Bug Summary

File:tools/clang/lib/Serialization/ASTWriter.cpp
Warning:line 2085, 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-eagerly-assume -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 -mrelocation-model pic -pic-level 2 -mthread-model posix -relaxed-aliasing -fmath-errno -masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array -target-cpu x86-64 -dwarf-column-info -debugger-tuning=gdb -momit-leaf-frame-pointer -ffunction-sections -fdata-sections -resource-dir /usr/lib/llvm-7/lib/clang/7.0.0 -D _DEBUG -D _GNU_SOURCE -D __STDC_CONSTANT_MACROS -D __STDC_FORMAT_MACROS -D __STDC_LIMIT_MACROS -I /build/llvm-toolchain-snapshot-7~svn329677/build-llvm/tools/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-7~svn329677/tools/clang/include -I /build/llvm-toolchain-snapshot-7~svn329677/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-7~svn329677/build-llvm/include -I /build/llvm-toolchain-snapshot-7~svn329677/include -U NDEBUG -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/x86_64-linux-gnu/c++/7.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/x86_64-linux-gnu/c++/7.3.0 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/7.3.0/../../../../include/c++/7.3.0/backward -internal-isystem /usr/include/clang/7.0.0/include/ -internal-isystem /usr/local/include -internal-isystem /usr/lib/llvm-7/lib/clang/7.0.0/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++11 -fdeprecated-macro -fdebug-compilation-dir /build/llvm-toolchain-snapshot-7~svn329677/build-llvm/tools/clang/lib/Serialization -ferror-limit 19 -fmessage-length 0 -fvisibility-inlines-hidden -fobjc-runtime=gcc -fno-common -fdiagnostics-show-option -vectorize-loops -vectorize-slp -analyzer-checker optin.performance.Padding -analyzer-output=html -analyzer-config stable-report-filename=true -o /tmp/scan-build-2018-04-11-031539-24776-1 -x c++ /build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp
1//===- ASTWriter.cpp - AST File Writer ------------------------------------===//
2//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file defines the ASTWriter class, which writes AST files.
11//
12//===----------------------------------------------------------------------===//
13
14#include "clang/Serialization/ASTWriter.h"
15#include "ASTCommon.h"
16#include "ASTReaderInternals.h"
17#include "MultiOnDiskHashTable.h"
18#include "clang/AST/ASTContext.h"
19#include "clang/AST/ASTUnresolvedSet.h"
20#include "clang/AST/Attr.h"
21#include "clang/AST/Decl.h"
22#include "clang/AST/DeclBase.h"
23#include "clang/AST/DeclCXX.h"
24#include "clang/AST/DeclContextInternals.h"
25#include "clang/AST/DeclFriend.h"
26#include "clang/AST/DeclObjC.h"
27#include "clang/AST/DeclTemplate.h"
28#include "clang/AST/DeclarationName.h"
29#include "clang/AST/Expr.h"
30#include "clang/AST/ExprCXX.h"
31#include "clang/AST/LambdaCapture.h"
32#include "clang/AST/NestedNameSpecifier.h"
33#include "clang/AST/RawCommentList.h"
34#include "clang/AST/TemplateName.h"
35#include "clang/AST/Type.h"
36#include "clang/AST/TypeLocVisitor.h"
37#include "clang/Basic/Diagnostic.h"
38#include "clang/Basic/DiagnosticOptions.h"
39#include "clang/Basic/FileManager.h"
40#include "clang/Basic/FileSystemOptions.h"
41#include "clang/Basic/IdentifierTable.h"
42#include "clang/Basic/LLVM.h"
43#include "clang/Basic/Lambda.h"
44#include "clang/Basic/LangOptions.h"
45#include "clang/Basic/MemoryBufferCache.h"
46#include "clang/Basic/Module.h"
47#include "clang/Basic/ObjCRuntime.h"
48#include "clang/Basic/OpenCLOptions.h"
49#include "clang/Basic/SourceLocation.h"
50#include "clang/Basic/SourceManager.h"
51#include "clang/Basic/SourceManagerInternals.h"
52#include "clang/Basic/Specifiers.h"
53#include "clang/Basic/TargetInfo.h"
54#include "clang/Basic/TargetOptions.h"
55#include "clang/Basic/Version.h"
56#include "clang/Basic/VersionTuple.h"
57#include "clang/Lex/HeaderSearch.h"
58#include "clang/Lex/HeaderSearchOptions.h"
59#include "clang/Lex/MacroInfo.h"
60#include "clang/Lex/ModuleMap.h"
61#include "clang/Lex/PreprocessingRecord.h"
62#include "clang/Lex/Preprocessor.h"
63#include "clang/Lex/PreprocessorOptions.h"
64#include "clang/Lex/Token.h"
65#include "clang/Sema/IdentifierResolver.h"
66#include "clang/Sema/ObjCMethodList.h"
67#include "clang/Sema/Sema.h"
68#include "clang/Sema/Weak.h"
69#include "clang/Serialization/ASTReader.h"
70#include "clang/Serialization/Module.h"
71#include "clang/Serialization/ModuleFileExtension.h"
72#include "clang/Serialization/SerializationDiagnostic.h"
73#include "llvm/ADT/APFloat.h"
74#include "llvm/ADT/APInt.h"
75#include "llvm/ADT/APSInt.h"
76#include "llvm/ADT/ArrayRef.h"
77#include "llvm/ADT/DenseMap.h"
78#include "llvm/ADT/Hashing.h"
79#include "llvm/ADT/Optional.h"
80#include "llvm/ADT/PointerIntPair.h"
81#include "llvm/ADT/STLExtras.h"
82#include "llvm/ADT/SmallSet.h"
83#include "llvm/ADT/SmallString.h"
84#include "llvm/ADT/SmallVector.h"
85#include "llvm/ADT/StringMap.h"
86#include "llvm/ADT/StringRef.h"
87#include "llvm/Bitcode/BitCodes.h"
88#include "llvm/Bitcode/BitstreamWriter.h"
89#include "llvm/Support/Casting.h"
90#include "llvm/Support/Compression.h"
91#include "llvm/Support/DJB.h"
92#include "llvm/Support/Endian.h"
93#include "llvm/Support/EndianStream.h"
94#include "llvm/Support/Error.h"
95#include "llvm/Support/ErrorHandling.h"
96#include "llvm/Support/MemoryBuffer.h"
97#include "llvm/Support/OnDiskHashTable.h"
98#include "llvm/Support/Path.h"
99#include "llvm/Support/SHA1.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 /// \brief Type code that corresponds to the record generated.
142 TypeCode Code = static_cast<TypeCode>(0);
143
144 /// \brief 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.def"
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.def"
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-7~svn329677/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 Code = TYPE_CONSTANT_ARRAY;
242}
243
244void ASTTypeWriter::VisitIncompleteArrayType(const IncompleteArrayType *T) {
245 VisitArrayType(T);
246 Code = TYPE_INCOMPLETE_ARRAY;
247}
248
249void ASTTypeWriter::VisitVariableArrayType(const VariableArrayType *T) {
250 VisitArrayType(T);
251 Record.AddSourceLocation(T->getLBracketLoc());
252 Record.AddSourceLocation(T->getRBracketLoc());
253 Record.AddStmt(T->getSizeExpr());
254 Code = TYPE_VARIABLE_ARRAY;
255}
256
257void ASTTypeWriter::VisitVectorType(const VectorType *T) {
258 Record.AddTypeRef(T->getElementType());
259 Record.push_back(T->getNumElements());
260 Record.push_back(T->getVectorKind());
261 Code = TYPE_VECTOR;
262}
263
264void ASTTypeWriter::VisitExtVectorType(const ExtVectorType *T) {
265 VisitVectorType(T);
266 Code = TYPE_EXT_VECTOR;
267}
268
269void ASTTypeWriter::VisitFunctionType(const FunctionType *T) {
270 Record.AddTypeRef(T->getReturnType());
271 FunctionType::ExtInfo C = T->getExtInfo();
272 Record.push_back(C.getNoReturn());
273 Record.push_back(C.getHasRegParm());
274 Record.push_back(C.getRegParm());
275 // FIXME: need to stabilize encoding of calling convention...
276 Record.push_back(C.getCC());
277 Record.push_back(C.getProducesResult());
278 Record.push_back(C.getNoCallerSavedRegs());
279 Record.push_back(C.getNoCfCheck());
280
281 if (C.getHasRegParm() || C.getRegParm() || C.getProducesResult())
282 AbbrevToUse = 0;
283}
284
285void ASTTypeWriter::VisitFunctionNoProtoType(const FunctionNoProtoType *T) {
286 VisitFunctionType(T);
287 Code = TYPE_FUNCTION_NO_PROTO;
288}
289
290static void addExceptionSpec(const FunctionProtoType *T,
291 ASTRecordWriter &Record) {
292 Record.push_back(T->getExceptionSpecType());
293 if (T->getExceptionSpecType() == EST_Dynamic) {
294 Record.push_back(T->getNumExceptions());
295 for (unsigned I = 0, N = T->getNumExceptions(); I != N; ++I)
296 Record.AddTypeRef(T->getExceptionType(I));
297 } else if (T->getExceptionSpecType() == EST_ComputedNoexcept) {
298 Record.AddStmt(T->getNoexceptExpr());
299 } else if (T->getExceptionSpecType() == EST_Uninstantiated) {
300 Record.AddDeclRef(T->getExceptionSpecDecl());
301 Record.AddDeclRef(T->getExceptionSpecTemplate());
302 } else if (T->getExceptionSpecType() == EST_Unevaluated) {
303 Record.AddDeclRef(T->getExceptionSpecDecl());
304 }
305}
306
307void ASTTypeWriter::VisitFunctionProtoType(const FunctionProtoType *T) {
308 VisitFunctionType(T);
309
310 Record.push_back(T->isVariadic());
311 Record.push_back(T->hasTrailingReturn());
312 Record.push_back(T->getTypeQuals());
313 Record.push_back(static_cast<unsigned>(T->getRefQualifier()));
314 addExceptionSpec(T, Record);
315
316 Record.push_back(T->getNumParams());
317 for (unsigned I = 0, N = T->getNumParams(); I != N; ++I)
318 Record.AddTypeRef(T->getParamType(I));
319
320 if (T->hasExtParameterInfos()) {
321 for (unsigned I = 0, N = T->getNumParams(); I != N; ++I)
322 Record.push_back(T->getExtParameterInfo(I).getOpaqueValue());
323 }
324
325 if (T->isVariadic() || T->hasTrailingReturn() || T->getTypeQuals() ||
326 T->getRefQualifier() || T->getExceptionSpecType() != EST_None ||
327 T->hasExtParameterInfos())
328 AbbrevToUse = 0;
329
330 Code = TYPE_FUNCTION_PROTO;
331}
332
333void ASTTypeWriter::VisitUnresolvedUsingType(const UnresolvedUsingType *T) {
334 Record.AddDeclRef(T->getDecl());
335 Code = TYPE_UNRESOLVED_USING;
336}
337
338void ASTTypeWriter::VisitTypedefType(const TypedefType *T) {
339 Record.AddDeclRef(T->getDecl());
340 assert(!T->isCanonicalUnqualified() && "Invalid typedef ?")(static_cast <bool> (!T->isCanonicalUnqualified() &&
"Invalid typedef ?") ? void (0) : __assert_fail ("!T->isCanonicalUnqualified() && \"Invalid typedef ?\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 340, __extension__ __PRETTY_FUNCTION__))
;
341 Record.AddTypeRef(T->getCanonicalTypeInternal());
342 Code = TYPE_TYPEDEF;
343}
344
345void ASTTypeWriter::VisitTypeOfExprType(const TypeOfExprType *T) {
346 Record.AddStmt(T->getUnderlyingExpr());
347 Code = TYPE_TYPEOF_EXPR;
348}
349
350void ASTTypeWriter::VisitTypeOfType(const TypeOfType *T) {
351 Record.AddTypeRef(T->getUnderlyingType());
352 Code = TYPE_TYPEOF;
353}
354
355void ASTTypeWriter::VisitDecltypeType(const DecltypeType *T) {
356 Record.AddTypeRef(T->getUnderlyingType());
357 Record.AddStmt(T->getUnderlyingExpr());
358 Code = TYPE_DECLTYPE;
359}
360
361void ASTTypeWriter::VisitUnaryTransformType(const UnaryTransformType *T) {
362 Record.AddTypeRef(T->getBaseType());
363 Record.AddTypeRef(T->getUnderlyingType());
364 Record.push_back(T->getUTTKind());
365 Code = TYPE_UNARY_TRANSFORM;
366}
367
368void ASTTypeWriter::VisitAutoType(const AutoType *T) {
369 Record.AddTypeRef(T->getDeducedType());
370 Record.push_back((unsigned)T->getKeyword());
371 if (T->getDeducedType().isNull())
372 Record.push_back(T->isDependentType());
373 Code = TYPE_AUTO;
374}
375
376void ASTTypeWriter::VisitDeducedTemplateSpecializationType(
377 const DeducedTemplateSpecializationType *T) {
378 Record.AddTemplateName(T->getTemplateName());
379 Record.AddTypeRef(T->getDeducedType());
380 if (T->getDeducedType().isNull())
381 Record.push_back(T->isDependentType());
382 Code = TYPE_DEDUCED_TEMPLATE_SPECIALIZATION;
383}
384
385void ASTTypeWriter::VisitTagType(const TagType *T) {
386 Record.push_back(T->isDependentType());
387 Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
388 assert(!T->isBeingDefined() &&(static_cast <bool> (!T->isBeingDefined() &&
"Cannot serialize in the middle of a type definition") ? void
(0) : __assert_fail ("!T->isBeingDefined() && \"Cannot serialize in the middle of a type definition\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 389, __extension__ __PRETTY_FUNCTION__))
389 "Cannot serialize in the middle of a type definition")(static_cast <bool> (!T->isBeingDefined() &&
"Cannot serialize in the middle of a type definition") ? void
(0) : __assert_fail ("!T->isBeingDefined() && \"Cannot serialize in the middle of a type definition\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 389, __extension__ __PRETTY_FUNCTION__))
;
390}
391
392void ASTTypeWriter::VisitRecordType(const RecordType *T) {
393 VisitTagType(T);
394 Code = TYPE_RECORD;
395}
396
397void ASTTypeWriter::VisitEnumType(const EnumType *T) {
398 VisitTagType(T);
399 Code = TYPE_ENUM;
400}
401
402void ASTTypeWriter::VisitAttributedType(const AttributedType *T) {
403 Record.AddTypeRef(T->getModifiedType());
404 Record.AddTypeRef(T->getEquivalentType());
405 Record.push_back(T->getAttrKind());
406 Code = TYPE_ATTRIBUTED;
407}
408
409void
410ASTTypeWriter::VisitSubstTemplateTypeParmType(
411 const SubstTemplateTypeParmType *T) {
412 Record.AddTypeRef(QualType(T->getReplacedParameter(), 0));
413 Record.AddTypeRef(T->getReplacementType());
414 Code = TYPE_SUBST_TEMPLATE_TYPE_PARM;
415}
416
417void
418ASTTypeWriter::VisitSubstTemplateTypeParmPackType(
419 const SubstTemplateTypeParmPackType *T) {
420 Record.AddTypeRef(QualType(T->getReplacedParameter(), 0));
421 Record.AddTemplateArgument(T->getArgumentPack());
422 Code = TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK;
423}
424
425void
426ASTTypeWriter::VisitTemplateSpecializationType(
427 const TemplateSpecializationType *T) {
428 Record.push_back(T->isDependentType());
429 Record.AddTemplateName(T->getTemplateName());
430 Record.push_back(T->getNumArgs());
431 for (const auto &ArgI : *T)
432 Record.AddTemplateArgument(ArgI);
433 Record.AddTypeRef(T->isTypeAlias() ? T->getAliasedType()
434 : T->isCanonicalUnqualified()
435 ? QualType()
436 : T->getCanonicalTypeInternal());
437 Code = TYPE_TEMPLATE_SPECIALIZATION;
438}
439
440void
441ASTTypeWriter::VisitDependentSizedArrayType(const DependentSizedArrayType *T) {
442 VisitArrayType(T);
443 Record.AddStmt(T->getSizeExpr());
444 Record.AddSourceRange(T->getBracketsRange());
445 Code = TYPE_DEPENDENT_SIZED_ARRAY;
446}
447
448void
449ASTTypeWriter::VisitDependentSizedExtVectorType(
450 const DependentSizedExtVectorType *T) {
451 Record.AddTypeRef(T->getElementType());
452 Record.AddStmt(T->getSizeExpr());
453 Record.AddSourceLocation(T->getAttributeLoc());
454 Code = TYPE_DEPENDENT_SIZED_EXT_VECTOR;
455}
456
457void
458ASTTypeWriter::VisitDependentAddressSpaceType(
459 const DependentAddressSpaceType *T) {
460 Record.AddTypeRef(T->getPointeeType());
461 Record.AddStmt(T->getAddrSpaceExpr());
462 Record.AddSourceLocation(T->getAttributeLoc());
463 Code = TYPE_DEPENDENT_ADDRESS_SPACE;
464}
465
466void
467ASTTypeWriter::VisitTemplateTypeParmType(const TemplateTypeParmType *T) {
468 Record.push_back(T->getDepth());
469 Record.push_back(T->getIndex());
470 Record.push_back(T->isParameterPack());
471 Record.AddDeclRef(T->getDecl());
472 Code = TYPE_TEMPLATE_TYPE_PARM;
473}
474
475void
476ASTTypeWriter::VisitDependentNameType(const DependentNameType *T) {
477 Record.push_back(T->getKeyword());
478 Record.AddNestedNameSpecifier(T->getQualifier());
479 Record.AddIdentifierRef(T->getIdentifier());
480 Record.AddTypeRef(
481 T->isCanonicalUnqualified() ? QualType() : T->getCanonicalTypeInternal());
482 Code = TYPE_DEPENDENT_NAME;
483}
484
485void
486ASTTypeWriter::VisitDependentTemplateSpecializationType(
487 const DependentTemplateSpecializationType *T) {
488 Record.push_back(T->getKeyword());
489 Record.AddNestedNameSpecifier(T->getQualifier());
490 Record.AddIdentifierRef(T->getIdentifier());
491 Record.push_back(T->getNumArgs());
492 for (const auto &I : *T)
493 Record.AddTemplateArgument(I);
494 Code = TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION;
495}
496
497void ASTTypeWriter::VisitPackExpansionType(const PackExpansionType *T) {
498 Record.AddTypeRef(T->getPattern());
499 if (Optional<unsigned> NumExpansions = T->getNumExpansions())
500 Record.push_back(*NumExpansions + 1);
501 else
502 Record.push_back(0);
503 Code = TYPE_PACK_EXPANSION;
504}
505
506void ASTTypeWriter::VisitParenType(const ParenType *T) {
507 Record.AddTypeRef(T->getInnerType());
508 Code = TYPE_PAREN;
509}
510
511void ASTTypeWriter::VisitElaboratedType(const ElaboratedType *T) {
512 Record.push_back(T->getKeyword());
513 Record.AddNestedNameSpecifier(T->getQualifier());
514 Record.AddTypeRef(T->getNamedType());
515 Code = TYPE_ELABORATED;
516}
517
518void ASTTypeWriter::VisitInjectedClassNameType(const InjectedClassNameType *T) {
519 Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
520 Record.AddTypeRef(T->getInjectedSpecializationType());
521 Code = TYPE_INJECTED_CLASS_NAME;
522}
523
524void ASTTypeWriter::VisitObjCInterfaceType(const ObjCInterfaceType *T) {
525 Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
526 Code = TYPE_OBJC_INTERFACE;
527}
528
529void ASTTypeWriter::VisitObjCTypeParamType(const ObjCTypeParamType *T) {
530 Record.AddDeclRef(T->getDecl());
531 Record.push_back(T->getNumProtocols());
532 for (const auto *I : T->quals())
533 Record.AddDeclRef(I);
534 Code = TYPE_OBJC_TYPE_PARAM;
535}
536
537void ASTTypeWriter::VisitObjCObjectType(const ObjCObjectType *T) {
538 Record.AddTypeRef(T->getBaseType());
539 Record.push_back(T->getTypeArgsAsWritten().size());
540 for (auto TypeArg : T->getTypeArgsAsWritten())
541 Record.AddTypeRef(TypeArg);
542 Record.push_back(T->getNumProtocols());
543 for (const auto *I : T->quals())
544 Record.AddDeclRef(I);
545 Record.push_back(T->isKindOfTypeAsWritten());
546 Code = TYPE_OBJC_OBJECT;
547}
548
549void
550ASTTypeWriter::VisitObjCObjectPointerType(const ObjCObjectPointerType *T) {
551 Record.AddTypeRef(T->getPointeeType());
552 Code = TYPE_OBJC_OBJECT_POINTER;
553}
554
555void
556ASTTypeWriter::VisitAtomicType(const AtomicType *T) {
557 Record.AddTypeRef(T->getValueType());
558 Code = TYPE_ATOMIC;
559}
560
561void
562ASTTypeWriter::VisitPipeType(const PipeType *T) {
563 Record.AddTypeRef(T->getElementType());
564 Record.push_back(T->isReadOnly());
565 Code = TYPE_PIPE;
566}
567
568namespace {
569
570class TypeLocWriter : public TypeLocVisitor<TypeLocWriter> {
571 ASTRecordWriter &Record;
572
573public:
574 TypeLocWriter(ASTRecordWriter &Record) : Record(Record) {}
575
576#define ABSTRACT_TYPELOC(CLASS, PARENT)
577#define TYPELOC(CLASS, PARENT) \
578 void Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc);
579#include "clang/AST/TypeLocNodes.def"
580
581 void VisitArrayTypeLoc(ArrayTypeLoc TyLoc);
582 void VisitFunctionTypeLoc(FunctionTypeLoc TyLoc);
583};
584
585} // namespace
586
587void TypeLocWriter::VisitQualifiedTypeLoc(QualifiedTypeLoc TL) {
588 // nothing to do
589}
590
591void TypeLocWriter::VisitBuiltinTypeLoc(BuiltinTypeLoc TL) {
592 Record.AddSourceLocation(TL.getBuiltinLoc());
593 if (TL.needsExtraLocalData()) {
594 Record.push_back(TL.getWrittenTypeSpec());
595 Record.push_back(TL.getWrittenSignSpec());
596 Record.push_back(TL.getWrittenWidthSpec());
597 Record.push_back(TL.hasModeAttr());
598 }
599}
600
601void TypeLocWriter::VisitComplexTypeLoc(ComplexTypeLoc TL) {
602 Record.AddSourceLocation(TL.getNameLoc());
603}
604
605void TypeLocWriter::VisitPointerTypeLoc(PointerTypeLoc TL) {
606 Record.AddSourceLocation(TL.getStarLoc());
607}
608
609void TypeLocWriter::VisitDecayedTypeLoc(DecayedTypeLoc TL) {
610 // nothing to do
611}
612
613void TypeLocWriter::VisitAdjustedTypeLoc(AdjustedTypeLoc TL) {
614 // nothing to do
615}
616
617void TypeLocWriter::VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL) {
618 Record.AddSourceLocation(TL.getCaretLoc());
619}
620
621void TypeLocWriter::VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL) {
622 Record.AddSourceLocation(TL.getAmpLoc());
623}
624
625void TypeLocWriter::VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL) {
626 Record.AddSourceLocation(TL.getAmpAmpLoc());
627}
628
629void TypeLocWriter::VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL) {
630 Record.AddSourceLocation(TL.getStarLoc());
631 Record.AddTypeSourceInfo(TL.getClassTInfo());
632}
633
634void TypeLocWriter::VisitArrayTypeLoc(ArrayTypeLoc TL) {
635 Record.AddSourceLocation(TL.getLBracketLoc());
636 Record.AddSourceLocation(TL.getRBracketLoc());
637 Record.push_back(TL.getSizeExpr() ? 1 : 0);
638 if (TL.getSizeExpr())
639 Record.AddStmt(TL.getSizeExpr());
640}
641
642void TypeLocWriter::VisitConstantArrayTypeLoc(ConstantArrayTypeLoc TL) {
643 VisitArrayTypeLoc(TL);
644}
645
646void TypeLocWriter::VisitIncompleteArrayTypeLoc(IncompleteArrayTypeLoc TL) {
647 VisitArrayTypeLoc(TL);
648}
649
650void TypeLocWriter::VisitVariableArrayTypeLoc(VariableArrayTypeLoc TL) {
651 VisitArrayTypeLoc(TL);
652}
653
654void TypeLocWriter::VisitDependentSizedArrayTypeLoc(
655 DependentSizedArrayTypeLoc TL) {
656 VisitArrayTypeLoc(TL);
657}
658
659void TypeLocWriter::VisitDependentAddressSpaceTypeLoc(
660 DependentAddressSpaceTypeLoc TL) {
661 Record.AddSourceLocation(TL.getAttrNameLoc());
662 SourceRange range = TL.getAttrOperandParensRange();
663 Record.AddSourceLocation(range.getBegin());
664 Record.AddSourceLocation(range.getEnd());
665 Record.AddStmt(TL.getAttrExprOperand());
666}
667
668void TypeLocWriter::VisitDependentSizedExtVectorTypeLoc(
669 DependentSizedExtVectorTypeLoc TL) {
670 Record.AddSourceLocation(TL.getNameLoc());
671}
672
673void TypeLocWriter::VisitVectorTypeLoc(VectorTypeLoc TL) {
674 Record.AddSourceLocation(TL.getNameLoc());
675}
676
677void TypeLocWriter::VisitExtVectorTypeLoc(ExtVectorTypeLoc TL) {
678 Record.AddSourceLocation(TL.getNameLoc());
679}
680
681void TypeLocWriter::VisitFunctionTypeLoc(FunctionTypeLoc TL) {
682 Record.AddSourceLocation(TL.getLocalRangeBegin());
683 Record.AddSourceLocation(TL.getLParenLoc());
684 Record.AddSourceLocation(TL.getRParenLoc());
685 Record.AddSourceRange(TL.getExceptionSpecRange());
686 Record.AddSourceLocation(TL.getLocalRangeEnd());
687 for (unsigned i = 0, e = TL.getNumParams(); i != e; ++i)
688 Record.AddDeclRef(TL.getParam(i));
689}
690
691void TypeLocWriter::VisitFunctionProtoTypeLoc(FunctionProtoTypeLoc TL) {
692 VisitFunctionTypeLoc(TL);
693}
694
695void TypeLocWriter::VisitFunctionNoProtoTypeLoc(FunctionNoProtoTypeLoc TL) {
696 VisitFunctionTypeLoc(TL);
697}
698
699void TypeLocWriter::VisitUnresolvedUsingTypeLoc(UnresolvedUsingTypeLoc TL) {
700 Record.AddSourceLocation(TL.getNameLoc());
701}
702
703void TypeLocWriter::VisitTypedefTypeLoc(TypedefTypeLoc TL) {
704 Record.AddSourceLocation(TL.getNameLoc());
705}
706
707void TypeLocWriter::VisitObjCTypeParamTypeLoc(ObjCTypeParamTypeLoc TL) {
708 if (TL.getNumProtocols()) {
709 Record.AddSourceLocation(TL.getProtocolLAngleLoc());
710 Record.AddSourceLocation(TL.getProtocolRAngleLoc());
711 }
712 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
713 Record.AddSourceLocation(TL.getProtocolLoc(i));
714}
715
716void TypeLocWriter::VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL) {
717 Record.AddSourceLocation(TL.getTypeofLoc());
718 Record.AddSourceLocation(TL.getLParenLoc());
719 Record.AddSourceLocation(TL.getRParenLoc());
720}
721
722void TypeLocWriter::VisitTypeOfTypeLoc(TypeOfTypeLoc TL) {
723 Record.AddSourceLocation(TL.getTypeofLoc());
724 Record.AddSourceLocation(TL.getLParenLoc());
725 Record.AddSourceLocation(TL.getRParenLoc());
726 Record.AddTypeSourceInfo(TL.getUnderlyingTInfo());
727}
728
729void TypeLocWriter::VisitDecltypeTypeLoc(DecltypeTypeLoc TL) {
730 Record.AddSourceLocation(TL.getNameLoc());
731}
732
733void TypeLocWriter::VisitUnaryTransformTypeLoc(UnaryTransformTypeLoc TL) {
734 Record.AddSourceLocation(TL.getKWLoc());
735 Record.AddSourceLocation(TL.getLParenLoc());
736 Record.AddSourceLocation(TL.getRParenLoc());
737 Record.AddTypeSourceInfo(TL.getUnderlyingTInfo());
738}
739
740void TypeLocWriter::VisitAutoTypeLoc(AutoTypeLoc TL) {
741 Record.AddSourceLocation(TL.getNameLoc());
742}
743
744void TypeLocWriter::VisitDeducedTemplateSpecializationTypeLoc(
745 DeducedTemplateSpecializationTypeLoc TL) {
746 Record.AddSourceLocation(TL.getTemplateNameLoc());
747}
748
749void TypeLocWriter::VisitRecordTypeLoc(RecordTypeLoc TL) {
750 Record.AddSourceLocation(TL.getNameLoc());
751}
752
753void TypeLocWriter::VisitEnumTypeLoc(EnumTypeLoc TL) {
754 Record.AddSourceLocation(TL.getNameLoc());
755}
756
757void TypeLocWriter::VisitAttributedTypeLoc(AttributedTypeLoc TL) {
758 Record.AddSourceLocation(TL.getAttrNameLoc());
759 if (TL.hasAttrOperand()) {
760 SourceRange range = TL.getAttrOperandParensRange();
761 Record.AddSourceLocation(range.getBegin());
762 Record.AddSourceLocation(range.getEnd());
763 }
764 if (TL.hasAttrExprOperand()) {
765 Expr *operand = TL.getAttrExprOperand();
766 Record.push_back(operand ? 1 : 0);
767 if (operand) Record.AddStmt(operand);
768 } else if (TL.hasAttrEnumOperand()) {
769 Record.AddSourceLocation(TL.getAttrEnumOperandLoc());
770 }
771}
772
773void TypeLocWriter::VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL) {
774 Record.AddSourceLocation(TL.getNameLoc());
775}
776
777void TypeLocWriter::VisitSubstTemplateTypeParmTypeLoc(
778 SubstTemplateTypeParmTypeLoc TL) {
779 Record.AddSourceLocation(TL.getNameLoc());
780}
781
782void TypeLocWriter::VisitSubstTemplateTypeParmPackTypeLoc(
783 SubstTemplateTypeParmPackTypeLoc TL) {
784 Record.AddSourceLocation(TL.getNameLoc());
785}
786
787void TypeLocWriter::VisitTemplateSpecializationTypeLoc(
788 TemplateSpecializationTypeLoc TL) {
789 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
790 Record.AddSourceLocation(TL.getTemplateNameLoc());
791 Record.AddSourceLocation(TL.getLAngleLoc());
792 Record.AddSourceLocation(TL.getRAngleLoc());
793 for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i)
794 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(i).getArgument().getKind(),
795 TL.getArgLoc(i).getLocInfo());
796}
797
798void TypeLocWriter::VisitParenTypeLoc(ParenTypeLoc TL) {
799 Record.AddSourceLocation(TL.getLParenLoc());
800 Record.AddSourceLocation(TL.getRParenLoc());
801}
802
803void TypeLocWriter::VisitElaboratedTypeLoc(ElaboratedTypeLoc TL) {
804 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
805 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
806}
807
808void TypeLocWriter::VisitInjectedClassNameTypeLoc(InjectedClassNameTypeLoc TL) {
809 Record.AddSourceLocation(TL.getNameLoc());
810}
811
812void TypeLocWriter::VisitDependentNameTypeLoc(DependentNameTypeLoc TL) {
813 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
814 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
815 Record.AddSourceLocation(TL.getNameLoc());
816}
817
818void TypeLocWriter::VisitDependentTemplateSpecializationTypeLoc(
819 DependentTemplateSpecializationTypeLoc TL) {
820 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
821 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
822 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
823 Record.AddSourceLocation(TL.getTemplateNameLoc());
824 Record.AddSourceLocation(TL.getLAngleLoc());
825 Record.AddSourceLocation(TL.getRAngleLoc());
826 for (unsigned I = 0, E = TL.getNumArgs(); I != E; ++I)
827 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(I).getArgument().getKind(),
828 TL.getArgLoc(I).getLocInfo());
829}
830
831void TypeLocWriter::VisitPackExpansionTypeLoc(PackExpansionTypeLoc TL) {
832 Record.AddSourceLocation(TL.getEllipsisLoc());
833}
834
835void TypeLocWriter::VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) {
836 Record.AddSourceLocation(TL.getNameLoc());
837}
838
839void TypeLocWriter::VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) {
840 Record.push_back(TL.hasBaseTypeAsWritten());
841 Record.AddSourceLocation(TL.getTypeArgsLAngleLoc());
842 Record.AddSourceLocation(TL.getTypeArgsRAngleLoc());
843 for (unsigned i = 0, e = TL.getNumTypeArgs(); i != e; ++i)
844 Record.AddTypeSourceInfo(TL.getTypeArgTInfo(i));
845 Record.AddSourceLocation(TL.getProtocolLAngleLoc());
846 Record.AddSourceLocation(TL.getProtocolRAngleLoc());
847 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
848 Record.AddSourceLocation(TL.getProtocolLoc(i));
849}
850
851void TypeLocWriter::VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) {
852 Record.AddSourceLocation(TL.getStarLoc());
853}
854
855void TypeLocWriter::VisitAtomicTypeLoc(AtomicTypeLoc TL) {
856 Record.AddSourceLocation(TL.getKWLoc());
857 Record.AddSourceLocation(TL.getLParenLoc());
858 Record.AddSourceLocation(TL.getRParenLoc());
859}
860
861void TypeLocWriter::VisitPipeTypeLoc(PipeTypeLoc TL) {
862 Record.AddSourceLocation(TL.getKWLoc());
863}
864
865void ASTWriter::WriteTypeAbbrevs() {
866 using namespace llvm;
867
868 std::shared_ptr<BitCodeAbbrev> Abv;
869
870 // Abbreviation for TYPE_EXT_QUAL
871 Abv = std::make_shared<BitCodeAbbrev>();
872 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_EXT_QUAL));
873 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
874 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 3)); // Quals
875 TypeExtQualAbbrev = Stream.EmitAbbrev(std::move(Abv));
876
877 // Abbreviation for TYPE_FUNCTION_PROTO
878 Abv = std::make_shared<BitCodeAbbrev>();
879 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_FUNCTION_PROTO));
880 // FunctionType
881 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ReturnType
882 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // NoReturn
883 Abv->Add(BitCodeAbbrevOp(0)); // HasRegParm
884 Abv->Add(BitCodeAbbrevOp(0)); // RegParm
885 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 4)); // CC
886 Abv->Add(BitCodeAbbrevOp(0)); // ProducesResult
887 Abv->Add(BitCodeAbbrevOp(0)); // NoCallerSavedRegs
888 Abv->Add(BitCodeAbbrevOp(0)); // NoCfCheck
889 // FunctionProtoType
890 Abv->Add(BitCodeAbbrevOp(0)); // IsVariadic
891 Abv->Add(BitCodeAbbrevOp(0)); // HasTrailingReturn
892 Abv->Add(BitCodeAbbrevOp(0)); // TypeQuals
893 Abv->Add(BitCodeAbbrevOp(0)); // RefQualifier
894 Abv->Add(BitCodeAbbrevOp(EST_None)); // ExceptionSpec
895 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // NumParams
896 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
897 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Params
898 TypeFunctionProtoAbbrev = Stream.EmitAbbrev(std::move(Abv));
899}
900
901//===----------------------------------------------------------------------===//
902// ASTWriter Implementation
903//===----------------------------------------------------------------------===//
904
905static void EmitBlockID(unsigned ID, const char *Name,
906 llvm::BitstreamWriter &Stream,
907 ASTWriter::RecordDataImpl &Record) {
908 Record.clear();
909 Record.push_back(ID);
910 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETBID, Record);
911
912 // Emit the block name if present.
913 if (!Name || Name[0] == 0)
914 return;
915 Record.clear();
916 while (*Name)
917 Record.push_back(*Name++);
918 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_BLOCKNAME, Record);
919}
920
921static void EmitRecordID(unsigned ID, const char *Name,
922 llvm::BitstreamWriter &Stream,
923 ASTWriter::RecordDataImpl &Record) {
924 Record.clear();
925 Record.push_back(ID);
926 while (*Name)
927 Record.push_back(*Name++);
928 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETRECORDNAME, Record);
929}
930
931static void AddStmtsExprs(llvm::BitstreamWriter &Stream,
932 ASTWriter::RecordDataImpl &Record) {
933#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
934 RECORD(STMT_STOP);
935 RECORD(STMT_NULL_PTR);
936 RECORD(STMT_REF_PTR);
937 RECORD(STMT_NULL);
938 RECORD(STMT_COMPOUND);
939 RECORD(STMT_CASE);
940 RECORD(STMT_DEFAULT);
941 RECORD(STMT_LABEL);
942 RECORD(STMT_ATTRIBUTED);
943 RECORD(STMT_IF);
944 RECORD(STMT_SWITCH);
945 RECORD(STMT_WHILE);
946 RECORD(STMT_DO);
947 RECORD(STMT_FOR);
948 RECORD(STMT_GOTO);
949 RECORD(STMT_INDIRECT_GOTO);
950 RECORD(STMT_CONTINUE);
951 RECORD(STMT_BREAK);
952 RECORD(STMT_RETURN);
953 RECORD(STMT_DECL);
954 RECORD(STMT_GCCASM);
955 RECORD(STMT_MSASM);
956 RECORD(EXPR_PREDEFINED);
957 RECORD(EXPR_DECL_REF);
958 RECORD(EXPR_INTEGER_LITERAL);
959 RECORD(EXPR_FLOATING_LITERAL);
960 RECORD(EXPR_IMAGINARY_LITERAL);
961 RECORD(EXPR_STRING_LITERAL);
962 RECORD(EXPR_CHARACTER_LITERAL);
963 RECORD(EXPR_PAREN);
964 RECORD(EXPR_PAREN_LIST);
965 RECORD(EXPR_UNARY_OPERATOR);
966 RECORD(EXPR_SIZEOF_ALIGN_OF);
967 RECORD(EXPR_ARRAY_SUBSCRIPT);
968 RECORD(EXPR_CALL);
969 RECORD(EXPR_MEMBER);
970 RECORD(EXPR_BINARY_OPERATOR);
971 RECORD(EXPR_COMPOUND_ASSIGN_OPERATOR);
972 RECORD(EXPR_CONDITIONAL_OPERATOR);
973 RECORD(EXPR_IMPLICIT_CAST);
974 RECORD(EXPR_CSTYLE_CAST);
975 RECORD(EXPR_COMPOUND_LITERAL);
976 RECORD(EXPR_EXT_VECTOR_ELEMENT);
977 RECORD(EXPR_INIT_LIST);
978 RECORD(EXPR_DESIGNATED_INIT);
979 RECORD(EXPR_DESIGNATED_INIT_UPDATE);
980 RECORD(EXPR_IMPLICIT_VALUE_INIT);
981 RECORD(EXPR_NO_INIT);
982 RECORD(EXPR_VA_ARG);
983 RECORD(EXPR_ADDR_LABEL);
984 RECORD(EXPR_STMT);
985 RECORD(EXPR_CHOOSE);
986 RECORD(EXPR_GNU_NULL);
987 RECORD(EXPR_SHUFFLE_VECTOR);
988 RECORD(EXPR_BLOCK);
989 RECORD(EXPR_GENERIC_SELECTION);
990 RECORD(EXPR_OBJC_STRING_LITERAL);
991 RECORD(EXPR_OBJC_BOXED_EXPRESSION);
992 RECORD(EXPR_OBJC_ARRAY_LITERAL);
993 RECORD(EXPR_OBJC_DICTIONARY_LITERAL);
994 RECORD(EXPR_OBJC_ENCODE);
995 RECORD(EXPR_OBJC_SELECTOR_EXPR);
996 RECORD(EXPR_OBJC_PROTOCOL_EXPR);
997 RECORD(EXPR_OBJC_IVAR_REF_EXPR);
998 RECORD(EXPR_OBJC_PROPERTY_REF_EXPR);
999 RECORD(EXPR_OBJC_KVC_REF_EXPR);
1000 RECORD(EXPR_OBJC_MESSAGE_EXPR);
1001 RECORD(STMT_OBJC_FOR_COLLECTION);
1002 RECORD(STMT_OBJC_CATCH);
1003 RECORD(STMT_OBJC_FINALLY);
1004 RECORD(STMT_OBJC_AT_TRY);
1005 RECORD(STMT_OBJC_AT_SYNCHRONIZED);
1006 RECORD(STMT_OBJC_AT_THROW);
1007 RECORD(EXPR_OBJC_BOOL_LITERAL);
1008 RECORD(STMT_CXX_CATCH);
1009 RECORD(STMT_CXX_TRY);
1010 RECORD(STMT_CXX_FOR_RANGE);
1011 RECORD(EXPR_CXX_OPERATOR_CALL);
1012 RECORD(EXPR_CXX_MEMBER_CALL);
1013 RECORD(EXPR_CXX_CONSTRUCT);
1014 RECORD(EXPR_CXX_TEMPORARY_OBJECT);
1015 RECORD(EXPR_CXX_STATIC_CAST);
1016 RECORD(EXPR_CXX_DYNAMIC_CAST);
1017 RECORD(EXPR_CXX_REINTERPRET_CAST);
1018 RECORD(EXPR_CXX_CONST_CAST);
1019 RECORD(EXPR_CXX_FUNCTIONAL_CAST);
1020 RECORD(EXPR_USER_DEFINED_LITERAL);
1021 RECORD(EXPR_CXX_STD_INITIALIZER_LIST);
1022 RECORD(EXPR_CXX_BOOL_LITERAL);
1023 RECORD(EXPR_CXX_NULL_PTR_LITERAL);
1024 RECORD(EXPR_CXX_TYPEID_EXPR);
1025 RECORD(EXPR_CXX_TYPEID_TYPE);
1026 RECORD(EXPR_CXX_THIS);
1027 RECORD(EXPR_CXX_THROW);
1028 RECORD(EXPR_CXX_DEFAULT_ARG);
1029 RECORD(EXPR_CXX_DEFAULT_INIT);
1030 RECORD(EXPR_CXX_BIND_TEMPORARY);
1031 RECORD(EXPR_CXX_SCALAR_VALUE_INIT);
1032 RECORD(EXPR_CXX_NEW);
1033 RECORD(EXPR_CXX_DELETE);
1034 RECORD(EXPR_CXX_PSEUDO_DESTRUCTOR);
1035 RECORD(EXPR_EXPR_WITH_CLEANUPS);
1036 RECORD(EXPR_CXX_DEPENDENT_SCOPE_MEMBER);
1037 RECORD(EXPR_CXX_DEPENDENT_SCOPE_DECL_REF);
1038 RECORD(EXPR_CXX_UNRESOLVED_CONSTRUCT);
1039 RECORD(EXPR_CXX_UNRESOLVED_MEMBER);
1040 RECORD(EXPR_CXX_UNRESOLVED_LOOKUP);
1041 RECORD(EXPR_CXX_EXPRESSION_TRAIT);
1042 RECORD(EXPR_CXX_NOEXCEPT);
1043 RECORD(EXPR_OPAQUE_VALUE);
1044 RECORD(EXPR_BINARY_CONDITIONAL_OPERATOR);
1045 RECORD(EXPR_TYPE_TRAIT);
1046 RECORD(EXPR_ARRAY_TYPE_TRAIT);
1047 RECORD(EXPR_PACK_EXPANSION);
1048 RECORD(EXPR_SIZEOF_PACK);
1049 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM);
1050 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK);
1051 RECORD(EXPR_FUNCTION_PARM_PACK);
1052 RECORD(EXPR_MATERIALIZE_TEMPORARY);
1053 RECORD(EXPR_CUDA_KERNEL_CALL);
1054 RECORD(EXPR_CXX_UUIDOF_EXPR);
1055 RECORD(EXPR_CXX_UUIDOF_TYPE);
1056 RECORD(EXPR_LAMBDA);
1057#undef RECORD
1058}
1059
1060void ASTWriter::WriteBlockInfoBlock() {
1061 RecordData Record;
1062 Stream.EnterBlockInfoBlock();
1063
1064#define BLOCK(X) EmitBlockID(X ## _ID, #X, Stream, Record)
1065#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
1066
1067 // Control Block.
1068 BLOCK(CONTROL_BLOCK);
1069 RECORD(METADATA);
1070 RECORD(MODULE_NAME);
1071 RECORD(MODULE_DIRECTORY);
1072 RECORD(MODULE_MAP_FILE);
1073 RECORD(IMPORTS);
1074 RECORD(ORIGINAL_FILE);
1075 RECORD(ORIGINAL_PCH_DIR);
1076 RECORD(ORIGINAL_FILE_ID);
1077 RECORD(INPUT_FILE_OFFSETS);
1078
1079 BLOCK(OPTIONS_BLOCK);
1080 RECORD(LANGUAGE_OPTIONS);
1081 RECORD(TARGET_OPTIONS);
1082 RECORD(FILE_SYSTEM_OPTIONS);
1083 RECORD(HEADER_SEARCH_OPTIONS);
1084 RECORD(PREPROCESSOR_OPTIONS);
1085
1086 BLOCK(INPUT_FILES_BLOCK);
1087 RECORD(INPUT_FILE);
1088
1089 // AST Top-Level Block.
1090 BLOCK(AST_BLOCK);
1091 RECORD(TYPE_OFFSET);
1092 RECORD(DECL_OFFSET);
1093 RECORD(IDENTIFIER_OFFSET);
1094 RECORD(IDENTIFIER_TABLE);
1095 RECORD(EAGERLY_DESERIALIZED_DECLS);
1096 RECORD(MODULAR_CODEGEN_DECLS);
1097 RECORD(SPECIAL_TYPES);
1098 RECORD(STATISTICS);
1099 RECORD(TENTATIVE_DEFINITIONS);
1100 RECORD(SELECTOR_OFFSETS);
1101 RECORD(METHOD_POOL);
1102 RECORD(PP_COUNTER_VALUE);
1103 RECORD(SOURCE_LOCATION_OFFSETS);
1104 RECORD(SOURCE_LOCATION_PRELOADS);
1105 RECORD(EXT_VECTOR_DECLS);
1106 RECORD(UNUSED_FILESCOPED_DECLS);
1107 RECORD(PPD_ENTITIES_OFFSETS);
1108 RECORD(VTABLE_USES);
1109 RECORD(PPD_SKIPPED_RANGES);
1110 RECORD(REFERENCED_SELECTOR_POOL);
1111 RECORD(TU_UPDATE_LEXICAL);
1112 RECORD(SEMA_DECL_REFS);
1113 RECORD(WEAK_UNDECLARED_IDENTIFIERS);
1114 RECORD(PENDING_IMPLICIT_INSTANTIATIONS);
1115 RECORD(UPDATE_VISIBLE);
1116 RECORD(DECL_UPDATE_OFFSETS);
1117 RECORD(DECL_UPDATES);
1118 RECORD(CUDA_SPECIAL_DECL_REFS);
1119 RECORD(HEADER_SEARCH_TABLE);
1120 RECORD(FP_PRAGMA_OPTIONS);
1121 RECORD(OPENCL_EXTENSIONS);
1122 RECORD(OPENCL_EXTENSION_TYPES);
1123 RECORD(OPENCL_EXTENSION_DECLS);
1124 RECORD(DELEGATING_CTORS);
1125 RECORD(KNOWN_NAMESPACES);
1126 RECORD(MODULE_OFFSET_MAP);
1127 RECORD(SOURCE_MANAGER_LINE_TABLE);
1128 RECORD(OBJC_CATEGORIES_MAP);
1129 RECORD(FILE_SORTED_DECLS);
1130 RECORD(IMPORTED_MODULES);
1131 RECORD(OBJC_CATEGORIES);
1132 RECORD(MACRO_OFFSET);
1133 RECORD(INTERESTING_IDENTIFIERS);
1134 RECORD(UNDEFINED_BUT_USED);
1135 RECORD(LATE_PARSED_TEMPLATE);
1136 RECORD(OPTIMIZE_PRAGMA_OPTIONS);
1137 RECORD(MSSTRUCT_PRAGMA_OPTIONS);
1138 RECORD(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS);
1139 RECORD(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES);
1140 RECORD(DELETE_EXPRS_TO_ANALYZE);
1141 RECORD(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH);
1142 RECORD(PP_CONDITIONAL_STACK);
1143
1144 // SourceManager Block.
1145 BLOCK(SOURCE_MANAGER_BLOCK);
1146 RECORD(SM_SLOC_FILE_ENTRY);
1147 RECORD(SM_SLOC_BUFFER_ENTRY);
1148 RECORD(SM_SLOC_BUFFER_BLOB);
1149 RECORD(SM_SLOC_BUFFER_BLOB_COMPRESSED);
1150 RECORD(SM_SLOC_EXPANSION_ENTRY);
1151
1152 // Preprocessor Block.
1153 BLOCK(PREPROCESSOR_BLOCK);
1154 RECORD(PP_MACRO_DIRECTIVE_HISTORY);
1155 RECORD(PP_MACRO_FUNCTION_LIKE);
1156 RECORD(PP_MACRO_OBJECT_LIKE);
1157 RECORD(PP_MODULE_MACRO);
1158 RECORD(PP_TOKEN);
1159
1160 // Submodule Block.
1161 BLOCK(SUBMODULE_BLOCK);
1162 RECORD(SUBMODULE_METADATA);
1163 RECORD(SUBMODULE_DEFINITION);
1164 RECORD(SUBMODULE_UMBRELLA_HEADER);
1165 RECORD(SUBMODULE_HEADER);
1166 RECORD(SUBMODULE_TOPHEADER);
1167 RECORD(SUBMODULE_UMBRELLA_DIR);
1168 RECORD(SUBMODULE_IMPORTS);
1169 RECORD(SUBMODULE_EXPORTS);
1170 RECORD(SUBMODULE_REQUIRES);
1171 RECORD(SUBMODULE_EXCLUDED_HEADER);
1172 RECORD(SUBMODULE_LINK_LIBRARY);
1173 RECORD(SUBMODULE_CONFIG_MACRO);
1174 RECORD(SUBMODULE_CONFLICT);
1175 RECORD(SUBMODULE_PRIVATE_HEADER);
1176 RECORD(SUBMODULE_TEXTUAL_HEADER);
1177 RECORD(SUBMODULE_PRIVATE_TEXTUAL_HEADER);
1178 RECORD(SUBMODULE_INITIALIZERS);
1179 RECORD(SUBMODULE_EXPORT_AS);
1180
1181 // Comments Block.
1182 BLOCK(COMMENTS_BLOCK);
1183 RECORD(COMMENTS_RAW_COMMENT);
1184
1185 // Decls and Types block.
1186 BLOCK(DECLTYPES_BLOCK);
1187 RECORD(TYPE_EXT_QUAL);
1188 RECORD(TYPE_COMPLEX);
1189 RECORD(TYPE_POINTER);
1190 RECORD(TYPE_BLOCK_POINTER);
1191 RECORD(TYPE_LVALUE_REFERENCE);
1192 RECORD(TYPE_RVALUE_REFERENCE);
1193 RECORD(TYPE_MEMBER_POINTER);
1194 RECORD(TYPE_CONSTANT_ARRAY);
1195 RECORD(TYPE_INCOMPLETE_ARRAY);
1196 RECORD(TYPE_VARIABLE_ARRAY);
1197 RECORD(TYPE_VECTOR);
1198 RECORD(TYPE_EXT_VECTOR);
1199 RECORD(TYPE_FUNCTION_NO_PROTO);
1200 RECORD(TYPE_FUNCTION_PROTO);
1201 RECORD(TYPE_TYPEDEF);
1202 RECORD(TYPE_TYPEOF_EXPR);
1203 RECORD(TYPE_TYPEOF);
1204 RECORD(TYPE_RECORD);
1205 RECORD(TYPE_ENUM);
1206 RECORD(TYPE_OBJC_INTERFACE);
1207 RECORD(TYPE_OBJC_OBJECT_POINTER);
1208 RECORD(TYPE_DECLTYPE);
1209 RECORD(TYPE_ELABORATED);
1210 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM);
1211 RECORD(TYPE_UNRESOLVED_USING);
1212 RECORD(TYPE_INJECTED_CLASS_NAME);
1213 RECORD(TYPE_OBJC_OBJECT);
1214 RECORD(TYPE_TEMPLATE_TYPE_PARM);
1215 RECORD(TYPE_TEMPLATE_SPECIALIZATION);
1216 RECORD(TYPE_DEPENDENT_NAME);
1217 RECORD(TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION);
1218 RECORD(TYPE_DEPENDENT_SIZED_ARRAY);
1219 RECORD(TYPE_PAREN);
1220 RECORD(TYPE_PACK_EXPANSION);
1221 RECORD(TYPE_ATTRIBUTED);
1222 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK);
1223 RECORD(TYPE_AUTO);
1224 RECORD(TYPE_UNARY_TRANSFORM);
1225 RECORD(TYPE_ATOMIC);
1226 RECORD(TYPE_DECAYED);
1227 RECORD(TYPE_ADJUSTED);
1228 RECORD(TYPE_OBJC_TYPE_PARAM);
1229 RECORD(LOCAL_REDECLARATIONS);
1230 RECORD(DECL_TYPEDEF);
1231 RECORD(DECL_TYPEALIAS);
1232 RECORD(DECL_ENUM);
1233 RECORD(DECL_RECORD);
1234 RECORD(DECL_ENUM_CONSTANT);
1235 RECORD(DECL_FUNCTION);
1236 RECORD(DECL_OBJC_METHOD);
1237 RECORD(DECL_OBJC_INTERFACE);
1238 RECORD(DECL_OBJC_PROTOCOL);
1239 RECORD(DECL_OBJC_IVAR);
1240 RECORD(DECL_OBJC_AT_DEFS_FIELD);
1241 RECORD(DECL_OBJC_CATEGORY);
1242 RECORD(DECL_OBJC_CATEGORY_IMPL);
1243 RECORD(DECL_OBJC_IMPLEMENTATION);
1244 RECORD(DECL_OBJC_COMPATIBLE_ALIAS);
1245 RECORD(DECL_OBJC_PROPERTY);
1246 RECORD(DECL_OBJC_PROPERTY_IMPL);
1247 RECORD(DECL_FIELD);
1248 RECORD(DECL_MS_PROPERTY);
1249 RECORD(DECL_VAR);
1250 RECORD(DECL_IMPLICIT_PARAM);
1251 RECORD(DECL_PARM_VAR);
1252 RECORD(DECL_FILE_SCOPE_ASM);
1253 RECORD(DECL_BLOCK);
1254 RECORD(DECL_CONTEXT_LEXICAL);
1255 RECORD(DECL_CONTEXT_VISIBLE);
1256 RECORD(DECL_NAMESPACE);
1257 RECORD(DECL_NAMESPACE_ALIAS);
1258 RECORD(DECL_USING);
1259 RECORD(DECL_USING_SHADOW);
1260 RECORD(DECL_USING_DIRECTIVE);
1261 RECORD(DECL_UNRESOLVED_USING_VALUE);
1262 RECORD(DECL_UNRESOLVED_USING_TYPENAME);
1263 RECORD(DECL_LINKAGE_SPEC);
1264 RECORD(DECL_CXX_RECORD);
1265 RECORD(DECL_CXX_METHOD);
1266 RECORD(DECL_CXX_CONSTRUCTOR);
1267 RECORD(DECL_CXX_INHERITED_CONSTRUCTOR);
1268 RECORD(DECL_CXX_DESTRUCTOR);
1269 RECORD(DECL_CXX_CONVERSION);
1270 RECORD(DECL_ACCESS_SPEC);
1271 RECORD(DECL_FRIEND);
1272 RECORD(DECL_FRIEND_TEMPLATE);
1273 RECORD(DECL_CLASS_TEMPLATE);
1274 RECORD(DECL_CLASS_TEMPLATE_SPECIALIZATION);
1275 RECORD(DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION);
1276 RECORD(DECL_VAR_TEMPLATE);
1277 RECORD(DECL_VAR_TEMPLATE_SPECIALIZATION);
1278 RECORD(DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION);
1279 RECORD(DECL_FUNCTION_TEMPLATE);
1280 RECORD(DECL_TEMPLATE_TYPE_PARM);
1281 RECORD(DECL_NON_TYPE_TEMPLATE_PARM);
1282 RECORD(DECL_TEMPLATE_TEMPLATE_PARM);
1283 RECORD(DECL_TYPE_ALIAS_TEMPLATE);
1284 RECORD(DECL_STATIC_ASSERT);
1285 RECORD(DECL_CXX_BASE_SPECIFIERS);
1286 RECORD(DECL_CXX_CTOR_INITIALIZERS);
1287 RECORD(DECL_INDIRECTFIELD);
1288 RECORD(DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK);
1289 RECORD(DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK);
1290 RECORD(DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION);
1291 RECORD(DECL_IMPORT);
1292 RECORD(DECL_OMP_THREADPRIVATE);
1293 RECORD(DECL_EMPTY);
1294 RECORD(DECL_OBJC_TYPE_PARAM);
1295 RECORD(DECL_OMP_CAPTUREDEXPR);
1296 RECORD(DECL_PRAGMA_COMMENT);
1297 RECORD(DECL_PRAGMA_DETECT_MISMATCH);
1298 RECORD(DECL_OMP_DECLARE_REDUCTION);
1299
1300 // Statements and Exprs can occur in the Decls and Types block.
1301 AddStmtsExprs(Stream, Record);
1302
1303 BLOCK(PREPROCESSOR_DETAIL_BLOCK);
1304 RECORD(PPD_MACRO_EXPANSION);
1305 RECORD(PPD_MACRO_DEFINITION);
1306 RECORD(PPD_INCLUSION_DIRECTIVE);
1307
1308 // Decls and Types block.
1309 BLOCK(EXTENSION_BLOCK);
1310 RECORD(EXTENSION_METADATA);
1311
1312 BLOCK(UNHASHED_CONTROL_BLOCK);
1313 RECORD(SIGNATURE);
1314 RECORD(DIAGNOSTIC_OPTIONS);
1315 RECORD(DIAG_PRAGMA_MAPPINGS);
1316
1317#undef RECORD
1318#undef BLOCK
1319 Stream.ExitBlock();
1320}
1321
1322/// \brief Prepares a path for being written to an AST file by converting it
1323/// to an absolute path and removing nested './'s.
1324///
1325/// \return \c true if the path was changed.
1326static bool cleanPathForOutput(FileManager &FileMgr,
1327 SmallVectorImpl<char> &Path) {
1328 bool Changed = FileMgr.makeAbsolutePath(Path);
1329 return Changed | llvm::sys::path::remove_dots(Path);
1330}
1331
1332/// \brief Adjusts the given filename to only write out the portion of the
1333/// filename that is not part of the system root directory.
1334///
1335/// \param Filename the file name to adjust.
1336///
1337/// \param BaseDir When non-NULL, the PCH file is a relocatable AST file and
1338/// the returned filename will be adjusted by this root directory.
1339///
1340/// \returns either the original filename (if it needs no adjustment) or the
1341/// adjusted filename (which points into the @p Filename parameter).
1342static const char *
1343adjustFilenameForRelocatableAST(const char *Filename, StringRef BaseDir) {
1344 assert(Filename && "No file name to adjust?")(static_cast <bool> (Filename && "No file name to adjust?"
) ? void (0) : __assert_fail ("Filename && \"No file name to adjust?\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1344, __extension__ __PRETTY_FUNCTION__))
;
1345
1346 if (BaseDir.empty())
1347 return Filename;
1348
1349 // Verify that the filename and the system root have the same prefix.
1350 unsigned Pos = 0;
1351 for (; Filename[Pos] && Pos < BaseDir.size(); ++Pos)
1352 if (Filename[Pos] != BaseDir[Pos])
1353 return Filename; // Prefixes don't match.
1354
1355 // We hit the end of the filename before we hit the end of the system root.
1356 if (!Filename[Pos])
1357 return Filename;
1358
1359 // If there's not a path separator at the end of the base directory nor
1360 // immediately after it, then this isn't within the base directory.
1361 if (!llvm::sys::path::is_separator(Filename[Pos])) {
1362 if (!llvm::sys::path::is_separator(BaseDir.back()))
1363 return Filename;
1364 } else {
1365 // If the file name has a '/' at the current position, skip over the '/'.
1366 // We distinguish relative paths from absolute paths by the
1367 // absence of '/' at the beginning of relative paths.
1368 //
1369 // FIXME: This is wrong. We distinguish them by asking if the path is
1370 // absolute, which isn't the same thing. And there might be multiple '/'s
1371 // in a row. Use a better mechanism to indicate whether we have emitted an
1372 // absolute or relative path.
1373 ++Pos;
1374 }
1375
1376 return Filename + Pos;
1377}
1378
1379ASTFileSignature ASTWriter::createSignature(StringRef Bytes) {
1380 // Calculate the hash till start of UNHASHED_CONTROL_BLOCK.
1381 llvm::SHA1 Hasher;
1382 Hasher.update(ArrayRef<uint8_t>(Bytes.bytes_begin(), Bytes.size()));
1383 auto Hash = Hasher.result();
1384
1385 // Convert to an array [5*i32].
1386 ASTFileSignature Signature;
1387 auto LShift = [&](unsigned char Val, unsigned Shift) {
1388 return (uint32_t)Val << Shift;
1389 };
1390 for (int I = 0; I != 5; ++I)
1391 Signature[I] = LShift(Hash[I * 4 + 0], 24) | LShift(Hash[I * 4 + 1], 16) |
1392 LShift(Hash[I * 4 + 2], 8) | LShift(Hash[I * 4 + 3], 0);
1393
1394 return Signature;
1395}
1396
1397ASTFileSignature ASTWriter::writeUnhashedControlBlock(Preprocessor &PP,
1398 ASTContext &Context) {
1399 // Flush first to prepare the PCM hash (signature).
1400 Stream.FlushToWord();
1401 auto StartOfUnhashedControl = Stream.GetCurrentBitNo() >> 3;
1402
1403 // Enter the block and prepare to write records.
1404 RecordData Record;
1405 Stream.EnterSubblock(UNHASHED_CONTROL_BLOCK_ID, 5);
1406
1407 // For implicit modules, write the hash of the PCM as its signature.
1408 ASTFileSignature Signature;
1409 if (WritingModule &&
1410 PP.getHeaderSearchInfo().getHeaderSearchOpts().ModulesHashContent) {
1411 Signature = createSignature(StringRef(Buffer.begin(), StartOfUnhashedControl));
1412 Record.append(Signature.begin(), Signature.end());
1413 Stream.EmitRecord(SIGNATURE, Record);
1414 Record.clear();
1415 }
1416
1417 // Diagnostic options.
1418 const auto &Diags = Context.getDiagnostics();
1419 const DiagnosticOptions &DiagOpts = Diags.getDiagnosticOptions();
1420#define DIAGOPT(Name, Bits, Default) Record.push_back(DiagOpts.Name);
1421#define ENUM_DIAGOPT(Name, Type, Bits, Default) \
1422 Record.push_back(static_cast<unsigned>(DiagOpts.get##Name()));
1423#include "clang/Basic/DiagnosticOptions.def"
1424 Record.push_back(DiagOpts.Warnings.size());
1425 for (unsigned I = 0, N = DiagOpts.Warnings.size(); I != N; ++I)
1426 AddString(DiagOpts.Warnings[I], Record);
1427 Record.push_back(DiagOpts.Remarks.size());
1428 for (unsigned I = 0, N = DiagOpts.Remarks.size(); I != N; ++I)
1429 AddString(DiagOpts.Remarks[I], Record);
1430 // Note: we don't serialize the log or serialization file names, because they
1431 // are generally transient files and will almost always be overridden.
1432 Stream.EmitRecord(DIAGNOSTIC_OPTIONS, Record);
1433
1434 // Write out the diagnostic/pragma mappings.
1435 WritePragmaDiagnosticMappings(Diags, /* IsModule = */ WritingModule);
1436
1437 // Leave the options block.
1438 Stream.ExitBlock();
1439 return Signature;
1440}
1441
1442/// \brief Write the control block.
1443void ASTWriter::WriteControlBlock(Preprocessor &PP, ASTContext &Context,
1444 StringRef isysroot,
1445 const std::string &OutputFile) {
1446 using namespace llvm;
1447
1448 Stream.EnterSubblock(CONTROL_BLOCK_ID, 5);
1449 RecordData Record;
1450
1451 // Metadata
1452 auto MetadataAbbrev = std::make_shared<BitCodeAbbrev>();
1453 MetadataAbbrev->Add(BitCodeAbbrevOp(METADATA));
1454 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Major
1455 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Minor
1456 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang maj.
1457 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang min.
1458 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Relocatable
1459 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Timestamps
1460 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Errors
1461 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // SVN branch/tag
1462 unsigned MetadataAbbrevCode = Stream.EmitAbbrev(std::move(MetadataAbbrev));
1463 assert((!WritingModule || isysroot.empty()) &&(static_cast <bool> ((!WritingModule || isysroot.empty(
)) && "writing module as a relocatable PCH?") ? void (
0) : __assert_fail ("(!WritingModule || isysroot.empty()) && \"writing module as a relocatable PCH?\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1464, __extension__ __PRETTY_FUNCTION__))
1464 "writing module as a relocatable PCH?")(static_cast <bool> ((!WritingModule || isysroot.empty(
)) && "writing module as a relocatable PCH?") ? void (
0) : __assert_fail ("(!WritingModule || isysroot.empty()) && \"writing module as a relocatable PCH?\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1464, __extension__ __PRETTY_FUNCTION__))
;
1465 {
1466 RecordData::value_type Record[] = {METADATA, VERSION_MAJOR, VERSION_MINOR,
1467 CLANG_VERSION_MAJOR7, CLANG_VERSION_MINOR0,
1468 !isysroot.empty(), IncludeTimestamps,
1469 ASTHasCompilerErrors};
1470 Stream.EmitRecordWithBlob(MetadataAbbrevCode, Record,
1471 getClangFullRepositoryVersion());
1472 }
1473
1474 if (WritingModule) {
1475 // Module name
1476 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1477 Abbrev->Add(BitCodeAbbrevOp(MODULE_NAME));
1478 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
1479 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1480 RecordData::value_type Record[] = {MODULE_NAME};
1481 Stream.EmitRecordWithBlob(AbbrevCode, Record, WritingModule->Name);
1482 }
1483
1484 if (WritingModule && WritingModule->Directory) {
1485 SmallString<128> BaseDir(WritingModule->Directory->getName());
1486 cleanPathForOutput(Context.getSourceManager().getFileManager(), BaseDir);
1487
1488 // If the home of the module is the current working directory, then we
1489 // want to pick up the cwd of the build process loading the module, not
1490 // our cwd, when we load this module.
1491 if (!PP.getHeaderSearchInfo()
1492 .getHeaderSearchOpts()
1493 .ModuleMapFileHomeIsCwd ||
1494 WritingModule->Directory->getName() != StringRef(".")) {
1495 // Module directory.
1496 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1497 Abbrev->Add(BitCodeAbbrevOp(MODULE_DIRECTORY));
1498 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Directory
1499 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1500
1501 RecordData::value_type Record[] = {MODULE_DIRECTORY};
1502 Stream.EmitRecordWithBlob(AbbrevCode, Record, BaseDir);
1503 }
1504
1505 // Write out all other paths relative to the base directory if possible.
1506 BaseDirectory.assign(BaseDir.begin(), BaseDir.end());
1507 } else if (!isysroot.empty()) {
1508 // Write out paths relative to the sysroot if possible.
1509 BaseDirectory = isysroot;
1510 }
1511
1512 // Module map file
1513 if (WritingModule && WritingModule->Kind == Module::ModuleMapModule) {
1514 Record.clear();
1515
1516 auto &Map = PP.getHeaderSearchInfo().getModuleMap();
1517 AddPath(WritingModule->PresumedModuleMapFile.empty()
1518 ? Map.getModuleMapFileForUniquing(WritingModule)->getName()
1519 : StringRef(WritingModule->PresumedModuleMapFile),
1520 Record);
1521
1522 // Additional module map files.
1523 if (auto *AdditionalModMaps =
1524 Map.getAdditionalModuleMapFiles(WritingModule)) {
1525 Record.push_back(AdditionalModMaps->size());
1526 for (const FileEntry *F : *AdditionalModMaps)
1527 AddPath(F->getName(), Record);
1528 } else {
1529 Record.push_back(0);
1530 }
1531
1532 Stream.EmitRecord(MODULE_MAP_FILE, Record);
1533 }
1534
1535 // Imports
1536 if (Chain) {
1537 serialization::ModuleManager &Mgr = Chain->getModuleManager();
1538 Record.clear();
1539
1540 for (ModuleFile &M : Mgr) {
1541 // Skip modules that weren't directly imported.
1542 if (!M.isDirectlyImported())
1543 continue;
1544
1545 Record.push_back((unsigned)M.Kind); // FIXME: Stable encoding
1546 AddSourceLocation(M.ImportLoc, Record);
1547
1548 // If we have calculated signature, there is no need to store
1549 // the size or timestamp.
1550 Record.push_back(M.Signature ? 0 : M.File->getSize());
1551 Record.push_back(M.Signature ? 0 : getTimestampForOutput(M.File));
1552
1553 for (auto I : M.Signature)
1554 Record.push_back(I);
1555
1556 AddString(M.ModuleName, Record);
1557 AddPath(M.FileName, Record);
1558 }
1559 Stream.EmitRecord(IMPORTS, Record);
1560 }
1561
1562 // Write the options block.
1563 Stream.EnterSubblock(OPTIONS_BLOCK_ID, 4);
1564
1565 // Language options.
1566 Record.clear();
1567 const LangOptions &LangOpts = Context.getLangOpts();
1568#define LANGOPT(Name, Bits, Default, Description) \
1569 Record.push_back(LangOpts.Name);
1570#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1571 Record.push_back(static_cast<unsigned>(LangOpts.get##Name()));
1572#include "clang/Basic/LangOptions.def"
1573#define SANITIZER(NAME, ID) \
1574 Record.push_back(LangOpts.Sanitize.has(SanitizerKind::ID));
1575#include "clang/Basic/Sanitizers.def"
1576
1577 Record.push_back(LangOpts.ModuleFeatures.size());
1578 for (StringRef Feature : LangOpts.ModuleFeatures)
1579 AddString(Feature, Record);
1580
1581 Record.push_back((unsigned) LangOpts.ObjCRuntime.getKind());
1582 AddVersionTuple(LangOpts.ObjCRuntime.getVersion(), Record);
1583
1584 AddString(LangOpts.CurrentModule, Record);
1585
1586 // Comment options.
1587 Record.push_back(LangOpts.CommentOpts.BlockCommandNames.size());
1588 for (const auto &I : LangOpts.CommentOpts.BlockCommandNames) {
1589 AddString(I, Record);
1590 }
1591 Record.push_back(LangOpts.CommentOpts.ParseAllComments);
1592
1593 // OpenMP offloading options.
1594 Record.push_back(LangOpts.OMPTargetTriples.size());
1595 for (auto &T : LangOpts.OMPTargetTriples)
1596 AddString(T.getTriple(), Record);
1597
1598 AddString(LangOpts.OMPHostIRFile, Record);
1599
1600 Stream.EmitRecord(LANGUAGE_OPTIONS, Record);
1601
1602 // Target options.
1603 Record.clear();
1604 const TargetInfo &Target = Context.getTargetInfo();
1605 const TargetOptions &TargetOpts = Target.getTargetOpts();
1606 AddString(TargetOpts.Triple, Record);
1607 AddString(TargetOpts.CPU, Record);
1608 AddString(TargetOpts.ABI, Record);
1609 Record.push_back(TargetOpts.FeaturesAsWritten.size());
1610 for (unsigned I = 0, N = TargetOpts.FeaturesAsWritten.size(); I != N; ++I) {
1611 AddString(TargetOpts.FeaturesAsWritten[I], Record);
1612 }
1613 Record.push_back(TargetOpts.Features.size());
1614 for (unsigned I = 0, N = TargetOpts.Features.size(); I != N; ++I) {
1615 AddString(TargetOpts.Features[I], Record);
1616 }
1617 Stream.EmitRecord(TARGET_OPTIONS, Record);
1618
1619 // File system options.
1620 Record.clear();
1621 const FileSystemOptions &FSOpts =
1622 Context.getSourceManager().getFileManager().getFileSystemOpts();
1623 AddString(FSOpts.WorkingDir, Record);
1624 Stream.EmitRecord(FILE_SYSTEM_OPTIONS, Record);
1625
1626 // Header search options.
1627 Record.clear();
1628 const HeaderSearchOptions &HSOpts
1629 = PP.getHeaderSearchInfo().getHeaderSearchOpts();
1630 AddString(HSOpts.Sysroot, Record);
1631
1632 // Include entries.
1633 Record.push_back(HSOpts.UserEntries.size());
1634 for (unsigned I = 0, N = HSOpts.UserEntries.size(); I != N; ++I) {
1635 const HeaderSearchOptions::Entry &Entry = HSOpts.UserEntries[I];
1636 AddString(Entry.Path, Record);
1637 Record.push_back(static_cast<unsigned>(Entry.Group));
1638 Record.push_back(Entry.IsFramework);
1639 Record.push_back(Entry.IgnoreSysRoot);
1640 }
1641
1642 // System header prefixes.
1643 Record.push_back(HSOpts.SystemHeaderPrefixes.size());
1644 for (unsigned I = 0, N = HSOpts.SystemHeaderPrefixes.size(); I != N; ++I) {
1645 AddString(HSOpts.SystemHeaderPrefixes[I].Prefix, Record);
1646 Record.push_back(HSOpts.SystemHeaderPrefixes[I].IsSystemHeader);
1647 }
1648
1649 AddString(HSOpts.ResourceDir, Record);
1650 AddString(HSOpts.ModuleCachePath, Record);
1651 AddString(HSOpts.ModuleUserBuildPath, Record);
1652 Record.push_back(HSOpts.DisableModuleHash);
1653 Record.push_back(HSOpts.ImplicitModuleMaps);
1654 Record.push_back(HSOpts.ModuleMapFileHomeIsCwd);
1655 Record.push_back(HSOpts.UseBuiltinIncludes);
1656 Record.push_back(HSOpts.UseStandardSystemIncludes);
1657 Record.push_back(HSOpts.UseStandardCXXIncludes);
1658 Record.push_back(HSOpts.UseLibcxx);
1659 // Write out the specific module cache path that contains the module files.
1660 AddString(PP.getHeaderSearchInfo().getModuleCachePath(), Record);
1661 Stream.EmitRecord(HEADER_SEARCH_OPTIONS, Record);
1662
1663 // Preprocessor options.
1664 Record.clear();
1665 const PreprocessorOptions &PPOpts = PP.getPreprocessorOpts();
1666
1667 // Macro definitions.
1668 Record.push_back(PPOpts.Macros.size());
1669 for (unsigned I = 0, N = PPOpts.Macros.size(); I != N; ++I) {
1670 AddString(PPOpts.Macros[I].first, Record);
1671 Record.push_back(PPOpts.Macros[I].second);
1672 }
1673
1674 // Includes
1675 Record.push_back(PPOpts.Includes.size());
1676 for (unsigned I = 0, N = PPOpts.Includes.size(); I != N; ++I)
1677 AddString(PPOpts.Includes[I], Record);
1678
1679 // Macro includes
1680 Record.push_back(PPOpts.MacroIncludes.size());
1681 for (unsigned I = 0, N = PPOpts.MacroIncludes.size(); I != N; ++I)
1682 AddString(PPOpts.MacroIncludes[I], Record);
1683
1684 Record.push_back(PPOpts.UsePredefines);
1685 // Detailed record is important since it is used for the module cache hash.
1686 Record.push_back(PPOpts.DetailedRecord);
1687 AddString(PPOpts.ImplicitPCHInclude, Record);
1688 AddString(PPOpts.ImplicitPTHInclude, Record);
1689 Record.push_back(static_cast<unsigned>(PPOpts.ObjCXXARCStandardLibrary));
1690 Stream.EmitRecord(PREPROCESSOR_OPTIONS, Record);
1691
1692 // Leave the options block.
1693 Stream.ExitBlock();
1694
1695 // Original file name and file ID
1696 SourceManager &SM = Context.getSourceManager();
1697 if (const FileEntry *MainFile = SM.getFileEntryForID(SM.getMainFileID())) {
1698 auto FileAbbrev = std::make_shared<BitCodeAbbrev>();
1699 FileAbbrev->Add(BitCodeAbbrevOp(ORIGINAL_FILE));
1700 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // File ID
1701 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1702 unsigned FileAbbrevCode = Stream.EmitAbbrev(std::move(FileAbbrev));
1703
1704 Record.clear();
1705 Record.push_back(ORIGINAL_FILE);
1706 Record.push_back(SM.getMainFileID().getOpaqueValue());
1707 EmitRecordWithPath(FileAbbrevCode, Record, MainFile->getName());
1708 }
1709
1710 Record.clear();
1711 Record.push_back(SM.getMainFileID().getOpaqueValue());
1712 Stream.EmitRecord(ORIGINAL_FILE_ID, Record);
1713
1714 // Original PCH directory
1715 if (!OutputFile.empty() && OutputFile != "-") {
1716 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1717 Abbrev->Add(BitCodeAbbrevOp(ORIGINAL_PCH_DIR));
1718 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1719 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1720
1721 SmallString<128> OutputPath(OutputFile);
1722
1723 SM.getFileManager().makeAbsolutePath(OutputPath);
1724 StringRef origDir = llvm::sys::path::parent_path(OutputPath);
1725
1726 RecordData::value_type Record[] = {ORIGINAL_PCH_DIR};
1727 Stream.EmitRecordWithBlob(AbbrevCode, Record, origDir);
1728 }
1729
1730 WriteInputFiles(Context.SourceMgr,
1731 PP.getHeaderSearchInfo().getHeaderSearchOpts(),
1732 PP.getLangOpts().Modules);
1733 Stream.ExitBlock();
1734}
1735
1736namespace {
1737
1738/// \brief An input file.
1739struct InputFileEntry {
1740 const FileEntry *File;
1741 bool IsSystemFile;
1742 bool IsTransient;
1743 bool BufferOverridden;
1744 bool IsTopLevelModuleMap;
1745};
1746
1747} // namespace
1748
1749void ASTWriter::WriteInputFiles(SourceManager &SourceMgr,
1750 HeaderSearchOptions &HSOpts,
1751 bool Modules) {
1752 using namespace llvm;
1753
1754 Stream.EnterSubblock(INPUT_FILES_BLOCK_ID, 4);
1755
1756 // Create input-file abbreviation.
1757 auto IFAbbrev = std::make_shared<BitCodeAbbrev>();
1758 IFAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE));
1759 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
1760 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 12)); // Size
1761 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // Modification time
1762 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Overridden
1763 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Transient
1764 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Module map
1765 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1766 unsigned IFAbbrevCode = Stream.EmitAbbrev(std::move(IFAbbrev));
1767
1768 // Get all ContentCache objects for files, sorted by whether the file is a
1769 // system one or not. System files go at the back, users files at the front.
1770 std::deque<InputFileEntry> SortedFiles;
1771 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size(); I != N; ++I) {
1772 // Get this source location entry.
1773 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
1774 assert(&SourceMgr.getSLocEntry(FileID::get(I)) == SLoc)(static_cast <bool> (&SourceMgr.getSLocEntry(FileID
::get(I)) == SLoc) ? void (0) : __assert_fail ("&SourceMgr.getSLocEntry(FileID::get(I)) == SLoc"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1774, __extension__ __PRETTY_FUNCTION__))
;
1775
1776 // We only care about file entries that were not overridden.
1777 if (!SLoc->isFile())
1778 continue;
1779 const SrcMgr::FileInfo &File = SLoc->getFile();
1780 const SrcMgr::ContentCache *Cache = File.getContentCache();
1781 if (!Cache->OrigEntry)
1782 continue;
1783
1784 InputFileEntry Entry;
1785 Entry.File = Cache->OrigEntry;
1786 Entry.IsSystemFile = Cache->IsSystemFile;
1787 Entry.IsTransient = Cache->IsTransient;
1788 Entry.BufferOverridden = Cache->BufferOverridden;
1789 Entry.IsTopLevelModuleMap = isModuleMap(File.getFileCharacteristic()) &&
1790 File.getIncludeLoc().isInvalid();
1791 if (Cache->IsSystemFile)
1792 SortedFiles.push_back(Entry);
1793 else
1794 SortedFiles.push_front(Entry);
1795 }
1796
1797 unsigned UserFilesNum = 0;
1798 // Write out all of the input files.
1799 std::vector<uint64_t> InputFileOffsets;
1800 for (const auto &Entry : SortedFiles) {
1801 uint32_t &InputFileID = InputFileIDs[Entry.File];
1802 if (InputFileID != 0)
1803 continue; // already recorded this file.
1804
1805 // Record this entry's offset.
1806 InputFileOffsets.push_back(Stream.GetCurrentBitNo());
1807
1808 InputFileID = InputFileOffsets.size();
1809
1810 if (!Entry.IsSystemFile)
1811 ++UserFilesNum;
1812
1813 // Emit size/modification time for this file.
1814 // And whether this file was overridden.
1815 RecordData::value_type Record[] = {
1816 INPUT_FILE,
1817 InputFileOffsets.size(),
1818 (uint64_t)Entry.File->getSize(),
1819 (uint64_t)getTimestampForOutput(Entry.File),
1820 Entry.BufferOverridden,
1821 Entry.IsTransient,
1822 Entry.IsTopLevelModuleMap};
1823
1824 EmitRecordWithPath(IFAbbrevCode, Record, Entry.File->getName());
1825 }
1826
1827 Stream.ExitBlock();
1828
1829 // Create input file offsets abbreviation.
1830 auto OffsetsAbbrev = std::make_shared<BitCodeAbbrev>();
1831 OffsetsAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE_OFFSETS));
1832 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # input files
1833 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # non-system
1834 // input files
1835 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Array
1836 unsigned OffsetsAbbrevCode = Stream.EmitAbbrev(std::move(OffsetsAbbrev));
1837
1838 // Write input file offsets.
1839 RecordData::value_type Record[] = {INPUT_FILE_OFFSETS,
1840 InputFileOffsets.size(), UserFilesNum};
1841 Stream.EmitRecordWithBlob(OffsetsAbbrevCode, Record, bytes(InputFileOffsets));
1842}
1843
1844//===----------------------------------------------------------------------===//
1845// Source Manager Serialization
1846//===----------------------------------------------------------------------===//
1847
1848/// \brief Create an abbreviation for the SLocEntry that refers to a
1849/// file.
1850static unsigned CreateSLocFileAbbrev(llvm::BitstreamWriter &Stream) {
1851 using namespace llvm;
1852
1853 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1854 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_FILE_ENTRY));
1855 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1856 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1857 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1858 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1859 // FileEntry fields.
1860 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Input File ID
1861 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumCreatedFIDs
1862 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 24)); // FirstDeclIndex
1863 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumDecls
1864 return Stream.EmitAbbrev(std::move(Abbrev));
1865}
1866
1867/// \brief Create an abbreviation for the SLocEntry that refers to a
1868/// buffer.
1869static unsigned CreateSLocBufferAbbrev(llvm::BitstreamWriter &Stream) {
1870 using namespace llvm;
1871
1872 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1873 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_BUFFER_ENTRY));
1874 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1875 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1876 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1877 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1878 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Buffer name blob
1879 return Stream.EmitAbbrev(std::move(Abbrev));
1880}
1881
1882/// \brief Create an abbreviation for the SLocEntry that refers to a
1883/// buffer's blob.
1884static unsigned CreateSLocBufferBlobAbbrev(llvm::BitstreamWriter &Stream,
1885 bool Compressed) {
1886 using namespace llvm;
1887
1888 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1889 Abbrev->Add(BitCodeAbbrevOp(Compressed ? SM_SLOC_BUFFER_BLOB_COMPRESSED
1890 : SM_SLOC_BUFFER_BLOB));
1891 if (Compressed)
1892 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Uncompressed size
1893 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Blob
1894 return Stream.EmitAbbrev(std::move(Abbrev));
1895}
1896
1897/// \brief Create an abbreviation for the SLocEntry that refers to a macro
1898/// expansion.
1899static unsigned CreateSLocExpansionAbbrev(llvm::BitstreamWriter &Stream) {
1900 using namespace llvm;
1901
1902 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1903 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_EXPANSION_ENTRY));
1904 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1905 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Spelling location
1906 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Start location
1907 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // End location
1908 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Token length
1909 return Stream.EmitAbbrev(std::move(Abbrev));
1910}
1911
1912namespace {
1913
1914 // Trait used for the on-disk hash table of header search information.
1915 class HeaderFileInfoTrait {
1916 ASTWriter &Writer;
1917
1918 // Keep track of the framework names we've used during serialization.
1919 SmallVector<char, 128> FrameworkStringData;
1920 llvm::StringMap<unsigned> FrameworkNameOffset;
1921
1922 public:
1923 HeaderFileInfoTrait(ASTWriter &Writer) : Writer(Writer) {}
1924
1925 struct key_type {
1926 StringRef Filename;
1927 off_t Size;
1928 time_t ModTime;
1929 };
1930 using key_type_ref = const key_type &;
1931
1932 using UnresolvedModule =
1933 llvm::PointerIntPair<Module *, 2, ModuleMap::ModuleHeaderRole>;
1934
1935 struct data_type {
1936 const HeaderFileInfo &HFI;
1937 ArrayRef<ModuleMap::KnownHeader> KnownHeaders;
1938 UnresolvedModule Unresolved;
1939 };
1940 using data_type_ref = const data_type &;
1941
1942 using hash_value_type = unsigned;
1943 using offset_type = unsigned;
1944
1945 hash_value_type ComputeHash(key_type_ref key) {
1946 // The hash is based only on size/time of the file, so that the reader can
1947 // match even when symlinking or excess path elements ("foo/../", "../")
1948 // change the form of the name. However, complete path is still the key.
1949 return llvm::hash_combine(key.Size, key.ModTime);
1950 }
1951
1952 std::pair<unsigned, unsigned>
1953 EmitKeyDataLength(raw_ostream& Out, key_type_ref key, data_type_ref Data) {
1954 using namespace llvm::support;
1955
1956 endian::Writer<little> LE(Out);
1957 unsigned KeyLen = key.Filename.size() + 1 + 8 + 8;
1958 LE.write<uint16_t>(KeyLen);
1959 unsigned DataLen = 1 + 2 + 4 + 4;
1960 for (auto ModInfo : Data.KnownHeaders)
1961 if (Writer.getLocalOrImportedSubmoduleID(ModInfo.getModule()))
1962 DataLen += 4;
1963 if (Data.Unresolved.getPointer())
1964 DataLen += 4;
1965 LE.write<uint8_t>(DataLen);
1966 return std::make_pair(KeyLen, DataLen);
1967 }
1968
1969 void EmitKey(raw_ostream& Out, key_type_ref key, unsigned KeyLen) {
1970 using namespace llvm::support;
1971
1972 endian::Writer<little> LE(Out);
1973 LE.write<uint64_t>(key.Size);
1974 KeyLen -= 8;
1975 LE.write<uint64_t>(key.ModTime);
1976 KeyLen -= 8;
1977 Out.write(key.Filename.data(), KeyLen);
1978 }
1979
1980 void EmitData(raw_ostream &Out, key_type_ref key,
1981 data_type_ref Data, unsigned DataLen) {
1982 using namespace llvm::support;
1983
1984 endian::Writer<little> LE(Out);
1985 uint64_t Start = Out.tell(); (void)Start;
1986
1987 unsigned char Flags = (Data.HFI.isImport << 5)
1988 | (Data.HFI.isPragmaOnce << 4)
1989 | (Data.HFI.DirInfo << 1)
1990 | Data.HFI.IndexHeaderMapHeader;
1991 LE.write<uint8_t>(Flags);
1992 LE.write<uint16_t>(Data.HFI.NumIncludes);
1993
1994 if (!Data.HFI.ControllingMacro)
1995 LE.write<uint32_t>(Data.HFI.ControllingMacroID);
1996 else
1997 LE.write<uint32_t>(Writer.getIdentifierRef(Data.HFI.ControllingMacro));
1998
1999 unsigned Offset = 0;
2000 if (!Data.HFI.Framework.empty()) {
2001 // If this header refers into a framework, save the framework name.
2002 llvm::StringMap<unsigned>::iterator Pos
2003 = FrameworkNameOffset.find(Data.HFI.Framework);
2004 if (Pos == FrameworkNameOffset.end()) {
2005 Offset = FrameworkStringData.size() + 1;
2006 FrameworkStringData.append(Data.HFI.Framework.begin(),
2007 Data.HFI.Framework.end());
2008 FrameworkStringData.push_back(0);
2009
2010 FrameworkNameOffset[Data.HFI.Framework] = Offset;
2011 } else
2012 Offset = Pos->second;
2013 }
2014 LE.write<uint32_t>(Offset);
2015
2016 auto EmitModule = [&](Module *M, ModuleMap::ModuleHeaderRole Role) {
2017 if (uint32_t ModID = Writer.getLocalOrImportedSubmoduleID(M)) {
2018 uint32_t Value = (ModID << 2) | (unsigned)Role;
2019 assert((Value >> 2) == ModID && "overflow in header module info")(static_cast <bool> ((Value >> 2) == ModID &&
"overflow in header module info") ? void (0) : __assert_fail
("(Value >> 2) == ModID && \"overflow in header module info\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2019, __extension__ __PRETTY_FUNCTION__))
;
2020 LE.write<uint32_t>(Value);
2021 }
2022 };
2023
2024 // FIXME: If the header is excluded, we should write out some
2025 // record of that fact.
2026 for (auto ModInfo : Data.KnownHeaders)
2027 EmitModule(ModInfo.getModule(), ModInfo.getRole());
2028 if (Data.Unresolved.getPointer())
2029 EmitModule(Data.Unresolved.getPointer(), Data.Unresolved.getInt());
2030
2031 assert(Out.tell() - Start == DataLen && "Wrong data length")(static_cast <bool> (Out.tell() - Start == DataLen &&
"Wrong data length") ? void (0) : __assert_fail ("Out.tell() - Start == DataLen && \"Wrong data length\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2031, __extension__ __PRETTY_FUNCTION__))
;
2032 }
2033
2034 const char *strings_begin() const { return FrameworkStringData.begin(); }
2035 const char *strings_end() const { return FrameworkStringData.end(); }
2036 };
2037
2038} // namespace
2039
2040/// \brief Write the header search block for the list of files that
2041///
2042/// \param HS The header search structure to save.
2043void ASTWriter::WriteHeaderSearch(const HeaderSearch &HS) {
2044 HeaderFileInfoTrait GeneratorTrait(*this);
2045 llvm::OnDiskChainedHashTableGenerator<HeaderFileInfoTrait> Generator;
2046 SmallVector<const char *, 4> SavedStrings;
2047 unsigned NumHeaderSearchEntries = 0;
2048
2049 // Find all unresolved headers for the current module. We generally will
2050 // have resolved them before we get here, but not necessarily: we might be
2051 // compiling a preprocessed module, where there is no requirement for the
2052 // original files to exist any more.
2053 const HeaderFileInfo Empty; // So we can take a reference.
2054 if (WritingModule) {
1
Assuming the condition is true
2
Taking true branch
2055 llvm::SmallVector<Module *, 16> Worklist(1, WritingModule);
2056 while (!Worklist.empty()) {
3
Loop condition is true. Entering loop body
2057 Module *M = Worklist.pop_back_val();
2058 if (!M->isAvailable())
4
Assuming the condition is false
5
Taking false branch
2059 continue;
2060
2061 // Map to disk files where possible, to pick up any missing stat
2062 // information. This also means we don't need to check the unresolved
2063 // headers list when emitting resolved headers in the first loop below.
2064 // FIXME: It'd be preferable to avoid doing this if we were given
2065 // sufficient stat information in the module map.
2066 HS.getModuleMap().resolveHeaderDirectives(M);
2067
2068 // If the file didn't exist, we can still create a module if we were given
2069 // enough information in the module map.
2070 for (auto U : M->MissingHeaders) {
6
Assuming '__begin3' is not equal to '__end3'
2071 // Check that we were given enough information to build a module
2072 // without this file existing on disk.
2073 if (!U.Size || (!U.ModTime && IncludeTimestamps)) {
7
Assuming the condition is false
8
Assuming the condition is false
2074 PP->Diag(U.FileNameLoc, diag::err_module_no_size_mtime_for_header)
2075 << WritingModule->getFullModuleName() << U.Size.hasValue()
2076 << U.FileName;
2077 continue;
2078 }
2079
2080 // Form the effective relative pathname for the file.
2081 SmallString<128> Filename(M->Directory->getName());
2082 llvm::sys::path::append(Filename, U.FileName);
2083 PreparePathForOutput(Filename);
2084
2085 StringRef FilenameDup = strdup(Filename.c_str());
9
Memory is allocated
10
Potential memory leak
2086 SavedStrings.push_back(FilenameDup.data());
2087
2088 HeaderFileInfoTrait::key_type Key = {
2089 FilenameDup, *U.Size, IncludeTimestamps ? *U.ModTime : 0
2090 };
2091 HeaderFileInfoTrait::data_type Data = {
2092 Empty, {}, {M, ModuleMap::headerKindToRole(U.Kind)}
2093 };
2094 // FIXME: Deal with cases where there are multiple unresolved header
2095 // directives in different submodules for the same header.
2096 Generator.insert(Key, Data, GeneratorTrait);
2097 ++NumHeaderSearchEntries;
2098 }
2099
2100 Worklist.append(M->submodule_begin(), M->submodule_end());
2101 }
2102 }
2103
2104 SmallVector<const FileEntry *, 16> FilesByUID;
2105 HS.getFileMgr().GetUniqueIDMapping(FilesByUID);
2106
2107 if (FilesByUID.size() > HS.header_file_size())
2108 FilesByUID.resize(HS.header_file_size());
2109
2110 for (unsigned UID = 0, LastUID = FilesByUID.size(); UID != LastUID; ++UID) {
2111 const FileEntry *File = FilesByUID[UID];
2112 if (!File)
2113 continue;
2114
2115 // Get the file info. This will load info from the external source if
2116 // necessary. Skip emitting this file if we have no information on it
2117 // as a header file (in which case HFI will be null) or if it hasn't
2118 // changed since it was loaded. Also skip it if it's for a modular header
2119 // from a different module; in that case, we rely on the module(s)
2120 // containing the header to provide this information.
2121 const HeaderFileInfo *HFI =
2122 HS.getExistingFileInfo(File, /*WantExternal*/!Chain);
2123 if (!HFI || (HFI->isModuleHeader && !HFI->isCompilingModuleHeader))
2124 continue;
2125
2126 // Massage the file path into an appropriate form.
2127 StringRef Filename = File->getName();
2128 SmallString<128> FilenameTmp(Filename);
2129 if (PreparePathForOutput(FilenameTmp)) {
2130 // If we performed any translation on the file name at all, we need to
2131 // save this string, since the generator will refer to it later.
2132 Filename = StringRef(strdup(FilenameTmp.c_str()));
2133 SavedStrings.push_back(Filename.data());
2134 }
2135
2136 HeaderFileInfoTrait::key_type Key = {
2137 Filename, File->getSize(), getTimestampForOutput(File)
2138 };
2139 HeaderFileInfoTrait::data_type Data = {
2140 *HFI, HS.getModuleMap().findAllModulesForHeader(File), {}
2141 };
2142 Generator.insert(Key, Data, GeneratorTrait);
2143 ++NumHeaderSearchEntries;
2144 }
2145
2146 // Create the on-disk hash table in a buffer.
2147 SmallString<4096> TableData;
2148 uint32_t BucketOffset;
2149 {
2150 using namespace llvm::support;
2151
2152 llvm::raw_svector_ostream Out(TableData);
2153 // Make sure that no bucket is at offset 0
2154 endian::Writer<little>(Out).write<uint32_t>(0);
2155 BucketOffset = Generator.Emit(Out, GeneratorTrait);
2156 }
2157
2158 // Create a blob abbreviation
2159 using namespace llvm;
2160
2161 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2162 Abbrev->Add(BitCodeAbbrevOp(HEADER_SEARCH_TABLE));
2163 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2164 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2165 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2166 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2167 unsigned TableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2168
2169 // Write the header search table
2170 RecordData::value_type Record[] = {HEADER_SEARCH_TABLE, BucketOffset,
2171 NumHeaderSearchEntries, TableData.size()};
2172 TableData.append(GeneratorTrait.strings_begin(),GeneratorTrait.strings_end());
2173 Stream.EmitRecordWithBlob(TableAbbrev, Record, TableData);
2174
2175 // Free all of the strings we had to duplicate.
2176 for (unsigned I = 0, N = SavedStrings.size(); I != N; ++I)
2177 free(const_cast<char *>(SavedStrings[I]));
2178}
2179
2180static void emitBlob(llvm::BitstreamWriter &Stream, StringRef Blob,
2181 unsigned SLocBufferBlobCompressedAbbrv,
2182 unsigned SLocBufferBlobAbbrv) {
2183 using RecordDataType = ASTWriter::RecordData::value_type;
2184
2185 // Compress the buffer if possible. We expect that almost all PCM
2186 // consumers will not want its contents.
2187 SmallString<0> CompressedBuffer;
2188 if (llvm::zlib::isAvailable()) {
2189 llvm::Error E = llvm::zlib::compress(Blob.drop_back(1), CompressedBuffer);
2190 if (!E) {
2191 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB_COMPRESSED,
2192 Blob.size() - 1};
2193 Stream.EmitRecordWithBlob(SLocBufferBlobCompressedAbbrv, Record,
2194 CompressedBuffer);
2195 return;
2196 }
2197 llvm::consumeError(std::move(E));
2198 }
2199
2200 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB};
2201 Stream.EmitRecordWithBlob(SLocBufferBlobAbbrv, Record, Blob);
2202}
2203
2204/// \brief Writes the block containing the serialized form of the
2205/// source manager.
2206///
2207/// TODO: We should probably use an on-disk hash table (stored in a
2208/// blob), indexed based on the file name, so that we only create
2209/// entries for files that we actually need. In the common case (no
2210/// errors), we probably won't have to create file entries for any of
2211/// the files in the AST.
2212void ASTWriter::WriteSourceManagerBlock(SourceManager &SourceMgr,
2213 const Preprocessor &PP) {
2214 RecordData Record;
2215
2216 // Enter the source manager block.
2217 Stream.EnterSubblock(SOURCE_MANAGER_BLOCK_ID, 4);
2218
2219 // Abbreviations for the various kinds of source-location entries.
2220 unsigned SLocFileAbbrv = CreateSLocFileAbbrev(Stream);
2221 unsigned SLocBufferAbbrv = CreateSLocBufferAbbrev(Stream);
2222 unsigned SLocBufferBlobAbbrv = CreateSLocBufferBlobAbbrev(Stream, false);
2223 unsigned SLocBufferBlobCompressedAbbrv =
2224 CreateSLocBufferBlobAbbrev(Stream, true);
2225 unsigned SLocExpansionAbbrv = CreateSLocExpansionAbbrev(Stream);
2226
2227 // Write out the source location entry table. We skip the first
2228 // entry, which is always the same dummy entry.
2229 std::vector<uint32_t> SLocEntryOffsets;
2230 RecordData PreloadSLocs;
2231 SLocEntryOffsets.reserve(SourceMgr.local_sloc_entry_size() - 1);
2232 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size();
2233 I != N; ++I) {
2234 // Get this source location entry.
2235 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
2236 FileID FID = FileID::get(I);
2237 assert(&SourceMgr.getSLocEntry(FID) == SLoc)(static_cast <bool> (&SourceMgr.getSLocEntry(FID) ==
SLoc) ? void (0) : __assert_fail ("&SourceMgr.getSLocEntry(FID) == SLoc"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2237, __extension__ __PRETTY_FUNCTION__))
;
2238
2239 // Record the offset of this source-location entry.
2240 SLocEntryOffsets.push_back(Stream.GetCurrentBitNo());
2241
2242 // Figure out which record code to use.
2243 unsigned Code;
2244 if (SLoc->isFile()) {
2245 const SrcMgr::ContentCache *Cache = SLoc->getFile().getContentCache();
2246 if (Cache->OrigEntry) {
2247 Code = SM_SLOC_FILE_ENTRY;
2248 } else
2249 Code = SM_SLOC_BUFFER_ENTRY;
2250 } else
2251 Code = SM_SLOC_EXPANSION_ENTRY;
2252 Record.clear();
2253 Record.push_back(Code);
2254
2255 // Starting offset of this entry within this module, so skip the dummy.
2256 Record.push_back(SLoc->getOffset() - 2);
2257 if (SLoc->isFile()) {
2258 const SrcMgr::FileInfo &File = SLoc->getFile();
2259 AddSourceLocation(File.getIncludeLoc(), Record);
2260 Record.push_back(File.getFileCharacteristic()); // FIXME: stable encoding
2261 Record.push_back(File.hasLineDirectives());
2262
2263 const SrcMgr::ContentCache *Content = File.getContentCache();
2264 bool EmitBlob = false;
2265 if (Content->OrigEntry) {
2266 assert(Content->OrigEntry == Content->ContentsEntry &&(static_cast <bool> (Content->OrigEntry == Content->
ContentsEntry && "Writing to AST an overridden file is not supported"
) ? void (0) : __assert_fail ("Content->OrigEntry == Content->ContentsEntry && \"Writing to AST an overridden file is not supported\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2267, __extension__ __PRETTY_FUNCTION__))
2267 "Writing to AST an overridden file is not supported")(static_cast <bool> (Content->OrigEntry == Content->
ContentsEntry && "Writing to AST an overridden file is not supported"
) ? void (0) : __assert_fail ("Content->OrigEntry == Content->ContentsEntry && \"Writing to AST an overridden file is not supported\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2267, __extension__ __PRETTY_FUNCTION__))
;
2268
2269 // The source location entry is a file. Emit input file ID.
2270 assert(InputFileIDs[Content->OrigEntry] != 0 && "Missed file entry")(static_cast <bool> (InputFileIDs[Content->OrigEntry
] != 0 && "Missed file entry") ? void (0) : __assert_fail
("InputFileIDs[Content->OrigEntry] != 0 && \"Missed file entry\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2270, __extension__ __PRETTY_FUNCTION__))
;
2271 Record.push_back(InputFileIDs[Content->OrigEntry]);
2272
2273 Record.push_back(File.NumCreatedFIDs);
2274
2275 FileDeclIDsTy::iterator FDI = FileDeclIDs.find(FID);
2276 if (FDI != FileDeclIDs.end()) {
2277 Record.push_back(FDI->second->FirstDeclIndex);
2278 Record.push_back(FDI->second->DeclIDs.size());
2279 } else {
2280 Record.push_back(0);
2281 Record.push_back(0);
2282 }
2283
2284 Stream.EmitRecordWithAbbrev(SLocFileAbbrv, Record);
2285
2286 if (Content->BufferOverridden || Content->IsTransient)
2287 EmitBlob = true;
2288 } else {
2289 // The source location entry is a buffer. The blob associated
2290 // with this entry contains the contents of the buffer.
2291
2292 // We add one to the size so that we capture the trailing NULL
2293 // that is required by llvm::MemoryBuffer::getMemBuffer (on
2294 // the reader side).
2295 const llvm::MemoryBuffer *Buffer
2296 = Content->getBuffer(PP.getDiagnostics(), PP.getSourceManager());
2297 StringRef Name = Buffer->getBufferIdentifier();
2298 Stream.EmitRecordWithBlob(SLocBufferAbbrv, Record,
2299 StringRef(Name.data(), Name.size() + 1));
2300 EmitBlob = true;
2301
2302 if (Name == "<built-in>")
2303 PreloadSLocs.push_back(SLocEntryOffsets.size());
2304 }
2305
2306 if (EmitBlob) {
2307 // Include the implicit terminating null character in the on-disk buffer
2308 // if we're writing it uncompressed.
2309 const llvm::MemoryBuffer *Buffer =
2310 Content->getBuffer(PP.getDiagnostics(), PP.getSourceManager());
2311 StringRef Blob(Buffer->getBufferStart(), Buffer->getBufferSize() + 1);
2312 emitBlob(Stream, Blob, SLocBufferBlobCompressedAbbrv,
2313 SLocBufferBlobAbbrv);
2314 }
2315 } else {
2316 // The source location entry is a macro expansion.
2317 const SrcMgr::ExpansionInfo &Expansion = SLoc->getExpansion();
2318 AddSourceLocation(Expansion.getSpellingLoc(), Record);
2319 AddSourceLocation(Expansion.getExpansionLocStart(), Record);
2320 AddSourceLocation(Expansion.isMacroArgExpansion()
2321 ? SourceLocation()
2322 : Expansion.getExpansionLocEnd(),
2323 Record);
2324
2325 // Compute the token length for this macro expansion.
2326 unsigned NextOffset = SourceMgr.getNextLocalOffset();
2327 if (I + 1 != N)
2328 NextOffset = SourceMgr.getLocalSLocEntry(I + 1).getOffset();
2329 Record.push_back(NextOffset - SLoc->getOffset() - 1);
2330 Stream.EmitRecordWithAbbrev(SLocExpansionAbbrv, Record);
2331 }
2332 }
2333
2334 Stream.ExitBlock();
2335
2336 if (SLocEntryOffsets.empty())
2337 return;
2338
2339 // Write the source-location offsets table into the AST block. This
2340 // table is used for lazily loading source-location information.
2341 using namespace llvm;
2342
2343 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2344 Abbrev->Add(BitCodeAbbrevOp(SOURCE_LOCATION_OFFSETS));
2345 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs
2346 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // total size
2347 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets
2348 unsigned SLocOffsetsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2349 {
2350 RecordData::value_type Record[] = {
2351 SOURCE_LOCATION_OFFSETS, SLocEntryOffsets.size(),
2352 SourceMgr.getNextLocalOffset() - 1 /* skip dummy */};
2353 Stream.EmitRecordWithBlob(SLocOffsetsAbbrev, Record,
2354 bytes(SLocEntryOffsets));
2355 }
2356 // Write the source location entry preloads array, telling the AST
2357 // reader which source locations entries it should load eagerly.
2358 Stream.EmitRecord(SOURCE_LOCATION_PRELOADS, PreloadSLocs);
2359
2360 // Write the line table. It depends on remapping working, so it must come
2361 // after the source location offsets.
2362 if (SourceMgr.hasLineTable()) {
2363 LineTableInfo &LineTable = SourceMgr.getLineTable();
2364
2365 Record.clear();
2366
2367 // Emit the needed file names.
2368 llvm::DenseMap<int, int> FilenameMap;
2369 FilenameMap[-1] = -1; // For unspecified filenames.
2370 for (const auto &L : LineTable) {
2371 if (L.first.ID < 0)
2372 continue;
2373 for (auto &LE : L.second) {
2374 if (FilenameMap.insert(std::make_pair(LE.FilenameID,
2375 FilenameMap.size() - 1)).second)
2376 AddPath(LineTable.getFilename(LE.FilenameID), Record);
2377 }
2378 }
2379 Record.push_back(0);
2380
2381 // Emit the line entries
2382 for (const auto &L : LineTable) {
2383 // Only emit entries for local files.
2384 if (L.first.ID < 0)
2385 continue;
2386
2387 // Emit the file ID
2388 Record.push_back(L.first.ID);
2389
2390 // Emit the line entries
2391 Record.push_back(L.second.size());
2392 for (const auto &LE : L.second) {
2393 Record.push_back(LE.FileOffset);
2394 Record.push_back(LE.LineNo);
2395 Record.push_back(FilenameMap[LE.FilenameID]);
2396 Record.push_back((unsigned)LE.FileKind);
2397 Record.push_back(LE.IncludeOffset);
2398 }
2399 }
2400
2401 Stream.EmitRecord(SOURCE_MANAGER_LINE_TABLE, Record);
2402 }
2403}
2404
2405//===----------------------------------------------------------------------===//
2406// Preprocessor Serialization
2407//===----------------------------------------------------------------------===//
2408
2409static bool shouldIgnoreMacro(MacroDirective *MD, bool IsModule,
2410 const Preprocessor &PP) {
2411 if (MacroInfo *MI = MD->getMacroInfo())
2412 if (MI->isBuiltinMacro())
2413 return true;
2414
2415 if (IsModule) {
2416 SourceLocation Loc = MD->getLocation();
2417 if (Loc.isInvalid())
2418 return true;
2419 if (PP.getSourceManager().getFileID(Loc) == PP.getPredefinesFileID())
2420 return true;
2421 }
2422
2423 return false;
2424}
2425
2426/// \brief Writes the block containing the serialized form of the
2427/// preprocessor.
2428void ASTWriter::WritePreprocessor(const Preprocessor &PP, bool IsModule) {
2429 PreprocessingRecord *PPRec = PP.getPreprocessingRecord();
2430 if (PPRec)
2431 WritePreprocessorDetail(*PPRec);
2432
2433 RecordData Record;
2434 RecordData ModuleMacroRecord;
2435
2436 // If the preprocessor __COUNTER__ value has been bumped, remember it.
2437 if (PP.getCounterValue() != 0) {
2438 RecordData::value_type Record[] = {PP.getCounterValue()};
2439 Stream.EmitRecord(PP_COUNTER_VALUE, Record);
2440 }
2441
2442 if (PP.isRecordingPreamble() && PP.hasRecordedPreamble()) {
2443 assert(!IsModule)(static_cast <bool> (!IsModule) ? void (0) : __assert_fail
("!IsModule", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2443, __extension__ __PRETTY_FUNCTION__))
;
2444 auto SkipInfo = PP.getPreambleSkipInfo();
2445 if (SkipInfo.hasValue()) {
2446 Record.push_back(true);
2447 AddSourceLocation(SkipInfo->HashTokenLoc, Record);
2448 AddSourceLocation(SkipInfo->IfTokenLoc, Record);
2449 Record.push_back(SkipInfo->FoundNonSkipPortion);
2450 Record.push_back(SkipInfo->FoundElse);
2451 AddSourceLocation(SkipInfo->ElseLoc, Record);
2452 } else {
2453 Record.push_back(false);
2454 }
2455 for (const auto &Cond : PP.getPreambleConditionalStack()) {
2456 AddSourceLocation(Cond.IfLoc, Record);
2457 Record.push_back(Cond.WasSkipping);
2458 Record.push_back(Cond.FoundNonSkip);
2459 Record.push_back(Cond.FoundElse);
2460 }
2461 Stream.EmitRecord(PP_CONDITIONAL_STACK, Record);
2462 Record.clear();
2463 }
2464
2465 // Enter the preprocessor block.
2466 Stream.EnterSubblock(PREPROCESSOR_BLOCK_ID, 3);
2467
2468 // If the AST file contains __DATE__ or __TIME__ emit a warning about this.
2469 // FIXME: Include a location for the use, and say which one was used.
2470 if (PP.SawDateOrTime())
2471 PP.Diag(SourceLocation(), diag::warn_module_uses_date_time) << IsModule;
2472
2473 // Loop over all the macro directives that are live at the end of the file,
2474 // emitting each to the PP section.
2475
2476 // Construct the list of identifiers with macro directives that need to be
2477 // serialized.
2478 SmallVector<const IdentifierInfo *, 128> MacroIdentifiers;
2479 for (auto &Id : PP.getIdentifierTable())
2480 if (Id.second->hadMacroDefinition() &&
2481 (!Id.second->isFromAST() ||
2482 Id.second->hasChangedSinceDeserialization()))
2483 MacroIdentifiers.push_back(Id.second);
2484 // Sort the set of macro definitions that need to be serialized by the
2485 // name of the macro, to provide a stable ordering.
2486 llvm::sort(MacroIdentifiers.begin(), MacroIdentifiers.end(),
2487 llvm::less_ptr<IdentifierInfo>());
2488
2489 // Emit the macro directives as a list and associate the offset with the
2490 // identifier they belong to.
2491 for (const IdentifierInfo *Name : MacroIdentifiers) {
2492 MacroDirective *MD = PP.getLocalMacroDirectiveHistory(Name);
2493 auto StartOffset = Stream.GetCurrentBitNo();
2494
2495 // Emit the macro directives in reverse source order.
2496 for (; MD; MD = MD->getPrevious()) {
2497 // Once we hit an ignored macro, we're done: the rest of the chain
2498 // will all be ignored macros.
2499 if (shouldIgnoreMacro(MD, IsModule, PP))
2500 break;
2501
2502 AddSourceLocation(MD->getLocation(), Record);
2503 Record.push_back(MD->getKind());
2504 if (auto *DefMD = dyn_cast<DefMacroDirective>(MD)) {
2505 Record.push_back(getMacroRef(DefMD->getInfo(), Name));
2506 } else if (auto *VisMD = dyn_cast<VisibilityMacroDirective>(MD)) {
2507 Record.push_back(VisMD->isPublic());
2508 }
2509 }
2510
2511 // Write out any exported module macros.
2512 bool EmittedModuleMacros = false;
2513 // We write out exported module macros for PCH as well.
2514 auto Leafs = PP.getLeafModuleMacros(Name);
2515 SmallVector<ModuleMacro*, 8> Worklist(Leafs.begin(), Leafs.end());
2516 llvm::DenseMap<ModuleMacro*, unsigned> Visits;
2517 while (!Worklist.empty()) {
2518 auto *Macro = Worklist.pop_back_val();
2519
2520 // Emit a record indicating this submodule exports this macro.
2521 ModuleMacroRecord.push_back(
2522 getSubmoduleID(Macro->getOwningModule()));
2523 ModuleMacroRecord.push_back(getMacroRef(Macro->getMacroInfo(), Name));
2524 for (auto *M : Macro->overrides())
2525 ModuleMacroRecord.push_back(getSubmoduleID(M->getOwningModule()));
2526
2527 Stream.EmitRecord(PP_MODULE_MACRO, ModuleMacroRecord);
2528 ModuleMacroRecord.clear();
2529
2530 // Enqueue overridden macros once we've visited all their ancestors.
2531 for (auto *M : Macro->overrides())
2532 if (++Visits[M] == M->getNumOverridingMacros())
2533 Worklist.push_back(M);
2534
2535 EmittedModuleMacros = true;
2536 }
2537
2538 if (Record.empty() && !EmittedModuleMacros)
2539 continue;
2540
2541 IdentMacroDirectivesOffsetMap[Name] = StartOffset;
2542 Stream.EmitRecord(PP_MACRO_DIRECTIVE_HISTORY, Record);
2543 Record.clear();
2544 }
2545
2546 /// \brief Offsets of each of the macros into the bitstream, indexed by
2547 /// the local macro ID
2548 ///
2549 /// For each identifier that is associated with a macro, this map
2550 /// provides the offset into the bitstream where that macro is
2551 /// defined.
2552 std::vector<uint32_t> MacroOffsets;
2553
2554 for (unsigned I = 0, N = MacroInfosToEmit.size(); I != N; ++I) {
2555 const IdentifierInfo *Name = MacroInfosToEmit[I].Name;
2556 MacroInfo *MI = MacroInfosToEmit[I].MI;
2557 MacroID ID = MacroInfosToEmit[I].ID;
2558
2559 if (ID < FirstMacroID) {
2560 assert(0 && "Loaded MacroInfo entered MacroInfosToEmit ?")(static_cast <bool> (0 && "Loaded MacroInfo entered MacroInfosToEmit ?"
) ? void (0) : __assert_fail ("0 && \"Loaded MacroInfo entered MacroInfosToEmit ?\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2560, __extension__ __PRETTY_FUNCTION__))
;
2561 continue;
2562 }
2563
2564 // Record the local offset of this macro.
2565 unsigned Index = ID - FirstMacroID;
2566 if (Index == MacroOffsets.size())
2567 MacroOffsets.push_back(Stream.GetCurrentBitNo());
2568 else {
2569 if (Index > MacroOffsets.size())
2570 MacroOffsets.resize(Index + 1);
2571
2572 MacroOffsets[Index] = Stream.GetCurrentBitNo();
2573 }
2574
2575 AddIdentifierRef(Name, Record);
2576 AddSourceLocation(MI->getDefinitionLoc(), Record);
2577 AddSourceLocation(MI->getDefinitionEndLoc(), Record);
2578 Record.push_back(MI->isUsed());
2579 Record.push_back(MI->isUsedForHeaderGuard());
2580 unsigned Code;
2581 if (MI->isObjectLike()) {
2582 Code = PP_MACRO_OBJECT_LIKE;
2583 } else {
2584 Code = PP_MACRO_FUNCTION_LIKE;
2585
2586 Record.push_back(MI->isC99Varargs());
2587 Record.push_back(MI->isGNUVarargs());
2588 Record.push_back(MI->hasCommaPasting());
2589 Record.push_back(MI->getNumParams());
2590 for (const IdentifierInfo *Param : MI->params())
2591 AddIdentifierRef(Param, Record);
2592 }
2593
2594 // If we have a detailed preprocessing record, record the macro definition
2595 // ID that corresponds to this macro.
2596 if (PPRec)
2597 Record.push_back(MacroDefinitions[PPRec->findMacroDefinition(MI)]);
2598
2599 Stream.EmitRecord(Code, Record);
2600 Record.clear();
2601
2602 // Emit the tokens array.
2603 for (unsigned TokNo = 0, e = MI->getNumTokens(); TokNo != e; ++TokNo) {
2604 // Note that we know that the preprocessor does not have any annotation
2605 // tokens in it because they are created by the parser, and thus can't
2606 // be in a macro definition.
2607 const Token &Tok = MI->getReplacementToken(TokNo);
2608 AddToken(Tok, Record);
2609 Stream.EmitRecord(PP_TOKEN, Record);
2610 Record.clear();
2611 }
2612 ++NumMacros;
2613 }
2614
2615 Stream.ExitBlock();
2616
2617 // Write the offsets table for macro IDs.
2618 using namespace llvm;
2619
2620 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2621 Abbrev->Add(BitCodeAbbrevOp(MACRO_OFFSET));
2622 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of macros
2623 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
2624 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2625
2626 unsigned MacroOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2627 {
2628 RecordData::value_type Record[] = {MACRO_OFFSET, MacroOffsets.size(),
2629 FirstMacroID - NUM_PREDEF_MACRO_IDS};
2630 Stream.EmitRecordWithBlob(MacroOffsetAbbrev, Record, bytes(MacroOffsets));
2631 }
2632}
2633
2634void ASTWriter::WritePreprocessorDetail(PreprocessingRecord &PPRec) {
2635 if (PPRec.local_begin() == PPRec.local_end())
2636 return;
2637
2638 SmallVector<PPEntityOffset, 64> PreprocessedEntityOffsets;
2639
2640 // Enter the preprocessor block.
2641 Stream.EnterSubblock(PREPROCESSOR_DETAIL_BLOCK_ID, 3);
2642
2643 // If the preprocessor has a preprocessing record, emit it.
2644 unsigned NumPreprocessingRecords = 0;
2645 using namespace llvm;
2646
2647 // Set up the abbreviation for
2648 unsigned InclusionAbbrev = 0;
2649 {
2650 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2651 Abbrev->Add(BitCodeAbbrevOp(PPD_INCLUSION_DIRECTIVE));
2652 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // filename length
2653 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // in quotes
2654 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // kind
2655 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // imported module
2656 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2657 InclusionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2658 }
2659
2660 unsigned FirstPreprocessorEntityID
2661 = (Chain ? PPRec.getNumLoadedPreprocessedEntities() : 0)
2662 + NUM_PREDEF_PP_ENTITY_IDS;
2663 unsigned NextPreprocessorEntityID = FirstPreprocessorEntityID;
2664 RecordData Record;
2665 for (PreprocessingRecord::iterator E = PPRec.local_begin(),
2666 EEnd = PPRec.local_end();
2667 E != EEnd;
2668 (void)++E, ++NumPreprocessingRecords, ++NextPreprocessorEntityID) {
2669 Record.clear();
2670
2671 PreprocessedEntityOffsets.push_back(
2672 PPEntityOffset((*E)->getSourceRange(), Stream.GetCurrentBitNo()));
2673
2674 if (auto *MD = dyn_cast<MacroDefinitionRecord>(*E)) {
2675 // Record this macro definition's ID.
2676 MacroDefinitions[MD] = NextPreprocessorEntityID;
2677
2678 AddIdentifierRef(MD->getName(), Record);
2679 Stream.EmitRecord(PPD_MACRO_DEFINITION, Record);
2680 continue;
2681 }
2682
2683 if (auto *ME = dyn_cast<MacroExpansion>(*E)) {
2684 Record.push_back(ME->isBuiltinMacro());
2685 if (ME->isBuiltinMacro())
2686 AddIdentifierRef(ME->getName(), Record);
2687 else
2688 Record.push_back(MacroDefinitions[ME->getDefinition()]);
2689 Stream.EmitRecord(PPD_MACRO_EXPANSION, Record);
2690 continue;
2691 }
2692
2693 if (auto *ID = dyn_cast<InclusionDirective>(*E)) {
2694 Record.push_back(PPD_INCLUSION_DIRECTIVE);
2695 Record.push_back(ID->getFileName().size());
2696 Record.push_back(ID->wasInQuotes());
2697 Record.push_back(static_cast<unsigned>(ID->getKind()));
2698 Record.push_back(ID->importedModule());
2699 SmallString<64> Buffer;
2700 Buffer += ID->getFileName();
2701 // Check that the FileEntry is not null because it was not resolved and
2702 // we create a PCH even with compiler errors.
2703 if (ID->getFile())
2704 Buffer += ID->getFile()->getName();
2705 Stream.EmitRecordWithBlob(InclusionAbbrev, Record, Buffer);
2706 continue;
2707 }
2708
2709 llvm_unreachable("Unhandled PreprocessedEntity in ASTWriter")::llvm::llvm_unreachable_internal("Unhandled PreprocessedEntity in ASTWriter"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2709)
;
2710 }
2711 Stream.ExitBlock();
2712
2713 // Write the offsets table for the preprocessing record.
2714 if (NumPreprocessingRecords > 0) {
2715 assert(PreprocessedEntityOffsets.size() == NumPreprocessingRecords)(static_cast <bool> (PreprocessedEntityOffsets.size() ==
NumPreprocessingRecords) ? void (0) : __assert_fail ("PreprocessedEntityOffsets.size() == NumPreprocessingRecords"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2715, __extension__ __PRETTY_FUNCTION__))
;
2716
2717 // Write the offsets table for identifier IDs.
2718 using namespace llvm;
2719
2720 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2721 Abbrev->Add(BitCodeAbbrevOp(PPD_ENTITIES_OFFSETS));
2722 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first pp entity
2723 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2724 unsigned PPEOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2725
2726 RecordData::value_type Record[] = {PPD_ENTITIES_OFFSETS,
2727 FirstPreprocessorEntityID -
2728 NUM_PREDEF_PP_ENTITY_IDS};
2729 Stream.EmitRecordWithBlob(PPEOffsetAbbrev, Record,
2730 bytes(PreprocessedEntityOffsets));
2731 }
2732
2733 // Write the skipped region table for the preprocessing record.
2734 ArrayRef<SourceRange> SkippedRanges = PPRec.getSkippedRanges();
2735 if (SkippedRanges.size() > 0) {
2736 std::vector<PPSkippedRange> SerializedSkippedRanges;
2737 SerializedSkippedRanges.reserve(SkippedRanges.size());
2738 for (auto const& Range : SkippedRanges)
2739 SerializedSkippedRanges.emplace_back(Range);
2740
2741 using namespace llvm;
2742 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2743 Abbrev->Add(BitCodeAbbrevOp(PPD_SKIPPED_RANGES));
2744 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2745 unsigned PPESkippedRangeAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2746
2747 Record.clear();
2748 Record.push_back(PPD_SKIPPED_RANGES);
2749 Stream.EmitRecordWithBlob(PPESkippedRangeAbbrev, Record,
2750 bytes(SerializedSkippedRanges));
2751 }
2752}
2753
2754unsigned ASTWriter::getLocalOrImportedSubmoduleID(Module *Mod) {
2755 if (!Mod)
2756 return 0;
2757
2758 llvm::DenseMap<Module *, unsigned>::iterator Known = SubmoduleIDs.find(Mod);
2759 if (Known != SubmoduleIDs.end())
2760 return Known->second;
2761
2762 auto *Top = Mod->getTopLevelModule();
2763 if (Top != WritingModule &&
2764 (getLangOpts().CompilingPCH ||
2765 !Top->fullModuleNameIs(StringRef(getLangOpts().CurrentModule))))
2766 return 0;
2767
2768 return SubmoduleIDs[Mod] = NextSubmoduleID++;
2769}
2770
2771unsigned ASTWriter::getSubmoduleID(Module *Mod) {
2772 // FIXME: This can easily happen, if we have a reference to a submodule that
2773 // did not result in us loading a module file for that submodule. For
2774 // instance, a cross-top-level-module 'conflict' declaration will hit this.
2775 unsigned ID = getLocalOrImportedSubmoduleID(Mod);
2776 assert((ID || !Mod) &&(static_cast <bool> ((ID || !Mod) && "asked for module ID for non-local, non-imported module"
) ? void (0) : __assert_fail ("(ID || !Mod) && \"asked for module ID for non-local, non-imported module\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2777, __extension__ __PRETTY_FUNCTION__))
2777 "asked for module ID for non-local, non-imported module")(static_cast <bool> ((ID || !Mod) && "asked for module ID for non-local, non-imported module"
) ? void (0) : __assert_fail ("(ID || !Mod) && \"asked for module ID for non-local, non-imported module\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2777, __extension__ __PRETTY_FUNCTION__))
;
2778 return ID;
2779}
2780
2781/// \brief Compute the number of modules within the given tree (including the
2782/// given module).
2783static unsigned getNumberOfModules(Module *Mod) {
2784 unsigned ChildModules = 0;
2785 for (auto Sub = Mod->submodule_begin(), SubEnd = Mod->submodule_end();
2786 Sub != SubEnd; ++Sub)
2787 ChildModules += getNumberOfModules(*Sub);
2788
2789 return ChildModules + 1;
2790}
2791
2792void ASTWriter::WriteSubmodules(Module *WritingModule) {
2793 // Enter the submodule description block.
2794 Stream.EnterSubblock(SUBMODULE_BLOCK_ID, /*bits for abbreviations*/5);
2795
2796 // Write the abbreviations needed for the submodules block.
2797 using namespace llvm;
2798
2799 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2800 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_DEFINITION));
2801 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
2802 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Parent
2803 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Kind
2804 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2805 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExplicit
2806 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsSystem
2807 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExternC
2808 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferSubmodules...
2809 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExplicit...
2810 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExportWild...
2811 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ConfigMacrosExh...
2812 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2813 unsigned DefinitionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2814
2815 Abbrev = std::make_shared<BitCodeAbbrev>();
2816 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_HEADER));
2817 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2818 unsigned UmbrellaAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2819
2820 Abbrev = std::make_shared<BitCodeAbbrev>();
2821 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_HEADER));
2822 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2823 unsigned HeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2824
2825 Abbrev = std::make_shared<BitCodeAbbrev>();
2826 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TOPHEADER));
2827 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2828 unsigned TopHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2829
2830 Abbrev = std::make_shared<BitCodeAbbrev>();
2831 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_DIR));
2832 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2833 unsigned UmbrellaDirAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2834
2835 Abbrev = std::make_shared<BitCodeAbbrev>();
2836 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_REQUIRES));
2837 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // State
2838 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Feature
2839 unsigned RequiresAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2840
2841 Abbrev = std::make_shared<BitCodeAbbrev>();
2842 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXCLUDED_HEADER));
2843 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2844 unsigned ExcludedHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2845
2846 Abbrev = std::make_shared<BitCodeAbbrev>();
2847 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TEXTUAL_HEADER));
2848 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2849 unsigned TextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2850
2851 Abbrev = std::make_shared<BitCodeAbbrev>();
2852 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_HEADER));
2853 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2854 unsigned PrivateHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2855
2856 Abbrev = std::make_shared<BitCodeAbbrev>();
2857 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_TEXTUAL_HEADER));
2858 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2859 unsigned PrivateTextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2860
2861 Abbrev = std::make_shared<BitCodeAbbrev>();
2862 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_LINK_LIBRARY));
2863 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2864 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2865 unsigned LinkLibraryAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2866
2867 Abbrev = std::make_shared<BitCodeAbbrev>();
2868 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFIG_MACRO));
2869 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2870 unsigned ConfigMacroAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2871
2872 Abbrev = std::make_shared<BitCodeAbbrev>();
2873 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFLICT));
2874 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Other module
2875 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Message
2876 unsigned ConflictAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2877
2878 Abbrev = std::make_shared<BitCodeAbbrev>();
2879 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXPORT_AS));
2880 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2881 unsigned ExportAsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2882
2883 // Write the submodule metadata block.
2884 RecordData::value_type Record[] = {
2885 getNumberOfModules(WritingModule),
2886 FirstSubmoduleID - NUM_PREDEF_SUBMODULE_IDS};
2887 Stream.EmitRecord(SUBMODULE_METADATA, Record);
2888
2889 // Write all of the submodules.
2890 std::queue<Module *> Q;
2891 Q.push(WritingModule);
2892 while (!Q.empty()) {
2893 Module *Mod = Q.front();
2894 Q.pop();
2895 unsigned ID = getSubmoduleID(Mod);
2896
2897 uint64_t ParentID = 0;
2898 if (Mod->Parent) {
2899 assert(SubmoduleIDs[Mod->Parent] && "Submodule parent not written?")(static_cast <bool> (SubmoduleIDs[Mod->Parent] &&
"Submodule parent not written?") ? void (0) : __assert_fail (
"SubmoduleIDs[Mod->Parent] && \"Submodule parent not written?\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2899, __extension__ __PRETTY_FUNCTION__))
;
2900 ParentID = SubmoduleIDs[Mod->Parent];
2901 }
2902
2903 // Emit the definition of the block.
2904 {
2905 RecordData::value_type Record[] = {SUBMODULE_DEFINITION,
2906 ID,
2907 ParentID,
2908 (RecordData::value_type)Mod->Kind,
2909 Mod->IsFramework,
2910 Mod->IsExplicit,
2911 Mod->IsSystem,
2912 Mod->IsExternC,
2913 Mod->InferSubmodules,
2914 Mod->InferExplicitSubmodules,
2915 Mod->InferExportWildcard,
2916 Mod->ConfigMacrosExhaustive};
2917 Stream.EmitRecordWithBlob(DefinitionAbbrev, Record, Mod->Name);
2918 }
2919
2920 // Emit the requirements.
2921 for (const auto &R : Mod->Requirements) {
2922 RecordData::value_type Record[] = {SUBMODULE_REQUIRES, R.second};
2923 Stream.EmitRecordWithBlob(RequiresAbbrev, Record, R.first);
2924 }
2925
2926 // Emit the umbrella header, if there is one.
2927 if (auto UmbrellaHeader = Mod->getUmbrellaHeader()) {
2928 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_HEADER};
2929 Stream.EmitRecordWithBlob(UmbrellaAbbrev, Record,
2930 UmbrellaHeader.NameAsWritten);
2931 } else if (auto UmbrellaDir = Mod->getUmbrellaDir()) {
2932 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_DIR};
2933 Stream.EmitRecordWithBlob(UmbrellaDirAbbrev, Record,
2934 UmbrellaDir.NameAsWritten);
2935 }
2936
2937 // Emit the headers.
2938 struct {
2939 unsigned RecordKind;
2940 unsigned Abbrev;
2941 Module::HeaderKind HeaderKind;
2942 } HeaderLists[] = {
2943 {SUBMODULE_HEADER, HeaderAbbrev, Module::HK_Normal},
2944 {SUBMODULE_TEXTUAL_HEADER, TextualHeaderAbbrev, Module::HK_Textual},
2945 {SUBMODULE_PRIVATE_HEADER, PrivateHeaderAbbrev, Module::HK_Private},
2946 {SUBMODULE_PRIVATE_TEXTUAL_HEADER, PrivateTextualHeaderAbbrev,
2947 Module::HK_PrivateTextual},
2948 {SUBMODULE_EXCLUDED_HEADER, ExcludedHeaderAbbrev, Module::HK_Excluded}
2949 };
2950 for (auto &HL : HeaderLists) {
2951 RecordData::value_type Record[] = {HL.RecordKind};
2952 for (auto &H : Mod->Headers[HL.HeaderKind])
2953 Stream.EmitRecordWithBlob(HL.Abbrev, Record, H.NameAsWritten);
2954 }
2955
2956 // Emit the top headers.
2957 {
2958 auto TopHeaders = Mod->getTopHeaders(PP->getFileManager());
2959 RecordData::value_type Record[] = {SUBMODULE_TOPHEADER};
2960 for (auto *H : TopHeaders)
2961 Stream.EmitRecordWithBlob(TopHeaderAbbrev, Record, H->getName());
2962 }
2963
2964 // Emit the imports.
2965 if (!Mod->Imports.empty()) {
2966 RecordData Record;
2967 for (auto *I : Mod->Imports)
2968 Record.push_back(getSubmoduleID(I));
2969 Stream.EmitRecord(SUBMODULE_IMPORTS, Record);
2970 }
2971
2972 // Emit the exports.
2973 if (!Mod->Exports.empty()) {
2974 RecordData Record;
2975 for (const auto &E : Mod->Exports) {
2976 // FIXME: This may fail; we don't require that all exported modules
2977 // are local or imported.
2978 Record.push_back(getSubmoduleID(E.getPointer()));
2979 Record.push_back(E.getInt());
2980 }
2981 Stream.EmitRecord(SUBMODULE_EXPORTS, Record);
2982 }
2983
2984 //FIXME: How do we emit the 'use'd modules? They may not be submodules.
2985 // Might be unnecessary as use declarations are only used to build the
2986 // module itself.
2987
2988 // Emit the link libraries.
2989 for (const auto &LL : Mod->LinkLibraries) {
2990 RecordData::value_type Record[] = {SUBMODULE_LINK_LIBRARY,
2991 LL.IsFramework};
2992 Stream.EmitRecordWithBlob(LinkLibraryAbbrev, Record, LL.Library);
2993 }
2994
2995 // Emit the conflicts.
2996 for (const auto &C : Mod->Conflicts) {
2997 // FIXME: This may fail; we don't require that all conflicting modules
2998 // are local or imported.
2999 RecordData::value_type Record[] = {SUBMODULE_CONFLICT,
3000 getSubmoduleID(C.Other)};
3001 Stream.EmitRecordWithBlob(ConflictAbbrev, Record, C.Message);
3002 }
3003
3004 // Emit the configuration macros.
3005 for (const auto &CM : Mod->ConfigMacros) {
3006 RecordData::value_type Record[] = {SUBMODULE_CONFIG_MACRO};
3007 Stream.EmitRecordWithBlob(ConfigMacroAbbrev, Record, CM);
3008 }
3009
3010 // Emit the initializers, if any.
3011 RecordData Inits;
3012 for (Decl *D : Context->getModuleInitializers(Mod))
3013 Inits.push_back(GetDeclRef(D));
3014 if (!Inits.empty())
3015 Stream.EmitRecord(SUBMODULE_INITIALIZERS, Inits);
3016
3017 // Emit the name of the re-exported module, if any.
3018 if (!Mod->ExportAsModule.empty()) {
3019 RecordData::value_type Record[] = {SUBMODULE_EXPORT_AS};
3020 Stream.EmitRecordWithBlob(ExportAsAbbrev, Record, Mod->ExportAsModule);
3021 }
3022
3023 // Queue up the submodules of this module.
3024 for (auto *M : Mod->submodules())
3025 Q.push(M);
3026 }
3027
3028 Stream.ExitBlock();
3029
3030 assert((NextSubmoduleID - FirstSubmoduleID ==(static_cast <bool> ((NextSubmoduleID - FirstSubmoduleID
== getNumberOfModules(WritingModule)) && "Wrong # of submodules; found a reference to a non-local, "
"non-imported submodule?") ? void (0) : __assert_fail ("(NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule)) && \"Wrong # of submodules; found a reference to a non-local, \" \"non-imported submodule?\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3033, __extension__ __PRETTY_FUNCTION__))
3031 getNumberOfModules(WritingModule)) &&(static_cast <bool> ((NextSubmoduleID - FirstSubmoduleID
== getNumberOfModules(WritingModule)) && "Wrong # of submodules; found a reference to a non-local, "
"non-imported submodule?") ? void (0) : __assert_fail ("(NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule)) && \"Wrong # of submodules; found a reference to a non-local, \" \"non-imported submodule?\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3033, __extension__ __PRETTY_FUNCTION__))
3032 "Wrong # of submodules; found a reference to a non-local, "(static_cast <bool> ((NextSubmoduleID - FirstSubmoduleID
== getNumberOfModules(WritingModule)) && "Wrong # of submodules; found a reference to a non-local, "
"non-imported submodule?") ? void (0) : __assert_fail ("(NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule)) && \"Wrong # of submodules; found a reference to a non-local, \" \"non-imported submodule?\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3033, __extension__ __PRETTY_FUNCTION__))
3033 "non-imported submodule?")(static_cast <bool> ((NextSubmoduleID - FirstSubmoduleID
== getNumberOfModules(WritingModule)) && "Wrong # of submodules; found a reference to a non-local, "
"non-imported submodule?") ? void (0) : __assert_fail ("(NextSubmoduleID - FirstSubmoduleID == getNumberOfModules(WritingModule)) && \"Wrong # of submodules; found a reference to a non-local, \" \"non-imported submodule?\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3033, __extension__ __PRETTY_FUNCTION__))
;
3034}
3035
3036void ASTWriter::WritePragmaDiagnosticMappings(const DiagnosticsEngine &Diag,
3037 bool isModule) {
3038 llvm::SmallDenseMap<const DiagnosticsEngine::DiagState *, unsigned, 64>
3039 DiagStateIDMap;
3040 unsigned CurrID = 0;
3041 RecordData Record;
3042
3043 auto EncodeDiagStateFlags =
3044 [](const DiagnosticsEngine::DiagState *DS) -> unsigned {
3045 unsigned Result = (unsigned)DS->ExtBehavior;
3046 for (unsigned Val :
3047 {(unsigned)DS->IgnoreAllWarnings, (unsigned)DS->EnableAllWarnings,
3048 (unsigned)DS->WarningsAsErrors, (unsigned)DS->ErrorsAsFatal,
3049 (unsigned)DS->SuppressSystemWarnings})
3050 Result = (Result << 1) | Val;
3051 return Result;
3052 };
3053
3054 unsigned Flags = EncodeDiagStateFlags(Diag.DiagStatesByLoc.FirstDiagState);
3055 Record.push_back(Flags);
3056
3057 auto AddDiagState = [&](const DiagnosticsEngine::DiagState *State,
3058 bool IncludeNonPragmaStates) {
3059 // Ensure that the diagnostic state wasn't modified since it was created.
3060 // We will not correctly round-trip this information otherwise.
3061 assert(Flags == EncodeDiagStateFlags(State) &&(static_cast <bool> (Flags == EncodeDiagStateFlags(State
) && "diag state flags vary in single AST file") ? void
(0) : __assert_fail ("Flags == EncodeDiagStateFlags(State) && \"diag state flags vary in single AST file\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3062, __extension__ __PRETTY_FUNCTION__))
3062 "diag state flags vary in single AST file")(static_cast <bool> (Flags == EncodeDiagStateFlags(State
) && "diag state flags vary in single AST file") ? void
(0) : __assert_fail ("Flags == EncodeDiagStateFlags(State) && \"diag state flags vary in single AST file\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3062, __extension__ __PRETTY_FUNCTION__))
;
3063
3064 unsigned &DiagStateID = DiagStateIDMap[State];
3065 Record.push_back(DiagStateID);
3066
3067 if (DiagStateID == 0) {
3068 DiagStateID = ++CurrID;
3069
3070 // Add a placeholder for the number of mappings.
3071 auto SizeIdx = Record.size();
3072 Record.emplace_back();
3073 for (const auto &I : *State) {
3074 if (I.second.isPragma() || IncludeNonPragmaStates) {
3075 Record.push_back(I.first);
3076 Record.push_back(I.second.serialize());
3077 }
3078 }
3079 // Update the placeholder.
3080 Record[SizeIdx] = (Record.size() - SizeIdx) / 2;
3081 }
3082 };
3083
3084 AddDiagState(Diag.DiagStatesByLoc.FirstDiagState, isModule);
3085
3086 // Reserve a spot for the number of locations with state transitions.
3087 auto NumLocationsIdx = Record.size();
3088 Record.emplace_back();
3089
3090 // Emit the state transitions.
3091 unsigned NumLocations = 0;
3092 for (auto &FileIDAndFile : Diag.DiagStatesByLoc.Files) {
3093 if (!FileIDAndFile.first.isValid() ||
3094 !FileIDAndFile.second.HasLocalTransitions)
3095 continue;
3096 ++NumLocations;
3097
3098 SourceLocation Loc = Diag.SourceMgr->getComposedLoc(FileIDAndFile.first, 0);
3099 assert(!Loc.isInvalid() && "start loc for valid FileID is invalid")(static_cast <bool> (!Loc.isInvalid() && "start loc for valid FileID is invalid"
) ? void (0) : __assert_fail ("!Loc.isInvalid() && \"start loc for valid FileID is invalid\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3099, __extension__ __PRETTY_FUNCTION__))
;
3100 AddSourceLocation(Loc, Record);
3101
3102 Record.push_back(FileIDAndFile.second.StateTransitions.size());
3103 for (auto &StatePoint : FileIDAndFile.second.StateTransitions) {
3104 Record.push_back(StatePoint.Offset);
3105 AddDiagState(StatePoint.State, false);
3106 }
3107 }
3108
3109 // Backpatch the number of locations.
3110 Record[NumLocationsIdx] = NumLocations;
3111
3112 // Emit CurDiagStateLoc. Do it last in order to match source order.
3113 //
3114 // This also protects against a hypothetical corner case with simulating
3115 // -Werror settings for implicit modules in the ASTReader, where reading
3116 // CurDiagState out of context could change whether warning pragmas are
3117 // treated as errors.
3118 AddSourceLocation(Diag.DiagStatesByLoc.CurDiagStateLoc, Record);
3119 AddDiagState(Diag.DiagStatesByLoc.CurDiagState, false);
3120
3121 Stream.EmitRecord(DIAG_PRAGMA_MAPPINGS, Record);
3122}
3123
3124//===----------------------------------------------------------------------===//
3125// Type Serialization
3126//===----------------------------------------------------------------------===//
3127
3128/// \brief Write the representation of a type to the AST stream.
3129void ASTWriter::WriteType(QualType T) {
3130 TypeIdx &IdxRef = TypeIdxs[T];
3131 if (IdxRef.getIndex() == 0) // we haven't seen this type before.
3132 IdxRef = TypeIdx(NextTypeID++);
3133 TypeIdx Idx = IdxRef;
3134
3135 assert(Idx.getIndex() >= FirstTypeID && "Re-writing a type from a prior AST")(static_cast <bool> (Idx.getIndex() >= FirstTypeID &&
"Re-writing a type from a prior AST") ? void (0) : __assert_fail
("Idx.getIndex() >= FirstTypeID && \"Re-writing a type from a prior AST\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3135, __extension__ __PRETTY_FUNCTION__))
;
3136
3137 RecordData Record;
3138
3139 // Emit the type's representation.
3140 ASTTypeWriter W(*this, Record);
3141 W.Visit(T);
3142 uint64_t Offset = W.Emit();
3143
3144 // Record the offset for this type.
3145 unsigned Index = Idx.getIndex() - FirstTypeID;
3146 if (TypeOffsets.size() == Index)
3147 TypeOffsets.push_back(Offset);
3148 else if (TypeOffsets.size() < Index) {
3149 TypeOffsets.resize(Index + 1);
3150 TypeOffsets[Index] = Offset;
3151 } else {
3152 llvm_unreachable("Types emitted in wrong order")::llvm::llvm_unreachable_internal("Types emitted in wrong order"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3152)
;
3153 }
3154}
3155
3156//===----------------------------------------------------------------------===//
3157// Declaration Serialization
3158//===----------------------------------------------------------------------===//
3159
3160/// \brief Write the block containing all of the declaration IDs
3161/// lexically declared within the given DeclContext.
3162///
3163/// \returns the offset of the DECL_CONTEXT_LEXICAL block within the
3164/// bitstream, or 0 if no block was written.
3165uint64_t ASTWriter::WriteDeclContextLexicalBlock(ASTContext &Context,
3166 DeclContext *DC) {
3167 if (DC->decls_empty())
3168 return 0;
3169
3170 uint64_t Offset = Stream.GetCurrentBitNo();
3171 SmallVector<uint32_t, 128> KindDeclPairs;
3172 for (const auto *D : DC->decls()) {
3173 KindDeclPairs.push_back(D->getKind());
3174 KindDeclPairs.push_back(GetDeclRef(D));
3175 }
3176
3177 ++NumLexicalDeclContexts;
3178 RecordData::value_type Record[] = {DECL_CONTEXT_LEXICAL};
3179 Stream.EmitRecordWithBlob(DeclContextLexicalAbbrev, Record,
3180 bytes(KindDeclPairs));
3181 return Offset;
3182}
3183
3184void ASTWriter::WriteTypeDeclOffsets() {
3185 using namespace llvm;
3186
3187 // Write the type offsets array
3188 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3189 Abbrev->Add(BitCodeAbbrevOp(TYPE_OFFSET));
3190 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of types
3191 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base type index
3192 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // types block
3193 unsigned TypeOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3194 {
3195 RecordData::value_type Record[] = {TYPE_OFFSET, TypeOffsets.size(),
3196 FirstTypeID - NUM_PREDEF_TYPE_IDS};
3197 Stream.EmitRecordWithBlob(TypeOffsetAbbrev, Record, bytes(TypeOffsets));
3198 }
3199
3200 // Write the declaration offsets array
3201 Abbrev = std::make_shared<BitCodeAbbrev>();
3202 Abbrev->Add(BitCodeAbbrevOp(DECL_OFFSET));
3203 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of declarations
3204 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base decl ID
3205 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // declarations block
3206 unsigned DeclOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3207 {
3208 RecordData::value_type Record[] = {DECL_OFFSET, DeclOffsets.size(),
3209 FirstDeclID - NUM_PREDEF_DECL_IDS};
3210 Stream.EmitRecordWithBlob(DeclOffsetAbbrev, Record, bytes(DeclOffsets));
3211 }
3212}
3213
3214void ASTWriter::WriteFileDeclIDsMap() {
3215 using namespace llvm;
3216
3217 SmallVector<std::pair<FileID, DeclIDInFileInfo *>, 64> SortedFileDeclIDs(
3218 FileDeclIDs.begin(), FileDeclIDs.end());
3219 llvm::sort(SortedFileDeclIDs.begin(), SortedFileDeclIDs.end(),
3220 llvm::less_first());
3221
3222 // Join the vectors of DeclIDs from all files.
3223 SmallVector<DeclID, 256> FileGroupedDeclIDs;
3224 for (auto &FileDeclEntry : SortedFileDeclIDs) {
3225 DeclIDInFileInfo &Info = *FileDeclEntry.second;
3226 Info.FirstDeclIndex = FileGroupedDeclIDs.size();
3227 for (auto &LocDeclEntry : Info.DeclIDs)
3228 FileGroupedDeclIDs.push_back(LocDeclEntry.second);
3229 }
3230
3231 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3232 Abbrev->Add(BitCodeAbbrevOp(FILE_SORTED_DECLS));
3233 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3234 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3235 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
3236 RecordData::value_type Record[] = {FILE_SORTED_DECLS,
3237 FileGroupedDeclIDs.size()};
3238 Stream.EmitRecordWithBlob(AbbrevCode, Record, bytes(FileGroupedDeclIDs));
3239}
3240
3241void ASTWriter::WriteComments() {
3242 Stream.EnterSubblock(COMMENTS_BLOCK_ID, 3);
3243 ArrayRef<RawComment *> RawComments = Context->Comments.getComments();
3244 RecordData Record;
3245 for (const auto *I : RawComments) {
3246 Record.clear();
3247 AddSourceRange(I->getSourceRange(), Record);
3248 Record.push_back(I->getKind());
3249 Record.push_back(I->isTrailingComment());
3250 Record.push_back(I->isAlmostTrailingComment());
3251 Stream.EmitRecord(COMMENTS_RAW_COMMENT, Record);
3252 }
3253 Stream.ExitBlock();
3254}
3255
3256//===----------------------------------------------------------------------===//
3257// Global Method Pool and Selector Serialization
3258//===----------------------------------------------------------------------===//
3259
3260namespace {
3261
3262// Trait used for the on-disk hash table used in the method pool.
3263class ASTMethodPoolTrait {
3264 ASTWriter &Writer;
3265
3266public:
3267 using key_type = Selector;
3268 using key_type_ref = key_type;
3269
3270 struct data_type {
3271 SelectorID ID;
3272 ObjCMethodList Instance, Factory;
3273 };
3274 using data_type_ref = const data_type &;
3275
3276 using hash_value_type = unsigned;
3277 using offset_type = unsigned;
3278
3279 explicit ASTMethodPoolTrait(ASTWriter &Writer) : Writer(Writer) {}
3280
3281 static hash_value_type ComputeHash(Selector Sel) {
3282 return serialization::ComputeHash(Sel);
3283 }
3284
3285 std::pair<unsigned, unsigned>
3286 EmitKeyDataLength(raw_ostream& Out, Selector Sel,
3287 data_type_ref Methods) {
3288 using namespace llvm::support;
3289
3290 endian::Writer<little> LE(Out);
3291 unsigned KeyLen = 2 + (Sel.getNumArgs()? Sel.getNumArgs() * 4 : 4);
3292 LE.write<uint16_t>(KeyLen);
3293 unsigned DataLen = 4 + 2 + 2; // 2 bytes for each of the method counts
3294 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3295 Method = Method->getNext())
3296 if (Method->getMethod())
3297 DataLen += 4;
3298 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3299 Method = Method->getNext())
3300 if (Method->getMethod())
3301 DataLen += 4;
3302 LE.write<uint16_t>(DataLen);
3303 return std::make_pair(KeyLen, DataLen);
3304 }
3305
3306 void EmitKey(raw_ostream& Out, Selector Sel, unsigned) {
3307 using namespace llvm::support;
3308
3309 endian::Writer<little> LE(Out);
3310 uint64_t Start = Out.tell();
3311 assert((Start >> 32) == 0 && "Selector key offset too large")(static_cast <bool> ((Start >> 32) == 0 &&
"Selector key offset too large") ? void (0) : __assert_fail (
"(Start >> 32) == 0 && \"Selector key offset too large\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3311, __extension__ __PRETTY_FUNCTION__))
;
3312 Writer.SetSelectorOffset(Sel, Start);
3313 unsigned N = Sel.getNumArgs();
3314 LE.write<uint16_t>(N);
3315 if (N == 0)
3316 N = 1;
3317 for (unsigned I = 0; I != N; ++I)
3318 LE.write<uint32_t>(
3319 Writer.getIdentifierRef(Sel.getIdentifierInfoForSlot(I)));
3320 }
3321
3322 void EmitData(raw_ostream& Out, key_type_ref,
3323 data_type_ref Methods, unsigned DataLen) {
3324 using namespace llvm::support;
3325
3326 endian::Writer<little> LE(Out);
3327 uint64_t Start = Out.tell(); (void)Start;
3328 LE.write<uint32_t>(Methods.ID);
3329 unsigned NumInstanceMethods = 0;
3330 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3331 Method = Method->getNext())
3332 if (Method->getMethod())
3333 ++NumInstanceMethods;
3334
3335 unsigned NumFactoryMethods = 0;
3336 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3337 Method = Method->getNext())
3338 if (Method->getMethod())
3339 ++NumFactoryMethods;
3340
3341 unsigned InstanceBits = Methods.Instance.getBits();
3342 assert(InstanceBits < 4)(static_cast <bool> (InstanceBits < 4) ? void (0) : __assert_fail
("InstanceBits < 4", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3342, __extension__ __PRETTY_FUNCTION__))
;
3343 unsigned InstanceHasMoreThanOneDeclBit =
3344 Methods.Instance.hasMoreThanOneDecl();
3345 unsigned FullInstanceBits = (NumInstanceMethods << 3) |
3346 (InstanceHasMoreThanOneDeclBit << 2) |
3347 InstanceBits;
3348 unsigned FactoryBits = Methods.Factory.getBits();
3349 assert(FactoryBits < 4)(static_cast <bool> (FactoryBits < 4) ? void (0) : __assert_fail
("FactoryBits < 4", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3349, __extension__ __PRETTY_FUNCTION__))
;
3350 unsigned FactoryHasMoreThanOneDeclBit =
3351 Methods.Factory.hasMoreThanOneDecl();
3352 unsigned FullFactoryBits = (NumFactoryMethods << 3) |
3353 (FactoryHasMoreThanOneDeclBit << 2) |
3354 FactoryBits;
3355 LE.write<uint16_t>(FullInstanceBits);
3356 LE.write<uint16_t>(FullFactoryBits);
3357 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3358 Method = Method->getNext())
3359 if (Method->getMethod())
3360 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3361 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3362 Method = Method->getNext())
3363 if (Method->getMethod())
3364 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3365
3366 assert(Out.tell() - Start == DataLen && "Data length is wrong")(static_cast <bool> (Out.tell() - Start == DataLen &&
"Data length is wrong") ? void (0) : __assert_fail ("Out.tell() - Start == DataLen && \"Data length is wrong\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3366, __extension__ __PRETTY_FUNCTION__))
;
3367 }
3368};
3369
3370} // namespace
3371
3372/// \brief Write ObjC data: selectors and the method pool.
3373///
3374/// The method pool contains both instance and factory methods, stored
3375/// in an on-disk hash table indexed by the selector. The hash table also
3376/// contains an empty entry for every other selector known to Sema.
3377void ASTWriter::WriteSelectors(Sema &SemaRef) {
3378 using namespace llvm;
3379
3380 // Do we have to do anything at all?
3381 if (SemaRef.MethodPool.empty() && SelectorIDs.empty())
3382 return;
3383 unsigned NumTableEntries = 0;
3384 // Create and write out the blob that contains selectors and the method pool.
3385 {
3386 llvm::OnDiskChainedHashTableGenerator<ASTMethodPoolTrait> Generator;
3387 ASTMethodPoolTrait Trait(*this);
3388
3389 // Create the on-disk hash table representation. We walk through every
3390 // selector we've seen and look it up in the method pool.
3391 SelectorOffsets.resize(NextSelectorID - FirstSelectorID);
3392 for (auto &SelectorAndID : SelectorIDs) {
3393 Selector S = SelectorAndID.first;
3394 SelectorID ID = SelectorAndID.second;
3395 Sema::GlobalMethodPool::iterator F = SemaRef.MethodPool.find(S);
3396 ASTMethodPoolTrait::data_type Data = {
3397 ID,
3398 ObjCMethodList(),
3399 ObjCMethodList()
3400 };
3401 if (F != SemaRef.MethodPool.end()) {
3402 Data.Instance = F->second.first;
3403 Data.Factory = F->second.second;
3404 }
3405 // Only write this selector if it's not in an existing AST or something
3406 // changed.
3407 if (Chain && ID < FirstSelectorID) {
3408 // Selector already exists. Did it change?
3409 bool changed = false;
3410 for (ObjCMethodList *M = &Data.Instance;
3411 !changed && M && M->getMethod(); M = M->getNext()) {
3412 if (!M->getMethod()->isFromASTFile())
3413 changed = true;
3414 }
3415 for (ObjCMethodList *M = &Data.Factory; !changed && M && M->getMethod();
3416 M = M->getNext()) {
3417 if (!M->getMethod()->isFromASTFile())
3418 changed = true;
3419 }
3420 if (!changed)
3421 continue;
3422 } else if (Data.Instance.getMethod() || Data.Factory.getMethod()) {
3423 // A new method pool entry.
3424 ++NumTableEntries;
3425 }
3426 Generator.insert(S, Data, Trait);
3427 }
3428
3429 // Create the on-disk hash table in a buffer.
3430 SmallString<4096> MethodPool;
3431 uint32_t BucketOffset;
3432 {
3433 using namespace llvm::support;
3434
3435 ASTMethodPoolTrait Trait(*this);
3436 llvm::raw_svector_ostream Out(MethodPool);
3437 // Make sure that no bucket is at offset 0
3438 endian::Writer<little>(Out).write<uint32_t>(0);
3439 BucketOffset = Generator.Emit(Out, Trait);
3440 }
3441
3442 // Create a blob abbreviation
3443 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3444 Abbrev->Add(BitCodeAbbrevOp(METHOD_POOL));
3445 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3446 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3447 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3448 unsigned MethodPoolAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3449
3450 // Write the method pool
3451 {
3452 RecordData::value_type Record[] = {METHOD_POOL, BucketOffset,
3453 NumTableEntries};
3454 Stream.EmitRecordWithBlob(MethodPoolAbbrev, Record, MethodPool);
3455 }
3456
3457 // Create a blob abbreviation for the selector table offsets.
3458 Abbrev = std::make_shared<BitCodeAbbrev>();
3459 Abbrev->Add(BitCodeAbbrevOp(SELECTOR_OFFSETS));
3460 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size
3461 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3462 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3463 unsigned SelectorOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3464
3465 // Write the selector offsets table.
3466 {
3467 RecordData::value_type Record[] = {
3468 SELECTOR_OFFSETS, SelectorOffsets.size(),
3469 FirstSelectorID - NUM_PREDEF_SELECTOR_IDS};
3470 Stream.EmitRecordWithBlob(SelectorOffsetAbbrev, Record,
3471 bytes(SelectorOffsets));
3472 }
3473 }
3474}
3475
3476/// \brief Write the selectors referenced in @selector expression into AST file.
3477void ASTWriter::WriteReferencedSelectorsPool(Sema &SemaRef) {
3478 using namespace llvm;
3479
3480 if (SemaRef.ReferencedSelectors.empty())
3481 return;
3482
3483 RecordData Record;
3484 ASTRecordWriter Writer(*this, Record);
3485
3486 // Note: this writes out all references even for a dependent AST. But it is
3487 // very tricky to fix, and given that @selector shouldn't really appear in
3488 // headers, probably not worth it. It's not a correctness issue.
3489 for (auto &SelectorAndLocation : SemaRef.ReferencedSelectors) {
3490 Selector Sel = SelectorAndLocation.first;
3491 SourceLocation Loc = SelectorAndLocation.second;
3492 Writer.AddSelectorRef(Sel);
3493 Writer.AddSourceLocation(Loc);
3494 }
3495 Writer.Emit(REFERENCED_SELECTOR_POOL);
3496}
3497
3498//===----------------------------------------------------------------------===//
3499// Identifier Table Serialization
3500//===----------------------------------------------------------------------===//
3501
3502/// Determine the declaration that should be put into the name lookup table to
3503/// represent the given declaration in this module. This is usually D itself,
3504/// but if D was imported and merged into a local declaration, we want the most
3505/// recent local declaration instead. The chosen declaration will be the most
3506/// recent declaration in any module that imports this one.
3507static NamedDecl *getDeclForLocalLookup(const LangOptions &LangOpts,
3508 NamedDecl *D) {
3509 if (!LangOpts.Modules || !D->isFromASTFile())
3510 return D;
3511
3512 if (Decl *Redecl = D->getPreviousDecl()) {
3513 // For Redeclarable decls, a prior declaration might be local.
3514 for (; Redecl; Redecl = Redecl->getPreviousDecl()) {
3515 // If we find a local decl, we're done.
3516 if (!Redecl->isFromASTFile()) {
3517 // Exception: in very rare cases (for injected-class-names), not all
3518 // redeclarations are in the same semantic context. Skip ones in a
3519 // different context. They don't go in this lookup table at all.
3520 if (!Redecl->getDeclContext()->getRedeclContext()->Equals(
3521 D->getDeclContext()->getRedeclContext()))
3522 continue;
3523 return cast<NamedDecl>(Redecl);
3524 }
3525
3526 // If we find a decl from a (chained-)PCH stop since we won't find a
3527 // local one.
3528 if (Redecl->getOwningModuleID() == 0)
3529 break;
3530 }
3531 } else if (Decl *First = D->getCanonicalDecl()) {
3532 // For Mergeable decls, the first decl might be local.
3533 if (!First->isFromASTFile())
3534 return cast<NamedDecl>(First);
3535 }
3536
3537 // All declarations are imported. Our most recent declaration will also be
3538 // the most recent one in anyone who imports us.
3539 return D;
3540}
3541
3542namespace {
3543
3544class ASTIdentifierTableTrait {
3545 ASTWriter &Writer;
3546 Preprocessor &PP;
3547 IdentifierResolver &IdResolver;
3548 bool IsModule;
3549 bool NeedDecls;
3550 ASTWriter::RecordData *InterestingIdentifierOffsets;
3551
3552 /// \brief Determines whether this is an "interesting" identifier that needs a
3553 /// full IdentifierInfo structure written into the hash table. Notably, this
3554 /// doesn't check whether the name has macros defined; use PublicMacroIterator
3555 /// to check that.
3556 bool isInterestingIdentifier(const IdentifierInfo *II, uint64_t MacroOffset) {
3557 if (MacroOffset ||
3558 II->isPoisoned() ||
3559 (IsModule ? II->hasRevertedBuiltin() : II->getObjCOrBuiltinID()) ||
3560 II->hasRevertedTokenIDToIdentifier() ||
3561 (NeedDecls && II->getFETokenInfo<void>()))
3562 return true;
3563
3564 return false;
3565 }
3566
3567public:
3568 using key_type = IdentifierInfo *;
3569 using key_type_ref = key_type;
3570
3571 using data_type = IdentID;
3572 using data_type_ref = data_type;
3573
3574 using hash_value_type = unsigned;
3575 using offset_type = unsigned;
3576
3577 ASTIdentifierTableTrait(ASTWriter &Writer, Preprocessor &PP,
3578 IdentifierResolver &IdResolver, bool IsModule,
3579 ASTWriter::RecordData *InterestingIdentifierOffsets)
3580 : Writer(Writer), PP(PP), IdResolver(IdResolver), IsModule(IsModule),
3581 NeedDecls(!IsModule || !Writer.getLangOpts().CPlusPlus),
3582 InterestingIdentifierOffsets(InterestingIdentifierOffsets) {}
3583
3584 bool needDecls() const { return NeedDecls; }
3585
3586 static hash_value_type ComputeHash(const IdentifierInfo* II) {
3587 return llvm::djbHash(II->getName());
3588 }
3589
3590 bool isInterestingIdentifier(const IdentifierInfo *II) {
3591 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3592 return isInterestingIdentifier(II, MacroOffset);
3593 }
3594
3595 bool isInterestingNonMacroIdentifier(const IdentifierInfo *II) {
3596 return isInterestingIdentifier(II, 0);
3597 }
3598
3599 std::pair<unsigned, unsigned>
3600 EmitKeyDataLength(raw_ostream& Out, IdentifierInfo* II, IdentID ID) {
3601 unsigned KeyLen = II->getLength() + 1;
3602 unsigned DataLen = 4; // 4 bytes for the persistent ID << 1
3603 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3604 if (isInterestingIdentifier(II, MacroOffset)) {
3605 DataLen += 2; // 2 bytes for builtin ID
3606 DataLen += 2; // 2 bytes for flags
3607 if (MacroOffset)
3608 DataLen += 4; // MacroDirectives offset.
3609
3610 if (NeedDecls) {
3611 for (IdentifierResolver::iterator D = IdResolver.begin(II),
3612 DEnd = IdResolver.end();
3613 D != DEnd; ++D)
3614 DataLen += 4;
3615 }
3616 }
3617
3618 using namespace llvm::support;
3619
3620 endian::Writer<little> LE(Out);
3621
3622 assert((uint16_t)DataLen == DataLen && (uint16_t)KeyLen == KeyLen)(static_cast <bool> ((uint16_t)DataLen == DataLen &&
(uint16_t)KeyLen == KeyLen) ? void (0) : __assert_fail ("(uint16_t)DataLen == DataLen && (uint16_t)KeyLen == KeyLen"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3622, __extension__ __PRETTY_FUNCTION__))
;
3623 LE.write<uint16_t>(DataLen);
3624 // We emit the key length after the data length so that every
3625 // string is preceded by a 16-bit length. This matches the PTH
3626 // format for storing identifiers.
3627 LE.write<uint16_t>(KeyLen);
3628 return std::make_pair(KeyLen, DataLen);
3629 }
3630
3631 void EmitKey(raw_ostream& Out, const IdentifierInfo* II,
3632 unsigned KeyLen) {
3633 // Record the location of the key data. This is used when generating
3634 // the mapping from persistent IDs to strings.
3635 Writer.SetIdentifierOffset(II, Out.tell());
3636
3637 // Emit the offset of the key/data length information to the interesting
3638 // identifiers table if necessary.
3639 if (InterestingIdentifierOffsets && isInterestingIdentifier(II))
3640 InterestingIdentifierOffsets->push_back(Out.tell() - 4);
3641
3642 Out.write(II->getNameStart(), KeyLen);
3643 }
3644
3645 void EmitData(raw_ostream& Out, IdentifierInfo* II,
3646 IdentID ID, unsigned) {
3647 using namespace llvm::support;
3648
3649 endian::Writer<little> LE(Out);
3650
3651 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3652 if (!isInterestingIdentifier(II, MacroOffset)) {
3653 LE.write<uint32_t>(ID << 1);
3654 return;
3655 }
3656
3657 LE.write<uint32_t>((ID << 1) | 0x01);
3658 uint32_t Bits = (uint32_t)II->getObjCOrBuiltinID();
3659 assert((Bits & 0xffff) == Bits && "ObjCOrBuiltinID too big for ASTReader.")(static_cast <bool> ((Bits & 0xffff) == Bits &&
"ObjCOrBuiltinID too big for ASTReader.") ? void (0) : __assert_fail
("(Bits & 0xffff) == Bits && \"ObjCOrBuiltinID too big for ASTReader.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3659, __extension__ __PRETTY_FUNCTION__))
;
3660 LE.write<uint16_t>(Bits);
3661 Bits = 0;
3662 bool HadMacroDefinition = MacroOffset != 0;
3663 Bits = (Bits << 1) | unsigned(HadMacroDefinition);
3664 Bits = (Bits << 1) | unsigned(II->isExtensionToken());
3665 Bits = (Bits << 1) | unsigned(II->isPoisoned());
3666 Bits = (Bits << 1) | unsigned(II->hasRevertedBuiltin());
3667 Bits = (Bits << 1) | unsigned(II->hasRevertedTokenIDToIdentifier());
3668 Bits = (Bits << 1) | unsigned(II->isCPlusPlusOperatorKeyword());
3669 LE.write<uint16_t>(Bits);
3670
3671 if (HadMacroDefinition)
3672 LE.write<uint32_t>(MacroOffset);
3673
3674 if (NeedDecls) {
3675 // Emit the declaration IDs in reverse order, because the
3676 // IdentifierResolver provides the declarations as they would be
3677 // visible (e.g., the function "stat" would come before the struct
3678 // "stat"), but the ASTReader adds declarations to the end of the list
3679 // (so we need to see the struct "stat" before the function "stat").
3680 // Only emit declarations that aren't from a chained PCH, though.
3681 SmallVector<NamedDecl *, 16> Decls(IdResolver.begin(II),
3682 IdResolver.end());
3683 for (SmallVectorImpl<NamedDecl *>::reverse_iterator D = Decls.rbegin(),
3684 DEnd = Decls.rend();
3685 D != DEnd; ++D)
3686 LE.write<uint32_t>(
3687 Writer.getDeclID(getDeclForLocalLookup(PP.getLangOpts(), *D)));
3688 }
3689 }
3690};
3691
3692} // namespace
3693
3694/// \brief Write the identifier table into the AST file.
3695///
3696/// The identifier table consists of a blob containing string data
3697/// (the actual identifiers themselves) and a separate "offsets" index
3698/// that maps identifier IDs to locations within the blob.
3699void ASTWriter::WriteIdentifierTable(Preprocessor &PP,
3700 IdentifierResolver &IdResolver,
3701 bool IsModule) {
3702 using namespace llvm;
3703
3704 RecordData InterestingIdents;
3705
3706 // Create and write out the blob that contains the identifier
3707 // strings.
3708 {
3709 llvm::OnDiskChainedHashTableGenerator<ASTIdentifierTableTrait> Generator;
3710 ASTIdentifierTableTrait Trait(
3711 *this, PP, IdResolver, IsModule,
3712 (getLangOpts().CPlusPlus && IsModule) ? &InterestingIdents : nullptr);
3713
3714 // Look for any identifiers that were named while processing the
3715 // headers, but are otherwise not needed. We add these to the hash
3716 // table to enable checking of the predefines buffer in the case
3717 // where the user adds new macro definitions when building the AST
3718 // file.
3719 SmallVector<const IdentifierInfo *, 128> IIs;
3720 for (const auto &ID : PP.getIdentifierTable())
3721 IIs.push_back(ID.second);
3722 // Sort the identifiers lexicographically before getting them references so
3723 // that their order is stable.
3724 llvm::sort(IIs.begin(), IIs.end(), llvm::less_ptr<IdentifierInfo>());
3725 for (const IdentifierInfo *II : IIs)
3726 if (Trait.isInterestingNonMacroIdentifier(II))
3727 getIdentifierRef(II);
3728
3729 // Create the on-disk hash table representation. We only store offsets
3730 // for identifiers that appear here for the first time.
3731 IdentifierOffsets.resize(NextIdentID - FirstIdentID);
3732 for (auto IdentIDPair : IdentifierIDs) {
3733 auto *II = const_cast<IdentifierInfo *>(IdentIDPair.first);
3734 IdentID ID = IdentIDPair.second;
3735 assert(II && "NULL identifier in identifier table")(static_cast <bool> (II && "NULL identifier in identifier table"
) ? void (0) : __assert_fail ("II && \"NULL identifier in identifier table\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3735, __extension__ __PRETTY_FUNCTION__))
;
3736 // Write out identifiers if either the ID is local or the identifier has
3737 // changed since it was loaded.
3738 if (ID >= FirstIdentID || !Chain || !II->isFromAST()
3739 || II->hasChangedSinceDeserialization() ||
3740 (Trait.needDecls() &&
3741 II->hasFETokenInfoChangedSinceDeserialization()))
3742 Generator.insert(II, ID, Trait);
3743 }
3744
3745 // Create the on-disk hash table in a buffer.
3746 SmallString<4096> IdentifierTable;
3747 uint32_t BucketOffset;
3748 {
3749 using namespace llvm::support;
3750
3751 llvm::raw_svector_ostream Out(IdentifierTable);
3752 // Make sure that no bucket is at offset 0
3753 endian::Writer<little>(Out).write<uint32_t>(0);
3754 BucketOffset = Generator.Emit(Out, Trait);
3755 }
3756
3757 // Create a blob abbreviation
3758 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3759 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_TABLE));
3760 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3761 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3762 unsigned IDTableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3763
3764 // Write the identifier table
3765 RecordData::value_type Record[] = {IDENTIFIER_TABLE, BucketOffset};
3766 Stream.EmitRecordWithBlob(IDTableAbbrev, Record, IdentifierTable);
3767 }
3768
3769 // Write the offsets table for identifier IDs.
3770 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3771 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_OFFSET));
3772 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of identifiers
3773 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3774 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3775 unsigned IdentifierOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3776
3777#ifndef NDEBUG
3778 for (unsigned I = 0, N = IdentifierOffsets.size(); I != N; ++I)
3779 assert(IdentifierOffsets[I] && "Missing identifier offset?")(static_cast <bool> (IdentifierOffsets[I] && "Missing identifier offset?"
) ? void (0) : __assert_fail ("IdentifierOffsets[I] && \"Missing identifier offset?\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3779, __extension__ __PRETTY_FUNCTION__))
;
3780#endif
3781
3782 RecordData::value_type Record[] = {IDENTIFIER_OFFSET,
3783 IdentifierOffsets.size(),
3784 FirstIdentID - NUM_PREDEF_IDENT_IDS};
3785 Stream.EmitRecordWithBlob(IdentifierOffsetAbbrev, Record,
3786 bytes(IdentifierOffsets));
3787
3788 // In C++, write the list of interesting identifiers (those that are
3789 // defined as macros, poisoned, or similar unusual things).
3790 if (!InterestingIdents.empty())
3791 Stream.EmitRecord(INTERESTING_IDENTIFIERS, InterestingIdents);
3792}
3793
3794//===----------------------------------------------------------------------===//
3795// DeclContext's Name Lookup Table Serialization
3796//===----------------------------------------------------------------------===//
3797
3798namespace {
3799
3800// Trait used for the on-disk hash table used in the method pool.
3801class ASTDeclContextNameLookupTrait {
3802 ASTWriter &Writer;
3803 llvm::SmallVector<DeclID, 64> DeclIDs;
3804
3805public:
3806 using key_type = DeclarationNameKey;
3807 using key_type_ref = key_type;
3808
3809 /// A start and end index into DeclIDs, representing a sequence of decls.
3810 using data_type = std::pair<unsigned, unsigned>;
3811 using data_type_ref = const data_type &;
3812
3813 using hash_value_type = unsigned;
3814 using offset_type = unsigned;
3815
3816 explicit ASTDeclContextNameLookupTrait(ASTWriter &Writer) : Writer(Writer) {}
3817
3818 template<typename Coll>
3819 data_type getData(const Coll &Decls) {
3820 unsigned Start = DeclIDs.size();
3821 for (NamedDecl *D : Decls) {
3822 DeclIDs.push_back(
3823 Writer.GetDeclRef(getDeclForLocalLookup(Writer.getLangOpts(), D)));
3824 }
3825 return std::make_pair(Start, DeclIDs.size());
3826 }
3827
3828 data_type ImportData(const reader::ASTDeclContextNameLookupTrait::data_type &FromReader) {
3829 unsigned Start = DeclIDs.size();
3830 for (auto ID : FromReader)
3831 DeclIDs.push_back(ID);
3832 return std::make_pair(Start, DeclIDs.size());
3833 }
3834
3835 static bool EqualKey(key_type_ref a, key_type_ref b) {
3836 return a == b;
3837 }
3838
3839 hash_value_type ComputeHash(DeclarationNameKey Name) {
3840 return Name.getHash();
3841 }
3842
3843 void EmitFileRef(raw_ostream &Out, ModuleFile *F) const {
3844 assert(Writer.hasChain() &&(static_cast <bool> (Writer.hasChain() && "have reference to loaded module file but no chain?"
) ? void (0) : __assert_fail ("Writer.hasChain() && \"have reference to loaded module file but no chain?\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3845, __extension__ __PRETTY_FUNCTION__))
3845 "have reference to loaded module file but no chain?")(static_cast <bool> (Writer.hasChain() && "have reference to loaded module file but no chain?"
) ? void (0) : __assert_fail ("Writer.hasChain() && \"have reference to loaded module file but no chain?\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3845, __extension__ __PRETTY_FUNCTION__))
;
3846
3847 using namespace llvm::support;
3848
3849 endian::Writer<little>(Out)
3850 .write<uint32_t>(Writer.getChain()->getModuleFileID(F));
3851 }
3852
3853 std::pair<unsigned, unsigned> EmitKeyDataLength(raw_ostream &Out,
3854 DeclarationNameKey Name,
3855 data_type_ref Lookup) {
3856 using namespace llvm::support;
3857
3858 endian::Writer<little> LE(Out);
3859 unsigned KeyLen = 1;
3860 switch (Name.getKind()) {
3861 case DeclarationName::Identifier:
3862 case DeclarationName::ObjCZeroArgSelector:
3863 case DeclarationName::ObjCOneArgSelector:
3864 case DeclarationName::ObjCMultiArgSelector:
3865 case DeclarationName::CXXLiteralOperatorName:
3866 case DeclarationName::CXXDeductionGuideName:
3867 KeyLen += 4;
3868 break;
3869 case DeclarationName::CXXOperatorName:
3870 KeyLen += 1;
3871 break;
3872 case DeclarationName::CXXConstructorName:
3873 case DeclarationName::CXXDestructorName:
3874 case DeclarationName::CXXConversionFunctionName:
3875 case DeclarationName::CXXUsingDirective:
3876 break;
3877 }
3878 LE.write<uint16_t>(KeyLen);
3879
3880 // 4 bytes for each DeclID.
3881 unsigned DataLen = 4 * (Lookup.second - Lookup.first);
3882 assert(uint16_t(DataLen) == DataLen &&(static_cast <bool> (uint16_t(DataLen) == DataLen &&
"too many decls for serialized lookup result") ? void (0) : __assert_fail
("uint16_t(DataLen) == DataLen && \"too many decls for serialized lookup result\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3883, __extension__ __PRETTY_FUNCTION__))
3883 "too many decls for serialized lookup result")(static_cast <bool> (uint16_t(DataLen) == DataLen &&
"too many decls for serialized lookup result") ? void (0) : __assert_fail
("uint16_t(DataLen) == DataLen && \"too many decls for serialized lookup result\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3883, __extension__ __PRETTY_FUNCTION__))
;
3884 LE.write<uint16_t>(DataLen);
3885
3886 return std::make_pair(KeyLen, DataLen);
3887 }
3888
3889 void EmitKey(raw_ostream &Out, DeclarationNameKey Name, unsigned) {
3890 using namespace llvm::support;
3891
3892 endian::Writer<little> LE(Out);
3893 LE.write<uint8_t>(Name.getKind());
3894 switch (Name.getKind()) {
3895 case DeclarationName::Identifier:
3896 case DeclarationName::CXXLiteralOperatorName:
3897 case DeclarationName::CXXDeductionGuideName:
3898 LE.write<uint32_t>(Writer.getIdentifierRef(Name.getIdentifier()));
3899 return;
3900 case DeclarationName::ObjCZeroArgSelector:
3901 case DeclarationName::ObjCOneArgSelector:
3902 case DeclarationName::ObjCMultiArgSelector:
3903 LE.write<uint32_t>(Writer.getSelectorRef(Name.getSelector()));
3904 return;
3905 case DeclarationName::CXXOperatorName:
3906 assert(Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS &&(static_cast <bool> (Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS
&& "Invalid operator?") ? void (0) : __assert_fail (
"Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS && \"Invalid operator?\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3907, __extension__ __PRETTY_FUNCTION__))
3907 "Invalid operator?")(static_cast <bool> (Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS
&& "Invalid operator?") ? void (0) : __assert_fail (
"Name.getOperatorKind() < NUM_OVERLOADED_OPERATORS && \"Invalid operator?\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3907, __extension__ __PRETTY_FUNCTION__))
;
3908 LE.write<uint8_t>(Name.getOperatorKind());
3909 return;
3910 case DeclarationName::CXXConstructorName:
3911 case DeclarationName::CXXDestructorName:
3912 case DeclarationName::CXXConversionFunctionName:
3913 case DeclarationName::CXXUsingDirective:
3914 return;
3915 }
3916
3917 llvm_unreachable("Invalid name kind?")::llvm::llvm_unreachable_internal("Invalid name kind?", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3917)
;
3918 }
3919
3920 void EmitData(raw_ostream &Out, key_type_ref, data_type Lookup,
3921 unsigned DataLen) {
3922 using namespace llvm::support;
3923
3924 endian::Writer<little> LE(Out);
3925 uint64_t Start = Out.tell(); (void)Start;
3926 for (unsigned I = Lookup.first, N = Lookup.second; I != N; ++I)
3927 LE.write<uint32_t>(DeclIDs[I]);
3928 assert(Out.tell() - Start == DataLen && "Data length is wrong")(static_cast <bool> (Out.tell() - Start == DataLen &&
"Data length is wrong") ? void (0) : __assert_fail ("Out.tell() - Start == DataLen && \"Data length is wrong\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3928, __extension__ __PRETTY_FUNCTION__))
;
3929 }
3930};
3931
3932} // namespace
3933
3934bool ASTWriter::isLookupResultExternal(StoredDeclsList &Result,
3935 DeclContext *DC) {
3936 return Result.hasExternalDecls() && DC->NeedToReconcileExternalVisibleStorage;
3937}
3938
3939bool ASTWriter::isLookupResultEntirelyExternal(StoredDeclsList &Result,
3940 DeclContext *DC) {
3941 for (auto *D : Result.getLookupResult())
3942 if (!getDeclForLocalLookup(getLangOpts(), D)->isFromASTFile())
3943 return false;
3944
3945 return true;
3946}
3947
3948void
3949ASTWriter::GenerateNameLookupTable(const DeclContext *ConstDC,
3950 llvm::SmallVectorImpl<char> &LookupTable) {
3951 assert(!ConstDC->HasLazyLocalLexicalLookups &&(static_cast <bool> (!ConstDC->HasLazyLocalLexicalLookups
&& !ConstDC->HasLazyExternalLexicalLookups &&
"must call buildLookups first") ? void (0) : __assert_fail (
"!ConstDC->HasLazyLocalLexicalLookups && !ConstDC->HasLazyExternalLexicalLookups && \"must call buildLookups first\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3953, __extension__ __PRETTY_FUNCTION__))
3952 !ConstDC->HasLazyExternalLexicalLookups &&(static_cast <bool> (!ConstDC->HasLazyLocalLexicalLookups
&& !ConstDC->HasLazyExternalLexicalLookups &&
"must call buildLookups first") ? void (0) : __assert_fail (
"!ConstDC->HasLazyLocalLexicalLookups && !ConstDC->HasLazyExternalLexicalLookups && \"must call buildLookups first\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3953, __extension__ __PRETTY_FUNCTION__))
3953 "must call buildLookups first")(static_cast <bool> (!ConstDC->HasLazyLocalLexicalLookups
&& !ConstDC->HasLazyExternalLexicalLookups &&
"must call buildLookups first") ? void (0) : __assert_fail (
"!ConstDC->HasLazyLocalLexicalLookups && !ConstDC->HasLazyExternalLexicalLookups && \"must call buildLookups first\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3953, __extension__ __PRETTY_FUNCTION__))
;
3954
3955 // FIXME: We need to build the lookups table, which is logically const.
3956 auto *DC = const_cast<DeclContext*>(ConstDC);
3957 assert(DC == DC->getPrimaryContext() && "only primary DC has lookup table")(static_cast <bool> (DC == DC->getPrimaryContext() &&
"only primary DC has lookup table") ? void (0) : __assert_fail
("DC == DC->getPrimaryContext() && \"only primary DC has lookup table\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3957, __extension__ __PRETTY_FUNCTION__))
;
3958
3959 // Create the on-disk hash table representation.
3960 MultiOnDiskHashTableGenerator<reader::ASTDeclContextNameLookupTrait,
3961 ASTDeclContextNameLookupTrait> Generator;
3962 ASTDeclContextNameLookupTrait Trait(*this);
3963
3964 // The first step is to collect the declaration names which we need to
3965 // serialize into the name lookup table, and to collect them in a stable
3966 // order.
3967 SmallVector<DeclarationName, 16> Names;
3968
3969 // We also build up small sets of the constructor and conversion function
3970 // names which are visible.
3971 llvm::SmallSet<DeclarationName, 8> ConstructorNameSet, ConversionNameSet;
3972
3973 for (auto &Lookup : *DC->buildLookup()) {
3974 auto &Name = Lookup.first;
3975 auto &Result = Lookup.second;
3976
3977 // If there are no local declarations in our lookup result, we
3978 // don't need to write an entry for the name at all. If we can't
3979 // write out a lookup set without performing more deserialization,
3980 // just skip this entry.
3981 if (isLookupResultExternal(Result, DC) &&
3982 isLookupResultEntirelyExternal(Result, DC))
3983 continue;
3984
3985 // We also skip empty results. If any of the results could be external and
3986 // the currently available results are empty, then all of the results are
3987 // external and we skip it above. So the only way we get here with an empty
3988 // results is when no results could have been external *and* we have
3989 // external results.
3990 //
3991 // FIXME: While we might want to start emitting on-disk entries for negative
3992 // lookups into a decl context as an optimization, today we *have* to skip
3993 // them because there are names with empty lookup results in decl contexts
3994 // which we can't emit in any stable ordering: we lookup constructors and
3995 // conversion functions in the enclosing namespace scope creating empty
3996 // results for them. This in almost certainly a bug in Clang's name lookup,
3997 // but that is likely to be hard or impossible to fix and so we tolerate it
3998 // here by omitting lookups with empty results.
3999 if (Lookup.second.getLookupResult().empty())
4000 continue;
4001
4002 switch (Lookup.first.getNameKind()) {
4003 default:
4004 Names.push_back(Lookup.first);
4005 break;
4006
4007 case DeclarationName::CXXConstructorName:
4008 assert(isa<CXXRecordDecl>(DC) &&(static_cast <bool> (isa<CXXRecordDecl>(DC) &&
"Cannot have a constructor name outside of a class!") ? void
(0) : __assert_fail ("isa<CXXRecordDecl>(DC) && \"Cannot have a constructor name outside of a class!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4009, __extension__ __PRETTY_FUNCTION__))
4009 "Cannot have a constructor name outside of a class!")(static_cast <bool> (isa<CXXRecordDecl>(DC) &&
"Cannot have a constructor name outside of a class!") ? void
(0) : __assert_fail ("isa<CXXRecordDecl>(DC) && \"Cannot have a constructor name outside of a class!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4009, __extension__ __PRETTY_FUNCTION__))
;
4010 ConstructorNameSet.insert(Name);
4011 break;
4012
4013 case DeclarationName::CXXConversionFunctionName:
4014 assert(isa<CXXRecordDecl>(DC) &&(static_cast <bool> (isa<CXXRecordDecl>(DC) &&
"Cannot have a conversion function name outside of a class!"
) ? void (0) : __assert_fail ("isa<CXXRecordDecl>(DC) && \"Cannot have a conversion function name outside of a class!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4015, __extension__ __PRETTY_FUNCTION__))
4015 "Cannot have a conversion function name outside of a class!")(static_cast <bool> (isa<CXXRecordDecl>(DC) &&
"Cannot have a conversion function name outside of a class!"
) ? void (0) : __assert_fail ("isa<CXXRecordDecl>(DC) && \"Cannot have a conversion function name outside of a class!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4015, __extension__ __PRETTY_FUNCTION__))
;
4016 ConversionNameSet.insert(Name);
4017 break;
4018 }
4019 }
4020
4021 // Sort the names into a stable order.
4022 llvm::sort(Names.begin(), Names.end());
4023
4024 if (auto *D = dyn_cast<CXXRecordDecl>(DC)) {
4025 // We need to establish an ordering of constructor and conversion function
4026 // names, and they don't have an intrinsic ordering.
4027
4028 // First we try the easy case by forming the current context's constructor
4029 // name and adding that name first. This is a very useful optimization to
4030 // avoid walking the lexical declarations in many cases, and it also
4031 // handles the only case where a constructor name can come from some other
4032 // lexical context -- when that name is an implicit constructor merged from
4033 // another declaration in the redecl chain. Any non-implicit constructor or
4034 // conversion function which doesn't occur in all the lexical contexts
4035 // would be an ODR violation.
4036 auto ImplicitCtorName = Context->DeclarationNames.getCXXConstructorName(
4037 Context->getCanonicalType(Context->getRecordType(D)));
4038 if (ConstructorNameSet.erase(ImplicitCtorName))
4039 Names.push_back(ImplicitCtorName);
4040
4041 // If we still have constructors or conversion functions, we walk all the
4042 // names in the decl and add the constructors and conversion functions
4043 // which are visible in the order they lexically occur within the context.
4044 if (!ConstructorNameSet.empty() || !ConversionNameSet.empty())
4045 for (Decl *ChildD : cast<CXXRecordDecl>(DC)->decls())
4046 if (auto *ChildND = dyn_cast<NamedDecl>(ChildD)) {
4047 auto Name = ChildND->getDeclName();
4048 switch (Name.getNameKind()) {
4049 default:
4050 continue;
4051
4052 case DeclarationName::CXXConstructorName:
4053 if (ConstructorNameSet.erase(Name))
4054 Names.push_back(Name);
4055 break;
4056
4057 case DeclarationName::CXXConversionFunctionName:
4058 if (ConversionNameSet.erase(Name))
4059 Names.push_back(Name);
4060 break;
4061 }
4062
4063 if (ConstructorNameSet.empty() && ConversionNameSet.empty())
4064 break;
4065 }
4066
4067 assert(ConstructorNameSet.empty() && "Failed to find all of the visible "(static_cast <bool> (ConstructorNameSet.empty() &&
"Failed to find all of the visible " "constructors by walking all the "
"lexical members of the context.") ? void (0) : __assert_fail
("ConstructorNameSet.empty() && \"Failed to find all of the visible \" \"constructors by walking all the \" \"lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4069, __extension__ __PRETTY_FUNCTION__))
4068 "constructors by walking all the "(static_cast <bool> (ConstructorNameSet.empty() &&
"Failed to find all of the visible " "constructors by walking all the "
"lexical members of the context.") ? void (0) : __assert_fail
("ConstructorNameSet.empty() && \"Failed to find all of the visible \" \"constructors by walking all the \" \"lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4069, __extension__ __PRETTY_FUNCTION__))
4069 "lexical members of the context.")(static_cast <bool> (ConstructorNameSet.empty() &&
"Failed to find all of the visible " "constructors by walking all the "
"lexical members of the context.") ? void (0) : __assert_fail
("ConstructorNameSet.empty() && \"Failed to find all of the visible \" \"constructors by walking all the \" \"lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4069, __extension__ __PRETTY_FUNCTION__))
;
4070 assert(ConversionNameSet.empty() && "Failed to find all of the visible "(static_cast <bool> (ConversionNameSet.empty() &&
"Failed to find all of the visible " "conversion functions by walking all "
"the lexical members of the context.") ? void (0) : __assert_fail
("ConversionNameSet.empty() && \"Failed to find all of the visible \" \"conversion functions by walking all \" \"the lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4072, __extension__ __PRETTY_FUNCTION__))
4071 "conversion functions by walking all "(static_cast <bool> (ConversionNameSet.empty() &&
"Failed to find all of the visible " "conversion functions by walking all "
"the lexical members of the context.") ? void (0) : __assert_fail
("ConversionNameSet.empty() && \"Failed to find all of the visible \" \"conversion functions by walking all \" \"the lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4072, __extension__ __PRETTY_FUNCTION__))
4072 "the lexical members of the context.")(static_cast <bool> (ConversionNameSet.empty() &&
"Failed to find all of the visible " "conversion functions by walking all "
"the lexical members of the context.") ? void (0) : __assert_fail
("ConversionNameSet.empty() && \"Failed to find all of the visible \" \"conversion functions by walking all \" \"the lexical members of the context.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4072, __extension__ __PRETTY_FUNCTION__))
;
4073 }
4074
4075 // Next we need to do a lookup with each name into this decl context to fully
4076 // populate any results from external sources. We don't actually use the
4077 // results of these lookups because we only want to use the results after all
4078 // results have been loaded and the pointers into them will be stable.
4079 for (auto &Name : Names)
4080 DC->lookup(Name);
4081
4082 // Now we need to insert the results for each name into the hash table. For
4083 // constructor names and conversion function names, we actually need to merge
4084 // all of the results for them into one list of results each and insert
4085 // those.
4086 SmallVector<NamedDecl *, 8> ConstructorDecls;
4087 SmallVector<NamedDecl *, 8> ConversionDecls;
4088
4089 // Now loop over the names, either inserting them or appending for the two
4090 // special cases.
4091 for (auto &Name : Names) {
4092 DeclContext::lookup_result Result = DC->noload_lookup(Name);
4093
4094 switch (Name.getNameKind()) {
4095 default:
4096 Generator.insert(Name, Trait.getData(Result), Trait);
4097 break;
4098
4099 case DeclarationName::CXXConstructorName:
4100 ConstructorDecls.append(Result.begin(), Result.end());
4101 break;
4102
4103 case DeclarationName::CXXConversionFunctionName:
4104 ConversionDecls.append(Result.begin(), Result.end());
4105 break;
4106 }
4107 }
4108
4109 // Handle our two special cases if we ended up having any. We arbitrarily use
4110 // the first declaration's name here because the name itself isn't part of
4111 // the key, only the kind of name is used.
4112 if (!ConstructorDecls.empty())
4113 Generator.insert(ConstructorDecls.front()->getDeclName(),
4114 Trait.getData(ConstructorDecls), Trait);
4115 if (!ConversionDecls.empty())
4116 Generator.insert(ConversionDecls.front()->getDeclName(),
4117 Trait.getData(ConversionDecls), Trait);
4118
4119 // Create the on-disk hash table. Also emit the existing imported and
4120 // merged table if there is one.
4121 auto *Lookups = Chain ? Chain->getLoadedLookupTables(DC) : nullptr;
4122 Generator.emit(LookupTable, Trait, Lookups ? &Lookups->Table : nullptr);
4123}
4124
4125/// \brief Write the block containing all of the declaration IDs
4126/// visible from the given DeclContext.
4127///
4128/// \returns the offset of the DECL_CONTEXT_VISIBLE block within the
4129/// bitstream, or 0 if no block was written.
4130uint64_t ASTWriter::WriteDeclContextVisibleBlock(ASTContext &Context,
4131 DeclContext *DC) {
4132 // If we imported a key declaration of this namespace, write the visible
4133 // lookup results as an update record for it rather than including them
4134 // on this declaration. We will only look at key declarations on reload.
4135 if (isa<NamespaceDecl>(DC) && Chain &&
4136 Chain->getKeyDeclaration(cast<Decl>(DC))->isFromASTFile()) {
4137 // Only do this once, for the first local declaration of the namespace.
4138 for (auto *Prev = cast<NamespaceDecl>(DC)->getPreviousDecl(); Prev;
4139 Prev = Prev->getPreviousDecl())
4140 if (!Prev->isFromASTFile())
4141 return 0;
4142
4143 // Note that we need to emit an update record for the primary context.
4144 UpdatedDeclContexts.insert(DC->getPrimaryContext());
4145
4146 // Make sure all visible decls are written. They will be recorded later. We
4147 // do this using a side data structure so we can sort the names into
4148 // a deterministic order.
4149 StoredDeclsMap *Map = DC->getPrimaryContext()->buildLookup();
4150 SmallVector<std::pair<DeclarationName, DeclContext::lookup_result>, 16>
4151 LookupResults;
4152 if (Map) {
4153 LookupResults.reserve(Map->size());
4154 for (auto &Entry : *Map)
4155 LookupResults.push_back(
4156 std::make_pair(Entry.first, Entry.second.getLookupResult()));
4157 }
4158
4159 llvm::sort(LookupResults.begin(), LookupResults.end(), llvm::less_first());
4160 for (auto &NameAndResult : LookupResults) {
4161 DeclarationName Name = NameAndResult.first;
4162 DeclContext::lookup_result Result = NameAndResult.second;
4163 if (Name.getNameKind() == DeclarationName::CXXConstructorName ||
4164 Name.getNameKind() == DeclarationName::CXXConversionFunctionName) {
4165 // We have to work around a name lookup bug here where negative lookup
4166 // results for these names get cached in namespace lookup tables (these
4167 // names should never be looked up in a namespace).
4168 assert(Result.empty() && "Cannot have a constructor or conversion "(static_cast <bool> (Result.empty() && "Cannot have a constructor or conversion "
"function name in a namespace!") ? void (0) : __assert_fail (
"Result.empty() && \"Cannot have a constructor or conversion \" \"function name in a namespace!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4169, __extension__ __PRETTY_FUNCTION__))
4169 "function name in a namespace!")(static_cast <bool> (Result.empty() && "Cannot have a constructor or conversion "
"function name in a namespace!") ? void (0) : __assert_fail (
"Result.empty() && \"Cannot have a constructor or conversion \" \"function name in a namespace!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4169, __extension__ __PRETTY_FUNCTION__))
;
4170 continue;
4171 }
4172
4173 for (NamedDecl *ND : Result)
4174 if (!ND->isFromASTFile())
4175 GetDeclRef(ND);
4176 }
4177
4178 return 0;
4179 }
4180
4181 if (DC->getPrimaryContext() != DC)
4182 return 0;
4183
4184 // Skip contexts which don't support name lookup.
4185 if (!DC->isLookupContext())
4186 return 0;
4187
4188 // If not in C++, we perform name lookup for the translation unit via the
4189 // IdentifierInfo chains, don't bother to build a visible-declarations table.
4190 if (DC->isTranslationUnit() && !Context.getLangOpts().CPlusPlus)
4191 return 0;
4192
4193 // Serialize the contents of the mapping used for lookup. Note that,
4194 // although we have two very different code paths, the serialized
4195 // representation is the same for both cases: a declaration name,
4196 // followed by a size, followed by references to the visible
4197 // declarations that have that name.
4198 uint64_t Offset = Stream.GetCurrentBitNo();
4199 StoredDeclsMap *Map = DC->buildLookup();
4200 if (!Map || Map->empty())
4201 return 0;
4202
4203 // Create the on-disk hash table in a buffer.
4204 SmallString<4096> LookupTable;
4205 GenerateNameLookupTable(DC, LookupTable);
4206
4207 // Write the lookup table
4208 RecordData::value_type Record[] = {DECL_CONTEXT_VISIBLE};
4209 Stream.EmitRecordWithBlob(DeclContextVisibleLookupAbbrev, Record,
4210 LookupTable);
4211 ++NumVisibleDeclContexts;
4212 return Offset;
4213}
4214
4215/// \brief Write an UPDATE_VISIBLE block for the given context.
4216///
4217/// UPDATE_VISIBLE blocks contain the declarations that are added to an existing
4218/// DeclContext in a dependent AST file. As such, they only exist for the TU
4219/// (in C++), for namespaces, and for classes with forward-declared unscoped
4220/// enumeration members (in C++11).
4221void ASTWriter::WriteDeclContextVisibleUpdate(const DeclContext *DC) {
4222 StoredDeclsMap *Map = DC->getLookupPtr();
4223 if (!Map || Map->empty())
4224 return;
4225
4226 // Create the on-disk hash table in a buffer.
4227 SmallString<4096> LookupTable;
4228 GenerateNameLookupTable(DC, LookupTable);
4229
4230 // If we're updating a namespace, select a key declaration as the key for the
4231 // update record; those are the only ones that will be checked on reload.
4232 if (isa<NamespaceDecl>(DC))
4233 DC = cast<DeclContext>(Chain->getKeyDeclaration(cast<Decl>(DC)));
4234
4235 // Write the lookup table
4236 RecordData::value_type Record[] = {UPDATE_VISIBLE, getDeclID(cast<Decl>(DC))};
4237 Stream.EmitRecordWithBlob(UpdateVisibleAbbrev, Record, LookupTable);
4238}
4239
4240/// \brief Write an FP_PRAGMA_OPTIONS block for the given FPOptions.
4241void ASTWriter::WriteFPPragmaOptions(const FPOptions &Opts) {
4242 RecordData::value_type Record[] = {Opts.getInt()};
4243 Stream.EmitRecord(FP_PRAGMA_OPTIONS, Record);
4244}
4245
4246/// \brief Write an OPENCL_EXTENSIONS block for the given OpenCLOptions.
4247void ASTWriter::WriteOpenCLExtensions(Sema &SemaRef) {
4248 if (!SemaRef.Context.getLangOpts().OpenCL)
4249 return;
4250
4251 const OpenCLOptions &Opts = SemaRef.getOpenCLOptions();
4252 RecordData Record;
4253 for (const auto &I:Opts.OptMap) {
4254 AddString(I.getKey(), Record);
4255 auto V = I.getValue();
4256 Record.push_back(V.Supported ? 1 : 0);
4257 Record.push_back(V.Enabled ? 1 : 0);
4258 Record.push_back(V.Avail);
4259 Record.push_back(V.Core);
4260 }
4261 Stream.EmitRecord(OPENCL_EXTENSIONS, Record);
4262}
4263
4264void ASTWriter::WriteOpenCLExtensionTypes(Sema &SemaRef) {
4265 if (!SemaRef.Context.getLangOpts().OpenCL)
4266 return;
4267
4268 RecordData Record;
4269 for (const auto &I : SemaRef.OpenCLTypeExtMap) {
4270 Record.push_back(
4271 static_cast<unsigned>(getTypeID(I.first->getCanonicalTypeInternal())));
4272 Record.push_back(I.second.size());
4273 for (auto Ext : I.second)
4274 AddString(Ext, Record);
4275 }
4276 Stream.EmitRecord(OPENCL_EXTENSION_TYPES, Record);
4277}
4278
4279void ASTWriter::WriteOpenCLExtensionDecls(Sema &SemaRef) {
4280 if (!SemaRef.Context.getLangOpts().OpenCL)
4281 return;
4282
4283 RecordData Record;
4284 for (const auto &I : SemaRef.OpenCLDeclExtMap) {
4285 Record.push_back(getDeclID(I.first));
4286 Record.push_back(static_cast<unsigned>(I.second.size()));
4287 for (auto Ext : I.second)
4288 AddString(Ext, Record);
4289 }
4290 Stream.EmitRecord(OPENCL_EXTENSION_DECLS, Record);
4291}
4292
4293void ASTWriter::WriteCUDAPragmas(Sema &SemaRef) {
4294 if (SemaRef.ForceCUDAHostDeviceDepth > 0) {
4295 RecordData::value_type Record[] = {SemaRef.ForceCUDAHostDeviceDepth};
4296 Stream.EmitRecord(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH, Record);
4297 }
4298}
4299
4300void ASTWriter::WriteObjCCategories() {
4301 SmallVector<ObjCCategoriesInfo, 2> CategoriesMap;
4302 RecordData Categories;
4303
4304 for (unsigned I = 0, N = ObjCClassesWithCategories.size(); I != N; ++I) {
4305 unsigned Size = 0;
4306 unsigned StartIndex = Categories.size();
4307
4308 ObjCInterfaceDecl *Class = ObjCClassesWithCategories[I];
4309
4310 // Allocate space for the size.
4311 Categories.push_back(0);
4312
4313 // Add the categories.
4314 for (ObjCInterfaceDecl::known_categories_iterator
4315 Cat = Class->known_categories_begin(),
4316 CatEnd = Class->known_categories_end();
4317 Cat != CatEnd; ++Cat, ++Size) {
4318 assert(getDeclID(*Cat) != 0 && "Bogus category")(static_cast <bool> (getDeclID(*Cat) != 0 && "Bogus category"
) ? void (0) : __assert_fail ("getDeclID(*Cat) != 0 && \"Bogus category\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4318, __extension__ __PRETTY_FUNCTION__))
;
4319 AddDeclRef(*Cat, Categories);
4320 }
4321
4322 // Update the size.
4323 Categories[StartIndex] = Size;
4324
4325 // Record this interface -> category map.
4326 ObjCCategoriesInfo CatInfo = { getDeclID(Class), StartIndex };
4327 CategoriesMap.push_back(CatInfo);
4328 }
4329
4330 // Sort the categories map by the definition ID, since the reader will be
4331 // performing binary searches on this information.
4332 llvm::array_pod_sort(CategoriesMap.begin(), CategoriesMap.end());
4333
4334 // Emit the categories map.
4335 using namespace llvm;
4336
4337 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4338 Abbrev->Add(BitCodeAbbrevOp(OBJC_CATEGORIES_MAP));
4339 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # of entries
4340 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4341 unsigned AbbrevID = Stream.EmitAbbrev(std::move(Abbrev));
4342
4343 RecordData::value_type Record[] = {OBJC_CATEGORIES_MAP, CategoriesMap.size()};
4344 Stream.EmitRecordWithBlob(AbbrevID, Record,
4345 reinterpret_cast<char *>(CategoriesMap.data()),
4346 CategoriesMap.size() * sizeof(ObjCCategoriesInfo));
4347
4348 // Emit the category lists.
4349 Stream.EmitRecord(OBJC_CATEGORIES, Categories);
4350}
4351
4352void ASTWriter::WriteLateParsedTemplates(Sema &SemaRef) {
4353 Sema::LateParsedTemplateMapT &LPTMap = SemaRef.LateParsedTemplateMap;
4354
4355 if (LPTMap.empty())
4356 return;
4357
4358 RecordData Record;
4359 for (auto &LPTMapEntry : LPTMap) {
4360 const FunctionDecl *FD = LPTMapEntry.first;
4361 LateParsedTemplate &LPT = *LPTMapEntry.second;
4362 AddDeclRef(FD, Record);
4363 AddDeclRef(LPT.D, Record);
4364 Record.push_back(LPT.Toks.size());
4365
4366 for (const auto &Tok : LPT.Toks) {
4367 AddToken(Tok, Record);
4368 }
4369 }
4370 Stream.EmitRecord(LATE_PARSED_TEMPLATE, Record);
4371}
4372
4373/// \brief Write the state of 'pragma clang optimize' at the end of the module.
4374void ASTWriter::WriteOptimizePragmaOptions(Sema &SemaRef) {
4375 RecordData Record;
4376 SourceLocation PragmaLoc = SemaRef.getOptimizeOffPragmaLocation();
4377 AddSourceLocation(PragmaLoc, Record);
4378 Stream.EmitRecord(OPTIMIZE_PRAGMA_OPTIONS, Record);
4379}
4380
4381/// \brief Write the state of 'pragma ms_struct' at the end of the module.
4382void ASTWriter::WriteMSStructPragmaOptions(Sema &SemaRef) {
4383 RecordData Record;
4384 Record.push_back(SemaRef.MSStructPragmaOn ? PMSST_ON : PMSST_OFF);
4385 Stream.EmitRecord(MSSTRUCT_PRAGMA_OPTIONS, Record);
4386}
4387
4388/// \brief Write the state of 'pragma pointers_to_members' at the end of the
4389//module.
4390void ASTWriter::WriteMSPointersToMembersPragmaOptions(Sema &SemaRef) {
4391 RecordData Record;
4392 Record.push_back(SemaRef.MSPointerToMemberRepresentationMethod);
4393 AddSourceLocation(SemaRef.ImplicitMSInheritanceAttrLoc, Record);
4394 Stream.EmitRecord(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS, Record);
4395}
4396
4397/// \brief Write the state of 'pragma pack' at the end of the module.
4398void ASTWriter::WritePackPragmaOptions(Sema &SemaRef) {
4399 // Don't serialize pragma pack state for modules, since it should only take
4400 // effect on a per-submodule basis.
4401 if (WritingModule)
4402 return;
4403
4404 RecordData Record;
4405 Record.push_back(SemaRef.PackStack.CurrentValue);
4406 AddSourceLocation(SemaRef.PackStack.CurrentPragmaLocation, Record);
4407 Record.push_back(SemaRef.PackStack.Stack.size());
4408 for (const auto &StackEntry : SemaRef.PackStack.Stack) {
4409 Record.push_back(StackEntry.Value);
4410 AddSourceLocation(StackEntry.PragmaLocation, Record);
4411 AddSourceLocation(StackEntry.PragmaPushLocation, Record);
4412 AddString(StackEntry.StackSlotLabel, Record);
4413 }
4414 Stream.EmitRecord(PACK_PRAGMA_OPTIONS, Record);
4415}
4416
4417void ASTWriter::WriteModuleFileExtension(Sema &SemaRef,
4418 ModuleFileExtensionWriter &Writer) {
4419 // Enter the extension block.
4420 Stream.EnterSubblock(EXTENSION_BLOCK_ID, 4);
4421
4422 // Emit the metadata record abbreviation.
4423 auto Abv = std::make_shared<llvm::BitCodeAbbrev>();
4424 Abv->Add(llvm::BitCodeAbbrevOp(EXTENSION_METADATA));
4425 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4426 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4427 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4428 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4429 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4430 unsigned Abbrev = Stream.EmitAbbrev(std::move(Abv));
4431
4432 // Emit the metadata record.
4433 RecordData Record;
4434 auto Metadata = Writer.getExtension()->getExtensionMetadata();
4435 Record.push_back(EXTENSION_METADATA);
4436 Record.push_back(Metadata.MajorVersion);
4437 Record.push_back(Metadata.MinorVersion);
4438 Record.push_back(Metadata.BlockName.size());
4439 Record.push_back(Metadata.UserInfo.size());
4440 SmallString<64> Buffer;
4441 Buffer += Metadata.BlockName;
4442 Buffer += Metadata.UserInfo;
4443 Stream.EmitRecordWithBlob(Abbrev, Record, Buffer);
4444
4445 // Emit the contents of the extension block.
4446 Writer.writeExtensionContents(SemaRef, Stream);
4447
4448 // Exit the extension block.
4449 Stream.ExitBlock();
4450}
4451
4452//===----------------------------------------------------------------------===//
4453// General Serialization Routines
4454//===----------------------------------------------------------------------===//
4455
4456/// \brief Emit the list of attributes to the specified record.
4457void ASTRecordWriter::AddAttributes(ArrayRef<const Attr *> Attrs) {
4458 auto &Record = *this;
4459 Record.push_back(Attrs.size());
4460 for (const auto *A : Attrs) {
4461 Record.push_back(A->getKind()); // FIXME: stable encoding, target attrs
4462 Record.AddSourceRange(A->getRange());
4463
4464#include "clang/Serialization/AttrPCHWrite.inc"
4465 }
4466}
4467
4468void ASTWriter::AddToken(const Token &Tok, RecordDataImpl &Record) {
4469 AddSourceLocation(Tok.getLocation(), Record);
4470 Record.push_back(Tok.getLength());
4471
4472 // FIXME: When reading literal tokens, reconstruct the literal pointer
4473 // if it is needed.
4474 AddIdentifierRef(Tok.getIdentifierInfo(), Record);
4475 // FIXME: Should translate token kind to a stable encoding.
4476 Record.push_back(Tok.getKind());
4477 // FIXME: Should translate token flags to a stable encoding.
4478 Record.push_back(Tok.getFlags());
4479}
4480
4481void ASTWriter::AddString(StringRef Str, RecordDataImpl &Record) {
4482 Record.push_back(Str.size());
4483 Record.insert(Record.end(), Str.begin(), Str.end());
4484}
4485
4486bool ASTWriter::PreparePathForOutput(SmallVectorImpl<char> &Path) {
4487 assert(Context && "should have context when outputting path")(static_cast <bool> (Context && "should have context when outputting path"
) ? void (0) : __assert_fail ("Context && \"should have context when outputting path\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4487, __extension__ __PRETTY_FUNCTION__))
;
4488
4489 bool Changed =
4490 cleanPathForOutput(Context->getSourceManager().getFileManager(), Path);
4491
4492 // Remove a prefix to make the path relative, if relevant.
4493 const char *PathBegin = Path.data();
4494 const char *PathPtr =
4495 adjustFilenameForRelocatableAST(PathBegin, BaseDirectory);
4496 if (PathPtr != PathBegin) {
4497 Path.erase(Path.begin(), Path.begin() + (PathPtr - PathBegin));
4498 Changed = true;
4499 }
4500
4501 return Changed;
4502}
4503
4504void ASTWriter::AddPath(StringRef Path, RecordDataImpl &Record) {
4505 SmallString<128> FilePath(Path);
4506 PreparePathForOutput(FilePath);
4507 AddString(FilePath, Record);
4508}
4509
4510void ASTWriter::EmitRecordWithPath(unsigned Abbrev, RecordDataRef Record,
4511 StringRef Path) {
4512 SmallString<128> FilePath(Path);
4513 PreparePathForOutput(FilePath);
4514 Stream.EmitRecordWithBlob(Abbrev, Record, FilePath);
4515}
4516
4517void ASTWriter::AddVersionTuple(const VersionTuple &Version,
4518 RecordDataImpl &Record) {
4519 Record.push_back(Version.getMajor());
4520 if (Optional<unsigned> Minor = Version.getMinor())
4521 Record.push_back(*Minor + 1);
4522 else
4523 Record.push_back(0);
4524 if (Optional<unsigned> Subminor = Version.getSubminor())
4525 Record.push_back(*Subminor + 1);
4526 else
4527 Record.push_back(0);
4528}
4529
4530/// \brief Note that the identifier II occurs at the given offset
4531/// within the identifier table.
4532void ASTWriter::SetIdentifierOffset(const IdentifierInfo *II, uint32_t Offset) {
4533 IdentID ID = IdentifierIDs[II];
4534 // Only store offsets new to this AST file. Other identifier names are looked
4535 // up earlier in the chain and thus don't need an offset.
4536 if (ID >= FirstIdentID)
4537 IdentifierOffsets[ID - FirstIdentID] = Offset;
4538}
4539
4540/// \brief Note that the selector Sel occurs at the given offset
4541/// within the method pool/selector table.
4542void ASTWriter::SetSelectorOffset(Selector Sel, uint32_t Offset) {
4543 unsigned ID = SelectorIDs[Sel];
4544 assert(ID && "Unknown selector")(static_cast <bool> (ID && "Unknown selector") ?
void (0) : __assert_fail ("ID && \"Unknown selector\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4544, __extension__ __PRETTY_FUNCTION__))
;
4545 // Don't record offsets for selectors that are also available in a different
4546 // file.
4547 if (ID < FirstSelectorID)
4548 return;
4549 SelectorOffsets[ID - FirstSelectorID] = Offset;
4550}
4551
4552ASTWriter::ASTWriter(llvm::BitstreamWriter &Stream,
4553 SmallVectorImpl<char> &Buffer, MemoryBufferCache &PCMCache,
4554 ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions,
4555 bool IncludeTimestamps)
4556 : Stream(Stream), Buffer(Buffer), PCMCache(PCMCache),
4557 IncludeTimestamps(IncludeTimestamps) {
4558 for (const auto &Ext : Extensions) {
4559 if (auto Writer = Ext->createExtensionWriter(*this))
4560 ModuleFileExtensionWriters.push_back(std::move(Writer));
4561 }
4562}
4563
4564ASTWriter::~ASTWriter() {
4565 llvm::DeleteContainerSeconds(FileDeclIDs);
4566}
4567
4568const LangOptions &ASTWriter::getLangOpts() const {
4569 assert(WritingAST && "can't determine lang opts when not writing AST")(static_cast <bool> (WritingAST && "can't determine lang opts when not writing AST"
) ? void (0) : __assert_fail ("WritingAST && \"can't determine lang opts when not writing AST\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4569, __extension__ __PRETTY_FUNCTION__))
;
4570 return Context->getLangOpts();
4571}
4572
4573time_t ASTWriter::getTimestampForOutput(const FileEntry *E) const {
4574 return IncludeTimestamps ? E->getModificationTime() : 0;
4575}
4576
4577ASTFileSignature ASTWriter::WriteAST(Sema &SemaRef,
4578 const std::string &OutputFile,
4579 Module *WritingModule, StringRef isysroot,
4580 bool hasErrors) {
4581 WritingAST = true;
4582
4583 ASTHasCompilerErrors = hasErrors;
4584
4585 // Emit the file header.
4586 Stream.Emit((unsigned)'C', 8);
4587 Stream.Emit((unsigned)'P', 8);
4588 Stream.Emit((unsigned)'C', 8);
4589 Stream.Emit((unsigned)'H', 8);
4590
4591 WriteBlockInfoBlock();
4592
4593 Context = &SemaRef.Context;
4594 PP = &SemaRef.PP;
4595 this->WritingModule = WritingModule;
4596 ASTFileSignature Signature =
4597 WriteASTCore(SemaRef, isysroot, OutputFile, WritingModule);
4598 Context = nullptr;
4599 PP = nullptr;
4600 this->WritingModule = nullptr;
4601 this->BaseDirectory.clear();
4602
4603 WritingAST = false;
4604 if (SemaRef.Context.getLangOpts().ImplicitModules && WritingModule) {
4605 // Construct MemoryBuffer and update buffer manager.
4606 PCMCache.addBuffer(OutputFile,
4607 llvm::MemoryBuffer::getMemBufferCopy(
4608 StringRef(Buffer.begin(), Buffer.size())));
4609 }
4610 return Signature;
4611}
4612
4613template<typename Vector>
4614static void AddLazyVectorDecls(ASTWriter &Writer, Vector &Vec,
4615 ASTWriter::RecordData &Record) {
4616 for (typename Vector::iterator I = Vec.begin(nullptr, true), E = Vec.end();
4617 I != E; ++I) {
4618 Writer.AddDeclRef(*I, Record);
4619 }
4620}
4621
4622ASTFileSignature ASTWriter::WriteASTCore(Sema &SemaRef, StringRef isysroot,
4623 const std::string &OutputFile,
4624 Module *WritingModule) {
4625 using namespace llvm;
4626
4627 bool isModule = WritingModule != nullptr;
4628
4629 // Make sure that the AST reader knows to finalize itself.
4630 if (Chain)
4631 Chain->finalizeForWriting();
4632
4633 ASTContext &Context = SemaRef.Context;
4634 Preprocessor &PP = SemaRef.PP;
4635
4636 // Set up predefined declaration IDs.
4637 auto RegisterPredefDecl = [&] (Decl *D, PredefinedDeclIDs ID) {
4638 if (D) {
4639 assert(D->isCanonicalDecl() && "predefined decl is not canonical")(static_cast <bool> (D->isCanonicalDecl() &&
"predefined decl is not canonical") ? void (0) : __assert_fail
("D->isCanonicalDecl() && \"predefined decl is not canonical\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4639, __extension__ __PRETTY_FUNCTION__))
;
4640 DeclIDs[D] = ID;
4641 }
4642 };
4643 RegisterPredefDecl(Context.getTranslationUnitDecl(),
4644 PREDEF_DECL_TRANSLATION_UNIT_ID);
4645 RegisterPredefDecl(Context.ObjCIdDecl, PREDEF_DECL_OBJC_ID_ID);
4646 RegisterPredefDecl(Context.ObjCSelDecl, PREDEF_DECL_OBJC_SEL_ID);
4647 RegisterPredefDecl(Context.ObjCClassDecl, PREDEF_DECL_OBJC_CLASS_ID);
4648 RegisterPredefDecl(Context.ObjCProtocolClassDecl,
4649 PREDEF_DECL_OBJC_PROTOCOL_ID);
4650 RegisterPredefDecl(Context.Int128Decl, PREDEF_DECL_INT_128_ID);
4651 RegisterPredefDecl(Context.UInt128Decl, PREDEF_DECL_UNSIGNED_INT_128_ID);
4652 RegisterPredefDecl(Context.ObjCInstanceTypeDecl,
4653 PREDEF_DECL_OBJC_INSTANCETYPE_ID);
4654 RegisterPredefDecl(Context.BuiltinVaListDecl, PREDEF_DECL_BUILTIN_VA_LIST_ID);
4655 RegisterPredefDecl(Context.VaListTagDecl, PREDEF_DECL_VA_LIST_TAG);
4656 RegisterPredefDecl(Context.BuiltinMSVaListDecl,
4657 PREDEF_DECL_BUILTIN_MS_VA_LIST_ID);
4658 RegisterPredefDecl(Context.ExternCContext, PREDEF_DECL_EXTERN_C_CONTEXT_ID);
4659 RegisterPredefDecl(Context.MakeIntegerSeqDecl,
4660 PREDEF_DECL_MAKE_INTEGER_SEQ_ID);
4661 RegisterPredefDecl(Context.CFConstantStringTypeDecl,
4662 PREDEF_DECL_CF_CONSTANT_STRING_ID);
4663 RegisterPredefDecl(Context.CFConstantStringTagDecl,
4664 PREDEF_DECL_CF_CONSTANT_STRING_TAG_ID);
4665 RegisterPredefDecl(Context.TypePackElementDecl,
4666 PREDEF_DECL_TYPE_PACK_ELEMENT_ID);
4667
4668 // Build a record containing all of the tentative definitions in this file, in
4669 // TentativeDefinitions order. Generally, this record will be empty for
4670 // headers.
4671 RecordData TentativeDefinitions;
4672 AddLazyVectorDecls(*this, SemaRef.TentativeDefinitions, TentativeDefinitions);
4673
4674 // Build a record containing all of the file scoped decls in this file.
4675 RecordData UnusedFileScopedDecls;
4676 if (!isModule)
4677 AddLazyVectorDecls(*this, SemaRef.UnusedFileScopedDecls,
4678 UnusedFileScopedDecls);
4679
4680 // Build a record containing all of the delegating constructors we still need
4681 // to resolve.
4682 RecordData DelegatingCtorDecls;
4683 if (!isModule)
4684 AddLazyVectorDecls(*this, SemaRef.DelegatingCtorDecls, DelegatingCtorDecls);
4685
4686 // Write the set of weak, undeclared identifiers. We always write the
4687 // entire table, since later PCH files in a PCH chain are only interested in
4688 // the results at the end of the chain.
4689 RecordData WeakUndeclaredIdentifiers;
4690 for (auto &WeakUndeclaredIdentifier : SemaRef.WeakUndeclaredIdentifiers) {
4691 IdentifierInfo *II = WeakUndeclaredIdentifier.first;
4692 WeakInfo &WI = WeakUndeclaredIdentifier.second;
4693 AddIdentifierRef(II, WeakUndeclaredIdentifiers);
4694 AddIdentifierRef(WI.getAlias(), WeakUndeclaredIdentifiers);
4695 AddSourceLocation(WI.getLocation(), WeakUndeclaredIdentifiers);
4696 WeakUndeclaredIdentifiers.push_back(WI.getUsed());
4697 }
4698
4699 // Build a record containing all of the ext_vector declarations.
4700 RecordData ExtVectorDecls;
4701 AddLazyVectorDecls(*this, SemaRef.ExtVectorDecls, ExtVectorDecls);
4702
4703 // Build a record containing all of the VTable uses information.
4704 RecordData VTableUses;
4705 if (!SemaRef.VTableUses.empty()) {
4706 for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I) {
4707 AddDeclRef(SemaRef.VTableUses[I].first, VTableUses);
4708 AddSourceLocation(SemaRef.VTableUses[I].second, VTableUses);
4709 VTableUses.push_back(SemaRef.VTablesUsed[SemaRef.VTableUses[I].first]);
4710 }
4711 }
4712
4713 // Build a record containing all of the UnusedLocalTypedefNameCandidates.
4714 RecordData UnusedLocalTypedefNameCandidates;
4715 for (const TypedefNameDecl *TD : SemaRef.UnusedLocalTypedefNameCandidates)
4716 AddDeclRef(TD, UnusedLocalTypedefNameCandidates);
4717
4718 // Build a record containing all of pending implicit instantiations.
4719 RecordData PendingInstantiations;
4720 for (const auto &I : SemaRef.PendingInstantiations) {
4721 AddDeclRef(I.first, PendingInstantiations);
4722 AddSourceLocation(I.second, PendingInstantiations);
4723 }
4724 assert(SemaRef.PendingLocalImplicitInstantiations.empty() &&(static_cast <bool> (SemaRef.PendingLocalImplicitInstantiations
.empty() && "There are local ones at end of translation unit!"
) ? void (0) : __assert_fail ("SemaRef.PendingLocalImplicitInstantiations.empty() && \"There are local ones at end of translation unit!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4725, __extension__ __PRETTY_FUNCTION__))
4725 "There are local ones at end of translation unit!")(static_cast <bool> (SemaRef.PendingLocalImplicitInstantiations
.empty() && "There are local ones at end of translation unit!"
) ? void (0) : __assert_fail ("SemaRef.PendingLocalImplicitInstantiations.empty() && \"There are local ones at end of translation unit!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4725, __extension__ __PRETTY_FUNCTION__))
;
4726
4727 // Build a record containing some declaration references.
4728 RecordData SemaDeclRefs;
4729 if (SemaRef.StdNamespace || SemaRef.StdBadAlloc || SemaRef.StdAlignValT) {
4730 AddDeclRef(SemaRef.getStdNamespace(), SemaDeclRefs);
4731 AddDeclRef(SemaRef.getStdBadAlloc(), SemaDeclRefs);
4732 AddDeclRef(SemaRef.getStdAlignValT(), SemaDeclRefs);
4733 }
4734
4735 RecordData CUDASpecialDeclRefs;
4736 if (Context.getcudaConfigureCallDecl()) {
4737 AddDeclRef(Context.getcudaConfigureCallDecl(), CUDASpecialDeclRefs);
4738 }
4739
4740 // Build a record containing all of the known namespaces.
4741 RecordData KnownNamespaces;
4742 for (const auto &I : SemaRef.KnownNamespaces) {
4743 if (!I.second)
4744 AddDeclRef(I.first, KnownNamespaces);
4745 }
4746
4747 // Build a record of all used, undefined objects that require definitions.
4748 RecordData UndefinedButUsed;
4749
4750 SmallVector<std::pair<NamedDecl *, SourceLocation>, 16> Undefined;
4751 SemaRef.getUndefinedButUsed(Undefined);
4752 for (const auto &I : Undefined) {
4753 AddDeclRef(I.first, UndefinedButUsed);
4754 AddSourceLocation(I.second, UndefinedButUsed);
4755 }
4756
4757 // Build a record containing all delete-expressions that we would like to
4758 // analyze later in AST.
4759 RecordData DeleteExprsToAnalyze;
4760
4761 for (const auto &DeleteExprsInfo :
4762 SemaRef.getMismatchingDeleteExpressions()) {
4763 AddDeclRef(DeleteExprsInfo.first, DeleteExprsToAnalyze);
4764 DeleteExprsToAnalyze.push_back(DeleteExprsInfo.second.size());
4765 for (const auto &DeleteLoc : DeleteExprsInfo.second) {
4766 AddSourceLocation(DeleteLoc.first, DeleteExprsToAnalyze);
4767 DeleteExprsToAnalyze.push_back(DeleteLoc.second);
4768 }
4769 }
4770
4771 // Write the control block
4772 WriteControlBlock(PP, Context, isysroot, OutputFile);
4773
4774 // Write the remaining AST contents.
4775 Stream.EnterSubblock(AST_BLOCK_ID, 5);
4776
4777 // This is so that older clang versions, before the introduction
4778 // of the control block, can read and reject the newer PCH format.
4779 {
4780 RecordData Record = {VERSION_MAJOR};
4781 Stream.EmitRecord(METADATA_OLD_FORMAT, Record);
4782 }
4783
4784 // Create a lexical update block containing all of the declarations in the
4785 // translation unit that do not come from other AST files.
4786 const TranslationUnitDecl *TU = Context.getTranslationUnitDecl();
4787 SmallVector<uint32_t, 128> NewGlobalKindDeclPairs;
4788 for (const auto *D : TU->noload_decls()) {
4789 if (!D->isFromASTFile()) {
4790 NewGlobalKindDeclPairs.push_back(D->getKind());
4791 NewGlobalKindDeclPairs.push_back(GetDeclRef(D));
4792 }
4793 }
4794
4795 auto Abv = std::make_shared<BitCodeAbbrev>();
4796 Abv->Add(llvm::BitCodeAbbrevOp(TU_UPDATE_LEXICAL));
4797 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4798 unsigned TuUpdateLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv));
4799 {
4800 RecordData::value_type Record[] = {TU_UPDATE_LEXICAL};
4801 Stream.EmitRecordWithBlob(TuUpdateLexicalAbbrev, Record,
4802 bytes(NewGlobalKindDeclPairs));
4803 }
4804
4805 // And a visible updates block for the translation unit.
4806 Abv = std::make_shared<BitCodeAbbrev>();
4807 Abv->Add(llvm::BitCodeAbbrevOp(UPDATE_VISIBLE));
4808 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4809 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4810 UpdateVisibleAbbrev = Stream.EmitAbbrev(std::move(Abv));
4811 WriteDeclContextVisibleUpdate(TU);
4812
4813 // If we have any extern "C" names, write out a visible update for them.
4814 if (Context.ExternCContext)
4815 WriteDeclContextVisibleUpdate(Context.ExternCContext);
4816
4817 // If the translation unit has an anonymous namespace, and we don't already
4818 // have an update block for it, write it as an update block.
4819 // FIXME: Why do we not do this if there's already an update block?
4820 if (NamespaceDecl *NS = TU->getAnonymousNamespace()) {
4821 ASTWriter::UpdateRecord &Record = DeclUpdates[TU];
4822 if (Record.empty())
4823 Record.push_back(DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, NS));
4824 }
4825
4826 // Add update records for all mangling numbers and static local numbers.
4827 // These aren't really update records, but this is a convenient way of
4828 // tagging this rare extra data onto the declarations.
4829 for (const auto &Number : Context.MangleNumbers)
4830 if (!Number.first->isFromASTFile())
4831 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_MANGLING_NUMBER,
4832 Number.second));
4833 for (const auto &Number : Context.StaticLocalNumbers)
4834 if (!Number.first->isFromASTFile())
4835 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_STATIC_LOCAL_NUMBER,
4836 Number.second));
4837
4838 // Make sure visible decls, added to DeclContexts previously loaded from
4839 // an AST file, are registered for serialization. Likewise for template
4840 // specializations added to imported templates.
4841 for (const auto *I : DeclsToEmitEvenIfUnreferenced) {
4842 GetDeclRef(I);
4843 }
4844
4845 // Make sure all decls associated with an identifier are registered for
4846 // serialization, if we're storing decls with identifiers.
4847 if (!WritingModule || !getLangOpts().CPlusPlus) {
4848 llvm::SmallVector<const IdentifierInfo*, 256> IIs;
4849 for (const auto &ID : PP.getIdentifierTable()) {
4850 const IdentifierInfo *II = ID.second;
4851 if (!Chain || !II->isFromAST() || II->hasChangedSinceDeserialization())
4852 IIs.push_back(II);
4853 }
4854 // Sort the identifiers to visit based on their name.
4855 llvm::sort(IIs.begin(), IIs.end(), llvm::less_ptr<IdentifierInfo>());
4856 for (const IdentifierInfo *II : IIs) {
4857 for (IdentifierResolver::iterator D = SemaRef.IdResolver.begin(II),
4858 DEnd = SemaRef.IdResolver.end();
4859 D != DEnd; ++D) {
4860 GetDeclRef(*D);
4861 }
4862 }
4863 }
4864
4865 // For method pool in the module, if it contains an entry for a selector,
4866 // the entry should be complete, containing everything introduced by that
4867 // module and all modules it imports. It's possible that the entry is out of
4868 // date, so we need to pull in the new content here.
4869
4870 // It's possible that updateOutOfDateSelector can update SelectorIDs. To be
4871 // safe, we copy all selectors out.
4872 llvm::SmallVector<Selector, 256> AllSelectors;
4873 for (auto &SelectorAndID : SelectorIDs)
4874 AllSelectors.push_back(SelectorAndID.first);
4875 for (auto &Selector : AllSelectors)
4876 SemaRef.updateOutOfDateSelector(Selector);
4877
4878 // Form the record of special types.
4879 RecordData SpecialTypes;
4880 AddTypeRef(Context.getRawCFConstantStringType(), SpecialTypes);
4881 AddTypeRef(Context.getFILEType(), SpecialTypes);
4882 AddTypeRef(Context.getjmp_bufType(), SpecialTypes);
4883 AddTypeRef(Context.getsigjmp_bufType(), SpecialTypes);
4884 AddTypeRef(Context.ObjCIdRedefinitionType, SpecialTypes);
4885 AddTypeRef(Context.ObjCClassRedefinitionType, SpecialTypes);
4886 AddTypeRef(Context.ObjCSelRedefinitionType, SpecialTypes);
4887 AddTypeRef(Context.getucontext_tType(), SpecialTypes);
4888
4889 if (Chain) {
4890 // Write the mapping information describing our module dependencies and how
4891 // each of those modules were mapped into our own offset/ID space, so that
4892 // the reader can build the appropriate mapping to its own offset/ID space.
4893 // The map consists solely of a blob with the following format:
4894 // *(module-kind:i8
4895 // module-name-len:i16 module-name:len*i8
4896 // source-location-offset:i32
4897 // identifier-id:i32
4898 // preprocessed-entity-id:i32
4899 // macro-definition-id:i32
4900 // submodule-id:i32
4901 // selector-id:i32
4902 // declaration-id:i32
4903 // c++-base-specifiers-id:i32
4904 // type-id:i32)
4905 //
4906 // module-kind is the ModuleKind enum value. If it is MK_PrebuiltModule or
4907 // MK_ExplicitModule, then the module-name is the module name. Otherwise,
4908 // it is the module file name.
4909 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4910 Abbrev->Add(BitCodeAbbrevOp(MODULE_OFFSET_MAP));
4911 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4912 unsigned ModuleOffsetMapAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
4913 SmallString<2048> Buffer;
4914 {
4915 llvm::raw_svector_ostream Out(Buffer);
4916 for (ModuleFile &M : Chain->ModuleMgr) {
4917 using namespace llvm::support;
4918
4919 endian::Writer<little> LE(Out);
4920 LE.write<uint8_t>(static_cast<uint8_t>(M.Kind));
4921 StringRef Name =
4922 M.Kind == MK_PrebuiltModule || M.Kind == MK_ExplicitModule
4923 ? M.ModuleName
4924 : M.FileName;
4925 LE.write<uint16_t>(Name.size());
4926 Out.write(Name.data(), Name.size());
4927
4928 // Note: if a base ID was uint max, it would not be possible to load
4929 // another module after it or have more than one entity inside it.
4930 uint32_t None = std::numeric_limits<uint32_t>::max();
4931
4932 auto writeBaseIDOrNone = [&](uint32_t BaseID, bool ShouldWrite) {
4933 assert(BaseID < std::numeric_limits<uint32_t>::max() && "base id too high")(static_cast <bool> (BaseID < std::numeric_limits<
uint32_t>::max() && "base id too high") ? void (0)
: __assert_fail ("BaseID < std::numeric_limits<uint32_t>::max() && \"base id too high\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4933, __extension__ __PRETTY_FUNCTION__))
;
4934 if (ShouldWrite)
4935 LE.write<uint32_t>(BaseID);
4936 else
4937 LE.write<uint32_t>(None);
4938 };
4939
4940 // These values should be unique within a chain, since they will be read
4941 // as keys into ContinuousRangeMaps.
4942 writeBaseIDOrNone(M.SLocEntryBaseOffset, M.LocalNumSLocEntries);
4943 writeBaseIDOrNone(M.BaseIdentifierID, M.LocalNumIdentifiers);
4944 writeBaseIDOrNone(M.BaseMacroID, M.LocalNumMacros);
4945 writeBaseIDOrNone(M.BasePreprocessedEntityID,
4946 M.NumPreprocessedEntities);
4947 writeBaseIDOrNone(M.BaseSubmoduleID, M.LocalNumSubmodules);
4948 writeBaseIDOrNone(M.BaseSelectorID, M.LocalNumSelectors);
4949 writeBaseIDOrNone(M.BaseDeclID, M.LocalNumDecls);
4950 writeBaseIDOrNone(M.BaseTypeIndex, M.LocalNumTypes);
4951 }
4952 }
4953 RecordData::value_type Record[] = {MODULE_OFFSET_MAP};
4954 Stream.EmitRecordWithBlob(ModuleOffsetMapAbbrev, Record,
4955 Buffer.data(), Buffer.size());
4956 }
4957
4958 RecordData DeclUpdatesOffsetsRecord;
4959
4960 // Keep writing types, declarations, and declaration update records
4961 // until we've emitted all of them.
4962 Stream.EnterSubblock(DECLTYPES_BLOCK_ID, /*bits for abbreviations*/5);
4963 WriteTypeAbbrevs();
4964 WriteDeclAbbrevs();
4965 do {
4966 WriteDeclUpdatesBlocks(DeclUpdatesOffsetsRecord);
4967 while (!DeclTypesToEmit.empty()) {
4968 DeclOrType DOT = DeclTypesToEmit.front();
4969 DeclTypesToEmit.pop();
4970 if (DOT.isType())
4971 WriteType(DOT.getType());
4972 else
4973 WriteDecl(Context, DOT.getDecl());
4974 }
4975 } while (!DeclUpdates.empty());
4976 Stream.ExitBlock();
4977
4978 DoneWritingDeclsAndTypes = true;
4979
4980 // These things can only be done once we've written out decls and types.
4981 WriteTypeDeclOffsets();
4982 if (!DeclUpdatesOffsetsRecord.empty())
4983 Stream.EmitRecord(DECL_UPDATE_OFFSETS, DeclUpdatesOffsetsRecord);
4984 WriteFileDeclIDsMap();
4985 WriteSourceManagerBlock(Context.getSourceManager(), PP);
4986 WriteComments();
4987 WritePreprocessor(PP, isModule);
4988 WriteHeaderSearch(PP.getHeaderSearchInfo());
4989 WriteSelectors(SemaRef);
4990 WriteReferencedSelectorsPool(SemaRef);
4991 WriteLateParsedTemplates(SemaRef);
4992 WriteIdentifierTable(PP, SemaRef.IdResolver, isModule);
4993 WriteFPPragmaOptions(SemaRef.getFPOptions());
4994 WriteOpenCLExtensions(SemaRef);
4995 WriteOpenCLExtensionTypes(SemaRef);
4996 WriteOpenCLExtensionDecls(SemaRef);
4997 WriteCUDAPragmas(SemaRef);
4998
4999 // If we're emitting a module, write out the submodule information.
5000 if (WritingModule)
5001 WriteSubmodules(WritingModule);
5002
5003 Stream.EmitRecord(SPECIAL_TYPES, SpecialTypes);
5004
5005 // Write the record containing external, unnamed definitions.
5006 if (!EagerlyDeserializedDecls.empty())
5007 Stream.EmitRecord(EAGERLY_DESERIALIZED_DECLS, EagerlyDeserializedDecls);
5008
5009 if (!ModularCodegenDecls.empty())
5010 Stream.EmitRecord(MODULAR_CODEGEN_DECLS, ModularCodegenDecls);
5011
5012 // Write the record containing tentative definitions.
5013 if (!TentativeDefinitions.empty())
5014 Stream.EmitRecord(TENTATIVE_DEFINITIONS, TentativeDefinitions);
5015
5016 // Write the record containing unused file scoped decls.
5017 if (!UnusedFileScopedDecls.empty())
5018 Stream.EmitRecord(UNUSED_FILESCOPED_DECLS, UnusedFileScopedDecls);
5019
5020 // Write the record containing weak undeclared identifiers.
5021 if (!WeakUndeclaredIdentifiers.empty())
5022 Stream.EmitRecord(WEAK_UNDECLARED_IDENTIFIERS,
5023 WeakUndeclaredIdentifiers);
5024
5025 // Write the record containing ext_vector type names.
5026 if (!ExtVectorDecls.empty())
5027 Stream.EmitRecord(EXT_VECTOR_DECLS, ExtVectorDecls);
5028
5029 // Write the record containing VTable uses information.
5030 if (!VTableUses.empty())
5031 Stream.EmitRecord(VTABLE_USES, VTableUses);
5032
5033 // Write the record containing potentially unused local typedefs.
5034 if (!UnusedLocalTypedefNameCandidates.empty())
5035 Stream.EmitRecord(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES,
5036 UnusedLocalTypedefNameCandidates);
5037
5038 // Write the record containing pending implicit instantiations.
5039 if (!PendingInstantiations.empty())
5040 Stream.EmitRecord(PENDING_IMPLICIT_INSTANTIATIONS, PendingInstantiations);
5041
5042 // Write the record containing declaration references of Sema.
5043 if (!SemaDeclRefs.empty())
5044 Stream.EmitRecord(SEMA_DECL_REFS, SemaDeclRefs);
5045
5046 // Write the record containing CUDA-specific declaration references.
5047 if (!CUDASpecialDeclRefs.empty())
5048 Stream.EmitRecord(CUDA_SPECIAL_DECL_REFS, CUDASpecialDeclRefs);
5049
5050 // Write the delegating constructors.
5051 if (!DelegatingCtorDecls.empty())
5052 Stream.EmitRecord(DELEGATING_CTORS, DelegatingCtorDecls);
5053
5054 // Write the known namespaces.
5055 if (!KnownNamespaces.empty())
5056 Stream.EmitRecord(KNOWN_NAMESPACES, KnownNamespaces);
5057
5058 // Write the undefined internal functions and variables, and inline functions.
5059 if (!UndefinedButUsed.empty())
5060 Stream.EmitRecord(UNDEFINED_BUT_USED, UndefinedButUsed);
5061
5062 if (!DeleteExprsToAnalyze.empty())
5063 Stream.EmitRecord(DELETE_EXPRS_TO_ANALYZE, DeleteExprsToAnalyze);
5064
5065 // Write the visible updates to DeclContexts.
5066 for (auto *DC : UpdatedDeclContexts)
5067 WriteDeclContextVisibleUpdate(DC);
5068
5069 if (!WritingModule) {
5070 // Write the submodules that were imported, if any.
5071 struct ModuleInfo {
5072 uint64_t ID;
5073 Module *M;
5074 ModuleInfo(uint64_t ID, Module *M) : ID(ID), M(M) {}
5075 };
5076 llvm::SmallVector<ModuleInfo, 64> Imports;
5077 for (const auto *I : Context.local_imports()) {
5078 assert(SubmoduleIDs.find(I->getImportedModule()) != SubmoduleIDs.end())(static_cast <bool> (SubmoduleIDs.find(I->getImportedModule
()) != SubmoduleIDs.end()) ? void (0) : __assert_fail ("SubmoduleIDs.find(I->getImportedModule()) != SubmoduleIDs.end()"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5078, __extension__ __PRETTY_FUNCTION__))
;
5079 Imports.push_back(ModuleInfo(SubmoduleIDs[I->getImportedModule()],
5080 I->getImportedModule()));
5081 }
5082
5083 if (!Imports.empty()) {
5084 auto Cmp = [](const ModuleInfo &A, const ModuleInfo &B) {
5085 return A.ID < B.ID;
5086 };
5087 auto Eq = [](const ModuleInfo &A, const ModuleInfo &B) {
5088 return A.ID == B.ID;
5089 };
5090
5091 // Sort and deduplicate module IDs.
5092 llvm::sort(Imports.begin(), Imports.end(), Cmp);
5093 Imports.erase(std::unique(Imports.begin(), Imports.end(), Eq),
5094 Imports.end());
5095
5096 RecordData ImportedModules;
5097 for (const auto &Import : Imports) {
5098 ImportedModules.push_back(Import.ID);
5099 // FIXME: If the module has macros imported then later has declarations
5100 // imported, this location won't be the right one as a location for the
5101 // declaration imports.
5102 AddSourceLocation(PP.getModuleImportLoc(Import.M), ImportedModules);
5103 }
5104
5105 Stream.EmitRecord(IMPORTED_MODULES, ImportedModules);
5106 }
5107 }
5108
5109 WriteObjCCategories();
5110 if(!WritingModule) {
5111 WriteOptimizePragmaOptions(SemaRef);
5112 WriteMSStructPragmaOptions(SemaRef);
5113 WriteMSPointersToMembersPragmaOptions(SemaRef);
5114 }
5115 WritePackPragmaOptions(SemaRef);
5116
5117 // Some simple statistics
5118 RecordData::value_type Record[] = {
5119 NumStatements, NumMacros, NumLexicalDeclContexts, NumVisibleDeclContexts};
5120 Stream.EmitRecord(STATISTICS, Record);
5121 Stream.ExitBlock();
5122
5123 // Write the module file extension blocks.
5124 for (const auto &ExtWriter : ModuleFileExtensionWriters)
5125 WriteModuleFileExtension(SemaRef, *ExtWriter);
5126
5127 return writeUnhashedControlBlock(PP, Context);
5128}
5129
5130void ASTWriter::WriteDeclUpdatesBlocks(RecordDataImpl &OffsetsRecord) {
5131 if (DeclUpdates.empty())
5132 return;
5133
5134 DeclUpdateMap LocalUpdates;
5135 LocalUpdates.swap(DeclUpdates);
5136
5137 for (auto &DeclUpdate : LocalUpdates) {
5138 const Decl *D = DeclUpdate.first;
5139
5140 bool HasUpdatedBody = false;
5141 RecordData RecordData;
5142 ASTRecordWriter Record(*this, RecordData);
5143 for (auto &Update : DeclUpdate.second) {
5144 DeclUpdateKind Kind = (DeclUpdateKind)Update.getKind();
5145
5146 // An updated body is emitted last, so that the reader doesn't need
5147 // to skip over the lazy body to reach statements for other records.
5148 if (Kind == UPD_CXX_ADDED_FUNCTION_DEFINITION)
5149 HasUpdatedBody = true;
5150 else
5151 Record.push_back(Kind);
5152
5153 switch (Kind) {
5154 case UPD_CXX_ADDED_IMPLICIT_MEMBER:
5155 case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION:
5156 case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE:
5157 assert(Update.getDecl() && "no decl to add?")(static_cast <bool> (Update.getDecl() && "no decl to add?"
) ? void (0) : __assert_fail ("Update.getDecl() && \"no decl to add?\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5157, __extension__ __PRETTY_FUNCTION__))
;
5158 Record.push_back(GetDeclRef(Update.getDecl()));
5159 break;
5160
5161 case UPD_CXX_ADDED_FUNCTION_DEFINITION:
5162 break;
5163
5164 case UPD_CXX_POINT_OF_INSTANTIATION:
5165 // FIXME: Do we need to also save the template specialization kind here?
5166 Record.AddSourceLocation(Update.getLoc());
5167 break;
5168
5169 case UPD_CXX_ADDED_VAR_DEFINITION: {
5170 const VarDecl *VD = cast<VarDecl>(D);
5171 Record.push_back(VD->isInline());
5172 Record.push_back(VD->isInlineSpecified());
5173 if (VD->getInit()) {
5174 Record.push_back(!VD->isInitKnownICE() ? 1
5175 : (VD->isInitICE() ? 3 : 2));
5176 Record.AddStmt(const_cast<Expr*>(VD->getInit()));
5177 } else {
5178 Record.push_back(0);
5179 }
5180 break;
5181 }
5182
5183 case UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT:
5184 Record.AddStmt(const_cast<Expr *>(
5185 cast<ParmVarDecl>(Update.getDecl())->getDefaultArg()));
5186 break;
5187
5188 case UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER:
5189 Record.AddStmt(
5190 cast<FieldDecl>(Update.getDecl())->getInClassInitializer());
5191 break;
5192
5193 case UPD_CXX_INSTANTIATED_CLASS_DEFINITION: {
5194 auto *RD = cast<CXXRecordDecl>(D);
5195 UpdatedDeclContexts.insert(RD->getPrimaryContext());
5196 Record.push_back(RD->isParamDestroyedInCallee());
5197 Record.push_back(RD->getArgPassingRestrictions());
5198 Record.AddCXXDefinitionData(RD);
5199 Record.AddOffset(WriteDeclContextLexicalBlock(
5200 *Context, const_cast<CXXRecordDecl *>(RD)));
5201
5202 // This state is sometimes updated by template instantiation, when we
5203 // switch from the specialization referring to the template declaration
5204 // to it referring to the template definition.
5205 if (auto *MSInfo = RD->getMemberSpecializationInfo()) {
5206 Record.push_back(MSInfo->getTemplateSpecializationKind());
5207 Record.AddSourceLocation(MSInfo->getPointOfInstantiation());
5208 } else {
5209 auto *Spec = cast<ClassTemplateSpecializationDecl>(RD);
5210 Record.push_back(Spec->getTemplateSpecializationKind());
5211 Record.AddSourceLocation(Spec->getPointOfInstantiation());
5212
5213 // The instantiation might have been resolved to a partial
5214 // specialization. If so, record which one.
5215 auto From = Spec->getInstantiatedFrom();
5216 if (auto PartialSpec =
5217 From.dyn_cast<ClassTemplatePartialSpecializationDecl*>()) {
5218 Record.push_back(true);
5219 Record.AddDeclRef(PartialSpec);
5220 Record.AddTemplateArgumentList(
5221 &Spec->getTemplateInstantiationArgs());
5222 } else {
5223 Record.push_back(false);
5224 }
5225 }
5226 Record.push_back(RD->getTagKind());
5227 Record.AddSourceLocation(RD->getLocation());
5228 Record.AddSourceLocation(RD->getLocStart());
5229 Record.AddSourceRange(RD->getBraceRange());
5230
5231 // Instantiation may change attributes; write them all out afresh.
5232 Record.push_back(D->hasAttrs());
5233 if (D->hasAttrs())
5234 Record.AddAttributes(D->getAttrs());
5235
5236 // FIXME: Ensure we don't get here for explicit instantiations.
5237 break;
5238 }
5239
5240 case UPD_CXX_RESOLVED_DTOR_DELETE:
5241 Record.AddDeclRef(Update.getDecl());
5242 Record.AddStmt(cast<CXXDestructorDecl>(D)->getOperatorDeleteThisArg());
5243 break;
5244
5245 case UPD_CXX_RESOLVED_EXCEPTION_SPEC:
5246 addExceptionSpec(
5247 cast<FunctionDecl>(D)->getType()->castAs<FunctionProtoType>(),
5248 Record);
5249 break;
5250
5251 case UPD_CXX_DEDUCED_RETURN_TYPE:
5252 Record.push_back(GetOrCreateTypeID(Update.getType()));
5253 break;
5254
5255 case UPD_DECL_MARKED_USED:
5256 break;
5257
5258 case UPD_MANGLING_NUMBER:
5259 case UPD_STATIC_LOCAL_NUMBER:
5260 Record.push_back(Update.getNumber());
5261 break;
5262
5263 case UPD_DECL_MARKED_OPENMP_THREADPRIVATE:
5264 Record.AddSourceRange(
5265 D->getAttr<OMPThreadPrivateDeclAttr>()->getRange());
5266 break;
5267
5268 case UPD_DECL_MARKED_OPENMP_DECLARETARGET:
5269 Record.AddSourceRange(
5270 D->getAttr<OMPDeclareTargetDeclAttr>()->getRange());
5271 break;
5272
5273 case UPD_DECL_EXPORTED:
5274 Record.push_back(getSubmoduleID(Update.getModule()));
5275 break;
5276
5277 case UPD_ADDED_ATTR_TO_RECORD:
5278 Record.AddAttributes(llvm::makeArrayRef(Update.getAttr()));
5279 break;
5280 }
5281 }
5282
5283 if (HasUpdatedBody) {
5284 const auto *Def = cast<FunctionDecl>(D);
5285 Record.push_back(UPD_CXX_ADDED_FUNCTION_DEFINITION);
5286 Record.push_back(Def->isInlined());
5287 Record.AddSourceLocation(Def->getInnerLocStart());
5288 Record.AddFunctionDefinition(Def);
5289 }
5290
5291 OffsetsRecord.push_back(GetDeclRef(D));
5292 OffsetsRecord.push_back(Record.Emit(DECL_UPDATES));
5293 }
5294}
5295
5296void ASTWriter::AddSourceLocation(SourceLocation Loc, RecordDataImpl &Record) {
5297 uint32_t Raw = Loc.getRawEncoding();
5298 Record.push_back((Raw << 1) | (Raw >> 31));
5299}
5300
5301void ASTWriter::AddSourceRange(SourceRange Range, RecordDataImpl &Record) {
5302 AddSourceLocation(Range.getBegin(), Record);
5303 AddSourceLocation(Range.getEnd(), Record);
5304}
5305
5306void ASTRecordWriter::AddAPInt(const llvm::APInt &Value) {
5307 Record->push_back(Value.getBitWidth());
5308 const uint64_t *Words = Value.getRawData();
5309 Record->append(Words, Words + Value.getNumWords());
5310}
5311
5312void ASTRecordWriter::AddAPSInt(const llvm::APSInt &Value) {
5313 Record->push_back(Value.isUnsigned());
5314 AddAPInt(Value);
5315}
5316
5317void ASTRecordWriter::AddAPFloat(const llvm::APFloat &Value) {
5318 AddAPInt(Value.bitcastToAPInt());
5319}
5320
5321void ASTWriter::AddIdentifierRef(const IdentifierInfo *II, RecordDataImpl &Record) {
5322 Record.push_back(getIdentifierRef(II));
5323}
5324
5325IdentID ASTWriter::getIdentifierRef(const IdentifierInfo *II) {
5326 if (!II)
5327 return 0;
5328
5329 IdentID &ID = IdentifierIDs[II];
5330 if (ID == 0)
5331 ID = NextIdentID++;
5332 return ID;
5333}
5334
5335MacroID ASTWriter::getMacroRef(MacroInfo *MI, const IdentifierInfo *Name) {
5336 // Don't emit builtin macros like __LINE__ to the AST file unless they
5337 // have been redefined by the header (in which case they are not
5338 // isBuiltinMacro).
5339 if (!MI || MI->isBuiltinMacro())
5340 return 0;
5341
5342 MacroID &ID = MacroIDs[MI];
5343 if (ID == 0) {
5344 ID = NextMacroID++;
5345 MacroInfoToEmitData Info = { Name, MI, ID };
5346 MacroInfosToEmit.push_back(Info);
5347 }
5348 return ID;
5349}
5350
5351MacroID ASTWriter::getMacroID(MacroInfo *MI) {
5352 if (!MI || MI->isBuiltinMacro())
5353 return 0;
5354
5355 assert(MacroIDs.find(MI) != MacroIDs.end() && "Macro not emitted!")(static_cast <bool> (MacroIDs.find(MI) != MacroIDs.end(
) && "Macro not emitted!") ? void (0) : __assert_fail
("MacroIDs.find(MI) != MacroIDs.end() && \"Macro not emitted!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5355, __extension__ __PRETTY_FUNCTION__))
;
5356 return MacroIDs[MI];
5357}
5358
5359uint64_t ASTWriter::getMacroDirectivesOffset(const IdentifierInfo *Name) {
5360 return IdentMacroDirectivesOffsetMap.lookup(Name);
5361}
5362
5363void ASTRecordWriter::AddSelectorRef(const Selector SelRef) {
5364 Record->push_back(Writer->getSelectorRef(SelRef));
5365}
5366
5367SelectorID ASTWriter::getSelectorRef(Selector Sel) {
5368 if (Sel.getAsOpaquePtr() == nullptr) {
5369 return 0;
5370 }
5371
5372 SelectorID SID = SelectorIDs[Sel];
5373 if (SID == 0 && Chain) {
5374 // This might trigger a ReadSelector callback, which will set the ID for
5375 // this selector.
5376 Chain->LoadSelector(Sel);
5377 SID = SelectorIDs[Sel];
5378 }
5379 if (SID == 0) {
5380 SID = NextSelectorID++;
5381 SelectorIDs[Sel] = SID;
5382 }
5383 return SID;
5384}
5385
5386void ASTRecordWriter::AddCXXTemporary(const CXXTemporary *Temp) {
5387 AddDeclRef(Temp->getDestructor());
5388}
5389
5390void ASTRecordWriter::AddTemplateArgumentLocInfo(
5391 TemplateArgument::ArgKind Kind, const TemplateArgumentLocInfo &Arg) {
5392 switch (Kind) {
5393 case TemplateArgument::Expression:
5394 AddStmt(Arg.getAsExpr());
5395 break;
5396 case TemplateArgument::Type:
5397 AddTypeSourceInfo(Arg.getAsTypeSourceInfo());
5398 break;
5399 case TemplateArgument::Template:
5400 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5401 AddSourceLocation(Arg.getTemplateNameLoc());
5402 break;
5403 case TemplateArgument::TemplateExpansion:
5404 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5405 AddSourceLocation(Arg.getTemplateNameLoc());
5406 AddSourceLocation(Arg.getTemplateEllipsisLoc());
5407 break;
5408 case TemplateArgument::Null:
5409 case TemplateArgument::Integral:
5410 case TemplateArgument::Declaration:
5411 case TemplateArgument::NullPtr:
5412 case TemplateArgument::Pack:
5413 // FIXME: Is this right?
5414 break;
5415 }
5416}
5417
5418void ASTRecordWriter::AddTemplateArgumentLoc(const TemplateArgumentLoc &Arg) {
5419 AddTemplateArgument(Arg.getArgument());
5420
5421 if (Arg.getArgument().getKind() == TemplateArgument::Expression) {
5422 bool InfoHasSameExpr
5423 = Arg.getArgument().getAsExpr() == Arg.getLocInfo().getAsExpr();
5424 Record->push_back(InfoHasSameExpr);
5425 if (InfoHasSameExpr)
5426 return; // Avoid storing the same expr twice.
5427 }
5428 AddTemplateArgumentLocInfo(Arg.getArgument().getKind(), Arg.getLocInfo());
5429}
5430
5431void ASTRecordWriter::AddTypeSourceInfo(TypeSourceInfo *TInfo) {
5432 if (!TInfo) {
5433 AddTypeRef(QualType());
5434 return;
5435 }
5436
5437 AddTypeLoc(TInfo->getTypeLoc());
5438}
5439
5440void ASTRecordWriter::AddTypeLoc(TypeLoc TL) {
5441 AddTypeRef(TL.getType());
5442
5443 TypeLocWriter TLW(*this);
5444 for (; !TL.isNull(); TL = TL.getNextTypeLoc())
5445 TLW.Visit(TL);
5446}
5447
5448void ASTWriter::AddTypeRef(QualType T, RecordDataImpl &Record) {
5449 Record.push_back(GetOrCreateTypeID(T));
5450}
5451
5452TypeID ASTWriter::GetOrCreateTypeID(QualType T) {
5453 assert(Context)(static_cast <bool> (Context) ? void (0) : __assert_fail
("Context", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5453, __extension__ __PRETTY_FUNCTION__))
;
5454 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5455 if (T.isNull())
5456 return TypeIdx();
5457 assert(!T.getLocalFastQualifiers())(static_cast <bool> (!T.getLocalFastQualifiers()) ? void
(0) : __assert_fail ("!T.getLocalFastQualifiers()", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5457, __extension__ __PRETTY_FUNCTION__))
;
5458
5459 TypeIdx &Idx = TypeIdxs[T];
5460 if (Idx.getIndex() == 0) {
5461 if (DoneWritingDeclsAndTypes) {
5462 assert(0 && "New type seen after serializing all the types to emit!")(static_cast <bool> (0 && "New type seen after serializing all the types to emit!"
) ? void (0) : __assert_fail ("0 && \"New type seen after serializing all the types to emit!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5462, __extension__ __PRETTY_FUNCTION__))
;
5463 return TypeIdx();
5464 }
5465
5466 // We haven't seen this type before. Assign it a new ID and put it
5467 // into the queue of types to emit.
5468 Idx = TypeIdx(NextTypeID++);
5469 DeclTypesToEmit.push(T);
5470 }
5471 return Idx;
5472 });
5473}
5474
5475TypeID ASTWriter::getTypeID(QualType T) const {
5476 assert(Context)(static_cast <bool> (Context) ? void (0) : __assert_fail
("Context", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5476, __extension__ __PRETTY_FUNCTION__))
;
5477 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5478 if (T.isNull())
5479 return TypeIdx();
5480 assert(!T.getLocalFastQualifiers())(static_cast <bool> (!T.getLocalFastQualifiers()) ? void
(0) : __assert_fail ("!T.getLocalFastQualifiers()", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5480, __extension__ __PRETTY_FUNCTION__))
;
5481
5482 TypeIdxMap::const_iterator I = TypeIdxs.find(T);
5483 assert(I != TypeIdxs.end() && "Type not emitted!")(static_cast <bool> (I != TypeIdxs.end() && "Type not emitted!"
) ? void (0) : __assert_fail ("I != TypeIdxs.end() && \"Type not emitted!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5483, __extension__ __PRETTY_FUNCTION__))
;
5484 return I->second;
5485 });
5486}
5487
5488void ASTWriter::AddDeclRef(const Decl *D, RecordDataImpl &Record) {
5489 Record.push_back(GetDeclRef(D));
5490}
5491
5492DeclID ASTWriter::GetDeclRef(const Decl *D) {
5493 assert(WritingAST && "Cannot request a declaration ID before AST writing")(static_cast <bool> (WritingAST && "Cannot request a declaration ID before AST writing"
) ? void (0) : __assert_fail ("WritingAST && \"Cannot request a declaration ID before AST writing\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5493, __extension__ __PRETTY_FUNCTION__))
;
5494
5495 if (!D) {
5496 return 0;
5497 }
5498
5499 // If D comes from an AST file, its declaration ID is already known and
5500 // fixed.
5501 if (D->isFromASTFile())
5502 return D->getGlobalID();
5503
5504 assert(!(reinterpret_cast<uintptr_t>(D) & 0x01) && "Invalid decl pointer")(static_cast <bool> (!(reinterpret_cast<uintptr_t>
(D) & 0x01) && "Invalid decl pointer") ? void (0)
: __assert_fail ("!(reinterpret_cast<uintptr_t>(D) & 0x01) && \"Invalid decl pointer\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5504, __extension__ __PRETTY_FUNCTION__))
;
5505 DeclID &ID = DeclIDs[D];
5506 if (ID == 0) {
5507 if (DoneWritingDeclsAndTypes) {
5508 assert(0 && "New decl seen after serializing all the decls to emit!")(static_cast <bool> (0 && "New decl seen after serializing all the decls to emit!"
) ? void (0) : __assert_fail ("0 && \"New decl seen after serializing all the decls to emit!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5508, __extension__ __PRETTY_FUNCTION__))
;
5509 return 0;
5510 }
5511
5512 // We haven't seen this declaration before. Give it a new ID and
5513 // enqueue it in the list of declarations to emit.
5514 ID = NextDeclID++;
5515 DeclTypesToEmit.push(const_cast<Decl *>(D));
5516 }
5517
5518 return ID;
5519}
5520
5521DeclID ASTWriter::getDeclID(const Decl *D) {
5522 if (!D)
5523 return 0;
5524
5525 // If D comes from an AST file, its declaration ID is already known and
5526 // fixed.
5527 if (D->isFromASTFile())
5528 return D->getGlobalID();
5529
5530 assert(DeclIDs.find(D) != DeclIDs.end() && "Declaration not emitted!")(static_cast <bool> (DeclIDs.find(D) != DeclIDs.end() &&
"Declaration not emitted!") ? void (0) : __assert_fail ("DeclIDs.find(D) != DeclIDs.end() && \"Declaration not emitted!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5530, __extension__ __PRETTY_FUNCTION__))
;
5531 return DeclIDs[D];
5532}
5533
5534void ASTWriter::associateDeclWithFile(const Decl *D, DeclID ID) {
5535 assert(ID)(static_cast <bool> (ID) ? void (0) : __assert_fail ("ID"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5535, __extension__ __PRETTY_FUNCTION__))
;
5536 assert(D)(static_cast <bool> (D) ? void (0) : __assert_fail ("D"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5536, __extension__ __PRETTY_FUNCTION__))
;
5537
5538 SourceLocation Loc = D->getLocation();
5539 if (Loc.isInvalid())
5540 return;
5541
5542 // We only keep track of the file-level declarations of each file.
5543 if (!D->getLexicalDeclContext()->isFileContext())
5544 return;
5545 // FIXME: ParmVarDecls that are part of a function type of a parameter of
5546 // a function/objc method, should not have TU as lexical context.
5547 // TemplateTemplateParmDecls that are part of an alias template, should not
5548 // have TU as lexical context.
5549 if (isa<ParmVarDecl>(D) || isa<TemplateTemplateParmDecl>(D))
5550 return;
5551
5552 SourceManager &SM = Context->getSourceManager();
5553 SourceLocation FileLoc = SM.getFileLoc(Loc);
5554 assert(SM.isLocalSourceLocation(FileLoc))(static_cast <bool> (SM.isLocalSourceLocation(FileLoc))
? void (0) : __assert_fail ("SM.isLocalSourceLocation(FileLoc)"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5554, __extension__ __PRETTY_FUNCTION__))
;
5555 FileID FID;
5556 unsigned Offset;
5557 std::tie(FID, Offset) = SM.getDecomposedLoc(FileLoc);
5558 if (FID.isInvalid())
5559 return;
5560 assert(SM.getSLocEntry(FID).isFile())(static_cast <bool> (SM.getSLocEntry(FID).isFile()) ? void
(0) : __assert_fail ("SM.getSLocEntry(FID).isFile()", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5560, __extension__ __PRETTY_FUNCTION__))
;
5561
5562 DeclIDInFileInfo *&Info = FileDeclIDs[FID];
5563 if (!Info)
5564 Info = new DeclIDInFileInfo();
5565
5566 std::pair<unsigned, serialization::DeclID> LocDecl(Offset, ID);
5567 LocDeclIDsTy &Decls = Info->DeclIDs;
5568
5569 if (Decls.empty() || Decls.back().first <= Offset) {
5570 Decls.push_back(LocDecl);
5571 return;
5572 }
5573
5574 LocDeclIDsTy::iterator I =
5575 std::upper_bound(Decls.begin(), Decls.end(), LocDecl, llvm::less_first());
5576
5577 Decls.insert(I, LocDecl);
5578}
5579
5580void ASTRecordWriter::AddDeclarationName(DeclarationName Name) {
5581 // FIXME: Emit a stable enum for NameKind. 0 = Identifier etc.
5582 Record->push_back(Name.getNameKind());
5583 switch (Name.getNameKind()) {
5584 case DeclarationName::Identifier:
5585 AddIdentifierRef(Name.getAsIdentifierInfo());
5586 break;
5587
5588 case DeclarationName::ObjCZeroArgSelector:
5589 case DeclarationName::ObjCOneArgSelector:
5590 case DeclarationName::ObjCMultiArgSelector:
5591 AddSelectorRef(Name.getObjCSelector());
5592 break;
5593
5594 case DeclarationName::CXXConstructorName:
5595 case DeclarationName::CXXDestructorName:
5596 case DeclarationName::CXXConversionFunctionName:
5597 AddTypeRef(Name.getCXXNameType());
5598 break;
5599
5600 case DeclarationName::CXXDeductionGuideName:
5601 AddDeclRef(Name.getCXXDeductionGuideTemplate());
5602 break;
5603
5604 case DeclarationName::CXXOperatorName:
5605 Record->push_back(Name.getCXXOverloadedOperator());
5606 break;
5607
5608 case DeclarationName::CXXLiteralOperatorName:
5609 AddIdentifierRef(Name.getCXXLiteralIdentifier());
5610 break;
5611
5612 case DeclarationName::CXXUsingDirective:
5613 // No extra data to emit
5614 break;
5615 }
5616}
5617
5618unsigned ASTWriter::getAnonymousDeclarationNumber(const NamedDecl *D) {
5619 assert(needsAnonymousDeclarationNumber(D) &&(static_cast <bool> (needsAnonymousDeclarationNumber(D)
&& "expected an anonymous declaration") ? void (0) :
__assert_fail ("needsAnonymousDeclarationNumber(D) && \"expected an anonymous declaration\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5620, __extension__ __PRETTY_FUNCTION__))
5620 "expected an anonymous declaration")(static_cast <bool> (needsAnonymousDeclarationNumber(D)
&& "expected an anonymous declaration") ? void (0) :
__assert_fail ("needsAnonymousDeclarationNumber(D) && \"expected an anonymous declaration\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5620, __extension__ __PRETTY_FUNCTION__))
;
5621
5622 // Number the anonymous declarations within this context, if we've not
5623 // already done so.
5624 auto It = AnonymousDeclarationNumbers.find(D);
5625 if (It == AnonymousDeclarationNumbers.end()) {
5626 auto *DC = D->getLexicalDeclContext();
5627 numberAnonymousDeclsWithin(DC, [&](const NamedDecl *ND, unsigned Number) {
5628 AnonymousDeclarationNumbers[ND] = Number;
5629 });
5630
5631 It = AnonymousDeclarationNumbers.find(D);
5632 assert(It != AnonymousDeclarationNumbers.end() &&(static_cast <bool> (It != AnonymousDeclarationNumbers.
end() && "declaration not found within its lexical context"
) ? void (0) : __assert_fail ("It != AnonymousDeclarationNumbers.end() && \"declaration not found within its lexical context\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5633, __extension__ __PRETTY_FUNCTION__))
5633 "declaration not found within its lexical context")(static_cast <bool> (It != AnonymousDeclarationNumbers.
end() && "declaration not found within its lexical context"
) ? void (0) : __assert_fail ("It != AnonymousDeclarationNumbers.end() && \"declaration not found within its lexical context\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5633, __extension__ __PRETTY_FUNCTION__))
;
5634 }
5635
5636 return It->second;
5637}
5638
5639void ASTRecordWriter::AddDeclarationNameLoc(const DeclarationNameLoc &DNLoc,
5640 DeclarationName Name) {
5641 switch (Name.getNameKind()) {
5642 case DeclarationName::CXXConstructorName:
5643 case DeclarationName::CXXDestructorName:
5644 case DeclarationName::CXXConversionFunctionName:
5645 AddTypeSourceInfo(DNLoc.NamedType.TInfo);
5646 break;
5647
5648 case DeclarationName::CXXOperatorName:
5649 AddSourceLocation(SourceLocation::getFromRawEncoding(
5650 DNLoc.CXXOperatorName.BeginOpNameLoc));
5651 AddSourceLocation(
5652 SourceLocation::getFromRawEncoding(DNLoc.CXXOperatorName.EndOpNameLoc));
5653 break;
5654
5655 case DeclarationName::CXXLiteralOperatorName:
5656 AddSourceLocation(SourceLocation::getFromRawEncoding(
5657 DNLoc.CXXLiteralOperatorName.OpNameLoc));
5658 break;
5659
5660 case DeclarationName::Identifier:
5661 case DeclarationName::ObjCZeroArgSelector:
5662 case DeclarationName::ObjCOneArgSelector:
5663 case DeclarationName::ObjCMultiArgSelector:
5664 case DeclarationName::CXXUsingDirective:
5665 case DeclarationName::CXXDeductionGuideName:
5666 break;
5667 }
5668}
5669
5670void ASTRecordWriter::AddDeclarationNameInfo(
5671 const DeclarationNameInfo &NameInfo) {
5672 AddDeclarationName(NameInfo.getName());
5673 AddSourceLocation(NameInfo.getLoc());
5674 AddDeclarationNameLoc(NameInfo.getInfo(), NameInfo.getName());
5675}
5676
5677void ASTRecordWriter::AddQualifierInfo(const QualifierInfo &Info) {
5678 AddNestedNameSpecifierLoc(Info.QualifierLoc);
5679 Record->push_back(Info.NumTemplParamLists);
5680 for (unsigned i = 0, e = Info.NumTemplParamLists; i != e; ++i)
5681 AddTemplateParameterList(Info.TemplParamLists[i]);
5682}
5683
5684void ASTRecordWriter::AddNestedNameSpecifier(NestedNameSpecifier *NNS) {
5685 // Nested name specifiers usually aren't too long. I think that 8 would
5686 // typically accommodate the vast majority.
5687 SmallVector<NestedNameSpecifier *, 8> NestedNames;
5688
5689 // Push each of the NNS's onto a stack for serialization in reverse order.
5690 while (NNS) {
5691 NestedNames.push_back(NNS);
5692 NNS = NNS->getPrefix();
5693 }
5694
5695 Record->push_back(NestedNames.size());
5696 while(!NestedNames.empty()) {
5697 NNS = NestedNames.pop_back_val();
5698 NestedNameSpecifier::SpecifierKind Kind = NNS->getKind();
5699 Record->push_back(Kind);
5700 switch (Kind) {
5701 case NestedNameSpecifier::Identifier:
5702 AddIdentifierRef(NNS->getAsIdentifier());
5703 break;
5704
5705 case NestedNameSpecifier::Namespace:
5706 AddDeclRef(NNS->getAsNamespace());
5707 break;
5708
5709 case NestedNameSpecifier::NamespaceAlias:
5710 AddDeclRef(NNS->getAsNamespaceAlias());
5711 break;
5712
5713 case NestedNameSpecifier::TypeSpec:
5714 case NestedNameSpecifier::TypeSpecWithTemplate:
5715 AddTypeRef(QualType(NNS->getAsType(), 0));
5716 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5717 break;
5718
5719 case NestedNameSpecifier::Global:
5720 // Don't need to write an associated value.
5721 break;
5722
5723 case NestedNameSpecifier::Super:
5724 AddDeclRef(NNS->getAsRecordDecl());
5725 break;
5726 }
5727 }
5728}
5729
5730void ASTRecordWriter::AddNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS) {
5731 // Nested name specifiers usually aren't too long. I think that 8 would
5732 // typically accommodate the vast majority.
5733 SmallVector<NestedNameSpecifierLoc , 8> NestedNames;
5734
5735 // Push each of the nested-name-specifiers's onto a stack for
5736 // serialization in reverse order.
5737 while (NNS) {
5738 NestedNames.push_back(NNS);
5739 NNS = NNS.getPrefix();
5740 }
5741
5742 Record->push_back(NestedNames.size());
5743 while(!NestedNames.empty()) {
5744 NNS = NestedNames.pop_back_val();
5745 NestedNameSpecifier::SpecifierKind Kind
5746 = NNS.getNestedNameSpecifier()->getKind();
5747 Record->push_back(Kind);
5748 switch (Kind) {
5749 case NestedNameSpecifier::Identifier:
5750 AddIdentifierRef(NNS.getNestedNameSpecifier()->getAsIdentifier());
5751 AddSourceRange(NNS.getLocalSourceRange());
5752 break;
5753
5754 case NestedNameSpecifier::Namespace:
5755 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespace());
5756 AddSourceRange(NNS.getLocalSourceRange());
5757 break;
5758
5759 case NestedNameSpecifier::NamespaceAlias:
5760 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespaceAlias());
5761 AddSourceRange(NNS.getLocalSourceRange());
5762 break;
5763
5764 case NestedNameSpecifier::TypeSpec:
5765 case NestedNameSpecifier::TypeSpecWithTemplate:
5766 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5767 AddTypeLoc(NNS.getTypeLoc());
5768 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5769 break;
5770
5771 case NestedNameSpecifier::Global:
5772 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5773 break;
5774
5775 case NestedNameSpecifier::Super:
5776 AddDeclRef(NNS.getNestedNameSpecifier()->getAsRecordDecl());
5777 AddSourceRange(NNS.getLocalSourceRange());
5778 break;
5779 }
5780 }
5781}
5782
5783void ASTRecordWriter::AddTemplateName(TemplateName Name) {
5784 TemplateName::NameKind Kind = Name.getKind();
5785 Record->push_back(Kind);
5786 switch (Kind) {
5787 case TemplateName::Template:
5788 AddDeclRef(Name.getAsTemplateDecl());
5789 break;
5790
5791 case TemplateName::OverloadedTemplate: {
5792 OverloadedTemplateStorage *OvT = Name.getAsOverloadedTemplate();
5793 Record->push_back(OvT->size());
5794 for (const auto &I : *OvT)
5795 AddDeclRef(I);
5796 break;
5797 }
5798
5799 case TemplateName::QualifiedTemplate: {
5800 QualifiedTemplateName *QualT = Name.getAsQualifiedTemplateName();
5801 AddNestedNameSpecifier(QualT->getQualifier());
5802 Record->push_back(QualT->hasTemplateKeyword());
5803 AddDeclRef(QualT->getTemplateDecl());
5804 break;
5805 }
5806
5807 case TemplateName::DependentTemplate: {
5808 DependentTemplateName *DepT = Name.getAsDependentTemplateName();
5809 AddNestedNameSpecifier(DepT->getQualifier());
5810 Record->push_back(DepT->isIdentifier());
5811 if (DepT->isIdentifier())
5812 AddIdentifierRef(DepT->getIdentifier());
5813 else
5814 Record->push_back(DepT->getOperator());
5815 break;
5816 }
5817
5818 case TemplateName::SubstTemplateTemplateParm: {
5819 SubstTemplateTemplateParmStorage *subst
5820 = Name.getAsSubstTemplateTemplateParm();
5821 AddDeclRef(subst->getParameter());
5822 AddTemplateName(subst->getReplacement());
5823 break;
5824 }
5825
5826 case TemplateName::SubstTemplateTemplateParmPack: {
5827 SubstTemplateTemplateParmPackStorage *SubstPack
5828 = Name.getAsSubstTemplateTemplateParmPack();
5829 AddDeclRef(SubstPack->getParameterPack());
5830 AddTemplateArgument(SubstPack->getArgumentPack());
5831 break;
5832 }
5833 }
5834}
5835
5836void ASTRecordWriter::AddTemplateArgument(const TemplateArgument &Arg) {
5837 Record->push_back(Arg.getKind());
5838 switch (Arg.getKind()) {
5839 case TemplateArgument::Null:
5840 break;
5841 case TemplateArgument::Type:
5842 AddTypeRef(Arg.getAsType());
5843 break;
5844 case TemplateArgument::Declaration:
5845 AddDeclRef(Arg.getAsDecl());
5846 AddTypeRef(Arg.getParamTypeForDecl());
5847 break;
5848 case TemplateArgument::NullPtr:
5849 AddTypeRef(Arg.getNullPtrType());
5850 break;
5851 case TemplateArgument::Integral:
5852 AddAPSInt(Arg.getAsIntegral());
5853 AddTypeRef(Arg.getIntegralType());
5854 break;
5855 case TemplateArgument::Template:
5856 AddTemplateName(Arg.getAsTemplateOrTemplatePattern());
5857 break;
5858 case TemplateArgument::TemplateExpansion:
5859 AddTemplateName(Arg.getAsTemplateOrTemplatePattern());
5860 if (Optional<unsigned> NumExpansions = Arg.getNumTemplateExpansions())
5861 Record->push_back(*NumExpansions + 1);
5862 else
5863 Record->push_back(0);
5864 break;
5865 case TemplateArgument::Expression:
5866 AddStmt(Arg.getAsExpr());
5867 break;
5868 case TemplateArgument::Pack:
5869 Record->push_back(Arg.pack_size());
5870 for (const auto &P : Arg.pack_elements())
5871 AddTemplateArgument(P);
5872 break;
5873 }
5874}
5875
5876void ASTRecordWriter::AddTemplateParameterList(
5877 const TemplateParameterList *TemplateParams) {
5878 assert(TemplateParams && "No TemplateParams!")(static_cast <bool> (TemplateParams && "No TemplateParams!"
) ? void (0) : __assert_fail ("TemplateParams && \"No TemplateParams!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5878, __extension__ __PRETTY_FUNCTION__))
;
5879 AddSourceLocation(TemplateParams->getTemplateLoc());
5880 AddSourceLocation(TemplateParams->getLAngleLoc());
5881 AddSourceLocation(TemplateParams->getRAngleLoc());
5882 // TODO: Concepts
5883 Record->push_back(TemplateParams->size());
5884 for (const auto &P : *TemplateParams)
5885 AddDeclRef(P);
5886}
5887
5888/// \brief Emit a template argument list.
5889void ASTRecordWriter::AddTemplateArgumentList(
5890 const TemplateArgumentList *TemplateArgs) {
5891 assert(TemplateArgs && "No TemplateArgs!")(static_cast <bool> (TemplateArgs && "No TemplateArgs!"
) ? void (0) : __assert_fail ("TemplateArgs && \"No TemplateArgs!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5891, __extension__ __PRETTY_FUNCTION__))
;
5892 Record->push_back(TemplateArgs->size());
5893 for (int i = 0, e = TemplateArgs->size(); i != e; ++i)
5894 AddTemplateArgument(TemplateArgs->get(i));
5895}
5896
5897void ASTRecordWriter::AddASTTemplateArgumentListInfo(
5898 const ASTTemplateArgumentListInfo *ASTTemplArgList) {
5899 assert(ASTTemplArgList && "No ASTTemplArgList!")(static_cast <bool> (ASTTemplArgList && "No ASTTemplArgList!"
) ? void (0) : __assert_fail ("ASTTemplArgList && \"No ASTTemplArgList!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5899, __extension__ __PRETTY_FUNCTION__))
;
5900 AddSourceLocation(ASTTemplArgList->LAngleLoc);
5901 AddSourceLocation(ASTTemplArgList->RAngleLoc);
5902 Record->push_back(ASTTemplArgList->NumTemplateArgs);
5903 const TemplateArgumentLoc *TemplArgs = ASTTemplArgList->getTemplateArgs();
5904 for (int i = 0, e = ASTTemplArgList->NumTemplateArgs; i != e; ++i)
5905 AddTemplateArgumentLoc(TemplArgs[i]);
5906}
5907
5908void ASTRecordWriter::AddUnresolvedSet(const ASTUnresolvedSet &Set) {
5909 Record->push_back(Set.size());
5910 for (ASTUnresolvedSet::const_iterator
5911 I = Set.begin(), E = Set.end(); I != E; ++I) {
5912 AddDeclRef(I.getDecl());
5913 Record->push_back(I.getAccess());
5914 }
5915}
5916
5917// FIXME: Move this out of the main ASTRecordWriter interface.
5918void ASTRecordWriter::AddCXXBaseSpecifier(const CXXBaseSpecifier &Base) {
5919 Record->push_back(Base.isVirtual());
5920 Record->push_back(Base.isBaseOfClass());
5921 Record->push_back(Base.getAccessSpecifierAsWritten());
5922 Record->push_back(Base.getInheritConstructors());
5923 AddTypeSourceInfo(Base.getTypeSourceInfo());
5924 AddSourceRange(Base.getSourceRange());
5925 AddSourceLocation(Base.isPackExpansion()? Base.getEllipsisLoc()
5926 : SourceLocation());
5927}
5928
5929static uint64_t EmitCXXBaseSpecifiers(ASTWriter &W,
5930 ArrayRef<CXXBaseSpecifier> Bases) {
5931 ASTWriter::RecordData Record;
5932 ASTRecordWriter Writer(W, Record);
5933 Writer.push_back(Bases.size());
5934
5935 for (auto &Base : Bases)
5936 Writer.AddCXXBaseSpecifier(Base);
5937
5938 return Writer.Emit(serialization::DECL_CXX_BASE_SPECIFIERS);
5939}
5940
5941// FIXME: Move this out of the main ASTRecordWriter interface.
5942void ASTRecordWriter::AddCXXBaseSpecifiers(ArrayRef<CXXBaseSpecifier> Bases) {
5943 AddOffset(EmitCXXBaseSpecifiers(*Writer, Bases));
5944}
5945
5946static uint64_t
5947EmitCXXCtorInitializers(ASTWriter &W,
5948 ArrayRef<CXXCtorInitializer *> CtorInits) {
5949 ASTWriter::RecordData Record;
5950 ASTRecordWriter Writer(W, Record);
5951 Writer.push_back(CtorInits.size());
5952
5953 for (auto *Init : CtorInits) {
5954 if (Init->isBaseInitializer()) {
5955 Writer.push_back(CTOR_INITIALIZER_BASE);
5956 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5957 Writer.push_back(Init->isBaseVirtual());
5958 } else if (Init->isDelegatingInitializer()) {
5959 Writer.push_back(CTOR_INITIALIZER_DELEGATING);
5960 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5961 } else if (Init->isMemberInitializer()){
5962 Writer.push_back(CTOR_INITIALIZER_MEMBER);
5963 Writer.AddDeclRef(Init->getMember());
5964 } else {
5965 Writer.push_back(CTOR_INITIALIZER_INDIRECT_MEMBER);
5966 Writer.AddDeclRef(Init->getIndirectMember());
5967 }
5968
5969 Writer.AddSourceLocation(Init->getMemberLocation());
5970 Writer.AddStmt(Init->getInit());
5971 Writer.AddSourceLocation(Init->getLParenLoc());
5972 Writer.AddSourceLocation(Init->getRParenLoc());
5973 Writer.push_back(Init->isWritten());
5974 if (Init->isWritten())
5975 Writer.push_back(Init->getSourceOrder());
5976 }
5977
5978 return Writer.Emit(serialization::DECL_CXX_CTOR_INITIALIZERS);
5979}
5980
5981// FIXME: Move this out of the main ASTRecordWriter interface.
5982void ASTRecordWriter::AddCXXCtorInitializers(
5983 ArrayRef<CXXCtorInitializer *> CtorInits) {
5984 AddOffset(EmitCXXCtorInitializers(*Writer, CtorInits));
5985}
5986
5987void ASTRecordWriter::AddCXXDefinitionData(const CXXRecordDecl *D) {
5988 auto &Data = D->data();
5989 Record->push_back(Data.IsLambda);
5990 Record->push_back(Data.UserDeclaredConstructor);
5991 Record->push_back(Data.UserDeclaredSpecialMembers);
5992 Record->push_back(Data.Aggregate);
5993 Record->push_back(Data.PlainOldData);
5994 Record->push_back(Data.Empty);
5995 Record->push_back(Data.Polymorphic);
5996 Record->push_back(Data.Abstract);
5997 Record->push_back(Data.IsStandardLayout);
5998 Record->push_back(Data.IsCXX11StandardLayout);
5999 Record->push_back(Data.HasBasesWithFields);
6000 Record->push_back(Data.HasBasesWithNonStaticDataMembers);
6001 Record->push_back(Data.HasPrivateFields);
6002 Record->push_back(Data.HasProtectedFields);
6003 Record->push_back(Data.HasPublicFields);
6004 Record->push_back(Data.HasMutableFields);
6005 Record->push_back(Data.HasVariantMembers);
6006 Record->push_back(Data.HasOnlyCMembers);
6007 Record->push_back(Data.HasInClassInitializer);
6008 Record->push_back(Data.HasUninitializedReferenceMember);
6009 Record->push_back(Data.HasUninitializedFields);
6010 Record->push_back(Data.HasInheritedConstructor);
6011 Record->push_back(Data.HasInheritedAssignment);
6012 Record->push_back(Data.NeedOverloadResolutionForCopyConstructor);
6013 Record->push_back(Data.NeedOverloadResolutionForMoveConstructor);
6014 Record->push_back(Data.NeedOverloadResolutionForMoveAssignment);
6015 Record->push_back(Data.NeedOverloadResolutionForDestructor);
6016 Record->push_back(Data.DefaultedCopyConstructorIsDeleted);
6017 Record->push_back(Data.DefaultedMoveConstructorIsDeleted);
6018 Record->push_back(Data.DefaultedMoveAssignmentIsDeleted);
6019 Record->push_back(Data.DefaultedDestructorIsDeleted);
6020 Record->push_back(Data.HasTrivialSpecialMembers);
6021 Record->push_back(Data.HasTrivialSpecialMembersForCall);
6022 Record->push_back(Data.DeclaredNonTrivialSpecialMembers);
6023 Record->push_back(Data.DeclaredNonTrivialSpecialMembersForCall);
6024 Record->push_back(Data.HasIrrelevantDestructor);
6025 Record->push_back(Data.HasConstexprNonCopyMoveConstructor);
6026 Record->push_back(Data.HasDefaultedDefaultConstructor);
6027 Record->push_back(Data.DefaultedDefaultConstructorIsConstexpr);
6028 Record->push_back(Data.HasConstexprDefaultConstructor);
6029 Record->push_back(Data.HasNonLiteralTypeFieldsOrBases);
6030 Record->push_back(Data.ComputedVisibleConversions);
6031 Record->push_back(Data.UserProvidedDefaultConstructor);
6032 Record->push_back(Data.DeclaredSpecialMembers);
6033 Record->push_back(Data.ImplicitCopyConstructorCanHaveConstParamForVBase);
6034 Record->push_back(Data.ImplicitCopyConstructorCanHaveConstParamForNonVBase);
6035 Record->push_back(Data.ImplicitCopyAssignmentHasConstParam);
6036 Record->push_back(Data.HasDeclaredCopyConstructorWithConstParam);
6037 Record->push_back(Data.HasDeclaredCopyAssignmentWithConstParam);
6038
6039 // getODRHash will compute the ODRHash if it has not been previously computed.
6040 Record->push_back(D->getODRHash());
6041 bool ModulesDebugInfo = Writer->Context->getLangOpts().ModulesDebugInfo &&
6042 Writer->WritingModule && !D->isDependentType();
6043 Record->push_back(ModulesDebugInfo);
6044 if (ModulesDebugInfo)
6045 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(D));
6046
6047 // IsLambda bit is already saved.
6048
6049 Record->push_back(Data.NumBases);
6050 if (Data.NumBases > 0)
6051 AddCXXBaseSpecifiers(Data.bases());
6052
6053 // FIXME: Make VBases lazily computed when needed to avoid storing them.
6054 Record->push_back(Data.NumVBases);
6055 if (Data.NumVBases > 0)
6056 AddCXXBaseSpecifiers(Data.vbases());
6057
6058 AddUnresolvedSet(Data.Conversions.get(*Writer->Context));
6059 AddUnresolvedSet(Data.VisibleConversions.get(*Writer->Context));
6060 // Data.Definition is the owning decl, no need to write it.
6061 AddDeclRef(D->getFirstFriend());
6062
6063 // Add lambda-specific data.
6064 if (Data.IsLambda) {
6065 auto &Lambda = D->getLambdaData();
6066 Record->push_back(Lambda.Dependent);
6067 Record->push_back(Lambda.IsGenericLambda);
6068 Record->push_back(Lambda.CaptureDefault);
6069 Record->push_back(Lambda.NumCaptures);
6070 Record->push_back(Lambda.NumExplicitCaptures);
6071 Record->push_back(Lambda.ManglingNumber);
6072 AddDeclRef(D->getLambdaContextDecl());
6073 AddTypeSourceInfo(Lambda.MethodTyInfo);
6074 for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
6075 const LambdaCapture &Capture = Lambda.Captures[I];
6076 AddSourceLocation(Capture.getLocation());
6077 Record->push_back(Capture.isImplicit());
6078 Record->push_back(Capture.getCaptureKind());
6079 switch (Capture.getCaptureKind()) {
6080 case LCK_StarThis:
6081 case LCK_This:
6082 case LCK_VLAType:
6083 break;
6084 case LCK_ByCopy:
6085 case LCK_ByRef:
6086 VarDecl *Var =
6087 Capture.capturesVariable() ? Capture.getCapturedVar() : nullptr;
6088 AddDeclRef(Var);
6089 AddSourceLocation(Capture.isPackExpansion() ? Capture.getEllipsisLoc()
6090 : SourceLocation());
6091 break;
6092 }
6093 }
6094 }
6095}
6096
6097void ASTWriter::ReaderInitialized(ASTReader *Reader) {
6098 assert(Reader && "Cannot remove chain")(static_cast <bool> (Reader && "Cannot remove chain"
) ? void (0) : __assert_fail ("Reader && \"Cannot remove chain\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6098, __extension__ __PRETTY_FUNCTION__))
;
6099 assert((!Chain || Chain == Reader) && "Cannot replace chain")(static_cast <bool> ((!Chain || Chain == Reader) &&
"Cannot replace chain") ? void (0) : __assert_fail ("(!Chain || Chain == Reader) && \"Cannot replace chain\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6099, __extension__ __PRETTY_FUNCTION__))
;
6100 assert(FirstDeclID == NextDeclID &&(static_cast <bool> (FirstDeclID == NextDeclID &&
FirstTypeID == NextTypeID && FirstIdentID == NextIdentID
&& FirstMacroID == NextMacroID && FirstSubmoduleID
== NextSubmoduleID && FirstSelectorID == NextSelectorID
&& "Setting chain after writing has started.") ? void
(0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6106, __extension__ __PRETTY_FUNCTION__))
6101 FirstTypeID == NextTypeID &&(static_cast <bool> (FirstDeclID == NextDeclID &&
FirstTypeID == NextTypeID && FirstIdentID == NextIdentID
&& FirstMacroID == NextMacroID && FirstSubmoduleID
== NextSubmoduleID && FirstSelectorID == NextSelectorID
&& "Setting chain after writing has started.") ? void
(0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6106, __extension__ __PRETTY_FUNCTION__))
6102 FirstIdentID == NextIdentID &&(static_cast <bool> (FirstDeclID == NextDeclID &&
FirstTypeID == NextTypeID && FirstIdentID == NextIdentID
&& FirstMacroID == NextMacroID && FirstSubmoduleID
== NextSubmoduleID && FirstSelectorID == NextSelectorID
&& "Setting chain after writing has started.") ? void
(0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6106, __extension__ __PRETTY_FUNCTION__))
6103 FirstMacroID == NextMacroID &&(static_cast <bool> (FirstDeclID == NextDeclID &&
FirstTypeID == NextTypeID && FirstIdentID == NextIdentID
&& FirstMacroID == NextMacroID && FirstSubmoduleID
== NextSubmoduleID && FirstSelectorID == NextSelectorID
&& "Setting chain after writing has started.") ? void
(0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6106, __extension__ __PRETTY_FUNCTION__))
6104 FirstSubmoduleID == NextSubmoduleID &&(static_cast <bool> (FirstDeclID == NextDeclID &&
FirstTypeID == NextTypeID && FirstIdentID == NextIdentID
&& FirstMacroID == NextMacroID && FirstSubmoduleID
== NextSubmoduleID && FirstSelectorID == NextSelectorID
&& "Setting chain after writing has started.") ? void
(0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6106, __extension__ __PRETTY_FUNCTION__))
6105 FirstSelectorID == NextSelectorID &&(static_cast <bool> (FirstDeclID == NextDeclID &&
FirstTypeID == NextTypeID && FirstIdentID == NextIdentID
&& FirstMacroID == NextMacroID && FirstSubmoduleID
== NextSubmoduleID && FirstSelectorID == NextSelectorID
&& "Setting chain after writing has started.") ? void
(0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6106, __extension__ __PRETTY_FUNCTION__))
6106 "Setting chain after writing has started.")(static_cast <bool> (FirstDeclID == NextDeclID &&
FirstTypeID == NextTypeID && FirstIdentID == NextIdentID
&& FirstMacroID == NextMacroID && FirstSubmoduleID
== NextSubmoduleID && FirstSelectorID == NextSelectorID
&& "Setting chain after writing has started.") ? void
(0) : __assert_fail ("FirstDeclID == NextDeclID && FirstTypeID == NextTypeID && FirstIdentID == NextIdentID && FirstMacroID == NextMacroID && FirstSubmoduleID == NextSubmoduleID && FirstSelectorID == NextSelectorID && \"Setting chain after writing has started.\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6106, __extension__ __PRETTY_FUNCTION__))
;
6107
6108 Chain = Reader;
6109
6110 // Note, this will get called multiple times, once one the reader starts up
6111 // and again each time it's done reading a PCH or module.
6112 FirstDeclID = NUM_PREDEF_DECL_IDS + Chain->getTotalNumDecls();
6113 FirstTypeID = NUM_PREDEF_TYPE_IDS + Chain->getTotalNumTypes();
6114 FirstIdentID = NUM_PREDEF_IDENT_IDS + Chain->getTotalNumIdentifiers();
6115 FirstMacroID = NUM_PREDEF_MACRO_IDS + Chain->getTotalNumMacros();
6116 FirstSubmoduleID = NUM_PREDEF_SUBMODULE_IDS + Chain->getTotalNumSubmodules();
6117 FirstSelectorID = NUM_PREDEF_SELECTOR_IDS + Chain->getTotalNumSelectors();
6118 NextDeclID = FirstDeclID;
6119 NextTypeID = FirstTypeID;
6120 NextIdentID = FirstIdentID;
6121 NextMacroID = FirstMacroID;
6122 NextSelectorID = FirstSelectorID;
6123 NextSubmoduleID = FirstSubmoduleID;
6124}
6125
6126void ASTWriter::IdentifierRead(IdentID ID, IdentifierInfo *II) {
6127 // Always keep the highest ID. See \p TypeRead() for more information.
6128 IdentID &StoredID = IdentifierIDs[II];
6129 if (ID > StoredID)
6130 StoredID = ID;
6131}
6132
6133void ASTWriter::MacroRead(serialization::MacroID ID, MacroInfo *MI) {
6134 // Always keep the highest ID. See \p TypeRead() for more information.
6135 MacroID &StoredID = MacroIDs[MI];
6136 if (ID > StoredID)
6137 StoredID = ID;
6138}
6139
6140void ASTWriter::TypeRead(TypeIdx Idx, QualType T) {
6141 // Always take the highest-numbered type index. This copes with an interesting
6142 // case for chained AST writing where we schedule writing the type and then,
6143 // later, deserialize the type from another AST. In this case, we want to
6144 // keep the higher-numbered entry so that we can properly write it out to
6145 // the AST file.
6146 TypeIdx &StoredIdx = TypeIdxs[T];
6147 if (Idx.getIndex() >= StoredIdx.getIndex())
6148 StoredIdx = Idx;
6149}
6150
6151void ASTWriter::SelectorRead(SelectorID ID, Selector S) {
6152 // Always keep the highest ID. See \p TypeRead() for more information.
6153 SelectorID &StoredID = SelectorIDs[S];
6154 if (ID > StoredID)
6155 StoredID = ID;
6156}
6157
6158void ASTWriter::MacroDefinitionRead(serialization::PreprocessedEntityID ID,
6159 MacroDefinitionRecord *MD) {
6160 assert(MacroDefinitions.find(MD) == MacroDefinitions.end())(static_cast <bool> (MacroDefinitions.find(MD) == MacroDefinitions
.end()) ? void (0) : __assert_fail ("MacroDefinitions.find(MD) == MacroDefinitions.end()"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6160, __extension__ __PRETTY_FUNCTION__))
;
6161 MacroDefinitions[MD] = ID;
6162}
6163
6164void ASTWriter::ModuleRead(serialization::SubmoduleID ID, Module *Mod) {
6165 assert(SubmoduleIDs.find(Mod) == SubmoduleIDs.end())(static_cast <bool> (SubmoduleIDs.find(Mod) == SubmoduleIDs
.end()) ? void (0) : __assert_fail ("SubmoduleIDs.find(Mod) == SubmoduleIDs.end()"
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6165, __extension__ __PRETTY_FUNCTION__))
;
6166 SubmoduleIDs[Mod] = ID;
6167}
6168
6169void ASTWriter::CompletedTagDefinition(const TagDecl *D) {
6170 if (Chain && Chain->isProcessingUpdateRecords()) return;
6171 assert(D->isCompleteDefinition())(static_cast <bool> (D->isCompleteDefinition()) ? void
(0) : __assert_fail ("D->isCompleteDefinition()", "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6171, __extension__ __PRETTY_FUNCTION__))
;
6172 assert(!WritingAST && "Already writing the AST!")(static_cast <bool> (!WritingAST && "Already writing the AST!"
) ? void (0) : __assert_fail ("!WritingAST && \"Already writing the AST!\""
, "/build/llvm-toolchain-snapshot-7~svn329677/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6172, __extension__ __PRETTY_FUNCTION__))
;
6173 if (auto *RD = dyn_cast<CXXRecordDecl>(D)) {
6174 // We are interested when a PCH decl is modified.
6175 if (RD->isFromASTFile()) {
6176