsigned DataLen = 1 + 2 + 4 + 4;
1984 for (auto ModInfo : Data.KnownHeaders)
1985 if (Writer.getLocalOrImportedSubmoduleID(ModInfo.getModule()))
1986 DataLen += 4;
1987 if (Data.Unresolved.getPointer())
1988 DataLen += 4;
1989 LE.write<uint8_t>(DataLen);
1990 return std::make_pair(KeyLen, DataLen);
1991 }
1992
1993 void EmitKey(raw_ostream& Out, key_type_ref key, unsigned KeyLen) {
1994 using namespace llvm::support;
1995
1996 endian::Writer LE(Out, little);
1997 LE.write<uint64_t>(key.Size);
1998 KeyLen -= 8;
1999 LE.write<uint64_t>(key.ModTime);
2000 KeyLen -= 8;
2001 Out.write(key.Filename.data(), KeyLen);
2002 }
2003
2004 void EmitData(raw_ostream &Out, key_type_ref key,
2005 data_type_ref Data, unsigned DataLen) {
2006 using namespace llvm::support;
2007
2008 endian::Writer LE(Out, little);
2009 uint64_t Start = Out.tell(); (void)Start;
2010
2011 unsigned char Flags = (Data.HFI.isImport << 5)
2012 | (Data.HFI.isPragmaOnce << 4)
2013 | (Data.HFI.DirInfo << 1)
2014 | Data.HFI.IndexHeaderMapHeader;
2015 LE.write<uint8_t>(Flags);
2016 LE.write<uint16_t>(Data.HFI.NumIncludes);
2017
2018 if (!Data.HFI.ControllingMacro)
2019 LE.write<uint32_t>(Data.HFI.ControllingMacroID);
2020 else
2021 LE.write<uint32_t>(Writer.getIdentifierRef(Data.HFI.ControllingMacro));
2022
2023 unsigned Offset = 0;
2024 if (!Data.HFI.Framework.empty()) {
2025 // If this header refers into a framework, save the framework name.
2026 llvm::StringMap<unsigned>::iterator Pos
2027 = FrameworkNameOffset.find(Data.HFI.Framework);
2028 if (Pos == FrameworkNameOffset.end()) {
2029 Offset = FrameworkStringData.size() + 1;
2030 FrameworkStringData.append(Data.HFI.Framework.begin(),
2031 Data.HFI.Framework.end());
2032 FrameworkStringData.push_back(0);
2033
2034 FrameworkNameOffset[Data.HFI.Framework] = Offset;
2035 } else
2036 Offset = Pos->second;
2037 }
2038 LE.write<uint32_t>(Offset);
2039
2040 auto EmitModule = [&](Module *M, ModuleMap::ModuleHeaderRole Role) {
2041 if (uint32_t ModID = Writer.getLocalOrImportedSubmoduleID(M)) {
2042 uint32_t Value = (ModID << 2) | (unsigned)Role;
2043 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2043, __PRETTY_FUNCTION__))
;
2044 LE.write<uint32_t>(Value);
2045 }
2046 };
2047
2048 // FIXME: If the header is excluded, we should write out some
2049 // record of that fact.
2050 for (auto ModInfo : Data.KnownHeaders)
2051 EmitModule(ModInfo.getModule(), ModInfo.getRole());
2052 if (Data.Unresolved.getPointer())
2053 EmitModule(Data.Unresolved.getPointer(), Data.Unresolved.getInt());
2054
2055 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2055, __PRETTY_FUNCTION__))
;
2056 }
2057
2058 const char *strings_begin() const { return FrameworkStringData.begin(); }
2059 const char *strings_end() const { return FrameworkStringData.end(); }
2060 };
2061
2062} // namespace
2063
2064/// Write the header search block for the list of files that
2065///
2066/// \param HS The header search structure to save.
2067void ASTWriter::WriteHeaderSearch(const HeaderSearch &HS) {
2068 HeaderFileInfoTrait GeneratorTrait(*this);
2069 llvm::OnDiskChainedHashTableGenerator<HeaderFileInfoTrait> Generator;
2070 SmallVector<const char *, 4> SavedStrings;
2071 unsigned NumHeaderSearchEntries = 0;
2072
2073 // Find all unresolved headers for the current module. We generally will
2074 // have resolved them before we get here, but not necessarily: we might be
2075 // compiling a preprocessed module, where there is no requirement for the
2076 // original files to exist any more.
2077 const HeaderFileInfo Empty; // So we can take a reference.
2078 if (WritingModule) {
1
Assuming field 'WritingModule' is non-null
2
Taking true branch
2079 llvm::SmallVector<Module *, 16> Worklist(1, WritingModule);
2080 while (!Worklist.empty()) {
3
Loop condition is true. Entering loop body
2081 Module *M = Worklist.pop_back_val();
2082 if (!M->isAvailable())
4
Assuming the condition is false
5
Taking false branch
2083 continue;
2084
2085 // Map to disk files where possible, to pick up any missing stat
2086 // information. This also means we don't need to check the unresolved
2087 // headers list when emitting resolved headers in the first loop below.
2088 // FIXME: It'd be preferable to avoid doing this if we were given
2089 // sufficient stat information in the module map.
2090 HS.getModuleMap().resolveHeaderDirectives(M);
2091
2092 // If the file didn't exist, we can still create a module if we were given
2093 // enough information in the module map.
2094 for (auto U : M->MissingHeaders) {
6
Assuming '__begin3' is not equal to '__end3'
2095 // Check that we were given enough information to build a module
2096 // without this file existing on disk.
2097 if (!U.Size || (!U.ModTime && IncludeTimestamps)) {
7
Assuming the condition is false
8
Assuming the condition is false
2098 PP->Diag(U.FileNameLoc, diag::err_module_no_size_mtime_for_header)
2099 << WritingModule->getFullModuleName() << U.Size.hasValue()
2100 << U.FileName;
2101 continue;
2102 }
2103
2104 // Form the effective relative pathname for the file.
2105 SmallString<128> Filename(M->Directory->getName());
2106 llvm::sys::path::append(Filename, U.FileName);
2107 PreparePathForOutput(Filename);
2108
2109 StringRef FilenameDup = strdup(Filename.c_str());
9
Memory is allocated
10
Potential memory leak
2110 SavedStrings.push_back(FilenameDup.data());
2111
2112 HeaderFileInfoTrait::key_type Key = {
2113 FilenameDup, *U.Size, IncludeTimestamps ? *U.ModTime : 0
2114 };
2115 HeaderFileInfoTrait::data_type Data = {
2116 Empty, {}, {M, ModuleMap::headerKindToRole(U.Kind)}
2117 };
2118 // FIXME: Deal with cases where there are multiple unresolved header
2119 // directives in different submodules for the same header.
2120 Generator.insert(Key, Data, GeneratorTrait);
2121 ++NumHeaderSearchEntries;
2122 }
2123
2124 Worklist.append(M->submodule_begin(), M->submodule_end());
2125 }
2126 }
2127
2128 SmallVector<const FileEntry *, 16> FilesByUID;
2129 HS.getFileMgr().GetUniqueIDMapping(FilesByUID);
2130
2131 if (FilesByUID.size() > HS.header_file_size())
2132 FilesByUID.resize(HS.header_file_size());
2133
2134 for (unsigned UID = 0, LastUID = FilesByUID.size(); UID != LastUID; ++UID) {
2135 const FileEntry *File = FilesByUID[UID];
2136 if (!File)
2137 continue;
2138
2139 // Get the file info. This will load info from the external source if
2140 // necessary. Skip emitting this file if we have no information on it
2141 // as a header file (in which case HFI will be null) or if it hasn't
2142 // changed since it was loaded. Also skip it if it's for a modular header
2143 // from a different module; in that case, we rely on the module(s)
2144 // containing the header to provide this information.
2145 const HeaderFileInfo *HFI =
2146 HS.getExistingFileInfo(File, /*WantExternal*/!Chain);
2147 if (!HFI || (HFI->isModuleHeader && !HFI->isCompilingModuleHeader))
2148 continue;
2149
2150 // Massage the file path into an appropriate form.
2151 StringRef Filename = File->getName();
2152 SmallString<128> FilenameTmp(Filename);
2153 if (PreparePathForOutput(FilenameTmp)) {
2154 // If we performed any translation on the file name at all, we need to
2155 // save this string, since the generator will refer to it later.
2156 Filename = StringRef(strdup(FilenameTmp.c_str()));
2157 SavedStrings.push_back(Filename.data());
2158 }
2159
2160 HeaderFileInfoTrait::key_type Key = {
2161 Filename, File->getSize(), getTimestampForOutput(File)
2162 };
2163 HeaderFileInfoTrait::data_type Data = {
2164 *HFI, HS.getModuleMap().findAllModulesForHeader(File), {}
2165 };
2166 Generator.insert(Key, Data, GeneratorTrait);
2167 ++NumHeaderSearchEntries;
2168 }
2169
2170 // Create the on-disk hash table in a buffer.
2171 SmallString<4096> TableData;
2172 uint32_t BucketOffset;
2173 {
2174 using namespace llvm::support;
2175
2176 llvm::raw_svector_ostream Out(TableData);
2177 // Make sure that no bucket is at offset 0
2178 endian::write<uint32_t>(Out, 0, little);
2179 BucketOffset = Generator.Emit(Out, GeneratorTrait);
2180 }
2181
2182 // Create a blob abbreviation
2183 using namespace llvm;
2184
2185 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2186 Abbrev->Add(BitCodeAbbrevOp(HEADER_SEARCH_TABLE));
2187 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2188 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2189 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2190 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2191 unsigned TableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2192
2193 // Write the header search table
2194 RecordData::value_type Record[] = {HEADER_SEARCH_TABLE, BucketOffset,
2195 NumHeaderSearchEntries, TableData.size()};
2196 TableData.append(GeneratorTrait.strings_begin(),GeneratorTrait.strings_end());
2197 Stream.EmitRecordWithBlob(TableAbbrev, Record, TableData);
2198
2199 // Free all of the strings we had to duplicate.
2200 for (unsigned I = 0, N = SavedStrings.size(); I != N; ++I)
2201 free(const_cast<char *>(SavedStrings[I]));
2202}
2203
2204static void emitBlob(llvm::BitstreamWriter &Stream, StringRef Blob,
2205 unsigned SLocBufferBlobCompressedAbbrv,
2206 unsigned SLocBufferBlobAbbrv) {
2207 using RecordDataType = ASTWriter::RecordData::value_type;
2208
2209 // Compress the buffer if possible. We expect that almost all PCM
2210 // consumers will not want its contents.
2211 SmallString<0> CompressedBuffer;
2212 if (llvm::zlib::isAvailable()) {
2213 llvm::Error E = llvm::zlib::compress(Blob.drop_back(1), CompressedBuffer);
2214 if (!E) {
2215 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB_COMPRESSED,
2216 Blob.size() - 1};
2217 Stream.EmitRecordWithBlob(SLocBufferBlobCompressedAbbrv, Record,
2218 CompressedBuffer);
2219 return;
2220 }
2221 llvm::consumeError(std::move(E));
2222 }
2223
2224 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB};
2225 Stream.EmitRecordWithBlob(SLocBufferBlobAbbrv, Record, Blob);
2226}
2227
2228/// Writes the block containing the serialized form of the
2229/// source manager.
2230///
2231/// TODO: We should probably use an on-disk hash table (stored in a
2232/// blob), indexed based on the file name, so that we only create
2233/// entries for files that we actually need. In the common case (no
2234/// errors), we probably won't have to create file entries for any of
2235/// the files in the AST.
2236void ASTWriter::WriteSourceManagerBlock(SourceManager &SourceMgr,
2237 const Preprocessor &PP) {
2238 RecordData Record;
2239
2240 // Enter the source manager block.
2241 Stream.EnterSubblock(SOURCE_MANAGER_BLOCK_ID, 4);
2242
2243 // Abbreviations for the various kinds of source-location entries.
2244 unsigned SLocFileAbbrv = CreateSLocFileAbbrev(Stream);
2245 unsigned SLocBufferAbbrv = CreateSLocBufferAbbrev(Stream);
2246 unsigned SLocBufferBlobAbbrv = CreateSLocBufferBlobAbbrev(Stream, false);
2247 unsigned SLocBufferBlobCompressedAbbrv =
2248 CreateSLocBufferBlobAbbrev(Stream, true);
2249 unsigned SLocExpansionAbbrv = CreateSLocExpansionAbbrev(Stream);
2250
2251 // Write out the source location entry table. We skip the first
2252 // entry, which is always the same dummy entry.
2253 std::vector<uint32_t> SLocEntryOffsets;
2254 RecordData PreloadSLocs;
2255 SLocEntryOffsets.reserve(SourceMgr.local_sloc_entry_size() - 1);
2256 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size();
2257 I != N; ++I) {
2258 // Get this source location entry.
2259 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
2260 FileID FID = FileID::get(I);
2261 assert(&SourceMgr.getSLocEntry(FID) == SLoc)((&SourceMgr.getSLocEntry(FID) == SLoc) ? static_cast<
void> (0) : __assert_fail ("&SourceMgr.getSLocEntry(FID) == SLoc"
, "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2261, __PRETTY_FUNCTION__))
;
2262
2263 // Record the offset of this source-location entry.
2264 SLocEntryOffsets.push_back(Stream.GetCurrentBitNo());
2265
2266 // Figure out which record code to use.
2267 unsigned Code;
2268 if (SLoc->isFile()) {
2269 const SrcMgr::ContentCache *Cache = SLoc->getFile().getContentCache();
2270 if (Cache->OrigEntry) {
2271 Code = SM_SLOC_FILE_ENTRY;
2272 } else
2273 Code = SM_SLOC_BUFFER_ENTRY;
2274 } else
2275 Code = SM_SLOC_EXPANSION_ENTRY;
2276 Record.clear();
2277 Record.push_back(Code);
2278
2279 // Starting offset of this entry within this module, so skip the dummy.
2280 Record.push_back(SLoc->getOffset() - 2);
2281 if (SLoc->isFile()) {
2282 const SrcMgr::FileInfo &File = SLoc->getFile();
2283 AddSourceLocation(File.getIncludeLoc(), Record);
2284 Record.push_back(File.getFileCharacteristic()); // FIXME: stable encoding
2285 Record.push_back(File.hasLineDirectives());
2286
2287 const SrcMgr::ContentCache *Content = File.getContentCache();
2288 bool EmitBlob = false;
2289 if (Content->OrigEntry) {
2290 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2291, __PRETTY_FUNCTION__))
2291 "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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2291, __PRETTY_FUNCTION__))
;
2292
2293 // The source location entry is a file. Emit input file ID.
2294 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2294, __PRETTY_FUNCTION__))
;
2295 Record.push_back(InputFileIDs[Content->OrigEntry]);
2296
2297 Record.push_back(File.NumCreatedFIDs);
2298
2299 FileDeclIDsTy::iterator FDI = FileDeclIDs.find(FID);
2300 if (FDI != FileDeclIDs.end()) {
2301 Record.push_back(FDI->second->FirstDeclIndex);
2302 Record.push_back(FDI->second->DeclIDs.size());
2303 } else {
2304 Record.push_back(0);
2305 Record.push_back(0);
2306 }
2307
2308 Stream.EmitRecordWithAbbrev(SLocFileAbbrv, Record);
2309
2310 if (Content->BufferOverridden || Content->IsTransient)
2311 EmitBlob = true;
2312 } else {
2313 // The source location entry is a buffer. The blob associated
2314 // with this entry contains the contents of the buffer.
2315
2316 // We add one to the size so that we capture the trailing NULL
2317 // that is required by llvm::MemoryBuffer::getMemBuffer (on
2318 // the reader side).
2319 const llvm::MemoryBuffer *Buffer =
2320 Content->getBuffer(PP.getDiagnostics(), PP.getFileManager());
2321 StringRef Name = Buffer->getBufferIdentifier();
2322 Stream.EmitRecordWithBlob(SLocBufferAbbrv, Record,
2323 StringRef(Name.data(), Name.size() + 1));
2324 EmitBlob = true;
2325
2326 if (Name == "<built-in>")
2327 PreloadSLocs.push_back(SLocEntryOffsets.size());
2328 }
2329
2330 if (EmitBlob) {
2331 // Include the implicit terminating null character in the on-disk buffer
2332 // if we're writing it uncompressed.
2333 const llvm::MemoryBuffer *Buffer =
2334 Content->getBuffer(PP.getDiagnostics(), PP.getFileManager());
2335 StringRef Blob(Buffer->getBufferStart(), Buffer->getBufferSize() + 1);
2336 emitBlob(Stream, Blob, SLocBufferBlobCompressedAbbrv,
2337 SLocBufferBlobAbbrv);
2338 }
2339 } else {
2340 // The source location entry is a macro expansion.
2341 const SrcMgr::ExpansionInfo &Expansion = SLoc->getExpansion();
2342 AddSourceLocation(Expansion.getSpellingLoc(), Record);
2343 AddSourceLocation(Expansion.getExpansionLocStart(), Record);
2344 AddSourceLocation(Expansion.isMacroArgExpansion()
2345 ? SourceLocation()
2346 : Expansion.getExpansionLocEnd(),
2347 Record);
2348 Record.push_back(Expansion.isExpansionTokenRange());
2349
2350 // Compute the token length for this macro expansion.
2351 unsigned NextOffset = SourceMgr.getNextLocalOffset();
2352 if (I + 1 != N)
2353 NextOffset = SourceMgr.getLocalSLocEntry(I + 1).getOffset();
2354 Record.push_back(NextOffset - SLoc->getOffset() - 1);
2355 Stream.EmitRecordWithAbbrev(SLocExpansionAbbrv, Record);
2356 }
2357 }
2358
2359 Stream.ExitBlock();
2360
2361 if (SLocEntryOffsets.empty())
2362 return;
2363
2364 // Write the source-location offsets table into the AST block. This
2365 // table is used for lazily loading source-location information.
2366 using namespace llvm;
2367
2368 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2369 Abbrev->Add(BitCodeAbbrevOp(SOURCE_LOCATION_OFFSETS));
2370 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs
2371 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // total size
2372 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets
2373 unsigned SLocOffsetsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2374 {
2375 RecordData::value_type Record[] = {
2376 SOURCE_LOCATION_OFFSETS, SLocEntryOffsets.size(),
2377 SourceMgr.getNextLocalOffset() - 1 /* skip dummy */};
2378 Stream.EmitRecordWithBlob(SLocOffsetsAbbrev, Record,
2379 bytes(SLocEntryOffsets));
2380 }
2381 // Write the source location entry preloads array, telling the AST
2382 // reader which source locations entries it should load eagerly.
2383 Stream.EmitRecord(SOURCE_LOCATION_PRELOADS, PreloadSLocs);
2384
2385 // Write the line table. It depends on remapping working, so it must come
2386 // after the source location offsets.
2387 if (SourceMgr.hasLineTable()) {
2388 LineTableInfo &LineTable = SourceMgr.getLineTable();
2389
2390 Record.clear();
2391
2392 // Emit the needed file names.
2393 llvm::DenseMap<int, int> FilenameMap;
2394 FilenameMap[-1] = -1; // For unspecified filenames.
2395 for (const auto &L : LineTable) {
2396 if (L.first.ID < 0)
2397 continue;
2398 for (auto &LE : L.second) {
2399 if (FilenameMap.insert(std::make_pair(LE.FilenameID,
2400 FilenameMap.size() - 1)).second)
2401 AddPath(LineTable.getFilename(LE.FilenameID), Record);
2402 }
2403 }
2404 Record.push_back(0);
2405
2406 // Emit the line entries
2407 for (const auto &L : LineTable) {
2408 // Only emit entries for local files.
2409 if (L.first.ID < 0)
2410 continue;
2411
2412 // Emit the file ID
2413 Record.push_back(L.first.ID);
2414
2415 // Emit the line entries
2416 Record.push_back(L.second.size());
2417 for (const auto &LE : L.second) {
2418 Record.push_back(LE.FileOffset);
2419 Record.push_back(LE.LineNo);
2420 Record.push_back(FilenameMap[LE.FilenameID]);
2421 Record.push_back((unsigned)LE.FileKind);
2422 Record.push_back(LE.IncludeOffset);
2423 }
2424 }
2425
2426 Stream.EmitRecord(SOURCE_MANAGER_LINE_TABLE, Record);
2427 }
2428}
2429
2430//===----------------------------------------------------------------------===//
2431// Preprocessor Serialization
2432//===----------------------------------------------------------------------===//
2433
2434static bool shouldIgnoreMacro(MacroDirective *MD, bool IsModule,
2435 const Preprocessor &PP) {
2436 if (MacroInfo *MI = MD->getMacroInfo())
2437 if (MI->isBuiltinMacro())
2438 return true;
2439
2440 if (IsModule) {
2441 SourceLocation Loc = MD->getLocation();
2442 if (Loc.isInvalid())
2443 return true;
2444 if (PP.getSourceManager().getFileID(Loc) == PP.getPredefinesFileID())
2445 return true;
2446 }
2447
2448 return false;
2449}
2450
2451/// Writes the block containing the serialized form of the
2452/// preprocessor.
2453void ASTWriter::WritePreprocessor(const Preprocessor &PP, bool IsModule) {
2454 PreprocessingRecord *PPRec = PP.getPreprocessingRecord();
2455 if (PPRec)
2456 WritePreprocessorDetail(*PPRec);
2457
2458 RecordData Record;
2459 RecordData ModuleMacroRecord;
2460
2461 // If the preprocessor __COUNTER__ value has been bumped, remember it.
2462 if (PP.getCounterValue() != 0) {
2463 RecordData::value_type Record[] = {PP.getCounterValue()};
2464 Stream.EmitRecord(PP_COUNTER_VALUE, Record);
2465 }
2466
2467 if (PP.isRecordingPreamble() && PP.hasRecordedPreamble()) {
2468 assert(!IsModule)((!IsModule) ? static_cast<void> (0) : __assert_fail ("!IsModule"
, "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2468, __PRETTY_FUNCTION__))
;
2469 auto SkipInfo = PP.getPreambleSkipInfo();
2470 if (SkipInfo.hasValue()) {
2471 Record.push_back(true);
2472 AddSourceLocation(SkipInfo->HashTokenLoc, Record);
2473 AddSourceLocation(SkipInfo->IfTokenLoc, Record);
2474 Record.push_back(SkipInfo->FoundNonSkipPortion);
2475 Record.push_back(SkipInfo->FoundElse);
2476 AddSourceLocation(SkipInfo->ElseLoc, Record);
2477 } else {
2478 Record.push_back(false);
2479 }
2480 for (const auto &Cond : PP.getPreambleConditionalStack()) {
2481 AddSourceLocation(Cond.IfLoc, Record);
2482 Record.push_back(Cond.WasSkipping);
2483 Record.push_back(Cond.FoundNonSkip);
2484 Record.push_back(Cond.FoundElse);
2485 }
2486 Stream.EmitRecord(PP_CONDITIONAL_STACK, Record);
2487 Record.clear();
2488 }
2489
2490 // Enter the preprocessor block.
2491 Stream.EnterSubblock(PREPROCESSOR_BLOCK_ID, 3);
2492
2493 // If the AST file contains __DATE__ or __TIME__ emit a warning about this.
2494 // FIXME: Include a location for the use, and say which one was used.
2495 if (PP.SawDateOrTime())
2496 PP.Diag(SourceLocation(), diag::warn_module_uses_date_time) << IsModule;
2497
2498 // Loop over all the macro directives that are live at the end of the file,
2499 // emitting each to the PP section.
2500
2501 // Construct the list of identifiers with macro directives that need to be
2502 // serialized.
2503 SmallVector<const IdentifierInfo *, 128> MacroIdentifiers;
2504 for (auto &Id : PP.getIdentifierTable())
2505 if (Id.second->hadMacroDefinition() &&
2506 (!Id.second->isFromAST() ||
2507 Id.second->hasChangedSinceDeserialization()))
2508 MacroIdentifiers.push_back(Id.second);
2509 // Sort the set of macro definitions that need to be serialized by the
2510 // name of the macro, to provide a stable ordering.
2511 llvm::sort(MacroIdentifiers, llvm::deref<std::less<>>());
2512
2513 // Emit the macro directives as a list and associate the offset with the
2514 // identifier they belong to.
2515 for (const IdentifierInfo *Name : MacroIdentifiers) {
2516 MacroDirective *MD = PP.getLocalMacroDirectiveHistory(Name);
2517 auto StartOffset = Stream.GetCurrentBitNo();
2518
2519 // Emit the macro directives in reverse source order.
2520 for (; MD; MD = MD->getPrevious()) {
2521 // Once we hit an ignored macro, we're done: the rest of the chain
2522 // will all be ignored macros.
2523 if (shouldIgnoreMacro(MD, IsModule, PP))
2524 break;
2525
2526 AddSourceLocation(MD->getLocation(), Record);
2527 Record.push_back(MD->getKind());
2528 if (auto *DefMD = dyn_cast<DefMacroDirective>(MD)) {
2529 Record.push_back(getMacroRef(DefMD->getInfo(), Name));
2530 } else if (auto *VisMD = dyn_cast<VisibilityMacroDirective>(MD)) {
2531 Record.push_back(VisMD->isPublic());
2532 }
2533 }
2534
2535 // Write out any exported module macros.
2536 bool EmittedModuleMacros = false;
2537 // We write out exported module macros for PCH as well.
2538 auto Leafs = PP.getLeafModuleMacros(Name);
2539 SmallVector<ModuleMacro*, 8> Worklist(Leafs.begin(), Leafs.end());
2540 llvm::DenseMap<ModuleMacro*, unsigned> Visits;
2541 while (!Worklist.empty()) {
2542 auto *Macro = Worklist.pop_back_val();
2543
2544 // Emit a record indicating this submodule exports this macro.
2545 ModuleMacroRecord.push_back(
2546 getSubmoduleID(Macro->getOwningModule()));
2547 ModuleMacroRecord.push_back(getMacroRef(Macro->getMacroInfo(), Name));
2548 for (auto *M : Macro->overrides())
2549 ModuleMacroRecord.push_back(getSubmoduleID(M->getOwningModule()));
2550
2551 Stream.EmitRecord(PP_MODULE_MACRO, ModuleMacroRecord);
2552 ModuleMacroRecord.clear();
2553
2554 // Enqueue overridden macros once we've visited all their ancestors.
2555 for (auto *M : Macro->overrides())
2556 if (++Visits[M] == M->getNumOverridingMacros())
2557 Worklist.push_back(M);
2558
2559 EmittedModuleMacros = true;
2560 }
2561
2562 if (Record.empty() && !EmittedModuleMacros)
2563 continue;
2564
2565 IdentMacroDirectivesOffsetMap[Name] = StartOffset;
2566 Stream.EmitRecord(PP_MACRO_DIRECTIVE_HISTORY, Record);
2567 Record.clear();
2568 }
2569
2570 /// Offsets of each of the macros into the bitstream, indexed by
2571 /// the local macro ID
2572 ///
2573 /// For each identifier that is associated with a macro, this map
2574 /// provides the offset into the bitstream where that macro is
2575 /// defined.
2576 std::vector<uint32_t> MacroOffsets;
2577
2578 for (unsigned I = 0, N = MacroInfosToEmit.size(); I != N; ++I) {
2579 const IdentifierInfo *Name = MacroInfosToEmit[I].Name;
2580 MacroInfo *MI = MacroInfosToEmit[I].MI;
2581 MacroID ID = MacroInfosToEmit[I].ID;
2582
2583 if (ID < FirstMacroID) {
2584 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2584, __PRETTY_FUNCTION__))
;
2585 continue;
2586 }
2587
2588 // Record the local offset of this macro.
2589 unsigned Index = ID - FirstMacroID;
2590 if (Index == MacroOffsets.size())
2591 MacroOffsets.push_back(Stream.GetCurrentBitNo());
2592 else {
2593 if (Index > MacroOffsets.size())
2594 MacroOffsets.resize(Index + 1);
2595
2596 MacroOffsets[Index] = Stream.GetCurrentBitNo();
2597 }
2598
2599 AddIdentifierRef(Name, Record);
2600 AddSourceLocation(MI->getDefinitionLoc(), Record);
2601 AddSourceLocation(MI->getDefinitionEndLoc(), Record);
2602 Record.push_back(MI->isUsed());
2603 Record.push_back(MI->isUsedForHeaderGuard());
2604 unsigned Code;
2605 if (MI->isObjectLike()) {
2606 Code = PP_MACRO_OBJECT_LIKE;
2607 } else {
2608 Code = PP_MACRO_FUNCTION_LIKE;
2609
2610 Record.push_back(MI->isC99Varargs());
2611 Record.push_back(MI->isGNUVarargs());
2612 Record.push_back(MI->hasCommaPasting());
2613 Record.push_back(MI->getNumParams());
2614 for (const IdentifierInfo *Param : MI->params())
2615 AddIdentifierRef(Param, Record);
2616 }
2617
2618 // If we have a detailed preprocessing record, record the macro definition
2619 // ID that corresponds to this macro.
2620 if (PPRec)
2621 Record.push_back(MacroDefinitions[PPRec->findMacroDefinition(MI)]);
2622
2623 Stream.EmitRecord(Code, Record);
2624 Record.clear();
2625
2626 // Emit the tokens array.
2627 for (unsigned TokNo = 0, e = MI->getNumTokens(); TokNo != e; ++TokNo) {
2628 // Note that we know that the preprocessor does not have any annotation
2629 // tokens in it because they are created by the parser, and thus can't
2630 // be in a macro definition.
2631 const Token &Tok = MI->getReplacementToken(TokNo);
2632 AddToken(Tok, Record);
2633 Stream.EmitRecord(PP_TOKEN, Record);
2634 Record.clear();
2635 }
2636 ++NumMacros;
2637 }
2638
2639 Stream.ExitBlock();
2640
2641 // Write the offsets table for macro IDs.
2642 using namespace llvm;
2643
2644 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2645 Abbrev->Add(BitCodeAbbrevOp(MACRO_OFFSET));
2646 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of macros
2647 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
2648 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2649
2650 unsigned MacroOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2651 {
2652 RecordData::value_type Record[] = {MACRO_OFFSET, MacroOffsets.size(),
2653 FirstMacroID - NUM_PREDEF_MACRO_IDS};
2654 Stream.EmitRecordWithBlob(MacroOffsetAbbrev, Record, bytes(MacroOffsets));
2655 }
2656}
2657
2658void ASTWriter::WritePreprocessorDetail(PreprocessingRecord &PPRec) {
2659 if (PPRec.local_begin() == PPRec.local_end())
2660 return;
2661
2662 SmallVector<PPEntityOffset, 64> PreprocessedEntityOffsets;
2663
2664 // Enter the preprocessor block.
2665 Stream.EnterSubblock(PREPROCESSOR_DETAIL_BLOCK_ID, 3);
2666
2667 // If the preprocessor has a preprocessing record, emit it.
2668 unsigned NumPreprocessingRecords = 0;
2669 using namespace llvm;
2670
2671 // Set up the abbreviation for
2672 unsigned InclusionAbbrev = 0;
2673 {
2674 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2675 Abbrev->Add(BitCodeAbbrevOp(PPD_INCLUSION_DIRECTIVE));
2676 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // filename length
2677 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // in quotes
2678 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // kind
2679 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // imported module
2680 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2681 InclusionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2682 }
2683
2684 unsigned FirstPreprocessorEntityID
2685 = (Chain ? PPRec.getNumLoadedPreprocessedEntities() : 0)
2686 + NUM_PREDEF_PP_ENTITY_IDS;
2687 unsigned NextPreprocessorEntityID = FirstPreprocessorEntityID;
2688 RecordData Record;
2689 for (PreprocessingRecord::iterator E = PPRec.local_begin(),
2690 EEnd = PPRec.local_end();
2691 E != EEnd;
2692 (void)++E, ++NumPreprocessingRecords, ++NextPreprocessorEntityID) {
2693 Record.clear();
2694
2695 PreprocessedEntityOffsets.push_back(
2696 PPEntityOffset((*E)->getSourceRange(), Stream.GetCurrentBitNo()));
2697
2698 if (auto *MD = dyn_cast<MacroDefinitionRecord>(*E)) {
2699 // Record this macro definition's ID.
2700 MacroDefinitions[MD] = NextPreprocessorEntityID;
2701
2702 AddIdentifierRef(MD->getName(), Record);
2703 Stream.EmitRecord(PPD_MACRO_DEFINITION, Record);
2704 continue;
2705 }
2706
2707 if (auto *ME = dyn_cast<MacroExpansion>(*E)) {
2708 Record.push_back(ME->isBuiltinMacro());
2709 if (ME->isBuiltinMacro())
2710 AddIdentifierRef(ME->getName(), Record);
2711 else
2712 Record.push_back(MacroDefinitions[ME->getDefinition()]);
2713 Stream.EmitRecord(PPD_MACRO_EXPANSION, Record);
2714 continue;
2715 }
2716
2717 if (auto *ID = dyn_cast<InclusionDirective>(*E)) {
2718 Record.push_back(PPD_INCLUSION_DIRECTIVE);
2719 Record.push_back(ID->getFileName().size());
2720 Record.push_back(ID->wasInQuotes());
2721 Record.push_back(static_cast<unsigned>(ID->getKind()));
2722 Record.push_back(ID->importedModule());
2723 SmallString<64> Buffer;
2724 Buffer += ID->getFileName();
2725 // Check that the FileEntry is not null because it was not resolved and
2726 // we create a PCH even with compiler errors.
2727 if (ID->getFile())
2728 Buffer += ID->getFile()->getName();
2729 Stream.EmitRecordWithBlob(InclusionAbbrev, Record, Buffer);
2730 continue;
2731 }
2732
2733 llvm_unreachable("Unhandled PreprocessedEntity in ASTWriter")::llvm::llvm_unreachable_internal("Unhandled PreprocessedEntity in ASTWriter"
, "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2733)
;
2734 }
2735 Stream.ExitBlock();
2736
2737 // Write the offsets table for the preprocessing record.
2738 if (NumPreprocessingRecords > 0) {
2739 assert(PreprocessedEntityOffsets.size() == NumPreprocessingRecords)((PreprocessedEntityOffsets.size() == NumPreprocessingRecords
) ? static_cast<void> (0) : __assert_fail ("PreprocessedEntityOffsets.size() == NumPreprocessingRecords"
, "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2739, __PRETTY_FUNCTION__))
;
2740
2741 // Write the offsets table for identifier IDs.
2742 using namespace llvm;
2743
2744 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2745 Abbrev->Add(BitCodeAbbrevOp(PPD_ENTITIES_OFFSETS));
2746 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first pp entity
2747 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2748 unsigned PPEOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2749
2750 RecordData::value_type Record[] = {PPD_ENTITIES_OFFSETS,
2751 FirstPreprocessorEntityID -
2752 NUM_PREDEF_PP_ENTITY_IDS};
2753 Stream.EmitRecordWithBlob(PPEOffsetAbbrev, Record,
2754 bytes(PreprocessedEntityOffsets));
2755 }
2756
2757 // Write the skipped region table for the preprocessing record.
2758 ArrayRef<SourceRange> SkippedRanges = PPRec.getSkippedRanges();
2759 if (SkippedRanges.size() > 0) {
2760 std::vector<PPSkippedRange> SerializedSkippedRanges;
2761 SerializedSkippedRanges.reserve(SkippedRanges.size());
2762 for (auto const& Range : SkippedRanges)
2763 SerializedSkippedRanges.emplace_back(Range);
2764
2765 using namespace llvm;
2766 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2767 Abbrev->Add(BitCodeAbbrevOp(PPD_SKIPPED_RANGES));
2768 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2769 unsigned PPESkippedRangeAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2770
2771 Record.clear();
2772 Record.push_back(PPD_SKIPPED_RANGES);
2773 Stream.EmitRecordWithBlob(PPESkippedRangeAbbrev, Record,
2774 bytes(SerializedSkippedRanges));
2775 }
2776}
2777
2778unsigned ASTWriter::getLocalOrImportedSubmoduleID(Module *Mod) {
2779 if (!Mod)
2780 return 0;
2781
2782 llvm::DenseMap<Module *, unsigned>::iterator Known = SubmoduleIDs.find(Mod);
2783 if (Known != SubmoduleIDs.end())
2784 return Known->second;
2785
2786 auto *Top = Mod->getTopLevelModule();
2787 if (Top != WritingModule &&
2788 (getLangOpts().CompilingPCH ||
2789 !Top->fullModuleNameIs(StringRef(getLangOpts().CurrentModule))))
2790 return 0;
2791
2792 return SubmoduleIDs[Mod] = NextSubmoduleID++;
2793}
2794
2795unsigned ASTWriter::getSubmoduleID(Module *Mod) {
2796 // FIXME: This can easily happen, if we have a reference to a submodule that
2797 // did not result in us loading a module file for that submodule. For
2798 // instance, a cross-top-level-module 'conflict' declaration will hit this.
2799 unsigned ID = getLocalOrImportedSubmoduleID(Mod);
2800 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2801, __PRETTY_FUNCTION__))
2801 "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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2801, __PRETTY_FUNCTION__))
;
2802 return ID;
2803}
2804
2805/// Compute the number of modules within the given tree (including the
2806/// given module).
2807static unsigned getNumberOfModules(Module *Mod) {
2808 unsigned ChildModules = 0;
2809 for (auto Sub = Mod->submodule_begin(), SubEnd = Mod->submodule_end();
2810 Sub != SubEnd; ++Sub)
2811 ChildModules += getNumberOfModules(*Sub);
2812
2813 return ChildModules + 1;
2814}
2815
2816void ASTWriter::WriteSubmodules(Module *WritingModule) {
2817 // Enter the submodule description block.
2818 Stream.EnterSubblock(SUBMODULE_BLOCK_ID, /*bits for abbreviations*/5);
2819
2820 // Write the abbreviations needed for the submodules block.
2821 using namespace llvm;
2822
2823 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2824 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_DEFINITION));
2825 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
2826 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Parent
2827 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Kind
2828 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2829 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExplicit
2830 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsSystem
2831 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExternC
2832 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferSubmodules...
2833 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExplicit...
2834 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExportWild...
2835 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ConfigMacrosExh...
2836 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ModuleMapIsPriv...
2837 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2838 unsigned DefinitionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2839
2840 Abbrev = std::make_shared<BitCodeAbbrev>();
2841 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_HEADER));
2842 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2843 unsigned UmbrellaAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2844
2845 Abbrev = std::make_shared<BitCodeAbbrev>();
2846 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_HEADER));
2847 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2848 unsigned HeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2849
2850 Abbrev = std::make_shared<BitCodeAbbrev>();
2851 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TOPHEADER));
2852 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2853 unsigned TopHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2854
2855 Abbrev = std::make_shared<BitCodeAbbrev>();
2856 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_DIR));
2857 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2858 unsigned UmbrellaDirAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2859
2860 Abbrev = std::make_shared<BitCodeAbbrev>();
2861 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_REQUIRES));
2862 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // State
2863 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Feature
2864 unsigned RequiresAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2865
2866 Abbrev = std::make_shared<BitCodeAbbrev>();
2867 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXCLUDED_HEADER));
2868 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2869 unsigned ExcludedHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2870
2871 Abbrev = std::make_shared<BitCodeAbbrev>();
2872 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TEXTUAL_HEADER));
2873 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2874 unsigned TextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2875
2876 Abbrev = std::make_shared<BitCodeAbbrev>();
2877 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_HEADER));
2878 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2879 unsigned PrivateHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2880
2881 Abbrev = std::make_shared<BitCodeAbbrev>();
2882 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_TEXTUAL_HEADER));
2883 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2884 unsigned PrivateTextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2885
2886 Abbrev = std::make_shared<BitCodeAbbrev>();
2887 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_LINK_LIBRARY));
2888 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2889 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2890 unsigned LinkLibraryAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2891
2892 Abbrev = std::make_shared<BitCodeAbbrev>();
2893 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFIG_MACRO));
2894 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2895 unsigned ConfigMacroAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2896
2897 Abbrev = std::make_shared<BitCodeAbbrev>();
2898 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFLICT));
2899 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Other module
2900 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Message
2901 unsigned ConflictAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2902
2903 Abbrev = std::make_shared<BitCodeAbbrev>();
2904 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXPORT_AS));
2905 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2906 unsigned ExportAsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2907
2908 // Write the submodule metadata block.
2909 RecordData::value_type Record[] = {
2910 getNumberOfModules(WritingModule),
2911 FirstSubmoduleID - NUM_PREDEF_SUBMODULE_IDS};
2912 Stream.EmitRecord(SUBMODULE_METADATA, Record);
2913
2914 // Write all of the submodules.
2915 std::queue<Module *> Q;
2916 Q.push(WritingModule);
2917 while (!Q.empty()) {
2918 Module *Mod = Q.front();
2919 Q.pop();
2920 unsigned ID = getSubmoduleID(Mod);
2921
2922 uint64_t ParentID = 0;
2923 if (Mod->Parent) {
2924 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2924, __PRETTY_FUNCTION__))
;
2925 ParentID = SubmoduleIDs[Mod->Parent];
2926 }
2927
2928 // Emit the definition of the block.
2929 {
2930 RecordData::value_type Record[] = {SUBMODULE_DEFINITION,
2931 ID,
2932 ParentID,
2933 (RecordData::value_type)Mod->Kind,
2934 Mod->IsFramework,
2935 Mod->IsExplicit,
2936 Mod->IsSystem,
2937 Mod->IsExternC,
2938 Mod->InferSubmodules,
2939 Mod->InferExplicitSubmodules,
2940 Mod->InferExportWildcard,
2941 Mod->ConfigMacrosExhaustive,
2942 Mod->ModuleMapIsPrivate};
2943 Stream.EmitRecordWithBlob(DefinitionAbbrev, Record, Mod->Name);
2944 }
2945
2946 // Emit the requirements.
2947 for (const auto &R : Mod->Requirements) {
2948 RecordData::value_type Record[] = {SUBMODULE_REQUIRES, R.second};
2949 Stream.EmitRecordWithBlob(RequiresAbbrev, Record, R.first);
2950 }
2951
2952 // Emit the umbrella header, if there is one.
2953 if (auto UmbrellaHeader = Mod->getUmbrellaHeader()) {
2954 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_HEADER};
2955 Stream.EmitRecordWithBlob(UmbrellaAbbrev, Record,
2956 UmbrellaHeader.NameAsWritten);
2957 } else if (auto UmbrellaDir = Mod->getUmbrellaDir()) {
2958 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_DIR};
2959 Stream.EmitRecordWithBlob(UmbrellaDirAbbrev, Record,
2960 UmbrellaDir.NameAsWritten);
2961 }
2962
2963 // Emit the headers.
2964 struct {
2965 unsigned RecordKind;
2966 unsigned Abbrev;
2967 Module::HeaderKind HeaderKind;
2968 } HeaderLists[] = {
2969 {SUBMODULE_HEADER, HeaderAbbrev, Module::HK_Normal},
2970 {SUBMODULE_TEXTUAL_HEADER, TextualHeaderAbbrev, Module::HK_Textual},
2971 {SUBMODULE_PRIVATE_HEADER, PrivateHeaderAbbrev, Module::HK_Private},
2972 {SUBMODULE_PRIVATE_TEXTUAL_HEADER, PrivateTextualHeaderAbbrev,
2973 Module::HK_PrivateTextual},
2974 {SUBMODULE_EXCLUDED_HEADER, ExcludedHeaderAbbrev, Module::HK_Excluded}
2975 };
2976 for (auto &HL : HeaderLists) {
2977 RecordData::value_type Record[] = {HL.RecordKind};
2978 for (auto &H : Mod->Headers[HL.HeaderKind])
2979 Stream.EmitRecordWithBlob(HL.Abbrev, Record, H.NameAsWritten);
2980 }
2981
2982 // Emit the top headers.
2983 {
2984 auto TopHeaders = Mod->getTopHeaders(PP->getFileManager());
2985 RecordData::value_type Record[] = {SUBMODULE_TOPHEADER};
2986 for (auto *H : TopHeaders)
2987 Stream.EmitRecordWithBlob(TopHeaderAbbrev, Record, H->getName());
2988 }
2989
2990 // Emit the imports.
2991 if (!Mod->Imports.empty()) {
2992 RecordData Record;
2993 for (auto *I : Mod->Imports)
2994 Record.push_back(getSubmoduleID(I));
2995 Stream.EmitRecord(SUBMODULE_IMPORTS, Record);
2996 }
2997
2998 // Emit the exports.
2999 if (!Mod->Exports.empty()) {
3000 RecordData Record;
3001 for (const auto &E : Mod->Exports) {
3002 // FIXME: This may fail; we don't require that all exported modules
3003 // are local or imported.
3004 Record.push_back(getSubmoduleID(E.getPointer()));
3005 Record.push_back(E.getInt());
3006 }
3007 Stream.EmitRecord(SUBMODULE_EXPORTS, Record);
3008 }
3009
3010 //FIXME: How do we emit the 'use'd modules? They may not be submodules.
3011 // Might be unnecessary as use declarations are only used to build the
3012 // module itself.
3013
3014 // Emit the link libraries.
3015 for (const auto &LL : Mod->LinkLibraries) {
3016 RecordData::value_type Record[] = {SUBMODULE_LINK_LIBRARY,
3017 LL.IsFramework};
3018 Stream.EmitRecordWithBlob(LinkLibraryAbbrev, Record, LL.Library);
3019 }
3020
3021 // Emit the conflicts.
3022 for (const auto &C : Mod->Conflicts) {
3023 // FIXME: This may fail; we don't require that all conflicting modules
3024 // are local or imported.
3025 RecordData::value_type Record[] = {SUBMODULE_CONFLICT,
3026 getSubmoduleID(C.Other)};
3027 Stream.EmitRecordWithBlob(ConflictAbbrev, Record, C.Message);
3028 }
3029
3030 // Emit the configuration macros.
3031 for (const auto &CM : Mod->ConfigMacros) {
3032 RecordData::value_type Record[] = {SUBMODULE_CONFIG_MACRO};
3033 Stream.EmitRecordWithBlob(ConfigMacroAbbrev, Record, CM);
3034 }
3035
3036 // Emit the initializers, if any.
3037 RecordData Inits;
3038 for (Decl *D : Context->getModuleInitializers(Mod))
3039 Inits.push_back(GetDeclRef(D));
3040 if (!Inits.empty())
3041 Stream.EmitRecord(SUBMODULE_INITIALIZERS, Inits);
3042
3043 // Emit the name of the re-exported module, if any.
3044 if (!Mod->ExportAsModule.empty()) {
3045 RecordData::value_type Record[] = {SUBMODULE_EXPORT_AS};
3046 Stream.EmitRecordWithBlob(ExportAsAbbrev, Record, Mod->ExportAsModule);
3047 }
3048
3049 // Queue up the submodules of this module.
3050 for (auto *M : Mod->submodules())
3051 Q.push(M);
3052 }
3053
3054 Stream.ExitBlock();
3055
3056 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3059, __PRETTY_FUNCTION__))
3057 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3059, __PRETTY_FUNCTION__))
3058 "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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3059, __PRETTY_FUNCTION__))
3059 "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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3059, __PRETTY_FUNCTION__))
;
3060}
3061
3062void ASTWriter::WritePragmaDiagnosticMappings(const DiagnosticsEngine &Diag,
3063 bool isModule) {
3064 llvm::SmallDenseMap<const DiagnosticsEngine::DiagState *, unsigned, 64>
3065 DiagStateIDMap;
3066 unsigned CurrID = 0;
3067 RecordData Record;
3068
3069 auto EncodeDiagStateFlags =
3070 [](const DiagnosticsEngine::DiagState *DS) -> unsigned {
3071 unsigned Result = (unsigned)DS->ExtBehavior;
3072 for (unsigned Val :
3073 {(unsigned)DS->IgnoreAllWarnings, (unsigned)DS->EnableAllWarnings,
3074 (unsigned)DS->WarningsAsErrors, (unsigned)DS->ErrorsAsFatal,
3075 (unsigned)DS->SuppressSystemWarnings})
3076 Result = (Result << 1) | Val;
3077 return Result;
3078 };
3079
3080 unsigned Flags = EncodeDiagStateFlags(Diag.DiagStatesByLoc.FirstDiagState);
3081 Record.push_back(Flags);
3082
3083 auto AddDiagState = [&](const DiagnosticsEngine::DiagState *State,
3084 bool IncludeNonPragmaStates) {
3085 // Ensure that the diagnostic state wasn't modified since it was created.
3086 // We will not correctly round-trip this information otherwise.
3087 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3088, __PRETTY_FUNCTION__))
3088 "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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3088, __PRETTY_FUNCTION__))
;
3089
3090 unsigned &DiagStateID = DiagStateIDMap[State];
3091 Record.push_back(DiagStateID);
3092
3093 if (DiagStateID == 0) {
3094 DiagStateID = ++CurrID;
3095
3096 // Add a placeholder for the number of mappings.
3097 auto SizeIdx = Record.size();
3098 Record.emplace_back();
3099 for (const auto &I : *State) {
3100 if (I.second.isPragma() || IncludeNonPragmaStates) {
3101 Record.push_back(I.first);
3102 Record.push_back(I.second.serialize());
3103 }
3104 }
3105 // Update the placeholder.
3106 Record[SizeIdx] = (Record.size() - SizeIdx) / 2;
3107 }
3108 };
3109
3110 AddDiagState(Diag.DiagStatesByLoc.FirstDiagState, isModule);
3111
3112 // Reserve a spot for the number of locations with state transitions.
3113 auto NumLocationsIdx = Record.size();
3114 Record.emplace_back();
3115
3116 // Emit the state transitions.
3117 unsigned NumLocations = 0;
3118 for (auto &FileIDAndFile : Diag.DiagStatesByLoc.Files) {
3119 if (!FileIDAndFile.first.isValid() ||
3120 !FileIDAndFile.second.HasLocalTransitions)
3121 continue;
3122 ++NumLocations;
3123
3124 SourceLocation Loc = Diag.SourceMgr->getComposedLoc(FileIDAndFile.first, 0);
3125 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3125, __PRETTY_FUNCTION__))
;
3126 AddSourceLocation(Loc, Record);
3127
3128 Record.push_back(FileIDAndFile.second.StateTransitions.size());
3129 for (auto &StatePoint : FileIDAndFile.second.StateTransitions) {
3130 Record.push_back(StatePoint.Offset);
3131 AddDiagState(StatePoint.State, false);
3132 }
3133 }
3134
3135 // Backpatch the number of locations.
3136 Record[NumLocationsIdx] = NumLocations;
3137
3138 // Emit CurDiagStateLoc. Do it last in order to match source order.
3139 //
3140 // This also protects against a hypothetical corner case with simulating
3141 // -Werror settings for implicit modules in the ASTReader, where reading
3142 // CurDiagState out of context could change whether warning pragmas are
3143 // treated as errors.
3144 AddSourceLocation(Diag.DiagStatesByLoc.CurDiagStateLoc, Record);
3145 AddDiagState(Diag.DiagStatesByLoc.CurDiagState, false);
3146
3147 Stream.EmitRecord(DIAG_PRAGMA_MAPPINGS, Record);
3148}
3149
3150//===----------------------------------------------------------------------===//
3151// Type Serialization
3152//===----------------------------------------------------------------------===//
3153
3154/// Write the representation of a type to the AST stream.
3155void ASTWriter::WriteType(QualType T) {
3156 TypeIdx &IdxRef = TypeIdxs[T];
3157 if (IdxRef.getIndex() == 0) // we haven't seen this type before.
3158 IdxRef = TypeIdx(NextTypeID++);
3159 TypeIdx Idx = IdxRef;
3160
3161 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3161, __PRETTY_FUNCTION__))
;
3162
3163 RecordData Record;
3164
3165 // Emit the type's representation.
3166 ASTTypeWriter W(*this, Record);
3167 W.Visit(T);
3168 uint64_t Offset = W.Emit();
3169
3170 // Record the offset for this type.
3171 unsigned Index = Idx.getIndex() - FirstTypeID;
3172 if (TypeOffsets.size() == Index)
3173 TypeOffsets.push_back(Offset);
3174 else if (TypeOffsets.size() < Index) {
3175 TypeOffsets.resize(Index + 1);
3176 TypeOffsets[Index] = Offset;
3177 } else {
3178 llvm_unreachable("Types emitted in wrong order")::llvm::llvm_unreachable_internal("Types emitted in wrong order"
, "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3178)
;
3179 }
3180}
3181
3182//===----------------------------------------------------------------------===//
3183// Declaration Serialization
3184//===----------------------------------------------------------------------===//
3185
3186/// Write the block containing all of the declaration IDs
3187/// lexically declared within the given DeclContext.
3188///
3189/// \returns the offset of the DECL_CONTEXT_LEXICAL block within the
3190/// bitstream, or 0 if no block was written.
3191uint64_t ASTWriter::WriteDeclContextLexicalBlock(ASTContext &Context,
3192 DeclContext *DC) {
3193 if (DC->decls_empty())
3194 return 0;
3195
3196 uint64_t Offset = Stream.GetCurrentBitNo();
3197 SmallVector<uint32_t, 128> KindDeclPairs;
3198 for (const auto *D : DC->decls()) {
3199 KindDeclPairs.push_back(D->getKind());
3200 KindDeclPairs.push_back(GetDeclRef(D));
3201 }
3202
3203 ++NumLexicalDeclContexts;
3204 RecordData::value_type Record[] = {DECL_CONTEXT_LEXICAL};
3205 Stream.EmitRecordWithBlob(DeclContextLexicalAbbrev, Record,
3206 bytes(KindDeclPairs));
3207 return Offset;
3208}
3209
3210void ASTWriter::WriteTypeDeclOffsets() {
3211 using namespace llvm;
3212
3213 // Write the type offsets array
3214 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3215 Abbrev->Add(BitCodeAbbrevOp(TYPE_OFFSET));
3216 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of types
3217 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base type index
3218 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // types block
3219 unsigned TypeOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3220 {
3221 RecordData::value_type Record[] = {TYPE_OFFSET, TypeOffsets.size(),
3222 FirstTypeID - NUM_PREDEF_TYPE_IDS};
3223 Stream.EmitRecordWithBlob(TypeOffsetAbbrev, Record, bytes(TypeOffsets));
3224 }
3225
3226 // Write the declaration offsets array
3227 Abbrev = std::make_shared<BitCodeAbbrev>();
3228 Abbrev->Add(BitCodeAbbrevOp(DECL_OFFSET));
3229 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of declarations
3230 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base decl ID
3231 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // declarations block
3232 unsigned DeclOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3233 {
3234 RecordData::value_type Record[] = {DECL_OFFSET, DeclOffsets.size(),
3235 FirstDeclID - NUM_PREDEF_DECL_IDS};
3236 Stream.EmitRecordWithBlob(DeclOffsetAbbrev, Record, bytes(DeclOffsets));
3237 }
3238}
3239
3240void ASTWriter::WriteFileDeclIDsMap() {
3241 using namespace llvm;
3242
3243 SmallVector<std::pair<FileID, DeclIDInFileInfo *>, 64> SortedFileDeclIDs(
3244 FileDeclIDs.begin(), FileDeclIDs.end());
3245 llvm::sort(SortedFileDeclIDs, llvm::less_first());
3246
3247 // Join the vectors of DeclIDs from all files.
3248 SmallVector<DeclID, 256> FileGroupedDeclIDs;
3249 for (auto &FileDeclEntry : SortedFileDeclIDs) {
3250 DeclIDInFileInfo &Info = *FileDeclEntry.second;
3251 Info.FirstDeclIndex = FileGroupedDeclIDs.size();
3252 for (auto &LocDeclEntry : Info.DeclIDs)
3253 FileGroupedDeclIDs.push_back(LocDeclEntry.second);
3254 }
3255
3256 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3257 Abbrev->Add(BitCodeAbbrevOp(FILE_SORTED_DECLS));
3258 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3259 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3260 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
3261 RecordData::value_type Record[] = {FILE_SORTED_DECLS,
3262 FileGroupedDeclIDs.size()};
3263 Stream.EmitRecordWithBlob(AbbrevCode, Record, bytes(FileGroupedDeclIDs));
3264}
3265
3266void ASTWriter::WriteComments() {
3267 Stream.EnterSubblock(COMMENTS_BLOCK_ID, 3);
3268 auto _ = llvm::make_scope_exit([this] { Stream.ExitBlock(); });
3269 if (!PP->getPreprocessorOpts().WriteCommentListToPCH)
3270 return;
3271 RecordData Record;
3272 for (const auto &FO : Context->Comments.OrderedComments) {
3273 for (const auto &OC : FO.second) {
3274 const RawComment *I = OC.second;
3275 Record.clear();
3276 AddSourceRange(I->getSourceRange(), Record);
3277 Record.push_back(I->getKind());
3278 Record.push_back(I->isTrailingComment());
3279 Record.push_back(I->isAlmostTrailingComment());
3280 Stream.EmitRecord(COMMENTS_RAW_COMMENT, Record);
3281 }
3282 }
3283}
3284
3285//===----------------------------------------------------------------------===//
3286// Global Method Pool and Selector Serialization
3287//===----------------------------------------------------------------------===//
3288
3289namespace {
3290
3291// Trait used for the on-disk hash table used in the method pool.
3292class ASTMethodPoolTrait {
3293 ASTWriter &Writer;
3294
3295public:
3296 using key_type = Selector;
3297 using key_type_ref = key_type;
3298
3299 struct data_type {
3300 SelectorID ID;
3301 ObjCMethodList Instance, Factory;
3302 };
3303 using data_type_ref = const data_type &;
3304
3305 using hash_value_type = unsigned;
3306 using offset_type = unsigned;
3307
3308 explicit ASTMethodPoolTrait(ASTWriter &Writer) : Writer(Writer) {}
3309
3310 static hash_value_type ComputeHash(Selector Sel) {
3311 return serialization::ComputeHash(Sel);
3312 }
3313
3314 std::pair<unsigned, unsigned>
3315 EmitKeyDataLength(raw_ostream& Out, Selector Sel,
3316 data_type_ref Methods) {
3317 using namespace llvm::support;
3318
3319 endian::Writer LE(Out, little);
3320 unsigned KeyLen = 2 + (Sel.getNumArgs()? Sel.getNumArgs() * 4 : 4);
3321 LE.write<uint16_t>(KeyLen);
3322 unsigned DataLen = 4 + 2 + 2; // 2 bytes for each of the method counts
3323 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3324 Method = Method->getNext())
3325 if (Method->getMethod())
3326 DataLen += 4;
3327 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3328 Method = Method->getNext())
3329 if (Method->getMethod())
3330 DataLen += 4;
3331 LE.write<uint16_t>(DataLen);
3332 return std::make_pair(KeyLen, DataLen);
3333 }
3334
3335 void EmitKey(raw_ostream& Out, Selector Sel, unsigned) {
3336 using namespace llvm::support;
3337
3338 endian::Writer LE(Out, little);
3339 uint64_t Start = Out.tell();
3340 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3340, __PRETTY_FUNCTION__))
;
3341 Writer.SetSelectorOffset(Sel, Start);
3342 unsigned N = Sel.getNumArgs();
3343 LE.write<uint16_t>(N);
3344 if (N == 0)
3345 N = 1;
3346 for (unsigned I = 0; I != N; ++I)
3347 LE.write<uint32_t>(
3348 Writer.getIdentifierRef(Sel.getIdentifierInfoForSlot(I)));
3349 }
3350
3351 void EmitData(raw_ostream& Out, key_type_ref,
3352 data_type_ref Methods, unsigned DataLen) {
3353 using namespace llvm::support;
3354
3355 endian::Writer LE(Out, little);
3356 uint64_t Start = Out.tell(); (void)Start;
3357 LE.write<uint32_t>(Methods.ID);
3358 unsigned NumInstanceMethods = 0;
3359 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3360 Method = Method->getNext())
3361 if (Method->getMethod())
3362 ++NumInstanceMethods;
3363
3364 unsigned NumFactoryMethods = 0;
3365 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3366 Method = Method->getNext())
3367 if (Method->getMethod())
3368 ++NumFactoryMethods;
3369
3370 unsigned InstanceBits = Methods.Instance.getBits();
3371 assert(InstanceBits < 4)((InstanceBits < 4) ? static_cast<void> (0) : __assert_fail
("InstanceBits < 4", "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3371, __PRETTY_FUNCTION__))
;
3372 unsigned InstanceHasMoreThanOneDeclBit =
3373 Methods.Instance.hasMoreThanOneDecl();
3374 unsigned FullInstanceBits = (NumInstanceMethods << 3) |
3375 (InstanceHasMoreThanOneDeclBit << 2) |
3376 InstanceBits;
3377 unsigned FactoryBits = Methods.Factory.getBits();
3378 assert(FactoryBits < 4)((FactoryBits < 4) ? static_cast<void> (0) : __assert_fail
("FactoryBits < 4", "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3378, __PRETTY_FUNCTION__))
;
3379 unsigned FactoryHasMoreThanOneDeclBit =
3380 Methods.Factory.hasMoreThanOneDecl();
3381 unsigned FullFactoryBits = (NumFactoryMethods << 3) |
3382 (FactoryHasMoreThanOneDeclBit << 2) |
3383 FactoryBits;
3384 LE.write<uint16_t>(FullInstanceBits);
3385 LE.write<uint16_t>(FullFactoryBits);
3386 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3387 Method = Method->getNext())
3388 if (Method->getMethod())
3389 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3390 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3391 Method = Method->getNext())
3392 if (Method->getMethod())
3393 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3394
3395 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3395, __PRETTY_FUNCTION__))
;
3396 }
3397};
3398
3399} // namespace
3400
3401/// Write ObjC data: selectors and the method pool.
3402///
3403/// The method pool contains both instance and factory methods, stored
3404/// in an on-disk hash table indexed by the selector. The hash table also
3405/// contains an empty entry for every other selector known to Sema.
3406void ASTWriter::WriteSelectors(Sema &SemaRef) {
3407 using namespace llvm;
3408
3409 // Do we have to do anything at all?
3410 if (SemaRef.MethodPool.empty() && SelectorIDs.empty())
3411 return;
3412 unsigned NumTableEntries = 0;
3413 // Create and write out the blob that contains selectors and the method pool.
3414 {
3415 llvm::OnDiskChainedHashTableGenerator<ASTMethodPoolTrait> Generator;
3416 ASTMethodPoolTrait Trait(*this);
3417
3418 // Create the on-disk hash table representation. We walk through every
3419 // selector we've seen and look it up in the method pool.
3420 SelectorOffsets.resize(NextSelectorID - FirstSelectorID);
3421 for (auto &SelectorAndID : SelectorIDs) {
3422 Selector S = SelectorAndID.first;
3423 SelectorID ID = SelectorAndID.second;
3424 Sema::GlobalMethodPool::iterator F = SemaRef.MethodPool.find(S);
3425 ASTMethodPoolTrait::data_type Data = {
3426 ID,
3427 ObjCMethodList(),
3428 ObjCMethodList()
3429 };
3430 if (F != SemaRef.MethodPool.end()) {
3431 Data.Instance = F->second.first;
3432 Data.Factory = F->second.second;
3433 }
3434 // Only write this selector if it's not in an existing AST or something
3435 // changed.
3436 if (Chain && ID < FirstSelectorID) {
3437 // Selector already exists. Did it change?
3438 bool changed = false;
3439 for (ObjCMethodList *M = &Data.Instance;
3440 !changed && M && M->getMethod(); M = M->getNext()) {
3441 if (!M->getMethod()->isFromASTFile())
3442 changed = true;
3443 }
3444 for (ObjCMethodList *M = &Data.Factory; !changed && M && M->getMethod();
3445 M = M->getNext()) {
3446 if (!M->getMethod()->isFromASTFile())
3447 changed = true;
3448 }
3449 if (!changed)
3450 continue;
3451 } else if (Data.Instance.getMethod() || Data.Factory.getMethod()) {
3452 // A new method pool entry.
3453 ++NumTableEntries;
3454 }
3455 Generator.insert(S, Data, Trait);
3456 }
3457
3458 // Create the on-disk hash table in a buffer.
3459 SmallString<4096> MethodPool;
3460 uint32_t BucketOffset;
3461 {
3462 using namespace llvm::support;
3463
3464 ASTMethodPoolTrait Trait(*this);
3465 llvm::raw_svector_ostream Out(MethodPool);
3466 // Make sure that no bucket is at offset 0
3467 endian::write<uint32_t>(Out, 0, little);
3468 BucketOffset = Generator.Emit(Out, Trait);
3469 }
3470
3471 // Create a blob abbreviation
3472 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3473 Abbrev->Add(BitCodeAbbrevOp(METHOD_POOL));
3474 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3475 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3476 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3477 unsigned MethodPoolAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3478
3479 // Write the method pool
3480 {
3481 RecordData::value_type Record[] = {METHOD_POOL, BucketOffset,
3482 NumTableEntries};
3483 Stream.EmitRecordWithBlob(MethodPoolAbbrev, Record, MethodPool);
3484 }
3485
3486 // Create a blob abbreviation for the selector table offsets.
3487 Abbrev = std::make_shared<BitCodeAbbrev>();
3488 Abbrev->Add(BitCodeAbbrevOp(SELECTOR_OFFSETS));
3489 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size
3490 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3491 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3492 unsigned SelectorOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3493
3494 // Write the selector offsets table.
3495 {
3496 RecordData::value_type Record[] = {
3497 SELECTOR_OFFSETS, SelectorOffsets.size(),
3498 FirstSelectorID - NUM_PREDEF_SELECTOR_IDS};
3499 Stream.EmitRecordWithBlob(SelectorOffsetAbbrev, Record,
3500 bytes(SelectorOffsets));
3501 }
3502 }
3503}
3504
3505/// Write the selectors referenced in @selector expression into AST file.
3506void ASTWriter::WriteReferencedSelectorsPool(Sema &SemaRef) {
3507 using namespace llvm;
3508
3509 if (SemaRef.ReferencedSelectors.empty())
3510 return;
3511
3512 RecordData Record;
3513 ASTRecordWriter Writer(*this, Record);
3514
3515 // Note: this writes out all references even for a dependent AST. But it is
3516 // very tricky to fix, and given that @selector shouldn't really appear in
3517 // headers, probably not worth it. It's not a correctness issue.
3518 for (auto &SelectorAndLocation : SemaRef.ReferencedSelectors) {
3519 Selector Sel = SelectorAndLocation.first;
3520 SourceLocation Loc = SelectorAndLocation.second;
3521 Writer.AddSelectorRef(Sel);
3522 Writer.AddSourceLocation(Loc);
3523 }
3524 Writer.Emit(REFERENCED_SELECTOR_POOL);
3525}
3526
3527//===----------------------------------------------------------------------===//
3528// Identifier Table Serialization
3529//===----------------------------------------------------------------------===//
3530
3531/// Determine the declaration that should be put into the name lookup table to
3532/// represent the given declaration in this module. This is usually D itself,
3533/// but if D was imported and merged into a local declaration, we want the most
3534/// recent local declaration instead. The chosen declaration will be the most
3535/// recent declaration in any module that imports this one.
3536static NamedDecl *getDeclForLocalLookup(const LangOptions &LangOpts,
3537 NamedDecl *D) {
3538 if (!LangOpts.Modules || !D->isFromASTFile())
3539 return D;
3540
3541 if (Decl *Redecl = D->getPreviousDecl()) {
3542 // For Redeclarable decls, a prior declaration might be local.
3543 for (; Redecl; Redecl = Redecl->getPreviousDecl()) {
3544 // If we find a local decl, we're done.
3545 if (!Redecl->isFromASTFile()) {
3546 // Exception: in very rare cases (for injected-class-names), not all
3547 // redeclarations are in the same semantic context. Skip ones in a
3548 // different context. They don't go in this lookup table at all.
3549 if (!Redecl->getDeclContext()->getRedeclContext()->Equals(
3550 D->getDeclContext()->getRedeclContext()))
3551 continue;
3552 return cast<NamedDecl>(Redecl);
3553 }
3554
3555 // If we find a decl from a (chained-)PCH stop since we won't find a
3556 // local one.
3557 if (Redecl->getOwningModuleID() == 0)
3558 break;
3559 }
3560 } else if (Decl *First = D->getCanonicalDecl()) {
3561 // For Mergeable decls, the first decl might be local.
3562 if (!First->isFromASTFile())
3563 return cast<NamedDecl>(First);
3564 }
3565
3566 // All declarations are imported. Our most recent declaration will also be
3567 // the most recent one in anyone who imports us.
3568 return D;
3569}
3570
3571namespace {
3572
3573class ASTIdentifierTableTrait {
3574 ASTWriter &Writer;
3575 Preprocessor &PP;
3576 IdentifierResolver &IdResolver;
3577 bool IsModule;
3578 bool NeedDecls;
3579 ASTWriter::RecordData *InterestingIdentifierOffsets;
3580
3581 /// Determines whether this is an "interesting" identifier that needs a
3582 /// full IdentifierInfo structure written into the hash table. Notably, this
3583 /// doesn't check whether the name has macros defined; use PublicMacroIterator
3584 /// to check that.
3585 bool isInterestingIdentifier(const IdentifierInfo *II, uint64_t MacroOffset) {
3586 if (MacroOffset ||
3587 II->isPoisoned() ||
3588 (IsModule ? II->hasRevertedBuiltin() : II->getObjCOrBuiltinID()) ||
3589 II->hasRevertedTokenIDToIdentifier() ||
3590 (NeedDecls && II->getFETokenInfo()))
3591 return true;
3592
3593 return false;
3594 }
3595
3596public:
3597 using key_type = IdentifierInfo *;
3598 using key_type_ref = key_type;
3599
3600 using data_type = IdentID;
3601 using data_type_ref = data_type;
3602
3603 using hash_value_type = unsigned;
3604 using offset_type = unsigned;
3605
3606 ASTIdentifierTableTrait(ASTWriter &Writer, Preprocessor &PP,
3607 IdentifierResolver &IdResolver, bool IsModule,
3608 ASTWriter::RecordData *InterestingIdentifierOffsets)
3609 : Writer(Writer), PP(PP), IdResolver(IdResolver), IsModule(IsModule),
3610 NeedDecls(!IsModule || !Writer.getLangOpts().CPlusPlus),
3611 InterestingIdentifierOffsets(InterestingIdentifierOffsets) {}
3612
3613 bool needDecls() const { return NeedDecls; }
3614
3615 static hash_value_type ComputeHash(const IdentifierInfo* II) {
3616 return llvm::djbHash(II->getName());
3617 }
3618
3619 bool isInterestingIdentifier(const IdentifierInfo *II) {
3620 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3621 return isInterestingIdentifier(II, MacroOffset);
3622 }
3623
3624 bool isInterestingNonMacroIdentifier(const IdentifierInfo *II) {
3625 return isInterestingIdentifier(II, 0);
3626 }
3627
3628 std::pair<unsigned, unsigned>
3629 EmitKeyDataLength(raw_ostream& Out, IdentifierInfo* II, IdentID ID) {
3630 unsigned KeyLen = II->getLength() + 1;
3631 unsigned DataLen = 4; // 4 bytes for the persistent ID << 1
3632 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3633 if (isInterestingIdentifier(II, MacroOffset)) {
3634 DataLen += 2; // 2 bytes for builtin ID
3635 DataLen += 2; // 2 bytes for flags
3636 if (MacroOffset)
3637 DataLen += 4; // MacroDirectives offset.
3638
3639 if (NeedDecls) {
3640 for (IdentifierResolver::iterator D = IdResolver.begin(II),
3641 DEnd = IdResolver.end();
3642 D != DEnd; ++D)
3643 DataLen += 4;
3644 }
3645 }
3646
3647 using namespace llvm::support;
3648
3649 endian::Writer LE(Out, little);
3650
3651 assert((uint16_t)DataLen == DataLen && (uint16_t)KeyLen == KeyLen)(((uint16_t)DataLen == DataLen && (uint16_t)KeyLen ==
KeyLen) ? static_cast<void> (0) : __assert_fail ("(uint16_t)DataLen == DataLen && (uint16_t)KeyLen == KeyLen"
, "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3651, __PRETTY_FUNCTION__))
;
3652 LE.write<uint16_t>(DataLen);
3653 // We emit the key length after the data length so that every
3654 // string is preceded by a 16-bit length. This matches the PTH
3655 // format for storing identifiers.
3656 LE.write<uint16_t>(KeyLen);
3657 return std::make_pair(KeyLen, DataLen);
3658 }
3659
3660 void EmitKey(raw_ostream& Out, const IdentifierInfo* II,
3661 unsigned KeyLen) {
3662 // Record the location of the key data. This is used when generating
3663 // the mapping from persistent IDs to strings.
3664 Writer.SetIdentifierOffset(II, Out.tell());
3665
3666 // Emit the offset of the key/data length information to the interesting
3667 // identifiers table if necessary.
3668 if (InterestingIdentifierOffsets && isInterestingIdentifier(II))
3669 InterestingIdentifierOffsets->push_back(Out.tell() - 4);
3670
3671 Out.write(II->getNameStart(), KeyLen);
3672 }
3673
3674 void EmitData(raw_ostream& Out, IdentifierInfo* II,
3675 IdentID ID, unsigned) {
3676 using namespace llvm::support;
3677
3678 endian::Writer LE(Out, little);
3679
3680 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3681 if (!isInterestingIdentifier(II, MacroOffset)) {
3682 LE.write<uint32_t>(ID << 1);
3683 return;
3684 }
3685
3686 LE.write<uint32_t>((ID << 1) | 0x01);
3687 uint32_t Bits = (uint32_t)II->getObjCOrBuiltinID();
3688 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3688, __PRETTY_FUNCTION__))
;
3689 LE.write<uint16_t>(Bits);
3690 Bits = 0;
3691 bool HadMacroDefinition = MacroOffset != 0;
3692 Bits = (Bits << 1) | unsigned(HadMacroDefinition);
3693 Bits = (Bits << 1) | unsigned(II->isExtensionToken());
3694 Bits = (Bits << 1) | unsigned(II->isPoisoned());
3695 Bits = (Bits << 1) | unsigned(II->hasRevertedBuiltin());
3696 Bits = (Bits << 1) | unsigned(II->hasRevertedTokenIDToIdentifier());
3697 Bits = (Bits << 1) | unsigned(II->isCPlusPlusOperatorKeyword());
3698 LE.write<uint16_t>(Bits);
3699
3700 if (HadMacroDefinition)
3701 LE.write<uint32_t>(MacroOffset);
3702
3703 if (NeedDecls) {
3704 // Emit the declaration IDs in reverse order, because the
3705 // IdentifierResolver provides the declarations as they would be
3706 // visible (e.g., the function "stat" would come before the struct
3707 // "stat"), but the ASTReader adds declarations to the end of the list
3708 // (so we need to see the struct "stat" before the function "stat").
3709 // Only emit declarations that aren't from a chained PCH, though.
3710 SmallVector<NamedDecl *, 16> Decls(IdResolver.begin(II),
3711 IdResolver.end());
3712 for (SmallVectorImpl<NamedDecl *>::reverse_iterator D = Decls.rbegin(),
3713 DEnd = Decls.rend();
3714 D != DEnd; ++D)
3715 LE.write<uint32_t>(
3716 Writer.getDeclID(getDeclForLocalLookup(PP.getLangOpts(), *D)));
3717 }
3718 }
3719};
3720
3721} // namespace
3722
3723/// Write the identifier table into the AST file.
3724///
3725/// The identifier table consists of a blob containing string data
3726/// (the actual identifiers themselves) and a separate "offsets" index
3727/// that maps identifier IDs to locations within the blob.
3728void ASTWriter::WriteIdentifierTable(Preprocessor &PP,
3729 IdentifierResolver &IdResolver,
3730 bool IsModule) {
3731 using namespace llvm;
3732
3733 RecordData InterestingIdents;
3734
3735 // Create and write out the blob that contains the identifier
3736 // strings.
3737 {
3738 llvm::OnDiskChainedHashTableGenerator<ASTIdentifierTableTrait> Generator;
3739 ASTIdentifierTableTrait Trait(
3740 *this, PP, IdResolver, IsModule,
3741 (getLangOpts().CPlusPlus && IsModule) ? &InterestingIdents : nullptr);
3742
3743 // Look for any identifiers that were named while processing the
3744 // headers, but are otherwise not needed. We add these to the hash
3745 // table to enable checking of the predefines buffer in the case
3746 // where the user adds new macro definitions when building the AST
3747 // file.
3748 SmallVector<const IdentifierInfo *, 128> IIs;
3749 for (const auto &ID : PP.getIdentifierTable())
3750 IIs.push_back(ID.second);
3751 // Sort the identifiers lexicographically before getting them references so
3752 // that their order is stable.
3753 llvm::sort(IIs, llvm::deref<std::less<>>());
3754 for (const IdentifierInfo *II : IIs)
3755 if (Trait.isInterestingNonMacroIdentifier(II))
3756 getIdentifierRef(II);
3757
3758 // Create the on-disk hash table representation. We only store offsets
3759 // for identifiers that appear here for the first time.
3760 IdentifierOffsets.resize(NextIdentID - FirstIdentID);
3761 for (auto IdentIDPair : IdentifierIDs) {
3762 auto *II = const_cast<IdentifierInfo *>(IdentIDPair.first);
3763 IdentID ID = IdentIDPair.second;
3764 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3764, __PRETTY_FUNCTION__))
;
3765 // Write out identifiers if either the ID is local or the identifier has
3766 // changed since it was loaded.
3767 if (ID >= FirstIdentID || !Chain || !II->isFromAST()
3768 || II->hasChangedSinceDeserialization() ||
3769 (Trait.needDecls() &&
3770 II->hasFETokenInfoChangedSinceDeserialization()))
3771 Generator.insert(II, ID, Trait);
3772 }
3773
3774 // Create the on-disk hash table in a buffer.
3775 SmallString<4096> IdentifierTable;
3776 uint32_t BucketOffset;
3777 {
3778 using namespace llvm::support;
3779
3780 llvm::raw_svector_ostream Out(IdentifierTable);
3781 // Make sure that no bucket is at offset 0
3782 endian::write<uint32_t>(Out, 0, little);
3783 BucketOffset = Generator.Emit(Out, Trait);
3784 }
3785
3786 // Create a blob abbreviation
3787 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3788 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_TABLE));
3789 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3790 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3791 unsigned IDTableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3792
3793 // Write the identifier table
3794 RecordData::value_type Record[] = {IDENTIFIER_TABLE, BucketOffset};
3795 Stream.EmitRecordWithBlob(IDTableAbbrev, Record, IdentifierTable);
3796 }
3797
3798 // Write the offsets table for identifier IDs.
3799 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3800 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_OFFSET));
3801 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of identifiers
3802 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3803 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3804 unsigned IdentifierOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3805
3806#ifndef NDEBUG
3807 for (unsigned I = 0, N = IdentifierOffsets.size(); I != N; ++I)
3808 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3808, __PRETTY_FUNCTION__))
;
3809#endif
3810
3811 RecordData::value_type Record[] = {IDENTIFIER_OFFSET,
3812 IdentifierOffsets.size(),
3813 FirstIdentID - NUM_PREDEF_IDENT_IDS};
3814 Stream.EmitRecordWithBlob(IdentifierOffsetAbbrev, Record,
3815 bytes(IdentifierOffsets));
3816
3817 // In C++, write the list of interesting identifiers (those that are
3818 // defined as macros, poisoned, or similar unusual things).
3819 if (!InterestingIdents.empty())
3820 Stream.EmitRecord(INTERESTING_IDENTIFIERS, InterestingIdents);
3821}
3822
3823//===----------------------------------------------------------------------===//
3824// DeclContext's Name Lookup Table Serialization
3825//===----------------------------------------------------------------------===//
3826
3827namespace {
3828
3829// Trait used for the on-disk hash table used in the method pool.
3830class ASTDeclContextNameLookupTrait {
3831 ASTWriter &Writer;
3832 llvm::SmallVector<DeclID, 64> DeclIDs;
3833
3834public:
3835 using key_type = DeclarationNameKey;
3836 using key_type_ref = key_type;
3837
3838 /// A start and end index into DeclIDs, representing a sequence of decls.
3839 using data_type = std::pair<unsigned, unsigned>;
3840 using data_type_ref = const data_type &;
3841
3842 using hash_value_type = unsigned;
3843 using offset_type = unsigned;
3844
3845 explicit ASTDeclContextNameLookupTrait(ASTWriter &Writer) : Writer(Writer) {}
3846
3847 template<typename Coll>
3848 data_type getData(const Coll &Decls) {
3849 unsigned Start = DeclIDs.size();
3850 for (NamedDecl *D : Decls) {
3851 DeclIDs.push_back(
3852 Writer.GetDeclRef(getDeclForLocalLookup(Writer.getLangOpts(), D)));
3853 }
3854 return std::make_pair(Start, DeclIDs.size());
3855 }
3856
3857 data_type ImportData(const reader::ASTDeclContextNameLookupTrait::data_type &FromReader) {
3858 unsigned Start = DeclIDs.size();
3859 for (auto ID : FromReader)
3860 DeclIDs.push_back(ID);
3861 return std::make_pair(Start, DeclIDs.size());
3862 }
3863
3864 static bool EqualKey(key_type_ref a, key_type_ref b) {
3865 return a == b;
3866 }
3867
3868 hash_value_type ComputeHash(DeclarationNameKey Name) {
3869 return Name.getHash();
3870 }
3871
3872 void EmitFileRef(raw_ostream &Out, ModuleFile *F) const {
3873 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3874, __PRETTY_FUNCTION__))
3874 "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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3874, __PRETTY_FUNCTION__))
;
3875
3876 using namespace llvm::support;
3877
3878 endian::write<uint32_t>(Out, Writer.getChain()->getModuleFileID(F), little);
3879 }
3880
3881 std::pair<unsigned, unsigned> EmitKeyDataLength(raw_ostream &Out,
3882 DeclarationNameKey Name,
3883 data_type_ref Lookup) {
3884 using namespace llvm::support;
3885
3886 endian::Writer LE(Out, little);
3887 unsigned KeyLen = 1;
3888 switch (Name.getKind()) {
3889 case DeclarationName::Identifier:
3890 case DeclarationName::ObjCZeroArgSelector:
3891 case DeclarationName::ObjCOneArgSelector:
3892 case DeclarationName::ObjCMultiArgSelector:
3893 case DeclarationName::CXXLiteralOperatorName:
3894 case DeclarationName::CXXDeductionGuideName:
3895 KeyLen += 4;
3896 break;
3897 case DeclarationName::CXXOperatorName:
3898 KeyLen += 1;
3899 break;
3900 case DeclarationName::CXXConstructorName:
3901 case DeclarationName::CXXDestructorName:
3902 case DeclarationName::CXXConversionFunctionName:
3903 case DeclarationName::CXXUsingDirective:
3904 break;
3905 }
3906 LE.write<uint16_t>(KeyLen);
3907
3908 // 4 bytes for each DeclID.
3909 unsigned DataLen = 4 * (Lookup.second - Lookup.first);
3910 assert(uint16_t(DataLen) == DataLen &&((uint16_t(DataLen) == DataLen && "too many decls for serialized lookup result"
) ? static_cast<void> (0) : __assert_fail ("uint16_t(DataLen) == DataLen && \"too many decls for serialized lookup result\""
, "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3911, __PRETTY_FUNCTION__))
3911 "too many decls for serialized lookup result")((uint16_t(DataLen) == DataLen && "too many decls for serialized lookup result"
) ? static_cast<void> (0) : __assert_fail ("uint16_t(DataLen) == DataLen && \"too many decls for serialized lookup result\""
, "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3911, __PRETTY_FUNCTION__))
;
3912 LE.write<uint16_t>(DataLen);
3913
3914 return std::make_pair(KeyLen, DataLen);
3915 }
3916
3917 void EmitKey(raw_ostream &Out, DeclarationNameKey Name, unsigned) {
3918 using namespace llvm::support;
3919
3920 endian::Writer LE(Out, little);
3921 LE.write<uint8_t>(Name.getKind());
3922 switch (Name.getKind()) {
3923 case DeclarationName::Identifier:
3924 case DeclarationName::CXXLiteralOperatorName:
3925 case DeclarationName::CXXDeductionGuideName:
3926 LE.write<uint32_t>(Writer.getIdentifierRef(Name.getIdentifier()));
3927 return;
3928 case DeclarationName::ObjCZeroArgSelector:
3929 case DeclarationName::ObjCOneArgSelector:
3930 case DeclarationName::ObjCMultiArgSelector:
3931 LE.write<uint32_t>(Writer.getSelectorRef(Name.getSelector()));
3932 return;
3933 case DeclarationName::CXXOperatorName:
3934 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3935, __PRETTY_FUNCTION__))
3935 "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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3935, __PRETTY_FUNCTION__))
;
3936 LE.write<uint8_t>(Name.getOperatorKind());
3937 return;
3938 case DeclarationName::CXXConstructorName:
3939 case DeclarationName::CXXDestructorName:
3940 case DeclarationName::CXXConversionFunctionName:
3941 case DeclarationName::CXXUsingDirective:
3942 return;
3943 }
3944
3945 llvm_unreachable("Invalid name kind?")::llvm::llvm_unreachable_internal("Invalid name kind?", "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3945)
;
3946 }
3947
3948 void EmitData(raw_ostream &Out, key_type_ref, data_type Lookup,
3949 unsigned DataLen) {
3950 using namespace llvm::support;
3951
3952 endian::Writer LE(Out, little);
3953 uint64_t Start = Out.tell(); (void)Start;
3954 for (unsigned I = Lookup.first, N = Lookup.second; I != N; ++I)
3955 LE.write<uint32_t>(DeclIDs[I]);
3956 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3956, __PRETTY_FUNCTION__))
;
3957 }
3958};
3959
3960} // namespace
3961
3962bool ASTWriter::isLookupResultExternal(StoredDeclsList &Result,
3963 DeclContext *DC) {
3964 return Result.hasExternalDecls() &&
3965 DC->hasNeedToReconcileExternalVisibleStorage();
3966}
3967
3968bool ASTWriter::isLookupResultEntirelyExternal(StoredDeclsList &Result,
3969 DeclContext *DC) {
3970 for (auto *D : Result.getLookupResult())
3971 if (!getDeclForLocalLookup(getLangOpts(), D)->isFromASTFile())
3972 return false;
3973
3974 return true;
3975}
3976
3977void
3978ASTWriter::GenerateNameLookupTable(const DeclContext *ConstDC,
3979 llvm::SmallVectorImpl<char> &LookupTable) {
3980 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3982, __PRETTY_FUNCTION__))
3981 !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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3982, __PRETTY_FUNCTION__))
3982 "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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3982, __PRETTY_FUNCTION__))
;
3983
3984 // FIXME: We need to build the lookups table, which is logically const.
3985 auto *DC = const_cast<DeclContext*>(ConstDC);
3986 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3986, __PRETTY_FUNCTION__))
;
3987
3988 // Create the on-disk hash table representation.
3989 MultiOnDiskHashTableGenerator<reader::ASTDeclContextNameLookupTrait,
3990 ASTDeclContextNameLookupTrait> Generator;
3991 ASTDeclContextNameLookupTrait Trait(*this);
3992
3993 // The first step is to collect the declaration names which we need to
3994 // serialize into the name lookup table, and to collect them in a stable
3995 // order.
3996 SmallVector<DeclarationName, 16> Names;
3997
3998 // We also build up small sets of the constructor and conversion function
3999 // names which are visible.
4000 llvm::SmallSet<DeclarationName, 8> ConstructorNameSet, ConversionNameSet;
4001
4002 for (auto &Lookup : *DC->buildLookup()) {
4003 auto &Name = Lookup.first;
4004 auto &Result = Lookup.second;
4005
4006 // If there are no local declarations in our lookup result, we
4007 // don't need to write an entry for the name at all. If we can't
4008 // write out a lookup set without performing more deserialization,
4009 // just skip this entry.
4010 if (isLookupResultExternal(Result, DC) &&
4011 isLookupResultEntirelyExternal(Result, DC))
4012 continue;
4013
4014 // We also skip empty results. If any of the results could be external and
4015 // the currently available results are empty, then all of the results are
4016 // external and we skip it above. So the only way we get here with an empty
4017 // results is when no results could have been external *and* we have
4018 // external results.
4019 //
4020 // FIXME: While we might want to start emitting on-disk entries for negative
4021 // lookups into a decl context as an optimization, today we *have* to skip
4022 // them because there are names with empty lookup results in decl contexts
4023 // which we can't emit in any stable ordering: we lookup constructors and
4024 // conversion functions in the enclosing namespace scope creating empty
4025 // results for them. This in almost certainly a bug in Clang's name lookup,
4026 // but that is likely to be hard or impossible to fix and so we tolerate it
4027 // here by omitting lookups with empty results.
4028 if (Lookup.second.getLookupResult().empty())
4029 continue;
4030
4031 switch (Lookup.first.getNameKind()) {
4032 default:
4033 Names.push_back(Lookup.first);
4034 break;
4035
4036 case DeclarationName::CXXConstructorName:
4037 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4038, __PRETTY_FUNCTION__))
4038 "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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4038, __PRETTY_FUNCTION__))
;
4039 ConstructorNameSet.insert(Name);
4040 break;
4041
4042 case DeclarationName::CXXConversionFunctionName:
4043 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4044, __PRETTY_FUNCTION__))
4044 "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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4044, __PRETTY_FUNCTION__))
;
4045 ConversionNameSet.insert(Name);
4046 break;
4047 }
4048 }
4049
4050 // Sort the names into a stable order.
4051 llvm::sort(Names);
4052
4053 if (auto *D = dyn_cast<CXXRecordDecl>(DC)) {
4054 // We need to establish an ordering of constructor and conversion function
4055 // names, and they don't have an intrinsic ordering.
4056
4057 // First we try the easy case by forming the current context's constructor
4058 // name and adding that name first. This is a very useful optimization to
4059 // avoid walking the lexical declarations in many cases, and it also
4060 // handles the only case where a constructor name can come from some other
4061 // lexical context -- when that name is an implicit constructor merged from
4062 // another declaration in the redecl chain. Any non-implicit constructor or
4063 // conversion function which doesn't occur in all the lexical contexts
4064 // would be an ODR violation.
4065 auto ImplicitCtorName = Context->DeclarationNames.getCXXConstructorName(
4066 Context->getCanonicalType(Context->getRecordType(D)));
4067 if (ConstructorNameSet.erase(ImplicitCtorName))
4068 Names.push_back(ImplicitCtorName);
4069
4070 // If we still have constructors or conversion functions, we walk all the
4071 // names in the decl and add the constructors and conversion functions
4072 // which are visible in the order they lexically occur within the context.
4073 if (!ConstructorNameSet.empty() || !ConversionNameSet.empty())
4074 for (Decl *ChildD : cast<CXXRecordDecl>(DC)->decls())
4075 if (auto *ChildND = dyn_cast<NamedDecl>(ChildD)) {
4076 auto Name = ChildND->getDeclName();
4077 switch (Name.getNameKind()) {
4078 default:
4079 continue;
4080
4081 case DeclarationName::CXXConstructorName:
4082 if (ConstructorNameSet.erase(Name))
4083 Names.push_back(Name);
4084 break;
4085
4086 case DeclarationName::CXXConversionFunctionName:
4087 if (ConversionNameSet.erase(Name))
4088 Names.push_back(Name);
4089 break;
4090 }
4091
4092 if (ConstructorNameSet.empty() && ConversionNameSet.empty())
4093 break;
4094 }
4095
4096 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4098, __PRETTY_FUNCTION__))
4097 "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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4098, __PRETTY_FUNCTION__))
4098 "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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4098, __PRETTY_FUNCTION__))
;
4099 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4101, __PRETTY_FUNCTION__))
4100 "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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4101, __PRETTY_FUNCTION__))
4101 "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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4101, __PRETTY_FUNCTION__))
;
4102 }
4103
4104 // Next we need to do a lookup with each name into this decl context to fully
4105 // populate any results from external sources. We don't actually use the
4106 // results of these lookups because we only want to use the results after all
4107 // results have been loaded and the pointers into them will be stable.
4108 for (auto &Name : Names)
4109 DC->lookup(Name);
4110
4111 // Now we need to insert the results for each name into the hash table. For
4112 // constructor names and conversion function names, we actually need to merge
4113 // all of the results for them into one list of results each and insert
4114 // those.
4115 SmallVector<NamedDecl *, 8> ConstructorDecls;
4116 SmallVector<NamedDecl *, 8> ConversionDecls;
4117
4118 // Now loop over the names, either inserting them or appending for the two
4119 // special cases.
4120 for (auto &Name : Names) {
4121 DeclContext::lookup_result Result = DC->noload_lookup(Name);
4122
4123 switch (Name.getNameKind()) {
4124 default:
4125 Generator.insert(Name, Trait.getData(Result), Trait);
4126 break;
4127
4128 case DeclarationName::CXXConstructorName:
4129 ConstructorDecls.append(Result.begin(), Result.end());
4130 break;
4131
4132 case DeclarationName::CXXConversionFunctionName:
4133 ConversionDecls.append(Result.begin(), Result.end());
4134 break;
4135 }
4136 }
4137
4138 // Handle our two special cases if we ended up having any. We arbitrarily use
4139 // the first declaration's name here because the name itself isn't part of
4140 // the key, only the kind of name is used.
4141 if (!ConstructorDecls.empty())
4142 Generator.insert(ConstructorDecls.front()->getDeclName(),
4143 Trait.getData(ConstructorDecls), Trait);
4144 if (!ConversionDecls.empty())
4145 Generator.insert(ConversionDecls.front()->getDeclName(),
4146 Trait.getData(ConversionDecls), Trait);
4147
4148 // Create the on-disk hash table. Also emit the existing imported and
4149 // merged table if there is one.
4150 auto *Lookups = Chain ? Chain->getLoadedLookupTables(DC) : nullptr;
4151 Generator.emit(LookupTable, Trait, Lookups ? &Lookups->Table : nullptr);
4152}
4153
4154/// Write the block containing all of the declaration IDs
4155/// visible from the given DeclContext.
4156///
4157/// \returns the offset of the DECL_CONTEXT_VISIBLE block within the
4158/// bitstream, or 0 if no block was written.
4159uint64_t ASTWriter::WriteDeclContextVisibleBlock(ASTContext &Context,
4160 DeclContext *DC) {
4161 // If we imported a key declaration of this namespace, write the visible
4162 // lookup results as an update record for it rather than including them
4163 // on this declaration. We will only look at key declarations on reload.
4164 if (isa<NamespaceDecl>(DC) && Chain &&
4165 Chain->getKeyDeclaration(cast<Decl>(DC))->isFromASTFile()) {
4166 // Only do this once, for the first local declaration of the namespace.
4167 for (auto *Prev = cast<NamespaceDecl>(DC)->getPreviousDecl(); Prev;
4168 Prev = Prev->getPreviousDecl())
4169 if (!Prev->isFromASTFile())
4170 return 0;
4171
4172 // Note that we need to emit an update record for the primary context.
4173 UpdatedDeclContexts.insert(DC->getPrimaryContext());
4174
4175 // Make sure all visible decls are written. They will be recorded later. We
4176 // do this using a side data structure so we can sort the names into
4177 // a deterministic order.
4178 StoredDeclsMap *Map = DC->getPrimaryContext()->buildLookup();
4179 SmallVector<std::pair<DeclarationName, DeclContext::lookup_result>, 16>
4180 LookupResults;
4181 if (Map) {
4182 LookupResults.reserve(Map->size());
4183 for (auto &Entry : *Map)
4184 LookupResults.push_back(
4185 std::make_pair(Entry.first, Entry.second.getLookupResult()));
4186 }
4187
4188 llvm::sort(LookupResults, llvm::less_first());
4189 for (auto &NameAndResult : LookupResults) {
4190 DeclarationName Name = NameAndResult.first;
4191 DeclContext::lookup_result Result = NameAndResult.second;
4192 if (Name.getNameKind() == DeclarationName::CXXConstructorName ||
4193 Name.getNameKind() == DeclarationName::CXXConversionFunctionName) {
4194 // We have to work around a name lookup bug here where negative lookup
4195 // results for these names get cached in namespace lookup tables (these
4196 // names should never be looked up in a namespace).
4197 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4198, __PRETTY_FUNCTION__))
4198 "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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4198, __PRETTY_FUNCTION__))
;
4199 continue;
4200 }
4201
4202 for (NamedDecl *ND : Result)
4203 if (!ND->isFromASTFile())
4204 GetDeclRef(ND);
4205 }
4206
4207 return 0;
4208 }
4209
4210 if (DC->getPrimaryContext() != DC)
4211 return 0;
4212
4213 // Skip contexts which don't support name lookup.
4214 if (!DC->isLookupContext())
4215 return 0;
4216
4217 // If not in C++, we perform name lookup for the translation unit via the
4218 // IdentifierInfo chains, don't bother to build a visible-declarations table.
4219 if (DC->isTranslationUnit() && !Context.getLangOpts().CPlusPlus)
4220 return 0;
4221
4222 // Serialize the contents of the mapping used for lookup. Note that,
4223 // although we have two very different code paths, the serialized
4224 // representation is the same for both cases: a declaration name,
4225 // followed by a size, followed by references to the visible
4226 // declarations that have that name.
4227 uint64_t Offset = Stream.GetCurrentBitNo();
4228 StoredDeclsMap *Map = DC->buildLookup();
4229 if (!Map || Map->empty())
4230 return 0;
4231
4232 // Create the on-disk hash table in a buffer.
4233 SmallString<4096> LookupTable;
4234 GenerateNameLookupTable(DC, LookupTable);
4235
4236 // Write the lookup table
4237 RecordData::value_type Record[] = {DECL_CONTEXT_VISIBLE};
4238 Stream.EmitRecordWithBlob(DeclContextVisibleLookupAbbrev, Record,
4239 LookupTable);
4240 ++NumVisibleDeclContexts;
4241 return Offset;
4242}
4243
4244/// Write an UPDATE_VISIBLE block for the given context.
4245///
4246/// UPDATE_VISIBLE blocks contain the declarations that are added to an existing
4247/// DeclContext in a dependent AST file. As such, they only exist for the TU
4248/// (in C++), for namespaces, and for classes with forward-declared unscoped
4249/// enumeration members (in C++11).
4250void ASTWriter::WriteDeclContextVisibleUpdate(const DeclContext *DC) {
4251 StoredDeclsMap *Map = DC->getLookupPtr();
4252 if (!Map || Map->empty())
4253 return;
4254
4255 // Create the on-disk hash table in a buffer.
4256 SmallString<4096> LookupTable;
4257 GenerateNameLookupTable(DC, LookupTable);
4258
4259 // If we're updating a namespace, select a key declaration as the key for the
4260 // update record; those are the only ones that will be checked on reload.
4261 if (isa<NamespaceDecl>(DC))
4262 DC = cast<DeclContext>(Chain->getKeyDeclaration(cast<Decl>(DC)));
4263
4264 // Write the lookup table
4265 RecordData::value_type Record[] = {UPDATE_VISIBLE, getDeclID(cast<Decl>(DC))};
4266 Stream.EmitRecordWithBlob(UpdateVisibleAbbrev, Record, LookupTable);
4267}
4268
4269/// Write an FP_PRAGMA_OPTIONS block for the given FPOptions.
4270void ASTWriter::WriteFPPragmaOptions(const FPOptions &Opts) {
4271 RecordData::value_type Record[] = {Opts.getInt()};
4272 Stream.EmitRecord(FP_PRAGMA_OPTIONS, Record);
4273}
4274
4275/// Write an OPENCL_EXTENSIONS block for the given OpenCLOptions.
4276void ASTWriter::WriteOpenCLExtensions(Sema &SemaRef) {
4277 if (!SemaRef.Context.getLangOpts().OpenCL)
4278 return;
4279
4280 const OpenCLOptions &Opts = SemaRef.getOpenCLOptions();
4281 RecordData Record;
4282 for (const auto &I:Opts.OptMap) {
4283 AddString(I.getKey(), Record);
4284 auto V = I.getValue();
4285 Record.push_back(V.Supported ? 1 : 0);
4286 Record.push_back(V.Enabled ? 1 : 0);
4287 Record.push_back(V.Avail);
4288 Record.push_back(V.Core);
4289 }
4290 Stream.EmitRecord(OPENCL_EXTENSIONS, Record);
4291}
4292
4293void ASTWriter::WriteOpenCLExtensionTypes(Sema &SemaRef) {
4294 if (!SemaRef.Context.getLangOpts().OpenCL)
4295 return;
4296
4297 // Sort the elements of the map OpenCLTypeExtMap by TypeIDs,
4298 // without copying them.
4299 const llvm::DenseMap<const Type *, std::set<std::string>> &OpenCLTypeExtMap =
4300 SemaRef.OpenCLTypeExtMap;
4301 using ElementTy = std::pair<TypeID, const std::set<std::string> *>;
4302 llvm::SmallVector<ElementTy, 8> StableOpenCLTypeExtMap;
4303 StableOpenCLTypeExtMap.reserve(OpenCLTypeExtMap.size());
4304
4305 for (const auto &I : OpenCLTypeExtMap)
4306 StableOpenCLTypeExtMap.emplace_back(
4307 getTypeID(I.first->getCanonicalTypeInternal()), &I.second);
4308
4309 auto CompareByTypeID = [](const ElementTy &E1, const ElementTy &E2) -> bool {
4310 return E1.first < E2.first;
4311 };
4312 llvm::sort(StableOpenCLTypeExtMap, CompareByTypeID);
4313
4314 RecordData Record;
4315 for (const ElementTy &E : StableOpenCLTypeExtMap) {
4316 Record.push_back(E.first); // TypeID
4317 const std::set<std::string> *ExtSet = E.second;
4318 Record.push_back(static_cast<unsigned>(ExtSet->size()));
4319 for (const std::string &Ext : *ExtSet)
4320 AddString(Ext, Record);
4321 }
4322
4323 Stream.EmitRecord(OPENCL_EXTENSION_TYPES, Record);
4324}
4325
4326void ASTWriter::WriteOpenCLExtensionDecls(Sema &SemaRef) {
4327 if (!SemaRef.Context.getLangOpts().OpenCL)
4328 return;
4329
4330 // Sort the elements of the map OpenCLDeclExtMap by DeclIDs,
4331 // without copying them.
4332 const llvm::DenseMap<const Decl *, std::set<std::string>> &OpenCLDeclExtMap =
4333 SemaRef.OpenCLDeclExtMap;
4334 using ElementTy = std::pair<DeclID, const std::set<std::string> *>;
4335 llvm::SmallVector<ElementTy, 8> StableOpenCLDeclExtMap;
4336 StableOpenCLDeclExtMap.reserve(OpenCLDeclExtMap.size());
4337
4338 for (const auto &I : OpenCLDeclExtMap)
4339 StableOpenCLDeclExtMap.emplace_back(getDeclID(I.first), &I.second);
4340
4341 auto CompareByDeclID = [](const ElementTy &E1, const ElementTy &E2) -> bool {
4342 return E1.first < E2.first;
4343 };
4344 llvm::sort(StableOpenCLDeclExtMap, CompareByDeclID);
4345
4346 RecordData Record;
4347 for (const ElementTy &E : StableOpenCLDeclExtMap) {
4348 Record.push_back(E.first); // DeclID
4349 const std::set<std::string> *ExtSet = E.second;
4350 Record.push_back(static_cast<unsigned>(ExtSet->size()));
4351 for (const std::string &Ext : *ExtSet)
4352 AddString(Ext, Record);
4353 }
4354
4355 Stream.EmitRecord(OPENCL_EXTENSION_DECLS, Record);
4356}
4357
4358void ASTWriter::WriteCUDAPragmas(Sema &SemaRef) {
4359 if (SemaRef.ForceCUDAHostDeviceDepth > 0) {
4360 RecordData::value_type Record[] = {SemaRef.ForceCUDAHostDeviceDepth};
4361 Stream.EmitRecord(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH, Record);
4362 }
4363}
4364
4365void ASTWriter::WriteObjCCategories() {
4366 SmallVector<ObjCCategoriesInfo, 2> CategoriesMap;
4367 RecordData Categories;
4368
4369 for (unsigned I = 0, N = ObjCClassesWithCategories.size(); I != N; ++I) {
4370 unsigned Size = 0;
4371 unsigned StartIndex = Categories.size();
4372
4373 ObjCInterfaceDecl *Class = ObjCClassesWithCategories[I];
4374
4375 // Allocate space for the size.
4376 Categories.push_back(0);
4377
4378 // Add the categories.
4379 for (ObjCInterfaceDecl::known_categories_iterator
4380 Cat = Class->known_categories_begin(),
4381 CatEnd = Class->known_categories_end();
4382 Cat != CatEnd; ++Cat, ++Size) {
4383 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4383, __PRETTY_FUNCTION__))
;
4384 AddDeclRef(*Cat, Categories);
4385 }
4386
4387 // Update the size.
4388 Categories[StartIndex] = Size;
4389
4390 // Record this interface -> category map.
4391 ObjCCategoriesInfo CatInfo = { getDeclID(Class), StartIndex };
4392 CategoriesMap.push_back(CatInfo);
4393 }
4394
4395 // Sort the categories map by the definition ID, since the reader will be
4396 // performing binary searches on this information.
4397 llvm::array_pod_sort(CategoriesMap.begin(), CategoriesMap.end());
4398
4399 // Emit the categories map.
4400 using namespace llvm;
4401
4402 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4403 Abbrev->Add(BitCodeAbbrevOp(OBJC_CATEGORIES_MAP));
4404 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # of entries
4405 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4406 unsigned AbbrevID = Stream.EmitAbbrev(std::move(Abbrev));
4407
4408 RecordData::value_type Record[] = {OBJC_CATEGORIES_MAP, CategoriesMap.size()};
4409 Stream.EmitRecordWithBlob(AbbrevID, Record,
4410 reinterpret_cast<char *>(CategoriesMap.data()),
4411 CategoriesMap.size() * sizeof(ObjCCategoriesInfo));
4412
4413 // Emit the category lists.
4414 Stream.EmitRecord(OBJC_CATEGORIES, Categories);
4415}
4416
4417void ASTWriter::WriteLateParsedTemplates(Sema &SemaRef) {
4418 Sema::LateParsedTemplateMapT &LPTMap = SemaRef.LateParsedTemplateMap;
4419
4420 if (LPTMap.empty())
4421 return;
4422
4423 RecordData Record;
4424 for (auto &LPTMapEntry : LPTMap) {
4425 const FunctionDecl *FD = LPTMapEntry.first;
4426 LateParsedTemplate &LPT = *LPTMapEntry.second;
4427 AddDeclRef(FD, Record);
4428 AddDeclRef(LPT.D, Record);
4429 Record.push_back(LPT.Toks.size());
4430
4431 for (const auto &Tok : LPT.Toks) {
4432 AddToken(Tok, Record);
4433 }
4434 }
4435 Stream.EmitRecord(LATE_PARSED_TEMPLATE, Record);
4436}
4437
4438/// Write the state of 'pragma clang optimize' at the end of the module.
4439void ASTWriter::WriteOptimizePragmaOptions(Sema &SemaRef) {
4440 RecordData Record;
4441 SourceLocation PragmaLoc = SemaRef.getOptimizeOffPragmaLocation();
4442 AddSourceLocation(PragmaLoc, Record);
4443 Stream.EmitRecord(OPTIMIZE_PRAGMA_OPTIONS, Record);
4444}
4445
4446/// Write the state of 'pragma ms_struct' at the end of the module.
4447void ASTWriter::WriteMSStructPragmaOptions(Sema &SemaRef) {
4448 RecordData Record;
4449 Record.push_back(SemaRef.MSStructPragmaOn ? PMSST_ON : PMSST_OFF);
4450 Stream.EmitRecord(MSSTRUCT_PRAGMA_OPTIONS, Record);
4451}
4452
4453/// Write the state of 'pragma pointers_to_members' at the end of the
4454//module.
4455void ASTWriter::WriteMSPointersToMembersPragmaOptions(Sema &SemaRef) {
4456 RecordData Record;
4457 Record.push_back(SemaRef.MSPointerToMemberRepresentationMethod);
4458 AddSourceLocation(SemaRef.ImplicitMSInheritanceAttrLoc, Record);
4459 Stream.EmitRecord(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS, Record);
4460}
4461
4462/// Write the state of 'pragma pack' at the end of the module.
4463void ASTWriter::WritePackPragmaOptions(Sema &SemaRef) {
4464 // Don't serialize pragma pack state for modules, since it should only take
4465 // effect on a per-submodule basis.
4466 if (WritingModule)
4467 return;
4468
4469 RecordData Record;
4470 Record.push_back(SemaRef.PackStack.CurrentValue);
4471 AddSourceLocation(SemaRef.PackStack.CurrentPragmaLocation, Record);
4472 Record.push_back(SemaRef.PackStack.Stack.size());
4473 for (const auto &StackEntry : SemaRef.PackStack.Stack) {
4474 Record.push_back(StackEntry.Value);
4475 AddSourceLocation(StackEntry.PragmaLocation, Record);
4476 AddSourceLocation(StackEntry.PragmaPushLocation, Record);
4477 AddString(StackEntry.StackSlotLabel, Record);
4478 }
4479 Stream.EmitRecord(PACK_PRAGMA_OPTIONS, Record);
4480}
4481
4482void ASTWriter::WriteModuleFileExtension(Sema &SemaRef,
4483 ModuleFileExtensionWriter &Writer) {
4484 // Enter the extension block.
4485 Stream.EnterSubblock(EXTENSION_BLOCK_ID, 4);
4486
4487 // Emit the metadata record abbreviation.
4488 auto Abv = std::make_shared<llvm::BitCodeAbbrev>();
4489 Abv->Add(llvm::BitCodeAbbrevOp(EXTENSION_METADATA));
4490 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4491 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4492 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4493 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4494 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4495 unsigned Abbrev = Stream.EmitAbbrev(std::move(Abv));
4496
4497 // Emit the metadata record.
4498 RecordData Record;
4499 auto Metadata = Writer.getExtension()->getExtensionMetadata();
4500 Record.push_back(EXTENSION_METADATA);
4501 Record.push_back(Metadata.MajorVersion);
4502 Record.push_back(Metadata.MinorVersion);
4503 Record.push_back(Metadata.BlockName.size());
4504 Record.push_back(Metadata.UserInfo.size());
4505 SmallString<64> Buffer;
4506 Buffer += Metadata.BlockName;
4507 Buffer += Metadata.UserInfo;
4508 Stream.EmitRecordWithBlob(Abbrev, Record, Buffer);
4509
4510 // Emit the contents of the extension block.
4511 Writer.writeExtensionContents(SemaRef, Stream);
4512
4513 // Exit the extension block.
4514 Stream.ExitBlock();
4515}
4516
4517//===----------------------------------------------------------------------===//
4518// General Serialization Routines
4519//===----------------------------------------------------------------------===//
4520
4521void ASTRecordWriter::AddAttr(const Attr *A) {
4522 auto &Record = *this;
4523 if (!A)
4524 return Record.push_back(0);
4525 Record.push_back(A->getKind() + 1); // FIXME: stable encoding, target attrs
4526
4527 Record.AddIdentifierRef(A->getAttrName());
4528 Record.AddIdentifierRef(A->getScopeName());
4529 Record.AddSourceRange(A->getRange());
4530 Record.AddSourceLocation(A->getScopeLoc());
4531 Record.push_back(A->getParsedKind());
4532 Record.push_back(A->getSyntax());
4533 Record.push_back(A->getAttributeSpellingListIndexRaw());
4534
4535#include "clang/Serialization/AttrPCHWrite.inc"
4536}
4537
4538/// Emit the list of attributes to the specified record.
4539void ASTRecordWriter::AddAttributes(ArrayRef<const Attr *> Attrs) {
4540 push_back(Attrs.size());
4541 for (const auto *A : Attrs)
4542 AddAttr(A);
4543}
4544
4545void ASTWriter::AddToken(const Token &Tok, RecordDataImpl &Record) {
4546 AddSourceLocation(Tok.getLocation(), Record);
4547 Record.push_back(Tok.getLength());
4548
4549 // FIXME: When reading literal tokens, reconstruct the literal pointer
4550 // if it is needed.
4551 AddIdentifierRef(Tok.getIdentifierInfo(), Record);
4552 // FIXME: Should translate token kind to a stable encoding.
4553 Record.push_back(Tok.getKind());
4554 // FIXME: Should translate token flags to a stable encoding.
4555 Record.push_back(Tok.getFlags());
4556}
4557
4558void ASTWriter::AddString(StringRef Str, RecordDataImpl &Record) {
4559 Record.push_back(Str.size());
4560 Record.insert(Record.end(), Str.begin(), Str.end());
4561}
4562
4563bool ASTWriter::PreparePathForOutput(SmallVectorImpl<char> &Path) {
4564 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4564, __PRETTY_FUNCTION__))
;
4565
4566 bool Changed =
4567 cleanPathForOutput(Context->getSourceManager().getFileManager(), Path);
4568
4569 // Remove a prefix to make the path relative, if relevant.
4570 const char *PathBegin = Path.data();
4571 const char *PathPtr =
4572 adjustFilenameForRelocatableAST(PathBegin, BaseDirectory);
4573 if (PathPtr != PathBegin) {
4574 Path.erase(Path.begin(), Path.begin() + (PathPtr - PathBegin));
4575 Changed = true;
4576 }
4577
4578 return Changed;
4579}
4580
4581void ASTWriter::AddPath(StringRef Path, RecordDataImpl &Record) {
4582 SmallString<128> FilePath(Path);
4583 PreparePathForOutput(FilePath);
4584 AddString(FilePath, Record);
4585}
4586
4587void ASTWriter::EmitRecordWithPath(unsigned Abbrev, RecordDataRef Record,
4588 StringRef Path) {
4589 SmallString<128> FilePath(Path);
4590 PreparePathForOutput(FilePath);
4591 Stream.EmitRecordWithBlob(Abbrev, Record, FilePath);
4592}
4593
4594void ASTWriter::AddVersionTuple(const VersionTuple &Version,
4595 RecordDataImpl &Record) {
4596 Record.push_back(Version.getMajor());
4597 if (Optional<unsigned> Minor = Version.getMinor())
4598 Record.push_back(*Minor + 1);
4599 else
4600 Record.push_back(0);
4601 if (Optional<unsigned> Subminor = Version.getSubminor())
4602 Record.push_back(*Subminor + 1);
4603 else
4604 Record.push_back(0);
4605}
4606
4607/// Note that the identifier II occurs at the given offset
4608/// within the identifier table.
4609void ASTWriter::SetIdentifierOffset(const IdentifierInfo *II, uint32_t Offset) {
4610 IdentID ID = IdentifierIDs[II];
4611 // Only store offsets new to this AST file. Other identifier names are looked
4612 // up earlier in the chain and thus don't need an offset.
4613 if (ID >= FirstIdentID)
4614 IdentifierOffsets[ID - FirstIdentID] = Offset;
4615}
4616
4617/// Note that the selector Sel occurs at the given offset
4618/// within the method pool/selector table.
4619void ASTWriter::SetSelectorOffset(Selector Sel, uint32_t Offset) {
4620 unsigned ID = SelectorIDs[Sel];
4621 assert(ID && "Unknown selector")((ID && "Unknown selector") ? static_cast<void>
(0) : __assert_fail ("ID && \"Unknown selector\"", "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4621, __PRETTY_FUNCTION__))
;
4622 // Don't record offsets for selectors that are also available in a different
4623 // file.
4624 if (ID < FirstSelectorID)
4625 return;
4626 SelectorOffsets[ID - FirstSelectorID] = Offset;
4627}
4628
4629ASTWriter::ASTWriter(llvm::BitstreamWriter &Stream,
4630 SmallVectorImpl<char> &Buffer,
4631 InMemoryModuleCache &ModuleCache,
4632 ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions,
4633 bool IncludeTimestamps)
4634 : Stream(Stream), Buffer(Buffer), ModuleCache(ModuleCache),
4635 IncludeTimestamps(IncludeTimestamps) {
4636 for (const auto &Ext : Extensions) {
4637 if (auto Writer = Ext->createExtensionWriter(*this))
4638 ModuleFileExtensionWriters.push_back(std::move(Writer));
4639 }
4640}
4641
4642ASTWriter::~ASTWriter() {
4643 llvm::DeleteContainerSeconds(FileDeclIDs);
4644}
4645
4646const LangOptions &ASTWriter::getLangOpts() const {
4647 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4647, __PRETTY_FUNCTION__))
;
4648 return Context->getLangOpts();
4649}
4650
4651time_t ASTWriter::getTimestampForOutput(const FileEntry *E) const {
4652 return IncludeTimestamps ? E->getModificationTime() : 0;
4653}
4654
4655ASTFileSignature ASTWriter::WriteAST(Sema &SemaRef,
4656 const std::string &OutputFile,
4657 Module *WritingModule, StringRef isysroot,
4658 bool hasErrors,
4659 bool ShouldCacheASTInMemory) {
4660 WritingAST = true;
4661
4662 ASTHasCompilerErrors = hasErrors;
4663
4664 // Emit the file header.
4665 Stream.Emit((unsigned)'C', 8);
4666 Stream.Emit((unsigned)'P', 8);
4667 Stream.Emit((unsigned)'C', 8);
4668 Stream.Emit((unsigned)'H', 8);
4669
4670 WriteBlockInfoBlock();
4671
4672 Context = &SemaRef.Context;
4673 PP = &SemaRef.PP;
4674 this->WritingModule = WritingModule;
4675 ASTFileSignature Signature =
4676 WriteASTCore(SemaRef, isysroot, OutputFile, WritingModule);
4677 Context = nullptr;
4678 PP = nullptr;
4679 this->WritingModule = nullptr;
4680 this->BaseDirectory.clear();
4681
4682 WritingAST = false;
4683 if (ShouldCacheASTInMemory) {
4684 // Construct MemoryBuffer and update buffer manager.
4685 ModuleCache.addBuiltPCM(OutputFile,
4686 llvm::MemoryBuffer::getMemBufferCopy(
4687 StringRef(Buffer.begin(), Buffer.size())));
4688 }
4689 return Signature;
4690}
4691
4692template<typename Vector>
4693static void AddLazyVectorDecls(ASTWriter &Writer, Vector &Vec,
4694 ASTWriter::RecordData &Record) {
4695 for (typename Vector::iterator I = Vec.begin(nullptr, true), E = Vec.end();
4696 I != E; ++I) {
4697 Writer.AddDeclRef(*I, Record);
4698 }
4699}
4700
4701ASTFileSignature ASTWriter::WriteASTCore(Sema &SemaRef, StringRef isysroot,
4702 const std::string &OutputFile,
4703 Module *WritingModule) {
4704 using namespace llvm;
4705
4706 bool isModule = WritingModule != nullptr;
4707
4708 // Make sure that the AST reader knows to finalize itself.
4709 if (Chain)
4710 Chain->finalizeForWriting();
4711
4712 ASTContext &Context = SemaRef.Context;
4713 Preprocessor &PP = SemaRef.PP;
4714
4715 // Set up predefined declaration IDs.
4716 auto RegisterPredefDecl = [&] (Decl *D, PredefinedDeclIDs ID) {
4717 if (D) {
4718 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4718, __PRETTY_FUNCTION__))
;
4719 DeclIDs[D] = ID;
4720 }
4721 };
4722 RegisterPredefDecl(Context.getTranslationUnitDecl(),
4723 PREDEF_DECL_TRANSLATION_UNIT_ID);
4724 RegisterPredefDecl(Context.ObjCIdDecl, PREDEF_DECL_OBJC_ID_ID);
4725 RegisterPredefDecl(Context.ObjCSelDecl, PREDEF_DECL_OBJC_SEL_ID);
4726 RegisterPredefDecl(Context.ObjCClassDecl, PREDEF_DECL_OBJC_CLASS_ID);
4727 RegisterPredefDecl(Context.ObjCProtocolClassDecl,
4728 PREDEF_DECL_OBJC_PROTOCOL_ID);
4729 RegisterPredefDecl(Context.Int128Decl, PREDEF_DECL_INT_128_ID);
4730 RegisterPredefDecl(Context.UInt128Decl, PREDEF_DECL_UNSIGNED_INT_128_ID);
4731 RegisterPredefDecl(Context.ObjCInstanceTypeDecl,
4732 PREDEF_DECL_OBJC_INSTANCETYPE_ID);
4733 RegisterPredefDecl(Context.BuiltinVaListDecl, PREDEF_DECL_BUILTIN_VA_LIST_ID);
4734 RegisterPredefDecl(Context.VaListTagDecl, PREDEF_DECL_VA_LIST_TAG);
4735 RegisterPredefDecl(Context.BuiltinMSVaListDecl,
4736 PREDEF_DECL_BUILTIN_MS_VA_LIST_ID);
4737 RegisterPredefDecl(Context.ExternCContext, PREDEF_DECL_EXTERN_C_CONTEXT_ID);
4738 RegisterPredefDecl(Context.MakeIntegerSeqDecl,
4739 PREDEF_DECL_MAKE_INTEGER_SEQ_ID);
4740 RegisterPredefDecl(Context.CFConstantStringTypeDecl,
4741 PREDEF_DECL_CF_CONSTANT_STRING_ID);
4742 RegisterPredefDecl(Context.CFConstantStringTagDecl,
4743 PREDEF_DECL_CF_CONSTANT_STRING_TAG_ID);
4744 RegisterPredefDecl(Context.TypePackElementDecl,
4745 PREDEF_DECL_TYPE_PACK_ELEMENT_ID);
4746
4747 // Build a record containing all of the tentative definitions in this file, in
4748 // TentativeDefinitions order. Generally, this record will be empty for
4749 // headers.
4750 RecordData TentativeDefinitions;
4751 AddLazyVectorDecls(*this, SemaRef.TentativeDefinitions, TentativeDefinitions);
4752
4753 // Build a record containing all of the file scoped decls in this file.
4754 RecordData UnusedFileScopedDecls;
4755 if (!isModule)
4756 AddLazyVectorDecls(*this, SemaRef.UnusedFileScopedDecls,
4757 UnusedFileScopedDecls);
4758
4759 // Build a record containing all of the delegating constructors we still need
4760 // to resolve.
4761 RecordData DelegatingCtorDecls;
4762 if (!isModule)
4763 AddLazyVectorDecls(*this, SemaRef.DelegatingCtorDecls, DelegatingCtorDecls);
4764
4765 // Write the set of weak, undeclared identifiers. We always write the
4766 // entire table, since later PCH files in a PCH chain are only interested in
4767 // the results at the end of the chain.
4768 RecordData WeakUndeclaredIdentifiers;
4769 for (auto &WeakUndeclaredIdentifier : SemaRef.WeakUndeclaredIdentifiers) {
4770 IdentifierInfo *II = WeakUndeclaredIdentifier.first;
4771 WeakInfo &WI = WeakUndeclaredIdentifier.second;
4772 AddIdentifierRef(II, WeakUndeclaredIdentifiers);
4773 AddIdentifierRef(WI.getAlias(), WeakUndeclaredIdentifiers);
4774 AddSourceLocation(WI.getLocation(), WeakUndeclaredIdentifiers);
4775 WeakUndeclaredIdentifiers.push_back(WI.getUsed());
4776 }
4777
4778 // Build a record containing all of the ext_vector declarations.
4779 RecordData ExtVectorDecls;
4780 AddLazyVectorDecls(*this, SemaRef.ExtVectorDecls, ExtVectorDecls);
4781
4782 // Build a record containing all of the VTable uses information.
4783 RecordData VTableUses;
4784 if (!SemaRef.VTableUses.empty()) {
4785 for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I) {
4786 AddDeclRef(SemaRef.VTableUses[I].first, VTableUses);
4787 AddSourceLocation(SemaRef.VTableUses[I].second, VTableUses);
4788 VTableUses.push_back(SemaRef.VTablesUsed[SemaRef.VTableUses[I].first]);
4789 }
4790 }
4791
4792 // Build a record containing all of the UnusedLocalTypedefNameCandidates.
4793 RecordData UnusedLocalTypedefNameCandidates;
4794 for (const TypedefNameDecl *TD : SemaRef.UnusedLocalTypedefNameCandidates)
4795 AddDeclRef(TD, UnusedLocalTypedefNameCandidates);
4796
4797 // Build a record containing all of pending implicit instantiations.
4798 RecordData PendingInstantiations;
4799 for (const auto &I : SemaRef.PendingInstantiations) {
4800 AddDeclRef(I.first, PendingInstantiations);
4801 AddSourceLocation(I.second, PendingInstantiations);
4802 }
4803 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4804, __PRETTY_FUNCTION__))
4804 "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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4804, __PRETTY_FUNCTION__))
;
4805
4806 // Build a record containing some declaration references.
4807 RecordData SemaDeclRefs;
4808 if (SemaRef.StdNamespace || SemaRef.StdBadAlloc || SemaRef.StdAlignValT) {
4809 AddDeclRef(SemaRef.getStdNamespace(), SemaDeclRefs);
4810 AddDeclRef(SemaRef.getStdBadAlloc(), SemaDeclRefs);
4811 AddDeclRef(SemaRef.getStdAlignValT(), SemaDeclRefs);
4812 }
4813
4814 RecordData CUDASpecialDeclRefs;
4815 if (Context.getcudaConfigureCallDecl()) {
4816 AddDeclRef(Context.getcudaConfigureCallDecl(), CUDASpecialDeclRefs);
4817 }
4818
4819 // Build a record containing all of the known namespaces.
4820 RecordData KnownNamespaces;
4821 for (const auto &I : SemaRef.KnownNamespaces) {
4822 if (!I.second)
4823 AddDeclRef(I.first, KnownNamespaces);
4824 }
4825
4826 // Build a record of all used, undefined objects that require definitions.
4827 RecordData UndefinedButUsed;
4828
4829 SmallVector<std::pair<NamedDecl *, SourceLocation>, 16> Undefined;
4830 SemaRef.getUndefinedButUsed(Undefined);
4831 for (const auto &I : Undefined) {
4832 AddDeclRef(I.first, UndefinedButUsed);
4833 AddSourceLocation(I.second, UndefinedButUsed);
4834 }
4835
4836 // Build a record containing all delete-expressions that we would like to
4837 // analyze later in AST.
4838 RecordData DeleteExprsToAnalyze;
4839
4840 if (!isModule) {
4841 for (const auto &DeleteExprsInfo :
4842 SemaRef.getMismatchingDeleteExpressions()) {
4843 AddDeclRef(DeleteExprsInfo.first, DeleteExprsToAnalyze);
4844 DeleteExprsToAnalyze.push_back(DeleteExprsInfo.second.size());
4845 for (const auto &DeleteLoc : DeleteExprsInfo.second) {
4846 AddSourceLocation(DeleteLoc.first, DeleteExprsToAnalyze);
4847 DeleteExprsToAnalyze.push_back(DeleteLoc.second);
4848 }
4849 }
4850 }
4851
4852 // Write the control block
4853 WriteControlBlock(PP, Context, isysroot, OutputFile);
4854
4855 // Write the remaining AST contents.
4856 Stream.EnterSubblock(AST_BLOCK_ID, 5);
4857
4858 // This is so that older clang versions, before the introduction
4859 // of the control block, can read and reject the newer PCH format.
4860 {
4861 RecordData Record = {VERSION_MAJOR};
4862 Stream.EmitRecord(METADATA_OLD_FORMAT, Record);
4863 }
4864
4865 // Create a lexical update block containing all of the declarations in the
4866 // translation unit that do not come from other AST files.
4867 const TranslationUnitDecl *TU = Context.getTranslationUnitDecl();
4868 SmallVector<uint32_t, 128> NewGlobalKindDeclPairs;
4869 for (const auto *D : TU->noload_decls()) {
4870 if (!D->isFromASTFile()) {
4871 NewGlobalKindDeclPairs.push_back(D->getKind());
4872 NewGlobalKindDeclPairs.push_back(GetDeclRef(D));
4873 }
4874 }
4875
4876 auto Abv = std::make_shared<BitCodeAbbrev>();
4877 Abv->Add(llvm::BitCodeAbbrevOp(TU_UPDATE_LEXICAL));
4878 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4879 unsigned TuUpdateLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv));
4880 {
4881 RecordData::value_type Record[] = {TU_UPDATE_LEXICAL};
4882 Stream.EmitRecordWithBlob(TuUpdateLexicalAbbrev, Record,
4883 bytes(NewGlobalKindDeclPairs));
4884 }
4885
4886 // And a visible updates block for the translation unit.
4887 Abv = std::make_shared<BitCodeAbbrev>();
4888 Abv->Add(llvm::BitCodeAbbrevOp(UPDATE_VISIBLE));
4889 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4890 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4891 UpdateVisibleAbbrev = Stream.EmitAbbrev(std::move(Abv));
4892 WriteDeclContextVisibleUpdate(TU);
4893
4894 // If we have any extern "C" names, write out a visible update for them.
4895 if (Context.ExternCContext)
4896 WriteDeclContextVisibleUpdate(Context.ExternCContext);
4897
4898 // If the translation unit has an anonymous namespace, and we don't already
4899 // have an update block for it, write it as an update block.
4900 // FIXME: Why do we not do this if there's already an update block?
4901 if (NamespaceDecl *NS = TU->getAnonymousNamespace()) {
4902 ASTWriter::UpdateRecord &Record = DeclUpdates[TU];
4903 if (Record.empty())
4904 Record.push_back(DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, NS));
4905 }
4906
4907 // Add update records for all mangling numbers and static local numbers.
4908 // These aren't really update records, but this is a convenient way of
4909 // tagging this rare extra data onto the declarations.
4910 for (const auto &Number : Context.MangleNumbers)
4911 if (!Number.first->isFromASTFile())
4912 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_MANGLING_NUMBER,
4913 Number.second));
4914 for (const auto &Number : Context.StaticLocalNumbers)
4915 if (!Number.first->isFromASTFile())
4916 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_STATIC_LOCAL_NUMBER,
4917 Number.second));
4918
4919 // Make sure visible decls, added to DeclContexts previously loaded from
4920 // an AST file, are registered for serialization. Likewise for template
4921 // specializations added to imported templates.
4922 for (const auto *I : DeclsToEmitEvenIfUnreferenced) {
4923 GetDeclRef(I);
4924 }
4925
4926 // Make sure all decls associated with an identifier are registered for
4927 // serialization, if we're storing decls with identifiers.
4928 if (!WritingModule || !getLangOpts().CPlusPlus) {
4929 llvm::SmallVector<const IdentifierInfo*, 256> IIs;
4930 for (const auto &ID : PP.getIdentifierTable()) {
4931 const IdentifierInfo *II = ID.second;
4932 if (!Chain || !II->isFromAST() || II->hasChangedSinceDeserialization())
4933 IIs.push_back(II);
4934 }
4935 // Sort the identifiers to visit based on their name.
4936 llvm::sort(IIs, llvm::deref<std::less<>>());
4937 for (const IdentifierInfo *II : IIs) {
4938 for (IdentifierResolver::iterator D = SemaRef.IdResolver.begin(II),
4939 DEnd = SemaRef.IdResolver.end();
4940 D != DEnd; ++D) {
4941 GetDeclRef(*D);
4942 }
4943 }
4944 }
4945
4946 // For method pool in the module, if it contains an entry for a selector,
4947 // the entry should be complete, containing everything introduced by that
4948 // module and all modules it imports. It's possible that the entry is out of
4949 // date, so we need to pull in the new content here.
4950
4951 // It's possible that updateOutOfDateSelector can update SelectorIDs. To be
4952 // safe, we copy all selectors out.
4953 llvm::SmallVector<Selector, 256> AllSelectors;
4954 for (auto &SelectorAndID : SelectorIDs)
4955 AllSelectors.push_back(SelectorAndID.first);
4956 for (auto &Selector : AllSelectors)
4957 SemaRef.updateOutOfDateSelector(Selector);
4958
4959 // Form the record of special types.
4960 RecordData SpecialTypes;
4961 AddTypeRef(Context.getRawCFConstantStringType(), SpecialTypes);
4962 AddTypeRef(Context.getFILEType(), SpecialTypes);
4963 AddTypeRef(Context.getjmp_bufType(), SpecialTypes);
4964 AddTypeRef(Context.getsigjmp_bufType(), SpecialTypes);
4965 AddTypeRef(Context.ObjCIdRedefinitionType, SpecialTypes);
4966 AddTypeRef(Context.ObjCClassRedefinitionType, SpecialTypes);
4967 AddTypeRef(Context.ObjCSelRedefinitionType, SpecialTypes);
4968 AddTypeRef(Context.getucontext_tType(), SpecialTypes);
4969
4970 if (Chain) {
4971 // Write the mapping information describing our module dependencies and how
4972 // each of those modules were mapped into our own offset/ID space, so that
4973 // the reader can build the appropriate mapping to its own offset/ID space.
4974 // The map consists solely of a blob with the following format:
4975 // *(module-kind:i8
4976 // module-name-len:i16 module-name:len*i8
4977 // source-location-offset:i32
4978 // identifier-id:i32
4979 // preprocessed-entity-id:i32
4980 // macro-definition-id:i32
4981 // submodule-id:i32
4982 // selector-id:i32
4983 // declaration-id:i32
4984 // c++-base-specifiers-id:i32
4985 // type-id:i32)
4986 //
4987 // module-kind is the ModuleKind enum value. If it is MK_PrebuiltModule or
4988 // MK_ExplicitModule, then the module-name is the module name. Otherwise,
4989 // it is the module file name.
4990 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4991 Abbrev->Add(BitCodeAbbrevOp(MODULE_OFFSET_MAP));
4992 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4993 unsigned ModuleOffsetMapAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
4994 SmallString<2048> Buffer;
4995 {
4996 llvm::raw_svector_ostream Out(Buffer);
4997 for (ModuleFile &M : Chain->ModuleMgr) {
4998 using namespace llvm::support;
4999
5000 endian::Writer LE(Out, little);
5001 LE.write<uint8_t>(static_cast<uint8_t>(M.Kind));
5002 StringRef Name =
5003 M.Kind == MK_PrebuiltModule || M.Kind == MK_ExplicitModule
5004 ? M.ModuleName
5005 : M.FileName;
5006 LE.write<uint16_t>(Name.size());
5007 Out.write(Name.data(), Name.size());
5008
5009 // Note: if a base ID was uint max, it would not be possible to load
5010 // another module after it or have more than one entity inside it.
5011 uint32_t None = std::numeric_limits<uint32_t>::max();
5012
5013 auto writeBaseIDOrNone = [&](uint32_t BaseID, bool ShouldWrite) {
5014 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5014, __PRETTY_FUNCTION__))
;
5015 if (ShouldWrite)
5016 LE.write<uint32_t>(BaseID);
5017 else
5018 LE.write<uint32_t>(None);
5019 };
5020
5021 // These values should be unique within a chain, since they will be read
5022 // as keys into ContinuousRangeMaps.
5023 writeBaseIDOrNone(M.SLocEntryBaseOffset, M.LocalNumSLocEntries);
5024 writeBaseIDOrNone(M.BaseIdentifierID, M.LocalNumIdentifiers);
5025 writeBaseIDOrNone(M.BaseMacroID, M.LocalNumMacros);
5026 writeBaseIDOrNone(M.BasePreprocessedEntityID,
5027 M.NumPreprocessedEntities);
5028 writeBaseIDOrNone(M.BaseSubmoduleID, M.LocalNumSubmodules);
5029 writeBaseIDOrNone(M.BaseSelectorID, M.LocalNumSelectors);
5030 writeBaseIDOrNone(M.BaseDeclID, M.LocalNumDecls);
5031 writeBaseIDOrNone(M.BaseTypeIndex, M.LocalNumTypes);
5032 }
5033 }
5034 RecordData::value_type Record[] = {MODULE_OFFSET_MAP};
5035 Stream.EmitRecordWithBlob(ModuleOffsetMapAbbrev, Record,
5036 Buffer.data(), Buffer.size());
5037 }
5038
5039 RecordData DeclUpdatesOffsetsRecord;
5040
5041 // Keep writing types, declarations, and declaration update records
5042 // until we've emitted all of them.
5043 Stream.EnterSubblock(DECLTYPES_BLOCK_ID, /*bits for abbreviations*/5);
5044 WriteTypeAbbrevs();
5045 WriteDeclAbbrevs();
5046 do {
5047 WriteDeclUpdatesBlocks(DeclUpdatesOffsetsRecord);
5048 while (!DeclTypesToEmit.empty()) {
5049 DeclOrType DOT = DeclTypesToEmit.front();
5050 DeclTypesToEmit.pop();
5051 if (DOT.isType())
5052 WriteType(DOT.getType());
5053 else
5054 WriteDecl(Context, DOT.getDecl());
5055 }
5056 } while (!DeclUpdates.empty());
5057 Stream.ExitBlock();
5058
5059 DoneWritingDeclsAndTypes = true;
5060
5061 // These things can only be done once we've written out decls and types.
5062 WriteTypeDeclOffsets();
5063 if (!DeclUpdatesOffsetsRecord.empty())
5064 Stream.EmitRecord(DECL_UPDATE_OFFSETS, DeclUpdatesOffsetsRecord);
5065 WriteFileDeclIDsMap();
5066 WriteSourceManagerBlock(Context.getSourceManager(), PP);
5067 WriteComments();
5068 WritePreprocessor(PP, isModule);
5069 WriteHeaderSearch(PP.getHeaderSearchInfo());
5070 WriteSelectors(SemaRef);
5071 WriteReferencedSelectorsPool(SemaRef);
5072 WriteLateParsedTemplates(SemaRef);
5073 WriteIdentifierTable(PP, SemaRef.IdResolver, isModule);
5074 WriteFPPragmaOptions(SemaRef.getFPOptions());
5075 WriteOpenCLExtensions(SemaRef);
5076 WriteOpenCLExtensionTypes(SemaRef);
5077 WriteCUDAPragmas(SemaRef);
5078
5079 // If we're emitting a module, write out the submodule information.
5080 if (WritingModule)
5081 WriteSubmodules(WritingModule);
5082
5083 // We need to have information about submodules to correctly deserialize
5084 // decls from OpenCLExtensionDecls block
5085 WriteOpenCLExtensionDecls(SemaRef);
5086
5087 Stream.EmitRecord(SPECIAL_TYPES, SpecialTypes);
5088
5089 // Write the record containing external, unnamed definitions.
5090 if (!EagerlyDeserializedDecls.empty())
5091 Stream.EmitRecord(EAGERLY_DESERIALIZED_DECLS, EagerlyDeserializedDecls);
5092
5093 if (!ModularCodegenDecls.empty())
5094 Stream.EmitRecord(MODULAR_CODEGEN_DECLS, ModularCodegenDecls);
5095
5096 // Write the record containing tentative definitions.
5097 if (!TentativeDefinitions.empty())
5098 Stream.EmitRecord(TENTATIVE_DEFINITIONS, TentativeDefinitions);
5099
5100 // Write the record containing unused file scoped decls.
5101 if (!UnusedFileScopedDecls.empty())
5102 Stream.EmitRecord(UNUSED_FILESCOPED_DECLS, UnusedFileScopedDecls);
5103
5104 // Write the record containing weak undeclared identifiers.
5105 if (!WeakUndeclaredIdentifiers.empty())
5106 Stream.EmitRecord(WEAK_UNDECLARED_IDENTIFIERS,
5107 WeakUndeclaredIdentifiers);
5108
5109 // Write the record containing ext_vector type names.
5110 if (!ExtVectorDecls.empty())
5111 Stream.EmitRecord(EXT_VECTOR_DECLS, ExtVectorDecls);
5112
5113 // Write the record containing VTable uses information.
5114 if (!VTableUses.empty())
5115 Stream.EmitRecord(VTABLE_USES, VTableUses);
5116
5117 // Write the record containing potentially unused local typedefs.
5118 if (!UnusedLocalTypedefNameCandidates.empty())
5119 Stream.EmitRecord(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES,
5120 UnusedLocalTypedefNameCandidates);
5121
5122 // Write the record containing pending implicit instantiations.
5123 if (!PendingInstantiations.empty())
5124 Stream.EmitRecord(PENDING_IMPLICIT_INSTANTIATIONS, PendingInstantiations);
5125
5126 // Write the record containing declaration references of Sema.
5127 if (!SemaDeclRefs.empty())
5128 Stream.EmitRecord(SEMA_DECL_REFS, SemaDeclRefs);
5129
5130 // Write the record containing CUDA-specific declaration references.
5131 if (!CUDASpecialDeclRefs.empty())
5132 Stream.EmitRecord(CUDA_SPECIAL_DECL_REFS, CUDASpecialDeclRefs);
5133
5134 // Write the delegating constructors.
5135 if (!DelegatingCtorDecls.empty())
5136 Stream.EmitRecord(DELEGATING_CTORS, DelegatingCtorDecls);
5137
5138 // Write the known namespaces.
5139 if (!KnownNamespaces.empty())
5140 Stream.EmitRecord(KNOWN_NAMESPACES, KnownNamespaces);
5141
5142 // Write the undefined internal functions and variables, and inline functions.
5143 if (!UndefinedButUsed.empty())
5144 Stream.EmitRecord(UNDEFINED_BUT_USED, UndefinedButUsed);
5145
5146 if (!DeleteExprsToAnalyze.empty())
5147 Stream.EmitRecord(DELETE_EXPRS_TO_ANALYZE, DeleteExprsToAnalyze);
5148
5149 // Write the visible updates to DeclContexts.
5150 for (auto *DC : UpdatedDeclContexts)
5151 WriteDeclContextVisibleUpdate(DC);
5152
5153 if (!WritingModule) {
5154 // Write the submodules that were imported, if any.
5155 struct ModuleInfo {
5156 uint64_t ID;
5157 Module *M;
5158 ModuleInfo(uint64_t ID, Module *M) : ID(ID), M(M) {}
5159 };
5160 llvm::SmallVector<ModuleInfo, 64> Imports;
5161 for (const auto *I : Context.local_imports()) {
5162 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5162, __PRETTY_FUNCTION__))
;
5163 Imports.push_back(ModuleInfo(SubmoduleIDs[I->getImportedModule()],
5164 I->getImportedModule()));
5165 }
5166
5167 if (!Imports.empty()) {
5168 auto Cmp = [](const ModuleInfo &A, const ModuleInfo &B) {
5169 return A.ID < B.ID;
5170 };
5171 auto Eq = [](const ModuleInfo &A, const ModuleInfo &B) {
5172 return A.ID == B.ID;
5173 };
5174
5175 // Sort and deduplicate module IDs.
5176 llvm::sort(Imports, Cmp);
5177 Imports.erase(std::unique(Imports.begin(), Imports.end(), Eq),
5178 Imports.end());
5179
5180 RecordData ImportedModules;
5181 for (const auto &Import : Imports) {
5182 ImportedModules.push_back(Import.ID);
5183 // FIXME: If the module has macros imported then later has declarations
5184 // imported, this location won't be the right one as a location for the
5185 // declaration imports.
5186 AddSourceLocation(PP.getModuleImportLoc(Import.M), ImportedModules);
5187 }
5188
5189 Stream.EmitRecord(IMPORTED_MODULES, ImportedModules);
5190 }
5191 }
5192
5193 WriteObjCCategories();
5194 if(!WritingModule) {
5195 WriteOptimizePragmaOptions(SemaRef);
5196 WriteMSStructPragmaOptions(SemaRef);
5197 WriteMSPointersToMembersPragmaOptions(SemaRef);
5198 }
5199 WritePackPragmaOptions(SemaRef);
5200
5201 // Some simple statistics
5202 RecordData::value_type Record[] = {
5203 NumStatements, NumMacros, NumLexicalDeclContexts, NumVisibleDeclContexts};
5204 Stream.EmitRecord(STATISTICS, Record);
5205 Stream.ExitBlock();
5206
5207 // Write the module file extension blocks.
5208 for (const auto &ExtWriter : ModuleFileExtensionWriters)
5209 WriteModuleFileExtension(SemaRef, *ExtWriter);
5210
5211 return writeUnhashedControlBlock(PP, Context);
5212}
5213
5214void ASTWriter::WriteDeclUpdatesBlocks(RecordDataImpl &OffsetsRecord) {
5215 if (DeclUpdates.empty())
5216 return;
5217
5218 DeclUpdateMap LocalUpdates;
5219 LocalUpdates.swap(DeclUpdates);
5220
5221 for (auto &DeclUpdate : LocalUpdates) {
5222 const Decl *D = DeclUpdate.first;
5223
5224 bool HasUpdatedBody = false;
5225 RecordData RecordData;
5226 ASTRecordWriter Record(*this, RecordData);
5227 for (auto &Update : DeclUpdate.second) {
5228 DeclUpdateKind Kind = (DeclUpdateKind)Update.getKind();
5229
5230 // An updated body is emitted last, so that the reader doesn't need
5231 // to skip over the lazy body to reach statements for other records.
5232 if (Kind == UPD_CXX_ADDED_FUNCTION_DEFINITION)
5233 HasUpdatedBody = true;
5234 else
5235 Record.push_back(Kind);
5236
5237 switch (Kind) {
5238 case UPD_CXX_ADDED_IMPLICIT_MEMBER:
5239 case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION:
5240 case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE:
5241 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5241, __PRETTY_FUNCTION__))
;
5242 Record.push_back(GetDeclRef(Update.getDecl()));
5243 break;
5244
5245 case UPD_CXX_ADDED_FUNCTION_DEFINITION:
5246 break;
5247
5248 case UPD_CXX_POINT_OF_INSTANTIATION:
5249 // FIXME: Do we need to also save the template specialization kind here?
5250 Record.AddSourceLocation(Update.getLoc());
5251 break;
5252
5253 case UPD_CXX_ADDED_VAR_DEFINITION: {
5254 const VarDecl *VD = cast<VarDecl>(D);
5255 Record.push_back(VD->isInline());
5256 Record.push_back(VD->isInlineSpecified());
5257 if (VD->getInit()) {
5258 Record.push_back(!VD->isInitKnownICE() ? 1
5259 : (VD->isInitICE() ? 3 : 2));
5260 Record.AddStmt(const_cast<Expr*>(VD->getInit()));
5261 } else {
5262 Record.push_back(0);
5263 }
5264 break;
5265 }
5266
5267 case UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT:
5268 Record.AddStmt(const_cast<Expr *>(
5269 cast<ParmVarDecl>(Update.getDecl())->getDefaultArg()));
5270 break;
5271
5272 case UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER:
5273 Record.AddStmt(
5274 cast<FieldDecl>(Update.getDecl())->getInClassInitializer());
5275 break;
5276
5277 case UPD_CXX_INSTANTIATED_CLASS_DEFINITION: {
5278 auto *RD = cast<CXXRecordDecl>(D);
5279 UpdatedDeclContexts.insert(RD->getPrimaryContext());
5280 Record.push_back(RD->isParamDestroyedInCallee());
5281 Record.push_back(RD->getArgPassingRestrictions());
5282 Record.AddCXXDefinitionData(RD);
5283 Record.AddOffset(WriteDeclContextLexicalBlock(
5284 *Context, const_cast<CXXRecordDecl *>(RD)));
5285
5286 // This state is sometimes updated by template instantiation, when we
5287 // switch from the specialization referring to the template declaration
5288 // to it referring to the template definition.
5289 if (auto *MSInfo = RD->getMemberSpecializationInfo()) {
5290 Record.push_back(MSInfo->getTemplateSpecializationKind());
5291 Record.AddSourceLocation(MSInfo->getPointOfInstantiation());
5292 } else {
5293 auto *Spec = cast<ClassTemplateSpecializationDecl>(RD);
5294 Record.push_back(Spec->getTemplateSpecializationKind());
5295 Record.AddSourceLocation(Spec->getPointOfInstantiation());
5296
5297 // The instantiation might have been resolved to a partial
5298 // specialization. If so, record which one.
5299 auto From = Spec->getInstantiatedFrom();
5300 if (auto PartialSpec =
5301 From.dyn_cast<ClassTemplatePartialSpecializationDecl*>()) {
5302 Record.push_back(true);
5303 Record.AddDeclRef(PartialSpec);
5304 Record.AddTemplateArgumentList(
5305 &Spec->getTemplateInstantiationArgs());
5306 } else {
5307 Record.push_back(false);
5308 }
5309 }
5310 Record.push_back(RD->getTagKind());
5311 Record.AddSourceLocation(RD->getLocation());
5312 Record.AddSourceLocation(RD->getBeginLoc());
5313 Record.AddSourceRange(RD->getBraceRange());
5314
5315 // Instantiation may change attributes; write them all out afresh.
5316 Record.push_back(D->hasAttrs());
5317 if (D->hasAttrs())
5318 Record.AddAttributes(D->getAttrs());
5319
5320 // FIXME: Ensure we don't get here for explicit instantiations.
5321 break;
5322 }
5323
5324 case UPD_CXX_RESOLVED_DTOR_DELETE:
5325 Record.AddDeclRef(Update.getDecl());
5326 Record.AddStmt(cast<CXXDestructorDecl>(D)->getOperatorDeleteThisArg());
5327 break;
5328
5329 case UPD_CXX_RESOLVED_EXCEPTION_SPEC:
5330 addExceptionSpec(
5331 cast<FunctionDecl>(D)->getType()->castAs<FunctionProtoType>(),
5332 Record);
5333 break;
5334
5335 case UPD_CXX_DEDUCED_RETURN_TYPE:
5336 Record.push_back(GetOrCreateTypeID(Update.getType()));
5337 break;
5338
5339 case UPD_DECL_MARKED_USED:
5340 break;
5341
5342 case UPD_MANGLING_NUMBER:
5343 case UPD_STATIC_LOCAL_NUMBER:
5344 Record.push_back(Update.getNumber());
5345 break;
5346
5347 case UPD_DECL_MARKED_OPENMP_THREADPRIVATE:
5348 Record.AddSourceRange(
5349 D->getAttr<OMPThreadPrivateDeclAttr>()->getRange());
5350 break;
5351
5352 case UPD_DECL_MARKED_OPENMP_ALLOCATE: {
5353 auto *A = D->getAttr<OMPAllocateDeclAttr>();
5354 Record.push_back(A->getAllocatorType());
5355 Record.AddStmt(A->getAllocator());
5356 Record.AddSourceRange(A->getRange());
5357 break;
5358 }
5359
5360 case UPD_DECL_MARKED_OPENMP_DECLARETARGET:
5361 Record.push_back(D->getAttr<OMPDeclareTargetDeclAttr>()->getMapType());
5362 Record.AddSourceRange(
5363 D->getAttr<OMPDeclareTargetDeclAttr>()->getRange());
5364 break;
5365
5366 case UPD_DECL_EXPORTED:
5367 Record.push_back(getSubmoduleID(Update.getModule()));
5368 break;
5369
5370 case UPD_ADDED_ATTR_TO_RECORD:
5371 Record.AddAttributes(llvm::makeArrayRef(Update.getAttr()));
5372 break;
5373 }
5374 }
5375
5376 if (HasUpdatedBody) {
5377 const auto *Def = cast<FunctionDecl>(D);
5378 Record.push_back(UPD_CXX_ADDED_FUNCTION_DEFINITION);
5379 Record.push_back(Def->isInlined());
5380 Record.AddSourceLocation(Def->getInnerLocStart());
5381 Record.AddFunctionDefinition(Def);
5382 }
5383
5384 OffsetsRecord.push_back(GetDeclRef(D));
5385 OffsetsRecord.push_back(Record.Emit(DECL_UPDATES));
5386 }
5387}
5388
5389void ASTWriter::AddSourceLocation(SourceLocation Loc, RecordDataImpl &Record) {
5390 uint32_t Raw = Loc.getRawEncoding();
5391 Record.push_back((Raw << 1) | (Raw >> 31));
5392}
5393
5394void ASTWriter::AddSourceRange(SourceRange Range, RecordDataImpl &Record) {
5395 AddSourceLocation(Range.getBegin(), Record);
5396 AddSourceLocation(Range.getEnd(), Record);
5397}
5398
5399void ASTRecordWriter::AddAPInt(const llvm::APInt &Value) {
5400 Record->push_back(Value.getBitWidth());
5401 const uint64_t *Words = Value.getRawData();
5402 Record->append(Words, Words + Value.getNumWords());
5403}
5404
5405void ASTRecordWriter::AddAPSInt(const llvm::APSInt &Value) {
5406 Record->push_back(Value.isUnsigned());
5407 AddAPInt(Value);
5408}
5409
5410void ASTRecordWriter::AddAPFloat(const llvm::APFloat &Value) {
5411 AddAPInt(Value.bitcastToAPInt());
5412}
5413
5414static void WriteFixedPointSemantics(ASTRecordWriter &Record,
5415 FixedPointSemantics FPSema) {
5416 Record.push_back(FPSema.getWidth());
5417 Record.push_back(FPSema.getScale());
5418 Record.push_back(FPSema.isSigned() | FPSema.isSaturated() << 1 |
5419 FPSema.hasUnsignedPadding() << 2);
5420}
5421
5422void ASTRecordWriter::AddAPValue(const APValue &Value) {
5423 APValue::ValueKind Kind = Value.getKind();
5424 push_back(static_cast<uint64_t>(Kind));
5425 switch (Kind) {
5426 case APValue::None:
5427 case APValue::Indeterminate:
5428 return;
5429 case APValue::Int:
5430 AddAPSInt(Value.getInt());
5431 return;
5432 case APValue::Float:
5433 push_back(static_cast<uint64_t>(
5434 llvm::APFloatBase::SemanticsToEnum(Value.getFloat().getSemantics())));
5435 AddAPFloat(Value.getFloat());
5436 return;
5437 case APValue::FixedPoint: {
5438 WriteFixedPointSemantics(*this, Value.getFixedPoint().getSemantics());
5439 AddAPSInt(Value.getFixedPoint().getValue());
5440 return;
5441 }
5442 case APValue::ComplexInt: {
5443 AddAPSInt(Value.getComplexIntReal());
5444 AddAPSInt(Value.getComplexIntImag());
5445 return;
5446 }
5447 case APValue::ComplexFloat: {
5448 push_back(static_cast<uint64_t>(llvm::APFloatBase::SemanticsToEnum(
5449 Value.getComplexFloatReal().getSemantics())));
5450 AddAPFloat(Value.getComplexFloatReal());
5451 push_back(static_cast<uint64_t>(llvm::APFloatBase::SemanticsToEnum(
5452 Value.getComplexFloatImag().getSemantics())));
5453 AddAPFloat(Value.getComplexFloatImag());
5454 return;
5455 }
5456 case APValue::LValue:
5457 case APValue::Vector:
5458 case APValue::Array:
5459 case APValue::Struct:
5460 case APValue::Union:
5461 case APValue::MemberPointer:
5462 case APValue::AddrLabelDiff:
5463 // TODO : Handle all these APValue::ValueKind.
5464 return;
5465 }
5466 llvm_unreachable("Invalid APValue::ValueKind")::llvm::llvm_unreachable_internal("Invalid APValue::ValueKind"
, "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5466)
;
5467}
5468
5469void ASTWriter::AddIdentifierRef(const IdentifierInfo *II, RecordDataImpl &Record) {
5470 Record.push_back(getIdentifierRef(II));
5471}
5472
5473IdentID ASTWriter::getIdentifierRef(const IdentifierInfo *II) {
5474 if (!II)
5475 return 0;
5476
5477 IdentID &ID = IdentifierIDs[II];
5478 if (ID == 0)
5479 ID = NextIdentID++;
5480 return ID;
5481}
5482
5483MacroID ASTWriter::getMacroRef(MacroInfo *MI, const IdentifierInfo *Name) {
5484 // Don't emit builtin macros like __LINE__ to the AST file unless they
5485 // have been redefined by the header (in which case they are not
5486 // isBuiltinMacro).
5487 if (!MI || MI->isBuiltinMacro())
5488 return 0;
5489
5490 MacroID &ID = MacroIDs[MI];
5491 if (ID == 0) {
5492 ID = NextMacroID++;
5493 MacroInfoToEmitData Info = { Name, MI, ID };
5494 MacroInfosToEmit.push_back(Info);
5495 }
5496 return ID;
5497}
5498
5499MacroID ASTWriter::getMacroID(MacroInfo *MI) {
5500 if (!MI || MI->isBuiltinMacro())
5501 return 0;
5502
5503 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5503, __PRETTY_FUNCTION__))
;
5504 return MacroIDs[MI];
5505}
5506
5507uint64_t ASTWriter::getMacroDirectivesOffset(const IdentifierInfo *Name) {
5508 return IdentMacroDirectivesOffsetMap.lookup(Name);
5509}
5510
5511void ASTRecordWriter::AddSelectorRef(const Selector SelRef) {
5512 Record->push_back(Writer->getSelectorRef(SelRef));
5513}
5514
5515SelectorID ASTWriter::getSelectorRef(Selector Sel) {
5516 if (Sel.getAsOpaquePtr() == nullptr) {
5517 return 0;
5518 }
5519
5520 SelectorID SID = SelectorIDs[Sel];
5521 if (SID == 0 && Chain) {
5522 // This might trigger a ReadSelector callback, which will set the ID for
5523 // this selector.
5524 Chain->LoadSelector(Sel);
5525 SID = SelectorIDs[Sel];
5526 }
5527 if (SID == 0) {
5528 SID = NextSelectorID++;
5529 SelectorIDs[Sel] = SID;
5530 }
5531 return SID;
5532}
5533
5534void ASTRecordWriter::AddCXXTemporary(const CXXTemporary *Temp) {
5535 AddDeclRef(Temp->getDestructor());
5536}
5537
5538void ASTRecordWriter::AddTemplateArgumentLocInfo(
5539 TemplateArgument::ArgKind Kind, const TemplateArgumentLocInfo &Arg) {
5540 switch (Kind) {
5541 case TemplateArgument::Expression:
5542 AddStmt(Arg.getAsExpr());
5543 break;
5544 case TemplateArgument::Type:
5545 AddTypeSourceInfo(Arg.getAsTypeSourceInfo());
5546 break;
5547 case TemplateArgument::Template:
5548 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5549 AddSourceLocation(Arg.getTemplateNameLoc());
5550 break;
5551 case TemplateArgument::TemplateExpansion:
5552 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5553 AddSourceLocation(Arg.getTemplateNameLoc());
5554 AddSourceLocation(Arg.getTemplateEllipsisLoc());
5555 break;
5556 case TemplateArgument::Null:
5557 case TemplateArgument::Integral:
5558 case TemplateArgument::Declaration:
5559 case TemplateArgument::NullPtr:
5560 case TemplateArgument::Pack:
5561 // FIXME: Is this right?
5562 break;
5563 }
5564}
5565
5566void ASTRecordWriter::AddTemplateArgumentLoc(const TemplateArgumentLoc &Arg) {
5567 AddTemplateArgument(Arg.getArgument());
5568
5569 if (Arg.getArgument().getKind() == TemplateArgument::Expression) {
5570 bool InfoHasSameExpr
5571 = Arg.getArgument().getAsExpr() == Arg.getLocInfo().getAsExpr();
5572 Record->push_back(InfoHasSameExpr);
5573 if (InfoHasSameExpr)
5574 return; // Avoid storing the same expr twice.
5575 }
5576 AddTemplateArgumentLocInfo(Arg.getArgument().getKind(), Arg.getLocInfo());
5577}
5578
5579void ASTRecordWriter::AddTypeSourceInfo(TypeSourceInfo *TInfo) {
5580 if (!TInfo) {
5581 AddTypeRef(QualType());
5582 return;
5583 }
5584
5585 AddTypeRef(TInfo->getType());
5586 AddTypeLoc(TInfo->getTypeLoc());
5587}
5588
5589void ASTRecordWriter::AddTypeLoc(TypeLoc TL) {
5590 TypeLocWriter TLW(*this);
5591 for (; !TL.isNull(); TL = TL.getNextTypeLoc())
5592 TLW.Visit(TL);
5593}
5594
5595void ASTWriter::AddTypeRef(QualType T, RecordDataImpl &Record) {
5596 Record.push_back(GetOrCreateTypeID(T));
5597}
5598
5599TypeID ASTWriter::GetOrCreateTypeID(QualType T) {
5600 assert(Context)((Context) ? static_cast<void> (0) : __assert_fail ("Context"
, "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5600, __PRETTY_FUNCTION__))
;
5601 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5602 if (T.isNull())
5603 return TypeIdx();
5604 assert(!T.getLocalFastQualifiers())((!T.getLocalFastQualifiers()) ? static_cast<void> (0) :
__assert_fail ("!T.getLocalFastQualifiers()", "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5604, __PRETTY_FUNCTION__))
;
5605
5606 TypeIdx &Idx = TypeIdxs[T];
5607 if (Idx.getIndex() == 0) {
5608 if (DoneWritingDeclsAndTypes) {
5609 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5609, __PRETTY_FUNCTION__))
;
5610 return TypeIdx();
5611 }
5612
5613 // We haven't seen this type before. Assign it a new ID and put it
5614 // into the queue of types to emit.
5615 Idx = TypeIdx(NextTypeID++);
5616 DeclTypesToEmit.push(T);
5617 }
5618 return Idx;
5619 });
5620}
5621
5622TypeID ASTWriter::getTypeID(QualType T) const {
5623 assert(Context)((Context) ? static_cast<void> (0) : __assert_fail ("Context"
, "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5623, __PRETTY_FUNCTION__))
;
5624 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5625 if (T.isNull())
5626 return TypeIdx();
5627 assert(!T.getLocalFastQualifiers())((!T.getLocalFastQualifiers()) ? static_cast<void> (0) :
__assert_fail ("!T.getLocalFastQualifiers()", "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5627, __PRETTY_FUNCTION__))
;
5628
5629 TypeIdxMap::const_iterator I = TypeIdxs.find(T);
5630 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5630, __PRETTY_FUNCTION__))
;
5631 return I->second;
5632 });
5633}
5634
5635void ASTWriter::AddDeclRef(const Decl *D, RecordDataImpl &Record) {
5636 Record.push_back(GetDeclRef(D));
5637}
5638
5639DeclID ASTWriter::GetDeclRef(const Decl *D) {
5640 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5640, __PRETTY_FUNCTION__))
;
5641
5642 if (!D) {
5643 return 0;
5644 }
5645
5646 // If D comes from an AST file, its declaration ID is already known and
5647 // fixed.
5648 if (D->isFromASTFile())
5649 return D->getGlobalID();
5650
5651 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5651, __PRETTY_FUNCTION__))
;
5652 DeclID &ID = DeclIDs[D];
5653 if (ID == 0) {
5654 if (DoneWritingDeclsAndTypes) {
5655 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5655, __PRETTY_FUNCTION__))
;
5656 return 0;
5657 }
5658
5659 // We haven't seen this declaration before. Give it a new ID and
5660 // enqueue it in the list of declarations to emit.
5661 ID = NextDeclID++;
5662 DeclTypesToEmit.push(const_cast<Decl *>(D));
5663 }
5664
5665 return ID;
5666}
5667
5668DeclID ASTWriter::getDeclID(const Decl *D) {
5669 if (!D)
5670 return 0;
5671
5672 // If D comes from an AST file, its declaration ID is already known and
5673 // fixed.
5674 if (D->isFromASTFile())
5675 return D->getGlobalID();
5676
5677 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5677, __PRETTY_FUNCTION__))
;
5678 return DeclIDs[D];
5679}
5680
5681void ASTWriter::associateDeclWithFile(const Decl *D, DeclID ID) {
5682 assert(ID)((ID) ? static_cast<void> (0) : __assert_fail ("ID", "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5682, __PRETTY_FUNCTION__))
;
5683 assert(D)((D) ? static_cast<void> (0) : __assert_fail ("D", "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5683, __PRETTY_FUNCTION__))
;
5684
5685 SourceLocation Loc = D->getLocation();
5686 if (Loc.isInvalid())
5687 return;
5688
5689 // We only keep track of the file-level declarations of each file.
5690 if (!D->getLexicalDeclContext()->isFileContext())
5691 return;
5692 // FIXME: ParmVarDecls that are part of a function type of a parameter of
5693 // a function/objc method, should not have TU as lexical context.
5694 // TemplateTemplateParmDecls that are part of an alias template, should not
5695 // have TU as lexical context.
5696 if (isa<ParmVarDecl>(D) || isa<TemplateTemplateParmDecl>(D))
5697 return;
5698
5699 SourceManager &SM = Context->getSourceManager();
5700 SourceLocation FileLoc = SM.getFileLoc(Loc);
5701 assert(SM.isLocalSourceLocation(FileLoc))((SM.isLocalSourceLocation(FileLoc)) ? static_cast<void>
(0) : __assert_fail ("SM.isLocalSourceLocation(FileLoc)", "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5701, __PRETTY_FUNCTION__))
;
5702 FileID FID;
5703 unsigned Offset;
5704 std::tie(FID, Offset) = SM.getDecomposedLoc(FileLoc);
5705 if (FID.isInvalid())
5706 return;
5707 assert(SM.getSLocEntry(FID).isFile())((SM.getSLocEntry(FID).isFile()) ? static_cast<void> (0
) : __assert_fail ("SM.getSLocEntry(FID).isFile()", "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5707, __PRETTY_FUNCTION__))
;
5708
5709 DeclIDInFileInfo *&Info = FileDeclIDs[FID];
5710 if (!Info)
5711 Info = new DeclIDInFileInfo();
5712
5713 std::pair<unsigned, serialization::DeclID> LocDecl(Offset, ID);
5714 LocDeclIDsTy &Decls = Info->DeclIDs;
5715
5716 if (Decls.empty() || Decls.back().first <= Offset) {
5717 Decls.push_back(LocDecl);
5718 return;
5719 }
5720
5721 LocDeclIDsTy::iterator I =
5722 llvm::upper_bound(Decls, LocDecl, llvm::less_first());
5723
5724 Decls.insert(I, LocDecl);
5725}
5726
5727void ASTRecordWriter::AddDeclarationName(DeclarationName Name) {
5728 // FIXME: Emit a stable enum for NameKind. 0 = Identifier etc.
5729 Record->push_back(Name.getNameKind());
5730 switch (Name.getNameKind()) {
5731 case DeclarationName::Identifier:
5732 AddIdentifierRef(Name.getAsIdentifierInfo());
5733 break;
5734
5735 case DeclarationName::ObjCZeroArgSelector:
5736 case DeclarationName::ObjCOneArgSelector:
5737 case DeclarationName::ObjCMultiArgSelector:
5738 AddSelectorRef(Name.getObjCSelector());
5739 break;
5740
5741 case DeclarationName::CXXConstructorName:
5742 case DeclarationName::CXXDestructorName:
5743 case DeclarationName::CXXConversionFunctionName:
5744 AddTypeRef(Name.getCXXNameType());
5745 break;
5746
5747 case DeclarationName::CXXDeductionGuideName:
5748 AddDeclRef(Name.getCXXDeductionGuideTemplate());
5749 break;
5750
5751 case DeclarationName::CXXOperatorName:
5752 Record->push_back(Name.getCXXOverloadedOperator());
5753 break;
5754
5755 case DeclarationName::CXXLiteralOperatorName:
5756 AddIdentifierRef(Name.getCXXLiteralIdentifier());
5757 break;
5758
5759 case DeclarationName::CXXUsingDirective:
5760 // No extra data to emit
5761 break;
5762 }
5763}
5764
5765unsigned ASTWriter::getAnonymousDeclarationNumber(const NamedDecl *D) {
5766 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5767, __PRETTY_FUNCTION__))
5767 "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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5767, __PRETTY_FUNCTION__))
;
5768
5769 // Number the anonymous declarations within this context, if we've not
5770 // already done so.
5771 auto It = AnonymousDeclarationNumbers.find(D);
5772 if (It == AnonymousDeclarationNumbers.end()) {
5773 auto *DC = D->getLexicalDeclContext();
5774 numberAnonymousDeclsWithin(DC, [&](const NamedDecl *ND, unsigned Number) {
5775 AnonymousDeclarationNumbers[ND] = Number;
5776 });
5777
5778 It = AnonymousDeclarationNumbers.find(D);
5779 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5780, __PRETTY_FUNCTION__))
5780 "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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5780, __PRETTY_FUNCTION__))
;
5781 }
5782
5783 return It->second;
5784}
5785
5786void ASTRecordWriter::AddDeclarationNameLoc(const DeclarationNameLoc &DNLoc,
5787 DeclarationName Name) {
5788 switch (Name.getNameKind()) {
5789 case DeclarationName::CXXConstructorName:
5790 case DeclarationName::CXXDestructorName:
5791 case DeclarationName::CXXConversionFunctionName:
5792 AddTypeSourceInfo(DNLoc.NamedType.TInfo);
5793 break;
5794
5795 case DeclarationName::CXXOperatorName:
5796 AddSourceLocation(SourceLocation::getFromRawEncoding(
5797 DNLoc.CXXOperatorName.BeginOpNameLoc));
5798 AddSourceLocation(
5799 SourceLocation::getFromRawEncoding(DNLoc.CXXOperatorName.EndOpNameLoc));
5800 break;
5801
5802 case DeclarationName::CXXLiteralOperatorName:
5803 AddSourceLocation(SourceLocation::getFromRawEncoding(
5804 DNLoc.CXXLiteralOperatorName.OpNameLoc));
5805 break;
5806
5807 case DeclarationName::Identifier:
5808 case DeclarationName::ObjCZeroArgSelector:
5809 case DeclarationName::ObjCOneArgSelector:
5810 case DeclarationName::ObjCMultiArgSelector:
5811 case DeclarationName::CXXUsingDirective:
5812 case DeclarationName::CXXDeductionGuideName:
5813 break;
5814 }
5815}
5816
5817void ASTRecordWriter::AddDeclarationNameInfo(
5818 const DeclarationNameInfo &NameInfo) {
5819 AddDeclarationName(NameInfo.getName());
5820 AddSourceLocation(NameInfo.getLoc());
5821 AddDeclarationNameLoc(NameInfo.getInfo(), NameInfo.getName());
5822}
5823
5824void ASTRecordWriter::AddQualifierInfo(const QualifierInfo &Info) {
5825 AddNestedNameSpecifierLoc(Info.QualifierLoc);
5826 Record->push_back(Info.NumTemplParamLists);
5827 for (unsigned i = 0, e = Info.NumTemplParamLists; i != e; ++i)
5828 AddTemplateParameterList(Info.TemplParamLists[i]);
5829}
5830
5831void ASTRecordWriter::AddNestedNameSpecifier(NestedNameSpecifier *NNS) {
5832 // Nested name specifiers usually aren't too long. I think that 8 would
5833 // typically accommodate the vast majority.
5834 SmallVector<NestedNameSpecifier *, 8> NestedNames;
5835
5836 // Push each of the NNS's onto a stack for serialization in reverse order.
5837 while (NNS) {
5838 NestedNames.push_back(NNS);
5839 NNS = NNS->getPrefix();
5840 }
5841
5842 Record->push_back(NestedNames.size());
5843 while(!NestedNames.empty()) {
5844 NNS = NestedNames.pop_back_val();
5845 NestedNameSpecifier::SpecifierKind Kind = NNS->getKind();
5846 Record->push_back(Kind);
5847 switch (Kind) {
5848 case NestedNameSpecifier::Identifier:
5849 AddIdentifierRef(NNS->getAsIdentifier());
5850 break;
5851
5852 case NestedNameSpecifier::Namespace:
5853 AddDeclRef(NNS->getAsNamespace());
5854 break;
5855
5856 case NestedNameSpecifier::NamespaceAlias:
5857 AddDeclRef(NNS->getAsNamespaceAlias());
5858 break;
5859
5860 case NestedNameSpecifier::TypeSpec:
5861 case NestedNameSpecifier::TypeSpecWithTemplate:
5862 AddTypeRef(QualType(NNS->getAsType(), 0));
5863 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5864 break;
5865
5866 case NestedNameSpecifier::Global:
5867 // Don't need to write an associated value.
5868 break;
5869
5870 case NestedNameSpecifier::Super:
5871 AddDeclRef(NNS->getAsRecordDecl());
5872 break;
5873 }
5874 }
5875}
5876
5877void ASTRecordWriter::AddNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS) {
5878 // Nested name specifiers usually aren't too long. I think that 8 would
5879 // typically accommodate the vast majority.
5880 SmallVector<NestedNameSpecifierLoc , 8> NestedNames;
5881
5882 // Push each of the nested-name-specifiers's onto a stack for
5883 // serialization in reverse order.
5884 while (NNS) {
5885 NestedNames.push_back(NNS);
5886 NNS = NNS.getPrefix();
5887 }
5888
5889 Record->push_back(NestedNames.size());
5890 while(!NestedNames.empty()) {
5891 NNS = NestedNames.pop_back_val();
5892 NestedNameSpecifier::SpecifierKind Kind
5893 = NNS.getNestedNameSpecifier()->getKind();
5894 Record->push_back(Kind);
5895 switch (Kind) {
5896 case NestedNameSpecifier::Identifier:
5897 AddIdentifierRef(NNS.getNestedNameSpecifier()->getAsIdentifier());
5898 AddSourceRange(NNS.getLocalSourceRange());
5899 break;
5900
5901 case NestedNameSpecifier::Namespace:
5902 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespace());
5903 AddSourceRange(NNS.getLocalSourceRange());
5904 break;
5905
5906 case NestedNameSpecifier::NamespaceAlias:
5907 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespaceAlias());
5908 AddSourceRange(NNS.getLocalSourceRange());
5909 break;
5910
5911 case NestedNameSpecifier::TypeSpec:
5912 case NestedNameSpecifier::TypeSpecWithTemplate:
5913 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5914 AddTypeRef(NNS.getTypeLoc().getType());
5915 AddTypeLoc(NNS.getTypeLoc());
5916 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5917 break;
5918
5919 case NestedNameSpecifier::Global:
5920 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5921 break;
5922
5923 case NestedNameSpecifier::Super:
5924 AddDeclRef(NNS.getNestedNameSpecifier()->getAsRecordDecl());
5925 AddSourceRange(NNS.getLocalSourceRange());
5926 break;
5927 }
5928 }
5929}
5930
5931void ASTRecordWriter::AddTemplateName(TemplateName Name) {
5932 TemplateName::NameKind Kind = Name.getKind();
5933 Record->push_back(Kind);
5934 switch (Kind) {
5935 case TemplateName::Template:
5936 AddDeclRef(Name.getAsTemplateDecl());
5937 break;
5938
5939 case TemplateName::OverloadedTemplate: {
5940 OverloadedTemplateStorage *OvT = Name.getAsOverloadedTemplate();
5941 Record->push_back(OvT->size());
5942 for (const auto &I : *OvT)
5943 AddDeclRef(I);
5944 break;
5945 }
5946
5947 case TemplateName::AssumedTemplate: {
5948 AssumedTemplateStorage *ADLT = Name.getAsAssumedTemplateName();
5949 AddDeclarationName(ADLT->getDeclName());
5950 break;
5951 }
5952
5953 case TemplateName::QualifiedTemplate: {
5954 QualifiedTemplateName *QualT = Name.getAsQualifiedTemplateName();
5955 AddNestedNameSpecifier(QualT->getQualifier());
5956 Record->push_back(QualT->hasTemplateKeyword());
5957 AddDeclRef(QualT->getTemplateDecl());
5958 break;
5959 }
5960
5961 case TemplateName::DependentTemplate: {
5962 DependentTemplateName *DepT = Name.getAsDependentTemplateName();
5963 AddNestedNameSpecifier(DepT->getQualifier());
5964 Record->push_back(DepT->isIdentifier());
5965 if (DepT->isIdentifier())
5966 AddIdentifierRef(DepT->getIdentifier());
5967 else
5968 Record->push_back(DepT->getOperator());
5969 break;
5970 }
5971
5972 case TemplateName::SubstTemplateTemplateParm: {
5973 SubstTemplateTemplateParmStorage *subst
5974 = Name.getAsSubstTemplateTemplateParm();
5975 AddDeclRef(subst->getParameter());
5976 AddTemplateName(subst->getReplacement());
5977 break;
5978 }
5979
5980 case TemplateName::SubstTemplateTemplateParmPack: {
5981 SubstTemplateTemplateParmPackStorage *SubstPack
5982 = Name.getAsSubstTemplateTemplateParmPack();
5983 AddDeclRef(SubstPack->getParameterPack());
5984 AddTemplateArgument(SubstPack->getArgumentPack());
5985 break;
5986 }
5987 }
5988}
5989
5990void ASTRecordWriter::AddTemplateArgument(const TemplateArgument &Arg) {
5991 Record->push_back(Arg.getKind());
5992 switch (Arg.getKind()) {
5993 case TemplateArgument::Null:
5994 break;
5995 case TemplateArgument::Type:
5996 AddTypeRef(Arg.getAsType());
5997 break;
5998 case TemplateArgument::Declaration:
5999 AddDeclRef(Arg.getAsDecl());
6000 AddTypeRef(Arg.getParamTypeForDecl());
6001 break;
6002 case TemplateArgument::NullPtr:
6003 AddTypeRef(Arg.getNullPtrType());
6004 break;
6005 case TemplateArgument::Integral:
6006 AddAPSInt(Arg.getAsIntegral());
6007 AddTypeRef(Arg.getIntegralType());
6008 break;
6009 case TemplateArgument::Template:
6010 AddTemplateName(Arg.getAsTemplateOrTemplatePattern());
6011 break;
6012 case TemplateArgument::TemplateExpansion:
6013 AddTemplateName(Arg.getAsTemplateOrTemplatePattern());
6014 if (Optional<unsigned> NumExpansions = Arg.getNumTemplateExpansions())
6015 Record->push_back(*NumExpansions + 1);
6016 else
6017 Record->push_back(0);
6018 break;
6019 case TemplateArgument::Expression:
6020 AddStmt(Arg.getAsExpr());
6021 break;
6022 case TemplateArgument::Pack:
6023 Record->push_back(Arg.pack_size());
6024 for (const auto &P : Arg.pack_elements())
6025 AddTemplateArgument(P);
6026 break;
6027 }
6028}
6029
6030void ASTRecordWriter::AddTemplateParameterList(
6031 const TemplateParameterList *TemplateParams) {
6032 assert(TemplateParams && "No TemplateParams!")((TemplateParams && "No TemplateParams!") ? static_cast
<void> (0) : __assert_fail ("TemplateParams && \"No TemplateParams!\""
, "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6032, __PRETTY_FUNCTION__))
;
6033 AddSourceLocation(TemplateParams->getTemplateLoc());
6034 AddSourceLocation(TemplateParams->getLAngleLoc());
6035 AddSourceLocation(TemplateParams->getRAngleLoc());
6036 // TODO: Concepts
6037 Record->push_back(TemplateParams->size());
6038 for (const auto &P : *TemplateParams)
6039 AddDeclRef(P);
6040}
6041
6042/// Emit a template argument list.
6043void ASTRecordWriter::AddTemplateArgumentList(
6044 const TemplateArgumentList *TemplateArgs) {
6045 assert(TemplateArgs && "No TemplateArgs!")((TemplateArgs && "No TemplateArgs!") ? static_cast<
void> (0) : __assert_fail ("TemplateArgs && \"No TemplateArgs!\""
, "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6045, __PRETTY_FUNCTION__))
;
6046 Record->push_back(TemplateArgs->size());
6047 for (int i = 0, e = TemplateArgs->size(); i != e; ++i)
6048 AddTemplateArgument(TemplateArgs->get(i));
6049}
6050
6051void ASTRecordWriter::AddASTTemplateArgumentListInfo(
6052 const ASTTemplateArgumentListInfo *ASTTemplArgList) {
6053 assert(ASTTemplArgList && "No ASTTemplArgList!")((ASTTemplArgList && "No ASTTemplArgList!") ? static_cast
<void> (0) : __assert_fail ("ASTTemplArgList && \"No ASTTemplArgList!\""
, "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6053, __PRETTY_FUNCTION__))
;
6054 AddSourceLocation(ASTTemplArgList->LAngleLoc);
6055 AddSourceLocation(ASTTemplArgList->RAngleLoc);
6056 Record->push_back(ASTTemplArgList->NumTemplateArgs);
6057 const TemplateArgumentLoc *TemplArgs = ASTTemplArgList->getTemplateArgs();
6058 for (int i = 0, e = ASTTemplArgList->NumTemplateArgs; i != e; ++i)
6059 AddTemplateArgumentLoc(TemplArgs[i]);
6060}
6061
6062void ASTRecordWriter::AddUnresolvedSet(const ASTUnresolvedSet &Set) {
6063 Record->push_back(Set.size());
6064 for (ASTUnresolvedSet::const_iterator
6065 I = Set.begin(), E = Set.end(); I != E; ++I) {
6066 AddDeclRef(I.getDecl());
6067 Record->push_back(I.getAccess());
6068 }
6069}
6070
6071// FIXME: Move this out of the main ASTRecordWriter interface.
6072void ASTRecordWriter::AddCXXBaseSpecifier(const CXXBaseSpecifier &Base) {
6073 Record->push_back(Base.isVirtual());
6074 Record->push_back(Base.isBaseOfClass());
6075 Record->push_back(Base.getAccessSpecifierAsWritten());
6076 Record->push_back(Base.getInheritConstructors());
6077 AddTypeSourceInfo(Base.getTypeSourceInfo());
6078 AddSourceRange(Base.getSourceRange());
6079 AddSourceLocation(Base.isPackExpansion()? Base.getEllipsisLoc()
6080 : SourceLocation());
6081}
6082
6083static uint64_t EmitCXXBaseSpecifiers(ASTWriter &W,
6084 ArrayRef<CXXBaseSpecifier> Bases) {
6085 ASTWriter::RecordData Record;
6086 ASTRecordWriter Writer(W, Record);
6087 Writer.push_back(Bases.size());
6088
6089 for (auto &Base : Bases)
6090 Writer.AddCXXBaseSpecifier(Base);
6091
6092 return Writer.Emit(serialization::DECL_CXX_BASE_SPECIFIERS);
6093}
6094
6095// FIXME: Move this out of the main ASTRecordWriter interface.
6096void ASTRecordWriter::AddCXXBaseSpecifiers(ArrayRef<CXXBaseSpecifier> Bases) {
6097 AddOffset(EmitCXXBaseSpecifiers(*Writer, Bases));
6098}
6099
6100static uint64_t
6101EmitCXXCtorInitializers(ASTWriter &W,
6102 ArrayRef<CXXCtorInitializer *> CtorInits) {
6103 ASTWriter::RecordData Record;
6104 ASTRecordWriter Writer(W, Record);
6105 Writer.push_back(CtorInits.size());
6106
6107 for (auto *Init : CtorInits) {
6108 if (Init->isBaseInitializer()) {
6109 Writer.push_back(CTOR_INITIALIZER_BASE);
6110 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
6111 Writer.push_back(Init->isBaseVirtual());
6112 } else if (Init->isDelegatingInitializer()) {
6113 Writer.push_back(CTOR_INITIALIZER_DELEGATING);
6114 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
6115 } else if (Init->isMemberInitializer()){
6116 Writer.push_back(CTOR_INITIALIZER_MEMBER);
6117 Writer.AddDeclRef(Init->getMember());
6118 } else {
6119 Writer.push_back(CTOR_INITIALIZER_INDIRECT_MEMBER);
6120 Writer.AddDeclRef(Init->getIndirectMember());
6121 }
6122
6123 Writer.AddSourceLocation(Init->getMemberLocation());
6124 Writer.AddStmt(Init->getInit());
6125 Writer.AddSourceLocation(Init->getLParenLoc());
6126 Writer.AddSourceLocation(Init->getRParenLoc());
6127 Writer.push_back(Init->isWritten());
6128 if (Init->isWritten())
6129 Writer.push_back(Init->getSourceOrder());
6130 }
6131
6132 return Writer.Emit(serialization::DECL_CXX_CTOR_INITIALIZERS);
6133}
6134
6135// FIXME: Move this out of the main ASTRecordWriter interface.
6136void ASTRecordWriter::AddCXXCtorInitializers(
6137 ArrayRef<CXXCtorInitializer *> CtorInits) {
6138 AddOffset(EmitCXXCtorInitializers(*Writer, CtorInits));
6139}
6140
6141void ASTRecordWriter::AddCXXDefinitionData(const CXXRecordDecl *D) {
6142 auto &Data = D->data();
6143 Record->push_back(Data.IsLambda);
6144
6145 #define FIELD(Name, Width, Merge) \
6146 Record->push_back(Data.Name);
6147 #include "clang/AST/CXXRecordDeclDefinitionBits.def"
6148
6149 // getODRHash will compute the ODRHash if it has not been previously computed.
6150 Record->push_back(D->getODRHash());
6151 bool ModulesDebugInfo = Writer->Context->getLangOpts().ModulesDebugInfo &&
6152 Writer->WritingModule && !D->isDependentType();
6153 Record->push_back(ModulesDebugInfo);
6154 if (ModulesDebugInfo)
6155 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(D));
6156
6157 // IsLambda bit is already saved.
6158
6159 Record->push_back(Data.NumBases);
6160 if (Data.NumBases > 0)
6161 AddCXXBaseSpecifiers(Data.bases());
6162
6163 // FIXME: Make VBases lazily computed when needed to avoid storing them.
6164 Record->push_back(Data.NumVBases);
6165 if (Data.NumVBases > 0)
6166 AddCXXBaseSpecifiers(Data.vbases());
6167
6168 AddUnresolvedSet(Data.Conversions.get(*Writer->Context));
6169 Record->push_back(Data.ComputedVisibleConversions);
6170 if (Data.ComputedVisibleConversions)
6171 AddUnresolvedSet(Data.VisibleConversions.get(*Writer->Context));
6172 // Data.Definition is the owning decl, no need to write it.
6173 AddDeclRef(D->getFirstFriend());
6174
6175 // Add lambda-specific data.
6176 if (Data.IsLambda) {
6177 auto &Lambda = D->getLambdaData();
6178 Record->push_back(Lambda.Dependent);
6179 Record->push_back(Lambda.IsGenericLambda);
6180 Record->push_back(Lambda.CaptureDefault);
6181 Record->push_back(Lambda.NumCaptures);
6182 Record->push_back(Lambda.NumExplicitCaptures);
6183 Record->push_back(Lambda.ManglingNumber);
6184 AddDeclRef(D->getLambdaContextDecl());
6185 AddTypeSourceInfo(Lambda.MethodTyInfo);
6186 for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
6187 const LambdaCapture &Capture = Lambda.Captures[I];
6188 AddSourceLocation(Capture.getLocation());
6189 Record->push_back(Capture.isImplicit());
6190 Record->push_back(Capture.getCaptureKind());
6191 switch (Capture.getCaptureKind()) {
6192 case LCK_StarThis:
6193 case LCK_This:
6194 case LCK_VLAType:
6195 break;
6196 case LCK_ByCopy:
6197 case LCK_ByRef:
6198 VarDecl *Var =
6199 Capture.capturesVariable() ? Capture.getCapturedVar() : nullptr;
6200 AddDeclRef(Var);
6201 AddSourceLocation(Capture.isPackExpansion() ? Capture.getEllipsisLoc()
6202 : SourceLocation());
6203 break;
6204 }
6205 }
6206 }
6207}
6208
6209void ASTWriter::ReaderInitialized(ASTReader *Reader) {
6210 assert(Reader && "Cannot remove chain")((Reader && "Cannot remove chain") ? static_cast<void
> (0) : __assert_fail ("Reader && \"Cannot remove chain\""
, "/build/llvm-toolchain-snapshot-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6210, __PRETTY_FUNCTION__))
;
6211 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6211, __PRETTY_FUNCTION__))
;
6212 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6218, __PRETTY_FUNCTION__))
6213 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-10~svn374877/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6218, __PRETTY_FUNCTION__))
6214 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.\""
, "/b