Bug Summary

File:tools/clang/lib/Serialization/ASTWriter.cpp
Warning:line 420, column 9
1st function call argument is an uninitialized value

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~svn325874/build-llvm/tools/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization -I /build/llvm-toolchain-snapshot-7~svn325874/tools/clang/include -I /build/llvm-toolchain-snapshot-7~svn325874/build-llvm/tools/clang/include -I /build/llvm-toolchain-snapshot-7~svn325874/build-llvm/include -I /build/llvm-toolchain-snapshot-7~svn325874/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~svn325874/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-2018-02-23-163436-368-1 -x c++ /build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp

/build/llvm-toolchain-snapshot-7~svn325874/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/StringExtras.h"
86#include "llvm/ADT/StringMap.h"
87#include "llvm/ADT/StringRef.h"
88#include "llvm/Bitcode/BitCodes.h"
89#include "llvm/Bitcode/BitstreamWriter.h"
90#include "llvm/Support/Casting.h"
91#include "llvm/Support/Compression.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~svn325874/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
280 if (C.getHasRegParm() || C.getRegParm() || C.getProducesResult())
281 AbbrevToUse = 0;
282}
283
284void ASTTypeWriter::VisitFunctionNoProtoType(const FunctionNoProtoType *T) {
285 VisitFunctionType(T);
286 Code = TYPE_FUNCTION_NO_PROTO;
287}
288
289static void addExceptionSpec(const FunctionProtoType *T,
290 ASTRecordWriter &Record) {
291 Record.push_back(T->getExceptionSpecType());
292 if (T->getExceptionSpecType() == EST_Dynamic) {
293 Record.push_back(T->getNumExceptions());
294 for (unsigned I = 0, N = T->getNumExceptions(); I != N; ++I)
295 Record.AddTypeRef(T->getExceptionType(I));
296 } else if (T->getExceptionSpecType() == EST_ComputedNoexcept) {
297 Record.AddStmt(T->getNoexceptExpr());
298 } else if (T->getExceptionSpecType() == EST_Uninstantiated) {
299 Record.AddDeclRef(T->getExceptionSpecDecl());
300 Record.AddDeclRef(T->getExceptionSpecTemplate());
301 } else if (T->getExceptionSpecType() == EST_Unevaluated) {
302 Record.AddDeclRef(T->getExceptionSpecDecl());
303 }
304}
305
306void ASTTypeWriter::VisitFunctionProtoType(const FunctionProtoType *T) {
307 VisitFunctionType(T);
308
309 Record.push_back(T->isVariadic());
310 Record.push_back(T->hasTrailingReturn());
311 Record.push_back(T->getTypeQuals());
312 Record.push_back(static_cast<unsigned>(T->getRefQualifier()));
313 addExceptionSpec(T, Record);
314
315 Record.push_back(T->getNumParams());
316 for (unsigned I = 0, N = T->getNumParams(); I != N; ++I)
317 Record.AddTypeRef(T->getParamType(I));
318
319 if (T->hasExtParameterInfos()) {
320 for (unsigned I = 0, N = T->getNumParams(); I != N; ++I)
321 Record.push_back(T->getExtParameterInfo(I).getOpaqueValue());
322 }
323
324 if (T->isVariadic() || T->hasTrailingReturn() || T->getTypeQuals() ||
325 T->getRefQualifier() || T->getExceptionSpecType() != EST_None ||
326 T->hasExtParameterInfos())
327 AbbrevToUse = 0;
328
329 Code = TYPE_FUNCTION_PROTO;
330}
331
332void ASTTypeWriter::VisitUnresolvedUsingType(const UnresolvedUsingType *T) {
333 Record.AddDeclRef(T->getDecl());
334 Code = TYPE_UNRESOLVED_USING;
335}
336
337void ASTTypeWriter::VisitTypedefType(const TypedefType *T) {
338 Record.AddDeclRef(T->getDecl());
339 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 339, __extension__ __PRETTY_FUNCTION__))
;
340 Record.AddTypeRef(T->getCanonicalTypeInternal());
341 Code = TYPE_TYPEDEF;
342}
343
344void ASTTypeWriter::VisitTypeOfExprType(const TypeOfExprType *T) {
345 Record.AddStmt(T->getUnderlyingExpr());
346 Code = TYPE_TYPEOF_EXPR;
347}
348
349void ASTTypeWriter::VisitTypeOfType(const TypeOfType *T) {
350 Record.AddTypeRef(T->getUnderlyingType());
351 Code = TYPE_TYPEOF;
352}
353
354void ASTTypeWriter::VisitDecltypeType(const DecltypeType *T) {
355 Record.AddTypeRef(T->getUnderlyingType());
356 Record.AddStmt(T->getUnderlyingExpr());
357 Code = TYPE_DECLTYPE;
358}
359
360void ASTTypeWriter::VisitUnaryTransformType(const UnaryTransformType *T) {
361 Record.AddTypeRef(T->getBaseType());
362 Record.AddTypeRef(T->getUnderlyingType());
363 Record.push_back(T->getUTTKind());
364 Code = TYPE_UNARY_TRANSFORM;
365}
366
367void ASTTypeWriter::VisitAutoType(const AutoType *T) {
368 Record.AddTypeRef(T->getDeducedType());
369 Record.push_back((unsigned)T->getKeyword());
370 if (T->getDeducedType().isNull())
371 Record.push_back(T->isDependentType());
372 Code = TYPE_AUTO;
373}
374
375void ASTTypeWriter::VisitDeducedTemplateSpecializationType(
376 const DeducedTemplateSpecializationType *T) {
377 Record.AddTemplateName(T->getTemplateName());
378 Record.AddTypeRef(T->getDeducedType());
379 if (T->getDeducedType().isNull())
380 Record.push_back(T->isDependentType());
381 Code = TYPE_DEDUCED_TEMPLATE_SPECIALIZATION;
382}
383
384void ASTTypeWriter::VisitTagType(const TagType *T) {
385 Record.push_back(T->isDependentType());
386 Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
387 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 388, __extension__ __PRETTY_FUNCTION__))
388 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 388, __extension__ __PRETTY_FUNCTION__))
;
389}
390
391void ASTTypeWriter::VisitRecordType(const RecordType *T) {
392 VisitTagType(T);
393 Code = TYPE_RECORD;
394}
395
396void ASTTypeWriter::VisitEnumType(const EnumType *T) {
397 VisitTagType(T);
398 Code = TYPE_ENUM;
399}
400
401void ASTTypeWriter::VisitAttributedType(const AttributedType *T) {
402 Record.AddTypeRef(T->getModifiedType());
403 Record.AddTypeRef(T->getEquivalentType());
404 Record.push_back(T->getAttrKind());
405 Code = TYPE_ATTRIBUTED;
406}
407
408void
409ASTTypeWriter::VisitSubstTemplateTypeParmType(
410 const SubstTemplateTypeParmType *T) {
411 Record.AddTypeRef(QualType(T->getReplacedParameter(), 0));
412 Record.AddTypeRef(T->getReplacementType());
413 Code = TYPE_SUBST_TEMPLATE_TYPE_PARM;
414}
415
416void
417ASTTypeWriter::VisitSubstTemplateTypeParmPackType(
418 const SubstTemplateTypeParmPackType *T) {
419 Record.AddTypeRef(QualType(T->getReplacedParameter(), 0));
420 Record.AddTemplateArgument(T->getArgumentPack());
421 Code = TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK;
422}
423
424void
425ASTTypeWriter::VisitTemplateSpecializationType(
426 const TemplateSpecializationType *T) {
427 Record.push_back(T->isDependentType());
428 Record.AddTemplateName(T->getTemplateName());
429 Record.push_back(T->getNumArgs());
430 for (const auto &ArgI : *T)
431 Record.AddTemplateArgument(ArgI);
432 Record.AddTypeRef(T->isTypeAlias() ? T->getAliasedType()
433 : T->isCanonicalUnqualified()
434 ? QualType()
435 : T->getCanonicalTypeInternal());
436 Code = TYPE_TEMPLATE_SPECIALIZATION;
437}
438
439void
440ASTTypeWriter::VisitDependentSizedArrayType(const DependentSizedArrayType *T) {
441 VisitArrayType(T);
442 Record.AddStmt(T->getSizeExpr());
443 Record.AddSourceRange(T->getBracketsRange());
444 Code = TYPE_DEPENDENT_SIZED_ARRAY;
445}
446
447void
448ASTTypeWriter::VisitDependentSizedExtVectorType(
449 const DependentSizedExtVectorType *T) {
450 Record.AddTypeRef(T->getElementType());
451 Record.AddStmt(T->getSizeExpr());
452 Record.AddSourceLocation(T->getAttributeLoc());
453 Code = TYPE_DEPENDENT_SIZED_EXT_VECTOR;
454}
455
456void
457ASTTypeWriter::VisitDependentAddressSpaceType(
458 const DependentAddressSpaceType *T) {
459 Record.AddTypeRef(T->getPointeeType());
460 Record.AddStmt(T->getAddrSpaceExpr());
461 Record.AddSourceLocation(T->getAttributeLoc());
462 Code = TYPE_DEPENDENT_ADDRESS_SPACE;
463}
464
465void
466ASTTypeWriter::VisitTemplateTypeParmType(const TemplateTypeParmType *T) {
467 Record.push_back(T->getDepth());
468 Record.push_back(T->getIndex());
469 Record.push_back(T->isParameterPack());
470 Record.AddDeclRef(T->getDecl());
471 Code = TYPE_TEMPLATE_TYPE_PARM;
472}
473
474void
475ASTTypeWriter::VisitDependentNameType(const DependentNameType *T) {
476 Record.push_back(T->getKeyword());
477 Record.AddNestedNameSpecifier(T->getQualifier());
478 Record.AddIdentifierRef(T->getIdentifier());
479 Record.AddTypeRef(
480 T->isCanonicalUnqualified() ? QualType() : T->getCanonicalTypeInternal());
481 Code = TYPE_DEPENDENT_NAME;
482}
483
484void
485ASTTypeWriter::VisitDependentTemplateSpecializationType(
486 const DependentTemplateSpecializationType *T) {
487 Record.push_back(T->getKeyword());
488 Record.AddNestedNameSpecifier(T->getQualifier());
489 Record.AddIdentifierRef(T->getIdentifier());
490 Record.push_back(T->getNumArgs());
491 for (const auto &I : *T)
492 Record.AddTemplateArgument(I);
493 Code = TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION;
494}
495
496void ASTTypeWriter::VisitPackExpansionType(const PackExpansionType *T) {
497 Record.AddTypeRef(T->getPattern());
498 if (Optional<unsigned> NumExpansions = T->getNumExpansions())
499 Record.push_back(*NumExpansions + 1);
500 else
501 Record.push_back(0);
502 Code = TYPE_PACK_EXPANSION;
503}
504
505void ASTTypeWriter::VisitParenType(const ParenType *T) {
506 Record.AddTypeRef(T->getInnerType());
507 Code = TYPE_PAREN;
508}
509
510void ASTTypeWriter::VisitElaboratedType(const ElaboratedType *T) {
511 Record.push_back(T->getKeyword());
512 Record.AddNestedNameSpecifier(T->getQualifier());
513 Record.AddTypeRef(T->getNamedType());
514 Code = TYPE_ELABORATED;
515}
516
517void ASTTypeWriter::VisitInjectedClassNameType(const InjectedClassNameType *T) {
518 Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
519 Record.AddTypeRef(T->getInjectedSpecializationType());
520 Code = TYPE_INJECTED_CLASS_NAME;
521}
522
523void ASTTypeWriter::VisitObjCInterfaceType(const ObjCInterfaceType *T) {
524 Record.AddDeclRef(T->getDecl()->getCanonicalDecl());
525 Code = TYPE_OBJC_INTERFACE;
526}
527
528void ASTTypeWriter::VisitObjCTypeParamType(const ObjCTypeParamType *T) {
529 Record.AddDeclRef(T->getDecl());
530 Record.push_back(T->getNumProtocols());
531 for (const auto *I : T->quals())
532 Record.AddDeclRef(I);
533 Code = TYPE_OBJC_TYPE_PARAM;
534}
535
536void ASTTypeWriter::VisitObjCObjectType(const ObjCObjectType *T) {
537 Record.AddTypeRef(T->getBaseType());
538 Record.push_back(T->getTypeArgsAsWritten().size());
539 for (auto TypeArg : T->getTypeArgsAsWritten())
540 Record.AddTypeRef(TypeArg);
541 Record.push_back(T->getNumProtocols());
542 for (const auto *I : T->quals())
543 Record.AddDeclRef(I);
544 Record.push_back(T->isKindOfTypeAsWritten());
545 Code = TYPE_OBJC_OBJECT;
546}
547
548void
549ASTTypeWriter::VisitObjCObjectPointerType(const ObjCObjectPointerType *T) {
550 Record.AddTypeRef(T->getPointeeType());
551 Code = TYPE_OBJC_OBJECT_POINTER;
552}
553
554void
555ASTTypeWriter::VisitAtomicType(const AtomicType *T) {
556 Record.AddTypeRef(T->getValueType());
557 Code = TYPE_ATOMIC;
558}
559
560void
561ASTTypeWriter::VisitPipeType(const PipeType *T) {
562 Record.AddTypeRef(T->getElementType());
563 Record.push_back(T->isReadOnly());
564 Code = TYPE_PIPE;
565}
566
567namespace {
568
569class TypeLocWriter : public TypeLocVisitor<TypeLocWriter> {
570 ASTRecordWriter &Record;
571
572public:
573 TypeLocWriter(ASTRecordWriter &Record) : Record(Record) {}
574
575#define ABSTRACT_TYPELOC(CLASS, PARENT)
576#define TYPELOC(CLASS, PARENT) \
577 void Visit##CLASS##TypeLoc(CLASS##TypeLoc TyLoc);
578#include "clang/AST/TypeLocNodes.def"
579
580 void VisitArrayTypeLoc(ArrayTypeLoc TyLoc);
581 void VisitFunctionTypeLoc(FunctionTypeLoc TyLoc);
582};
583
584} // namespace
585
586void TypeLocWriter::VisitQualifiedTypeLoc(QualifiedTypeLoc TL) {
587 // nothing to do
588}
589
590void TypeLocWriter::VisitBuiltinTypeLoc(BuiltinTypeLoc TL) {
591 Record.AddSourceLocation(TL.getBuiltinLoc());
592 if (TL.needsExtraLocalData()) {
593 Record.push_back(TL.getWrittenTypeSpec());
594 Record.push_back(TL.getWrittenSignSpec());
595 Record.push_back(TL.getWrittenWidthSpec());
596 Record.push_back(TL.hasModeAttr());
597 }
598}
599
600void TypeLocWriter::VisitComplexTypeLoc(ComplexTypeLoc TL) {
601 Record.AddSourceLocation(TL.getNameLoc());
602}
603
604void TypeLocWriter::VisitPointerTypeLoc(PointerTypeLoc TL) {
605 Record.AddSourceLocation(TL.getStarLoc());
606}
607
608void TypeLocWriter::VisitDecayedTypeLoc(DecayedTypeLoc TL) {
609 // nothing to do
610}
611
612void TypeLocWriter::VisitAdjustedTypeLoc(AdjustedTypeLoc TL) {
613 // nothing to do
614}
615
616void TypeLocWriter::VisitBlockPointerTypeLoc(BlockPointerTypeLoc TL) {
617 Record.AddSourceLocation(TL.getCaretLoc());
618}
619
620void TypeLocWriter::VisitLValueReferenceTypeLoc(LValueReferenceTypeLoc TL) {
621 Record.AddSourceLocation(TL.getAmpLoc());
622}
623
624void TypeLocWriter::VisitRValueReferenceTypeLoc(RValueReferenceTypeLoc TL) {
625 Record.AddSourceLocation(TL.getAmpAmpLoc());
626}
627
628void TypeLocWriter::VisitMemberPointerTypeLoc(MemberPointerTypeLoc TL) {
629 Record.AddSourceLocation(TL.getStarLoc());
630 Record.AddTypeSourceInfo(TL.getClassTInfo());
631}
632
633void TypeLocWriter::VisitArrayTypeLoc(ArrayTypeLoc TL) {
634 Record.AddSourceLocation(TL.getLBracketLoc());
635 Record.AddSourceLocation(TL.getRBracketLoc());
636 Record.push_back(TL.getSizeExpr() ? 1 : 0);
637 if (TL.getSizeExpr())
638 Record.AddStmt(TL.getSizeExpr());
639}
640
641void TypeLocWriter::VisitConstantArrayTypeLoc(ConstantArrayTypeLoc TL) {
642 VisitArrayTypeLoc(TL);
643}
644
645void TypeLocWriter::VisitIncompleteArrayTypeLoc(IncompleteArrayTypeLoc TL) {
646 VisitArrayTypeLoc(TL);
647}
648
649void TypeLocWriter::VisitVariableArrayTypeLoc(VariableArrayTypeLoc TL) {
650 VisitArrayTypeLoc(TL);
651}
652
653void TypeLocWriter::VisitDependentSizedArrayTypeLoc(
654 DependentSizedArrayTypeLoc TL) {
655 VisitArrayTypeLoc(TL);
656}
657
658void TypeLocWriter::VisitDependentAddressSpaceTypeLoc(
659 DependentAddressSpaceTypeLoc TL) {
660 Record.AddSourceLocation(TL.getAttrNameLoc());
661 SourceRange range = TL.getAttrOperandParensRange();
662 Record.AddSourceLocation(range.getBegin());
663 Record.AddSourceLocation(range.getEnd());
664 Record.AddStmt(TL.getAttrExprOperand());
665}
666
667void TypeLocWriter::VisitDependentSizedExtVectorTypeLoc(
668 DependentSizedExtVectorTypeLoc TL) {
669 Record.AddSourceLocation(TL.getNameLoc());
670}
671
672void TypeLocWriter::VisitVectorTypeLoc(VectorTypeLoc TL) {
673 Record.AddSourceLocation(TL.getNameLoc());
674}
675
676void TypeLocWriter::VisitExtVectorTypeLoc(ExtVectorTypeLoc TL) {
677 Record.AddSourceLocation(TL.getNameLoc());
678}
679
680void TypeLocWriter::VisitFunctionTypeLoc(FunctionTypeLoc TL) {
681 Record.AddSourceLocation(TL.getLocalRangeBegin());
682 Record.AddSourceLocation(TL.getLParenLoc());
683 Record.AddSourceLocation(TL.getRParenLoc());
684 Record.AddSourceRange(TL.getExceptionSpecRange());
685 Record.AddSourceLocation(TL.getLocalRangeEnd());
686 for (unsigned i = 0, e = TL.getNumParams(); i != e; ++i)
687 Record.AddDeclRef(TL.getParam(i));
688}
689
690void TypeLocWriter::VisitFunctionProtoTypeLoc(FunctionProtoTypeLoc TL) {
691 VisitFunctionTypeLoc(TL);
692}
693
694void TypeLocWriter::VisitFunctionNoProtoTypeLoc(FunctionNoProtoTypeLoc TL) {
695 VisitFunctionTypeLoc(TL);
696}
697
698void TypeLocWriter::VisitUnresolvedUsingTypeLoc(UnresolvedUsingTypeLoc TL) {
699 Record.AddSourceLocation(TL.getNameLoc());
700}
701
702void TypeLocWriter::VisitTypedefTypeLoc(TypedefTypeLoc TL) {
703 Record.AddSourceLocation(TL.getNameLoc());
704}
705
706void TypeLocWriter::VisitObjCTypeParamTypeLoc(ObjCTypeParamTypeLoc TL) {
707 if (TL.getNumProtocols()) {
708 Record.AddSourceLocation(TL.getProtocolLAngleLoc());
709 Record.AddSourceLocation(TL.getProtocolRAngleLoc());
710 }
711 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
712 Record.AddSourceLocation(TL.getProtocolLoc(i));
713}
714
715void TypeLocWriter::VisitTypeOfExprTypeLoc(TypeOfExprTypeLoc TL) {
716 Record.AddSourceLocation(TL.getTypeofLoc());
717 Record.AddSourceLocation(TL.getLParenLoc());
718 Record.AddSourceLocation(TL.getRParenLoc());
719}
720
721void TypeLocWriter::VisitTypeOfTypeLoc(TypeOfTypeLoc TL) {
722 Record.AddSourceLocation(TL.getTypeofLoc());
723 Record.AddSourceLocation(TL.getLParenLoc());
724 Record.AddSourceLocation(TL.getRParenLoc());
725 Record.AddTypeSourceInfo(TL.getUnderlyingTInfo());
726}
727
728void TypeLocWriter::VisitDecltypeTypeLoc(DecltypeTypeLoc TL) {
729 Record.AddSourceLocation(TL.getNameLoc());
730}
731
732void TypeLocWriter::VisitUnaryTransformTypeLoc(UnaryTransformTypeLoc TL) {
733 Record.AddSourceLocation(TL.getKWLoc());
734 Record.AddSourceLocation(TL.getLParenLoc());
735 Record.AddSourceLocation(TL.getRParenLoc());
736 Record.AddTypeSourceInfo(TL.getUnderlyingTInfo());
737}
738
739void TypeLocWriter::VisitAutoTypeLoc(AutoTypeLoc TL) {
740 Record.AddSourceLocation(TL.getNameLoc());
741}
742
743void TypeLocWriter::VisitDeducedTemplateSpecializationTypeLoc(
744 DeducedTemplateSpecializationTypeLoc TL) {
745 Record.AddSourceLocation(TL.getTemplateNameLoc());
746}
747
748void TypeLocWriter::VisitRecordTypeLoc(RecordTypeLoc TL) {
749 Record.AddSourceLocation(TL.getNameLoc());
750}
751
752void TypeLocWriter::VisitEnumTypeLoc(EnumTypeLoc TL) {
753 Record.AddSourceLocation(TL.getNameLoc());
754}
755
756void TypeLocWriter::VisitAttributedTypeLoc(AttributedTypeLoc TL) {
757 Record.AddSourceLocation(TL.getAttrNameLoc());
758 if (TL.hasAttrOperand()) {
759 SourceRange range = TL.getAttrOperandParensRange();
760 Record.AddSourceLocation(range.getBegin());
761 Record.AddSourceLocation(range.getEnd());
762 }
763 if (TL.hasAttrExprOperand()) {
764 Expr *operand = TL.getAttrExprOperand();
765 Record.push_back(operand ? 1 : 0);
766 if (operand) Record.AddStmt(operand);
767 } else if (TL.hasAttrEnumOperand()) {
768 Record.AddSourceLocation(TL.getAttrEnumOperandLoc());
769 }
770}
771
772void TypeLocWriter::VisitTemplateTypeParmTypeLoc(TemplateTypeParmTypeLoc TL) {
773 Record.AddSourceLocation(TL.getNameLoc());
774}
775
776void TypeLocWriter::VisitSubstTemplateTypeParmTypeLoc(
777 SubstTemplateTypeParmTypeLoc TL) {
778 Record.AddSourceLocation(TL.getNameLoc());
779}
780
781void TypeLocWriter::VisitSubstTemplateTypeParmPackTypeLoc(
782 SubstTemplateTypeParmPackTypeLoc TL) {
783 Record.AddSourceLocation(TL.getNameLoc());
784}
785
786void TypeLocWriter::VisitTemplateSpecializationTypeLoc(
787 TemplateSpecializationTypeLoc TL) {
788 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
789 Record.AddSourceLocation(TL.getTemplateNameLoc());
790 Record.AddSourceLocation(TL.getLAngleLoc());
791 Record.AddSourceLocation(TL.getRAngleLoc());
792 for (unsigned i = 0, e = TL.getNumArgs(); i != e; ++i)
793 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(i).getArgument().getKind(),
794 TL.getArgLoc(i).getLocInfo());
795}
796
797void TypeLocWriter::VisitParenTypeLoc(ParenTypeLoc TL) {
798 Record.AddSourceLocation(TL.getLParenLoc());
799 Record.AddSourceLocation(TL.getRParenLoc());
800}
801
802void TypeLocWriter::VisitElaboratedTypeLoc(ElaboratedTypeLoc TL) {
803 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
804 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
805}
806
807void TypeLocWriter::VisitInjectedClassNameTypeLoc(InjectedClassNameTypeLoc TL) {
808 Record.AddSourceLocation(TL.getNameLoc());
809}
810
811void TypeLocWriter::VisitDependentNameTypeLoc(DependentNameTypeLoc TL) {
812 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
813 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
814 Record.AddSourceLocation(TL.getNameLoc());
815}
816
817void TypeLocWriter::VisitDependentTemplateSpecializationTypeLoc(
818 DependentTemplateSpecializationTypeLoc TL) {
819 Record.AddSourceLocation(TL.getElaboratedKeywordLoc());
820 Record.AddNestedNameSpecifierLoc(TL.getQualifierLoc());
821 Record.AddSourceLocation(TL.getTemplateKeywordLoc());
822 Record.AddSourceLocation(TL.getTemplateNameLoc());
823 Record.AddSourceLocation(TL.getLAngleLoc());
824 Record.AddSourceLocation(TL.getRAngleLoc());
825 for (unsigned I = 0, E = TL.getNumArgs(); I != E; ++I)
826 Record.AddTemplateArgumentLocInfo(TL.getArgLoc(I).getArgument().getKind(),
827 TL.getArgLoc(I).getLocInfo());
828}
829
830void TypeLocWriter::VisitPackExpansionTypeLoc(PackExpansionTypeLoc TL) {
831 Record.AddSourceLocation(TL.getEllipsisLoc());
832}
833
834void TypeLocWriter::VisitObjCInterfaceTypeLoc(ObjCInterfaceTypeLoc TL) {
835 Record.AddSourceLocation(TL.getNameLoc());
836}
837
838void TypeLocWriter::VisitObjCObjectTypeLoc(ObjCObjectTypeLoc TL) {
839 Record.push_back(TL.hasBaseTypeAsWritten());
840 Record.AddSourceLocation(TL.getTypeArgsLAngleLoc());
841 Record.AddSourceLocation(TL.getTypeArgsRAngleLoc());
842 for (unsigned i = 0, e = TL.getNumTypeArgs(); i != e; ++i)
843 Record.AddTypeSourceInfo(TL.getTypeArgTInfo(i));
844 Record.AddSourceLocation(TL.getProtocolLAngleLoc());
845 Record.AddSourceLocation(TL.getProtocolRAngleLoc());
846 for (unsigned i = 0, e = TL.getNumProtocols(); i != e; ++i)
847 Record.AddSourceLocation(TL.getProtocolLoc(i));
848}
849
850void TypeLocWriter::VisitObjCObjectPointerTypeLoc(ObjCObjectPointerTypeLoc TL) {
851 Record.AddSourceLocation(TL.getStarLoc());
852}
853
854void TypeLocWriter::VisitAtomicTypeLoc(AtomicTypeLoc TL) {
855 Record.AddSourceLocation(TL.getKWLoc());
856 Record.AddSourceLocation(TL.getLParenLoc());
857 Record.AddSourceLocation(TL.getRParenLoc());
858}
859
860void TypeLocWriter::VisitPipeTypeLoc(PipeTypeLoc TL) {
861 Record.AddSourceLocation(TL.getKWLoc());
862}
863
864void ASTWriter::WriteTypeAbbrevs() {
865 using namespace llvm;
866
867 std::shared_ptr<BitCodeAbbrev> Abv;
868
869 // Abbreviation for TYPE_EXT_QUAL
870 Abv = std::make_shared<BitCodeAbbrev>();
871 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_EXT_QUAL));
872 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Type
873 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 3)); // Quals
874 TypeExtQualAbbrev = Stream.EmitAbbrev(std::move(Abv));
875
876 // Abbreviation for TYPE_FUNCTION_PROTO
877 Abv = std::make_shared<BitCodeAbbrev>();
878 Abv->Add(BitCodeAbbrevOp(serialization::TYPE_FUNCTION_PROTO));
879 // FunctionType
880 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ReturnType
881 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // NoReturn
882 Abv->Add(BitCodeAbbrevOp(0)); // HasRegParm
883 Abv->Add(BitCodeAbbrevOp(0)); // RegParm
884 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 4)); // CC
885 Abv->Add(BitCodeAbbrevOp(0)); // ProducesResult
886 Abv->Add(BitCodeAbbrevOp(0)); // NoCallerSavedRegs
887 // FunctionProtoType
888 Abv->Add(BitCodeAbbrevOp(0)); // IsVariadic
889 Abv->Add(BitCodeAbbrevOp(0)); // HasTrailingReturn
890 Abv->Add(BitCodeAbbrevOp(0)); // TypeQuals
891 Abv->Add(BitCodeAbbrevOp(0)); // RefQualifier
892 Abv->Add(BitCodeAbbrevOp(EST_None)); // ExceptionSpec
893 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // NumParams
894 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Array));
895 Abv->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Params
896 TypeFunctionProtoAbbrev = Stream.EmitAbbrev(std::move(Abv));
897}
898
899//===----------------------------------------------------------------------===//
900// ASTWriter Implementation
901//===----------------------------------------------------------------------===//
902
903static void EmitBlockID(unsigned ID, const char *Name,
904 llvm::BitstreamWriter &Stream,
905 ASTWriter::RecordDataImpl &Record) {
906 Record.clear();
907 Record.push_back(ID);
908 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETBID, Record);
909
910 // Emit the block name if present.
911 if (!Name || Name[0] == 0)
912 return;
913 Record.clear();
914 while (*Name)
915 Record.push_back(*Name++);
916 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_BLOCKNAME, Record);
917}
918
919static void EmitRecordID(unsigned ID, const char *Name,
920 llvm::BitstreamWriter &Stream,
921 ASTWriter::RecordDataImpl &Record) {
922 Record.clear();
923 Record.push_back(ID);
924 while (*Name)
925 Record.push_back(*Name++);
926 Stream.EmitRecord(llvm::bitc::BLOCKINFO_CODE_SETRECORDNAME, Record);
927}
928
929static void AddStmtsExprs(llvm::BitstreamWriter &Stream,
930 ASTWriter::RecordDataImpl &Record) {
931#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
932 RECORD(STMT_STOP);
933 RECORD(STMT_NULL_PTR);
934 RECORD(STMT_REF_PTR);
935 RECORD(STMT_NULL);
936 RECORD(STMT_COMPOUND);
937 RECORD(STMT_CASE);
938 RECORD(STMT_DEFAULT);
939 RECORD(STMT_LABEL);
940 RECORD(STMT_ATTRIBUTED);
941 RECORD(STMT_IF);
942 RECORD(STMT_SWITCH);
943 RECORD(STMT_WHILE);
944 RECORD(STMT_DO);
945 RECORD(STMT_FOR);
946 RECORD(STMT_GOTO);
947 RECORD(STMT_INDIRECT_GOTO);
948 RECORD(STMT_CONTINUE);
949 RECORD(STMT_BREAK);
950 RECORD(STMT_RETURN);
951 RECORD(STMT_DECL);
952 RECORD(STMT_GCCASM);
953 RECORD(STMT_MSASM);
954 RECORD(EXPR_PREDEFINED);
955 RECORD(EXPR_DECL_REF);
956 RECORD(EXPR_INTEGER_LITERAL);
957 RECORD(EXPR_FLOATING_LITERAL);
958 RECORD(EXPR_IMAGINARY_LITERAL);
959 RECORD(EXPR_STRING_LITERAL);
960 RECORD(EXPR_CHARACTER_LITERAL);
961 RECORD(EXPR_PAREN);
962 RECORD(EXPR_PAREN_LIST);
963 RECORD(EXPR_UNARY_OPERATOR);
964 RECORD(EXPR_SIZEOF_ALIGN_OF);
965 RECORD(EXPR_ARRAY_SUBSCRIPT);
966 RECORD(EXPR_CALL);
967 RECORD(EXPR_MEMBER);
968 RECORD(EXPR_BINARY_OPERATOR);
969 RECORD(EXPR_COMPOUND_ASSIGN_OPERATOR);
970 RECORD(EXPR_CONDITIONAL_OPERATOR);
971 RECORD(EXPR_IMPLICIT_CAST);
972 RECORD(EXPR_CSTYLE_CAST);
973 RECORD(EXPR_COMPOUND_LITERAL);
974 RECORD(EXPR_EXT_VECTOR_ELEMENT);
975 RECORD(EXPR_INIT_LIST);
976 RECORD(EXPR_DESIGNATED_INIT);
977 RECORD(EXPR_DESIGNATED_INIT_UPDATE);
978 RECORD(EXPR_IMPLICIT_VALUE_INIT);
979 RECORD(EXPR_NO_INIT);
980 RECORD(EXPR_VA_ARG);
981 RECORD(EXPR_ADDR_LABEL);
982 RECORD(EXPR_STMT);
983 RECORD(EXPR_CHOOSE);
984 RECORD(EXPR_GNU_NULL);
985 RECORD(EXPR_SHUFFLE_VECTOR);
986 RECORD(EXPR_BLOCK);
987 RECORD(EXPR_GENERIC_SELECTION);
988 RECORD(EXPR_OBJC_STRING_LITERAL);
989 RECORD(EXPR_OBJC_BOXED_EXPRESSION);
990 RECORD(EXPR_OBJC_ARRAY_LITERAL);
991 RECORD(EXPR_OBJC_DICTIONARY_LITERAL);
992 RECORD(EXPR_OBJC_ENCODE);
993 RECORD(EXPR_OBJC_SELECTOR_EXPR);
994 RECORD(EXPR_OBJC_PROTOCOL_EXPR);
995 RECORD(EXPR_OBJC_IVAR_REF_EXPR);
996 RECORD(EXPR_OBJC_PROPERTY_REF_EXPR);
997 RECORD(EXPR_OBJC_KVC_REF_EXPR);
998 RECORD(EXPR_OBJC_MESSAGE_EXPR);
999 RECORD(STMT_OBJC_FOR_COLLECTION);
1000 RECORD(STMT_OBJC_CATCH);
1001 RECORD(STMT_OBJC_FINALLY);
1002 RECORD(STMT_OBJC_AT_TRY);
1003 RECORD(STMT_OBJC_AT_SYNCHRONIZED);
1004 RECORD(STMT_OBJC_AT_THROW);
1005 RECORD(EXPR_OBJC_BOOL_LITERAL);
1006 RECORD(STMT_CXX_CATCH);
1007 RECORD(STMT_CXX_TRY);
1008 RECORD(STMT_CXX_FOR_RANGE);
1009 RECORD(EXPR_CXX_OPERATOR_CALL);
1010 RECORD(EXPR_CXX_MEMBER_CALL);
1011 RECORD(EXPR_CXX_CONSTRUCT);
1012 RECORD(EXPR_CXX_TEMPORARY_OBJECT);
1013 RECORD(EXPR_CXX_STATIC_CAST);
1014 RECORD(EXPR_CXX_DYNAMIC_CAST);
1015 RECORD(EXPR_CXX_REINTERPRET_CAST);
1016 RECORD(EXPR_CXX_CONST_CAST);
1017 RECORD(EXPR_CXX_FUNCTIONAL_CAST);
1018 RECORD(EXPR_USER_DEFINED_LITERAL);
1019 RECORD(EXPR_CXX_STD_INITIALIZER_LIST);
1020 RECORD(EXPR_CXX_BOOL_LITERAL);
1021 RECORD(EXPR_CXX_NULL_PTR_LITERAL);
1022 RECORD(EXPR_CXX_TYPEID_EXPR);
1023 RECORD(EXPR_CXX_TYPEID_TYPE);
1024 RECORD(EXPR_CXX_THIS);
1025 RECORD(EXPR_CXX_THROW);
1026 RECORD(EXPR_CXX_DEFAULT_ARG);
1027 RECORD(EXPR_CXX_DEFAULT_INIT);
1028 RECORD(EXPR_CXX_BIND_TEMPORARY);
1029 RECORD(EXPR_CXX_SCALAR_VALUE_INIT);
1030 RECORD(EXPR_CXX_NEW);
1031 RECORD(EXPR_CXX_DELETE);
1032 RECORD(EXPR_CXX_PSEUDO_DESTRUCTOR);
1033 RECORD(EXPR_EXPR_WITH_CLEANUPS);
1034 RECORD(EXPR_CXX_DEPENDENT_SCOPE_MEMBER);
1035 RECORD(EXPR_CXX_DEPENDENT_SCOPE_DECL_REF);
1036 RECORD(EXPR_CXX_UNRESOLVED_CONSTRUCT);
1037 RECORD(EXPR_CXX_UNRESOLVED_MEMBER);
1038 RECORD(EXPR_CXX_UNRESOLVED_LOOKUP);
1039 RECORD(EXPR_CXX_EXPRESSION_TRAIT);
1040 RECORD(EXPR_CXX_NOEXCEPT);
1041 RECORD(EXPR_OPAQUE_VALUE);
1042 RECORD(EXPR_BINARY_CONDITIONAL_OPERATOR);
1043 RECORD(EXPR_TYPE_TRAIT);
1044 RECORD(EXPR_ARRAY_TYPE_TRAIT);
1045 RECORD(EXPR_PACK_EXPANSION);
1046 RECORD(EXPR_SIZEOF_PACK);
1047 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM);
1048 RECORD(EXPR_SUBST_NON_TYPE_TEMPLATE_PARM_PACK);
1049 RECORD(EXPR_FUNCTION_PARM_PACK);
1050 RECORD(EXPR_MATERIALIZE_TEMPORARY);
1051 RECORD(EXPR_CUDA_KERNEL_CALL);
1052 RECORD(EXPR_CXX_UUIDOF_EXPR);
1053 RECORD(EXPR_CXX_UUIDOF_TYPE);
1054 RECORD(EXPR_LAMBDA);
1055#undef RECORD
1056}
1057
1058void ASTWriter::WriteBlockInfoBlock() {
1059 RecordData Record;
1060 Stream.EnterBlockInfoBlock();
1061
1062#define BLOCK(X) EmitBlockID(X ## _ID, #X, Stream, Record)
1063#define RECORD(X) EmitRecordID(X, #X, Stream, Record)
1064
1065 // Control Block.
1066 BLOCK(CONTROL_BLOCK);
1067 RECORD(METADATA);
1068 RECORD(MODULE_NAME);
1069 RECORD(MODULE_DIRECTORY);
1070 RECORD(MODULE_MAP_FILE);
1071 RECORD(IMPORTS);
1072 RECORD(ORIGINAL_FILE);
1073 RECORD(ORIGINAL_PCH_DIR);
1074 RECORD(ORIGINAL_FILE_ID);
1075 RECORD(INPUT_FILE_OFFSETS);
1076
1077 BLOCK(OPTIONS_BLOCK);
1078 RECORD(LANGUAGE_OPTIONS);
1079 RECORD(TARGET_OPTIONS);
1080 RECORD(FILE_SYSTEM_OPTIONS);
1081 RECORD(HEADER_SEARCH_OPTIONS);
1082 RECORD(PREPROCESSOR_OPTIONS);
1083
1084 BLOCK(INPUT_FILES_BLOCK);
1085 RECORD(INPUT_FILE);
1086
1087 // AST Top-Level Block.
1088 BLOCK(AST_BLOCK);
1089 RECORD(TYPE_OFFSET);
1090 RECORD(DECL_OFFSET);
1091 RECORD(IDENTIFIER_OFFSET);
1092 RECORD(IDENTIFIER_TABLE);
1093 RECORD(EAGERLY_DESERIALIZED_DECLS);
1094 RECORD(MODULAR_CODEGEN_DECLS);
1095 RECORD(SPECIAL_TYPES);
1096 RECORD(STATISTICS);
1097 RECORD(TENTATIVE_DEFINITIONS);
1098 RECORD(SELECTOR_OFFSETS);
1099 RECORD(METHOD_POOL);
1100 RECORD(PP_COUNTER_VALUE);
1101 RECORD(SOURCE_LOCATION_OFFSETS);
1102 RECORD(SOURCE_LOCATION_PRELOADS);
1103 RECORD(EXT_VECTOR_DECLS);
1104 RECORD(UNUSED_FILESCOPED_DECLS);
1105 RECORD(PPD_ENTITIES_OFFSETS);
1106 RECORD(VTABLE_USES);
1107 RECORD(PPD_SKIPPED_RANGES);
1108 RECORD(REFERENCED_SELECTOR_POOL);
1109 RECORD(TU_UPDATE_LEXICAL);
1110 RECORD(SEMA_DECL_REFS);
1111 RECORD(WEAK_UNDECLARED_IDENTIFIERS);
1112 RECORD(PENDING_IMPLICIT_INSTANTIATIONS);
1113 RECORD(UPDATE_VISIBLE);
1114 RECORD(DECL_UPDATE_OFFSETS);
1115 RECORD(DECL_UPDATES);
1116 RECORD(CUDA_SPECIAL_DECL_REFS);
1117 RECORD(HEADER_SEARCH_TABLE);
1118 RECORD(FP_PRAGMA_OPTIONS);
1119 RECORD(OPENCL_EXTENSIONS);
1120 RECORD(OPENCL_EXTENSION_TYPES);
1121 RECORD(OPENCL_EXTENSION_DECLS);
1122 RECORD(DELEGATING_CTORS);
1123 RECORD(KNOWN_NAMESPACES);
1124 RECORD(MODULE_OFFSET_MAP);
1125 RECORD(SOURCE_MANAGER_LINE_TABLE);
1126 RECORD(OBJC_CATEGORIES_MAP);
1127 RECORD(FILE_SORTED_DECLS);
1128 RECORD(IMPORTED_MODULES);
1129 RECORD(OBJC_CATEGORIES);
1130 RECORD(MACRO_OFFSET);
1131 RECORD(INTERESTING_IDENTIFIERS);
1132 RECORD(UNDEFINED_BUT_USED);
1133 RECORD(LATE_PARSED_TEMPLATE);
1134 RECORD(OPTIMIZE_PRAGMA_OPTIONS);
1135 RECORD(MSSTRUCT_PRAGMA_OPTIONS);
1136 RECORD(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS);
1137 RECORD(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES);
1138 RECORD(DELETE_EXPRS_TO_ANALYZE);
1139 RECORD(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH);
1140 RECORD(PP_CONDITIONAL_STACK);
1141
1142 // SourceManager Block.
1143 BLOCK(SOURCE_MANAGER_BLOCK);
1144 RECORD(SM_SLOC_FILE_ENTRY);
1145 RECORD(SM_SLOC_BUFFER_ENTRY);
1146 RECORD(SM_SLOC_BUFFER_BLOB);
1147 RECORD(SM_SLOC_BUFFER_BLOB_COMPRESSED);
1148 RECORD(SM_SLOC_EXPANSION_ENTRY);
1149
1150 // Preprocessor Block.
1151 BLOCK(PREPROCESSOR_BLOCK);
1152 RECORD(PP_MACRO_DIRECTIVE_HISTORY);
1153 RECORD(PP_MACRO_FUNCTION_LIKE);
1154 RECORD(PP_MACRO_OBJECT_LIKE);
1155 RECORD(PP_MODULE_MACRO);
1156 RECORD(PP_TOKEN);
1157
1158 // Submodule Block.
1159 BLOCK(SUBMODULE_BLOCK);
1160 RECORD(SUBMODULE_METADATA);
1161 RECORD(SUBMODULE_DEFINITION);
1162 RECORD(SUBMODULE_UMBRELLA_HEADER);
1163 RECORD(SUBMODULE_HEADER);
1164 RECORD(SUBMODULE_TOPHEADER);
1165 RECORD(SUBMODULE_UMBRELLA_DIR);
1166 RECORD(SUBMODULE_IMPORTS);
1167 RECORD(SUBMODULE_EXPORTS);
1168 RECORD(SUBMODULE_REQUIRES);
1169 RECORD(SUBMODULE_EXCLUDED_HEADER);
1170 RECORD(SUBMODULE_LINK_LIBRARY);
1171 RECORD(SUBMODULE_CONFIG_MACRO);
1172 RECORD(SUBMODULE_CONFLICT);
1173 RECORD(SUBMODULE_PRIVATE_HEADER);
1174 RECORD(SUBMODULE_TEXTUAL_HEADER);
1175 RECORD(SUBMODULE_PRIVATE_TEXTUAL_HEADER);
1176 RECORD(SUBMODULE_INITIALIZERS);
1177 RECORD(SUBMODULE_EXPORT_AS);
1178
1179 // Comments Block.
1180 BLOCK(COMMENTS_BLOCK);
1181 RECORD(COMMENTS_RAW_COMMENT);
1182
1183 // Decls and Types block.
1184 BLOCK(DECLTYPES_BLOCK);
1185 RECORD(TYPE_EXT_QUAL);
1186 RECORD(TYPE_COMPLEX);
1187 RECORD(TYPE_POINTER);
1188 RECORD(TYPE_BLOCK_POINTER);
1189 RECORD(TYPE_LVALUE_REFERENCE);
1190 RECORD(TYPE_RVALUE_REFERENCE);
1191 RECORD(TYPE_MEMBER_POINTER);
1192 RECORD(TYPE_CONSTANT_ARRAY);
1193 RECORD(TYPE_INCOMPLETE_ARRAY);
1194 RECORD(TYPE_VARIABLE_ARRAY);
1195 RECORD(TYPE_VECTOR);
1196 RECORD(TYPE_EXT_VECTOR);
1197 RECORD(TYPE_FUNCTION_NO_PROTO);
1198 RECORD(TYPE_FUNCTION_PROTO);
1199 RECORD(TYPE_TYPEDEF);
1200 RECORD(TYPE_TYPEOF_EXPR);
1201 RECORD(TYPE_TYPEOF);
1202 RECORD(TYPE_RECORD);
1203 RECORD(TYPE_ENUM);
1204 RECORD(TYPE_OBJC_INTERFACE);
1205 RECORD(TYPE_OBJC_OBJECT_POINTER);
1206 RECORD(TYPE_DECLTYPE);
1207 RECORD(TYPE_ELABORATED);
1208 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM);
1209 RECORD(TYPE_UNRESOLVED_USING);
1210 RECORD(TYPE_INJECTED_CLASS_NAME);
1211 RECORD(TYPE_OBJC_OBJECT);
1212 RECORD(TYPE_TEMPLATE_TYPE_PARM);
1213 RECORD(TYPE_TEMPLATE_SPECIALIZATION);
1214 RECORD(TYPE_DEPENDENT_NAME);
1215 RECORD(TYPE_DEPENDENT_TEMPLATE_SPECIALIZATION);
1216 RECORD(TYPE_DEPENDENT_SIZED_ARRAY);
1217 RECORD(TYPE_PAREN);
1218 RECORD(TYPE_PACK_EXPANSION);
1219 RECORD(TYPE_ATTRIBUTED);
1220 RECORD(TYPE_SUBST_TEMPLATE_TYPE_PARM_PACK);
1221 RECORD(TYPE_AUTO);
1222 RECORD(TYPE_UNARY_TRANSFORM);
1223 RECORD(TYPE_ATOMIC);
1224 RECORD(TYPE_DECAYED);
1225 RECORD(TYPE_ADJUSTED);
1226 RECORD(TYPE_OBJC_TYPE_PARAM);
1227 RECORD(LOCAL_REDECLARATIONS);
1228 RECORD(DECL_TYPEDEF);
1229 RECORD(DECL_TYPEALIAS);
1230 RECORD(DECL_ENUM);
1231 RECORD(DECL_RECORD);
1232 RECORD(DECL_ENUM_CONSTANT);
1233 RECORD(DECL_FUNCTION);
1234 RECORD(DECL_OBJC_METHOD);
1235 RECORD(DECL_OBJC_INTERFACE);
1236 RECORD(DECL_OBJC_PROTOCOL);
1237 RECORD(DECL_OBJC_IVAR);
1238 RECORD(DECL_OBJC_AT_DEFS_FIELD);
1239 RECORD(DECL_OBJC_CATEGORY);
1240 RECORD(DECL_OBJC_CATEGORY_IMPL);
1241 RECORD(DECL_OBJC_IMPLEMENTATION);
1242 RECORD(DECL_OBJC_COMPATIBLE_ALIAS);
1243 RECORD(DECL_OBJC_PROPERTY);
1244 RECORD(DECL_OBJC_PROPERTY_IMPL);
1245 RECORD(DECL_FIELD);
1246 RECORD(DECL_MS_PROPERTY);
1247 RECORD(DECL_VAR);
1248 RECORD(DECL_IMPLICIT_PARAM);
1249 RECORD(DECL_PARM_VAR);
1250 RECORD(DECL_FILE_SCOPE_ASM);
1251 RECORD(DECL_BLOCK);
1252 RECORD(DECL_CONTEXT_LEXICAL);
1253 RECORD(DECL_CONTEXT_VISIBLE);
1254 RECORD(DECL_NAMESPACE);
1255 RECORD(DECL_NAMESPACE_ALIAS);
1256 RECORD(DECL_USING);
1257 RECORD(DECL_USING_SHADOW);
1258 RECORD(DECL_USING_DIRECTIVE);
1259 RECORD(DECL_UNRESOLVED_USING_VALUE);
1260 RECORD(DECL_UNRESOLVED_USING_TYPENAME);
1261 RECORD(DECL_LINKAGE_SPEC);
1262 RECORD(DECL_CXX_RECORD);
1263 RECORD(DECL_CXX_METHOD);
1264 RECORD(DECL_CXX_CONSTRUCTOR);
1265 RECORD(DECL_CXX_INHERITED_CONSTRUCTOR);
1266 RECORD(DECL_CXX_DESTRUCTOR);
1267 RECORD(DECL_CXX_CONVERSION);
1268 RECORD(DECL_ACCESS_SPEC);
1269 RECORD(DECL_FRIEND);
1270 RECORD(DECL_FRIEND_TEMPLATE);
1271 RECORD(DECL_CLASS_TEMPLATE);
1272 RECORD(DECL_CLASS_TEMPLATE_SPECIALIZATION);
1273 RECORD(DECL_CLASS_TEMPLATE_PARTIAL_SPECIALIZATION);
1274 RECORD(DECL_VAR_TEMPLATE);
1275 RECORD(DECL_VAR_TEMPLATE_SPECIALIZATION);
1276 RECORD(DECL_VAR_TEMPLATE_PARTIAL_SPECIALIZATION);
1277 RECORD(DECL_FUNCTION_TEMPLATE);
1278 RECORD(DECL_TEMPLATE_TYPE_PARM);
1279 RECORD(DECL_NON_TYPE_TEMPLATE_PARM);
1280 RECORD(DECL_TEMPLATE_TEMPLATE_PARM);
1281 RECORD(DECL_TYPE_ALIAS_TEMPLATE);
1282 RECORD(DECL_STATIC_ASSERT);
1283 RECORD(DECL_CXX_BASE_SPECIFIERS);
1284 RECORD(DECL_CXX_CTOR_INITIALIZERS);
1285 RECORD(DECL_INDIRECTFIELD);
1286 RECORD(DECL_EXPANDED_NON_TYPE_TEMPLATE_PARM_PACK);
1287 RECORD(DECL_EXPANDED_TEMPLATE_TEMPLATE_PARM_PACK);
1288 RECORD(DECL_CLASS_SCOPE_FUNCTION_SPECIALIZATION);
1289 RECORD(DECL_IMPORT);
1290 RECORD(DECL_OMP_THREADPRIVATE);
1291 RECORD(DECL_EMPTY);
1292 RECORD(DECL_OBJC_TYPE_PARAM);
1293 RECORD(DECL_OMP_CAPTUREDEXPR);
1294 RECORD(DECL_PRAGMA_COMMENT);
1295 RECORD(DECL_PRAGMA_DETECT_MISMATCH);
1296 RECORD(DECL_OMP_DECLARE_REDUCTION);
1297
1298 // Statements and Exprs can occur in the Decls and Types block.
1299 AddStmtsExprs(Stream, Record);
1300
1301 BLOCK(PREPROCESSOR_DETAIL_BLOCK);
1302 RECORD(PPD_MACRO_EXPANSION);
1303 RECORD(PPD_MACRO_DEFINITION);
1304 RECORD(PPD_INCLUSION_DIRECTIVE);
1305
1306 // Decls and Types block.
1307 BLOCK(EXTENSION_BLOCK);
1308 RECORD(EXTENSION_METADATA);
1309
1310 BLOCK(UNHASHED_CONTROL_BLOCK);
1311 RECORD(SIGNATURE);
1312 RECORD(DIAGNOSTIC_OPTIONS);
1313 RECORD(DIAG_PRAGMA_MAPPINGS);
1314
1315#undef RECORD
1316#undef BLOCK
1317 Stream.ExitBlock();
1318}
1319
1320/// \brief Prepares a path for being written to an AST file by converting it
1321/// to an absolute path and removing nested './'s.
1322///
1323/// \return \c true if the path was changed.
1324static bool cleanPathForOutput(FileManager &FileMgr,
1325 SmallVectorImpl<char> &Path) {
1326 bool Changed = FileMgr.makeAbsolutePath(Path);
1327 return Changed | llvm::sys::path::remove_dots(Path);
1328}
1329
1330/// \brief Adjusts the given filename to only write out the portion of the
1331/// filename that is not part of the system root directory.
1332///
1333/// \param Filename the file name to adjust.
1334///
1335/// \param BaseDir When non-NULL, the PCH file is a relocatable AST file and
1336/// the returned filename will be adjusted by this root directory.
1337///
1338/// \returns either the original filename (if it needs no adjustment) or the
1339/// adjusted filename (which points into the @p Filename parameter).
1340static const char *
1341adjustFilenameForRelocatableAST(const char *Filename, StringRef BaseDir) {
1342 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1342, __extension__ __PRETTY_FUNCTION__))
;
1343
1344 if (BaseDir.empty())
1345 return Filename;
1346
1347 // Verify that the filename and the system root have the same prefix.
1348 unsigned Pos = 0;
1349 for (; Filename[Pos] && Pos < BaseDir.size(); ++Pos)
1350 if (Filename[Pos] != BaseDir[Pos])
1351 return Filename; // Prefixes don't match.
1352
1353 // We hit the end of the filename before we hit the end of the system root.
1354 if (!Filename[Pos])
1355 return Filename;
1356
1357 // If there's not a path separator at the end of the base directory nor
1358 // immediately after it, then this isn't within the base directory.
1359 if (!llvm::sys::path::is_separator(Filename[Pos])) {
1360 if (!llvm::sys::path::is_separator(BaseDir.back()))
1361 return Filename;
1362 } else {
1363 // If the file name has a '/' at the current position, skip over the '/'.
1364 // We distinguish relative paths from absolute paths by the
1365 // absence of '/' at the beginning of relative paths.
1366 //
1367 // FIXME: This is wrong. We distinguish them by asking if the path is
1368 // absolute, which isn't the same thing. And there might be multiple '/'s
1369 // in a row. Use a better mechanism to indicate whether we have emitted an
1370 // absolute or relative path.
1371 ++Pos;
1372 }
1373
1374 return Filename + Pos;
1375}
1376
1377ASTFileSignature ASTWriter::createSignature(StringRef Bytes) {
1378 // Calculate the hash till start of UNHASHED_CONTROL_BLOCK.
1379 llvm::SHA1 Hasher;
1380 Hasher.update(ArrayRef<uint8_t>(Bytes.bytes_begin(), Bytes.size()));
1381 auto Hash = Hasher.result();
1382
1383 // Convert to an array [5*i32].
1384 ASTFileSignature Signature;
1385 auto LShift = [&](unsigned char Val, unsigned Shift) {
1386 return (uint32_t)Val << Shift;
1387 };
1388 for (int I = 0; I != 5; ++I)
1389 Signature[I] = LShift(Hash[I * 4 + 0], 24) | LShift(Hash[I * 4 + 1], 16) |
1390 LShift(Hash[I * 4 + 2], 8) | LShift(Hash[I * 4 + 3], 0);
1391
1392 return Signature;
1393}
1394
1395ASTFileSignature ASTWriter::writeUnhashedControlBlock(Preprocessor &PP,
1396 ASTContext &Context) {
1397 // Flush first to prepare the PCM hash (signature).
1398 Stream.FlushToWord();
1399 auto StartOfUnhashedControl = Stream.GetCurrentBitNo() >> 3;
1400
1401 // Enter the block and prepare to write records.
1402 RecordData Record;
1403 Stream.EnterSubblock(UNHASHED_CONTROL_BLOCK_ID, 5);
1404
1405 // For implicit modules, write the hash of the PCM as its signature.
1406 ASTFileSignature Signature;
1407 if (WritingModule &&
1408 PP.getHeaderSearchInfo().getHeaderSearchOpts().ModulesHashContent) {
1409 Signature = createSignature(StringRef(Buffer.begin(), StartOfUnhashedControl));
1410 Record.append(Signature.begin(), Signature.end());
1411 Stream.EmitRecord(SIGNATURE, Record);
1412 Record.clear();
1413 }
1414
1415 // Diagnostic options.
1416 const auto &Diags = Context.getDiagnostics();
1417 const DiagnosticOptions &DiagOpts = Diags.getDiagnosticOptions();
1418#define DIAGOPT(Name, Bits, Default) Record.push_back(DiagOpts.Name);
1419#define ENUM_DIAGOPT(Name, Type, Bits, Default) \
1420 Record.push_back(static_cast<unsigned>(DiagOpts.get##Name()));
1421#include "clang/Basic/DiagnosticOptions.def"
1422 Record.push_back(DiagOpts.Warnings.size());
1423 for (unsigned I = 0, N = DiagOpts.Warnings.size(); I != N; ++I)
1424 AddString(DiagOpts.Warnings[I], Record);
1425 Record.push_back(DiagOpts.Remarks.size());
1426 for (unsigned I = 0, N = DiagOpts.Remarks.size(); I != N; ++I)
1427 AddString(DiagOpts.Remarks[I], Record);
1428 // Note: we don't serialize the log or serialization file names, because they
1429 // are generally transient files and will almost always be overridden.
1430 Stream.EmitRecord(DIAGNOSTIC_OPTIONS, Record);
1431
1432 // Write out the diagnostic/pragma mappings.
1433 WritePragmaDiagnosticMappings(Diags, /* IsModule = */ WritingModule);
1434
1435 // Leave the options block.
1436 Stream.ExitBlock();
1437 return Signature;
1438}
1439
1440/// \brief Write the control block.
1441void ASTWriter::WriteControlBlock(Preprocessor &PP, ASTContext &Context,
1442 StringRef isysroot,
1443 const std::string &OutputFile) {
1444 using namespace llvm;
1445
1446 Stream.EnterSubblock(CONTROL_BLOCK_ID, 5);
1447 RecordData Record;
1448
1449 // Metadata
1450 auto MetadataAbbrev = std::make_shared<BitCodeAbbrev>();
1451 MetadataAbbrev->Add(BitCodeAbbrevOp(METADATA));
1452 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Major
1453 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Minor
1454 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang maj.
1455 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 16)); // Clang min.
1456 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Relocatable
1457 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Timestamps
1458 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Errors
1459 MetadataAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // SVN branch/tag
1460 unsigned MetadataAbbrevCode = Stream.EmitAbbrev(std::move(MetadataAbbrev));
1461 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1462, __extension__ __PRETTY_FUNCTION__))
1462 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1462, __extension__ __PRETTY_FUNCTION__))
;
1463 {
1464 RecordData::value_type Record[] = {METADATA, VERSION_MAJOR, VERSION_MINOR,
1465 CLANG_VERSION_MAJOR7, CLANG_VERSION_MINOR0,
1466 !isysroot.empty(), IncludeTimestamps,
1467 ASTHasCompilerErrors};
1468 Stream.EmitRecordWithBlob(MetadataAbbrevCode, Record,
1469 getClangFullRepositoryVersion());
1470 }
1471
1472 if (WritingModule) {
1473 // Module name
1474 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1475 Abbrev->Add(BitCodeAbbrevOp(MODULE_NAME));
1476 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
1477 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1478 RecordData::value_type Record[] = {MODULE_NAME};
1479 Stream.EmitRecordWithBlob(AbbrevCode, Record, WritingModule->Name);
1480 }
1481
1482 if (WritingModule && WritingModule->Directory) {
1483 SmallString<128> BaseDir(WritingModule->Directory->getName());
1484 cleanPathForOutput(Context.getSourceManager().getFileManager(), BaseDir);
1485
1486 // If the home of the module is the current working directory, then we
1487 // want to pick up the cwd of the build process loading the module, not
1488 // our cwd, when we load this module.
1489 if (!PP.getHeaderSearchInfo()
1490 .getHeaderSearchOpts()
1491 .ModuleMapFileHomeIsCwd ||
1492 WritingModule->Directory->getName() != StringRef(".")) {
1493 // Module directory.
1494 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1495 Abbrev->Add(BitCodeAbbrevOp(MODULE_DIRECTORY));
1496 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Directory
1497 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1498
1499 RecordData::value_type Record[] = {MODULE_DIRECTORY};
1500 Stream.EmitRecordWithBlob(AbbrevCode, Record, BaseDir);
1501 }
1502
1503 // Write out all other paths relative to the base directory if possible.
1504 BaseDirectory.assign(BaseDir.begin(), BaseDir.end());
1505 } else if (!isysroot.empty()) {
1506 // Write out paths relative to the sysroot if possible.
1507 BaseDirectory = isysroot;
1508 }
1509
1510 // Module map file
1511 if (WritingModule && WritingModule->Kind == Module::ModuleMapModule) {
1512 Record.clear();
1513
1514 auto &Map = PP.getHeaderSearchInfo().getModuleMap();
1515 AddPath(WritingModule->PresumedModuleMapFile.empty()
1516 ? Map.getModuleMapFileForUniquing(WritingModule)->getName()
1517 : StringRef(WritingModule->PresumedModuleMapFile),
1518 Record);
1519
1520 // Additional module map files.
1521 if (auto *AdditionalModMaps =
1522 Map.getAdditionalModuleMapFiles(WritingModule)) {
1523 Record.push_back(AdditionalModMaps->size());
1524 for (const FileEntry *F : *AdditionalModMaps)
1525 AddPath(F->getName(), Record);
1526 } else {
1527 Record.push_back(0);
1528 }
1529
1530 Stream.EmitRecord(MODULE_MAP_FILE, Record);
1531 }
1532
1533 // Imports
1534 if (Chain) {
1535 serialization::ModuleManager &Mgr = Chain->getModuleManager();
1536 Record.clear();
1537
1538 for (ModuleFile &M : Mgr) {
1539 // Skip modules that weren't directly imported.
1540 if (!M.isDirectlyImported())
1541 continue;
1542
1543 Record.push_back((unsigned)M.Kind); // FIXME: Stable encoding
1544 AddSourceLocation(M.ImportLoc, Record);
1545
1546 // If we have calculated signature, there is no need to store
1547 // the size or timestamp.
1548 Record.push_back(M.Signature ? 0 : M.File->getSize());
1549 Record.push_back(M.Signature ? 0 : getTimestampForOutput(M.File));
1550
1551 for (auto I : M.Signature)
1552 Record.push_back(I);
1553
1554 AddString(M.ModuleName, Record);
1555 AddPath(M.FileName, Record);
1556 }
1557 Stream.EmitRecord(IMPORTS, Record);
1558 }
1559
1560 // Write the options block.
1561 Stream.EnterSubblock(OPTIONS_BLOCK_ID, 4);
1562
1563 // Language options.
1564 Record.clear();
1565 const LangOptions &LangOpts = Context.getLangOpts();
1566#define LANGOPT(Name, Bits, Default, Description) \
1567 Record.push_back(LangOpts.Name);
1568#define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
1569 Record.push_back(static_cast<unsigned>(LangOpts.get##Name()));
1570#include "clang/Basic/LangOptions.def"
1571#define SANITIZER(NAME, ID) \
1572 Record.push_back(LangOpts.Sanitize.has(SanitizerKind::ID));
1573#include "clang/Basic/Sanitizers.def"
1574
1575 Record.push_back(LangOpts.ModuleFeatures.size());
1576 for (StringRef Feature : LangOpts.ModuleFeatures)
1577 AddString(Feature, Record);
1578
1579 Record.push_back((unsigned) LangOpts.ObjCRuntime.getKind());
1580 AddVersionTuple(LangOpts.ObjCRuntime.getVersion(), Record);
1581
1582 AddString(LangOpts.CurrentModule, Record);
1583
1584 // Comment options.
1585 Record.push_back(LangOpts.CommentOpts.BlockCommandNames.size());
1586 for (const auto &I : LangOpts.CommentOpts.BlockCommandNames) {
1587 AddString(I, Record);
1588 }
1589 Record.push_back(LangOpts.CommentOpts.ParseAllComments);
1590
1591 // OpenMP offloading options.
1592 Record.push_back(LangOpts.OMPTargetTriples.size());
1593 for (auto &T : LangOpts.OMPTargetTriples)
1594 AddString(T.getTriple(), Record);
1595
1596 AddString(LangOpts.OMPHostIRFile, Record);
1597
1598 Stream.EmitRecord(LANGUAGE_OPTIONS, Record);
1599
1600 // Target options.
1601 Record.clear();
1602 const TargetInfo &Target = Context.getTargetInfo();
1603 const TargetOptions &TargetOpts = Target.getTargetOpts();
1604 AddString(TargetOpts.Triple, Record);
1605 AddString(TargetOpts.CPU, Record);
1606 AddString(TargetOpts.ABI, Record);
1607 Record.push_back(TargetOpts.FeaturesAsWritten.size());
1608 for (unsigned I = 0, N = TargetOpts.FeaturesAsWritten.size(); I != N; ++I) {
1609 AddString(TargetOpts.FeaturesAsWritten[I], Record);
1610 }
1611 Record.push_back(TargetOpts.Features.size());
1612 for (unsigned I = 0, N = TargetOpts.Features.size(); I != N; ++I) {
1613 AddString(TargetOpts.Features[I], Record);
1614 }
1615 Stream.EmitRecord(TARGET_OPTIONS, Record);
1616
1617 // File system options.
1618 Record.clear();
1619 const FileSystemOptions &FSOpts =
1620 Context.getSourceManager().getFileManager().getFileSystemOpts();
1621 AddString(FSOpts.WorkingDir, Record);
1622 Stream.EmitRecord(FILE_SYSTEM_OPTIONS, Record);
1623
1624 // Header search options.
1625 Record.clear();
1626 const HeaderSearchOptions &HSOpts
1627 = PP.getHeaderSearchInfo().getHeaderSearchOpts();
1628 AddString(HSOpts.Sysroot, Record);
1629
1630 // Include entries.
1631 Record.push_back(HSOpts.UserEntries.size());
1632 for (unsigned I = 0, N = HSOpts.UserEntries.size(); I != N; ++I) {
1633 const HeaderSearchOptions::Entry &Entry = HSOpts.UserEntries[I];
1634 AddString(Entry.Path, Record);
1635 Record.push_back(static_cast<unsigned>(Entry.Group));
1636 Record.push_back(Entry.IsFramework);
1637 Record.push_back(Entry.IgnoreSysRoot);
1638 }
1639
1640 // System header prefixes.
1641 Record.push_back(HSOpts.SystemHeaderPrefixes.size());
1642 for (unsigned I = 0, N = HSOpts.SystemHeaderPrefixes.size(); I != N; ++I) {
1643 AddString(HSOpts.SystemHeaderPrefixes[I].Prefix, Record);
1644 Record.push_back(HSOpts.SystemHeaderPrefixes[I].IsSystemHeader);
1645 }
1646
1647 AddString(HSOpts.ResourceDir, Record);
1648 AddString(HSOpts.ModuleCachePath, Record);
1649 AddString(HSOpts.ModuleUserBuildPath, Record);
1650 Record.push_back(HSOpts.DisableModuleHash);
1651 Record.push_back(HSOpts.ImplicitModuleMaps);
1652 Record.push_back(HSOpts.ModuleMapFileHomeIsCwd);
1653 Record.push_back(HSOpts.UseBuiltinIncludes);
1654 Record.push_back(HSOpts.UseStandardSystemIncludes);
1655 Record.push_back(HSOpts.UseStandardCXXIncludes);
1656 Record.push_back(HSOpts.UseLibcxx);
1657 // Write out the specific module cache path that contains the module files.
1658 AddString(PP.getHeaderSearchInfo().getModuleCachePath(), Record);
1659 Stream.EmitRecord(HEADER_SEARCH_OPTIONS, Record);
1660
1661 // Preprocessor options.
1662 Record.clear();
1663 const PreprocessorOptions &PPOpts = PP.getPreprocessorOpts();
1664
1665 // Macro definitions.
1666 Record.push_back(PPOpts.Macros.size());
1667 for (unsigned I = 0, N = PPOpts.Macros.size(); I != N; ++I) {
1668 AddString(PPOpts.Macros[I].first, Record);
1669 Record.push_back(PPOpts.Macros[I].second);
1670 }
1671
1672 // Includes
1673 Record.push_back(PPOpts.Includes.size());
1674 for (unsigned I = 0, N = PPOpts.Includes.size(); I != N; ++I)
1675 AddString(PPOpts.Includes[I], Record);
1676
1677 // Macro includes
1678 Record.push_back(PPOpts.MacroIncludes.size());
1679 for (unsigned I = 0, N = PPOpts.MacroIncludes.size(); I != N; ++I)
1680 AddString(PPOpts.MacroIncludes[I], Record);
1681
1682 Record.push_back(PPOpts.UsePredefines);
1683 // Detailed record is important since it is used for the module cache hash.
1684 Record.push_back(PPOpts.DetailedRecord);
1685 AddString(PPOpts.ImplicitPCHInclude, Record);
1686 AddString(PPOpts.ImplicitPTHInclude, Record);
1687 Record.push_back(static_cast<unsigned>(PPOpts.ObjCXXARCStandardLibrary));
1688 Stream.EmitRecord(PREPROCESSOR_OPTIONS, Record);
1689
1690 // Leave the options block.
1691 Stream.ExitBlock();
1692
1693 // Original file name and file ID
1694 SourceManager &SM = Context.getSourceManager();
1695 if (const FileEntry *MainFile = SM.getFileEntryForID(SM.getMainFileID())) {
1696 auto FileAbbrev = std::make_shared<BitCodeAbbrev>();
1697 FileAbbrev->Add(BitCodeAbbrevOp(ORIGINAL_FILE));
1698 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // File ID
1699 FileAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1700 unsigned FileAbbrevCode = Stream.EmitAbbrev(std::move(FileAbbrev));
1701
1702 Record.clear();
1703 Record.push_back(ORIGINAL_FILE);
1704 Record.push_back(SM.getMainFileID().getOpaqueValue());
1705 EmitRecordWithPath(FileAbbrevCode, Record, MainFile->getName());
1706 }
1707
1708 Record.clear();
1709 Record.push_back(SM.getMainFileID().getOpaqueValue());
1710 Stream.EmitRecord(ORIGINAL_FILE_ID, Record);
1711
1712 // Original PCH directory
1713 if (!OutputFile.empty() && OutputFile != "-") {
1714 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1715 Abbrev->Add(BitCodeAbbrevOp(ORIGINAL_PCH_DIR));
1716 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1717 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
1718
1719 SmallString<128> OutputPath(OutputFile);
1720
1721 SM.getFileManager().makeAbsolutePath(OutputPath);
1722 StringRef origDir = llvm::sys::path::parent_path(OutputPath);
1723
1724 RecordData::value_type Record[] = {ORIGINAL_PCH_DIR};
1725 Stream.EmitRecordWithBlob(AbbrevCode, Record, origDir);
1726 }
1727
1728 WriteInputFiles(Context.SourceMgr,
1729 PP.getHeaderSearchInfo().getHeaderSearchOpts(),
1730 PP.getLangOpts().Modules);
1731 Stream.ExitBlock();
1732}
1733
1734namespace {
1735
1736/// \brief An input file.
1737struct InputFileEntry {
1738 const FileEntry *File;
1739 bool IsSystemFile;
1740 bool IsTransient;
1741 bool BufferOverridden;
1742 bool IsTopLevelModuleMap;
1743};
1744
1745} // namespace
1746
1747void ASTWriter::WriteInputFiles(SourceManager &SourceMgr,
1748 HeaderSearchOptions &HSOpts,
1749 bool Modules) {
1750 using namespace llvm;
1751
1752 Stream.EnterSubblock(INPUT_FILES_BLOCK_ID, 4);
1753
1754 // Create input-file abbreviation.
1755 auto IFAbbrev = std::make_shared<BitCodeAbbrev>();
1756 IFAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE));
1757 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
1758 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 12)); // Size
1759 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 32)); // Modification time
1760 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Overridden
1761 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Transient
1762 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Module map
1763 IFAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // File name
1764 unsigned IFAbbrevCode = Stream.EmitAbbrev(std::move(IFAbbrev));
1765
1766 // Get all ContentCache objects for files, sorted by whether the file is a
1767 // system one or not. System files go at the back, users files at the front.
1768 std::deque<InputFileEntry> SortedFiles;
1769 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size(); I != N; ++I) {
1770 // Get this source location entry.
1771 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
1772 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 1772, __extension__ __PRETTY_FUNCTION__))
;
1773
1774 // We only care about file entries that were not overridden.
1775 if (!SLoc->isFile())
1776 continue;
1777 const SrcMgr::FileInfo &File = SLoc->getFile();
1778 const SrcMgr::ContentCache *Cache = File.getContentCache();
1779 if (!Cache->OrigEntry)
1780 continue;
1781
1782 InputFileEntry Entry;
1783 Entry.File = Cache->OrigEntry;
1784 Entry.IsSystemFile = Cache->IsSystemFile;
1785 Entry.IsTransient = Cache->IsTransient;
1786 Entry.BufferOverridden = Cache->BufferOverridden;
1787 Entry.IsTopLevelModuleMap = isModuleMap(File.getFileCharacteristic()) &&
1788 File.getIncludeLoc().isInvalid();
1789 if (Cache->IsSystemFile)
1790 SortedFiles.push_back(Entry);
1791 else
1792 SortedFiles.push_front(Entry);
1793 }
1794
1795 unsigned UserFilesNum = 0;
1796 // Write out all of the input files.
1797 std::vector<uint64_t> InputFileOffsets;
1798 for (const auto &Entry : SortedFiles) {
1799 uint32_t &InputFileID = InputFileIDs[Entry.File];
1800 if (InputFileID != 0)
1801 continue; // already recorded this file.
1802
1803 // Record this entry's offset.
1804 InputFileOffsets.push_back(Stream.GetCurrentBitNo());
1805
1806 InputFileID = InputFileOffsets.size();
1807
1808 if (!Entry.IsSystemFile)
1809 ++UserFilesNum;
1810
1811 // Emit size/modification time for this file.
1812 // And whether this file was overridden.
1813 RecordData::value_type Record[] = {
1814 INPUT_FILE,
1815 InputFileOffsets.size(),
1816 (uint64_t)Entry.File->getSize(),
1817 (uint64_t)getTimestampForOutput(Entry.File),
1818 Entry.BufferOverridden,
1819 Entry.IsTransient,
1820 Entry.IsTopLevelModuleMap};
1821
1822 EmitRecordWithPath(IFAbbrevCode, Record, Entry.File->getName());
1823 }
1824
1825 Stream.ExitBlock();
1826
1827 // Create input file offsets abbreviation.
1828 auto OffsetsAbbrev = std::make_shared<BitCodeAbbrev>();
1829 OffsetsAbbrev->Add(BitCodeAbbrevOp(INPUT_FILE_OFFSETS));
1830 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # input files
1831 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # non-system
1832 // input files
1833 OffsetsAbbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Array
1834 unsigned OffsetsAbbrevCode = Stream.EmitAbbrev(std::move(OffsetsAbbrev));
1835
1836 // Write input file offsets.
1837 RecordData::value_type Record[] = {INPUT_FILE_OFFSETS,
1838 InputFileOffsets.size(), UserFilesNum};
1839 Stream.EmitRecordWithBlob(OffsetsAbbrevCode, Record, bytes(InputFileOffsets));
1840}
1841
1842//===----------------------------------------------------------------------===//
1843// Source Manager Serialization
1844//===----------------------------------------------------------------------===//
1845
1846/// \brief Create an abbreviation for the SLocEntry that refers to a
1847/// file.
1848static unsigned CreateSLocFileAbbrev(llvm::BitstreamWriter &Stream) {
1849 using namespace llvm;
1850
1851 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1852 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_FILE_ENTRY));
1853 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1854 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1855 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1856 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1857 // FileEntry fields.
1858 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Input File ID
1859 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumCreatedFIDs
1860 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 24)); // FirstDeclIndex
1861 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // NumDecls
1862 return Stream.EmitAbbrev(std::move(Abbrev));
1863}
1864
1865/// \brief Create an abbreviation for the SLocEntry that refers to a
1866/// buffer.
1867static unsigned CreateSLocBufferAbbrev(llvm::BitstreamWriter &Stream) {
1868 using namespace llvm;
1869
1870 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1871 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_BUFFER_ENTRY));
1872 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1873 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Include location
1874 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 3)); // Characteristic
1875 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // Line directives
1876 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Buffer name blob
1877 return Stream.EmitAbbrev(std::move(Abbrev));
1878}
1879
1880/// \brief Create an abbreviation for the SLocEntry that refers to a
1881/// buffer's blob.
1882static unsigned CreateSLocBufferBlobAbbrev(llvm::BitstreamWriter &Stream,
1883 bool Compressed) {
1884 using namespace llvm;
1885
1886 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1887 Abbrev->Add(BitCodeAbbrevOp(Compressed ? SM_SLOC_BUFFER_BLOB_COMPRESSED
1888 : SM_SLOC_BUFFER_BLOB));
1889 if (Compressed)
1890 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Uncompressed size
1891 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Blob
1892 return Stream.EmitAbbrev(std::move(Abbrev));
1893}
1894
1895/// \brief Create an abbreviation for the SLocEntry that refers to a macro
1896/// expansion.
1897static unsigned CreateSLocExpansionAbbrev(llvm::BitstreamWriter &Stream) {
1898 using namespace llvm;
1899
1900 auto Abbrev = std::make_shared<BitCodeAbbrev>();
1901 Abbrev->Add(BitCodeAbbrevOp(SM_SLOC_EXPANSION_ENTRY));
1902 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Offset
1903 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Spelling location
1904 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // Start location
1905 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 8)); // End location
1906 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Token length
1907 return Stream.EmitAbbrev(std::move(Abbrev));
1908}
1909
1910namespace {
1911
1912 // Trait used for the on-disk hash table of header search information.
1913 class HeaderFileInfoTrait {
1914 ASTWriter &Writer;
1915
1916 // Keep track of the framework names we've used during serialization.
1917 SmallVector<char, 128> FrameworkStringData;
1918 llvm::StringMap<unsigned> FrameworkNameOffset;
1919
1920 public:
1921 HeaderFileInfoTrait(ASTWriter &Writer) : Writer(Writer) {}
1922
1923 struct key_type {
1924 StringRef Filename;
1925 off_t Size;
1926 time_t ModTime;
1927 };
1928 using key_type_ref = const key_type &;
1929
1930 using UnresolvedModule =
1931 llvm::PointerIntPair<Module *, 2, ModuleMap::ModuleHeaderRole>;
1932
1933 struct data_type {
1934 const HeaderFileInfo &HFI;
1935 ArrayRef<ModuleMap::KnownHeader> KnownHeaders;
1936 UnresolvedModule Unresolved;
1937 };
1938 using data_type_ref = const data_type &;
1939
1940 using hash_value_type = unsigned;
1941 using offset_type = unsigned;
1942
1943 hash_value_type ComputeHash(key_type_ref key) {
1944 // The hash is based only on size/time of the file, so that the reader can
1945 // match even when symlinking or excess path elements ("foo/../", "../")
1946 // change the form of the name. However, complete path is still the key.
1947 return llvm::hash_combine(key.Size, key.ModTime);
1948 }
1949
1950 std::pair<unsigned, unsigned>
1951 EmitKeyDataLength(raw_ostream& Out, key_type_ref key, data_type_ref Data) {
1952 using namespace llvm::support;
1953
1954 endian::Writer<little> LE(Out);
1955 unsigned KeyLen = key.Filename.size() + 1 + 8 + 8;
1956 LE.write<uint16_t>(KeyLen);
1957 unsigned DataLen = 1 + 2 + 4 + 4;
1958 for (auto ModInfo : Data.KnownHeaders)
1959 if (Writer.getLocalOrImportedSubmoduleID(ModInfo.getModule()))
1960 DataLen += 4;
1961 if (Data.Unresolved.getPointer())
1962 DataLen += 4;
1963 LE.write<uint8_t>(DataLen);
1964 return std::make_pair(KeyLen, DataLen);
1965 }
1966
1967 void EmitKey(raw_ostream& Out, key_type_ref key, unsigned KeyLen) {
1968 using namespace llvm::support;
1969
1970 endian::Writer<little> LE(Out);
1971 LE.write<uint64_t>(key.Size);
1972 KeyLen -= 8;
1973 LE.write<uint64_t>(key.ModTime);
1974 KeyLen -= 8;
1975 Out.write(key.Filename.data(), KeyLen);
1976 }
1977
1978 void EmitData(raw_ostream &Out, key_type_ref key,
1979 data_type_ref Data, unsigned DataLen) {
1980 using namespace llvm::support;
1981
1982 endian::Writer<little> LE(Out);
1983 uint64_t Start = Out.tell(); (void)Start;
1984
1985 unsigned char Flags = (Data.HFI.isImport << 5)
1986 | (Data.HFI.isPragmaOnce << 4)
1987 | (Data.HFI.DirInfo << 1)
1988 | Data.HFI.IndexHeaderMapHeader;
1989 LE.write<uint8_t>(Flags);
1990 LE.write<uint16_t>(Data.HFI.NumIncludes);
1991
1992 if (!Data.HFI.ControllingMacro)
1993 LE.write<uint32_t>(Data.HFI.ControllingMacroID);
1994 else
1995 LE.write<uint32_t>(Writer.getIdentifierRef(Data.HFI.ControllingMacro));
1996
1997 unsigned Offset = 0;
1998 if (!Data.HFI.Framework.empty()) {
1999 // If this header refers into a framework, save the framework name.
2000 llvm::StringMap<unsigned>::iterator Pos
2001 = FrameworkNameOffset.find(Data.HFI.Framework);
2002 if (Pos == FrameworkNameOffset.end()) {
2003 Offset = FrameworkStringData.size() + 1;
2004 FrameworkStringData.append(Data.HFI.Framework.begin(),
2005 Data.HFI.Framework.end());
2006 FrameworkStringData.push_back(0);
2007
2008 FrameworkNameOffset[Data.HFI.Framework] = Offset;
2009 } else
2010 Offset = Pos->second;
2011 }
2012 LE.write<uint32_t>(Offset);
2013
2014 auto EmitModule = [&](Module *M, ModuleMap::ModuleHeaderRole Role) {
2015 if (uint32_t ModID = Writer.getLocalOrImportedSubmoduleID(M)) {
2016 uint32_t Value = (ModID << 2) | (unsigned)Role;
2017 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2017, __extension__ __PRETTY_FUNCTION__))
;
2018 LE.write<uint32_t>(Value);
2019 }
2020 };
2021
2022 // FIXME: If the header is excluded, we should write out some
2023 // record of that fact.
2024 for (auto ModInfo : Data.KnownHeaders)
2025 EmitModule(ModInfo.getModule(), ModInfo.getRole());
2026 if (Data.Unresolved.getPointer())
2027 EmitModule(Data.Unresolved.getPointer(), Data.Unresolved.getInt());
2028
2029 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2029, __extension__ __PRETTY_FUNCTION__))
;
2030 }
2031
2032 const char *strings_begin() const { return FrameworkStringData.begin(); }
2033 const char *strings_end() const { return FrameworkStringData.end(); }
2034 };
2035
2036} // namespace
2037
2038/// \brief Write the header search block for the list of files that
2039///
2040/// \param HS The header search structure to save.
2041void ASTWriter::WriteHeaderSearch(const HeaderSearch &HS) {
2042 HeaderFileInfoTrait GeneratorTrait(*this);
2043 llvm::OnDiskChainedHashTableGenerator<HeaderFileInfoTrait> Generator;
2044 SmallVector<const char *, 4> SavedStrings;
2045 unsigned NumHeaderSearchEntries = 0;
2046
2047 // Find all unresolved headers for the current module. We generally will
2048 // have resolved them before we get here, but not necessarily: we might be
2049 // compiling a preprocessed module, where there is no requirement for the
2050 // original files to exist any more.
2051 const HeaderFileInfo Empty; // So we can take a reference.
2052 if (WritingModule) {
2053 llvm::SmallVector<Module *, 16> Worklist(1, WritingModule);
2054 while (!Worklist.empty()) {
2055 Module *M = Worklist.pop_back_val();
2056 if (!M->isAvailable())
2057 continue;
2058
2059 // Map to disk files where possible, to pick up any missing stat
2060 // information. This also means we don't need to check the unresolved
2061 // headers list when emitting resolved headers in the first loop below.
2062 // FIXME: It'd be preferable to avoid doing this if we were given
2063 // sufficient stat information in the module map.
2064 HS.getModuleMap().resolveHeaderDirectives(M);
2065
2066 // If the file didn't exist, we can still create a module if we were given
2067 // enough information in the module map.
2068 for (auto U : M->MissingHeaders) {
2069 // Check that we were given enough information to build a module
2070 // without this file existing on disk.
2071 if (!U.Size || (!U.ModTime && IncludeTimestamps)) {
2072 PP->Diag(U.FileNameLoc, diag::err_module_no_size_mtime_for_header)
2073 << WritingModule->getFullModuleName() << U.Size.hasValue()
2074 << U.FileName;
2075 continue;
2076 }
2077
2078 // Form the effective relative pathname for the file.
2079 SmallString<128> Filename(M->Directory->getName());
2080 llvm::sys::path::append(Filename, U.FileName);
2081 PreparePathForOutput(Filename);
2082
2083 StringRef FilenameDup = strdup(Filename.c_str());
2084 SavedStrings.push_back(FilenameDup.data());
2085
2086 HeaderFileInfoTrait::key_type Key = {
2087 FilenameDup, *U.Size, IncludeTimestamps ? *U.ModTime : 0
2088 };
2089 HeaderFileInfoTrait::data_type Data = {
2090 Empty, {}, {M, ModuleMap::headerKindToRole(U.Kind)}
2091 };
2092 // FIXME: Deal with cases where there are multiple unresolved header
2093 // directives in different submodules for the same header.
2094 Generator.insert(Key, Data, GeneratorTrait);
2095 ++NumHeaderSearchEntries;
2096 }
2097
2098 Worklist.append(M->submodule_begin(), M->submodule_end());
2099 }
2100 }
2101
2102 SmallVector<const FileEntry *, 16> FilesByUID;
2103 HS.getFileMgr().GetUniqueIDMapping(FilesByUID);
2104
2105 if (FilesByUID.size() > HS.header_file_size())
2106 FilesByUID.resize(HS.header_file_size());
2107
2108 for (unsigned UID = 0, LastUID = FilesByUID.size(); UID != LastUID; ++UID) {
2109 const FileEntry *File = FilesByUID[UID];
2110 if (!File)
2111 continue;
2112
2113 // Get the file info. This will load info from the external source if
2114 // necessary. Skip emitting this file if we have no information on it
2115 // as a header file (in which case HFI will be null) or if it hasn't
2116 // changed since it was loaded. Also skip it if it's for a modular header
2117 // from a different module; in that case, we rely on the module(s)
2118 // containing the header to provide this information.
2119 const HeaderFileInfo *HFI =
2120 HS.getExistingFileInfo(File, /*WantExternal*/!Chain);
2121 if (!HFI || (HFI->isModuleHeader && !HFI->isCompilingModuleHeader))
2122 continue;
2123
2124 // Massage the file path into an appropriate form.
2125 StringRef Filename = File->getName();
2126 SmallString<128> FilenameTmp(Filename);
2127 if (PreparePathForOutput(FilenameTmp)) {
2128 // If we performed any translation on the file name at all, we need to
2129 // save this string, since the generator will refer to it later.
2130 Filename = StringRef(strdup(FilenameTmp.c_str()));
2131 SavedStrings.push_back(Filename.data());
2132 }
2133
2134 HeaderFileInfoTrait::key_type Key = {
2135 Filename, File->getSize(), getTimestampForOutput(File)
2136 };
2137 HeaderFileInfoTrait::data_type Data = {
2138 *HFI, HS.getModuleMap().findAllModulesForHeader(File), {}
2139 };
2140 Generator.insert(Key, Data, GeneratorTrait);
2141 ++NumHeaderSearchEntries;
2142 }
2143
2144 // Create the on-disk hash table in a buffer.
2145 SmallString<4096> TableData;
2146 uint32_t BucketOffset;
2147 {
2148 using namespace llvm::support;
2149
2150 llvm::raw_svector_ostream Out(TableData);
2151 // Make sure that no bucket is at offset 0
2152 endian::Writer<little>(Out).write<uint32_t>(0);
2153 BucketOffset = Generator.Emit(Out, GeneratorTrait);
2154 }
2155
2156 // Create a blob abbreviation
2157 using namespace llvm;
2158
2159 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2160 Abbrev->Add(BitCodeAbbrevOp(HEADER_SEARCH_TABLE));
2161 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2162 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2163 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
2164 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2165 unsigned TableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2166
2167 // Write the header search table
2168 RecordData::value_type Record[] = {HEADER_SEARCH_TABLE, BucketOffset,
2169 NumHeaderSearchEntries, TableData.size()};
2170 TableData.append(GeneratorTrait.strings_begin(),GeneratorTrait.strings_end());
2171 Stream.EmitRecordWithBlob(TableAbbrev, Record, TableData);
2172
2173 // Free all of the strings we had to duplicate.
2174 for (unsigned I = 0, N = SavedStrings.size(); I != N; ++I)
2175 free(const_cast<char *>(SavedStrings[I]));
2176}
2177
2178static void emitBlob(llvm::BitstreamWriter &Stream, StringRef Blob,
2179 unsigned SLocBufferBlobCompressedAbbrv,
2180 unsigned SLocBufferBlobAbbrv) {
2181 using RecordDataType = ASTWriter::RecordData::value_type;
2182
2183 // Compress the buffer if possible. We expect that almost all PCM
2184 // consumers will not want its contents.
2185 SmallString<0> CompressedBuffer;
2186 if (llvm::zlib::isAvailable()) {
2187 llvm::Error E = llvm::zlib::compress(Blob.drop_back(1), CompressedBuffer);
2188 if (!E) {
2189 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB_COMPRESSED,
2190 Blob.size() - 1};
2191 Stream.EmitRecordWithBlob(SLocBufferBlobCompressedAbbrv, Record,
2192 CompressedBuffer);
2193 return;
2194 }
2195 llvm::consumeError(std::move(E));
2196 }
2197
2198 RecordDataType Record[] = {SM_SLOC_BUFFER_BLOB};
2199 Stream.EmitRecordWithBlob(SLocBufferBlobAbbrv, Record, Blob);
2200}
2201
2202/// \brief Writes the block containing the serialized form of the
2203/// source manager.
2204///
2205/// TODO: We should probably use an on-disk hash table (stored in a
2206/// blob), indexed based on the file name, so that we only create
2207/// entries for files that we actually need. In the common case (no
2208/// errors), we probably won't have to create file entries for any of
2209/// the files in the AST.
2210void ASTWriter::WriteSourceManagerBlock(SourceManager &SourceMgr,
2211 const Preprocessor &PP) {
2212 RecordData Record;
2213
2214 // Enter the source manager block.
2215 Stream.EnterSubblock(SOURCE_MANAGER_BLOCK_ID, 4);
2216
2217 // Abbreviations for the various kinds of source-location entries.
2218 unsigned SLocFileAbbrv = CreateSLocFileAbbrev(Stream);
2219 unsigned SLocBufferAbbrv = CreateSLocBufferAbbrev(Stream);
2220 unsigned SLocBufferBlobAbbrv = CreateSLocBufferBlobAbbrev(Stream, false);
2221 unsigned SLocBufferBlobCompressedAbbrv =
2222 CreateSLocBufferBlobAbbrev(Stream, true);
2223 unsigned SLocExpansionAbbrv = CreateSLocExpansionAbbrev(Stream);
2224
2225 // Write out the source location entry table. We skip the first
2226 // entry, which is always the same dummy entry.
2227 std::vector<uint32_t> SLocEntryOffsets;
2228 RecordData PreloadSLocs;
2229 SLocEntryOffsets.reserve(SourceMgr.local_sloc_entry_size() - 1);
2230 for (unsigned I = 1, N = SourceMgr.local_sloc_entry_size();
2231 I != N; ++I) {
2232 // Get this source location entry.
2233 const SrcMgr::SLocEntry *SLoc = &SourceMgr.getLocalSLocEntry(I);
2234 FileID FID = FileID::get(I);
2235 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2235, __extension__ __PRETTY_FUNCTION__))
;
2236
2237 // Record the offset of this source-location entry.
2238 SLocEntryOffsets.push_back(Stream.GetCurrentBitNo());
2239
2240 // Figure out which record code to use.
2241 unsigned Code;
2242 if (SLoc->isFile()) {
2243 const SrcMgr::ContentCache *Cache = SLoc->getFile().getContentCache();
2244 if (Cache->OrigEntry) {
2245 Code = SM_SLOC_FILE_ENTRY;
2246 } else
2247 Code = SM_SLOC_BUFFER_ENTRY;
2248 } else
2249 Code = SM_SLOC_EXPANSION_ENTRY;
2250 Record.clear();
2251 Record.push_back(Code);
2252
2253 // Starting offset of this entry within this module, so skip the dummy.
2254 Record.push_back(SLoc->getOffset() - 2);
2255 if (SLoc->isFile()) {
2256 const SrcMgr::FileInfo &File = SLoc->getFile();
2257 AddSourceLocation(File.getIncludeLoc(), Record);
2258 Record.push_back(File.getFileCharacteristic()); // FIXME: stable encoding
2259 Record.push_back(File.hasLineDirectives());
2260
2261 const SrcMgr::ContentCache *Content = File.getContentCache();
2262 bool EmitBlob = false;
2263 if (Content->OrigEntry) {
2264 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2265, __extension__ __PRETTY_FUNCTION__))
2265 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2265, __extension__ __PRETTY_FUNCTION__))
;
2266
2267 // The source location entry is a file. Emit input file ID.
2268 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2268, __extension__ __PRETTY_FUNCTION__))
;
2269 Record.push_back(InputFileIDs[Content->OrigEntry]);
2270
2271 Record.push_back(File.NumCreatedFIDs);
2272
2273 FileDeclIDsTy::iterator FDI = FileDeclIDs.find(FID);
2274 if (FDI != FileDeclIDs.end()) {
2275 Record.push_back(FDI->second->FirstDeclIndex);
2276 Record.push_back(FDI->second->DeclIDs.size());
2277 } else {
2278 Record.push_back(0);
2279 Record.push_back(0);
2280 }
2281
2282 Stream.EmitRecordWithAbbrev(SLocFileAbbrv, Record);
2283
2284 if (Content->BufferOverridden || Content->IsTransient)
2285 EmitBlob = true;
2286 } else {
2287 // The source location entry is a buffer. The blob associated
2288 // with this entry contains the contents of the buffer.
2289
2290 // We add one to the size so that we capture the trailing NULL
2291 // that is required by llvm::MemoryBuffer::getMemBuffer (on
2292 // the reader side).
2293 const llvm::MemoryBuffer *Buffer
2294 = Content->getBuffer(PP.getDiagnostics(), PP.getSourceManager());
2295 StringRef Name = Buffer->getBufferIdentifier();
2296 Stream.EmitRecordWithBlob(SLocBufferAbbrv, Record,
2297 StringRef(Name.data(), Name.size() + 1));
2298 EmitBlob = true;
2299
2300 if (Name == "<built-in>")
2301 PreloadSLocs.push_back(SLocEntryOffsets.size());
2302 }
2303
2304 if (EmitBlob) {
2305 // Include the implicit terminating null character in the on-disk buffer
2306 // if we're writing it uncompressed.
2307 const llvm::MemoryBuffer *Buffer =
2308 Content->getBuffer(PP.getDiagnostics(), PP.getSourceManager());
2309 StringRef Blob(Buffer->getBufferStart(), Buffer->getBufferSize() + 1);
2310 emitBlob(Stream, Blob, SLocBufferBlobCompressedAbbrv,
2311 SLocBufferBlobAbbrv);
2312 }
2313 } else {
2314 // The source location entry is a macro expansion.
2315 const SrcMgr::ExpansionInfo &Expansion = SLoc->getExpansion();
2316 AddSourceLocation(Expansion.getSpellingLoc(), Record);
2317 AddSourceLocation(Expansion.getExpansionLocStart(), Record);
2318 AddSourceLocation(Expansion.isMacroArgExpansion()
2319 ? SourceLocation()
2320 : Expansion.getExpansionLocEnd(),
2321 Record);
2322
2323 // Compute the token length for this macro expansion.
2324 unsigned NextOffset = SourceMgr.getNextLocalOffset();
2325 if (I + 1 != N)
2326 NextOffset = SourceMgr.getLocalSLocEntry(I + 1).getOffset();
2327 Record.push_back(NextOffset - SLoc->getOffset() - 1);
2328 Stream.EmitRecordWithAbbrev(SLocExpansionAbbrv, Record);
2329 }
2330 }
2331
2332 Stream.ExitBlock();
2333
2334 if (SLocEntryOffsets.empty())
2335 return;
2336
2337 // Write the source-location offsets table into the AST block. This
2338 // table is used for lazily loading source-location information.
2339 using namespace llvm;
2340
2341 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2342 Abbrev->Add(BitCodeAbbrevOp(SOURCE_LOCATION_OFFSETS));
2343 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // # of slocs
2344 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 16)); // total size
2345 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // offsets
2346 unsigned SLocOffsetsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2347 {
2348 RecordData::value_type Record[] = {
2349 SOURCE_LOCATION_OFFSETS, SLocEntryOffsets.size(),
2350 SourceMgr.getNextLocalOffset() - 1 /* skip dummy */};
2351 Stream.EmitRecordWithBlob(SLocOffsetsAbbrev, Record,
2352 bytes(SLocEntryOffsets));
2353 }
2354 // Write the source location entry preloads array, telling the AST
2355 // reader which source locations entries it should load eagerly.
2356 Stream.EmitRecord(SOURCE_LOCATION_PRELOADS, PreloadSLocs);
2357
2358 // Write the line table. It depends on remapping working, so it must come
2359 // after the source location offsets.
2360 if (SourceMgr.hasLineTable()) {
2361 LineTableInfo &LineTable = SourceMgr.getLineTable();
2362
2363 Record.clear();
2364
2365 // Emit the needed file names.
2366 llvm::DenseMap<int, int> FilenameMap;
2367 FilenameMap[-1] = -1; // For unspecified filenames.
2368 for (const auto &L : LineTable) {
2369 if (L.first.ID < 0)
2370 continue;
2371 for (auto &LE : L.second) {
2372 if (FilenameMap.insert(std::make_pair(LE.FilenameID,
2373 FilenameMap.size() - 1)).second)
2374 AddPath(LineTable.getFilename(LE.FilenameID), Record);
2375 }
2376 }
2377 Record.push_back(0);
2378
2379 // Emit the line entries
2380 for (const auto &L : LineTable) {
2381 // Only emit entries for local files.
2382 if (L.first.ID < 0)
2383 continue;
2384
2385 // Emit the file ID
2386 Record.push_back(L.first.ID);
2387
2388 // Emit the line entries
2389 Record.push_back(L.second.size());
2390 for (const auto &LE : L.second) {
2391 Record.push_back(LE.FileOffset);
2392 Record.push_back(LE.LineNo);
2393 Record.push_back(FilenameMap[LE.FilenameID]);
2394 Record.push_back((unsigned)LE.FileKind);
2395 Record.push_back(LE.IncludeOffset);
2396 }
2397 }
2398
2399 Stream.EmitRecord(SOURCE_MANAGER_LINE_TABLE, Record);
2400 }
2401}
2402
2403//===----------------------------------------------------------------------===//
2404// Preprocessor Serialization
2405//===----------------------------------------------------------------------===//
2406
2407static bool shouldIgnoreMacro(MacroDirective *MD, bool IsModule,
2408 const Preprocessor &PP) {
2409 if (MacroInfo *MI = MD->getMacroInfo())
2410 if (MI->isBuiltinMacro())
2411 return true;
2412
2413 if (IsModule) {
2414 SourceLocation Loc = MD->getLocation();
2415 if (Loc.isInvalid())
2416 return true;
2417 if (PP.getSourceManager().getFileID(Loc) == PP.getPredefinesFileID())
2418 return true;
2419 }
2420
2421 return false;
2422}
2423
2424/// \brief Writes the block containing the serialized form of the
2425/// preprocessor.
2426void ASTWriter::WritePreprocessor(const Preprocessor &PP, bool IsModule) {
2427 PreprocessingRecord *PPRec = PP.getPreprocessingRecord();
2428 if (PPRec)
2429 WritePreprocessorDetail(*PPRec);
2430
2431 RecordData Record;
2432 RecordData ModuleMacroRecord;
2433
2434 // If the preprocessor __COUNTER__ value has been bumped, remember it.
2435 if (PP.getCounterValue() != 0) {
2436 RecordData::value_type Record[] = {PP.getCounterValue()};
2437 Stream.EmitRecord(PP_COUNTER_VALUE, Record);
2438 }
2439
2440 if (PP.isRecordingPreamble() && PP.hasRecordedPreamble()) {
2441 assert(!IsModule)(static_cast <bool> (!IsModule) ? void (0) : __assert_fail
("!IsModule", "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2441, __extension__ __PRETTY_FUNCTION__))
;
2442 auto SkipInfo = PP.getPreambleSkipInfo();
2443 if (SkipInfo.hasValue()) {
2444 Record.push_back(true);
2445 AddSourceLocation(SkipInfo->HashTokenLoc, Record);
2446 AddSourceLocation(SkipInfo->IfTokenLoc, Record);
2447 Record.push_back(SkipInfo->FoundNonSkipPortion);
2448 Record.push_back(SkipInfo->FoundElse);
2449 AddSourceLocation(SkipInfo->ElseLoc, Record);
2450 } else {
2451 Record.push_back(false);
2452 }
2453 for (const auto &Cond : PP.getPreambleConditionalStack()) {
2454 AddSourceLocation(Cond.IfLoc, Record);
2455 Record.push_back(Cond.WasSkipping);
2456 Record.push_back(Cond.FoundNonSkip);
2457 Record.push_back(Cond.FoundElse);
2458 }
2459 Stream.EmitRecord(PP_CONDITIONAL_STACK, Record);
2460 Record.clear();
2461 }
2462
2463 // Enter the preprocessor block.
2464 Stream.EnterSubblock(PREPROCESSOR_BLOCK_ID, 3);
2465
2466 // If the AST file contains __DATE__ or __TIME__ emit a warning about this.
2467 // FIXME: Include a location for the use, and say which one was used.
2468 if (PP.SawDateOrTime())
2469 PP.Diag(SourceLocation(), diag::warn_module_uses_date_time) << IsModule;
2470
2471 // Loop over all the macro directives that are live at the end of the file,
2472 // emitting each to the PP section.
2473
2474 // Construct the list of identifiers with macro directives that need to be
2475 // serialized.
2476 SmallVector<const IdentifierInfo *, 128> MacroIdentifiers;
2477 for (auto &Id : PP.getIdentifierTable())
2478 if (Id.second->hadMacroDefinition() &&
2479 (!Id.second->isFromAST() ||
2480 Id.second->hasChangedSinceDeserialization()))
2481 MacroIdentifiers.push_back(Id.second);
2482 // Sort the set of macro definitions that need to be serialized by the
2483 // name of the macro, to provide a stable ordering.
2484 std::sort(MacroIdentifiers.begin(), MacroIdentifiers.end(),
2485 llvm::less_ptr<IdentifierInfo>());
2486
2487 // Emit the macro directives as a list and associate the offset with the
2488 // identifier they belong to.
2489 for (const IdentifierInfo *Name : MacroIdentifiers) {
2490 MacroDirective *MD = PP.getLocalMacroDirectiveHistory(Name);
2491 auto StartOffset = Stream.GetCurrentBitNo();
2492
2493 // Emit the macro directives in reverse source order.
2494 for (; MD; MD = MD->getPrevious()) {
2495 // Once we hit an ignored macro, we're done: the rest of the chain
2496 // will all be ignored macros.
2497 if (shouldIgnoreMacro(MD, IsModule, PP))
2498 break;
2499
2500 AddSourceLocation(MD->getLocation(), Record);
2501 Record.push_back(MD->getKind());
2502 if (auto *DefMD = dyn_cast<DefMacroDirective>(MD)) {
2503 Record.push_back(getMacroRef(DefMD->getInfo(), Name));
2504 } else if (auto *VisMD = dyn_cast<VisibilityMacroDirective>(MD)) {
2505 Record.push_back(VisMD->isPublic());
2506 }
2507 }
2508
2509 // Write out any exported module macros.
2510 bool EmittedModuleMacros = false;
2511 // We write out exported module macros for PCH as well.
2512 auto Leafs = PP.getLeafModuleMacros(Name);
2513 SmallVector<ModuleMacro*, 8> Worklist(Leafs.begin(), Leafs.end());
2514 llvm::DenseMap<ModuleMacro*, unsigned> Visits;
2515 while (!Worklist.empty()) {
2516 auto *Macro = Worklist.pop_back_val();
2517
2518 // Emit a record indicating this submodule exports this macro.
2519 ModuleMacroRecord.push_back(
2520 getSubmoduleID(Macro->getOwningModule()));
2521 ModuleMacroRecord.push_back(getMacroRef(Macro->getMacroInfo(), Name));
2522 for (auto *M : Macro->overrides())
2523 ModuleMacroRecord.push_back(getSubmoduleID(M->getOwningModule()));
2524
2525 Stream.EmitRecord(PP_MODULE_MACRO, ModuleMacroRecord);
2526 ModuleMacroRecord.clear();
2527
2528 // Enqueue overridden macros once we've visited all their ancestors.
2529 for (auto *M : Macro->overrides())
2530 if (++Visits[M] == M->getNumOverridingMacros())
2531 Worklist.push_back(M);
2532
2533 EmittedModuleMacros = true;
2534 }
2535
2536 if (Record.empty() && !EmittedModuleMacros)
2537 continue;
2538
2539 IdentMacroDirectivesOffsetMap[Name] = StartOffset;
2540 Stream.EmitRecord(PP_MACRO_DIRECTIVE_HISTORY, Record);
2541 Record.clear();
2542 }
2543
2544 /// \brief Offsets of each of the macros into the bitstream, indexed by
2545 /// the local macro ID
2546 ///
2547 /// For each identifier that is associated with a macro, this map
2548 /// provides the offset into the bitstream where that macro is
2549 /// defined.
2550 std::vector<uint32_t> MacroOffsets;
2551
2552 for (unsigned I = 0, N = MacroInfosToEmit.size(); I != N; ++I) {
2553 const IdentifierInfo *Name = MacroInfosToEmit[I].Name;
2554 MacroInfo *MI = MacroInfosToEmit[I].MI;
2555 MacroID ID = MacroInfosToEmit[I].ID;
2556
2557 if (ID < FirstMacroID) {
2558 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2558, __extension__ __PRETTY_FUNCTION__))
;
2559 continue;
2560 }
2561
2562 // Record the local offset of this macro.
2563 unsigned Index = ID - FirstMacroID;
2564 if (Index == MacroOffsets.size())
2565 MacroOffsets.push_back(Stream.GetCurrentBitNo());
2566 else {
2567 if (Index > MacroOffsets.size())
2568 MacroOffsets.resize(Index + 1);
2569
2570 MacroOffsets[Index] = Stream.GetCurrentBitNo();
2571 }
2572
2573 AddIdentifierRef(Name, Record);
2574 AddSourceLocation(MI->getDefinitionLoc(), Record);
2575 AddSourceLocation(MI->getDefinitionEndLoc(), Record);
2576 Record.push_back(MI->isUsed());
2577 Record.push_back(MI->isUsedForHeaderGuard());
2578 unsigned Code;
2579 if (MI->isObjectLike()) {
2580 Code = PP_MACRO_OBJECT_LIKE;
2581 } else {
2582 Code = PP_MACRO_FUNCTION_LIKE;
2583
2584 Record.push_back(MI->isC99Varargs());
2585 Record.push_back(MI->isGNUVarargs());
2586 Record.push_back(MI->hasCommaPasting());
2587 Record.push_back(MI->getNumParams());
2588 for (const IdentifierInfo *Param : MI->params())
2589 AddIdentifierRef(Param, Record);
2590 }
2591
2592 // If we have a detailed preprocessing record, record the macro definition
2593 // ID that corresponds to this macro.
2594 if (PPRec)
2595 Record.push_back(MacroDefinitions[PPRec->findMacroDefinition(MI)]);
2596
2597 Stream.EmitRecord(Code, Record);
2598 Record.clear();
2599
2600 // Emit the tokens array.
2601 for (unsigned TokNo = 0, e = MI->getNumTokens(); TokNo != e; ++TokNo) {
2602 // Note that we know that the preprocessor does not have any annotation
2603 // tokens in it because they are created by the parser, and thus can't
2604 // be in a macro definition.
2605 const Token &Tok = MI->getReplacementToken(TokNo);
2606 AddToken(Tok, Record);
2607 Stream.EmitRecord(PP_TOKEN, Record);
2608 Record.clear();
2609 }
2610 ++NumMacros;
2611 }
2612
2613 Stream.ExitBlock();
2614
2615 // Write the offsets table for macro IDs.
2616 using namespace llvm;
2617
2618 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2619 Abbrev->Add(BitCodeAbbrevOp(MACRO_OFFSET));
2620 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of macros
2621 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
2622 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2623
2624 unsigned MacroOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2625 {
2626 RecordData::value_type Record[] = {MACRO_OFFSET, MacroOffsets.size(),
2627 FirstMacroID - NUM_PREDEF_MACRO_IDS};
2628 Stream.EmitRecordWithBlob(MacroOffsetAbbrev, Record, bytes(MacroOffsets));
2629 }
2630}
2631
2632void ASTWriter::WritePreprocessorDetail(PreprocessingRecord &PPRec) {
2633 if (PPRec.local_begin() == PPRec.local_end())
2634 return;
2635
2636 SmallVector<PPEntityOffset, 64> PreprocessedEntityOffsets;
2637
2638 // Enter the preprocessor block.
2639 Stream.EnterSubblock(PREPROCESSOR_DETAIL_BLOCK_ID, 3);
2640
2641 // If the preprocessor has a preprocessing record, emit it.
2642 unsigned NumPreprocessingRecords = 0;
2643 using namespace llvm;
2644
2645 // Set up the abbreviation for
2646 unsigned InclusionAbbrev = 0;
2647 {
2648 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2649 Abbrev->Add(BitCodeAbbrevOp(PPD_INCLUSION_DIRECTIVE));
2650 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // filename length
2651 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // in quotes
2652 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // kind
2653 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // imported module
2654 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2655 InclusionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2656 }
2657
2658 unsigned FirstPreprocessorEntityID
2659 = (Chain ? PPRec.getNumLoadedPreprocessedEntities() : 0)
2660 + NUM_PREDEF_PP_ENTITY_IDS;
2661 unsigned NextPreprocessorEntityID = FirstPreprocessorEntityID;
2662 RecordData Record;
2663 for (PreprocessingRecord::iterator E = PPRec.local_begin(),
2664 EEnd = PPRec.local_end();
2665 E != EEnd;
2666 (void)++E, ++NumPreprocessingRecords, ++NextPreprocessorEntityID) {
2667 Record.clear();
2668
2669 PreprocessedEntityOffsets.push_back(
2670 PPEntityOffset((*E)->getSourceRange(), Stream.GetCurrentBitNo()));
2671
2672 if (auto *MD = dyn_cast<MacroDefinitionRecord>(*E)) {
2673 // Record this macro definition's ID.
2674 MacroDefinitions[MD] = NextPreprocessorEntityID;
2675
2676 AddIdentifierRef(MD->getName(), Record);
2677 Stream.EmitRecord(PPD_MACRO_DEFINITION, Record);
2678 continue;
2679 }
2680
2681 if (auto *ME = dyn_cast<MacroExpansion>(*E)) {
2682 Record.push_back(ME->isBuiltinMacro());
2683 if (ME->isBuiltinMacro())
2684 AddIdentifierRef(ME->getName(), Record);
2685 else
2686 Record.push_back(MacroDefinitions[ME->getDefinition()]);
2687 Stream.EmitRecord(PPD_MACRO_EXPANSION, Record);
2688 continue;
2689 }
2690
2691 if (auto *ID = dyn_cast<InclusionDirective>(*E)) {
2692 Record.push_back(PPD_INCLUSION_DIRECTIVE);
2693 Record.push_back(ID->getFileName().size());
2694 Record.push_back(ID->wasInQuotes());
2695 Record.push_back(static_cast<unsigned>(ID->getKind()));
2696 Record.push_back(ID->importedModule());
2697 SmallString<64> Buffer;
2698 Buffer += ID->getFileName();
2699 // Check that the FileEntry is not null because it was not resolved and
2700 // we create a PCH even with compiler errors.
2701 if (ID->getFile())
2702 Buffer += ID->getFile()->getName();
2703 Stream.EmitRecordWithBlob(InclusionAbbrev, Record, Buffer);
2704 continue;
2705 }
2706
2707 llvm_unreachable("Unhandled PreprocessedEntity in ASTWriter")::llvm::llvm_unreachable_internal("Unhandled PreprocessedEntity in ASTWriter"
, "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2707)
;
2708 }
2709 Stream.ExitBlock();
2710
2711 // Write the offsets table for the preprocessing record.
2712 if (NumPreprocessingRecords > 0) {
2713 assert(PreprocessedEntityOffsets.size() == NumPreprocessingRecords)(static_cast <bool> (PreprocessedEntityOffsets.size() ==
NumPreprocessingRecords) ? void (0) : __assert_fail ("PreprocessedEntityOffsets.size() == NumPreprocessingRecords"
, "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2713, __extension__ __PRETTY_FUNCTION__))
;
2714
2715 // Write the offsets table for identifier IDs.
2716 using namespace llvm;
2717
2718 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2719 Abbrev->Add(BitCodeAbbrevOp(PPD_ENTITIES_OFFSETS));
2720 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first pp entity
2721 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2722 unsigned PPEOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2723
2724 RecordData::value_type Record[] = {PPD_ENTITIES_OFFSETS,
2725 FirstPreprocessorEntityID -
2726 NUM_PREDEF_PP_ENTITY_IDS};
2727 Stream.EmitRecordWithBlob(PPEOffsetAbbrev, Record,
2728 bytes(PreprocessedEntityOffsets));
2729 }
2730
2731 // Write the skipped region table for the preprocessing record.
2732 ArrayRef<SourceRange> SkippedRanges = PPRec.getSkippedRanges();
2733 if (SkippedRanges.size() > 0) {
2734 std::vector<PPSkippedRange> SerializedSkippedRanges;
2735 SerializedSkippedRanges.reserve(SkippedRanges.size());
2736 for (auto const& Range : SkippedRanges)
2737 SerializedSkippedRanges.emplace_back(Range);
2738
2739 using namespace llvm;
2740 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2741 Abbrev->Add(BitCodeAbbrevOp(PPD_SKIPPED_RANGES));
2742 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
2743 unsigned PPESkippedRangeAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2744
2745 Record.clear();
2746 Record.push_back(PPD_SKIPPED_RANGES);
2747 Stream.EmitRecordWithBlob(PPESkippedRangeAbbrev, Record,
2748 bytes(SerializedSkippedRanges));
2749 }
2750}
2751
2752unsigned ASTWriter::getLocalOrImportedSubmoduleID(Module *Mod) {
2753 if (!Mod)
2754 return 0;
2755
2756 llvm::DenseMap<Module *, unsigned>::iterator Known = SubmoduleIDs.find(Mod);
2757 if (Known != SubmoduleIDs.end())
2758 return Known->second;
2759
2760 auto *Top = Mod->getTopLevelModule();
2761 if (Top != WritingModule &&
2762 (getLangOpts().CompilingPCH ||
2763 !Top->fullModuleNameIs(StringRef(getLangOpts().CurrentModule))))
2764 return 0;
2765
2766 return SubmoduleIDs[Mod] = NextSubmoduleID++;
2767}
2768
2769unsigned ASTWriter::getSubmoduleID(Module *Mod) {
2770 // FIXME: This can easily happen, if we have a reference to a submodule that
2771 // did not result in us loading a module file for that submodule. For
2772 // instance, a cross-top-level-module 'conflict' declaration will hit this.
2773 unsigned ID = getLocalOrImportedSubmoduleID(Mod);
2774 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2775, __extension__ __PRETTY_FUNCTION__))
2775 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2775, __extension__ __PRETTY_FUNCTION__))
;
2776 return ID;
2777}
2778
2779/// \brief Compute the number of modules within the given tree (including the
2780/// given module).
2781static unsigned getNumberOfModules(Module *Mod) {
2782 unsigned ChildModules = 0;
2783 for (auto Sub = Mod->submodule_begin(), SubEnd = Mod->submodule_end();
2784 Sub != SubEnd; ++Sub)
2785 ChildModules += getNumberOfModules(*Sub);
2786
2787 return ChildModules + 1;
2788}
2789
2790void ASTWriter::WriteSubmodules(Module *WritingModule) {
2791 // Enter the submodule description block.
2792 Stream.EnterSubblock(SUBMODULE_BLOCK_ID, /*bits for abbreviations*/5);
2793
2794 // Write the abbreviations needed for the submodules block.
2795 using namespace llvm;
2796
2797 auto Abbrev = std::make_shared<BitCodeAbbrev>();
2798 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_DEFINITION));
2799 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // ID
2800 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Parent
2801 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 2)); // Kind
2802 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2803 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExplicit
2804 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsSystem
2805 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsExternC
2806 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferSubmodules...
2807 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExplicit...
2808 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // InferExportWild...
2809 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // ConfigMacrosExh...
2810 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2811 unsigned DefinitionAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2812
2813 Abbrev = std::make_shared<BitCodeAbbrev>();
2814 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_HEADER));
2815 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2816 unsigned UmbrellaAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2817
2818 Abbrev = std::make_shared<BitCodeAbbrev>();
2819 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_HEADER));
2820 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2821 unsigned HeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2822
2823 Abbrev = std::make_shared<BitCodeAbbrev>();
2824 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TOPHEADER));
2825 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2826 unsigned TopHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2827
2828 Abbrev = std::make_shared<BitCodeAbbrev>();
2829 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_UMBRELLA_DIR));
2830 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2831 unsigned UmbrellaDirAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2832
2833 Abbrev = std::make_shared<BitCodeAbbrev>();
2834 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_REQUIRES));
2835 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // State
2836 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Feature
2837 unsigned RequiresAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2838
2839 Abbrev = std::make_shared<BitCodeAbbrev>();
2840 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXCLUDED_HEADER));
2841 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2842 unsigned ExcludedHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2843
2844 Abbrev = std::make_shared<BitCodeAbbrev>();
2845 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_TEXTUAL_HEADER));
2846 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2847 unsigned TextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2848
2849 Abbrev = std::make_shared<BitCodeAbbrev>();
2850 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_HEADER));
2851 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2852 unsigned PrivateHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2853
2854 Abbrev = std::make_shared<BitCodeAbbrev>();
2855 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_PRIVATE_TEXTUAL_HEADER));
2856 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2857 unsigned PrivateTextualHeaderAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2858
2859 Abbrev = std::make_shared<BitCodeAbbrev>();
2860 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_LINK_LIBRARY));
2861 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 1)); // IsFramework
2862 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Name
2863 unsigned LinkLibraryAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2864
2865 Abbrev = std::make_shared<BitCodeAbbrev>();
2866 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFIG_MACRO));
2867 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2868 unsigned ConfigMacroAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2869
2870 Abbrev = std::make_shared<BitCodeAbbrev>();
2871 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_CONFLICT));
2872 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // Other module
2873 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Message
2874 unsigned ConflictAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2875
2876 Abbrev = std::make_shared<BitCodeAbbrev>();
2877 Abbrev->Add(BitCodeAbbrevOp(SUBMODULE_EXPORT_AS));
2878 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // Macro name
2879 unsigned ExportAsAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
2880
2881 // Write the submodule metadata block.
2882 RecordData::value_type Record[] = {
2883 getNumberOfModules(WritingModule),
2884 FirstSubmoduleID - NUM_PREDEF_SUBMODULE_IDS};
2885 Stream.EmitRecord(SUBMODULE_METADATA, Record);
2886
2887 // Write all of the submodules.
2888 std::queue<Module *> Q;
2889 Q.push(WritingModule);
2890 while (!Q.empty()) {
2891 Module *Mod = Q.front();
2892 Q.pop();
2893 unsigned ID = getSubmoduleID(Mod);
2894
2895 uint64_t ParentID = 0;
2896 if (Mod->Parent) {
2897 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 2897, __extension__ __PRETTY_FUNCTION__))
;
2898 ParentID = SubmoduleIDs[Mod->Parent];
2899 }
2900
2901 // Emit the definition of the block.
2902 {
2903 RecordData::value_type Record[] = {SUBMODULE_DEFINITION,
2904 ID,
2905 ParentID,
2906 (RecordData::value_type)Mod->Kind,
2907 Mod->IsFramework,
2908 Mod->IsExplicit,
2909 Mod->IsSystem,
2910 Mod->IsExternC,
2911 Mod->InferSubmodules,
2912 Mod->InferExplicitSubmodules,
2913 Mod->InferExportWildcard,
2914 Mod->ConfigMacrosExhaustive};
2915 Stream.EmitRecordWithBlob(DefinitionAbbrev, Record, Mod->Name);
2916 }
2917
2918 // Emit the requirements.
2919 for (const auto &R : Mod->Requirements) {
2920 RecordData::value_type Record[] = {SUBMODULE_REQUIRES, R.second};
2921 Stream.EmitRecordWithBlob(RequiresAbbrev, Record, R.first);
2922 }
2923
2924 // Emit the umbrella header, if there is one.
2925 if (auto UmbrellaHeader = Mod->getUmbrellaHeader()) {
2926 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_HEADER};
2927 Stream.EmitRecordWithBlob(UmbrellaAbbrev, Record,
2928 UmbrellaHeader.NameAsWritten);
2929 } else if (auto UmbrellaDir = Mod->getUmbrellaDir()) {
2930 RecordData::value_type Record[] = {SUBMODULE_UMBRELLA_DIR};
2931 Stream.EmitRecordWithBlob(UmbrellaDirAbbrev, Record,
2932 UmbrellaDir.NameAsWritten);
2933 }
2934
2935 // Emit the headers.
2936 struct {
2937 unsigned RecordKind;
2938 unsigned Abbrev;
2939 Module::HeaderKind HeaderKind;
2940 } HeaderLists[] = {
2941 {SUBMODULE_HEADER, HeaderAbbrev, Module::HK_Normal},
2942 {SUBMODULE_TEXTUAL_HEADER, TextualHeaderAbbrev, Module::HK_Textual},
2943 {SUBMODULE_PRIVATE_HEADER, PrivateHeaderAbbrev, Module::HK_Private},
2944 {SUBMODULE_PRIVATE_TEXTUAL_HEADER, PrivateTextualHeaderAbbrev,
2945 Module::HK_PrivateTextual},
2946 {SUBMODULE_EXCLUDED_HEADER, ExcludedHeaderAbbrev, Module::HK_Excluded}
2947 };
2948 for (auto &HL : HeaderLists) {
2949 RecordData::value_type Record[] = {HL.RecordKind};
2950 for (auto &H : Mod->Headers[HL.HeaderKind])
2951 Stream.EmitRecordWithBlob(HL.Abbrev, Record, H.NameAsWritten);
2952 }
2953
2954 // Emit the top headers.
2955 {
2956 auto TopHeaders = Mod->getTopHeaders(PP->getFileManager());
2957 RecordData::value_type Record[] = {SUBMODULE_TOPHEADER};
2958 for (auto *H : TopHeaders)
2959 Stream.EmitRecordWithBlob(TopHeaderAbbrev, Record, H->getName());
2960 }
2961
2962 // Emit the imports.
2963 if (!Mod->Imports.empty()) {
2964 RecordData Record;
2965 for (auto *I : Mod->Imports)
2966 Record.push_back(getSubmoduleID(I));
2967 Stream.EmitRecord(SUBMODULE_IMPORTS, Record);
2968 }
2969
2970 // Emit the exports.
2971 if (!Mod->Exports.empty()) {
2972 RecordData Record;
2973 for (const auto &E : Mod->Exports) {
2974 // FIXME: This may fail; we don't require that all exported modules
2975 // are local or imported.
2976 Record.push_back(getSubmoduleID(E.getPointer()));
2977 Record.push_back(E.getInt());
2978 }
2979 Stream.EmitRecord(SUBMODULE_EXPORTS, Record);
2980 }
2981
2982 //FIXME: How do we emit the 'use'd modules? They may not be submodules.
2983 // Might be unnecessary as use declarations are only used to build the
2984 // module itself.
2985
2986 // Emit the link libraries.
2987 for (const auto &LL : Mod->LinkLibraries) {
2988 RecordData::value_type Record[] = {SUBMODULE_LINK_LIBRARY,
2989 LL.IsFramework};
2990 Stream.EmitRecordWithBlob(LinkLibraryAbbrev, Record, LL.Library);
2991 }
2992
2993 // Emit the conflicts.
2994 for (const auto &C : Mod->Conflicts) {
2995 // FIXME: This may fail; we don't require that all conflicting modules
2996 // are local or imported.
2997 RecordData::value_type Record[] = {SUBMODULE_CONFLICT,
2998 getSubmoduleID(C.Other)};
2999 Stream.EmitRecordWithBlob(ConflictAbbrev, Record, C.Message);
3000 }
3001
3002 // Emit the configuration macros.
3003 for (const auto &CM : Mod->ConfigMacros) {
3004 RecordData::value_type Record[] = {SUBMODULE_CONFIG_MACRO};
3005 Stream.EmitRecordWithBlob(ConfigMacroAbbrev, Record, CM);
3006 }
3007
3008 // Emit the initializers, if any.
3009 RecordData Inits;
3010 for (Decl *D : Context->getModuleInitializers(Mod))
3011 Inits.push_back(GetDeclRef(D));
3012 if (!Inits.empty())
3013 Stream.EmitRecord(SUBMODULE_INITIALIZERS, Inits);
3014
3015 // Emit the name of the re-exported module, if any.
3016 if (!Mod->ExportAsModule.empty()) {
3017 RecordData::value_type Record[] = {SUBMODULE_EXPORT_AS};
3018 Stream.EmitRecordWithBlob(ExportAsAbbrev, Record, Mod->ExportAsModule);
3019 }
3020
3021 // Queue up the submodules of this module.
3022 for (auto *M : Mod->submodules())
3023 Q.push(M);
3024 }
3025
3026 Stream.ExitBlock();
3027
3028 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3031, __extension__ __PRETTY_FUNCTION__))
3029 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3031, __extension__ __PRETTY_FUNCTION__))
3030 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3031, __extension__ __PRETTY_FUNCTION__))
3031 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3031, __extension__ __PRETTY_FUNCTION__))
;
3032}
3033
3034void ASTWriter::WritePragmaDiagnosticMappings(const DiagnosticsEngine &Diag,
3035 bool isModule) {
3036 llvm::SmallDenseMap<const DiagnosticsEngine::DiagState *, unsigned, 64>
3037 DiagStateIDMap;
3038 unsigned CurrID = 0;
3039 RecordData Record;
3040
3041 auto EncodeDiagStateFlags =
3042 [](const DiagnosticsEngine::DiagState *DS) -> unsigned {
3043 unsigned Result = (unsigned)DS->ExtBehavior;
3044 for (unsigned Val :
3045 {(unsigned)DS->IgnoreAllWarnings, (unsigned)DS->EnableAllWarnings,
3046 (unsigned)DS->WarningsAsErrors, (unsigned)DS->ErrorsAsFatal,
3047 (unsigned)DS->SuppressSystemWarnings})
3048 Result = (Result << 1) | Val;
3049 return Result;
3050 };
3051
3052 unsigned Flags = EncodeDiagStateFlags(Diag.DiagStatesByLoc.FirstDiagState);
3053 Record.push_back(Flags);
3054
3055 auto AddDiagState = [&](const DiagnosticsEngine::DiagState *State,
3056 bool IncludeNonPragmaStates) {
3057 // Ensure that the diagnostic state wasn't modified since it was created.
3058 // We will not correctly round-trip this information otherwise.
3059 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3060, __extension__ __PRETTY_FUNCTION__))
3060 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3060, __extension__ __PRETTY_FUNCTION__))
;
3061
3062 unsigned &DiagStateID = DiagStateIDMap[State];
3063 Record.push_back(DiagStateID);
3064
3065 if (DiagStateID == 0) {
3066 DiagStateID = ++CurrID;
3067
3068 // Add a placeholder for the number of mappings.
3069 auto SizeIdx = Record.size();
3070 Record.emplace_back();
3071 for (const auto &I : *State) {
3072 if (I.second.isPragma() || IncludeNonPragmaStates) {
3073 Record.push_back(I.first);
3074 Record.push_back(I.second.serialize());
3075 }
3076 }
3077 // Update the placeholder.
3078 Record[SizeIdx] = (Record.size() - SizeIdx) / 2;
3079 }
3080 };
3081
3082 AddDiagState(Diag.DiagStatesByLoc.FirstDiagState, isModule);
3083
3084 // Reserve a spot for the number of locations with state transitions.
3085 auto NumLocationsIdx = Record.size();
3086 Record.emplace_back();
3087
3088 // Emit the state transitions.
3089 unsigned NumLocations = 0;
3090 for (auto &FileIDAndFile : Diag.DiagStatesByLoc.Files) {
3091 if (!FileIDAndFile.first.isValid() ||
3092 !FileIDAndFile.second.HasLocalTransitions)
3093 continue;
3094 ++NumLocations;
3095
3096 SourceLocation Loc = Diag.SourceMgr->getComposedLoc(FileIDAndFile.first, 0);
3097 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3097, __extension__ __PRETTY_FUNCTION__))
;
3098 AddSourceLocation(Loc, Record);
3099
3100 Record.push_back(FileIDAndFile.second.StateTransitions.size());
3101 for (auto &StatePoint : FileIDAndFile.second.StateTransitions) {
3102 Record.push_back(StatePoint.Offset);
3103 AddDiagState(StatePoint.State, false);
3104 }
3105 }
3106
3107 // Backpatch the number of locations.
3108 Record[NumLocationsIdx] = NumLocations;
3109
3110 // Emit CurDiagStateLoc. Do it last in order to match source order.
3111 //
3112 // This also protects against a hypothetical corner case with simulating
3113 // -Werror settings for implicit modules in the ASTReader, where reading
3114 // CurDiagState out of context could change whether warning pragmas are
3115 // treated as errors.
3116 AddSourceLocation(Diag.DiagStatesByLoc.CurDiagStateLoc, Record);
3117 AddDiagState(Diag.DiagStatesByLoc.CurDiagState, false);
3118
3119 Stream.EmitRecord(DIAG_PRAGMA_MAPPINGS, Record);
3120}
3121
3122//===----------------------------------------------------------------------===//
3123// Type Serialization
3124//===----------------------------------------------------------------------===//
3125
3126/// \brief Write the representation of a type to the AST stream.
3127void ASTWriter::WriteType(QualType T) {
3128 TypeIdx &IdxRef = TypeIdxs[T];
3129 if (IdxRef.getIndex() == 0) // we haven't seen this type before.
3130 IdxRef = TypeIdx(NextTypeID++);
3131 TypeIdx Idx = IdxRef;
3132
3133 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3133, __extension__ __PRETTY_FUNCTION__))
;
3134
3135 RecordData Record;
3136
3137 // Emit the type's representation.
3138 ASTTypeWriter W(*this, Record);
3139 W.Visit(T);
3140 uint64_t Offset = W.Emit();
3141
3142 // Record the offset for this type.
3143 unsigned Index = Idx.getIndex() - FirstTypeID;
3144 if (TypeOffsets.size() == Index)
3145 TypeOffsets.push_back(Offset);
3146 else if (TypeOffsets.size() < Index) {
3147 TypeOffsets.resize(Index + 1);
3148 TypeOffsets[Index] = Offset;
3149 } else {
3150 llvm_unreachable("Types emitted in wrong order")::llvm::llvm_unreachable_internal("Types emitted in wrong order"
, "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3150)
;
3151 }
3152}
3153
3154//===----------------------------------------------------------------------===//
3155// Declaration Serialization
3156//===----------------------------------------------------------------------===//
3157
3158/// \brief Write the block containing all of the declaration IDs
3159/// lexically declared within the given DeclContext.
3160///
3161/// \returns the offset of the DECL_CONTEXT_LEXICAL block within the
3162/// bistream, or 0 if no block was written.
3163uint64_t ASTWriter::WriteDeclContextLexicalBlock(ASTContext &Context,
3164 DeclContext *DC) {
3165 if (DC->decls_empty())
3166 return 0;
3167
3168 uint64_t Offset = Stream.GetCurrentBitNo();
3169 SmallVector<uint32_t, 128> KindDeclPairs;
3170 for (const auto *D : DC->decls()) {
3171 KindDeclPairs.push_back(D->getKind());
3172 KindDeclPairs.push_back(GetDeclRef(D));
3173 }
3174
3175 ++NumLexicalDeclContexts;
3176 RecordData::value_type Record[] = {DECL_CONTEXT_LEXICAL};
3177 Stream.EmitRecordWithBlob(DeclContextLexicalAbbrev, Record,
3178 bytes(KindDeclPairs));
3179 return Offset;
3180}
3181
3182void ASTWriter::WriteTypeDeclOffsets() {
3183 using namespace llvm;
3184
3185 // Write the type offsets array
3186 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3187 Abbrev->Add(BitCodeAbbrevOp(TYPE_OFFSET));
3188 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of types
3189 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base type index
3190 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // types block
3191 unsigned TypeOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3192 {
3193 RecordData::value_type Record[] = {TYPE_OFFSET, TypeOffsets.size(),
3194 FirstTypeID - NUM_PREDEF_TYPE_IDS};
3195 Stream.EmitRecordWithBlob(TypeOffsetAbbrev, Record, bytes(TypeOffsets));
3196 }
3197
3198 // Write the declaration offsets array
3199 Abbrev = std::make_shared<BitCodeAbbrev>();
3200 Abbrev->Add(BitCodeAbbrevOp(DECL_OFFSET));
3201 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of declarations
3202 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // base decl ID
3203 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob)); // declarations block
3204 unsigned DeclOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3205 {
3206 RecordData::value_type Record[] = {DECL_OFFSET, DeclOffsets.size(),
3207 FirstDeclID - NUM_PREDEF_DECL_IDS};
3208 Stream.EmitRecordWithBlob(DeclOffsetAbbrev, Record, bytes(DeclOffsets));
3209 }
3210}
3211
3212void ASTWriter::WriteFileDeclIDsMap() {
3213 using namespace llvm;
3214
3215 SmallVector<std::pair<FileID, DeclIDInFileInfo *>, 64> SortedFileDeclIDs(
3216 FileDeclIDs.begin(), FileDeclIDs.end());
3217 std::sort(SortedFileDeclIDs.begin(), SortedFileDeclIDs.end(),
3218 llvm::less_first());
3219
3220 // Join the vectors of DeclIDs from all files.
3221 SmallVector<DeclID, 256> FileGroupedDeclIDs;
3222 for (auto &FileDeclEntry : SortedFileDeclIDs) {
3223 DeclIDInFileInfo &Info = *FileDeclEntry.second;
3224 Info.FirstDeclIndex = FileGroupedDeclIDs.size();
3225 for (auto &LocDeclEntry : Info.DeclIDs)
3226 FileGroupedDeclIDs.push_back(LocDeclEntry.second);
3227 }
3228
3229 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3230 Abbrev->Add(BitCodeAbbrevOp(FILE_SORTED_DECLS));
3231 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3232 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3233 unsigned AbbrevCode = Stream.EmitAbbrev(std::move(Abbrev));
3234 RecordData::value_type Record[] = {FILE_SORTED_DECLS,
3235 FileGroupedDeclIDs.size()};
3236 Stream.EmitRecordWithBlob(AbbrevCode, Record, bytes(FileGroupedDeclIDs));
3237}
3238
3239void ASTWriter::WriteComments() {
3240 Stream.EnterSubblock(COMMENTS_BLOCK_ID, 3);
3241 ArrayRef<RawComment *> RawComments = Context->Comments.getComments();
3242 RecordData Record;
3243 for (const auto *I : RawComments) {
3244 Record.clear();
3245 AddSourceRange(I->getSourceRange(), Record);
3246 Record.push_back(I->getKind());
3247 Record.push_back(I->isTrailingComment());
3248 Record.push_back(I->isAlmostTrailingComment());
3249 Stream.EmitRecord(COMMENTS_RAW_COMMENT, Record);
3250 }
3251 Stream.ExitBlock();
3252}
3253
3254//===----------------------------------------------------------------------===//
3255// Global Method Pool and Selector Serialization
3256//===----------------------------------------------------------------------===//
3257
3258namespace {
3259
3260// Trait used for the on-disk hash table used in the method pool.
3261class ASTMethodPoolTrait {
3262 ASTWriter &Writer;
3263
3264public:
3265 using key_type = Selector;
3266 using key_type_ref = key_type;
3267
3268 struct data_type {
3269 SelectorID ID;
3270 ObjCMethodList Instance, Factory;
3271 };
3272 using data_type_ref = const data_type &;
3273
3274 using hash_value_type = unsigned;
3275 using offset_type = unsigned;
3276
3277 explicit ASTMethodPoolTrait(ASTWriter &Writer) : Writer(Writer) {}
3278
3279 static hash_value_type ComputeHash(Selector Sel) {
3280 return serialization::ComputeHash(Sel);
3281 }
3282
3283 std::pair<unsigned, unsigned>
3284 EmitKeyDataLength(raw_ostream& Out, Selector Sel,
3285 data_type_ref Methods) {
3286 using namespace llvm::support;
3287
3288 endian::Writer<little> LE(Out);
3289 unsigned KeyLen = 2 + (Sel.getNumArgs()? Sel.getNumArgs() * 4 : 4);
3290 LE.write<uint16_t>(KeyLen);
3291 unsigned DataLen = 4 + 2 + 2; // 2 bytes for each of the method counts
3292 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3293 Method = Method->getNext())
3294 if (Method->getMethod())
3295 DataLen += 4;
3296 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3297 Method = Method->getNext())
3298 if (Method->getMethod())
3299 DataLen += 4;
3300 LE.write<uint16_t>(DataLen);
3301 return std::make_pair(KeyLen, DataLen);
3302 }
3303
3304 void EmitKey(raw_ostream& Out, Selector Sel, unsigned) {
3305 using namespace llvm::support;
3306
3307 endian::Writer<little> LE(Out);
3308 uint64_t Start = Out.tell();
3309 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3309, __extension__ __PRETTY_FUNCTION__))
;
3310 Writer.SetSelectorOffset(Sel, Start);
3311 unsigned N = Sel.getNumArgs();
3312 LE.write<uint16_t>(N);
3313 if (N == 0)
3314 N = 1;
3315 for (unsigned I = 0; I != N; ++I)
3316 LE.write<uint32_t>(
3317 Writer.getIdentifierRef(Sel.getIdentifierInfoForSlot(I)));
3318 }
3319
3320 void EmitData(raw_ostream& Out, key_type_ref,
3321 data_type_ref Methods, unsigned DataLen) {
3322 using namespace llvm::support;
3323
3324 endian::Writer<little> LE(Out);
3325 uint64_t Start = Out.tell(); (void)Start;
3326 LE.write<uint32_t>(Methods.ID);
3327 unsigned NumInstanceMethods = 0;
3328 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3329 Method = Method->getNext())
3330 if (Method->getMethod())
3331 ++NumInstanceMethods;
3332
3333 unsigned NumFactoryMethods = 0;
3334 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3335 Method = Method->getNext())
3336 if (Method->getMethod())
3337 ++NumFactoryMethods;
3338
3339 unsigned InstanceBits = Methods.Instance.getBits();
3340 assert(InstanceBits < 4)(static_cast <bool> (InstanceBits < 4) ? void (0) : __assert_fail
("InstanceBits < 4", "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3340, __extension__ __PRETTY_FUNCTION__))
;
3341 unsigned InstanceHasMoreThanOneDeclBit =
3342 Methods.Instance.hasMoreThanOneDecl();
3343 unsigned FullInstanceBits = (NumInstanceMethods << 3) |
3344 (InstanceHasMoreThanOneDeclBit << 2) |
3345 InstanceBits;
3346 unsigned FactoryBits = Methods.Factory.getBits();
3347 assert(FactoryBits < 4)(static_cast <bool> (FactoryBits < 4) ? void (0) : __assert_fail
("FactoryBits < 4", "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3347, __extension__ __PRETTY_FUNCTION__))
;
3348 unsigned FactoryHasMoreThanOneDeclBit =
3349 Methods.Factory.hasMoreThanOneDecl();
3350 unsigned FullFactoryBits = (NumFactoryMethods << 3) |
3351 (FactoryHasMoreThanOneDeclBit << 2) |
3352 FactoryBits;
3353 LE.write<uint16_t>(FullInstanceBits);
3354 LE.write<uint16_t>(FullFactoryBits);
3355 for (const ObjCMethodList *Method = &Methods.Instance; Method;
3356 Method = Method->getNext())
3357 if (Method->getMethod())
3358 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3359 for (const ObjCMethodList *Method = &Methods.Factory; Method;
3360 Method = Method->getNext())
3361 if (Method->getMethod())
3362 LE.write<uint32_t>(Writer.getDeclID(Method->getMethod()));
3363
3364 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3364, __extension__ __PRETTY_FUNCTION__))
;
3365 }
3366};
3367
3368} // namespace
3369
3370/// \brief Write ObjC data: selectors and the method pool.
3371///
3372/// The method pool contains both instance and factory methods, stored
3373/// in an on-disk hash table indexed by the selector. The hash table also
3374/// contains an empty entry for every other selector known to Sema.
3375void ASTWriter::WriteSelectors(Sema &SemaRef) {
3376 using namespace llvm;
3377
3378 // Do we have to do anything at all?
3379 if (SemaRef.MethodPool.empty() && SelectorIDs.empty())
3380 return;
3381 unsigned NumTableEntries = 0;
3382 // Create and write out the blob that contains selectors and the method pool.
3383 {
3384 llvm::OnDiskChainedHashTableGenerator<ASTMethodPoolTrait> Generator;
3385 ASTMethodPoolTrait Trait(*this);
3386
3387 // Create the on-disk hash table representation. We walk through every
3388 // selector we've seen and look it up in the method pool.
3389 SelectorOffsets.resize(NextSelectorID - FirstSelectorID);
3390 for (auto &SelectorAndID : SelectorIDs) {
3391 Selector S = SelectorAndID.first;
3392 SelectorID ID = SelectorAndID.second;
3393 Sema::GlobalMethodPool::iterator F = SemaRef.MethodPool.find(S);
3394 ASTMethodPoolTrait::data_type Data = {
3395 ID,
3396 ObjCMethodList(),
3397 ObjCMethodList()
3398 };
3399 if (F != SemaRef.MethodPool.end()) {
3400 Data.Instance = F->second.first;
3401 Data.Factory = F->second.second;
3402 }
3403 // Only write this selector if it's not in an existing AST or something
3404 // changed.
3405 if (Chain && ID < FirstSelectorID) {
3406 // Selector already exists. Did it change?
3407 bool changed = false;
3408 for (ObjCMethodList *M = &Data.Instance;
3409 !changed && M && M->getMethod(); M = M->getNext()) {
3410 if (!M->getMethod()->isFromASTFile())
3411 changed = true;
3412 }
3413 for (ObjCMethodList *M = &Data.Factory; !changed && M && M->getMethod();
3414 M = M->getNext()) {
3415 if (!M->getMethod()->isFromASTFile())
3416 changed = true;
3417 }
3418 if (!changed)
3419 continue;
3420 } else if (Data.Instance.getMethod() || Data.Factory.getMethod()) {
3421 // A new method pool entry.
3422 ++NumTableEntries;
3423 }
3424 Generator.insert(S, Data, Trait);
3425 }
3426
3427 // Create the on-disk hash table in a buffer.
3428 SmallString<4096> MethodPool;
3429 uint32_t BucketOffset;
3430 {
3431 using namespace llvm::support;
3432
3433 ASTMethodPoolTrait Trait(*this);
3434 llvm::raw_svector_ostream Out(MethodPool);
3435 // Make sure that no bucket is at offset 0
3436 endian::Writer<little>(Out).write<uint32_t>(0);
3437 BucketOffset = Generator.Emit(Out, Trait);
3438 }
3439
3440 // Create a blob abbreviation
3441 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3442 Abbrev->Add(BitCodeAbbrevOp(METHOD_POOL));
3443 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3444 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3445 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3446 unsigned MethodPoolAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3447
3448 // Write the method pool
3449 {
3450 RecordData::value_type Record[] = {METHOD_POOL, BucketOffset,
3451 NumTableEntries};
3452 Stream.EmitRecordWithBlob(MethodPoolAbbrev, Record, MethodPool);
3453 }
3454
3455 // Create a blob abbreviation for the selector table offsets.
3456 Abbrev = std::make_shared<BitCodeAbbrev>();
3457 Abbrev->Add(BitCodeAbbrevOp(SELECTOR_OFFSETS));
3458 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // size
3459 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3460 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3461 unsigned SelectorOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3462
3463 // Write the selector offsets table.
3464 {
3465 RecordData::value_type Record[] = {
3466 SELECTOR_OFFSETS, SelectorOffsets.size(),
3467 FirstSelectorID - NUM_PREDEF_SELECTOR_IDS};
3468 Stream.EmitRecordWithBlob(SelectorOffsetAbbrev, Record,
3469 bytes(SelectorOffsets));
3470 }
3471 }
3472}
3473
3474/// \brief Write the selectors referenced in @selector expression into AST file.
3475void ASTWriter::WriteReferencedSelectorsPool(Sema &SemaRef) {
3476 using namespace llvm;
3477
3478 if (SemaRef.ReferencedSelectors.empty())
3479 return;
3480
3481 RecordData Record;
3482 ASTRecordWriter Writer(*this, Record);
3483
3484 // Note: this writes out all references even for a dependent AST. But it is
3485 // very tricky to fix, and given that @selector shouldn't really appear in
3486 // headers, probably not worth it. It's not a correctness issue.
3487 for (auto &SelectorAndLocation : SemaRef.ReferencedSelectors) {
3488 Selector Sel = SelectorAndLocation.first;
3489 SourceLocation Loc = SelectorAndLocation.second;
3490 Writer.AddSelectorRef(Sel);
3491 Writer.AddSourceLocation(Loc);
3492 }
3493 Writer.Emit(REFERENCED_SELECTOR_POOL);
3494}
3495
3496//===----------------------------------------------------------------------===//
3497// Identifier Table Serialization
3498//===----------------------------------------------------------------------===//
3499
3500/// Determine the declaration that should be put into the name lookup table to
3501/// represent the given declaration in this module. This is usually D itself,
3502/// but if D was imported and merged into a local declaration, we want the most
3503/// recent local declaration instead. The chosen declaration will be the most
3504/// recent declaration in any module that imports this one.
3505static NamedDecl *getDeclForLocalLookup(const LangOptions &LangOpts,
3506 NamedDecl *D) {
3507 if (!LangOpts.Modules || !D->isFromASTFile())
3508 return D;
3509
3510 if (Decl *Redecl = D->getPreviousDecl()) {
3511 // For Redeclarable decls, a prior declaration might be local.
3512 for (; Redecl; Redecl = Redecl->getPreviousDecl()) {
3513 // If we find a local decl, we're done.
3514 if (!Redecl->isFromASTFile()) {
3515 // Exception: in very rare cases (for injected-class-names), not all
3516 // redeclarations are in the same semantic context. Skip ones in a
3517 // different context. They don't go in this lookup table at all.
3518 if (!Redecl->getDeclContext()->getRedeclContext()->Equals(
3519 D->getDeclContext()->getRedeclContext()))
3520 continue;
3521 return cast<NamedDecl>(Redecl);
3522 }
3523
3524 // If we find a decl from a (chained-)PCH stop since we won't find a
3525 // local one.
3526 if (Redecl->getOwningModuleID() == 0)
3527 break;
3528 }
3529 } else if (Decl *First = D->getCanonicalDecl()) {
3530 // For Mergeable decls, the first decl might be local.
3531 if (!First->isFromASTFile())
3532 return cast<NamedDecl>(First);
3533 }
3534
3535 // All declarations are imported. Our most recent declaration will also be
3536 // the most recent one in anyone who imports us.
3537 return D;
3538}
3539
3540namespace {
3541
3542class ASTIdentifierTableTrait {
3543 ASTWriter &Writer;
3544 Preprocessor &PP;
3545 IdentifierResolver &IdResolver;
3546 bool IsModule;
3547 bool NeedDecls;
3548 ASTWriter::RecordData *InterestingIdentifierOffsets;
3549
3550 /// \brief Determines whether this is an "interesting" identifier that needs a
3551 /// full IdentifierInfo structure written into the hash table. Notably, this
3552 /// doesn't check whether the name has macros defined; use PublicMacroIterator
3553 /// to check that.
3554 bool isInterestingIdentifier(const IdentifierInfo *II, uint64_t MacroOffset) {
3555 if (MacroOffset ||
3556 II->isPoisoned() ||
3557 (IsModule ? II->hasRevertedBuiltin() : II->getObjCOrBuiltinID()) ||
3558 II->hasRevertedTokenIDToIdentifier() ||
3559 (NeedDecls && II->getFETokenInfo<void>()))
3560 return true;
3561
3562 return false;
3563 }
3564
3565public:
3566 using key_type = IdentifierInfo *;
3567 using key_type_ref = key_type;
3568
3569 using data_type = IdentID;
3570 using data_type_ref = data_type;
3571
3572 using hash_value_type = unsigned;
3573 using offset_type = unsigned;
3574
3575 ASTIdentifierTableTrait(ASTWriter &Writer, Preprocessor &PP,
3576 IdentifierResolver &IdResolver, bool IsModule,
3577 ASTWriter::RecordData *InterestingIdentifierOffsets)
3578 : Writer(Writer), PP(PP), IdResolver(IdResolver), IsModule(IsModule),
3579 NeedDecls(!IsModule || !Writer.getLangOpts().CPlusPlus),
3580 InterestingIdentifierOffsets(InterestingIdentifierOffsets) {}
3581
3582 bool needDecls() const { return NeedDecls; }
3583
3584 static hash_value_type ComputeHash(const IdentifierInfo* II) {
3585 return llvm::HashString(II->getName());
3586 }
3587
3588 bool isInterestingIdentifier(const IdentifierInfo *II) {
3589 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3590 return isInterestingIdentifier(II, MacroOffset);
3591 }
3592
3593 bool isInterestingNonMacroIdentifier(const IdentifierInfo *II) {
3594 return isInterestingIdentifier(II, 0);
3595 }
3596
3597 std::pair<unsigned, unsigned>
3598 EmitKeyDataLength(raw_ostream& Out, IdentifierInfo* II, IdentID ID) {
3599 unsigned KeyLen = II->getLength() + 1;
3600 unsigned DataLen = 4; // 4 bytes for the persistent ID << 1
3601 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3602 if (isInterestingIdentifier(II, MacroOffset)) {
3603 DataLen += 2; // 2 bytes for builtin ID
3604 DataLen += 2; // 2 bytes for flags
3605 if (MacroOffset)
3606 DataLen += 4; // MacroDirectives offset.
3607
3608 if (NeedDecls) {
3609 for (IdentifierResolver::iterator D = IdResolver.begin(II),
3610 DEnd = IdResolver.end();
3611 D != DEnd; ++D)
3612 DataLen += 4;
3613 }
3614 }
3615
3616 using namespace llvm::support;
3617
3618 endian::Writer<little> LE(Out);
3619
3620 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3620, __extension__ __PRETTY_FUNCTION__))
;
3621 LE.write<uint16_t>(DataLen);
3622 // We emit the key length after the data length so that every
3623 // string is preceded by a 16-bit length. This matches the PTH
3624 // format for storing identifiers.
3625 LE.write<uint16_t>(KeyLen);
3626 return std::make_pair(KeyLen, DataLen);
3627 }
3628
3629 void EmitKey(raw_ostream& Out, const IdentifierInfo* II,
3630 unsigned KeyLen) {
3631 // Record the location of the key data. This is used when generating
3632 // the mapping from persistent IDs to strings.
3633 Writer.SetIdentifierOffset(II, Out.tell());
3634
3635 // Emit the offset of the key/data length information to the interesting
3636 // identifiers table if necessary.
3637 if (InterestingIdentifierOffsets && isInterestingIdentifier(II))
3638 InterestingIdentifierOffsets->push_back(Out.tell() - 4);
3639
3640 Out.write(II->getNameStart(), KeyLen);
3641 }
3642
3643 void EmitData(raw_ostream& Out, IdentifierInfo* II,
3644 IdentID ID, unsigned) {
3645 using namespace llvm::support;
3646
3647 endian::Writer<little> LE(Out);
3648
3649 auto MacroOffset = Writer.getMacroDirectivesOffset(II);
3650 if (!isInterestingIdentifier(II, MacroOffset)) {
3651 LE.write<uint32_t>(ID << 1);
3652 return;
3653 }
3654
3655 LE.write<uint32_t>((ID << 1) | 0x01);
3656 uint32_t Bits = (uint32_t)II->getObjCOrBuiltinID();
3657 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3657, __extension__ __PRETTY_FUNCTION__))
;
3658 LE.write<uint16_t>(Bits);
3659 Bits = 0;
3660 bool HadMacroDefinition = MacroOffset != 0;
3661 Bits = (Bits << 1) | unsigned(HadMacroDefinition);
3662 Bits = (Bits << 1) | unsigned(II->isExtensionToken());
3663 Bits = (Bits << 1) | unsigned(II->isPoisoned());
3664 Bits = (Bits << 1) | unsigned(II->hasRevertedBuiltin());
3665 Bits = (Bits << 1) | unsigned(II->hasRevertedTokenIDToIdentifier());
3666 Bits = (Bits << 1) | unsigned(II->isCPlusPlusOperatorKeyword());
3667 LE.write<uint16_t>(Bits);
3668
3669 if (HadMacroDefinition)
3670 LE.write<uint32_t>(MacroOffset);
3671
3672 if (NeedDecls) {
3673 // Emit the declaration IDs in reverse order, because the
3674 // IdentifierResolver provides the declarations as they would be
3675 // visible (e.g., the function "stat" would come before the struct
3676 // "stat"), but the ASTReader adds declarations to the end of the list
3677 // (so we need to see the struct "stat" before the function "stat").
3678 // Only emit declarations that aren't from a chained PCH, though.
3679 SmallVector<NamedDecl *, 16> Decls(IdResolver.begin(II),
3680 IdResolver.end());
3681 for (SmallVectorImpl<NamedDecl *>::reverse_iterator D = Decls.rbegin(),
3682 DEnd = Decls.rend();
3683 D != DEnd; ++D)
3684 LE.write<uint32_t>(
3685 Writer.getDeclID(getDeclForLocalLookup(PP.getLangOpts(), *D)));
3686 }
3687 }
3688};
3689
3690} // namespace
3691
3692/// \brief Write the identifier table into the AST file.
3693///
3694/// The identifier table consists of a blob containing string data
3695/// (the actual identifiers themselves) and a separate "offsets" index
3696/// that maps identifier IDs to locations within the blob.
3697void ASTWriter::WriteIdentifierTable(Preprocessor &PP,
3698 IdentifierResolver &IdResolver,
3699 bool IsModule) {
3700 using namespace llvm;
3701
3702 RecordData InterestingIdents;
3703
3704 // Create and write out the blob that contains the identifier
3705 // strings.
3706 {
3707 llvm::OnDiskChainedHashTableGenerator<ASTIdentifierTableTrait> Generator;
3708 ASTIdentifierTableTrait Trait(
3709 *this, PP, IdResolver, IsModule,
3710 (getLangOpts().CPlusPlus && IsModule) ? &InterestingIdents : nullptr);
3711
3712 // Look for any identifiers that were named while processing the
3713 // headers, but are otherwise not needed. We add these to the hash
3714 // table to enable checking of the predefines buffer in the case
3715 // where the user adds new macro definitions when building the AST
3716 // file.
3717 SmallVector<const IdentifierInfo *, 128> IIs;
3718 for (const auto &ID : PP.getIdentifierTable())
3719 IIs.push_back(ID.second);
3720 // Sort the identifiers lexicographically before getting them references so
3721 // that their order is stable.
3722 std::sort(IIs.begin(), IIs.end(), llvm::less_ptr<IdentifierInfo>());
3723 for (const IdentifierInfo *II : IIs)
3724 if (Trait.isInterestingNonMacroIdentifier(II))
3725 getIdentifierRef(II);
3726
3727 // Create the on-disk hash table representation. We only store offsets
3728 // for identifiers that appear here for the first time.
3729 IdentifierOffsets.resize(NextIdentID - FirstIdentID);
3730 for (auto IdentIDPair : IdentifierIDs) {
3731 auto *II = const_cast<IdentifierInfo *>(IdentIDPair.first);
3732 IdentID ID = IdentIDPair.second;
3733 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3733, __extension__ __PRETTY_FUNCTION__))
;
3734 // Write out identifiers if either the ID is local or the identifier has
3735 // changed since it was loaded.
3736 if (ID >= FirstIdentID || !Chain || !II->isFromAST()
3737 || II->hasChangedSinceDeserialization() ||
3738 (Trait.needDecls() &&
3739 II->hasFETokenInfoChangedSinceDeserialization()))
3740 Generator.insert(II, ID, Trait);
3741 }
3742
3743 // Create the on-disk hash table in a buffer.
3744 SmallString<4096> IdentifierTable;
3745 uint32_t BucketOffset;
3746 {
3747 using namespace llvm::support;
3748
3749 llvm::raw_svector_ostream Out(IdentifierTable);
3750 // Make sure that no bucket is at offset 0
3751 endian::Writer<little>(Out).write<uint32_t>(0);
3752 BucketOffset = Generator.Emit(Out, Trait);
3753 }
3754
3755 // Create a blob abbreviation
3756 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3757 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_TABLE));
3758 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32));
3759 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3760 unsigned IDTableAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3761
3762 // Write the identifier table
3763 RecordData::value_type Record[] = {IDENTIFIER_TABLE, BucketOffset};
3764 Stream.EmitRecordWithBlob(IDTableAbbrev, Record, IdentifierTable);
3765 }
3766
3767 // Write the offsets table for identifier IDs.
3768 auto Abbrev = std::make_shared<BitCodeAbbrev>();
3769 Abbrev->Add(BitCodeAbbrevOp(IDENTIFIER_OFFSET));
3770 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // # of identifiers
3771 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Fixed, 32)); // first ID
3772 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
3773 unsigned IdentifierOffsetAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
3774
3775#ifndef NDEBUG
3776 for (unsigned I = 0, N = IdentifierOffsets.size(); I != N; ++I)
3777 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3777, __extension__ __PRETTY_FUNCTION__))
;
3778#endif
3779
3780 RecordData::value_type Record[] = {IDENTIFIER_OFFSET,
3781 IdentifierOffsets.size(),
3782 FirstIdentID - NUM_PREDEF_IDENT_IDS};
3783 Stream.EmitRecordWithBlob(IdentifierOffsetAbbrev, Record,
3784 bytes(IdentifierOffsets));
3785
3786 // In C++, write the list of interesting identifiers (those that are
3787 // defined as macros, poisoned, or similar unusual things).
3788 if (!InterestingIdents.empty())
3789 Stream.EmitRecord(INTERESTING_IDENTIFIERS, InterestingIdents);
3790}
3791
3792//===----------------------------------------------------------------------===//
3793// DeclContext's Name Lookup Table Serialization
3794//===----------------------------------------------------------------------===//
3795
3796namespace {
3797
3798// Trait used for the on-disk hash table used in the method pool.
3799class ASTDeclContextNameLookupTrait {
3800 ASTWriter &Writer;
3801 llvm::SmallVector<DeclID, 64> DeclIDs;
3802
3803public:
3804 using key_type = DeclarationNameKey;
3805 using key_type_ref = key_type;
3806
3807 /// A start and end index into DeclIDs, representing a sequence of decls.
3808 using data_type = std::pair<unsigned, unsigned>;
3809 using data_type_ref = const data_type &;
3810
3811 using hash_value_type = unsigned;
3812 using offset_type = unsigned;
3813
3814 explicit ASTDeclContextNameLookupTrait(ASTWriter &Writer) : Writer(Writer) {}
3815
3816 template<typename Coll>
3817 data_type getData(const Coll &Decls) {
3818 unsigned Start = DeclIDs.size();
3819 for (NamedDecl *D : Decls) {
3820 DeclIDs.push_back(
3821 Writer.GetDeclRef(getDeclForLocalLookup(Writer.getLangOpts(), D)));
3822 }
3823 return std::make_pair(Start, DeclIDs.size());
3824 }
3825
3826 data_type ImportData(const reader::ASTDeclContextNameLookupTrait::data_type &FromReader) {
3827 unsigned Start = DeclIDs.size();
3828 for (auto ID : FromReader)
3829 DeclIDs.push_back(ID);
3830 return std::make_pair(Start, DeclIDs.size());
3831 }
3832
3833 static bool EqualKey(key_type_ref a, key_type_ref b) {
3834 return a == b;
3835 }
3836
3837 hash_value_type ComputeHash(DeclarationNameKey Name) {
3838 return Name.getHash();
3839 }
3840
3841 void EmitFileRef(raw_ostream &Out, ModuleFile *F) const {
3842 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3843, __extension__ __PRETTY_FUNCTION__))
3843 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3843, __extension__ __PRETTY_FUNCTION__))
;
3844
3845 using namespace llvm::support;
3846
3847 endian::Writer<little>(Out)
3848 .write<uint32_t>(Writer.getChain()->getModuleFileID(F));
3849 }
3850
3851 std::pair<unsigned, unsigned> EmitKeyDataLength(raw_ostream &Out,
3852 DeclarationNameKey Name,
3853 data_type_ref Lookup) {
3854 using namespace llvm::support;
3855
3856 endian::Writer<little> LE(Out);
3857 unsigned KeyLen = 1;
3858 switch (Name.getKind()) {
3859 case DeclarationName::Identifier:
3860 case DeclarationName::ObjCZeroArgSelector:
3861 case DeclarationName::ObjCOneArgSelector:
3862 case DeclarationName::ObjCMultiArgSelector:
3863 case DeclarationName::CXXLiteralOperatorName:
3864 case DeclarationName::CXXDeductionGuideName:
3865 KeyLen += 4;
3866 break;
3867 case DeclarationName::CXXOperatorName:
3868 KeyLen += 1;
3869 break;
3870 case DeclarationName::CXXConstructorName:
3871 case DeclarationName::CXXDestructorName:
3872 case DeclarationName::CXXConversionFunctionName:
3873 case DeclarationName::CXXUsingDirective:
3874 break;
3875 }
3876 LE.write<uint16_t>(KeyLen);
3877
3878 // 4 bytes for each DeclID.
3879 unsigned DataLen = 4 * (Lookup.second - Lookup.first);
3880 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3881, __extension__ __PRETTY_FUNCTION__))
3881 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3881, __extension__ __PRETTY_FUNCTION__))
;
3882 LE.write<uint16_t>(DataLen);
3883
3884 return std::make_pair(KeyLen, DataLen);
3885 }
3886
3887 void EmitKey(raw_ostream &Out, DeclarationNameKey Name, unsigned) {
3888 using namespace llvm::support;
3889
3890 endian::Writer<little> LE(Out);
3891 LE.write<uint8_t>(Name.getKind());
3892 switch (Name.getKind()) {
3893 case DeclarationName::Identifier:
3894 case DeclarationName::CXXLiteralOperatorName:
3895 case DeclarationName::CXXDeductionGuideName:
3896 LE.write<uint32_t>(Writer.getIdentifierRef(Name.getIdentifier()));
3897 return;
3898 case DeclarationName::ObjCZeroArgSelector:
3899 case DeclarationName::ObjCOneArgSelector:
3900 case DeclarationName::ObjCMultiArgSelector:
3901 LE.write<uint32_t>(Writer.getSelectorRef(Name.getSelector()));
3902 return;
3903 case DeclarationName::CXXOperatorName:
3904 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3905, __extension__ __PRETTY_FUNCTION__))
3905 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3905, __extension__ __PRETTY_FUNCTION__))
;
3906 LE.write<uint8_t>(Name.getOperatorKind());
3907 return;
3908 case DeclarationName::CXXConstructorName:
3909 case DeclarationName::CXXDestructorName:
3910 case DeclarationName::CXXConversionFunctionName:
3911 case DeclarationName::CXXUsingDirective:
3912 return;
3913 }
3914
3915 llvm_unreachable("Invalid name kind?")::llvm::llvm_unreachable_internal("Invalid name kind?", "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3915)
;
3916 }
3917
3918 void EmitData(raw_ostream &Out, key_type_ref, data_type Lookup,
3919 unsigned DataLen) {
3920 using namespace llvm::support;
3921
3922 endian::Writer<little> LE(Out);
3923 uint64_t Start = Out.tell(); (void)Start;
3924 for (unsigned I = Lookup.first, N = Lookup.second; I != N; ++I)
3925 LE.write<uint32_t>(DeclIDs[I]);
3926 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3926, __extension__ __PRETTY_FUNCTION__))
;
3927 }
3928};
3929
3930} // namespace
3931
3932bool ASTWriter::isLookupResultExternal(StoredDeclsList &Result,
3933 DeclContext *DC) {
3934 return Result.hasExternalDecls() && DC->NeedToReconcileExternalVisibleStorage;
3935}
3936
3937bool ASTWriter::isLookupResultEntirelyExternal(StoredDeclsList &Result,
3938 DeclContext *DC) {
3939 for (auto *D : Result.getLookupResult())
3940 if (!getDeclForLocalLookup(getLangOpts(), D)->isFromASTFile())
3941 return false;
3942
3943 return true;
3944}
3945
3946void
3947ASTWriter::GenerateNameLookupTable(const DeclContext *ConstDC,
3948 llvm::SmallVectorImpl<char> &LookupTable) {
3949 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3951, __extension__ __PRETTY_FUNCTION__))
3950 !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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3951, __extension__ __PRETTY_FUNCTION__))
3951 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3951, __extension__ __PRETTY_FUNCTION__))
;
3952
3953 // FIXME: We need to build the lookups table, which is logically const.
3954 auto *DC = const_cast<DeclContext*>(ConstDC);
3955 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 3955, __extension__ __PRETTY_FUNCTION__))
;
3956
3957 // Create the on-disk hash table representation.
3958 MultiOnDiskHashTableGenerator<reader::ASTDeclContextNameLookupTrait,
3959 ASTDeclContextNameLookupTrait> Generator;
3960 ASTDeclContextNameLookupTrait Trait(*this);
3961
3962 // The first step is to collect the declaration names which we need to
3963 // serialize into the name lookup table, and to collect them in a stable
3964 // order.
3965 SmallVector<DeclarationName, 16> Names;
3966
3967 // We also build up small sets of the constructor and conversion function
3968 // names which are visible.
3969 llvm::SmallSet<DeclarationName, 8> ConstructorNameSet, ConversionNameSet;
3970
3971 for (auto &Lookup : *DC->buildLookup()) {
3972 auto &Name = Lookup.first;
3973 auto &Result = Lookup.second;
3974
3975 // If there are no local declarations in our lookup result, we
3976 // don't need to write an entry for the name at all. If we can't
3977 // write out a lookup set without performing more deserialization,
3978 // just skip this entry.
3979 if (isLookupResultExternal(Result, DC) &&
3980 isLookupResultEntirelyExternal(Result, DC))
3981 continue;
3982
3983 // We also skip empty results. If any of the results could be external and
3984 // the currently available results are empty, then all of the results are
3985 // external and we skip it above. So the only way we get here with an empty
3986 // results is when no results could have been external *and* we have
3987 // external results.
3988 //
3989 // FIXME: While we might want to start emitting on-disk entries for negative
3990 // lookups into a decl context as an optimization, today we *have* to skip
3991 // them because there are names with empty lookup results in decl contexts
3992 // which we can't emit in any stable ordering: we lookup constructors and
3993 // conversion functions in the enclosing namespace scope creating empty
3994 // results for them. This in almost certainly a bug in Clang's name lookup,
3995 // but that is likely to be hard or impossible to fix and so we tolerate it
3996 // here by omitting lookups with empty results.
3997 if (Lookup.second.getLookupResult().empty())
3998 continue;
3999
4000 switch (Lookup.first.getNameKind()) {
4001 default:
4002 Names.push_back(Lookup.first);
4003 break;
4004
4005 case DeclarationName::CXXConstructorName:
4006 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4007, __extension__ __PRETTY_FUNCTION__))
4007 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4007, __extension__ __PRETTY_FUNCTION__))
;
4008 ConstructorNameSet.insert(Name);
4009 break;
4010
4011 case DeclarationName::CXXConversionFunctionName:
4012 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4013, __extension__ __PRETTY_FUNCTION__))
4013 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4013, __extension__ __PRETTY_FUNCTION__))
;
4014 ConversionNameSet.insert(Name);
4015 break;
4016 }
4017 }
4018
4019 // Sort the names into a stable order.
4020 std::sort(Names.begin(), Names.end());
4021
4022 if (auto *D = dyn_cast<CXXRecordDecl>(DC)) {
4023 // We need to establish an ordering of constructor and conversion function
4024 // names, and they don't have an intrinsic ordering.
4025
4026 // First we try the easy case by forming the current context's constructor
4027 // name and adding that name first. This is a very useful optimization to
4028 // avoid walking the lexical declarations in many cases, and it also
4029 // handles the only case where a constructor name can come from some other
4030 // lexical context -- when that name is an implicit constructor merged from
4031 // another declaration in the redecl chain. Any non-implicit constructor or
4032 // conversion function which doesn't occur in all the lexical contexts
4033 // would be an ODR violation.
4034 auto ImplicitCtorName = Context->DeclarationNames.getCXXConstructorName(
4035 Context->getCanonicalType(Context->getRecordType(D)));
4036 if (ConstructorNameSet.erase(ImplicitCtorName))
4037 Names.push_back(ImplicitCtorName);
4038
4039 // If we still have constructors or conversion functions, we walk all the
4040 // names in the decl and add the constructors and conversion functions
4041 // which are visible in the order they lexically occur within the context.
4042 if (!ConstructorNameSet.empty() || !ConversionNameSet.empty())
4043 for (Decl *ChildD : cast<CXXRecordDecl>(DC)->decls())
4044 if (auto *ChildND = dyn_cast<NamedDecl>(ChildD)) {
4045 auto Name = ChildND->getDeclName();
4046 switch (Name.getNameKind()) {
4047 default:
4048 continue;
4049
4050 case DeclarationName::CXXConstructorName:
4051 if (ConstructorNameSet.erase(Name))
4052 Names.push_back(Name);
4053 break;
4054
4055 case DeclarationName::CXXConversionFunctionName:
4056 if (ConversionNameSet.erase(Name))
4057 Names.push_back(Name);
4058 break;
4059 }
4060
4061 if (ConstructorNameSet.empty() && ConversionNameSet.empty())
4062 break;
4063 }
4064
4065 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4067, __extension__ __PRETTY_FUNCTION__))
4066 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4067, __extension__ __PRETTY_FUNCTION__))
4067 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4067, __extension__ __PRETTY_FUNCTION__))
;
4068 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4070, __extension__ __PRETTY_FUNCTION__))
4069 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4070, __extension__ __PRETTY_FUNCTION__))
4070 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4070, __extension__ __PRETTY_FUNCTION__))
;
4071 }
4072
4073 // Next we need to do a lookup with each name into this decl context to fully
4074 // populate any results from external sources. We don't actually use the
4075 // results of these lookups because we only want to use the results after all
4076 // results have been loaded and the pointers into them will be stable.
4077 for (auto &Name : Names)
4078 DC->lookup(Name);
4079
4080 // Now we need to insert the results for each name into the hash table. For
4081 // constructor names and conversion function names, we actually need to merge
4082 // all of the results for them into one list of results each and insert
4083 // those.
4084 SmallVector<NamedDecl *, 8> ConstructorDecls;
4085 SmallVector<NamedDecl *, 8> ConversionDecls;
4086
4087 // Now loop over the names, either inserting them or appending for the two
4088 // special cases.
4089 for (auto &Name : Names) {
4090 DeclContext::lookup_result Result = DC->noload_lookup(Name);
4091
4092 switch (Name.getNameKind()) {
4093 default:
4094 Generator.insert(Name, Trait.getData(Result), Trait);
4095 break;
4096
4097 case DeclarationName::CXXConstructorName:
4098 ConstructorDecls.append(Result.begin(), Result.end());
4099 break;
4100
4101 case DeclarationName::CXXConversionFunctionName:
4102 ConversionDecls.append(Result.begin(), Result.end());
4103 break;
4104 }
4105 }
4106
4107 // Handle our two special cases if we ended up having any. We arbitrarily use
4108 // the first declaration's name here because the name itself isn't part of
4109 // the key, only the kind of name is used.
4110 if (!ConstructorDecls.empty())
4111 Generator.insert(ConstructorDecls.front()->getDeclName(),
4112 Trait.getData(ConstructorDecls), Trait);
4113 if (!ConversionDecls.empty())
4114 Generator.insert(ConversionDecls.front()->getDeclName(),
4115 Trait.getData(ConversionDecls), Trait);
4116
4117 // Create the on-disk hash table. Also emit the existing imported and
4118 // merged table if there is one.
4119 auto *Lookups = Chain ? Chain->getLoadedLookupTables(DC) : nullptr;
4120 Generator.emit(LookupTable, Trait, Lookups ? &Lookups->Table : nullptr);
4121}
4122
4123/// \brief Write the block containing all of the declaration IDs
4124/// visible from the given DeclContext.
4125///
4126/// \returns the offset of the DECL_CONTEXT_VISIBLE block within the
4127/// bitstream, or 0 if no block was written.
4128uint64_t ASTWriter::WriteDeclContextVisibleBlock(ASTContext &Context,
4129 DeclContext *DC) {
4130 // If we imported a key declaration of this namespace, write the visible
4131 // lookup results as an update record for it rather than including them
4132 // on this declaration. We will only look at key declarations on reload.
4133 if (isa<NamespaceDecl>(DC) && Chain &&
4134 Chain->getKeyDeclaration(cast<Decl>(DC))->isFromASTFile()) {
4135 // Only do this once, for the first local declaration of the namespace.
4136 for (auto *Prev = cast<NamespaceDecl>(DC)->getPreviousDecl(); Prev;
4137 Prev = Prev->getPreviousDecl())
4138 if (!Prev->isFromASTFile())
4139 return 0;
4140
4141 // Note that we need to emit an update record for the primary context.
4142 UpdatedDeclContexts.insert(DC->getPrimaryContext());
4143
4144 // Make sure all visible decls are written. They will be recorded later. We
4145 // do this using a side data structure so we can sort the names into
4146 // a deterministic order.
4147 StoredDeclsMap *Map = DC->getPrimaryContext()->buildLookup();
4148 SmallVector<std::pair<DeclarationName, DeclContext::lookup_result>, 16>
4149 LookupResults;
4150 if (Map) {
4151 LookupResults.reserve(Map->size());
4152 for (auto &Entry : *Map)
4153 LookupResults.push_back(
4154 std::make_pair(Entry.first, Entry.second.getLookupResult()));
4155 }
4156
4157 std::sort(LookupResults.begin(), LookupResults.end(), llvm::less_first());
4158 for (auto &NameAndResult : LookupResults) {
4159 DeclarationName Name = NameAndResult.first;
4160 DeclContext::lookup_result Result = NameAndResult.second;
4161 if (Name.getNameKind() == DeclarationName::CXXConstructorName ||
4162 Name.getNameKind() == DeclarationName::CXXConversionFunctionName) {
4163 // We have to work around a name lookup bug here where negative lookup
4164 // results for these names get cached in namespace lookup tables (these
4165 // names should never be looked up in a namespace).
4166 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4167, __extension__ __PRETTY_FUNCTION__))
4167 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4167, __extension__ __PRETTY_FUNCTION__))
;
4168 continue;
4169 }
4170
4171 for (NamedDecl *ND : Result)
4172 if (!ND->isFromASTFile())
4173 GetDeclRef(ND);
4174 }
4175
4176 return 0;
4177 }
4178
4179 if (DC->getPrimaryContext() != DC)
4180 return 0;
4181
4182 // Skip contexts which don't support name lookup.
4183 if (!DC->isLookupContext())
4184 return 0;
4185
4186 // If not in C++, we perform name lookup for the translation unit via the
4187 // IdentifierInfo chains, don't bother to build a visible-declarations table.
4188 if (DC->isTranslationUnit() && !Context.getLangOpts().CPlusPlus)
4189 return 0;
4190
4191 // Serialize the contents of the mapping used for lookup. Note that,
4192 // although we have two very different code paths, the serialized
4193 // representation is the same for both cases: a declaration name,
4194 // followed by a size, followed by references to the visible
4195 // declarations that have that name.
4196 uint64_t Offset = Stream.GetCurrentBitNo();
4197 StoredDeclsMap *Map = DC->buildLookup();
4198 if (!Map || Map->empty())
4199 return 0;
4200
4201 // Create the on-disk hash table in a buffer.
4202 SmallString<4096> LookupTable;
4203 GenerateNameLookupTable(DC, LookupTable);
4204
4205 // Write the lookup table
4206 RecordData::value_type Record[] = {DECL_CONTEXT_VISIBLE};
4207 Stream.EmitRecordWithBlob(DeclContextVisibleLookupAbbrev, Record,
4208 LookupTable);
4209 ++NumVisibleDeclContexts;
4210 return Offset;
4211}
4212
4213/// \brief Write an UPDATE_VISIBLE block for the given context.
4214///
4215/// UPDATE_VISIBLE blocks contain the declarations that are added to an existing
4216/// DeclContext in a dependent AST file. As such, they only exist for the TU
4217/// (in C++), for namespaces, and for classes with forward-declared unscoped
4218/// enumeration members (in C++11).
4219void ASTWriter::WriteDeclContextVisibleUpdate(const DeclContext *DC) {
4220 StoredDeclsMap *Map = DC->getLookupPtr();
4221 if (!Map || Map->empty())
4222 return;
4223
4224 // Create the on-disk hash table in a buffer.
4225 SmallString<4096> LookupTable;
4226 GenerateNameLookupTable(DC, LookupTable);
4227
4228 // If we're updating a namespace, select a key declaration as the key for the
4229 // update record; those are the only ones that will be checked on reload.
4230 if (isa<NamespaceDecl>(DC))
4231 DC = cast<DeclContext>(Chain->getKeyDeclaration(cast<Decl>(DC)));
4232
4233 // Write the lookup table
4234 RecordData::value_type Record[] = {UPDATE_VISIBLE, getDeclID(cast<Decl>(DC))};
4235 Stream.EmitRecordWithBlob(UpdateVisibleAbbrev, Record, LookupTable);
4236}
4237
4238/// \brief Write an FP_PRAGMA_OPTIONS block for the given FPOptions.
4239void ASTWriter::WriteFPPragmaOptions(const FPOptions &Opts) {
4240 RecordData::value_type Record[] = {Opts.getInt()};
4241 Stream.EmitRecord(FP_PRAGMA_OPTIONS, Record);
1
Calling 'BitstreamWriter::EmitRecord'
4242}
4243
4244/// \brief Write an OPENCL_EXTENSIONS block for the given OpenCLOptions.
4245void ASTWriter::WriteOpenCLExtensions(Sema &SemaRef) {
4246 if (!SemaRef.Context.getLangOpts().OpenCL)
4247 return;
4248
4249 const OpenCLOptions &Opts = SemaRef.getOpenCLOptions();
4250 RecordData Record;
4251 for (const auto &I:Opts.OptMap) {
4252 AddString(I.getKey(), Record);
4253 auto V = I.getValue();
4254 Record.push_back(V.Supported ? 1 : 0);
4255 Record.push_back(V.Enabled ? 1 : 0);
4256 Record.push_back(V.Avail);
4257 Record.push_back(V.Core);
4258 }
4259 Stream.EmitRecord(OPENCL_EXTENSIONS, Record);
4260}
4261
4262void ASTWriter::WriteOpenCLExtensionTypes(Sema &SemaRef) {
4263 if (!SemaRef.Context.getLangOpts().OpenCL)
4264 return;
4265
4266 RecordData Record;
4267 for (const auto &I : SemaRef.OpenCLTypeExtMap) {
4268 Record.push_back(
4269 static_cast<unsigned>(getTypeID(I.first->getCanonicalTypeInternal())));
4270 Record.push_back(I.second.size());
4271 for (auto Ext : I.second)
4272 AddString(Ext, Record);
4273 }
4274 Stream.EmitRecord(OPENCL_EXTENSION_TYPES, Record);
4275}
4276
4277void ASTWriter::WriteOpenCLExtensionDecls(Sema &SemaRef) {
4278 if (!SemaRef.Context.getLangOpts().OpenCL)
4279 return;
4280
4281 RecordData Record;
4282 for (const auto &I : SemaRef.OpenCLDeclExtMap) {
4283 Record.push_back(getDeclID(I.first));
4284 Record.push_back(static_cast<unsigned>(I.second.size()));
4285 for (auto Ext : I.second)
4286 AddString(Ext, Record);
4287 }
4288 Stream.EmitRecord(OPENCL_EXTENSION_DECLS, Record);
4289}
4290
4291void ASTWriter::WriteCUDAPragmas(Sema &SemaRef) {
4292 if (SemaRef.ForceCUDAHostDeviceDepth > 0) {
4293 RecordData::value_type Record[] = {SemaRef.ForceCUDAHostDeviceDepth};
4294 Stream.EmitRecord(CUDA_PRAGMA_FORCE_HOST_DEVICE_DEPTH, Record);
4295 }
4296}
4297
4298void ASTWriter::WriteObjCCategories() {
4299 SmallVector<ObjCCategoriesInfo, 2> CategoriesMap;
4300 RecordData Categories;
4301
4302 for (unsigned I = 0, N = ObjCClassesWithCategories.size(); I != N; ++I) {
4303 unsigned Size = 0;
4304 unsigned StartIndex = Categories.size();
4305
4306 ObjCInterfaceDecl *Class = ObjCClassesWithCategories[I];
4307
4308 // Allocate space for the size.
4309 Categories.push_back(0);
4310
4311 // Add the categories.
4312 for (ObjCInterfaceDecl::known_categories_iterator
4313 Cat = Class->known_categories_begin(),
4314 CatEnd = Class->known_categories_end();
4315 Cat != CatEnd; ++Cat, ++Size) {
4316 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4316, __extension__ __PRETTY_FUNCTION__))
;
4317 AddDeclRef(*Cat, Categories);
4318 }
4319
4320 // Update the size.
4321 Categories[StartIndex] = Size;
4322
4323 // Record this interface -> category map.
4324 ObjCCategoriesInfo CatInfo = { getDeclID(Class), StartIndex };
4325 CategoriesMap.push_back(CatInfo);
4326 }
4327
4328 // Sort the categories map by the definition ID, since the reader will be
4329 // performing binary searches on this information.
4330 llvm::array_pod_sort(CategoriesMap.begin(), CategoriesMap.end());
4331
4332 // Emit the categories map.
4333 using namespace llvm;
4334
4335 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4336 Abbrev->Add(BitCodeAbbrevOp(OBJC_CATEGORIES_MAP));
4337 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::VBR, 6)); // # of entries
4338 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4339 unsigned AbbrevID = Stream.EmitAbbrev(std::move(Abbrev));
4340
4341 RecordData::value_type Record[] = {OBJC_CATEGORIES_MAP, CategoriesMap.size()};
4342 Stream.EmitRecordWithBlob(AbbrevID, Record,
4343 reinterpret_cast<char *>(CategoriesMap.data()),
4344 CategoriesMap.size() * sizeof(ObjCCategoriesInfo));
4345
4346 // Emit the category lists.
4347 Stream.EmitRecord(OBJC_CATEGORIES, Categories);
4348}
4349
4350void ASTWriter::WriteLateParsedTemplates(Sema &SemaRef) {
4351 Sema::LateParsedTemplateMapT &LPTMap = SemaRef.LateParsedTemplateMap;
4352
4353 if (LPTMap.empty())
4354 return;
4355
4356 RecordData Record;
4357 for (auto &LPTMapEntry : LPTMap) {
4358 const FunctionDecl *FD = LPTMapEntry.first;
4359 LateParsedTemplate &LPT = *LPTMapEntry.second;
4360 AddDeclRef(FD, Record);
4361 AddDeclRef(LPT.D, Record);
4362 Record.push_back(LPT.Toks.size());
4363
4364 for (const auto &Tok : LPT.Toks) {
4365 AddToken(Tok, Record);
4366 }
4367 }
4368 Stream.EmitRecord(LATE_PARSED_TEMPLATE, Record);
4369}
4370
4371/// \brief Write the state of 'pragma clang optimize' at the end of the module.
4372void ASTWriter::WriteOptimizePragmaOptions(Sema &SemaRef) {
4373 RecordData Record;
4374 SourceLocation PragmaLoc = SemaRef.getOptimizeOffPragmaLocation();
4375 AddSourceLocation(PragmaLoc, Record);
4376 Stream.EmitRecord(OPTIMIZE_PRAGMA_OPTIONS, Record);
4377}
4378
4379/// \brief Write the state of 'pragma ms_struct' at the end of the module.
4380void ASTWriter::WriteMSStructPragmaOptions(Sema &SemaRef) {
4381 RecordData Record;
4382 Record.push_back(SemaRef.MSStructPragmaOn ? PMSST_ON : PMSST_OFF);
4383 Stream.EmitRecord(MSSTRUCT_PRAGMA_OPTIONS, Record);
4384}
4385
4386/// \brief Write the state of 'pragma pointers_to_members' at the end of the
4387//module.
4388void ASTWriter::WriteMSPointersToMembersPragmaOptions(Sema &SemaRef) {
4389 RecordData Record;
4390 Record.push_back(SemaRef.MSPointerToMemberRepresentationMethod);
4391 AddSourceLocation(SemaRef.ImplicitMSInheritanceAttrLoc, Record);
4392 Stream.EmitRecord(POINTERS_TO_MEMBERS_PRAGMA_OPTIONS, Record);
4393}
4394
4395/// \brief Write the state of 'pragma pack' at the end of the module.
4396void ASTWriter::WritePackPragmaOptions(Sema &SemaRef) {
4397 // Don't serialize pragma pack state for modules, since it should only take
4398 // effect on a per-submodule basis.
4399 if (WritingModule)
4400 return;
4401
4402 RecordData Record;
4403 Record.push_back(SemaRef.PackStack.CurrentValue);
4404 AddSourceLocation(SemaRef.PackStack.CurrentPragmaLocation, Record);
4405 Record.push_back(SemaRef.PackStack.Stack.size());
4406 for (const auto &StackEntry : SemaRef.PackStack.Stack) {
4407 Record.push_back(StackEntry.Value);
4408 AddSourceLocation(StackEntry.PragmaLocation, Record);
4409 AddSourceLocation(StackEntry.PragmaPushLocation, Record);
4410 AddString(StackEntry.StackSlotLabel, Record);
4411 }
4412 Stream.EmitRecord(PACK_PRAGMA_OPTIONS, Record);
4413}
4414
4415void ASTWriter::WriteModuleFileExtension(Sema &SemaRef,
4416 ModuleFileExtensionWriter &Writer) {
4417 // Enter the extension block.
4418 Stream.EnterSubblock(EXTENSION_BLOCK_ID, 4);
4419
4420 // Emit the metadata record abbreviation.
4421 auto Abv = std::make_shared<llvm::BitCodeAbbrev>();
4422 Abv->Add(llvm::BitCodeAbbrevOp(EXTENSION_METADATA));
4423 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4424 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
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::Blob));
4428 unsigned Abbrev = Stream.EmitAbbrev(std::move(Abv));
4429
4430 // Emit the metadata record.
4431 RecordData Record;
4432 auto Metadata = Writer.getExtension()->getExtensionMetadata();
4433 Record.push_back(EXTENSION_METADATA);
4434 Record.push_back(Metadata.MajorVersion);
4435 Record.push_back(Metadata.MinorVersion);
4436 Record.push_back(Metadata.BlockName.size());
4437 Record.push_back(Metadata.UserInfo.size());
4438 SmallString<64> Buffer;
4439 Buffer += Metadata.BlockName;
4440 Buffer += Metadata.UserInfo;
4441 Stream.EmitRecordWithBlob(Abbrev, Record, Buffer);
4442
4443 // Emit the contents of the extension block.
4444 Writer.writeExtensionContents(SemaRef, Stream);
4445
4446 // Exit the extension block.
4447 Stream.ExitBlock();
4448}
4449
4450//===----------------------------------------------------------------------===//
4451// General Serialization Routines
4452//===----------------------------------------------------------------------===//
4453
4454/// \brief Emit the list of attributes to the specified record.
4455void ASTRecordWriter::AddAttributes(ArrayRef<const Attr *> Attrs) {
4456 auto &Record = *this;
4457 Record.push_back(Attrs.size());
4458 for (const auto *A : Attrs) {
4459 Record.push_back(A->getKind()); // FIXME: stable encoding, target attrs
4460 Record.AddSourceRange(A->getRange());
4461
4462#include "clang/Serialization/AttrPCHWrite.inc"
4463 }
4464}
4465
4466void ASTWriter::AddToken(const Token &Tok, RecordDataImpl &Record) {
4467 AddSourceLocation(Tok.getLocation(), Record);
4468 Record.push_back(Tok.getLength());
4469
4470 // FIXME: When reading literal tokens, reconstruct the literal pointer
4471 // if it is needed.
4472 AddIdentifierRef(Tok.getIdentifierInfo(), Record);
4473 // FIXME: Should translate token kind to a stable encoding.
4474 Record.push_back(Tok.getKind());
4475 // FIXME: Should translate token flags to a stable encoding.
4476 Record.push_back(Tok.getFlags());
4477}
4478
4479void ASTWriter::AddString(StringRef Str, RecordDataImpl &Record) {
4480 Record.push_back(Str.size());
4481 Record.insert(Record.end(), Str.begin(), Str.end());
4482}
4483
4484bool ASTWriter::PreparePathForOutput(SmallVectorImpl<char> &Path) {
4485 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4485, __extension__ __PRETTY_FUNCTION__))
;
4486
4487 bool Changed =
4488 cleanPathForOutput(Context->getSourceManager().getFileManager(), Path);
4489
4490 // Remove a prefix to make the path relative, if relevant.
4491 const char *PathBegin = Path.data();
4492 const char *PathPtr =
4493 adjustFilenameForRelocatableAST(PathBegin, BaseDirectory);
4494 if (PathPtr != PathBegin) {
4495 Path.erase(Path.begin(), Path.begin() + (PathPtr - PathBegin));
4496 Changed = true;
4497 }
4498
4499 return Changed;
4500}
4501
4502void ASTWriter::AddPath(StringRef Path, RecordDataImpl &Record) {
4503 SmallString<128> FilePath(Path);
4504 PreparePathForOutput(FilePath);
4505 AddString(FilePath, Record);
4506}
4507
4508void ASTWriter::EmitRecordWithPath(unsigned Abbrev, RecordDataRef Record,
4509 StringRef Path) {
4510 SmallString<128> FilePath(Path);
4511 PreparePathForOutput(FilePath);
4512 Stream.EmitRecordWithBlob(Abbrev, Record, FilePath);
4513}
4514
4515void ASTWriter::AddVersionTuple(const VersionTuple &Version,
4516 RecordDataImpl &Record) {
4517 Record.push_back(Version.getMajor());
4518 if (Optional<unsigned> Minor = Version.getMinor())
4519 Record.push_back(*Minor + 1);
4520 else
4521 Record.push_back(0);
4522 if (Optional<unsigned> Subminor = Version.getSubminor())
4523 Record.push_back(*Subminor + 1);
4524 else
4525 Record.push_back(0);
4526}
4527
4528/// \brief Note that the identifier II occurs at the given offset
4529/// within the identifier table.
4530void ASTWriter::SetIdentifierOffset(const IdentifierInfo *II, uint32_t Offset) {
4531 IdentID ID = IdentifierIDs[II];
4532 // Only store offsets new to this AST file. Other identifier names are looked
4533 // up earlier in the chain and thus don't need an offset.
4534 if (ID >= FirstIdentID)
4535 IdentifierOffsets[ID - FirstIdentID] = Offset;
4536}
4537
4538/// \brief Note that the selector Sel occurs at the given offset
4539/// within the method pool/selector table.
4540void ASTWriter::SetSelectorOffset(Selector Sel, uint32_t Offset) {
4541 unsigned ID = SelectorIDs[Sel];
4542 assert(ID && "Unknown selector")(static_cast <bool> (ID && "Unknown selector") ?
void (0) : __assert_fail ("ID && \"Unknown selector\""
, "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4542, __extension__ __PRETTY_FUNCTION__))
;
4543 // Don't record offsets for selectors that are also available in a different
4544 // file.
4545 if (ID < FirstSelectorID)
4546 return;
4547 SelectorOffsets[ID - FirstSelectorID] = Offset;
4548}
4549
4550ASTWriter::ASTWriter(llvm::BitstreamWriter &Stream,
4551 SmallVectorImpl<char> &Buffer, MemoryBufferCache &PCMCache,
4552 ArrayRef<std::shared_ptr<ModuleFileExtension>> Extensions,
4553 bool IncludeTimestamps)
4554 : Stream(Stream), Buffer(Buffer), PCMCache(PCMCache),
4555 IncludeTimestamps(IncludeTimestamps) {
4556 for (const auto &Ext : Extensions) {
4557 if (auto Writer = Ext->createExtensionWriter(*this))
4558 ModuleFileExtensionWriters.push_back(std::move(Writer));
4559 }
4560}
4561
4562ASTWriter::~ASTWriter() {
4563 llvm::DeleteContainerSeconds(FileDeclIDs);
4564}
4565
4566const LangOptions &ASTWriter::getLangOpts() const {
4567 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4567, __extension__ __PRETTY_FUNCTION__))
;
4568 return Context->getLangOpts();
4569}
4570
4571time_t ASTWriter::getTimestampForOutput(const FileEntry *E) const {
4572 return IncludeTimestamps ? E->getModificationTime() : 0;
4573}
4574
4575ASTFileSignature ASTWriter::WriteAST(Sema &SemaRef,
4576 const std::string &OutputFile,
4577 Module *WritingModule, StringRef isysroot,
4578 bool hasErrors) {
4579 WritingAST = true;
4580
4581 ASTHasCompilerErrors = hasErrors;
4582
4583 // Emit the file header.
4584 Stream.Emit((unsigned)'C', 8);
4585 Stream.Emit((unsigned)'P', 8);
4586 Stream.Emit((unsigned)'C', 8);
4587 Stream.Emit((unsigned)'H', 8);
4588
4589 WriteBlockInfoBlock();
4590
4591 Context = &SemaRef.Context;
4592 PP = &SemaRef.PP;
4593 this->WritingModule = WritingModule;
4594 ASTFileSignature Signature =
4595 WriteASTCore(SemaRef, isysroot, OutputFile, WritingModule);
4596 Context = nullptr;
4597 PP = nullptr;
4598 this->WritingModule = nullptr;
4599 this->BaseDirectory.clear();
4600
4601 WritingAST = false;
4602 if (SemaRef.Context.getLangOpts().ImplicitModules && WritingModule) {
4603 // Construct MemoryBuffer and update buffer manager.
4604 PCMCache.addBuffer(OutputFile,
4605 llvm::MemoryBuffer::getMemBufferCopy(
4606 StringRef(Buffer.begin(), Buffer.size())));
4607 }
4608 return Signature;
4609}
4610
4611template<typename Vector>
4612static void AddLazyVectorDecls(ASTWriter &Writer, Vector &Vec,
4613 ASTWriter::RecordData &Record) {
4614 for (typename Vector::iterator I = Vec.begin(nullptr, true), E = Vec.end();
4615 I != E; ++I) {
4616 Writer.AddDeclRef(*I, Record);
4617 }
4618}
4619
4620ASTFileSignature ASTWriter::WriteASTCore(Sema &SemaRef, StringRef isysroot,
4621 const std::string &OutputFile,
4622 Module *WritingModule) {
4623 using namespace llvm;
4624
4625 bool isModule = WritingModule != nullptr;
4626
4627 // Make sure that the AST reader knows to finalize itself.
4628 if (Chain)
4629 Chain->finalizeForWriting();
4630
4631 ASTContext &Context = SemaRef.Context;
4632 Preprocessor &PP = SemaRef.PP;
4633
4634 // Set up predefined declaration IDs.
4635 auto RegisterPredefDecl = [&] (Decl *D, PredefinedDeclIDs ID) {
4636 if (D) {
4637 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4637, __extension__ __PRETTY_FUNCTION__))
;
4638 DeclIDs[D] = ID;
4639 }
4640 };
4641 RegisterPredefDecl(Context.getTranslationUnitDecl(),
4642 PREDEF_DECL_TRANSLATION_UNIT_ID);
4643 RegisterPredefDecl(Context.ObjCIdDecl, PREDEF_DECL_OBJC_ID_ID);
4644 RegisterPredefDecl(Context.ObjCSelDecl, PREDEF_DECL_OBJC_SEL_ID);
4645 RegisterPredefDecl(Context.ObjCClassDecl, PREDEF_DECL_OBJC_CLASS_ID);
4646 RegisterPredefDecl(Context.ObjCProtocolClassDecl,
4647 PREDEF_DECL_OBJC_PROTOCOL_ID);
4648 RegisterPredefDecl(Context.Int128Decl, PREDEF_DECL_INT_128_ID);
4649 RegisterPredefDecl(Context.UInt128Decl, PREDEF_DECL_UNSIGNED_INT_128_ID);
4650 RegisterPredefDecl(Context.ObjCInstanceTypeDecl,
4651 PREDEF_DECL_OBJC_INSTANCETYPE_ID);
4652 RegisterPredefDecl(Context.BuiltinVaListDecl, PREDEF_DECL_BUILTIN_VA_LIST_ID);
4653 RegisterPredefDecl(Context.VaListTagDecl, PREDEF_DECL_VA_LIST_TAG);
4654 RegisterPredefDecl(Context.BuiltinMSVaListDecl,
4655 PREDEF_DECL_BUILTIN_MS_VA_LIST_ID);
4656 RegisterPredefDecl(Context.ExternCContext, PREDEF_DECL_EXTERN_C_CONTEXT_ID);
4657 RegisterPredefDecl(Context.MakeIntegerSeqDecl,
4658 PREDEF_DECL_MAKE_INTEGER_SEQ_ID);
4659 RegisterPredefDecl(Context.CFConstantStringTypeDecl,
4660 PREDEF_DECL_CF_CONSTANT_STRING_ID);
4661 RegisterPredefDecl(Context.CFConstantStringTagDecl,
4662 PREDEF_DECL_CF_CONSTANT_STRING_TAG_ID);
4663 RegisterPredefDecl(Context.TypePackElementDecl,
4664 PREDEF_DECL_TYPE_PACK_ELEMENT_ID);
4665
4666 // Build a record containing all of the tentative definitions in this file, in
4667 // TentativeDefinitions order. Generally, this record will be empty for
4668 // headers.
4669 RecordData TentativeDefinitions;
4670 AddLazyVectorDecls(*this, SemaRef.TentativeDefinitions, TentativeDefinitions);
4671
4672 // Build a record containing all of the file scoped decls in this file.
4673 RecordData UnusedFileScopedDecls;
4674 if (!isModule)
4675 AddLazyVectorDecls(*this, SemaRef.UnusedFileScopedDecls,
4676 UnusedFileScopedDecls);
4677
4678 // Build a record containing all of the delegating constructors we still need
4679 // to resolve.
4680 RecordData DelegatingCtorDecls;
4681 if (!isModule)
4682 AddLazyVectorDecls(*this, SemaRef.DelegatingCtorDecls, DelegatingCtorDecls);
4683
4684 // Write the set of weak, undeclared identifiers. We always write the
4685 // entire table, since later PCH files in a PCH chain are only interested in
4686 // the results at the end of the chain.
4687 RecordData WeakUndeclaredIdentifiers;
4688 for (auto &WeakUndeclaredIdentifier : SemaRef.WeakUndeclaredIdentifiers) {
4689 IdentifierInfo *II = WeakUndeclaredIdentifier.first;
4690 WeakInfo &WI = WeakUndeclaredIdentifier.second;
4691 AddIdentifierRef(II, WeakUndeclaredIdentifiers);
4692 AddIdentifierRef(WI.getAlias(), WeakUndeclaredIdentifiers);
4693 AddSourceLocation(WI.getLocation(), WeakUndeclaredIdentifiers);
4694 WeakUndeclaredIdentifiers.push_back(WI.getUsed());
4695 }
4696
4697 // Build a record containing all of the ext_vector declarations.
4698 RecordData ExtVectorDecls;
4699 AddLazyVectorDecls(*this, SemaRef.ExtVectorDecls, ExtVectorDecls);
4700
4701 // Build a record containing all of the VTable uses information.
4702 RecordData VTableUses;
4703 if (!SemaRef.VTableUses.empty()) {
4704 for (unsigned I = 0, N = SemaRef.VTableUses.size(); I != N; ++I) {
4705 AddDeclRef(SemaRef.VTableUses[I].first, VTableUses);
4706 AddSourceLocation(SemaRef.VTableUses[I].second, VTableUses);
4707 VTableUses.push_back(SemaRef.VTablesUsed[SemaRef.VTableUses[I].first]);
4708 }
4709 }
4710
4711 // Build a record containing all of the UnusedLocalTypedefNameCandidates.
4712 RecordData UnusedLocalTypedefNameCandidates;
4713 for (const TypedefNameDecl *TD : SemaRef.UnusedLocalTypedefNameCandidates)
4714 AddDeclRef(TD, UnusedLocalTypedefNameCandidates);
4715
4716 // Build a record containing all of pending implicit instantiations.
4717 RecordData PendingInstantiations;
4718 for (const auto &I : SemaRef.PendingInstantiations) {
4719 AddDeclRef(I.first, PendingInstantiations);
4720 AddSourceLocation(I.second, PendingInstantiations);
4721 }
4722 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4723, __extension__ __PRETTY_FUNCTION__))
4723 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4723, __extension__ __PRETTY_FUNCTION__))
;
4724
4725 // Build a record containing some declaration references.
4726 RecordData SemaDeclRefs;
4727 if (SemaRef.StdNamespace || SemaRef.StdBadAlloc || SemaRef.StdAlignValT) {
4728 AddDeclRef(SemaRef.getStdNamespace(), SemaDeclRefs);
4729 AddDeclRef(SemaRef.getStdBadAlloc(), SemaDeclRefs);
4730 AddDeclRef(SemaRef.getStdAlignValT(), SemaDeclRefs);
4731 }
4732
4733 RecordData CUDASpecialDeclRefs;
4734 if (Context.getcudaConfigureCallDecl()) {
4735 AddDeclRef(Context.getcudaConfigureCallDecl(), CUDASpecialDeclRefs);
4736 }
4737
4738 // Build a record containing all of the known namespaces.
4739 RecordData KnownNamespaces;
4740 for (const auto &I : SemaRef.KnownNamespaces) {
4741 if (!I.second)
4742 AddDeclRef(I.first, KnownNamespaces);
4743 }
4744
4745 // Build a record of all used, undefined objects that require definitions.
4746 RecordData UndefinedButUsed;
4747
4748 SmallVector<std::pair<NamedDecl *, SourceLocation>, 16> Undefined;
4749 SemaRef.getUndefinedButUsed(Undefined);
4750 for (const auto &I : Undefined) {
4751 AddDeclRef(I.first, UndefinedButUsed);
4752 AddSourceLocation(I.second, UndefinedButUsed);
4753 }
4754
4755 // Build a record containing all delete-expressions that we would like to
4756 // analyze later in AST.
4757 RecordData DeleteExprsToAnalyze;
4758
4759 for (const auto &DeleteExprsInfo :
4760 SemaRef.getMismatchingDeleteExpressions()) {
4761 AddDeclRef(DeleteExprsInfo.first, DeleteExprsToAnalyze);
4762 DeleteExprsToAnalyze.push_back(DeleteExprsInfo.second.size());
4763 for (const auto &DeleteLoc : DeleteExprsInfo.second) {
4764 AddSourceLocation(DeleteLoc.first, DeleteExprsToAnalyze);
4765 DeleteExprsToAnalyze.push_back(DeleteLoc.second);
4766 }
4767 }
4768
4769 // Write the control block
4770 WriteControlBlock(PP, Context, isysroot, OutputFile);
4771
4772 // Write the remaining AST contents.
4773 Stream.EnterSubblock(AST_BLOCK_ID, 5);
4774
4775 // This is so that older clang versions, before the introduction
4776 // of the control block, can read and reject the newer PCH format.
4777 {
4778 RecordData Record = {VERSION_MAJOR};
4779 Stream.EmitRecord(METADATA_OLD_FORMAT, Record);
4780 }
4781
4782 // Create a lexical update block containing all of the declarations in the
4783 // translation unit that do not come from other AST files.
4784 const TranslationUnitDecl *TU = Context.getTranslationUnitDecl();
4785 SmallVector<uint32_t, 128> NewGlobalKindDeclPairs;
4786 for (const auto *D : TU->noload_decls()) {
4787 if (!D->isFromASTFile()) {
4788 NewGlobalKindDeclPairs.push_back(D->getKind());
4789 NewGlobalKindDeclPairs.push_back(GetDeclRef(D));
4790 }
4791 }
4792
4793 auto Abv = std::make_shared<BitCodeAbbrev>();
4794 Abv->Add(llvm::BitCodeAbbrevOp(TU_UPDATE_LEXICAL));
4795 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4796 unsigned TuUpdateLexicalAbbrev = Stream.EmitAbbrev(std::move(Abv));
4797 {
4798 RecordData::value_type Record[] = {TU_UPDATE_LEXICAL};
4799 Stream.EmitRecordWithBlob(TuUpdateLexicalAbbrev, Record,
4800 bytes(NewGlobalKindDeclPairs));
4801 }
4802
4803 // And a visible updates block for the translation unit.
4804 Abv = std::make_shared<BitCodeAbbrev>();
4805 Abv->Add(llvm::BitCodeAbbrevOp(UPDATE_VISIBLE));
4806 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::VBR, 6));
4807 Abv->Add(llvm::BitCodeAbbrevOp(llvm::BitCodeAbbrevOp::Blob));
4808 UpdateVisibleAbbrev = Stream.EmitAbbrev(std::move(Abv));
4809 WriteDeclContextVisibleUpdate(TU);
4810
4811 // If we have any extern "C" names, write out a visible update for them.
4812 if (Context.ExternCContext)
4813 WriteDeclContextVisibleUpdate(Context.ExternCContext);
4814
4815 // If the translation unit has an anonymous namespace, and we don't already
4816 // have an update block for it, write it as an update block.
4817 // FIXME: Why do we not do this if there's already an update block?
4818 if (NamespaceDecl *NS = TU->getAnonymousNamespace()) {
4819 ASTWriter::UpdateRecord &Record = DeclUpdates[TU];
4820 if (Record.empty())
4821 Record.push_back(DeclUpdate(UPD_CXX_ADDED_ANONYMOUS_NAMESPACE, NS));
4822 }
4823
4824 // Add update records for all mangling numbers and static local numbers.
4825 // These aren't really update records, but this is a convenient way of
4826 // tagging this rare extra data onto the declarations.
4827 for (const auto &Number : Context.MangleNumbers)
4828 if (!Number.first->isFromASTFile())
4829 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_MANGLING_NUMBER,
4830 Number.second));
4831 for (const auto &Number : Context.StaticLocalNumbers)
4832 if (!Number.first->isFromASTFile())
4833 DeclUpdates[Number.first].push_back(DeclUpdate(UPD_STATIC_LOCAL_NUMBER,
4834 Number.second));
4835
4836 // Make sure visible decls, added to DeclContexts previously loaded from
4837 // an AST file, are registered for serialization. Likewise for template
4838 // specializations added to imported templates.
4839 for (const auto *I : DeclsToEmitEvenIfUnreferenced) {
4840 GetDeclRef(I);
4841 }
4842
4843 // Make sure all decls associated with an identifier are registered for
4844 // serialization, if we're storing decls with identifiers.
4845 if (!WritingModule || !getLangOpts().CPlusPlus) {
4846 llvm::SmallVector<const IdentifierInfo*, 256> IIs;
4847 for (const auto &ID : PP.getIdentifierTable()) {
4848 const IdentifierInfo *II = ID.second;
4849 if (!Chain || !II->isFromAST() || II->hasChangedSinceDeserialization())
4850 IIs.push_back(II);
4851 }
4852 // Sort the identifiers to visit based on their name.
4853 std::sort(IIs.begin(), IIs.end(), llvm::less_ptr<IdentifierInfo>());
4854 for (const IdentifierInfo *II : IIs) {
4855 for (IdentifierResolver::iterator D = SemaRef.IdResolver.begin(II),
4856 DEnd = SemaRef.IdResolver.end();
4857 D != DEnd; ++D) {
4858 GetDeclRef(*D);
4859 }
4860 }
4861 }
4862
4863 // For method pool in the module, if it contains an entry for a selector,
4864 // the entry should be complete, containing everything introduced by that
4865 // module and all modules it imports. It's possible that the entry is out of
4866 // date, so we need to pull in the new content here.
4867
4868 // It's possible that updateOutOfDateSelector can update SelectorIDs. To be
4869 // safe, we copy all selectors out.
4870 llvm::SmallVector<Selector, 256> AllSelectors;
4871 for (auto &SelectorAndID : SelectorIDs)
4872 AllSelectors.push_back(SelectorAndID.first);
4873 for (auto &Selector : AllSelectors)
4874 SemaRef.updateOutOfDateSelector(Selector);
4875
4876 // Form the record of special types.
4877 RecordData SpecialTypes;
4878 AddTypeRef(Context.getRawCFConstantStringType(), SpecialTypes);
4879 AddTypeRef(Context.getFILEType(), SpecialTypes);
4880 AddTypeRef(Context.getjmp_bufType(), SpecialTypes);
4881 AddTypeRef(Context.getsigjmp_bufType(), SpecialTypes);
4882 AddTypeRef(Context.ObjCIdRedefinitionType, SpecialTypes);
4883 AddTypeRef(Context.ObjCClassRedefinitionType, SpecialTypes);
4884 AddTypeRef(Context.ObjCSelRedefinitionType, SpecialTypes);
4885 AddTypeRef(Context.getucontext_tType(), SpecialTypes);
4886
4887 if (Chain) {
4888 // Write the mapping information describing our module dependencies and how
4889 // each of those modules were mapped into our own offset/ID space, so that
4890 // the reader can build the appropriate mapping to its own offset/ID space.
4891 // The map consists solely of a blob with the following format:
4892 // *(module-kind:i8
4893 // module-name-len:i16 module-name:len*i8
4894 // source-location-offset:i32
4895 // identifier-id:i32
4896 // preprocessed-entity-id:i32
4897 // macro-definition-id:i32
4898 // submodule-id:i32
4899 // selector-id:i32
4900 // declaration-id:i32
4901 // c++-base-specifiers-id:i32
4902 // type-id:i32)
4903 //
4904 // module-kind is the ModuleKind enum value. If it is MK_PrebuiltModule or
4905 // MK_ExplicitModule, then the module-name is the module name. Otherwise,
4906 // it is the module file name.
4907 auto Abbrev = std::make_shared<BitCodeAbbrev>();
4908 Abbrev->Add(BitCodeAbbrevOp(MODULE_OFFSET_MAP));
4909 Abbrev->Add(BitCodeAbbrevOp(BitCodeAbbrevOp::Blob));
4910 unsigned ModuleOffsetMapAbbrev = Stream.EmitAbbrev(std::move(Abbrev));
4911 SmallString<2048> Buffer;
4912 {
4913 llvm::raw_svector_ostream Out(Buffer);
4914 for (ModuleFile &M : Chain->ModuleMgr) {
4915 using namespace llvm::support;
4916
4917 endian::Writer<little> LE(Out);
4918 LE.write<uint8_t>(static_cast<uint8_t>(M.Kind));
4919 StringRef Name =
4920 M.Kind == MK_PrebuiltModule || M.Kind == MK_ExplicitModule
4921 ? M.ModuleName
4922 : M.FileName;
4923 LE.write<uint16_t>(Name.size());
4924 Out.write(Name.data(), Name.size());
4925
4926 // Note: if a base ID was uint max, it would not be possible to load
4927 // another module after it or have more than one entity inside it.
4928 uint32_t None = std::numeric_limits<uint32_t>::max();
4929
4930 auto writeBaseIDOrNone = [&](uint32_t BaseID, bool ShouldWrite) {
4931 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 4931, __extension__ __PRETTY_FUNCTION__))
;
4932 if (ShouldWrite)
4933 LE.write<uint32_t>(BaseID);
4934 else
4935 LE.write<uint32_t>(None);
4936 };
4937
4938 // These values should be unique within a chain, since they will be read
4939 // as keys into ContinuousRangeMaps.
4940 writeBaseIDOrNone(M.SLocEntryBaseOffset, M.LocalNumSLocEntries);
4941 writeBaseIDOrNone(M.BaseIdentifierID, M.LocalNumIdentifiers);
4942 writeBaseIDOrNone(M.BaseMacroID, M.LocalNumMacros);
4943 writeBaseIDOrNone(M.BasePreprocessedEntityID,
4944 M.NumPreprocessedEntities);
4945 writeBaseIDOrNone(M.BaseSubmoduleID, M.LocalNumSubmodules);
4946 writeBaseIDOrNone(M.BaseSelectorID, M.LocalNumSelectors);
4947 writeBaseIDOrNone(M.BaseDeclID, M.LocalNumDecls);
4948 writeBaseIDOrNone(M.BaseTypeIndex, M.LocalNumTypes);
4949 }
4950 }
4951 RecordData::value_type Record[] = {MODULE_OFFSET_MAP};
4952 Stream.EmitRecordWithBlob(ModuleOffsetMapAbbrev, Record,
4953 Buffer.data(), Buffer.size());
4954 }
4955
4956 RecordData DeclUpdatesOffsetsRecord;
4957
4958 // Keep writing types, declarations, and declaration update records
4959 // until we've emitted all of them.
4960 Stream.EnterSubblock(DECLTYPES_BLOCK_ID, /*bits for abbreviations*/5);
4961 WriteTypeAbbrevs();
4962 WriteDeclAbbrevs();
4963 do {
4964 WriteDeclUpdatesBlocks(DeclUpdatesOffsetsRecord);
4965 while (!DeclTypesToEmit.empty()) {
4966 DeclOrType DOT = DeclTypesToEmit.front();
4967 DeclTypesToEmit.pop();
4968 if (DOT.isType())
4969 WriteType(DOT.getType());
4970 else
4971 WriteDecl(Context, DOT.getDecl());
4972 }
4973 } while (!DeclUpdates.empty());
4974 Stream.ExitBlock();
4975
4976 DoneWritingDeclsAndTypes = true;
4977
4978 // These things can only be done once we've written out decls and types.
4979 WriteTypeDeclOffsets();
4980 if (!DeclUpdatesOffsetsRecord.empty())
4981 Stream.EmitRecord(DECL_UPDATE_OFFSETS, DeclUpdatesOffsetsRecord);
4982 WriteFileDeclIDsMap();
4983 WriteSourceManagerBlock(Context.getSourceManager(), PP);
4984 WriteComments();
4985 WritePreprocessor(PP, isModule);
4986 WriteHeaderSearch(PP.getHeaderSearchInfo());
4987 WriteSelectors(SemaRef);
4988 WriteReferencedSelectorsPool(SemaRef);
4989 WriteLateParsedTemplates(SemaRef);
4990 WriteIdentifierTable(PP, SemaRef.IdResolver, isModule);
4991 WriteFPPragmaOptions(SemaRef.getFPOptions());
4992 WriteOpenCLExtensions(SemaRef);
4993 WriteOpenCLExtensionTypes(SemaRef);
4994 WriteOpenCLExtensionDecls(SemaRef);
4995 WriteCUDAPragmas(SemaRef);
4996
4997 // If we're emitting a module, write out the submodule information.
4998 if (WritingModule)
4999 WriteSubmodules(WritingModule);
5000
5001 Stream.EmitRecord(SPECIAL_TYPES, SpecialTypes);
5002
5003 // Write the record containing external, unnamed definitions.
5004 if (!EagerlyDeserializedDecls.empty())
5005 Stream.EmitRecord(EAGERLY_DESERIALIZED_DECLS, EagerlyDeserializedDecls);
5006
5007 if (!ModularCodegenDecls.empty())
5008 Stream.EmitRecord(MODULAR_CODEGEN_DECLS, ModularCodegenDecls);
5009
5010 // Write the record containing tentative definitions.
5011 if (!TentativeDefinitions.empty())
5012 Stream.EmitRecord(TENTATIVE_DEFINITIONS, TentativeDefinitions);
5013
5014 // Write the record containing unused file scoped decls.
5015 if (!UnusedFileScopedDecls.empty())
5016 Stream.EmitRecord(UNUSED_FILESCOPED_DECLS, UnusedFileScopedDecls);
5017
5018 // Write the record containing weak undeclared identifiers.
5019 if (!WeakUndeclaredIdentifiers.empty())
5020 Stream.EmitRecord(WEAK_UNDECLARED_IDENTIFIERS,
5021 WeakUndeclaredIdentifiers);
5022
5023 // Write the record containing ext_vector type names.
5024 if (!ExtVectorDecls.empty())
5025 Stream.EmitRecord(EXT_VECTOR_DECLS, ExtVectorDecls);
5026
5027 // Write the record containing VTable uses information.
5028 if (!VTableUses.empty())
5029 Stream.EmitRecord(VTABLE_USES, VTableUses);
5030
5031 // Write the record containing potentially unused local typedefs.
5032 if (!UnusedLocalTypedefNameCandidates.empty())
5033 Stream.EmitRecord(UNUSED_LOCAL_TYPEDEF_NAME_CANDIDATES,
5034 UnusedLocalTypedefNameCandidates);
5035
5036 // Write the record containing pending implicit instantiations.
5037 if (!PendingInstantiations.empty())
5038 Stream.EmitRecord(PENDING_IMPLICIT_INSTANTIATIONS, PendingInstantiations);
5039
5040 // Write the record containing declaration references of Sema.
5041 if (!SemaDeclRefs.empty())
5042 Stream.EmitRecord(SEMA_DECL_REFS, SemaDeclRefs);
5043
5044 // Write the record containing CUDA-specific declaration references.
5045 if (!CUDASpecialDeclRefs.empty())
5046 Stream.EmitRecord(CUDA_SPECIAL_DECL_REFS, CUDASpecialDeclRefs);
5047
5048 // Write the delegating constructors.
5049 if (!DelegatingCtorDecls.empty())
5050 Stream.EmitRecord(DELEGATING_CTORS, DelegatingCtorDecls);
5051
5052 // Write the known namespaces.
5053 if (!KnownNamespaces.empty())
5054 Stream.EmitRecord(KNOWN_NAMESPACES, KnownNamespaces);
5055
5056 // Write the undefined internal functions and variables, and inline functions.
5057 if (!UndefinedButUsed.empty())
5058 Stream.EmitRecord(UNDEFINED_BUT_USED, UndefinedButUsed);
5059
5060 if (!DeleteExprsToAnalyze.empty())
5061 Stream.EmitRecord(DELETE_EXPRS_TO_ANALYZE, DeleteExprsToAnalyze);
5062
5063 // Write the visible updates to DeclContexts.
5064 for (auto *DC : UpdatedDeclContexts)
5065 WriteDeclContextVisibleUpdate(DC);
5066
5067 if (!WritingModule) {
5068 // Write the submodules that were imported, if any.
5069 struct ModuleInfo {
5070 uint64_t ID;
5071 Module *M;
5072 ModuleInfo(uint64_t ID, Module *M) : ID(ID), M(M) {}
5073 };
5074 llvm::SmallVector<ModuleInfo, 64> Imports;
5075 for (const auto *I : Context.local_imports()) {
5076 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5076, __extension__ __PRETTY_FUNCTION__))
;
5077 Imports.push_back(ModuleInfo(SubmoduleIDs[I->getImportedModule()],
5078 I->getImportedModule()));
5079 }
5080
5081 if (!Imports.empty()) {
5082 auto Cmp = [](const ModuleInfo &A, const ModuleInfo &B) {
5083 return A.ID < B.ID;
5084 };
5085 auto Eq = [](const ModuleInfo &A, const ModuleInfo &B) {
5086 return A.ID == B.ID;
5087 };
5088
5089 // Sort and deduplicate module IDs.
5090 std::sort(Imports.begin(), Imports.end(), Cmp);
5091 Imports.erase(std::unique(Imports.begin(), Imports.end(), Eq),
5092 Imports.end());
5093
5094 RecordData ImportedModules;
5095 for (const auto &Import : Imports) {
5096 ImportedModules.push_back(Import.ID);
5097 // FIXME: If the module has macros imported then later has declarations
5098 // imported, this location won't be the right one as a location for the
5099 // declaration imports.
5100 AddSourceLocation(PP.getModuleImportLoc(Import.M), ImportedModules);
5101 }
5102
5103 Stream.EmitRecord(IMPORTED_MODULES, ImportedModules);
5104 }
5105 }
5106
5107 WriteObjCCategories();
5108 if(!WritingModule) {
5109 WriteOptimizePragmaOptions(SemaRef);
5110 WriteMSStructPragmaOptions(SemaRef);
5111 WriteMSPointersToMembersPragmaOptions(SemaRef);
5112 }
5113 WritePackPragmaOptions(SemaRef);
5114
5115 // Some simple statistics
5116 RecordData::value_type Record[] = {
5117 NumStatements, NumMacros, NumLexicalDeclContexts, NumVisibleDeclContexts};
5118 Stream.EmitRecord(STATISTICS, Record);
5119 Stream.ExitBlock();
5120
5121 // Write the module file extension blocks.
5122 for (const auto &ExtWriter : ModuleFileExtensionWriters)
5123 WriteModuleFileExtension(SemaRef, *ExtWriter);
5124
5125 return writeUnhashedControlBlock(PP, Context);
5126}
5127
5128void ASTWriter::WriteDeclUpdatesBlocks(RecordDataImpl &OffsetsRecord) {
5129 if (DeclUpdates.empty())
5130 return;
5131
5132 DeclUpdateMap LocalUpdates;
5133 LocalUpdates.swap(DeclUpdates);
5134
5135 for (auto &DeclUpdate : LocalUpdates) {
5136 const Decl *D = DeclUpdate.first;
5137
5138 bool HasUpdatedBody = false;
5139 RecordData RecordData;
5140 ASTRecordWriter Record(*this, RecordData);
5141 for (auto &Update : DeclUpdate.second) {
5142 DeclUpdateKind Kind = (DeclUpdateKind)Update.getKind();
5143
5144 // An updated body is emitted last, so that the reader doesn't need
5145 // to skip over the lazy body to reach statements for other records.
5146 if (Kind == UPD_CXX_ADDED_FUNCTION_DEFINITION)
5147 HasUpdatedBody = true;
5148 else
5149 Record.push_back(Kind);
5150
5151 switch (Kind) {
5152 case UPD_CXX_ADDED_IMPLICIT_MEMBER:
5153 case UPD_CXX_ADDED_TEMPLATE_SPECIALIZATION:
5154 case UPD_CXX_ADDED_ANONYMOUS_NAMESPACE:
5155 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5155, __extension__ __PRETTY_FUNCTION__))
;
5156 Record.push_back(GetDeclRef(Update.getDecl()));
5157 break;
5158
5159 case UPD_CXX_ADDED_FUNCTION_DEFINITION:
5160 break;
5161
5162 case UPD_CXX_POINT_OF_INSTANTIATION:
5163 // FIXME: Do we need to also save the template specialization kind here?
5164 Record.AddSourceLocation(Update.getLoc());
5165 break;
5166
5167 case UPD_CXX_ADDED_VAR_DEFINITION: {
5168 const VarDecl *VD = cast<VarDecl>(D);
5169 Record.push_back(VD->isInline());
5170 Record.push_back(VD->isInlineSpecified());
5171 if (VD->getInit()) {
5172 Record.push_back(!VD->isInitKnownICE() ? 1
5173 : (VD->isInitICE() ? 3 : 2));
5174 Record.AddStmt(const_cast<Expr*>(VD->getInit()));
5175 } else {
5176 Record.push_back(0);
5177 }
5178 break;
5179 }
5180
5181 case UPD_CXX_INSTANTIATED_DEFAULT_ARGUMENT:
5182 Record.AddStmt(const_cast<Expr *>(
5183 cast<ParmVarDecl>(Update.getDecl())->getDefaultArg()));
5184 break;
5185
5186 case UPD_CXX_INSTANTIATED_DEFAULT_MEMBER_INITIALIZER:
5187 Record.AddStmt(
5188 cast<FieldDecl>(Update.getDecl())->getInClassInitializer());
5189 break;
5190
5191 case UPD_CXX_INSTANTIATED_CLASS_DEFINITION: {
5192 auto *RD = cast<CXXRecordDecl>(D);
5193 UpdatedDeclContexts.insert(RD->getPrimaryContext());
5194 Record.AddCXXDefinitionData(RD);
5195 Record.AddOffset(WriteDeclContextLexicalBlock(
5196 *Context, const_cast<CXXRecordDecl *>(RD)));
5197
5198 // This state is sometimes updated by template instantiation, when we
5199 // switch from the specialization referring to the template declaration
5200 // to it referring to the template definition.
5201 if (auto *MSInfo = RD->getMemberSpecializationInfo()) {
5202 Record.push_back(MSInfo->getTemplateSpecializationKind());
5203 Record.AddSourceLocation(MSInfo->getPointOfInstantiation());
5204 } else {
5205 auto *Spec = cast<ClassTemplateSpecializationDecl>(RD);
5206 Record.push_back(Spec->getTemplateSpecializationKind());
5207 Record.AddSourceLocation(Spec->getPointOfInstantiation());
5208
5209 // The instantiation might have been resolved to a partial
5210 // specialization. If so, record which one.
5211 auto From = Spec->getInstantiatedFrom();
5212 if (auto PartialSpec =
5213 From.dyn_cast<ClassTemplatePartialSpecializationDecl*>()) {
5214 Record.push_back(true);
5215 Record.AddDeclRef(PartialSpec);
5216 Record.AddTemplateArgumentList(
5217 &Spec->getTemplateInstantiationArgs());
5218 } else {
5219 Record.push_back(false);
5220 }
5221 }
5222 Record.push_back(RD->getTagKind());
5223 Record.AddSourceLocation(RD->getLocation());
5224 Record.AddSourceLocation(RD->getLocStart());
5225 Record.AddSourceRange(RD->getBraceRange());
5226
5227 // Instantiation may change attributes; write them all out afresh.
5228 Record.push_back(D->hasAttrs());
5229 if (D->hasAttrs())
5230 Record.AddAttributes(D->getAttrs());
5231
5232 // FIXME: Ensure we don't get here for explicit instantiations.
5233 break;
5234 }
5235
5236 case UPD_CXX_RESOLVED_DTOR_DELETE:
5237 Record.AddDeclRef(Update.getDecl());
5238 Record.AddStmt(cast<CXXDestructorDecl>(D)->getOperatorDeleteThisArg());
5239 break;
5240
5241 case UPD_CXX_RESOLVED_EXCEPTION_SPEC:
5242 addExceptionSpec(
5243 cast<FunctionDecl>(D)->getType()->castAs<FunctionProtoType>(),
5244 Record);
5245 break;
5246
5247 case UPD_CXX_DEDUCED_RETURN_TYPE:
5248 Record.push_back(GetOrCreateTypeID(Update.getType()));
5249 break;
5250
5251 case UPD_DECL_MARKED_USED:
5252 break;
5253
5254 case UPD_MANGLING_NUMBER:
5255 case UPD_STATIC_LOCAL_NUMBER:
5256 Record.push_back(Update.getNumber());
5257 break;
5258
5259 case UPD_DECL_MARKED_OPENMP_THREADPRIVATE:
5260 Record.AddSourceRange(
5261 D->getAttr<OMPThreadPrivateDeclAttr>()->getRange());
5262 break;
5263
5264 case UPD_DECL_MARKED_OPENMP_DECLARETARGET:
5265 Record.AddSourceRange(
5266 D->getAttr<OMPDeclareTargetDeclAttr>()->getRange());
5267 break;
5268
5269 case UPD_DECL_EXPORTED:
5270 Record.push_back(getSubmoduleID(Update.getModule()));
5271 break;
5272
5273 case UPD_ADDED_ATTR_TO_RECORD:
5274 Record.AddAttributes(llvm::makeArrayRef(Update.getAttr()));
5275 break;
5276 }
5277 }
5278
5279 if (HasUpdatedBody) {
5280 const auto *Def = cast<FunctionDecl>(D);
5281 Record.push_back(UPD_CXX_ADDED_FUNCTION_DEFINITION);
5282 Record.push_back(Def->isInlined());
5283 Record.AddSourceLocation(Def->getInnerLocStart());
5284 Record.AddFunctionDefinition(Def);
5285 }
5286
5287 OffsetsRecord.push_back(GetDeclRef(D));
5288 OffsetsRecord.push_back(Record.Emit(DECL_UPDATES));
5289 }
5290}
5291
5292void ASTWriter::AddSourceLocation(SourceLocation Loc, RecordDataImpl &Record) {
5293 uint32_t Raw = Loc.getRawEncoding();
5294 Record.push_back((Raw << 1) | (Raw >> 31));
5295}
5296
5297void ASTWriter::AddSourceRange(SourceRange Range, RecordDataImpl &Record) {
5298 AddSourceLocation(Range.getBegin(), Record);
5299 AddSourceLocation(Range.getEnd(), Record);
5300}
5301
5302void ASTRecordWriter::AddAPInt(const llvm::APInt &Value) {
5303 Record->push_back(Value.getBitWidth());
5304 const uint64_t *Words = Value.getRawData();
5305 Record->append(Words, Words + Value.getNumWords());
5306}
5307
5308void ASTRecordWriter::AddAPSInt(const llvm::APSInt &Value) {
5309 Record->push_back(Value.isUnsigned());
5310 AddAPInt(Value);
5311}
5312
5313void ASTRecordWriter::AddAPFloat(const llvm::APFloat &Value) {
5314 AddAPInt(Value.bitcastToAPInt());
5315}
5316
5317void ASTWriter::AddIdentifierRef(const IdentifierInfo *II, RecordDataImpl &Record) {
5318 Record.push_back(getIdentifierRef(II));
5319}
5320
5321IdentID ASTWriter::getIdentifierRef(const IdentifierInfo *II) {
5322 if (!II)
5323 return 0;
5324
5325 IdentID &ID = IdentifierIDs[II];
5326 if (ID == 0)
5327 ID = NextIdentID++;
5328 return ID;
5329}
5330
5331MacroID ASTWriter::getMacroRef(MacroInfo *MI, const IdentifierInfo *Name) {
5332 // Don't emit builtin macros like __LINE__ to the AST file unless they
5333 // have been redefined by the header (in which case they are not
5334 // isBuiltinMacro).
5335 if (!MI || MI->isBuiltinMacro())
5336 return 0;
5337
5338 MacroID &ID = MacroIDs[MI];
5339 if (ID == 0) {
5340 ID = NextMacroID++;
5341 MacroInfoToEmitData Info = { Name, MI, ID };
5342 MacroInfosToEmit.push_back(Info);
5343 }
5344 return ID;
5345}
5346
5347MacroID ASTWriter::getMacroID(MacroInfo *MI) {
5348 if (!MI || MI->isBuiltinMacro())
5349 return 0;
5350
5351 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5351, __extension__ __PRETTY_FUNCTION__))
;
5352 return MacroIDs[MI];
5353}
5354
5355uint64_t ASTWriter::getMacroDirectivesOffset(const IdentifierInfo *Name) {
5356 return IdentMacroDirectivesOffsetMap.lookup(Name);
5357}
5358
5359void ASTRecordWriter::AddSelectorRef(const Selector SelRef) {
5360 Record->push_back(Writer->getSelectorRef(SelRef));
5361}
5362
5363SelectorID ASTWriter::getSelectorRef(Selector Sel) {
5364 if (Sel.getAsOpaquePtr() == nullptr) {
5365 return 0;
5366 }
5367
5368 SelectorID SID = SelectorIDs[Sel];
5369 if (SID == 0 && Chain) {
5370 // This might trigger a ReadSelector callback, which will set the ID for
5371 // this selector.
5372 Chain->LoadSelector(Sel);
5373 SID = SelectorIDs[Sel];
5374 }
5375 if (SID == 0) {
5376 SID = NextSelectorID++;
5377 SelectorIDs[Sel] = SID;
5378 }
5379 return SID;
5380}
5381
5382void ASTRecordWriter::AddCXXTemporary(const CXXTemporary *Temp) {
5383 AddDeclRef(Temp->getDestructor());
5384}
5385
5386void ASTRecordWriter::AddTemplateArgumentLocInfo(
5387 TemplateArgument::ArgKind Kind, const TemplateArgumentLocInfo &Arg) {
5388 switch (Kind) {
5389 case TemplateArgument::Expression:
5390 AddStmt(Arg.getAsExpr());
5391 break;
5392 case TemplateArgument::Type:
5393 AddTypeSourceInfo(Arg.getAsTypeSourceInfo());
5394 break;
5395 case TemplateArgument::Template:
5396 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5397 AddSourceLocation(Arg.getTemplateNameLoc());
5398 break;
5399 case TemplateArgument::TemplateExpansion:
5400 AddNestedNameSpecifierLoc(Arg.getTemplateQualifierLoc());
5401 AddSourceLocation(Arg.getTemplateNameLoc());
5402 AddSourceLocation(Arg.getTemplateEllipsisLoc());
5403 break;
5404 case TemplateArgument::Null:
5405 case TemplateArgument::Integral:
5406 case TemplateArgument::Declaration:
5407 case TemplateArgument::NullPtr:
5408 case TemplateArgument::Pack:
5409 // FIXME: Is this right?
5410 break;
5411 }
5412}
5413
5414void ASTRecordWriter::AddTemplateArgumentLoc(const TemplateArgumentLoc &Arg) {
5415 AddTemplateArgument(Arg.getArgument());
5416
5417 if (Arg.getArgument().getKind() == TemplateArgument::Expression) {
5418 bool InfoHasSameExpr
5419 = Arg.getArgument().getAsExpr() == Arg.getLocInfo().getAsExpr();
5420 Record->push_back(InfoHasSameExpr);
5421 if (InfoHasSameExpr)
5422 return; // Avoid storing the same expr twice.
5423 }
5424 AddTemplateArgumentLocInfo(Arg.getArgument().getKind(), Arg.getLocInfo());
5425}
5426
5427void ASTRecordWriter::AddTypeSourceInfo(TypeSourceInfo *TInfo) {
5428 if (!TInfo) {
5429 AddTypeRef(QualType());
5430 return;
5431 }
5432
5433 AddTypeLoc(TInfo->getTypeLoc());
5434}
5435
5436void ASTRecordWriter::AddTypeLoc(TypeLoc TL) {
5437 AddTypeRef(TL.getType());
5438
5439 TypeLocWriter TLW(*this);
5440 for (; !TL.isNull(); TL = TL.getNextTypeLoc())
5441 TLW.Visit(TL);
5442}
5443
5444void ASTWriter::AddTypeRef(QualType T, RecordDataImpl &Record) {
5445 Record.push_back(GetOrCreateTypeID(T));
5446}
5447
5448TypeID ASTWriter::GetOrCreateTypeID(QualType T) {
5449 assert(Context)(static_cast <bool> (Context) ? void (0) : __assert_fail
("Context", "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5449, __extension__ __PRETTY_FUNCTION__))
;
5450 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5451 if (T.isNull())
5452 return TypeIdx();
5453 assert(!T.getLocalFastQualifiers())(static_cast <bool> (!T.getLocalFastQualifiers()) ? void
(0) : __assert_fail ("!T.getLocalFastQualifiers()", "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5453, __extension__ __PRETTY_FUNCTION__))
;
5454
5455 TypeIdx &Idx = TypeIdxs[T];
5456 if (Idx.getIndex() == 0) {
5457 if (DoneWritingDeclsAndTypes) {
5458 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5458, __extension__ __PRETTY_FUNCTION__))
;
5459 return TypeIdx();
5460 }
5461
5462 // We haven't seen this type before. Assign it a new ID and put it
5463 // into the queue of types to emit.
5464 Idx = TypeIdx(NextTypeID++);
5465 DeclTypesToEmit.push(T);
5466 }
5467 return Idx;
5468 });
5469}
5470
5471TypeID ASTWriter::getTypeID(QualType T) const {
5472 assert(Context)(static_cast <bool> (Context) ? void (0) : __assert_fail
("Context", "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5472, __extension__ __PRETTY_FUNCTION__))
;
5473 return MakeTypeID(*Context, T, [&](QualType T) -> TypeIdx {
5474 if (T.isNull())
5475 return TypeIdx();
5476 assert(!T.getLocalFastQualifiers())(static_cast <bool> (!T.getLocalFastQualifiers()) ? void
(0) : __assert_fail ("!T.getLocalFastQualifiers()", "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5476, __extension__ __PRETTY_FUNCTION__))
;
5477
5478 TypeIdxMap::const_iterator I = TypeIdxs.find(T);
5479 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5479, __extension__ __PRETTY_FUNCTION__))
;
5480 return I->second;
5481 });
5482}
5483
5484void ASTWriter::AddDeclRef(const Decl *D, RecordDataImpl &Record) {
5485 Record.push_back(GetDeclRef(D));
5486}
5487
5488DeclID ASTWriter::GetDeclRef(const Decl *D) {
5489 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5489, __extension__ __PRETTY_FUNCTION__))
;
5490
5491 if (!D) {
5492 return 0;
5493 }
5494
5495 // If D comes from an AST file, its declaration ID is already known and
5496 // fixed.
5497 if (D->isFromASTFile())
5498 return D->getGlobalID();
5499
5500 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5500, __extension__ __PRETTY_FUNCTION__))
;
5501 DeclID &ID = DeclIDs[D];
5502 if (ID == 0) {
5503 if (DoneWritingDeclsAndTypes) {
5504 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5504, __extension__ __PRETTY_FUNCTION__))
;
5505 return 0;
5506 }
5507
5508 // We haven't seen this declaration before. Give it a new ID and
5509 // enqueue it in the list of declarations to emit.
5510 ID = NextDeclID++;
5511 DeclTypesToEmit.push(const_cast<Decl *>(D));
5512 }
5513
5514 return ID;
5515}
5516
5517DeclID ASTWriter::getDeclID(const Decl *D) {
5518 if (!D)
5519 return 0;
5520
5521 // If D comes from an AST file, its declaration ID is already known and
5522 // fixed.
5523 if (D->isFromASTFile())
5524 return D->getGlobalID();
5525
5526 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5526, __extension__ __PRETTY_FUNCTION__))
;
5527 return DeclIDs[D];
5528}
5529
5530void ASTWriter::associateDeclWithFile(const Decl *D, DeclID ID) {
5531 assert(ID)(static_cast <bool> (ID) ? void (0) : __assert_fail ("ID"
, "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5531, __extension__ __PRETTY_FUNCTION__))
;
5532 assert(D)(static_cast <bool> (D) ? void (0) : __assert_fail ("D"
, "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5532, __extension__ __PRETTY_FUNCTION__))
;
5533
5534 SourceLocation Loc = D->getLocation();
5535 if (Loc.isInvalid())
5536 return;
5537
5538 // We only keep track of the file-level declarations of each file.
5539 if (!D->getLexicalDeclContext()->isFileContext())
5540 return;
5541 // FIXME: ParmVarDecls that are part of a function type of a parameter of
5542 // a function/objc method, should not have TU as lexical context.
5543 // TemplateTemplateParmDecls that are part of an alias template, should not
5544 // have TU as lexical context.
5545 if (isa<ParmVarDecl>(D) || isa<TemplateTemplateParmDecl>(D))
5546 return;
5547
5548 SourceManager &SM = Context->getSourceManager();
5549 SourceLocation FileLoc = SM.getFileLoc(Loc);
5550 assert(SM.isLocalSourceLocation(FileLoc))(static_cast <bool> (SM.isLocalSourceLocation(FileLoc))
? void (0) : __assert_fail ("SM.isLocalSourceLocation(FileLoc)"
, "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5550, __extension__ __PRETTY_FUNCTION__))
;
5551 FileID FID;
5552 unsigned Offset;
5553 std::tie(FID, Offset) = SM.getDecomposedLoc(FileLoc);
5554 if (FID.isInvalid())
5555 return;
5556 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5556, __extension__ __PRETTY_FUNCTION__))
;
5557
5558 DeclIDInFileInfo *&Info = FileDeclIDs[FID];
5559 if (!Info)
5560 Info = new DeclIDInFileInfo();
5561
5562 std::pair<unsigned, serialization::DeclID> LocDecl(Offset, ID);
5563 LocDeclIDsTy &Decls = Info->DeclIDs;
5564
5565 if (Decls.empty() || Decls.back().first <= Offset) {
5566 Decls.push_back(LocDecl);
5567 return;
5568 }
5569
5570 LocDeclIDsTy::iterator I =
5571 std::upper_bound(Decls.begin(), Decls.end(), LocDecl, llvm::less_first());
5572
5573 Decls.insert(I, LocDecl);
5574}
5575
5576void ASTRecordWriter::AddDeclarationName(DeclarationName Name) {
5577 // FIXME: Emit a stable enum for NameKind. 0 = Identifier etc.
5578 Record->push_back(Name.getNameKind());
5579 switch (Name.getNameKind()) {
5580 case DeclarationName::Identifier:
5581 AddIdentifierRef(Name.getAsIdentifierInfo());
5582 break;
5583
5584 case DeclarationName::ObjCZeroArgSelector:
5585 case DeclarationName::ObjCOneArgSelector:
5586 case DeclarationName::ObjCMultiArgSelector:
5587 AddSelectorRef(Name.getObjCSelector());
5588 break;
5589
5590 case DeclarationName::CXXConstructorName:
5591 case DeclarationName::CXXDestructorName:
5592 case DeclarationName::CXXConversionFunctionName:
5593 AddTypeRef(Name.getCXXNameType());
5594 break;
5595
5596 case DeclarationName::CXXDeductionGuideName:
5597 AddDeclRef(Name.getCXXDeductionGuideTemplate());
5598 break;
5599
5600 case DeclarationName::CXXOperatorName:
5601 Record->push_back(Name.getCXXOverloadedOperator());
5602 break;
5603
5604 case DeclarationName::CXXLiteralOperatorName:
5605 AddIdentifierRef(Name.getCXXLiteralIdentifier());
5606 break;
5607
5608 case DeclarationName::CXXUsingDirective:
5609 // No extra data to emit
5610 break;
5611 }
5612}
5613
5614unsigned ASTWriter::getAnonymousDeclarationNumber(const NamedDecl *D) {
5615 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5616, __extension__ __PRETTY_FUNCTION__))
5616 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5616, __extension__ __PRETTY_FUNCTION__))
;
5617
5618 // Number the anonymous declarations within this context, if we've not
5619 // already done so.
5620 auto It = AnonymousDeclarationNumbers.find(D);
5621 if (It == AnonymousDeclarationNumbers.end()) {
5622 auto *DC = D->getLexicalDeclContext();
5623 numberAnonymousDeclsWithin(DC, [&](const NamedDecl *ND, unsigned Number) {
5624 AnonymousDeclarationNumbers[ND] = Number;
5625 });
5626
5627 It = AnonymousDeclarationNumbers.find(D);
5628 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5629, __extension__ __PRETTY_FUNCTION__))
5629 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5629, __extension__ __PRETTY_FUNCTION__))
;
5630 }
5631
5632 return It->second;
5633}
5634
5635void ASTRecordWriter::AddDeclarationNameLoc(const DeclarationNameLoc &DNLoc,
5636 DeclarationName Name) {
5637 switch (Name.getNameKind()) {
5638 case DeclarationName::CXXConstructorName:
5639 case DeclarationName::CXXDestructorName:
5640 case DeclarationName::CXXConversionFunctionName:
5641 AddTypeSourceInfo(DNLoc.NamedType.TInfo);
5642 break;
5643
5644 case DeclarationName::CXXOperatorName:
5645 AddSourceLocation(SourceLocation::getFromRawEncoding(
5646 DNLoc.CXXOperatorName.BeginOpNameLoc));
5647 AddSourceLocation(
5648 SourceLocation::getFromRawEncoding(DNLoc.CXXOperatorName.EndOpNameLoc));
5649 break;
5650
5651 case DeclarationName::CXXLiteralOperatorName:
5652 AddSourceLocation(SourceLocation::getFromRawEncoding(
5653 DNLoc.CXXLiteralOperatorName.OpNameLoc));
5654 break;
5655
5656 case DeclarationName::Identifier:
5657 case DeclarationName::ObjCZeroArgSelector:
5658 case DeclarationName::ObjCOneArgSelector:
5659 case DeclarationName::ObjCMultiArgSelector:
5660 case DeclarationName::CXXUsingDirective:
5661 case DeclarationName::CXXDeductionGuideName:
5662 break;
5663 }
5664}
5665
5666void ASTRecordWriter::AddDeclarationNameInfo(
5667 const DeclarationNameInfo &NameInfo) {
5668 AddDeclarationName(NameInfo.getName());
5669 AddSourceLocation(NameInfo.getLoc());
5670 AddDeclarationNameLoc(NameInfo.getInfo(), NameInfo.getName());
5671}
5672
5673void ASTRecordWriter::AddQualifierInfo(const QualifierInfo &Info) {
5674 AddNestedNameSpecifierLoc(Info.QualifierLoc);
5675 Record->push_back(Info.NumTemplParamLists);
5676 for (unsigned i = 0, e = Info.NumTemplParamLists; i != e; ++i)
5677 AddTemplateParameterList(Info.TemplParamLists[i]);
5678}
5679
5680void ASTRecordWriter::AddNestedNameSpecifier(NestedNameSpecifier *NNS) {
5681 // Nested name specifiers usually aren't too long. I think that 8 would
5682 // typically accommodate the vast majority.
5683 SmallVector<NestedNameSpecifier *, 8> NestedNames;
5684
5685 // Push each of the NNS's onto a stack for serialization in reverse order.
5686 while (NNS) {
5687 NestedNames.push_back(NNS);
5688 NNS = NNS->getPrefix();
5689 }
5690
5691 Record->push_back(NestedNames.size());
5692 while(!NestedNames.empty()) {
5693 NNS = NestedNames.pop_back_val();
5694 NestedNameSpecifier::SpecifierKind Kind = NNS->getKind();
5695 Record->push_back(Kind);
5696 switch (Kind) {
5697 case NestedNameSpecifier::Identifier:
5698 AddIdentifierRef(NNS->getAsIdentifier());
5699 break;
5700
5701 case NestedNameSpecifier::Namespace:
5702 AddDeclRef(NNS->getAsNamespace());
5703 break;
5704
5705 case NestedNameSpecifier::NamespaceAlias:
5706 AddDeclRef(NNS->getAsNamespaceAlias());
5707 break;
5708
5709 case NestedNameSpecifier::TypeSpec:
5710 case NestedNameSpecifier::TypeSpecWithTemplate:
5711 AddTypeRef(QualType(NNS->getAsType(), 0));
5712 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5713 break;
5714
5715 case NestedNameSpecifier::Global:
5716 // Don't need to write an associated value.
5717 break;
5718
5719 case NestedNameSpecifier::Super:
5720 AddDeclRef(NNS->getAsRecordDecl());
5721 break;
5722 }
5723 }
5724}
5725
5726void ASTRecordWriter::AddNestedNameSpecifierLoc(NestedNameSpecifierLoc NNS) {
5727 // Nested name specifiers usually aren't too long. I think that 8 would
5728 // typically accommodate the vast majority.
5729 SmallVector<NestedNameSpecifierLoc , 8> NestedNames;
5730
5731 // Push each of the nested-name-specifiers's onto a stack for
5732 // serialization in reverse order.
5733 while (NNS) {
5734 NestedNames.push_back(NNS);
5735 NNS = NNS.getPrefix();
5736 }
5737
5738 Record->push_back(NestedNames.size());
5739 while(!NestedNames.empty()) {
5740 NNS = NestedNames.pop_back_val();
5741 NestedNameSpecifier::SpecifierKind Kind
5742 = NNS.getNestedNameSpecifier()->getKind();
5743 Record->push_back(Kind);
5744 switch (Kind) {
5745 case NestedNameSpecifier::Identifier:
5746 AddIdentifierRef(NNS.getNestedNameSpecifier()->getAsIdentifier());
5747 AddSourceRange(NNS.getLocalSourceRange());
5748 break;
5749
5750 case NestedNameSpecifier::Namespace:
5751 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespace());
5752 AddSourceRange(NNS.getLocalSourceRange());
5753 break;
5754
5755 case NestedNameSpecifier::NamespaceAlias:
5756 AddDeclRef(NNS.getNestedNameSpecifier()->getAsNamespaceAlias());
5757 AddSourceRange(NNS.getLocalSourceRange());
5758 break;
5759
5760 case NestedNameSpecifier::TypeSpec:
5761 case NestedNameSpecifier::TypeSpecWithTemplate:
5762 Record->push_back(Kind == NestedNameSpecifier::TypeSpecWithTemplate);
5763 AddTypeLoc(NNS.getTypeLoc());
5764 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5765 break;
5766
5767 case NestedNameSpecifier::Global:
5768 AddSourceLocation(NNS.getLocalSourceRange().getEnd());
5769 break;
5770
5771 case NestedNameSpecifier::Super:
5772 AddDeclRef(NNS.getNestedNameSpecifier()->getAsRecordDecl());
5773 AddSourceRange(NNS.getLocalSourceRange());
5774 break;
5775 }
5776 }
5777}
5778
5779void ASTRecordWriter::AddTemplateName(TemplateName Name) {
5780 TemplateName::NameKind Kind = Name.getKind();
5781 Record->push_back(Kind);
5782 switch (Kind) {
5783 case TemplateName::Template:
5784 AddDeclRef(Name.getAsTemplateDecl());
5785 break;
5786
5787 case TemplateName::OverloadedTemplate: {
5788 OverloadedTemplateStorage *OvT = Name.getAsOverloadedTemplate();
5789 Record->push_back(OvT->size());
5790 for (const auto &I : *OvT)
5791 AddDeclRef(I);
5792 break;
5793 }
5794
5795 case TemplateName::QualifiedTemplate: {
5796 QualifiedTemplateName *QualT = Name.getAsQualifiedTemplateName();
5797 AddNestedNameSpecifier(QualT->getQualifier());
5798 Record->push_back(QualT->hasTemplateKeyword());
5799 AddDeclRef(QualT->getTemplateDecl());
5800 break;
5801 }
5802
5803 case TemplateName::DependentTemplate: {
5804 DependentTemplateName *DepT = Name.getAsDependentTemplateName();
5805 AddNestedNameSpecifier(DepT->getQualifier());
5806 Record->push_back(DepT->isIdentifier());
5807 if (DepT->isIdentifier())
5808 AddIdentifierRef(DepT->getIdentifier());
5809 else
5810 Record->push_back(DepT->getOperator());
5811 break;
5812 }
5813
5814 case TemplateName::SubstTemplateTemplateParm: {
5815 SubstTemplateTemplateParmStorage *subst
5816 = Name.getAsSubstTemplateTemplateParm();
5817 AddDeclRef(subst->getParameter());
5818 AddTemplateName(subst->getReplacement());
5819 break;
5820 }
5821
5822 case TemplateName::SubstTemplateTemplateParmPack: {
5823 SubstTemplateTemplateParmPackStorage *SubstPack
5824 = Name.getAsSubstTemplateTemplateParmPack();
5825 AddDeclRef(SubstPack->getParameterPack());
5826 AddTemplateArgument(SubstPack->getArgumentPack());
5827 break;
5828 }
5829 }
5830}
5831
5832void ASTRecordWriter::AddTemplateArgument(const TemplateArgument &Arg) {
5833 Record->push_back(Arg.getKind());
5834 switch (Arg.getKind()) {
5835 case TemplateArgument::Null:
5836 break;
5837 case TemplateArgument::Type:
5838 AddTypeRef(Arg.getAsType());
5839 break;
5840 case TemplateArgument::Declaration:
5841 AddDeclRef(Arg.getAsDecl());
5842 AddTypeRef(Arg.getParamTypeForDecl());
5843 break;
5844 case TemplateArgument::NullPtr:
5845 AddTypeRef(Arg.getNullPtrType());
5846 break;
5847 case TemplateArgument::Integral:
5848 AddAPSInt(Arg.getAsIntegral());
5849 AddTypeRef(Arg.getIntegralType());
5850 break;
5851 case TemplateArgument::Template:
5852 AddTemplateName(Arg.getAsTemplateOrTemplatePattern());
5853 break;
5854 case TemplateArgument::TemplateExpansion:
5855 AddTemplateName(Arg.getAsTemplateOrTemplatePattern());
5856 if (Optional<unsigned> NumExpansions = Arg.getNumTemplateExpansions())
5857 Record->push_back(*NumExpansions + 1);
5858 else
5859 Record->push_back(0);
5860 break;
5861 case TemplateArgument::Expression:
5862 AddStmt(Arg.getAsExpr());
5863 break;
5864 case TemplateArgument::Pack:
5865 Record->push_back(Arg.pack_size());
5866 for (const auto &P : Arg.pack_elements())
5867 AddTemplateArgument(P);
5868 break;
5869 }
5870}
5871
5872void ASTRecordWriter::AddTemplateParameterList(
5873 const TemplateParameterList *TemplateParams) {
5874 assert(TemplateParams && "No TemplateParams!")(static_cast <bool> (TemplateParams && "No TemplateParams!"
) ? void (0) : __assert_fail ("TemplateParams && \"No TemplateParams!\""
, "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5874, __extension__ __PRETTY_FUNCTION__))
;
5875 AddSourceLocation(TemplateParams->getTemplateLoc());
5876 AddSourceLocation(TemplateParams->getLAngleLoc());
5877 AddSourceLocation(TemplateParams->getRAngleLoc());
5878 // TODO: Concepts
5879 Record->push_back(TemplateParams->size());
5880 for (const auto &P : *TemplateParams)
5881 AddDeclRef(P);
5882}
5883
5884/// \brief Emit a template argument list.
5885void ASTRecordWriter::AddTemplateArgumentList(
5886 const TemplateArgumentList *TemplateArgs) {
5887 assert(TemplateArgs && "No TemplateArgs!")(static_cast <bool> (TemplateArgs && "No TemplateArgs!"
) ? void (0) : __assert_fail ("TemplateArgs && \"No TemplateArgs!\""
, "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5887, __extension__ __PRETTY_FUNCTION__))
;
5888 Record->push_back(TemplateArgs->size());
5889 for (int i = 0, e = TemplateArgs->size(); i != e; ++i)
5890 AddTemplateArgument(TemplateArgs->get(i));
5891}
5892
5893void ASTRecordWriter::AddASTTemplateArgumentListInfo(
5894 const ASTTemplateArgumentListInfo *ASTTemplArgList) {
5895 assert(ASTTemplArgList && "No ASTTemplArgList!")(static_cast <bool> (ASTTemplArgList && "No ASTTemplArgList!"
) ? void (0) : __assert_fail ("ASTTemplArgList && \"No ASTTemplArgList!\""
, "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 5895, __extension__ __PRETTY_FUNCTION__))
;
5896 AddSourceLocation(ASTTemplArgList->LAngleLoc);
5897 AddSourceLocation(ASTTemplArgList->RAngleLoc);
5898 Record->push_back(ASTTemplArgList->NumTemplateArgs);
5899 const TemplateArgumentLoc *TemplArgs = ASTTemplArgList->getTemplateArgs();
5900 for (int i = 0, e = ASTTemplArgList->NumTemplateArgs; i != e; ++i)
5901 AddTemplateArgumentLoc(TemplArgs[i]);
5902}
5903
5904void ASTRecordWriter::AddUnresolvedSet(const ASTUnresolvedSet &Set) {
5905 Record->push_back(Set.size());
5906 for (ASTUnresolvedSet::const_iterator
5907 I = Set.begin(), E = Set.end(); I != E; ++I) {
5908 AddDeclRef(I.getDecl());
5909 Record->push_back(I.getAccess());
5910 }
5911}
5912
5913// FIXME: Move this out of the main ASTRecordWriter interface.
5914void ASTRecordWriter::AddCXXBaseSpecifier(const CXXBaseSpecifier &Base) {
5915 Record->push_back(Base.isVirtual());
5916 Record->push_back(Base.isBaseOfClass());
5917 Record->push_back(Base.getAccessSpecifierAsWritten());
5918 Record->push_back(Base.getInheritConstructors());
5919 AddTypeSourceInfo(Base.getTypeSourceInfo());
5920 AddSourceRange(Base.getSourceRange());
5921 AddSourceLocation(Base.isPackExpansion()? Base.getEllipsisLoc()
5922 : SourceLocation());
5923}
5924
5925static uint64_t EmitCXXBaseSpecifiers(ASTWriter &W,
5926 ArrayRef<CXXBaseSpecifier> Bases) {
5927 ASTWriter::RecordData Record;
5928 ASTRecordWriter Writer(W, Record);
5929 Writer.push_back(Bases.size());
5930
5931 for (auto &Base : Bases)
5932 Writer.AddCXXBaseSpecifier(Base);
5933
5934 return Writer.Emit(serialization::DECL_CXX_BASE_SPECIFIERS);
5935}
5936
5937// FIXME: Move this out of the main ASTRecordWriter interface.
5938void ASTRecordWriter::AddCXXBaseSpecifiers(ArrayRef<CXXBaseSpecifier> Bases) {
5939 AddOffset(EmitCXXBaseSpecifiers(*Writer, Bases));
5940}
5941
5942static uint64_t
5943EmitCXXCtorInitializers(ASTWriter &W,
5944 ArrayRef<CXXCtorInitializer *> CtorInits) {
5945 ASTWriter::RecordData Record;
5946 ASTRecordWriter Writer(W, Record);
5947 Writer.push_back(CtorInits.size());
5948
5949 for (auto *Init : CtorInits) {
5950 if (Init->isBaseInitializer()) {
5951 Writer.push_back(CTOR_INITIALIZER_BASE);
5952 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5953 Writer.push_back(Init->isBaseVirtual());
5954 } else if (Init->isDelegatingInitializer()) {
5955 Writer.push_back(CTOR_INITIALIZER_DELEGATING);
5956 Writer.AddTypeSourceInfo(Init->getTypeSourceInfo());
5957 } else if (Init->isMemberInitializer()){
5958 Writer.push_back(CTOR_INITIALIZER_MEMBER);
5959 Writer.AddDeclRef(Init->getMember());
5960 } else {
5961 Writer.push_back(CTOR_INITIALIZER_INDIRECT_MEMBER);
5962 Writer.AddDeclRef(Init->getIndirectMember());
5963 }
5964
5965 Writer.AddSourceLocation(Init->getMemberLocation());
5966 Writer.AddStmt(Init->getInit());
5967 Writer.AddSourceLocation(Init->getLParenLoc());
5968 Writer.AddSourceLocation(Init->getRParenLoc());
5969 Writer.push_back(Init->isWritten());
5970 if (Init->isWritten())
5971 Writer.push_back(Init->getSourceOrder());
5972 }
5973
5974 return Writer.Emit(serialization::DECL_CXX_CTOR_INITIALIZERS);
5975}
5976
5977// FIXME: Move this out of the main ASTRecordWriter interface.
5978void ASTRecordWriter::AddCXXCtorInitializers(
5979 ArrayRef<CXXCtorInitializer *> CtorInits) {
5980 AddOffset(EmitCXXCtorInitializers(*Writer, CtorInits));
5981}
5982
5983void ASTRecordWriter::AddCXXDefinitionData(const CXXRecordDecl *D) {
5984 auto &Data = D->data();
5985 Record->push_back(Data.IsLambda);
5986 Record->push_back(Data.UserDeclaredConstructor);
5987 Record->push_back(Data.UserDeclaredSpecialMembers);
5988 Record->push_back(Data.Aggregate);
5989 Record->push_back(Data.PlainOldData);
5990 Record->push_back(Data.Empty);
5991 Record->push_back(Data.Polymorphic);
5992 Record->push_back(Data.Abstract);
5993 Record->push_back(Data.IsStandardLayout);
5994 Record->push_back(Data.HasNoNonEmptyBases);
5995 Record->push_back(Data.HasPrivateFields);
5996 Record->push_back(Data.HasProtectedFields);
5997 Record->push_back(Data.HasPublicFields);
5998 Record->push_back(Data.HasMutableFields);
5999 Record->push_back(Data.HasVariantMembers);
6000 Record->push_back(Data.HasOnlyCMembers);
6001 Record->push_back(Data.HasInClassInitializer);
6002 Record->push_back(Data.HasUninitializedReferenceMember);
6003 Record->push_back(Data.HasUninitializedFields);
6004 Record->push_back(Data.HasInheritedConstructor);
6005 Record->push_back(Data.HasInheritedAssignment);
6006 Record->push_back(Data.NeedOverloadResolutionForCopyConstructor);
6007 Record->push_back(Data.NeedOverloadResolutionForMoveConstructor);
6008 Record->push_back(Data.NeedOverloadResolutionForMoveAssignment);
6009 Record->push_back(Data.NeedOverloadResolutionForDestructor);
6010 Record->push_back(Data.DefaultedCopyConstructorIsDeleted);
6011 Record->push_back(Data.DefaultedMoveConstructorIsDeleted);
6012 Record->push_back(Data.DefaultedMoveAssignmentIsDeleted);
6013 Record->push_back(Data.DefaultedDestructorIsDeleted);
6014 Record->push_back(Data.HasTrivialSpecialMembers);
6015 Record->push_back(Data.HasTrivialSpecialMembersForCall);
6016 Record->push_back(Data.DeclaredNonTrivialSpecialMembers);
6017 Record->push_back(Data.DeclaredNonTrivialSpecialMembersForCall);
6018 Record->push_back(Data.HasIrrelevantDestructor);
6019 Record->push_back(Data.HasConstexprNonCopyMoveConstructor);
6020 Record->push_back(Data.HasDefaultedDefaultConstructor);
6021 Record->push_back(Data.CanPassInRegisters);
6022 Record->push_back(Data.DefaultedDefaultConstructorIsConstexpr);
6023 Record->push_back(Data.HasConstexprDefaultConstructor);
6024 Record->push_back(Data.HasNonLiteralTypeFieldsOrBases);
6025 Record->push_back(Data.ComputedVisibleConversions);
6026 Record->push_back(Data.UserProvidedDefaultConstructor);
6027 Record->push_back(Data.DeclaredSpecialMembers);
6028 Record->push_back(Data.ImplicitCopyConstructorCanHaveConstParamForVBase);
6029 Record->push_back(Data.ImplicitCopyConstructorCanHaveConstParamForNonVBase);
6030 Record->push_back(Data.ImplicitCopyAssignmentHasConstParam);
6031 Record->push_back(Data.HasDeclaredCopyConstructorWithConstParam);
6032 Record->push_back(Data.HasDeclaredCopyAssignmentWithConstParam);
6033
6034 // getODRHash will compute the ODRHash if it has not been previously computed.
6035 Record->push_back(D->getODRHash());
6036 bool ModulesDebugInfo = Writer->Context->getLangOpts().ModulesDebugInfo &&
6037 Writer->WritingModule && !D->isDependentType();
6038 Record->push_back(ModulesDebugInfo);
6039 if (ModulesDebugInfo)
6040 Writer->ModularCodegenDecls.push_back(Writer->GetDeclRef(D));
6041
6042 // IsLambda bit is already saved.
6043
6044 Record->push_back(Data.NumBases);
6045 if (Data.NumBases > 0)
6046 AddCXXBaseSpecifiers(Data.bases());
6047
6048 // FIXME: Make VBases lazily computed when needed to avoid storing them.
6049 Record->push_back(Data.NumVBases);
6050 if (Data.NumVBases > 0)
6051 AddCXXBaseSpecifiers(Data.vbases());
6052
6053 AddUnresolvedSet(Data.Conversions.get(*Writer->Context));
6054 AddUnresolvedSet(Data.VisibleConversions.get(*Writer->Context));
6055 // Data.Definition is the owning decl, no need to write it.
6056 AddDeclRef(D->getFirstFriend());
6057
6058 // Add lambda-specific data.
6059 if (Data.IsLambda) {
6060 auto &Lambda = D->getLambdaData();
6061 Record->push_back(Lambda.Dependent);
6062 Record->push_back(Lambda.IsGenericLambda);
6063 Record->push_back(Lambda.CaptureDefault);
6064 Record->push_back(Lambda.NumCaptures);
6065 Record->push_back(Lambda.NumExplicitCaptures);
6066 Record->push_back(Lambda.ManglingNumber);
6067 AddDeclRef(D->getLambdaContextDecl());
6068 AddTypeSourceInfo(Lambda.MethodTyInfo);
6069 for (unsigned I = 0, N = Lambda.NumCaptures; I != N; ++I) {
6070 const LambdaCapture &Capture = Lambda.Captures[I];
6071 AddSourceLocation(Capture.getLocation());
6072 Record->push_back(Capture.isImplicit());
6073 Record->push_back(Capture.getCaptureKind());
6074 switch (Capture.getCaptureKind()) {
6075 case LCK_StarThis:
6076 case LCK_This:
6077 case LCK_VLAType:
6078 break;
6079 case LCK_ByCopy:
6080 case LCK_ByRef:
6081 VarDecl *Var =
6082 Capture.capturesVariable() ? Capture.getCapturedVar() : nullptr;
6083 AddDeclRef(Var);
6084 AddSourceLocation(Capture.isPackExpansion() ? Capture.getEllipsisLoc()
6085 : SourceLocation());
6086 break;
6087 }
6088 }
6089 }
6090}
6091
6092void ASTWriter::ReaderInitialized(ASTReader *Reader) {
6093 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6093, __extension__ __PRETTY_FUNCTION__))
;
6094 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6094, __extension__ __PRETTY_FUNCTION__))
;
6095 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6101, __extension__ __PRETTY_FUNCTION__))
6096 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6101, __extension__ __PRETTY_FUNCTION__))
6097 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6101, __extension__ __PRETTY_FUNCTION__))
6098 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6101, __extension__ __PRETTY_FUNCTION__))
6099 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6101, __extension__ __PRETTY_FUNCTION__))
6100 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6101, __extension__ __PRETTY_FUNCTION__))
6101 "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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6101, __extension__ __PRETTY_FUNCTION__))
;
6102
6103 Chain = Reader;
6104
6105 // Note, this will get called multiple times, once one the reader starts up
6106 // and again each time it's done reading a PCH or module.
6107 FirstDeclID = NUM_PREDEF_DECL_IDS + Chain->getTotalNumDecls();
6108 FirstTypeID = NUM_PREDEF_TYPE_IDS + Chain->getTotalNumTypes();
6109 FirstIdentID = NUM_PREDEF_IDENT_IDS + Chain->getTotalNumIdentifiers();
6110 FirstMacroID = NUM_PREDEF_MACRO_IDS + Chain->getTotalNumMacros();
6111 FirstSubmoduleID = NUM_PREDEF_SUBMODULE_IDS + Chain->getTotalNumSubmodules();
6112 FirstSelectorID = NUM_PREDEF_SELECTOR_IDS + Chain->getTotalNumSelectors();
6113 NextDeclID = FirstDeclID;
6114 NextTypeID = FirstTypeID;
6115 NextIdentID = FirstIdentID;
6116 NextMacroID = FirstMacroID;
6117 NextSelectorID = FirstSelectorID;
6118 NextSubmoduleID = FirstSubmoduleID;
6119}
6120
6121void ASTWriter::IdentifierRead(IdentID ID, IdentifierInfo *II) {
6122 // Always keep the highest ID. See \p TypeRead() for more information.
6123 IdentID &StoredID = IdentifierIDs[II];
6124 if (ID > StoredID)
6125 StoredID = ID;
6126}
6127
6128void ASTWriter::MacroRead(serialization::MacroID ID, MacroInfo *MI) {
6129 // Always keep the highest ID. See \p TypeRead() for more information.
6130 MacroID &StoredID = MacroIDs[MI];
6131 if (ID > StoredID)
6132 StoredID = ID;
6133}
6134
6135void ASTWriter::TypeRead(TypeIdx Idx, QualType T) {
6136 // Always take the highest-numbered type index. This copes with an interesting
6137 // case for chained AST writing where we schedule writing the type and then,
6138 // later, deserialize the type from another AST. In this case, we want to
6139 // keep the higher-numbered entry so that we can properly write it out to
6140 // the AST file.
6141 TypeIdx &StoredIdx = TypeIdxs[T];
6142 if (Idx.getIndex() >= StoredIdx.getIndex())
6143 StoredIdx = Idx;
6144}
6145
6146void ASTWriter::SelectorRead(SelectorID ID, Selector S) {
6147 // Always keep the highest ID. See \p TypeRead() for more information.
6148 SelectorID &StoredID = SelectorIDs[S];
6149 if (ID > StoredID)
6150 StoredID = ID;
6151}
6152
6153void ASTWriter::MacroDefinitionRead(serialization::PreprocessedEntityID ID,
6154 MacroDefinitionRecord *MD) {
6155 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6155, __extension__ __PRETTY_FUNCTION__))
;
6156 MacroDefinitions[MD] = ID;
6157}
6158
6159void ASTWriter::ModuleRead(serialization::SubmoduleID ID, Module *Mod) {
6160 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6160, __extension__ __PRETTY_FUNCTION__))
;
6161 SubmoduleIDs[Mod] = ID;
6162}
6163
6164void ASTWriter::CompletedTagDefinition(const TagDecl *D) {
6165 if (Chain && Chain->isProcessingUpdateRecords()) return;
6166 assert(D->isCompleteDefinition())(static_cast <bool> (D->isCompleteDefinition()) ? void
(0) : __assert_fail ("D->isCompleteDefinition()", "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6166, __extension__ __PRETTY_FUNCTION__))
;
6167 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~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6167, __extension__ __PRETTY_FUNCTION__))
;
6168 if (auto *RD = dyn_cast<CXXRecordDecl>(D)) {
6169 // We are interested when a PCH decl is modified.
6170 if (RD->isFromASTFile()) {
6171 // A forward reference was mutated into a definition. Rewrite it.
6172 // FIXME: This happens during template instantiation, should we
6173 // have created a new definition decl instead ?
6174 assert(isTemplateInstantiation(RD->getTemplateSpecializationKind()) &&(static_cast <bool> (isTemplateInstantiation(RD->getTemplateSpecializationKind
()) && "completed a tag from another module but not by instantiation?"
) ? void (0) : __assert_fail ("isTemplateInstantiation(RD->getTemplateSpecializationKind()) && \"completed a tag from another module but not by instantiation?\""
, "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6175, __extension__ __PRETTY_FUNCTION__))
6175 "completed a tag from another module but not by instantiation?")(static_cast <bool> (isTemplateInstantiation(RD->getTemplateSpecializationKind
()) && "completed a tag from another module but not by instantiation?"
) ? void (0) : __assert_fail ("isTemplateInstantiation(RD->getTemplateSpecializationKind()) && \"completed a tag from another module but not by instantiation?\""
, "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6175, __extension__ __PRETTY_FUNCTION__))
;
6176 DeclUpdates[RD].push_back(
6177 DeclUpdate(UPD_CXX_INSTANTIATED_CLASS_DEFINITION));
6178 }
6179 }
6180}
6181
6182static bool isImportedDeclContext(ASTReader *Chain, const Decl *D) {
6183 if (D->isFromASTFile())
6184 return true;
6185
6186 // The predefined __va_list_tag struct is imported if we imported any decls.
6187 // FIXME: This is a gross hack.
6188 return D == D->getASTContext().getVaListTagDecl();
6189}
6190
6191void ASTWriter::AddedVisibleDecl(const DeclContext *DC, const Decl *D) {
6192 if (Chain && Chain->isProcessingUpdateRecords()) return;
6193 assert(DC->isLookupContext() &&(static_cast <bool> (DC->isLookupContext() &&
"Should not add lookup results to non-lookup contexts!") ? void
(0) : __assert_fail ("DC->isLookupContext() && \"Should not add lookup results to non-lookup contexts!\""
, "/build/llvm-toolchain-snapshot-7~svn325874/tools/clang/lib/Serialization/ASTWriter.cpp"
, 6194, __extension__ __PRETTY_FUNCTION__))